TWI675173B - refrigerator - Google Patents

Abstract

The refrigerator system includes a storage room that is set to a higher temperature than other surrounding rooms and stores stored items. The storage room is provided with a vacuum insulation material at each wall portion that separates the storage room.

Description

   Refrigerator   

The present invention relates to a refrigerator in which a vacuum insulation material is arranged on each wall portion of a partitioned storage room.

In the conventional refrigerators, the refrigerator compartment, the ice-making compartment, the freezer compartment, and the vegetable compartment are arranged in this order from the top. In the case of this arrangement, the vegetable compartment is arranged at the lowest position of the refrigerator. Therefore, in order to take out vegetables from the vegetable room, the user needs to bend the knees or bend down.

Here, when comparing the number of times of opening and closing the door or the time of opening the door between the vegetable room and the freezing room, although there are individual differences, generally the number of times of opening and closing the door of the vegetable room is relatively large, and the time of opening the door is relatively long. Therefore, it is expected that the convenience of the refrigerator as a whole will be improved by replacing the positions of the vegetable compartment and the freezer compartment and arranging the vegetable compartment above the freezer compartment.

However, in the conventional refrigerator, first, in order to improve the thermal efficiency, a plurality of rooms in a freezing temperature zone are concentrated in one place.

The conventional refrigerator has a configuration in which a cooler is arranged on the back of the freezer compartment, and no special heat-insulating element is provided between the freezer compartment and the cooler, and it is also difficult to cause defects such as dew and frost.

In contrast, in order to improve the convenience of the user, it is thought that the refrigerators are arranged in the order of the refrigerator compartment, the ice-making compartment, the vegetable compartment, and the freezer compartment from above. This refrigerator is configured to be replaced alternately from the chambers of the upper refrigerating temperature zone (positive temperature) and the freezing temperature zone (negative temperature).

Therefore, the refrigerator of such an arrangement is inferior to a conventional refrigerator in terms of thermal efficiency in the first place. In addition, in order to ensure the required heat insulation performance, the thickness of the wall portion of each room is increased. Comparing the cases with the same shape outside the refrigerator, the space that can accommodate food is reduced.

Moreover, the refrigerator of this arrangement is arrange | positioned in the back of a vegetable room next to a cooler, and the wall part which separates a vegetable room and a cooler is required to have heat insulation performance higher than conventional. In order to improve the heat insulation performance, the thickness of the wall portion may be increased. However, as described above, the food storage space is sacrificed.

Therefore, as a conventional heat insulating element, a molded product of foamed styrene having good processability and convenient installation and removal or handling is used. However, as a heat-insulating element, by using a vacuum heat-insulating material having a higher heat-insulating performance (small thermal conductivity), both the heat-insulating performance and securing of a food storage space can be targeted.

[Leading Patent Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2012-242072

When a vacuum insulation material is arranged between the vegetable room and the cooler, an air path is required in order to send the cool air cooled by the cooler into the vegetable room. In Patent Document 1, there is a description "the vacuum insulation material is provided on the partition wall constituting the inner wall surface, except for the front surface of the inflow port and the outflow port". In this manner, there is a method in which all of the inflow port and the outflow port are covered with a vacuum insulation material.

However, in this case, it is necessary to drill holes in the vacuum insulation material, or to provide a gap in the vacuum insulation material, or to use a plurality of vacuum insulation materials. Therefore, manufacturing costs increase.

The present invention was developed in order to solve this problem, and an object thereof is to provide a refrigerator, which can reduce manufacturing costs, simplify assembly, and have high manufacturing efficiency.

The refrigerator according to the present invention includes a storage compartment that is set to a higher temperature than other surrounding compartments and stores stored items. The storage compartment is provided with a vacuum insulation material at each wall portion that separates the storage compartment.

In the refrigerator according to the present invention, the storage compartment is provided with a vacuum insulation material on each wall portion separating the storage compartment. Therefore, the covering area of the storage room by the vacuum insulation material is increased as much as possible. In addition, the vacuum heat-insulating material has a shape that can be easily manufactured, such as a rectangle, and does not provide cutouts or holes in the vacuum heat-insulating material. With a simple structure, the required heat-insulating performance can be secured. Therefore, manufacturing costs can be reduced, assembly is simple, and manufacturing efficiency is good.

1‧‧‧ refrigerator

2‧‧‧ freezer

3‧‧‧ ice making room

4‧‧‧Temperature Switching Room

5‧‧‧ Vegetable Room

6‧‧‧ freezer

7‧‧‧Refrigerant circuit

8‧‧‧compressor

9‧‧‧air-cooled condenser

10‧‧‧ Condenser

11‧‧‧ prevent condensation tube

12‧‧‧ dryer

13‧‧‧ Buck device

14‧‧‧ cooler

15‧‧‧ blower

16a ~ 16d‧‧‧Temperature sensor

17‧‧‧Control Board

18a ~ 18c‧‧‧Air volume adjustment device

19‧‧‧Box

20‧‧‧Wall

21‧‧‧ Sheet metal

22‧‧‧Inner Box

23‧‧‧Insulation

24, 33, 36, 39‧‧‧Vacuum insulation materials

25‧‧‧ support

26‧‧‧ spacer

27‧‧‧Cooler Room

28, 69, 74‧‧‧ Return Air

30, 41, 65, 68, 73‧‧‧ blow out the wind

31‧‧‧Back wall

32‧‧‧Top wall

34. 37‧‧‧ Urethane Foam

35‧‧‧ bottom wall

38, 42‧‧‧ Exterior of insulation wall

40‧‧‧Foam insulation

44, 70‧‧‧ air-conditioning outlet

45、72‧‧‧Air-conditioning return port

46‧‧‧Insulation heater

47‧‧‧heat pipe

48‧‧‧flow path switching three-way valve

49、50‧‧‧Export tube

51‧‧‧ Capillary

52‧‧‧Stepping motor

53‧‧‧Valve body

54‧‧‧Magnetized rotor

55‧‧‧ sun gear

56‧‧‧Turning gear

57‧‧‧Rotating pad

58‧‧‧Valve seat

59‧‧‧Outline Box

60‧‧‧Floor

61 ~ 63‧‧‧ orifice

64‧‧‧ exit orifice

66‧‧‧ drip tray

67‧‧‧heater

71‧‧‧Ice-making mechanism

75‧‧‧ Refrigerated return port

76‧‧‧ Refrigerated return air duct

77‧‧‧hole

78‧‧‧ Slider

Fig. 1 is a perspective view showing the appearance of a refrigerator according to a first embodiment of the present invention.

Fig. 2 is a diagram showing a refrigerant circuit of the refrigerator according to the first embodiment of the present invention.

Fig. 3 is an explanatory view showing a vertical cross section in the left-right direction of the refrigerator according to the first embodiment of the present invention.

Fig. 4 is an explanatory view showing a cross section of a part of a wall portion of a cabinet of a refrigerator according to a first embodiment of the present invention.

Fig. 5 is an explanatory view showing a cross section of a part of a wall portion of a left side surface portion of a cabinet of the refrigerator according to the first embodiment of the present invention.

Fig. 6 is an explanatory view showing another example of a cross section of a part of a wall portion of a cabinet of a refrigerator according to the first embodiment of the present invention.

Fig. 7 is an explanatory view showing another example of a cross section of a part of a wall portion of a cabinet of a refrigerator according to the first embodiment of the present invention.

Fig. 8 is a front and rear longitudinal cross-sectional view showing the periphery of the lower portion of the refrigerator according to the first embodiment of the present invention.

Fig. 9 is a left and right vertical cross-sectional view showing the periphery of the lower portion of the refrigerator according to the first embodiment of the present invention.

Fig. 10 is a left and right vertical cross-sectional view showing the periphery of the vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 11 is an explanatory view showing a longitudinal cross-section of another example of the top wall portion in the vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 12 is an explanatory view showing a longitudinal cross-section of another example of the top wall portion in the vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 13 is a view showing another example of the left and right vertical cross-sections around the vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 14 is a diagram showing another example of the left and right vertical cross sections of the periphery of the vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 15 is a front view showing a rear wall portion of the refrigerator according to the first embodiment of the present invention as viewed from a vegetable room.

Fig. 16 is a front view showing another example of the rear wall portion of the refrigerator according to the first embodiment of the present invention, as viewed from the vegetable compartment.

Fig. 17 is a front view showing another example of the rear wall portion of the refrigerator according to the first embodiment of the present invention as viewed from the vegetable compartment.

Fig. 18 is a schematic view showing a vacuum insulation material in a wall portion partitioning a part of a vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 19 is a schematic view showing a vacuum insulation material on a wall portion partitioning a part of a vegetable compartment of the refrigerator according to the first embodiment of the present invention, viewed from the back.

Fig. 20 is a schematic diagram showing a thermal insulation heater provided in a vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 21 is a schematic diagram showing a heat radiation pipe provided in a vegetable compartment of the refrigerator according to the first embodiment of the present invention.

Fig. 22 is a schematic diagram showing a heat dissipation pipe of a refrigerant circuit of a refrigerator in a first embodiment of the present invention.

Fig. 23 is a view showing a flow rate characteristic of an outlet pipe side of a flow path switching three-way valve of a refrigerator according to a first embodiment of the present invention which is not connected to a heat pipe of a vegetable compartment.

Fig. 24 is an explanatory diagram showing a configuration of a flow path switching three-way valve of a refrigerator according to a first embodiment of the present invention.

Fig. 25 is a diagram showing the flow path formation state of the rotating gear in the flow path switching three-way valve of the refrigerator according to the first embodiment of the present invention. Fig. 25 (a) is the 0STEP state of the rotating gear. Fig. 25 (b) is a diagram showing a case where the flow path is closed in the 4STEP state of the rotating gear, and Fig. 25 (c) is a diagram showing a case where the throttle is A in the 36STEP state of the rotating gear. FIG. 25 (d) is a diagram showing a case where the throttle gear B is throttled in the 73STEP state, and FIG. 25 (e) is a diagram showing a case where the throttle gear C is throttled in the 110STEP state, and FIG. 25 (f ) Is a diagram showing a case where the flow path is opened in the 177STEP state of the turning gear, and FIG. 25 (g) is a diagram showing a case where each stage is in the 200STEP state of the turning gear.

Fig. 26 is an explanatory view showing a rotation pad and a valve seat of the flow path switching three-way valve of the refrigerator in the first embodiment of the present invention in a cross section A-A of Fig. 25 (c).

Fig. 27 is a diagram showing the air blowing and return air paths of the cold air to the refrigerating compartment in the refrigerator according to the first embodiment of the present invention, and Fig. 27 (a) shows the cold air to the refrigerating compartment in the left and right longitudinal sections. Fig. 27 (b) is an explanatory diagram showing a cold air blow-out air path to a refrigerating compartment in front and rear longitudinal sections, and Fig. 27 (c) is a diagram showing a front-back longitudinal section in An illustration of the return air path for cold air in the refrigerator.

Fig. 28 is a diagram showing the air blowing and return air paths of the cold air to the ice-making chamber of the refrigerator according to the first embodiment of the present invention, and Fig. 28 (a) shows the ice-making chamber on the left and right longitudinal sections. FIG. 28 (b) is a perspective view showing a state of blowing out of the cold air in the ice making chamber.

FIG. 29 is a diagram showing the air blowing and return air paths of the cold air to the temperature switching chamber of the refrigerator according to the first embodiment of the present invention. FIG. 29 (a) shows the temperature switching chamber on the left and right longitudinal sections. Fig. 29 (b) is an explanatory diagram showing the return air path of the cold air to the temperature switching chamber in a longitudinal section in the front and rear directions.

Fig. 30 is a diagram showing the air blowing and return air paths of the cold air to the freezer in the refrigerator according to the first embodiment of the present invention, and Fig. 30 (a) shows the cold air to the freezer in the left and right longitudinal sections. FIG. 30 (b) is an explanatory diagram showing the blow-out air path and the return air path of the cold air to the freezing compartment in the longitudinal section in the front and rear.

Fig. 31 is a front view showing a rear wall portion of a refrigerator according to a second embodiment of the present invention as viewed from a vegetable room.

Fig. 32 is a front view showing another example of the rear wall portion of the refrigerator according to the second embodiment of the present invention as viewed from the vegetable compartment.

Fig. 33 is a front view showing another example of the rear wall portion of the refrigerator according to the second embodiment of the present invention as viewed from the vegetable compartment.

Hereinafter, embodiments of the present invention will be described based on the drawings.

In addition, in each figure, the same reference numerals are the same or equivalent, which is common throughout the entire specification of this patent.

Furthermore, the morphology of the constituent elements shown throughout the entirety of this patent specification is by way of example only, and is not limited to these descriptions.

First Embodiment

Fig. 1 is a perspective view showing the appearance of a refrigerator 1 according to a first embodiment of the present invention.

As shown in FIG. 1, the refrigerator 1 is arranged from above in the order of the refrigerator compartment 2, the ice making compartment on the left, and the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6 on the right side beside the ice making compartment 3. The storage compartments of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6 are partitioned by partition walls (not shown).

The refrigerator 1 includes a box 19 formed of a rectangular parallelepiped in a longitudinal direction. The cabinet 19 has an upper surface portion, a bottom surface portion, a right surface portion, a left surface portion, a back surface portion, and a door portion of each of the storage compartments of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6.

Fig. 2 is a diagram showing a refrigerant circuit 7 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 2, in the refrigerant circuit 7 of the refrigerator 1, the refrigerant discharged from the compressor 8 is supplied to an air-cooled condenser 9 provided in a machine room (not shown). Then, the refrigerant flowing through the air-cooled condenser 9 flows through the condenser 10 provided inside the urethane of the main body of the refrigerator 1. The refrigerant flowing through the condenser 10 is in front of the refrigerator 1 and circulates through the dew prevention tube 11 surrounding each of the storage compartments including the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6. The refrigerant flowing through the dew condensation preventing tube 11 passes through the dryer 12 and is then supplied to the pressure reducing device 13. The refrigerant system depressurized in the decompression device 13 is supplied to a cooler 14. The refrigerant supplied to the cooler 14 evaporates in the cooler 14 and exchanges heat with the cold air forcedly circulated internally by the blower 15. The cold air generated by the heat exchange of the cooler 14 cools each storage room in the refrigerator 1. The refrigerant that has undergone heat exchange with the cooler 14 passes through the suction pipe, returns to the compressor 8 after the temperature rises while exchanging heat with the pressure reducing device 13.

The cold air of the refrigerator 1 is first supplied to the cooler 14. Next, the cold air forcedly circulated internally by the blower 15 performs heat exchange with the refrigerant in the cooler 14. The cold air generated by the heat exchange of the cooler 14 cools each of the storage compartments in the refrigerator 1, the ice making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6 in the refrigerator 1.

Fig. 3 is an explanatory view showing a vertical cross section in the left-right direction of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 3, each of the temperature sensors 16a, 16b, 16c, and 16d installed in each of the storage compartments of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6 is a detection system. Measure the temperature of the air in each storage room or the temperature of the stored food. The detected temperature information is input to a control board 17 provided above and inside the refrigerator 1. The control board 17 is provided with a microcomputer and electronic components that perform various controls of the refrigerator 1. The control board 17 operates the air volume adjustment devices (dampers) 18a, 18b, and 18c for each storage room in response to the input temperature information. The air volume adjustment devices 18a, 18b, and 18c are electrical components that adjust the opening and closing of the air passage.

Therefore, according to the temperature detected by the temperature sensors 16a, 16b, 16c, and 16d, the cold air circulating in each storage room and the cooler 14 is adjusted by the air volume adjustment devices 18a, 18b, and 18c to store the air The chamber is maintained at a suitable temperature.

FIG. 4 is an explanatory view showing a cross section of a part of a wall portion 20 of a cabinet 19 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 4, the wall portion 20 of the box body 19 is composed of the sheet metal 21 constituting the outer frame, the inner box 22 constituting the wall of each storage room, and the heat insulating material 23 between the sheet metal 21 and the inner box 22. And suppress the intruding heat from the outside.

Here, the heat insulating material 23 and the vacuum heat insulating material 24 are adhered to the outer sheet metal 21, and the amount of heat intrusion can be greatly reduced by making the vacuum heat insulating material 24. The vacuum heat insulating material 24 is a rectangular plate shape arranged in each wall part 20.

The heat insulating material 23 is mainly a urethane foam material in addition to the vacuum heat insulating material 24. The heat-insulating material 23 is provided in the space enclosed with the urethane foam material, and various internal components such as the reinforcing member for correcting the deformation of the refrigerator 1, the above-mentioned refrigerant circuit element, and the electric wiring element are provided. Foam material holds these internal components.

FIG. 5 is an explanatory view showing a cross section of a part of the wall portion 20 on the left side surface of the cabinet 19 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 5, the heat insulation material 23 of the wall portion 20 on the left side of the cabinet 19 of the refrigerator 1 is in a space sealed with a urethane foam material, which is within the above range. In addition to the built-in members, the supporting members 25 that receive the rail structure of the frame structure constituting the door of the pull-out storage room are also arranged as built-in members, and these built-in members are fixed with urethane foam. The heat-insulating material 23 is formed in a fixed shape to receive a rail structure of a frame structure constituting a door of a pull-out storage room.

Fig. 6 is an explanatory view showing another example of a cross section of a part of a wall portion 20 of a cabinet 19 of the refrigerator 1 according to the first embodiment of the present invention. Fig. 7 is an explanatory view showing another example of a cross section of a part of a wall portion 20 of a cabinet 19 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 6, the vacuum insulation material 24 that can also be placed on the insulation material 23 is placed at the center of the outer wall of the sheet metal 21 and the inner surface of the inner box 22 using a spacer 26 depending on the installation position. As shown in FIG. 7, the vacuum insulation material 24 that can also be placed on the insulation material 23 is adhered to the wall surface of the inner box 22 depending on the installation position. In this way, the vacuum insulation material 24 that can also be placed on the insulation material 23 is placed by any of the methods shown in FIGS. 4, 6, and 7. However, the vacuum heat insulating material 24 is provided so as not to interfere with the above-mentioned built-in members.

The covering area of the vacuum heat insulation material 24 of the heat insulation material 23 disposed in the cabinet 19 of the refrigerator 1 is ensured to include at least 40% of the entire surface area including the door surface area of each storage compartment. In addition, the foam density of the urethane foam material enclosed around these vacuum insulation materials 24 is ensured to be 60 kg / cm ³ or more. In addition, the flexural modulus of the urethane foam is guaranteed to be 15.0 MPa or more. This ensures the strength of the cabinet 19 of the refrigerator 1.

In this way, the distance of the heat insulation thickness between the outer contour of the refrigerator 1 and the inner wall of the inner box 22 is narrowed by the heat insulating material 23 disposed in the case 19 of the refrigerator 1 by the vacuum heat insulating material 24. Into. Thereby, the internal volume of the refrigerator 1 can be increased.

As shown in FIG. 3, the refrigerator 1 considers the ease of access to each of the storage compartments of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6, and the internal volume of each storage compartment. For the balance, the distance L from the floor to the floor of the refrigerator compartment is set to be between 954 mm and 994 mm.

As shown in FIG. 3, the cooler 14 is housed in a cooler chamber 27 formed on the rear surface of the ice-making chamber 3, the temperature switching chamber 4, and the vegetable chamber 5. The lower end of the cooler 14 is tied in the cooler chamber 27 and is located below the floor surface F of the vegetable compartment 5.

Since the lower end of the cooler 14 is located below the floor surface F of the vegetable compartment 5, a larger space than that above the cooler 14 can be secured. Thereby, the degree of freedom of the size of the blower 15 which is arranged in this space and blows cold air to each of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6 becomes large. Further, above the blower 15, there are provided air volume adjustment devices 18a, 18b, and 18c that are held by the foam insulation material to the air paths to the storage rooms.

Fig. 8 is a front and rear longitudinal cross-sectional view showing the periphery of the lower portion of the refrigerator 1 according to the first embodiment of the present invention.

Fig. 9 is a left and right vertical cross-sectional view showing the periphery of the lower portion of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 8, a return air path 28 for circulating air from the refrigerator compartment 2 is formed on the right side of the cooler 14. As shown in FIG. 9, the return air path 29 of the temperature switching chamber 4 and the blowout air path 30 to the vegetable compartment 5 are formed in front of the return air path 28 of the air circulation from the refrigerator compartment 2.

As shown in FIG. 9, in front of the cooler 14 and the above-mentioned air paths 29 and 30, a rear wall portion 31 is formed as a heat-insulating wall with a space in the vegetable compartment 5.

Fig. 10 is a left and right vertical cross-sectional view showing the periphery of the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 10, the top wall portion 32 of the vegetable compartment 5 becomes a partition wall between the ice-making compartment 3 and the temperature switching compartment 4. The top wall portion 32 is a heat-insulating wall and suppresses heat transfer.

The top wall portion 32 is formed by an injection molding material, and the inside is formed by a vacuum insulation material 33 and a urethane foam material 34. The vacuum heat insulating material 33 is provided on the sides of the ice-making chamber 3 and the temperature switching chamber 4 which are set to a lower temperature than the vegetable chamber 5. The vacuum insulation material 33 is a rectangular plate.

The thickness of the urethane foam material 34 is 7 mm or more in consideration of fluidity during manufacturing and manufacturing unevenness.

As shown in FIG. 10, the bottom wall portion 35 of the vegetable compartment 5 becomes a partition wall with the freezing compartment 6. The bottom wall portion 35 is a heat insulation wall and suppresses heat transfer.

The bottom wall portion 35 is the same as the top wall portion 32. The outer wall is made of injection molding material, and the inside is formed by the vacuum insulation material 36 and the urethane foam material 37. The vacuum insulation material 36 is provided on the freezer compartment 6 side which is set to a lower temperature than the vegetable compartment 5. The vacuum insulation material 36 is a rectangular plate.

The thickness of the urethane foam material 37 is 7 mm or more in consideration of fluidity during manufacturing and manufacturing unevenness.

The vacuum insulation materials 33 and 36 disposed on the top wall portion 32 and the bottom wall portion 35 of the vegetable compartment 5 are the urethane injection steps in the manufacturing process of the refrigerator 1, and the urethane foam materials 34 and 37 are used for the package. Therefore, deterioration of the vacuum heat insulating materials 33 and 36 is suppressed.

Fig. 11 is an explanatory view showing a longitudinal section of another example of the top wall portion 32 in the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 11, the top wall portion 32 may be provided with the vacuum insulation material 33 in the middle of the outer wall surface of the partition wall by ensuring the viscosity or flow path width of the urethane foam material 34. The urethane foam material 34 is enclosed in the whole to suppress further deterioration of the vacuum insulation material 33.

Fig. 12 is an explanatory view showing a longitudinal section of another example of the top wall portion 32 in the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 12, the ceiling wall portion 32 may be provided with the vacuum heat insulating material 33 on the side of the vegetable compartment 5 on the outer wall surface of the partition wall. In this case, the vacuum insulation material 33 can increase the coverage of the inner wall surface of the vegetable compartment 5 to suppress the amount of heat intrusion.

As shown in FIG. 10, a rear wall portion 31 partitioning the vegetable room 5 and the cooler room 27 is formed on the rear surface of the vegetable room 5. The back wall portion 31 is a heat insulation wall, and the inner structure is constituted by the heat insulation wall exterior 38, the vacuum heat insulation material 39, and the foam heat insulation material 40 provided so as to enclose the vacuum heat insulation material 39. That is, the back wall portion 31 of the vegetable compartment 5 is a rectangular plate-shaped vacuum heat insulating material 39 disposed between the inner wall of the vegetable compartment 5 and the cooler 14.

The thickness of the foam heat insulating material 40 of the back wall portion 31 is based on the thickness at the limit of formability. In addition, if there is an additional function, a required heat insulating thickness is set. When PS-FO is used as the material of the foam insulation material 40, for example, when the foaming magnification is 40 times, the approximate thickness is configured to be at least 5 mm or more.

The foam heat insulation material 40 in the back wall portion 31 is provided in the air passage 41 for blowing air to the freezing compartment 6. The front and rear air passages 41 are arranged from the rear to form a foam heat insulator 40, a vacuum heat insulation material 39, a foam heat insulation material 40 having a structure including a cooler 14, an outer wall 42 of an insulation wall, and a blowout air passage 41. The order of the outer wall 38 of the inner wall of the vegetable compartment 5. As shown in Fig. 8, the above-mentioned air path 41 to the freezing compartment 6 is arranged on the front projection plane of the cooler 14. That is, the rear wall portion 31 of the vegetable compartment 5 is in a wider range than the projection surface in front of the cooler 14 and the air path 41. The cooler 14 and the air path 41 and the vegetable compartment to the freezer compartment 6 are connected with the vacuum insulation material 39. 5 separated.

As shown in FIG. 10, the air volume adjusting device 18 c for the vegetable room 5 is held by the foam heat insulating material 40 having the air passage 41 on the rear wall portion 31 of the vegetable room 5.

In addition, the air volume adjustment devices 18a, 18b, and 18c for each storage room may not be provided in the rear wall portion 31 of the vegetable room 5, but may be accommodated in the rear wall portion of another room above the vegetable room 5. In this way, it is not necessary to provide extra space behind the vegetable compartment 5, but a large-capacity vegetable compartment 5 can be provided.

FIG. 13 is a diagram showing another example of the left and right vertical cross sections of the periphery of the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 13, the vacuum heat insulation material 39 of the back wall portion 31 of the vegetable room 5 may be adhered to the inside of the heat insulation wall outside 42 of the cooler 14 to ensure the effect of the vacuum heat insulation material 39. wall. That is, the vacuum heat insulating material 39 of the back wall portion 31 of the vegetable room 5 is provided on the cooler 14 side in the back wall portion 31.

In this case, the size of the height direction of the vacuum heat insulating material 39 becomes slightly smaller depending on the position or the size of the outlet of the cold air discharged from the blower 15. Moreover, since the vacuum heat insulating material 39 is not covered with the foam heat insulating material 40, there is also a possibility that deterioration of the vacuum heat insulating material 39 may be promoted.

Fig. 14 is a diagram showing another example of the left and right vertical cross sections of the periphery of the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 14, the back wall portion 31 of the vegetable compartment 5 may be provided in a vacuum to protect the vacuum insulation material 39 from the defects shown in FIG. 13 and protect the vacuum insulation material 39. Between the heat-insulating material 39 and the inner wall of the heat-insulating wall outer portion 42 on the side of the cooler 14.

FIG. 15 is a front view showing the rear wall portion 31 of the refrigerator 1 according to the first embodiment of the present invention as viewed from the inside of the vegetable compartment 5.

As shown in FIG. 15, the rear wall portion 31 of the vegetable compartment 5 is a rectangular plate-shaped vacuum heat insulating material 39 disposed between the inner wall of the vegetable compartment 5 and the cooler 14.

The size of the flat portion of the vacuum heat insulating material 39 is larger than the projected area in front of the cooler 14. In addition, the air path 41 to the freezer compartment 6 is arranged on the front projection surface of the cooler 14. Therefore, as shown in FIG. 10, the rear wall portion 31 of the vegetable compartment 5 is in a wider range than the projection surface in front of the cooler 14 and the air path 41. The cooler 14 and The air path 41 to the freezer compartment 6 is partitioned. Thereby, the one-dimensional heat transfer amount toward the inside of the vegetable room 5 passing through the back wall portion 31 of the vegetable room 5 is suppressed to the maximum.

As shown in FIG. 15, the cold air outlet 44 to the vegetable compartment 5 is formed on the upper right side inside the rear wall portion 31 of the vegetable compartment 5. The cold air blow-out port 44 does not overlap the front projection plane of a rectangular plate-shaped vacuum heat insulating material 39 arranged on the rear wall portion 31 of the vegetable room 5, and is located further outside than the front projection plane.

The cold air outlet 44 is supplied to the cooler 14 by the air blower 15 arranged above the cooler 14 and supplied to the cooler 14 through the air volume adjustment device 18c for the vegetable room held by the foam insulation material 40 above the cooler chamber 27. Air conditioning.

The cold air outlet 44 may be formed on an inner wall of a wall portion other than the rear wall portion 31 of the vegetable compartment 5.

The cold air return opening 45 from the vegetable compartment 5 is a cold air outlet 44 to the inner wall of the back wall portion 31 of the vegetable compartment 5 and is formed in the lower left portion on the diagonal. The cold air return opening 45 does not overlap the front projection surface of a rectangular plate-shaped vacuum heat insulating material 39 disposed on the rear wall portion 31 of the vegetable room 5, and is located further outside than the front projection surface.

The cold air blown from the cold air blow-out port 44 is discharged from the cold air return port 45 at the corner of the vegetable wall 5 opposite to the cold air blow-out port 44 and guided to the cooler 14 and then passes through the cooler. 14 while being circulated in a cooled manner.

The cold air return opening 45 may be formed on an inner wall of a wall portion other than the rear wall portion 31 of the vegetable compartment 5.

As shown in FIG. 15, a rectangular plate-shaped vacuum insulation material 39 disposed on the back wall portion 31 of the vegetable room 5 is provided so as to avoid the vertical projection area of the cold air outlet 44 and the cold air return opening 45. , And the vertical and horizontal sides are substantially parallel to the vertical and horizontal directions.

In addition, different from the structure shown in FIG. 15, a rectangular plate-shaped vacuum insulation material 39 may be arranged on the back wall portion 31 of the vegetable room 5 so as to avoid the cold air outlet 44 and cold air. The horizontal projection area of the return opening 45, and the vertical and horizontal sides are substantially parallel to the vertical direction and the horizontal direction.

In addition, a rectangular plate-shaped vacuum heat insulating material 39 disposed on the back wall portion 31 of the vegetable compartment 5 may be provided in a vertical and horizontal direction if it is disposed so as not to block the cold air outlet 44 and the cold air return port 45. The sides are tilted vertically and horizontally.

FIG. 16 is a front view showing another example of the rear wall portion 31 of the refrigerator 1 according to the first embodiment of the present invention as viewed from the vegetable compartment 5. FIG. 17 is a front view showing another example of the rear wall portion 31 of the refrigerator 1 according to the first embodiment of the present invention as viewed from the vegetable compartment 5.

As shown in FIG. 16, the cold air outlet 44 may be formed on the upper right side of the inner wall of the rear wall portion 31 of the vegetable compartment 5. At this time, the cold air return opening 45 is formed on the lower right side of the inner wall of the rear wall portion 31 of the vegetable compartment 5.

In addition, as shown in FIG. 17, the cold air outlet 44 may be formed on the upper left side of the inner wall of the rear wall portion 31 of the vegetable compartment 5. At this time, the cold air return opening 45 is formed in the lower left side of the inner wall of the rear wall portion 31 of the vegetable compartment 5.

That is, in the configurations shown in FIGS. 16 and 17, the cold air outlet 44 and the cold air return port 45 are located in the same range in the vertical direction on the inner wall of the vegetable room 5. In addition, the cold air outlet 44 and the cold air return port 45 may be located in the same range in the horizontal direction on the inner wall of the vegetable compartment 5.

When the structure shown in FIGS. 16 and 17 is adopted, the size of the flat portion of the vacuum insulation material 39 in the back wall portion 31 of the vegetable room 5 becomes larger. Therefore, the vacuum heat insulating material 39 is also arranged in a portion constituting another air path, and the coverage rate of the vegetable room 5 by the vacuum heat insulating material 39 increases, and the heat insulation of the vegetable room 5 is strengthened.

Fig. 18 is a schematic view showing vacuum insulation materials 24, 33, 36, and 39 in a wall portion 20 partitioning a part of the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention. Fig. 19 is a schematic view of vacuum insulation materials 24, 33, 36, and 39 viewed from the back side of a wall portion 20 that partitions a part of the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

The refrigerator 1 includes: an ice-making compartment 3 above; a temperature switching compartment 4; and a vegetable compartment 5, which are set to a higher temperature than the freezing compartment 6 below, and store things such as vegetables and food. As shown in FIGS. 18 and 19, the vegetable room 5 is a rectangular plate-shaped vacuum insulation material 24, 33, 36, and 39 disposed on the right side wall portion, the left side wall portion, and the left side of the vegetable room 5, respectively. Each of the top wall portion 32, the bottom wall portion 35, the back wall portion 31, and the wall portions 20 of the door wall portion.

Here, the right side wall portion of the vegetable compartment 5 is a rectangular plate-shaped vacuum insulation 20 arranged on the right side wall portion 20 of the entire cabinet 19 of the refrigerator 1 including other storage rooms above and below the vegetable compartment 5. Material 24. A left side wall portion of the vegetable compartment 5 is a rectangular plate-shaped vacuum insulation material 24 arranged on a left side wall portion 20 of the entire cabinet 19 of the refrigerator 1 including other storage rooms above and below the vegetable compartment 5.

On the other hand, the ceiling wall portion 32 of the vegetable compartment 5 is provided with a rectangular plate-shaped vacuum heat insulating material 33. The bottom wall portion 35 of the vegetable compartment 5 is provided with a rectangular plate-shaped vacuum heat insulating material 36. The back wall portion 31 of the vegetable compartment 5 is provided with a rectangular plate-shaped vacuum heat insulating material 39. The door wall portion of the vegetable room 5 is provided with a rectangular plate-shaped vacuum heat insulating material 24.

With this configuration, all six faces of the vegetable compartment 5 composed of a substantially rectangular parallelepiped or a cube are covered with the vacuum insulation materials 24, 33, 36, and 39. Therefore, the coverage rate of the vacuum insulation materials 24, 33, 36, and 39 with respect to the total area of the wall surface of the vegetable room 5 becomes 80% or more. Thereby, the heat transfer from the vegetable compartment 5 to another storage compartment can be suppressed. Alternatively, the hot and cold movement from the other storage room and the cooler room 27 to the vegetable room 5 can be suppressed. In addition, in the right wall portion, the left wall portion, and the door wall portion, the amount of heat intrusion into the vegetable compartment 5 from the outside can be suppressed.

Fig. 20 is a schematic diagram showing a heat-preserving heater 46 provided in the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

When configured as shown in FIGS. 18 and 19 described above, the average temperature of the vegetable compartment 5 tends to decrease. Therefore, as shown in FIG. 20, the vegetable room 5 may be provided with a temperature-retaining heater 46 using an electric resistance to maintain the indoor temperature of the vegetable room 5 when necessary.

The heat preservation heater 46 of the vegetable room 5 is installed at any position of the bottom surface, the back surface, or the left and right sides of the vegetable room 5 with an arbitrary capacity of 3W or more and 10W or less. Especially, the indoor temperature of the vegetable room 5 is relatively low. . The thermal insulation heater 46 is energized according to the energization rate (on time / reference time) based on the time based on the outside air temperature and the indoor temperature of the vegetable room 5.

Fig. 21 is a schematic view showing a heat radiation pipe 47 provided in the vegetable compartment 5 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 21, the vegetable compartment 5 may be provided with a urethane foam insulation material on the left and right side walls of the cabinet 19 in addition to the heat preservation heater 46. Radiator 47. In addition, the vegetable compartment 5 may be provided on the heat-insulating material side inside the outer contour of the wall between the bottom wall portions 35, and a heat radiating pipe 47 may be provided to maintain the temperature of the vegetable compartment 5. The heat radiating pipe 47 circulates the refrigerant used in the cooler 14 and radiates heat into the vegetable compartment 5.

The amount of heat radiation from the heat pipe 47 to the vegetable compartment 5 is a unit heat quantity of 1.5W / m or more and 3.0W / m or less. The heat pipe 47 is provided in a length of 5m or more, and the total heat can be ensured to be about 4.5W . In this way, in the vegetable compartment 5 having an internal volume of about 90 L, a temperature-raising effect at a temperature of about 2 ° C. or higher and 3 ° C. or lower can be obtained.

In addition, in the case where the capacity of the vegetable compartment 5 is large, the length of the heat dissipation tube 47 may be appropriately adjusted to cope with it.

Fig. 22 is a schematic view showing a heat radiation pipe 47 of the refrigerant circuit 7 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 22, in the refrigerant circuit 7, the heat radiating tube 47 is connected to the dryer 12 via the dew condensation preventing tube 11 on the surface of the refrigerator 1, and then connected to the downstream side of the flow path switching three-way valve 48 to switch the flow path. The three-way valve 48 is switched.

Among the two outlet pipes 49 and 50 of the flow path switching three-way valve 48, one outlet pipe 49 is connected to one side of the two capillary tubes 51. The capillary 51 connected to the outlet pipe 49 can be changed in pressure reduction amount. The remaining outlet pipe 50 is connected to the above-mentioned heat radiation pipe 47 to the vegetable compartment 5.

When configured in this way, the heat radiating tube 47 dissipates the heat of the refrigerant into the vegetable compartment 5 and increases the load on the air side. However, because it acts in the direction of increasing the condensation ability of the refrigerant on the refrigeration cycle side, the efficiency of the refrigeration cycle is improved. .

In other words, when the heat is radiated into the vegetable compartment 5 by the heat-preserving heater 46, the power consumption has a large effect on the increase in the load on the air side and the input of the heater. Therefore, in a case where heat is radiated to the vegetable compartment 5 through the heat radiation pipe 47, it becomes a comparative advantage in power consumption.

As shown in FIG. 22, on the downstream side of the flow path switching three-way valve 48, the other outlet pipe 49 which is not connected to the heat pipe 47 of the vegetable compartment 5 is simulated by an electronically controlled expansion valve, and the discharge can be adjusted in multiple stages. The refrigerant flow is better. This can further reduce power consumption.

FIG. 23 is a diagram showing the flow rate characteristics of the outlet-pipe 49 side of the flow path switching three-way valve 48 of the refrigerator 1 according to the first embodiment of the present invention which is not connected to the heat-radiating pipe 47 of the vegetable compartment 5.

As shown in FIG. 23, the flow rate characteristics on the outlet pipe 49 side of the other side of the flow path switching three-way valve 48 that is not connected to the heat pipe 47 of the vegetable compartment 5 is controlled in five stages. The five-stage flow control is switching between fully closed, throttled flow A, throttled flow B, throttled flow C, and fully open.

Fig. 24 is an explanatory diagram showing a configuration of a flow path switching three-way valve 48 of the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 24, the flow path switching three-way valve 48 is roughly divided into two parts, a low-voltage 4-phase stepping motor 52 and a valve body 53. The main body of the valve body 53 includes a magnetized rotor 54, a sun gear 55, a rotation gear 56, a rotation pad 57, a valve seat 58, an outer box 59, and a floor 60.

The flow path switching three-way valve 48 rotates the magnetized rotor 54 by unipolar driving the low-voltage 4-phase stepping motor 52 with 1-2 phases of excitation. The magnetized rotor 54 is directly connected to the sun gear 55. When the magnetized rotor 54 rotates, the sun gear 55 rotates in the same direction as the magnetized rotor 54 by only the same amount.

Fig. 25 is a diagram showing the flow path formation state of the turning gear 56 in the flow path switching three-way valve 48 of the refrigerator 1 according to the first embodiment of the present invention, and Fig. 25 (a) is a diagram showing the turning gear Fig. 25 (0) STEP state diagram, Fig. 25 (b) is a diagram showing a case where the flow path is closed in the 4STEP state of the turning gear 56, and Fig. 25 (c) is a diagram showing a throttle A in the 36STEP state of the turning gear 56 FIG. 25 (d) is a diagram showing a case where the step B is throttled at 73 in the rotation gear 56, and FIG. 25 (e) is a case where the step C is turned at the 110 step in the rotation gear 56. FIG. 25 (f) is a diagram showing a case where the flow path is opened in the 177 STEP state of the turning gear 56 and FIG. 25 (g) is a diagram showing the case where each step is in the 200 STEP state of the turning gear.

As shown in FIG. 25, the sun gear 55 and the rotation gear 56 are directly engaged. Therefore, the rotation pad 57 fixed to the rotation gear 56 is rotated based on the central axis provided on the valve seat 58 as a reference, and is driven by the rotation of the center gear 55.

In the rotating pad 57, holes 61, 62, and 63 having different inner diameters are provided at three positions. At any of the three openings 61, 62, and 63, the rotation of the rotating pad is used. When it overlaps with the outlet opening 64 of the valve seat 58, a predetermined flow flows out.

As shown in FIG. 25 (b), when the 4STEP state of the turning gear 56 becomes the flow path closed, the flow rate of the flow path switching three-way valve 48 becomes the fully closed state of FIG. 23. As shown in FIG. 25 (c), when the 36 STEP state of the rotating gear 56 becomes the throttle A, the flow rate of the flow path switching three-way valve 48 becomes the flow rate A state of FIG. 23. As shown in FIG. 25 (d), when the 73STEP state of the rotating gear 56 becomes the throttle B, the flow rate of the flow path switching three-way valve 48 becomes the flow B state of FIG. 23. As shown in FIG. 25 (e), when the 110STEP state of the turning gear 56 is the throttle C, the flow rate of the flow path switching three-way valve 48 is the flow C state of FIG. 23. As shown in FIG. 25 (f), when the flow path is opened in the 177STEP state of the turning gear 56, the flow rate of the flow path switching three-way valve 48 becomes the fully open state in FIG.23.

Fig. 26 is an explanatory view showing the rotation pad 57 and the valve seat 58 of the flow path switching three-way valve 48 of the refrigerator 1 according to the first embodiment of the present invention in the A-A section of Fig. 25 (c).

As shown in FIG. 26, the shape of the periphery of the opening 61 formed in the rotating pad 57 is deep-formed in sections. Since the openings 61, 62, and 63 formed in the rotating pad 57 are very small, the forming system is difficult. Therefore, the surrounding shapes of the orifices 61, 62, 63 are due to the need to make the depths of the orifices 61, 62, 63 shallow, and the hysteresis in the reverse drive (CCW) of the stepping motor 52 caused by the backlash connected to the gears. The relationship between the removal of the influence of the aluminum alloy and the removal of the unevenness of the chamfered shape formed in the outlet opening 64 of the valve seat 58 are formed in sections as described above.

When configured in this manner, the influence of the hysteresis in the reverse driving (CCW) of the stepping motor 52 can be removed, the flow rate is stable, and the stability during molding is also increased, which can suppress the risk of product modification.

The above-mentioned flow path switching three-way valve 48 is switched to an optimal refrigerant flow rate according to the load of the refrigerator 1. Compared with the flow path switching three-way valve conventionally used, the range of flow control is increased. In addition, the flow path switching three-way valve 48 reduces the number of capillaries required for the purpose of flow adjustment, and can also reduce the cost.

In addition, when the heat preservation heater 46 using a resistance is used for the heat preservation of the vegetable compartment 5, as the flow path switching valve, it is also possible to use a two-way valve in which only the flow-controllable side of the two outlets of the flow path switching valve remains.

Fig. 27 is a diagram showing the cold air blowing air passage 65 and return air passage 28 of the refrigerator 1 to the refrigerating compartment 2 in the refrigerator 1 according to the first embodiment of the present invention, and Fig. 27 (a) shows the left and right longitudinal cross sections 27 (b) is an explanatory view showing the cold air blow-out air path 65 and refrigerating room 2 to the refrigerator compartment 2 in the front and rear longitudinal cross-sections. c) An explanatory view showing a return air path 28 for cold air to the refrigerator compartment 2 in a longitudinal section in front and back.

As shown in Figs. 27 (a) and 27 (b), the cooling air outlet 65 of the refrigerating compartment 2 is connected in series 65, and the air is discharged from the blower 15 provided above the cooler 14 and separated by vegetables. The air passage in the back wall portion 31 of the compartment 5 and the cooler compartment 27, the air passage in the refrigerating compartment 2 in the foam insulation material facing above the cooler compartment 27, partitioning the refrigerating compartment 2, the ice-making compartment 3, and the temperature The air passage in the foam heat insulation material in the wall between the switching chambers 4 and the air passage formed by the foam heat insulation material provided in the back surface side of the refrigerator compartment 2 are comprised.

In addition, the air volume adjustment device 18 a that adjusts the amount of cooling air supply to the refrigerating room 2 adjusts the amount of cooling air supply to the refrigerating room 2 in the middle of the cooling air blow-out air passage 65 to the refrigerating room 2. The air volume adjustment device 18a may be installed in any one of the above-mentioned air paths.

In addition, the cold air blowing outlet in the refrigerating compartment 2 is at least one storage rack in the refrigerating compartment 2, and at least one or more is formed, and the blowout amount is adjusted to the cold air distribution in the rack and the cold air distribution between the racks to be within 2 ° C .

As shown in FIG. 27 (a) and FIG. 27 (c), the return air path 28 of the cold air from the refrigerating compartment 2 is provided by the cooler 14 using a foam insulation material on the right side to perform the required heat insulation. . The discharge port of the return air path 28 for the cold air from the refrigerating compartment 2 is connected to a drip tray 66 in the cooler compartment 27 that receives dissolved water from the bottom right side of the cooler 14 when defrosting.

As shown in FIG. 27 (a), in the return air path 28 from the refrigerating compartment 2, when the required heat insulation is not ensured, a return air path 28 is provided to avoid frost in the air path. The blocked heater 67 is sufficient. The heater 67 is in a range larger than the projected size above and below the cooler 14 and is provided at any position in the return air path 28 in the air path length direction and generates heat when necessary. The heater 67 may be provided, for example, along the flow direction of the return cold air around the joint portion of the return air path 28 and the drip pan 66 in a range of 100 mm up and down.

Fig. 28 is a diagram showing the cold air blowing air passage 68 and return air passage 69 of the refrigerator 1 to the ice making chamber 3 in the refrigerator 1 according to the first embodiment of the present invention, and Fig. 28 (a) shows the left and right longitudinal sections. The explanatory diagram of the cold air blow-out air path 68 and the return air path 69 to the ice-making chamber 3, (b) of FIG. 28 is a perspective view showing the cold air blow-out state in the ice-making chamber 3.

As shown in FIG. 28 (a), the cold air blowing air path 68 to the ice-making chamber 3 is connected: the air is discharged from the air blower 15 provided above the cooler 14 and faces the upper side of the cooler chamber 27 after the cold air is discharged. The air path in the ice-making chamber 3 in the heat material and the air path formed by the foam heat insulation material provided in the back surface side of the ice-making chamber 3 are comprised.

In addition, an unillustrated air volume adjustment device that adjusts the amount of cold air supply to the ice-making chamber 3 adjusts the amount of cold air supply to the ice-making chamber 3 midway to the air-cooling air outlet 68 of the ice-making chamber 3. The air volume adjustment device may be installed in any one of the above-mentioned air paths.

As shown in FIG. 28 (b), the cold air blown out from the cold air blow-out port 70 at an arbitrary position on the rear surface of the ice-making chamber 3 flows into the ice-making mechanism 71.

As shown in FIG. 28 (a), the return air flow path 69 of the cold air from the ice-making chamber 3 is located closer to the ice-making chamber than the center of the refrigerator 1 within the full width of the cooler 14 from the front of the cooler 14 3 sides and within the projection width of the back of the ice making chamber 3.

The return air duct 69 from the ice making chamber 3 is formed by a cold air return opening 72 arbitrarily provided in the rear wall portion of the ice making chamber 3, behind the outer contour of the surface of the ice making chamber 3, and between the ice making chamber 3 and the ice making chamber 3. The outer contour of the surface consists of a part of the foam insulation material. The discharge port of the return air passage 69 from the ice making chamber 3 converges near the cold air return port from the ice making chamber 3. In order to avoid the confluent pressure loss at the confluence area, the cold air return opening from the freezing compartment 6 near the cooling air discharge port of the ice making compartment 3 has a range in the width direction above the width direction of the return air passage 69 from the ice making compartment 3 .

In addition, the return air duct 69 from the ice-making chamber 3 may be located above the cold air return port from the freezing chamber 6 and return directly to the cooler chamber 27.

FIG. 29 is a diagram showing the cold air blowing air path 73 and the return air path 29 of the refrigerator 1 to the temperature switching chamber 4 in the refrigerator 1 according to the first embodiment of the present invention, and FIG. 29 (a) is shown in the left and right longitudinal sections FIG. 29 (b) is an explanatory diagram showing the cooling air blowout air path 29 and the return air path 29 to the temperature switching chamber 4 in a longitudinal longitudinal section.

As shown in FIG. 29 (a), the cold air blowing air path 73 to the temperature switching room 4 is connected: the air is discharged from the air blower 15 provided above the cooler 14 and the foam partition is directed above the cooler room 27. The air path of the temperature switching chamber 4 in the thermal material and the air path formed by the foam heat insulation material provided in the back surface side of the temperature switching chamber 4 are comprised.

In addition, the air volume adjustment device 18b that adjusts the amount of cooling air supply to the temperature switching room 4 adjusts the amount of cooling air supply to the temperature switching room 4 midway to the cooling air blow-out air path 73 to the temperature switching room 4. The air volume adjustment device 18b may be installed in any one of the above-mentioned air paths.

As shown in Figs. 29 (a) and 29 (b), the return air path 29 from the temperature switching chamber 4 is arbitrarily provided by a cold air return port provided in the rear wall portion of the temperature switching chamber 4 to switch the temperature. The rear side of the outer surface of the surface of the chamber 4 and a part of the foam heat insulation material adjacent to the outer surface of the surface of the temperature switching chamber 4 are configured. The discharge port of the return air path 29 from the temperature switching chamber 4 is provided on the right side of the return air path from the freezing chamber 6.

Fig. 30 is a diagram showing the cold air blowing air passage 41 and return air passage 74 to the freezing compartment 6 of the refrigerator according to the first embodiment of the present invention, and Fig. 30 (a) shows the left and right longitudinal sections showing the refrigerating 30 (b) is an explanatory diagram showing the cold air blow-out air path 41 and the return air path 74 to the freezing chamber 6 in the longitudinal section in the front and rear.

As shown in FIGS. 30 (a) and 30 (b), the cooling air blowing air path 41 to the freezing compartment 6 is connected, and the cooling air is discharged from the blower 15 provided above the cooler 14 to partition the vegetable room. 5 and the air passage in the rear wall portion 31 of the vegetable compartment 5 of the cooler compartment 27 and the air passage provided in the bottom wall portion 35 of the vegetable compartment 5 between the vegetable compartment 5 and the freezing compartment 6.

The cold air that has passed through the cold air blow-out air path 41 to the freezing chamber 6 is guided to the stacked storage compartments in the freezing chamber 6 by a guide provided on the inner top surface of the freezing chamber 6 and cooled. Storage in the freezer compartment 6.

As shown in FIGS. 30 (a) and 30 (b), the return air path 74 from the freezer compartment 6 is discharged from the freezer compartment 6 through a guide provided on the top surface of the inside of the freezer compartment 6, and the cold air is discharged from the freezer compartment 6 The air duct formed by the range within the width of the cooler 14 provided behind the bottom wall portion 35 of the vegetable compartment 5 between the vegetable compartment 5 and the freezing compartment 6 is formed. The discharge outlet of the return air path 74 from the freezing compartment 6 is the same as the return air path 28 from the refrigerating compartment 2 and the drip tray 66 receiving the dissolved water during the defrosting from the lower right side of the cooler 14 in the cooler chamber 27. connection.

A guide (not shown) provided on the inner top surface of the freezer compartment 6 has both the guide part for the blow-out side into the freezer compartment 6 and the guide part from the return side in the freezer compartment 6 and is more forward. When facing the refrigerator 1, it is arrange | positioned in front and back. Specifically, the guide portion on the blow-out side into the freezer compartment 6 is disposed on the front side of the refrigerator 1. The guide from the return side in the freezer compartment 6 is arranged on the rear side of the refrigerator 1.

According to the first embodiment, the refrigerator 1 includes a vegetable compartment 5 which is set to a higher temperature than other surrounding compartments and stores a foodstuff such as vegetables. The vegetable compartment 5 is a rectangular plate-shaped vacuum heat insulating material 24, 33, 36, 39, which is arranged in each wall part 20 which partitions the six surfaces of the vegetable compartment 5.

According to this configuration, the covering area of the vegetable compartment 5 by the vacuum insulation materials 24, 33, 36, and 39 is increased as much as possible. In addition, the vacuum heat insulating materials 24, 33, 36, and 39 are rectangular, and the notches or holes are not provided in the vacuum heat insulating materials 24, 33, 36, and 39, and a simple structure can ensure the required heat insulation performance. Therefore, manufacturing costs can be Reduced, assembly is simple, and manufacturing efficiency is good.

According to the first embodiment, the refrigerator 1 is arranged from above in the order of the refrigerating compartment 2, the ice-making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezing compartment 6.

According to this configuration, the ice-making chamber 3 and the temperature switching chamber 4 that are lower in temperature than the vegetable compartment 5 and store stored items such as foods are arranged above the vegetable compartment 5. The freezer compartment 6 which is cooler than the vegetable compartment 5 and stores stored items such as food is arranged below the vegetable compartment 5. Therefore, hot and cold inflow occurs in the vegetable compartment 5 and there is a possibility that the vegetable compartment 5 will be overcooled. However, a piece of rectangular plate-shaped vacuum heat insulating material 24, 33, 36, 39 is disposed on each wall portion 20 partitioning the vegetable room 5. Thereby, it is possible to prevent hot and cold inflow from the surroundings of the vegetable room 5 into the vegetable room 5, and the vegetable room 5 is not excessively cold. On the other hand, it is possible to prevent heat radiation from the inside of the vegetable compartment 5 to the surroundings of the refrigerator 1 which is the outside of the vegetable compartment 5, and the inside of the vegetable compartment 5 can be efficiently maintained at a set temperature.

In addition, the vegetable compartment 5 having a high frequency of use can be disposed at a position approximately at the height of the waist of the user, and the convenience of the user is improved.

According to the first embodiment, a side wall portion of the vegetable compartment 5 is connected to two side wall portions of the entire casing 19 of the refrigerator 1 including the other compartments, and a rectangular plate-shaped vacuum heat insulating material 24 is disposed respectively. The top surface wall portion 32, the bottom wall portion 35, the back wall portion 31, and the door wall portion of the vegetable room 5 are each provided with a rectangular plate-shaped plate-shaped vacuum heat insulating material 24, 33, 36, 39.

According to this configuration, a rectangular plate-shaped vacuum heat insulating material 24 is arranged on the side wall portion of the vegetable compartment 5 on the two side wall portions of the entire cabinet 19 including the refrigerator 1 of the other room, so as to efficiently perform the same. The vacuum insulation material used in the refrigerator 1 is disposed. Therefore, the number of sheets of the vacuum insulation material can be reduced, and the manufacturing cost can be reduced. The use can be reduced, the assembly system is simple, and the manufacturing efficiency is improved.

According to the first embodiment, the cooler 14 is included behind the vegetable room 5, and the rear wall portion 31 of the vegetable room 5 is a rectangular plate-shaped vacuum barrier disposed between the inner wall of the vegetable room 5 and the cooler 14. Thermal material 39.

According to this configuration, it is possible to prevent hot and cold from the cooler 14 from flowing into the vegetable compartment 5. This can prevent the temperature of the cooler 14 from increasing. In addition, it is possible to prevent the temperature of the back wall portion 31 of the vegetable compartment 5 from decreasing. In addition, defects such as dew condensation and frost in the vegetable compartment 5 can be prevented.

According to the first embodiment, the rear wall portion 31 of the vegetable compartment 5 is provided between the inner wall of the vegetable compartment 5 and the cooler 14, and includes an air path 41 for cooling air that is communicated from the cooler 14 to the freezing compartment 6. The air path 41 is arranged on the front projection surface of the cooler 14.

According to this configuration, the air passage 41 through which the cold air having a low temperature flows can be concentrated together with the cooler 14, and the thermal efficiency can be improved.

According to the first embodiment, a rectangular plate-shaped vacuum heat insulating material 39 disposed between the back wall portion 31 of the vegetable compartment 5 between the inner wall of the vegetable compartment 5 and the cooler 14 has a ratio from the vegetable compartment 5 A wider range of the front projection surface of the cooler 14 and the air path 41 separates the sizes of the cooler 14 and the air path 41.

According to this configuration, the cold heat of the cooler 14 and the blowing path 41 can be prevented from flowing into the vegetable compartment 5 by only a rectangular plate-shaped vacuum insulation material 39.

According to the first embodiment, the refrigerator 1 includes a vegetable compartment 5 which is set to a higher temperature than other surrounding compartments and stores a foodstuff such as vegetables. The refrigerator 1 includes a cooler 14 provided behind the vegetable compartment 5. The refrigerator 1 includes a rear wall portion 31 provided between the inner wall of the vegetable compartment 5 and the cooler 14. The refrigerator 1 includes a vacuum provided on the cooler 14 side of the rear wall portion 31 Insulation material 39.

According to this configuration, it is possible to prevent hot and cold from the cooler 14 from flowing into the vegetable compartment 5. This can prevent the temperature of the cooler 14 from increasing. In addition, it is possible to prevent the temperature of the back wall portion 31 of the vegetable compartment 5 from decreasing. In addition, defects such as dew condensation and frost in the vegetable compartment 5 can be prevented.

According to the first embodiment, the refrigerator 1 has the vacuum heat insulating materials 33 and 36 disposed on the top wall portion 32 and the bottom wall portion 35 that separate the vegetable compartment 5 from other surrounding rooms.

According to this configuration, the covering area of the vegetable compartment 5 by the vacuum insulation materials 33 and 36 is increased as much as possible. In addition, the notch or hole is not provided in the vacuum heat insulating materials 33 and 36, and a simple structure can ensure the required heat insulating performance. In addition, it is possible to prevent cold and heat from flowing into the vegetable room 5 from around the vegetable room 5, and the vegetable room 5 does not become too cold.

The vacuum insulation materials 24, 33, 36, and 39 are rectangular plates.

According to this structure, the vacuum insulation materials 24, 33, 36, and 39 are rectangular. No gaps or holes are set in the vacuum insulation materials 24, 33, 36, and 39. The simple structure can ensure the required heat insulation performance. . Therefore, manufacturing costs can be reduced, assembly is simple, and manufacturing efficiency is good.

According to the first embodiment, a cold air outlet 44 and a cold air return opening 45 are formed on the inner wall of the rear wall portion 31 of the vegetable compartment 5. A rectangular plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable room 5 does not overlap the rear projection surface of the cold air outlet 44 and the cold air return opening 45.

According to this configuration, the cold air blow-out port 44 and the cold air return port 45 can be formed at positions not separated by a rectangular plate-shaped vacuum insulation material 39. Therefore, in order to form the cold air outlet 44 and the cold air return port 45, it is not necessary to The heat material 39 is drilled, a special process is provided in which the notch is provided in the vacuum heat insulation material 39, or a plurality of vacuum heat insulation materials are used. Therefore, manufacturing costs can be reduced, assembly is simple, and manufacturing efficiency is good.

According to the first embodiment, a rectangular plate-shaped vacuum insulation material 39 disposed on the back wall portion 31 of the vegetable room 5 is provided to avoid the vertical projection area of the cold air outlet 44 and the cold air return opening 45. Or horizontal projection area, and the vertical and horizontal sides are substantially parallel to the vertical and horizontal directions.

According to this configuration, the shape of a rectangular plate-shaped vacuum insulation material 39 and the rectangular parallelepiped of the refrigerator 1 can prevent a manufacturing operator from arranging the position of the vacuum insulation material 39 by mistake, the assembly system is simple, and the manufacturing efficiency is high.

According to the first embodiment, the cold air blow-out port 44 and the cold air return port 45 are located at corners on the opposite corners of the inner wall of the vegetable compartment 5, respectively.

According to this configuration, the cold air blow-out port 44 and the cold air return port 45 can be formed at positions not separated by a rectangular plate-shaped vacuum insulation material 39. In addition, the distance between the cold air blow-out port 44 and the cold air return port 45 can be changed far, and the cold air returned to the cold air return port 45 after being blown out from the cold air blow-out port 44 circulates throughout the vegetable compartment 5, and the thermal efficiency can be improved.

According to the first embodiment, the cold air outlet 44 and the cold air return port 45 are located on the inner wall of the vegetable compartment 5 in the same range in the vertical direction or the horizontal direction.

According to this configuration, the cold air blow-out port 44 and the cold air return port 45 can be formed at positions not separated by a rectangular plate-shaped vacuum insulation material 39. Further, the cold air outlet 44 and the cold air return port 45 are close to each other, and the area of the rear wall portion 31 of the vegetable compartment 5 in which a rectangular plate-shaped vacuum heat insulating material 39 is arranged can be enlarged.

According to the first embodiment, the refrigerator 1 includes an electrical element that adjusts opening and closing of a plurality of air passages. The electric element is stored in a rear wall portion of another chamber above the vegetable chamber 5.

According to this configuration, it is not necessary to provide extra space behind the vegetable room 5, but a large-capacity vegetable room 5 can be provided.

According to the first embodiment, the vegetable compartment 5 is provided with a heat-preserving heater 46 in any one of the wall portions 20 partitioning the vegetable compartment 5.

According to this configuration, if the inside of the vegetable compartment 5 is too cold, the inside of the vegetable compartment 5 is heated by the heat-preserving heater 46.

According to the first embodiment, the vegetable compartment 5 includes a heat dissipation tube 47 for radiating heat from a refrigerant used in the cooler 14 in any one of the wall portions 20 partitioning the vegetable compartment 5.

According to this configuration, in a case where the vegetable compartment 5 is overcooled, the refrigerant in the vegetable compartment 5 is heated by the refrigerant flowing through the heat radiating tube 47 to dissipate heat.

According to the first embodiment, the storage room is the vegetable room 5. The other rooms around the storage room are the freezing room 6, the ice making room 3, the quenching room, the storage room with a lower temperature than the temperature zone of the vegetable room 5, or the temperature zone which can be switched to a lower temperature than the temperature zone of the vegetable room 5.的 温度 开关 室 4。 The temperature switching chamber 4.

According to this configuration, hot and cold inflow occurs in the vegetable compartment 5, and the vegetable compartment 5 may be too cold. However, a rectangular plate-shaped vacuum heat insulating material 24, 33, 36, 39 is disposed on each wall portion 20 that partitions the vegetable compartment 5. Thereby, it is possible to prevent hot and cold from flowing into the vegetable room 5 from around the vegetable room 5, and the vegetable room 5 is not excessively cold. On the other hand, heat can be prevented from being radiated from the inside of the vegetable compartment 5 to the surroundings of the refrigerator 1 outside the vegetable compartment 5, and the inside of the vegetable compartment 5 can be maintained at a set temperature with high heat efficiency.

Second embodiment

The refrigerator 1 according to the second embodiment is configured such that returning cold airflow from the refrigerator compartment 2 enters the vegetable compartment 5 compared to the refrigerator 1 according to the first embodiment. Therefore, the return air path of the refrigerant from the refrigerating compartment 2 and the return air path from the vegetable compartment 5 are configured to converge on the lower side of the back surface of the vegetable compartment 5, and the return air path from the freezer compartment 6 is separated from left to right. Return to cooler chamber 27.

In the second embodiment, this characteristic portion will be described. The other configurations are the same as those of the first embodiment, so the description is omitted.

FIG. 31 is a front view showing the rear wall portion 31 of the refrigerator 1 according to the second embodiment of the present invention as viewed from the inside of the vegetable compartment 5.

As shown in FIG. 31, in the vegetable compartment 5, a refrigerating return opening 75 is formed on the right upper side of the inner wall of the rear wall portion 31 of the vegetable compartment 5. The refrigerating return opening 75 does not overlap with the front projection surface of a rectangular plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable compartment 5, and is located outside the front projection surface.

In the vegetable room 5, a refrigerating return air passage 76 is formed on the back surface of the inner wall of the back wall portion 31 of the vegetable room 5. The refrigerating return air passage 76 is formed from the upper right side of the inner wall of the back wall portion 31 of the vegetable compartment 5 forming the refrigerating return opening 75 to the central air outlet 44 of the inner wall of the back wall portion 31.

The cold air blow-out port 44 is formed at the lower center portion of the inner wall of the back wall portion 31 that is formed in the left and right sides. The cold air outlet 44 does not overlap with the front projection surface of a rectangular plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable room 5, and is located outside the front projection surface.

In addition, since the cold air outlet 44 is formed behind the inner wall of the back wall portion 31, it can also be plugged by a rectangular plate-shaped vacuum insulation material 39 arranged in the back wall portion 31 of the vegetable room 5. rear.

In addition, the cold air blowing port 44 is a cold air amount adjustment mechanism that can adjust the opening amount from the left and right sides as shown by the arrow in the figure, and the opening amount adjustment mechanism may be provided.

The return air path of the cold air (not shown) from the refrigerating compartment 2 is provided so that necessary heat insulation can be performed using a foam insulation material on the right side of the cooler 14. The return air path of the cold air from the refrigerating compartment 2 is guided in the rear projection plane of the top surface wall portion 32 of the vegetable room 5 between the temperature switching room 4 and the vegetable room 5 to the lower side of the top surface wall portion 32 to guide. The part is formed on the surface of the outline. The return airflow path of the cold air from the refrigerating compartment 2 is connected to an air path formed in the bottom wall part 35 of the vegetable compartment 5 between the vegetable compartment 5 and the freezing compartment 6 at about the center portion of the lower part of the back surface of the vegetable compartment 5.

The cold air sent by the blower 15 provided above the cooler 14 and the cold air generated by the cooler 14 are passed to the refrigerating compartment 2 through the air volume adjustment device 18a held by the foam insulation material above the cooler chamber 27. Be supplied. The cold air supplied to the refrigerating return opening 75 is supplied to a refrigerating return air passage 76 formed in the rear wall portion 31 of the vegetable compartment 5, and then supplied to the vegetable compartment 5 from the cold air outlet 44 in the vegetable compartment 5. . The subsequent cold air is supplied to a cold air return opening 45 (not shown) in the vegetable compartment 5.

FIG. 32 is a front view showing another example of the rear wall portion 31 of the refrigerator 1 according to the second embodiment of the present invention, as viewed from the vegetable compartment 5.

The refrigerating return air passage 76 provided in the rear wall portion 31 of the vegetable room 5 has no heat insulation function between the vegetable room 5 and the inside of the vegetable room 5, and is separated by an inner wall surface formed by injection molding.

Therefore, as shown in Fig. 32, in order to adjust the temperature in the vegetable compartment 5, a plurality of holes 77 may be provided on the inner wall surface that separates the refrigerated return air passage 76 from the inside of the vegetable compartment 5.

FIG. 33 is a front view showing another example of the rear wall portion 31 of the refrigerator 1 according to the second embodiment of the present invention as viewed from the vegetable compartment 5.

As shown in FIG. 33, in the same manner as the configuration shown in FIG. 32, in order to adjust the temperature in the vegetable compartment 5, a plurality of holes 77 may be provided in the interior partitioning the refrigerated return air passage 76 and the inside of the vegetable compartment 5. Wall surface.

Further, a slider 78 may be provided so as to be able to freely open and close a plurality of holes 77 provided in the inner wall surface.

In such a configuration, the user slides the slider 78 as shown by the arrow in the figure to adjust the number of the closed holes 77, whereby the user can arbitrarily adjust the temperature in the vegetable compartment 5.

In addition, in the second embodiment, since the temperature can be adjusted in the vegetable compartment 5, a flow rate adjusting device for adjusting the amount of cooling air supplied to the vegetable compartment 5 may not be provided in the air path of the rear portion of the refrigerator 1.

According to the second embodiment, the cold air blow-out port 44 cools the air from the surroundings of the vegetable compartment 5 and cools it with the cooler 14 from the other compartment where the vegetable compartment 5 stores the foodstuffs or the like. The low-temperature cold air is blown into the vegetable compartment 5.

According to this configuration, it is not necessary to provide an air path or an electrical element for adjusting the opening and closing of the air path only for the vegetable room 5. Therefore, manufacturing costs can be reduced, assembly is simple, and manufacturing efficiency is good.

According to the second embodiment, the vegetable room 5 has a cold air volume adjustment mechanism that adjusts the amount of cold air blown out from the cold air outlet 44.

According to this configuration, the temperature in the vegetable compartment 5 can be adjusted, and, for example, food items such as vegetables can be appropriately stored.

In addition, the first and second embodiments of the present invention may be combined and applied to other parts.

Further, in the first and second embodiments of the present invention, the vacuum heat insulating materials 24, 33, 36, and 39 have a rectangular plate shape. However, without being limited to this, the vacuum insulation materials 24, 33, 36, and 39 may be formed by using the corners as an R shape, a triangular shape, a polygonal shape, an oval shape, a circular shape, or other various shapes. .

Claims (27)

A refrigerator includes a storage room set at a higher temperature than other surrounding rooms and storing storage items; the storage room is provided with vacuum insulation materials on each wall portion that separates the storage room; The back includes a cooler; the back wall of the storage compartment is provided with the vacuum insulation material between the inner wall of the storage compartment and the cooler; the back wall of the storage compartment includes an air path for cold air, the wind The path is between the inner wall of the storage room and the cooler, and the cooler communicates with a part of the room; the air path is arranged on the front projection surface of the cooler. For example, the refrigerator of claim 1, the refrigerator is arranged from above in the order of the refrigerator compartment, the ice making compartment and the temperature switching compartment, the vegetable compartment, and the freezing compartment; the storage compartment is the vegetable compartment. For a refrigerator as claimed in item 1 or 2 of the patent application, wherein the side wall portion of the storage compartment is arranged on the two side wall portions of the entire cabinet of the refrigerator containing other compartments, respectively, the vacuum insulation material; The vacuum insulation material is placed on the top wall portion, bottom wall portion, back wall portion, and door wall portion, respectively. A refrigerator as claimed in item 1 of the patent application, wherein the vacuum insulation material disposed between the inner wall of the storage compartment and the cooler on the back wall portion of the storage compartment has a The wider projection area in front of the cooler and the air path separates the size of the cooler and the air path. A refrigerator includes: a storage room set at a higher temperature than other surrounding rooms and stores storage items; a cooler is provided behind the storage room; a back wall portion is provided in the storage room Between the inner wall of the inner wall and the cooler; and a vacuum insulation material, which is provided on the cooler side of the back wall portion; an inner wall of the storage chamber on the back wall portion of the storage chamber forms a cold air outlet And the cold air return port; the vacuum insulation material disposed on the back wall of the storage room does not overlap with the cold air outlet and the rear projection surface of the cold air return port. A refrigerator as claimed in item 5 of the patent application, in which the vacuum insulation material is disposed on the wall portion separating the storage compartment and other surrounding compartments. For example, in the refrigerator of claim 1 or 2, the vacuum insulation material is a rectangular plate. For example, in the refrigerator of claim 5 or 6, the vacuum insulation material is a rectangular plate. A refrigerator as claimed in item 1 or 2 of the patent application, wherein a cold air blow-out port and a cold air return port are formed in the inner wall of the storage room at the back wall part of the storage room; The vacuum insulation material does not overlap the rear projection surface of the cold air outlet and the cold air return. A refrigerator as claimed in item 9 of the patent application, wherein the vacuum insulation material disposed on the back wall of the storage compartment is arranged to avoid the vertical projection area or horizontal projection of the cold air outlet and the cold air return Area, and the vertical and horizontal sides are substantially parallel to the vertical and horizontal directions. A refrigerator as claimed in item 5 of the patent application, wherein the vacuum insulation material disposed on the back wall of the storage compartment is arranged to avoid the vertical projection area or horizontal projection of the cold air outlet and the cold air return Area, and the vertical and horizontal sides are substantially parallel to the vertical and horizontal directions. For example, in the refrigerator of claim 9, the cold air outlet and the cold air return are respectively located at diagonal corners of the inner wall of the storage room. For example, in the refrigerator of claim 5, the cold air outlet and the cold air return are respectively located at diagonal corners of the inner wall of the storage room. For example, in the refrigerator of claim 9, the cold air outlet and the cold air return are located in the same range in the vertical direction or horizontal direction of the inner wall of the storage room. For example, in the refrigerator of claim 5, the cold air outlet and the cold air return are located in the same range in the vertical or horizontal direction of the inner wall of the storage room. For example, the refrigerator according to item 1 or 4 of the patent application includes an electrical element that adjusts the opening and closing of a plurality of air paths; the electrical element is housed in the back wall of another room above the storage room. For example, the refrigerator of claim 5 or 6 includes an electric element that adjusts the opening and closing of a plurality of air paths; the electric element is housed in the back wall of another room above the storage room. A refrigerator as claimed in item 1 or 2 of the patent application, wherein the storage compartment has a heat preservation heater on any wall that partitions the storage compartment. A refrigerator as claimed in item 5 or 6 of the patent application, wherein the storage compartment has a heat preservation heater on any wall that partitions the storage compartment. A refrigerator as claimed in item 1 of the patent application, wherein the storage compartment has a heat dissipation tube that circulates and radiates the cooling medium used in the cooler on any wall that partitions the storage compartment. As in the refrigerator of claim 5 or 6, the storage compartment has a heat dissipation tube that circulates and radiates the cooling medium used in the cooler on any wall that partitions the storage compartment. A refrigerator as claimed in item 9 of the patent application, wherein the cool air outlet is to cool the cold air returned from other rooms that are cooler than the storage room and store storage items around the storage room, or cooled by the cooler The cold air of low temperature is blown out into the storage room. A refrigerator as claimed in item 5 of the patent application, wherein the cool air outlet is to cool the cool air that is returned from another room that is cooler than the storage room and stores storage items around the storage room, or cooled by the cooler The cold air of low temperature is blown out into the storage room. For example, in the refrigerator of claim 22, the storage compartment has a cold air volume adjustment mechanism that adjusts the amount of cold air blown from the cold air outlet. A refrigerator as claimed in item 23 of the patent scope, wherein the storage compartment is provided with a cold air volume adjustment mechanism for adjusting the amount of cold air blown out from the cold air outlet. For example, the refrigerator of patent application item 1 or 2, wherein the storage room is a vegetable room; the other room is a freezing room, an ice making room, a quenching room, a storage room with a temperature lower than that of the vegetable room, or It is switched to a temperature switching chamber at a temperature zone lower than the temperature zone of the vegetable compartment. For example, the refrigerator of claim 5 or 6, wherein the storage compartment is a vegetable compartment; the other compartment is a freezing compartment, an ice making compartment, a quenching compartment, a storage compartment with a temperature lower than the temperature of the vegetable compartment, or It is switched to a temperature switching chamber at a temperature zone lower than the temperature zone of the vegetable compartment.