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Defrosting control method and device of air conditioner

A control method and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems such as inability to accurately determine the best defrosting time, wrong defrosting, etc., and achieve improved defrosting Efficiency, reduction of misjudgment, and accurate defrosting judgment

Active Publication Date: 2015-11-18
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a defrosting control method and device for an air conditioner, aiming to solve the technical problem in the prior art that the best time for defrosting cannot be accurately determined, resulting in wrong defrosting

Method used

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  • Defrosting control method and device of air conditioner
  • Defrosting control method and device of air conditioner
  • Defrosting control method and device of air conditioner

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no. 1 example

[0055] refer to figure 1 , figure 1 It is a schematic flow chart of the first embodiment of the defrosting control method of the air conditioner of the present invention, and the method includes:

[0056] S10. Control the compressor of the air conditioner to start to perform heating operation.

[0057] In this step, the air conditioner may be restarted to perform heating after the air conditioner has just turned on the heating mode or the compressor of the air conditioner has stopped for a period of time.

[0058] When the air conditioner is in heating mode, it controls the operation of the compressor to compress the low-temperature and low-pressure refrigerant into high-temperature and high-pressure refrigerant vapor, and then flows the high-temperature and high-pressure refrigerant vapor to the heat exchanger of the indoor unit to release heat, thereby realizing heating.

[0059] S20. Obtain the effective value of the refrigerant flow rate in the coil of the outdoor unit, ...

no. 1 example

[0125] Based on the first embodiment of the above-mentioned defrosting control device for an air conditioner, the device further includes a third acquisition module 60, configured to acquire the running time of the air conditioner in the defrosting mode;

[0126] The defrosting control module 50 is also used to control the air conditioner to exit the defrosting mode when the running time of the air conditioner in the defrosting mode reaches the defrosting set time.

[0127] When the air conditioner is running in the defrosting mode, the third obtaining module 60 records the running time of the air conditioner, so as to obtain the running time t of the air conditioner in the defrosting mode.

[0128] The defrosting set time T can be set as required. In one embodiment, the defrosting set time T is two minutes, and when the running time t of the air conditioner in the defrosting mode reaches two minutes, the defrosting control module 50 controls the air conditioner to exit the de...

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Abstract

The invention discloses a defrosting control method and device of an air conditioner. The method comprises the steps that a compressor of the air conditioner is controlled to be started to conduct heating operation; after the compressor operates for a first preset period of time, a flow rate effective value V0 of refrigerating fluid in an outdoor unit coil pipe, an indoor environment temperature effective value Tn0, an outdoor environment temperature effective value Tw0 and an effective value Tp0 of an indoor unit coil pipe are obtained; a first flow rate current value Vt of the refrigerating fluid in the outdoor unit coil pipe, an indoor environment temperature current value Tnt, an outdoor environment temperature current value Twt and a current temperature value Tpt of the indoor unit coil pipe are obtained; according to the V0, the Tn0, the Tw0, the Tp0 and the Vt, the Tnt, the Twt and the Tpt, whether the air conditioner meets a defrosting condition is determined; and if the air conditioner meets the defrosting condition, the air conditioner is controlled to be in a defrosting mode to conduct defrosting. By means of the method and the device, mistaken judgment of defrosting can be reduced, and defrosting efficiency is improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a defrosting control method and device for an air conditioner. Background technique [0002] When the air conditioning system is heating, the system sends heat from the outside to the room, and the heat exchanger of the outdoor unit acts as an evaporator. If the temperature of the outdoor air is low and the humidity is high, the water vapor in the air will flow on the surface of the outdoor heat exchanger. Condensed and frosted. The frosting of the outdoor heat exchanger increases the heat transfer resistance between the surface of the outdoor heat exchanger and the air, increases the flow resistance of the air flow through the outdoor heat exchanger, reduces the air flow through the outdoor heat exchanger, and improves the heat transfer performance. The efficiency is significantly reduced, which not only affects the indoor comfort, but also causes a decrease in system energy eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/41
Inventor 黄云马攀李凤嘉叶岳印石滋基
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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