JPH07284595A - Filtering device for clothings drying machine - Google Patents

Abstract

PURPOSE:To efficiently scrape lint or the like collected at a filter with a scraper by providing a mountain-shaped projection, for which a front face in a relative forward rotating direction is a smooth slope, protruded inside at the front face part of a filter cover provided centrifugally with the rotational center of the rear wall of a rotary drum. CONSTITUTION:A clothings drying machine is provided with a filter cover 3 equipped with a lot of openings on the inner peripheral side of a disk-shaped filter 2 provided at the back center of a rotary drum 1, and a mountain-shaped projection 5 protruded on the clothings housing part side of the rotary drum 1 is provided at the front face part of the filter cover 3. This mountain-shaped projection 5 is rotated relatively to the rotary drum 1 of the filter cover 3 and formed so that the front face in the relative forward rotating direction for collecting the lint or dust with a scraper 31 can be a smooth slope 51 and a rear face 52 can be vertical face or a sharp slope. Thus, relative rotary force is positively applied to the filter cover 3 by the contact of the mountain-shaped projection 5 and clothings, and the quantity of dust to be scraped by the scraper 31 is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for a clothes dryer, and more particularly to a filter device provided in the center of an exhaust side wall surface of a rotary drum for accommodating clothes. The present invention relates to a filter device including a filter and a filter cover that covers the filter to prevent contact with clothing.

[0002]

2. Description of the Related Art A filter device of this kind has already been disclosed in Japanese Utility Model Laid-Open No. 61-56991.
In this one, as shown in FIGS. 1 to 3, the rotary drum (1)
Wet air is exhausted through a disk-shaped filter (2) provided in the center of the back surface of the rotary drum (1), and the rotary drum (1) has a large number of openings on the inner peripheral side of the filter (2). (3) is provided.

In this case, the clothes contained in the rotating drum (1) are agitated by the rotation of the rotating drum (1), and then dried by the heated air sent into the rotating drum (1) to dry the clothes. The humid air is exhausted from the exhaust outlet to the outside through an exhaust passage such as an exhaust pipe by an exhaust fan (not shown) provided on the back surface of the filter (2).

During this discharge, dust such as yarn waste and fine fiber waste generated in the rotary drum (1) is collected by the filter (2) and is not discharged to the exhaust path. Therefore, the inconvenience that the dust or the like is clogged in the exhaust path or is discharged to the outside of the dryer is eliminated. When the drying process is repeatedly performed, dust and the like are finally accumulated on the entire surface of the filter (2) and the filter cannot be dried. In such a state, it is necessary to disassemble the filter device and clean it to remove dust and the like accumulated on the filter (2). Therefore, in this conventional one, the filter cover (3) is provided so as to be rotatable relative to the rotating drum (1), and the scraper (31) bent in an arc shape is provided on the filter cover (3). It is provided so as to contact the surface of 2). Also, filter cover
Projections (3a) and (3a) are provided on the surface of (3). Therefore, the filter cover (3) is rotated relative to the filter (2) by the contact between the protrusions (3a) (3a) and the clothes in the rotary drum (1), and the forward relative rotation of the filter cover (3) causes the scraper to rotate. The dust and the like accumulated on the filter (2) are attracted by the (31) to form a dust integrated body (M). As a result, the filter (2)
Is less likely to be clogged, and the usable time until the filter device needs to be cleaned becomes longer.

However, the relative rotation of the filter cover (3) due to the contact between the protruding portion (3a) and the clothing or the like includes a positive relative rotation in the direction of scraping dust and the like by the scraper (31),
It was found that both reverse relative rotation in the opposite direction occurs. In the rotating drum (1), clothes and the like are lifted by a lifter (not shown) as they rotate, and then fall faster than the rotating speed of the rotating drum (1), and then lifted by the lifter. Until such time, clothes or the like temporarily stop or slip and the rotation of the rotating drum (1) advances, and these operations are repeated during the drying operation.

Therefore, when the clothes fall, the protruding portion
When the filter cover (3) contacts the rotating drum (3a),
The filter cover (3) is rotated relative to the preceding mode with respect to (1), and conversely, when the clothing or the like after the drop comes into contact with the protruding section (3a), the filter cover (3) lags behind the rotating drum (1). It will be rotated relative to each other. And in the above-mentioned conventional one, a filter for attracting dust and the like by the scraper (31)
There is almost no difference between the positive relative rotation angle and the reverse relative rotation angle with respect to (2). That is, the scraper (31) is replaced by the filter (2).
On the other hand, there is a tendency that the state is such that it only reciprocates. Therefore, a situation may occur in which dust and the like in the entire area of the filter (2) cannot be attracted.

As described above, in the above-mentioned conventional device, the amount of positive relative rotation is insufficient, so that the efficiency of scraping dust and the like by the scraper (31) is insufficient. The present invention has been made in view of the above point, and describes "a filter (2) provided concentrically with the center of rotation of the rear wall of the rotating drum (1).
And a scraper (31) which is provided on a filter cover (3) which is supported on the inner surface of the filter so as to be rotatable relative to the rotary drum (1) and which is substantially in sliding contact with the filter (2),
In the filter device of the clothes dryer, the scraper (31) collects lint, dust, etc. collected in the filter (2) by the relative rotation of the filter cover (3) with respect to the rotating drum (1) ''. An object of the present invention is to efficiently scrape dust and the like collected in the filter (2) by the scraper (31).

[Invention of Claim 1]

[0009]

[Technical Means] The technical means of the present invention for solving the above-mentioned problems is to "rotate a drum on the front surface of the filter cover (3)".
A chevron protrusion (5) that protrudes toward the clothing storage part side of (1) is provided, and this chevron protrusion (5) is the rotating drum (1) of the filter cover (3).
The front surface in the positive relative rotation direction for collecting lint, dust, etc. by the scraper (31) is a gentle slope (51), and the rear surface is a vertical surface or a steep slope ".

[0010]

The above technical means operates as follows. The filter cover (3) is rotated relative to the rotating drum (1) by the relative rotation of the clothes and the like. The filter cover (3) has
A chevron-shaped protrusion that protrudes toward the clothes storage side of the rotating drum (1)
Since (5) is provided, the relative rotational force of the filter cover (3) is positively applied by the contact between this and clothes. Further, the chevron protrusions (5) are formed on the front surface (51) of the filter cover (3) in the positive relative rotation direction with respect to the rotating drum (1).
Is a gentle slope and the rear surface (52) is a vertical surface or a steep surface, the filter cover (3) has a rear surface (5) of the chevron protrusion (5).
The contact between 2) and the clothes causes a sufficient positive relative rotation, while the contact between the gentle slope of the front surface (51) and the clothes causes almost no reverse relative rotation. Therefore, the filter cover
A sufficient difference between the positive relative rotation amount and the reverse relative rotation amount in (3) is secured.

[0011]

[Effect] Since the difference between the normal and reverse relative rotation amounts of the filter cover (3) is sufficiently secured, as a result, the scraper (31) is provided on the entire circumference of the filter (2) during the drying operation. Since it is rotated positively relative to one side, the scraper (31)
The amount of dust and the like to be attracted is significantly increased. Therefore, the dust and the like collected in the filter (2) can be efficiently attracted.

[Other Inventions] In the invention of claim 1 described above, in the case where "the normal relative rotation direction of the filter cover (3) is the rotation direction of the rotary drum (1)", the rotary drum (1 When the clothes and the like fall inside the bracket, the clothes and the like come into contact with the steep slope or the vertical surface of the rear surface (52) of the chevron protrusion (5), and the filter cover (3) is rotated in the positive relative direction. On the other hand, when the clothes, etc., move toward the rear side with respect to the inner peripheral wall of the rotating drum (1) after the clothes, etc. fall, the clothes, etc. are moved to the front (51).
Of the filter cover is rotated in the reverse relative to the gentle slope of the filter cover.
(3) is hardly rotated relative to each other.

Therefore, the positive relative rotation amount further increases,
The dust and the like collected in the filter (2) are more efficiently attracted. In the invention of claim 1 or 2, the "filter (2) is disposed in an annular region and the scraper (3
(1) has a shape inclining in a substantially arc shape from the inner circumference to the outer circumference of the area where the filter (2) is disposed '', the dust and the like on the front surface of the scraper (31) in the positive relative rotation direction smoothly. filter
It is surely drawn to the peripheral side of the arrangement part of (2). This effect is also obtained when "the outside of the scraper (31) is set behind the inside in the forward relative rotation direction of the filter cover (3)", "the outside of the scraper (31) filters against its inside. The same can be said for the case where the cover (3) is set forward in the direction of normal relative rotation, but in the former case dust and the like are attracted to the outer peripheral side of the filter (2),
In the latter configuration, it is scraped toward the inner peripheral side.

[0014]

Embodiments of the present invention described above will now be described in detail with reference to the drawings. In the first embodiment shown in FIGS. 4 to 7, the ventilation hole forming portion of the filter cover (3) has a large number of spiral curved bars (3
3) (33) and one annular bar (34) are formed.

The relationship between the rotary drum (1) and the filter (2) will be described in detail below. Also in this embodiment, as in the conventional one, the back filter (2) is provided inside the rotary drum (1) of the exhaust port (11) provided at the center of the rear wall (10) of the rotary drum (1).
1) is fixed. The back filter (21) includes a shaft insertion portion (22) externally fitted to the rotary shaft portion of the rotary drum (1), an outer peripheral frame (23) of the outer peripheral portion of the exhaust port portion (11), and a space between them. And a filter sheet (24) stretched between the shaft insertion portion (22) and the outer peripheral frame (23). Then, in order to make the back filter (21) removable, a plurality of hook-shaped locking pieces (25) (25) protruding from the back surface of the outer peripheral frame (23) are attached to the exhaust of the rotary drum (1). Mouth (1
The rotation shaft lid (J) is screwed and fixed by engaging with the locking hole (12) provided in the rear wall (10) in the outer peripheral region of 1). Since the entire back filter (21) is made of elastic synthetic resin,
After removing the rotary shaft lid (J), pull back the back filter (21) from the rear wall (10) to remove the locking piece (25).
Is pulled out from the locking hole (12) and the back filter (21) can be removed.

The filter (2) is detachably engaged with an annular portion (22a) provided in the shaft insertion portion (22) and is loosely fitted into the shaft portion of the rotary drum (1) (a cylindrical shaft portion ( 26), the outer peripheral annular wall (27), the flange portion (F ₁ ) protruding from the middle of the tubular shaft portion (26), and the flange protruding inside the annular wall (27). parts and (F _2), these flanges (F ₁₎ (F ₂₎ becomes from the filter sheet (28) which is stretched between each other, the cylindrical shaft portion
The filter (2) and the rotary drum (1) are integrally rotated by the engagement between the (26) and the annular portion (22a).

The filter cover (3) is formed in a dish-like shape as a whole, and is provided with three chevron projections (5) (5) projecting into the rotary drum (1) at a part of the periphery of the filter cover (3). The inner wall (35) of the filter (2) is fitted to the annular wall (27) of the filter (2) in a loosely fitted state, and the annular rib (23a) formed on the peripheral edge of the outer frame (23) of the back filter (21). A ring-shaped outer wall (36) that is loosely fitted to the rotary shaft cover (J) of the rotating drum (1) on the rear surface of the central portion, and is engaged with the rotary cylinder lid (J) in a loosely locked state. Is provided. As shown in the rear view of FIG. 7, the engaging cylinder portion (4) is partially provided with slits (41) (41) that open in the axial direction and is configured to be elastically deformable in the radial direction. Tube
The protrusion (42) partially protruding from the inner peripheral surface of the tip of (4)
It is loosely fitted in an annular groove (J ₁ ) formed in the rotary shaft lid (J).
Therefore, since the filter cover (3) is loosely fitted with the rotary shaft lid (J), the filter (2) and the back filter (21), the rotary cover (1) is integrally rotated. It can be rotated relative to the filter (2).

The rotary drum (1) of this embodiment is set so as to rotate clockwise when viewed from the front (FIG. 5), and the chevron projection (5) is provided with a filter as shown in FIG. The front side in the clockwise direction of the surface of the cover (3) is a front surface (51) formed on a gentle slope, and the rear surface (52) on the opposite side is formed on a vertical surface. Therefore, when clothes fall in the direction of rotation of the rotating drum (1), these clothes and the chevron protrusions
By contact with the rear surface (52) (vertical surface) of (5), a positive relative rotational force is applied to this filter cover (3). When the clothes etc. stay and the rotating drum (1) rotates, the filter cover (3) is reversely rotated by the contact between the clothes etc. and the front surface (51) of the chevron projection. Has a gentle slope, this reverse relative rotation hardly occurs.

The flat surface of the filter cover (3) is provided with a vent hole forming portion having a large number of openings (30) (30) formed therethrough.
The vent hole forming portion is provided between the central disk portion (37) having the engaging cylinder portion (4) and the outer peripheral portion (38) having the inner wall (35) and the outer wall (36). A large number of spiral curved bars installed on the
(33) It consists of (33) and an annular bar (34) that connects the outside slightly from the middle of these, and a scraper is attached to the back of one curved bar (33).
(31) is formed so as to project. As shown in FIG. 4, the edge of the scraper (31) on the back side has a small chevron continuous shape, and the chevron continuous portion (31a) contacts the filter sheet (28) of the filter (2). The inner peripheral edge and the outer peripheral edge of the curved bar (33) are displaced in the circumferential direction, and the angle between the lines connecting the both ends and the center of the filter cover (3) is about 30 degrees. In the positive relative rotation direction of the filter cover (3), the inner peripheral side of the curved bar (33) is forward with respect to the outer peripheral side thereof.

The curved bars (33) are filter covers.
An annular bar (34) is formed on the inner end of the rotary drum (1) of the curved bars (33) and (33) with a bar having a constant width protruding to the back surface side of (3). In the case of this embodiment, dust or the like adheres to the surface of the filter sheet (28) of the filter (2) during the drying operation. Also, when clothes etc. are lifted by the rotation of the rotating drum (1) and then fall, this causes the above-mentioned chevron protrusion.
Since the rear surface (52) of (5) is pushed and the filter cover (3) is rotated relative to the rotating drum (1) in the positive relative direction (clockwise direction in FIG. 5), this causes the filter sheet (28) to move. Dust and the like adhering to the surface is scraped by the scraper (31). As shown in FIG. 5, the dust or the like thus collected is accumulated at the front portion of the scraper (31) in the normal relative rotation direction to form a dust accumulation body (M). M)
Force of scraper (31) and dust accumulator (M)
Part of the dust aggregate (M) is moved to the outer peripheral side when the scraper (31) is accelerated due to the correlation with the inertial force of the dust collector. As described above, the reverse relative rotation of the filter cover (3) hardly occurs, so the scraping operation by the scraper (31) is reliable and the operation amount is large.

Generally, the clothes etc. in the rotary drum (1) are
Since the rate of relative rotational movement in the forward direction with respect to the rotational direction of the rotating drum (1) is higher than the rate of relative rotational movement in the opposite direction, the direction of normal relative rotation of the filter cover (3) is In the case of the embodiment set as above, the positive relative rotation amount during the drying process is further increased, and the effect is further improved.

In this embodiment, as shown in FIG. 4, the scraper (31) and the curved bar (33) are located at positions outside the outer peripheral ends.
Since the ring-shaped lint storage section (39) is formed between the peripheral edge of the filter cover (3) and the flange section (F ₂ ), a part of the dust accumulation body (M) that has moved to the outer peripheral side is The lint storage section (3
It is stored or escaped on the 9) side. When the amount of the dust accumulation body (M) is increased to a predetermined amount, the above operation is performed and a part of the dust accumulation body (M) is moved to the outer peripheral side to be sequentially stored in the lint storage section (39). Escape. Usually, when about 60% of the total area of the filter sheet (28) of the filter (2) is covered with dust or the like, the filter device needs to be cleaned. The part (39) is filled with dust and the like, and continuous use becomes possible until the amount of the dust accumulation body (M) on the front side of the scraper (31) reaches the amount with respect to the filter sheet (28).

[Second Embodiment] This embodiment is the same as the first embodiment.
Is different from the first embodiment only in the configurations of the scraper (31) and the vent hole forming portion in the filter cover (3), and the other configurations are the same as those of the first embodiment. As shown in FIG. 8 and FIG. 9, the vent hole forming portion is provided with two scrapers (31) (31) and a plurality of radial directions as reinforcing bars continuously provided on the inner edge of the scraper (31) on the inner side of the rotating drum. The scraper (31) is composed of crosspieces (32) (32), and is formed in a spiral shape over a range of about one turn in the circumferential direction of the vent hole forming portion.

In this case, the partition surrounded by the scrapers (31) (31) and the radial bars (32) (32) has openings (30) (3).
0). In addition, the filter cover is the same as in the first embodiment.
Three chevron protrusions (5) (5) are projected forward from the peripheral edge of the front face of (3), and the front face (51) of each chevron protrusion (5) is made into a gently sloping surface and its rear face (52) is vertical. And with this,
In FIG. 8, the filter cover (3) is designed to rotate clockwise relative to each other.

In this embodiment, the chevron protrusion (5) is used.
By the action, the filter cover (3) is directly rotated relative to the clothes in contact with the clothes in the same manner as in the above embodiment (1), and dust or the like is scraped between the back surface of the ventilation hole forming portion and the filter sheet (28). Collected in front of (31). Then, the dust accumulating body (M) is moved to the outer peripheral side by the same action as in the case of the first embodiment, but the radial crosspieces (32) (32) are provided on the back side of the ventilation hole forming portion. These radial bars do not project
(32) (32) does not resist the movement of the dust collector (M). Therefore, the dust accumulation body (M) accumulated in front of the scrapers (31) (31) in the rotation direction is moved to the outer peripheral side more smoothly than in the first embodiment.

[Others] In this embodiment, the rotating direction of the rotating drum (1) is set clockwise when viewed from the front, and in relation to this, the rotating drum (1) of the filter cover (3) is set. ) Is the rotation direction of the rotary drum (1), but the normal relative rotation direction may be set in the opposite direction to the rotation direction of the rotary drum (1). In this case, when clothes etc. fall in the rotating drum (1), the clothes etc. come into contact with the gentle slope of the front surface (51) of the chevron protrusion (5), and the filter cover (3) is rotated in the opposite relative direction. When clothes, etc. remain and only the rotating drum (1) is rotating, the clothes, etc. come into contact with the steep or vertical surface of the rear surface (52), and the rotating drum
Although the positive relative rotation is made in the direction opposite to the rotation direction of (1), it is the positive relative rotation of the latter rather than the degree of engagement between clothes and the chevron projections (5) for the former reverse relative rotation. Therefore, the filter cover (3) is mainly rotated in the positive relative rotation direction also in this case.

Further, at least one chevron protrusion 5 is required, but if a plurality of chevron protrusions 5 are provided, the positive relative rotation frequency increases accordingly. Further, the chevron protrusions (5) may be formed on the disk portion (37) in the substantially central portion of the front surface of the filter cover (3), or may be formed in the range from the central portion to the peripheral portion of the front surface. Furthermore, the scraper (31) does not necessarily have to be curved, and may be linear.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a conventional example.

[Figure 2] Front view

FIG. 3 is an enlarged sectional view of an essential part.

FIG. 4 is a sectional view of an essential part of an embodiment of the present invention.

[Figure 5] Front view

FIG. 6 is a perspective view of the portion where the chevron protrusion (5) is formed on the filter cover (3).

FIG. 7: Rear view of the filter cover (3)

FIG. 8 is a front view of the filter cover (3) of the second embodiment.

FIG. 9 is a sectional view of the main part

[Explanation of symbols]

 (1) ・ ・ ・ Rotating drum (2) ・ ・ ・ Filter (3) ・ ・ ・ Filter cover (31) ・ ・ ・ Scraper (33) ・ ・ ・ Curved bar (5) ・ ・ ・ Angle protrusion (51) ・..Front surface (52) ... rear surface

Claims (5)

[Claims] 1. A filter (2) provided concentrically with a center of rotation of a rear wall of the rotary drum (1), and an inner surface of the filter (2) provided with the filter (2).
Filter cover supported so that it can rotate relative to (1)
(3) A scraper (31) that is provided in (3) and is in sliding contact with the filter (2), and is collected in the filter (2) by the relative rotation of the filter cover (3) with respect to the rotating drum (1). In a filter device for a clothes dryer in which scraps, dust, etc. are collected by the scraper (31), a mountain-shaped protrusion (5) protruding toward the clothes storage part of the rotary drum (1) is provided on the front surface of the filter cover (3). ), And the chevron protrusions (5)
Is the relative rotation of the filter cover (3) with respect to the rotating drum (1), and the front surface in the normal relative rotation direction for collecting lint, dust, etc. by the scraper (31) is the gentle slope (51), and the rear surface is Filter device for clothes dryer with vertical or steep slope. 2. The filter device for a clothes dryer according to claim 1, wherein the normal relative rotation direction of the filter cover (3) is matched with the rotation direction of the rotating drum (1). 3. The filter (2) disposition region is annular, and the scraper (31) is shaped so as to incline in a substantially arc shape from the inner periphery to the outer periphery of the filter (2) disposition region. The filter device for a clothes dryer according to claim 1 or 2. 4. The filter for a clothes dryer according to claim 1, wherein the outside of the scraper (31) is set rearward of the inside of the scraper (3) in the direction of normal relative rotation of the filter cover (3). apparatus. 5. The filter for a clothes dryer according to claim 1, wherein the outside of the scraper (31) is set forward of the inside of the scraper (3) in the direction of normal relative rotation of the filter cover (3). apparatus.