JPS63153381A - Cold accumulation type 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 regenerator refrigerator that keeps products that require refrigeration or freezing, such as fresh foods and pharmaceuticals, cold, and is used for long-distance delivery or small-lot delivery by loading onto a truck or the like.

As shown in Japanese Utility Model Application Publication No. 60-21681, a conventional cold storage type refrigerator freezes a cold storage agent in a refrigerator installed in a refrigerator, and when it is loaded onto a truck or the like, the latent heat of melting of the cold storage agent is absorbed. It is known that products are kept cold by using them. The cold storage tank of this type of refrigerator, that is, the cooler filled with a cold storage agent and equipped with a refrigerant pipe to freeze this cold storage agent, utilizes the heat of the molten layer of the frozen cold storage agent as described above. In order to efficiently freeze the cold storage agent, the refrigerant pipe is located approximately in the center of the cold storage tank.

Problems to be Solved by the Invention Although there is no problem with the freezing time of the cold storage agent in such conventional cold storage type refrigerators, it is difficult to quickly cool the inside of the refrigerator.
In other words, it is extremely difficult to quickly lower the temperature to a predetermined level because the inside of the refrigerator is cooled through the surface of the cold storage agent. Furthermore, before this type of refrigerator is loaded onto a truck, etc., it is naturally stored in a cold storage operation at the base, and there is often a convenient method of putting the refrigerated cargo in this state to cool it. There was an inconvenience that this could not be done adequately.

The present invention has been made in view of these points, and it is an object of the present invention to provide a cold storage type refrigerator that has a simple configuration and simultaneously functions as a cold storage box that utilizes the latent heat of fusion of a cold storage agent and as a refrigerator that can cool. It is something to do.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a system in which the cooling pipes of the cooling cycle are placed in close contact with the wall surface of the side facing the inside of the box body among the cold storage tanks arranged in the upper part of the heat insulating box body. It was arranged as follows.

Effects of the present invention With the above-described configuration, the cold storage agent in the cold storage tank in contact with the cooling pipe is frozen, and the wall surface of the cold storage tank facing the inside of the refrigerator constitutes a cooling surface to quickly and efficiently cool the inside of the refrigerator. It has both functions as a cold storage box and a refrigerator that can be cooled.
satisfy - something.

Example An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is the cold storage type refrigerator main body, outer box 2.
Inner box 3. It is composed of a box body 6 made of a heat insulating material 4 and a machine room 6 arranged on the top surface of the box body 6. A heat insulating door 7 is pivotally attached to the front surface of the box body 6 so as to be freely openable and closable, and movable casters 8 are provided on the bottom wall. In addition, a box-shaped cold storage tank 9 is arranged in the upper part of the inside of the box body 6, spanning almost the entire surface.
A net shelf 1o is provided in the center, and a drainboard 11 is provided at the bottom.

The machine room 6 has a compressor 12. A condenser 13 and a blower 14 for cooling these are arranged. Compressor 12, condenser 1
3 constitutes a well-known cooling cycle together with a cooling pipe 16 which will be described later.

The cold storage tank 9 has an upper wall 9a made of metal such as stainless steel.

The lower wall 9b, side wall 9C, etc. are configured in a sealed box shape, and the box body 6
The ceiling wall inside the refrigerator is arranged with a space left as an air convection passage. Further, the inside of the tank 9 is filled with a cool storage agent 16 made of a mixture of carbohydrates and an inorganic electrolyte aqueous solution, and furthermore, cooling pipes 16 are installed at approximately equal intervals. That is, the cooling pipe 16 is bent into a meandering shape as shown in FIGS. 3 and 4, and by twisting the bent portion, the straight pipe portion 15a located at the upper portion and the straight pipe portion 15 located at the lower portion are separated.
A and the straight pipe portion 1sb located at the lower part are alternately released. The straight pipe part 15a located at the lower part is fixed with a fixing fitting 17 so as to be in close contact with the wall surface facing the inside of the refrigerator, that is, the lower wall 9b, and the straight pipe part 16b located at the upper part is fixed to the tank 9.
It is placed at the center or above it.

18 is a heat sensitive part of a thermostat (not shown) that performs ON-OFF control of the compressor 11, and is located on the lower wall 9b on the opposite side from the cooling pipe 16, and on the straight pipe section 15 adjacent to the inside of the refrigerator.
It is fixed at approximately the center of b. When the heat sensing part 18 senses a temperature approximately 10'C lower than the melting point of the cold storage agent 16 at this part, that is, if the melting point of the cold storage agent is 16 degrees Celsius, the temperature is -15 degrees Celsius, the thermostat will stop the compressor 11. It is configured.

In the above configuration, when the compressor 12 is operated, cooling operation is started, and the cooling pipe 16 starts freezing the cold storage agent 16 filled in the cold storage tank 9, and the lower wall 9bi
The inside of the refrigerator is forcedly cooled. This cooling operation continues until the thermostat senses a predetermined temperature, which is the complete freezing temperature of the cold storage agent 16. Even if the cold storage agent 16 is disconnected from the power supply, the latent heat of fusion of the cold storage agent 16 can keep the inside of the refrigerator cold for a predetermined period of time, and, for example, it can be mounted on a delivery vehicle to deliver fresh foods. Furthermore, when the power is turned on, the lower wall 9b of the cold storage tank 9, which the cooling pipe 16 is in close contact with, is located inside the refrigerator, so that the cold items stored in the refrigerator can be efficiently and quickly cooled by natural convection. .

Effects of the Invention As is clear from the above description, the present invention has the advantage of being able to efficiently freeze the cold storage agent and cool the inside of the refrigerator with a very simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a cold storage refrigerator according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional view of a cold storage tank, FIG. 3 is a top view of cooling pipes in the cold storage tank, and FIG. Figure IV-I
It is a sectional view taken along the V' line. 5... Box body (insulated box body), 9... Cool storage tank, 9b... Lower wall (wall surface), 15...
Cooling pipe, 1e... Cold storage agent. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2 Figure 4 Saving quiet sb Kuni/- b

Claims (1)

[Claims] a heat insulating box body with an opening/closing door; a box-shaped cold storage tank filled with a cold storage agent and placed in the upper part of the heat insulating box body; a cooling pipe placed to freeze the cold storage agent in the cold storage tank; A cold storage type refrigerator comprising a cooling pipe and a refrigerator attached integrally with a box body and forming a cooling cycle, the cooling pipe being arranged in close contact with the wall surface of the cold storage tank on the side facing the inside of the insulating box body. .