Silica gel- water adsorption refrigerating device without vacuum switch valve

Abstract

The invention provides a silica gel-water adsorption chiller without a vacuum switch valve, which is used for the technical field of refrigerating machines. The left vacuum chamber of the invention consists of a left adsorption bed, a left condenser and a left evaporator; while the right vacuum chamber of the invention consists of a right adsorption bed, a right condenser and a right evaporator. The two vacuum chambers are totally separated with each other and are encircled into a whole by a shell. An integrated cooling water tank of the invention is characterized in that the water tank is divided by clapboard into a cooling water thermal storage tank and a cooling water back-water tank; the cooling water flowing out of the evaporator is mixed in the cooling water thermal storage tank and then provides refrigerating capacity for user terminals, and then the cooling water the temperature of which rises backflows to the cooling water back-water tank, and is transmitted through a cooling pump into the evaporator for cooling. The system realizes the process switched between adsorption bed heating desorption / cooling adsorption through five three-way valves and three solenoid valves, and realizes mass recovery by using the return heat between two evaporators. The adsorption chiller of the invention is simple and reliable in structure, self-automatic in running, and can effectively use the low-grade heat energy.

Description

technical field [0001] The invention relates to an adsorption refrigerator in the technical field of refrigeration, in particular to a silica gel-water adsorption refrigerator without a vacuum switching valve. Background technique [0002] The adsorption refrigeration system uses natural working fluids such as water and methanol as refrigerants, so it is an environmentally friendly refrigeration technology. And the adsorption refrigeration system can be driven by low-temperature waste heat or solar energy, so it can effectively alleviate the shortage of power supply and utilize a large amount of low-grade heat energy. Since the silica gel-water adsorption refrigerator can be driven by a heat source above 65 °C and has the advantages of simple structure and control, it has attracted extensive research by scholars at home and abroad. [0003] Most of the silica gel-water adsorption refrigerators developed internationally and domestically use two beds to be heated and cooled a...

AI Technical Summary

Problems solved by technology

The system only uses one vacuum switching valve to achieve continuous cooling output, but in the process of using the vacuum switching valve to achieve mass recovery, since the refrigerant vapor flows from one vacuum chamber to the other, it must be ensured for a long time. The mass return time is used to achieve the balance of the amount of refrigerant in the two vacuum chambers, resulting in a decrease in the average cooling capacity of the system

Moreover, the adsorption refrigerator adopts separated heat pipe technology to realize cooling output, which avoids the use of electric control valves in the frozen water circuit, but due to the heat transfer temperature difference between the left / right isolator and the evaporator, the cooling capacity is lost

In addition, the number of electronically controlled valves in the system is relatively large, so the system control program is relatively complicated and the reliability is reduced

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