Defrosting device for saloon car air-condition evaporator

A technology for evaporators and air conditioners, which is used in vehicle parts, transportation and packaging, air treatment equipment, etc., and can solve the problems of frequent compressor starts and great harm.

Inactive Publication Date: 2004-03-17
NANJING XIEZHONG AUTO AIRCONDITIONER CO CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

After the compressor stops, the surface temperature of the evaporator rises, and the frost gradually melts; when the surface temperature of the evaporator is higher than a certain temperature value (generally 4°C), the electromagnetic clutch connects the compressor and starts cooling, so that the compressor is started frequently, On the one hand, it has a gr

Method used

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  • Defrosting device for saloon car air-condition evaporator
  • Defrosting device for saloon car air-condition evaporator

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Embodiment Construction

[0008] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0009] Such as figure 1 As shown, the present invention mainly includes compressor 1, condenser 2, liquid receiver 3, electronic expansion valve 4, evaporator fan 5, evaporator 6, evaporator outlet temperature sensor 7, evaporator inlet temperature sensor 8, evaporator A surface temperature sensor 9 , an A / D converter 10 , a program memory 11 , a drive circuit 12 for an electronic expansion valve, and a microprocessor 13 . The outlet of compressor 1 is connected to the inlet of condenser 2, the outlet of condenser 2 is connected to the inlet of liquid accumulator 3, the outlet of liquid accumulator 3 is connected to the inlet of electronic expansion valve 4, and the outlet of electronic expansion valve 4 is connected to evaporator The inlet of 6, the outlet of evaporator 6 is connected to the inlet of compressor 1. The temperature senso...

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Abstract

The car air conditioner evaporator defroster includes compressor, condensator, liquid storage, electronic expanding valve, evaporator blower, evaporator, evaporator outlet temperature sensor, evaporator inlet temperature sensor, A/D converter, program memory, drive circuit for electronic expanding valve and microprocessor. The throttle mechanism adopts electronic expansion valve. When the evaporator has surface temperature lower than the set temperature, the microprocessor will send command to increase the number of pulse to the electronic expanding valve for increased opening, raised evaporation pressure and raised evaporator surface temperature and the frost will thaw without stopping the air conditioner. The present invention can avoid the frequent start of the compressor, and this reduces power consumption, raises system stability and facilitates the intelligent control of the air conditioner.

Description

technical field [0001] The invention relates to a defrosting device for an evaporator of a car air conditioner, in particular to a defrosting device that uses an electronic expansion valve as a throttling mechanism, controls the surface temperature of the evaporator by controlling the opening of the electronic expansion valve, and realizes non-stop defrosting of the evaporator defrosting device. The utility model belongs to the technical field of car air conditioners. technical background [0002] Car air-conditioning system is mainly composed of compressor, condenser, evaporator, liquid receiver and throttling mechanism and other components. Common throttling components are thermal expansion valves and throttle spools, but both thermal expansion valves and spools share limitations. That is, once the structure is determined, its control target parameters and control laws have been determined and cannot be changed. No matter what the object is, they all work in the same wa...

Claims

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Application Information

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IPC IPC(8): B60H1/32F25B47/02
Inventor 李绪泉陈江平陈芝久
Owner NANJING XIEZHONG AUTO AIRCONDITIONER CO CO LTD
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