Noise control method and controller of multi-connected air conditioner system

Abstract

The invention relates to the technical field of air conditioners, in particular to a noise control method and a controller of a multi-connected air conditioner system, and aims to solve the problems that according to an existing technical scheme which is characterized in that replacement of a large-diameter electronic expansion valve is adopted to solve the problem of the high standby noise of a heating indoor unit, the effect is poor, and the cost is high. The noise control method of the multi-connected air conditioner system comprises the following steps that when the running mode of the multi-connected air conditioner system is a heating mode, the running time of the heating mode is acquired; and when the value of the running time is larger than a time threshold value, an expansion valve corresponding to an indoor unit which is located in a set room and in a standby state is controlled to be closed. By the adoption of the noise control method and the controller of the multi-connected air conditioner system, due to the fact that the expansion valve corresponding to the indoor unit in the set room is controlled to be completely closed, noise control can be conducted over the set room, the noise generated by the indoor unit of the room is completely eliminated, and the user experience is greatly improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a noise control method and a controller of a multi-connected air conditioning system. Background technique [0002] In recent years, the multi-connected air conditioning system has gradually become the preferred solution for air conditioning in office buildings, shopping malls, apartments and other collective places due to its advantages of convenient installation, little impact on the appearance of buildings, and significant cooling / heating effects. When the multi-split air-conditioning system is running in heating mode, in order to avoid the accumulation of refrigerant, the electronic expansion valve of the heating indoor unit that is usually not turned on will reserve a certain opening degree (that is, the reference reserved opening degree) so that the refrigerant can participate in the circulation of the system . However, when the refrigerant flows, since the fan of...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of poor effect and high cost in the existing technical solution of replacing the large-diameter electronic expansion valve to solve the standby noise of the heating indoor unit, the present invention provides a A noise control method for a multi-connected air-conditioning system. The multi-connected air-conditioning system includes an outdoor unit and a plurality of indoor units, and each of the indoor units is provided with an expansion valve. It is characterized in that the noise control method includes the following steps :

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