Four-way reversing valve with stopping function

Abstract

The invention provides a four-way reversing valve with the stopping function, belongs to the field of air conditioners, and aims at controlling the flowing direction and distribution of a refrigerant of the air conditioner. Compared with a general four-way reversing valve that only the flowing direction of the refrigerant can be controlled and an air conditioning system is switched between a refrigerating mode and a heating mode, the four-way reversing valve with the stopping function has the advantages that a main valve and a pilot valve are of symmetric structures, and a slide block structure of the main valve is improved, and thus the four-way reversing valve can perform the stopping function; the four-way reversing valve is provided to a refrigerating system and used in match with a stopping valve and a compressor of the refrigerating system, so as to effectively control the distribution of the refrigerant of the refrigerating system, and the optimal refrigerant distribution can be obtained after the air conditioner is stopped, and as a result, the air discharging and cooling speed of the air conditioner started in the refrigerating mode can be effectively increased, and the energy conservation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of valves for air conditioners, in particular to a four-way reversing valve with a cut-off function. technical background [0002] After the current air conditioner is turned off in the cooling mode, the compressor stops working immediately, while the throttle valve keeps a certain opening, and the refrigerant will migrate from the condenser with higher pressure to the high-pressure In the lower evaporator, the refrigerant in the evaporator after shutdown is greater than the refrigerant in the evaporator when the air conditioner is running stably, and the refrigerant in the condenser is smaller than the refrigerant in the condenser when the air conditioner is running stably. After the next start-up, the compressor will migrate a large amount of refrigerant in the evaporator to the condenser. [0003] During the use of the air conditioner, the refrigerant distribution state of the refrigerant in the evaporat...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to provide a four-way reversing valve with a cut-off function to control the migration of the refrigerant in the air conditioner and prevent the evaporator from being established during stable operation in the cooling mode of the air conditioner. The refrigerant distribution state with less refrigerant and more refrigerant in the condenser will return to the distribution state of more refrigerant in the evaporator and less refrigerant in the condenser before starting up after shutdown; to solve the problem in existing air conditioners A large amount of energy is wasted after starting up and the air outlet temperature of the indoor unit of the air conditioner is slow to drop, so as to achieve the purpose of improving the cooling speed of the air outlet and saving energy after the air conditioner is turned on

Images