JPWO2018131157A1 - refrigerator - Google Patents

Abstract

The refrigerator is provided with a storage room that is set at a higher temperature than the other surrounding rooms and stores stored items, and the storage room is provided with a vacuum heat insulating material on each wall section that partitions the storage room.

Description

  The present invention relates to a refrigerator in which a vacuum heat insulating material is arranged on each wall section partitioning a storage room.

  In the conventional refrigerator, the refrigerator compartment, the ice making compartment, the freezer compartment, and the vegetable compartment are laid out in this order from the top. In the case of this layout, the vegetable room is arranged at the lowest position of the refrigerator. For this reason, in order to take out vegetables from a vegetable room, the user had to fold down a knee and bend down or bend a waist.

  Here, when comparing the door opening / closing times or door opening times in the vegetable room and freezer compartment, although there are individual differences, the vegetable room has more door opening / closing times and the door opening time is also large. long. Therefore, it is expected that the convenience of the entire refrigerator is improved by switching the positions of the vegetable compartment and the freezer compartment and arranging the vegetable compartment above the freezer compartment.

However, the conventional refrigerator has a configuration in which a plurality of chambers in the freezing temperature zone are gathered in one place in order to improve the thermal efficiency first.
Secondly, the conventional refrigerator has a configuration in which a cooler is arranged on the back of the freezer compartment, and troubles such as dew formation and frost formation are unlikely to occur without providing a special heat insulation component between the freezer compartment and the cooler. It has become.

On the other hand, in order to improve user convenience, it is conceivable that the refrigerators are laid out in the order of the refrigerator compartment, the ice making compartment, the vegetable compartment, and the freezer compartment from the top. This refrigerator is arranged by alternately switching the room of the refrigeration temperature zone (plus temperature) and the freezing temperature zone (minus temperature) from the top.
For this reason, the refrigerator with such a layout is first inferior in thermal efficiency to a conventional refrigerator. Moreover, in order to ensure required heat insulation performance, the thickness of the wall part of each chamber becomes large, and the space which can accommodate food becomes small compared with the case where the external shape of a refrigerator is the same.
In addition, in the refrigerator having such a layout, the cooler is secondly arranged on the back of the vegetable room, and the wall portion separating the vegetable room and the cooler has higher heat insulation performance than conventional. There is a need. In order to improve the heat insulation performance, the thickness of the wall may be increased. However, the food storage space is sacrificed as described above.
Therefore, as a conventional heat insulating component, a foamed polystyrene molded article that has good workability and is convenient for attachment and removal or transportability has been used. However, by using a vacuum heat insulating material having higher heat insulating performance (small heat transfer coefficient) as the heat insulating component, both heat insulating performance and ensuring food storage space can be achieved.

JP 2012-242072 A

In the case where a vacuum heat insulating material is disposed between the vegetable room and the cooler, an air path is required to send cold air cooled by the cooler to the vegetable room. Patent Document 1 describes that “the vacuum heat insulating material is provided on the front surface other than the inflow port and the outflow port among the partition walls constituting the inner wall surface” (see claim 10 of Patent Document 1). Thus, there is a method in which everything except the inlet and the outlet is covered with a vacuum heat insulating material.
However, in that case, it is necessary to make a hole in the vacuum heat insulating material, provide a notch in the vacuum heat insulating material, or use a plurality of vacuum heat insulating materials. Therefore, the manufacturing cost increases.

  An object of the present invention is to provide a refrigerator that can reduce the manufacturing cost, that is easy to assemble, and that has high manufacturing efficiency.

  The refrigerator according to the present invention includes a storage room that is set to a temperature higher than that of the other surrounding rooms and stores a stored product, and the storage room is provided with a vacuum heat insulating material on each wall section that partitions the storage room. Is.

  According to the refrigerator according to the present invention, the storage room is provided with a vacuum heat insulating material on each wall section that partitions the storage room. For this reason, the covering area of the storage chamber by the vacuum heat insulating material increases as much as possible. In addition, the vacuum heat insulating material has a shape such as a rectangle that can be easily manufactured, and the vacuum heat insulating material is not provided with a notch or a hole, so that necessary heat insulating performance can be ensured with a simple configuration. Therefore, the manufacturing cost can be reduced, the assembly is simple, and the manufacturing efficiency is good.

It is an external appearance perspective view which shows the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the refrigerant circuit of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the longitudinal cross-section of the left-right direction of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the one part cross section of the wall part of the box of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows a partial cross section of the wall part of the left side surface part among the boxes of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the other example of the one part cross section of the wall part of the box body of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the other example of the one part cross section of the wall part of the box body of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the front-back longitudinal cross-section of the lower periphery vicinity of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the left-right longitudinal cross section of the lower periphery periphery of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the left-right longitudinal cross-section of the vegetable compartment periphery of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the longitudinal cross-section of the other example of the ceiling wall part in the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the longitudinal cross-section of the other example of the ceiling wall part in the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the other example of the left-right longitudinal cross-section around the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the other example of the left-right longitudinal cross-section around the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a front view which shows the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a front view which shows the other example of the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a front view which shows the other example of the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the vacuum heat insulating material in the one part wall part which divides the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the vacuum heat insulating material in the one part wall part which divides the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention seeing from a back surface. It is a schematic diagram which shows the heat retention heater installed in the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the thermal radiation pipe installed in the vegetable compartment of the refrigerator which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the thermal radiation pipe in the refrigerant circuit of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the flow volume characteristic by the side of the outlet pipe which is not connected to the heat radiating pipe to the vegetable compartment in the flow-path switching three-way valve of the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the structure of the flow-path switching three-way valve of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows collectively the flow-path formation state with respect to STEP of the rotation gear in the flow-path switching three-way valve of the refrigerator which concerns on Embodiment 1 of this invention, and Fig.25 (a) is a figure which shows the 0 STEP state of a rotation gear. 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 aperture A is set in the 36STEP state of the rotating gear. FIG. 25D is a diagram showing a case where the aperture is B in the 73 STEP state of the rotating gear, FIG. 25E is a diagram showing a case where the aperture is C in the 110 STEP state of the rotating gear, and FIG. It is a figure which shows the case where a flow path is opened in the 177 STEP state of a rotating gear, and FIG.25 (g) is a figure which shows the case where it becomes per stage in the 200 STEP state of a rotating gear. It is explanatory drawing which shows the rotary pad and valve seat in the flow-path switching three-way valve of the refrigerator which concerns on Embodiment 1 of this invention in the AA cross section of FIG.25 (c). It is a figure which shows collectively the blowing air path and return air path of the cold air to the refrigerating room of the refrigerator which concerns on Embodiment 1 of this invention, and Fig.27 (a) is an air blowing air path and return air of the cold air to the refrigerating room. FIG. 27 (b) is an explanatory view showing the air flow path of the cool air to the refrigerator compartment in the longitudinal longitudinal section, and FIG. 27 (c) is an illustration of the cold air from the refrigerator compartment. It is explanatory drawing which shows a return air path in the front-back longitudinal cross section. It is a figure which shows collectively the blowing air path and return air path of the cold air to the ice making room of the refrigerator which concerns on Embodiment 1 of this invention, and Fig.28 (a) is the air blowing air path and return air of the cold air to the ice making room. It is explanatory drawing which shows a path | route in the left-right longitudinal cross section, and FIG.28 (b) is a perspective view which shows the blowing state of the cool air in an ice making chamber. It is a figure which shows collectively the blowing air path and return air path of the cold air to the temperature switching room of the refrigerator which concern on Embodiment 1 of this invention, and Fig.29 (a) shows the blowing air path of the cold air to a temperature switching room, and FIG. 29B is an explanatory diagram showing the return air path in the left and right vertical cross section, and FIG. 29B is an explanatory diagram showing the cool air return air path from the temperature switching chamber in the front and rear vertical section. It is a figure which shows collectively the blowing air path and return air path of the cold air to the freezer compartment of the refrigerator which concerns on Embodiment 1 of this invention, and Fig.30 (a) is the air blowing air path and return air of the cold air to the freezer room It is explanatory drawing which shows a path | route in the left-right longitudinal cross section, and FIG.30 (b) is explanatory drawing which shows the blowing air path and return air path of the cool air to a freezer compartment in the front-back longitudinal cross section. It is a front view which shows the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the back wall part seen from the vegetable compartment of the refrigerator which concerns on Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, in each figure, what attached | subjected the same code | symbol is the same or it corresponds, and this is common in the whole text of a specification.
Furthermore, the forms of the constituent elements shown in the entire specification are merely examples and are not limited to these descriptions.

Embodiment 1 FIG.
FIG. 1 is an external perspective view showing a refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 1, the refrigerator 1 is laid out in order of a refrigerator compartment 2, a left ice making room 3, a right temperature switching room 4 next to the ice making room 3, a vegetable room 5, and a freezer room 6. Yes. The refrigerator compartment 2, the ice making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezer compartment 6 are partitioned by a partition (not shown).
The refrigerator 1 is provided with a box 19 that is configured by a vertically long rectangular parallelepiped. The box 19 includes a top surface portion, a bottom surface portion, a right side surface portion, a left side surface portion, a back surface portion, and door portions of the storage rooms of the refrigerator compartment 2, the ice making chamber 3, the temperature switching chamber 4, the vegetable compartment 5, and the freezer compartment 6. Have.

FIG. 2 is a diagram showing the refrigerant circuit 7 of the refrigerator 1 according to Embodiment 1 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 installed in a machine room (not shown). And the refrigerant | coolant which distribute | circulated the air-cooled condenser 9 distribute | circulates the condenser 10 installed in the urethane inside of the main body of the refrigerator 1. FIG. The refrigerant that has flowed through the condenser 10 is dew-preventing pipes that are stretched around the storage compartments of the refrigerator compartment 2, the ice making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezer compartment 6 in front of the refrigerator 1. 11 is distributed. The refrigerant flowing through the dew prevention pipe 11 is condensed by the condensation process. The refrigerant flowing through the dew prevention pipe 11 is supplied to the decompression device 13 after passing through the dryer 12. The refrigerant decompressed by the decompression device 13 is supplied to one cooler 14. The refrigerant supplied to the cooler 14 evaporates in the cooler 14 and exchanges heat with cold air that is forcibly internally circulated by the blower 15. The cold air generated by heat exchange of the cooler 14 cools each storage room in the refrigerator 1. The refrigerant after heat exchange in the cooler 14 rises in temperature while exchanging heat with the decompression device 13 through the suction pipe and returns to the compressor 8.
The cold air in the refrigerator 1 is first supplied to the cooler 14. The cool air that is forcibly internally circulated by the blower 15 exchanges heat with the refrigerant in the cooler 14. The cold air generated by heat exchange of the cooler 14 cools the storage rooms in the refrigerator room 1, the ice making room 3, the temperature switching room 4, the vegetable room 5, and the freezer room 6 in the refrigerator 1.

FIG. 3 is an explanatory view showing a longitudinal section in the left-right direction of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 3, each temperature sensor 16a, 16b, 16c, 16d installed in each storage room of the refrigerator compartment 2, the ice making room 3, the temperature switching room 4, the vegetable room 5, and the freezing room 6 Detect indoor air temperature or stored food temperature. The detected temperature information is input to the control board 17 installed on the upper rear side inside the refrigerator 1. On the control board 17, a microcomputer and various electronic components that perform various controls of the refrigerator 1 are arranged. The control board 17 operates the air volume adjusting devices (dampers) 18a, 18b, and 18c for each storage room according to the input temperature information. The air volume adjusting devices 18a, 18b, and 18c are electric components that adjust opening and closing of the air passage.
As a result, the cool air circulating through each storage room and the cooler 14 is adjusted in air volume by the air volume adjusting devices 18a, 18b, and 18c according to the temperature detected by the temperature sensors 16a, 16b, 16c, and 16d. Keep the storage room at an appropriate temperature.

FIG. 4 is an explanatory diagram showing a partial cross section of the wall portion 20 of the box 19 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 4, the wall portion 20 of the box 19 includes a sheet metal 21 constituting the outer shell, an inner box 22 constituting each storage chamber wall, and a heat insulating material 23 between the sheet metal 21 and the inner box 22. The amount of heat entering from the outside is suppressed.
Here, a vacuum heat insulating material 24 is affixed to the outer sheet metal 21 to the heat insulating material 23 so that the amount of heat penetration can be greatly reduced by the vacuum heat insulating material 24. The vacuum heat insulating material 24 is a single rectangular plate disposed in each wall portion 20.

  Further, the heat insulating material 23 mainly uses a urethane foam material in addition to the vacuum heat insulating material 24. The heat insulating material 23 arranges various internal members such as a reinforcing member that corrects distortion of the refrigerator 1, the above-described refrigerant circuit component, and electrical wiring component in a space that encloses the urethane foam material. It is fixed with urethane foam.

FIG. 5 is an explanatory diagram showing a partial cross section of the wall portion 20 of the left side surface portion of the box body 19 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 5, the heat insulating material 23 of the wall portion 20 on the left side surface portion of the box 19 of the refrigerator 1 is a drawer-type storage chamber in addition to the above-described internal member in a space that encloses the urethane foam material. The support 25 of the rail structure which receives the frame structure which comprises the door of this is also arrange | positioned as an inscribed member, and these inscribed members are being fixed with the urethane foam material. Moreover, this heat insulating material 23 is formed in the fixed shape of the rail structure which receives the frame structure which comprises the door of a drawer-type storage chamber.

FIG. 6 is an explanatory diagram illustrating another example of a partial cross section of the wall portion 20 of the box 19 of the refrigerator 1 according to the first embodiment of the present invention. FIG. 7 is an explanatory diagram illustrating another example of a partial cross section of the wall portion 20 of the box 19 of the refrigerator 1 according to the first embodiment of the present invention.
As shown in FIG. 6, the vacuum heat insulating material 24 disposed on the heat insulating material 23 may be disposed using a spacer 26 at an intermediate position between the outer sheet metal 21 and the inner box 22 depending on the installation location. As shown in FIG. 7, the vacuum heat insulating material 24 disposed on the heat insulating material 23 may be attached to the wall surface of the inner box 22 depending on the installation location. Thus, the vacuum heat insulating material 24 disposed on the heat insulating material 23 may be disposed by any of the methods shown in FIGS. 4, 6, and 7. However, the vacuum heat insulating material 24 is installed so as not to interfere with the internal member described above.

The covering area of the vacuum heat insulating material 24 arranged on the heat insulating material 23 of the box 19 of the refrigerator 1 ensures 40% or more of the entire outer surface area including the door surface area of each storage chamber. Moreover, the foaming density of the urethane foam enclosed around these vacuum heat insulating materials 24 ensures 60 kg / cm < ³ > or more. And the bending elastic modulus of a urethane foam material ensures 15.0 Mpa or more. Thereby, the intensity | strength of the box 19 of the refrigerator 1 is ensured.
Thus, the vacuum heat insulating material 24 is disposed on the heat insulating material 23 of the box 19 of the refrigerator 1, whereby the distance that is the heat insulating thickness between the outer shell of the refrigerator 1 and the inner wall of the inner box 22 is reduced. Thereby, the internal volume of the refrigerator 1 can be increased.

  As shown in FIG. 3, the refrigerator 1 includes a refrigerator compartment 2, an ice making compartment 3, a temperature switching compartment 4, a vegetable compartment 5, and a freezer compartment 6 with easy access to the storage compartments, and an internal volume balance of each compartment. In consideration of the above, the distance L from the floor surface to the refrigerator compartment floor surface is set between 954 mm and 994 mm.

As shown in FIG. 3, the cooler 14 is accommodated in a cooler chamber 27 formed on the back 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 located below the floor F of the vegetable compartment 5 in the cooler compartment 27.
Since the lower end of the cooler 14 is located below the floor F of the vegetable compartment 5, a larger space can be secured above the cooler 14. Thereby, the freedom degree of the size of the air blower 15 which arrange | positions in this space and blows cold air to each storage room of the refrigerator compartment 2, the ice making room 3, the temperature switching room 4, the vegetable compartment 5, and the freezer compartment 6 becomes large. Also, above the blower 15, air volume adjusting devices 18a, 18b, and 18c to the air passages that are held by the foamed heat insulating material and directed toward the respective storage chambers are installed.

FIG. 8 is a view showing a longitudinal longitudinal section around the lower part of the refrigerator 1 according to Embodiment 1 of the present invention. FIG. 9 is a view showing a left and right longitudinal section around the lower part of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 8, a return air passage 28 for circulating air from the refrigerator compartment 2 is formed on the right side surface of the cooler 14. As shown in FIG. 9, a return air passage 29 of the temperature switching chamber 4 and a blow-off air passage 30 to the vegetable compartment 5 are formed in front of the return air passage 28 of the air circulation from the refrigerator compartment 2.
As shown in FIG. 9, a back wall portion 31 that is a heat insulating wall with the space in the vegetable compartment 5 is formed in front of the cooler 14 and the above-described air paths 29 and 30.

FIG. 10 is a view showing a left and right vertical cross section around the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 10, the ceiling wall portion 32 of the vegetable room 5 is a partition between the ice making room 3 and the temperature switching room 4. The ceiling wall part 32 is a heat insulating wall, and heat transfer is suppressed.
The ceiling wall portion 32 has an outer shape made of an injection molding material, and the inside is constituted by a vacuum heat insulating material 33 and a urethane foam material 34. The vacuum heat insulating material 33 is installed on the ice making chamber 3 and the temperature switching chamber 4 side which are set at a lower temperature than the vegetable chamber 5. The vacuum heat insulating material 33 is a single rectangular plate.
The thickness of the urethane foam 34 is ensured to be 7 mm or more in consideration of fluidity and manufacturing variation during manufacturing.

As shown in FIG. 10, the bottom wall portion 35 of the vegetable compartment 5 is a partition between the freezer compartment 6. The bottom wall portion 35 is a heat insulating wall, and heat transfer is suppressed.
As with the ceiling wall portion 32, the bottom wall portion 35 is configured by an injection molding material, and the inside is configured by a vacuum heat insulating material 36 and a urethane foam material 37. The vacuum heat insulating material 36 is installed on the freezer compartment 6 side that is set at a lower temperature than the vegetable compartment 5. The vacuum heat insulating material 36 is a single rectangular plate.
The urethane foam material 37 has a thickness of 7 mm or more in consideration of fluidity and manufacturing variation during manufacturing.

  The vacuum heat insulating materials 33 and 36 disposed on the ceiling wall portion 32 and the bottom wall portion 35 of the vegetable room 5 are vacuum-filled by wrapping with the urethane foam materials 34 and 37 in the urethane injection step during the manufacturing process of the refrigerator 1. Suppression of deterioration of the heat insulating materials 33 and 36 is achieved.

FIG. 11 is an explanatory view showing a longitudinal section of another example of the ceiling wall portion 32 in the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 11, the ceiling wall portion 32 is provided with a vacuum heat insulating material 33 in the middle of the partition outer wall surface by securing the viscosity of the urethane foam material 34 and the flow path width. The whole may be wrapped and further deterioration suppression of the vacuum heat insulating material 33 may be achieved.

FIG. 12 is an explanatory view showing a longitudinal section of another example of the ceiling wall portion 32 in the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 12, the ceiling wall part 32 may arrange | position the vacuum heat insulating material 33 in the vegetable compartment 5 side of a partition outer wall surface. In this case, the vacuum heat insulating material 33 can increase the coverage with respect to the inner wall surface of the vegetable compartment 5, and can suppress the heat penetration | invasion amount.

  As shown in FIG. 10, a back wall portion 31 that separates the vegetable chamber 5 and the cooler chamber 27 is formed on the back surface of the vegetable chamber 5. The back wall portion 31 is a heat insulating wall, and its internal configuration is configured using a heat insulating wall outline 38, a vacuum heat insulating material 39, and a foam heat insulating material 40 installed so as to wrap the vacuum heat insulating material 39. . In other words, the back wall portion 31 of the vegetable compartment 5 is provided with a single rectangular plate-like vacuum heat insulating material 39 between the inner wall of the vegetable compartment 5 and the cooler 14.

The thickness of the foam heat insulating material 40 on the back wall 31 is based on the limit thickness that can be molded, and if necessary, an additional heat insulating thickness is provided. When PS-FO is used as the material of the foam heat insulating material 40, for example, when the expansion ratio is 40 times, the thickness is configured to be at least about 5 mm.
The foam heat insulating material 40 of the back wall portion 31 is provided with an air passage 41 for blowing air to the freezer compartment 6. The front and rear arrangement of the air passage 41 is, from the rear, the cooler 14, the heat insulating wall shell 42, the foam heat insulating material 40 having the configuration of the air passage 41, the vacuum heat insulating material 39, the foam heat insulating material 40, and the inner wall of the vegetable compartment 5 It is in the order of the heat insulation wall outline 38 which comprises. And as shown in FIG. 8, the above-mentioned air path 41 to the freezer compartment 6 is arrange | positioned on the front projection surface of the cooler 14. As shown in FIG. That is, the rear wall portion 31 of the vegetable compartment 5 separates the air passage 41 to the cooler 14 and the freezer compartment 6 from the vegetable compartment 5 by the vacuum heat insulating material 39 over a wider range than the front projection surface of the cooler 14 and the air passage 41. ing.

As shown in FIG. 10, the foam heat insulating material 40 having the air passage 41 of the back wall portion 31 of the vegetable compartment 5 holds the air volume adjusting device 18 c for the vegetable compartment 5.
The air volume adjusting devices 18a, 18b, 18c for each storage room may be stored in the back wall part of the other room above the vegetable room 5 without being provided in the back wall part 31 of the vegetable room 5. According to this, it is not necessary to provide an extra space behind the vegetable compartment 5, and the large-capacity vegetable compartment 5 is provided.

FIG. 13 is a view showing another example of the left and right vertical cross sections around the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 13, the vacuum heat insulating material 39 of the back wall portion 31 of the vegetable compartment 5 is attached to the inner wall of the heat insulating wall shell 42 on the cooler 14 side in order to further secure the effect of the vacuum heat insulating material 39. Also good. That is, the vacuum heat insulating material 39 of the back wall part 31 of the vegetable compartment 5 is provided on the cooler 14 side in the back wall part 31.
In that case, the dimension in the height direction of the vacuum heat insulating material 39 is slightly reduced in response to the restriction of the position of the outlet of the cold air discharged from the blower 15 or the size of the outlet. Further, since the vacuum heat insulating material 39 is not covered with the foam heat insulating material 40, there is a concern that the deterioration of the vacuum heat insulating material 39 may be promoted.

FIG. 14 is a diagram illustrating another example of the left and right vertical cross sections around the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 14, the back wall 31 of the vegetable compartment 5 has a foam heat insulating material 40, a vacuum heat insulating material 39 and a cooler for the purpose of solving the problem in the case shown in FIG. 13 and protecting the vacuum heat insulating material 39. It may be installed between the inner wall of the 14th heat insulating wall shell 42.

FIG. 15: is a front view which shows the back wall part 31 seen from the vegetable compartment 5 of the refrigerator which concerns on Embodiment 1 of this invention.
As shown in FIG. 15, the back wall portion 31 of the vegetable compartment 5 is provided with one rectangular plate-like vacuum heat insulating material 39 between the inner wall of the vegetable compartment 5 and the cooler 14.
The size of the flat surface portion of the vacuum heat insulating material 39 is larger than the front projected area of the cooler 14. Further, the air passage 41 to the freezer compartment 6 is disposed on the front projection surface of the cooler 14. For this reason, as shown in FIG. 10, the rear wall 31 of the vegetable compartment 5 has a vacuum insulation of the air passage 41 to the cooler 14 and the freezer compartment 6 over a wider range than the front projection surface of the cooler 14 and the air passage 41. It is separated from the vegetable compartment 5 by a material 39. Thereby, the one-dimensional heat transfer amount which passes the back wall part 31 of the vegetable compartment 5 toward the inside of the vegetable compartment 5 is suppressed to the maximum extent.

As shown in FIG. 15, the cold air outlet 44 into the vegetable compartment 5 is formed in the upper right portion of the inner wall of the back wall portion 31 of the vegetable compartment 5. The cold air outlet 44 is located on the outside of the front projection surface of the rectangular plate-like vacuum heat insulating material 39 disposed on the back wall 31 of the vegetable compartment 5 and does not overlap the front projection surface. Yes.
The cold air outlet 44 is an air volume for the vegetable room in which the cold air generated by the cooler 14 is held in the foam insulation 40 above the cooler room 27 by the blower 15 disposed above the cooler 14. Supply via the adjusting device 18c.
The cold air outlet 44 may be formed on the inner wall of the wall portion other than the back wall portion 31 of the vegetable chamber 5.

The cold air return port 45 from the vegetable compartment 5 is formed on the lower left side diagonally with respect to the cold air outlet 44 in the inner wall of the back wall portion 31 of the vegetable compartment 5. The cold air return port 45 is located on the outside of the front projection surface of the rectangular plate-like vacuum heat insulating material 39 disposed on the back wall 31 of the vegetable compartment 5 and does not overlap the front projection surface. Yes.
The cold air blown out from the cold air outlet 44 is discharged from the cold air return port 45 located at the diagonal corner of the inner wall of the vegetable compartment 5 with respect to the cold air outlet 44, led to the cooler 14, and cooled again. It circulates through the vessel 14 so as to be cooled.
The cold air return port 45 may be formed on the inner wall of the wall portion other than the back wall portion 31 of the vegetable chamber 5.

As shown in FIG. 15, one rectangular and plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable compartment 5 avoids the vertical projection areas of the cold air outlet 44 and the cold air return port 45 in the vertical and horizontal directions. Are arranged so that their sides are substantially parallel to the vertical and horizontal directions.
In addition, unlike the structure shown in FIG. 15, one rectangular and plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable compartment 5 is a horizontal projection region of the cold air outlet 44 and the cold air return port 45. The vertical and horizontal sides may be installed so as to be substantially parallel to the vertical and horizontal directions.
Moreover, if the rectangular and plate-shaped vacuum heat insulating material 39 arranged on the back wall portion 31 of the vegetable room 5 is arranged so as not to block the cold air outlet 44 and the cold air return port 45, it is vertically and horizontally You may install so that a side may become diagonal with respect to a perpendicular direction and a horizontal direction.

FIG. 16 is a front view showing another example of the back wall portion 31 viewed from the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention. FIG. 17 is a front view showing another example of the back wall portion 31 viewed from the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 16, the cold air outlet 44 may be formed on the upper right side of the inner wall of the back wall 31 of the vegetable compartment 5. At this time, the cold air return port 45 is formed in the lower right portion of the inner wall of the back wall portion 31 of the vegetable compartment 5.
As shown in FIG. 17, the cold air outlet 44 may be formed on the upper left side of the inner wall of the back wall 31 of the vegetable compartment 5. At this time, the cold air return port 45 is formed in the lower left portion of the inner wall of the back wall portion 31 of the vegetable compartment 5.
That is, in the configuration shown in FIGS. 16 and 17, the cold air outlet 44 and the cold air outlet 45 are located in the same range in the vertical direction of the inner wall of the vegetable compartment 5. The cold air outlet 44 and the cold air return port 45 may be located in the same range in the horizontal direction of the inner wall of the vegetable compartment 5.
When it is set as the structure shown in FIG. 16, FIG. 17, the magnitude | size of the plane part of the vacuum heat insulating material 39 in the back wall part 31 of the vegetable compartment 5 becomes larger. For this reason, the vacuum heat insulating material 39 is arrange | positioned also in the part in which the other air path was comprised, the coverage with the vacuum heat insulating material 39 of the vegetable compartment 5 rises, and the heat insulation of the vegetable compartment 5 is strengthened.

FIG. 18 is a schematic diagram showing the vacuum heat insulating materials 24, 33, 36, and 39 in the partial wall portion 20 that partitions the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention. FIG. 19 is a schematic diagram showing the vacuum heat insulating materials 24, 33, 36, and 39 in the partial wall portion 20 that partitions the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention when viewed from the back.
The refrigerator 1 includes a vegetable compartment 5 that is set to a temperature higher than that of the upper ice making chamber 3, the temperature switching chamber 4, and the lower freezing compartment 6, and stores stored items that are foods such as vegetables. As shown in FIGS. 18 and 19, the vegetable room 5 includes the right wall part, the left side surface part, the ceiling wall part 32, the bottom wall part 35, the back wall part 31, and the door wall part that define the vegetable room 5. One rectangular vacuum heat insulating material 24, 33, 36, 39 is arranged on each 20.
Here, the right side wall portion of the vegetable room 5 has a rectangular plate-like shape over the right side wall part 20 of the entire box 19 of the refrigerator 1 including other storage rooms above and below the vegetable room 5. A vacuum heat insulating material 24 is arranged. The left wall part of the vegetable room 5 is a rectangular plate-like vacuum heat insulating material over the left wall part 20 of the entire box 19 of the refrigerator 1 including other storage rooms above and below the vegetable room 5. 24 is arranged.
On the other hand, the ceiling wall part 32 of the vegetable compartment 5 is provided with a single rectangular plate-like vacuum heat insulating material 33. The bottom wall portion 35 of the vegetable compartment 5 is provided with a single rectangular plate-like vacuum heat insulating material 36. The back wall 31 of the vegetable compartment 5 is provided with a single rectangular plate-like vacuum heat insulating material 39 so as to separate the cooler compartment 27. The door wall of the vegetable compartment 5 is provided with a single plate-like vacuum heat insulating material 24 in a rectangular shape.

  By comprising in this way, all six surfaces of the vegetable compartment 5 comprised in a substantially rectangular parallelepiped or a cube are covered with the vacuum heat insulating materials 24, 33, 36, and 39. For this reason, the coverage of the vacuum heat insulating materials 24, 33, 36, 39 with respect to the total wall surface area of the vegetable compartment 5 is 80% or more. Thereby, the heat transfer from the vegetable compartment 5 to another storage compartment can be suppressed. Or the cold transfer from the other storage room and the cooler room 27 to the vegetable room 5 can be suppressed. Moreover, the amount of heat penetration into the vegetable compartment 5 from the outside can be suppressed by the right side wall part, the left side wall part, and the door wall part.

FIG. 20 is a schematic diagram showing a heat retaining heater 46 installed in the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
If it comprises as shown in above-mentioned FIG. 18, FIG. 19, it will become the tendency for the average temperature of the vegetable compartment 5 to fall. For this reason, as shown in FIG. 20, in the vegetable compartment 5, in order to maintain the room temperature of the vegetable compartment 5 when needed, the heat retention heater 46 using an electrical resistance may be installed.
The warming heater 46 of the vegetable room 5 has an arbitrary capacity of about 3 W or more and 10 W or less at an arbitrary position on the bottom surface, back surface or both left and right side surfaces of the vegetable room 5, particularly at a point where the room temperature of the vegetable room 5 is relatively low. Installed at. The heat retaining heater 46 is energized at a time-based energization rate (energization time / reference time) according to the outside air temperature and the room temperature of the vegetable room 5.

FIG. 21 is a schematic diagram showing a heat radiating pipe 47 installed in the vegetable compartment 5 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 21, in the vegetable compartment 5, in addition to the heat retaining heater 46, a heat radiating pipe 47 is installed inside the urethane foam heat insulating material in the left and right side wall portions of the box 19 for the purpose of maintaining the temperature of the vegetable compartment 5. May be. In the vegetable compartment 5, a heat radiating pipe 47 may be installed on the heat insulating material side inside the outer wall of the partition of the bottom wall portion 35 for the purpose of maintaining the temperature of the vegetable compartment 5. The heat radiating pipe 47 circulates the refrigerant used for the cooler 14 and radiates heat into the vegetable compartment 5.
The amount of heat released from the heat radiating pipe 47 into the vegetable compartment 5 is such that the heat radiating pipe 47 is disposed with a unit heat radiating amount of 1.5 W / m or more and 3.0 W / m or less with a length of 5 m or more. It is good to secure about 5W. According to this, in the vegetable room 5 having an internal volume of about 90 L, a temperature increase effect of about 2 ° C. or more and 3 ° C. or less is obtained as the temperature.
In addition, when the capacity | capacitance of the vegetable compartment 5 is large, it is good to adjust the length of the heat radiating pipe 47 suitably.

FIG. 22 is a schematic diagram showing a heat radiation pipe 47 in the refrigerant circuit 7 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 22, on the refrigerant circuit 7, the heat radiating pipe 47 is connected to the dryer 12 via the dew prevention pipe 11 on the surface of the refrigerator 1, and then the flow path is switched downstream of the flow path switching three-way valve 48. The three-way valve 48 is connected to be switched.
Of the two outlet pipes 49 and 50 of the flow path switching three-way valve 48, one outlet pipe 49 on one side is connected to one side of the two capillary tubes 51. The capillary 51 to which the outlet pipe 49 is connected may be able to change the amount of decompression. The remaining other outlet pipe 50 is connected to the heat radiating pipe 47 to the vegetable compartment 5 described above.
If comprised in this way, since the heat radiating pipe 47 will radiate the heat | fever of a refrigerant | coolant in the vegetable compartment 5, and a load will increase on the air side, but it will work in the direction which the refrigerant | coolant condensing capacity increases on the air side, Efficiency is improved.
That is, in the case of heat radiation into the vegetable compartment 5 by the heat retaining heater 46, the load on the air side and the increase in the heater input greatly affect the power consumption. For this reason, the heat radiation into the vegetable compartment 5 by the heat radiating pipe 47 is relatively superior in terms of power consumption.

  As shown in FIG. 22, the other outlet pipe 49 not connected to the heat radiating pipe 47 to the vegetable compartment 5 on the downstream side of the flow path switching three-way valve 48 performs pseudo electronic control on the flow rate of the discharged refrigerant. It should be adjustable in multiple stages as an expansion valve. As a result, the power consumption can be further reduced.

FIG. 23 is a diagram illustrating a flow rate characteristic on the outlet pipe 49 side that is not connected to the heat radiating pipe 47 to the vegetable compartment 5 in the flow path switching three-way valve 48 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 23, in the flow path switching three-way valve 48, the flow rate characteristic on the other outlet pipe 49 side not connected to the heat radiating pipe 47 to the vegetable compartment 5 is controlled in five stages. The five-stage flow control is switching between fully closed, throttle flow A, throttle flow B, throttle flow C, and full open.

FIG. 24 is an explanatory diagram showing the configuration of the flow path switching three-way valve 48 of the refrigerator 1 according to Embodiment 1 of the present invention.
As shown in FIG. 24, the flow path switching three-way valve 48 is largely divided into two parts by a low voltage four-phase stepping motor 52 and a valve body 53. The interior of the valve body 53 includes a magnetized rotor 54, a center gear 55, a rotating gear 56, a rotating pad 57, a valve seat 58, an outer case 59, and a floor plate 60 as main components.
The flow path switching three-way valve 48 rotates the magnetized rotor 54 by unipolar driving the four-phase stepping motor 52 by 1-2 phase excitation. The magnetized rotor 54 is directly connected to the center gear 55. When the magnetized rotor 54 rotates, the center gear 55 rotates by the same amount in the same direction as the magnetized rotor 54.

  FIG. 25 is a diagram collectively showing a flow path formation state with respect to STEP of the rotary gear 56 in the flow path switching three-way valve 48 of the refrigerator 1 according to Embodiment 1 of the present invention. FIG. 25B is a diagram showing a case where the flow path is closed in the 4 STEP state of the rotating gear 56, and FIG. 25C is a diagram showing the aperture A in the 36 STEP state of the rotating gear 56. 25 (d) is a diagram showing a case where the aperture B is set in the 73 STEP state of the rotating gear 56, and FIG. 25 (e) is a diagram where the aperture C is set in the 110 STEP state of the rotating gear 56. FIG. 25 (f) is a diagram showing a case where the flow path is opened in the 177 STEP state of the rotating gear 56, and FIG. 25 (g) is a case where the rotation gear 56 is in the 200 STEP state. It is a figure showing .

As shown in FIG. 25, the center gear 55 and the rotation gear 56 are directly joined. For this reason, the rotation pad 57 fixed to the rotation gear 56 receives the rotation drive of the center gear 55 on the basis of the central axis provided in the valve seat 58 and performs a rotation operation.
The rotary pad 57 is provided with three orifices 61, 62, and 63 having different inner diameters. When one of the three orifices 61, 62, 63 overlaps with the outlet orifice 64 of the valve seat 58 by the rotation operation of the rotary pad 57, a predetermined flow rate flows out.
As shown in FIG. 25B, when the flow path is closed in the 4 STEP state of the rotating gear 56, the flow rate of the flow path switching three-way valve 48 is fully closed as shown in FIG. As shown in FIG. 25C, when the throttle gear A is in the 36 STEP state of the rotary gear 56, the flow rate of the flow path switching three-way valve 48 is in the flow rate A state of FIG. As shown in FIG. 25 (d), when the throttle gear B is set in the 73 STEP state of the rotary gear 56, the flow rate of the flow path switching three-way valve 48 is in the flow rate B state of FIG. As shown in FIG. 25 (e), when the throttle gear C is in the 110 STEP state of the rotary gear 56, the flow rate of the flow path switching three-way valve 48 is in the flow rate C state of FIG. As shown in FIG. 25 (f), when the flow path is opened in the 177 STEP state of the rotating gear 56, the flow rate of the flow path switching three-way valve 48 is in the fully open state of FIG.

FIG. 26 is an explanatory diagram showing the rotary pad 57 and the valve seat 58 in the flow path switching three-way valve 48 of the refrigerator 1 according to the first embodiment of the present invention in the AA cross section of FIG.
As shown in FIG. 26, the peripheral shape of the orifice 61 formed in the rotary pad 57 is deeply formed stepwise. The orifices 61, 62, 63 formed in the rotating pad 57 are very small and are difficult to mold. For this reason, the peripheral shape of the orifices 61, 62, 63 requires that the depth of the orifices 61, 62, 63 be shallow, and the reverse driving (CCW) of the stepping motor 52 caused by backlash of the connecting gear. From the relationship between the removal of the influence of the hysteresis at the time and the removal of the chamfered shape variation of the outlet orifice 64 formed in the valve seat 58, it is deeply molded stepwise as described above.
If comprised in this way, the influence of the hysteresis at the time of reverse drive (CCW) of the stepping motor 52 can be removed, the flow rate is stabilized, the stability of the mold is increased, and the risk of correction of the manufactured product can be suppressed. .

The flow path switching three-way valve 48 described above is switched to an optimum refrigerant flow rate by the load of the refrigerator 1, and the flow rate control width is increased as compared to the conventionally used flow path switching three-way valve. In addition, the flow path switching three-way valve 48 can reduce the cost by simultaneously reducing the number of capillaries required for flow rate adjustment.
In addition, when using the heat retaining heater 46 using electrical resistance for the heat insulation of the vegetable room 5, the flow path switching valve is left with only the flow controllable side of the two outlets of the flow path switching valve. A way valve may be used.

  FIG. 27 is a diagram collectively showing the blow-out air passage 65 and the return air passage 28 for the cold air to the refrigerator compartment 2 of the refrigerator 1 according to Embodiment 1 of the present invention, and FIG. FIG. 27B is an explanatory view showing the cold air blowing air passage 65 and the return air passage 28 in left and right vertical sections, and FIG. 27B is an explanatory view showing the cold air blowing air path 65 to the refrigerator compartment 2 in the front and rear longitudinal sections. FIG. 27 (c) is an explanatory view showing the return air passage 28 for the cold air from the refrigerator compartment 2 in a longitudinal section.

As shown in FIGS. 27 (a) and 27 (b), the cold air blowing air path 65 to the refrigerator compartment 2 is the vegetable room 5 after the cold air is discharged from the blower 15 installed above the cooler 14. An air passage passing through the back wall 31 separating the cooler chamber 27 from the cooler chamber 27, an air passage toward the refrigerating chamber 2 in the foam insulation above the cooler chamber 27, the refrigerating chamber 2, the ice making chamber 3, and The air path in the foam heat insulating material in the partition partitioning the temperature switching chamber 4 and the air path molded with the foam heat insulating material installed on the back side of the refrigerator compartment 2 are connected to each other.
The air volume adjusting device 18 a that adjusts the amount of cold air supplied to the refrigerating chamber 2 adjusts the amount of cold air supplied to the refrigerating chamber 2 in the middle of the air flow path 65 of the cold air to the refrigerating chamber 2. The air volume adjusting device 18a may be installed in any of the above-described air paths.
In addition, at least one cold air outlet in the refrigerator compartment 2 is formed on each storage storage shelf in the refrigerator compartment 2 so that the cold air distribution in the shelf and the cold air distribution between the shelves are within 2 ° C. The amount of blowout is adjusted.

  As shown in FIGS. 27 (a) and 27 (c), the return air passage 28 for the cold air from the refrigerator compartment 2 is installed on the right side of the cooler 14 so as to be able to perform necessary heat insulation using a foam heat insulating material. The The outlet of the cool air return air passage 28 from the refrigerating chamber 2 is connected to a drip tray 66 that receives the melted water during defrosting from the lower right side of the cooler 14 in the cooler chamber 27.

  As shown in FIG. 27A, a heater for avoiding blockage of the return air passage 28 due to frost in the air passage when necessary heat insulation is not ensured in the return air passage 28 from the refrigerator compartment 2. 67 is preferably provided. The heater 67 is installed at an arbitrary position in the return air passage 28 in the longitudinal direction of the air passage within the range of the vertical projection size of the cooler 14 and generates heat when necessary. For example, the heater 67 may be provided so as to follow the flow direction of the return cold air within a range of 100 mm above and below around the joint between the return air passage 28 and the drip tray 66.

  FIG. 28 is a diagram collectively showing a cold air blowing air path 68 and a return air path 69 to the ice making chamber 3 of the refrigerator 1 according to Embodiment 1 of the present invention, and FIG. FIG. 28B is an explanatory view showing the cold air blowing air passage 68 and the return air passage 69 in left and right vertical sections, and FIG. 28B is a perspective view showing the cold air blowing 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 a foam heat insulating material above the cooler chamber 27 after the cold air is discharged from the blower 15 installed above the cooler 14. The air path toward the ice making chamber 3 inside is connected to the air path molded by the foam heat insulating material installed on the back side of the ice making chamber 3.
Note that an air volume adjustment device (not shown) that adjusts the amount of cold air supplied to the ice making chamber 3 adjusts the amount of cold air supplied to the ice making chamber 3 in the middle of the cold air blowing air path 68 to the ice making chamber 3. The air volume adjusting device may be installed in any of the above-described air paths.
As shown in FIG. 28 (b), the cold air blown out from the cold air outlet 70 at an arbitrary position on the back surface of the ice making chamber 3 flows into the ice making mechanism 71.

As shown in FIG. 28A, the return air passage 69 from the ice making chamber 3 is projected from the front surface of the cooler 14 to the ice making chamber 3 side from the center of the refrigerator 1 within the full width of the cooler 14 and the rear projection of the ice making chamber 3. Installed within the width.
The return air passage 69 from the ice making chamber 3 is a foam return adjacent to the cold air return port 72 arbitrarily installed in the back wall portion of the ice making chamber 3, the back side of the outer surface of the ice making chamber surface, and the outer surface of the ice making chamber 3 surface. The discharge port of the return air passage 69 from the ice making chamber 3 joins in the vicinity of the cold air return port from the freezing chamber 6. In order to avoid a merging pressure loss at the merging point, the cold air return port from the freezing chamber 6 in the vicinity of the cold air discharge port from the ice making chamber 3 has a range equal to or larger than the horizontal dimension of the return air passage 69 from the ice making chamber 3. doing.
Note that the return air passage 69 from the ice making chamber 3 may be directly returned into the cooler chamber 27 at a position above the cold air return port from the freezing chamber 6.

  FIG. 29 is a diagram collectively showing a cold air blowing air path 73 and a return air path 29 to the temperature switching chamber 4 of the refrigerator 1 according to Embodiment 1 of the present invention, and FIG. 29 (a) is a temperature switching chamber. FIG. 29 is an explanatory view showing the cold air blowing air path 73 and the return air path 29 to the left and right vertical sections, and FIG. 29B is an explanatory view showing the cold air return air path 29 from the temperature switching chamber 4 in the front and rear longitudinal sections. FIG.

As shown in FIG. 29A, the cold air blowing path 73 to the temperature switching chamber 4 is foamed above the cooler chamber 27 after the cool air is discharged from the blower 15 installed above the cooler 14. An air path toward the temperature switching chamber 4 in the heat insulating material and an air path molded with a foam heat insulating material installed on the back side of the temperature switching chamber 4 are connected.
The air volume adjusting device 18 b that adjusts the amount of cool air supplied to the temperature switching chamber 4 adjusts the amount of cool air supplied to the temperature switching chamber 4 in the middle of the cool air blowing air path 73 to the temperature switching chamber 4. The air volume adjusting device 18b may be installed in any of the above-described air paths.

  As shown in FIGS. 29A and 29B, the return air passage 29 from the temperature switching chamber 4 includes a cold air return port arbitrarily installed in the back wall portion of the temperature switching chamber 4, and a temperature switching chamber. 4 on the outer surface of the outer surface of the surface 4 and part of the foam insulation adjacent to the outer surface of the temperature switching chamber 4, and the outlet of the return air passage 29 from the temperature switching chamber 4 is connected to the freezer chamber 6. Installed on the right side of the return air channel.

  FIG. 30 is a diagram collectively showing the blowout air flow path 41 and the return air flow path 74 of the cold air to the freezer compartment 6 of the refrigerator according to Embodiment 1 of the present invention, and FIG. It is explanatory drawing which shows the blowing air path 41 and the return air path 74 of cold air with a right-and-left vertical cross section, and FIG.30 (b) shows the blowing air path 41 and the return air path 74 of the cold air to the freezer compartment 6 with a longitudinal longitudinal cross section. It is explanatory drawing.

As shown in FIG. 30A and FIG. 30B, the cold air blowing air path 41 to the freezing room 6 is the vegetable room 5 after the cold air is discharged from the blower 15 installed above the cooler 14. An air passage in the back wall 31 of the vegetable compartment 5 separating the cooler compartment 27 and an air passage provided in the bottom wall portion 35 of the vegetable compartment 5 between the vegetable compartment 5 and the freezing compartment 6. Connected and configured.
The cold air that has passed through the air flow path 41 of the cold air to the freezer compartment 6 is guided into a storage case that is stacked in a plurality of stages in the freezer compartment 6 by a guide portion provided on the back ceiling of the freezer compartment 6. The stored item in the freezer compartment 6 is cooled.

  As shown in FIGS. 30A and 30B, the return air path 74 from the freezer compartment 6 exhausts cold air from the inside of the freezer compartment 6 by a guide portion provided on the back ceiling of the freezer compartment 6. It is comprised by the air path formed in the range within the width | variety of the cooler 14 provided in the back of the bottom wall part 35 of the vegetable compartment 5 between the rear vegetable compartment 5 and the freezer compartment 6. FIG. The outlet of the return air passage 74 from the freezer compartment 6 is a drip tray that receives the molten water at the time of defrosting from the lower right side of the cooler 14 in the cooler compartment 27 in the same manner as the return air passage 28 from the refrigerator compartment 2. 66.

  A guide portion (not shown) provided on the back ceiling of the freezer compartment 6 serves as both a blowout guide into the freezer compartment 6 and a return guide from the freezer compartment 6 and faces the refrigerator 1 from the front. It is arranged back and forth. Specifically, a blow-out guide into the freezer compartment 6 is arranged on the front side of the refrigerator 1. A return-side guide from the inside of the freezer compartment 6 is disposed on the back side of the refrigerator 1.

According to the first embodiment, the refrigerator 1 includes a vegetable room 5 that is set to a higher temperature than the other surrounding rooms and stores a stored product that is a food such as vegetables. In the vegetable compartment 5, one rectangular vacuum heat insulating material 24, 33, 36, 39 is arranged on each wall portion 20 that divides the six surfaces of the vegetable compartment 5.
According to this structure, the covering area of the vegetable compartment 5 by the vacuum heat insulating materials 24, 33, 36, and 39 increases as much as possible. Further, the vacuum heat insulating materials 24, 33, 36, and 39 are rectangular, and the heat insulating performance required by a simple configuration can be secured without providing a cutout or a hole in the vacuum heat insulating materials 24, 33, 36, and 39. Therefore, the manufacturing cost can be reduced, the assembly is simple, and the manufacturing efficiency is good.

According to Embodiment 1, the refrigerator 1 is laid out in the order of the refrigerator compartment 2, the ice making compartment 3, the temperature switching compartment 4, the vegetable compartment 5, and the freezer compartment 6 from the top.
According to this configuration, the ice making chamber 3 and the temperature switching chamber 4 that store stored items such as food at a lower temperature than the vegetable chamber 5 are disposed above the vegetable chamber 5. In addition, a freezer compartment 6 for storing stored items such as food at a lower temperature than the vegetable compartment 5 is disposed below the vegetable compartment 5. For this reason, inflow of cold heat may occur in the vegetable compartment 5 and the inside of the vegetable compartment 5 may be too cold. However, one rectangular vacuum heat insulating material 24, 33, 36, 39 is arranged on each wall 20 that partitions the vegetable compartment 5. Thereby, inflow of the cold heat which goes to the vegetable chamber 5 from the circumference | surroundings of the vegetable chamber 5 can be prevented, and the inside of the vegetable chamber 5 is not cooled too much. On the other hand, heat radiation from the inside of the vegetable compartment 5 to the periphery of the refrigerator 1 outside the vegetable compartment 5 can also be prevented, and the inside of the vegetable compartment 5 can be maintained at the set temperature with high efficiency.
Moreover, the vegetable room 5 with a high use frequency can be arrange | positioned in the height position of a user's waist, and a user's convenience can be improved.

According to Embodiment 1, the rectangular vacuum heat insulating material 24 of 1 sheet is distribute | arranged to the side wall part of the vegetable compartment 5 over the two side wall parts of the whole box 19 of the refrigerator 1 including another room, respectively. . The rectangular vacuum heat insulating materials 24, 33, 36, and 39 are arranged on the ceiling wall portion 32, the bottom wall portion 35, the back wall portion 31, and the door wall portion of the vegetable room 5, respectively.
According to this configuration, one rectangular vacuum heat insulating material 24 is arranged over the two side wall portions of the entire box 19 of the refrigerator 1 including the other chambers in the side wall portion of the vegetable room 5, and is used for the refrigerator 1. Vacuum insulation is arranged efficiently. For this reason, the number of vacuum heat insulating materials used can be reduced, the manufacturing cost can be reduced, the assembly is simple, and the manufacturing efficiency is improved.

According to Embodiment 1, the cooler 14 is provided behind the vegetable compartment 5. The back wall 31 of the vegetable compartment 5 is provided with one rectangular vacuum heat insulating material 39 between the inner wall of the vegetable compartment 5 and the cooler 14.
According to this configuration, inflow of cold heat from the cooler 14 toward the vegetable compartment 5 can be prevented. Thereby, the temperature rise of the cooler 14 can be prevented. Moreover, the temperature fall of the back wall part 31 of the vegetable compartment 5 can be prevented. And problems, such as dew in the vegetable room 5 and frost formation, can be prevented.

According to the first embodiment, the rear wall 31 of the vegetable compartment 5 includes the cold air passage 41 communicating from the cooler 14 to the freezer compartment 6 between the inner wall of the vegetable compartment 5 and the cooler 14. . The air passage 41 is disposed on the front projection surface of the cooler 14.
According to this configuration, the air passage 41 through which cool air having a low temperature flows can be gathered together with the cooler 14, and the thermal efficiency can be improved.

According to the first embodiment, one rectangular vacuum heat insulating material 39 arranged between the inner wall of the vegetable compartment 5 and the cooler 14 at the back wall portion 31 of the vegetable compartment 5 includes the cooler 14 and the wind The path 41 is separated from the vegetable compartment 5 over a wider range than the front projection surface of the cooler 14 and the air path 41.
According to this configuration, it is possible to prevent inflow of cold heat from the cooler 14 and the air passage 41 toward the vegetable compartment 5 with only one rectangular vacuum heat insulating material 39.

According to the first embodiment, the refrigerator 1 includes a vegetable room 5 that is set to a higher temperature than the other surrounding rooms and stores a stored product that is a food such as vegetables. The refrigerator 1 includes a cooler 14 provided behind the vegetable compartment 5. The refrigerator 1 includes a back wall portion 31 provided between the inner wall of the vegetable compartment 5 and the cooler 14. The refrigerator 1 includes a vacuum heat insulating material 39 provided on the cooler 14 side of the back wall portion 31.
According to this configuration, inflow of cold heat from the cooler 14 toward the vegetable compartment 5 can be prevented. Thereby, the temperature rise of the cooler 14 can be prevented. Moreover, the temperature fall of the back wall part 31 of the vegetable compartment 5 can be prevented. And problems, such as dew in the vegetable room 5 and frost formation, can be prevented.

According to the first embodiment, the refrigerator 1 is provided with the vacuum heat insulating materials 33 and 36 on the ceiling wall part 32 and the bottom wall part 35 that partition the vegetable room 5 and the surrounding other rooms.
According to this structure, the covering area of the vegetable compartment 5 by the vacuum heat insulating materials 33 and 36 increases as much as possible. Further, the vacuum heat insulating materials 33 and 36 are not provided with a notch or a hole, and a necessary heat insulating performance can be ensured with a simple configuration. Moreover, the inflow of the cold heat which goes to the vegetable chamber 5 from the circumference | surroundings of the vegetable chamber 5 can be prevented, and the inside of the vegetable chamber 5 is not cooled too much.

The vacuum heat insulating materials 24, 33, 36, and 39 are one rectangular plate-like shape.
According to this configuration, the vacuum heat insulating materials 24, 33, 36, and 39 are rectangular, and the heat insulating performance required by a simple configuration is provided without providing the vacuum heat insulating materials 24, 33, 36, and 39 with notches or holes. Can be secured. Therefore, the manufacturing cost can be reduced, the assembly is simple, and the manufacturing efficiency is good.

According to the first embodiment, the cold air outlet 44 and the cold air return port 45 are formed on the inner wall of the back wall 31 of the vegetable compartment 5. One rectangular vacuum heat insulating material 39 arranged on the back wall 31 of the vegetable compartment 5 does not overlap the rear projection plane of the cold air outlet 44 and the cold air outlet 45.
According to this configuration, the cold air outlet 44 and the cold air return port 45 can be formed at positions that are not separated by the single rectangular vacuum heat insulating material 39. For this reason, since the cold air outlet 44 and the cold air return port 45 are formed, special processing such as making a hole in the vacuum heat insulating material 39 or providing a notch in the vacuum heat insulating material 39, or vacuum heat insulating There is no need to use multiple materials. Therefore, the manufacturing cost can be reduced, the assembly is simple, and the manufacturing efficiency is good.

According to the first embodiment, one rectangular vacuum heat insulating material 39 disposed on the back wall portion 31 of the vegetable room 5 avoids the vertical projection region or the horizontal projection region of the cold air outlet 44 and the cold air return port 45. The vertical and horizontal sides are installed so as to be substantially parallel to the vertical direction and the horizontal direction.
According to this configuration, one rectangular vacuum heat insulating material 39 fits the shape of the rectangular parallelepiped of the refrigerator 1, the manufacturing worker can be prevented from mistakenly placing the vacuum heat insulating material 39, and assembly is simple, Manufacturing efficiency is good.

According to the first embodiment, the cold air outlet 44 and the cold air return port 45 are respectively located at diagonal corners of the inner wall of the vegetable compartment 5.
According to this configuration, the cold air outlet 44 and the cold air return port 45 can be formed at positions that are not separated by the single rectangular vacuum heat insulating material 39. Further, the distance between the cold air outlet 44 and the cold air return port 45 can be separated, and the cold air blown out from the cold air outlet 44 and returned to the cold air return port 45 travels throughout the vegetable compartment 5, thereby improving the thermal efficiency.

According to Embodiment 1, the cold air outlet 44 and the cold air return port 45 are located in the same range in the vertical direction or the horizontal direction of the inner wall of the vegetable compartment 5.
According to this configuration, the cold air outlet 44 and the cold air return port 45 can be formed at positions that are not separated by the single rectangular vacuum heat insulating material 39. Further, the cold air outlet 44 and the cold air return port 45 approach each other, and the area where the single rectangular vacuum heat insulating material 39 is arranged on the back wall portion 31 of the vegetable compartment 5 can be enlarged.

According to the first embodiment, the refrigerator 1 includes an electrical component that adjusts the opening and closing of a plurality of air paths. The electrical parts are stored in the back wall of the other room above the vegetable room 5.
According to this structure, it is not necessary to provide an extra space behind the vegetable compartment 5, and the large-capacity vegetable compartment 5 is provided.

According to the first embodiment, the vegetable compartment 5 has the heat retaining heater 46 on one of the wall portions 20 that partitions the vegetable compartment 5.
According to this configuration, when the inside of the vegetable compartment 5 is too cold, the inside of the vegetable compartment 5 is warmed by the heat retaining heater 46.

According to Embodiment 1, the vegetable compartment 5 has the radiation pipe 47 which distribute | circulates the refrigerant | coolant used for the cooler 14 to any wall part 20 which divides the vegetable compartment 5, and radiates heat.
According to this structure, when the inside of the vegetable compartment 5 is too cold, the inside of the vegetable compartment 5 is warmed with the refrigerant | coolant which distribute | circulates the thermal radiation pipe 47 and radiates heat.

According to Embodiment 1, the storage room is the vegetable room 5. Other rooms around the storage room can be switched to a freezing room 6, an ice making room 3, a chilled room, a storage room having a temperature lower than the temperature range of the vegetable room 5, or a temperature range lower than the temperature range of the vegetable room 5. This is a temperature switching chamber 4.
According to this structure, there exists a possibility that the inflow of cold heat may arise in the vegetable compartment 5, and the vegetable compartment 5 may become too cold. However, one rectangular vacuum heat insulating material 24, 33, 36, 39 is arranged on each wall 20 that partitions the vegetable compartment 5. Thereby, inflow of the cold heat which goes to the vegetable chamber 5 from the circumference | surroundings of the vegetable chamber 5 can be prevented, and the inside of the vegetable chamber 5 is not cooled too much. On the other hand, heat radiation from the inside of the vegetable compartment 5 to the periphery of the refrigerator 1 outside the vegetable compartment 5 can also be prevented, and the inside of the vegetable compartment 5 can be maintained at the set temperature with high efficiency.

Embodiment 2. FIG.
The refrigerator 1 according to Embodiment 2 causes the return cold air from the refrigerator compartment 2 to flow into the vegetable compartment 5 with respect to the refrigerator 1 according to Embodiment 1. For this reason, the return air path of the cold air from the refrigerator compartment 2 and the return air path from the vegetable compartment 5 merge on the lower back side of the vegetable compartment 5, and the return air passage from the freezer compartment 6 is divided into left and right. It is comprised so that it may return to the cooler chamber 27 from the inside.
In the second embodiment, the characteristic part will be described. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

FIG. 31 is a front view showing the back wall portion 31 viewed from the vegetable compartment 5 of the refrigerator 1 according to Embodiment 2 of the present invention.
As shown in FIG. 31, a refrigeration return port 75 is formed in the vegetable compartment 5 at the upper right side of the inner wall of the back wall portion 31 of the vegetable compartment 5. The refrigeration return port 75 is located on the outside of the front projection surface of the rectangular plate-like vacuum heat insulating material 39 disposed on the back wall 31 of the vegetable compartment 5 and does not overlap the front projection surface. Yes.
In the vegetable compartment 5, a refrigerated return air passage 76 is formed on the back of the inner wall of the back wall portion 31 of the vegetable compartment 5. The refrigeration 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 where the refrigeration return port 75 is formed to the cold air outlet 44 at the center lower portion of the inner wall of the back wall portion 31.
The cold air outlet 44 is formed to be elongated in the left and right at the center lower part of the inner wall of the back wall 31. The cold air outlet 44 is located on the outside of the front projection surface of the rectangular plate-like vacuum heat insulating material 39 disposed on the back wall 31 of the vegetable compartment 5 and does not overlap the front projection surface. Yes.
Since the cold air outlet 44 is formed behind the inner wall of the back wall portion 31, the rectangular plate-like vacuum heat insulating material 39 is arranged behind the back wall portion 31 of the vegetable compartment 5. It may be blocked.
The cold air outlet 44 may be provided with an opening amount adjusting mechanism as a cold air amount adjusting mechanism capable of adjusting the opening amount from the left and right sides as shown by the arrows in the drawing.

  A return air path of cold air (not shown) from the refrigerator compartment 2 is installed on the right side of the cooler 14 so as to enable necessary heat insulation using a foam heat insulating material. The return air path of the cold air from the refrigerator compartment 2 extends from the temperature switching chamber 4 and the vegetable compartment 5 to the outer outline below the ceiling wall portion 32 in the rear projection plane of the ceiling wall portion 32 of the vegetable compartment 5. A guide portion is formed on the surface and extended. The return air path of the cold air from the refrigerator compartment 2 is an air passage formed in the bottom wall portion 35 of the vegetable compartment 5 between the vegetable compartment 5 and the freezer compartment 6 at the substantially lower center of the back of the vegetable compartment 5. Connected to.

  The cool air blown by the blower 15 installed above the cooler 14 and generated by the cooler 14 passes through the air volume adjusting device 18a held in the foam heat insulating material above the cooler chamber 27. And supplied to the refrigerator compartment 2. Thereafter, the cold air is supplied from a cold air return port in the refrigerating chamber 2 to a refrigerating return port 75 formed in the back wall portion 31 of the vegetable chamber 5 via a return air passage. The cold air supplied to the refrigeration return port 75 is supplied to the refrigeration return air passage 76 formed in the back wall portion 31 of the vegetable room 5 and supplied into the vegetable room 5 from the cold air outlet 44 in the vegetable room 5. Is done. The subsequent cold air is supplied to a cold air return port 45 (not shown) in the vegetable room 5.

FIG. 32 is a front view showing another example of the back wall portion 31 viewed from the vegetable compartment 5 of the refrigerator 1 according to Embodiment 2 of the present invention.
The refrigerated return air passage 76 disposed in the back wall portion 31 of the vegetable compartment 5 has no heat insulating function between the vegetable compartment 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 and the vegetable compartment 5.

FIG. 33 is a front view showing another example of the back wall portion 31 viewed from the vegetable compartment 5 of the refrigerator 1 according to Embodiment 2 of the present invention.
As shown in FIG. 33, a plurality of holes 77 are provided in the inner wall surface that separates the refrigerated return air passage 76 and the vegetable compartment 5 in order to adjust the temperature in the vegetable compartment 5 as in the configuration shown in FIG. 32. May be.
A slider 78 that can freely open and close the plurality of holes 77 provided on the inner wall surface may be provided.
With such a configuration, the user can arbitrarily adjust the temperature in the vegetable compartment 5 by adjusting the number of holes 77 to be closed by sliding the slider 78 as shown by the arrow in the figure.

  In the second embodiment, since the temperature can be adjusted in the vegetable compartment 5, the flow rate adjusting device that adjusts the amount of cold air supplied to the vegetable compartment 5 does not have to be provided in the air passage portion on the back side of the refrigerator 1. good.

According to the second embodiment, the cold air outlet 44 is cooled by the cooler 14 that returns from another room that stores a stored product such as food at a lower temperature than the vegetable room 5 around the vegetable room 5. The low-temperature cold air thus produced is blown into the vegetable compartment 5.
According to this configuration, there is no need to provide an air path or an electrical component for adjusting opening / closing of the air path for the vegetable compartment 5 alone. For this reason, manufacturing cost can be reduced, assembly is simple, and manufacturing efficiency is good.

According to the second embodiment, the vegetable compartment 5 has a cold air amount adjusting mechanism that adjusts the amount of cold air blown out from the cold air outlet 44.
According to this structure, the temperature in the vegetable compartment 5 can be adjusted, and the store which is foodstuffs, such as a vegetable, can be preserve | saved suitably.

Note that Embodiments 1 and 2 of the present invention may be combined or applied to other portions.
Moreover, in Embodiment 1, 2 of this invention, the vacuum heat insulating materials 24, 33, 36, and 39 were one rectangular and plate shape. However, it is not limited to this. The vacuum heat insulating materials 24, 33, 36, and 39 may be formed in a shape having a rounded corner, a triangular shape, a polygonal shape, an elliptical shape, a circular shape, and other various shapes.

  1 refrigerator, 2 refrigerator compartment, 3 ice making room, 4 temperature switching room, 5 vegetable room, 6 freezer room, 7 refrigerant circuit, 8 compressor, 9 air-cooled condenser, 10 condenser, 11 dew prevention pipe, 12 dryer, 13 Pressure reducing device, 14 Cooler, 15 Blower, 16a Temperature sensor, 16b Temperature sensor, 16c Temperature sensor, 16d Temperature sensor, 17 Control board, 18a Air volume adjusting device, 18b Air volume adjusting device, 18c Air volume adjusting device, 19 Box, 20 Wall parts, 21 Sheet metal, 22 Inner box, 23 Heat insulating material, 24 Vacuum heat insulating material, 25 Support, 26 Spacer, 27 Cooler room, 28 Return air path, 29 Return air path, 30 Blow air path, 31 Back wall part , 32 Ceiling wall, 33 Vacuum insulation, 34 Urethane foam, 35 Bottom wall, 36 Vacuum insulation, 37 Urethane foam, 38 Thermal insulation wall 39 Vacuum heat insulating material, 40 Foam heat insulating material, 41 Outlet air passage, 42 Heat insulation wall outline, 44 Cold air outlet, 45 Cold air return port, 46 Insulating heater, 47 Heat radiating pipe, 48 Channel switching three-way valve, 49 Outlet pipe, 50 Outlet pipe, 51 Capillary tube, 52 Stepping motor, 53 Valve body, 54 Magnetized rotor, 55 Center gear, 56 Rotating gear, 57 Rotating pad, 58 Valve seat, 59 Outer case, 60 Floor plate, 61 Orifice, 62 Orifice, 63 Orifice, 64 outlet orifice, 65 air outlet, 66 drip tray, 67 heater, 68 air outlet, 69 return air passage, 70 cold air outlet, 71 ice making mechanism, 72 cold air outlet, 73 air outlet, 74 return air passage, 75 Refrigeration return port, 76 Refrigeration return air passage, 77 holes, 78 slider.

Claims (19)

It has a storage room that is set to a higher temperature than the other surrounding rooms to store the stored items,
The storage room is a refrigerator in which a vacuum heat insulating material is arranged on each wall section defining the storage room. The refrigerator is laid out in the order of a refrigerator room, an ice making room and a temperature switching room, a vegetable room, and a freezer room from above.
The refrigerator according to claim 1, wherein the storage room is the vegetable room. The vacuum heat insulating material is arranged over the two side wall portions of the entire box of the refrigerator including the other chambers in the side wall portion of the storage room,
The refrigerator according to claim 1 or 2, wherein the vacuum heat insulating material is arranged on each of a ceiling wall portion, a bottom wall portion, a back wall portion, and a door wall portion of the storage chamber. A cooler behind the storage room;
The refrigerator according to any one of claims 1 to 3, wherein the vacuum heat insulating material is disposed between the storage chamber wall and the cooler on the back wall portion of the storage chamber. The back wall portion of the storage chamber includes a cold air passage communicating from the cooler to a part of the chamber between the storage chamber wall and the cooler,
The refrigerator according to claim 4, wherein the air path is disposed on a front projection surface of the cooler.   The vacuum heat insulating material disposed between the storage chamber wall and the cooler at the back wall portion of the storage chamber, the cooler and the air passage from the storage chamber to the cooler and the air passage. The refrigerator according to claim 5, having a size separated over a wider range than the front projection surface. A storage room that is set to a higher temperature than the other surrounding rooms and stores the stored items;
A cooler provided behind the storage room;
A back wall provided between the storage chamber wall and the cooler;
A vacuum heat insulating material provided on the cooler side of the back wall;
Refrigerator equipped with.   The refrigerator according to claim 7, wherein a vacuum heat insulating material is disposed on a wall portion that partitions between the storage chamber and the surrounding other chambers.   The refrigerator according to any one of claims 1 to 8, wherein the vacuum heat insulating material is a single rectangular plate. A cold air outlet and a cold air return port are formed in the storage chamber wall of the back wall portion of the storage chamber,
The refrigerator according to any one of claims 1 to 9, wherein the vacuum heat insulating material disposed on a back wall portion of the storage chamber does not overlap on a rear projection surface of the cold air outlet and the cold air return port.   The vacuum heat insulating material disposed on the back wall portion of the storage chamber has vertical and horizontal sides substantially parallel to the vertical direction and the horizontal direction, avoiding a vertical projection region or a horizontal projection region of the cold air outlet and the cold air return port. The refrigerator of Claim 10 installed so that it might become.   The refrigerator according to claim 10 or 11, wherein the cold air outlet and the cold air return port are respectively located at diagonal corners of the storage chamber wall.   The refrigerator according to claim 10 or 11, wherein the cold air outlet and the cold air return port are located in the same range in a vertical direction or a horizontal direction of the storage chamber wall. Equipped with electrical parts that adjust the opening and closing of multiple air passages,
The refrigerator according to any one of claims 5 to 13, wherein the electrical component is stored in a back wall portion of another room above the storage room.   The refrigerator according to any one of claims 1 to 14, wherein the storage room has a heat-retaining heater on any wall section that divides the storage room.   The refrigerator according to any one of claims 4 to 15, wherein the storage chamber has a heat radiating pipe that radiates heat by circulating a refrigerant used in the cooler on any wall section that divides the storage chamber.   The cold air outlet blows cold air returning from another room storing the stored material at a temperature lower than that of the storage room around the storage room or low-temperature cold air cooled by the cooler into the storage room. The refrigerator of any one of Claims 10-16.   The refrigerator according to claim 17, wherein the storage chamber has a cold air amount adjusting mechanism for adjusting an amount of cold air blown out from the cold air outlet. The storage room is a vegetable room,
The other room is a freezing room, an ice making room, a chilled room, a storage room having a temperature lower than the temperature range of the vegetable room, or a temperature switching room that can be switched to a temperature range lower than the temperature range of the vegetable room. The refrigerator according to any one of claims 1 to 18.

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