JPS59214497A - Controller of clothing dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for automatically detecting dryness in a clothes dryer.

Conventional configurations and their problems Traditionally, in household electric dryers, etc., the operating time of the dryer was set by the user relying on intuition.
This will cause variations in the drying state. Improve this. For this purpose, electrodes were installed in the drying drum to measure the electrical resistance of the clothes, detect dryness of the clothes, and control the dryer N'. However, in this case, the resistance value for dryness detection is several tens of thousands.
It was set to a value of MΩ to approximately 1009, and when the electrical resistance of the clothing exceeded this value, it was only detected that the clothing was dry, and the drying rate of the clothing could only be roughly controlled. In addition, in recent years, the method of using the dryer has been to dry the clothes slightly damp, which is approximately 95% dry
As the dryer has come to be used by stopping the dryer once it has dried to a certain percentage, taking out the clothes and ironing them, more precise control has become necessary.

Purpose of the Invention The present invention provides a control device for a clothes dryer that can detect when the clothes are in a slightly damp state with a drying rate of approximately 96%, and can also finely control the drying rate during drying. .

Structure of the Invention The control device for a clothes dryer of the present invention includes a plurality of electrodes provided in a drying drum, a resistance detection device that detects the resistance value between these electrodes, and a control means that controls loads such as a heater and a motor. and the resistance value between the electrodes is 10MΩ to 20MΩ.
A detection device detects that the resistance becomes Ω, and a control means controls the heater and motor.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes clothing, 2 a drying drum in which the clothes are rotated and dried with hot air, 3 an electrode provided in the drying drum 2 to detect the electrical resistance of the clothing 1 that comes into contact with it, and 4 6 is a temperature sensor that detects the temperature of the exhaust gas from the drum; 6 is a temperature sensor that detects the resistance between the electrodes of the electrode 3;
Reference numeral 7 denotes a control means for controlling the drive of the heater 8, motor 9, etc. based on the detection signals from the resistance detection device 4 and the temperature detection device 6.

To explain the operation in the above configuration, when the clothing 1 is initially wet, the resistance value between the electrodes 3 is in a state of several Ω, but when the clothing 1 dries and the resistance value exceeds 10MΩ to 20MΩ, the resistance is detected. The device 4 detects this, sends a signal to the control means 7, stops the heater 8 and motor 9, and ends the drying. At this time, the relationship between the resistance between the electrodes 3 and the drying rate of the clothing 1 is as shown in Figure 2, so when the drying rate of the clothing 1 reaches approximately 96 cm, the air blowing operation is started for a certain period of time, and the dryer 9 stops. .

Therefore, if you take out the clothes 1 as they are, you can immediately iron them.

Also, after the electrode 3 detects that the drying rate of the clothing 1 is approximately 96%, the temperature sensor 6 detects the exhaust temperature from the drying drum, and has the exhaust temperature increased to a certain level or higher? When the temperature detection device 6 detects that the clothes 1 are dry, the electric blowing operation is started and stopped. By setting the temperature rise value at this time to a constant value, there is an effect that the drying rate of the clothes can be kept constant.

Effects of the Invention As is clear from the above embodiments, the control device for a clothes dryer of the present invention is particularly advantageous in that the detection resistance of the electrodes ranges from 1゜MΩ to 2゜Omega.
By setting between M'j;), it is possible to dry the clothes to a total dryness rate of about 95%, stop the dryer, take them out, and iron them. In addition, by stopping drying when the exhaust temperature rise reaches a certain value after detection with electrodes, it is possible to dry clothes at a constant drying rate, and the practical effect is There is something.

[Brief explanation of drawings]

FIG. 1 is an electrical block diagram of a control device for a clothes dryer according to an embodiment of the present invention, and FIG. 2 is a diagram showing the correlation between inter-electrode resistance and drying rate of clothes. 2... Drying drum, 3... Electrode, 4...
...Resistance detection device 5 ...Temperature sensor,
6... Temperature detection device, 7... Control device, 8... Heater, 9... Motor.

Claims (2)

[Claims] (1) A plurality of electrodes provided in the drying drum, a resistance detection device for detecting the electrical resistance between the electrodes, and a control means for controlling the load based on the signal of the resistance detection device, The electrical resistance between 10MΩ and 2. It is detected by the resistance detection device that the resistance has reached oMΩ, and then the air blowing operation is started for a certain period of time and then stopped, and the drying rate of the clothes is 96%.
Clothes dryer control device that controls (2) A temperature detection device including a plurality of electrodes provided in the drying drum, a resistance detection device that detects the electrical resistance between the electrodes, and a temperature sensor that detects the temperature of the exhaust gas from the drying drum; and a control means for controlling the load based on the signal from the detection device, and the electric resistance between the electrodes is 10.
The resistance detection device detects that the resistance has changed from MΩ to 20MΩ, and then, as the exhaust temperature rises to a certain level, it detects that the clothes are dry, and after switching to air blowing operation, it is stopped and the drying rate of the clothes is determined. Clothes dryer control device that controls.