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Method for controlling oil return in dual compressors with equal capacities

A technology of oil return control and dual compressors, which is applied in the field of compressors, can solve problems such as insufficient oil in the compressor, damage to the compressor, uneven oil, etc., and achieve the effect of improving the service life

Inactive Publication Date: 2007-05-09
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, for dual compressors, especially two compressors with equal compression capacity, due to long-term operation, the oil in the two compressors is not uniform, and the oil in the compressor is insufficient, resulting in damage to the compressor

Method used

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  • Method for controlling oil return in dual compressors with equal capacities
  • Method for controlling oil return in dual compressors with equal capacities
  • Method for controlling oil return in dual compressors with equal capacities

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Embodiment Construction

[0025] Hereinafter, the oil return control method of equal volume dual compressors of the present invention will be described in detail in conjunction with the accompanying drawings.

[0026] In the oil return control method of equal-quantity dual compressors of the present invention, an oil equalization operation control program is added to the operation control program of the compressors, and the program includes two operation programs that alternately control the operation of the two compressors.

[0027] As shown in Figure 2 and Figure 3, this control program is to alternately carry out the following two control processes when the oil equalization operation signal is received:

[0028] The first control process (as shown in Figure 2) is: Step S1. Receive oil equalization operation signal; Step S2. Two compressors run at the same time; Step S3. Determine whether the running time of the two compressors is longer than 2 hours, when it is more than 2 hours, enter S4, return to...

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Abstract

A method for controlling return oil of double compressor with equal volume includes judging whether operation period of two compressors are more than two hours or not and carrying out oil balance supply control if it is when both compressors are operated, judging whether stop time of A compressor is more than one minute or not and stopping operation of B compressor as well as starting A compressor up if it is when operation of A compressor is stopped, judging whether stop time of B compressor is more than on minute or not and starting B compressor up as well as stopping oil balance supply if it is. The second method is the same as said one but compressor is opposite down.

Description

technical field [0001] The present invention relates to a compressor. In particular, it relates to an oil return control method for equal-capacity dual compressors capable of maintaining uniform and equal amounts of machine oil in the dual compressors and improving the service life of the compressors. Background technique [0002] Fig. 1 is a structural schematic diagram of an outdoor unit for an air conditioner with its front open. [0003] As shown in Figure 1, the outdoor unit of the air conditioner with dual compressors includes: a rectangular hexahedron casing 110 with an opening structure formed on the inside to form an accommodating space; 130 ; the outdoor heat exchanger 140 disposed along the inner periphery of the casing 110 for exchanging heat with the refrigerant. [0004] The casing 110 includes: a chassis 111 arranged at the bottom to support the liquid storage tank 120, a double compressor 130, and a heat exchanger 140 with a rectangular planar structure; a ...

Claims

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Application Information

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IPC IPC(8): F04B49/00F04B41/06
Inventor 刘建振
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD