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Air conditioner based on pipeline blocking self-diagnosis method

An air conditioner and self-diagnosis technology, applied in heating mode, space heating and ventilation, and control input involving air characteristics, etc., can solve the blockage of refrigeration working fluid pipeline system, the inability of refrigerant to circulate, and the inability to manually identify the air conditioning system Whether it is normal or not, to achieve the effect of low cost and avoid damage to core components

Inactive Publication Date: 2016-05-18
青岛工学院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Others in the refrigeration system, such as high-pressure switches and low-pressure switches, which are welded together, may be inserted too deep and cause pipeline blockage
In addition, during installation, it often happens that image 3 When the shut-off valve 9 of the indoor unit or outdoor unit in the air conditioner is not opened, the air conditioner is powered on and started to run. At this time, because the shut-off valve 9 is closed, the refrigerant cannot circulate and the pipeline is blocked.
When the ambient temperature is low, this kind of refrigerant pipeline system blockage occurs, and it is impossible to artificially distinguish whether the air conditioning system is normal according to the routine installation and trial operation
Therefore, it is necessary to rely on the automatic judgment of the control system, otherwise, if the pipeline system is blocked, the air conditioner will continue to stop at high pressure or low pressure or the compressor will be overheated, and the long-term operation with faults will eventually cause damage to the compressor

Method used

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  • Air conditioner based on pipeline blocking self-diagnosis method
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Embodiment Construction

[0019] Below, the substantive features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.

[0020] 1. See air conditioning process image 3 , Figure 6 , The air conditioner is mainly composed of indoor unit 3, outdoor unit 4 and on-site installation with on-line pipes. The indoor unit 3 is mainly composed of a maintenance valve 4, a pipeline 5, a compressor 6, an indoor ambient temperature sensor 7, an evaporator 8, an indoor fan 9, an indoor coil sensor 10, a main controller 11, a throttling component 12 and a shut-off valve 13 composition. Outdoor unit is made up of outdoor fan 15, condenser 16 and stop valve 13.

[0021] When the air conditioner is working, the internal refrigerant comes out of the compressor 6, passes through the pipeline 5 and the stop valve 13, enters the condenser 16, then passes through the stop valve 13 and the throttling part 12, enters t...

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Abstract

The invention discloses an air conditioner based on a pipeline blocking self-diagnosis method. Existing hardware facilities, such as an indoor environment temperature sensor and an indoor coil pipe temperature sensor, of an air conditioner are mainly utilized for collecting, analyzing and processing data by adding control logic. According to the air conditioner, the aims that in the first-time power-on trial run process after installation of the air conditioner, pipeline blocking faults generated by product manufacturing or pipeline blocking faults generated by installation are automatically eliminated in advance, and damage of long-time run with the faults to a compressor and other core valuable components is avoided are mainly achieved. The method has the beneficial effects of being simple, reliable, low in cost and easy to popularize.

Description

technical field [0001] The invention belongs to the technical field of control in air-conditioning and refrigeration engineering, and is mainly applicable to equipment-cooling air-conditioners, especially split-type air-conditioners in which a compressor is installed in an indoor unit. Background technique [0002] Since the indoor ambient temperature is relatively stable, in order to improve the reliability of the air conditioner, the compressor is designed in the indoor unit. As a result, during the production of this type of indoor unit, the standard machine cannot be connected to the ordinary production line, and the compressor is turned on for trial operation. In order to check whether the air conditioner is normal. [0003] For air conditioners with compressors in the room, if the compressor is turned on for trial operation during production, the refrigerant cannot be recovered, so it needs to be re-evacuated and refilled with refrigerant. Only functional checks are c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F2110/10F24F11/30F24F11/70F24F2110/00F24F2140/20
Inventor 高云霞张梅风张丽
Owner 青岛工学院
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