Refrigerating and heating integrated passenger car air conditioner

Abstract

The invention discloses a refrigerating and heating integrated passenger car air conditioner which comprises a closed circulation system consisting of a compressor (2), a condenser (1), an expansion valve (7), a dryer (8) and pipelines. The refrigerating and heating integrated passenger car air conditioner is characterized in that an evaporator (6), the expansion valve and the dryer are arranged on the inner side of a carriage; the compressor is connected with a four-way valve (4) by a one-way valve (3); an inlet of the four-way valve is connected with the one-way valve; three outlets of the four-way valve are connected with the evaporator, a vapor liquid separator (5) and the condenser by the pipelines respectively; a solenoid valve on the four-way valve is connected with a control switch by a lead wire, and controls one of the left outlet and the right outlet in the four-way valve to be opened and the other one to be closed through the control switch; the dryer is provided with pressing sheets on the inner side ends of an inlet liquid storage cavity and an outlet liquid storage cavity; filter screens are arranged on the inner sides of the pressing sheets; a space between the two filter screens is filled with a powdery drying agent; and the expansion valve is a two-way flow expansion valve. The refrigerating and heating integrated passenger car air conditioner has high quality and the function of heating or refrigerating the carriage of a passenger car.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a passenger car air conditioner integrated with cooling and heating. Background technique [0002] As we all know, the air-conditioning refrigeration cycle is composed of four processes: compression, condensation, expansion and evaporation. The compressor sucks low-temperature and low-pressure gaseous refrigerant from the evaporator, compresses it into high-temperature, high-pressure gaseous refrigerant, and sends it to the condenser for cooling. The process absorbs a large amount of heat and generates a cold source. At this time, a blower is used to send it into the car to reduce the temperature inside the car. The high-temperature and high-pressure gaseous refrigeration dissipates heat in the condenser and condenses it into a high-temperature and high-pressure liquid refrigerant. Release heat outward. During the expansion process, the condensed high-temperature and hi...

AI Technical Summary

Problems solved by technology

The gaseous refrigerant flowing out of the evaporator is inhaled by the divisor compressor and enters the next refrigeration cycle. This kind of air conditioner is only suitable for use under high temperature conditions, and cannot be used in cold environments.

Existing automotive air-conditioning and heating systems, especially large and medium-sized passenger cars with high heating requirements, require an independent combustion heating system, a special combustion mechanism or the heat of the engine coolant, and a combustion preheater The comprehensive heating device is used to heat the carriage. These devices not only need to increase facilities, occupy more space in the car, but also increase the production cost of the vehicle.

Images