Reversal detection method and reversal detection device of air conditioner compressor

A technology of an air conditioner compressor and a detection method, which is applied in the direction of compressors, compressors with reversible cycles, and pump testing, etc., can solve the problem that the air conditioner cannot operate reliably, safely and stably, the anti-reverse design cannot be applied to the compressor, and the air conditioner cannot be used. Refrigeration and other issues to ensure safe and stable operation, ensure safety and stability, and reduce misjudgment

Active Publication Date: 2015-01-14
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some compressor manufacturers have special compressor anti-reverse design, but the anti-reverse design can not be applied to all compressors, there are certain limitations
If the compressor in the air conditioning system does not have an anti-reverse design, once the compressor is reversed, the air conditioner will not be able to cool. Also, when the compressor is reversed,

Method used

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  • Reversal detection method and reversal detection device of air conditioner compressor
  • Reversal detection method and reversal detection device of air conditioner compressor
  • Reversal detection method and reversal detection device of air conditioner compressor

Examples

Experimental program
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Embodiment 1

[0044] The compressor is the heart of the air-conditioning system, and it plays the role of compressing and driving the refrigerant in the air-conditioning refrigerant circuit. The working circuit of the air conditioner compressor is divided into evaporation zone (low pressure zone) and condensation zone (high pressure zone). In the refrigeration circuit, the indoor unit and outdoor unit of the air conditioner belong to the low pressure or high pressure area respectively. The air conditioner compressor is generally installed in the outdoor unit.

[0045]The working principle of the refrigeration system of the air conditioner is: the air conditioner compressor extracts the refrigerant from the low-pressure area, compresses it, and then sends it to the high-pressure area for condensation, and then emits heat into the air through the cooling fins in the outdoor heat exchanger, and the refrigerant is also released from the air. The gaseous state becomes liquid. The refrigerant t...

Embodiment 2

[0068] The air-conditioning system has different working modes of heating, cooling, dehumidification, and defrosting. The compressor of the air-conditioning system can run in reverse only in the heating and non-defrosting mode, cooling mode or dehumidification mode. Therefore, in the air-conditioning system Before the main board detects whether the air conditioner compressor is running in reverse, it also needs to determine whether the air conditioner is running in the heating and non-defrosting mode, cooling mode or dehumidification mode. Determining whether the air conditioner is running in heating and non-defrosting mode, cooling mode or dehumidification mode includes:

[0069] S301. After the air conditioner is turned on, determine whether the air conditioner is operating in the heating mode, if yes, execute S302; otherwise, determine whether the air conditioner is operating in the cooling mode or the dehumidification mode, and if so, determine whether the air conditioner i...

Embodiment 3

[0099] see Figure 4 , an air conditioner compressor reverse detection device, comprising:

[0100] A determination unit 100, configured to determine whether the air conditioner is operating in a heating and non-defrosting mode, a cooling mode or a dehumidification mode;

[0101] Acquisition unit 101, used to collect compressor discharge temperature T t and air conditioner operating current I t , t represents the current moment;

[0102] Calculation unit 102, used to calculate the exhaust gas temperature difference ΔT=T t-第一预设时间 -T t , where T t-第一预设时间 Indicates the exhaust gas temperature before the first preset time at the current moment, T t Indicates the exhaust temperature at the current moment;

[0103] The first judging unit 103 is used to judge whether the exhaust gas temperature difference ΔT satisfies ΔT≥ΔT 预设 , if yes, sending an execution signal to the second judging unit; otherwise, sending the execution signal to the collection unit after waiting for a se...

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Abstract

A reverse detection method and device of an air conditioner compressor. The method comprises: determining that an air conditioner runs in a heating non-defrosting mode, a refrigeration mode, or a dehumidifying mode; collecting compressor air discharging temperature (Tt) and an air conditioner running current (It); calculating an air discharging temperature difference (ΔΤ); and determining whether the air discharging temperature difference (ΔΤ) is higher then a preset temperature difference and whether the air conditioner running current (It) is within a preset current range, and if yes, determining that the compressor runs in reverse. Also provided is a reverse detection device of an air conditioner compressor. The method and the device ensure safe and stable running of a compressor, and therefore ensure safe and stable running of an air conditioning system.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a method and device for detecting reverse rotation of an air conditioner compressor. Background technique [0002] With the large-scale use of various electrical appliances, the phenomenon of "electricity shortage" in cities is becoming more and more serious. This phenomenon of "electricity shortage" will cause the voltage of urban power grids to be pulled down rapidly during peak periods of electricity consumption. As the core component of the air conditioner, the compressor can operate safely and stably directly determines whether the air conditioner can operate reliably, safely and stably. When the voltage of the compressor is relatively low, the torque provided by the motor of the compressor is insufficient, which may easily lead to the reverse rotation of the compressor during operation. [0003] At present, the protection measures for the compressor in...

Claims

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Application Information

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IPC IPC(8): F04B51/00F04B49/10
CPCF04C28/28F25B13/00
Inventor 郭晓峰曹勇
Owner GREE ELECTRIC APPLIANCES INC
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