Intelligent defrosting method for frequency-conversion air conditioner

Abstract

The invention provides an intelligent defrosting method for a frequency-conversion air conditioner. Whether the air conditioner enters a defrosting program or not is judged according to a series of comprehensive factors such as the ranges of the indoor coil temperature, the indoor environment temperature, the outdoor coil temperature and the outdoor environment temperature, differences of the corresponding temperatures and heating running duration and cumulative time, the defrosting exit condition is determined according to the factors such as the defrosting duration and the range of the outer machine coil temperature, and the technical problems that in the prior art, the defrosting condition is simply set, and consequently the phenomena that defrosting is wrongly conducted when frost does not exist, defrosting is frequently conducted when frost is thin, and defrosting is not conducted when frost is thick possibly happen, and the heating effect of the air conditioner is affected can be solved. According to the intelligent defrosting method for the frequency-conversion air conditioner, the intelligent degree of defrosting of the air conditioner can be improved, the effects that defrosting is conducted when frost exists, defrosting is not conducted when frost does not exist, defrosting begins when frosting reaches a certain degree, and defrosting of an outdoor unit is thorough and timely can be improved, the accurate defrosting efficiency of the air conditioner can be effectively improved, and the heating performance of the air conditioner is improved.

Description

technical field [0001] The invention belongs to the field of air conditioning control, in particular to an intelligent defrosting method for an inverter air conditioner. Background technique [0002] At present, traditional inverter air conditioners use outdoor coil temperature T 外盘 and the outdoor ambient temperature T 外环 To judge whether there is frost and defrost. For example, single use T 外盘 <-8°C is the condition for defrosting. When the outdoor temperature is lower than -8°C, it will inevitably cause the air conditioner to defrost regularly. [0003] Another example is the addition of T 外环 As a judgment condition, T 外环 -T 外盘 >9°C, this scheme is more reasonable than the previous simple scheme, because only when the effect of the frosted heat exchanger becomes worse will the T 外环 and T 外盘 In this way, the probability of frost-free defrosting can be greatly reduced. However, after the outdoor unit is frosted, it will 外环 The level of T 外环 -T 外盘 The diffe...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems in the prior art that the defrosting conditions of the air conditioner are simple to set, the defrosting of the air conditioner is...

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