Control method and control system of air conditioning system
An air-conditioning system and control method technology, applied in heating and ventilation control systems, space heating and ventilation, heating and ventilation safety systems, etc., can solve the problems of lack of refrigerant in air-conditioning systems, to ensure reliable operation and improve reliability Effect
Inactive Publication Date: 2015-12-16
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0004] In view of this, the present invention provides an air conditioning system and its control method to solve the problem of lack of refrigerant in the air conditioning system caused by the accumulation of refrigerant in the non-working indoor and outdoor units in the prior art
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[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0054] An embodiment of the present invention provides a control method of an air-conditioning system to solve the problem of lack of refrigerant (such as fluorine) in the air-conditioning system due to the accumulation of refrigerant in the inoperative indoor and outdoor units in the prior art.
[0055] The air-conditioning system in the present invention has substantially the same structure as the air-conditioning system in the prior art,...
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The invention provides a control method and a control system of an air conditioning system. The control method comprises the steps of: judging if the air conditioning system is short of refrigerants according to parameters of a working indoor unit or outdoor unit; if so, judging if the air conditioning system has an idle outdoor unit; if so, controlling a first electromagnetic valve and a second electromagnetic valve of the idle outdoor unit to be opened, and controlling a second electronic expansion valve and a second electromagnetic valve of the working outdoor unit to be opened; if not, judging if the air conditioning system has an idle indoor unit; if so, controlling an electronic expansion valve of the idle indoor unit to be opened; and if not, controlling the air conditioning system to give an alarm of lacking refrigerants, so that the problem of shortage of the refrigerants in the air conditioning system due to accumulation of the refrigerants in the idle indoor unit and outdoor unit is solved, the reliability of the compressor is effectively improved, and the reliable operation of the air conditioning system is guaranteed.
Description
Technical field [0001] The present invention relates to the field of air conditioning technology, and more specifically, to a control method and control system of an air conditioning system. Background technique [0002] Refrigerant, such as fluorine, is a substance that completes the thermal cycle in the air-conditioning system. It absorbs the heat of the object to be cooled and transfers the absorbed heat to the cooling water or air to reduce the temperature of the object. However, when the refrigerant in the air-conditioning system is insufficient, such as lack of fluorine, it will cause the compressor discharge temperature and the motor temperature to be too high, which will easily burn the motor and reduce the life of the compressor. [0003] Especially for a central air-conditioning modular system consisting of multiple outdoor units and multiple indoor units, the refrigerant is easy to accumulate in the non-working indoor units and non-working outdoor units, resulting in a l...
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IPC IPC(8): F24F11/00
Inventor 于艳翠胡强艾芳洋沈军杨健卢景斌
Owner GREE ELECTRIC APPLIANCES INC