JPS63231149A - Adsorption type refrigeration cycle - 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 [Industrial Field of Application] The present invention relates to an adsorption refrigeration cycle, and particularly to an adsorption refrigeration cycle suitable for obtaining a cold source below O'C.

[Conventional technology]

Some devices are equipped with heat dissipation means and are connected to a refrigeration cycle in which water is sealed as a refrigerant to a container filled with an adsorbent such as zeolite. This adsorption type refrigeration cycle includes an adsorption type refrigeration cycle in which water vapor adsorbed on zeolite or the like is evaporated by a heating device, and a cold heat source is obtained by cooling the water accompanying the evaporation, which is used for cooling.

An example of this will be explained with reference to FIG. 2 in which solar heat is used as a heat source.

Reference numeral 17 denotes a container containing an adsorbent such as zeolite, which absorbs solar heat as shown by the solid arrow 12 and radiates heat by sky radiation at night as shown by the broken arrow 13. The adsorbent storage container 1
A radiator 14 is connected to 7, and a water container 15 is connected to the other end of the radiator 14, and a heat exchanger 16 is installed in the water container 15.

18 is a fan for radiating heat from the radiator 14. When the heat radiation from the radiator 14 is used as a heating source in the closed water adsorption refrigeration cycle having the above configuration, the adsorbent storage container 17 is heated to separate the moisture in the adsorbent as water vapor, and the radiator 14 is heated. In step 14, the latent heat of condensation of water vapor is released to obtain heating ability, which is converted into water and stored in a water container 15. When obtaining a cooling heat source from the heat exchanger 16,
The water in the water container 15 is adsorbed as water vapor by the adsorbent from which water has been separated, and the heat exchanger 16 can obtain a cooling capacity by using the water cooled by the latent heat of vaporization as a cold heat source. By repeating this, heating capacity and cooling capacity can be generated intermittently.

This type of adsorption refrigeration cycle was published in 1982, No. 4.
Discussed in Vol. 6, No. 7, "Chemical Industry", pages 23 to 25.

[Problem that the invention seeks to solve]

The above conventional technology uses water as a refrigerant, so
When freezing food or making ice that requires a cold source below ℃,
Since the solidification temperature of water is 0°C, there is a problem in that the water as a refrigerant solidifies, making it impossible to obtain a cold source at temperatures below 0°C.

An object of the present invention is to provide an adsorption refrigeration cycle that can provide a cold source at temperatures below 0°C.

[Means for solving problems]

The above purpose includes a container filled with an adsorbent inside, a condenser connected to the container via a check valve, a liquid reservoir connected to the condenser, and a liquid reservoir connected to the liquid reservoir. An on-off valve,
It consists of a pressure reducing device connected to the on-off valve and an evaporator connected to the pressure reducing device, and is achieved by providing a heater in the container and sealing a fluorocarbon gas refrigerant in the container.

[Effect]

Since the solidification temperature of the fluorocarbon gas sealed in the container is 0°C or lower, the evaporator can generate cold heat at 0°C or lower.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1st
The figure is a block diagram of the adsorption refrigeration cycle of the present invention. 1 is an adsorbent storage container filled with an adsorbent 1a such as silica gel. This adsorbent storage container 1 is equipped with a heat radiation means 2 and a heating means 3. A gas refrigerant delivery pipe 4 is connected to the adsorbent storage container 1 via a check valve 5, and is connected to a liquid reservoir 7 having a condensing radiator 6. A pressure reducing mechanism 9 is connected to the lower part of the liquid reservoir 7 via an on-off valve 8. An evaporator 10 is connected to the other end of the pressure reducing mechanism 9. The other end of the evaporator 10 is connected to the adsorbent storage container 1 via a check valve 11. 12 is a cold heat source utilization system including the evaporator 10.

In the adsorption type refrigeration cycle as described above, a refrigerant such as fluorocarbon is sealed in the refrigeration cycle, and the on-off valve 8 is closed to heat the cycle. A.A.
When the s2 container 1 is heated to 30°C to 40°C, the adsorbent 1a
The fluorocarbon-based gas refrigerant adsorbed on the container 1 is heated and becomes a high-pressure gas refrigerant, which is discharged from the container 1 to the condensing radiator 6. In the condensing heat radiator 6, the high-pressure gas refrigerant liquefies by releasing latent heat of condensation. The liquefied refrigerant is stored in the liquid reservoir 7. Thereafter, when the heating device 3 stops heating the container 1 and the on-off valve 8 is opened in conjunction with the cold source utilization system 12, the low-temperature, low-pressure liquid refrigerant in the high-pressure liquid refrigerator 10 that has passed through the pressure reduction mechanism 9 is removed. The latent heat of vaporization cools the cold heat source utilization system 12 and becomes a low-pressure gas refrigerant, which is adsorbed by the adsorbent 1a in the container 1 while releasing heat of adsorption to the heat radiating means 2. By repeating this intermittently, it becomes possible to continuously cool the cold heat source utilization system 12. In addition, adsorbent storage container 1. Heat dissipation system for condensation 6. There are two sets of liquid reservoir 7, pressure reducing mechanism 9, etc.
It goes without saying that if one evaporator 10 is equipped, the cooling effect can be maintained continuously.

The hole diameter of the adsorbent for adsorbing the fluorocarbon-based refrigerant gas is, for example, because the molecular diameter of the fluorocarbon 12 refrigerant gas used in refrigerators is approximately 5 angstroms, so this embodiment is used for refrigerators. In this case, a silica gel adsorbent with a hole diameter of about 13 angstroms is suitable.

〔Effect of the invention〕

According to the present invention, since a fluorocarbon-based refrigerant gas is used in the adsorption type refrigeration cycle, it is possible to obtain a cold heat source of 0° C. or lower.

FIG. 1 is a block diagram of an adsorption type refrigeration cycle equipped with an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional water adsorption type refrigeration cycle.

1... Freon adsorbent storage container, 2... Heat dissipation means, 3
...II heat means, 6... condensing heat radiation system, 7... liquid reservoir section.

8... Opening/closing valve, 9... Pressure reduction mechanism, IO... Natural generator, 11... Cold heat source utilization system, 14... Heat radiator, 15...
...Water container, 16...Heat exchanger, 17...Moisture adsorbent storage container.

't-1121 1.70〉Adsorbent 1-fold storage container 6. For condensation v! ! L! .

Claims (1)

[Claims] 1. A container filled with an adsorbent, a condenser connected to the container via a check valve, a liquid reservoir connected to the condenser, and a liquid reservoir It consists of an on-off valve connected to the on-off valve, a pressure reducing device connected to the on-off valve, and an evaporator connected to the pressure reducing device. An adsorption refrigeration cycle characterized by the fact that it is sealed. 2. The adsorption type refrigeration cycle according to claim 1, wherein the adsorbent is a silica gel-based adsorbent.