JPH0548159B2 - - Google Patents

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 put in and taken out from the front. If you do so, the position of the clothes slot will be very low, making it difficult to put in and take out clothes in a comfortable position. Transferring to the dryer is extremely troublesome and has poor workability.

However, recently, an opening is provided on the top surface of the outer frame of the dryer, a top cover is provided to open and close this opening, and a clothes input port is provided on the outer curved surface of a rotary drum rotatably installed inside the outer frame of the dryer. At the same time, an opening/closing lid is provided to open and close this clothing slot.
When the rotating drum is in a fixed position and the opening and the clothes input port are opposite each other, clothes can be taken in and out of the rotating drum from the top of the dryer through the opening and the clothes input port. Clothes dryers have been proposed.

(Problems to be Solved by the Invention) By the way, in putting such a clothes dryer into practical use, it is necessary to take clothes in and out of the rotating drum through an opening on the top surface of the dryer and through a curved outer surface of the rotating drum. Because the process is carried out from the top of the dryer through the input port, it is essential to stop the rotating drum accurately at a fixed position so that the clothes input port and the opening are located in opposite positions. There is a need for a device and method that can accurately stop the machine at a fixed position.

The present invention has been made in view of the above points, and the present invention is designed so that clothes can be put in and taken out from the top of the dryer through an opening on the top of the dryer and a clothes inlet formed on the outer circumferential surface of the dryer. To provide a method for stopping the drum of a clothes dryer at a fixed position, thereby making it possible to easily put this type of clothes dryer into practical use.

(Means for Solving the Problems) The present invention solves the above problems, and its contents will be explained using drawings corresponding to embodiments.

An opening 2 is provided on the upper surface of the dryer outer frame 1, an upper lid 3 is provided for opening and closing this opening 2, and a rotating drum 4 is rotatably installed inside the dryer outer frame 1.
A clothes inlet is provided on the outer circumferential curved surface of the machine, and an opening/closing lid 5 is provided for opening and closing the clothes inlet. Clothes are taken in and out of the rotating drum 4 from the top surface of the dryer through the opening 2 and the clothes input port, and the rotating drum 4 is rotated by the motor 6 to dry the clothes with hot air while agitating the clothes. In the dryer, a magnet 9 provided on the rotating drum 4, a first reed switch 10 located on the side of the dryer outer frame 1 and turned on by the magnet 9 when the rotating drum 4 reaches the stop reference position, and the dryer When the rotating drum 4 reaches the fixed position on the outer frame 1 side, the magnet 9
The second reed switch 11 is turned on.

After the stop signal is input, the drum drive motor 6 is electromagnetically braked for a certain period of time by the ON signal of the first reed switch 10, and thereafter the drum drive motor 6 is controlled based on the ON/OFF signal of the second reed switch 11. By controlling the direction of rotation, electromagnetic braking, etc., the rotating drum 4 is finally stopped at a fixed position.

(Function) When there is a stop signal due to the end of drying or a temporary stop during drying operation, the reed switch 10 is held until the first reed switch 10 is turned on.
0 ON signal applies electromagnetic braking to the motor 6 for a certain period of time. Then, the rotating drum 4 will stop after rotating inertia to some extent, but during this time the second
Check whether reed switch 11 is turned on.
If it is determined that the rotary drum 4 has passed the normal position by turning on the second reed switch 11, the drum drive motor 6 is reversed and the rotary drum 4 is turned on.
In the opposite direction, if the second reed switch 11 is not turned on and it is determined that the rotating drum 4 has not yet reached the fixed position, the drum drive motor 6 is rotated in the forward direction to rotate the rotating drums 4 in the forward direction. , the second reed switch 11 is turned on to apply electromagnetic braking to the motor 6 again. After that, the second reed switch 11
The motor 6 is controlled by ON and OFF signals to finally stop the rotating drum 4 at a fixed position.

(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. Reference numeral 6 denotes a drum driving 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 a magnet provided on the outer periphery of the rotating drum 4, and 10 an outer A first reed switch 11 is located on the frame 1 side and is turned on by the magnet 9 when the rotating drum 4 reaches the stop reference position. ) is a second reed switch that is turned on by a magnet 9 when it reaches a position (regular position) facing the opening 2 of the outer frame 1, and 12 is a lid switch that detects whether the upper lid 3 is opened or closed. The stop reference position is a position where electromagnetic braking is applied to the motor 6, and is set based on the distance through which the rotary drum 4 inertially rotates before it stops after electromagnetic braking is applied to the motor 6, and the fixed position.

Next, in FIG. 3, 13 is an electronic control circuit section, 14 is a key input section, 15 is a display section, and 16 is a buzzer. Upon completion of the operation or when 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 first reed switch 10 is turned on, and when it detects that the rotary drum 4 has reached the stop reference position by turning on the first reed switch 10. , the main winding side of the motor 6 is turned off and half-wave conduction is applied to the auxiliary winding, thereby applying electromagnetic braking to the motor 6 for a certain period of time t ₁ seconds (for example, 1 second). Then, the rotating drum 4 will stop after gaining some inertia, but during this time the second reed switch 1
1 is turned on or not, and the result is memorized.

Then, it is determined whether the second reed switch 11 has been turned on due to inertial rotation, and thereby it is determined whether the rotating drum 4 has passed the normal position. When it is determined that the rotary drum 4 has passed the normal position by turning on the second reed switch 11, the auxiliary wire winding of the motor 6 is energized to rotate in the opposite direction, and then the second reed switch 11 is turned on. When this occurs, the auxiliary winding side of the motor 6 is turned off to provide half-wave conduction to the main winding, thereby applying electromagnetic braking to the motor 6. Then, the rotating drum 4 will still pass the normal position and stop due to the inertial force, but since the inertial force this time is small, it will stop slightly deviating from the normal position. Even in this stop position, the clothes input port of the rotating drum 4 and the opening 2 of the dryer outer frame 1 are in an opposing position relationship, and clothes can be put in and taken out without any trouble. The stopping position has been further modified to further improve the accuracy of stopping at a fixed position. When the motor 6 is rotating in the opposite direction, if you turn off the auxiliary winding as described above and apply half-wave conduction to the main winding to apply electromagnetic braking, the rotation in the opposite direction will stop, but the electromagnetic When braking is continued, the motor 6 rotates in the forward direction at a very low speed (approximately 1 cm per second around the outer circumference of the rotating drum 1). Therefore, the second reed switch 11 is turned on.
The electromagnetic braking is continued until the rotary drum 4 is finally stopped at a fixed position.

Even if it is determined that the second reed switch 11 is not ON and the rotating drum 4 has stopped before reaching the home position, the control will be performed in the same way as in the above case, but the rotation direction will be the same as in the previous case. The relationship is the opposite.

(Effects of the Invention) As described above, according to the present invention, the rotating drum is always reliably stopped at a fixed position, the clothes inlet of the rotating drum and the opening of the outer frame of the dryer are accurately positioned opposite each other, and the clothes The dryer can be easily loaded and unloaded from the top of the dryer, and when the rotating drum reaches the stop reference position, electromagnetic braking is applied to the drum drive motor for a certain period of time, and then the rotating drum is stopped at the fixed position. Therefore, the stopping time of the rotating drum can be shortened, and a clothes dryer in which clothes are loaded and unloaded from the top of the dryer can be easily put into practical use, and its workability can be improved.

[Brief explanation of drawings]

FIG. 1 is a stop control flowchart of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a schematic sectional view of the dryer, and FIG. 3 is a control block diagram thereof. 1: Dryer outer frame, 4: Rotating drum, 5: Opening/closing lid (clothing slot), 6: Drum drive motor, 9: Magnet, 10: First reed switch, 11:
Second reed switch, 13: electronic control circuit section.

Claims (1)

[Scope of Claims] 1. An opening is provided on the upper surface of the outer frame of the dryer, and a top lid is provided for opening and closing this opening, and a clothes input port is provided on the outer curved surface of a rotary drum rotatably installed in the outer frame of the dryer. In addition, an opening/closing lid for opening and closing the clothes inlet is provided, and when the rotating drum is in a fixed position and the opening and the clothes inlet are in opposing positions, the opening and the clothes inlet can be opened and closed from the top surface of the dryer. A clothes dryer in which clothes are loaded into and taken out of a rotating drum through an input port, and the rotating drum is rotated by a motor to dry the clothes with hot air while agitating the clothes, a magnet provided on the rotating drum; A first reed switch located on the outer frame side of the dryer that is turned on by a magnet when the rotating drum reaches the stop reference position, and a first reed switch located on the outer frame side of the dryer that is turned on by a magnet when the rotating drum reaches the home position. A second reed switch is turned on, and the first reed switch is turned on after a stop signal is input.
The signal applies electromagnetic braking to the drum drive motor for a certain period of time, after which the second reed switch is turned on.
A method for stopping a drum in a clothes dryer in a fixed position by controlling a drum drive motor based on an OFF signal and finally stopping the rotating drum in a fixed position.