Evaporative condensation type refrigeration and heating air conditioner

Abstract

The invention discloses an evaporative condensation type refrigeration and heating air conditioner. The output end of a compressor is connected with a four-way valve, and outlets of the four-way valveare connected with the inlet end of a heat dissipater, an evaporative plate-type heat exchanger and an evaporator fluorine outlet pipe through a first channel, a second channel and a third channel correspondingly; and the output end of the heat dissipater is connected with the inlet end of a drying filter through a first one-way valve, the evaporative plate-type heat exchanger is connected with the inlet end of the drying filter through a second one-way valve, the output end of the drying filter is connected with the inlet end of an expansion valve through a liquid storage device, the outputend of the expansion valve is connected with the evaporative plate-type heat exchanger through a third one-way valve, the outlet end of the expansion valve is connected with the inlet end of a two-wayvalve, the outlet end of the two-way valve is connected with an evaporator through an evaporator fluorine inlet pipe, the evaporator is connected with the inlet end of a gas-liquid separator throughthe evaporator fluorine outlet pipe, and the outlet end of the gas-liquid separator is connected with the inlet end of the compressor. The evaporative condensation type refrigeration and heating air conditioner is good in reliability and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, in particular to an evaporative condensation heating and cooling air conditioner. Background technique [0002] When the evaporative-condensing heating and cooling air conditioner is in heating operation, if the outdoor temperature is too low, the evaporator of the air conditioner is prone to frost. When the evaporator is frosted to a certain extent, it must be defrosted, otherwise it will affect the air conditioning heat effect. The defrosting action of ordinary evaporative-condensing heating and cooling air conditioners is usually the switching of the four-way valve, that is, switching from heating operation to cooling operation. If the switching of the four-way valve is too frequent, one will affect the service life of the four-way valve, and the other will be Reduce the heating effect and affect the comfort of the air conditioner. The refrigeration circuits of the existing evaporat...

AI Technical Summary

Problems solved by technology

[0002] When the evaporative-condensing heating and cooling air conditioner is in heating operation, if the outdoor temperature is too low, the evaporator of the air conditioner is prone to frost. When the evaporator is frosted to a certain extent, it must be defrosted, otherwise it will affect the air conditioning heat effect

The defrosting action of ordinary evaporative-condensing heating and cooling air conditioners is usually the switching of the four-way valve, that is, switching from heating operation to cooling operation. If the switching of the four-way valve is too frequent, one will affect the service life of the four-way valve, and the other will be Reduce the heating effect and affect the comfort of air conditioning

The refrigeration circuits of the existing evaporative and condensing heating and cooling air conditioners are equipped with multiple solenoid valves or multiple four-way valves. The structure of the refrigerant circulation circuit is complex, and the valves will inevitably leak, resulting in high failure rates, poor reliability, and low efficiency.

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