Air conditioner circulating refrigeration device for LNG (Liquefied Natural Gas) vehicle

Abstract

The invention discloses an air conditioner circulating refrigeration device for an LNG (Liquefied Natural Gas) vehicle. The air conditioner circulating refrigeration device comprises an LNG steel cylinder, a temperature control device, an air conditioner evaporator and an engine, wherein the LNG steel cylinder is connected with the temperature control device through a first pipeline, the temperature control device is connected with the air conditioner evaporator through a second pipeline, the air conditioner evaporator is connected with the engine through a third pipeline, a solenoid valve is installed on the first pipeline, a pressure stabilizer is arranged on the third pipeline, the LNG steel cylinder and the pressure stabilizer are connected with a fourth pipeline, a gasifier is installed on the fourth pipeline, a control device outlet temperature sensor is installed at the outlet of the temperature control device, a vehicle internal temperature sensor is installed in the vehicle, and the control device outlet temperature sensor, the vehicle internal temperature sensor and the solenoid valve are controlled by an electric control device. The air conditioner circulating refrigeration device additionally comprises a heat exchanger. The first medium inlet and the first medium outlet of the heat exchanger are arranged in the first pipeline, the second medium inlet of the heat exchanger is communicated with the outlet of the air conditioner evaporator through a backflow pipeline, and the second medium outlet of the heat exchanger is connected with the second pipeline. The air conditioner circulating refrigeration device for the LNG vehicle has the advantages of low cost and good refrigerating effect.

Description

Technical field [0001] The invention relates to the field of vehicle air conditioners, in particular to an LNG vehicle air conditioner circulating refrigeration device. Background technique [0002] With the depletion of petroleum resources and the emphasis on environmental protection, countries have become more and more stringent on automobile exhaust emission standards, which has accelerated the development of alternative fuels. Natural gas has become one of the main alternative energy sources for automobile fuels due to its advantages of environmental protection, energy saving and economy. Especially LNG (liquefied natural gas) is gradually being used by passenger cars for its safety, cleanliness, high loadability rate, and low cost of use. In recent years, my country's "West-East Gas Pipeline" and other LNG development projects have advanced rapidly, which has further promoted the development of LNG buses, and LNG buses have become popular throughout the country. [0003] At p...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an LNG vehicle air-conditioning cycle refrigeration device, which solves the problems of high cost and energy waste of conventional vehicle air conditioners or refrigerating and refrigerating equipment that use compressors to refrigerate, and makes full use of natural gas The cooling capacity and heat of the air conditioner achieve the dual purposes of reducing manufacturing costs and saving energy, so that the cooling capacity of the air conditioner can meet the requirements

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