Mobile air conditioner and refrigerant leakage detection method thereof

Abstract

The invention discloses a mobile air conditioner and a refrigerant leakage detection method thereof. The method comprises the following steps that when a compressor is started, the temperature average value T1Ave of the windward side of an evaporator and the temperature average value T2Ave of a coil pipe of the evaporator are obtained; when the operation time of the compressor reaches the first preset time, the temperature average value T1uc of the windward side of the evaporator and the temperature average value T2uc of the coil pipe of the evaporator are obtained every other second preset time, and when the operation time of the compressor reaches the third preset time, the return air temperature of a condenser, the exhaust temperature of the compressor and the working current of the compressor are obtained; and according to the T1Ave, the T1uc, the T2Ave, the T2uc, the return air temperature of the condenser, the exhaust temperature of the compressor and the working current of the compressor, whether the mobile air conditioner has a refrigerant leakage fault or not is judged. The method can effectively judge whether the mobile air conditioner has a refrigerant leakage fault or not.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a mobile air conditioner and a refrigerant leakage detection method thereof. Background technique [0002] Mobile air-conditioning technology has changed from the early stage of not fetching water to the current dual-wind wheel fetching water to cool the condenser. The capacity and energy efficiency are getting higher and higher while the cabinet remains unchanged. With the help of the development of split unit technology, the mobile air conditioner has been greatly improved. However, due to its own structural characteristics, the mobile air conditioner cannot achieve the same level as the split unit in some aspects. For example, the existing refrigerant leakage detection and control technology has a good protective effect on the system and compressor, but due to the structural characteristics of the mobile air conditioner, if it is directly borrowed, the following probl...

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Problems solved by technology

[0003] The mobile air conditioner will produce water during heating operation, which will accumulate on the chassis below the condenser. If the water level of the chassis is not collected during this process, and the water is drained to the chassis at the same time, it will cause too much condensed water and freeze Phenomenon, and then ice blocks the air duct of the condenser, making the system temperature too low, there is a possibility of misjudgment of refrigerant leakage, which greatly reduces the cooling or heating running time of the system, and makes consumers mistakenly believe that the air conditioner is not working well

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