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Multi-online indoor unit turning-off control method and multi-online device

A control method and multi-connection technology, applied in the field of multi-connected indoor unit shutdown control and multi-connected devices, can solve problems such as blowing out cold air, and achieve the effect of constant air temperature, uniform reduction of expansion valve opening, and guaranteed load.

Active Publication Date: 2019-06-28
NINGBO AUX ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention aims to propose a multi-connected indoor shutdown control method to solve the current problem of blowing cold air during the multi-connected indoor shutdown process

Method used

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  • Multi-online indoor unit turning-off control method and multi-online device
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  • Multi-online indoor unit turning-off control method and multi-online device

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Embodiment Construction

[0052] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0054] The multi-connected system includes an outdoor unit and at least two indoor units. When working, one outdoor unit drives multiple indoor units to run; each indoor unit can be independently controlled to start and shut down. When the multi-split unit is in heating mode, in order to avoid the failure of the outdoor unit caused by the sudden change of the load of the multi-split unit caused by part of the indoor shutdown, the current multi-split system will make the indoor unit The fan of the indoor unit continues to run for a period of time before shutting down; therefore, the indoor unit is no longer heating. Therefore, if the fan of the indoor unit runs for too long or the speed o...

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Abstract

The invention provides a multi-online indoor unit turning-off control method and a multi-online device and relates to the technical field of air-conditioners. The multi-online indoor unit turning-offcontrol method comprises the steps that an indoor unit turning-off instruction is received; multi-online operation parameters are detected; and according to the multi-online operation parameters, thefan rotating speed of an indoor unit to be turned off, the expansion valve opening degree of the indoor unit and compressor frequency of an outdoor unit are reduced synchronously and gradually. According to the multi-online indoor unit turning-off control method, while the fan rotating speed of the indoor unit to be turned off is reduced, the expansion valve opening degree of the indoor unit to beturned off is reduced synchronously, the frequency of a compressor of the outdoor unit is reduced synchronously, therefore before the wind output temperature of the indoor unit fluctuates, an expansion valve of the indoor unit to be turned off and the compressor of the outdoor unit are adjusted in an adaptation manner in advance, it is ensured that the wind output temperature of the indoor unit to be turned off keeps constant, the situation that in the turning off process of some multi-online indoor units blow out cold wind is avoided, and the experience degree of users is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a multi-connected indoor shutdown control method and a multi-connected device. Background technique [0002] The multi-connection system includes multiple indoor units. When the multi-connection unit is in heating mode, if some indoors are shut down, the load of the multi-connection system will decrease, resulting in a decrease in the compressor frequency of the outdoor unit; If the running state of the indoor unit changes and the multi-connected system fails, the currently shut down indoor unit fan needs to continue to run for a period of time; if the fan running time or fan speed control of the shut down indoor unit is unreasonable, it will cause cold air to be blown out during the shut down process of the indoor unit. , affecting the experience of air conditioner users. Contents of the invention [0003] In view of this, the present invention aims to propose a cont...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/77F24F11/89F24F110/10
CPCY02B30/70
Inventor 侯丽峰秦宪赵攀汪云强闫博
Owner NINGBO AUX ELECTRIC
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