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Defrosting method for air conditioner

A technology for air conditioners and indoor units, applied in the direction of heating, space heating and ventilation, damage protection, etc., to achieve the effect of shortening defrosting time, reducing ratio, and increasing operating time

Active Publication Date: 2011-04-20
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing defrosting mode does not fully consider the influence of the above situation, so that the accuracy of the method of determining the reference temperature according to the running time is greatly reduced

Method used

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  • Defrosting method for air conditioner
  • Defrosting method for air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: if figure 1 The specific process of the shown air conditioner defrosting method flow chart is as follows:

[0033] Step S101: the process starts.

[0034] Step S102: Detect the coil temperature Ts of the indoor unit and determine the reference temperature Tc: In order to overcome the influence of anti-cold wind on indoor pipe temperature sampling, the indoor temperature and the temperature of the indoor unit coil of the air conditioner are sampled after the compressor runs for 20 minutes, and the sampling time is 1 min, and then calculate the indoor unit coil temperature correction amount caused by the wind speed change as ΔTi, the indoor temperature change correction amount ΔTm, and the indoor unit coil temperature change amount ΔTs according to the method of the present invention, and calculate ΔTc=ΔTs-ΔTm- ΔTi. If the value of ΔTc is less than 0.5°C for 8 consecutive times, take the average temperature of Ts-ΔTm-ΔTi of 8 times as the reference temp...

Embodiment 2

[0047] Embodiment 2: The process and principle of this embodiment are similar to those of Embodiment 1, except that the values ​​of the parameters are different. The specific process is as follows:

[0048] Step S201: the process starts.

[0049] Step S202: Detect the coil temperature Ts of the indoor unit, and determine the reference temperature Tc: In order to overcome the influence of anti-cold wind on indoor pipe temperature sampling, the indoor temperature and the temperature of the indoor unit coil of the air conditioner are sampled after the compressor runs for 25 minutes, and the sampling time is 2min, and then calculate the indoor unit coil temperature correction amount caused by the wind speed change as ΔTi, the indoor temperature change correction amount ΔTm, and the indoor unit coil temperature change amount ΔTs according to the method of the present invention, and calculate ΔTc=ΔTs-ΔTm- ΔTi. If the value of ΔTc is less than 0.5°C for 6 consecutive times, take th...

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Abstract

The invention discloses a defrosting method for an air conditioner, which comprises the following steps: firstly, using the average temperature which is a difference value of the acquired temperature of a coil pipe of an indoor unit, the indoor temperature change correction quantity and the temperature correction quantity of the coil pipe of the indoor unit caused by the wind speed change as the reference temperature of the coil pipe of the indoor unit; and secondly, according to the reference temperature, the temperature of the coil pipe of the indoor unit and the running time of a compressor, determining whether to enter a defrosting running mode of the air conditioner. The defrosting method can remarkably improve the low temperature heating of the air conditioner and the comfort in theheating running process, and improve the overall performance of the air conditioner.

Description

technical field [0001] The invention relates to an intelligent defrosting method for an air conditioner, belonging to the technical field of air conditioners. Background technique [0002] When the air conditioner is in heating operation, if the outdoor ambient temperature is below freezing point and the air contains a certain amount of humidity, it is easy to freeze and form frost on the surface of the heat exchanger of the outdoor unit. The existence of frost will affect the heating performance of the air conditioner. Therefore, During the heating process of the air conditioner, it needs to enter the defrosting mode for defrosting every once in a while. The defrosting method of the air conditioner greatly affects the heating performance and comfort of the air conditioner. It is one of the important indicators of the heating and cooling air conditioner, and it is also one of the difficulties. For fixed-frequency air conditioners, there are currently two types of defrostin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F25B47/02
Inventor 冯利峰
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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