Double-layer shell negative pressure absorption refrigeration and air conditioning equipment

Abstract

The invention aims at providing a negative pressure absorption type refrigerating air conditioning device with a double-layer shell to reduce the complexity of a vacuum sealing shell and greatly lower the material and processing cost. The negative pressure absorption type refrigerating air conditioning device with the double-layer shell comprises a generator, a condenser, an absorber and an evaporator, wherein a system solution flows among the generator, the condenser, the absorber and the evaporator; at least one or more of the generator, the condenser, the absorber and the evaporator is / are arranged in the vacuum sealing shell; the negative pressure absorption type refrigerating air conditioning device is characterized in that the vacuum sealing shell comprises an inner layer shell for sealing the system solution and an outer layer shell for vacuum sealing; and a vacuum interlayer without the system solution is formed by non-shared parts between the inner layer shell and the outer layer shell.

Description

technical field [0001] The invention relates to the field of negative pressure absorption refrigeration and air conditioning equipment. Background technique [0002] Negative pressure absorption refrigeration and air conditioning equipment is typically represented by lithium bromide absorption refrigeration and air conditioning equipment. This type of equipment usually uses water as the refrigerant and uses various waste heat sources for cooling or heating, including generators, evaporators, absorbers, condensers, and throttling devices. Its characteristic is that the evaporation and absorption process of heat and mass exchange and the condensation process need to be realized in a negative pressure or vacuum environment lower than atmospheric pressure. The existing negative pressure absorption refrigeration and air-conditioning equipment has a single-layer shell structure, and the single-layer shell structure is used as a vacuum-sealed shell, which contains one or more heat...

AI Technical Summary

Problems solved by technology

Therefore, while the shell is required to be welded and sealed to ensure high vacuum sealing performance, the danger of corrosion of the system solution on the inside of the shell brings the following problems: firstly, the corrosion of the solution on the inside of the shell makes the system solution polluted, and more non-condensable gases are generated to reduce the system performance. and may partially clog the system

Secondly, considering corrosion factors, increasing the wall thickness of the shell leads to an increase in cost

Or require the shell to use high-cost high-strength corrosion-resistant materials such as stainless steel, which will greatly increase the cost of equipment

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