Control method of frequency conversion compressor of heat pump clothes dryer and heat pump clothes dryer

A frequency conversion compressor and control method technology, which is applied in the control field of heat pump dryers and frequency conversion compressors of heat pump dryers, can solve the problems of high failure rate of compressor motors and reduced service life, etc., so as to reduce energy consumption and increase Effect, the effect of reducing the possibility of frosting

Active Publication Date: 2018-03-30
QINGDAO HAIER WASHING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-load work of the refrigeration system leads to a high failure rate of the compressor motor and reduces the service life

Method used

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  • Control method of frequency conversion compressor of heat pump clothes dryer and heat pump clothes dryer
  • Control method of frequency conversion compressor of heat pump clothes dryer and heat pump clothes dryer
  • Control method of frequency conversion compressor of heat pump clothes dryer and heat pump clothes dryer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as image 3 As shown in , it is a schematic diagram of the drying workflow of the heat pump clothes dryer described in this embodiment. During the drying process, the operating frequency of the frequency conversion compressor is controlled in stages, including compressor frequency increase control, compressor frequency conversion control, fan control and drying end judgment from the beginning to the end. conditions, then repeat the process of frequency conversion control of the compressor, fan control, and the determination of the end of drying in a cycle. Among them, the frequency increase control of the compressor refers to controlling the frequency conversion compressor to increase to the final frequency H0 and running stably; the frequency conversion control of the compressor refers to the corresponding Detect the temperature and adjust the operating frequency of the variable frequency compressor in stages.

[0041] The above detection temperature refers to th...

Embodiment 2

[0044] Such as Figure 4 As shown, in this embodiment, on the basis of the first embodiment above, the following control mode is added between the compressor frequency up control and the frequency conversion control to detect whether the input current of the frequency conversion compressor or the exhaust temperature of the compressor or the temperature of the condenser reaches the upper limit, If the upper limit condition is reached, it will directly enter the frequency conversion control of the compressor; if the upper limit condition is not reached, the frequency conversion compressor will be controlled to increase the frequency to control the final frequency to run for a set time such as t=30min or to detect the temperature such as the temperature of the condenser or the output cylinder temperature. After setting the value, enter the frequency conversion control of the compressor. The condition of the upper limit refers to the maximum current allowed by the compressor, or t...

Embodiment 3

[0046] Such as Figure 5 As shown, in this embodiment, on the basis of the first embodiment, an evaporator anti-frost control stage is added between the compressor frequency up control and the frequency conversion control. The evaporator anti-frost control stage is to control the rapid rise of the air temperature entering the evaporator; since frost is usually related to temperature and humidity, when it is detected that the evaporator is about to frost, the operating frequency of the inverter compressor is controlled to increase rapidly so that the cylinder Underwear heats up quickly and dries to reduce humidity and the temperature of the air passing through the evaporator rises quickly.

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Abstract

The invention discloses a control method of an inverter compressor of a heat pump clothing dryer and the heat pump clothing dryer. The heat pump clothing dryer comprises a heat pump clothing drying system comprising a heat pump module comprising the inverter compressor, a condenser, a throttling device and an evaporator, or further comprises a fan used for decreasing the temperature of the surface of the inverter compressor to adjust the load. In the clothing drying process, the operating frequency of the inverter compressor is controlled segmentally; the method includes compressor frequency rising control, compressor frequency inverting control and clothing drying finish determination. If a set clothing drying condition is not achieved after detection, the processes of compressor frequency inverting control and clothing drying finish determination are repeated circularly. The compressor frequency rising control means controlling the inverter compressor to rise the frequency to an ultimate frequency and operate stably; the compressor frequency inverting control means adjusting the operating frequency of the inverter compressor segmentally corresponding to the detection temperature. the control method and the heat pump clothing method have the advantages that drying efficiency is improved, operating efficiency of the inverter compressor is optimized, and service life of the inverter compressor is prolonged.

Description

technical field [0001] The invention relates to a clothes drying device and a clothes drying control method, in particular to a control method of a frequency conversion compressor of a heat pump clothes dryer and the heat pump clothes dryer by controlling the clothes drying process in stages to reduce energy consumption. Background technique [0002] The following air circulation channel is arranged in the existing heat pump type clothes drying device: the heated air heated by the condenser in the heat pump cycle system is sent into the drying room containing the clothes, and the moist air which has taken moisture from the clothes is It is sent back to the evaporator for dehumidification, and the dehumidified air is heated by the condenser again and sent to the drying chamber. [0003] In the drying system of heat pump clothes dryer, the pressure that the compressor system can withstand is the saturation pressure corresponding to the temperature of the refrigerant correspond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F58/28
CPCD06F58/30D06F58/38D06F58/50D06F2103/08
Inventor 许升宋华诚田书君单世强
Owner QINGDAO HAIER WASHING MASCH CO LTD
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