Liquid accumulation prevention control method and device, compressor and air conditioning equipment

A control method and control device technology, applied to compressors, refrigerators, control systems, etc., can solve problems such as the inability to completely remove liquid accumulation inside the compressor, achieve the effects of increasing temperature, improving reliability, and avoiding liquid-filled startup

Pending Publication Date: 2022-02-25
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a liquid accumulation prevention control method, device, compressor, and air-conditioning equipment to solve the problem in the prior art that heating the compressor with an external auxiliary heating device cannot completely remove the liquid accumulation inside the compressor

Method used

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  • Liquid accumulation prevention control method and device, compressor and air conditioning equipment
  • Liquid accumulation prevention control method and device, compressor and air conditioning equipment
  • Liquid accumulation prevention control method and device, compressor and air conditioning equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0049] This embodiment provides a method of controlling the control method for the compressor, figure 1 For the structural diagram of the compressor according to an embodiment of the present invention, figure 1As shown, the compressor includes a rectifier module 1, inverter module 2, and motor 3, inverter module 2 including first inverse bridge, second inverse bridge, and three inverting bridges, wherein the first reverse The first upper bridge arm S1 and the first lower bridge arm S2, the first upper bridge arm S2, the first upper bridge arm S1 and the first lower bridge arm S2 are first phased in the first phase winding u, the second reverse The bridge includes the second phase winding V, third reverse of the line connecting motor 3 drawn between the second upper bridge S3 and the second lower bridge arm S4, the second upper bridge arm S4, the second upper bridge arm S3, and the second lower bridge arm S4. The third bridge arm S5 and the third lower bridge arm S6, the third uppe...

Embodiment 2

[0057] In this embodiment, another anti-volume liquid control method is provided. In order to implement the temperature of the motor, that is, the temperature of the cylinder block of the compressor is, including:

[0058] Control the inverter module input a pulse signal of the set frequency; the motor resistance value corresponding to the pulse signal of the set frequency is acquired, and then determine the temperature of the motor; wherein the motor resistance value varies with the frequency of the input pulse signal, and Preset the corresponding relationship between the temperature of the motor and the resistance value. The control inverter module inputs a pulse signal, including: controlling the target bridge arm in the inverter module to input the pulse signal; wherein the target bridge arm comprises at least two upper bridge arms and at least one lower bridge arm. If the inverter module inputs a pulse signal having a set frequency, the motor resistance value corresponding to...

Embodiment 3

[0083] This embodiment provides a contrast control device, applied to a compressor, the compressor chart above mentioned above. figure 1 As shown in, including the rectifier module 1, inverter module 2, and motor 3, Figure 4 For the structural diagram of the anti-gas solution control device according to an embodiment of the present invention, Figure 4 As shown, the apparatus includes:

[0084] Get module 10 for obtaining the temperature of the motor.

[0085] When the temperature of the motor can be achieved, the temperature of the motor, that is, the temperature of the motor, that is, the temperature of the compressor is determined according to the mechanical resistance value and the temperature of the motor, that is, the temperature of the compressor is determined according to the relationship between the motor resistance value and the temperature.

[0086] The control module 20 is configured to control the on-state of the bridge arm in the inverter module to heat the motor to h...

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PUM

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Abstract

The invention discloses a liquid accumulation prevention control method and device, a compressor and air conditioning equipment. The compressor comprises a rectification module, an inversion module and a motor which are connected in sequence, and the method comprises the steps that the temperature of a motor is obtained; and when the temperature of the motor is lower than a preset threshold value, the conduction state of a bridge arm in the inversion module is controlled, so that the motor is powered on and emits heat to heat a cylinder body of the compressor. According to the invention, due to the fact that the motor is arranged in the cylinder body of the compressor, accumulated liquid in the compressor can be removed before the compressor is started by electrifying and heating the motor, the compressor is prevented from being started with the liquid, and the reliability of the compressor is improved.

Description

Technical field [0001] The present invention relates to the field of air conditioning techniques, and in particular, there is a contained liquid control method, a device, a compressor, and an air conditioning device. Background technique [0002] When the air conditioning unit is running in a low temperature environment, it is easy to evaporate the refrigerant evaporation due to poor heat transfer, resulting in a low temperature liquid refrigerant to return to a gas-liquid separator and a compressor, affecting the reliability of the whole machine. Especially in some project installations, the situation will be more harsh when adding the refrigerant. In order to prevent compressor, the currently common method needs to be heated by an external auxiliary heating device, and heat is required to transmit the cold media inside the compressor by the housing of the compressor, which heats resistance during heat, and low efficiency. It is unable to avoid returning to the compressor to car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/62H02P27/08F25B31/02
CPCH02P29/62H02P27/08F25B31/02Y02B30/70
Inventor 陈万兴梅正茂段成杰
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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