Cooling cylinder compression cycle of rotor-type compressor

Abstract

The invention relates to a cycling system for improving the efficiency of a cooling compressor, cooling cylinder compression cycle for short. The cooling cylinder compression cycle of a rotor-type compressor is mainly realized in four aspects: a. cooling cylinder compression, i.e. performing low-temperature cooling to a compression strong-heat-release cylinder wall surface (defined as a heat cylinder and others are cooling cylinders), coating heat insulating ceramic on the surfaces of a tongue piece and a rolling rotor, pushing compression heat release to a cooled heat cylinder, and increasing the area of the heat cylinder or reduce the rotational speed so as to fully discharge the compression heat release and prevent the discharged gas from overheating and then to reduce the compression net work and the condensation load; b. cooling cylinder gas suction, i.e. performing the isolation of gas phase from heat insulation to high-pressure gas discharge, the cooling and heat cylinders, upper and lower covers and a gas suction pipe, and ensuring the low-temperature characteristic of a gas suction chamber by means of continuous gas suction and heat cylinder cooling so as to obtain greater cold energy; c. oil way improvement, i.e. increasing the gas-suction force; and d. recovery gas discharge overheating and motor heat releasing, for purposes of heating and compensating absorptive lubricant, wherein an absorbent has low partial pressure and strong absorption capability on the surfaces of the cooling cylinders so that the cold energy is further increased and the compression work is further reduced.

Description

technical field [0001] A circulation system of a vapor compression refrigeration compressor, in particular a circulation system of a rotary refrigeration compressor. technical background [0002] The current hermetic compressor, whose guiding theory is the reverse Carnot cycle, isentropic adiabatic compression is considered to be the highest compression efficiency, so the vapor compression process is close to adiabatic compression, and the exhaust temperature can reach 150°C, much higher than the condensation temperature T K 50~55℃, it is obvious that most of the electric energy is converted into exhaust superheating and wasted, and increases the condensation load; while the evaporation pressure P required by the cycle O ~Condensing pressure P K The pressure difference load consumes a small amount of compression net work, which can be found in the M 1 (See the penultimate line on the next page) to do the corresponding pressure difference experiment with nitrogen or air to ...

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Problems solved by technology

[0002] The current hermetic compressor, whose guiding theory is the reverse Carnot cycle, isentropic adiabatic compression is considered to be the highest compression efficiency, so the vapor compression process is close to adiabatic compression, and the exhaust temperature can reach 150°C, much higher than the condensation temperature T K 50~55℃, it is obvious that most of the electric energy is converted into exhaust superheating and wasted, and increases the condensation load; while the evaporation pressure P required by the cycle O ~Condensing pressure P K The pressure difference load consumes a small amount of compression net work, which can be found in the M 1 (Refer to the third last line on the next page) Use nitrogen or air to do the corresponding pressure difference experiment to verify

On the other hand, the heat released by compression and the motor accumulates on the cylinder wall, and the intake air suffers from strong thermal expansion and loses cooling capacity, which further increases the exhaust temperature and increases the condensation load, which worsens the cycle.

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