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Air conditioning system

A technology for air conditioning systems and compressors, which is applied in heating and ventilation control systems, heating and ventilation safety systems, space heating and ventilation, etc., and can solve problems such as burning of compressor stator coils, deterioration of lubricating oil, and demagnetization of compressor rotors. , to avoid the effect of rotor demagnetization

Active Publication Date: 2020-08-14
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the prior art that the use of compressor coils to electromagnetically heat the lubricating oil easily leads to demagnetization of the compressor rotor due to excessive heating temperature, burning of the compressor stator coils, and deterioration of the lubricating oil, the present invention provides an air conditioning system, which passes the detection The temperature rise of the compressor coil provides thermal protection for the compressor coil, avoiding a series of problems caused by excessive heating temperature

Method used

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Examples

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Embodiment 1

[0042] The air conditioning system in this application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle consists of a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to air that has been conditioned and heat exchanged.

[0043] The compressor compresses refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0044] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion...

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Abstract

The invention discloses an air conditioning system. The air conditioning system comprises a compressor and a main control board, wherein the compressor is provided with a compressor coil; and the maincontrol board is configured to judge whether compressor coil heating is started or not, if so, the temperature rise delta T of the compressor coil during initial heating and after the heating time tis met is acquired, and a thermal protection step is executed, specifically, whether compressor coil heating is stopped or not is judged according to the temperature rise delta T. According to the airconditioning system, the compressor is subjected to thermal protection by acquiring the temperature rise of the compressor coil, and thus a series of problems including rotor demagnetization, compressor stator coil burnout, lubricating oil deterioration and the like caused by overheating of the compressor coil are avoided.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to an air conditioning system. Background technique [0002] In a conventional air conditioning system, due to the mutual solubility of lubricating oil and refrigerant, if the outdoor unit is turned off for a long time, a large amount of refrigerant will be deposited in the crankcase of the compressor, resulting in a decrease in the concentration of lubricating oil, which cannot meet the lubrication needs of the compressor. If the air conditioning system is connected to the power supply and started at this time, the oil tank of the compressor needs to be heated to ensure that the temperature of the oil tank rises to a safe range, and the viscosity and concentration of the lubricating oil meet the requirements of the compressor before the outdoor unit can be turned on. In the prior art, an electric heating belt is usually used to heat the oil sump of the compressor. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/86F24F11/873F24F11/88F24F110/10F24F140/20F24F140/50
CPCF24F11/61F24F11/64F24F11/86F24F11/873F24F11/88F24F2110/10F24F2140/20F24F2140/50
Inventor 刘洋李希志孙铁军
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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