Parallel multi-split air conditioner system and defrosting control method
A multi-connection system and parallel technology, which is applied in the direction of refrigerators, compressors, refrigeration components, etc., can solve the problems of prolonging the defrosting time, poor user experience, and reducing the heat exchange effect of the air conditioner, so as to improve the comfort and improve the efficiency of the air conditioner. The effect of frost speed
Active Publication Date: 2014-11-19
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology
Since this solution needs to switch the heat exchange process of the indoor heat exchanger to the evaporation process, the thermal comfort of the room will be affected after the switch, and there will be a sound of refrigerant flushing during the switch, thereby reducing the heat exchange effect of the air conditioner and making the user The experience is poor; in addition, when defrosting, the fan of the indoor unit usually does not rotate, which makes the indoor heat exchanger less effective in evaporating, thus prolonging the defrosting time
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[0024] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] like figure 1 and figure 2 As shown, the preferred embodiment of the present invention proposes a parallel multi-connection system, which can prevent the evaporation process on the indoor side during defrosting of the air-conditioning system, and there is no refrigerant washing sound during reversing, and improve the comfort of the air-conditioning system.
[0026] The parallel multi-connection system includes at least two outdoor units connected in parallel, and the outdoor units connected in parallel are connected through connecting pipes; each outdoor unit includes a compressor 2, a four-way valve 3, an outdoor heat exchanger 4, and a throttling device 9 And the gas side shut-off valve 72 and the liquid side shut-off valve 71, the compressor 2 has an exhaust port and a gas return port; the four-way valve 3...
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The invention discloses a parallel multi-split air conditioner system and a defrosting control method. The parallel multi-split air conditioner system comprises at least two parallel outdoor units. Each outdoor unit comprises a compressor, a four-way valve, an outdoor heat exchanger and a throttling device, wherein the throttling device is connected with an indoor unit through a liquid side stop valve, and the condensation end of the four-way valve is connected with the indoor unit through an air side stop valve. Each outdoor unit further comprises a first pipeline and a second pipeline. A first electromagnetic valve is connected between each throttling device and the corresponding liquid side stop valve. A second electromagnetic valve is connected between the condensation end of each four-way valve and the corresponding air side stop valve. When defrosting is conducted through one outdoor unit, the mode of the outdoor unit conducting defrosting is switched into the refrigerating mode, the outdoor unit conducting defrosting is communicated with the first pipeline and the second pipeline of at least another outdoor unit matched with the outdoor unit conducting defrosting, and the first electromagnetic valve and the second electromagnetic valve of the outdoor unit conducting defrosting are closed. By means of the parallel multi-split air conditioner system and the defrosting control method, no evaporation process occurs on the indoor side during defrosting, no refrigerant scouring sounds exist during reversing, and the comfort degree and defrosting speed of an air conditioner are increased.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a parallel multi-connection system and a defrosting control method. Background technique [0002] At present, in the air conditioning system, there is no fundamental difference between the multi-connected defrosting technology and the one-to-one model defrosting method. The four-way valve is still used to change the direction. After switching from the heating cycle to the refrigeration cycle, the condensation heat is used to melt layer of frost. Since this solution needs to switch the heat exchange process of the indoor heat exchanger to the evaporation process, the thermal comfort of the room will be affected after the switch, and there will be a sound of refrigerant flushing during the switch, thereby reducing the heat exchange effect of the air conditioner and making the user The experience is poor; in addition, when defrosting, the fan of the indoor unit usually doe...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F25B13/00F25B47/02F25B41/04F25B41/06F25B49/02F25B41/20F25B41/24F25B41/34
Inventor 刘清泉
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD