WO2019043913A1

WO2019043913A1 - Refrigerator

Info

Publication number: WO2019043913A1
Application number: PCT/JP2017/031611
Authority: WO
Inventors: 誠岡部
Original assignee: 三菱電機株式会社
Priority date: 2017-09-01
Filing date: 2017-09-01
Publication date: 2019-03-07
Also published as: TW201913020A; CN209027172U; JP6827546B2; AU2017430066A1; JPWO2019043913A1; SG11202000585YA; AU2017430066B2; TWI727196B; CN109425175B; CN109425175A

Abstract

This refrigerator is equipped with a first storage chamber in the freezing temperature zone, a second storage chamber in the freezing temperature zone, a third storage chamber in the refrigerating temperature zone which is positioned between the first and second storage chambers and has a front surface section and a rear surface section, and a vacuum insulation material provided in each of the wall sections which demarcate the third storage chamber and include the front and rear surface sections. Therein, the vacuum insulation material provided in the rear surface section of the third storage chamber is angled in a manner such that the bottom end is positioned toward the front surface section side and the top end is positioned toward the rear surface section side.

Description

refrigerator

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a refrigerator in which a vacuum heat insulating material is disposed on each wall section that divides a storage room.

In the conventional refrigerator, the layout is from the top to the cold room, the ice making room, the freezing room, and the vegetable room in this order. In the case of this layout, the vegetable room is disposed at the lowest position of the refrigerator. For this reason, the user needs to fold the knee to squash the hips or bend the hips in order to take out the vegetables from the vegetable room.

Here, when the number of times of opening and closing the door or the opening time of the door is compared between the vegetable room and the freezing room, although there are individual differences, the number of opening and closing times of the door is larger in the vegetable room and the opening time of the door is also long. Therefore, it is expected that the convenience as the whole refrigerator will be improved if the vegetable room and the freezer room are interchanged and the vegetable room is arranged above the freezer room.

However, in order to improve the thermal efficiency first, the conventional refrigerator has a configuration in which a plurality of rooms of the freezing temperature zone are gathered at one place.
In the conventional refrigerator, secondly, a cooler is disposed on the back of the freezer compartment, and problems such as dewing or frosting occur even without providing a special heat insulation part between the freezer compartment and the cooler. It is difficult to configure.

On the other hand, in order to improve the convenience of the user, it is conceivable that the refrigerator is laid out from the top in the order of the cold room, the ice making room, the vegetable room and the freezing room. In the refrigerator, a storage room of a refrigeration temperature zone, that is, a plus temperature zone, and a storage room of a freezing temperature zone, that is, a minus temperature zone, are alternately arranged from the top. For this reason, the refrigerator of such a layout is primarily inferior in thermal efficiency to the conventional refrigerator. In addition, the thickness of the wall of each chamber is increased in order to ensure the necessary heat insulation performance, and the space for storing food is smaller when compared in the case where the external shape of the refrigerator is the same.

Moreover, the refrigerator of such a layout will arrange | position a cooler on the back of a vegetable compartment secondly, and provides the heat insulation performance higher than before to the wall part which separates a vegetable compartment and a cooler compared with the past There is a need. In order to enhance the heat insulation performance, the thickness of the wall may be increased. However, as mentioned above, the food storage space is sacrificed. Therefore, as a heat insulation part conventionally, the molded article of the polystyrene foam which has good processability and is convenient for attachment and removal, or transportability was used. However, by using a vacuum heat insulating material having higher heat insulating performance as a heat insulating component, it is possible to achieve both heat insulating performance and food storage space. High thermal insulation performance means that the heat transfer coefficient is small.

JP 2012-242072 A

In the case of disposing a vacuum insulation between the vegetable compartment and the cooler, an air path is required to feed the air cooled by the cooler into the vegetable compartment. Claim 10 of Patent Document 1 states that "the vacuum heat insulating material is provided on the front surface other than the inlet and the outlet among the partition walls constituting the inner wall surface". As described above, there is a method in which all components except the inlet and the outlet are covered with a vacuum heat insulating material. However, in this case, it is necessary to make a hole in the vacuum heat insulating material, provide a notch in the vacuum heat insulating material, or use a plurality of vacuum heat insulating materials. Therefore, the manufacturing cost is increased.
Further, in consideration of the convenience of the user, it is desirable to secure the volume of the vegetable compartment while improving the heat insulation effect by the vacuum heat insulating material.

This invention is for solving the said subject, and it aims at providing the refrigerator which can reduce the manufacturing cost related to a vacuum heat insulating material, ensuring the volume of a vegetable compartment.

The refrigerator according to the present invention has a first storage room of a freezing temperature zone, a second storage room of a freezing temperature zone, a front part and a back part, and between the first storage room and the second storage room A third storage chamber of a refrigerated temperature zone disposed in the housing, and a vacuum heat insulating material provided on each wall including the front and back portions and defining the third storage chamber, the third storage The vacuum heat insulating material provided on the back surface of the chamber is disposed to be inclined such that the lower end is located on the front surface side and the upper end is located on the back surface side.

According to the refrigerator of the present invention, the vacuum heat insulating material provided on the back surface of the third storage chamber is inclined so that the lower end is located on the front surface side and the upper end is located on the back surface side. Thus, the manufacturing costs associated with vacuum insulation can be reduced.

It is an appearance perspective view showing roughly an example of a refrigerator concerning Embodiment 1 of the present invention. It is a schematic front view which shows roughly the layout of the storage chamber of the refrigerator which concerns on Embodiment 1 of this invention. It is a refrigerant circuit block diagram which shows roughly an example of the refrigerant circuit structure of the refrigerator which concerns on Embodiment 1 of this invention. It is a sectional view showing roughly a section of a part of wall part of a box of a refrigerator concerning Embodiment 1 of the present invention. It is the schematic for demonstrating the air circulation path of the refrigerator which concerns on Embodiment 1 of this invention. FIG. 6 is a cross sectional view schematically showing a YY cross section of FIG. 5; It is explanatory drawing which shows roughly return of the air to the cooler of the refrigerator which concerns on Embodiment 1 of this invention. It is sectional drawing which expands and shows roughly the cross section of a part of refrigerator which concerns on Embodiment 2 of this invention. It is the schematic for demonstrating the air circulation path of the refrigerator which concerns on Embodiment 3 of this invention. FIG. 10 is a cross sectional view schematically showing a ZZ cross section of FIG. 9; It is explanatory drawing which shows roughly return of the air to the cooler of the refrigerator which concerns on Embodiment 3 of this invention. It is sectional drawing which expands and shows roughly the cross section of a part of refrigerator which concerns on Embodiment 4 of this invention.

Hereinafter, embodiments of the present invention will be described based on the drawings.
In the drawings, the same reference numerals denote the same or corresponding parts, which are common to the whole text of the specification.
Furthermore, the form of the component shown in the specification full text is an illustration to the last, and is not limited to these descriptions.

Embodiment 1
FIG. 1 is an external appearance perspective view schematically showing an example of a refrigerator 1 according to Embodiment 1 of the present invention. FIG. 2 is a schematic front view schematically showing the layout of the storage compartment of the refrigerator 1. The structure of the refrigerator 1 is demonstrated based on FIG.1 and FIG.2. In the following description, the refrigerator compartment 11, the ice making compartment 21, the temperature switching compartment 22, the vegetable compartment 31, and the freezer compartment 41 may be collectively referred to as storage compartments.

As shown in FIG. 2, the refrigerator 1 is laid out from the top in the order of a refrigerator compartment 11, an ice making compartment 21, a temperature switching compartment 22, a vegetable compartment 31 and a freezing compartment 41. The ice making chamber 21 and the temperature switching chamber 22 are laid out so as to be adjacent to each other, the ice making chamber 21 is located on the left side in the drawing, and the temperature switching chamber 22 is located on the right side in the drawing.
The ice making chamber 21 and the temperature switching chamber 22 are storage chambers of a freezing temperature zone. The vegetable compartment 31 is a storage compartment of a refrigerated temperature zone. The freezer compartment 41 is a storage compartment of a freezer temperature zone.
Icemaker 21 corresponds to the 1st storage room of the present invention.
The freezer compartment 41 corresponds to the second storage compartment of the present invention.
The vegetable compartment 31 corresponds to the third storage compartment of the present invention.

The storage compartments of the refrigerating compartment 11, the ice making compartment 21, the temperature switching compartment 22, the vegetable compartment 31, and the freezing compartment 41 are partitioned by partitions serving as wall parts. The wall will be described in FIG.
The refrigerator compartment 11 and the icemaker 21 are partitioned by a partition 51A. The refrigerator compartment 11 and the temperature switching compartment 22 are separated by a partition 51B. The ice making chamber 21 and the temperature switching chamber 22 are separated by a partition 52 formed of one plate-like member. The ice making room 21 and the vegetable room 31 are separated by a partition 53A. The temperature switching room 22 and the vegetable room 31 are separated by a partition 53B. The vegetable compartment 31 and the freezing compartment 41 are separated by a partition 54 formed of one plate-like member.

Although the partition 51A and the partition 51B are configured by one plate-like member, they are separately described for convenience depending on the ice making chamber 21 and the temperature switching chamber 22. In the following description, when it is not necessary to divide the description into the partition 51A and the partition 51B, they are collectively referred to as the partition 51.
Similarly, although the partition 53A and the partition 53B are configured by one plate-like member, they are separately described for convenience corresponding to the ice making chamber 21 and the temperature switching chamber 22. In the following description, when it is not necessary to divide the description into the partition 53A and the partition 53B, they will be collectively referred to as the partition 53.

The refrigerator 1 includes a box 50 formed of a long rectangular solid. The box 50 includes a front surface 50A, an upper surface 50B, a bottom surface 50C, a right side surface 50D, a left side surface 50E, and a back surface 50F. The box 50 has storage rooms in which the inner space of the box 50 is partitioned by the

partitions

51A, 51B, 52, 53A, 53B, and 54. A door portion that can be opened and closed is provided on the front surface portion 50A that is the front surface of the box 50. As shown in FIG. 1, the door of the refrigerator compartment 11 is a door 11A, the door of the ice making chamber 21 is a door 21A, the door of the temperature switching chamber 22 is a door 22A, and the door of the vegetable compartment 31 is a door 31A, the door of the freezer compartment 41 is illustrated as a door 41A.

The door portion 11A of the refrigerator compartment 11 is configured to open laterally from the central portion through hinges (not shown) provided on the left and right sides in the width direction of the box 50. One door 11A may be provided, and the door 50 may be configured to open from one of the left and right sides in the width direction of the box 50. The door 21A of the ice making chamber 21 is configured as a drawer door that moves in the front-rear direction of the refrigerator 1. The door 22 A of the temperature switching chamber 22 is configured as a drawer door that moves in the front-rear direction of the refrigerator 1. The door 31A of the vegetable compartment 31 is configured as a drawer door that moves in the front-rear direction of the refrigerator 1. The door portion 41A of the freezing chamber 41 is configured as a drawer door that moves in the front-rear direction of the refrigerator 1.

FIG. 3 is a refrigerant circuit configuration diagram schematically showing an example of the refrigerant circuit configuration of the refrigerator 1. The refrigerant circuit 70 and the air circulation path 80 of the refrigerator 1 will be schematically described based on FIG. 3. In FIG. 3, the flows of the refrigerant and the air are indicated by arrows. Moreover, in FIG. 3, each storage chamber is illustrated for description of the air circulation path 80. As shown in FIG. Furthermore, the refrigerant used in the refrigerant circuit 70 is not particularly limited.

The configuration of the refrigerant circuit 70 will be described.
The refrigerator 1 has a refrigerant circuit 70. As shown in FIG. 3, the refrigerant circuit 70 is configured by connecting a compressor 71, an air cooling condenser 72, a heat radiation pipe 73, a pressure reducing device 76, and a cooler 600 in a pipe connection. A dew prevention pipe 74 and a dryer 75 are connected between the heat radiation pipe 73 and the pressure reducing device 76. Moreover, in FIG. 3, the state in which the air blower 800 which supplies air to the cooler 600 is installed is illustrated in the example.

The operation of the refrigerant circuit 70 will be described.
By driving the compressor 71, the refrigerant is discharged from the compressor 71. The refrigerant discharged from the compressor 71 flows into an air-cooled condenser 72 installed in a machine chamber formed in the box 50. The refrigerant that has flowed out of the air-cooled condenser 72 flows through the heat radiation pipe 73 installed inside the urethane of the box 50 of the refrigerator 1. Then, the refrigerant having passed through the heat radiation pipe 73 flows through the anti-sticking pipe 74 which is stretched around the front surface portion 50A of the storage room of the refrigerator 1. The refrigerant is condensed by the condensation process by the air-cooled condenser 72, the heat radiation pipe 73, and the anti-sticking pipe 74.

The condensed refrigerant is supplied to the cooler 600 through the pressure reducing device 76 after passing through the dryer 75. In the cooler 600, the refrigerant supplied to the cooler 600 evaporates, and the blower 800 forcibly exchanges heat with the internally circulated air to generate cool air. The generated cold air is supplied to each storage room to cool each storage room. Thereafter, the refrigerant rises in temperature while exchanging heat with the pressure reducing device 76 through the suction pipe and returns to the compressor 71.
As mentioned above, the refrigerator 1 has the refrigerant circuit 70, and the cold air which cools each storage room is generated.

The configuration of the air circulation path 80 will be described.
The refrigerator 1 has an air circulation path 80. The air circulation path 80 is configured to include the blowoff air path 110 and the return air path 140. The blowout air path 110 is for introducing cold air into each storage room. Further, the return air passage 140 is for guiding the cold air used for cooling in each storage room to the cooler 600. That is, the air circulation path 80 is a path for circulating cool air to the cooler 600 and each storage room via the blowout air path 110 and the return air path 140.

An air flow rate adjusting device is installed at the inlet of the blowoff air passage 110. The air volume adjustment device installed at the inlet of the refrigerator compartment 11 is the first damper 101. The air volume adjustment device installed at the inlet of the ice making chamber 21 is the second damper 201a. The third damper 202 is an air volume adjustment device installed at the inlet of the temperature switching chamber 22. The air volume adjustment device installed at the inlet of the vegetable room 31 is the fourth damper 301.

The operation of the air circulation path 80 will be described.
The air of the refrigerator 1 is supplied to the cooler 600 by driving the blower 800. Then, air forcibly circulated internally by the blower 800 exchanges heat with the refrigerant in the cooler 600 and is cooled. The cold air generated by the heat exchange in the cooler 600 flows through the blowout air path 110 and is blown out to each storage chamber in the refrigerator 1 to cool each storage chamber.

The air circulating through each storage chamber and the cooler 600 has an air volume controlled by a control device (not shown) according to the temperature of the air in the storage chamber or the temperature of the stored food detected by a temperature sensor (not shown) installed in each storage chamber. Regulators are operated to keep each storage room at the proper temperature. The air used for cooling in each storage room flows through the return air path 140 and returns to the cooler 600.

FIG. 4 is a cross sectional view schematically showing a cross section of a part of the wall 55 of the box 50 of the refrigerator 1. The wall 55 of the box 50 of the refrigerator 1 will be described based on FIG. 4.
As shown in FIG. 4, the wall portion 55 of the box 50 of the refrigerator 1 is formed between the sheet metal 56 constituting the outer shell, the inner box 57 constituting the inner wall of each storage chamber, the sheet metal 56 and the inner box 57 It is comprised from the heat insulating material 500 installed, and has suppressed the amount of penetration heat | fever from the outside. The wall 55 constitutes the partition 51A, the partition 51B, the partition 52, the partition 53A, the partition 53B, and the partition 54.

As the heat insulating material 500, it is good to use what was made into the multilayer structure of a vacuum heat insulating material and a urethane foam material at least for the wall part 55 which comprises right side part 50D and left side part 50E of the refrigerator 1. By using a multi-layered structure of a vacuum heat insulating material and a urethane foam as the heat insulating material 500, the heat insulating performance can be enhanced.

Regarding the vacuum heat insulating material, not only the wall 55 constituting the right side 50D and the left side 50E of the refrigerator 1, but also at least the wall 55 constituting the top 50B, the bottom 50C, and the back 50F of the refrigerator 1 It is also possible to mount it on either. By mounting a vacuum heat insulating material, the heat insulation performance can be further enhanced. Further, by mounting the vacuum heat insulating material, the distance between the outer shell of the refrigerator 1 and the inner wall surface of the inner box 57, that is, the heat insulating thickness can be narrowed, and the internal volume can be increased.

In the heat insulating material 500, various internally installed members such as a reinforcing member for correcting distortion of the refrigerator 1, the above-mentioned refrigerant circuit component, electric wiring component and the like are disposed in the space for sealing the urethane foam material. The members are fixed by urethane foam.

The cover area of the vacuum heat insulating material disposed in the heat insulating material 500 secures 40% or more of the entire outer surface area including the door surface area of each storage chamber. The urethane foam material sealed around these vacuum heat insulating materials secures a foam density of 60 kg / cm ³ or more and a flexural modulus of 15.0 MPa or more. This makes it possible to secure the strength of the box 50 of the refrigerator 1.

FIG. 5 is a schematic view for explaining the air circulation path 80 of the refrigerator 1. 6 is a cross-sectional view schematically showing a YY cross section of FIG. FIG. 7 is an explanatory view schematically showing the return of air to the cooler 600 of the refrigerator 1. The air circulation path 80 in the refrigerator 1 will be described in detail based on FIGS. 5 to 7. In FIGS. 5 to 7, the flow of air is indicated by arrows. In addition, in FIG. 5, the case where the chilled room is installed in the refrigerator compartment 11 is shown as an example.

First, the arrangement of the cooler 600 will be described.
As shown in FIG. 6, a cooler chamber 27 is formed on the side of the ice making chamber 21, the temperature switching chamber 22 and the back surface 50 F of the vegetable chamber 31 of the box 50 of the refrigerator 1. The cooler 600 is disposed in the cooler chamber 27. The lower end of the cooler 600 disposed in the cooler chamber 27 is located below the floor surface 31 B of the vegetable chamber 31 in the cooler chamber 27.

By positioning the lower end of the cooler 600 below the floor surface 31B of the vegetable compartment 31, it is possible to secure a larger space above the cooler 600. Thereby, the freedom degree of the size of the air blower 800 installed in a part of cooler chamber 27 becomes large. Further, above the blower 800, there is installed an air flow rate adjusting device to the air path directed to each storage room, which is held by the foam heat insulating material.

In addition, the heater 700 is installed below the cooler 600. The heater 700 is provided to avoid the blockage of the fifth return air passage 412 due to frost formation, and is energized when necessary to generate heat.
Further, as shown in FIG. 7, the drip heater 750 is installed on the drip tray 751. Below the cooler chamber 27, a drip tray 751 for receiving the molten water at the time of defrosting is provided. The drip heater 750 is provided to avoid re-icing of the molten water received by the drip tray 751, and is energized when necessary to generate heat. The drip heater 750 is not essential, and may be used as the heater 700.

Next, the vegetable room 31 and the surroundings of the vegetable room 31 will be described.
As shown in FIG. 6, in the vegetable compartment 31, a first vegetable compartment storage case 420A and a second vegetable compartment storage case 420B are accommodated. The second vegetable compartment storage case 420B is disposed above the first vegetable compartment storage case 420A, and has a smaller volume than the first vegetable compartment storage case 420A. When the second vegetable room storage case 420B is stored in the first vegetable room storage case 420A and the door 31A is closed, the upper open end at the rear of the second vegetable room storage case 420B is the first vegetable room storage case It is located behind the upper upper free end of 420 A by a length D3.

Although the number of storage cases to be stored in the vegetable compartment 31 is not particularly limited, at least the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B may be accommodated.
The first vegetable compartment storage case 420A corresponds to the first storage case of the present invention.
The second vegetable compartment storage case 420B corresponds to the second storage case of the present invention.

Further, as shown in FIG. 6, a lid structure 430 covering substantially the entire upper open surface of the second vegetable compartment storage case 420 B is installed in the vicinity of the upper surface part of the vegetable compartment 31. The lid structure 430 has a fin portion 430A which is bent so that the portion located on the back side of the second vegetable compartment storage case 420B on the back side is directed downward. Fin portion 430A is formed by bending a part of lid structure 430 at an acute angle.
Furthermore, as shown in FIG. 6, vacuum heat insulating material 500A is disposed as a part of heat insulating material 500 before and after and above and below the vegetable compartment 31 so as to surround the front and back and above and below the vegetable compartment 31. In addition, although the vacuum heat insulating material 500A is arrange | positioned as a part of heat insulating material 500 also on the right and left of the vegetable compartment 31, it is abbreviate | omitting in FIG.

Next, the air passage configuration of the refrigerator 1 will be specifically described.
As described above, the refrigerator 1 has the blowout air passage 110 and the return air passage 140.
The outlet air path 110 is a first outlet air path 111, a second outlet air path 211a, a third outlet air path 212, a fourth outlet air path 311, a fifth outlet air path 411, and a sixth outlet air path 211b. Configured
The return air path 140 includes a first return air path 141, a second return air path 241a, a third return air path 242, a fourth return air path 312, and a fifth return air path 412.
In addition, each blow-off air path and each return air path which are explained below are formed in the back side of each storage room, ie, the space by the side of back part 50F, and each blow-off mouth and each return are the back parts It is formed in 50F.

The first blowout air path 111 functions as a cold storage room blowout air path through which cold air blown out to the cold storage room 11 flows. At a cold air inlet of the first blowout air path 111, a first damper 101, which is one of air volume control devices, is provided. The first damper 101 is located below the refrigerator compartment 11 in a front view of the refrigerator 1. The operation of the first damper 101 is controlled by the control device as described above. Thereby, the volume of cold air blown into the refrigerator compartment 11 is adjusted.

In addition, a first outlet 121 is formed in the first outlet air passage 111. The cool air flowing through the first blowout air path 111 is introduced into the cold storage room 11 via the first outlet 121. The plurality of first outlets 121 are arranged in the height direction of the refrigerator compartment 11 in a state where the refrigerator 1 is viewed from the front. In addition, although the number of objects of the 1st blower outlet 121 is not specifically limited, according to the volume of the refrigerator compartment 11, it is good to install more than one.

The second blowing air passage 211 a functions as an ice making chamber blow air passage through which cold air blown out to the ice making chamber 21 flows. At a cold air inlet of the second blowoff air passage 211a, a second damper 201a which is one of the air flow rate adjusting devices is provided. The second damper 201 a is positioned at the middle stage of the ice making chamber 21 in a state where the refrigerator 1 is viewed from the front. The operation of the second damper 201a is controlled by the control device as described above. As a result, the amount of cold air blown into the ice making chamber 21 is adjusted.

In addition, a second air outlet 221a is formed in the second air passage 211a. The cold air flowing through the second blowoff air passage 211a is introduced into the ice making chamber 21 via the second air outlet 221a. The second blowout port 221 a is located on the upper left side of the ice making chamber 21 when the refrigerator 1 is viewed from the front. In addition, the number of objects of the 2nd blower outlet 221a is not specifically limited.

The third blowing air passage 212 functions as a temperature switching chamber blowing air passage through which cold air blown out to the temperature switching chamber 22 flows. At the cold air inlet of the third blowoff air passage 212, a third damper 202, which is one of the air flow rate adjusting devices, is provided. The third damper 202 is positioned in the middle of the temperature switching chamber 22 in a state where the refrigerator 1 is viewed from the front. The operation of the third damper 202 is controlled by the control device as described above. As a result, the amount of cold air blown into the temperature switching chamber 22 is adjusted.

In addition, a third air outlet 222 is formed in the third air passage 212. The cool air flowing through the third blowoff air passage 212 is introduced into the temperature switching chamber 22 via the third air outlet 222. The third outlet 222 is located at the upper center portion of the temperature switching chamber 22 when the refrigerator 1 is viewed from the front. In addition, the number of the third outlets 222 is not particularly limited.

The fourth blowing air passage 311 functions as a vegetable room blowing air passage through which cold air blown out to the vegetable chamber 31 flows. At the cold air inlet of the fourth blowoff air path 311, a fourth damper 301, which is one of the air flow rate adjusting devices, is provided. The fourth damper 301 is located in the middle of the temperature switching chamber 22 in a state where the refrigerator 1 is viewed from the front. The operation of the fourth damper 301 is controlled by the control device as described above. Thereby, the air volume of the cold air which blows off to the vegetable compartment 31 is adjusted.

In addition, a fourth air outlet 321 is formed in the fourth air passage 311. The cool air flowing through the fourth blowoff air path 311 is introduced into the vegetable compartment 31 via the fourth blowout port 321. The fourth outlet 321 is located on the upper right side of the vegetable room 31 in a state where the refrigerator 1 is viewed from the front. The number of the fourth outlets 321 is not particularly limited.

The fifth outlet air passage 411 functions as a freezer compartment outlet air passage through which cold air blown out to the freezer compartment 41 flows. Further, the fifth blowoff air passage 411 is formed to overlap with the fifth return air passage 412 in the front-rear direction. When the refrigerator 1 is viewed from the side, the fifth outlet air passage 411 is located on the front side, and the fifth return air passage 412 is located on the back surface 50F side. A fifth outlet 421 is formed in the fifth outlet air passage 411. The cool air flowing through the fifth blowoff air path 411 is introduced into the freezer compartment 41 via the fifth blowout port 421. The fifth outlet 421 is located at the upper center of the freezer compartment 41 in a state where the refrigerator 1 is viewed from the front. The number of the fifth outlets 421 is not particularly limited.
The fifth blowoff air passage 411 corresponds to the first air passage of the present invention.

The sixth blowoff air passage 211b functions as a chilled chamber blowout air passage through which cold air blown out to a chilled chamber (not shown) flows. At the cold air inlet of the sixth blowoff air passage 211b, a sixth damper 201b which is one of the air flow rate adjusting devices is provided. The sixth damper 201 b is located at the middle stage of the ice making chamber 21 in a state where the refrigerator 1 is viewed from the front. The operation of the sixth damper 201b is controlled by the control device as described above. As a result, the amount of cold air blown into the chilled chamber is adjusted.

In addition, a sixth air outlet 221 b is formed in the sixth air passage 211 b. The cold air flowing through the sixth blowoff air passage 211b is introduced into the chilled chamber via the sixth air outlet 221b. The sixth outlet 221 b is located at the lower center of the refrigerator compartment 11 in a state where the refrigerator 1 is viewed from the front. When the chilled chamber is not installed, it is not necessary to provide the sixth blowoff air passage 211b and the sixth damper 201b. Further, the number of the sixth air outlets 221 b is not particularly limited.

The first return air path 141 functions as a cold storage room return air path through which the air used for cooling in the cold storage room 11 flows. A first return port 131 is formed in the first return air passage 141. The first return port 131 is located on the lower right side of the refrigerator compartment 11 when the refrigerator 1 is viewed from the front. In addition, the first return air path 141 is joined to the cooler chamber 27 via the first joint portion 151. Therefore, the air flowing through the first return air passage 141 is returned to the cooler 600 through the first return port 131 and the first joint portion 151.

The second return air passage 241 a functions as a cooling chamber return air passage through which the air used for cooling in the ice making chamber 21 flows. A second return port 231a is formed in the second return air path 241a. The second return port 231 a is located on the lower left side of the ice making chamber 21 when the refrigerator 1 is viewed from the front. In addition, the second return air path 241a is joined to the cooler chamber 27 via the second joining portion 251a. Therefore, the air flowing through the second return air path 241a is returned to the cooler 600 via the second return port 231a and the second joint portion 251a.

The third return air passage 242 functions as a temperature switching chamber return air passage through which the air used for cooling in the temperature switching chamber 22 flows. A third return port 232 is formed in the third return air path 242. The third return port 232 is located at the lower center of the temperature switching chamber 22 when the refrigerator 1 is viewed from the front. In addition, the third return air path 242 is joined to the cooler chamber 27 via the third joint 252. Therefore, the air flowing through the third return air path 242 is returned to the cooler 600 through the third return port 232 and the third joint 252.

The fourth return air path 312 functions as a vegetable room return air path through which the air used for cooling in the vegetable room 31 flows. A fourth return port 331 is formed in the fourth return air passage 312. The fourth return port 331 is located on the lower left side of the vegetable compartment 31 when the refrigerator 1 is viewed from the front. In addition, the fourth return air passage 312 is joined to the cooler chamber 27 via the fourth joint portion 351. Therefore, the air flowing through the fourth return air passage 312 is returned to the cooler 600 from the lower left of the cooler 600 through the fourth return port 331 and the fourth joint 351.

The fifth return air passage 412 functions as a freezer compartment return air passage through which the air used for cooling in the freezer compartment 41 flows. A fifth return port 431 is formed in the fifth return air passage 412. The fifth return port 431 is located in the upper center portion of the freezer compartment 41 in a state where the refrigerator 1 is viewed from the front. In addition, the fifth return air passage 412 is joined to the cooler chamber 27 via the fifth joining portion 451. Therefore, the air flowing through the fifth return air path 412 is returned to the cooler 600 from the lower right of the cooler 600 through the fifth return port 431 and the fifth joint 451.
The fifth return air passage 412 corresponds to the second air passage of the present invention.

The air flow around the cooler 600 will be described with reference to FIGS. 5 and 7.
The circulation of air in the refrigerator compartment 11 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the first damper 101, and flows from the lower side to the upper side of the drawing through the first blowout air path 111 to the refrigerating chamber 11 through the first outlet 121. be introduced. The cold air used in the refrigerator compartment 11 flows from the upper side to the lower side of the drawing as indicated by the arrow A1 in FIGS. 5 and 7 through the first return port 131 as the first return air path 141. It is returned to the cooler 600 via the junction 151.

The circulation of air in the ice making chamber 21 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the second damper 201a, flows through the second air passage 211a, and is introduced into the ice making chamber 21 through the second air outlet 221a. The cold air used in the ice making chamber 21 flows from the upper side to the lower side of the drawing as indicated by an arrow A2 in FIGS. 5 and 7 through the second return port 231a as the second return air path 241a. It returns to the cooler 600 through the junction 251a.

The circulation of air in the temperature switching chamber 22 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the third damper 202, flows through the third air passage 212, and is introduced into the temperature switching chamber 22 via the third air outlet 222. The cool air used in the temperature switching chamber 22 flows from the upper side to the lower side of the drawing as indicated by arrow A3 in FIGS. 5 and 7 through the third return port 232 as indicated by arrow A3 in FIGS. It is returned to the cooler 600 via the three junction 252.

The circulation of air in the vegetable room 31 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the fourth damper 301, flows through the fourth air passage 311, and is introduced into the vegetable room 31 through the fourth air outlet 321. The cold air used in the vegetable compartment 31 flows from the left side to the right side of the drawing as indicated by the arrow A4 in FIGS. 5 and 7 through the fourth return port 331 as the arrow A4 in FIGS. It is returned to the cooler 600 through the part 351.

The fourth return port 331 from the vegetable compartment 31 is formed on the lower left side diagonally to the fourth outlet 321 on the back surface 50F side of the vegetable compartment 31. The fourth return port 331 does not overlap on the front projection surface of one rectangular rectangular plate-like vacuum heat insulating material 500A1, and is located outside the front projection surface. The cool air blown out from the fourth outlet 321 is discharged from the fourth return port 331 located at the diagonal corner of the inner wall of the vegetable compartment 31 with respect to the fourth outlet 321 and is led to the cooler 600. , And circulate through the cooler 600 so as to be cooled.

The circulation of air in the freezing chamber 41 will be described.
The cold air generated by the cooler 600 flows through the fifth outlet air passage 411 and is introduced into the freezer compartment 41 via the fifth outlet 421. The cold air used in the freezing chamber 41 flows from the lower side to the upper side of the drawing as indicated by an arrow A5 in FIGS. 5 and 7 through the fifth return port 431 as indicated by arrow A5 in FIGS. It is returned to the cooler 600 via the junction 451.

Next, the vacuum heat insulating material 500A will be described.
As shown in FIG. 2, the refrigerator 1 is laid out in the order of the refrigerator compartment 11, the ice making compartment 21, the temperature switching compartment 22, the vegetable compartment 31, and the freezing compartment 41 from the top. That is, in the refrigerator 1, the storage room of the refrigeration temperature zone and the storage room of the freezing temperature zone are alternately interchanged and disposed from the top.

The bottom of the refrigerator compartment 11, in other words, the upper surface of the ice making room 21 and the temperature switching room 22, is a partition 51 which is one of the wall parts 55. The upper surface portion of the vegetable compartment 31, in other words, the bottom of the ice making chamber 21 and the temperature switching chamber 22 is a partition 53 which is one of the wall portions 55. The bottom of the vegetable compartment 31 and the upper face of the freezing compartment 41 form a partition 54 which is one of the wall parts 55. And the vacuum heat insulating material 500A is provided in the inside of each partition, and heat transfer is suppressed.

The vacuum heat insulating material 500A arrange | positioned around the vegetable compartment 31 is demonstrated, referring FIG. As described above, in the refrigerator 1, the vacuum heat insulating material 500 A is disposed so as to surround the front, rear, upper and lower sides of the vegetable compartment 31. The vacuum heat insulating material 500A disposed on the front side of the cooler 600, that is, on the back side of the vegetable compartment 31, is referred to as a vacuum heat insulating material 500A1. The vacuum heat insulating material 500A disposed on the upper surface side of the vegetable compartment 31 is referred to as a vacuum heat insulating material 500A2. The vacuum heat insulating material 500A disposed on the front side of the vegetable compartment 31 is referred to as a vacuum heat insulating material 500A3. The vacuum heat insulating material 500A disposed on the bottom side of the vegetable compartment 31 is referred to as a vacuum heat insulating material 500A4.

The vacuum heat insulating material 500A1 is obliquely disposed so that the upper end is located on the back surface 50F side of the box 50, that is, the rear, and the lower end is located on the front surface 50A side of the box 50, that is, the front in a side view. The heat transfer between the vegetable compartment 31 and the rear surface 50F side of the box 50 is suppressed. Further, the vacuum heat insulating material 500A1 is configured to have a width larger than the width of the cooler 600. The inclination angle θ of the vacuum heat insulating material 500A1 is not particularly limited, but may be adjusted in the range of 0 ° <inclination angle θ <15 °. In addition, inclination-angle (theta) is an angle of the center line L1 of 500 A of vacuum heat insulating materials, and the perpendicular line L2 to make.

The vacuum heat insulating material 500A2 is provided inside the partition 53, and suppresses heat transfer between the vegetable compartment 31 and the ice making compartment 21 and the temperature switching compartment 22. The rear end of the vacuum heat insulating material 500A2 is positioned rearward of the rear end of the upper open end of the second vegetable compartment storage case 420B housed in the vegetable compartment 31 by a length D1. In this way, the heat absorption from the ice making chamber 21 and the temperature switching chamber 22 prevents the second vegetable chamber storage case 420B from becoming a low temperature.

However, although the vacuum heat insulating material 500A2 is provided, it is difficult to cover the entire width and depth of the vegetable compartment 31 with the vacuum heat insulating material 500A2. Therefore, the heat absorption amount from the storage room of the frozen temperature zone is increased around the front and rear ends and the left and right ends of the vegetable compartment 31. Further, the vacuum heat insulating material 500A2 is a resin bag made of metal such as aluminum vapor deposited, or a resin bag made of metal foil, and has a core material made of glass fiber or the like. After vacuum packaging, the vacuum insulation material 500A generally has an ear that is the end of the bag, and is folded and installed. Therefore, the vacuum heat insulating material 500A2 causes the heat transport of the metal layer, that is, a heat bridge, and the heat insulating effect around the front and rear ends and the left and right ends of the vacuum heat insulating material 500A2 is caused by the heat insulating effect of the center It tends to be inferior to it.

Furthermore, when the air passage component is provided on the back surface 50F side of the box 50, the partition 53 containing the vacuum heat insulating material 500A2 is assembled after the air passage component is attached to the box 50 and then assembled. It will be easier. However, in this case, the air path component and the partition 53 must be joined, and the partition 53 and the left and right side walls of the box 50 must be joined, which may not completely shut off the cold air leak.
Therefore, it is assumed that the front and rear, right and left ends of the partition 53 become low in temperature, and water evaporated from the vegetables stored in the vegetable compartment 31 may locally condense, or depending on the degree, frost or freeze. .

Therefore, in the refrigerator 1, by providing the lid structure 430, it is possible to confine water evaporated from the vegetables stored in the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B as much as possible. Moreover, in the refrigerator 1, by providing the lid structure 430, it is possible not only to confine water but to keep the inside of the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B at high humidity. Therefore, according to the refrigerator 1, it is possible to further suppress the transpiration from the vegetables stored in the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B, which is disadvantageous for the user such as condensation or frost on the partition 53 etc. It has become possible to suppress the occurrence of various phenomena.
Note that the air path components include equipment for forming the blow air path 110 and the return air path 140, and an air volume adjustment device.

The vacuum heat insulating material 500A3 is provided in the inside of the door portion 31A of the vegetable compartment 31, and suppresses heat transfer between the vegetable compartment 31 and the outside of the refrigerator 1.
The vacuum heat insulating material 500A4 is provided inside the partition 54, and suppresses the heat transfer between the vegetable compartment 31 and the freezing compartment 41. The rear end of the vacuum heat insulating material 500A4 is positioned rearward of the rear end of the bottom surface of the first vegetable compartment storage case 420A housed in the vegetable compartment 31 by a length D2. By this, the heat absorption from the freezing chamber 41 suppresses the temperature of the first vegetable chamber storage case 420A from becoming low.

As described above, in the refrigerator 1, the vacuum heat insulating material 500 A 2 is installed in the partition 53, and the vacuum heat insulating material 500 A 4 is installed in the partition 54. By doing so, the inside of the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B of the vegetable compartment 31 becomes cold due to heat absorption from the storage compartments of the frozen temperature zone located above and below the vegetable compartment 31 To suppress.

Next, the relationship between the vacuum heat insulating material 500A1 and a part of the air circulation path 80 will be described.
The vacuum heat insulating material 500A1 is installed on the front side of the cooler 600. Further, the lower end of the vacuum heat insulating material 500A1 is positioned on the side of the front surface 50A of the box 50, and the upper end thereof is fixed in an inclined manner on the side of the rear surface 50F of the box 50. Furthermore, the vacuum heat insulating material 500A1 is configured to have a width larger than the width of the cooler 600.

And as shown in FIG. 5, the 1st return air path 141 is formed in the right side of the cooler 600 which deviated from the width direction of vacuum heat insulating material 500A. Further, the third return air path 242 and the fourth return air path 312 are formed in front of the first return air path 141. The left side of the cooler 600 constitutes a wall with the vegetable compartment 31 and a part thereof functions as a fourth return air passage 312.

That is, in the refrigerator 1, the first return air passage 141 is formed outside the width of the vacuum heat insulating material 500A1, and therefore, the vacuum heat insulating material 500A1 formed in a rectangular plate shape can be used. If such a vacuum heat insulating material 500A1 is used, there is no need to chamfer and punch the corner portions of the vacuum heat insulating material 500A1, or there is no need to form a large number of vacuum heat insulating materials 500A1. Therefore, according to the refrigerator 1, it is possible to suppress an increase in processing and manufacturing costs. Therefore, the refrigerator 1 is easy to assemble and has good manufacturing efficiency.

A fifth blowoff air passage 411 is formed on the back side of the vacuum heat insulating material 500A1 and in the widthwise projection range of the vacuum heat insulating material 500A1 so as to be substantially parallel to the inclination of the vacuum heat insulating material 500A1. Furthermore, a fifth return air passage 412 is formed on the back side of the fifth air passage 411. The fifth blowoff air passage 411 and the fifth return air passage 412 are configured to have the same width. When the refrigerator 1 is viewed from the front, the fifth blowoff air passage 411 and the fifth return air passage 412 are arranged to overlap. The fifth return air passage 412 is configured to be joined to the cooler chamber 27 so that air flows in from the lower end of the front surface of the cooler 600 to the middle stage. The width of the fifth outlet air passage 411 and the width of the fifth return air passage 412 do not have to be completely the same.

In a general refrigerator, when the vacuum heat insulating material on the back side of the vegetable compartment is vertically disposed, the position of the lower end and the position of the upper end match in the depth direction of the box. Therefore, neither the upper nor the lower space on the back side of the vegetable room can be expanded, and an air passage must be formed in the space, and only a complicated air passage configuration can be adopted. On the other hand, in the refrigerator 1, since the vacuum heat insulating material 500A1 is inclined, the space above the vegetable compartment 31, that is, the volume of the vegetable compartment 31 can be expanded. That is, according to the refrigerator 1, the depth of the upper part of the vegetable compartment 31 can be made into a deep structure.

In this part, the movable second vegetable compartment storage case 420B is accommodated. The inclined arrangement of the vacuum heat insulating material 500A1 makes it possible to expand the space above the vegetable compartment 31, but on the other hand, the first vegetable compartment storage case 420A needs to have a shape corresponding to the inclined arrangement of the vacuum heat insulating material 500A. is there. That is, although the storage volume of the first vegetable compartment storage case 420A can be expanded, it may lead to a shape that impairs the convenience of the user. On the other hand, in the refrigerator 1, by arranging the first vegetable room storage case 420A and the second vegetable room storage case 420B in an overlapping manner, it is possible to reduce the volume invalid for storage, and organizeability according to the food size Improvements can also be made.

Further, by disposing the vacuum heat insulating material 500A1 in an inclined manner, the space on the back surface 50F side of the vegetable compartment 31 of the box 50 can be enlarged. Therefore, the fifth blowoff air passage 411 and the fifth return air passage 412 located on the back surface 50F side of the vegetable compartment 31 can be linearly configured. Therefore, it is possible to reduce the bending of the fifth blowoff air passage 411 and the fifth return air passage 412 to the freezer compartment 41 most requiring the cooling capacity and the change of the air passage area, and to reduce the pressure loss. Furthermore, the fifth return air passage 412 can be formed so that air can flow from the lower end to the middle of the front surface of the cooler 600 and can flow air to the front front edge of the cooler 600 to enhance the heat exchange efficiency of the cooler 600 It becomes possible.

<Effect of the refrigerator 1>
As described above, the refrigerator 1 is disposed so that the vacuum heat insulating material 500A1 is inclined so that the lower end is located on the front face 50A side and the upper end is located on the back face 50F side. Can be expanded.

In the refrigerator 1, the rear end of the vacuum heat insulating material 500A4 is positioned closer to the back portion 50F than the rear end of the bottom of the first vegetable compartment storage case 420A, and the rear end of the vacuum heat insulator 500A2 is a second vegetable compartment storage case It is located closer to the back surface 50F than the upper rear end of the 420B.
Therefore, according to the refrigerator 1, it is suppressed that the 1st vegetable compartment storage case 420A and the 2nd vegetable compartment storage case 420B become low temperature by the heat absorption from the icemaker 21, the temperature switching chamber 22, and the freezer compartment 41. ing.

The refrigerator 1 is configured such that the fifth blowoff air passage 411 and the fifth return air passage 412 are formed so as to overlap in the front-rear direction, and the fifth return air passage 412 returns air from the lower end to the middle of the front of the cooler 600 It is done.
Therefore, according to the refrigerator 1, it is possible to enhance the heat exchange efficiency of the cooler 600.

In the refrigerator 1, a fin portion 430A is formed, and a lid structure 430 that covers the upper open surface of the second vegetable compartment storage case 420B is provided.
Therefore, according to the refrigerator 1, not only water can be confined in the vegetable compartment 31, but also the inside of the first vegetable compartment storage case 420A and the second vegetable compartment storage case 420B can be maintained at high humidity.

The refrigerator 1 is laid out in the order of the ice making room 21, the vegetable room 31, and the freezing room 41 from the top, so that the convenience of the user can be improved while maintaining the heat insulation effect.

Second Embodiment
FIG. 8 is a cross-sectional view schematically showing an enlarged cross section of a part of a refrigerator 1A according to a second embodiment of the present invention. A refrigerator 1A according to a second embodiment of the present invention will be described based on FIG. FIG. 8 corresponds to FIG. 6 shown in the first embodiment. In FIG. 8, the flow of air is indicated by arrows.
In the second embodiment, differences from the first embodiment will be mainly described, and the same parts as the first embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

In the second embodiment, the configuration of the fifth outlet air path 411 is different from the fifth outlet air path 411 described in the first embodiment. In order to distinguish it from the fifth outlet air path 411 of the first embodiment for the sake of convenience, the second embodiment will be described as the fifth outlet air path 411 a. The other configuration of the second embodiment is as described in the first embodiment. However, as shown in FIG. 8, in the freezer compartment 41, a first freezer compartment storage case 440A and a second freezer compartment storage case 440B are accommodated.

The second freezer compartment storage case 440B is disposed above the first freezer compartment storage case 440A, and has a smaller volume than the first freezer compartment storage case 440A. When the second freezer compartment storage case 440B is accommodated in the first freezer compartment storage case 440A and the door 31A is closed, the upper open end at the rear of the second freezer compartment storage case 440B is the first freezer compartment storage case It is located forward of the rear upper free end of 440A. Although the number of storage cases stored in the freezing chamber 41 is not particularly limited, at least the first freezing chamber storage case 440A and the second freezing chamber storage case 440B may be stored.

The fifth blowoff air passage 411a functions as a freezer compartment blowout air passage through which cold air blown out to the freezer compartment 41 flows, similarly to the fifth blowoff air passage 411 described in the first embodiment. The fifth blowoff air passage 411 a is branched in the freezing chamber 41. One branched fifth air passage 411a is referred to as a lower fifth air passage 411a-1, and the other branched fifth air passage 411a is referred to as an upper fifth air passage 411a-2.

The lower fifth blowoff air passage 411 a-1 functions as a freeze room blow air passage through which cold air is blown out to the first freezer compartment storage case 440 A of the freezer compartment 41. A blowout port (not shown) is formed in the lower fifth blowoff air path 411a-1. The cool air flowing through the lower fifth blowoff air path 411a-1 is introduced into the first freezer compartment storage case 440A of the freezer compartment 41 via the blowout port. The outlet of the lower fifth air outlet 411a-1 may be formed at a lower position than the outlet of the upper fifth air outlet 411a-2 when the refrigerator 1A is viewed from the front. The number of outlets of the lower fifth air outlet 411a-1 is not particularly limited.

The upper fifth air passage 411 a-2 functions as a freezer air passage, through which cold air is blown out to the second freezer storage case 440 B of the freezer 41. A blowout port (not shown) is formed in the upper fifth blowoff air passage 411a-2. The cool air flowing through the upper fifth air duct 411a-2 is introduced into the second freezer compartment storage case 440B of the freezer compartment 41 through the outlet. The outlet of the upper fifth air passage 411a-2 may be formed above the outlet of the lower fifth air passage 411a-1 when the refrigerator 1A is viewed from the front. The number of outlets of the upper fifth air outlet 411a-2 is not particularly limited.

The circulation of air in the freezing chamber 41 will be described.
The cold air generated by the cooler 600 flows through the fifth outlet air passage 411 and is branched into the lower fifth air outlet 411a-1 and the upper fifth air outlet 411a-2.
The cool air flowing through the lower fifth air outlet 411a-1 is introduced into the freezer compartment 41 through the outlet formed in the fifth lower air outlet 411a-1. The cold air introduced into the freezer compartment 41 is guided to the first freezer compartment storage case 440A, and cools the food and the like stored in the first freezer compartment storage case 440A. The cool air used in the freezer compartment 41 flows from the lower side to the upper side of the drawing as shown in FIG. 8 through the fifth return air passage 412 through the non-illustrated return port, and is returned to the cooler 600.

The cool air flowing through the upper fifth air outlet 411a-2 is introduced into the freezer compartment 41 through the outlet formed in the fifth upper air outlet 411a-2. The cold air introduced into the freezer compartment 41 is guided to the second freezer compartment storage case 440B, and cools the food and the like stored in the second freezer compartment storage case 440B. The cold air used in the freezing room 41 joins the cold air used for cooling in the first freezing room storage case 440A, and the fifth return air path 412 is shown in FIG. 8 through the return port (not shown). It flows from the lower side to the upper side of the drawing and is returned to the cooler 600.

<The effect that refrigerator 1A plays>
As described above, since the refrigerator 1A has the fifth blowoff air passage 411 branched into two in the width direction of the vacuum heat insulating material 500A1, the refrigerator 1A is further branched into two in the upper and lower directions. It can introduce and the cooling effect of freezer compartment 41 can be improved.

Third Embodiment
FIG. 9 is a schematic diagram for explaining an air circulation path 80 of the refrigerator 1B according to the third embodiment of the present invention. FIG. 10 is a cross-sectional view schematically showing a ZZ cross section of FIG. FIG. 11 is an explanatory view schematically showing the flow of air in the refrigerator 1B. The refrigerator 1B will be described based on FIGS. 9 to 11. In FIGS. 9 to 11, the flow of air is indicated by arrows. In addition, in FIG. 9, the case where the chilled room is installed in the refrigerator compartment 11 is shown as an example.
In the third embodiment, differences from the first embodiment and the second embodiment will be mainly described, and the same parts as the first embodiment and the second embodiment will be assigned the same reference numerals and descriptions thereof will be omitted. It shall be.

The air passage configuration of the refrigerator 1B will be specifically described.
Similar to the refrigerator 1 according to the first embodiment, the refrigerator 1 B has a blowout air passage 110 and a return air passage 140.

As shown in FIG. 9, the fifth blowoff air path 411 is branched into two on the back surface 50F side of the vegetable compartment 31 when the refrigerator 1B is viewed from the front. One branched fifth air passage 411 is referred to as a left fifth air passage 411A, and the other branched fifth air passage 411 is referred to as a right fifth air passage 411B.

A fifth air outlet 421A is formed in the left fifth air outlet 411A. The cool air flowing through the left fifth blowoff air path 411A is introduced into the freezer compartment 41 via the fifth blowout port 421A. The fifth outlet 421A is located on the upper left side of the upper part of the freezer compartment 41 when the refrigerator 1B is viewed from the front. The number of the fifth outlets 421A is not particularly limited.

A fifth air outlet 421B is formed in the right fifth air outlet path 411B. The cool air flowing through the fifth right air outlet path 411B is introduced into the freezer compartment 41 through the fifth outlet 421B. The fifth outlet 421B is located on the upper right side of the freezer compartment 41 in a state where the refrigerator 1B is viewed from the front. In addition, the number of objects of the 5th blower outlet 421B is not specifically limited.

The first return air path 141 is joined to the vegetable compartment 31 via the air outlet 551. Therefore, the air flowing through the first return air path 141 is introduced into the vegetable compartment 31 via the first return port 131 and the air outlet 551. The cold introduced into the vegetable compartment 31 is used to cool the vegetable compartment 31 and then returned to the cooler 600 via the fourth return air passage 312.
The third return port 232 is located on the lower right side of the temperature switching chamber 22 when the refrigerator 1B is viewed from the front.
The fourth return port 331 is located at the lower center of the vegetable compartment 31 when the refrigerator 1B is viewed from the front.

The fifth return air passage 412 is configured to correspond to the number of branches of the fifth outlet air passage 411. Further, the fifth return air passage 412 is formed so as to overlap with the fifth blow air passage 411 in the front-rear direction. One branched fifth return air passage 412 is referred to as a left fifth return air passage 412A, and the other branched fifth return air passage 412 is referred to as a right fifth return air passage 412B.

A fifth return port 431A is formed in the left fifth return air path 412A. The fifth return port 431A is located on the upper left side of the freezer compartment 41 in a state where the refrigerator 1B is viewed from the front. Further, the left fifth return air path 412A is joined to the cooler chamber 27 via the fifth joining portion 451A. Therefore, the air flowing through the left fifth return air path 412A is returned to the cooler 600 through the fifth return port 431A and the fifth joint 451A.

A fifth return port 431B is formed in the right fifth return air path 412B. The fifth return port 431B is located on the upper right side of the freezer compartment 41 in a state where the refrigerator 1B is viewed from the front. Further, the right fifth return air path 412B is joined to the cooler chamber 27 via the fifth joining portion 451B. Therefore, the air flowing through the right fifth return air path 412B is returned to the cooler 600 through the fifth return port 431B and the fifth joint 451B.

The air flow around the cooler 600 will be described with reference to FIGS. 9 and 11.
The circulation of air in the refrigerator compartment 11 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the first damper 101, and flows from the lower side to the upper side of the drawing through the first blowout air path 111 to the refrigerating chamber 11 through the first outlet 121. be introduced. The cool air used in the refrigerator compartment 11 flows from the upper side to the lower side of the drawing through the first return air path 141 through the first return port 131 and is introduced into the vegetable compartment 31 through the air outlet 551.

The circulation of air in the ice making chamber 21 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the second damper 201a, flows through the second air passage 211a, and is introduced into the ice making chamber 21 through the second air outlet 221a. Cold air used in the ice making chamber 21 flows from the upper side to the lower side of the drawing through the second return air path 241a through the second return port 231a, and is returned to the cooler 600 through the second joint portion 251a. .

The circulation of air in the temperature switching chamber 22 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the third damper 202, flows through the third air passage 212, and is introduced into the temperature switching chamber 22 via the third air outlet 222. The cold air used in the temperature switching chamber 22 flows from the upper side to the lower side of the drawing through the third return air path 242 through the third return port 232 and is returned to the cooler 600 through the third joint 252. Be

The circulation of air in the vegetable room 31 will be described.
The volume of cold air generated by the cooler 600 is adjusted by the fourth damper 301, flows through the fourth air passage 311, and is introduced into the vegetable room 31 through the fourth air outlet 321. The cool air used in the vegetable compartment 31 flows from the lower side to the upper side of the drawing through the fourth return air path 312 through the fourth return port 331 and is returned to the cooler 600 through the fourth joint 351. .
The cold air introduced into the vegetable compartment 31 via the cold storage compartment 11 is also returned to the cooler 600 via the fourth return port 331 and the fourth joint 351.

The fourth return port 331 does not overlap on the front projection surface of one rectangular rectangular plate-like vacuum heat insulating material 500A1, and is located on the lower outside than the front projection surface. The cool air blown out from the fourth outlet 321 is discharged from the fourth return port 331 located at the lower central portion of the vegetable compartment 31, led to the cooler 600, and passed through the cooler 600 to be cooled again. As it is circulating.

The circulation of air in the freezing chamber 41 will be described.
The cold air generated by the cooler 600 flows through the fifth outlet air path 411 and is branched into the left fifth outlet air path 411A and the right fifth outlet air path 411B. The cold air branched to the left fifth air outlet path 411A is introduced into the freezer compartment 41 through the fifth air outlet 421A. The cold air branched into the right fifth air outlet path 411B is introduced into the freezer compartment 41 via the fifth outlet 421B. The cold air used in the freezer compartment 41 flows from the lower side to the upper side of the drawing through the fifth left return air passage 412A and the fifth right return air passage 412B via the fifth return port 431A and the fifth return port 431B. , And is returned to the cooler 600 via the fifth bonding portion 451A and the fifth bonding portion 451B.

Next, the vacuum heat insulating material 500A will be described.
Similar to the refrigerator 1 according to the first embodiment, the refrigerator 1B is laid out from the top in the order of the refrigerator compartment 11, the ice making compartment 21, the temperature switching compartment 22, the vegetable compartment 31, and the freezing compartment 41. That is, in the refrigerator 1B, the storage room of the refrigerated temperature zone and the storage room of the frozen temperature zone are alternately interchanged and arranged from the top.

The vacuum heat insulating material 500A1 is disposed so that the longitudinal direction extends in the vertical direction in a side view, and suppresses the heat transfer between the vegetable compartment 31 and the back surface 50F side of the box 50. Further, the vacuum heat insulating material 500A1 is configured to have a width larger than the width of the cooler 600.

The vacuum heat insulating material 500A2 is provided inside the partition 53, and suppresses heat transfer between the vegetable compartment 31 and the ice making compartment 21 and the temperature switching compartment 22. The rear end of the vacuum heat insulating material 500A2 is located rearward of the rear end of the upper open end of the second vegetable compartment storage case 420B housed in the vegetable compartment 31. By this, the heat absorption from the freezing chamber 41 suppresses the temperature of the first vegetable chamber storage case 420A from becoming low.

The vacuum heat insulating material 500A3 is provided in the inside of the door portion 31A of the vegetable compartment 31, and suppresses the heat transfer between the vegetable compartment 31 and the outside of the refrigerator 1B.
The vacuum heat insulating material 500A4 is provided inside the partition 53, and suppresses the heat transfer between the vegetable compartment 31 and the freezing compartment 41. The rear end of the vacuum heat insulating material 500A4 is positioned rearward of the rear end of the bottom surface of the first vegetable compartment storage case 420A housed in the vegetable compartment 31 by a length D2. In this way, the heat absorption from the ice making chamber 21 and the temperature switching chamber 22 prevents the first vegetable chamber storage case 420A from becoming a low temperature.

Next, the relationship between the vacuum heat insulating material 500A1 and a part of the air circulation path 80 will be described.
The vacuum heat insulating material 500A1 is installed on the front side of the cooler 600. Further, the vacuum heat insulating material 500A1 is configured to have a width larger than the width of the cooler 600. Therefore, in the refrigerator 1B, a high heat insulation effect will be obtained.

Then, as shown in FIG. 9, a first return air path 141 is formed on the right side surface of the cooler 600 which is deviated from the width direction of the vacuum heat insulating material 500A. The lower surface of the cooler 600 constitutes a wall with the vegetable compartment 31 and a part thereof functions as a fourth return air passage 312.

That is, in the refrigerator 1B, since the first return air passage 141 is formed outside the width of the vacuum heat insulating material 500A1, the vacuum heat insulating material 500A1 configured in a rectangular plate shape can be used.

As described above, the vacuum heat insulating material 500A1 is vertically disposed, and the cooler 600 is installed on the back side of the vacuum heat insulating material 500A1. Moreover, in the refrigerator 1B, the fifth outlet air path 411 and the fifth return air path 412 are branched, and the fourth return port 331 is formed while branched. That is, the fourth return port 331 is a front view of the refrigerator 1B, and the fifth left outlet air passage 411A and the fifth left return air passage 412A, and the fifth right outlet air passage 411B and the right fifth return air passage 412B. It is located between Therefore, according to the refrigerator 1B, the space on the back portion 50F side of the vegetable compartment 31 is effectively used.

In a general refrigerator, when the vacuum heat insulating material on the back side of the vegetable compartment is vertically disposed, the position of the lower end and the position of the upper end match in the depth direction of the box. Therefore, neither the upper nor the lower space on the back surface 50F side of the vegetable room can be expanded, and an air path must be formed in the space, and only a complicated air path configuration can be adopted.
On the other hand, in the refrigerator 1B, the fifth blowoff air passage 411 and the fifth return air passage 412 are branched while the vacuum heat insulating material 500A1 is vertically disposed, and the fourth return port 331 is formed while branching. The space on the back portion 50F side of the vegetable compartment 31 can be expanded without complicating the air path configuration.

The fourth return air passage 312 and the fifth return air passage 412 can be formed so that the air flows in from the lower end of the cooler 600, can flow the air to the front front edge of the cooler 600, and the heat exchange efficiency of the cooler 600 It will be possible to raise

<Effect produced by the refrigerator 1B>
As described above, the refrigerator 1B provides the fifth blowout air passage 411 and the fifth return air passage 412 behind the vacuum heat insulating material 500A1, and the fifth blowout air passage 411 and the fifth return air passage 412 , And are formed so as to overlap front and back, and are branched into two in the width direction of the vacuum heat insulating material 500A1.
Therefore, according to the refrigerator 1B, the air passage configuration can be simplified without complicating the air passage configuration.

In the refrigerator 1B, when the fourth return port 331 is viewed from the front, the left side fifth outlet air path 411A and the left side fifth return air path 412A branched from the rear portion 50F of the vegetable compartment 31, and the right side fifth It is formed between the blowout air passage 411B and the right fifth return air passage 412B.
Therefore, according to the refrigerator 1B, the space on the back surface 50F side of the vegetable compartment 31 can be effectively used without complicating the air path configuration.

In the refrigerator 1B, since the vacuum heat insulating material 500A1 has a width larger than the width of the cooler 600, a high heat insulating effect can be obtained.

Fourth Embodiment
FIG. 12 is a cross-sectional view schematically showing an enlarged cross section of a part of a refrigerator 1C according to a fourth embodiment of the present invention. Fourth Embodiment A refrigerator 1C according to a fourth embodiment of the present invention will be described based on FIG. FIG. 12 corresponds to FIG. 10 shown in the third embodiment. In FIG. 12, the flow of air is indicated by arrows.
In the fourth embodiment, differences from the first to third embodiments will be mainly described, and the same parts as the first to third embodiments are assigned the same reference numerals and descriptions thereof will be omitted. It shall be.

In the fourth embodiment, the configuration of the fifth outlet air path 411 is different from the fifth outlet air path 411 described in the third embodiment. In order to distinguish it from the fifth outlet air path 411 of the third embodiment for the sake of convenience, the fourth embodiment will be described as the fifth outlet air path 411C. The other configuration of the fourth embodiment is as described in the third embodiment. However, as shown in FIG. 12, the first freezer compartment storage case 440 A and the second freezer compartment storage case 440 B are accommodated in the freezer compartment 41.

Similar to the fifth outlet air passage 411 described in the first embodiment, the fifth outlet air passage 411C functions as a freezer room outlet air passage through which cold air blown out to the freezer compartment 41 flows. The fifth outlet air passage 411 is branched into a left side fifth outlet air passage 411A and a right side fifth outlet air passage 411B. And in the refrigerator 1C, the left side fifth outlet air path 411A and the right side fifth outlet air path 411B are further branched. Here, it is assumed that the fifth outlet air passage 411C is the fifth left outlet air passage 411A.

As shown in FIG. 12, the fifth blowoff air path 411 C is branched in the freezer compartment 41. One branched fifth air passage 411C is referred to as a lower fifth air passage 411C-1, and the other branched fifth air passage 411C is referred to as an upper fifth air passage 411C-2.

The lower fifth blowoff air passage 411C-1 functions as a freeze room blowoff air passage through which cold air is blown out to the first freeze room storage case 440A of the freeze room 41. A blowout port (not shown) is formed in the lower fifth blowoff air path 411C-1. The cool air flowing through the lower fifth blowoff air path 411C-1 is introduced into the first freezer compartment storage case 440A of the freezer compartment 41 via the blowout port. The outlet of the lower fifth air passage 411C-1 may be formed at a lower position than the outlet of the upper fifth air passage 411C-2 when the refrigerator 1C is viewed from the front. The number of outlets of the lower fifth air outlet path 411C-1 is not particularly limited.

The upper fifth air passage 411C-2 functions as a freezer air passage, through which cold air is blown out to the second freezer storage case 440B of the freezer 41. A blowout port (not shown) is formed in the upper fifth blowoff air passage 411C-2. The cool air flowing through the upper fifth air duct 411C-2 is introduced into the second freezer compartment storage case 440B of the freezer compartment 41 through the outlet. The outlet of the upper fifth air passage 411C-2 may be formed above the outlet of the lower fifth air passage 411C-1 when the refrigerator 1C is viewed from the front. The number of outlets of the upper fifth air duct 411C-2 is not particularly limited.

The circulation of air in the freezing chamber 41 will be described.
The cold air generated by the cooler 600 flows through the fifth outlet air path 411C, and is branched into the lower fifth air outlet 411C-1 and the upper fifth air outlet 411C-2.
The cool air flowing through the lower fifth blowoff air passage 411C-1 is introduced into the freezer compartment 41 through the blowout port formed in the lower fifth blowoff air passage 411C-1. The cold air introduced into the freezer compartment 41 is guided to the first freezer compartment storage case 440A, and cools the food and the like stored in the first freezer compartment storage case 440A. The cold air used in the freezing chamber 41 flows from the lower side to the upper side of the drawing as shown in FIG. 8 through the fifth return air passage 412 via the fifth return port 431A, and is returned to the cooler 600.

The cold air flowing through the upper fifth air passage 411C-2 is introduced into the freezer compartment 41 through the outlet formed in the fifth upper air passage 411C-2. The cold air introduced into the freezer compartment 41 is guided to the second freezer compartment storage case 440B, and cools the food and the like stored in the second freezer compartment storage case 440B. The cold air used in the freezing room 41 joins the cold air used for cooling in the first freezing room storage case 440A, and the fifth return air path 412 is shown in FIG. 8 through the fifth return port 431A. It flows from the lower side to the upper side of the drawing and is returned to the cooler 600.

<The effect of the refrigerator 1C>
As described above, after the fifth outlet air passage 411 is branched into two in the width direction of the vacuum heat insulating material 500A1, the refrigerator 1C is further branched into two in the upper and lower directions. It can introduce and the cooling effect of freezer compartment 41 can be improved.

As mentioned above, although embodiment of this invention was divided and demonstrated into four embodiment, suppose that each embodiment can be combined suitably.

DESCRIPTION OF SYMBOLS 1 refrigerator, 1A refrigerator, 1B refrigerator, 1C refrigerator, 11 refrigerator compartment, 11A door part, 21 ice making room, 21A door part, 22 temperature switching room, 22A door part, 27 cooler room, 31 vegetable room, 31A door part, 31B floor surface, 41 freezer compartment, 41a door, 50 box, 50A front face, 50B top face, 50C bottom face, 50D right side face, 50E left side face, 50F back face, 51 partitions, 51A partitions, 51B partitions, 52 Partition, 53 Partition, 53A Partition, 53B Partition, 54 Partition, 55 Wall, 56 Sheet Metal, 57 Sheet Metal, 57 Inner Box, 70 Refrigerant Circuit, 71 Compressor, 72 Air Cooling Condenser, 73 Heat Dissipation Pipe, 74 Dewdrop Prevention Pipe, 75 Dryer , 76 pressure reducing device, 80 air circulation path, 101 first damper, 11 Outlet air path, 111 first outlet air path, 121 first outlet, 131 first return port, 140 return air path, 141 first return air path, 151 first joint portion, 201a second damper, 201b sixth damper , 202 third damper, 211 a second outlet air path, 211 b sixth outlet air path, 212 third outlet air path, 221 a second outlet, 221 b sixth outlet, 222 third outlet, 231 a second return outlet , 232 third return port, 241a second return air path, 242 third return air path, 251a second joint portion, 252 third joint portion, 301 fourth damper, 311 fourth blow air path, 312 fourth return air path Road, 321 fourth outlet, 331 fourth return port, 351 fourth joint, 411 fifth outlet air path, 411A left fifth outlet air path, 411B right fifth outlet Airway, 411C fifth outlet air path, 411C-1 lower fifth outlet air path, 411C-2 upper fifth outlet air path, 411a fifth outlet air path, 411a-1 lower fifth outlet air path, 411a-2 Upper fifth air outlet, 412 fifth return air channel, 412A left fifth return air channel, 412B right fifth return air channel, 420A first vegetable room storage case, 420B second vegetable room storage case, 421 fifth blow Exit, 421A fifth outlet, 421B fifth outlet, 430 lid structure, 430A fin portion, 431 fifth return port, 431A fifth return port, 431B fifth return port, 440A first freezer compartment storage case, 440B 2nd freezer compartment storage case, 451 fifth joint, 451A fifth joint, 451B fifth joint, 500 heat insulator, 500A vacuum heat insulator, 500A1 Vacuum insulation, 500A2 vacuum insulation, 500A3 vacuum insulation, 500A4 vacuum insulation, 551 air outlet, 600 cooler, 700 heaters, 750 drip heaters, 751 drip trays, 800 blowers.

Claims

A first storage room of a freezing temperature zone,
The second storage room of the freezing temperature zone,
A third storage compartment of a refrigerated temperature zone, having a front part and a back part, disposed between the first storage compartment and the second storage compartment;
Vacuum heat insulating material provided on each wall including the front part and the back part and defining the third storage chamber;
The vacuum heat insulating material provided on the back surface of the third storage chamber is
The lower end is located in the said front part side, and it is arrange | positioned inclined so that the upper end may be located in the said back part side. Refrigerator.
In the third storage room,
A first storage case,
A second storage case disposed above the first storage case and having a smaller volume than the first storage case;
With the door of the third storage chamber closed,
The rear end of the vacuum heat insulating material provided at the bottom of the third storage chamber is:
It is located on the rear surface side with respect to the rear end of the bottom surface of the first storage case housed in the third storage chamber,
The rear end of the vacuum insulation provided on the top surface of the third storage chamber is:
The refrigerator according to claim 1, wherein the refrigerator is located closer to the rear side than an upper rear end of a second storage case stored in the third storage room.
A cooler provided on the back side of the second storage chamber;
The first air passage for introducing air from the cooler to the second storage chamber and the second storage chamber are used on the back side of the vacuum heat insulating material provided on the back surface of the third storage chamber. A second air path for returning the heated air to the cooler;
The first air path and the second air path are
It is formed by overlapping front and back,
The refrigerator according to claim 1 or 2, wherein the second air passage is configured to return air from the lower end of the front surface of the cooler to the middle stage.
In the third storage room,
The refrigerator according to claim 2, further comprising: a lid structure covering an upper open surface of the second storage case.
The lid structure is
The refrigerator according to claim 4, further comprising a fin portion in which a portion positioned on the rear side of the rear end of the second storage case is bent downward.
The first air path is
The refrigerator according to claim 3, wherein after being bifurcated in the width direction of the vacuum heat insulating material, it is further bifurcated up and down.
The first storage room is an ice making room,
The second storage room is a freezing room,
The third storage room is a vegetable room,
The refrigerator according to any one of claims 1 to 6, wherein the ice making room, the vegetable room, and the freezing room are laid out in order from the top.