The defrosting method of multi-connected air conditioner system
A multi-connected system and air-conditioning technology, which is applied in air-conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve the problems of large amount of frosting, many terminals of internal units, poor defrosting effect, etc., and meet the requirements of Defrost requirements, the effect of increasing the return air superheat
Active Publication Date: 2017-05-24
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0002] In the existing air conditioner multi-connection system, there are many terminals of the indoor unit of the indoor unit, and the frosting area of the outdoor unit is large and the amount of frosting is large. During defrosting, the internal units of each terminal have a low-temperature refrigerant passing through, which is sensitive to the room temperature and user temperature. Both have a reducing effect and have a greater impact on the comfort of the user
Although many technologies for optimizing defrosting have been developed in the industry at present, these technologies generally have the problem of adding additional costs and devices, and the defrosting effect is poor
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0018] figure 1 It is a structural schematic diagram of an air conditioner multi-connected system according to an embodiment of the present invention. Such as figure 1 The air conditioner multi-split system shown includes a compressor 50 connected by pipelines, a four-way valve 30, an outdoor unit 20, an indoor unit 10, a main expansion valve 40 and a main three-way valve 60 for exhaust gas distribution control. The unit 10 includes internal units 1, 2, 3, 4, and the two ends of each internal unit 1, 2, 3, 4 are respectively provided with a high-temperature gas distribution control unit connected to each internal unit 1, 2, 3, 4 through the A terminal. The one-way valves 11a, 12a, 13a, 14a and the refrigerant distribution control three-way valves 11b, 12b, 13b, 14b. In this embodime...
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The invention discloses an air conditioner multi-online system and a defrosting method. The air conditioner multi-online system comprises a compressor, a four-way valve, an outdoor unit, an indoor unit, a main expansion valve and a main three-way valve which is used for exhaust distribution control; two ends of internal units are provided with high-temperature gas distribution control three-way valves and refrigerating agent distribution control three-way valves which are connected with the internal units through common ends; one branched ends of the high-temperature gas distribution control three-way valves are connected to a common end of the main three-way valve; two branched ends of the refrigerating agent distribution control three-way valves are connected to the main expansion valve; pipelines of the refrigerating agent distribution control three-way valves from the one branched ends to the main expansion valve are provided with expansion valves; the main expansion valve is connected with the outdoor unit. According to the air conditioner multi-online system, when a part of internal units are in utilization states, a part of internal units are in unused states, the internal units in the unused states can be served as evaporators to reduce influences to house temperature and comfort degrees from defrosting.
Description
technical field [0001] The invention relates to an air-conditioning system, in particular to a defrosting method for an air-conditioning multi-connected system. Background technique [0002] In the existing air conditioner multi-connection system, there are many terminals of the indoor unit of the indoor unit, and the frosting area of the outdoor unit is large and the amount of frosting is large. During defrosting, the internal units of each terminal have a low-temperature refrigerant passing through, which is sensitive to the room temperature and user temperature. Both have a lowering effect and have a greater impact on the comfort of the user. Although many technologies for optimizing defrosting have been developed in the industry at present, these technologies generally have the problem of adding additional costs and devices, and the defrosting effect is poor. Contents of the invention [0003] An embodiment of the present invention provides a defrosting method for a...
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IPC IPC(8): F25B47/02F24F11/02
CPCF24F5/001F24F11/30F24F11/41F24F11/83F24F11/85
Inventor 周中华谢惠媚吴会丽李俊峰
Owner GREE ELECTRIC APPLIANCES INC