JPH0747080B2 - Clothes dryer control device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer control device for detecting an abnormality and displaying / notifying the abnormality.

2. Description of the Related Art When a filter in a drum is clogged or a temperature controller malfunctions and the temperature inside the refrigerator abnormally overheats, the conventional control device for a clothes dryer notifies the abnormality by buzzing a buzzer. Was there.

Problems to be Solved by the Invention In such a conventional clothes dryer control device, whether abnormal heating due to clogging of the filter or abnormal heating due to a failure of the temperature controller is the same abnormality notification, so it is easy to distinguish. I couldn't. Also. Other failures such as failure of the flame detection circuit and failure of the gas valve drive circuit will occur in a gas clothes dryer. In such a failure,
There was a problem that I couldn't drive and I couldn't figure out what was the cause. In addition, it may be possible to display or notify by buzzer sound according to the content of the failure, but in this case, the user will also be notified / displayed of an abnormality that cannot be dealt with, which is rather complicated and convenient for the user. There was a problem of getting worse. That is, some of the failure contents cannot be repaired or inspected even if they are notified to the user, and it is meaningless to give an abnormality notification according to the failure contents for this kind of failure contents.

The present invention solves the above problems and provides an abnormality notification corresponding to various abnormal contents, but an object thereof is to provide a clothes dryer having an abnormality notification function which is not complicated and is convenient to use. It is what

Means for Solving the Problems In order to achieve the above object, the clothes dryer control device of the present invention is a state input section for detecting a control state of the clothes dryer,
A key input section for instructing setting of control contents or operation start / stop, a sequential operation control section for controlling each load by a signal from the key input section, and a display section controlled by the sequential operation control section, The sequential operation control unit inputs various abnormalities in response to the signal from the state input unit, and when the inputted abnormalities are abnormalities that can be inspected by the user, an abnormality display corresponding to the contents of the inputted abnormalities is displayed. If the input abnormality is a failure of a component, an abnormality display different from the case where the abnormality can be inspected by the user is displayed, and if a specific key input signal is input from the key input section, It is configured to display an abnormality corresponding to the failure of the component.

Operation With this configuration, the abnormality notification that can be inspected by the user is notified according to the abnormality content, and other specific abnormalities are all reported as the same abnormality notification by the specific key input signal from the key input section. Abnormality notification corresponding to all the abnormality contents is performed.

As a result, the abnormality content that can be inspected by the user can be notified, and the other abnormality content can be notified only to a specific operation.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. In FIG. 1, reference numeral 1 denotes a key input unit, which is composed of a start switch 2 for starting the operation, a temporary stop switch 3 for temporarily stopping the operation, and a drying course switching switch 4 for switching the drying course. The state input unit 5 includes a flame detection unit 6 that detects combustion, an abnormal heating detection unit 7, a temperature adjustment unit 8 and a detection terminal 9. The flame detection unit 6 is, for example, a detection unit of a thermocouple type or a frame rod type. The abnormal heating detection unit 7 is a temperature switch that operates when the inside temperature becomes abnormally high. The temperature controller 8 keeps the internal temperature constant. The detection terminal 9 is for checking the circuit of the valve drive section. When the gas valve 14 is turned on, the transistor 16 is turned off, and the detection terminal 9 becomes high level. The display units 10 to 13 are composed of light emitting diodes. A gas valve 14 that opens and closes the gas passage is controlled by a transistor 15. The igniter 17 ignites the burner. A motor that rotates the drum that puts clothes in and rotates the fan that sends the hot air from the burner into the drum.
Is controlled by the semiconductor switching element 19 and the transistor 20. The buzzer 25 notifies the end or sounds at the time of abnormality. The power supply unit 24 converts the AC power supply 21 into a DC power supply and supplies it to each element. The power switch 22 supplies the AC power supply 21 to the motor 18. The sequential operation control unit 23 is a microcomputer including a memory (RUM) that stores a sequence program, a temporary storage memory (RAM), an arithmetic unit, an input unit, an output unit, and the like.

Among the above-mentioned components, the operation panel section includes the display sections 10 to 13 shown in FIG. 2, a start switch 2 which constitutes the key input section 1, a temporary stop switch 3, a dry course changeover switch 4 and a power switch 22. It is arranged.

The operation of the above configuration will be described. First, the power switch
When 22 is turned on and the start switch 2 is pressed, the sequential operation control means 23 lights the standard course lamp 11 and starts the operation on the standard course. That is, the motor 18 is rotated by controlling the transistor 20 and the semiconductor switching element 19, and after a few seconds, the igniter 17 is ignited. Next, the gas valve 14 is turned on to supply gas to the burner, and the spark of the igniter 7 is ignited. When ignition occurs and the burner burns, the flame detection unit 6 inputs an ignition signal to the sequential operation control unit 23. In response to this signal, the sequential operation control unit 23 turns off the igniter 17 and turns on the combustion lamp 13 indicating that combustion is in progress. The state of the display unit at this time is shown in FIG. 3 (the shaded portion of the lamp indicates lighting). When switching the drying course,
Each time the dry course changeover switch 4 is pressed, the economy course is switched to the elaborate course to the standard course, and the lamps 10 to 12 corresponding to the course are turned on.

Next, the abnormal state will be described. As the contents of the abnormal state, the following six types of abnormal contents will be described.
Gas is not supplied to the burner with the main gas valve closed, and does not ignite after a certain period of time (non-ignition). When the flame is extinguished during combustion (extinguished), the flame detection unit 6 detects the flame. When the filter inside the drum is clogged and the temperature inside the chamber becomes abnormally high, the abnormal heating detection unit 7 determines that the heating is abnormal. Further, even if the power switch 22 is turned on and the start switch 2 is not pushed, when the flame detection part 6 has a combustion signal or when the temperature control part is operating, the gas valve 14 is turned on and the valve detection terminal 9 is turned on. At high level.

In such an abnormal state, the operation is stopped, the buzzer 19 is blown to inform the user of the abnormality, and the contents of the abnormality are displayed on the display lamps 10 to 13. In this case, a display different from the normal display method (for example, the combination of lighting of the display lamps and the blinking period is changed) is performed.

Regarding the above-mentioned non-ignition, extinguishing, and abnormal heating of the abnormality content, there may be a cause depending on the user's usage. First, an abnormality display corresponding to the abnormality content is displayed to ask the user what the cause of the abnormality is. Make it recognizable. Also,
The contents of anomaly are caused by the failure of the control device of the product, and the anomaly display should be the same. In addition, in FIG.
Lamps with diagonal lines indicate lighting, and lamps without diagonal lines indicate turning off. Normally, only one of the dry course lamps 10 to 12 lights up, but when an abnormality is reported, two lamps are lit, and they light up according to the content of the abnormality, non-ignition, extinguishing,
It can be distinguished from abnormal heating and failure of the control unit.

Next, the abnormal contents of will be described. The user does not understand the cause of the abnormality because the abnormality display is the same even if the contents of abnormality 1 to 3 occur during normal use. In this case, when the power switch 22 is turned on while the start switch 2 and the temporary stop switch 3 are being pressed, the reset of the sequential operation control unit 23 is released and at the same time the signals of the start switch 2 and the temporary stop switch 3 are changed. Input at the same time. When the input signal is different from the normal one, the sequential operation control means 23 determines that the inspection process is performed.

When it is determined that it is an inspection process, the sequential operation control unit 23 performs exactly the same control as the operation sequence, and when it is determined that the signal of the state input unit 5 is abnormal, the display of the display units 10 to 13 is performed according to the content of the abnormality. Are performed differently as shown in FIG.
In FIG. 5, the shaded lamps are on, and the non-shaded lamps are off. By controlling in this way,
Abnormalities that can be resolved by the user are displayed, and in the case of a circuit failure that the user cannot deal with, if an inspection process is set by an unusual key input operation, all abnormal contents can be displayed and the service person can easily do it. You can know the details of the abnormality.

Effects of the Invention As described above, according to the present invention, regarding the abnormality content that the user can inspect to determine whether it is a mistake in use or a product failure, an abnormality notification corresponding to the abnormality content is performed,
In addition, by inputting a specific key input signal to the service person to notify the abnormality about all the details of the abnormality, when the product stops due to an abnormality, the user can inspect it to some extent. The service person does not have to deal with the cause by the above, and the failure point becomes clear to the service person, so that inspection and repair can be promptly performed. Further, the abnormality notification is not complicated, and the usability is improved. In addition, since the user can be notified of abnormalities that can be removed by inspection separately from abnormalities due to equipment failure, the user can eliminate abnormalities that can be removed by inspection and continue drying. In addition, it is possible to prevent the occurrence of wrinkles or the like caused by taking out the clothes from the clothes dryer and leaving the clothes undried for a long time when the device needs to be repaired due to a malfunction of the device.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a clothes dryer controller in an embodiment of the present invention, FIG. 2 is a diagram showing the operation panel unit, and FIG. 3 is a diagram showing a display state of the operation panel unit during operation, FIG. 4 is a diagram showing an abnormality notification state during normal use, and FIG. 5 is a diagram showing an abnormality notification state during an inspection process. 1 ... Key input section, 5 ... Status input section, 10-13 ... Display section, 23 ... Sequential operation control section.

Claims (1)

[Claims] 1. A state input section for detecting a control state of a clothes dryer, a key input section for instructing setting of control contents or start / stop of operation, and a sequence for controlling each load by a signal from the key input section. An operation control unit and a display unit controlled by the sequential operation control unit are provided, and the sequential operation control unit inputs various abnormalities by a signal from the state input unit, and the input abnormalities can be inspected by a user. If it is abnormal,
An abnormality display corresponding to the content of the input abnormality is displayed.If the input abnormality is a component failure, an abnormality display different from the one that can be inspected by the user is displayed and specified from the key input section. When a key input signal is input, a controller for a clothes dryer configured to display an abnormality corresponding to a failure of the component.