An air conditioner electronic expansion valve stuck adjustment control method and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to a regulation control method for getting-stuck of an electronic expansion valve of an air conditioner and the air conditioner. When the air conditioner is turned on, the electronic expansion valve provides an initial opening degree, the difference value delta T of the indoor temperature T[0] and the pipe inlet temperature T[inlet] of an evaporating pipe is detected in the operating process of the air conditioner, the difference value delta T of the indoor temperature T[0] and the pipe inlet temperature T[inlet] of the evaporating pipe is detected again after the air conditioner operates for the time upsilon, whether the air conditioner executes the normal electronic expansion logic or not is judged accordingto the value of delta T, if yes, it shows that the air conditioner normally operates, and otherwise an alarm is given. Linkage control is performed according to the difference value between the pipe inlet temperature of the evaporating pipe and the indoor temperature, the getting-stuck phenomenon of the electronic expansion valve is automatically judged, the electronic expansion valve is adjustedwith pertinence according to the specific temperature difference value, the electronic expansion valve is adjusted in corresponding steps precisely according to the different getting-stuck conditionsof the electronic expansion valve, the getting-stuck phenomenon of the electronic expansion valve is reduced, and the problem of cold medium adjustment abnormity caused by the getting-stuck is repaired.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner electronic expansion valve stuck adjustment control method and an air conditioner. Background technique [0002] The air conditioner is the air conditioner (Air Conditioner). Refers to the equipment that uses manual means to adjust and control the temperature, humidity, flow rate and other parameters of the ambient air in a building or structure. It generally includes cold source / heat source equipment, cold and hot medium transmission and distribution system, terminal devices and other auxiliary equipment. It mainly includes refrigeration host, water pump, fan and pipeline system. The terminal device is responsible for using the cold and heat from the transmission and distribution to specifically deal with the air state, so that the air parameters of the target environment meet the requirements. At present, in the operation control process of the ai...

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Problems solved by technology

At present, in the operation control process of the air conditioning unit, a single control method is used to control the opening of the electronic expansion valve, that is, the temperature difference between the temperature entering the evaporator tube and the temperature of the evaporator tube is used to calculate and issue instructions to control the opening of the electronic expansion valve. However, during the use of this method, when the electronic expansion valve freezes, the tube temperature difference cannot reflect the real room temperature, but the electronic expansion valve is still controlled by the temperature difference of the evaporating tube, which will affect the user At the same time, the long-term operation of the unit will also cause damage to some parts, which will affect the long-term operation reliability of the air conditioning unit

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