Air conditioner fluorine lack protection method and air conditioner

Abstract

The invention discloses an air conditioner fluorine lack protection method and an air conditioner. The air conditioner fluorine lack protection method comprises the following steps that when the air conditioner operates and refrigerates, the temperature change of an inner disc is monitored in real time, and whether the air conditioner is judged in a normal refrigeration state or not; when the airconditioner is judged to be in the normal refrigeration state, the difference value between the return air temperature and the inner plate temperature is detected, and the difference value is comparedwith a preset first range and a preset second range; when the air conditioner is judged in an abnormal refrigeration state, the fluorine-lack signal is reported, and the fluorine-lack protection operation is started; when the difference value between the return air temperature and the inner plate temperature is in the preset first range, so that the air conditioner is overloaded; and when the difference value between the return air temperature and the inner plate temperature is in the preset second range, the fluorine-deficient signal is reported, and the fluorine-lack protection operation isstarted. According to the method, the misoperation can be effectively prevented, the protection is more accurate, the method is simple, a new hardware facility does not need to be added, only the program needs to be changed on the basis of the existing hardware, the cost is more optimized, and the applicability is stronger.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for protecting an air conditioner against fluorine deficiency and an air conditioner. Background technique [0002] After the test and analysis of the air conditioners with burnt air conditioner compressors reported by the market, it was found that the compressor burnt due to the lack of fluorine in the system accounted for the vast majority. Because, when the fluorine deficiency of the air conditioner reaches more than 30%, the temperature of the motor winding of the compressor will exceed its design stability, resulting in a sharp decline in the life of the winding, so that the life generally does not exceed 2 years. [0003] The existing fluorine-deficiency protection methods for air conditioners generally set several sensors to detect the indoor temperature, so new hardware facilities need to be added, and the cost is relatively high. Moreover, the existing...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an air conditioner with a fluorine-deficiency protection method for an air conditioner in view of the above-mentioned defects of the prior art, aiming to solve the need for new hardware, high cost and Prone to false protection

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