Anti-condensation control method and anti-condensation control device for electronic control on refrigerant heat dissipation of air conditioner

Abstract

The invention discloses an anti-condensation control method for electronic control on the refrigerant heat dissipation of an air conditioner. The anti-condensation control method comprises the following steps: an environment temperature T1 and a refrigerant heat dissipation pipe temperature T2 are acquired, and the temperature difference value t between the environment temperature T1 and the refrigerant heat dissipation pipe temperature T2 is calculated; if the temperature difference value t is greater than a first preset temperature, the opening degree of an electronic expansion valve of an outdoor unit is controlled to be increased in a preset control manner; and because the opening degree of the electronic expansion valve of the outdoor unit is increased, interception for a refrigerant is reduced and then the flow rate of the refrigerant is increased, the refrigerant flows through a refrigerant heat dissipation pipe and then the refrigerant heat dissipation pipe temperature T2 rises, and the temperature difference value t is reduced in the case of the invariable environment temperature T1, so that an electronic control board is prevented from generating condensation. The invention further discloses an anti-condensation control device for electronic control on the refrigerant heat dissipation of an air conditioner. The method and the device solve the problem that the electronic control board generates dew to influence the electronic control reliability when the refrigerant heat dissipation pipe temperature is lower than a dew point temperature during the running of the air conditioner.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling heat dissipation and electronic control of condensation prevention of refrigerant in an air conditioner. Background technique [0002] At present, it is a market trend to use refrigerants to dissipate heat from electronic control modules. By reducing the heat generation of frequency conversion modules and components, the high-temperature cooling capacity can be improved to achieve ultra-high-temperature cooling operation; and the sheet metal heat dissipation grill can be reduced to reduce the noise of the whole machine. However, when the opening degree of the electronic expansion valve of the external unit and the external unit of the system is adjusted according to the exhaust temperature, the electronic expansion valve of the external unit and the external unit will be closed due to the low exhaust temperature, If the throttling is l...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a control method for air conditioner refrigerant heat dissipation electronic control and anti-condensation, which aims to solve the problem of condensation on the electric control board caused by the temperature of the refrigerant heat dissipation pipe being lower than the outdoor ambient temperature after the electronic valve opening of the external unit is closed. Reflects the problem of generating condensation and affecting the reliability of electronic control

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