Unit oil return control method, device and system

A technology of oil return control and unit, applied in the field of control, can solve problems such as indoor temperature reduction

Active Publication Date: 2017-07-18
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method, device and system for oil return control of the unit to at least solve the problem of indoor temperature drop during the oil return control process

Method used

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  • Unit oil return control method, device and system
  • Unit oil return control method, device and system
  • Unit oil return control method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The embodiment of the present invention provides an embodiment of the oil return control system of the unit.

[0035] figure 1 It is a schematic diagram of an oil return control system of a unit according to an embodiment of the present invention. like figure 1 As shown, the system includes: a first judging mechanism 10 and a spraying device 20 .

[0036] The first judging mechanism 10 is used to judge whether the unit enters the oil return control.

[0037] Before judging whether the unit enters the oil return control, obtain the heated liquid in order to absorb heat for the heat exchanger through the liquid sprayed on the heat exchanger, thereby reducing the heat absorption to the indoor side. In order to avoid the phenomenon of dirty blockage and fouling of the heat exchanger caused by long-term use of liquid, the liquid is filtered.

[0038]Optionally, the unit includes a water storage tank, and the water storage tank is used for storing liquid, and the liquid m...

Embodiment 2

[0068] The embodiment of the invention also provides an oil return control method of the unit. It should be noted that the oil return control method of the unit in this embodiment can be used to implement the oil return control system of the unit in the embodiment of the present invention.

[0069] figure 2 It is a flowchart of a method for controlling oil return of a unit according to an embodiment of the present invention. like figure 2 As shown, the method includes the following steps:

[0070] Step S202, judging whether the unit enters oil return control.

[0071] In the technical solution provided in the above step S202 of the present application, it is judged whether the unit enters the oil return control.

[0072] Before judging whether the unit enters the oil return control, obtain the heated liquid in order to absorb heat for the heat exchanger through the liquid sprayed on the heat exchanger. In order to avoid the phenomenon of dirty blockage and fouling of th...

Embodiment 3

[0109] The technical solutions of the present invention will be described below in conjunction with preferred embodiments.

[0110] This embodiment needs to automatically process the tap water before the early oil return control, and eliminate the sodium and magnesium plasma in the tap water to obtain clean water by automatically purifying the tap water. 3. Solenoid valve 4 and other components are controlled to produce clean hot water. After the air conditioner has been running for a period of time, due to the long-term low-frequency operation of the external unit, it enters the reversing oil return control. At this time, the treated clean hot water passes through the pipeline Spray directly onto the heat exchanger, and the heat required for the evaporation of the inner heat exchanger during the oil return process is obtained from clean hot water. At the same time, it reduces the heat absorption from the indoor air, which leads to a decrease in the inner temperature, so as to...

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PUM

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Abstract

The invention discloses a unit oil return control method, device and system. The method comprises the steps that whether a unit starts oil return control is judged; and if the unit starts oil return control, heated liquid is sprayed to a heat exchanger of the unit, and the heated liquid is used for absorbing heat of the heat exchanger in the oil return control process. Through the unit oil return control method, device and system, the effect that the indoor environment temperature drop in the oil return control process is effectively controlled is achieved.

Description

technical field [0001] The invention relates to the field of control, in particular to a method, device and system for oil return control of a unit. Background technique [0002] At present, after the unit has been running in heating mode for a period of time, due to the low-frequency operation of the external unit of the unit, the lubricating oil of the compressor of the unit is discharged into the pipeline and cannot return to the compressor. At this time, in order to ensure the reliable operation of the unit Under normal circumstances, the technical means usually adopted is to switch the unit to refrigeration mode, and at the same time increase the operating frequency of the compressor to generate enough power, and then return the lubricating oil in the pipeline to the compressor, so that during the oil return control The unit cannot heat, and the heat exchanger of the unit absorbs the heat from the indoor side, resulting in a decrease in the indoor temperature during the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B31/00
CPCF25B31/004F25B49/022F25B2700/21F25B2600/25F25B2500/16
Inventor 李耀东莫赤虎许克傅英胜王芳赵振江李龙飞倪毅周鋆昊范建伟谭诚聪刘群波
Owner GREE ELECTRIC APPLIANCES INC
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