CN103827607A - Refrigerator - Google Patents

Abstract

The present invention provides a refrigerator comprising: a refrigerating compartment installed in an upper part; a freezing compartment provided in a lower part; and a fan arranged in an upper part of a cooler for forcibly blowing generated cold air to each compartment. In addition, there is a refrigerating room duct device (80) including a refrigerating room air supply duct for blowing cold air to the refrigerating room and a refrigerating room returning duct for returning the cold air to the cooler. In the duct unit discharge portion (90) of the refrigerating room duct unit (80), the cross-sectional area of the discharge opening inside the refrigerator is designed to be larger than the minimum cross-sectional area in the air duct of the duct unit discharge portion (90). According to this configuration, the temperature in the refrigerator compartment can be made uniform and dew condensation can be prevented, so that the temperature uniformity of each storage room and the reliability around the plumbing system can be ensured.

Description

Cold storage

technical field

The present invention relates to a refrigerator for forcibly circulating cold air generated in a cooler to cool storage rooms having different temperature ranges.

Background technique

Fig. 9 is a longitudinal sectional view of a conventional refrigerator.

As shown in FIG. 9 , the casing 1 is composed of a heat insulating box body 5 filled with a heat insulating material 4 between the inner box 2 and the outer box 3 . The refrigerator is provided with a refrigerator compartment 6, a thermal insulation compartment 7, and a freezer compartment 8 from above. A refrigerator door 9 is provided in front of the refrigerator compartment 6 , an insulation door 10 is provided in front of the heat preservation chamber 7 , and a freezer door 11 is provided in front of the freezer chamber 8 .

The refrigerating chamber 6 and the heat preservation chamber 7 are separated by a partition plate 12 having a heat insulation effect, and the heat preservation chamber 7 and the freezer chamber 8 are separated by a partition plate 13 having a heat insulation effect. A pipe 14 connected to the freezer compartment 8 is provided inside the partition plate 13 .

In the refrigerator compartment 6, a refrigerator compartment shelf 6a and a refrigerator compartment case 6b for accommodating food are arranged. In addition, a tube sheet 15 (tube on sheet: plate-and-tube evaporator) is arranged in contact with the wall surface on the back of the inner box 2 of the refrigerating room 6, and the refrigerating room 6 has a cooling wall surface 6c cooled by the tube sheet 15. Moreover, the cooler 16 and the fan 17 located above the cooler 16 are arrange|positioned at the back of the freezer compartment 8. As shown in FIG.

In addition, in the heat preservation chamber 7, a heat preservation chamber box 7a for accommodating food is disposed, and a duct 18 having a damper 19 inside is disposed on the back surface of the heat preservation chamber 7.

The operation|movement of the refrigerator comprised as mentioned above is demonstrated below.

In the refrigerator compartment 6, the tube sheet 15 is in contact with the back side of the inner case 2 of the refrigerator compartment 6, and the inner case 2 surface of the refrigerator compartment 6 becomes a cooling wall surface 6c, and the refrigerator compartment shelves 6a, the refrigerator compartment shelves 6a, and the refrigerator compartment in the refrigerator compartment 6 are refrigerated by natural cooling. Cooling of chamber box 6b.

In the freezer compartment 8 , the cold air from the cooler 16 inside the cooling compartment is forcibly circulated by the fan 17 to cool the freezer compartment 8 . The cold air circulated in the freezer compartment 8 is returned to the cooler 16 .

In the heat preservation chamber 7 , a part of cold air from the cooler 16 flows into the duct 14 through the fan 17 and circulates to the duct 18 located on the back side of the heat preservation chamber 7 . The cold air flowing into the duct 18 passes through the damper 19, and is discharged from a plurality of outlets 20 to the heat preservation chamber box 7a. After heat exchange with the air in the heat preservation chamber box 7a, it is sucked into the cooler 16 located at the back side of the heat preservation chamber 7. The return pipe returns to the cooler 16.

As mentioned above, in the conventional refrigerator, the partition plate 12 is divided into the refrigerating room 6 and the heat preservation room 7 up and down, and there is no channel for circulating cold air between the refrigerating room 6 and the heat preservation room 7 . The refrigerating room 6 is cooled to an appropriate temperature by the cooling of the tube sheet 15 . The thermal insulation chamber 7 is cooled by circulating the latent heat of evaporation of the cooler 16 into the thermal insulation chamber 7 by the fan 17 . In addition, by using the air door 19 that detects the temperature of the heat preservation chamber 7 to control the amount of circulating cold air, the temperature of the heat preservation chamber 7 is kept constant, thus the temperature of the food in the heat preservation chamber box 7a can be kept constant, and the freshness of the food can be improved. . (For example, refer to Patent Document 1).

However, in the above-mentioned conventional structure, no air passage is formed in the refrigerator compartment 6, and the temperature difference in the refrigerator tends to increase between a place close to the tube plate 15 and a place far away from the tube sheet 15.

In addition, in order to cool the inside of the heat-retaining chamber 7 evenly, although the cold air is discharged from a plurality of outlets 20 provided on the heat-retaining chamber box 7a side of the heat-retaining chamber 7, due to the temperature difference with the heat-retaining chamber 7, there may Condensation is prone to occur around exit 20.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2005-195293

Contents of the invention

In order to solve the above conventional problems, the refrigerator according to the present invention is provided with a refrigerator compartment, a freezer compartment, and a partition wall for thermally insulating and partitioning the refrigerator compartment and the freezer compartment. In addition, a cooler is installed behind the freezer to generate cold air; and a cooling chamber is arranged above the cooler and provided with a fan for forcibly blowing the generated cold air to the refrigerator and freezer. There are also: a refrigerating room air supply duct for sending cold air to the refrigerating room through a fan; and a duct device having a refrigerating room return duct for returning the cold air discharged into the refrigerating room to the cooler. In addition, in the duct unit discharge unit provided in the duct unit for the refrigerating room, the cross-sectional area of the discharge opening inside the discharge unit refrigerator is larger than the minimum cross-sectional area in the duct of the discharge unit. According to this configuration, the temperature in the refrigerating chamber can be made uniform and dew condensation can be prevented, so that the uniformity of the temperature of each storage chamber and the reliability around the plumbing system can be ensured.

Description of drawings

Fig. 1 is a longitudinal sectional view of a refrigerator according to a first embodiment of the present invention.

Fig. 2 is a front view of the refrigerator main body according to the first embodiment of the present invention.

Fig. 3 is a schematic diagram of a main part of the refrigerator according to the first embodiment of the present invention.

Fig. 4 is a perspective view of the refrigerator compartment duct system of the refrigerator according to the first embodiment of the present invention.

Fig. 5 is an exploded perspective view of the refrigerator compartment ducting device of the refrigerator according to the first embodiment of the present invention.

Fig. 6 is a perspective view of the back side of the refrigerator compartment of the refrigerator according to the first embodiment of the present invention.

7 is a cross-sectional view of a discharge port of the refrigerator compartment ducting device of the refrigerator according to the first embodiment of the present invention.

Fig. 8 is a cross-sectional view of an outlet of the refrigerator compartment ducting device of the refrigerator according to the second embodiment of the present invention.

Fig. 9 is a longitudinal sectional view of a conventional refrigerator.

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(first embodiment)

FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a front view of a refrigerator main body according to Embodiment 1 of the present invention. Fig. 3 is a schematic view of a main part of the refrigerator according to the first embodiment of the present invention, and Fig. 4 is a perspective view of a refrigerator compartment duct system of the refrigerator according to the first embodiment of the present invention. Fig. 5 is an exploded perspective view of the refrigerating room duct device of the refrigerating room according to the first embodiment of the present invention, Fig. 6 is a perspective view of the inner side of the refrigerating room of the refrigerating room according to the first embodiment of the present invention, and Fig. A cross-sectional view of a discharge port of the refrigerator compartment duct system of the refrigerator according to the first embodiment.

In FIG. 1 , a heat insulating box 31 of a refrigerator 30 is mainly composed of an outer box 32 made of a steel plate and an inner box 33 formed of resin such as ABS. The space between the outer case 32 and the inner case 33 is filled with a foam heat insulating material 34 such as rigid urethane foam to insulate the surroundings. The heat insulating box 31 is divided into a plurality of storage rooms, the refrigerating room 35 is arranged in the uppermost part, the switching room 36 is arranged in the lower part of the refrigerating room 35, and the freezing room 37 is arranged in the lowermost part.

At the front opening of the refrigerator compartment 35, the refrigerator compartment door 38 is pivotally supported so that the front opening can be opened and closed freely, and at the front opening of the switch compartment 36, a switch door is pivotally supported so that the front opening can be opened and closed freely. Chamber door 39. Freezer compartment door 40 is pivotally supported on the front opening of freezer compartment 37 so that the front opening can be freely opened and closed.

The temperature of the refrigerating room 35 is set with the temperature without freezing as the lower limit for refrigerated storage, usually set at 1°C to 5°C, and the switching room 36 can be set to switch the temperature from the freezing temperature zone to the refrigerating temperature zone, - From 18°C to 4°C, the temperature can be set in 1°C intervals. The freezer compartment 37 is set in the freezing temperature zone, and the temperature is usually set at -22°C to -15°C for cryopreservation, but in order to improve the state of cryopreservation, the temperature is sometimes set at a low temperature such as -30°C or -25°C. set up.

Moreover, the switch chamber 36 and the freezer chamber 37 are partitioned up and down by the 1st partition wall 41, and the refrigerator chamber 35 and the switch chamber 36 are partitioned up and down by the 2nd partition wall 42. As shown in FIG.

In addition, a cooling chamber 43 for generating cold air is provided on the back surface of the freezing chamber 37, and a cooler 44 is arranged inside. The cooling chamber 43 is thermally separated from the freezing chamber 37 by a coil cover 45 for covering. A fan 46 for forcibly blowing the generated cold air is arranged above the cooler 44 , and a defrosting heater 47 for removing frost and ice adhering to the cooler 44 is provided below the cooler 44 . Specifically, the defrosting heater 47 is a glass tube heater, and especially when the refrigerant is a hydrocarbon refrigerant gas, a double glass tube heater in which glass tubes are double-layered is used as an anti-explosion countermeasure. In addition, the coil cover (coil cover) 45 is covered with a resin panel 45a and a heat-insulating material such as styrene material to form the holding part of the fan 46 and the heat-insulating coil cover (insulated) of the cold air passage. coilcover) 45b formation.

Moreover, the duct apparatus 49 which has the ventilation duct 48 which blows cold air to the refrigerating compartment 35 and the switching compartment 36 is provided in the back surface of the switching compartment 36. As shown in FIG. The air supply duct 48 includes a refrigerating room air supply duct 48 a for blowing cold air to the refrigerating room 35 and a switching room air supply duct 48 b for blowing cold air to the switching room 36 . The refrigerating room air supply duct 48a and the switching room air supply duct 48b are arranged side by side in the duct device 49 to face up and down, respectively. A damper device 50 for adjusting the amount of cold air to be blown into the refrigerator compartment 35 and the switching compartment 36 is embedded in the duct unit 49 . And the damper device 50 is arrange|positioned in each duct of the refrigerating room air supply duct 48a and the switching room air supply duct 48b, and controls the amount of cold air passing through separately.

In addition, the cool air discharged from the refrigerating room outlet 35a of the refrigerating room 35 through the refrigerating room air supply duct 48a is returned from the refrigerating room returning port 35b provided on the lower back side of the refrigerating room 35 through the refrigerating room returning duct 51a shown in FIG. 6 . Cooler 44. The cold air discharged to the switching chamber 36 from the switching chamber upper discharge port 36a and the switching chamber lower discharge port 36b through the switching chamber air supply duct 48b passes through the switching chamber return port 36c arranged at the bottom of the duct device on the back side of the switching chamber 36. A chamber return conduit (not shown) returns to cooler 44 .

The refrigerating room return duct 51a is arranged side by side with the air supply duct 48, so that the three ducts of the refrigerating room air supply duct 48a, the switching room air supply duct 48b and the refrigerating room return duct 51a are arranged side by side on the duct device 49 facing up and down. The switching room return duct is adjacent to the refrigerating room return duct 51a and arranged in a front-to-back positional relationship, and the switching room return duct is arranged in front of the refrigerating room return duct 51a.

The duct device 49 is formed to be relatively large in the height of the back surface of the switching chamber 36 and the left and right width dimensions, and the refrigerating room air supply duct 48a and the switching room air supply duct 48b are arranged in the left and right width direction of the switching chamber 36, that is, in the width direction of the duct device 49. About the central part. The refrigerating room return duct 51a and the switching room return duct are collectively arranged on one side of the duct device 49 centered on the refrigerating room air supply duct 48a and the switching room air supply duct 48b.

In the cooling chamber 43, as shown in FIG. The cool air returned from the refrigerator compartment 35 and the switch compartment 36 is introduced into the cool air return duct 71 .

Next, refrigerator compartment 35 will be described.

The refrigerating room 35 is divided into a plurality of regions up and down in the room with a plurality of shelves 61, and the refrigerating room air supply duct 48a formed on the back side of the refrigerating room 35 is formed in the rear of a plurality of shelves 61 along the vertical direction, and each shelf 61 Correspondingly, a refrigerator compartment discharge port 35a is opened. In addition, the refrigerator compartment air supply duct 48a may form a branch path (not shown) that branches left and right in the space of the refrigerator compartment 35 . By having a branch path, the temperature distribution in the space in the width direction of the refrigerator compartment 35 can be made uniform.

The refrigerating room ducting device 80 is disposed on the back of the refrigerating room 35 , and the refrigerating room ducting device 80 and the inner box 33 form an air duct of the refrigerating room 35 . In addition, the refrigerating room duct 80 is combined with the second partition wall 42 that partitions the refrigerating room 35 and the switching room 36 up and down. The temperature range of the refrigerator compartment 35 is adjusted by circulating the refrigerator discharge cold air from the cooling chamber 43 and the return cold air from the refrigerator chamber 35 flowing through the refrigerator compartment duct device 80 through the duct device 49 of the switch chamber 36 .

The refrigerating room ducting device 80 includes a refrigerating room ducting member 81 formed of styrofoam and a resinous refrigerating room ducting panel 86 covering the front surface of the refrigerating room ducting member 81 . A sealing foam member 82 is attached to the sealing portion of the refrigerating room duct unit 80 .

In addition, the lower surface and the rear surface of refrigerator compartment duct member 81 are in contact with partition wall duct member 87 , partition wall plate member 88 , and inner box 33 , which are upper portions of second partition wall 42 . Furthermore, the foam member sealing portion 84 provided over the partition wall duct member 87 , the partition wall plate member 88 , and the inner tank 33 compresses and tightly seals the foam member 82 . By adopting this structure, the sealing connection part of the refrigerating room ducting unit 80 is formed with a sealing-reinforced structure, and is sealingly connected in the vertical direction and the front-rear direction. Furthermore, the back surface of the refrigerating room duct member 81 , that is, the refrigerating room duct crimping seal portion 83 a is airtightly connected to the inner box crimping sealing portion 83 b of the inner box 33 .

The shape of the refrigerating room duct crimping seal part 83a of the refrigerating room duct member 81 is made into a convex-convex shape. By adopting this structure, cold air is discharged from the side discharge opening 91 so as to enclose the entire refrigerator compartment 35 , and the temperature of the refrigerator compartment 35 is uniformized.

The sealing foam member 82, the refrigerating compartment duct crimp seal portion 83a, and the foam member seal portion 84 form a sealed configuration. Furthermore, instead of connecting the refrigerating room duct crimping seal portion 83a and the foam member seal portion 84 on the same line, the respective seal portions are arranged in parallel and overlapped in parallel. By adopting this structure, the contact distance of the switching portion can be sufficiently ensured, and the deviation of components and assembly deviation can be absorbed, so that the sealing performance can be improved.

In addition, the inner case crimping seal portion 83b of the inner case 33 is provided with a step to emphasize that it is a different surface from the peripheral portion. By adopting this structure, it is easy to secure the flat surface accuracy of the seal portion during molding, and the sealing performance of the contact with the refrigerator compartment duct pressure-bonding seal portion 83a can be improved.

In addition, although the seal reinforcement structure was demonstrated using the form of the refrigerator compartment 35, these seal reinforcement structures can also be used in the switching chamber 36 similarly to the refrigerator compartment 35. FIG.

Also, refrigerating room duct member 81 has side discharge openings 91 for circulating cool air that circulates cool air into refrigerating compartment 35 from the side, and upper discharge openings 92 for circulating cool air that blows cool air downward from above. And the duct apparatus discharge part 90 is provided in the front surface of the refrigerating room duct panel 86 which covers the surface of the refrigerating room duct member 81. As shown in FIG.

Moreover, the control board|substrate 66 which controls the whole refrigerator 30 is arrange|positioned at the position corresponding to the back surface of the switch chamber 36 in the outer case 32. As shown in FIG.

In addition, a refrigerating room temperature sensor (not shown) for detecting the temperature of the refrigerating room 35 is provided in the refrigerating room return port 35b, and a switching room temperature sensor (not shown) for detecting the temperature of the switching room 36 is provided in the switching room returning port 36c. Inside.

Next, the operation|movement and effect|action of the refrigerator comprised as mentioned above are demonstrated.

A part of the cold air generated by the cooler 44 of the cooling chamber 43 is forcibly blown forward by the fan 46 , and the freezing chamber 37 is cooled by the cold air discharged from the outlet of the covering coil 45 . The cold air is introduced into the lower part of the cooler 44 through the return port opened at the lower part of the covering coil 45 , heat exchange is performed in the cooler 44 , and fresh cold air is circulated repeatedly through the fan 46 . Thereby, freezer compartment 37 is cooled to an appropriate temperature by control of a freezer compartment sensor (not shown).

In addition, the cool air discharged above the fan 46 is introduced into the duct unit 49 through the communication hole of the first partition wall 41 from the cool air discharge port of the covering coil 45 . And, when the cold air discharged into the refrigerator compartment 35 is detected by the refrigerator compartment temperature sensor that the indoor temperature is higher than the set temperature, the refrigerator compartment damper (not shown) of the damper device 50 is opened, and then passes through the refrigerator compartment air supply duct 48a. Cold air is discharged from the refrigerator compartment outlet 35 a of the refrigerator compartment 35 to cool the interior of the refrigerator compartment 35 . The circulated cool air becomes the air with the air in the refrigerator compartment 35 and the moisture contained in the stored goods, and is introduced into the refrigerator compartment return port 35b. The introduced air passes through the refrigerating room return duct 51 a of the duct unit 49 and is introduced into the cool air return passage 71 formed by the covering coil 45 and the back wall of the cooling room 43 . The air that has passed through the cold air return channel 71 is introduced into the lower part of the cooler 44 from the cold air return port 77 to exchange heat with the cooler 44, and the fresh cold air is forced to be blown by the fan.

Thereby, even if refrigerating room 35 is located away from cooler 44, it is possible to control the interior of the room at the set temperature.

In addition, the cooling of refrigerating room 35 is performed by side discharge opening 91 and upper discharge opening 92 provided in refrigerating room duct member 81 so that cold air surrounds refrigerating room 35 from the side and top. In addition, through the duct device discharge part 90 provided on the front side of the refrigerating room duct panel 86, the cold air is also discharged in the front direction, thereby cooling the vicinity of the refrigerating room ducting member 81, and realizing cooling in the refrigerating room 35. homogenization of the temperature.

The temperature difference between the cool air discharged from the duct unit discharge portion 90 and the temperature in the refrigerator compartment 35 is large. In the case where the hole sizes of the duct member discharge port 90a and the duct panel discharge port 90b are the same, the end surface of the duct panel discharge port 90b formed of a resin material is also cooled by the discharged cold air, so that the duct panel 86 of the refrigerator room Condensation occurs on the surface. This is the case where the minimum dimension [A] of the discharge port section in the cross section of the discharge port shown in FIG. .

In order to solve the problem of condensation, it is necessary to satisfy the minimum dimension [A] of the discharge port cross section < the storage compartment side opening dimension [B], and the minimum discharge port cross-sectional dimension [A] < the discharge port opening dimension [C]. condition. In this case, [B]<[C] is preferable, and it is not an absolute condition when there is a relationship that the duct panel discharge port 90b is not cooled depending on the flow state of the cold air. In addition, as a structure that can be easily molded with a metal mold, the minimum dimension [A] of the outlet cross-section is generally located on the wall surface in the air duct.

It is preferable that the shape of the storage compartment side opening of the duct member discharge port 90a is formed in an R shape with a fillet radius (rounded shape). The refrigerating room duct member 81 is formed of a foam heat insulating material such as foamed styrene, and its end surface is formed in an R shape, so that the foamed particles can be reliably hardened on the end surface. Thereby, since the shape of the foam heat insulating material viewed from the discharge opening becomes attractive, it is possible to improve the appearance quality of the refrigerating room. In order to ensure moldability, the R shape of the storage compartment side opening of the duct member discharge port 90a is preferably 3R or larger.

In the present invention, the refrigerating room ducting device 80 of the refrigerating room 35 has been described, and it can be applied to any storage room where there is a temperature difference between the storage room temperature and the discharged cold air, and dew may condense on the surface of the ducting device.

(Second Embodiment)

Fig. 8 is a cross-sectional view around duct unit discharge portion 90 in the refrigerator compartment according to the second embodiment of the present invention.

As in the case described in FIG. 7 showing the first embodiment, by satisfying the minimum dimension [A] of the discharge port cross section The condition of the opening dimension [C] prevents dew condensation from being generated on the surface of the refrigerating room duct panel 86 . Preferably, the storage compartment side opening of the duct member discharge port 90a is formed in an R-shape with a rounded corner radius.

In addition, by setting the minimum dimension [A] of the outlet cross section < the air passage side opening dimension [D] in the outlet cross section, it is possible to reduce the air passage resistance of cold air flowing into the outlet. In addition, by forming the end surface on the side of the opening on the air passage side also in an R shape, it is possible to further reduce the air passage resistance.

As described above, the refrigerator according to the present invention is provided with a refrigerator compartment, a freezer compartment, and a partition wall for thermally insulating and partitioning between the refrigerator compartment and the freezer compartment. In addition, there are: a cooler for generating cold air installed behind the freezer; and a cooling chamber forcibly blowing the generated cold air to the refrigerator and freezer with a fan arranged above the cooler. Furthermore, a duct unit is provided which has a refrigerator room air supply duct for blowing cold air into the refrigerator room by a fan, and a refrigerator room return duct for returning cold air exhausted into the refrigerator room to the cooler. In addition, in the duct unit discharge unit provided in the refrigerating room duct unit, the cross-sectional area of the discharge opening inside the discharge unit refrigerator is larger than the minimum cross-sectional area in the discharge unit air duct. According to this configuration, the temperature in the refrigerating chamber can be made uniform and dew condensation can be prevented, so that the uniformity of the temperature of each storage chamber and the reliability around the plumbing system can be ensured.

In addition, the duct apparatus of the present invention has a panel formed of resin parts on the surface of the air supply duct of the refrigerator compartment, thereby improving the strength that is insufficient due to only the panel heat insulating member, and can increase the degree of freedom of color and shape, I realize the improvement of the design of the store room that a visitor sees.

In addition, the discharge port of the panel of the present invention has a cross-sectional area larger than the minimum cross-sectional area of the internal cross-sectional area of the discharge port provided in the air supply duct of the refrigerating room. Cooling can prevent dew condensation on the surface of the panel due to the temperature difference in the storage room, and can ensure quality reliability.

In addition, the discharge port of the air supply duct for the refrigerating room of the present invention has an R-shaped surface at the opening inside the refrigerating room, thereby improving the forming accuracy of the heat insulating member and suppressing irregularities on the surface of the portion viewed from the storage room. , It is possible to improve the quality of the piping device.

In addition, in the present invention, by arranging the outlet of the air supply duct in the refrigerator room at a height of 1 m or more from the floor, the outlet is arranged at a height where it is easy to enter the customer's field of vision, so it is possible to further exert the quality, reliability and quality of the outlet. Effect.

In addition, in the outlet of the air supply duct in the refrigerator compartment of the present invention, the cross-sectional area of the discharge opening on the side of the air duct has a cross-sectional area larger than that of the minimum cross-sectional area in the discharge air duct, thereby reducing the amount of air flowing into the air supply duct outlet in the refrigerator compartment. The air duct resistance of the cold air can improve the efficiency of the air duct circulation of the air conditioner.

Industrial availability

As described above, the refrigerator of the present invention can be applied to household or commercial refrigerators.

Symbol Description

1 chassis

2 inner boxes

3 Outer boxes

4 insulation material

5 heat insulation box

6 cold room

6a Refrigerator shelf

6b Freezer box

6c cooling wall

7 insulation room

7a Insulated chamber box

8 Freezers

9 Open and close the refrigerator door

10 opening and closing door of insulation room

11 Freezer opening and closing door

12 dividers

13 Divider

14 pipes

15 tube sheets

16 cooler

17 fans

18 pipes

19 damper

20 outlet

30 cold storage

31 Heat insulation box

32 Outer boxes

33 inner box

34 Foam insulation material

35 cold room

35a Refrigerator outlet

35b Refrigerator return port

36 switch room

36a Switch chamber upper outlet

36b Switch chamber lower outlet

36c switch chamber return port

37 freezer

38 Refrigerator door

39 switch chamber door

40 freezer door

41 The first partition wall

42 second partition wall

43 cooling room

44 cooler

45 coiled tubing for covering

45a Paneling

45b Coils for insulating coverings

46 fans

47 Defrost heater

48 air duct

48a Cooling room air supply duct

48b Switching room air supply duct

49 Pipe fittings

50 damper device

51a Refrigerator return duct

61 shelf

66 control board

71 Air-conditioning return channel

75 Partition parts

77 Air-conditioning return port

80 cold room plumbing

81 cold room plumbing parts

82 Sealing foam member

83a Cold room pipe crimp seal

83b Inner box crimp seal

84 Foam part seal

86 Cold Room Duct Paneling

87 Dividing wall piping components

88 Partition panel parts

90 Pipe fitting discharge

90a Pipe component discharge

90b Duct panel discharge

91 side discharge opening

92 Upper discharge opening

Claims (6)

1. a freezer, is characterized in that, has:

Refrigerating chamber;

Refrigerating chamber;

Partition wall, it is by heat insulation separation between described refrigerating chamber and described refrigerating chamber;

Cooler, it is arranged at the rear of described refrigerating chamber, generates cold air;

Cooling chamber, the top that it is disposed at described cooler, is provided with the fan that generated cold air is blowed to described refrigerating chamber and described refrigerating chamber forcibly; With

Plumbing installation, it has by described fan to the refrigerating chamber air supply duct of described refrigerating chamber blowing cooling air and makes the cold air of the inside that is discharged to described refrigerating chamber return to the refrigerating chamber Returning pipe of cooler,

Be arranged at the plumbing installation discharge portion of described refrigerating chamber air supply duct, compared with minimum cross-sectional area in described plumbing installation discharge portion air channel, the area of section of the outlet opening portion of described plumbing installation discharge portion freezer inner side is large.

2. freezer as claimed in claim 1, is characterized in that:

Described plumbing installation has on described refrigerating chamber air supply duct surface the panelling being formed by resin component.

3. freezer as claimed in claim 2, is characterized in that:

Described panelling has outlet, and the area of section of this outlet is larger than the minimum cross-sectional area portion of duct cross-section area of described plumbing installation discharge portion that is located at described refrigerating chamber air supply duct.

4. freezer as claimed in claim 1, is characterized in that:

The described plumbing installation discharge portion of described refrigerating chamber air supply duct has rounding forming face in described outlet opening portion.

5. freezer as claimed in claim 1, is characterized in that:

The described plumbing installation discharge portion of described refrigerating chamber air supply duct is configured in apart from height more than floor 1m.

6. the freezer as described in any one in claim 1～5, is characterized in that:

The described plumbing installation discharge portion of described refrigerating chamber air supply duct, the area of section of its air channel side opening portion is larger than the minimum cross-sectional area portion in described plumbing installation discharge portion air channel.

Images