JPS6332479B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary drum type clothes dryer, in which a drum seal in contact with the front wall of the drum is fixed to the front plate of the drum in an arc shape, thereby reducing the thrust of the front wall of the drum. By using a radial bearing and improving airtightness, it is possible to improve drying performance and prevent overheating of the heater.

The structure of the clothes dryer will be explained below with reference to FIG. Reference numeral 1 denotes a body that is the main body of the clothes dryer, and the front side thereof is covered with a front plate 3 having an input port 2 for loading and unloading clothes. A lid 4 for opening and closing the input port 2 is attached to the front plate 3. Reference numeral 5 denotes a cylindrical drum, which is supported around a horizontal axis so as to rotate and agitate the inserted clothing, and has a cylindrical flange 6 on the front wall and an outflow hole 7 on the rear wall. be. On the side of the outflow hole 7, a filter cover 9 having a filter 8 mounted thereon is coaxially engaged with a drum shaft 10 fixed to the center of the drum 5 in a detachable manner.
11 is a motor installed at the bottom of the body 1, and a drum pulley 1 is fixed to one end of the motor shaft.
A drum 5 is rotatably provided at 2 via a drum belt 13. Further, a fan 16 is rotated via a fan belt 15 to a motor pulley 14 fixed to the other end of the motor shaft. 17 is a shaft provided in the fan 16, and this shaft 17
A fan pulley 18 is fixed to the other end. The fan case 20 to which the bearing 19 supporting the shaft 17 is fixed corresponds to the fan case 21 and forms the casing of the fan 16, and the drum shaft 1
A drum bearing 22 that pivotally supports 0 is fixed, a ventilation hole 23 is provided, and the exhaust port guide 24 communicates with the outside. 25 is a heater, and a heater cover 26 forms a heating furnace.

Reference numeral 27 designates a drum front plate fixed to the front plate 3. A drum seal 28 for slidingly holding the flange portion 6 of the drum 5 is fixed to the outer periphery, an inlet 29 is provided in the heater 25 portion, and An intake port 30 is formed. Reference numeral 31 denotes a drum seal at the rear of the drum, which maintains airtightness between the fan case 21 and the drum 5.

In such a configuration, when the fan 16 rotates, the air taken in through the intake port 30 is heated by the heater 25, becomes hot air, flows into the drum 5, exchanges heat with the material to be dried, passes through the ventilation holes 23, and is exhausted. It is discharged from the mouth guide 24 to the outside.

Conventionally, a drum front plate 27 which is a fixed part and a cylindrical flange part 6 of the front wall part of the drum 5 which is a rotating sliding part are used.
The configuration is such that the drum seal 35 is as shown in FIG.
Since the drum front plate 27 was fixed to the outer periphery, if the drum 5 were to run out even slightly during rotation, the flange 3 would "stop" when the drum 5 was assembled and inserted.
6 is the tip 37 of the flange portion 6 of the front wall of the drum 5.
There is a possibility that the drums may come into contact with each other and cause scratching noise, and it is necessary to use the drum seal 31 at the rear of the drum to force movement during sliding. Furthermore, if the drum seal 35 is even slightly worn, a gap is created between the drum seal 35 and the flange portion 6, which reduces the amount of air passing through the heater 25, resulting in poor drying performance.
5 had the disadvantage of causing overheating. The present invention is an improvement on the conventional drum seal mounting structure in the above configuration, and an embodiment thereof will be described below with reference to FIG. 2.

An arcuate flange portion 32 is provided on the outer periphery of the substantially cylindrical drum front plate 27, and a drum seal 28, which is thinner than conventional drum seals, is fixed along the flange portion 32.
In this way, when assembling and inserting the drum 5, the circular arc portion 34 of the drum seal 28 becomes a "stop" for the drum, resulting in good workability. In addition, even if there is slight surface runout when the drum 5 rotates, the arc portion of the drum seal 28 absorbs the impact of the tip 33 of the cylindrical flange portion 6 on the front wall of the drum, thereby preventing the occurrence of scraping noise, etc. It can be prevented. Furthermore, even if the movement of the rear part of the drum 5 becomes large, the arc part of the drum seal 28 can absorb the play caused by this movement, and the drum seal 31 and the fan case 21 at the rear of the drum can be airtight. Can be held securely. Further, even if the drum seal 28 is slightly worn, the arc portion will not be worn, resulting in a structure in which gaps are less likely to form than in the past.

As described above, the present invention provides an arc-shaped edge on the outer periphery of the drum front plate, fixes a drum seal, which is a bearing, along this arc-shaped edge, and attaches it to the cylindrical flange of the drum front wall. By inscribing the drum seal surface, even if there is a rotational surface runout of the drum, the circular arc portion to which the drum seal is fixed acts as a "stop" for the drum, absorbing the impact of the cylindrical flange on the front wall of the drum. This makes it possible to prevent the occurrence of frictional noise. In addition, even if the sliding movement at the rear of the drum increases, the arc-shaped part of the drum seal can absorb the wobbling caused by the movement.Furthermore, even if the drum seal wears out slightly, the arc-shaped part will not wear out, so each drum seal Gaps are less likely to form in the forming part, improving airtightness, preventing overheating of the heater, improving drying efficiency, and providing stable quality and performance.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a clothes dryer, FIG. 2 is an enlarged sectional view showing a drum front support structure in an embodiment of the present invention, and FIG. 3 is an enlarged sectional view showing a conventional front support structure. ...Body, 5...Drum, 6...Cylindrical flange portion, 27...Drum front plate, 28...Drum seal, 32...Circular flange portion, 34...Circular arc portion.

Claims (1)

[Claims] 1 a body, a drum rotatably provided around a horizontal axis within the body, a drive device for rotating the drum, an intake passage for introducing air into the drum, and a discharge means for discharging the air. Equipped with
The cylindrical flange of the front wall of the drum serves as a rotating and sliding part, and the substantially cylindrical drum front plate inscribed in this flange serves as a bearing fixing part. Provides an arcuate edge,
A drum seal, which is a bearing, is fixed to the substantially cylindrical drum front plate along the arcuate edge, and the drum seal surface is inscribed in the cylindrical flange of the drum front wall. clothes dryer.