JP2017023549A - Gas fryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent discoloration and deterioration of an external case disposed outside of an oil tank and prevent deterioration of heating performance.SOLUTION: An external case for surrounding outside of an oil tank and a communication space is defined therein, connects plural walls and is formed into a case-state. The walls for forming the external case comprise: metallic plate materials 60 having heat resistance; and a heat insulation member 70 disposed on the communication space side of the plate materials 60. An end edge part of each plate material 60 has holding pieces 62 which are bent toward the communication space side for holding the heat insulation member 70. The holding pieces 62A are formed of plural plate pieces 63a formed so as to separate at a prescribed interval along the end edge parts of each plate material 60.SELECTED DRAWING: Figure 6

Description

  The present invention includes an oil tank for storing cooking oil and an outer casing surrounding the outside of the oil tank and having a communication space defined therein, and combustion gas generated by gas combustion in a gas burner is connected to the communication tank. The present invention relates to a heat countermeasure for a gas fryer configured to pass through a space.

  In the restaurant industry such as restaurants, commercial fryer is deployed in the kitchen. The fryer includes an oil tank that stores a predetermined amount of cooking oil and a heating unit that heats the cooking oil in the oil tank. Examples of the heating means include a gas burner disposed outside the oil tank, an electric heater immersed in cooking oil in the oil tank, and the like. The present invention relates to a gas fryer using a gas burner as the heating means, and a gas fryer employing the gas burner is disclosed in Patent Document 1.

  FIG. 11 is a longitudinal sectional side view showing an outline of a main part of a conventional gas fryer 10. The gas fryer 10 includes a box-shaped cabinet body 11, an oil tank 12 that opens upward and is disposed in the cabinet body 11, and a gas burner 13 that is installed in the cabinet body 11 at the lower front side of the oil tank 12. And. The oil tank 12 is provided with an outer casing 21 that surrounds the oil tank 12 from four directions, and a communication space 14 is defined between the oil tank 12 and the outer casing 21. The communication space 14 includes a combustion chamber CR in which the combustion gas generated in the gas burner 13 moves, and an exhaust duct that communicates with the communication space 14 at the rear portion of the cabinet body 11 (the rear side of the oil tank 12). 15 is erected. The high-temperature combustion gas generated by gas combustion in the gas burner 13 heats the oil tank 12 by exchanging heat with the oil tank 12 when moving through the communication space 14, and finally The exhaust duct 15 is raised and discharged to the outside.

  As shown in FIG. 11, the oil tank 12 is formed as a box-like container that opens upward, and is connected to the first zone 12a located below and the first zone 12a above the first zone 12a. And a second zone 12b provided. The opening area of the second zone 12b is set larger than that of the first zone 12a. Further, as shown in FIGS. 11 and 12, the outer casing 21 is formed in a rectangular casing surrounding the first zone 12a. That is, the outer casing 21 has a front wall 100 located on the front side of the first zone 12a of the oil tank 12, a left side wall 101 located on the left side of the first zone 12a, a right side wall 102 located on the right side, and the first The rear wall 103 is located on the rear side of the zone 12a, and the bottom wall 104 is located below the first zone 12a. Each wall described above includes a metal plate 105 having heat resistance and a heat insulating member 110 lined on the side of the communication space 14 of the plate 105. Therefore, when the high-temperature combustion gas generated by the operation of the gas burner 13 circulates in the communication space 14, the outer casing 21 can suppress the loss of the heat of the combustion gas that escapes to the outside. As described above, Patent Literature 1 discloses a gas fryer provided with an outer casing 21 outside the oil tank 12.

Japanese Patent Application Laid-Open No. 2011-58680

  As shown in FIGS. 13 and 14, the plate member 105 that constitutes each of the walls 100 to 104 of the outer casing 21 includes a bent holding piece 96 at the edge, and the heat insulating member 110 is formed by the holding piece 106. It comes to hold. And each wall 100-104 is connected by fastening the board | plate material 105 in one adjacent wall with the board | plate material 106 in the other wall by means, such as a screw | thread. Here, the holding piece 96 of the plate member 105 is formed in a bowl shape to hold the heat insulating member 110, and a part of the holding piece 96 is exposed to the communication space 14 as shown in FIG. 12. Further, as shown in FIGS. 13 and 14, since the holding piece 96 is formed in a long plate shape along the edge of the plate member 105, the high-temperature combustion gas moving in the communication space 14 is always present in the holding piece 96. Contact the holding piece 96. Thus, when the holding piece 96 is heated, the plate material 105 on which the holding piece 96 is formed is also heated by receiving heat transfer. For this reason, not only the heated holding piece 106 is oxidized at a high temperature, but also the plate material 105 is discolored or deteriorated due to heat. In addition, since the heat of the combustion gas moves to the plate member 105 through the holding piece 96 and escapes to the outside of the outer casing 21 and is lost, there is a problem that the heating performance of the gas fryer 10 is lowered.

  The present invention has been proposed to suitably solve the above-mentioned problems inherent in conventional gas fryer, and prevents discoloration and deterioration of the outer casing disposed outside the oil tank, and also provides heating performance. It aims at providing the gas fryer which can prevent the fall of this.

In order to solve the above-mentioned problems and achieve the intended object, the invention according to claim 1 surrounds an oil tank for storing cooking oil and the outside of the oil tank, and a communication space is defined therein. In a gas fryer comprising an outer casing and configured so that combustion gas generated by gas combustion in a gas burner passes through the communication space,
The outer casing is configured in a bowl shape by connecting a plurality of metal plates having heat resistance, and a heat insulating member is disposed on the communication space side of the plate.
The edge portion of the plate member includes a holding piece that is bent toward the communication space and holds the heat insulating member,
The gist of the present invention is that the holding piece is composed of a plurality of plate pieces formed so as to be separated from each other at a required interval along an edge portion of the plate material.
According to the invention which concerns on Claim 1, the holding piece which is provided in the edge part of the board | plate material which comprises each wall of an exterior armor, and hold | maintains a heat insulation member leaves | separates at a required space | interval along the edge part of this board | plate material. Since it comprises a plurality of plate pieces, the substantial width of the holding piece is reduced. As a result, even if the holding piece is heated by the high-temperature combustion gas flowing in the communication space, the plate material on which the holding piece is formed is difficult to receive heat transfer, so that the discoloration and thermal deterioration of the plate material due to the heat effect are suppressed. be able to. In addition, since the heat of the combustion gas is difficult to be transmitted to the plate material, it is possible to suppress the heat of the combustion gas from escaping to the outside of the outer casing through the holding piece, thereby reducing the heating performance of the gas fryer. Can prevent.

In the invention according to claim 2, the heat insulating member is a sheet-like material capable of compressive deformation, and is formed in an outer dimension larger than the outer dimension of the plate member,
The gist is that the heat insulating member is in contact with the other plate member connected to the plate member in a compressed and deformed state.
According to the invention of claim 2, since the heat insulating member is in contact with the other plate member connected to the plate member in a compressed and deformed state, the airtightness of the walls connected to each other is improved, and the wall connection is made. It is possible to prevent combustion gas from leaking out or heat from escaping from the section.

In invention of Claim 3, the said heat insulation member is provided with the return part which turned up the outer edge part vicinity,
The summary is that the folded portion is in close contact with various members with which the heat insulating member abuts in a compressed state.
According to the invention of claim 3, since the folded portion formed on the heat insulating member is in close contact with the various members with which the heat insulating member abuts in a compressed state, a separate member such as a packing is not required and the manufacturing cost is reduced. It can be reduced.

  According to the gas fryer according to the present invention, it is possible to prevent discoloration and deterioration of the outer casing disposed outside the oil tank, and to prevent a decrease in heating performance.

It is a perspective view of the gas fryer which concerns on the Example of this invention. It is the II-II line longitudinal cross-sectional view of FIG. It is the III-III line longitudinal cross-sectional view of FIG. It is the IV-IV line longitudinal cross-sectional view of FIG. It is a perspective view of the right side wall which comprises an exterior collar. It is a perspective view shown in the state where the plate material and heat insulation member which constitute the right side wall were separated. It is explanatory drawing which shows the state which the folding | returning part formed in the heat insulation member is compressively deformed, and is closely_contact | adhered to the board part of this oil tank, when attaching a right side wall to an oil tank. (a) is the perspective view which looked at the oil drain tray from diagonally upward, (b) is the perspective view which looked at the oil drain tray from diagonally downward. (a) is a front view simultaneously showing a state in which the oil drain tray is attached to the opening of the oil tank and a state in which the oil drain tray is attached to the rear panel; (b) is a state in which the oil drain tray is attached to the opening of the oil tank; It is a side view which shows the state with which the back panel was mounted | worn simultaneously. (a) is a perspective view of an oil storage tank, (b) is the Xb-Xb sectional view taken on the line of (a). It is a vertical side view which shows schematic structure of the conventional gas fryer. It is the XII-XII sectional view taken on the line of FIG. It is a perspective view of the right side wall which comprises the conventional exterior collar. It is a perspective view of the state which isolate | separated the board | plate material and heat insulation member which comprise a right side wall.

  Next, the gas fryer according to the present invention will be described below with reference to the accompanying drawings by way of preferred examples.

(Schematic configuration of the gas fryer 10)
As shown in FIGS. 1 to 3, the gas fryer 10 of the embodiment includes a cabinet body 11 having a box shape, an oil tank 12 that stores cooking oil and is disposed in the cabinet body 11, and a lower part of the oil tank 12. And a gas burner 13 as gas combustion means installed on the front side. The oil tank 12 is formed in a box shape opened upward so that food for frying cooking (not shown) can be taken in and out. In the oil tank 12, an outer casing 21 is disposed so as to surround the outer side of the oil tank 12, and as shown in FIG. 4, a gas burner 13 is provided between the outer peripheral surface of the oil tank 12 and the outer casing 21. A communication space 14 in which the combustion gas generated by the operation of the gas is circulated is defined. The communication space 14 includes a first communication space 14a extending rearward along the left outer surface of the oil tank 12 from the left part of the combustion chamber CR defined on the front side of the oil tank 12, and a right part of the combustion chamber CR. The second communication space 14 b extends rearward along the right outer surface of the oil tank 12, and the first communication space 14 a and the second communication space 14 b merge at the rear side of the oil tank 12. In addition, an exhaust duct 15 having an exhaust port 16 formed in the upper portion is erected on the rear side of the oil tank 12 (the rear portion of the cabinet body 11), and the lower portion of the exhaust duct 15 and the communication space 14 are spaces. Are communicating.

  In such a gas fryer 10, the combustion gas generated by the operation of the gas burner 13 flows through the first communication space 14 a and the second communication space 14 b of the communication space 14 from the combustion chamber CR toward the exhaust duct 15. The heat exchange is performed between the combustion gas and the oil tank 12 to heat the oil tank 12, and the cooking oil in the heated oil tank 12 is heated to a predetermined cooking temperature. The combustion gas that has flowed through the communication space 14 moves into the exhaust duct 15, rises in the exhaust duct 15, and is discharged to the outside from the exhaust port 16 that opens at the top of the exhaust duct 15. ing. Here, the combustion gas rises in the exhaust duct 15 to produce a draft effect, and combustion air used for combustion in the gas burner 13 is taken into the cabinet body 11.

(About the operation panel 33)
As shown in FIG. 1, a front panel 17 is disposed at the front of the cabinet body 11. An operation panel 33 is disposed on the front surface of the front panel 17. The operation panel 33 is provided with an operation button for turning on and off the power, an oil temperature setting button for cooking oil, a cooking time setting button, an oil temperature display panel, a cooking time display panel, and the like. Further, in the front panel 17, as shown in FIG. 2, the gas controller board 30 which is a gas control means for controlling the combustion of the gas burner 13 and the gas controller board 30 can communicate with the gas controller board 30 and instruct the gas controller board 30. A display substrate 31 serving as a second control means for transmitting a signal, a breaker 32 for cutting off power supply to the gas fryer 10 and the like are disposed.

(About oil tank 12)
As shown in FIGS. 1, 2, and 4, the oil tank 12 is formed in a box shape that opens upward and protrudes downward. The oil tank 12 includes a first zone 12a positioned below, and a second zone 12b provided on the upper side of the first zone 12a and connected to the first zone 12a. The second zone is more than the first zone 12a. The opening area of 12b is set large, and a predetermined amount of cooking oil can be stored. In the oil tank 12, the state where the cooking oil is filled in the first zone 12a and is filled to about ½ of the depth of the second zone 12b is defined as the prescribed amount of the cooking oil (in FIG. Display). A sensor mounting portion 18 is provided on the rear plate portion 28 of the oil tank 12, and an oil temperature control thermistor (oil temperature) that detects the temperature (oil temperature) of cooking oil stored in the oil tank 12 stored in the oil tank 12. (Temperature detecting means) 19 is attached to the sensor attaching portion 18. That is, the sensor attachment portion 18 is provided at a position farthest from the combustion chamber CR in the oil tank 12, and the oil temperature detected by the oil temperature control thermistor 19 is a low temperature in the cooking oil. Further, a drain pipe 20 for discharging cooking oil stored in the oil tank 12 is provided at the bottom of the oil tank 12 (see FIG. 2).

(About oil level mark 55)
As shown in FIG. 1, the oil tank 12 is provided with an oil amount mark 55 that serves as a mark for the appropriate amount of cooking oil stored in the oil tank 12. In the embodiment, an oil amount mark 55 is provided on the rear plate portion 28 of the oil tank 12. The rear plate portion 28 is provided with two oil amount marks 55 (55a, 55b) that are separated from each other in the vertical direction. Here, the first oil amount mark 55a provided on the lower side is provided at the position of the oil level when the cooking oil in the cold normal temperature state (for example, 20 ° C.) is stored at the specified storage amount. ing. Therefore, when storing cooking oil at normal temperature in the oil tank 12, a predetermined amount of cooking oil is stored in the oil tank 12 by matching the oil level of the cooking oil with the first oil amount mark 55a.

  Further, as shown in FIG. 1, the second oil amount mark 55b provided above the first oil amount mark 55a is a cooking oil whose oil level coincides with the first oil amount mark 55a at a room temperature at 200 ° C. When heated to the oil level of the cooking oil. That is, when cooking oil is heated from room temperature to 200 ° C., the volume increases by about 15%. Therefore, when a specified amount of cooking oil at room temperature is heated to 200 ° C., the oil level of the heated cooking oil is The second oil amount mark 55b coincides with the second oil amount mark 55b.

  In the embodiment, as shown in FIG. 1, the first oil amount mark 55 a and the second oil amount mark 55 b have a plurality of convex portions 56 protruding from the plate surface of the rear plate portion 28 at the required intervals in the left-right direction. It is formed in an aligned state. Each convex portion 56 is formed by embossing the rear plate portion 28. The first oil amount mark 55a and the second oil amount mark 55b are not limited to those formed from the plurality of convex portions 56, and may be lines extending in a horizontal straight line or in other shapes. There may be. Further, the first oil amount mark 55 a and the second oil amount mark 55 b may be a recess that is recessed from the plate surface of the rear plate portion 28. The first oil amount mark 55a and the second oil amount mark 55b may be provided at a position that can be easily visually recognized by a cooking worker, and provided on the left and right side plate portions other than the rear plate portion 28 of the oil tank 12. Also good.

  Therefore, the gas fryer 10 according to the embodiment can check the amount of cooking oil stored during the cooking operation by providing the oil tank 12 with the first oil amount mark 55a and the second oil amount mark 55b. When the oil level of the cooking oil falls below the first oil amount mark 55a, it is recognized that the cooking oil is below the specified amount, and it is possible to replenish the cooking oil at an appropriate timing. To do. Further, by adding cooking oil to the oil tank 12 so that the oil level is located between the first oil amount mark 55a and the second oil amount mark 55b, the cooking oil is replenished to a specified amount or more and the cooking oil is supplied. Overflow from the oil tank 12 can be avoided.

(Thermistor 19 for oil temperature control)
The oil temperature control thermistor 19 is provided with a temperature detecting portion formed in the shape of an elongated round bar, fixed to the sensor mounting portion 18 in a state of extending into the oil tank 12, and cooking stored in the oil tank 12. It can be immersed in oil. The oil temperature control thermistor 19 is configured to detect the oil temperature of the cooking oil while being immersed in the cooking oil and to transmit the detected oil temperature data to the display substrate 31. The oil temperature control thermistor 19 is a mold type that is hardly affected by the combustion gas.

(About exterior wall 21)
As shown in FIGS. 2 and 3, the oil tank 12 is provided with an outer casing 21 that surrounds and covers the first zone 12 a from the outside. The outer casing 21 is disposed away from the outer peripheral surface of the first zone 12a, and defines the communication space 14 constituting the combustion gas discharge structure between the outer casing 21 and the outer peripheral surface of the oil tank 12. The bottom wall 54 of the outer casing 21 is provided with an opening 22 for disposing the gas burner 13 at a position facing the combustion chamber CR constituting the front portion of the communication space 14.

  2 and 4, the outer casing 21 includes a front wall 50 positioned on the front side of the first zone 12a of the oil tank 12, a left side wall 51 positioned on the left side of the first zone 12a, and the first A right side wall 52 located on the right side of the first zone 12a, a rear wall 53 located on the rear side of the first zone 12a, and a bottom wall 54 located on the lower side of the first zone 12a. In the outer casing 21 of the embodiment, a front wall 50, a left side wall 51, a right side wall 52, a rear wall 53 and a bottom wall 54 are formed separately, and the end of one adjacent wall is connected to the other wall. By connecting to the end portion, a box shape surrounding the first zone 12a of the oil tank 12 is formed. The outer casing 21 fixes the oil tank by fixing the upper ends of the front wall 50, the left side wall 51, the right side wall 52, and the rear wall 53 to a plate part that defines the second zone 12b of the oil tank 12. 12 to define the communication space 14. Here, although each wall 50-54 differs in a shape and a dimension, the basic composition is the same. Therefore, hereinafter, the right side wall 52 will be described as an example, and for the walls other than the right side wall 52, the same members and portions will be designated by the same reference numerals, and description thereof will be omitted.

(About board 60)
The right side wall 52 shown in FIGS. 5 to 7 is configured by overlapping a plate member 60 exposed to the outside of the outer casing 21 and a heat insulating member 70 lined on the communication space 14 side of the plate member 60 and not exposed to the outside. ing. Similarly to the right side wall 52, the front wall 50, the left side wall 51, the rear wall 53, and the bottom wall 54 are configured by overlapping a plate member 60 and a heat insulating member 70. The plate member 60 is a metal sheet metal member having heat resistance, and includes a plate body 61 that forms the outer surface of the outer casing 21, and a holding piece 62 that is provided on an edge of the plate body 61 and holds the heat insulating member 70. It has. The plate member 60 of each of the walls 50 to 54 has a plate body 61 formed in a substantially flat rectangle, and the heat insulating member 70 contacts the entire surface of the plate body 61 on the side of the communication space 14.

(About the holding piece 62)
As shown in FIGS. 5 to 7, the holding piece 62 provided on the plate member 60 is bent from the edge portion of the plate body 61 and extends in a direction intersecting the surface direction of the plate body 61. Yes. The holding piece 62 can come into contact with the outer edge of the heat insulating member 70 from the outside, and restricts the heat insulating member 70 superimposed on the plate main body 61 from shifting in the surface direction of the plate main body 61. Yes. And the shape of the holding piece 62 and the length of the direction along the edge part of the plate main body 61 differ for every wall 50-54. As shown in FIG. 4, the outer casing 21 of the embodiment has the front wall 50 in contact with the front end of the left side wall 51 and the right side wall 52 that are separated from each other in the left and right direction, and the front wall 50 is in contact with the left side wall 51. And connected to the right side wall 52. Further, the rear wall 53 is configured to be connected to the left side wall 51 and the right side wall 52 with the rear wall 53 in contact with the rear ends of the left side wall 51 and the right side wall 52. That is, since the left side wall 51 and the right side wall 52 come into contact with the heat insulating member 70 of the front wall 50 and the heat insulating member 70 of the rear wall 53, the heat insulating member 70 may be separated from the plate body 61 of the plate material 60. Being regulated. Accordingly, the holding piece 62 provided on the plate material 60 of the rear wall 53 and the front wall 50 has a longer extension length from the plate body 61 than the thickness of the heat insulating member 70 (see FIG. 4). The holding piece 62 of the front wall 50 and the holding piece 62 of the rear wall 53 are fixed to the plate body 61 of the left side wall 51 or the right side wall 52 with screws 68.

  And about the holding piece 62 provided in the board | plate material 60 of the said walls 50-54, a part holding piece 62 is exposed to the said communicating space 14. As shown in FIG. In the embodiment, as shown in FIG. 4, holding pieces (hereinafter, vertical holding pieces 62 </ b> A) provided on the front edge and the rear edge of the plate material 60 of the left side wall 51 and the right side wall 52 are connected to the communication space 14. To be exposed. That is, the front wall 50 and the rear wall 53 come into contact with the heat insulating member 70 of the left side wall 51 and the heat insulating member 70 of the right side wall 52, and the heat insulating member 70 of the front wall 50 and the heat insulating member 70 of the rear wall 53 are The separation of the plate 60 from the plate body 61 is restricted. On the other hand, the heat insulating member 70 of the left side wall 51 and the heat insulating member 70 of the right side wall 52 are not restricted from being separated from the plate body 61 of the plate material 60 by the front wall 50 and the rear wall 53. Thereby, the vertical holding pieces 62 </ b> A provided at the front end edge and the rear end edge of the left side wall 51 and the right side wall 52 in the plate member 60 can restrict the heat insulating member 70 from being separated from the plate body 61 of the plate member 60. Then, the communication space 14 is exposed.

  The holding piece 62 (62A) exposed in the communication space 14 is configured as follows. That is, as shown in FIGS. 4 to 6, the vertical holding piece 62 </ b> A intersects the outer surface of the plate body 61 from the plate body 61 in order to hold the heat insulating member 70 in contact with the plate material 60. And a locking portion 64 extending from the extending end of the rising portion 63 in a direction intersecting with the rising direction of the rising portion 63. In other words, the longitudinal holding piece 62A has an L shape that is broken in the lateral direction. The rising width of the rising portion 63 from the plate body 61 is set to be the same as the thickness of the heat insulating member 70. The locking portion 64 faces the plate main body 61 at the same interval as the thickness of the heat insulating member 70. Thereby, the vertical holding piece 62A comes to sandwich the heat insulating member 70 in the thickness direction between the plate body 61 and the locking portion 64, and the locking portion 64 is exposed to the communication space 14 (see FIG. 4). ).

  And about the said vertical holding piece 62A which the latching | locking part 64 exposes in the communication space 14, as shown in FIGS. 5-7, the rising part 63 is in the direction (up-down direction) along the edge of the board main body 61. As shown in FIG. It is composed of a plurality (five in the embodiment) of connecting portions (plate pieces) 63a that are separated at a required interval. That is, a plurality of (four in the embodiment) openings 65 are formed at required intervals in the direction along the edge of the plate body 61 of the plate member 60 in the rising portion 63 of the vertical holding piece 62A. The connecting portion 63a is located adjacent to the center. That is, the vertical holding piece 62A is connected to the plate body 61 only at the five connecting portions 63a.

  Therefore, the vertical holding piece 62 of the embodiment in which the plurality of openings 65 are formed has a shorter continuous width with the plate body 61 than the holding piece 62 in the conventional plate material 60 shown in FIGS. 13 and 14. It has become. Thereby, when the vertical holding piece 62 is heated by the engaging portion 64 being exposed to the communication space 14 and coming into contact with the high-temperature combustion gas, the heat of the vertical holding piece 62 is transferred from each connecting portion 63a. Only the plate body 61 is transmitted. That is, the plate member 60 of the embodiment has a reduced amount of heat transfer from the holding piece 62 to the plate body 61 as compared with the conventional plate member 60 shown in FIGS. 13 and 14. The heating is suppressed. Thereby, since the temperature rise of the board main body 61 is suppressed, it is possible to suppress discoloration and thermal deterioration of the board material 60. Further, since the heat of the combustion gas is suppressed from being transmitted to the plate main body 61 via the vertical holding piece 62, the heat of the combustion gas is also suppressed from escaping to the outside of the outer casing 21, and the gas fryer is suppressed. It can prevent that the heating performance of 10 falls.

(Insulation member 70)
The heat insulating member 70 in each of the walls 50, 51, 52, 53, 54 is configured to be lightweight and flexible, and capable of compressive deformation. In the embodiment, as the heat insulating member 70, a sheet-like blanket-type fireproof heat insulating material formed by laminating ceramic fibers in layers and needle-working them in a complicated manner is employed. The ceramic fiber is an artificial mineral fiber mainly composed of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ), and serves as a refractory / heat insulating material that can be used even in a high temperature range of 1000 ° C. or higher. In addition, the thermal conductivity of the ceramic fiber is as small as 1/10 of the refractory brick and 1/2 compared with the heat insulating brick. Ceramic fibers include amorphous refractory ceramic fibers (ROF) having an alumina content of 40 to 60% and crystalline alumina fibers having an alumina content of 70% or more.

  The sheet-like heat insulating member 70 made of the ceramic fiber is flexible and can be folded and folded and can be compressed and deformed. Therefore, the heat insulation member 70 of each wall 50-54 employ | adopts what was cut | judged to the outer dimension larger than the board main body 61 of the board | plate material 60 one time. That is, in each of the walls 50 to 54 before being assembled to the exterior casing 21, the heat insulating member 70 is disposed on the plate material 60 with the outer end portion of the heat insulating member 70 protruding from the end edge portion of the plate material 60. It is configured to be. And when connecting each wall 50-54 and forming the exterior collar 21, the part extended from the board | plate material 60 in the heat insulation member 70 is compressively deformed, and it closely_contact | adheres to the board | plate material 60 in the other wall without gap. It is like that.

  The sheet-like heat insulating member 70 made of the ceramic fiber can be processed with a Thomson type having a Thomson blade, and can be easily formed into a required shape and size, and can be manufactured at a low cost. Cost can be reduced.

  Further, the sheet-like heat insulating member 70 made of ceramic fiber can be folded and folded as described above. Accordingly, as shown in FIGS. 5 to 7, the wall 50, 51, 52, 53, 54 can be provided with a folded portion 71 on the heat insulating member 70 held on the plate member 60. Since the folded portion 71 is twice the thickness of the heat insulating member 70, the folded portion 71 protrudes inward of the outer casing 21 from the tip of the holding piece 62 of the plate member 60. And the folding | returning part 71 is comprised so that the function as what is called a packing may be exhibited by closely_contact | adhering in the state compressed to the various members to which walls 50-54 are attached.

  FIG. 7 shows the folded portion 71 provided on the heat insulating member 70 in the right side wall 52. The folded portion 71 protrudes beyond the tip of the upper horizontal holding piece 62 of the plate member 60 before the right side wall 52 is attached to the oil tank 12. When the holding piece 62 provided on the upper edge of the plate material 60 is fixed to the plate portion of the oil tank 12 with screws, the plate portion is sandwiched between the plate portion and the plate main body 61 in the thickness direction and compressed and deformed. And the plate body 61 come into close contact with each other. That is, the folded portion 71 of the heat insulating member 70 functions as a packing, so that the plate portion of the oil tank 12 can be used without using another packing for filling the gap between the oil tank 12 and the plate material 60 of the right side wall 52. And the plate body 61 can be sealed.

  In the embodiment, the folded portion 71 is provided on the upper portion of the heat insulating member 70 in the front wall 50, the left side wall 51, the right side wall 52 and the rear wall 53. Thereby, when the outer casing 21 is fixed to the oil tank 12, the folded portion 71 is brought into close contact with the outer surface of the plate portion of the oil tank 12 around the entire upper edge of the outer casing 21. Therefore, a sealed state between the outer casing 21 and the oil tank 12 is formed, and the heat of the combustion gas moving through the communication space 14 can be prevented from escaping from between the outer casing 21 and the oil tank 12 to the outside.

(About gas burner 13)
The gas burner 13 employs a so-called Bunsen burner having a structure for sucking unpressurized primary air by a gas flow. As shown in FIGS. 2 to 4, the gas burner 13 extends in the longitudinal direction of the case body 40 in a case body 40 formed in a rectangular box shape having an opening at the top and bottom and a longitudinal direction in the left-right direction. A gas distribution pipe 41 that is present and connected to the gas supply pipe 25 is provided. A plurality of combustion nozzles 42 are provided in a row above the gas distribution pipe 41, and the combustion nozzles 42 protrude upward from the upper opening 40 b of the case body 40. The case body 40 is adapted to take in primary air used for gas combustion at the combustion nozzle 42 from an air intake port 40a which is a lower opening. As a result, the gas burner 13 mixes the gas supplied from the gas distribution pipe 41 with the primary air taken into the case body 40 via the air intake port 40a, so that each combustion nozzle 42 Gas combustion is possible, and secondary combustion is taken in by the combustion nozzle 42 to enable continuous combustion. The gas burner 13 disposed in the opening 22 is disposed at an appropriate interval from the first zone 12a of the oil tank 12 to the front side, and the flame at the combustion nozzle 42 contacts the front outer surface of the first zone 12a. This prevents incomplete combustion.

(About gas supply pipe 25)
As shown in FIG. 3, the gas burner 13 is connected to a gas supply pipe 25 connected to an external gas supply source (not shown), and a combustion gas (city gas, propane gas, etc.) The gas is supplied to the gas distribution pipe 41 through the gas supply pipe 25. A valve unit 36 is disposed in the middle of the gas supply pipe 25, and the gas supply pipe 25 is connected to a gas intake portion 37 connected to a gas supply source (not shown) and an inflow side of the valve unit 36. The primary gas supply pipe 25a is connected to the outlet side of the valve unit 36 and the gas distribution pipe 41 of the gas burner 13.

(Valve unit 36)
The valve unit 36 is a first solenoid valve 26 that is an on-off valve connected to the outlet side of the primary gas supply pipe 25a, and a second on-off valve that is connected to the outlet side of the first solenoid valve 26. And an electromagnetic valve 27. The first electromagnetic valve 26 and the second electromagnetic valve 27 are controlled to be opened and closed by the gas controller board 30. The valve unit 36 of the embodiment includes a proportional valve 35 that is controlled to be opened and closed by the gas controller board 30 on the outlet side of the second electromagnetic valve 27. The first electromagnetic valve 26, the second electromagnetic valve 27, and the proportional valve 35 are arranged in a unit body 45a. The gas supplied into the primary gas supply pipe 25a moves in the order of the first electromagnetic valve 26 → the second electromagnetic valve 27 → the proportional valve 35 and is supplied to the gas burner 13 through the secondary gas supply pipe 25b. It has come to be. Here, the first electromagnetic valve 26 and the second electromagnetic valve 27 are two-position type cutoff valves that are displaced to an open position for opening a gas passage formed in the unit main body 45a and a closed position for closing. Then, the gas controller board 30 controls the first electromagnetic valve 26 and the second electromagnetic valve 27 to be closed, thereby shutting off the gas supply from the primary gas supply pipe 25a to the gas burner 13, and the first electromagnetic valve By controlling the valve 26 and the second electromagnetic valve 27 to the open state, the supply of gas from the primary gas supply pipe 25a to the gas burner 13 is permitted.

  The proportional valve 35 is a gas supply amount adjusting means that can adjust the valve opening degree based on the opening / closing control by the gas controller substrate 30 and can increase / decrease the gas supply amount (flow rate) to the gas burner 13. . Then, the secondary gas pressure in the secondary gas supply pipe 25b increases and decreases in proportion to the valve opening of the proportional valve 35, and the proportional valve 35 is connected to the secondary gas gas in the secondary gas supply pipe 25b. It is also a secondary pressure adjusting means for increasing or decreasing the pressure. The proportional valve 35 variably controls the current value applied to the proportional valve 35 based on PWM (Pulse Width Modulation) control by the gas controller board 30 and PD (proportional differentiation) control of the display board 31 to control the valve. Opening and closing is performed. The proportional valve 35 can adjust the valve opening steplessly between 0 to 100% in proportion to the current value applied from the gas controller board 30, and the gas supply amount to the gas burner 13. The gas secondary pressure can be adjusted steplessly.

(About oil drain tray 75)
As shown in FIGS. 8 and 9, the gas fryer 10 according to the embodiment has an oil drain tray 75 for temporarily placing food cooked with cooking oil heated to a cooking temperature and for draining the food. I have. The oil drain tray 75 can be detachably attached to the opening of the oil tank 12 and can be detachably attached to the back panel 11 a of the cabinet body 11. That is, the oil drain tray 75 of the embodiment is configured so that two types of mounting modes can be selected according to the preference of the cooking worker.

  As shown in FIGS. 8 and 9, the oil drain tray 75 is provided on the tray portion 76 on which food can be placed, and the tray portion 76, and the oil drain tray 75 is attached to and detached from the opening of the oil tank 12. There are provided first mounting means 77 for detachably mounting and second mounting means 78 provided on the tray portion 76 for detachably mounting the oil drain tray 75 on the back panel 11a. The tray portion 76 includes a rectangular bottom plate portion 76a and a side plate portion 76b that rises from the outer edge of the bottom plate portion 76a and surrounds the bottom plate portion 76a. When the tray portion 76 is attached to the opening of the oil tank 12 by the first attachment means 77 (indicated by a solid line in FIG. 9A and indicated by a two-dot chain line in FIG. 9B), the bottom plate portion 76a is the oil tank. It is comprised so that it may incline below toward 12 side. Further, in a state where the second mounting means 78 is mounted on the back panel 11a (indicated by a two-dot chain line in FIG. 9A and indicated by a solid line in FIG. 9B), the bottom plate portion 76a is directed downward toward the back panel 11a. It is comprised so that it may incline. In the bottom plate portion 76a of the tray portion 76, a plurality of oil drain holes 76c are formed at required intervals along the edge portion at the lowest edge portion, and fall from the food to the upper surface of the bottom plate portion 76a. Thus, the cooking oil that has moved on the bottom plate portion 76a can be dropped into the oil tank 12 through the oil drain hole 76c. A net-like oil draining member (not shown) is detachably mounted on the tray portion 76.

(About the first mounting means 77)
As shown in FIGS. 8 and 9A, the first mounting means 77 is disposed on the lower surface of the bottom plate portion 76a of the tray portion 76, and is configured to sandwich the inner surface of the oil tank 12 and the outer surface of the cabinet body 11. Has been. That is, the first mounting means 77 extends from the bottom plate portion 76 a of the tray portion 76 and contacts the inner surface of the oil tank 12, and extends from the bottom plate portion 76 a and contacts the outer surface of the cabinet body 11. A second support plate 77b. The first support plate 77a and the second support plate 77b extend in parallel. The first support plate 77a and the second support plate 77b extend obliquely at a required angle with respect to the bottom plate portion 76a. Thus, the first support plate 77a and the second support plate 77b are in contact with the vertical inner surface of the oil tank 12 and the vertical outer surface of the cabinet body 11, so that the bottom plate portion 76a is inclined downward toward the oil tank 12. The tray unit 76 is supported.

  As shown in FIG. 9A, the oil drain tray 75 has the left and right edges at the opening of the oil tank 12 by the first mounting means 77 by reversing the front and rear direction of the oil drain tray 75. It can be detachably attached to both. When the oil drain tray 75 is attached to the left edge of the opening of the oil tank 12, the oil drain tray 75 has a posture in which the tray section 76 extends to the left of the cabinet body 11 and is attached to the right edge of the opening of the oil tank 12. In this case, the oil drain tray 75 has a posture in which the tray portion 76 extends to the right of the cabinet body 11.

(About the second mounting means 78)
As shown in FIG. 8, the second mounting means 78 is provided on the side plate portion 76 b of the tray portion 76 and is engaged with a hook 79 (see FIG. 9) provided on the back panel 11 a of the cabinet body 11. It is configured. That is, the second mounting means 78 is an opening formed in the side plate portion 76b of the tray portion 76, and is formed to be connected to a large mouth portion 78a through which the hook 79 can be inserted, and an upper side of the large mouth portion 78a. 79 comprises a fore edge portion 78b that cannot be inserted. Two second mounting means 78 are formed corresponding to each of the hooks 79 and 79 as a plurality of hooks (two in the embodiment) are arranged. Such a second mounting means 78 has the side plate portion 76b of the tray portion 76 opposed to the back panel 11a, the hook 79 is inserted through the large opening portion 78a, and then the oil drain tray 75 is moved downward to move the small opening portion. By positioning 78b on the hook 79, it is locked to each hook 79, and the oil drain tray 75 can be attached to the back panel 11a.

  As shown in FIG. 9B, in a state where the oil drain tray 75 is mounted on the back panel 11a by the second mounting means 78, the lower end of the first support plate 77a of the first mounting means 77 is the back panel. The oil drain tray 75 is thereby stably supported on the back panel 11a. Here, the width in the longitudinal direction of the first support plate 77a (the width in the left-right direction when the oil drain tray 75 is attached to the back panel 11a) is shorter than the left-right opening width of the second zone 12b in the oil tank 12. Is set. Thereby, the cooking oil dropped from the oil drain hole 76c of the tray portion 76 is received by the first support plate 77a, moved to the left end or the right end of the first support plate 77a, and dropped from the left end or the right end. In some cases, the cooking oil is configured to be collected in the oil tank 12.

  Further, as shown in FIG. 8 (b), a plurality of (five in the embodiment) notches 77c are provided at required intervals in the longitudinal direction at the lower end of the first support plate 77a of the first mounting means 77. ing. Each notch 77c is a recess that opens at the lower end of the first support plate 77a and opens in the thickness direction of the first support plate 77a. Thus, when the oil drain tray 75 is mounted on the back panel 11a by the second mounting means 78 and the lower end of the first support plate 77a comes into contact with the back panel 11a, each notch 77c is formed. A gap is formed by separating the formed part from the back panel 11a (see FIG. 9A). Accordingly, the cooking oil dropped from the oil cut hole 76c of the tray portion 76 and received by the first support plate 77a falls downward from the gap formed by the notch 77c and is recovered in the oil tank 12. It is configured.

  Therefore, in the gas fryer 10 of the embodiment, the single oil drain tray 75 can be detachably attached to the opening of the oil tank 12 (FIG. 9A) or detachably attached to the rear panel 11a. Since it is possible, it is possible for the cooking worker to select the mounting mode according to his / her preference. Moreover, since it is not necessary to prepare the two types of oil drain trays 75 according to the respective mounting modes, the manufacturing cost can be suppressed. In any of the mounting modes, the cooking oil dropped from the tray portion 76 is collected in the oil tank 12, and the cooking oil does not spill outside the gas fryer 10.

(About the discharge of cooking oil in the oil tank)
As shown in FIG. 2, the drain pipe 20 disposed at the bottom of the oil tank 12 is provided with a valve 80 that makes the inside of the drain pipe 20 communicated and disconnected. The valve 80 is opened and closed by an oil draining lever 81 disposed at the lower front side of the cabinet body 11. That is, the oil draining lever 81 is connected to the valve 80 by a connecting bar 82 extending in the front-rear direction, and the valve 80 is rotated by rotating the oil discharging lever 81 around the axis. Is configured to be displaced into an open state and a closed state.

  As shown in FIGS. 2 and 3, a storage space 83 for storing an oil storage tank 85 that receives cooking oil in the oil tank 12 discharged through the drain pipe 20 is defined in the lower portion of the cabinet body 11. Has been. That is, when the cooking oil in the oil tank 12 is discharged, the cooking oil is directly discharged from the drain pipe 20 into the oil storage tank 85 with the oil storage tank 85 positioned in the accommodation space 83. ing.

(About oil storage tank 85)
As shown in FIGS. 2, 3, and 10, the oil storage tank 85 includes a tank member 86 that has an upper opening that can store cooking oil, and a lid member 87 that covers the upper opening of the tank member 86. ing. The lid member 87 has an oil receiving port 88 that allows the cooking oil dropped from the drain pipe 20 to pass to a position directly below the drain pipe 20 when the oil storage tank 85 is set in the housing space 83. Has been established. The oil receiving port 88 is an opening having an opening size that is appropriately larger than the lower opening of the drain pipe 20. In the embodiment, the oil receiving port 88 is a circular opening having a diameter of about 1.5 to 2 times the diameter of the lower opening of the drain pipe 20. is there. Thereby, the cooking oil falling from the drain pipe 20 is hardly applied to the upper surface of the lid member 87. The oil storage tank 85 is provided with a plurality of tires 89 at the bottom of the tank member 86, and the oil storage tank 85 can move on the floor surface by the rotation of the tire 89.

  The lid member 87 of the oil storage tank 85 is provided with an opening / closing member 90 that opens and closes the oil receiving port 88. The opening / closing member 90 is supported to be openable / closable via a support shaft 91 with respect to the upper surface of the lid member 87 and is formed in a size larger than the oil receiving port 88. Therefore, when the opening / closing member 90 is closed to the lid member 87, the oil receiving port 88 is completely covered by the opening / closing member 90.

  The oil storage tank 85 configured as described above is set at a predetermined position in the accommodation space 83 by opening the opening / closing member 90. Then, the cooking oil stored in the oil tank 12 is discharged from the drain pipe 20 and is stored in the oil storage tank 85 by turning the oil drain lever 81 of the gas fryer 10 to open the valve 80. It falls into the tank member 86. At this time, when the cooking oil that has fallen into the tank member 86 jumps upward in the tank member 86, the cooking oil is received by the lid member 87 and is prevented from scattering outside the tank member 86. It has come to be. Therefore, the cooking oil can be exhausted vigorously by opening the valve 80 fully open by the oil draining lever 81. Therefore, in order to avoid the rebound of cooking oil, there is no need to reduce the momentum of discharge by setting the valve 80 in a half-open state, so that deterioration of the packing provided in the valve 80 can be prevented.

  In the oil storage tank 85, the upper opening of the tank member 86 is closed by the lid member 87, and the oil receiving port 88 is closed by the opening / closing member 90, so that cooking oil is stored in the tank member 86. In this case, dust, dirt, insects and the like can be prevented from entering the tank member 86. Furthermore, it is possible to prevent the cooking oil in the tank member 86 from spilling outside due to vibration when the oil storage tank 85 is moved.

(Example of change)
The present invention is not limited to the configuration of the above-described embodiment, and can be modified as follows.
(1) The holding pieces formed on the front wall, the left and right side walls, the rear wall, and the bottom wall that constitute the outer casing are not limited to the shapes exemplified in the embodiments, and can be variously changed. For example, the latching | locking part of a holding piece may be the form isolate | separated for every board piece. That is, the locking portion may be formed with the same width as each plate piece, and the opening may be opened at the extended end of the locking portion.
(2) The heat insulating member may be formed of a material other than the ceramic fiber as long as it is a sheet-like heat insulating material capable of elastic deformation.
(3) The folded portion formed on the heat insulating member may be folded back multiple times if the material has a high compression rate.
(4) In the embodiment, the configuration in which the gas controller substrate as the control means and the display substrate as the second control means are individually provided is exemplified, but the gas controller substrate and the display substrate are configured as a single control means. Thus, the single controller may have the function of the gas controller board and the function of the display board.

12 oil tank, 13 gas burner, 14 communication space, 21 exterior rod, 60 plate material 70 heat insulating member, 62 holding piece, 63a connecting portion (plate piece), 71 turn-up portion

Claims (3)

An oil tank (12) for storing cooking oil and an outer casing (21) surrounding the outside of the oil tank (12) and having a communication space (14) defined therein, are provided with a gas burner (13). In the gas fryer configured so that the combustion gas generated by gas combustion of the gas passes through the communication space (14),
The outer casing (21) is formed into a bowl shape by connecting a plurality of heat-resistant metallic plates (60), and a heat insulating member on the side of the communication space (14) of the plate (60). 70)
The edge of the plate (60) includes a holding piece (62) that holds the heat insulating member (70) by bending toward the communication space (14).
The holding piece (62) is composed of a plurality of plate pieces (63a) formed so as to be separated from each other at a required interval along an edge portion of the plate material (60). The heat insulating member (70) is a sheet-like material capable of compressive deformation, and is formed in an outer dimension larger than the outer dimension of the plate (60),
The gas fryer according to claim 1, wherein the heat insulating member (70) contacts the other plate member (60) connected to the plate member (60) in a compressed and deformed state. The heat insulating member (70) includes a folded portion (71) which is folded around the outer edge portion,
The gas fryer according to claim 2, wherein the folded portion (71) is in close contact with the various members with which the heat insulating member (70) contacts in a compressed state.

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