Air-conditioning system and control method of the air-conditioning system
An air conditioning system and control terminal technology, applied in space heating and ventilation, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve the problem of air conditioning heating, insufficient cooling capacity, unstable power grids in towns and villages, and large range of changes, etc. question
Active Publication Date: 2017-01-11
MIDEA GRP CO LTD
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Problems solved by technology
[0002] At present, the normal working voltage range that can be guaranteed by the design of ordinary household air conditioners is usually between 150V and 242V in China, and between 150V and 253V in foreign countries. When the voltage is too low or too high, the air conditioner will not work normally. Work, thus affecting the cooling and heating effect of the air conditioner
In some foreign countries or regions and some remote rural areas in China, due to the existence of objective problems such as power shortage and instability of township power grids, the supply voltage of user power grids varies widely, and the voltage is often lower than 150V or higher than 260V. Ordinary air conditioners cannot start or run normally without an unstable power supply voltage and without a voltage stabilizer
When the power grid voltage is too low, in order to avoid overheating of the PFC circuit, the existing air conditioner has to adopt the method of limiting the high-frequency operation of the compressor, which leads to the problem of insufficient heating and cooling capacity of the air conditioner, which affects the performance of the air conditioner. comfort
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[0036] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] The invention provides an air conditioning system.
[0038] refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of the first embodiment of the air conditioning system of the present invention; figure 2 It is a structural schematic diagram of the second embodiment of the air conditioning system of the present invention.
[0039] In one embodiment, the air conditioning system includes a compressor 10 and an outdoor fan 20, and also includes a switch module 30, a first PFC module 40, a second PFC module 50, a control unit 60, a first inverter 70 and a second inverter transformer 80, wherein:
[0040] The input end of the switch module 30 is connected to the mains power grid, and the mains power grid inputs the grid voltage to the switch module 30; the output end of the switch modu...
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The invention discloses an air conditioning system. The input end of a switching module is connected with an electric supply power grid, the output end of the switching module is connected with the input end of a first PFC module and the input end of a second PFC module, and the control end of the switching module is connected with a control unit. The output end of the first PFC module and the output end of the second PFC module are connected with the input end of a first inverter and the input end of a second inverter, and the control end of the first PFC module and the control end of the second PFC module are connected with the control unit. The output end of the first inverter is connected with a compressor, the output end of the second inverter is connected with an outdoor fan, and the control end of the first inverter and the control end of the second inverter are connected with the control unit. The invention further discloses a control method of the air conditioning system. According to the scheme, the air conditioning system can operate within a wide voltage range, the problem of frequency limiting operation when the voltages of the air conditioning system are too low is solved, and therefore it is guaranteed that the heating capacity and refrigerating capacity of an air-conditioner can be fully performed.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning system and a control method for the air conditioning system. Background technique [0002] At present, the normal working voltage range that can be guaranteed by the design of ordinary household air conditioners is usually between 150V and 242V in China, and between 150V and 253V in foreign countries. When the voltage is too low or too high, the air conditioner will not work normally. Work, thus affecting the cooling and heating effect of the air conditioner. In some foreign countries or regions and some remote rural areas in China, due to the existence of objective problems such as power shortage and instability of township power grids, the supply voltage of user power grids varies widely, and the voltage is often lower than 150V or higher than 260V. Normal air conditioners cannot be started or run normally without an unstable power supply voltage a...
Claims
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IPC IPC(8): F24F11/02
Inventor 韩军良徐永才
Owner MIDEA GRP CO LTD
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