JPH09303934A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a cooling speed of food and restrict an increasing of temperature of food when a power failure occurs by a method wherein there is provided a specified low temperature chamber defined and formed by a door U-shaped shelf in a refrigeration chamber and coolant is filled in a U-shaped shelf in the specified low temperature chamber. SOLUTION: A door 29 is a door of a specified low temperature chamber 30, a shelf 31 is formed into a U-shape in such a way that it may cover a bottom part and both side surfaces of the specified low temperature chamber 30, a cool storage medium 32 is filled in it and it can be slid in a forward direction. In such a configuration as above, cold air flowed through the first discharging port and the second discharging port and the medium 32 are filled in the specified low temperature chamber 30, thereby the entire area is uniformly cooled without any irregular distribution of temperature by the shelf 31 comprising the bottom part and both side surfaces having a cool storage effect in advance. In this way, even if a large amount of foods are stored in it, the large amount of foods are cooled by cold air discharged to a specified low temperature chamber 30, both side surfaces of the U-shaped shelf 31 filled with cooled medium 32 in advance as well as its bottom surface, so that it is possible to restrict an irregular distribution of temperature at the food.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cooling a specific low temperature room provided in a refrigerator.

[0002]

2. Description of the Related Art Conventionally, a method for cooling a specific low temperature chamber provided in a refrigerator is, for example, as disclosed in Japanese Utility Model Publication No. 61-74085, which will be described below with reference to FIGS.

FIG. 4 shows a structure of a conventional cooling method for a specific low-temperature room provided in a refrigerator room.
It is composed of an outer box 2, an inner box 3, and a foam heat insulating material 4 filled between the two boxes, and is partitioned by a partition wall 5 into a freezer compartment 6 at an upper portion and a refrigerator compartment 7 at a lower portion.

A cooler 8 of a refrigerating cycle and a blower 9 for forced ventilation are provided behind the freezing chamber 6. The partition wall 5 is a top plate, and a semi-hermetic specific low-temperature chamber 13 is provided by a door 11 and a shelf 12 which communicate with the temperature control device 10.

The temperature control device 10 includes a damper thermostat 14 for controlling the amount of cold air to the refrigerating compartment 7 at the center thereof.
Adjacent to this side, a damper thermostat 15 that independently controls the cold air to the specific low temperature chamber 13 is housed.

Further, the discharge air passage 6 to the refrigerating chamber 7 is directed downward.
And a discharge outlet 17, a discharge air passage 18 extending from the damper thermostat 15 in a generally L-shape and communicating with each other, and a first discharge outlet 19 that is open forward in the vicinity of the central portion of the rear end of the specific low temperature chamber 13. The second ejection ports 19a are integrally formed in parallel.

Reference numeral 20 denotes a main discharge air passage, one end of which is opened to the discharge side of the blower 9 and the other end is branched by a branch port 21, one of which is the damper thermostat 1 for the refrigerator compartment.
5 and open.

Reference numerals 22, 23 and 24 denote a freezing room, a refrigerating room, and
It is connected to the freezer compartment suction air passage 26, the refrigerating compartment suction air passage 27, and the particular low temperature compartment suction air passage 28, which are formed by the heat insulating material 25 in the partition wall 5 at the suction port of the particular low temperature chamber, and are connected to the cooler 8. It communicates with the lower end.

In such a structure, the cool air generated in the cooler 8 cools the freezer compartment 6 by the blower 9, and the suction port 2
2. It is returned to the cooler 8 through the freezer suction air passage 26.

At the same time, the discharge air passage 1 is passed through the main discharge air passage 20 and, on the other hand, via the damper thermostat 14.
After being supplied to the refrigerating chamber 7 through the discharge port 17 in an appropriate amount, it is returned to the cooler 8 through the suction port 23 and the refrigerating chamber discharge air passage 27.

The branch port 2 provided in the main discharge air passage 20
1 and circulates through a substantially L-shaped discharge air path 18 via a damper thermostat 15, and a first discharge port 19, a second discharge port
After being supplied to the specific low-temperature chamber 13 in a controlled amount from the discharge port 19a, the specific low-temperature chamber suction air path 28 is supplied from the suction port 24.
Through to the cooler 8.

[0012]

However, in the above-mentioned structure, the cold air sent to the specific low temperature chamber is the first one.
Since there is only the air volume of the ejection port and the second ejection port, temperature unevenness occurs when a large amount of food is stored.

It is an object of the present invention to prevent temperature unevenness in a specific low temperature chamber even if a large amount of food is stored, improve the cooling speed of food, and suppress the temperature rise of food during a power failure.

[0014]

In order to solve this problem, the present invention forms a lower part of a specific low temperature chamber, a left side surface and a right side surface by an integral U-shaped shelf, and stores the cold storage agent in the shelf. It has a filled structure.

Further, the lower part of the specific low temperature chamber, both side surfaces and the top surface are formed by an integral substantially square-shaped shelf, and the shelf is filled with the cold storage agent.

With the above structure, even if a large amount of food is stored, it is possible to prevent temperature unevenness in the specific low temperature chamber, improve the cooling speed of food, and suppress the temperature rise of food during a power failure.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a blower for forcibly blowing cold air made by a cooler into a freezer compartment and a refrigerating compartment, and an air volume to the refrigerating compartment according to the temperature of the refrigerating compartment. And a damper thermostat for adjusting the temperature, and a specific low temperature room defined by a door and a U-shaped shelf in the refrigerating room, the U-shaped shelf of the specific low temperature room is filled with a regenerator. This is a refrigerator that controls the temperature unevenness of each part even if a large amount of food is stored by cooling not only the cold air from the outlet of the specific low temperature room but also the side and bottom of the shelf, thus cooling the food. It has the effect of improving the speed and suppressing the temperature rise of foods due to the cold storage effect of the shelves during a power failure.

According to a second aspect of the present invention, there is provided a refrigerator according to the second aspect, in which the shelf shape of the specific low temperature chamber is formed in a substantially square shape, and a shelf filled with the cold storage agent is provided. Even if a large amount of food is stored not only by the cold air of the shelf but also by cooling from both sides of the shelf and from the top and bottom, the temperature unevenness of each part is suppressed by the cool storage effect from the top, and the cooling speed of food can be improved. Due to the cold storage effect of the shelves, it has the effect of suppressing the temperature rise of the food during a power failure.

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS. In addition, the same reference numerals are given to the same parts as those in the related art, and the description is omitted.

In the figure, 29 is a door of the specific low temperature chamber 30, and a shelf of 31 is formed in a U shape so as to cover the bottom portion and both side surfaces of the specific low temperature chamber 30, and is filled with a cold storage agent 32.
It is formed so that it can slide forward.

In this structure, the specific low temperature chamber 30 is filled with the cold air flowing from the first discharge port 19 and the second discharge port 19a and the cold storage agent 32 by the shelf 31 having a bottom portion and both side surfaces having a cool storage effect in advance. It is cooled evenly throughout the temperature.

(Embodiment 2) FIG. 3 is a front view of a specific low temperature chamber according to the second embodiment of the present invention. In FIG. 3, reference numeral 33 covers both side surfaces, the top surface and the lower portion of the specific low temperature chamber 34. It is a shelf that is formed in a substantially square shape and is filled with the cool storage agent 32. Even if a large amount of food is stored, the upper part of the food is cooled by the cool storage effect from the top surface, suppressing temperature unevenness in each part. It is possible to perform the same operation as in claim 1.

[0023]

As described above, according to the present invention, the lower part of the specific low temperature chamber, the left side surface and the right side surface are formed by an integral U-shaped shelf, and the cold storage agent is filled in the shelf, whereby a large amount of Even if food is stored, the large amount of stored food is cooled from both sides and the bottom of the U-shaped shelf filled with cold air that is discharged to the specified low temperature chamber and pre-cooled regenerator, thus suppressing uneven temperature of food. Therefore, the cooling speed can be improved, and the temperature increase of the food can be suppressed by the cold storage effect of the shelves at the time of power failure.

Also, the same effect as above can be obtained by forming the lower portion, both side surfaces and the top surface of the specific low temperature chamber into a substantially U-shaped shelf and filling the shelf with the cold storage agent.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a front view showing a main part of the refrigerator in one embodiment of the present invention.

FIG. 3 is a front view showing a main part of a specific low temperature chamber in an embodiment of claim 2 of the present invention.

FIG. 4 is a sectional view of a conventional main part.

5 is a cross-sectional view of a conventional refrigerator using the main structure of FIG.

FIG. 6 is another cross-sectional view of the conventional temperature control device portion of FIG.

[Explanation of symbols]

 6 Freezing Room 7 Refrigerating Room 8 Cooler 9 Blower 15 Damper Thermostat 29 Door 30 Specific Low Temperature Room 31 U-Shaped Shelf 32 Regenerator 33 Cabinet-Type Shelf 34 Specific Low Temperature Room

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Yamamoto 4-2-5 Takaidahondori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerating Machinery Co., Ltd.

Claims (2)

[Claims] 1. A blower for forcedly blowing cold air produced by a cooler into a freezer compartment and a refrigerating compartment, a damper thermostat for adjusting an air volume to the refrigerating compartment according to a temperature of the refrigerating compartment, and a U-shaped door in the refrigerating compartment. A refrigerator comprising a specific low temperature chamber defined by a mold shelf, wherein the U-shaped shelf of the specific low temperature chamber is filled with a cold storage agent. 2. The refrigerator according to claim 1, wherein the shelf shape of the specific low temperature chamber is formed in a substantially square shape, and a shelf filled with the cold storage agent is provided.