JPS63217174A - Cold-insulating device for refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cold storage device for a refrigerator, and particularly to a cold storage device for a refrigerator that is suitable for efficiently transmitting cold heat to food.

[Conventional technology]

Conventional cold storage devices for refrigerators use a flat container with a cold storage agent sealed inside the refrigerator's freezer compartment, which replaces the cold storage agent and uses low-temperature airflow inside the freezer to store food placed on the inside of the container. Some items freeze quickly.

In addition, for example, as a device related to this cold storage device,
9-120898% publication.

[Problem that the invention seeks to solve]

In the conventional technology described above, since the cold storage device is a flat plate, depending on the shape of the food, cold heat from the cold storage device may not be efficiently transferred to the food.

An object of the present invention is to provide a cold storage device for a refrigerator that improves the efficiency of transferring cold heat to food.

[Means for solving problems]

The above object is achieved by forming a bowl-shaped container, which is made up of a container provided in a freezing chamber and a cold storage agent filled in the container.

(Function) Since food can be stored in the bowl-shaped cold storage device, the range of cold heat transfer from the cold storage device to the food is increased.

Thereby, food is efficiently cooled.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

FIG. 1 is a cross-sectional view of a refrigerator cold storage device equipped with the present invention, FIG. 2 is a cross-sectional view of essential parts of a refrigerator incorporating the refrigerator cold storage device of the present invention, and FIG. 3 is a cross-sectional view taken along line AA in FIG. It is a diagram. In the figure, 1 is a cold storage device.

1a is the upper container of the cold storage device 1, and 1a' is the central flat part thereof. The entire upper container 1a' is press-molded into a bowl shape. 1b is a lower container of the cold storage device 1, and 1c is a peripheral flange of the joint between the upper container 1a and the lower container 1b. Reference numeral 1d denotes a cold storage agent to be filled in the interior surrounded by the upper container 1a and the lower container 1b, and it is necessary to select a material that will not freeze in the freezer compartment. 1e is the leg of the cold storage device 1;
2 is a plate for storing food. 2a is the foot of the plate 2, 3 is the food, and 4 is water injected to increase the amount of heat transfer between the central flat part 1a' of the cold storage device 1 and the plate 2.

In Figures 2 and 3, 5 is the box body of the refrigerator, 6 is the freezer compartment door, 7 is the refrigerator compartment door, 8 is the partition wall, 9 is the evaporator,
10 is a blower, 11 is a partition plate, and according to this embodiment, when the above-mentioned cold storage device 1 is used to quickly freeze food, the flange 1c of the cold storage device 1 is installed on the shelf support 13a of the freezer compartment 13. , the cold storage material filled in the freezer compartment 13 is frozen and lowered in temperature. Food is placed on top of the cooled cold storage device 1 and quickly frozen. Furthermore, the frozen cold storage device 1 is taken out from the freezer compartment 13, and the plate 2 containing the food to be kept cold is placed inside the cold storage device 1.
Place it on top of the upper container 1 a'. However, as it is, the legs 2a provided at the bottom of the dish 2 and the central flat part 1 of the cold storage device 1
A' is a point contact or a line contact, resulting in a large contact thermal resistance. Furthermore, the upper container 1 of the cold storage device 1
Since there is a high-temperature plate 2 at the top and a low-temperature cold storage device 1 at the bottom, the cold air accumulates below the cold storage device 1 and the plate 2 cannot be cooled by heat transfer. . Therefore, when the food is placed in the plate 2, the temperature of the food increases due to the outside air temperature due to insufficient heat transfer from the cold storage device 1. However, according to the present invention, there is a gap between the cold storage device 1 and the plate 2. By pouring water 4, the dish 2 can be cooled from the outer periphery via the cooled water 4. However, the food in the dish 2 is efficiently cooled.

To explain using the specific gravity characteristics of water shown in Fig. 4, the thermal conductivity of water is 0.49 Rcal/mh'c, whereas the thermal conductivity of air is 0.021 Rcal/mh°C. The thermal conductivity of water is 23 times higher than that of air, and
Utilizing the characteristic of water that its specific gravity reaches its maximum at 4°C, at temperatures below 4°C, the natural convection of normal fluids is reversed and convection occurs from the low-temperature side to the high-temperature side.

As a result, the water 4 that comes into contact with the cold storage device 1 on the lower surface is cooled, and the hot plate 2 can be cooled by the cooled water 4.

Since this container 2 is usually made of ceramic or metal material with high thermal conductivity, the food in the dish 2 can be efficiently cooled.

Furthermore, since the upper container 1a of the cold storage device 1 has a bowl-shaped central flat portion and the entire container is shaped like a plate, it can be used even when food is directly placed thereon, and this has the effect of more efficient cold storage.

Since the cold storage device 1 is removable from the inside of the refrigerator, it can be stored outside the refrigerator when not needed, making effective use of the space inside the refrigerator.
A Kodari Kasumi Akigaku 4L-Hasanasu ψshih-1 There is a space effect.

〔Effect of the invention〕

According to the present invention, there is an effect that food can be efficiently cooled.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a cold storage device equipped with the present invention. FIG. 2 is a longitudinal cross-sectional view of a refrigerator equipped with the cold storage device of the present invention, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4 is a diagram showing the specific gravity characteristics of water. 1...Cold storage device, 3...Food. 1a... Upper container, 4... Water, 1 a'
...Central flat part, 5...Refrigerator box, 1b.
...lower container, 13...freezer compartment, 1c...
・Flange, 13a...shelf support, 1d...
Cold storage material, 14...refrigeration room. 1e...legs, 2...plates,

Claims (1)

[Claims] 1. A cold storage device for a refrigerator, comprising a container provided in a freezing chamber and a cold storage agent filled in the container, and characterized in that the container is shaped like a bowl.