Refrigerant pump control method, device and air conditioning unit

A control method and refrigerant pump technology, which is applied in the field of devices, air conditioning units, and refrigerant pump control methods, can solve problems such as adjusting the operation of refrigerant pump supply flow, achieve precise control methods, enhance reliability, and improve overall energy efficiency. Effect

Active Publication Date: 2021-01-22
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a refrigerant pump control method, device and air conditioning unit to at least solve the problem in the prior art that the liquid supply flow rate of the refrigerant pump cannot be adjusted according to the operating conditions of the unit

Method used

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  • Refrigerant pump control method, device and air conditioning unit
  • Refrigerant pump control method, device and air conditioning unit
  • Refrigerant pump control method, device and air conditioning unit

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In the preferred embodiment 1 of the present invention, a refrigerant pump control method is provided, which can be directly applied to various refrigerant pumps, specifically, figure 1 An alternative flowchart showing the method, such as figure 1 As shown, the method includes the following steps S102-S106:

[0026] S102: Detect the operating status of the unit, which at least includes operating conditions and operating loads;

[0027] S104: Determine the optimum liquid supply flow rate of the refrigerant pump according to the operating state of the unit;

[0028] S106: Control the opening of the refrigerant pump according to the optimal liquid supply flow.

[0029] In the above embodiment, the operating state of the unit is firstly detected. The operating state of the unit includes at least the operating condition and operating load, and then the optimal liquid supply flow rate of the refrigerant pump is determined according to the operating state of the unit to cont...

Embodiment 2

[0052] Based on the refrigerant pump control method provided in the above-mentioned embodiment 1, a refrigerant pump control device is also provided in the preferred embodiment 2 of the present invention, specifically, Figure 5 shows an optional structural block diagram of the device, such as Figure 5 As shown, the device includes:

[0053] The detection module 502 is used to detect the operating status of the unit, and the operating status of the unit includes at least operating conditions and operating loads;

[0054] The liquid supply flow determination module 504 is connected to the detection module 502, and is used to determine the optimum liquid supply flow of the refrigerant pump according to the operating state of the unit;

[0055] The opening degree determination module 506 is connected with the liquid supply flow determination module 504, and is used for controlling the opening degree of the refrigerant pump according to the optimum liquid supply flow rate.

[0...

Embodiment 3

[0065] Based on the refrigerant pump control device provided in the above-mentioned embodiment 2, in preferred embodiment 3 of the present invention, an air-conditioning unit is also provided, including the above-mentioned refrigerant pump control device.

[0066] In the above embodiment, the operating state of the unit is firstly detected. The operating state of the unit includes at least the operating condition and operating load, and then the optimal liquid supply flow rate of the refrigerant pump is determined according to the operating state of the unit to control the opening of the refrigerant pump. For different working conditions and different loads, the corresponding optimal liquid supply flow rate is used as the control target. The control method is accurate, stable and reliable, which can significantly improve the overall energy efficiency of the unit and enhance the reliability of the unit operation.

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Abstract

The invention discloses a refrigerant pump control method and device and an air conditioning unit. The method comprises the steps that operating states of the unit are detected, wherein the operatingstates of the unit at least comprise operating conditions and an operating load; the optimal liquid supply flow of a refrigerant pump is determined according to the operating states of the unit; and the opening degree of the refrigerant pump is controlled according to the optimal liquid supply flow. The problem that the liquid supply flow of a condensation pump in the prior art cannot be adjustedaccording to the operation conditions of the unit is solved, the optimal refrigerant flow can be provided for a compressor, the comprehensive energy efficiency of the unit is remarkably improved, andthe operation reliability of the unit is enhanced.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method and device for controlling a refrigerant pump and an air conditioning unit. Background technique [0002] The bearing is a key part of the centrifugal compressor. The function of the bearing is to bear the weight of the rotor and its rotation during work. Due to the long-term friction phenomenon in the bearing, lubrication is of great significance to the bearing. The lubricant in the bearing can not only reduce frictional resistance and wear, but also dissipate heat and cool down, reduce contact stress, absorb vibration, and prevent corrosion. [0003] Oil-lubricated bearings are widely used because of their low cost, simple structure and high reliability. However, during the operation of the compressor, the lubricating oil will leak into the refrigeration system and mix with the refrigerant, which will affect the heat transfer performance of the refrigerant. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/70F25B49/02
CPCF25B49/02F25B2600/05F24F11/70
Inventor 卓明胜张治平刘华周宇
Owner GREE ELECTRIC APPLIANCES INC
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