Screw unit oil return control method, system and screw unit

A technology of oil return control and screw unit, which is applied in the field of compressors, can solve the problems of wasting time, difficult oil return, and affecting the reliability of the unit, so as to improve reliability, increase intelligence, and save time for manual debugging.

Active Publication Date: 2018-02-16
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, if the compressor of the screw unit runs out of oil with liquid, it is difficult to return the oil from the evaporator
When the above situation occurs, it is generally necessary to manually debug after the shutdown, which will affect the reliability of the unit and waste time

Method used

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  • Screw unit oil return control method, system and screw unit
  • Screw unit oil return control method, system and screw unit
  • Screw unit oil return control method, system and screw unit

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the method and system for oil return control of the screw unit and the specific implementation of the screw unit of the present invention will be described below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] see figure 1 , in one embodiment, the oil return control method of the screw unit of the present invention comprises the following steps:

[0032] S100. Obtain an oil level height signal of the oil tank of the compressor of the screw unit through the oil level detection device.

[0033] Wherein, the oil level detection device can be arranged in the oil tank of the compressor of the screw unit, so as to obtain the oil level height signal of the oil tank of the compressor. Specifically, the oil level detection d...

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Abstract

The invention discloses an oil return control method and system for a screw unit. The above method includes: obtaining the oil level signal of the oil tank of the compressor oil tank of the screw unit through the oil level detection device; when the oil level represented by the oil level signal is less than or equal to the first preset oil level, performing Oil return control. The above system includes an oil level detection device and a control device. The above method and system can improve the reliability of the oil return of the screw unit, increase the intelligence of the oil return of the screw unit, and save the time of manual debugging. The invention also discloses a screw unit comprising the oil return control system of the screw unit.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to an oil return control method and system for a screw unit and the screw unit. Background technique [0002] The screw unit is favored by users because of its large cooling capacity and high cooling performance coefficient. In the prior art, if the compressor of the screw unit runs out of oil with liquid, it is difficult to return the oil from the evaporator. When the above situation occurs, it is generally necessary to manually debug after the shutdown, which will affect the reliability of the unit and waste time. Contents of the invention [0003] Based on this, it is necessary to provide an oil return control method for the screw unit capable of automatic oil return. [0004] A method for controlling oil return of a screw unit, comprising the following steps: [0005] Obtain the oil level height signal of the compressor oil tank of the screw unit through the oil level d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B43/02F25B49/02
Inventor 吴宏择罗炽亮龙忠铿刘华李莹陈耿松张丙
Owner GREE ELECTRIC APPLIANCES INC
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