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Protection method and device for air conditioner compressor

A compressor protection and protection device technology, applied in space heating and ventilation, control input involving air characteristics, space heating and ventilation control input, etc., can solve the problem of insufficient lubrication, affecting compressor performance and service life, and lubrication Problems such as insufficient oil

Active Publication Date: 2016-09-07
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a method and device for protecting the compressor of an air conditioner, aiming at solving the problem that when the existing air conditioner is started at low temperature, the compressor still starts and runs normally at normal temperature, a large amount of lubricating oil is spit out from the compressor, and the circulation The lubricating oil in the system cannot flow back to the compressor in time, resulting in insufficient lubricating oil and insufficient lubrication in the compressor, which affects the performance and service life of the compressor

Method used

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  • Protection method and device for air conditioner compressor
  • Protection method and device for air conditioner compressor
  • Protection method and device for air conditioner compressor

Examples

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example 1

[0090] The air conditioner starts the heating function, and obtains the outdoor temperature and the first target temperature through the temperature sensor. For example, the first target temperature is set to -7°C. When the acquired outdoor temperature is -9°C, the outdoor temperature is lower than the first target temperature. temperature, then control the air conditioner to enter the low temperature protection state of the compressor; obtain the compressor protection operation parameters corresponding to the outdoor temperature and the compressor protection operation time t, the compressor protection operation time t=k*V+b+d, select k as 3. The basic correction time d is 420 seconds. According to Table 1, the compressor protection running time t=3*10.8+30+420=482.4 seconds ≈ 483 seconds (rounded up), and the compressor running frequency is 45~55Hz , the opening of the electronic expansion valve is 180-220 steps, within the protection running time of the compressor t=483 secon...

example 2

[0092] The air conditioner starts the heating function, and obtains the outdoor temperature and the first target temperature through the temperature sensor. For example, the first target temperature is set to -7°C. When the acquired outdoor temperature is -9°C, the outdoor temperature is lower than the first target temperature. temperature, then control the air conditioner to enter the low temperature protection state of the compressor; obtain the compressor protection operation parameters corresponding to the outdoor temperature and the compressor protection operation time t, the compressor protection operation time t=k*V+b+d, select k as 3. The basic correction time d is 420 seconds. According to Table 1, the compressor protection running time t=3*10.8+30+420=482.4 seconds ≈ 483 seconds (rounded up), and the compressor running frequency is 45~55Hz , the opening of the electronic expansion valve is 180-220 steps, within the protection running time of the compressor t=483 secon...

example 3

[0095] The air conditioner starts the heating function, and obtains the outdoor temperature and the first target temperature through the temperature sensor. For example, the first target temperature is set to -7°C. When the acquired outdoor temperature is -9°C, the outdoor temperature is lower than the first target temperature. temperature, then control the air conditioner to enter the low temperature protection state of the compressor; obtain the compressor protection operation parameters corresponding to the outdoor temperature and the compressor protection operation time t, the compressor protection operation time t=k*V+b+d, select k as 3. The basic correction time d is 420 seconds. According to Table 1, the compressor protection running time t=3*10.8+30+420=482.4 seconds ≈ 483 seconds (rounded up), and the compressor running frequency is 45~55Hz , the opening of the electronic expansion valve is 180-220 steps, within the protection running time of the compressor t=483 secon...

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Abstract

The invention discloses a protection method for an air conditioner compressor. The protection method for the air conditioner compressor comprises the following steps that the outdoor temperature and the first target temperature are obtained; when the outdoor temperature is lower than the first target temperature, an air conditioner is controlled to be in a compressor low-temperature protection state; compressor protection operating parameters and the compressor protection operating time which correspond to the outdoor temperature are determined; and the operating frequency of the compressor and / or the open degree of an electronic expansion valve is adjusted according to the protection operating parameters within the compressor protection operating time. The invention further discloses a protection device for the air conditioner compressor. According to the protection method and device for the air conditioner compressor, in the low-temperature state, the operating state of the compressor is controlled according to the outdoor temperature situation so that the effect that the amount of lubricating oil discharged by the compressor and the amount of lubricating oil sucked by the compressor are basically equal can be ensured, and thus the effect that the compressor has enough lubricating oil is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner compressor protection method and device. Background technique [0002] In daily life, the air conditioner is a kind of electrical appliance that people often use, and it can adjust the indoor temperature and humidity. In simple terms, the process of air conditioner to regulate heating is: the compressor compresses the gaseous refrigerant at normal temperature and pressure into a high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant circulates to the heat exchanger (in this case, the condenser) to release heat and liquefy The room temperature and high pressure liquid refrigerant is heated, and the normal temperature and high pressure liquid refrigerant evaporates and gasifies into a normal temperature and pressure gas refrigerant and then returns to the compressor for continuous heating in...

Claims

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Application Information

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IPC IPC(8): F25B49/02F24F11/00
CPCF24F11/30F24F11/70F24F2110/10F25B49/022F24F2110/12F25B2600/2513F25B2700/2106F25B2700/21152F25B2600/02F25B2600/025
Inventor 林森荣张福华李凤嘉赖福远黄建斌何杜兵
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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