JPS63183099A - Method for stopping drum at constant position 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 Industrial Application) The present invention relates to a clothes dryer in which a clothes inlet is provided on the outer curved surface of a rotating drum, and particularly to a method for stopping the drum in a fixed position.

(Prior art) Generally, in this type of clothes dryer, a clothes inlet is provided on the front end of the rotating drum, and clothes are taken in and out from the front. If this happens, the position of the clothes slot will be very low, making it difficult to put in and take out clothes in a comfortable position.Especially if the washing machine is installed side by side with a washing machine that loads and takes out clothes from the top, Transferring clothes to the clothes dryer is extremely troublesome and has poor workability.

However, recently, a clothes dryer has been proposed in which a clothes inlet is provided on the outer curved surface of the rotating drum so that clothes can be put in and taken out from the top.0 (Problems to be Solved by the Invention) In order to put this kind of clothes dryer into practical use, it is essential to be able to always stop the rotating drum in a fixed position, and therefore a device and method that can reliably stop the drum in a fixed position is required. It is something.

The present invention has been made in view of these points, and provides a practical method for stopping the drum at a fixed position, thereby making it easier to put this type of clothes dryer into practical use.

(Means for Solving the Problem) The content of the present invention is to dry clothes by providing a clothes input port on the outer curved surface of a rotating drum, rotating the rotating drum by a motor, and drying the clothes with hot air while agitating the clothes. On the machine,
A position detector is provided to detect when the clothes input port of the rotating drum has reached a fixed position, and in response to a stop signal, the motor is controlled based on the output signal of the position detector to perform electromagnetic braking on the motor and reverse drive of the motor. By repeating these steps, the rotating drum is controlled to finally stop at a fixed position.

(Function) During drying operation, if a stop signal is received due to the end of drying or a temporary stop, etc., the system waits until the drum reaches the fixed position once, and when it is detected that it has reached the fixed position by the output signal of the position detector. Apply electromagnetic braking to the motor. Then,
The rotating drum deviates from its home position to some extent in the forward direction due to inertial rotation and then stops. Thereafter, the rotating drum is finally stopped at a fixed position by repeatedly rotating the rotating drum in the opposite direction due to the reverse drive of the motor, electromagnetic braking of the motor, and rotating the rotating drum in the forward direction due to the reverse drive of the motor. do.

(Example) Examples of the present invention shown in the drawings will be described in detail below.

First, in Fig. 2, numeral 1 denotes a dryer outer frame having an opening 2 on the top surface and a top lid 3 for opening and closing this opening 2; 4 denotes a rotating drum rotatably installed inside the outer frame 1; A clothes inlet is provided on the curved surface, and an opening/closing lid 5 is provided on the clothes inlet.

6 is a motor that connects a belt 8 with the rotating drum 4 via an idler 7 and rotates the rotating drum 4 via the belt 8; 9 is a motor that rotates the rotating drum 4 through an idler 7;
) is a position detector that detects when the dryer has reached a fixed position, that is, a position facing the opening 2 of the outer frame 1 of the dryer, and is composed of a combination of a sensor 9a such as a reed switch and a magnet 9b, and the sensor 9a is On the inner surface of the frame 1, the magnets 9b are arranged on the outer circumferential curved surface of the rotating drum 4, respectively.

The magnet 9b turns on the sensor 9a when the clothes input port of the rotary drum 4 reaches a fixed position. 10 is a lid switch that detects whether the upper lid 3 is opened or closed.

Next, in FIG. 3, 11 is an electronic control circuit section, 12 is a key input section, 13 is a display section, and 14 is a buzzer. The electronic control circuit section 11 is mainly realized by a microcomputer, and When the operation ends or the pause key is turned on, control is performed as shown in the flowchart shown in FIG.

The control will be explained below with reference to FIG.

When there is a stop signal during the drying operation, the microcomputer waits until the sensor 9a is turned ON next, and then turns on the sensor 9a.
When the ON signal is input, the main winding side of the motor 6 is turned OFF to provide half-wave conduction to the auxiliary winding, thereby applying electromagnetic braking to the motor 6 for t seconds (for example, 1 second). Then, the rotary drum 4 stops at a position shifted to some extent in the direction of the arrow (positive direction) from the home position due to inertial rotation. Next, the motor 6 is reversed and driven by energizing the auxiliary winding of the motor 6, and the rotating drum 4 is rotated in the opposite direction (opposite to the arrow). The winding side is turned OFF to provide half-wave conduction to the main winding. Then, electromagnetic braking is applied to the rotation of the motor 6 in the opposite direction, and the rotating drum 4 stops at a position shifted in the opposite direction from the normal position after inertial rotation. but,
This time the deviation from the fixed position is much smaller than the previous deviation because the inertial force is small. If half-wave conduction to the main winding of the motor 6 is continued as it is, after the motor 6 stops rotating in the opposite direction, it reverses and starts rotating in the forward direction at a very slow speed. Accordingly, the rotating drum 4 also moves at a very low speed (
The drum rotates in the forward direction at a rate of about 1C per second around the outer circumference of the drum. When the sensor 9a turns on with this rotation, if the power to the motor 6 (half-wave conduction of the main winding) is turned off,
The rotating drum 4 immediately stops. In this stop position, the rotating drum 4 connects the clothes input port to the opening 2 of the dryer outer frame 1.
It is located in a fixed position opposite to the machine, so that clothes can be put in and taken out.

In the above embodiment, a combination of a reed switch and a magnet is used as the position detector, but it may also be a combination of a light emitting element and a light receiving element with a light shielding plate.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and it goes without saying that the present invention can be implemented with appropriate modifications within the scope of the invention.

(Effects of the Invention) As described above, according to the present invention, the one-rotation drum can be reliably stopped at a fixed position at all times, and it is easy to put into practical use a clothes dryer in which the clothes input port is provided on the outer curved surface of the rotary drum. It is possible to improve the work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a stop control flowchart of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional configuration diagram of the dryer,
FIG. 3 is a block diagram of the same control. 4: Rotating drum, 5: Opening/closing lid (clothing slot), 6: Motor, 9: Position detector, 11: Electronic control circuit section.

Claims (1)

[Claims] 1. In a clothes dryer that has a clothes inlet on the outer curved surface of the rotating drum and dries the clothes with hot air while rotating the rotating drum with a motor, the clothes inlet of the rotating drum reaches a fixed position. A position detector is provided to detect when the rotary drum is stopped, and in response to a stop signal, the motor is controlled based on the output signal of the position detector, and electromagnetic braking and reverse driving of the motor are repeated to stop the rotating drum at a fixed position. A controlled method for stopping the drum of a clothes dryer at a fixed position.