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Compressor protection method, device and air conditioner

A compressor protection and compressor technology, applied in heating methods, mechanical equipment, space heating and ventilation, etc., can solve problems such as unbalanced protection of compressor pressure, and achieve the effect of avoiding damage

Active Publication Date: 2020-11-03
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is that when multiple compressors are connected in parallel, the existing compressor protection method cannot protect against the pressure imbalance between the compressors

Method used

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  • Compressor protection method, device and air conditioner
  • Compressor protection method, device and air conditioner
  • Compressor protection method, device and air conditioner

Examples

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Comparison scheme
Effect test

no. 1 example

[0032] Please refer to figure 2 , the embodiment of the present invention provides a compressor protection method. The compressor protection method can be applied to the air conditioner 100 . Such as figure 2 As shown, the above compressor protection method may include the following steps:

[0033] Step S101, when each compressor is in the running state, acquire the running state parameters of each compressor.

[0034] In the embodiment of the present invention, the operating state parameter refers to a parameter that changes with the operation of the compressor 102, which can characterize or affect the operating condition of the compressor 102. The operating state parameter can be the discharge pressure of the compressor 102, input current, etc. The air conditioner 100 may include two compressors 102 or at least three compressors 102 .

[0035] As an implementation, when the air conditioner 100 includes two compressors 102, the operating state parameters of each compre...

no. 2 example

[0071] Please refer to Figure 5 , the embodiment of the present invention provides a compressor protection device 200 . The compressor protection device 200 described above may be applied to the air conditioner 100 . Such as Figure 5 As shown, the compressor protection device 200 may include: an acquisition module 201 , a judgment module 202 and a control module 203 .

[0072] The acquiring module 201 is configured to acquire the operating state parameters of each compressor when each compressor is in an operating state.

[0073] In this embodiment of the present invention, the obtaining module 201 may be used to execute step S101 in the first embodiment.

[0074] Optionally, when the multiple compressors 102 are two compressors 102, each compressor 102 corresponds to one acquisition unit 101, and the operating state parameters include exhaust pressure and input current; the acquisition module 201 is specifically used for: when When the operating frequency of each compre...

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Abstract

The invention provides a compressor protection method and device and an air conditioner, and relates to the technical field of the air conditioner. The compressor protection method and device can be applied to the air conditioner. The compressor protection method comprises the following steps that when each compressor is in an operation state, parameters of the operation state of each compressor are obtained; whether pressure among multiple compressors is unbalanced is judged according to the parameters of the operation state of each compressor; and when it is judged that the pressure among the multiple compressors is not balanced, the operation states of the multiple compressors are controlled. Compared with the prior art, the compressor protection method has the advantages that the parameters of the operation state of each compressor are obtained so as to judge whether the multiple compressors are in an operation state of unbalanced pressure, meanwhile, the operation states of the multiple compressors are controlled when the multiple compressors are in an operation state of the unbalanced pressure, so that damage caused by operation in an unbalanced state to the compressors can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a compressor protection method and device and an air conditioner. Background technique [0002] The safety protection control of the refrigeration compressor is a necessary condition to ensure the safe operation of the air conditioner. The commonly used compressor protection methods are mostly based on the current, temperature and other parameters of a single compressor to protect and control a single compressor. [0003] However, at present, for compressors with relatively large cooling capacity, the parallel connection of multiple compressors is generally used to realize the high-power refrigeration of a single unit. Affected by various factors, the pressure imbalance between the compressors is prone to occur. If the existing method is used to protect a single compressor, the compressor may be worn or even damaged. Contents of the invention [0004] The problem solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/86
CPCF24F11/61F24F11/64F24F11/86
Inventor 孙方华陈红扶胜根廖哲永
Owner NINGBO AUX ELECTRIC