JPS6364240B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clothes dryer, and its purpose is to increase the air pressure inside the main body, heat the pressurized air filled in the main body by passing through a heater part, and dry the clothes. We have developed a product that can prevent the temperature of the bearing that supports the rotation of the drum from rising even if the filter at the lid opening becomes clogged when the material flows into the drum that stores and stirs the material, exchanges heat with the material to be dried, and then exhausts the product. This is what we are trying to do.

In a conventional clothes dryer, a shaft 20 is fixed to the center of a rear plate 6 of a rotary drum, and a bearing 24 for rotationally supporting the shaft is fixed to the center of a heater mounting plate 21 located behind the rear plate 6. In addition, by fixing the drum holder fixed to the heater mounting plate 21 to the main body of the device, the rotating drum is rotatably attached to the main body. In addition, as an air distribution route,
The main body of the device was connected to the surrounding area through the ventilation hole in the rear plate 6 of the drum and the exhaust hole in the lid, so the air inside the main body was raised higher than the surroundings by using the fan to flow the surrounding air through the intake filter and into the main body of the device. On the other hand, since the inside of the drum was at the same pressure level as the surrounding area, the air inside the device body would flow into the drum. However, in the case of this structure, the air after exchanging heat with the material to be dried in the drum is discharged through the exhaust hole in the lid of the drum and the filter, but the dust that has adhered to the material to be dried is absorbed into the filter. Therefore, if the exhaust passage becomes clogged, the exhaust passage leading to the surrounding area will be blocked, and the hot air will not be exhausted smoothly. As a result, the rear plate 6 of the drum and the heater mounting plate 2
1, the influence of hot air convection etc. appears greatly,
Due to the tight circulation of hot air between these areas, the influence of the radiant heat from the heater is large, and the temperature of the bearing increases.
The bearing part becomes easily damaged.

The present invention eliminates the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings. In the figure, 1 is a main body, which is hermetically sealed with a front body 2 and a back plate 3 to form the main body of the device. 4 is a rotating drum made of a cylindrical body;
It is provided within the device body and has a front plate 5 and a rear plate 6. 7 is a clothes slot provided on the front body 2;
It has a circular flange 9 with a packing 8 attached to its inner periphery. Reference numeral 10 denotes a lid for the clothes input port 7, and the circular protrusion 11 on the inner surface side can be brought into contact with the packing 9 to seal the clothes input port 7. 12 is the lid 10
13 is a filter 14
The filter cover houses the filter cover and covers the exhaust hole 12 by detachably attaching it to the lid 10. Reference numeral 15 denotes a drum front plate, which is fixed to the front body 2 so that a circular flange 16 formed on the drum front plate 15 is concentric with the clothes input port 7. 17
A circular aperture plate 18 formed in the front plate 5 is slidably supported by a plurality of drum atetaters attached to a circular flange 16. 19 is a plurality of ventilation holes provided at the upper and lower parts of the rear plate of the rotating drum; 20 is a shaft fixed to the center of the rear plate; 21 is a heater mounting plate provided at the rear of the rear plate 6; A heater 23 is attached approximately in a circumferential manner. 24 is a bearing fixed to the center of the heater mounting plate 23, and the shaft 20
It supports rotation. A plurality of ventilation holes 25 are provided in the heater mounting plate 23 so as to surround the bearing 24.

The rear plate 6 of the drum 4 has the shaft 20 fixed part protruding rearward, and the distance between the heater mounting plate 23 and the rear plate 6 is such that the ventilation hole 19 through which air flows into the drum 4 and the periphery of the bearing 24 are arranged such that the distance between the heater mounting plate 23 and the rear plate 6 is such that Pass through and heater mounting plate 2
3 and the back plate 3 and is set longer than the blow hole 25 portion which flows between the heater mounting plate 23 and the rear plate 6. A drum holder 26 is fixed to the heater mounting plate 23, and by being fixed to the main body 1, the drum 4 is rotatably supported on the main body of the device. 27 is a drive motor, which has a drum pulley 28 at one end of its rotating shaft, and which connects the drum 4 via a V-belt.
is rotating. Reference numeral 29 denotes a fan fixed to the other end of the motor rotating shaft, which takes in air from the intake port 3 at the lower part of the front body 2 through the intake filter 31 to raise the air pressure inside the device body above the ambient air.

In the above configuration, the air flow flows from the outer edge of the heater mounting plate 23, passes through the heater portion, and flows into the drum 4 through the ventilation hole 19, and the air flow flows through the ventilation hole 32 provided around the bearing 24 portion. It flows between the rear plate 6 of the drum 4 and the heater mounting plate 23,
A flow of air is created which flows into the drum 4 towards the ventilation holes 19. Air flow is through heater mounting plate 23
It branches at the outer periphery of the back plate 3 and the heater mounting plate 23.
By ensuring a substantially uniform distance between the air vents 25 and the outer periphery of the heater mounting plate 23, pressurized air is secured in the same way between the air vents 25 and the outer periphery of the heater mounting plate 23, and a flow from the air vents 25 to the ventilation holes 19 is ensured. The flow of the part is the heater mounting plate 2.
Compared to the flow between the outer periphery of drum 3 and drum 4, the flow rate is smaller, but the flow is faster. Therefore, the cold air sucked into the main body of the device from the surroundings passes through the bearing portion, thereby cooling the bearing 24 and reducing the temperature rise.

As described above, according to the present invention, it is possible to prevent the temperature rise of the bearing part even if the material is generally used for bearings, such as sintered alloys and oil-impregnated plastics, which significantly shorten the service life due to temperature rise. ,
Damage to equipment can be prevented, and its practical effects are great.

[Brief explanation of drawings]

Fig. 1 is an overall vertical sectional view showing an embodiment of a clothes dryer according to the present invention, Fig. 2 is an enlarged sectional view of the bearing section in Fig. 1, and Fig. 3 is an enlarged sectional view of the bearing section of a conventional product. be. 1... Main body, 2... Front body, 3... Back plate, 4... Drum, 5... Front plate, 6... Rear plate, 7
...Clothing slot, 19...Vent hole, 20...Shaft, 21...Heater mounting plate, 24...Bearing, 2
5...Vent hole.

Claims (1)

[Claims] 1. Air pressurization that increases the air pressure inside the main body above the ambient air pressure by blowing air into the main body from the air intake port of the main body into the main body of the clothes dryer, which is made up of a front body, a main body, and a back plate that are airtightly connected to each other. A substantially cylindrical cylinder having a pressure device, configured to discharge pressurized air filled in the main body from an exhaust port through a drum, and comprising a rear plate having a plurality of ventilation holes and a front plate having a circular opening. A heating device for heating the air entering the drum on the outer periphery of a heater mounting plate disposed at the rear of the rear plate, wherein the drum is loosely fitted into the circular opening of the front body through the circular opening of the front plate. and a bearing is provided in the center of the heater mounting plate, a plurality of ventilation holes are provided near the periphery of the bearing, a shaft fixed to the rear plate is rotatably supported by the bearing, and the The distance between the rear plate and the heater mounting plate is set to be longer than the ventilation hole portion and the air blowing hole portion, and the distance between the heater mounting plate and the back plate is arranged so that the outer circumferential portion and the air blowing hole portion are approximately equal. A clothes dryer comprising a drive device that rotates the drum.