JP2013026167A - Induction heating cooker - Google Patents

Abstract

An object of the present invention is to prevent the liquid from reaching and damaging the electronic components inside the container even when the liquid is spilled directly into the exhaust port without reducing the cooking space on the top plate without impairing the appearance. An object of the present invention is to provide an induction heating cooker which is easy to use and reliable.
A top plate disposed on an upper surface of a main body, a heating coil disposed below the top plate, a substrate that drives and controls the heating coil, a fan device that cools the heating coil and the substrate, An air inlet for supplying air to the fan device, an air outlet that opens on the upper surface of the main body and exhausts the air that has cooled the heating coil and the substrate, and a front wall and a rear wall provided below the air outlet. An induction heating cooker comprising a liquid receiving member configured with a bottom surface having a width wider than the front-rear width of the exhaust port.
[Selection] Figure 3

Description

  The present invention relates to an induction heating cooker.

  The induction heating cooker performs cooking using the Joule heat generated by the eddy current generated at the bottom of the pan when magnetic lines generated by flowing a high-frequency current through the induction heating coil pass through the metal pan. In the induction heating cooker, the induction heating coil and the electronic components on the control board that control the induction heating coil generate heat. Therefore, generally, the induction heating coil and the control board are cooled by blowing cooling air from a blower. .

  This induction heating cooker includes a stationary type and a built-in type that is stored in a kitchen furniture. In the case of the built-in type, in order to secure the cooling air volume and exhaust the cooling air to the outside of the kitchen furniture etc., the installation position of the intake and exhaust ports is installed in an open form on the top plate installed on the top of the main unit There are many cases. When the air intake vent is opened on the top plate, liquids such as boiled juice spilled on the top plate, water vapor generated during cooking, oil smoke, etc. may flow into the body due to the airflow sucked from the air intake vent There was a risk of damaging internal electronic components.

  For this reason, there are air intakes that are provided on the front, back, bottom, etc. of the body to suppress suction of liquid, water vapor, oily smoke, and the like. However, even in such a configuration, the exhaust port is generally installed on the top plate, and the risk of liquid spilled on the top plate flowing from the exhaust port has not been solved.

  There exists patent document 1 as a prior art document which discloses the induction heating cooking appliance which provided the inlet port and the exhaust port in the upper surface back of the top plate. The cooling flow path structure in the induction heating apparatus of Patent Document 1 is configured to ventilate and cool the cooling air sucked using a blower from an air inlet opening at the rear of the upper surface of the body to the control board and the induction heating coil. The air that has cooled the induction heating coil is structured to be exhausted to the outside of the body through an exhaust port that opens to the rear of the top surface of the body.

  In such an induction heating cooker, liquids such as water and broth may flow from the air intake and exhaust to the inside of the container due to spillage during cooking or overturning of the pan, etc. In Patent Document 1, as described in FIG. 1 and the like of the same document, a drainage portion independent of the intake port and the exhaust port is provided in front of the intake port and the exhaust port. Prevents inflow of liquid.

JP 2004-87401 A

  In patent document 1, the drainage part for capturing and discharging the liquid can be provided in front of the exhaust port, and the liquid flowing on the top plate toward the rear can be prevented from entering the inside of the body from the exhaust port. However, when the liquid directly enters the exhaust port, the liquid may enter the inside of the container from the exhaust port and damage the electronic components inside the container. In addition, since it is necessary to provide a drainage part that is independent of the exhaust port adjacent to the exhaust port, there is a problem that the cooking space on the top plate is narrowed and the appearance of the container is impaired.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and without sacrificing the appearance, without narrowing the cooking space on the top plate, even when liquid is spilled directly into the exhaust port, to the electronic component inside the liquid container Is to provide an induction heating cooker that is easy to use and highly reliable.

  In order to solve the above-described problem, in the induction heating cooker according to claim 1, a top plate disposed on an upper surface of a main body, a heating coil disposed below the top plate, a substrate for driving and controlling the heating coil, and A heating coil and a fan device for cooling the substrate; an intake port for supplying air to the fan device; an exhaust port that opens on the upper surface of the main body and exhausts the air that has cooled the heating coil and the substrate; The liquid receiving member is provided below the mouth, and includes a front wall, a rear wall, and a bottom surface having a width wider than the front-rear width of the exhaust port.

  The induction heating cooker of the present invention does not impair the appearance of the container, and does not narrow the cooking space on the top plate, and even when liquid enters from the exhaust port opened on the top plate, Ease of use and reliability can be improved by preventing the liquid from reaching the electronic component and discharging the liquid to the outside of the container.

The whole perspective view of an induction heating cooking appliance. The whole perspective view at the time of removing a top plate etc. In the induction heating cooking appliance of FIG. 2, the side cross-section perspective view at the time of seeing from the front right side of the main body what is cut at substantially the center of the induction heating unit on the right side as viewed from the front. The fragmentary sectional view perspective view which expanded the liquid-proof structure part of FIG. The fragmentary sectional view perspective view which expanded the liquid-proof structure part of Example 2. FIG. FIG. 9 is a partial cross-sectional perspective view in which a liquid-proof structure portion of Example 3 is enlarged. The back cross-sectional perspective view of the induction heating cooking appliance of Example 4. FIG. The back cross-sectional perspective view of the induction heating cooking appliance of Example 5. FIG. The back cross-sectional perspective view of the induction heating cooking appliance of Example 6. FIG.

  Embodiments of the present invention will be described with reference to the drawings.

  Example 1 will be described by taking an induction heating cooker including three induction heating units and one grill and being used in a system kitchen as an example.

  FIG. 1 is an external inclination view of the induction cooking device of the present embodiment. The glass top plate 1 is provided on the upper surface of the main body 2 and a load such as a pan is placed thereon. A grill 4 is provided on the left side of the front surface of the main body 2, and an operation unit 3 for operating the grill 4 is provided next to the grill 4. In addition, on the front side of the top plate 1, three display operation units 5 corresponding to each of the three induction heating units are arranged so that the heating power of the induction heating unit can be operated and the output state of the induction heating unit is liquid crystal. Display and transmit the strength of heating output to the user. An exhaust port cover 25 covers an exhaust port 17 described later.

  FIG. 2 is an exploded perspective view of the induction heating cooker described with reference to FIG. 1, and shows the mounting of the inverter board and the induction heating coil by removing the top plate 1 and the like from the main body. FIG. 3 is an internal cross-sectional view of the induction heating cooker of FIG. 2 cut at substantially the center of the induction heating coil on the right side when viewed from the front, and arrows in the figure indicate the flow of air. In FIG. 2, a part of the configuration is omitted for explanation.

  As shown in FIGS. 2 and 3, below the top plate 1, an induction heating coil 6 corresponding to the right induction heating unit, an induction heating coil 7 corresponding to the left induction heating unit, and a heating unit at the center rear are provided. There is a corresponding induction heating coil 8, which generates magnetic lines of force when a high-frequency current flows and heats the pan as a load. Below the induction heating coil 6 on the right, an inverter board 9 that controls each induction heating coil, and a board case 11 that houses the inverter board 9 and a fan device 10 that supplies cooling air to each induction heating coil are arranged. Yes. An intake port 16 is provided on the right side of the back surface of the main body 2, and an exhaust port 17 is provided on the rear side of the upper surface of the main body 2.

  A fan device 10 including a turbo fan (fan 12) is provided at the back of the substrate case 11, and the fan 12 is driven by a fan motor 13 to blow cooling air. The fan device 10 performs intake air from the fan device intake port 14 and exhausts air from a plurality of discharge ports 15. In this embodiment, an example in which two discharge ports 15 are provided is shown, but three or more openings may be provided in accordance with the number of electronic substrates and induction heating coils and the amount of heat generated. In this embodiment, the fan 12 is described as an example of a turbo fan having a fan inner diameter / fan outer diameter of 0.4 to 0.7, a blade outlet angle of 110 degrees or less, and a number of blades of 15 or less. However, an axial fan, a multiblade fan, or the like may be used, and the position of the fan may be arranged at a position other than the present embodiment.

  Next, the flow of cooling air in the present embodiment will be described. The intake port 16 of the main body 2 is an inlet for cooling air inside the main body 2. In addition, although the inlet 16 was provided in the back right side of the main body here, you may provide in the front surface, side surface, etc. of a main body. The cooling air sucked from the intake port 16 is guided to the fan device intake port 14. The air taken in from the air inlet 14 of the fan device is deflected by 90 degrees in the fan 12 by the rotation of the fan 12 driven by the fan motor 13 and then further deflected by 90 degrees in the fan device 10. And discharged from the discharge port 15. The inverter board 9 corresponding to each induction heating coil is stacked and arranged on the downstream side of the fan device 10, and the cooling air blown from the fan device 10, as shown by the arrows in FIG. Cool each induction heating coil. The cooling air that has cooled the inverter board 9 and each induction heating coil passes through the exhaust port 17 provided in the rear part of the main body 2 and is discharged to the outside. As shown in FIG. 2, in this embodiment, there are two opening holes of the exhaust port 17.

  In the above structure, the whole operation | movement in the case of cooking by putting a pan on the right induction heating part is demonstrated easily. First, the pan is placed on the top plate 1 above the right induction heating coil 6, the power switch of the operation unit 3 is turned on, and the output adjustment corresponding to the right induction heating unit is adjusted by the display operation unit 5. To do. The control unit of the inverter board 9 causes a high-frequency current to flow through the right induction heating coil 6 to generate magnetic lines of force from the induction heating coil 6 to heat the pan. At the same time, the control unit also drives the fan 12. The driven fan 12 takes in air for cooling from the air inlet 16 and cools it by blowing cooling air to the inverter board 9 and each induction heating coil. Thereafter, the air is exhausted from the exhaust port 17 provided in the rear part on the top plate of the main body 2 to the outside air.

  Next, the liquid intrusion prevention structure of this embodiment will be described in detail with reference to FIG. FIG. 4 is an enlarged view of the vicinity of the exhaust port 17 of FIG. 3, and is a cross-sectional view for explaining the shapes of the liquid receiving member 19 and the liquid intrusion prevention member 18 provided below the exhaust port 17. The liquid receiving member 19 is a bowl-shaped member composed of a rear wall that is also used as the rear surface of the main body 2, a front wall having a height H <b> 1, and a bottom surface that is wider than the front and rear width of the exhaust port 17. In this embodiment, the height H1 is 10 mm or more. Further, a liquid intrusion prevention member 18 that hangs forward from the exhaust port 17 is provided above the liquid receiving member 19. As shown in FIG. 4, the tip 18a of the liquid intrusion prevention member 18 is inclined forward, and the distance from the tip 18a to the bottom surface of the liquid receiving member 19 is the height H1 of the front wall of the liquid receiving member 19. Smaller than H2. The distance between the liquid intrusion prevention member 18 and the front wall of the liquid receiving member 19 is W1 at the upper portion and W2 which is smaller than W1 at the tip 18a. In this embodiment, W2 is set to a distance of 10 mm or less.

  First, the operation of providing the liquid receiving member 19 will be described. As shown in FIG. 3, since the liquid receiving member 19 is provided above the fan device 10, the liquid does not drip into the upstream space of the fan device 10. The liquid can be prevented from being sprayed on the electronic components inside the device, and the reliability of the device can be improved. Further, by providing the front wall having a height H1 in front of the liquid receiving member 19, it is possible to prevent the liquid that has flowed down from the exhaust port 17 toward the liquid receiving member 19 from flowing into the flow path 21. In this embodiment, a turbo fan having a smaller diameter of the fan device intake port 14 than the fan diameter is used as the fan 12 of the fan device, so that the height H1 is set high on the front wall of the liquid receiving member 19. Can do. Therefore, the effect of preventing the liquid falling on the lower wall of the liquid receiving member 19 from flowing into the flow path 21 can be further enhanced.

  Further, by making the shape of the liquid receiving member 19 into a bowl shape, it is possible to receive and store a certain amount of liquid, and even when a large amount of liquid flows into the exhaust port 17, the liquid receiving member 19 is received. In addition, it is possible to prevent liquid from entering the flow path 21. Further, in the present embodiment, since a turbo fan is used as the fan 12, the depth of the ridge of the liquid receiving member 19 can be increased similarly to the above, and the amount of liquid received can be further increased.

  Further, by inclining the bottom surface of the liquid receiving member 19 or adding a curvature, the liquid receiving member 19 can have a function as a liquid introduction path for discharging the intruded liquid to the outside of the body.

  Further, by providing the liquid receiving member 19 inside the main body from the exhaust port 17, the opening on the top plate can be only the exhaust port 17, and a liquid-proof structure such as a waterproof groove is arranged on the top plate. Compared to the case where there is no projecting structure or opening on the top plate, it does not get in the way when cooking, and it can take a large area where the pan can be placed on the top plate of limited size it can.

  Next, the operation of the liquid intrusion prevention member 18 will be described. As shown in FIG. 4, the liquid intrusion prevention member 18 protrudes downward from the top plate 1, and is located at the intermediate position between the front wall of the liquid receiving member 19 and the back of the main body from the surface 21 a of the flow path 21 inside the container. The tip 18a of the liquid intrusion prevention member 18 is provided low. As described above, the liquid intrusion prevention member 18 protrudes from the back surface of the top plate 1, so that the liquid that has entered the main body 2 through the back wall surface of the top plate 1 is dropped onto the liquid receiving member 19, thereby allowing the liquid receiving member 19 to flow. It is possible to prevent liquid from entering the passage 21.

  Further, even if the liquid that has vigorously entered from the exhaust port 17 bounces off the back wall or bottom surface of the liquid receiving member 19, the bounced liquid is blocked by the liquid intrusion preventing member 18, and the liquid enters from the tip 18 a of the liquid intrusion preventing member 18. Since the liquid drops on the receiving member 19, it is possible to effectively prevent liquid from entering the flow path 21.

  Further, since the flow velocity of the exhaust is increased by the throttle structure 20 provided between the liquid intrusion prevention member 18 and the liquid receiving member 19, the liquid enters from the liquid receiving member 19 into the flow path 21 by the increased exhaust flow. Can be prevented. In this embodiment, since the throttle structure 20 is configured using the liquid intrusion prevention member 18 and the liquid receiving member 19, further liquid-proof performance can be further improved without requiring new parts.

  Next, a configuration for discharging the liquid accumulated in the liquid receiving member 19 will be described with reference to FIG. FIG. 7 is a rear cross-sectional perspective view of the induction heating cooker of the present embodiment cut at substantially the center of the exhaust port. As shown in FIG. 7, the bottom surface of the liquid receiving member 19 is inclined, and a drainage flow path 22 for discharging liquid to the outside is provided on the left side wall of the main body 2 downstream of the liquid receiving member 19. A liquid discharge port 23 was provided on the lower surface. Thus, the liquid that has entered the exhaust port 17 via the liquid receiving member 19 can be discharged from a desired location. For example, when the liquid is discharged to the vicinity of the intake port 16 of the fan device 10, the liquid may be sucked into the body by the fan. However, as shown in FIG. By providing it away from the fan device 10, the liquid can be discharged from the lower surface on the left side of the main body without the intake port 16, and re-inhalation of the liquid discharged from the main body 2 can be prevented. Moreover, by fixing the liquid discharge place, the liquid can be discharged to a desired place in the kitchen cabinet, and the cleanability of the kitchen can be improved.

  FIG. 5 shows the configuration of the second embodiment. The second embodiment is a modification using the liquid intrusion preventing member 18b instead of the liquid intrusion preventing member 18 of the first embodiment. The same reference numerals are given to the same components as those in the first embodiment, and the description will be omitted. .

  The liquid intrusion prevention member 18 b is formed by projecting a punched wire net downward from the top plate 1 and coupling it to the front wall of the liquid receiving member 19. As a result, the bending of the exhaust passage can be reduced while preventing the liquid from entering, so that the pressure loss during exhaust can be reduced. Further, by adjusting the hole shape and arrangement of the punched wire mesh, it is possible to provide a liquid-proofing action by the speed increasing effect by the drawing structure shown in the first embodiment. Further, the structure of the exhaust flow path becomes simpler, and the production efficiency can be improved and the production cost can be reduced.

  FIG. 6 shows the configuration of the third embodiment. The third embodiment is a modification using the liquid intrusion prevention member 18c instead of the liquid intrusion prevention member 18 of the first embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. .

  The liquid intrusion prevention member 18c is composed of a plurality of louvered plate-like members, and the same effect as in the second embodiment is obtained. At this time, by adjusting the number and angle of the louver blades, the liquidproof function can be further enhanced, and the pressure loss during exhaust can be reduced. Furthermore, if the angle of the louver is made variable according to the number of rotations of the fan, it is possible to install an optimal liquid-proof structure with little pressure loss according to the exhaust flow rate. Further, by closing the exhaust port 17 when the fan is not operating, it is possible to prevent liquid from entering the flow path 21 inside the container even when the fan is stopped.

  FIG. 8 shows the configuration of the fourth embodiment. The fourth embodiment is an embodiment in which the positions and shapes of the liquid receiving member 19, the drainage flow path 22, and the liquid discharge port 23 of the first embodiment are modified. The description will be omitted.

  In this embodiment, as shown in FIG. 8, the liquid discharge member 22 for discharging the liquid is installed in the center of the back surface of the main body, so that the shape of the exhaust port 17 is symmetric with respect to the liquid receiving member 19 and the liquid intrusion prevention member 18. Therefore, it is easy to realize a simple structure or miniaturization of parts to be used.

  FIG. 9 shows the configuration of the fifth embodiment. The fifth embodiment is an embodiment in which the shape of the liquid receiving member 19 of the first embodiment is modified, the drainage flow path 22 and the liquid discharge port 23 are omitted, and a drainage tank 24 is provided. Equivalent configurations will be denoted by the same reference numerals and description thereof will be omitted.

  In this embodiment, as shown in FIG. 9, a drainage tank 24 for storing liquid is installed downstream of the liquid receiving member 19. Thereby, it is possible to prevent the liquid from dripping into the kitchen cabinet and to prevent the kitchen cabinet from being contaminated. Furthermore, by making it possible to remove the drainage tank 24 to the outside, the cleanability of the drainage tank 24 can also be improved.

1 Top plate 2 Body 3 Operation unit 4 Grill 5 Display operation unit 6 Induction heating coil (right)
7 Induction heating coil (left)
8 Induction heating coil (center)
9 Inverter board 10 Fan device 11 Board case 12 Fan 13 Fan motor 14 Fan device intake port 15 Discharge port 16 Intake port 17 Exhaust port 18 Liquid intrusion prevention member 19 Liquid receiving member 20 Restriction structure 21 Channel 22 Drainage channel 23 Liquid Discharge port 24 Drain tank

Claims (6)

A top plate arranged on the upper surface of the main body,
A heating coil disposed below the top plate;
A substrate for driving and controlling the heating coil;
A fan device for cooling the heating coil and the substrate;
An air inlet for supplying air to the fan device;
An exhaust port that opens to the upper surface of the main body and exhausts air that has cooled the heating coil and the substrate;
An induction heating cooker comprising a liquid receiving member provided below the exhaust port and configured by a front wall, a rear wall, and a bottom surface having a width wider than the front and rear widths of the exhaust port. The induction heating cooker according to claim 1,
An induction heating cooker, wherein a liquid intrusion prevention member protruding downward from the top plate is provided in front of the exhaust port and above the liquid receiving member. The induction heating cooker according to claim 2,
An induction heating cooker, wherein a front wall of the liquid receiving member is made higher than a tip of the liquid intrusion preventing member. The induction heating cooker according to claim 2,
An induction heating cooker, wherein a tip of the liquid intrusion prevention member is inclined forward. In the induction heating cooker according to any one of claims 1 to 4,
An induction heating cooker, wherein the liquid receiving member is inclined and a drainage flow path is provided at a lower end of the inclined liquid receiving member. In the induction heating cooker according to any one of claims 1 to 4,
An induction heating cooker characterized in that the liquid receiving member is inclined and a drainage tank is provided at a lower end of the inclined liquid receiving member.