JP3324300B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer for circulating warm air into a rotating drum driven by a motor to dry clothes.

[0002]

2. Description of the Related Art In recent years, there has been proposed a clothes dryer for household use which detects opening and closing of a door of a rotating drum for drying clothes and controls the rotating drum and heating means by opening and closing the door.

Conventionally, this type of clothes dryer has been disclosed in
No. 712298. That is, a projection bar is attached to the door, and a door opening / closing detection switch is attached to a position facing the projection bar to constitute a door opening / closing detection mechanism to detect the opening / closing of the door.

[0004]

In such a conventional clothes dryer, the opening and closing of the door is detected by a projection bar.
If there is no suitable jig or tool to replace the projection bar,
There was a problem that it was difficult to check the rotation state of the rotary drum with the door opened.

[0005] The present invention solves the above-mentioned conventional problems.
It is an object of the present invention to be able to check the rotation state of a rotating drum with a door opened without a special jig or tool.

[0006]

In order to achieve the above object, the present invention provides a rotating drum for drying clothes, a blowing means for circulating warm air into the rotating drum, and a blowing path into the rotating drum. Heating means, a door for putting clothes into the rotating drum, a motor for rotating the blowing means or the rotating drum, an opening / closing detecting means for detecting opening / closing of the door, and operation by a push button operation Setting means for starting or setting an operation stroke, and control means for controlling the number of rotations of the motor and the heating means, wherein the control means performs an operation check of the rotating drum.
An inspection step is provided, and in the inspection step, the opening / closing inspection is performed.
Irrespective of the presence or absence of the detection signal of the informing means,
To by that operation set to the normal special configuration method that does not use the
Ri, the previous Symbol rotating drum from the control can be the slowest to fastest
Of the plurality of rotation speeds set by the operation setting
The first problem-solving means is that the operation is controlled by the number and the rotation state can be checked .

Further, the closing detection means of the first means for solving the problem is in a magnet mounted on the door, and second means for solving problems by being configured by a magnetic sensor for detecting the proximity of the magnet.

[0008]

According to the first aspect of the present invention, there is provided :
In the inspection process to check the rotation of the rotary drum, and Ru can rotate the rotating drum with open door <br/>
Because, even without special jig can be rotated controls the rotation drum, the door state on can check the rotational state of the rotating drum open, the confirmation of the failure or during operation check
Ru can be facilitated.

According to the second means for solving the problem, the structure of the door open / close detecting means can be simplified, the number of parts can be reduced, and the cost can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, a rotary drum 1 is for storing and drying an object to be dried (clothing), and circulates warm air in the rotary drum 1 by a heat exchange type double-wing fan (blower means) 2. . The heat exchange type double-wing fan 2 circulates warm air in the rotating drum 1 and simultaneously takes in air from the outside to cool the fan and dehumidifies the circulating air in the rotating drum 1.
The PTC heater (heating means) 3 is disposed in a blowing path to the rotary drum 1, that is, in a circulating air intake, and heats circulating air.

The door 4 puts clothes into the rotating drum 1 so that the clothes and warm air in the rotating drum 1 do not go outside. The motor 5 drives the rotary drum 1 and the heat exchange type two-blade fan 2 to rotate. By controlling the rotation speed of the motor 5, the rotation speed of the rotary drum 1 and the heat exchange type two-blade fan 2 can be controlled. 3 can be controlled, and current control can be performed.

The rotation detecting means 6 detects the number of rotations of the rotary drum 1, and has a first magnet 6a mounted on the rotary drum 1 and a first magnetic sensor 6 opposed to the first magnet 6a.
The number of rotations of the rotary drum 1 is detected by arranging b. The opening / closing detecting means 7 detects opening / closing of the door 4, and attaches a second magnet 7 a to the door 4 and faces the second magnet 7 a so as to face the second magnet 7 a.
And the opening and closing of the door 4 is detected.

The control means 8 controls the rotation of the motor 5 and the PTC heater 3. The signal control means 8a includes a microcomputer or the like. The switching means 8b controls the rotation of the motor 5 and the PTC heater 3. The switching means 8b comprises a current detecting means 8c for detecting the current of the heater 3 and a control board 8d on which circuit components are mounted. The switching means 8b controls the motor 5 by a power switching semiconductor 80 such as a bidirectional thyristor. , 8
1b, the PTC heater 3 is turned on and off. Then, the rotation speed is detected from the signal of the rotation detection means 6, and the power switching semiconductor 80 is controlled to control the rotating drum 1 to a predetermined rotation speed.

The input setting means 9 allows the user to start operation or set the operation stroke by operating a push button, and inputs the output to the signal control means 8a.

The first magnetic sensor 6b and the second magnetic sensor 7b are constituted by a reed switch, mounted on a control board 8d constituting a control means 8 attached to the main body, and provided with a first magnet 6a or a first magnet 6a. The proximity of the second magnet 7a is detected.
The magnetic shield plate 10 is made of an iron plate with little residual magnetism, and when the first magnet 6a approaches the second magnetic sensor 7b, it is erroneously detected that the door 4 is closed even though the door 4 is open. This prevents the door 4 from being erroneously detected as being open even though the door 4 is closed, and is configured to prevent magnetic mutual interference.

The control means 8 is operated and set by a special setting method which does not normally use the input setting means 9 so that the rotating drum 1 can be operated irrespective of the presence or absence of the detection signal of the open / close detection means 7
The operation of the rotary drum 1 is checked by operating and setting the input setting means 9 by a special setting method which does not normally use the input setting means 9. The operation of the rotary drum 1 can be controlled regardless of the presence or absence of the signal.

The operation of the above configuration will be described with reference to FIG. 3. Turning on the power in step 11 and starting, and in step 12, various initial settings are performed. Next, at step 13, the operation setting input of the input setting means 9 by the user is accepted, and at step 14, it is determined whether the operation setting input of the input setting means 9 is a special setting or a normal setting. If it is not a special setting in step 14, the process proceeds to step 15, and the normal operation program is executed.

If it is a special setting in step 14, it is determined that a failure or operation test has occurred, and in step 16, a setting input as to what kind of test is to be performed is accepted. In step 17, it is determined whether or not the rotation inspection service check of the rotary drum 1 is performed. If the rotation inspection service check of the rotary drum 1 is performed, in step 18, the motor 5 is forcibly energized regardless of whether the door 4 is opened or closed. Then, the rotating drum 1 is rotated. The rotation speed of the rotating drum 1 can be set in several steps from the lowest speed to the highest speed that can be controlled by operating the input setting means 9.

If it is determined in step 17 that the rotation inspection service of the rotary drum 1 has not been checked, in step 19 the door 4
The motor 5 or the PTC heater 3 is sequentially energized in step 20 according to the signal of the open / close detection means 7 to perform various failure inspections, and the inspection program ends in step 21.

As described above, according to the present embodiment, the rotation of the rotary drum 1 can be controlled with the door 4 opened without the need for a special jig for opening and closing the door 4, and the rotation state of the rotary drum 1 can be controlled. Can be inspected.

[0022]

As described above, the present invention provides a rotating drum for drying clothes, a blowing means for circulating warm air into the rotating drum, and a heating means provided on a blowing path to the rotating drum. A door for putting clothes into the rotating drum, a motor for rotating the blowing means or the rotating drum, an opening / closing detecting means for detecting opening / closing of the door, and starting or setting an operation stroke by operating a push button. comprising an input setting means capable of, and control means for controlling the rotational speed and the heating means of the motor, said control means, rotation de
An inspection process for checking the operation of the ram is provided.
The presence or absence of the detection signal of the opening / closing detection means.
Warazu by conventional by that operation setting a special configuration method that does not use the input setting unit, capable of controlling the pre-Symbol rotary drum
The above operation among a plurality of rotation speeds from the lowest speed to the highest speed
The operation is controlled at the rotation speed set by the setting , and the rotation status is checked.
In the inspection process, there is no need for a special jig such as a projection bar or a magnet that operates the open / close detection unit that detects the opening / closing of the door, and the rotating drum can be rotated with the door open. It is possible to check the rotation state of the rotating drum with the door open ,
With a special rotating drum inspection program, the rotating speed of the rotating drum can be controlled with the door open, and the rotating speed of the rotating drum can be controlled normally, or the rotating speed of the rotating drum can be controlled from low to high speed. It is possible to directly visually inspect whether or not the inspection is performed normally.

Further, since the open / close detecting means is composed of a magnet mounted on the door and a magnetic sensor for detecting the proximity of the magnet, the structure of the door open / close detecting means can be simplified, the number of parts can be reduced and the price can be reduced. it can.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a clothes dryer according to one embodiment of the present invention.

FIG. 2 is a system configuration diagram of the clothes dryer.

FIG. 3 is an operation flowchart of a main part of the clothes dryer.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating drum 2 heat exchange type double-wing fan (blowing means) 3 PTC heater (heating means) 4 door 5 motor 7 open / close detecting means 8 control means 9 input setting means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Akira Shoji, Inventor 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP 3-37098 (JP, A) 268600 (JP, A) JP-A-56-31793 (JP, A) JP-A-6-7574 (JP, A) JP-A-6-86900 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 1/00-58/28

Claims (2)

(57) [Claims] 1. A rotating drum for drying clothes, a blowing means for circulating warm air into the rotating drum, a heating means provided on a blowing path to the rotating drum, and charging the clothes into the rotating drum. A door that opens, a motor that rotationally drives the blower or the rotating drum, an open / close detector that detects opening and closing of the door, an input setting unit that can start operation or set an operation stroke by operating a push button, and the motor Control means for controlling the number of rotations and the heating means, wherein the control means checks the operation of the rotating drum.
Inspection step, wherein in the inspection step, the opening and closing
Regardless of the presence or absence of the detection signal of the detection means, to the normal that by the special configuration method that does not use operation setting of the input setting means
Ri, the previous Symbol rotating drum from the control can be the slowest to fastest
Of the plurality of rotation speeds set by the operation setting
A clothes dryer that can be operated and controlled by number to check the rotation status . 2. An opening / closing detecting means, comprising: a magnet mounted on a door;
The clothes dryer according to claim 1, further comprising a magnetic sensor that detects the proximity of the magnet.