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Controlling method of safety stop of air conditioner

A technology for safe shutdown and control methods, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc. Operation and the effect of ensuring safety

Inactive Publication Date: 2006-11-15
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the compressor starts up again, it will cause a large amount of liquid to be sucked in when starting up, which will damage the compressor and cannot guarantee the normal operation of the system.

Method used

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  • Controlling method of safety stop of air conditioner
  • Controlling method of safety stop of air conditioner
  • Controlling method of safety stop of air conditioner

Examples

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Embodiment Construction

[0031] In the following, specific embodiments are described in detail with the attached drawings, so that it is easier to understand the purpose, technical content, characteristics and effects of the present invention.

[0032] like Figure 1-3 As shown, a frequency conversion one drag multiple air conditioner of the present invention includes: a compressor 1, a condenser 2, a plurality of indoor units 6, a four-way valve 3, an exhaust temperature sensor 4, a low pressure sensor 5 , a plurality of electronic expansion valves 7, a computer control system for controlling the operation of the air conditioner, and a refrigerant pipeline 8.

[0033] When the air conditioner of the present invention receives the shutdown command of the indoor unit 10, the compressor 1 does not stop running immediately, but changes from high frequency to low frequency operation (the original low frequency operation is maintained).

[0034] In the cooling state, after the outdoor unit 10 receives the...

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PUM

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Abstract

The present invention relates to a control method of air conditioner safety shutdown. Said method includes the following steps: when the turn-off signal of indoor machine is received by outdoor machine, the compressor is in low-frequency operation, when it is used for refrigeration, the control system can forcedly close the electronic expansion valve of indoor machine, when it is used for heat production, the control system can forcedly close the electronic expansion valve of outdoor machine; then the cooling agent from electronic expansion valve to suction line of compressor can be discharged from exhaust hole by compressor; when the exhaust temperature of compressor is risen or low-pressure pressure is lowered to defined value, then control system can be used for controlling compressor and making it stop safety shutdown process of air conditioner. Said invention can utilize said control method to ensure normal operation of said system.

Description

technical field [0001] The invention relates to an air conditioner used for cooling or heating indoor air, in particular to a control method for safe shutdown of the air conditioner, which belongs to the technical field of air conditioners. Background technique [0002] An air conditioner is a device used to cool or heat indoor space. A general air conditioner includes a compressor, a condenser, an expansion assembly that decompresses the refrigerant into a low-temperature and low-pressure liquid, an evaporator, refrigerant piping, and a control system. There are many types of air conditioners, but most of them are frequency conversion air conditioners at present, and there are frequency conversion one-to-one or one-to-multiple air conditioners. The inverter air conditioner can change the compression capacity of the refrigerant at any time according to the cooling load or heating load in the room, so as to achieve the best cooling or heating efficiency of the air conditioner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 张晓兰毛守博禚百田卢大海王莉
Owner HAIER GRP CORP
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