JPH06126094A - Clothing dryer - Google Patents

Abstract

PURPOSE:To provide a highly reliable clothing dryer preventing the increase of slide resistance due to the accumulation of dust or yarn refuse in the slide part of a drum support and a drum. CONSTITUTION:In a clothing dryer wherein a drum 6 is supported in a freely rotatable manner by an annular drum support plate 4 having a clothing throwing port and a rear bearing and the drive means of the drum and a means sending hot air to the drum are provided, an airtightness holding member 5 is provided to the single side of the slide surface of the flange part 7 of the drum 6 and the annular drum support plate 4 and one or more round 7a is provided to the other side of the slide surface. The round hole 7a has a rising part 7b forming an R curved surface with respect to the slide surface formed thereto on the side opposite to the airtightness holding member 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer, and more particularly to improvement of a drum support portion.

[0002]

2. Description of the Related Art Conventionally, a general clothes dryer has a drum in an outer frame, an annular drum support plate having a clothes inlet,
It is rotatably supported by a rear bearing provided on the rear of the outer frame,
The drum support plate and the drum are kept airtight, and a heater and a blower for sending warm air into the drum are provided, and the blower and the transmission for driving the drum and an electric motor are provided. It will be.

The airtightness maintaining means at the sliding portion between the drum supporting plate and the drum in the clothes dryer will be described with reference to FIG. FIG. 3 is a sectional view of an essential part of a sliding portion between a drum support plate and a drum in a conventional clothes dryer.
In FIG. 3, 4 is an annular drum support plate, 6 is a drum,
Reference numeral 7 is a flange portion of the drum 6, and 5 is an airtight holding member provided at a sliding portion between the drum support plate 4 and the flange portion 7 of the drum. That is, to prevent the air in the drum 6 from leaking,
The airtight retainer 5 such as a nonwoven fabric is attached to one of the sliding surfaces of the drum support plate 4 and the flange portion 7 of the drum.

[0004]

According to the above-mentioned prior art, as the clothes dryer is used, dust and lint from the clothes being dried adhere to the airtight holder 5 and are gradually accumulated. There is a problem that the sliding resistance between the flange 7 of the drum and the drum support 4 increases. Therefore, it is necessary to increase the starting torque of the motor in consideration of when the sliding resistance becomes large, which causes a problem of increasing the size and cost of the motor. If the above measures are not taken, there will be a problem that the torque of the motor is insufficient and the drum is locked at the start of operation or during operation.

Therefore, in order to prevent dust from entering the sliding portion between the drum support and the drum, for example, in the clothes dryer described in Japanese Patent Laid-Open No. 63-54199, the drum support and the drum. A bearing member is provided in a sliding portion of the bearing member, and a plurality of grooves, particularly inclined grooves are provided on the sliding surface of the bearing member along the rotation direction of the drum. As a result, even if dust enters the surface of the bearing material, it does not adhere and falls into the groove. However, in this case, even if the dust does not fall into the drum, it remains in the groove, so that special consideration must be given to the maintenance of the bearing material.

The present invention has been made to solve the above-mentioned problems of the prior art, and prevents an increase in sliding resistance due to accumulation of dust, lint, etc. at the sliding portion between the drum support and the drum. The purpose is to provide a reliable clothes dryer.

[0007]

In order to achieve the above object, the structure of a clothes dryer according to the present invention has a drum in an outer frame, an annular drum support plate having a clothes inlet, and a rear part of the outer frame. Rotatably supported by a rear bearing provided on the drum support, airtightness holding means is provided at a sliding portion between the drum support plate and the drum, drive means for the drum, and means for sending warm air to the drum. In the clothes dryer, the airtight retainer is provided on one side of the sliding surface between the flange portion of the drum and the annular drum support plate, and one or more openings are provided on the other side. .

More specifically, the opening is a circular hole formed in the flange of the drum, and the circular hole forms a rising portion that forms an R curved surface with the sliding surface on the side opposite to the airtight holder. It will be.

[0009]

The function of the above technical means is as follows. Dust and lint attached during use of the clothes dryer are peeled off from the airtight holder and discharged from the circular hole. Therefore,
Since dust and lint do not accumulate and accumulate on the airtight retainer, there is no need to increase the starting torque of the motor, which was a problem in the conventional technology, to a value higher than that required at the time of initial use. There is no need to worry about the operation being stopped due to drum lock.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a partially cutaway explanatory view showing the entire structure of a clothes dryer according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a portion A in FIG. In FIG. 1, 1 is an outer frame of a dryer, 2 is a door that covers a clothes inlet 3 and can be opened and closed, 4 has a clothes inlet 3 in the center, and is an annular shape fixed to the front surface of the outer frame 1. This drum support 4
A non-woven fabric airtight retainer 5 is attached to the outer peripheral portion of the.

Reference numeral 6 denotes a drum which is a drying chamber inside the outer frame 1, and the drum 6 is rotatably supported by a drum support plate 4 and a rear bearing 18 provided at a rear portion of the outer frame.
A flange portion 7 is formed on the front surface of the drum 6 so as to be fitted to the airtight holding body 5 attached to the outer circumference of the drum support body 4. As shown in FIG. 2, one or more circular holes 7a related to the opening are formed in the flange portion 7, and a rising portion 7b is provided in the direction opposite to the airtight holding body 5 and is perpendicular to the sliding surface. It is configured to form an R curved surface in the direction.

A drum 6 is provided below the drum support 4.
There is a heater 8 for sending warm air inside, and a blower device 9 is further provided at the rear part of the drum. The blower device 9 and the drum 6 are provided.
Belt 10 and fan belt 11 for driving
And an electric motor 12. 13 is a power switch,
Reference numeral 14 is a drum exhaust port, 15 is a circulation duct, 16 is a drain port, 17 is a drying temperature detecting device, and 19 is a lint collector.

Next, the operation of the clothes dryer having such a structure will be described. When the power switch 13 is turned on, the electric motor 12 is driven and, via the drum belt 10 and the fan belt 11, the drum 6 containing the clothes to be dried is stored.
And the air blower 9 rotates. As a result, the air in the drum 6 is sucked into the air blower 9 through the drum exhaust port 14, passes through the circulation duct 15 and is sent to the heater 8, where it is heated and becomes hot air and is circulated in the drum 6.

This warm air evaporates the water content of the material to be dried,
The evaporated hot and humid air is heat-exchanged by the air blower 9 to become water, and is discharged from the drainage port 16 to the outside of the dryer to dry the material to be dried. When the drying progresses gradually and the dryness detection device 17 that is signal-connected to the control device (not shown) detects that the object to be dried is dried, the cold air operation is performed and then the electric motor 13 is performed. ,
The heater 8 is controlled to stop.

During the above operation, most of the dust and lint generated by the stirring action of the drum 6 is collected by the lint collector 12, but a part of the dust and lint adheres to the airtight retainer 5 and the number of times of operation is reduced. It accumulates gradually as it is piled up. However, since the flange portion 7 formed on the drum 6 and the airtight holding body 5 attached to the drum support body 5 are always in a sliding state, the circular hole 7a formed in the flange portion 7 is formed. To remove dust and lint from the circular hole 7
It will be discharged from a. According to the present embodiment, since the circular hole 7a is formed with the rising portion 7b forming an R curved surface in the direction opposite to the airtight holding body 5 in the direction perpendicular to the sliding surface,
Care is taken not to cause significant wear even if the drum 6 is rotated for a long time.

According to the present embodiment, since the dust and lint attached to the airtight holding member 5 during the use of the dryer are discharged from the circular hole 7a while the drum 6 is rotating, the dust and lint are removed. Is not accumulated in the airtight retainer 5, and sliding resistance between the flange portion 7 of the drum 6 and the drum support 4 does not increase. Therefore, it is not necessary to make the starting torque of the motor larger than a value required at the time of initial use, there is no problem of cost increase, and there is no fear of operation stop during drying due to drum lock. Further, since the circular hole 7a is provided with the rising portion 7b constituted by the R curved surface in the direction perpendicular to the sliding surface, the airtight holding body 5 is not abnormally worn during sliding.

Further, in the clothes dryer described in Japanese Patent Application Laid-Open No. 63-54199 described above as a prior art, a plurality of grooves are provided on the sliding surface of the bearing material along the rotation direction of the drum to form a bearing. The dust that has entered the surface of the material was dropped into the groove and accumulated in the groove, whereas in the present embodiment, dust and lint are discharged to the outside without accumulating in the airtight retainer 5,
The life of the airtight retainer 5 can be extended, which is also advantageous in terms of maintenance.

In the above embodiment, the airtight retainer 5 is attached to the drum support 4 side and the circular hole 7A is provided on the flange portion 7 side of the drum 6, but the present invention is not limited to this. Alternatively, it is possible to attach the airtight retainer 5 to the flange portion 7 side and provide a circular hole on the drum support 4 side. In this case, a sliding surface between the airtight retainer 5 and the drum support 4 is provided. It is possible to prevent dust and lint from accumulating on the surface. Further, the opening is not limited to the circular hole, and other shapes such as an ellipse or a square can also be effective.

[0019]

As described above in detail, according to the present invention, it is possible to prevent an increase in the sliding resistance due to the accumulation of dust, lint, etc. at the sliding portion between the drum support and the drum, and to improve the reliability. A high clothes dryer can be provided.

[Brief description of drawings]

FIG. 1 is a partially cutaway explanatory view showing an overall configuration of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of part A in FIG.

FIG. 3 is a sectional view of an essential part of a sliding portion between a drum support plate and a drum in a conventional clothes dryer.

[Explanation of symbols]

 1 Outer Frame 3 Clothing Inlet 4 Drum Support 5 Airtight Holder 6 Drum 7 Flange 7a Circular Hole 7b Rise 8 Heater 9 Blower 12 Electric Motor 18 Rear Bearing

Claims (2)

[Claims] 1. A drum in an outer frame is rotatably supported by an annular drum support plate having a clothes insertion port and a rear bearing provided at the rear part of the outer frame, and the drum support plate slides on the drum. In the clothes dryer, which is provided with an airtight holding means in its part, and a driving means for the drum and a means for sending warm air to the drum, sliding between the flange portion of the drum and the annular drum support plate. A clothes dryer, comprising an airtight retainer on one side of the surface and one or more openings on the other side. 2. The opening is a circular hole formed in the flange of the drum, and the circular hole has a rising portion which forms an R curved surface with the sliding surface on the side opposite to the airtight holding member. The clothes dryer according to claim 1, wherein: