JPH0456637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for drying clothes that can automatically select the next drying process depending on the relationship between the temperature of the exhaust air discharged from the inside of the drying chamber of a clothes dryer and the degree of drying. The present invention relates to a control device for a dryer.

Conventional Structure and Problems Conventional clothes dryers are equipped with electrodes that detect the degree of dryness of clothes and a thermistor that detects the temperature of exhaust gas discharged from the drying chamber of the clothes dryer, such as a rotating drum. If the predetermined degree of dryness cannot be detected with the electrode within a predetermined time from the start of the drying process, the drying process is stopped at that point and an abnormality notification is issued. The time from the start to the end of the drying process was set to a long time so that the clothes would be completely dry under any conditions, such as the amount of clothes.

In such conventional clothes dryers, when the amount of clothes is extremely small, if the electrodes cannot be detected because the clothes do not come into contact with the electrodes, or if the electrodes cannot be detected due to a failure in the electrode circuit, it may take a long time. The drying process continues for hours, consuming unnecessary energy, and causes wrinkles due to overdrying of the clothes.

Purpose of the Invention The present invention solves the above-mentioned conventional problems and prevents unnecessary consumption of energy when electrode detection is not possible, which tends to occur when there is not enough clothing, or when electrode detection is not possible due to failure of the electrode detection circuit. An object of the present invention is to provide a control device for a clothes dryer that makes it possible to perform the following functions.

Composition of the Invention A control device for a clothes dryer according to the present invention includes a dryness degree detection means for detecting the degree of dryness of clothes, and a predetermined degree of dryness based on the output of the dryness degree detection means and dryness degree data stored in a storage means. dryness degree determining means for determining whether the clothes are stored in the drying chamber; exhaust temperature detecting means for detecting the temperature of exhaust gas discharged from the drying chamber in which clothes are stored; Exhaust temperature determination means for determining that the exhaust temperature is a predetermined exhaust temperature from the data;
The output of the dryness degree determining means and the output of the exhaust temperature determining means are input, and the exhaust temperature determining means determines the exhaust temperature to a predetermined value before the dryness degree determining means outputs an output indicating that the degree of dryness is a predetermined degree. When the dryness degree determining means outputs an output indicating that the degree of dryness has reached a predetermined degree, a first drying process, which is a hot air drying operation that takes a short time, is executed, and when the dryness degree determining means outputs an output indicating that the degree of dryness is a predetermined degree. If the exhaust temperature determining means outputs an output indicating that the exhaust gas temperature has not reached a predetermined value, the apparatus is equipped with a control means for executing a second drying process, which is a hot air drying operation that takes a long time. .

Description of examples Examples of the present invention will be described below.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. Reference numeral 1 is a dryness degree detection means that detects the electrical resistance of clothing. Reference numeral 2 denotes dryness degree determining means, into which the output of the dryness degree detection means 1 and the output of the storage means 3 are input. Here, the storage means 3 stores data related to determination of degree of dryness, data related to exhaust temperature, data for driving the heater and motor for a predetermined period of time, and the like. The dryness degree determining means 2 generates an output when the degree of dryness of the clothes reaches a predetermined value.

Reference numeral 4 denotes exhaust temperature detection means, which is provided within the exhaust guide. Reference numeral 5 denotes an exhaust gas temperature determining means, which determines a predetermined exhaust gas temperature based on the output of the exhaust temperature detecting means 4 and the data in the storage means 3. The outputs of the dryness degree determining means 2 and the exhaust temperature determining means 5 are both input to the control means 6. The control means 6 controls the heater drive means 7 to control the supply of electricity to the heater. It also controls the motor drive means 8 and controls the supply of electricity to the motor. Further, when an abnormality occurs, the abnormality notification drive means 9 is controlled to make a buzzer sound.

The control means 6 energizes the motor and heater to perform hot air drying, and the dryness level determining means 2
If the exhaust gas temperature determined by the exhaust temperature determining means 5 exceeds a predetermined value before the output of When the drying process is completed, the process is configured to proceed to the next second drying process.

FIG. 2 is a circuit diagram showing a specific configuration of this embodiment. 10 is a main body, and a rotatable drum 11 is provided at the center of the main body. The degree of dryness detection means 1 is constituted by an electrode 1a, and is provided at a position facing the inner surface of the drum so that clothing can easily come into contact with it.

The exhaust temperature detection means 4 is a thermistor 4a,
An exhaust guide 12 is provided for exhausting humid air within the drum 10 to the outside of the main body 9. A heater 13 is provided on the front side of the main body 9 and is energized by the heater drive means 7. Further, a motor 14 is provided at the inner bottom of the main body 9 and is energized by the motor driving means 8. A buzzer 15 that is sounded by the abnormality notification drive means 9 is provided on the front surface of the main body 9. 16 is a microcomputer, which uses a built-in program to determine the degree of dryness, determines the exhaust temperature, and controls the heater 13 and motor 1.
4. Generates signals for driving the buzzers 15, respectively. Specifically, a storage unit 16a that stores dryness degree data, exhaust temperature data, etc.
, an input section 16b that inputs the output of the electrode 1a and the output of the thermistor 4a, an output section 16c that outputs control signals to the heater drive means 7, motor drive means 8, and abnormality notification drive means 9, and the memory. It has an arithmetic control section 16d that controls the section 16a, input section 16b, and output section 16c, respectively, and performs data comparison operations and the like.

Next, the operation of this embodiment will be explained. FIG. 3 shows the main part of a flowchart controlled by the microcomputer 16.

Generally, after putting the material to be dried into the drum 11, the user operates a switch (not shown) to start drying. With this operation, microcomputer 1
6, in step 21, the heater 13 is energized via the heater drive means 7, and the motor 14 is energized via the motor drive means 8 to start hot air drying operation.

As shown in Figure 4, the exhaust temperature when performing hot air drying operation is as follows:
It has been experimentally shown that it becomes like T ₁ , and in extremely small cases it becomes like T ₂ . A predetermined value of the exhaust gas temperature is stored based on the output of the thermistor 4a of the exhaust gas temperature detection means 4, and a predetermined degree of dryness is achieved in step 22 according to the output of the electrode 1a of the dryness degree detection means 1 within the predetermined exhaust temperature. When it is determined that the drying process has been completed, the next second drying process is carried out in step 23. On the other hand, if it is determined that the predetermined exhaust temperature has been reached before the predetermined degree of dryness is reached, the process proceeds to the next first drying step in step 24.
Note that the first drying process is performed using the microcomputer 1 so that the time required is shorter than that of the second drying process.
6, and this constant is used to continue hot air drying operation for a certain period of time from when a predetermined exhaust temperature is reached, and after completion of the hot air drying operation, the power supply to the heater and motor is stopped.

According to the above embodiment, when there is an extremely small amount of clothing, when the driver accidentally drives the car without putting clothes in the car (when a child is driving mischievously), or when the electrode detection circuit fails, the Since the drying process is automatically set, it prevents unnecessary use of energy and also prevents wrinkles.

Effects of the Invention As is clear from the above description, the present invention has a means for detecting and determining a predetermined degree of dryness, a means for detecting and discriminating exhaust temperature, and an output of each of the above-mentioned discriminating means is input, and a predetermined degree of dryness is detected. When the exhaust gas temperature reaches a predetermined temperature before the drying temperature reaches a predetermined temperature, the drying process proceeds to the first drying step and automatically stops energizing the heater and motor after a certain period of time. Even when the degree detection means malfunctions, when the amount of clothes is extremely small, or when the operation is mistakenly carried out without loading clothes, unnecessary energy use and wrinkles on the clothes can be prevented, and the drying effect is always good. It is possible to provide a control device for a clothes dryer that can obtain the following.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of main parts of a control device for a clothes dryer showing an embodiment of the present invention, Fig. 2 is a diagram showing the relationship between the clothes dryer and the control device, and Fig. 3 is an operation of the control device. FIG. 4 is a flowchart showing the relationship between exhaust temperature and drying time. DESCRIPTION OF SYMBOLS 1... Dryness degree detection means, 2... Dryness degree discrimination means, 3... Memory means, 4... Exhaust gas temperature detection means, 5... Exhaust gas temperature discrimination means, 6... Control means.

Claims (1)

[Claims] 1. A degree of dryness detection means for detecting the degree of dryness of clothing; a degree of dryness determination means for determining whether the degree of dryness is a predetermined degree from the output of the degree of dryness detection means and the degree of dryness data stored in the storage means; Exhaust temperature detection means for detecting the temperature of exhaust gas discharged from a drying chamber containing a dryer, and determining whether the exhaust temperature is a predetermined exhaust temperature from the output of this exhaust temperature detection means and the exhaust temperature data stored in the storage means. an exhaust gas temperature determining means; the output of the dryness degree determining means and the output of the exhaust gas temperature determining means are input; outputs an output indicating that the exhaust temperature has reached a predetermined value, executes a first drying step which is a hot air drying operation that takes a short time, and determines that the dryness degree determination means indicates that the dryness degree is a predetermined degree. If the exhaust temperature determining means outputs an output indicating that the exhaust temperature has not reached a predetermined value, the control means executes a second drying process which is a hot air drying operation that takes a long time. Clothes dryer control device with