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Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine

A lint filter and clothes dryer technology, applied in the field of clothes dryers, can solve problems such as the influence of environmental temperature changes, long judgment time, etc., and achieve the effects of energy saving, short time, and no time retention.

Inactive Publication Date: 2015-04-29
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This judgment method adopts an indirect judgment method, which is easily affected by changes in the measurement position and ambient temperature, and the judgment needs to be heated for at least a certain period of time, and the judgment time is long.

Method used

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  • Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine
  • Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine
  • Method for judging blockage of line chip filter of clothes drying machine and clothes drying machine

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Experimental program
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Effect test

Embodiment 1

[0050] When the pressure is detected, the pressure is connected with the frequency of the oscillating circuit, and the pressure is detected by the frequency change measured by the test circuit. The principle of pressure detection by the pressure detection device is: use the catheter to introduce the air at the measurement point into the air chamber. When the air pressure increases, the diaphragm in the air chamber drives the spring and the iron core to move under the pressure. When the air pressure decreases, the spring Push the diaphragm to move in the opposite direction. Use the position change of the iron core to change the inductance in the LC oscillating circuit to change the frequency of the oscillating circuit, and establish a relationship between the air pressure and the frequency of the oscillating circuit:

[0051] f=1 / [2*π*SQRT(L*C)], the pressure can be judged by the frequency difference measured by the test circuit.

Embodiment 2

[0053] According to this embodiment, a clothes dryer using the above judgment method includes a drying air duct and a lint filter in the drying air duct, and a pressure detection device is also installed in the drying air duct, and the pressure detection device It includes a pressure sensor for detecting the pressure at the front of the lint filter and / or a pressure sensor for detecting the pressure at the rear of the lint filter, and the pressure sensor is an inductive pressure sensor. The pressure sensor is connected with the main control board of the clothes dryer, and transmits the detected pressure signal to the main control board.

[0054] like figure 1 As shown, the pressure sensor includes a gas chamber 1, a diaphragm 6 and an iron core 4 in the gas chamber 1, a spring 3 connected to the diaphragm 6, and the diaphragm 6 is slidably connected to the inner wall of the gas chamber 1, but is sealed. connected, the iron core 4 is fixed on the diaphragm 6, and one end of th...

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Abstract

The invention relates to a method for judging a blockage of a line chip filter of a clothes drying machine and the clothes drying machine. After a clothes drying program starts, the pressure at the front part and / or the back part of a line chip filter are / is detected, the blockage degree of the line chip filter is judged through pressure change, and is feedback to a user, the user is reminded of cleaning the line chip filter, the front part and the back part of the line chip filter are respectively provided with a pressure detection device for pressure detection, in addition, the detected pressure value is transmitted to a main control panel, the main control panel calculates the front and back pressure difference of the line chip filter and compares the pressure difference with a standard difference value, and the blockage degree of the line chip filter is judged. The condition blockage of the line chip filter is directly judged through the variation quantity directly caused after the blockage of the line chip filter, the mode is direct and accurate, the detection is precise, and no time retention exists.

Description

technical field [0001] The invention relates to the field of clothes dryers, in particular to a method for judging the clogging of a lint filter of a clothes dryer and a clothes dryer using the method. Background technique [0002] Existing clothes dryers, especially heat pump clothes dryers, often use a multi-layer dense filter to filter the lint in order to prevent the lint from entering the heat exchanger or being blown out into the environment. If the filter screen is not cleaned in time after drying, the accumulation of lint will cause the attenuation of the drying air volume and affect the drying efficiency. Therefore, according to the parameter changes of the drying system, prompting when the lint is blocked can improve the energy efficiency. [0003] In the past, the method of judging the clogging of lint was mostly based on the temperature difference. For example, the Chinese patent No. 20121016316.2 disclosed a control method for judging the clogging of the lint f...

Claims

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Application Information

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IPC IPC(8): D06F58/22D06F58/28
CPCD06F58/22D06F34/28D06F58/30D06F2105/58
Inventor 许升宋华诚田书君单世强
Owner HAIER GRP CORP
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