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Clothes dryer control method

A control method and clothes dryer technology, which are applied in the field of clothes drying, can solve problems such as longer drying time and higher average power consumption, and achieve the effects of shortening drying time, saving energy consumption, and increasing drying temperature

Active Publication Date: 2014-10-29
QINGDAO HAIER WASHING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the same compressor speed is used for drying small-volume clothes, the average drying time per unit mass will be longer, and the average power consumption will be more

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 4 As shown, this embodiment is a schematic diagram of the compressor up-frequency control process described above. The compressor up-frequency control refers to step-by-step frequency up-conversion at a fixed speed-up, and after each stage of frequency-up ends, it takes a stable and fixed time to enter the next step. stage, until the final frequency, the final frequency is the set frequency, or the operating frequency when the condenser temperature / compressor discharge temperature / compressor input current reaches the upper limit; each stage must detect whether the compressor is running at this stage Condenser temperature / compressor discharge temperature / compressor input current upper limit corresponding to the frequency. After the variable frequency compressor is started, the operating frequency of the compressor gradually increases from low speed to the final frequency H0, instead of directly operating at the highest frequency. The frequency increase o...

Embodiment 2

[0046] In this embodiment, within the set drying time range, it is judged when the surface temperature of the condenser reaches the set temperature value, and the longer the time, the more clothes, or the change of the condenser surface temperature within the set time period, The smaller the change in the surface temperature of the condenser per unit time, the more clothes there are, and the higher the minimum operating frequency of the compressor is set; otherwise, the opposite is true. For example, if the surface temperature of the condenser changes less than 20°C within 30 minutes, it is considered that there are more clothes, and the minimum operating frequency H2 of the compressor is set to 35Hz; The minimum operating frequency H2 of the compressor is set to 30Hz.

Embodiment 3

[0048] Within the set drying time range, judge the time when the humidity of the clothes in the dryer barrel reaches the set humidity value. The longer the time, the more clothes, or the change of the humidity of the clothes within the set time period, and the humidity of the clothes per unit time The smaller the change, the more laundry, and the higher the minimum operating frequency of the compressor is set. For example, if the humidity value is greater than 1900 within 30 minutes, it is considered that there are more clothes, and the minimum operating frequency H2 of the compressor is set to 35Hz; H2 is set to 30Hz.

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Abstract

Disclosed is a control method for a laundry dryer. The laundry dryer is a heat-pump laundry dryer, and a compressor is a variable-frequency compressor. According to the amount of laundry, a minimum running frequency of the compressor is set, and the more the laundry is, the greater the set minimum running frequency is. Specifically, when laundry drying is started, the amount of laundry is detected, and according to the detected information, a minimum running frequency, corresponding to the information, of the compressor, is invoked, and a minimum running frequency of the compressor of the current laundry drying process is set. In the improved control method for a compressor in a heat-pump laundry dryer of the present invention, when there is a large amount of laundry, a set minimum running frequency of the compressor is increased, so as to increase the drying temperature inside the cylinder, shorten the drying duration, and eventually achieve a more desirable laundry drying effect; when there is a small amount of laundry, because the laundry is relatively loose, the moisture inside the laundry can easily evaporate, and through comprehensive comparison of the power consumption and drying efficiency of the compressor, a low minimum running frequency of the compressor can be set, thereby lowering energy consumption in comparison.

Description

technical field [0001] The invention relates to the field of clothes drying, in particular to a method for controlling a compressor of a heat pump clothes dryer, especially a method for controlling the frequency of a compressor of a clothes dryer according to the amount of clothes. 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 corresponding to 60-70°C. In the later stage of dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F58/28D06F58/38D06F58/48
CPCD06F58/38D06F2103/08D06F2103/02D06F2103/38D06F58/48D06F2103/04D06F2103/32D06F2103/50D06F2105/26D06F58/206D06F2101/04Y02B40/00
Inventor 许升宋华诚田书君单世强
Owner QINGDAO HAIER WASHING MASCH CO LTD
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