JPH0131904Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cold storage box that utilizes the latent heat of vaporization of water produced by zeolite.

(Prior Art) As disclosed in Japanese Patent Application Laid-open No. 153342/1983, this type of cold storage is constructed by connecting a cooling water container provided inside an insulating box and a zeolite container provided outside the insulating box via a valve. There are known devices that communicate with each other.

(Problem that the invention aims to solve) However, in this case, when water vapor is adsorbed on zeolite, the zeolite generates heat because this adsorption is an exothermic reaction, the zeolite becomes hot, and the amount of water vapor adsorbed decreases. Naturally, the latent heat of vaporization of the cold water taken away from the water surface of the cooling water container decreases, and water vapor is adsorbed from the surface of the zeolite to the deep part, and adsorption equilibrium is also reached from the surface, so water vapor reaches the deep part of the zeolite. It takes a long time to reach the adsorption equilibrium, and the water evaporation rate gradually slows down, making it impossible to effectively utilize the latent heat of evaporation of water.Furthermore, repeated use makes it difficult to maintain an airtight state of the cooling water container. It had the following disadvantages.

Therefore, the present invention aims to increase the contact area of the zeolite with water vapor in the zeolite container, reduce the depth of the zeolite layer in the direction of adsorption and diffusion of water vapor, and also make the cooling water container easy to degas. With the goal.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be explained using FIGS. 1 to 3 corresponding to the embodiments.
The present invention provides a cold storage in which a cooling water container 2 provided inside an insulating box 1 and a zeolite container 4 provided outside the insulating box 1 are communicated via a switching valve 3, in which the zeolite container 4 is used to store zeolite. Inner case 4a made of a mesh or perforated plate
and an airtight outer casing 4b that surrounds the inner casing 4a via a flow path 5, a heating element 6 is provided in the center of the outer casing 4b, and the cooling water container 2 is connected to the main chamber 2a. and a deaeration chamber 2b connected to the main chamber 2a via a small-diameter branch passage 7.
It is characterized in that an open valve 8 connected to the outside air is provided in the branch pipe 7, and a heating body 9 is provided in the branch pipe 7.

(Function) According to the present invention, the zeolite in the inner casing 4a of the zeolite container 4 comes into contact with water vapor through the flow path 5 with a large contact area, so that the adsorption and diffusion of water vapor is accelerated and the zeolite can be filled in a short time. In addition to being able to cool the inside of the zeolite, it is possible to efficiently heat and regenerate the heat supplied by heating from the center of the zeolite without directly radiating the heat to the outside.
Further, degassing of the cooling water container 2 can be easily carried out by discharging the water vapor in the degassing chamber 2b, which is generated by heating a portion of the cooling water in the branch passage 7, through the release valve 8.

(Embodiment) An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 indicates a heat insulating box, and a cooling water container 2 provided inside the box 1 is provided outside the box 1 via a switching valve 3. It is connected to the zeolite container 4. These are the same as conventional ones, but in the present invention, as shown in FIG. and an airtight outer casing 4b surrounding the zeolite via a flow path 5, and a heating element 6 consisting of a heater or a heat pipe for regenerating and heating the zeolite is provided in the center of the outer casing 4b, and a cooling water container 2, as shown in FIG. 2, is formed of a main chamber 2a and a degassing chamber 2b connected to the main chamber 2a via a small-diameter branch passage 7, and the degassing chamber 2b is connected to a release valve 8. A heating element 9 consisting of a heater or a heat pipe is provided in the branch passage 7 to penetrate the deaeration chamber 2b and heat a part of the branch passage 7. Here, a plurality of the zeolite containers 4 were connected to the cooling water container 2 in parallel.

Note that the flow path 5 is the inner case 4a in the one shown in FIG.
Although the inner case 4b is formed by being internally placed inside the outer case 4b with a gap, it may be formed, for example, by making the surface of the inner case 4a uneven or wavy.

According to the embodiment of the present invention configured as described above, when the cooling water container 2 and the zeolite container 4 are communicated with each other by switching the switching valve 3, the cooling water container 2
The water vapor inside the box 1 is adsorbed by the zeolite and accelerates the evaporation rate of the cooling water, and the inside of the box 1 is cooled by the latent heat of evaporation of the cooling water. Because it is surrounded by water vapor, it smoothes the flow of water vapor, increases the contact area between zeolite and water vapor, and reduces the depth of the zeolite layer in the direction of adsorption and diffusion of water vapor, increasing the adsorption efficiency of zeolite. It is also possible to regenerate and heat the zeolite after use using the outer casing 4.
b Since the heat is heated by the central heating element 6, the supplied heat can be efficiently heated and regenerated without being directly radiated to the outside.Furthermore, the cooling water container 2 can be degassed after repeated use by straightening the branch path 7. box 1
When the heater 9 is tilted so that the heating element 9 heats a local minute amount of cooling water present at the top of the branch passage 7, the inside of the deaeration chamber 2b is filled with water vapor in a short time, and this water vapor is removed by opening the opening valve. The cooling water container 2 is easily evacuated by discharging to the outside air via the cooling water container 8 .

(Effect of the invention) According to the present invention, the zeolite container 4 is comprised of an inner casing 4a made of a mesh or a perforated plate that accommodates the zeolite, and an airtight outer casing 4b that surrounds the inner casing 4a via the flow path 5. and the outer casing 4
Since the heating element 6 is provided in the center of the zeolite container 4, the water vapor of the zeolite in the zeolite container 4 is smoothly adsorbed, and the heating during the regeneration of the zeolite is effective. 2a
and a deaeration chamber 2b connected to the main chamber 2a via a small-diameter branch passage 7, and an open valve 8 connected to the outside air is provided to the deaeration chamber 2b.
Since the heating element 9 is provided in the cooling water container 2, degassing of the cooling water container 2 can be easily performed, and the cooling water container 2 can be effectively operated for a long period of time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic diagram, FIG. 2 is a system diagram, and FIG. 3 is a sectional view of a zeolite container. 1...Insulation box, 2...Cooling water container, 2a
...Main room, 2b...Deaeration chamber, 3...Switching valve,
4... Zeolite container, 4a... Inner case, 4b...
Outer casing, 5...flow path, 6...heating body, 7...branch path, 8...release valve, 9...heating body.

Claims (1)

[Scope of utility model registration request] In a cold storage in which a cooling water container provided inside an insulating box and a zeolite container provided outside the insulating box are communicated via a switching valve, the zeolite container is connected to an inner casing made of a mesh or a perforated plate for accommodating zeolite. , an airtight outer casing surrounds the inner casing via a flow path, a heating element is provided in the center of the outer casing, and the cooling water container is provided with a main chamber, and a small diameter casing is provided in the main chamber. What is claimed is: 1. A cold storage refrigerator, characterized in that it is formed of a degassing chamber connected to the outside via a branch passage, the degassing chamber is provided with an open valve connected to the outside air, and a heating body is provided in the branch pipe.