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Anti-freezing method of air conditioner

A technology for air conditioning and outlet water temperature, applied in the field of air conditioning, can solve problems such as difficult air conditioning, and achieve the effect of improving antifreeze performance

Active Publication Date: 2007-06-13
SHENZHEN MCQUAY AIR CONDITIONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air conditioner using the above-mentioned method can only have the antifreeze function under normal circumstances. In some relatively cold areas or when the temperature drops suddenly, the air conditioner using the above-mentioned technology is difficult to deal with

Method used

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Embodiment Construction

[0019] The present invention is further described below in conjunction with accompanying drawing:

[0020] As shown in Figure 2, it is a schematic diagram of a central air-conditioning refrigeration system. Among them, 1 is a compressor, 2 is a condenser, 3 is a dry filter, 4 is a throttling device, 5 is a plate heat exchanger, and 6 is a unit controller.

[0021] The operation process of the air-conditioning unit is as follows: after the compressor 1 compresses the refrigerant, it is discharged from the compressor 1, so that the refrigerant flows into the condenser 2, and then flows into the dry filter 3 through the pipeline, and the dry filter 3 After drying and filtering, it enters the throttle valve 4, passes through the throttle valve 4, and then enters the plate heat exchanger 5 for heat exchange with water, and then flows back to the compressor 1 for compression, and returns to the next in the refrigeration cycle. Two water pipes are respectively arranged in the plate...

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Abstract

The invention relates to a method to improve the antifreeze ability for air condition. It includes the following steps: minimum water flow would be controlled by a flow controller at water outlet, setting an antifreeze value, when water temperature lowering than the value, the set would stop running and output alarm. If the water temperature at water intake is lower than a set temperature value, and the temperature difference at outlet and intake exceeding a set value, and lasting for a time span, it would be judged as not enough water flow. The machine would be stopped and output alarm.

Description

【Technical field】 [0001] The invention belongs to the field of air conditioners, and in particular designs a method for improving the antifreeze ability of the air conditioner by changing the design logic of the air conditioner. 【Background technique】 [0002] With the development of technology and the progress of society, air conditioners, as a household appliance, have been widely used in homes and offices. Central air-conditioning generally uses water as the medium for secondary heat exchange. Appropriate water flow is a necessary guarantee for the reliable operation of the central air-conditioning host. Improper water flow may cause freezing of the evaporator of the chiller, high condensation pressure, and "biting" of the compressor. ” and other failures, so the appropriate water flow detection method and detection components are to ensure that the unit only works when the system water flow is greater than the allowable minimum water flow, so as to avoid the failure of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/04F24F11/00
Inventor 李燕雷泽华
Owner SHENZHEN MCQUAY AIR CONDITIONING
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