JPS635799A - 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 comprises suitable drum rotation speed and fan rotation speed,
This invention relates to a rotary drum type clothes dryer that can be configured compactly.

Conventional technology Conventional clothes dryers generally use a 4-pole motor, and if the fan is attached directly to the motor shaft, the number of rotations will be insufficient.
In order to obtain an appropriate fan air volume, a large fan is required, leading to an increase in the size of the equipment. For this reason, the conventional product
As shown in the figure, a fan 28 is formed at the rear of the drum 26 in correspondence with the ventilation hole 27 of the drum back plate, and a pulley 30 is provided on the rotating shaft of the motor 28 and a pulley 3 is provided on the fan shaft.
The rotational force of the motor 29 is transmitted to the fan 28 via a belt 32 stretched between the motor 29 and the fan 28 . A belt 35 wound around the outer periphery of the drum 2B is applied to a pulley 33 provided at the other end of the motor shaft via a tension pulley 34.

Problems to be Solved by the Invention In the conventional clothes dryer as described above, since the fan is installed on the back of the drum, a dedicated bearing for the fan is required, and the depth of the drum becomes longer, making the entire device larger. There is. Furthermore, if a two-pole motor is used as the motor and the number of revolutions is increased, the drum will rotate too quickly, making it impossible to obtain an appropriate number of revolutions.

The present invention provides a clothes dryer that can use a small motor that can rotate at high speed, and that can obtain the necessary fan air volume and appropriate drum rotation speed.

Means for Solving the Problems In order to achieve the above object, the present invention has a drum rotatably housed in an outer box having an opening/closing door on the front, and a heater that blows hot air into the drum and a heater that blows steam inside the drum. A blower fan is provided at one end of the rotating shaft of a motor that rotates the drum, and a drum driving bobber and a deceleration mechanism that decelerates the drum driving pulley are arranged concentrically on the rotating shaft of the motor. This is what I did.

By directly connecting a small fan to the motor shaft installed below the working drum, and arranging the speed reduction mechanism and the booster on the same axis as the motor shaft, the device can be made more compact. The drum, to which the necessary air volume is obtained and the motor rotational force is transmitted via the speed reduction mechanism, can obtain appropriate rotation without rotating too quickly.

Embodiment 1 has a cylindrical drum installed inside the outer box, and 2 is the front plate of the outer box, which has an opening for entering and exiting clothing with an opening/closing door 3 attached by a hinge or the like. A support plate 4 forms an exhaust path between it and the back plate 5 of the outer box, and supports the shaft 6 on the back side of the drum 1.

Reference numeral 7 denotes a large number of ventilation holes provided on the back plate of the drum, and the support plate 4 has ventilation holes 8 provided at positions corresponding to the ventilation holes 7. 9 is an exhaust port provided on the top surface of the outer box, which is similar to the ventilation hole 7.8.
It communicates with 10 is a filter provided in the drum l corresponding to the ventilation hole 7, 11 is a filter cover for preventing contact between the filter lO and clothing, etc., and 12 is a ring-shaped member that is fitted inside the outer box along the front opening. Fixed. Reference numeral 13 denotes a receiving member that supports the front side of the drum, and is attached to the ring-shaped member 12. Reference numeral 14 denotes a heater provided inside the outer box on the front side of the drum, and corresponds to a hot air opening provided in the ring-shaped member 12. Reference numeral 15 is a motor provided at the lower part of the outer box through a mounting plate 18, and reference numeral 17 is a fan for blowing air to the heater 14, which is connected to one rotating shaft of the motor 15. Reference numeral 18 denotes a pulley pivotally supported by the other rotating shaft of the motor 15, and a reduction mechanism 19.
are connected through. A belt 20 is stretched around the pulley 18 and the outer periphery of the drum 1, and a tension pulley 21 maintains an appropriate tension.

As shown in FIG. 2, the speed reduction mechanism 19 is mounted on the motor mounting plate 1B.
The gear case 22 fixed to the motor shaft, the sun gear 23 fitted and fixed to the motor shaft, and the sun gear 23 inside the gear case 22.
It consists of a planetary gear 24 that meshes with the planetary gear 24 and a holding plate 25 that holds the planetary gear 24, and the pulley 18 is attached to the holding plate 25.
It is attached so that it can rotate.

Store clothes etc. in the rotating drum 1, close the door 3, and turn the motor 1 on.
When 5 is energized, 7'-0 and 18 are
is driven, the drum 1 is rotated by the belt 20, and the clothes in the drum 1 are tamped. At the same time, a fan 17 directly connected to the shaft of the motor 15 rotates, and the air flow generated by the fan 17 passes through the heater 14 and becomes heated air, which enters the drum 1 through the hot air opening of the ring-shaped member 12, and heats and dries the clothes in the drum. It passes through a filter 10 provided on the rear surface of the drum 1, a ventilation hole 7, and a ventilation hole 8 of the support plate 4, and is discharged to the outside of the machine from an exhaust port 9, thereby drying the clothes inside the drum 1.

In this drying operation, the rotational force of the motor causes the pulley 18 to rotate at a reduced speed by the planetary gear 24 of the speed reduction mechanism, thereby preventing the drum from rotating at a speed higher than necessary.

Note that the speed reduction mechanism is not limited to the one shown in Figure 2, and other mechanisms may be used.Moreover, the motor may be of any type depending on the desired drying function, such as a two-pole induction motor that can rotate at high speed. A motor can also be used.

Effects of the Invention Since the present invention has the above-described structure and operation, even if a high-speed rotating motor is used, the rotation of the pulley can be decelerated to an appropriate rotational speed, so that the drum can be rotated at a good speed. In addition, by directly connecting a small fan to one of the motor shafts of the high-speed motor and placing a boob on the other side of the motor shaft via a speed reduction mechanism, the space inside the outer box below the drum can be fully utilized. By shortening the depth dimension, the dryer can be made smaller.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a clothes dryer according to the present invention, FIG. 2 is a cross-sectional view of the speed reduction mechanism used in FIG. 1, and FIG.
The figure is a sectional view of a conventional example. l...Drum 15...Motor 17...Fan 19...Deceleration mechanism

Claims (1)

[Claims] The drum is rotatably housed in an outer box with an opening/closing door on the front, and is equipped with a heater that blows hot air into the drum and an exhaust hole that exhausts steam inside the drum. A clothes dryer characterized in that a blower fan is provided at one end, and a drum drive pulley and a deceleration mechanism for decelerating the drum drive pulley are concentrically disposed on the rotating shaft of the motor.