JPH09225197A - Clothing drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to maintain the smooth rotation of a drum without increasing the sliding resistance between the drum and a supporting material for supporting the opening of the drum. SOLUTION: An annular sealing material is interposed between the inner peripheral edge of the opening of the drum and the peripheral surface of the drum supporting disk. This sealing material consists of an upper sealing material occupying 3/10 of the entire periphery and a lower sealing material 36 occupying 7/10 of the entire periphery. The lower sealing material 36 consists of a felt material 36a of 100% polyester fibers having about 3.1mm thickness and a waterproof sheet 36b covering the sliding contact surface of this felt material 36a with the inner peripheral edge of the opening of the drum and is stuck to the peripheral surface 11a of the drum supplying disk 11. The waterproof sheet 36b is formed by subjecting a nonwoven fabric of 100% polyester fibers having about 0.1mm thickness and having the meshes finer than the meshes of the felt material 36a to waterproofing by fluorine coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type clothes dryer.

[0002]

2. Description of the Related Art Conventionally, in a drum type clothes dryer,
There is a structure in which a horizontal shaft type drum that accommodates clothes is rotatably supported in a housing by supporting a front opening of the drum with a drum support plate. The drum support plate has a peripheral surface facing the inner peripheral edge of the front opening, and the peripheral surface supports the inner peripheral edge of the opening. A felt material is interposed as a sealing material between the inner peripheral edge of the opening and the peripheral surface, and the felt material is attached to the peripheral surface with an adhesive or the like, and is in sliding contact with the inner peripheral edge of the opening. ing. Such a clothes dryer is disclosed in, for example, JP-A-3-21229.
No. 5 (D06F58 / 04).

[0003]

However, in such a clothes dryer, the dry air (steam) which has absorbed moisture from the clothes in the drum is in sliding contact with the inner peripheral edge of the opening of the drum of the felt material. It penetrated into the felt material from the inside, and the felt material easily absorbed water and expanded. Then, the felt material expands, so that the sliding resistance between the felt material and the inner peripheral edge of the opening of the drum increases, and the rotation speed of the drum decreases, which may hinder the drying operation.

The present invention relates to a clothes dryer and solves such problems.

[0005]

According to a first aspect of the present invention, there is provided:
A horizontal axis type drum housed in the housing and having an opening on at least one of the front and rear surfaces, and a peripheral surface facing the opening inner peripheral edge of the drum, and the peripheral inner surface supporting the opening inner peripheral edge. Is interposed between the support member that rotatably supports the drum and the inner peripheral edge of the opening and the peripheral surface, and is attached to one side of the inner peripheral edge of the opening or the peripheral surface and is in sliding contact with the other side. In a clothes dryer provided with a felt material, a sliding contact surface of the felt material with the other side is covered with a waterproof layer for preventing water vapor from entering the felt material from the sliding contact surface.

The waterproof layer is a waterproof sheet obtained by waterproofing a cloth finer than the felt material.

[0007] In the above-mentioned structure, the water vapor discharged from the inside of the drum is less likely to enter the inside of the felt material from the sliding contact surface, so that the expansion of the felt material is suppressed.

A second structure of the present invention has a horizontal shaft type drum housed in a housing and having an opening on at least one of the front and rear surfaces, and a peripheral surface facing the inner peripheral edge of the opening of the drum. A support member that rotatably supports the drum by supporting the inner peripheral edge of the opening with this peripheral surface, and is interposed between the inner peripheral edge of the opening and the peripheral surface, and is either the inner peripheral edge of the opening or the peripheral surface. In a clothes dryer equipped with a felt material that is attached to one side and is in sliding contact with the other side, the friction contact surface of the felt material with the other side has a low friction that reduces sliding resistance with the other side. It is covered with layers.

The low friction layer is a Teflon sheet. With the above configuration, it is possible to prevent the sliding resistance from increasing even if the felt material expands.

A third structure of the present invention has a horizontal shaft type drum housed in a housing and having an opening in at least one of the front and rear surfaces, and a peripheral surface facing the inner peripheral edge of the opening of the drum. A support member that rotatably supports the drum by supporting the inner peripheral edge of the opening with this peripheral surface, and is interposed between the inner peripheral edge of the opening and the peripheral surface, and is either the inner peripheral edge of the opening or the peripheral surface. In a clothes dryer equipped with a felt material attached to one side and slidingly contacting the other side, the sliding contact surface of the felt material with the other side is made to penetrate the water vapor into the felt material from the sliding contact surface. And a waterproof and low-friction layer that prevents the above-mentioned and reduces the sliding resistance with the other side.

The waterproof and low friction layer is a Teflon sheet. In the above-mentioned configuration, the water vapor emitted from the inside of the drum is less likely to enter the inside of the felt material from the sliding contact surface, so that the expansion of the felt material is suppressed and the sliding resistance increases even if the felt material expands to some extent. Can be suppressed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

First, the first embodiment of the present invention will be described. In FIG. 1, reference numeral 1 is a clothes dryer according to the first embodiment of the present invention. Reference numeral 2 denotes a housing, which is a metal machine frame 3 having front and rear surfaces opened, a metal front plate 4 covering the front surface of the machine frame 3, and a metal rear plate 5 covering a rear surface of the machine frame 3. Consists of The front plate 4 is provided with a clothing inlet 6.

Reference numeral 7 denotes a horizontal shaft type drum having an opening in the front face provided in the housing 2, and a rear part thereof is rotatably supported by a support shaft 8. Reference numeral 11 denotes a metal drum support board which is provided on the back side of the front plate 4 and outside the input port 6, and which supports the front opening of the drum 7. The drum supporting board 11 corresponds to the supporting member of the present invention, and the supporting structure of the drum 7 by the drum supporting board 11 will be described in detail later.

An exhaust port 9 for exhausting dry air is provided at the center of the rear surface of the drum 7, and an intake port 12 for inhaling dry air is provided under the drum support plate 11.
Is provided.

Reference numeral 10 denotes a filter device provided from the front so as to cover the exhaust port 9. This filter device 10
Includes a lint filter 10a for collecting lint and dust from clothes during the drying operation, and a filter cover 10b for covering the lint filter 10a.

Reference numeral 13 denotes a dry air introduction duct attached to the inlet side of the intake port 12 of the drum support board 11, and a heater 14 is arranged in the duct.

Reference numeral 15 is a door for opening and closing the inlet 6, which is rotatably supported at the upper and lower ends on the left side of the clothes dryer 1 when viewed from the front, and is opened to the left.

Reference numeral 16 denotes a fan casing provided at the rear of the drum 7 so as to face the exhaust port 9, and 17
Is a heat exchange type double-sided fan made of synthetic resin, which is fixed in the fan casing 16 coaxially with the drum 7 by the support shaft 8. Blades are integrally formed on both the front and back surfaces of the double-sided fan 17 in a radial pattern.

Reference numeral 18 denotes a partition plate made of synthetic resin, which is provided so as to surround the outer periphery of the double-sided fan 17, and the inner peripheral portion thereof faces the outer peripheral portion of the double-sided fan 17. This partition 1
8 divides the inside of the fan casing 16 into a drying air passage 19 and a cooling air passage 20 together with the double-sided fan 17. The double-sided fan 17 and the partition plate 18 are labyrinth-coupled, so that the drying air passage 19 and the cooling air passage 20 are sealed.

Reference numeral 21 denotes a communication port provided in the fan casing 16 for connecting the exhaust port 9 and the dry air passage 19 to each other, and 22 surely allows the dry air discharged from the exhaust port 9 to the communication port 21. It is an annular seal member provided to guide the Reference numeral 23 is an inlet provided at the center of the rear plate 5 for introducing outside air into the cooling air passage 20, and 24 is an outlet provided at the bottom surface of the machine frame 3 for leading out the introduced outside air. Is.

Reference numeral 25 is a circulation duct that connects the drying air passage 19 and the introduction duct 13, and an outlet 26 is provided at the lowest position.

Reference numeral 27 denotes an induction motor, which is a drum pulley 2
8 and a drum belt 29, the drum 7 is connected to the drum 7, and a fan pulley 30 and a fan belt 31 are connected to a pulley 32 of the double-sided fan 17. 33 is an idler pulley, and the drum belt 2
By giving tension to 9, the slip of the drum belt 29 is prevented.

Thus, during heating and drying, the motor 2
When the drum 7 rotates, the drum 7 rotates at low speed and the double-sided fan 17 rotates at high speed. The dry air generated by the rotation of the double-sided fan 17 and heated by the heater 14 circulates through the dry air passage 19, the circulation duct 25, the introduction duct 13 and the drum 7 to exchange heat with the clothes in the drum 7. To do. At the same time, the outside air is introduced into the cooling air passage 20 by the rotation of the double-sided fan 17,
Cool yourself. Then, heat exchange takes place in the drum 7 and the dry air that has absorbed moisture from the clothes contacts the double-sided fan 17 and is cooled, so that the moisture in the dry air is condensed. The condensed water flows down through the drying air passage 19 and is discharged from the discharge port 26.

FIG. 2 is an enlarged cross-sectional view of the portion A shown in FIG. 1. Based on this FIG.
The support structure of the drum 7 will be described. The drum supporting board 11 has a peripheral surface 11a facing the opening inner peripheral edge 7a on the front surface of the drum 7, and the peripheral surface 11a supports the opening inner peripheral edge 7a. An annular sealing material 34 is interposed between the inner peripheral edge 7a of the opening and the peripheral surface 11a. The sealing material 34 is for preventing the dry air from leaking between the opening of the drum 7 and the drum support board 11.

Based on FIGS. 3 to 6, the sealing material 34 is used.
Will be described in detail. The sealing material 34 is composed of an upper sealing material 35 that occupies about three-tenths of the entire circumference and a lower sealing material 36 that occupies about tenths and seven of the entire circumference.

As shown in FIG. 4, the upper sealing material 35 is made of a felt material 35a having a thickness of about 3.1 mm and 100% polyester fiber, and a double-faced tape 35c is formed on the peripheral surface 11a of the drum supporting board 11. It is attached and makes sliding contact with the inner peripheral edge 7a of the opening. The upper sealing material 35 includes
As shown in FIG. 5, there are three cutout portions 37 at equal intervals, and a Teflon block 38 is incorporated in the cutout portion 37. This Teflon block 3
8 has a two-layer structure in which the upper side is a Teflon 38a having a small sliding resistance and the lower side is a rubber 38b. The upper portion of the peripheral surface 11a on which the Teflon block 38 is arranged is where the load of the drum 7 is most applied, and by receiving the load by the Teflon block 38, the upper sealing material 35 is prevented from being worn down. I am out.

As shown in FIG. 6, the lower seal material 36 is a felt material 36a having a thickness of about 3.1 mm and 100% polyester fiber, and the inner peripheral edge 7 of the opening of the felt material 36a.
a waterproof sheet 36b covering the sliding contact surface with a, and like the upper sealing member 35, the peripheral surface 11 of the drum supporting board 11.
It is affixed to a by a double-sided tape 36c and is in sliding contact with the inner peripheral edge 7a of the opening.

The waterproof sheet 36b has a thickness of about 0.1 mm and is made by waterproofing a non-woven fabric made of 100% polyester fiber, which is finer than the felt material 36a, by fluorine coating. The waterproof sheet 36b is attached to the sliding contact surface of the felt material 36a with a polyester adhesive. The waterproof sheet 36b corresponds to the waterproof layer of the present invention, and the waterproof layer is provided separately from the felt material.

Thus, during the drying operation, the dry air (steam) that has absorbed moisture from the clothes in the drum 7 and is wetted from the sliding contact surface of the felt material 36a with the inner peripheral edge 7a of the opening of the drum 7 inside the felt material 36a. The sliding surface of the felt material 36a is covered with the waterproof sheet 36b,
Ingress of moist dry air is prevented. Therefore, it is possible to prevent the felt material 36a from expanding including water, and as a result, it is possible to suppress an increase in sliding resistance between the inner peripheral edge 7a of the opening of the drum 7 and the sealing material 34, and to smooth the drum 7. Can hold rotation.

Further, the waterproof sheet 36b prevents the surface of the felt material 36a from directly rubbing against the inner peripheral edge 7a of the opening of the drum 7, so that the fibers of the felt material 36a can be prevented from fraying and becoming pills. It is possible to prevent the occurrence of abnormal vibration.

Further, the waterproof sheet 36b and the felt material 3
Since the adhesive for adhering 6a is made of the same polyester as that of the felt material 36a, the waterproof sheet 3 is abraded by abrasion.
Even if 6b is worn down, unlike the case where a different adhesive is used, a large sliding resistance does not occur.

The reason why the seal member 34 is composed of the upper seal member 35 and the lower seal member 36 and no waterproof sheet is attached to the upper seal member 35 will now be described. Since both sides of the hollowed-out portion 37 of the upper sealing material 35 have a narrow width, if a waterproof sheet is attached to this portion, when the drum 7 is supported by the drum support board 11, this portion of the drum is the above-mentioned. Turn over by rubbing against the inner peripheral edge 7a of the opening,
On the contrary, there is a possibility that it may cause sliding resistance during operation.
For this reason, it is better not to attach a waterproof sheet to both sides of the cutout portion 37. If only this is taken into consideration, the number of the sealing material 34 may be one (not the upper and lower separate bodies), the cutout portion 37 may be avoided, and the waterproof sheet may be attached to the other portion. However, in this case, the work of sticking the waterproof sheet becomes difficult, so in consideration of workability (work cost), the upper sealing material 35 and the waterproof sheet 36b having the cutout portion 37 and not covered with the waterproof sheet are provided. The lower sealing material 36 that has been attached constitutes the sealing material 34.

Next, the second embodiment, the third embodiment and the fourth embodiment of the present invention will be sequentially described. These embodiments show other embodiments of the sealing material 34, and other configurations are the same, so only the sealing materials having different configurations will be described below.

First, the sealing material of the second embodiment will be described with reference to FIG. In the above-mentioned first embodiment, in terms of workability (work cost) and waterproof effect,
In consideration of improving workability as much as possible, a sealing material is composed of an upper sealing material and a lower sealing material, and a waterproof sheet is not attached to the upper sealing material. However, the sealing material of the second embodiment is The waterproof effect is given the highest priority without giving due consideration to workability.

That is, in this sealing material 39, one felt material 39a is used and this felt material 39a is used.
The waterproof sheet 39 is also provided on the portion of a corresponding to the upper sealing material.
As a result, the felt material 39a is cut out 4
All parts except 0 (Teflon block 41) are covered with the waterproof sheet 39b.

Next, the sealing material of the third embodiment will be described with reference to FIGS. 8 and 9. The sealing material 42 of the third embodiment is the peripheral surface 11 a of the drum support board 11.
An annular felt material 42a (thickness: about 3.1 mm, 100% polyester fiber) wound around the
2a has a thickness of about 0.
A peripheral surface 1 of the drum support board 11 is composed of a 2 mm Teflon sheet 42b (hereinafter referred to as a Teflon sheet).
A double-sided tape 42c is attached to 1a and is in sliding contact with the inner peripheral edge 7a of the opening. The Teflon sheet 42b
Corresponds to the low friction layer and the waterproof / low friction layer of the present invention, and these low friction layer and the waterproof / low friction layer are provided separately from the felt material.

Like the upper sealing material 35 of the sealing material 34 of the first embodiment, the felt material 42a has three cutout portions 43 at equal intervals, and the Teflon block 44 is incorporated into the cutout portion 43. Has been. The Teflon sheet 42b is attached with an adhesive so as to cover the area other than the area where the hollow portion 43 is provided. The felt material 42a is a Teflon sheet 42b.
The thickness of the attached portion is reduced by the thickness of the Teflon sheet 42b. Also, in particular, the felt material 42a
The seam B is covered with the Teflon sheet 42b, which prevents the felt material 42b from peeling from the seam B and prevents dust from accumulating on the seam B.

Thus, during the drying operation, the dry air (steam) which has absorbed moisture from the clothes in the drum 7 and is wetted from the sliding contact surface of the felt material 42a with the inner peripheral edge 7a of the opening of the drum 7 inside the felt material 42a. Even if an attempt is made to enter, the sliding contact surface of the felt material 42a is covered with the Teflon sheet 42b, and the Teflon sheet 42b is waterproof, so that the entry of moist dry air is prevented. Therefore, it is possible to prevent the felt material 42a from containing water and expanding.
As a result, an increase in the sliding resistance between the inner peripheral edge 7a of the drum 7 and the sealing material 42 is suppressed, and the smooth rotation of the drum 7 can be maintained.

Further, even if some moisture enters the inside of the felt material 42a from other than the sliding contact surface and the felt material 42a expands to some extent, the Teflon sheet 42b covering the sliding contact surface has a small sliding resistance. It is possible to suppress an increase in sliding resistance with respect to the inner peripheral edge 7a of the opening, and also to maintain the smooth rotation of the drum 7.

Further, since the surface of the felt material 42a is not directly rubbed against the opening inner peripheral edge 7a of the drum 7 by the Teflon sheet 42b, it is possible to prevent the fibers of the felt material 42a from fraying and becoming pills. It is possible to prevent the occurrence of abnormal vibration.

In the third embodiment, instead of the Teflon sheet, a high molecular weight polyethylene sheet which has a larger sliding resistance than the Teflon sheet but is less expensive may be used.

Finally, the sealing material of the fourth embodiment is shown in FIG.
0 is shown. The seal material 45 is an annular felt material 45.
a and the first sheet 4 that covers about three-tenths of the upper side of the sliding contact surface of the felt material 45a with the inner peripheral edge 7a of the opening.
6 and the second sheet 4 that covers the remaining 7/10 of the lower side
7 The first sheet 46 is a Teflon sheet (thickness: about 0.2 mm), and the second sheet 47 is a high molecular weight polyethylene sheet (thickness: about 0.2) which is cheaper than the Teflon sheet but has a slightly higher sliding resistance. Or a thin Teflon sheet (thickness: about 0.1 mm), which is cheaper than the Teflon sheet serving as the first sheet 46. A large load is applied to the upper portion covered with the first sheet 46, but the lower portion is not so heavy.
For this reason, the cost is reduced by using a high molecular weight polyethylene sheet having a slightly higher sliding resistance or a thin Teflon sheet having a slightly lower strength so as not to deteriorate the performance as much as possible.

Further, since no Teflon block is used, dust and the like will not collect between the cut-out portion and the Teflon block.

In the above embodiment, the felt material constituting the sealing material is made of polyester fiber, but the material is not limited to this. For example, polyester fiber mixed with polypropylene fiber or nylon is used. It may be of fiber. In this case, the waterproof sheet and the adhesive of the first embodiment are preferably of the same quality as the fibers.

The sealing material may be attached to the inner peripheral edge 7a of the drum 7 and slidably contact the peripheral surface 11a of the drum support board 11. In this case, the waterproof sheet or the Teflon sheet covers the sliding contact surface with the peripheral surface 11a of the drum support board 11.

Further, the drum may have openings on both front and rear surfaces, and both openings may be supported by a drum support board.

[0048]

In the clothes dryer according to the first and second aspects of the present invention, the water vapor discharged from the drum is less likely to enter the inside of the felt material through the sliding contact surface, so the expansion of the felt material is suppressed. . As a result, an increase in sliding resistance between the inner peripheral edge of the opening of the drum and the felt material is suppressed, and smooth rotation of the drum can be maintained.

In the clothes dryer according to the third and fourth aspects of the present invention, even if the felt material expands, it is possible to prevent the sliding resistance from increasing and to maintain the smooth rotation of the drum.

In the clothes dryer according to the fifth and sixth aspects of the present invention, since the water vapor discharged from the drum is less likely to enter the inside of the felt material from the sliding contact surface, expansion of the felt material is suppressed and at the same time, Even if the felt material expands a little,
It is possible to suppress an increase in sliding resistance. Therefore, the smooth rotation of the drum can be maintained.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a structure of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a portion A in FIG. 1, showing a supporting structure of a drum 7 by a drum supporting board 11.

FIG. 3 is a front view showing the structure of the sealing material according to the first embodiment of the present invention, as viewed from the inside of the drum of the drum support board.

FIG. 4 shows a structure of an upper sealing material which constitutes the sealing material,
FIG. 5 is a sectional view taken along line XX of FIG. 4.

FIG. 5 is a perspective view of an essential part showing the arrangement structure of the Teflon block on the upper sealing material.

FIG. 6 shows a structure of a lower sealing material that constitutes the sealing material,
FIG. 5 is a sectional view taken along line YY of FIG. 4.

FIG. 7 is a front view showing a structure of a sealing material according to a second embodiment of the present invention, as viewed from the inside of a drum of a drum supporting board.

FIG. 8 is a front view showing the structure of a sealing material according to a third embodiment of the present invention, as viewed from the inside of a drum of a drum support board.

FIG. 9 is a ZZ sectional view of FIG. 8 showing the structure of the sealing material of the third embodiment.

FIG. 10 is a front view showing the structure of a sealing material according to a fourth embodiment of the present invention, as viewed from the inside of the drum of a drum support board.

[Explanation of symbols]

 2 casing 7 drum 7a opening inner peripheral edge 11 drum support board (supporting member) 11a peripheral surface 36a, 39a, 42a, 45a felt material 36b, 39b prevention sheet (waterproof layer) 42b teflon sheet (low friction layer, waterproof and low friction) Layer) 46 1st sheet (low friction layer, waterproof and low friction layer) 47 2nd sheet (low friction layer, waterproof and low friction layer)

Front page continuation (72) Inventor Takashi Fukuda 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A horizontal shaft type drum which is housed in a housing and has an opening on at least one of front and rear surfaces, and a peripheral surface which faces an inner peripheral edge of the opening of the drum. A support member that rotatably supports the drum by supporting the peripheral edge, is interposed between the inner peripheral edge of the opening and the peripheral surface, and is attached to either one of the inner peripheral edge of the opening or the peripheral surface. In a clothes dryer including a felt material slidingly contacting with the other side, a sliding contact surface of the felt material with the other side is covered with a waterproof layer that prevents water vapor from entering the felt material from the sliding contact surface. The clothes dryer characterized. 2. The clothes dryer according to claim 1, wherein the waterproof layer is a waterproof sheet obtained by waterproofing a cloth finer than the felt material. 3. A horizontal shaft type drum housed in a housing and having an opening on at least one of the front and rear surfaces, and a peripheral surface facing the inner peripheral edge of the opening of the drum. A support member that rotatably supports the drum by supporting the peripheral edge, is interposed between the inner peripheral edge of the opening and the peripheral surface, and is attached to either one of the inner peripheral edge of the opening or the peripheral surface. In a clothes dryer provided with a felt material that is in sliding contact with the other side, a sliding contact surface of the felt material with the other side is covered with a low friction layer that reduces sliding resistance with the other side. Clothes dryer to do. 4. The clothes dryer according to claim 3, wherein the low friction layer is a Teflon sheet. 5. A horizontal shaft type drum housed in a housing and having an opening on at least one of the front and rear surfaces, and a peripheral surface facing the inner peripheral edge of the opening of the drum. A support member that rotatably supports the drum by supporting the peripheral edge, is interposed between the inner peripheral edge of the opening and the peripheral surface, and is attached to either one of the inner peripheral edge of the opening or the peripheral surface. In a clothes dryer provided with a felt material that is in sliding contact with the other side, a sliding contact surface of the felt material with the other side is used to prevent invasion of water vapor from the sliding contact surface into the felt material, and the other side. A clothes dryer characterized by being covered with a waterproof and low-friction layer that reduces sliding resistance with. 6. The clothes dryer according to claim 5, wherein the waterproof and low-friction layer is a Teflon sheet.