Refrigerating air conditioner system of liquefied natural gas automobile

Abstract

The invention discloses a refrigerating air conditioner system of a liquefied natural gas automobile. A compressor, a condenser, a heat exchanger, a temperature sensor, a pressure sensor, an expandingvalve, an evaporator and a controller system are included; the heat exchanger is connected with the condenser and a liquefied natural gas pipeline; the temperature sensor and the pressure sensor areconnected with the heat exchanger; the control system is connected with the compressor, the temperature sensor, the pressure sensor and the expanding valve; and the expanding valve is connected with the evaporator. The refrigerating air conditioner system of the liquefied natural gas automobile combines the advantages of a compressed steam refrigerating manner and a refrigerating manner utilizingliquefied natural gas evaporation heat absorbing, and has the beneficial effects that influences on the refrigerating capacity by engine loads are small, and energy is saved. The system overcomes thedefect that the energy consumption of the compressed steam refrigerating manner is large, and can also overcome the defect that the refrigerating capacity is affected by the engine loads during liquefied natural gas evaporation refrigerating.

Description

technical field [0001] The invention relates to a refrigerating and air-conditioning system, in particular to a refrigerating and air-conditioning system for a liquefied natural gas (LNG) vehicle, and belongs to the technical field of air-conditioning and refrigeration. Background technique [0002] At present, the refrigeration and air-conditioning system used in automobiles is usually a compressed vapor refrigeration system. When the air-conditioning system is cooling, the refrigerant vapor is compressed in the air-conditioning compressor, and the pressure and temperature increase to become high-temperature and high-pressure steam. The high-temperature and high-pressure refrigerant vapor is cooled in the condenser, and the temperature is lowered to become a liquid refrigerant. The liquid refrigerant enters the evaporator through the expansion valve to evaporate and become vapor, absorbing heat and cooling. During the refrigeration process, the air conditioner compressor mu...

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Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the existing air conditioning systems, and propose an automotive air conditioning system that combines compressed vapor refrigeration and liquefied natural gas evaporation heat absorption refrigeration. Overcome the disadvantage that the refrigerating capacity is affected by the engine load when liquefied natural gas is evaporatively refrigerated

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