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Refrigeration capacity control method and device

A control method and control device technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as cooling capacity loss, achieve the effect of reducing cooling capacity loss and ensuring the reliability of oil return

Inactive Publication Date: 2017-10-20
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a cooling capacity control method and device to solve the problem of cooling capacity loss during the high-frequency operation of the unit in the prior art

Method used

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  • Refrigeration capacity control method and device
  • Refrigeration capacity control method and device

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0023] figure 1 is a flowchart of a cooling capacity control method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0024] Step S101, setting the optimal oil return frequency;

[0025] Step S102, detecting the actual operating frequency of the unit;

[0026] Step S103 , by comparing the actual operating frequency with the optimal oil return frequency, adjusting the opening of the oil return solenoid valve accordingly to control the loss of cooling capacity.

[0027] In this embodiment, according to the deviation value between the actual operating frequency of the unit and the optimal oil return frequency, the opening of the oil return solenoid valve is adjusted. During high-frequency operation, the high-pres...

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Abstract

The invention discloses a refrigeration capacity control method and device. The method comprises the steps of setting the optimal oil return frequency; detecting the actual operation frequency of a unit; and adjusting the opening degree of an oil return electromagnetic valve correspondingly by comparing the actual operation frequency and the optimal oil return frequency so as to control the loss of refrigeration capacity. According to the refrigeration capacity control method and device, the opening degree of the oil return electromagnetic valve can be controlled, and therefore the oil return reliability of the unit can be ensured, meanwhile, the loss of the refrigeration capacity caused by gas mixing of the high-pressure side and the low-pressure side of the unit through an oil return capillary pipe in the high-frequency operation process can be reduced, and the problem of the loss of the refrigeration capacity in the high-frequency operation process of the unit in the prior art can be solved.

Description

technical field [0001] The present invention relates to the field of unit technology, in particular to a cooling capacity control method and device. Background technique [0002] At present, if there is a large amount of refrigerant injected into the inverter refrigeration unit, more refrigerant oil will enter the entire refrigeration system with the refrigerant during the operation of the unit, resulting in less oil or lack of oil in the compressor, resulting in reduced reliability of the compressor. The unit is equipped with an oil separator, which can return the refrigerated oil discharged with the exhaust to the suction port of the compressor through the capillary tube, effectively ensuring the oil return reliability of the refrigeration system and improving the service life of the compressor. [0003] However, the oil return capillary connects the suction port and the discharge port of the compressor. During high-frequency operation, the refrigerant on the high-pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00F25B49/02
CPCF25B31/004F25B49/02F25B2600/25F25B2700/171
Inventor 杨虹卫广穹李金奎邹温锋李庆刘幸
Owner GREE ELECTRIC APPLIANCES INC
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