TW201812234A - Refrigerator - Google Patents

Abstract

Provided is a refrigerator comprising: a refrigerating compartment that is set to a refrigerating temperature zone and accommodates objects to be cooled; a supercooling and cold storage compartment that is provided inside the refrigerating compartment and that is for keeping the objects to be cooled at a supercooling temperature equal to or lower than the freezing temperature; a vegetable compartment that is provided below the refrigerating compartment, that is adjacent to the supercooling and cold storage compartment, and that has a set temperature higher than that of the refrigerating compartment; a boundary wall provided between the vegetable compartment and the supercooling and cold storage compartment; and a heater that is installed at the boundary wall below the supercooling and cold storage compartment and that is for heating the objects to be cooled in the supercooling and cold storage compartment.

Description

   Refrigerator   

The present invention relates to a refrigerator that can be stored under supercooling.

In the past, there has been a high demand for storing each food at an optimum temperature. Therefore, refrigerators having a plurality of temperature compartments have been proposed (see Patent Documents 1 and 2). According to the refrigerators of Patent Documents 1 and 2, the amount of cold air can be individually set for the upper low temperature container and the lower low temperature container in the refrigerating room, and different temperatures can be set for the air in the upper low temperature container and the air in the lower low temperature container. In addition, there has also been proposed a refrigerator in which a temperature-controlled heater is buried in a junction wall in order to perform supercooling preservation (see Patent Document 3).

Advance technical literature

Patent Literature:

Patent Document 1: Japanese Patent Laid-Open No. 2001-330361

Patent Document 2: Japanese Patent No. 3571549

Patent Document 1: Japanese Patent No. 5847235

The refrigerators described in Patent Documents 1 and 2 describe a two-stage low-temperature container for cooling by cold air flowing into the refrigerating chamber for cooling. Only in this case, the temperature of the air between the containers varies greatly and there is no heating program. It is not possible to achieve overcooling.

In addition, in the refrigerator described in Patent Document 3, there is a freezer compartment below the supercooled cold storage compartment. In order to prevent the supercooled cold storage compartment from being excessively cooled due to heat transfer, a heater buried in the junction wall is configured to cover the entire case. size. Therefore, the power consumption may increase and the cost of the heater may increase, and the heat of the heater may not be used efficiently.

In order to solve the above-mentioned problem, the present invention provides a refrigerator capable of suppressing the electric conduction rate and the size of a heater during supercooled storage of an object to be cooled and efficiently performing supercooled storage.

The refrigerator according to the present invention includes: a refrigerating compartment set in a refrigerating temperature zone to store objects to be cooled; a supercooled refrigerating compartment provided in the refrigerating room to keep the objects to be cooled below a freezing temperature; and a vegetable compartment provided at The lower part of the refrigerating room is adjacent to the supercooling cold-keeping room, and its set temperature is higher than that of the refrigerating room; the boundary wall is provided between the vegetable room and the supercooling cold room; and the heater is provided at the boundary wall below the supercooling cold room.

According to the refrigerator of the present invention, by arranging a vegetable compartment adjacent to the supercooled cold storage compartment and having a set temperature higher than that of the refrigerating compartment, the supercooled cold storage compartment is not cooled due to heat transfer from the vegetable compartment. Therefore, it is not affected by the temperature as in the conventional technology in which the freezer compartment and the supercooled cooling compartment are adjacent to each other. As a result, the supercooled cooling chamber is not excessively cooled, the current rate and size of the heater used for the supercooled storage can be suppressed, and the supercooled storage can be efficiently performed.

1.1A ~ 1C‧‧‧Refrigerator

2‧‧‧ freezer

2c, 3c, 4c‧‧‧ Doors

3‧‧‧ Vegetable Room

4‧‧‧ freezer

5a‧‧‧cooling room

5a1‧‧‧ Cold Room

5a2‧‧‧Subcooled cold room

5b‧‧‧The first storage container

5b1, 5c1‧‧‧ front wall

5b2, 5c2‧‧‧ sidewall

5b3, 5c3 ‧‧‧ rear wall

5c‧‧‧Second storage container

5d, 5e‧‧‧space

6‧‧‧ divider

7‧‧‧junction wall

8‧‧‧ cooler

9‧‧‧ send fan

10, 10a, 10b‧‧‧The first wind road

11a, 11b‧‧‧Airlock

12‧‧‧Second Wind Road

13‧‧‧ cover

14‧‧‧Cooling chamber suction port

15‧‧‧ heater

16‧‧‧ rib

17‧‧‧Inner wall panel

17a, 17b, 17c

18‧‧‧ roof

19‧‧‧ water tank

20‧‧‧Thermistor

21‧‧‧shelf

24‧‧‧Refrigerator suction port

30‧‧‧compressor

50‧‧‧shell

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

Fig. 2 is a sectional view taken along the line A-A in Fig. 1 of the refrigerator according to the first embodiment of the present invention.

Fig. 3 is a sectional view taken along the line B-B in Fig. 1 of the refrigerator according to the first embodiment of the present invention.

Fig. 4 is an enlarged view of a portion E in Fig. 3 of the refrigerator according to the first embodiment of the present invention.

[Fig. 5] Sectional view taken along the line C-C in Fig. 4. [Fig.

FIG. 6 is an enlarged view of a portion F in FIG. 2.

FIG. 7 is an enlarged view of a portion G in FIG. 1.

[Fig. 8] A sectional view taken along the line D-D in Fig. 7.

Hereinafter, a refrigerator 1 according to an embodiment of the present invention will be described in detail using drawings. Moreover, in the following figures, the size relationship of each constituent member may be different from the actual situation. In addition, in the following drawings, the same or equivalent elements are denoted by the same symbols, which is the same throughout the specification. In addition, the form of the constituent elements shown throughout the specification is merely an example, and is not limited to these descriptions.

Embodiment 1.

Fig. 1 is a front view of a refrigerator according to a first embodiment of the present invention. In addition, in FIG. 1, in order to explain the internal structure of the refrigerator compartment 2, the illustration of the door piece of the refrigerator compartment 2 is abbreviate | omitted. Fig. 2 is a sectional view taken along the line A-A in Fig. 1 of the refrigerator according to the first embodiment of the present invention. Fig. 3 is a sectional view taken along the line B-B in Fig. 1 of the refrigerator according to the first embodiment of the present invention. A schematic configuration of the refrigerator 1 will be described with reference to FIGS. 1 to 3. The X-axis shown in FIGS. 1 to 3 indicates the width direction of the refrigerator 1, the Y-axis indicates the depth direction of the refrigerator 1, and the Z-axis indicates the height direction of the refrigerator 1. In more detail, X1 side is the left side, X2 side is the right side, Y1 side is the front side, Y2 side is the rear side, Z1 side is the upper side, and the Z2 side is the lower side. The refrigerator 1 will be explained on the side. In addition, in principle, the positional relationship (for example, the up-and-down relationship) among the constituent members in the description is the case when the refrigerator 1 is set in the use state.

[Configuration of Refrigerator 1]

The refrigerator 1 has a substantially rectangular parallelepiped case 50 which is opened at the front (front) and has a plurality of storage compartments inside. The casing 50 is composed of an outer box made of steel, an inner box made of resin, and a heat insulating material that fills a space between the outer box and the inner box. The storage space formed inside the casing 50 is formed by a plurality of partition members, and is divided into a plurality of storage rooms for storing objects to be cooled such as food. As shown in FIG. 1, the refrigerator 1 is provided with a refrigerating compartment 2 disposed at the uppermost stage 2, a vegetable compartment 3 disposed below the refrigerating compartment 2, and a freezer compartment 4 disposed at the lowermost stage below the vegetable compartment 3. As a plurality of storage rooms. The type and number of storage compartments included in the refrigerator 1 are not limited to the structure in which the vegetable compartment is provided in the lower area of the refrigerator compartment. For example, the freezer compartment 4 may be divided into a plurality of cold rooms provided in a vertical direction, a horizontal direction, or the like.

As shown in FIG. 2, a compressor 30 that compresses and discharges refrigerant, a cooler 8 having an evaporator function, and a blower fan 9 that moves cold air generated by the cooler 8 are provided on the rear side of the refrigerator 1 as An example of a cooling device for cooling in each storage room. In addition, the refrigerator 1 has a first air path 10, which is an air path through which cold air flows, and is provided with a cooler 8, a blower fan 9, and the like. The compressor 30 has a refrigerant discharge side connected to a condenser (not shown) and a refrigerant suction side connected to the cooler 8. The cooler 8 has a function of an evaporator, and performs heat exchange between the refrigerant flowing through itself and the air of the first air path 10 to generate cold air. The blower fan 9 supplies cold air from the first air path 10 to the refrigerating compartment 2, the vegetable compartment 3, and the freezing compartment 4. A first air path 10 is provided in the inner wall panel 17 of the case 50 from the lower side to the upper side in the refrigerator 1 along the longitudinal direction. More specifically, the first air passage 10 is provided on the back side of the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4. The first air path 10 is divided into a first air path 10a that sends cold air to the second storage container 5c, and a first air path 10b that sends cold air to the refrigerating compartment 2 and the first storage container 5b. An airlock 11a is provided in the first air passage 10a, and an airlock 11b is provided in the first air passage 10b. The air locks 11a and 11b are devices that adjust the air volume of the cold air supplied to the second storage container 5c, the refrigerator compartment 2, and the first storage container 5b. In addition, the air lock 11a and the air lock 11b may be replaced with a double air lock. As shown in FIG. 1, a cold air outlet 17 a is formed on the inner wall panel 17 of the refrigerator compartment 2. The compressor 30 and the cooler 8 constitute a refrigeration cycle together with a condenser and an expansion device (not shown). The cold air generated in the cooler 8 by the operation of the refrigeration cycle is blown by the fan 9 and is supplied to each of the storage compartments such as the refrigerating compartment 2 and the freezing compartment 4 through the first air passage 10 on the back of the refrigerator 1. The cold air supplied to the refrigerator compartment 2 is returned to the cooler 8 through the second air path 12 shown in FIG. 3.

The refrigerator 1 includes a control device (not shown) for controlling various devices. The temperature of each chamber is detected by a thermistor (not shown) installed in each chamber, and the opening degree of the airlock 11a and the airlock 11b provided in the first air passage 10a and the first air passage 10b is controlled by the control device. , The output of the compressor 30, the output of the heater 15 and the amount of air supplied by the fan 9 to achieve a preset temperature.

(Refrigerator 2)

The refrigerating compartment 2 is a storage compartment which is set in a refrigerating temperature zone (for example, about 3 to 5 ° C) and stores objects to be cooled such as food. As shown in FIG. 2, the refrigerator compartment 2 is provided with a shelf 21 and the like for storing food and the like. An opening portion formed in the front face of the refrigerator compartment 2 is provided with a rotary type (for example, a two-sided opening type) door piece 2c that opens and closes the opening portion. Of course, the door piece 2c of the refrigerating compartment 2 may not be a door piece of a two-sided type, but a single-piece rotating door piece. An inner wall panel 17 is provided in the refrigerator compartment 2. The inner wall panel 17 is disposed at a position opposed to the door piece 2 c of the refrigerator compartment 2, and forms a rear wall in the refrigerator compartment 2. Further, as shown in FIGS. 1 and 2, a cooling chamber 5 a is provided below the inside of the refrigerating compartment 2 as one of the storage compartments by partitioning the inside of the refrigerating compartment 2 by a top plate 18. The details of the cooling chamber 5a will be described using FIG. 4.

Fig. 4 is an enlarged view of a portion E in Fig. 3 of the refrigerator according to the first embodiment of the present invention. In the cooling chamber 5a, a first storage container 5b capable of maintaining a temperature lower than that of the refrigerating compartment 2 is disposed in the upper space, and a second storage container 5c capable of being subcooled and stored is disposed in the lower space, and there is a space therebetween. A partition plate 6 is provided to separate the upper space from the lower space. In other words, the top plate 18 is provided above the second storage container 5c, and the first storage container 5b is provided between the top plate 18 and the second storage container 5c.

The first storage container 5b and the second storage container 5c are drawer-type containers that can be moved in the front-rear direction along a rail (not shown) provided inside the side wall of the cooling chamber 5a. Furthermore, the track may be located on the bottom wall of the cooling chamber 5a and the partition plate 6, or no track may be provided. As shown in FIG. 4, the first storage container 5b is a substantially box-shaped member having a front wall 5b1, a side wall 5b2, and a rear wall 5b3, and the upper surface is opened, and food can be taken out through the upper opening when pulled out. The second storage container 5c is also a substantially box-shaped member having a front wall 5c1, a side wall 5c2, and a rear wall 5c3, and the upper surface is opened, and the food can be taken out through the upper opening when pulled out. The material of the first storage container 5b and the second storage container 5c may be, for example, polystyrene similar to the storage container of a general refrigerator, but is not limited thereto. In addition, from FIG. 1 to FIG. 4, two storage containers such as the first storage container 5 b and the second storage container 5 c are arranged vertically. However, for example, they may be arranged in the left-right width direction or one storage container may be provided.

As shown in FIG. 4, the space in the first storage container 5 b provided in the refrigerating compartment 2 is set to be lower than the temperature of the refrigerating compartment 2 and set to be higher than the temperature of the second storage container 5 c. The cooling chamber 5a1 is also set at about 0 ° C. Therefore, the first storage container 5b contains foods, such as cheese, yogurt, etc., which are maintained under a temperature of about 0 ° C. The space in the second storage container 5c provided in the refrigerating compartment 2 is kept at a lower temperature (for example, a subcooling temperature below the freezing point (freezing temperature) of the object to be cooled) that is colder than the space in the first storage container 5b. Supercooled cold room 5a2. Therefore, the second storage container 5c stores foods, such as meat, fish or processed products thereof, which are preferably kept cold in a supercooled state. In addition, the temperature adjustment of the cold storage chamber 5a1 is performed by the air volume adjustment of the air lock 11b, and the temperature adjustment of the supercooled cold storage room 5a2 is performed by the air volume adjustment of the air lock 11a and the output adjustment of the heater 15.

In the opening portion formed in the front of the upper space of the cooling chamber 5a, a door piece is provided by a cover 13 fixed to the top plate 18 and pivotable. The first storage container 5b is pulled out and the lid 13 is rotated to open the door. A front wall 5c1 of the second storage container 5c provided with a handle is formed as a drawer-type door in an opening portion formed in the front of the lower space of the cooling chamber 5a. The configuration of the door sheet of the cooling chamber 5a is arbitrary. For example, the cover 13 is provided as the lower door sheet, and the front wall 5b1 of the first storage container 5b may be configured as the upper door sheet. On the other hand, as shown in FIG. 2, an air outlet 17b is formed in the inner wall panel 17 behind the first storage container 5b, and the upper space of the cooling chamber 5a is connected to the first air path 10b in communication. Similarly, an air outlet 17c is formed in the inner wall panel 17 at the rear of the second storage container 5c, and a lower space of the cooling chamber 5a is connected to the first air passage 10a.

As shown in FIG. 4, on the partition plate 6 provided between the first storage container 5b and the second storage container 5c, a cooling chamber is formed to allow the cool air of the first storage container 5b to pass to the side of the second storage container 5c. Suction port 14. The cooling chamber suction port 14 is formed between the rear wall 5b3 of the first storage container 5b and the inner wall panel 17 of the refrigerator compartment 2. The cooling chamber suction port 14 is a through hole that communicates the upper space and the lower space in the cooling chamber 5a.

(Vegetable Room 3)

In FIGS. 2 and 3, the vegetable compartment 3 is provided below the refrigerating compartment 2 and is adjacent to the second storage container 5 c in the refrigerating compartment 2 via the boundary wall 7. In other words, the vegetable compartment 3 is adjacent to the supercooled cooling compartment 5a2. The vegetable room 3 has a space for accommodating storage items, and is particularly suitable for refrigerating vegetables. The vegetable compartment 3 is a storage compartment having a set temperature higher than the refrigerating temperature zone (for example, about 3 to 7 ° C.) of the refrigerating compartment 2. The vegetable room 3 is provided with a drawer-type door piece 3c. The door piece 3c is opened and closed to open / close the vegetable compartment 3 and the outside of the refrigerator 1.

(Junction wall 7)

As shown in FIG. 2, the boundary wall 7 is provided between the vegetable compartment 3 and the second storage container 5 c. In the structure in which the vegetable compartment 3 is located below the boundary wall 7, the second storage container 5c is not cooled by heat transfer. Therefore, the boundary wall 7 may not include a heat insulating material. As shown in FIG. 4, the junction wall 7 is formed with a refrigerating compartment suction port 24 for taking in the cold air from the refrigerating compartment 2. The refrigerator compartment suction port 24 is formed between the rear wall 5c3 of the second storage container 5c and the inner wall panel 17. At least a part of the refrigerating compartment suction port 24 and the cooling compartment suction port 14 overlap in plan view. As shown in FIG. 3, the refrigerator compartment suction port 24 is connected to the second air path 12 in communication.

(Heater 15)

As shown in FIG. 4, a heater 15 is provided below the second storage container 5 c on the boundary wall 7 as a heating mechanism (heating device) that heats foods and the like in the second storage container 5 c to be heated by a cooling object. . The heater 15 is used for heating the object to be cooled, and is used for a temperature increasing program for subcooling storage. During supercooled storage, it is necessary to prevent the object to be cooled from being overcooled and frozen. Therefore, the heater 15 is used to heat the supercooled object to be cooled. By placing the heater 15 below the second storage container 5c, the object to be cooled in the second storage container 5c can be efficiently heated.

(Freezer 4)

As shown in FIG. 2, the freezer compartment 4 is provided on the lower side of the vegetable compartment 3, has a space for storing a storage object, and freezes the storage object. The freezing compartment 4 is a storage compartment set in a freezing temperature zone (for example, -18 ° C or lower) which is lower than 0 ° C. The freezer compartment 4 is provided with a drawer-type door piece 4c. By opening and closing the door piece 4c, opening / isolation between the freezer compartment 4 and the outside of the refrigerator 1 is performed.

[About maintaining the supercooled state]

Here, a temperature environment in which the food in the second storage container 5c is maintained in a supercooled state will be described. For water to become ice, there must be a place where ice crystals grow, which is a small molecular ice core. In the supercooled liquid, the collection of molecules is repeatedly performed discretely due to shaking, resulting in molecular collections (cluster) of various sizes. When the cluster is very small, the internal molecules are in the state of ice binding, but the molecules on the surface cannot bind and are unstable, and they will detach from the cluster.

As long as the cluster does not exceed a certain critical radius, it cannot exist stably and will not become ice crystals, so it will not start to freeze even if it reaches below the freezing point. This state is a supercooled state. As long as a cluster with a critical radius or more is generated, ice crystals will be generated using it as a nucleus, and the supercooled state will be released. The lower the temperature, the higher the possibility that the supercooled state will be released, or external disturbances such as physical shocks will increase the shaking in the liquid, resulting in more than half a critical cluster, and the supercooled state will be cancelled.

In the case of food, since food is a mixture of substances, ice crystals are often produced by using it as a nucleus. When the food is stored below the freezing point (for example, below 0 ° C), the supercooled state may be released due to impact or any other reason, and ice crystals may be generated in the food. In addition, if the food is left as it is after the supercooling state is released, the freezing of the food will continue, and the freezing will cause cell damage and reduce the quality of the food. Therefore, control the low temperature program that sets the set temperature in the library to a temperature lower than the freezing point of the food, and the temperature rise program that sets the temperature higher than the freezing point, adjust the temperature environment of the storage space, and do not give stimuli such as drastic temperature reduction By performing cooling, the food can be maintained in a supercooled state. Specifically, when the supercooled state is maintained, it is preferable that the "temperature range" of the second storage container 5c that is supercooled and stored is in a range of -3 to -1 [° C]. In addition, when maintaining the supercooled state, it is preferable to make the "temperature distribution" of the second storage container 5c uniform.

[About the flow of air-conditioning]

Next, the flow of cold air generated by the cooler 8 will be described using FIG. 2 and FIG. 3. The arrows in the figure indicate the flow of cold air. The cool air generated by the cooler 8 is divided into cool air directed toward the refrigerating compartment 2 and the freezing compartment 4 by the blower fan 9. The cold air toward the refrigerating compartment 2 passes through the first air passage 10, and is divided into the cold air directed to the refrigerating compartment 2 and the first storage container 5b and the second storage container 5c by the air locks 11a and 11b. Then, the cool air directed to the refrigerating compartment 2 is blown out to the refrigerating compartment 2 from the air outlet 17a shown in FIG. 1. The cold air blown from the air outlet 17a to the refrigerating compartment 2 passes through the shelf 21, and sinks down from the upper direction in front of the refrigerating compartment 2 to the space 5d near the cooling compartment 5a shown in FIG. 4.

The cold air directed to the first storage container 5b and the second storage container 5c is blown out from the air outlet 17b to the first storage container 5b, and is blown out from the air outlet 17c to the second storage container 5c. As shown in FIG. 4, a part of the cold air blown from the air outlet 17 b passes from the gap between the first storage container 5 b and the lid 13, or from the gap between the lid 13 and the top plate 18 to the side near the cooling chamber 5 a. The space 5d passes through. In addition, a part of the cold air blown out from the air outlet 17c passes through a gap between the second storage container 5c and the partition plate 6 to a space 5d near the cooling chamber 5a. The cold air that passes from the first storage container 5b and the second storage container 5c to the space 5d near the cooling chamber 5a merges with the cold air that faces the lower side of the refrigerating compartment 2 and passes through the lower side of the second storage container 5c. The space 5e flows out from the refrigerator compartment suction port 24 to the second air path 12 shown in FIG. 3.

In addition, as shown in FIG. 4, the cold air blown from the air outlet 17 b and the air outlet 17 c is rebounded toward the rear of the storage container by the cover 13 and the front wall 5c 1 of the second storage container 5 c, respectively. Therefore, the cold air rebounded to the rear of the container in the first storage container 5b, and the cooling chamber suction port 14 passing through the cooling hole formed as a through hole formed in the partition plate 6, and then rebounded to the rear of the container in the second storage container 5c. The cold air converges, and flows out from the refrigerating compartment suction port 24 to the second air path 12. As shown in Fig. 3, the cold air flowing through the second air path 12 passes through the rear of the vegetable compartment 3 and flows back to the cooler 8 again. It should be noted that the cold air may not flow to the vegetable compartment 3 at this time.

As described above, by arranging the vegetable compartment 3 adjacent to the supercooling and cooling compartment 5a2 and having a set temperature higher than that of the refrigerating compartment 2, the supercooling and cooling compartment 5a2 will not be cooled due to heat transfer from the vegetable compartment 3, and will not be subjected to, A temperature effect like the conventional technique in which the freezer compartment is adjacent to the supercooled cooling compartment. As a result, the supercooled cooling chamber 5a2 is not excessively cooled, and it is possible to reduce the heating capacity of the heater 15 for the supercooled storage of the object to be cooled in the supercooled cooling chamber 5a2. As a result, the electric conduction rate of the heater 15 can be reduced, and the size of the heater 15 can be reduced, so that supercooled storage can be performed efficiently.

In addition, most of the cold air of the first storage container 5 b passes through the cooling chamber suction port 14 and the refrigerating chamber suction port 24 opened at the rear of the partition plate 6 and flows out to the second air path 12. By providing the cooling chamber suction port 14, the amount of cold air passing through the space 5e between the second storage container 5c and the boundary wall 7 can be reduced. In addition, the cooling chamber suction port 14 and the refrigerating chamber suction port 24 overlap in a plan view, thereby making it easier for cold air to flow to the second air path 12 and reducing the amount of cold air passing through the space 5e. By reducing the amount of cold air passing through the space 5e, the heat of the heater 15 is not easily taken away by the cold air passing through the space 5e, and the heating-up capability of the heater 15 can be reduced. As a result, the electric conduction rate of the heater 15 can be reduced, and the size of the heater 15 can be reduced, so that supercooled storage can be performed efficiently.

In addition, in the configuration in which the vegetable compartment 3 is adjacent to the supercooled cold storage chamber 5a2, the supercooled cold storage chamber 5a2 is not cooled by heat transfer. Therefore, the boundary wall 7 does not need to include a heat insulating material to prevent heat transfer to the supercooled cooling compartment 5a2, and can reduce costs.

In addition, since the temperature of the boundary wall 7 does not fall below the temperature of the second storage container 5c, there is no need to worry about water freezing. In addition, the thermal insulation performance of the boundary wall 7 may not be considered, and since the boundary wall 7 does not have a heat insulating material, the thickness of the boundary wall 7 can be made thin locally. With these structural features, for example, as shown in FIG. 4, a water supply tank 19 for making ice can be disposed in the boundary wall 7. Thereby, the water supply tank used to be located beside the cooling chamber 5 a can be moved into the boundary wall 7, and the width (X axis) of the first storage container 5 b and the second storage container 5 c can be made the entire interior of the refrigerator 2. Wide (X axis). As a result, the storage amounts of the first storage container 5b and the second storage container 5c can be increased.

Moreover, compared with the case where it is not the full width in a store, the structure which made the width of the 1st storage container 5b and the 2nd storage container 5c into the full width in the refrigerator of the refrigerator compartment 2 can be relatively set The air outlet 17b and the air outlet 17c are provided in the center part of the 1st storage container 5b and the 2nd storage container 5c. Therefore, the cold air can be uniformly flowed into the first storage container 5b and the second storage container 5c. As a result, unevenness in the temperature distribution in the second storage container 5c can be suppressed, and thereby supercooled storage can be performed efficiently.

Embodiment 2.

Fig. 5 is a sectional view taken along the line C-C in Fig. 4. A refrigerator according to a second embodiment of the present invention will be described with reference to FIG. 5. Parts having the same configuration as those of the refrigerator of FIGS. 1 to 4 are marked with compatible symbols and descriptions thereof are omitted. In the refrigerator 1A according to the second embodiment of the present invention, a rib 16 is provided in the boundary wall 7. The rib 16 is a side wall that surrounds the periphery of the heater 15 and is formed to be higher than the height of the heater 15. In FIG. 5, the shape of the heater 15 is formed in a rectangular shape in a plan view, and therefore, the rib 16 is also provided in a rectangular shape in a plan view. However, as long as the rib portion 16 has a shape surrounding the heater 15, various shapes may be provided in accordance with the shape of the heater 15.

As described above, in the refrigerator 1A according to the second embodiment of the present invention, ribs 16 are provided in the boundary wall 7 to surround the periphery of the heater 15 and to be higher than the height of the heater 15. Therefore, even if the cold air flows around the heater 15, it can be blocked by the ribs 16 so that the heater 15 is not directly blown by the cold air. As a result, the heat loss of the heater 15 can be reduced, and the heat of the heater 15 can be prevented from being used outside a necessary place. In addition, since the heating is more upward than the cold air, the heat of the heater 15 is limited to the rib 16 of the boundary wall 7 by the installation of the ribs 16, so that the heat during the heat generation can be effectively used, and the heater can be reduced. The power supply rate of 15 can also reduce the size of the heater 15. Therefore, for example, the heater 15 does not need to be provided on the entire boundary wall 7, and the heater 15 may be provided only directly below the second storage container 5 c on the near side.

Embodiment 3.

FIG. 6 is an enlarged view of a portion F in FIG. 2. A refrigerator according to a third embodiment of the present invention will be described with reference to FIG. 6. Parts having the same configuration as those of the refrigerator of FIGS. 1 to 5 are denoted by compatible symbols and descriptions thereof are omitted. In the refrigerator 1B according to Embodiment 3 of the present invention, the upper edge of the air outlet 17c is in contact with the lower surface of the partition plate 6. Thereby, the cold air flowing into the cooling chamber 5a from the air outlet 17c flows along the partition plate 6 due to the Coanda effect, so that the cold air can be spread throughout the second storage container 5c, and uneven temperature distribution can be suppressed. As a result, it is possible to perform supercooled storage over a wide range in the second storage container 5c.

Embodiment 4.

FIG. 7 is an enlarged view of a portion G in FIG. 1. Fig. 8 is a sectional view taken along the line D-D in Fig. 7. A refrigerator according to a fourth embodiment of the present invention will be described with reference to Figs. 7 and 8. Parts having the same configuration as those of the refrigerator of FIGS. 1 to 6 are denoted by compatible symbols and descriptions thereof are omitted. The refrigerator 1C according to Embodiment 4 of the present invention further includes a thermistor 20 that detects the temperature of the second storage container 5c. The thermistor 20 is provided between the rear wall 5c3 and the inner wall panel 17 of the second storage container 5c. . The temperature adjustment in the second storage container 5c is performed by adjusting the output of the heater 15 and the air volume of the cold air of the air lock 11a. The control is based on the lower edge of the second storage container 5c, which is provided below the air outlet 17c. The detection temperature obtained by the thermistor 20 having the same height as the rear wall 5c3 is performed.

It is better to measure the temperature as close as possible to the food when it is stored under cooling. However, the temperature of foods does not fluctuate as drastically as room temperature, and changes gently with respect to changes in room temperature. Therefore, if the thermistor 20 is placed at a position where it is easily blown by cold air, the difference between the food temperature and the temperature measured by the thermistor 20 becomes large, which is not conducive to supercooled storage. Therefore, in order not to be blown by cold air, the thermistor 20 is not disposed between the air outlet 17c and the refrigerating compartment suction port 24, but is formed between the installation position of the thermistor 20 and the refrigerating compartment suction port 24. Arrangement of the air outlet 17c. Since the air outlet 17c is arranged between the thermistor 20 and the refrigerator inlet 24, cold air does not directly blow to the thermistor 20, the temperature can be appropriately measured, and supercooled storage is easily achieved.

It should be noted that the embodiments of the present invention are not limited to the above-mentioned first to fourth embodiments. For example, in the direction in which the cold air will blow to the thermistor 20, a wall may be provided at a part around the thermistor 20 to make it difficult for the cold air to blow. The heating device is not limited to the heater 15, and may be a heat exchanger, a Parr element, or the like.

Claims (10)

    A refrigerator includes: a refrigerating compartment set in a refrigerating temperature zone to store objects to be cooled; a supercooled refrigerating compartment provided in the refrigerating room to keep the objects to be cooled below a freezing temperature; and a vegetable compartment provided at the above The lower part of the refrigerating room is adjacent to the above-mentioned supercooling and cooling room, and its set temperature is higher than the above-mentioned refrigerating room; the boundary wall is provided between the above-mentioned vegetable room and the above-mentioned cooling and cooling room; and the heater is placed in the above-mentioned cooling and cooling room The above junction wall below.         According to the refrigerator described in item 1 of the scope of patent application, the refrigerating compartment includes: a top plate provided above the supercooling and cooling compartment; a cooling compartment provided between the top plate and the subcooling and cooling compartment, and the set temperature is lower than the above The refrigerating compartment is set at a higher temperature than the supercooling and cooling compartment; a partition plate is provided between the supercooling and cooling compartment; and the partition plate is formed to allow the cold air from the coldholding chamber to pass to the subcooling. Cooling chamber suction port on the side of the cooling compartment.         According to the refrigerator described in item 2 of the scope of patent application, the junction wall is formed with a refrigerating compartment suction port for taking in the cold air of the refrigerating compartment, and the cooling compartment suction port and the refrigerating compartment suction port overlap at least in part when viewed in plan.         According to the refrigerator described in item 3 of the scope of patent application, the cold storage compartment is composed of a box-shaped first storage container having a front wall, a side wall, and a rear wall and an upper surface is opened, and the supercooled cold storage compartment includes a front wall, The side wall and the rear wall and a box-shaped second storage container which is opened on the upper surface; the cooling chamber suction port is formed on the rear wall of the first storage container, and the rear wall of the first storage container is disposed opposite to the door piece of the refrigerator compartment. Between the inner wall panels of the refrigerating compartment; the refrigerating chamber suction inlet is formed between the rear wall of the second storage container and the inner wall panels.         According to the refrigerator described in any one of claims 1 to 4, the junction wall further contains a water supply tank for making ice.         According to the refrigerator described in any one of claims 1 to 4, the side wall is provided on the boundary wall to surround the circumference of the heater, and the height is higher than the height of the heater.         The refrigerator according to any one of claims 2 to 4, wherein the inner wall panel disposed at a position opposite to the door piece of the refrigerating compartment has a cold air path provided in a vertical direction; The inner wall panel is formed with a cold air outlet from the air path to the supercooled cooling chamber; the lower surface of the partition plate is in contact with the upper edge of the air outlet.         The refrigerator described in item 7 of the scope of the patent application, further includes: a thermistor for detecting the temperature of the supercooled cold storage compartment; and the thermistor provided on the rear wall of the second storage container and the inner wall panel. It is provided at a height lower than the lower edge of the air outlet and equal to or higher than the rear wall of the second storage container.         According to the refrigerator described in claim 8 of the scope of patent application, the air outlet is formed between the installation position of the thermistor and the suction port of the refrigerator compartment.         According to the refrigerator described in any one of claims 1 to 4, the heater is a device for heating to prevent the object to be cooled in the supercooled cooling chamber from freezing.