TW202328610A - Refrigerator - Google Patents

Abstract

A refrigerator includes a thermal insulation box body in which a plurality of storage compartments are formed, the thermal insulation box body having an opening that is formed at a front side of the thermal insulation box body and that is covered by a door, and a first storage compartment configured to store a stored object, a temperature of the first storage compartment being set to a temperature higher than a temperature of another storage compartment of the plurality of storage compartments, another storage compartment being adjacent to the first storage compartment, a cooler chamber provided behind the first storage compartment, a cooler being disposed in the cooler chamber, a first vacuum thermal insulator disposed between the first storage compartment and the cooler chamber, and a return air passage configured to allow the first storage compartment and the cooler chamber to communicate with each other, cold air returning to the cooler chamber flowing through the return air passage, are provided in the thermal insulation box body. When the thermal insulation box body is viewed in a front view, the first vacuum thermal insulator is disposed to overlap with a portion of the cooler, the return air passage is provided to be adjacent to the first vacuum thermal insulator in a state of overlapping with the cooler without overlapping with the first vacuum thermal insulator, and an outlet of the return air passage for the cold air is disposed at a position that overlaps with the cooler or at a position below the cooler.

Description

refrigerator

The present disclosure relates to a refrigerator provided with a vacuum heat insulating material.

As for refrigerators, some refrigerators have a storage room set to a higher temperature than other surrounding rooms (for example, refer to Patent Document 1). Patent Document 1 discloses a refrigerator provided with a refrigerator compartment, an ice-making compartment, a vegetable compartment and a freezer compartment sequentially from above. When comparing the number of times of door opening and closing or the opening time of the door between the vegetable compartment and the freezer, although there are individual differences, generally the vegetable compartment has a higher number of opening and closing doors and a longer door opening time. Therefore, in Patent Document 1, the convenience of the refrigerator is improved by arranging the vegetable compartment above the freezer compartment. However, since in such a refrigerator, the ice-making compartment and the freezer compartment belonging to the space of the temperature zone of negative temperature are arranged above and below the vegetable compartment of the space belonging to the temperature zone of positive temperature, the cooler will be arranged on the vegetable compartment. At the rear of the vegetable room, the space above and below the vegetable room is cooled to a temperature zone of negative temperature. In the refrigerator of Patent Document 1, in order to prevent the vegetable compartment from being overcooled, a vacuum heat insulating material having higher heat insulating performance (that is, a lower thermal conductivity) than a foam heat insulating material is provided on the back wall of the vegetable room. In addition, the refrigerator of Patent Document 1 has a plurality of air passages that communicate the cooler room in which the cooler is arranged with a storage room such as a vegetable room. Things are cooled by air-conditioning. In the refrigerator of Patent Document 1, a vacuum heat insulating material is provided on the back wall of the vegetable compartment except for the left and right ends, and the entire cooler is covered with the vacuum heat insulating material when viewed from the front. [Prior Art Literature] [Patent Document]

[Patent Document 1] International Publication No. 2018/13115

[Problem to be Solved by the Invention]

The refrigerator in Patent Document 1 is provided with a return air path for the cold air that communicates between the vegetable compartment and the cooler compartment, and the cold air heated in the vegetable compartment returns to the cooler compartment through the return air duct and is cooled again by the cooler. . Therefore, the outlet on the side of the cooler chamber in the return air path is arranged in such a manner that cold air returning from the previous cooler chamber passes through the cooler. In the refrigerator of patent document 1, the inlet of a return air path is provided beside the vacuum heat insulating material provided so that the whole cooler may be covered when viewed from the front. Therefore, in the refrigerator of Patent Document 1, when the outlet of the return air passage is arranged so that cold air passes through the cooler, the return air passage extends laterally from the inlet to the cooler when viewed from the front. mode settings. Also, in this case, the part overlapping with the vacuum heat insulating material in the return air passage is arranged behind the vacuum heat insulating material so as to bypass the vacuum heat insulating material when viewed from the front, so that the shape of the return air passage becomes It is complicated, and it is necessary to secure a space for providing a return air path behind the vacuum insulation material on the back wall of the vegetable compartment. Therefore, in the refrigerator of Patent Document 1, if the return air path is provided in such a way that the cold air flowing back from the vegetable compartment to the cooler compartment passes through the cooler, the thickness of the back wall of the vegetable compartment becomes thicker, and the storage space becomes larger. reduce.

The present disclosure is intended to solve the above-mentioned problems, and an object thereof is to provide a refrigerator which is provided with a return air path for returning cold air through the cooler without reducing the storage space. [Means to solve the problem]

The refrigerator disclosed in this disclosure is equipped with a heat-insulating box body. The aforementioned heat-insulating box system has an opening covered with a door on the front surface, and a plurality of storage rooms are formed inside. The interior of the aforementioned heat-insulating box body is provided with: a first The storage room is set at a higher temperature than the other adjacent storage rooms and stores the stored items; the cooler room is located behind the first storage room and is equipped with a cooler; the first vacuum insulation material is Arranged between the aforementioned first storage room and the aforementioned cooler room; the return air path connects the aforementioned first storage room with the aforementioned cooler room, and supplies the circulation of cold air returning to the aforementioned cooler room; when viewing the aforementioned cooler room from the front In the case of a heat-insulating box, the first vacuum heat insulating material is arranged so as to overlap a part of the cooler, and the return air path is arranged not to overlap the first vacuum heat insulating material but to overlap the cooler It is arranged adjacent to the aforementioned first vacuum heat insulating material in such a way. [Efficacy of the invention]

In the refrigerator disclosed in this disclosure, when viewing the heat insulation box from the front, since the return air path does not overlap with the first vacuum heat insulation material, there is no need to set up a space for the return air path behind the vacuum heat insulation material , the reduction of the storage space of the first storage room can be avoided. In addition, in the refrigerator of the present disclosure, when the heat insulation box is viewed from the front, since the return air passage is provided adjacent to the first vacuum heat insulation material in a manner that overlaps with the cooler, it can be used less than conventionally. When the return air path is extended in the horizontal direction, a return air path for returning cold air to pass through the cooler is provided. Therefore, according to the present disclosure, it is possible to provide a return air path for returning cold air through the cooler without reducing the storage space.

Embodiments of the present disclosure will be described below based on the drawings. In addition, in each drawing, the thing attached|subjected to the same code|symbol is the same thing or the thing equivalent to it, and this is common throughout the whole text of this patent specification. In addition, the forms of the constituent elements shown in the entirety of this patent specification are just examples, and are not limited to these descriptions.

Implementation Type 1 Fig. 1 is a perspective view showing the appearance of a refrigerator 1 according to Embodiment 1 of the present disclosure. FIG. 2 is a schematic front view showing the interior of the refrigerator 1 in FIG. 1 . FIG. 3 is an explanatory diagram showing a longitudinal section in the front-back direction of the refrigerator 1 in FIG. 1 . FIG. 4 is a diagram showing a refrigerant circuit of the refrigerator in FIG. 1 . The schematic structure of the refrigerator 1 is demonstrated based on FIGS. 1-4.

As shown in FIG. 1 , the refrigerator 1 is equipped with a heat-insulating box 19 , and as shown in FIG. 2 , a plurality of storage rooms are arranged inside the heat-insulating box 19 . In the example shown in FIG. 2, the heat insulation box 19 has a vertically long rectangular parallelepiped shape. In addition, in the example shown in Fig. 2, in the interior of heat insulation box body 19, refrigerating chamber 2, ice making chamber 3, temperature switching chamber 4, freezing chamber 6 and vegetable chamber 5 are formed, and from above the refrigerating chamber 2. The sequence arrangement of the ice making room 3, the temperature switching room 4, the vegetable room 5, and the freezing room 6. The ice making chamber 3 and the temperature switching chamber 4 are arranged adjacent to each other along the lateral direction, the temperature switching chamber 4 is arranged on the left side, and the ice making chamber 3 is arranged on the right side of the temperature switching chamber 4 . Moreover, the inside of the heat insulation box 19 is provided with the partition which partitions off between storage rooms. In addition, the number of storage rooms of the refrigerator 1, the kind of storage rooms, that is, the preset temperature, and the arrangement of the storage rooms are not limited to the above. For example, the refrigerator 1 may also be configured with a micro-freezer (a storage room with a set temperature of, for example, 0 to 3° C.). In addition, the temperature switching chamber 4 may be arranged on the right side, and the ice making chamber 3 may be arranged on the left side of the temperature switching chamber 4 .

As shown in FIG. 2, the heat insulation box 19 has a top surface 19a, a bottom surface 19b, a right side 19c, a left side 19d, and a back surface 19f (see FIG. 3). The front surface of the heat insulation box 19 has an opening. As shown in FIG. 1, the refrigerator 1 is equipped with the doors 2a, 3a, 4a, 5a, and 6a which open and close each storage room. In the example shown in Fig. 2 and Fig. 3, the top surface 19a of the heat insulation box 19 constitutes the top wall of the refrigerator compartment 2 arranged at the top, and the bottom surface 19b of the heat insulation box 19 constitutes the top wall arranged at the top. The bottom wall portion of the freezing chamber 6 below. In addition, in the example shown in Fig. 2 and Fig. 3, the left side part 19d of heat insulation box body 19 constitutes the left side wall part of refrigerator compartment 2, temperature switching chamber 4, vegetable compartment 5 and freezer compartment 6, and the heat insulation box body The right side part 19c of 19 is the right wall part which comprises the refrigerator compartment 2, the ice making compartment 3, the vegetable compartment 5, and the freezer compartment 6.

As shown in FIG. 3 , the refrigerator 1 includes a cooler 14 for cooling a plurality of storage compartments. As shown in FIG. 4 , refrigerator 1 has refrigerant circuit 7 including cooler 14 . In the example shown in FIG. 4 , the refrigerant circuit 7 is composed of a compressor 8 for compressing the refrigerant, an air-cooling condenser 9 for exchanging heat between the surrounding air and the refrigerant, and a condenser 10 installed in the wall of the heat insulation box 19. , an anti-condensation pipe 11 , a dryer 12 for removing moisture and foreign matter from the refrigerant, a decompression device 13 for decompressing the refrigerant, and a cooler 14 are connected by piping. The anti-condensation pipe 11 is arranged around each storage room on the front surface of the refrigerator 1 . In addition, the configuration of the refrigerant circuit 7 is not limited to the above configuration.

As shown in FIG. 3 , an air path for cold air to pass is provided inside the heat insulation box 19 . Moreover, as shown in FIG. 2 , the refrigerator 1 is provided with an air blower 15 which is arranged above the cooler in the air passage and circulates cool air in the refrigerator 1 . Moreover, as shown in FIG. 3, the refrigerator 1 is provided with the air volume adjustment apparatus 18a, 18b, and 18c which adjust the air volume of the cool air supplied to each store room.

The air path is branched above the cooler 14 into a plurality of outlet air paths, and the cold air cooled by the cooler 14 and discharged from the blower 15 flows into each branched air path. The blowing air passage 27 communicating with the refrigerator compartment 2 is provided on the foam insulation material provided on the back side of the refrigerator compartment 2 , and part of the cold air from the cooler 14 is supplied to the refrigerator compartment 2 through the blowing air passage 27 . An air volume adjusting device 18a for adjusting the air volume of the cool air supplied to the refrigerator compartment 2 is disposed on the blowing air passage 27 . The electronic components constituting each of the air volume adjustment devices 18 a , 18 b , and 18 c are housed in the back wall of the storage room above the vegetable room 5 . With such a configuration, it is not necessary to provide an extra space behind the vegetable compartment 5, and a large-capacity vegetable compartment 5 can be provided.

Moreover, the machine room 51 is formed in the lower part of the back side of the refrigerator 1 by denting the lower part of the back part 19f forward in the heat insulation box 19. As shown in FIG. In addition, the insulated box 19 has a vegetable compartment rear wall 31 disposed between the cooler 14 and the vegetable compartment 5, and a cooling system as a space for the cooler 14 is formed on the rear side of the vegetable compartment rear wall 31. Device chamber 52. The cooler chamber 52 communicates with the air passage. In addition, in the cooler chamber 52 , an anti-frost heater 47 (see FIG. 16 described later) and a drip pan 66 for receiving melted water from the cooler 14 are provided below the cooler 14 .

As shown by a solid line arrow in FIG. 4 , in the refrigerant circuit 7 , the refrigerant discharged from the compressor 8 is supplied to the air-cooling condenser 9 provided in the machine room 51 . And, the refrigerant flowing through the air-cooled condenser 9 flows through the condenser 10 provided inside the urethane of the heat insulating box 19 (see FIG. 3 ). The refrigerant flowing through the condenser 10 is condensed by the condensation process while flowing through the anti-condensation pipe 11 , which is arranged around each storage room on the front surface of the refrigerator 1 . The refrigerant flowing through the anti-condensation pipe 11 is supplied to the decompression device 13 after passing through the dryer 12 and depressurized. The refrigerant decompressed by decompression device 13 is supplied to cooler 14 . The refrigerant supplied to the cooler 14 evaporates in the cooler 14 and exchanges heat with cold air forced to circulate inside 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 after the heat exchange through the cooler 14 absorbs heat and is vaporized and returns to the compressor 8 .

As shown by the dotted arrows in Fig. 4, the cold air system generated by cooler 14 is supplied to each storage room through the air passage by blower fan 15, and after cooling the inside of each storage room and storage items such as food, it returns to the storage room again. It goes to the cooler chamber 52 (refer FIG. 3 ), and is cooled by the cooler 14 .

The air volume adjustment devices 18a, 18b, and 18c shown in FIG. 3 are each composed of electronic components such as dampers that adjust the opening and closing of the air passage. In the example shown in FIG. 3 , above the cooler 14 and on the downstream side of the blower 15 in the air path, three air volume adjustment devices 18 a , 18 b and 18 c are provided. The air volume supplied to the refrigerator compartment 2 is adjusted by the air volume adjustment device 18a, the air volume supplied to the temperature switching chamber 4 is adjusted by the air volume adjustment device 18b, and the air volume supplied to the vegetable compartment 5 is adjusted by the air volume adjustment device 18c. Adjustment. The detailed composition of the wind path will be described in detail later.

As shown in Figure 3, the refrigerator 1 is equipped with a plurality of temperature sensors 16a, 16b, 16c and 16d arranged in the storage room, and each temperature sensor is for the temperature of the air in the storage room or the temperature of the stored goods. to detect. In the example shown in Figure 3, the temperature sensor 16a is arranged in the refrigerator compartment 2, the temperature sensor 16b is arranged in the temperature switching chamber 4, the temperature sensor 16c is arranged in the vegetable compartment 5, and the temperature sensor 16b is arranged in the vegetable compartment 5. 16d is arranged in the freezer compartment 6 . In addition, although not shown, a temperature sensor is also installed in the ice making compartment 3 .

Moreover, refrigerator 1 is equipped with the control part 17 which performs various controls of refrigerator 1. As shown in FIG. The control part 17 is provided, for example in the upper part of the back part in the heat insulation box 19. As shown in FIG. The control unit 17 is composed of a control board, a microcomputer, electronic components, and the like arranged on the control board. The temperature information detected by each of the above-mentioned plurality of temperature sensors is input to the control unit 17 . The control part 17 operates each air volume adjustment device 18a, 18b, and 18c according to the input temperature information. Thereby, according to the temperature detected by the temperature sensors 16a, 16b, 16c and 16d, the air volume to each storage room is adjusted by the air volume adjustment devices 18a, 18b and 18c, so that each storage room is kept at an appropriate temperature . The control unit 17 also controls the frequency of the compressor 8 and the opening of the pressure reducing device 13 shown in FIG. 4 .

As shown in Figure 2, the refrigerator 1 is provided with a storage room (for example, a freezer 6 and an ice-making room 3, etc.) etc.); the freezing temperature zone is a negative temperature zone, and the refrigerated temperature zone is a positive temperature zone. And, in the example shown in Fig. 2 and Fig. 3, by disposing freezer compartment 6 on the lowermost side of refrigerator 1, and the vegetable compartment 5 that picks and places more times than freezer compartment 6 is arranged in freezer compartment 6 above, in order to improve the convenience. In addition, in the example shown in FIG. 2 and FIG. 3 , the vegetable compartment 5 in the refrigerating temperature zone is arranged adjacent to the freezer compartment 6 and the ice making compartment 3 in the freezing temperature zone in the vertical direction of the refrigerator 1 . In order to ensure the heat insulation property between each storage room, the partition system between each storage room is provided with the vacuum heat insulating material (not shown). In addition, in the example shown in FIG. 2 and FIG. 3 , in order to cool both the freezer compartment 6 and the ice-making compartment 3 in the freezing temperature zone, the vegetable compartment 5 arranged between the freezer compartment 6 and the ice-making compartment 3 A cooler chamber 52 is provided at the rear. Therefore, a vacuum heat insulating material 39 (refer to FIG. 9 described later) is also provided on the vegetable compartment rear wall portion 31 between the cooler compartment 52 and the vegetable compartment 5 in the refrigerating temperature zone, so that the cooler 14 and the vegetable compartment 5 heat insulation. Hereinafter, the vacuum heat insulating material 39 arrange|positioned between the cooler 14 and the vegetable compartment 5 may be called a 1st vacuum heat insulating material. A more detailed arrangement of the first vacuum heat insulating material will be described in detail later.

In the refrigerator 1 shown in FIG. 3 , in consideration of the ease of taking and placing of each storage room and the balance of the internal volumes between the storage rooms, the floor surface 2 b of the refrigerator room 2 as the uppermost storage room from the floor of the room is The distance L between them is preferably set between 954 mm and 994 mm.

In addition, in the example shown in FIG. 3 , the cooler chamber 52 in which the cooler 14 is disposed is mainly located behind the vegetable chamber 5, and also extends to the rear of the ice making chamber 3 and the lower part of the temperature switching chamber 4 and the freezing chamber. Chamber 6 upper rear. And the lower end 14b of the cooler 14 is positioned below the height F of the floor surface of the vegetable compartment 5 in the vertical direction in the cooler compartment 52 . As shown in FIG. 3, when the lower end 14b of the cooler 14 is positioned below the floor height F of the vegetable compartment 5, since a larger space is secured above the cooler 14, it is arranged in this space. The flexibility of the size selection of the air blower 15 becomes high.

FIG. 5 is an explanatory diagram showing a section of a part of the wall portion 20 of the heat insulating box 19 of the refrigerator 1 in FIG. 1 . As shown in Figure 5, the wall portion 20 of heat insulation box body 19 is made of the sheet metal 21 that constitutes the outer wall, the inner case 22 that constitutes each storage room wall and the heat insulating material 23 between the sheet metal 21 and the inner case 22 and constitutes, and The amount of heat intrusion from the outside is suppressed. Here, the heat insulating material 23 has a structure including the vacuum heat insulating material 24, and by attaching the vacuum heat insulating material 24 to the sheet metal 21 of the outer wall, the amount of heat intrusion can be significantly reduced. The vacuum heat insulating material 24 arrange|positioned in the wall part 20 can be comprised with the vacuum heat insulating material of one rectangular plate shape, for example.

In addition, the heat insulating material 23 is comprised mainly from the urethane foam material except the vacuum heat insulating material 24. As shown in FIG. The heat insulator 23 is configured to include various internal components arranged in a space to be enclosed by the urethane foam material, and the internal components are fixed by the urethane foam material. Here, the internal member refers to, for example, a reinforcing member for correcting deformation of the refrigerator 1, parts of the refrigerant circuit 7, parts of electrical wiring, and the like.

FIG. 6 is an explanatory diagram showing a section of a part of the wall portion 20 of the left side surface 19d of the heat insulating box 19 of the refrigerator 1 of FIG. 1 . As shown in Figure 6, the heat insulating material 23 of the wall 20 of the left side surface 19d in the heat insulating box 19 of the refrigerator 1 is set to the following structure: by the urethane foam material, the Various internal components in the space of the urethane foam are fixed. Here, on the wall portion 20 of the left side surface 19d of the heat insulation box 19, in addition to the above-mentioned reinforcing member, parts of the refrigerant circuit 7, and parts of electrical wiring, etc., the door of the pull-out storage room is also arranged. (for example, the door 5a shown in FIG. 1 ) is supported by a support 25 as an internal member. The support member 25 has a rail structure that receives the frame structure of the door of the pull-out type storage room, and the heat insulating material 23 that fixes the support member 25 is formed in a shape corresponding to the rail structure so that The track structure of the support 25 is fixed.

In addition, the structure of the wall part 20 of the heat insulation box 19 is not limited to the said structure. FIG. 7 is an explanatory view showing another example of a section of a part of the wall portion 20 of the heat insulating box 19 in FIG. 5 . FIG. 8 is an explanatory diagram showing another example of a section of a part of the wall portion 20 of the heat insulating box 19 in FIG. 5 .

As shown in FIG. 7 , the vacuum heat insulating material 24 of the heat insulating material 23 may be arranged at a middle position between the sheet metal 21 of the outer wall and the wall surface of the inner box 22 using a spacer 26 depending on the installation location. Alternatively, as shown in FIG. 8 , the vacuum heat insulating material 24 of the heat insulating material 23 may be attached to the wall surface of the inner box 22 depending on the installation place. Thus, the vacuum heat insulating material 24 of the heat insulating material 23 can be installed in the wall part 20 by any method shown in FIG. 5, FIG. 6, or FIG. However, the vacuum heat insulating material 24 is provided so as not to interfere with the above-mentioned internal components in order to avoid damage.

With respect to the entire surface area of the outer wall including the heat insulating box 19 of the refrigerator 1 and the doors 2a, 3a, 4a, 5a, and 6a (see FIG. The covered area of 24 is preferably 40% or more. In addition, the foam density of the urethane foam sealed around these vacuum heat insulating materials 24 is preferably 60 kg/cm ³ or more. In addition, the flexural elastic modulus of the urethane foam material is preferably 15.0 MPa or more. By constituting the urethane foam material in this way, the strength of the heat insulation box 19 of the refrigerator 1 can be secured.

As described above, by including the vacuum heat insulating material 24 with higher heat insulating performance than the foam heat insulating material in the heat insulating material 23 of the heat insulating box 19, even if the outer wall of the refrigerator 1 and the inner box 22 Even if the distance is narrowed, that is, the heat insulation thickness is reduced, the same heat insulation performance can be ensured. Therefore, compared with the case where the vacuum heat insulating material 24 is not provided, when the vacuum heat insulating material 24 is provided on the wall portion 20 of the heat insulating box 19, the thickness of the wall portion 20 can be reduced to make the refrigerator 1 increased internal volume.

Fig. 9 is a diagram showing a front-back longitudinal section of the periphery of the vegetable compartment 5 of the refrigerator 1 in Fig. 1 . FIG. 10 is an explanatory diagram showing a longitudinal section of another example of the top wall portion 32 in the vegetable compartment 5 of FIG. 9 . FIG. 11 is an explanatory diagram showing a longitudinal section of another example of the top wall portion 32 in the vegetable compartment 5 of FIG. 9 . FIG. 12 is a diagram showing another example of the vegetable compartment rear wall portion 31 in FIG. 9 . FIG. 13 is a diagram showing another example of the vegetable compartment rear wall portion 31 in FIG. 9 . The several wall part which comprises the vegetable compartment 5 is demonstrated based on FIGS. 9-13.

As shown in FIG. 9 , the top wall portion 32 of the vegetable compartment 5 serves as a partition between the vegetable compartment 5 and the ice making compartment 3 and the temperature switching compartment 4 shown in FIG. 3 . The top surface wall portion 32 is a heat insulating wall, and suppresses heat transfer between the storage room set at a lower temperature than the vegetable room 5 and the vegetable room 5 . The top wall portion 32 is made of an injection molded material to form an outer shell, and a vacuum heat insulating material 33 and a urethane foam material 34 to form an inside. In the ceiling wall part 32, the vacuum heat insulating material 33 is provided in the store room side lower than the vegetable compartment 5, ie, the upper side.

As shown in FIG. 9 , the bottom wall portion 35 of the vegetable compartment 5 serves as a partition between the vegetable compartment 5 and the freezing compartment 6 shown in FIG. 3 . The bottom wall portion 35 is a heat insulating wall, and suppresses heat transfer between the storage compartment set at a lower temperature than the vegetable compartment 5 and the vegetable compartment 5 . Bottom wall portion 35 is an outer wall made of an injection molded material similarly to top wall portion 32 , and the inside is made of vacuum heat insulating material 36 and urethane foam material 37 . In the bottom wall part 35, the vacuum heat insulating material 36 is provided in the storage room side lower than the vegetable compartment 5, ie, the lower side.

The thickness of the urethane foam material 34 in the top wall portion 32 of the vegetable compartment 5 and the thickness of the urethane foam material in the bottom wall portion 35 of the vegetable compartment 5 should be adjusted in consideration of fluidity and uneven manufacture during manufacture. The thickness of the foam material 37 is preferably more than 7 mm. In addition, each of the vacuum heat insulating material 33 of the top wall part 32 of the vegetable compartment 5 and the vacuum heat insulating material 36 of the bottom wall part 35 of the vegetable compartment 5 is constituted by one rectangular plate-shaped vacuum heat insulating material.

In addition, the arrangement|positioning of the vacuum heat insulating material 33 in the ceiling surface wall part 32 of the vegetable compartment 5 is not limited to the said thing. In the urethane injection process in the manufacturing process of the refrigerator 1, the vacuum heat insulating materials 33, 36 arranged on the top wall 32 and the bottom wall 35 of the vegetable compartment 5, respectively, may be filled with amine groups. Formic acid ester foam material 34,37 comes the composition of wrapping.

For example, as shown in FIG. 10 , by ensuring the viscosity of the urethane foam material 34 or the width of the flow path, the vacuum heat insulating material 33 can be disposed in the middle of the upper and lower outer wall surfaces in the top wall portion 32 . . In this case, since the whole of the vacuum heat insulating material 33 is covered with the urethane foam material 34, deterioration of the vacuum heat insulating material 33 can be suppressed further. Or, for example, as shown in FIG. 11, the vacuum heat insulating material 33 may be provided in the top surface wall part 32 in the vegetable compartment 5 side of the upper and lower outer wall surface, ie, the lower side. In this case, the vacuum heat insulating material 33 can increase the coating rate with respect to the inner wall surface of the vegetable compartment 5, and can suppress the heat intrusion amount.

As described above, in the refrigerator 1, the top wall portion 32 that separates the vegetable compartment 5 from the lower-temperature storage compartment adjacent to the vegetable compartment (in this embodiment, the freezer compartment 6, the ice making compartment 3, etc.) And the bottom wall part 35 has the vacuum heat insulating materials 33 and 36 . With such a structure, the covering area of the vacuum heat insulating materials 33 and 36 in the vegetable compartment 5 is increased as much as possible, so the inflow of cold and heat from the periphery of the vegetable compartment 5 into the vegetable compartment 5 can be prevented, and the vegetable compartment can be avoided. 5 is too cold inside.

As shown in FIG. 9 , among the plurality of walls constituting the vegetable compartment 5 , the vegetable compartment rear wall 31 is a heat insulating wall that separates the vegetable compartment 5 from the cooler compartment 52 behind it. The vegetable compartment back wall portion 31 has heat insulating wall outer walls 38 and 42 , a vacuum heat insulating material 39 , and a foam heat insulating material 40 provided to cover the vacuum heat insulating material 39 . That is, the vegetable compartment back wall part 31 is set as the structure provided with the vacuum heat insulating material 39 between the inner wall of the vegetable compartment 5, and the cooler 14. As shown in FIG. The vacuum heat insulating material 39 can be comprised, for example with one sheet of rectangular and plate-shaped vacuum heat insulating materials.

The thickness of the foam heat insulating material 40 of the vegetable compartment back wall portion 31 is based on the limit thickness that can be formed, and if there are other additional functions, it is set as the one with the required heat insulation thickness. When PS-FO is used as the material of the foam heat insulating material 40, for example, when the expansion ratio is 40 times, it is preferable to configure the thickness to be at least 5 mm or more.

The foam heat insulating material 40 of the vegetable compartment rear wall part 31 is provided with the blowing air passage 41 of the cold air to the freezer compartment 6, and the blowing air passage 41 communicates the cooler chamber 52 with the freezer compartment 6 (refer to FIG. 3 ). . In the example shown in FIG. 9 , the front and back arrangement of the blowing air passage 41 is the cooler 14 , the outer wall of the heat insulating wall 42 , the foam heat insulating material 40 constituting the blowing air passage 41 , and the vacuum heat insulating material in order from the rear. 39. The outer wall 38 of the heat insulating wall constituting the inner wall of the vegetable compartment 5 .

In addition, the structure of the vegetable compartment back wall part 31 is not limited to the said structure. For example, as shown in FIG. 12 , in order to make the heat insulation effect more effective, the vacuum heat insulation material 39 of the vegetable compartment back wall 31 may also be attached to the inner wall of the heat insulation wall outer wall 42 on the side of the cooler 14 . That is, the vacuum heat insulating material 39 is arrange|positioned on the cooler 14 side in the vegetable compartment back wall part 31. As shown in FIG. However, in this case, the dimension in the height direction of the vacuum heat insulating material 39 is slightly reduced due to the limitation of the position or the size of the outlet of the cool air discharged from the blower 15 (see FIG. 2 ). Moreover, in this case, since the back surface of the vacuum heat insulating material 39 is not covered with the foam heat insulating material 40, there exists a possibility that the vacuum heat insulating material 39 may deteriorate. As shown in FIG. 13 , by providing a foam heat insulating material 40 between the vacuum heat insulating material 39 and the inner wall of the heat insulating wall outer wall 42 on the cooler 14 side, the vacuum heat insulating material can be covered with the foam heat insulating material 40 . The back surface of the material 39 can suppress deterioration of the vacuum heat insulating material 39 compared to the case of FIG. 13 .

Although in FIG. 9, among the plurality of wall portions constituting the vegetable compartment 5, the case where the top wall portion 32, the bottom wall portion 35, and the vegetable compartment rear wall portion 31 include vacuum heat insulating materials 33, 36, and 39 has been described. However, the left and right side walls of the vegetable compartment 5 and the door 5a of the vegetable compartment 5 may also have vacuum heat insulating materials. In addition, each vacuum heat insulating material may be comprised with one plate-shaped rectangular vacuum heat insulating material. As in the vegetable compartment 5 of the present disclosure, if it is adjacent to a storage room with a lower temperature than the vegetable compartment 5 and the cooler 14 is arranged behind it, there is a possibility that cold and heat may flow in and cause the interior of the vegetable compartment 5 to be overcooled. However, as described above, by setting each of the plurality of wall portions constituting the vegetable compartment 5 to have a rectangular vacuum heat insulating material 24, 33, 36, 39, it is possible to prevent the passage from the periphery of the vegetable compartment 5 toward the inside of the vegetable compartment 5. The inflow of hot and cold can avoid overcooling in the vegetable compartment 5 . On the other hand, it is also possible to prevent heat dissipation from the inside of the vegetable compartment 5 to the periphery of the refrigerator 1 as the outside of the vegetable compartment 5, so that the interior of the vegetable compartment 5 can be maintained at a set temperature with better thermal efficiency.

Fig. 14 is a schematic diagram showing the section X-X of the refrigerator 1 in Fig. 2 . FIG. 15 is a schematic front view showing the lower part of the refrigerator 1 in FIG. 2 . FIG. 16 is a schematic diagram showing a section A-A of the refrigerator 1 in FIG. 2 . FIG. 17 is a schematic diagram showing the blowing air path 41 of the cold air to the freezing chamber 6 and the return air path 70 of the cold air from the freezing chamber 6 in FIG. 16 . FIG. 18 is a schematic diagram showing a section B-B of the refrigerator 1 in FIG. 2 . FIG. 19 is a schematic diagram showing the return air path 80 of the cold air from the vegetable compartment 5 in FIG. 18 . The hollow arrows in the figure indicate the direction of cold air flow. The configuration of the air passage and the positional relationship between the air passage and the vacuum heat insulating material 39 will be described based on FIGS. 14 to 19 .

As shown in Fig. 14 and Fig. 15, in addition to being provided with the blowing air path 27 of the cold air to the refrigerator compartment 2 shown in Fig. The blowing air path 30 of the cold air to the vegetable compartment 5, the blowing air path (not shown) of the cold air to the temperature switching chamber 4 and the ice making chamber 3, and the blowing air path of the cold air to the freezer compartment 6 branched by the blowing air path 27 41. In addition, inside the heat insulation box 19, there are provided a return air passage 29a for the cold air from the temperature switching chamber 4, a return air passage 28 for the cold air from the ice making compartment 3, and a return air passage 29b for the cold air from the refrigerator compartment 2. , The return air path 80 of the cool air from the vegetable compartment 5 . Moreover, as shown in FIG. 16, the inside of the heat insulation box 19 is provided with the return air path 70 of the cool air from the freezer compartment 6. As shown in FIG.

As shown in FIG. 15 , the cooling air outlet 30 to the vegetable compartment 5 is provided from a branch point downstream of the air blower 15 to the rear upper side of the vegetable compartment 5 . An air outlet 44 serving as an outlet of cold air in the outlet air duct 30 is provided on the inner wall of the vegetable compartment 5 . In the example shown in FIG. 15, the air outlet 44 is provided in the inner wall of the vegetable compartment back wall part 31. As shown in FIG. The blowing air passage 30 is equipped with an air volume adjusting device 18c, and part of the cold air cooled by the cooler 14 is blown out from the air outlet 44 to the vegetable compartment 5 by the air blower 15 through the air volume adjusting device 18c. Moreover, the air outlet 44 may be formed in the inner wall of the wall part other than the vegetable compartment back wall part 31 among the wall parts which comprise the vegetable compartment 5. As shown in FIG. In addition, in the example shown in FIG. 15 , the blowing air duct 30 is configured to directly communicate with the cooler 14 and the vegetable compartment, and the outlet 44 is configured so that the cold air cooled by the cooler 14 directly passes through the vegetable compartment 5. within, but not particularly limited to this configuration. For example, the blowing air duct 30 may be configured to communicate with the vegetable compartment 5 through another storage compartment (for example, the refrigerator compartment 2 ) from the cooler 14 . In this case, the blower port 44 supplies the cold air which cooled by the cooler 14 and warmed by cooling the stored goods in another storage room (refrigerator room 2) to the vegetable room 5. As shown in FIG.

As shown in Fig. 15 and Fig. 16, the blowing air path 41 of the cold air to the freezer compartment 6 is located at the branch point from the downstream of the air blower 15 to the rear of the vegetable compartment 5 and the vegetable compartment that separates the freezer compartment 6 from the vegetable compartment 5. rear of the bottom wall portion 35. In addition, as shown in Fig. 16 and Fig. 17, at the rear of the lower part of the cold air blowing passage 41 to the freezing chamber 6, there is a return air flow of the cold air from the freezing chamber 6 that communicates the freezing chamber 6 with the cooler chamber 52. Road 70.

In addition, as shown in Figure 15, the return air path 29a of the cold air from the temperature switching chamber 4 is located at the rear of the temperature switching chamber 4 and the rear of the vegetable compartment 5, and the temperature switching chamber 4 and the cooler chamber 52 (refer to the figure) 14) Connected. In addition, the return air path 28 of the cold air from the ice making compartment 3 is arranged in the rear of the ice making compartment 3 and the rear of the vegetable compartment 5 in the vertical direction, and makes the ice making compartment 3 and the cooler compartment 52 (refer to FIG. 14 ) connected.

In addition, as shown in FIGS. 15 and 18 , the return air path 80 for cold air from the vegetable compartment 5 is provided behind the vegetable compartment 5 and communicates the vegetable compartment 5 with the cooler compartment 52 (see FIG. 14 ). As shown in FIG. 15 , the return air duct 80 has a vertically elongated shape extending in the vertical direction when viewed from the front. Furthermore, as shown in FIG. 18 , a return port 45 serving as an inlet of cold air is provided on the front side of the upper end of the return air passage 80 , and an outlet 81 of cold air is provided on the back side of the lower end of the return air passage 80 . The return air passage 80 is provided on the back wall portion 31 of the vegetable compartment, and the return port 45 is provided on the inner wall of the back wall portion 31 of the vegetable compartment.

In the example shown in FIG. 15 , when viewed from the front, in the center of the left-right direction behind the vegetable compartment 5, there are arranged a blowing air passage 41 for cold air to the freezer compartment 6 and a return air passage 70 for cold air from the freezer compartment 6. (Refer to Figure 16). And on the right side or left side of the blowing air passage 41, the blowing air passage 30 for the cold air to the vegetable compartment 5, the return air passage 29a for the cold air from the temperature switching chamber 4, and the cooling air passage 29a from the cooling air passage 41 are arranged approximately in parallel with the blowing air passage 41. Return air path 28 of cold air from ice compartment 3 and return air path 80 of cold air from vegetable compartment 5 . On the left side of the air passage 41 for blowing cold air to the freezer compartment 6, the air passage 30 for blowing the cold air to the vegetable compartment 5, the return air passage 29a for the cold air from the temperature switching chamber 4, and the air passage 29a for the cold air from the refrigerator compartment 2 are arranged. The return air path 29b of cold air. Among these air passages, return air passage 29b of cold air from refrigerator compartment 2 is arranged on the leftmost side. In addition, when viewed from the front, the return air passage 28 for the cold air from the ice making compartment 3 and the return air passage 80 for the cold air from the vegetable compartment 5 are disposed on the right side of the air passage 41 for blowing cold air to the freezer compartment 6. . The return air path 80 of cold air from the vegetable compartment 5 is arranged on the far right. The return air path 29b of cold air from the refrigerator compartment 2 is connected to the drip pan 66 from the lower left side of the cooler 14 in the cooler compartment 52 (see FIG. 16 ).

As shown in Figure 14, the above-mentioned air passages, namely the blowing air passages 30, 41 and the return air passages 29a, 28, 80, are formed on the vegetable compartment rear wall portion 31 between the vegetable compartment 5 and the cooler compartment 52. . In addition, in the vegetable compartment rear wall 31 in FIG. 14 , the space formed between the blowing air passage 41 and the return air passage 28 is a thickened portion for stabilizing the shape of the vegetable compartment rear wall 31 .

As shown in FIG. 15, the vacuum heat insulating material 39 of the vegetable compartment back wall part 31 is arrange|positioned so that it may overlap with some coolers 14 when viewed from the front. In addition, when viewed from the front, the return air path 80 of the cold air from the vegetable compartment 5 does not overlap with the vacuum heat insulating material 39, but overlaps with the part of the cooler 14 that does not overlap with the vacuum heat insulating material 39. It is provided adjacent to the vacuum heat insulating material 39 . In the example shown in FIG. 15 , most of the left side in the front surface of the cooler 14 is covered by a rectangular vacuum insulation material 39 from the upper end to the lower end, and the right side part in the front surface of the cooler 14 is covered by a The structure covered by the return air path 80 of cold air from the vegetable compartment 5 extending in the vertical direction.

Preferably, when viewed from the front, almost the entirety of the cooler 14 is covered by a rectangular vacuum insulation material 39 and the space of the return air passage 80 for the cold air heated in the vegetable compartment 5 to circulate. With such a configuration, the effect of suppressing the inflow of cold and heat from the cooler 14 into the vegetable compartment 5 can be maintained, and at the same time, compared with the conventional configuration in which the entire front surface of the cooler 14 is covered only with the vacuum heat insulating material 39 Therefore, the width of the vacuum heat insulating material 39 can be made smaller than before, and cost can be reduced. In addition, by suppressing the inflow of heat and cold from cooler 14 into vegetable compartment 5, the temperature of cooler 14 can be prevented from rising, and the temperature of vegetable compartment rear wall portion 31 can also be prevented from falling. As a result, dew condensation and frost formation in the vegetable compartment 5 can be prevented.

Here, the entire front surface of the cooler 14 may not be completely covered by the vacuum heat insulating material 39 and the return air path 80 . When the return air passage 80 is arranged beside the vacuum heat insulating material 39 , a wall portion constituting the return air passage 80 is arranged between the vacuum heat insulating material 39 and the return air passage 80 . Therefore, considering the required strength of the return air passage 80 , it is also possible to provide a wall portion having a thickness below a certain level between the return air passage 80 and the vacuum heat insulating material 39 . In addition, a heat insulating material may be contained in the wall part which comprises the return air path 80. As shown in FIG.

In addition, in the vegetable compartment rear wall 31 , a side wall vacated by reducing the width of the vacuum heat insulating material 39 is provided with a return air passage 80 for cold air from the vegetable compartment 5 . When viewed from the front, the return air path 80 is arranged in such a way that it overlaps with the part of the cooler 14 that does not overlap with the vacuum insulation material 39, so as shown in FIG. 19, the outlet 81 of the return air path 80 only needs to extend backward The amount corresponding to the thickness of the wall portion on the side of the cooler chamber 52 among the vegetable compartment rear wall portions 31 may be sufficient. Therefore, compared with the conventional configuration in which only the entire front surface of the cooler 14 is covered with the vacuum heat insulating material 39, it is not necessary to set the return air passage 80 to bypass the vacuum heat insulating material 39, or not only the rear but also Such complex configurations are extended in the horizontal direction.

In the example shown in FIG. 15, the vacuum heat insulating material 39 has a width Wv smaller than the width Wc of the cooler 14, and the left end of the vacuum heat insulating material 39 covers the cooler when viewed from the front. 14 left end. The part on the right side of the cooler 14 is not covered with the vacuum heat insulating material 39 when viewed from the front, but is covered with the return air duct 80 .

In addition, the arrangement|positioning of the vacuum heat insulating material 39 with respect to the cooler 14 is not limited to the said case. For example, the vacuum heat insulating material 39 may be arranged such that the right end of the vacuum heat insulating material 39 covers the right end of the cooler 14 when viewed from the front. For another example, it is also possible to make the vacuum insulation in such a way that the right end of the vacuum heat insulating material 39 coincides with the right end of the cooler 14 when viewed from the front, or that the left end of the vacuum heat insulating material 39 coincides with the left end of the cooler 14. One end of the heating material 39 is aligned with the end of the cooler 14 .

In the example shown in FIG. 14 and FIG. 15 , the blowing air passage 30 having the blowing outlet 44 on the inner wall of the vegetable compartment rear wall portion 31 is also set as the same as the above-mentioned return air passage 80 when viewed from the front. The structure will be repeated with the vacuum heat insulating material 39 . However, unlike the case of the return air passage 80, the outlet air passage 30 of the cool air to the vegetable compartment 5 may not overlap with the cooler 14 when viewed from the front.

As shown in FIG. 15 , any one of the blower port 44 of the cold air to the vegetable compartment 5 and the return port 45 of the cold air from the vegetable compartment 5 is provided on the inner wall of the back wall portion 31 of the vegetable compartment when viewed from the front. A position that does not overlap with the vacuum heat insulating material 39 . According to such a structure, when forming the blowing port 44 and the return port 45, it becomes unnecessary to provide the vacuum heat insulating material 39 with the special process, such as a hole or a notch, or to use a plurality of vacuum heat insulating materials. In addition, it is not necessary to provide the blowing air path 30 and the return air path 80 connected to the vegetable compartment 5 in such a complicated shape as to bypass the vacuum heat insulating material 39 .

By the way, in conventional refrigerators, the blower port of the cold air to the vegetable compartment and the return port of the cold air from the vegetable compartment are provided on the rear wall of the vegetable compartment on the outside of the vacuum insulation material when viewed from the front. Diagonal corner part. In conventional refrigerators, the vacuum insulation material is widely provided to cover the entire front surface of the cooler, so the selection of the return port that can arrange the cold air from the vegetable compartment is more limited than in the case of the present disclosure. And, in the conventional refrigerator, in the back wall of the vegetable compartment, the air outlet is provided at the upper corner, and the return port is provided at the lower corner diagonally to the cold air outlet. With such a configuration, it is difficult for the cool air blown out from the air outlet to the vegetable compartment to diffuse and descend into the return air passage from the return opening. This is because the cold air blown out from the blower port, which is lower than the temperature in the vegetable compartment, will flow downward immediately after blowing out, but will gradually heat up and rise slowly as the boxes and food in the vegetable compartment cool down. .

On the other hand, as shown in FIG. 14 , in this disclosure, the air outlet 44 and the return port 45 are provided at the same height on the inner wall of the vegetable compartment rear wall portion 31 . More specifically, when viewed from the front, the air outlet 44 is provided on the upper left side of the vacuum heat insulating material 39, and the return port 45 is provided on the upper right side of the vacuum heat insulating material 39 and connected to the cooler. 14 repeat positions.

According to such a configuration, the vacuum heat insulating material 39 can separate the air outlet 44 and the return port 45 at a distance greater than a certain amount in the left-right direction, and the return port 45 can be provided in the middle or higher than before. Upper section. Therefore, the cold air circulates throughout the vegetable compartment 5, which can improve thermal efficiency. In addition, according to the above configuration, the blowing air passage 30 and the return air passage 80 can be provided in the front-rear direction so as not to be blocked by the vacuum heat insulating material 39, and the return air passage 80 can be provided at the same position as the cooler when viewed from the front. 14, the shape of the blowing air path 30 and the return air path 80 can be made into a simple shape, and the cold air can be returned to the cooler 14 at the same time.

In addition, the installation positions of the air outlet 44 and the return port 45 are not limited to the above. For example, the cooling air outlet 44 to the vegetable compartment 5 may be provided on a wall other than the vegetable compartment rear wall 31 such as the top wall 32 of the vegetable compartment 5 among the walls constituting the vegetable compartment 5 . In addition, for example, the return port 45 of the cold air from the vegetable compartment 5 may be provided above the blower port 44 .

In addition, even if the return port 45 is set at the height of the middle or upper part of the cooler 14 when viewed from the front, it is possible to pass the cold air from the vegetable compartment 5 from the return port 45 through the return air passage 80 extending in the vertical direction. It is induced to the lowermost stage of the cooler 14 . The cold air in the cooler chamber 52 is moved upward by the blower 15 . Therefore, heat exchange between the cold air flowing back from the vegetable compartment 5 and the cooler 14 can be performed efficiently.

Furthermore, according to this configuration, the cold air blown out from the air outlet 44 to the vegetable compartment 5 first reaches the lower portion of the vegetable compartment 5 and then flows back toward the upper return port 45 . By the way, when there are multiple boxes in a storage room such as a vegetable room, in conventional refrigerators, the cold air blown out from the outlet on the upper right side of the storage room first enters the upper box, and then flows In the lower box, and then to the circulation route that flows to the backflow port on the left side of the storage room. However, when the cold air flows in this way, the cold air will contact the box and the food immediately after being blown out, and there is a possibility that the food will freeze or dry. On the other hand, in the structure of the present disclosure, the return port 45 is arranged on the upper side in the vegetable compartment 5 than in the conventional structure, so even if the blown cold air is not directly induced to the box (not shown) in the vegetable compartment 5 Shown), also can make the cold air blown out of the box evenly circulated. As a result, freezing of the food can be avoided, and since the water vapor in the box is less likely to flow out of the box, the moisture retention performance of the food is improved.

As described using FIG. 15 , the blowing air path 41 of the cold air to the freezer compartment 6 has a portion vertically arranged in the vegetable compartment rear wall 31 separating the vegetable compartment 5 from the cooler 14. And the part provided in the bottom wall part 35 of the vegetable compartment 5 which partitions the vegetable compartment 5 and the freezer compartment 6. In the blowing air passage 41 of the cold air to the freezer compartment 6, the part provided in the back wall part 31 of the vegetable compartment, that is, the part behind the vegetable compartment 5 is overlapped with the vacuum heat insulating material 39 when viewed from the front. configuration. In addition, the return air passage 29a of the cold air from the temperature switching chamber 4 and the return air passage 28 of the cold air from the ice making compartment 3 are also provided on the back wall portion 31 of the vegetable compartment so as to overlap with the vacuum heat insulating material 39 when viewed from the front. Inside. In the example shown in FIG. 14 , in the lateral direction of the refrigerator 1, the blowing air passage 41 of the cold air to the freezer compartment 6, the return air passage 29a of the cold air from the temperature switching chamber 4, and the air passage 29a of the cold air from the ice making chamber 3 The return air duct 28 is disposed behind the vacuum heat insulating material 39 . In addition, in the example shown in FIG. 14, the heat insulation material arrange|positioned behind the vegetable compartment back wall part 31 and left side rather than the cooler 14 is provided with the return air path 29b of the cold air from the refrigerator compartment 2.

As shown in FIG. 15 , the vacuum heat insulating material 39 of the vegetable compartment back wall 31 is provided across a wider range than the cooler 14 and the blowing air duct 41 in the lateral direction of the refrigerator 1 . Moreover, the vacuum heat insulating material 39 of the vegetable compartment back wall part 31 is provided in the height direction of the refrigerator 1 in the range wider than the range in which the cooler 14 is installed. In addition, it is preferable that the vacuum heat insulating material 39 of the vegetable compartment rear wall portion 31 is almost entirely formed in the portion of the vegetable compartment rear wall portion 31 of the cold air blowing air passage 41 to the freezer compartment 6 when viewed from the front. The overlapping mode is arranged from the upper end to the lower end of the vegetable compartment back wall portion 31 .

As shown in Figure 17, the return air path 70 of the cold air from the freezer compartment 6 is arranged in the vegetable compartment between the vegetable compartment 5 and the freezer compartment 6 so as to overlap with the lower part of the blowing air duct 41 shown in Figure 15 5 behind the bottom wall portion 35. As shown in FIG. 15 , in the lateral direction of the refrigerator 1, the blowing air passage 41 and the return air passage 70 (refer to FIG. 17 ) are arranged within the range where the cooler 14 is arranged, and have a width Wc or less of the cooler 14. width. In addition, as shown in FIG. 16 , the outlet of the cold air in the return air passage 70 is the same as the outlet of the return air passage 29 b (refer to FIG. 14 ) of the cold air from the refrigerator compartment 2 from between the cooler 14 in the cooler chamber 52 . The bottom is connected to the drip tray 66 .

As shown in FIG. 17 , the air duct 41 for blowing cold air to the freezer compartment 6 diverges upward and downward on the outlet side. The freezer compartment 6 is provided with a plurality of storage boxes 6b up and down. On the inner ceiling surface of the freezer compartment 6, a guide portion 6c for inducing cold air from outlets above and below the blowing air duct 41 is provided. The guide part 6c has a first guide part 6c1 and a second guide part 6c2 provided behind the first guide part 6c1. The first guide part 6c1 diverges the outlet of the blowing air passage 41 vertically, and the second guide part 6c2 is configured to separate the outlet on the lower side of the blowing air passage 41 from the inlet of the return air passage 70 . In other words, the guide part 6c serves as the guide to the blow-out side in the freezer compartment 6 and the guide from the return flow side in the freezer compartment 6 at the same time.

As shown in FIG. 17 , the cold air cooled by the cooler 14 and passed through the blowing air path 41 of the cold air to the freezer compartment 6 by the blower 15 is guided into the freezer compartment 6 by the guide part 6c of the freezer compartment 6. In the storage box 6b of a plurality of stages, the stored goods in each storage box 6b are cooled. And the cool air which cools the stored goods in each storage box 6b and warms is guided to the inlet of the return air path 70 by the guide part 6c, and enters into the return air path 70. The cold air entering the return air passage 70 passes through the return air passage 70 and returns to the lower side of the cooler 14 in the cooler chamber 52 .

As shown in FIG. 14 , the vacuum heat insulating material 39 of the vegetable compartment rear wall portion 31 can be installed in a manner to overlap with the front surface of the cooler central portion 14 a provided with fins 91 in the cooler 14 when viewed from the front. . In this case, the return air path 80 of the cold air from the vegetable compartment 5 overlaps with the hairpin bend 95 of the refrigerant pipe 92 in the cooler 14, etc., so that it does not overlap with the vacuum heat insulating material 39 when viewed from the front. set in the same way. In addition, in the cooler 14, the range which overlaps with the vacuum heat insulating material 39 or the return air path 80 when viewed from the front is not limited to the above-mentioned case. For example, in the case where the cost reduction of the vacuum heat insulating material 39 is emphasized, one end side in the left-right direction of the cooler 14 may be used with a part outside the cooler central part 14a and the cooler central part 14a. The return air passage 80 is arranged in such a manner that a part of one end side thereof overlaps. For another example, when the heat insulation between the vegetable compartment 5 and the cooler compartment 52 is emphasized, the vacuum heat insulating material 39 may be provided so as to overlap at least the entire front surface of the cooler central portion 14a.

FIG. 20 is a schematic front view showing the cooler 14 of the refrigerator 1 in FIG. 3 . FIG. 21 shows a front perspective view of the cooler 14 of FIG. 20 . FIG. 22 is a schematic diagram showing a section T-T of the refrigerator 1 in FIG. 2 . The configuration of the cooler 14 will be described in detail with reference to FIGS. 20 to 22 .

The cooler 14 has a refrigerant pipe 92 through which the refrigerant circulates and a plurality of fins 91 mounted on the refrigerant pipe 92 . The cooler 14 uses a plurality of fins 91 to exchange heat between the air flowing around the fins 91 and the refrigerant. The refrigerant pipe 92 is bent to form a hairpin bend 95 on the right side and the left side of the cooler center portion 14 a provided with the fins 91 . A plurality of hairpin bends 95 are provided on each of the left and right sides of the refrigerant pipe central portion constituting the cooler central portion 14a among the refrigerant pipes 92, and the right ends of the two refrigerant pipe central portions provided with a plurality of fins 91 are connected to each other. or the left ends are connected to each other. The central parts of the connected refrigerant pipes are arranged horizontally in parallel with each other.

In addition, the cooler 14 has a partition 97 provided so as to surround the hairpin 95 at each of the left and right ends. Each partition 97 is provided with: a plate-shaped partition plate 97a formed with a hole for disposing the refrigerant pipe 92 and extending upward and downward; an outer plate 97b covering the lateral end of the hairpin bend 95 in the refrigerant pipe 92 and the roof portion 97c arranged on the upper side of the hairpin bend portion 95; and the partition portion 97 has a substantially U-shape. The partition plate 97 a is provided in the refrigerant pipe 92 so as to partition the central portion of the refrigerant pipe and the hairpin bend portion 95 . In the cooler 14, the portion between the partition plate 97a of the left partition 97 and the partition plate 97a of the right partition 97 is the cooler central portion 14a. Each partition 97 can be formed by bending a single plate member.

As described above, in the cooler 14, since the hairpin bend portion 95 is not provided with the fins 91, the heat exchange capability at the left end portion and the right end portion of the cooler 14 becomes lower than that at the cooler central portion 14a. . Therefore, in the temperature difference between the cooler compartment 52 and the vegetable compartment 5 shown in FIG. 14 , the temperature difference around the hairpin bend portion 95 is smaller than that around the cooler central portion 14a. Therefore, as shown in FIG. 14 , by providing a vacuum heat insulating material 39 in the vegetable compartment rear wall portion 31 between the vegetable compartment 5 and the cooler compartment 52 so as to overlap with the cooler central portion 14a when viewed from the front, Furthermore, by providing the return air duct 80 next to the vacuum heat insulating material 39 so as to overlap at least a part of the hairpin bend 95, the influence on the heat transfer between the vegetable compartment 5 and the cooler compartment 52 can be suppressed, and at the same time The lateral width Wv (see FIG. 15 ) of the vacuum heat insulating material 39 can be reduced smaller than the prior art in the vegetable compartment rear wall portion 31 .

In addition, as shown in FIG. 21 , the heater tube 93 of the anti-frost heater 47 is disposed on the front surface of the cooler 14 . As shown in FIG. 22 , the anti-frost heater 47 includes a holding portion 94 for holding the heater tube 93 . The melted water formed by melting the frost by the anti-frost heater 47 of the cooler 14 is discharged out of the heat insulation box 19 through the drip pan 66 .

As shown in FIG. 22 belonging to the cross-section of the lower part of the cooler chamber 52, the outlet 81 of the return air passage 80 of the cold air from the vegetable chamber 5 is provided on the holding part 94 of the heater pipe 93 in the vegetable chamber rear wall part 31. Nearby, and the cold air will return to the configuration of the cooler 14 arranged above it. Specifically, in the example shown in FIG. 22 , the outlet 81 in the return air path 80 of the cold air from the vegetable compartment 5 is provided at a position overlapping the holding portion 94 of the heater tube 93 when viewed from the front. Alternatively, the outlet 81 of the return air passage 80 may be provided on the outside of the holding portion 94 when viewed from the front.

In addition, the position and structure of the outlet 81 in the return air path 80 of the cold air from the vegetable compartment 5 are not limited to the above. The cold air outlet 81 in the return air path 80 may be arranged at a position overlapping with the cooler 14 or a position below the cooler 14 when viewed from the front. Here, if the cold air outlet 81 is positioned higher than the cooler 14 , the cold air cannot flow back through the cooler 14 , so this case is excluded.

FIG. 23 is a schematic diagram showing another example of the return air path 80 of the cold air from the vegetable compartment 5 in the refrigerator 1 of FIG. 22 . In the example shown in FIG. 23 , the return air passage 80 has an air passage guide portion 82 on the outlet 81 side thereof, and the air passage guide portion 82 extends toward the central heater tube 93 rather than the holding portion 94 . The air passage guide portion 82 has, for example, a guide front portion 82b formed on the rear portion of the vegetable compartment rear wall portion 31, and is formed of a heat insulating wall different from the vegetable compartment rear wall portion 31 provided in the cooler compartment 52. The rear portion 82a is guided.

The air passage guide part 82 is provided so that it may incline toward the rear and the center side as it goes to the outlet 81. As shown in FIG. With such a configuration, the outlet 81 of the return air duct 80 is close to the heater tube 93 , and the return cold air flowing through the outlet 81 is heated by the heater tube 93 , and frost generation around the outlet 81 can be suppressed.

In addition, in the example shown in FIG. 23 , the air passage guide 82 on the outlet side of the return air passage 80 of the cold air from the vegetable compartment 5 is configured such that the air passage width becomes narrow toward the outlet 81 . With such a configuration, the heat insulating material can be arranged thicker in the vicinity of the outlet 81 , so that the heat insulation around the return air passage 80 can be improved compared to the case shown in FIG. 22 . In addition, by narrowing the air path width of the air path guide part 82 in the return air path 80 compared to other parts, even if it is used in the vegetable compartment rear wall portion 31, the same amount as that shown in FIG. 22 can be achieved. In the case of a heat insulating material (eg, expanded styrene), the vegetable compartment rear wall 31 can also be thinned to increase the capacity of the vegetable compartment 5 .

In the example shown in FIG. 23 , the guide rear portion 82a of the air passage guide portion 82 is at least partially overlapped with the holding portion 94 of the heater tube 93 when viewed from the front, and guides the outlet 81 of the return air passage 80 to the heating area. Components on the side of the device tube 93. The guide rear part 82a and the guide front part 82b can be integrally formed with the foamed styrene foam on which the return air passage 80 is formed in the vegetable compartment rear wall part 31, or they can be installed by different members as mentioned above.

In the example shown in FIG. 2 and FIG. 15 , the return air path 80 of the cold air from the vegetable compartment 5 and the return port 45 as its inlet are located in the opposite direction relative to the center line passing through the center of the left and right sides of the heat insulating box 19. On the right side, the vacuum heat insulating material 39 is disposed on the left side of the return air passage 80 and the return port 45 . The present embodiment is not limited to the above configuration.

Fig. 24 is a schematic front view showing another example of the refrigerator 1 of Fig. 2 . FIG. 25 is a schematic front view of the refrigerator 1 shown in FIG. 24 . In the example shown in FIG. 24 and FIG. 25 , the structure of the refrigerator 1 shown in FIG. 2 is reversed left and right with respect to the left and right center lines of the heat insulating box 19 . That is, in the example shown in FIG. 24 and FIG. 25 , the return air path 80 and the return port 45 of the cold air from the vegetable compartment 5 are arranged on the left side facing the center line of the left and right sides of the heat insulation box body 19, and the vacuum The heat insulating material 39 is arranged on the right side of the return air passage 80 . Also in the configuration of such a refrigerator 1, the same effect as that obtained in the case of FIG. 2 can be obtained.

Fig. 26 is a schematic diagram showing a vacuum heat insulating material in the wall portion constituting the vegetable compartment 5 of the refrigerator 1 in Fig. 1 . Fig. 27 is a schematic diagram showing the vacuum heat insulating material in the wall portion constituting the vegetable compartment 5 of the refrigerator 1 of Fig. 26 viewed from the back. 1, 2, 26 and 27, the arrangement of the vacuum heat insulating material of the refrigerator 1, especially the arrangement of the vacuum heat insulating material in the wall portion constituting the vegetable compartment 5 will be described.

The vegetable compartment 5 is composed of a plurality of wall portions such as the top wall portion 32, the bottom wall portion 35, the vegetable compartment back wall portion 31, the right side wall portion 19c1, the left side wall portion 19d1, and the door 5a. The ice-making compartment 3 and the temperature switching compartment 4 are separated from the vegetable compartment 5, the bottom wall 35 separates the freezer compartment 6 below from the vegetable compartment 5, and the vegetable compartment back wall 31 is separated from the cooler compartment 52 at the rear. The right side wall part 19c1, the left side wall part 19d1 and the door 5a partition off the left, right and front exterior of the refrigerator 1 from the vegetable compartment 5.

One sheet of rectangular vacuum heat insulating materials 24 , 24 , 24 , 33 , 36 , 39 is provided inside each of the plurality of wall portions constituting the vegetable compartment 5 . Here, the right side wall 19c1 of the vegetable compartment 5 is a part of the right side 19c of the heat insulating box 19, and the left side wall 19d1 of the vegetable compartment 5 is a part of the left side 19d of the heat insulating box 19. Therefore, it is also possible to have a configuration in which a single rectangular and plate-shaped vacuum heat insulating material 24 is arranged over the whole heat insulation box 19 of the refrigerator 1 including other storage rooms above and below the vegetable room 5. Right face 19c. In addition, a configuration may be adopted in which a single rectangular and plate-shaped vacuum heat insulating material 24 is arranged over the entire heat insulating box 19 of the refrigerator 1 including other storage rooms above and below the vegetable room 5. Left face 19d.

On the other hand, a piece of rectangular and plate-shaped vacuum insulation material 33 is provided in the top wall portion 32 of the vegetable compartment 5, and a piece of rectangular and plate-shaped vacuum insulation material 33 is provided in the bottom wall portion 35 of the vegetable compartment 5. As for the heating material 36 , a single rectangular and plate-shaped vacuum heat insulating material 39 is arranged in the vegetable compartment back wall portion 31 . Moreover, one sheet of rectangular and plate-shaped vacuum heat insulating materials 24 is provided in the door 5a of the vegetable compartment 5. As shown in FIG.

The coverage rate of the vacuum heat insulating materials 24, 24, 24, 33, 36, 39 with respect to the total wall surface area of the vegetable compartment 5 is preferably 80% or more. As mentioned above, by arranging the vacuum heat insulating materials 24, 24, 24, 33, 36, 39 on the six sides of the vegetable compartment 5 having a substantially rectangular parallelepiped shape or a substantially cubic shape, it is possible to suppress the flow from the vegetable compartment 5 to the adjacent one. Heat transfer from other storage rooms. Or it is possible to suppress the transfer of cold and heat from other adjacent storage rooms and cooler rooms 52 to the vegetable room 5 . Moreover, the amount of heat intrusion into the vegetable compartment 5 from the outside can be suppressed by the right side wall part 19c1, the left side wall part 19d1, and the door 5a.

Fig. 28 is a partial schematic diagram of the vegetable compartment 5 of the refrigerator in Fig. 15 . At least one of the plurality of wall portions constituting the vegetable compartment 5 has a warming heater 46 . In the example shown in FIG. 28, the bottom wall part 35 of the vegetable compartment 5 is provided with the structure which provided the warming heater 46. As shown in FIG. In this way, by setting at least one of the plurality of wall portions constituting the vegetable compartment 5 with the heat-retaining heater 46, it is possible to heat the inside of the vegetable compartment 5 with the heat-retaining heater 46 when the interior of the vegetable compartment 5 is too cold. .

In addition, although it is defined in Embodiment 1 that the cooler 14 is disposed behind the vegetable compartment 5, the cooler 14 is disposed behind a storage room (first storage room) that is set to a higher temperature than other adjacent storage rooms. This disclosure can be applied to the constitution. In addition, although it has been described that the vacuum heat insulating material 39 is included in the back wall portion 31 of the vegetable compartment, that is, the back wall portion of the storage room, it is also possible to use the vacuum heat insulating material 39 and the return air path of cold air from the storage room to store the vegetable compartment. The chamber is separated from the cooler 14 . In addition, in this case, the return air path arrange|positioned beside the vacuum heat insulating material 39 may consist of ducts.

As mentioned above, the refrigerator 1 of Embodiment 1 is equipped with the heat insulation box 19 which has the opening covered with the door 5a on the front surface, and forms several storage rooms inside. Inside the heat-insulating box 19 is provided with: a first storage room (for example, vegetable room 5), which is set to be higher in temperature than adjacent other storage rooms (for example, ice making room 3 and temperature switching room 4). storage; and the cooler room 52, which is provided behind the first storage room and equipped with the cooler 14. In addition, in the interior of the heat insulation box 19, a first vacuum heat insulating material (vacuum heat insulating material 39) is arranged between the first storage room and the cooler room 52; The first storage room is communicated with the cooler room 52 , and the cold air flowing back into the cooler room 52 is circulated. When the heat insulation box 19 is seen from the front, the 1st vacuum heat insulation material (vacuum heat insulation material 39) is arrange|positioned so that part of cooler 14 may overlap. The return air duct 80 is provided adjacent to the first vacuum heat insulating material so as not to overlap with the first vacuum heat insulating material but to overlap with the cooler 14 . The outlet 81 of the cold air in the return air path 80 is arranged at a position overlapping with the cooler 14 or a position below the cooler 14 .

Thus, when viewing the heat insulation box 19 from the front, since the return air passage 80 does not overlap with the first vacuum heat insulating material, it is no longer necessary to install the return air passage 80 behind the first vacuum heat insulating material. space, the reduction of the storage space of the first storage room (vegetable room 5) can be avoided. In addition, in the refrigerator 1 of the present disclosure, when the heat insulation box 19 is viewed from the front, the return air passage 80 is repeated in a manner that does not overlap with the first vacuum heat insulation material in the cooler 14. It is provided adjacent to the first vacuum heat insulating material. The outlet 81 of the cold air in the return air path 80 is arranged at a position overlapping with the cooler 14 or a position below the cooler 14 . Therefore, in the present disclosure, it is possible to provide a return air passage for returning cold air through the cooler 14 without extending the return air passage 80 in the lateral direction and bypassing the first vacuum heat insulating material as in the past. 80. In this way, according to the present disclosure, a refrigerator 1 can be provided, which can be provided with a return air passage 80 for returning cold air through the cooler 14 without reducing the storage space.

In addition, the first vacuum heat insulating material (vacuum heat insulating material 39 ) has a lateral width Wv smaller than the lateral width Wc of the cooler 14 . In addition, when viewing the heat insulation box 19 from the front, the first vacuum heat insulating material is installed so that the right end of the first vacuum heat insulating material covers the right end of the cooler 14 or the left end of the first vacuum heat insulating material The left end of the cooler 14 is partially covered.

Thereby, by shifting one piece of vacuum heat insulating material in the left-right direction with respect to the cooler 14, and disposing the return air duct 80 on the side opposite to the shifted direction, it is possible to realize the first The front surface of the cooler 14 is covered with a vacuum heat insulating material and the return air duct 80 .

In addition, the first vacuum heat insulating material (vacuum heat insulating material 39 ) has a lateral width Wv smaller than the lateral width Wc of the cooler 14 . In addition, when viewing the heat insulation box 19 from the front, the first vacuum heat insulating material is installed so that the right end of the first vacuum heat insulating material coincides with the right end of the cooler 14, or the left end of the first vacuum heat insulating material Consistent with the left end of the cooler 14 .

Thereby, the front surface of the cooler 14 is covered by the first vacuum heat insulating material (vacuum heat insulating material 39 ) and the return air passage 80, and the heat transfer between the cooler 14 and the vegetable compartment 5 is suppressed, and at the same time, the Cost reduction is aimed at minimizing the size of the first vacuum heat insulating material.

Moreover, the heat insulation box 19 contains the 1st vacuum heat insulating material (vacuum heat insulating material 39) inside, and is provided with the storage room back wall part ( Vegetable compartment back wall portion 31), the backflow air path 80 is located at the storage compartment back wall portion. Thereby, compared with the conventional case, the manufacturing cost of the storage room back wall part containing a 1st vacuum heat insulating material can be further reduced.

In addition, a storage room blowing air passage (blowing air passage 30) is provided on the back wall of the storage room (the back wall of the vegetable room 31). Room 5) communicates and supplies the cold air blown out to the first storage room to circulate. The inner wall of the side of the first storage room in the back wall of the storage room is formed with the air outlet 44 belonging to the outlet of the cold air in the storage room blowing air passage, and the return opening belonging to the inlet of the cold air in the return air passage 80 45. And when the heat insulation box 19 is seen from the front, the 1st vacuum heat insulating material (vacuum heat insulating material 39) is provided in the position which does not overlap with any of the air outlet 44 and the return port 45.

Thereby, not only the return air path 80 but also the blowing air path 30 need not bypass the first vacuum heat insulating material, so the blowing air path 30 can be provided in a simple shape.

In addition, the return port 45 is provided on the inner wall at the same height as the blowout port 44 or above the blowout port 44 . Thereby, the cold air heated up in the first storage compartment (vegetable compartment 5 ) flows into the return air duct 80 more easily than in the conventional case where the return port 45 is located below the air outlet 44 . As a result, cold air can be easily circulated in the refrigerator 1, and the storage items in each storage chamber can be efficiently cooled.

The air outlet 44 is to directly blow out the cold air cooled by the cooler 14 into the first storage room (vegetable room 5), or blow out the cold air cooled by the cooler 14 and passed through other storage rooms (for example, the refrigerator room 2). In the first storage room (vegetable room 5).

Thereby, when the cold air cooled by the cooler 14 is blown directly into the first storage room (vegetable room 5), it is possible to effectively cool the food and other storage items stored in the first storage room. Moreover, when cool air is blown into the 1st storage room (vegetable room 5) via another storage room, it can suppress that the storage thing in the vegetable room 5 is overcooled.

Moreover, the refrigerator 1 is equipped with the air volume adjustment apparatus 18c which adjusts the volume of the cold air blown out from the air outlet 44. As shown in FIG. Thereby, the amount of cold air supplied to the first storage room can be adjusted according to the temperature of the first storage room (vegetable room 5) or the relationship with the set temperature or capacity of other storage rooms of the refrigerator 1, thereby preventing being refrigerated. Supercooling of stored goods, etc.

In addition, the refrigerator 1 is equipped with a heat-retaining heater 46 for keeping the first storage room (vegetable room 5) warm, the heat-insulating box 19 has a plurality of wall parts constituting the first storage room, and the heat-retaining heater 46 is provided in a plurality of walls. any of the walls. Thereby, when the first storage room is too cold, the first storage room is heated by the thermal insulation heater 46, so that it is possible to prevent storage items in the first storage room from being unintentionally frozen or the like.

In addition, the first storage room is the vegetable room 5, and the other storage rooms are storage rooms (for example, the refrigerator room 2) that are lower in temperature range than the vegetable room 5, and are switched to a temperature range lower than the temperature range of the vegetable room 5. The temperature switching chamber 4, the freezing chamber 6, the ice-making chamber 3 or the micro-freezing chamber. Thereby, this indication can be applied to the refrigerator 1 provided with the various vegetable compartment 5 and these other storage compartments, and the same effect can be acquired.

In addition, in the interior of the heat insulation box 19, a refrigerator compartment 2, an ice-making compartment 3, a temperature switching compartment 4, a freezer compartment 6, and a vegetable compartment 5 as a first storage compartment are formed. The ice room 3, the temperature switching room 4, the vegetable room 5, and the freezer room 6 are arranged in sequence. Thereby, the return air duct 80 connected to the vegetable compartment 5 can be made into a simple shape, and at the same time, the cool air from the cooler 14 can be efficiently supplied to the above and below the vegetable compartment 5 set in the positive temperature zone. Both the ice making compartment 3 and the freezer compartment 6 are set in the negative temperature zone.

Moreover, the 1st storage room and other storage rooms are arrange|positioned in the up-down direction of the heat insulation box 19. As shown in FIG. In addition, each of the two side wall parts (right side surface 19c and left side surface 19d) of the heat insulation box 19 has a second vacuum heat insulating material ( Vacuum insulation material 24, 24). Thereby, the vacuum heat insulating material 24 used for the refrigerator 1 can be arrange|positioned efficiently. As a result, the number of sheets of the vacuum heat insulating material used can be reduced, and reduction of manufacturing cost, simplification of assembly, and improvement of manufacturing efficiency can be achieved.

Implementation Type 2 Fig. 29 is a schematic front view of the refrigerator 1 of Embodiment 2 of the present disclosure. FIG. 30 is a schematic diagram showing a section C-C of the refrigerator 1 in FIG. 29 . About the refrigerator 1 of Embodiment 2, the structure different from the refrigerator 1 of Embodiment 1 is demonstrated.

As shown in Fig. 29, in the refrigerator 1 of Embodiment 2, when viewed from the front, a rectangular and plate-shaped vacuum heat insulating material 39 is overlapped on the whole of the blowing air passage 41 of the cold air to the freezing chamber 6. mode configuration. Furthermore, the return air duct 80 is arrange|positioned so that the right part which does not overlap with the vacuum heat insulating material 39 among the cooler 14 may be covered when viewed from the front. When viewed from the front, the return air duct 80 and the vacuum heat insulating material 39 are arranged so as not to overlap. In addition, the foam heat insulating material 40a is arrange|positioned so that the left part which does not overlap with the vacuum heat insulating material 39 in the cooler 14 may be covered when viewed from the front. The foam heat insulating material 40a neither overlaps with the vacuum heat insulating material 39 nor overlaps with the blowing air path 41 when viewed from the front.

In FIG. 30 , a cross section in the front-rear direction passing through the cooler 14 without passing through the vacuum heat insulating material 39 is shown. As shown in FIG. 30, the foam heat insulating material 40a is between the vegetable compartment 5 and the cooler 14, and the part where neither the vacuum heat insulating material 39 nor the blowing air path 41 is arranged, suppresses the heat from the cooler 14. Invasion of heat and cold into vegetable compartment 5. In addition, between the vegetable compartment 5 and the cooler 14, the heat insulating material arranged in the part which neither the vacuum heat insulating material 39 nor the blowing air path 41 is arrange|positioned is not limited to the foam heat insulating material 40a.

As mentioned above, in Embodiment 2, the freezer compartment 6 adjacent to the first storage compartment (vegetable compartment 5) and the freezer compartment blowing air passage (blowing air passage 41) are provided inside the heat insulating box 19, The freezer compartment blowing air passage connects the cooler compartment 52 with the freezer compartment 6 , and supplies the cold air blown to the freezer compartment 6 to circulate. Moreover, the foam heat insulating material 40a is provided in the inside of the heat insulation box 19. As shown in FIG. In addition, when viewing the heat insulating box 19 from the front, the first vacuum heat insulating material (vacuum heat insulating material 39) is completely overlapped with the part located behind the first storage room in the freezer room blowing air path. set in the same way. In addition, when the heat insulation box 19 is seen from the front, the foam heat insulation material 40a is provided in the region which does not overlap any of the 1st vacuum heat insulation material and the return air path 80 in the cooler 14 .

Thereby, in the refrigerator 1 of Embodiment 2, by the vacuum insulation material 39 and the foam insulation material arrange|positioned at the front, it suppresses that the blowing air duct 41 of the cold air to the freezer compartment 6 flows into the vegetable compartment 5 The inflow of cold and heat can reduce the vacuum heat insulating material 39 more than the case of Embodiment 1 at the same time, and the manufacturing cost can be reduced.

In addition, Embodiment 1 and 2 of this disclosure may be combined, and it may apply to other parts. For example, in Embodiment 2, the vegetable compartment rear wall 31 that separates the cooler compartment 52 from the vegetable compartment 5 may be configured in the same manner as in Embodiment 1, and the vegetable compartment rear wall 31 A vacuum insulation material 39 is included. In this case, the heat insulating foam material 40 a is a part of the heat insulating foam material 40 arranged around the vacuum heat insulating material 39 in the vegetable compartment rear wall portion 31 . In addition, this disclosure can be applied as long as there are two or more storage rooms with different set temperatures, and at least a part of the storage room on the high temperature side overlaps with the cooler 14 when viewed from the front.

1: Refrigerator 2: Refrigerator 2a, 3a, 4a, 5a, 6a: doors 2b: Floor surface 3: Ice room 4: Temperature switching chamber 5: Vegetable room 6: Freezer 6b: storage box 6c: Guide Department 6c1: First Guidance Department 6c2: The second guide 7: Refrigerant circuit 8: Compressor 9: Air-cooled condenser 10: Condenser 11: Anti-condensation pipe 12: Dryer 13: Decompression device 14: Cooler 14a: Central part of cooler 14b: lower end 15: blower 16a, 16b, 16c, 16d: temperature sensor 17: Control Department 18a, 18b, 18c: air volume adjustment device 19: Insulation box 19a: top face 19b: bottom face 19c: Right face 19c1: right side wall 19d: left face 19d1: left side wall 19f: back part 20: wall 21: sheet metal 22: inner box 23: Insulation material 24,33,36,39: vacuum insulation 25: support 26: spacer 27: (to the cold air in the refrigerator) blowing air path 28: Return air path (of cold air from the ice maker) 29a: Return air path (of cold air from temperature switching chamber) 29b: Return air path (of cold air from the refrigerator) 30: (to the air-conditioning of the vegetable room) blowing air path 31: Back wall of the vegetable compartment 32: top wall 34,37: Urethane foam material 35: Bottom wall 38,42: Insulation wall outer wall 40,40a: foam insulation 41: (to the cold air in the freezer) blowing air path 44: Blow outlet 45: return port 46: Insulation heater 47: Anti-frost heater 51: Mechanical room 52: Cooler room 66:Drip tray 70: (from the cold air from the freezer) return air path 80: Return air path (of cold air from the vegetable compartment) 81: export 82: Airway Guidance Department 82a: Guide rear 82b: Guidance front 91: fins 92: Refrigerant pipe 93: heater tube 94: Keeping Department 95: hairpin bend 97: Partition 97a: Partition board 97b: Outer plate 97c: roof part Wv, Wc: horizontal width (width)

Fig. 1 is a perspective view showing the appearance of a refrigerator according to Embodiment 1 of the present disclosure. Fig. 2 is a schematic front view showing the interior of the refrigerator of Fig. 1 . Fig. 3 is an explanatory diagram showing a front-rear longitudinal section of the refrigerator of Fig. 1 . FIG. 4 is a diagram showing a refrigerant circuit of the refrigerator in FIG. 1 . Fig. 5 is an explanatory diagram showing a section of a part of the wall of the heat insulating box of the refrigerator in Fig. 1 . Fig. 6 is an explanatory view showing a section of a part of the wall of the left side of the heat insulating box of the refrigerator in Fig. 1 . Fig. 7 is an explanatory view showing another example of a section of a part of the wall of the heat insulating box shown in Fig. 5 . Fig. 8 is an explanatory diagram showing another example of a section of a part of the wall of the heat insulating box shown in Fig. 5 . Fig. 9 is a diagram showing a front-back longitudinal section around the vegetable compartment of the refrigerator in Fig. 1 . Fig. 10 is an explanatory diagram showing a longitudinal section of another example of the top wall portion in the vegetable compartment of Fig. 9 . Fig. 11 is an explanatory diagram showing a longitudinal section of another example of the ceiling wall in the vegetable compartment of Fig. 9 . Fig. 12 is a diagram showing another example of the back wall of the vegetable compartment in Fig. 9 . Fig. 13 is a diagram showing another example of the back wall of the vegetable compartment in Fig. 9 . Fig. 14 is a schematic diagram showing the section X-X of the refrigerator in Fig. 2 . Fig. 15 is a schematic front view showing the lower part of the refrigerator in Fig. 2 . Fig. 16 is a schematic diagram showing the section A-A of the refrigerator in Fig. 2 . Fig. 17 is a schematic diagram showing the blowing air path of the cold air to the freezer and the return air path of the cold air from the freezer in Fig. 16 . Fig. 18 is a schematic diagram showing a section B-B of the refrigerator in Fig. 2 . FIG. 19 is a schematic diagram showing the return air path of the cold air from the vegetable compartment in FIG. 18 . Fig. 20 is a schematic front view showing the cooler of the refrigerator in Fig. 3 . FIG. 21 is a front perspective view showing the cooler of FIG. 20 . Fig. 22 is a schematic diagram showing a T-T section of the refrigerator in Fig. 2 . Fig. 23 is a schematic diagram showing another example of the return air path of cold air from the vegetable compartment in the refrigerator of Fig. 22 . Fig. 24 is a schematic front view showing another example of the refrigerator of Fig. 2 . Fig. 25 is a schematic front view showing the refrigerator of Fig. 24 . Fig. 26 is a schematic diagram showing a vacuum heat insulating material in the wall constituting the vegetable compartment of the refrigerator in Fig. 1 . Fig. 27 is a schematic view showing the vacuum heat insulating material in the wall constituting the vegetable compartment of the refrigerator in Fig. 26 viewed from the back. Fig. 28 is a partial schematic view of the vegetable compartment of the refrigerator in Fig. 15 . Fig. 29 is a schematic front view of a refrigerator of Embodiment 2 of the present disclosure. Fig. 30 is a schematic diagram showing a section C-C of the refrigerator of Fig. 29 .

1: Refrigerator

3: Ice room

4: Temperature switching chamber

5: Vegetable room

6: Freezer

14: Cooler

15: blower

19: Insulation box

28: Return air path (of cold air from the ice maker)

29a: Return air path (of cold air from temperature switching chamber)

29b: Return air path (of cold air from the refrigerator)

30: (to the air-conditioning of the vegetable room) blowing air path

31: Back wall of the vegetable compartment

32: top wall

35: Bottom wall

39: Vacuum insulation

41: (to the cold air in the freezer) blowing air path

44: Blow outlet

45: return port

80: Return air path (of cold air from the vegetable compartment)

Wv, Wc: horizontal width (width)

Claims (15)

A refrigerator is provided with a heat-insulating box body, the aforementioned heat-insulated box system has an opening covered with a door on the front surface, and a plurality of storage rooms are formed inside, and the interior of the aforementioned heat-insulated box body is provided with: The first storage room is set to have a higher temperature than the adjacent other aforementioned storage rooms and stores stored items; The cooler room is located behind the aforementioned first storage room and equipped with a cooler; The first vacuum insulation material is disposed between the first storage room and the cooler room; The return air path connects the aforementioned first storage room with the aforementioned cooler room, and supplies the circulation of cold air returning to the aforementioned cooler room; and When the heat insulation box is viewed from the front, the first vacuum heat insulation material is arranged so as to overlap with a part of the cooler, and the return air path is arranged so as not to overlap with the first vacuum heat insulation material and It is arranged adjacent to the first vacuum heat insulating material in a manner repeated with the aforementioned cooler. The refrigerator as described in claim 1, wherein, When the heat insulation box is viewed from the front, the outlet of the cold air in the return air path is arranged at a position overlapping with the cooler or a position below the cooler. The refrigerator as described in claim 1 or 2, wherein, The first vacuum insulation material has a width smaller than that of the cooler; and When the heat insulation box is viewed from the front, the first vacuum heat insulation material is arranged so that the right end of the first vacuum heat insulation material covers the right end of the cooler, or the first vacuum heat insulation material The left end portion covers the left end of the aforementioned cooler. The refrigerator as described in claim 1 or 2, wherein, The first vacuum insulation material has a width smaller than that of the cooler; and When viewing the heat insulation box from the front, the first vacuum heat insulation material is arranged so that the right end of the first vacuum heat insulation material coincides with the right end of the cooler, or the first vacuum heat insulation material The left end is consistent with the left end of the aforementioned cooler. The refrigerator as described in claim 1 or 2, wherein, the inside of the aforementioned heat insulation box is provided with: The freezing room is adjacent to the aforementioned first storage room; The blowing air path of the freezer compartment communicates the aforementioned cooler compartment with the aforementioned freezer compartment, and supplies the circulation of the aforementioned cold air blown out to the aforementioned freezer compartment; and foam insulation; and When the heat insulation box is viewed from the front, the first vacuum heat insulation material system is installed so as to completely overlap with the part behind the first storage room in the freezer room blowing air path, and the The foam heat insulating material is provided in the area which does not overlap with any of the said 1st vacuum heat insulating material and the said return air path in the said cooler. The refrigerator according to claim 1 or 2, wherein the first vacuum heat insulating material is composed of a rectangular plate-shaped vacuum heat insulating material. The refrigerator as described in claim 1 or 2, wherein, The heat insulation box system includes the first vacuum heat insulating material inside, and has a storage room rear wall portion that separates the first storage room from the cooler room; and The aforementioned return air path is arranged on the back wall of the aforementioned storage room. The refrigerator as described in claim 7, wherein, A storage room blowing air path is provided on the back wall of the storage room, and the storage room blowing air path connects the cooler room with the first storage room, and supplies the cold air blown out to the first storage room to circulate; The inner wall on the side of the first storage room in the back wall of the storage room is formed with an air outlet belonging to the outlet of the cold air in the outlet air path of the storage room and an inlet of the cold air in the return air path. the return port; and When the said heat insulation box is seen from the front, the said 1st vacuum heat insulating material is provided in the position which does not overlap with any of the said blowing port and the said return port. The refrigerator according to claim 8, wherein the return port is provided on the inner wall at the same height as the blowing port or at a position higher than the blowing port. The refrigerator according to claim 8, wherein the air outlet directly blows the cold air cooled by the cooler into the first storage room, or blows the cool air cooled by the cooler and passes through the other storage rooms. The cold air is blown into the first storage chamber. The refrigerator according to claim 8, which is provided with an air volume adjustment device for adjusting the amount of the cold air blown out from the outlet. The refrigerator according to claim 1 or 2, which is equipped with a heat-retaining heater for keeping the first storage room warm; and The heat insulation box system has a plurality of walls constituting the first storage room; The aforementioned thermal insulation heater is provided on any one of the plurality of aforementioned wall portions. The refrigerator according to claim 1 or 2, wherein the first storage room is a vegetable room, and the other storage rooms are storage rooms with a temperature range lower than that of the vegetable room, switched to a temperature range lower than that of the vegetable room. Temperature switching room, freezer room, ice-making room or micro-freezing room in lower temperature zone. The refrigerator according to claim 1 or 2, wherein a refrigerating room, an ice-making room, a temperature switching room, a freezing room, and a vegetable room belonging to the first storage room are formed inside the heat-insulating box, and from The upper part is arranged in the order of the aforementioned refrigerating room, the aforementioned ice making room, the temperature switching room, the vegetable room, and the freezing room. The refrigerator as described in claim 1 or 2, wherein, The aforementioned first storage room and other aforementioned storage rooms are arranged in the vertical direction of the aforementioned heat insulation box; and Each of both side wall parts of the said heat insulation box has the 2nd vacuum heat insulating material provided over the other said storage room and the said 1st storage room in the up-down direction.