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A control method, device and multi-connection system for starting and stopping multiple compressors of an air conditioner

A technology with multiple compressors and control methods, applied in mechanical equipment, high-efficiency regulation technology, climate sustainability, etc., can solve problems such as easy out-of-step of compressors, eliminate the impact of life, reduce the probability of invalid shutdown, and ensure effective off effect

Active Publication Date: 2021-01-19
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a control method for starting and stopping multiple compressors of an air conditioner, so as to solve the problem that the compressors are prone to out-of-step

Method used

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  • A control method, device and multi-connection system for starting and stopping multiple compressors of an air conditioner
  • A control method, device and multi-connection system for starting and stopping multiple compressors of an air conditioner
  • A control method, device and multi-connection system for starting and stopping multiple compressors of an air conditioner

Examples

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Embodiment 1

[0075] Such as figure 1 As shown, it is the flow chart of the control method for starting and stopping multiple compressors of the air conditioner according to the embodiment of the present invention Figure 1 ; Wherein, the control method of multi-compressor start-stop of the air conditioner includes:

[0076] Step 100, after detecting the starting command of the compressor to be started, judging the running status of all the compressors in the same system;

[0077] In the same system, there will be multiple compressors, and we call the compressor to be started the compressor to be started; after detecting the start command of the compressor to be started, the compressor to be started needs to be started, at this time , it is necessary to judge the running status of all the compressors in the system first; this judgment can be made through traversal or other methods, mainly to judge whether all the compressors in the system are in the shutdown state, or whether Whether it i...

Embodiment 2

[0128] As described above, the control method for starting and stopping multi-compressors of an air conditioner is different from this embodiment in that, as Figure 5 As shown, the judging the operating parameters of the compressor to be started and adjusting the compressor to be started according to the judgment further includes:

[0129] Step 041, acquiring the discharge temperature of the compressor to be started;

[0130] Step 051, judging whether the exhaust gas temperature falls within the first preset range;

[0131] The exhaust gas temperature falling within the first preset range means that the exhaust gas temperature is lower than a temperature preset value.

[0132] Among them, when the compressor is working normally, the discharge temperature must meet the requirements of the compressor specifications. If the discharge temperature is too high, the compressor will be easily damaged, resulting in shortened service life of the compressor. In addition, the higher th...

Embodiment 3

[0147] As described above, the control method for starting and stopping multi-compressors of an air conditioner differs from this embodiment in that the operating parameters of the compressors to be started are judged and the compressors to be started are judged according to the judgment. The machine is adjusted, which is the corresponding content in step 200; the specific process of the step 500 of judging the operating parameters of the compressor to be started and adjusting the compressor to be started according to the judgment is the same as the The specific process of judging the operating parameters of the compressor to be started and adjusting the compressor to be started according to the judgment in step 200 is the same, the difference is only in the first preset range and the second preset range. The three preset ranges have certain differences.

[0148] Preferably, in order to facilitate the judgment of whether the operating parameters of the compressor to be started...

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Abstract

The invention provides an air conditioner multi-compressor start-stop control method and device and a multi-split system. The control method comprises the steps that after a start command of to-be-started compressors is detected, the operating states of all compressors in the same system are judged; if all the compressors are in a stop state, the to-be-started compressors are adjusted; after operating parameters of the to-be-started compressors fall within a first preset range, the to-be-started compressors are started; if some compressors are in a start state, the operating frequency of the compressors in the start state is lowered; the to-be-started compressors are adjusted; and the to-be-started compressors are started after the operating parameters fall within a third preset range. Through the control method, by detecting the factors affecting starting such as the operating parameters of the to-be-started compressors and the compressors in the start state, the to-be-started compressors can be started after the start conditions of the to-be-started compressors are reached, and thus the possibility of out-of-synchronization of the to-be-started compressors is greatly lowered.

Description

technical field [0001] The invention relates to the technical field of air conditioner control, in particular to a control method, device and multi-connection system for starting and stopping multi-compressors of an air conditioner. Background technique [0002] With the rapid development of my country's economy in recent years, people's living standards are improving day by day, and the use of air conditioners is becoming more and more common. The multi-compressor air conditioner system has a large cooling and heating capacity, which can meet the cooling and heating requirements of large places, and is widely used in hotels, restaurants, schools, theaters, shopping malls, office buildings, residential buildings, hospitals and other places. [0003] However, in this kind of air conditioner system, because it is installed in the same system, if the compressor is not properly controlled, it is easy to cause the compressor to lose its step, which has a great impact on the life ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/30F24F11/64F24F11/77
CPCY02B30/70
Inventor 陈红黄绍敏
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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