Air conditioner oil return control method and system, storage medium, and air conditioner

An oil return control and storage medium technology, which is applied in the field of an air conditioner oil return control method and its system, and can solve the problems of the air conditioner being unable to adjust the oil return amount and the like.

Active Publication Date: 2021-08-06
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an air conditioner oil return control method and its system in view of the above-mentioned defects of the prior art, aiming at solving the problem that the air conditioner in the prior art cannot adjust the oil return amount according to the oil demand of the system question

Method used

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  • Air conditioner oil return control method and system, storage medium, and air conditioner
  • Air conditioner oil return control method and system, storage medium, and air conditioner
  • Air conditioner oil return control method and system, storage medium, and air conditioner

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Experimental program
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Effect test

specific Embodiment 1

[0052] Under rated refrigeration conditions:

[0053] Since v=(D2-D1) / t, D2 is located at the position of 300mm, D1 is located at the position of 200mm of the oil component, and the value of t is 10s. Then v=10mm / s.

[0054] Under the rated cooling condition, Vs1 is 5mm / s and n is 2; at this time, the action of oil return expansion valve 3 is:

[0055] ΔP1=n*(v-Vs1)=2*5=10pls. That is, the oil return expansion valve is closed by 10 steps.

specific Embodiment 2

[0057] Under rated thermal conditions:

[0058] Since v=(D2-D1) / t, D2 is located at 300mm, D1 is located at 500mm of oil content, and the value of t is 10s. Then v=-20mm / s.

[0059] Under the rated heating condition, Vs2 is -10mm / s and m is 3; at this time, the action of oil return expansion valve 3 is:

[0060] ΔP2=m*(Vs2-v)=30pls. That is, the oil return expansion valve is opened 30 steps larger.

[0061] Based on the above air conditioner oil return control method, the present invention also provides a preferred embodiment of a storage medium:

[0062] The storage medium described in the embodiment of the present invention stores the oil return control program of the air conditioner, and when the oil return control program of the air conditioner is executed, the steps of the oil return control method for the air conditioner as described in any one of the above embodiments are implemented.

[0063] Based on the above air conditioner oil return control method, the present...

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Abstract

The invention discloses an air conditioner oil return control method and its system, storage medium, and air conditioner. The method comprises the steps of: detecting the oil level change speed in the oil separator in real time; adjusting the opening of the oil return expansion valve according to the oil level change speed Spend. It can judge the oil demand of the system according to the change speed of the oil level in the oil separator, and control the oil return volume by adjusting the opening of the oil return expansion valve of the oil separator to ensure that the oil volume of the system is always in a stable and balanced state.

Description

technical field [0001] The invention relates to the technical field of air conditioners, and in particular, to a method and a system for controlling oil return of an air conditioner. Background technique [0002] Multi-unit air conditioners are characterized by many internal units, long pipelines and large drop, so they have higher requirements for lubricating oil, but too much or too little suction of lubricating oil has a negative effect on energy efficiency. At present, the oil return in the multi-line industry mainly depends on the size and time of the load output of the air conditioner to control the oil return operation, and the amount of lubricating oil returned from the oil is basically a fixed flow method, using flow control components such as capillary tubes. control. [0003] In this way, the actual oil demand of the system cannot be well fed back. Under different load, pressure and temperature conditions, the requirements for the oil return of the lubricating oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B31/00F25B43/02F25B49/02
CPCF25B31/004F25B43/02F25B49/02
Inventor 代文杰颜华周张一鹤李真仲杜泽锋陈龙
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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