JPH0368719B2 - - Google Patents

Description

Detailed Description of the Invention The present invention once finishes drying at a low drying rate, then notifies and stops the drying operation, then automatically resumes drying operation after a certain period of time, and once it is completely dry, notifies and stops the drying operation again. This invention relates to a clothes dryer that performs the following operation.

Previously, the machine operated continuously until it was completely dry and notified when the drying was completed, so if you took out the clothes at this time, the clothes would have already dried.
The drawback was that it was not possible to iron it.

In order to solve this problem, the present invention makes a notification once and stops the operation when the clothes are moist enough for ironing (drying rate 90-100%). At this time, the user can take out the clothes and stop the remaining operation of the dryer. Also, if the clothes are not taken out at this point, the drying operation will automatically resume after a certain period of time, and once the clothes are completely dry (drying rate 102-104%).
The system will notify you again and end the operation, which can also meet the user's request for complete drying.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a basic configuration diagram of the present invention. 1 is a dryness detection sensor, for example, a pair of electrodes installed inside the drum, which generates the electrical resistance of clothing as a voltage;
It is input to the dryness detection means 2. The dryness detection means 2 is a circuit that receives 1 as an input and outputs an output if, for example, the period during which the resistance value is greater than a set value is longer than a predetermined time, and the output is input to the first time limit means 3 and the logic means 5. . Reference numeral 3 denotes a first timer means, which is a circuit that receives the output of the dryness detecting means 2 and delays it for a predetermined period of time, such as a timer IC. The time delayed by this time limit means is the shutdown time during which the clothes wait to be taken out in a damp state suitable for ironing. This output is input to the second timer means 4. Reference numeral 4 denotes a second timer means, for example, a timer IC, which takes the output of the first timer means 3 as an input, and measures the operating time of the dryer until complete drying after restarting the operation. The output is input to logic means 5. 5 is a logic means that outputs an output until the output of 2 is output and while the output of 4 is output. The output is input to the load control means 6 and the notification means 7. Reference numeral 6 denotes a load control means, which is composed of, for example, a driver and a relay, and controls turning on and off of the heater and motor. Reference numeral 7 denotes a notification means, which is composed of, for example, a one-shot multivibrator and a buzzer. When the output of 5 disappears, a current is passed through the buzzer for a certain period of time to notify the user.

FIG. 2 is an embodiment of the present invention. Reference numeral 8 denotes an electrode for detecting electrical resistance of clothing provided inside the drum.
2 is a dryness detection circuit, which receives the resistance change from 8 as an input, and outputs a low output while the cloth is damp, but changes to a high output when it detects that the drying rate is between 90 and 100%. 9 is a timer IC whose output is low while the input is low, but after the input becomes high, the resistor 10 and capacitor 1
While counting the clock determined by 1, the output is set to High, and when the count ends, the output is set to Low. 12 is a resistor that allows output current to flow. Reference numeral 13 is an exclusive OR circuit which performs an exclusive OR with the signal and outputs a waveform that is a delayed version of the input. 14 is the same timer IC as 9, and after the input becomes High, the output becomes High for a certain period of time. 18 and 19 invert the output of the exclusive OR of 18 by pulling one of 19 to High,
The output becomes High until the output of the detection circuit 2 is output and while the output of the detection circuit 14 is output. 20 is resistance,
21 is a transistor that amplifies the output of 19 and drives a load control relay 22. 23 to 34 are one-shot multivibrators, and the output of 19 is differentiated by the capacitor 23, and the output is inverted when a negative pulse is input, so that the output changes from high to high.
The output becomes High for a certain period of time after going Low. A resistor 35 and a transistor 36 amplify the output of the one-shot multivibrator to drive a buzzer 37. FIG. 3 shows the voltage waveform from point to point.

As described above, according to the present invention, by adding an operation operation that notifies you when the clothes are slightly damp and temporarily interrupts the drying operation, when you want to iron the clothes after drying them in the dryer, you can restart the clothes again. This has the effect of saving energy by eliminating the wasteful work of moistening with steam and shortening the operating time of the dryer.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a dryer according to an embodiment of the present invention, Fig. 2 is a specific circuit diagram of the same, Fig. 3A,
B, C, D, E, and F are operating waveform diagrams. 1... Dryness detection sensor, 2... Dryness detection means, 3...
First time limit means, 4...Second time limit means, 5...Logic means, 6...Load control means, 7...Notification means.

Claims (1)

[Claims] 1. A dryness detection sensor, a dryness detection means that receives this dryness sensor as an input, a first timer that delays and outputs the output of this dryness detection means, and this first
a second timer which takes as input the output of the timer and outputs an output for a certain period of time after the input is applied;
a logic means which takes the outputs of the dryness detection means and the second timer as input and outputs an output until the output of the dryness detection means is output and while the output of the second timer is output; and this logic means A dryer comprising: load control means for causing current to flow through the load while the output from the logic means is being output; and means for notifying for a certain period of time when the output from the logic means disappears.