JPH0747117Y2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electric clothes dryer.

[Conventional technology]

An example of a clothes dryer is shown in FIG. 4, FIG. 5 and FIG.
In the figure, (1) is the body front plate (22), the body side plate (23), the top plate (2
It is a copper outer box consisting of 4).

A door (2) for putting in and out clothes to be dried is attached to the body front plate (22) of the outer box (11), and a motor (3) is attached to one side of the top plate (24) of the outer box (1). A rotary drum (4), which is a drying chamber that is hung and supported by a plate (18) and is rotated by the motor (3), is arranged in the central portion of the outer box (1).

Then, the rotary shaft of the motor (3) and the rotary shaft of the double-blade fan (5) provided behind the exhaust hole on the rear surface of the rotary drum (4) are passed through the pulleys (15) (16) through the belt (6). ) To connect.

Further, the belt (14) is wound around the other pulley (13) provided on the rotation shaft of the motor (3) and the outer circumference of the rotating drum (4).

A filter (7) detachable from the front opening of the rotary drum (4) is provided in the exhaust hole on the rear surface of the rotary drum (4).

The outer periphery of the double-blade fan (5) is sealed by a felt-like sealing material (8) in a state where its rotation is not hindered, and as a result, a compartment in which air does not interact between the front surface and the rear surface of the double-blade fan (5). Becomes

An intake port (9) for taking in outside air for cooling is provided on the back surface of the outer box (1), and a drain port (10) for discharging the water removed from the material to be dried is provided on the lower surface, and the rotating drum (4) A semiconductor heater (11) such as a PTC heater is arranged at the lower front side of the outer box (1) as a front position of the.

Below the front door (2) of the outer box (1), an operation panel (12) having a control switch for setting the drying operation time and the like and a progress display section for displaying the progress of the drying operation is provided.
A control board incorporating a display lamp, a microcomputer, and other electronic parts is mounted in the operation panel (12).

In this way, in order to carry out the drying operation, the door (2) is opened, the clothes to be dried, which is a dried substance, are put into the rotating drum (4), and the drying time and the drying time are controlled by the control switch on the operation panel (12). When the degree of dryness is set, the motor (3) is energized and rotates. As a result, the rotation of the rotary drum (4) is started by the belt (14), and at the same time, the rotation of the motor (3) is transmitted to the two-blade fan (5) via the belt (6) and is rotated. Also, the heater (11) is energized,
This produces heat.

Then, the air in the outer box (1) is heated by the heater (11) by the rotation of the double-blade fan (5) and becomes hot air which is dried and is sent into the rotating drum (4) and applied to the object to be dried. As a result, the object to be dried is heated, and the hot air contains the moisture evaporated from the object to be dried, and the moist warm air is taken in through the intake port (9) and exits from the exhaust port. ) Through indirect contact. In this way, the double-blade fan (5) exerts the function of a heat exchanger, and the warm air is cooled by cold outside air, whereby water is removed and again sent to the heater (11) and removed. Moisture is discharged from the drain port (10) to the outside of the outer box (1), and this circulation is repeated to perform the drying operation.

[Problems to be solved by the device]

In this way, the motor (3) is suspended from the top plate (24) by the side of the rotating drum (4) that occupies a large amount in the outer box (1), and this motor when the motor (3) is rotated. The vibration generated from (3) is directly transmitted to the top plate (24) through the mounting plate (18).

In addition, due to the delicate eccentricity of the rotating drum (4), the load received by the motor (3) from the rotating drum (4) via the belt (14) also changes, and the fluctuating vibration thereof also causes the top plate (24). Be transmitted to.

As shown in FIG. 7, the top plate (24) is provided with a plurality of rectangular beads (25) arranged side by side in the length direction of the top plate (24). The frequency was set to about twice the frequency of the motor (3) [100Hz when the motor frequency is 50Hz, 120H when it is 60Hz.
z].

As a result, there is a drawback that resonance occurs and a loud sound is generated from the top plate (24).

An object of the present invention is to provide a clothes dryer which eliminates the inconvenience of the conventional example, minimizes the generation of sound from the top plate of the outer box, and makes the sound quiet.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the clothes dryer in which a motor for driving a rotating drum is suspended from the top plate of the outer box in the outer box, the present invention is designed to absorb vibrations in the horizontal and vertical directions at the same time. The gist of the present invention is to provide a plurality of beads in the length direction on the top plate, and further provide a V-shaped bead so as to straddle the beads.

[Action]

According to the present invention, the top plate of the outer box that suspends and supports the motor has a bead provided in the longitudinal direction and a V-shaped bead additionally formed so that its natural frequency is only twice the motor frequency. However, it is possible to avoid the frequency bands of 3 times, 4 times, and 5 times.

In addition, the vibrations in the horizontal and vertical directions are absorbed at the same time.

In this way, the resonance between the motor and the top plate disappears,
It is possible to suppress the generation of sound from the top plate.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an essential part showing one embodiment of the clothes dryer of the present invention, which is a steel outer box (1) made up of a front plate (22), a side plate (23) and a top plate (24). The part of the top plate (24) is shown.

Since the internal mechanism is the same as that already described with reference to FIGS. 4, 5, and 6, detailed description thereof will be omitted.

The top plate (24) is provided with a plurality of rectangular beads (25), which are arranged in the length direction of the top plate (24) as in the conventional case, but the present invention further includes these beads (25). A V-shaped bead (26) is provided so as to extend over.

The reason why the bead (26) is V-shaped is the result of considering that vibrations in the horizontal and vertical directions are absorbed at the same time, and it should be provided so as to overlap the conventional rectangular bead (25). This is the result.

In the present invention, such a rectangular bead (2
By providing 5) and the V-shaped beads (26), the following top plate (24) can be obtained.

FIGS. 8 and 9 show the conventional vibration distribution of the top plate (24). When FIG. 8 is 100 Hz, FIG. 9 is 120 Hz.
Is the case.

As described above, the vibration distribution of the top plate (24) is different between 100 Hz and 120 Hz, but the top plate (24) is provided by providing not only the rectangular bead (25) but also the V-shaped bead (26). Second
The vibration distribution shown in FIG. 3 and FIG. 3 is obtained.

[Effect of device]

As described above, the clothes dryer of the present invention is a clothes dryer in which the motor for driving the rotating drum is suspended from the top plate of the outer box in the outer box. Not only 2 times but also 3 times, 4 times and 5 times frequency bands can be avoided, and in the lateral direction,
Since it absorbs vibrations in the vertical direction at the same time, resonance between the motor and the top plate is eliminated, and the sound from the top plate can be suppressed and the sound can be made quiet.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing one embodiment of a clothes dryer of the present invention, FIGS. 2 and 3 are vibration distribution diagrams of a top plate of the present invention, and FIG. 4 is an overall perspective view of the clothes dryer. 5 and 5 are longitudinal side views of the same as above, FIG. 6 is a rear view of the same as above, FIG. 7 is a perspective view showing a conventional example, and FIGS. 8 and 9 are vibration distribution diagrams of a top plate in the conventional example. (1) ... Outer box, (2) ... Door (3) ... Motor, (4) ... Rotating drum (5) ... Double-blade fan, (6) ... Belt (7) ... Filter, (8) ... Seal material (9) )… Intake port, (10)… Drain port (11)… Heater, (12)… Operation panel (13) (15) (16)… Pulley (14)… Belt, (18)… Mounting plate (22)… Front plate of the torso, (23)… Side plate of the torso (24)… Top plate, (25)… Bead (26)… V-shaped bead

Claims (1)

[Scope of utility model registration request] 1. In a clothes dryer in which a motor for driving a rotary drum is suspended from a top plate of the outer box in the outer box, the top plate is long so as to simultaneously absorb horizontal and vertical vibrations. A clothes dryer characterized in that a plurality of beads are provided in the vertical direction, and a V-shaped bead is provided so as to straddle the beads.