JPH10111066A - Freezing refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unify a temperature in a refrigerating chamber bucket and contrive the reduction of ineffective volume in a freezing chamber. SOLUTION: In a cooling cycle for refrigerating, a compressor 8, a condenser 21, a first choking device 23 and a refrigerating cooler 18 are connected sequentially. In a cooling cycle for freezing, a second choking device 24 and freezing coolers 17 are connected to the first choking device 23 in parallel to the refrigerating cooler 18 while the compressor 8, the condenser 21, the first choking device 23, the second choking device 24 and the freezing coolers 17 are connected sequentially. In this case, a switching means, switching both of the cycles, is provided and the freezing coolers 17 are provided on the ceiling surface of a bucket and when the drawer type door for the freezing chamber is closed, the freezing coolers 17 serve as the lid of a bucket whereby the bucket is sealed tightly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating refrigerator having a drawer-type freezing compartment, which relates to equalizing the temperature in the freezing compartment and reducing the ineffective volume in the refrigerator.

[0002]

2. Description of the Related Art A conventional refrigerator is disclosed in Japanese Unexamined Patent Publication No. 7-27002.
No. 8 has a configuration as known. Less than,
The configuration of a conventional refrigerator will be described with reference to FIG.

The refrigerator body 1 has a box shape with an open front surface, and a freezer compartment 2 is formed at the bottom of the box body.
The refrigerator compartment 3 is formed on the upper side. The freezer compartment 2 and the refrigeration compartment 3 serve as a partition wall 1 inside the refrigerator body 1.
5 and is formed by partitioning
And each front opening of the refrigerator compartment 3 is covered by doors 12 and 13 pivotally supported by the refrigerator main body 1. Note that a vegetable compartment 9 is formed in the lower part of the refrigerator compartment 3.

[0004] A partition member 4 made of a heat insulating material is provided on the back side of the freezing compartment 2, and a cooler compartment 5 is defined on the back side of the freezing compartment 2. A cooler 6 of a refrigerating cycle is provided in the cooler room 5, and the surrounding air is cooled by a refrigerant flowing through the cooler 6, thereby generating cool air.

[0005] Further, a fan device 7 including a fan motor and a fan is disposed in the cooler room 5, and the cool air generated by the cooler 6 is blown by the fan device 7.

The cool air blown by the fan device 7 is supplied into the freezing compartment 2 through a discharge port (not shown). Further, a suction port (not shown) is formed below the partition member 4, and the cool air supplied into the freezing compartment 2 is returned into the cooler chamber 5 through the suction port.

A duct 10 extending upward is provided at the back of the refrigerator compartment 3, and a part of the cool air generated by the cooler 6 is blown into the refrigerator compartment 3 from the duct 10 through a discharge port (not shown). Is done. A return duct (not shown) is provided on a side wall in the refrigerator body 1. This return duct has an upper end opening in the lower part of the refrigerator compartment 3 and a lower end opening in the side part of the cooler room 5, and the cool air supplied into the refrigerator room 3 passes through the return duct to the cooler room 5.
Is returned to the side.

[0008]

However, in the above-mentioned conventional configuration, the inside of the bucket 11 is cooled by the cool air blown by the fan device 7, so that even when a large amount of food is stored, the cool air is evenly distributed in the bucket 11. Difficult to shed,
There is a problem that temperature unevenness in the bucket 11 is large. In addition, it is necessary to form an air passage for convection of the cool air around the cooler room 5 for generating cool air and the bucket 11, and there is a problem that the freezing chamber 2 has a large ineffective volume.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has an object to provide a refrigerator-freezer capable of reducing temperature unevenness in a bucket, reducing an ineffective volume in a freezer compartment, and increasing a food storage amount. It is.

[0010]

SUMMARY OF THE INVENTION In order to solve this problem, a refrigerator according to the present invention comprises a refrigerator having at least one refrigerator and a refrigerator having at least one refrigerator. A refrigerator, a compressor, a condenser, a first expansion device, and a refrigeration cycle for refrigeration in which the refrigeration cooler is sequentially connected; and a second expansion device in parallel with the refrigeration cooler. The refrigeration cooler is connected to the first
A refrigerating cycle connected to the expansion device, and switching means for switching between the refrigerating cycle and the refrigerating cycle. The freezing compartment has a drawer-type door and a bucket supported by the drawer-type door. The refrigerator is configured such that the refrigerator is a lid of the bucket when the drawer-type door of the refrigerator is closed on the top surface of the bucket. .

As a result, the inside of the bucket is uniformly cooled from above, so that the temperature unevenness in the bucket can be reduced. In addition, the inside of the bucket becomes a closed space with the refrigerating cooler serving as a lid, so that the inflow of air from outside the bucket is reduced, and the range of temperature fluctuation can be reduced.
Further, since the freezing cooler is disposed in the ineffective volume portion above the bucket, it is possible to reduce the ineffective volume portion in the freezer compartment and increase the food storage amount.

[0012] Further, the refrigerating cooler is arranged at an upper part and a lower part of a bucket.

Thus, the inside of the bucket is also indirectly cooled from around the bucket, so that the temperature unevenness can be further reduced.

[0014] Further, a refrigerator for freezing is disposed on the upper and lower portions of the bucket, and the lower cooler is configured to be in contact with the bottom surface of the bucket when the drawer type door of the freezer compartment is closed. is there.

[0015] Thereby, the cooling effect from the lower cooler is improved, and the temperature unevenness in the bucket can be further reduced. Further, the cooling rate in the bucket can be improved.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a freezing room provided with at least one refrigeration cooler and a refrigeration room provided with at least one refrigeration cooler are formed independently. Equipped with a refrigerator, a compressor, a condenser,
A first refrigerating cycle in which the first expansion device and the refrigerating cooler are sequentially connected; and a second expansion device and the refrigerating cooler connected to the first expansion device in parallel with the refrigerating cooler. Refrigeration cycle, and switching means for switching between the refrigeration cycle and the refrigeration cycle. The freezing compartment is composed of a drawer-type door and a bucket, and the freezer cooler is Surface, wherein the freezer cooler is disposed so as to be a lid of the bucket when the drawer-type door of the freezer is closed. Serves as a lid for the bucket opening, has a closed space inside the bucket, and has the effect of uniformly cooling the inside of the bucket from above.

According to a second aspect of the present invention, there is provided the refrigerator according to the first aspect, wherein the refrigerating cooler is disposed at an upper portion and a lower portion of the bucket. And has the effect of uniformly cooling the inside of the bucket from below.

According to a third aspect of the present invention, there is provided a refrigeration cooler disposed at an upper portion and a lower portion of a bucket, and when the drawer-type door of the freezer compartment is closed, the lower cooler is provided with the bucket. The refrigerator according to claim 1 or 2, wherein the freezer cools the bucket evenly by natural convection of cool air from the upper part and direct cooling from the lower part. Have.

An embodiment of the present invention will be described below with reference to FIGS. However, the same components as those of the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

(Embodiment 1) FIG. 1 is a schematic sectional view of a refrigerator-freezer according to an embodiment of the present invention, and FIG. 2 is a diagram of a cooling system according to the embodiment.

Reference numeral 1 denotes a refrigerator-freezer main body, in which a freezer compartment 2 is provided at a lower portion, and a refrigerator compartment 3 is provided at an upper portion. In the freezer compartment 2, a bucket 11 is supported by a freezer compartment door 13, and stored items such as food are stored in the bucket 11 and used.

The inside of the refrigerator compartment 3 is divided into several storage sections by a partition plate, and foods and the like are stored and used. In the lower part of the refrigerator compartment 3, a vegetable compartment 9 in which food such as vegetables is mainly stored is used. In the freezer compartment 2, an upper part of the bucket 11 is provided with a refrigerant pipe 17 for heat exchange. A plate-type freezing cooler 16 is provided. The freezing cooler 16 is supported at the lower part of the partition wall 15, and when the freezer compartment door 13 is closed, the bucket 1 is closed.
1 is in contact with the upper opening, and seals the inside of the bucket 11.

A refrigerator 20 for cooling is formed in the lower part of the back of the refrigerator 3. In the refrigerator cooler room 20, a refrigerator cooler 18 for generating cool air and a refrigerator cool fan 19 for blowing cool air are arranged.

On the back of the refrigeration room 3, a refrigeration cooler room 20 is provided.
A duct 10 is provided for sending cool air sent from the refrigerator into the refrigerator compartment.

The refrigeration cycle includes a compressor 8, a condenser 21,
The first expansion device 23 and the refrigeration cooler 18 are sequentially connected to form a refrigeration refrigeration cycle, and the second expansion device 24 and the refrigeration cooler 17 are arranged in parallel with the refrigeration cooler 18.
Is connected to the first expansion device 23, and the compressor 8, the condenser 2
1, a first expansion device 23, a second expansion device 24, and a refrigeration cooler 17 are sequentially connected to form a refrigeration cycle. Reference numeral 22 denotes a switching unit that switches between a refrigeration cycle and a refrigeration cycle.

In the above configuration, when cooling the freezing compartment 2, the switching means 22 is closed to switch to the freezing refrigeration cycle, and the refrigerant is sent to the freezing cooler 16. Cooling air is generated by cooling the surrounding air by the refrigerant flowing in the freezing cooler 16. Refrigerator 1
The cold air generated by the bucket 6 is supplied to the bucket 1 by natural convection.
The inside of 1 is cooled to a predetermined temperature from above.

When the refrigerator 3 is cooled, the switching means 22 is opened to switch to the refrigerating cycle, and the refrigerant is sent to the refrigerator 18. The surrounding air is cooled by the refrigerant flowing in the refrigeration cooler 18 to generate cool air.
Air is blown into the refrigerating room 3 from each of the discharge ports through 0. The cool air supplied into the freezer compartment 3 is returned to the inside of the cooler compartment 20 through a suction port below the cooler compartment 20 for refrigeration. The inside of the refrigerator compartment 3 is cooled to a predetermined temperature by the circulation of the cool air as described above.

As described above, since the inside of the bucket 11 is uniformly cooled from above by the freezing cooler 16, it is possible to reduce the temperature unevenness in the bucket 11.

The inside of the bucket 11 is provided with a refrigeration cooler 1.
Since the closed space becomes the lid 6, the inflow of air from the outside of the bucket is reduced, and the range of temperature fluctuation can be reduced.

Further, the freezing cooler 16 is provided with a partition wall 15.
It is arranged at the lower part, and the ineffective volume portion on the back surface of the freezing compartment 2 is eliminated, and the depth dimension of the bucket 11 can be increased, so that the storage amount of food can be increased.

Although the freezing cooler 16 is a plate cooler, the present invention is not limited to this, and another cooler such as a roll bond cooler may be used.

Although the two refrigerating coolers 16 are connected in series in FIG. 2, they may be connected in parallel.

(Embodiment 2) FIG. 3 is a schematic sectional view of a refrigerator-freezer according to another embodiment of the present invention, and FIG. 4 is a diagram of a cooling system according to the embodiment.

At the lower part of the bucket in the freezing compartment 2 is provided a refrigerating cooler 25 in which a refrigerant pipe 17 is arranged in a heat exchange manner. The refrigerating cooler 25 is supported on the central partition wall 15 in the freezer compartment 2 or on the top of the bottom heat insulating wall of the refrigerator main body 1.

In the above arrangement, when cooling the freezing compartment 2, the switching means 22 is closed to switch to the freezing refrigeration cycle, and the refrigerant is sent to the freezing coolers 16 and 25.
The surrounding air is cooled by the refrigerant flowing in the freezing coolers 16 and 25 to generate cool air. The cool air generated by the freezing cooler 16 cools the inside of the bucket 11 from above by natural convection. Also,
The cool air generated by the freezing cooler 25 is supplied to the bucket 1
Cool the space around 1.

As described above, the inside of the bucket 11 is uniformly cooled from above by the freezing cooler 16,
Since the freezing cooler 25 also indirectly cools the space around the bucket 11, it is possible to further reduce the temperature unevenness.

The refrigeration cooler 16 and the refrigeration cooler 2
Reference numeral 5 may be an integral one like a U-shape.

(Embodiment 3) FIG. 5 is a schematic sectional view of a refrigerator according to another embodiment of the present invention.

At the lower part of the bucket in the freezer compartment 2 is provided a refrigerating cooler 25 in which the refrigerant pipes 17 are arranged for heat exchange. The refrigerating cooler 25 is supported on the central partition wall 15 in the freezer compartment 2 or on the top of the bottom heat insulating wall of the refrigerator main body 1 and contacts the bottom of the bucket 11 when the freezer compartment door 13 is closed. It is.

In the above configuration, when cooling the freezing compartment 2, the switching means 22 is closed to switch to the freezing refrigeration cycle, and the refrigerant is sent to the freezing coolers 16 and 25.
Cooling air is generated by cooling the surrounding air by the refrigerant flowing through the freezing cooler 16. The cool air generated by the freezing cooler 16 cools the inside of the bucket 11 from above by natural convection. Further, the bottom of the bucket 11 in contact with the freezing cooler 25 is cooled by the refrigerant flowing through the freezing cooler 25.

As described above, the inside of the bucket 11 is uniformly cooled from above by the freezing cooler 16,
Since cooling is directly performed from the bottom of the bucket 11 by the refrigerating cooler 25, it is possible to further reduce temperature unevenness.

[0042]

As described above, according to the present invention, it is possible to provide a refrigerator having a small temperature unevenness in the bucket of the freezer compartment.

Further, it is possible to provide a refrigerator-freezer having a small temperature fluctuation width in the bucket of the freezer compartment. Further, by disposing the coolers in the ineffective volume portions above and below the bucket, the ineffective volume portion on the back of the freezing room is eliminated, the depth dimension of the bucket can be increased, and a refrigerator having a large amount of stored frozen food can be provided.

Further, it is possible to provide a freezer-refrigerator with a high cooling rate in the freezer compartment.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a first embodiment of a refrigerator according to the present invention.

FIG. 2 is a refrigeration system diagram of the first embodiment of the refrigerator according to the present invention.

FIG. 3 is a schematic sectional view of a second embodiment of the refrigerator according to the present invention;

FIG. 4 is a refrigeration system diagram of a second embodiment of the refrigerator according to the present invention.

FIG. 5 is a schematic sectional view of a third embodiment of the refrigerator according to the present invention.

FIG. 6 is a schematic sectional view of a conventional refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Freezer room 3 Refrigerator room 8 Compressor 9 Vegetable room 10 Duct 11 Bucket 12 Refrigerator room door 13 Freezer room door 15 Partition wall 16 Refrigerator 17 Refrigerant piping 18 Refrigerator cooler 19 Refrigerator cooling fan 20 Refrigerator Cooler room

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Yoshinori Kawata 4-5-2-5 Takaidahondori, Higashiosaka-shi, Osaka Matsushita Refrigeration Machine Co., Ltd.

Claims (3)

[Claims] 1. A refrigerator comprising: a freezer compartment provided with at least one refrigerating cooler; and a refrigerator body independently provided with a refrigerating compartment provided with at least one refrigerating cooler;
A refrigerating refrigeration cycle in which a condenser, a first expansion device, and the refrigerating cooler are sequentially connected; a second expansion device and the first refrigerating cooler are connected in parallel with the refrigerating cooler; A refrigerating cycle connected to the device, and a switching unit for switching between the refrigerating cycle and the refrigerating cycle, the freezing compartment has a drawer-type door and a bucket supported by the drawer-type door, The refrigerating cooler is disposed on a top surface of the bucket so that the refrigerating cooler serves as a lid of the bucket when the drawer-type door of the freezing compartment is closed. And refrigerator-freezer. 2. The refrigerator according to claim 1, wherein the refrigerator is provided at an upper portion and a lower portion of the bucket. 3. The refrigerator according to claim 1, wherein the refrigerator is disposed at an upper portion and a lower portion of the bucket, and the lower refrigerator is in contact with a bottom surface of the bucket when a drawer-type door of the refrigerator is closed. The refrigerator according to claim 1 or 2, wherein