Defrosting method and device for multi-connection air conditioner
A technology for multi-connected air conditioners and air conditioners, applied in the field of air conditioners, can solve the problems of long defrosting operation time, influence of indoor side heating effect, etc., so as to reduce the hidden danger of compressor liquid compression, shorten the duration, and speed up Effect of defrost speed
Inactive Publication Date: 2009-06-17
HAIER GRP CORP +1
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[0006] The invention provides a method and device for defrosting a multi-connected air conditioner to solve the problem that the defrosting operation time of the system is too long, which affects the indoor heating effect
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[0026] The defrosting process of the outdoor unit is actually a heat release process of the outdoor heat exchanger. Therefore, the temperature inside the room will drop during the defrosting process. Therefore, the shorter the defrosting time of the system is, the smaller the impact on the indoor heating effect will be. Using the defrosting method and device for multi-connected air conditioners provided by the present invention, after the outdoor units that meet the defrosting conditions enter the defrosting operation, each outdoor unit judges whether it needs to exit the defrosting operation, and first reaches the exiting defrosting operation condition. The outdoor unit first exits the defrosting operation, and immediately enters the heating operation after exiting the defrosting operation, and the outdoor units that do not meet the conditions for exiting the defrosting operation continue to perform the defrosting operation. After the outdoor unit that exits the defrosting o...
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The invention discloses a multiple air-conditioner defrosting method. The method comprises the following procedures: one or a plurality of outdoor air-conditioners in the multiple air-conditioning unit automatically judges whether the defrosting condition is satisfied in the thermal operation and if yes, the multiple air-conditioning enters the defrosting state; the outdoor air-conditioner automatically judges whether the condition for quitting the defrosting operation is satisfied in the defrosting process and if yes, the outdoor air-conditioner quits the defrosting operation and converts to the thermal operation. Through the method and device of the embodiment of the invention, the outdoor air-conditioners automatically judge whether the condition for quitting the defrosting operation is satisfied after the multiple air-conditioning unit enters the defrosting operation and if yes, the outdoor air-conditioner directly converts to the thermal operation; the high-temperature refrigerant output with the outdoor air-conditioner after entering the thermal operation can accelerate the defrosting of the outdoor air-conditioner still in the defrosting operation, thus reducing the liquid compression hidden troubles of compressor in the defrosting period to certain extent and effectively shortening the continuous time of the unit defrosting process.
Description
technical field [0001] The invention relates to an air conditioner, in particular to a defrosting method and device for a multi-connected air conditioner. Background technique [0002] The multi-connected air conditioner unit is a single refrigeration cycle system composed of multiple outdoor units connected in parallel and multiple indoor units connected in parallel. When the ambient temperature is low and the heating operation is performed, the heat exchanger of the outdoor unit in operation is prone to frosting. Frosting of the outdoor heat exchanger will greatly reduce its heat transfer capacity, resulting in poor indoor heating effect of the system. When the frost on the heat exchanger reaches a certain level, the heating effect of the indoor mechanism will become very poor, and even cold air will be blown. At this time, it is necessary to remove the frost on the outdoor heat exchanger to restore the heat exchange effect on the outdoor side and improve the heating eff...
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IPC IPC(8): F25B47/02
Inventor 国德防毛守博何建奇涂虬王海胜
Owner HAIER GRP CORP