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Compressor ultralow-temperature safe operation control method and device, equipment and storage medium

A technology of safe operation and control method, which is applied in the field of compressors, can solve problems such as heat pump failure, compressor super mechanical strength, and affect user experience, so as to reduce mechanical strength stress, avoid heat pump failure, and avoid super mechanical strength operation Effect

Active Publication Date: 2021-04-30
GUANGDONG PHNIX ECO ENERGY SOLUTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the difference between the discharge pressure and the suction pressure of the compressor is too large, the compressor will run beyond its mechanical strength, which will lead to the failure of the heat pump and affect the user experience.

Method used

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  • Compressor ultralow-temperature safe operation control method and device, equipment and storage medium
  • Compressor ultralow-temperature safe operation control method and device, equipment and storage medium
  • Compressor ultralow-temperature safe operation control method and device, equipment and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0039] figure 1A flow chart of a compressor ultra-low temperature safe operation control method provided in Embodiment 1 of the present application is given. The compressor ultra-low temperature safe operation control method provided in this embodiment can be executed by a compressor ultra-low temperature safe operation control device. The ultra-low temperature safe operation control device can be realized by means of software and / or hardware, and the ultra-low temperature safe operation control device of the compressor can be composed of two or more physical entities, or can be composed of one physical entity. Generally speaking, the ultra-low temperature safe operation control device of the compressor may be the main control device of the compressor.

[0040] The following description will be made by taking the compressor ultra-low temperature safe operation control device as an example for implementing the compressor ultra-low temperature safe operation control method. ref...

Embodiment 2

[0058] On the basis of the above examples, figure 2 It is a flow chart of another control method for ultra-low temperature safe operation of a compressor provided in Embodiment 2 of the present application. refer to figure 2 , the compressor ultra-low temperature safe operation control method provided in this embodiment specifically includes:

[0059] S210. Preset the discharge pressure threshold corresponding to different suction pressures of the compressor, the discharge pressure threshold is set according to the discharge pressure boundary value information, and the discharge pressure boundary value corresponds to the compressor under different suction pressures The maximum discharge pressure value allowed for safe operation;

[0060] S220. After the compressor is started, detect the real-time suction pressure value and the real-time discharge pressure value of the compressor, and determine the corresponding discharge pressure threshold according to the real-time suctio...

Embodiment 3

[0066] On the basis of the above examples, image 3 It is a schematic structural diagram of a compressor ultra-low temperature safe operation control device provided in Embodiment 3 of the present application. refer to image 3 , the compressor ultra-low temperature safe operation control device provided in this embodiment specifically includes: a setting module 31 , a detection module 32 and an adjustment module 33 .

[0067] Wherein, the setting module 31 is used to pre-set the discharge pressure threshold corresponding to different suction pressures of the compressor, the discharge pressure threshold is set according to the discharge pressure boundary value information, and the discharge pressure boundary value corresponds to different The maximum discharge pressure value allowed for safe operation of the compressor under the suction pressure;

[0068] The detection module 32 is configured to detect the real-time suction pressure value and the real-time discharge pressure...

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Abstract

The embodiment of the invention discloses a compressor ultralow-temperature safe operation control method and device, equipment and a storage medium. According to the method, exhaust pressure thresholds corresponding to different suction pressures of a compressor are preset, after the compressor is started, the real-time suction pressure value and the real-time exhaust pressure value of the compressor are detected, the corresponding exhaust pressure threshold is determined, when the real-time exhaust pressure value reaches the exhaust pressure threshold, according to the present frequency modulation stage of the compressor, the corresponding frequency modulation manner is adopted to carry out compressor frequency modulation, through compressor frequency modulation, the difference value between the suction pressure and the exhaust pressure of the compressor is reduced, then the mechanical strength stress in the compressor is further reduced, the compressor is prevented from operating with ultra-mechanical strength, a heat pump fault is further avoided, and user use experience is optimized.

Description

technical field [0001] The embodiments of the present application relate to the technical field of compressors, and in particular to a method, device, equipment, and storage medium for controlling ultra-low temperature safe operation of compressors. Background technique [0002] At present, with the development and progress of heat pump energy-saving technology, the ambient temperature range used by heat pumps is getting wider and wider. Especially after using the air-injection enthalpy-enhancing compressor with R410a refrigerant, the temperature range in which the compressor can operate stably has been extended to below -35°C, making the heat pump adaptable to a wider range of ambient temperatures. [0003] However, according to the operation characteristics of the heat pump, when it operates in an ultra-low temperature environment, the suction pressure of the compressor is relatively small, and the discharge pressure is relatively high, which will cause a relatively large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B30/02
CPCF25B49/022F25B30/02Y02B40/00
Inventor 刘志力雷朋飞吴思朗叶景发李操炫
Owner GUANGDONG PHNIX ECO ENERGY SOLUTION