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Oil return control method of compressor, compressor and heat exchange system

A technology of heat exchange system and oil return control, which is applied in the fields of oil return control of compressors, compressors and heat exchange systems

Inactive Publication Date: 2019-08-16
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an oil return control method, a compressor and a heat exchange system for a compressor that can avoid the oil-starved operation of the compressor in view of the problem that the compressor is prone to oil-starved operation

Method used

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  • Oil return control method of compressor, compressor and heat exchange system
  • Oil return control method of compressor, compressor and heat exchange system

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Embodiment Construction

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to an oil return control method of a compressor, a compressor and a heat exchange system. The oil return control method of the compressor comprises the following steps of respectively acquiring safe oil level temperature in the compressor and exhaust temperature of the compressor; judging whether the compressor is in an oil shortage operation state or a safe oil level operation state according to the safety oil level temperature and the exhaust temperature; the safe oil level temperature is the temperature of the safe oil level of the compressor; when an oil level of lubricating oil in the compressor is not lower than the safe oil level, the compressor is in a safe oil level operation state; and when the oil level of the lubricating oil in the compressor is lower thanthe safe oil level, the compressor is in an oil shortage operation state. According to the oil return control method of the compressor, whether the compressor is lack of oil can be judged rapidly andaccurately according to the safe oil level temperature and the exhaust temperature, so that the oil shortage operation of the compressor can be effectively prevented, the operation reliability of thecompressor is improved, and the situation that the compressor is damaged due to oil shortage operation is avoided.

Description

technical field [0001] The invention relates to the field of heat exchange equipment, in particular to an oil return control method for a compressor, a compressor and a heat exchange system. Background technique [0002] The current heat exchange equipment, especially the frequency conversion one-to-one heat pump air-conditioning unit, usually increases the flow rate of the refrigerant or causes the unit to return liquid during the operation of the compressor, according to the frequency of the compressor and the fixed running time of the compressor. The method makes the discharged lubricating oil return to the compressor, thereby completing the oil return control of the compressor, so as to prevent the compressor from running without oil. [0003] However, in the above method, it is impossible to accurately judge whether the compressor is short of oil, so the compressor is often run out of oil due to untimely return of oil, which in turn causes damage to the compressor. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00F25B49/02
CPCF25B31/004F25B49/022
Inventor 胡知耀汪俊勇李志强莫灼均
Owner GREE ELECTRIC APPLIANCES INC
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