Multi-split air conditioning system pipeline noise control method and multi-split air conditioning system
A technology of multi-connected air conditioners and control methods, applied in the direction of noise suppression, space heating and ventilation details, heating methods, etc., can solve the problems of large initial opening and pipeline liquid flow noise, etc. Smooth flow rate change, cost-saving effect
Active Publication Date: 2019-11-05
NINGBO AUX ELECTRIC
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Problems solved by technology
[0005] In order to solve the above problems, the present invention provides a method for controlling pipeline noise of a multi-connected air-conditioning system and a multi-connected air-conditioning system. By controlling the opening degree of the electronic expansion valve of the indoor unit in the heating standby pipeline, the problem of noise caused by the standby pipe in the prior art is solved. The problem of pipeline liquid flow noise caused by the large initial opening of the electronic expansion valve of the indoor unit of the indoor unit, while ensuring the system reliability of the multi-connected air conditioning system
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[0036] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0037] Such as Figure 1-2 As shown, a schematic diagram of a multi-connected air-conditioning system has one outdoor unit 1 and three indoor units 2, the three indoor units 2 are connected in parallel, and are connected to the outdoor unit and the compressor 3 respectively, and the pipeline of each indoor unit Indoor unit electronic expansion valve 6, gas pipe sensor 10 and liquid pipe sensor 11 are installed. In this embodiment, the first indoor unit is in the heating start state, and the second and third indoor units are in heating standby state, that is, multi-line The air conditioning system has one indoor unit startup pipeline and two indoor unit standby pipelines.
[0038] The method for controlling pipeline noise of a multi-connec...
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The invention provides a multi-split air conditioning system pipeline noise control method and a multi-split air conditioning system. The multi-split air conditioning system involves an indoor unit heating starting up pipeline and an indoor unit heating standby pipeline, an electronic expansion valves is arranged on the indoor unit pipeline, and the noise of the indoor unit heating standby pipeline is controlled by controlling the opening degree and an opening closing mode of the electronic expansion valve on the indoor unit heating standby pipeline. According to the control method, an existing air conditioner pipeline does not need to be changed, only control program logic of the opening degree of the electronic expansion valve of the indoor unit is changed, the cost is saved, the noise is controlled, and the reliability of the system is ensured.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method for controlling pipeline noise of a multi-connected air-conditioning system and the multi-connected air-conditioning system. Background technique [0002] The multi-connected air-conditioning system has multiple indoor units used in parallel. In the heating mode, some pipelines of the indoor units are in the power-on state, and some pipelines are in the standby state. In order to ensure the reliability of the multi-connected air-conditioning system, the heating standby pipeline The electronic expansion valve of the indoor unit will maintain a certain opening degree, but the refrigerant in the heating state is generally in a gas-liquid two-phase state before the electronic expansion valve of the indoor unit. The refrigerant in the gas-liquid two-phase state contains a large number of air bubbles. When the refrigerant in the phase state passes through the small op...
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Login to View More IPC IPC(8): F24F11/64F24F11/84F24F13/24
CPCF24F13/24F24F2013/247F24F11/64F24F11/84
Inventor 侯丽峰秦宪赵攀汪云强
Owner NINGBO AUX ELECTRIC