JP7266512B2 - Clothes dryer and filter device for clothes dryer - Google Patents

Description

The present invention relates to clothes dryers and filter devices for clothes dryers.

Patent Document 1 discloses an example of a conventional clothes dryer. This clothes dryer comprises a rotating drum, air blowing means and a filter device. The rotating drum has a drying chamber and an outlet for communicating the drying chamber with the outside. The blower means introduces air into the drying chamber and discharges it through the outlet. The filter device catches foreign matter such as lint, dirt, dust, etc. generated from the clothes in the drying chamber in front of the discharge port.

More specifically, the filter device has a filter and a filter guard. A filter is provided to cover the outlet. A filter can filter a foreign material. The filter guard is provided closer to the drying chamber than the filter. The filter guard protects the filter while allowing air to vent to the filter.

Additionally, the filter guard includes a scraper and a projection. The scraper abuts the surface of the filter. The convex portion protrudes toward the drying chamber and can come into contact with the clothes being agitated in the drying chamber.

In this clothes dryer, the protrusion contacts the clothes to be agitated and is pushed in the same direction as the rotation of the rotating drum, and the filter guard rotates around the rotation axis perpendicular to the surface of the filter, thereby causing the scraper to rotate. is adapted to scrape foreign matter from the surface of the filter. In this clothes dryer, foreign matter scraped by the scraper is moved toward the outer peripheral edge of the filter, thereby suppressing deterioration in the ability of the filter to capture foreign matter.

JP-A-7-236796

However, in the above-described conventional clothes dryer, since the foreign matter is only gathered to the outer peripheral edge side of the filter, it is difficult to prevent the gathered foreign matter from scattering while being moved by the rotation of the filter guard. It is difficult to further suppress the deterioration of foreign matter trapping performance due to

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clothes dryer and a filter device for the clothes dryer that can further suppress deterioration of the foreign matter capturing performance of the filter. and

A clothes dryer of the present invention comprises a rotating drum having a drying chamber for storing clothes, and an outlet for communicating the drying chamber with the outside,
an air blower that introduces air into the drying chamber and discharges it from the outlet;
a filter device that catches foreign matter generated from the clothes in the drying chamber in front of the discharge port,
The filter device is provided so as to cover the discharge port and is capable of filtering the foreign matter;
a filter guard provided closer to the drying chamber than the filter and protecting the filter while allowing the air to pass through the filter;
The filter guard includes a scraper that contacts the surface of the filter;
a convex portion protruding toward the drying chamber and capable of coming into contact with the clothes being agitated in the drying chamber;
A clothes dryer configured such that the filter guard rotates around a rotation axis perpendicular to the surface of the filter so that the scraper scrapes the foreign matter from the surface,
A recess recessed from the filter side to the drying chamber side is formed in the protrusion,
The scraper is configured to collect the scraped foreign matter in the recess,
The filter guard includes a baffle plate portion that restricts movement of the foreign matter collected in the concave portion due to rotation of the filter guard.

In the clothes dryer of the present invention, the rotation of the filter guard causes the scraper to scrape foreign matter from the surface of the filter, and the scraped foreign matter is collected in the concave portion provided on the filter side of the convex portion. The baffle plate portion restricts movement of the collected foreign matter due to the rotation of the filter guard. As a result, it is possible to prevent foreign matter collected in the recess from scattering while being moved by the rotation of the filter guard.

Therefore, in the clothes dryer of the present invention, it is possible to further suppress deterioration in the ability of the filter to trap foreign matter.

The filter desirably has a vented portion that allows ventilation and a non-vented portion that does not allow ventilation. Further, it is desirable that the concave portion is positioned on the drying chamber side of the non-ventilated portion. In this case, the non-ventilated portion can prevent foreign matter collected in the recess by the scraper and whose movement is restricted by the baffle plate from slipping through the filter, thereby further suppressing deterioration in the ability of the filter to capture foreign matter.

The filter guard desirably includes an outer frame extending along the perimeter of the filter. The baffle plate preferably extends so as to connect one end of the scraper remote from the rotation axis and the outer frame. It is desirable that the outer frame, the scraper, the concave portion, and the baffle plate form a storage portion for storing the foreign matter scraped by the scraper. In this case, foreign matter can be stored in the large-capacity reservoir including the concave portion, so that deterioration in the ability of the filter to capture foreign matter can be further suppressed.

It is desirable that the filter has a vent portion that allows ventilation and a non-ventilation portion that is annular and does not allow ventilation surrounding the vent portion. It is desirable that the concave portion is located on the drying chamber side of the non-ventilated portion. Further, it is desirable that the storage section is composed of an outer frame, a scraper, a recess, a baffle plate section, and a non-ventilation section. In this case, the outer frame, scraper, recessed portion and baffle plate portion of the filter guard, and the non-ventilating portion of the filter form a storage portion on the outer peripheral side of the filter guard, and the foreign matter stored in the storage portion is disposed on the outer periphery of the filter. Since the non-ventilated portion can prevent the filter from slipping through the side, it is possible to further prevent deterioration of the filter's ability to trap foreign matter.

It is desirable that the filter guard rotates when the protrusion contacts the clothes and is pushed in the same direction as the rotation of the rotating drum. In this case, there is no need for a drive source or a transmission mechanism for rotation, and a simple filter guard in which concave portions are provided on the filter side of the convex portions that are pushed by the clothing reduces the manufacturing cost and allows the filter to be used. It is possible to further suppress deterioration of foreign matter trapping performance.

A filter device for a clothes dryer according to the present invention comprises a rotating drum having a drying chamber for storing clothes and an outlet for communicating the drying chamber with the outside,
an air blower that introduces air into the drying chamber and discharges it from the outlet;
A filter device for a clothes dryer that is applied to a clothes dryer comprising:
a filter provided to cover the outlet and capable of filtering the foreign matter;
a filter guard provided closer to the drying chamber than the filter and protecting the filter while allowing the air to pass through the filter;
The filter guard includes a scraper that contacts the surface of the filter;
a convex portion protruding toward the drying chamber and capable of coming into contact with the clothes being agitated in the drying chamber;
The scraper is configured to scrape the foreign matter from the surface by rotating the filter guard around a rotation axis perpendicular to the surface of the filter,
A recess recessed from the filter side to the drying chamber side is formed in the protrusion,
The scraper is configured to collect the scraped foreign matter in the recess,
The filter guard includes a baffle plate portion that restricts movement of the foreign matter collected in the concave portion due to rotation of the filter guard.

INDUSTRIAL APPLICABILITY The filter device for a clothes dryer of the present invention is applied to a clothes dryer, and can further suppress deterioration of the foreign matter trapping performance of the filter.

According to the clothes dryer and the filter device for the clothes dryer of the present invention, it is possible to further suppress deterioration in the ability of the filter to trap foreign matter.

FIG. 1 is a schematic cross-sectional view of the clothes dryer of the embodiment. FIG. 2 is an exploded perspective view of the filter, filter guard, cover filter and filter support member. FIG. 3 is a rear view of the filter guard. 4 is a partial perspective view of the filter guard as seen from the direction of arrow Z in FIG. 3. FIG. FIG. 5 is a partial cross-sectional view showing the AA cross section of FIG. FIG. 6 is a perspective view of a filter without a blockage.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

(Example)
As shown in FIG. 1, the clothes dryer 1 of the embodiment is an example of a specific embodiment of the clothes dryer of the present invention. The clothes dryer 1 is a gas clothes dryer that dries clothes with air heated by combustion of gas. The filter device 10 of the embodiment is an example of a specific mode of the filter device for the clothes dryer of the present invention.

1, the side of the housing 8 on which the door 89 is arranged is defined as the front, and the side of the housing 8 opposite to the side on which the door 89 is arranged is defined as the rear. display. The front-rear direction shown in FIG. 2 and subsequent figures are all displayed corresponding to the front-rear direction shown in FIG.

<Configuration of clothes dryer>
As shown in FIG. 1 , the clothes dryer 1 includes a substantially box-shaped housing 8 and a rotating drum 80 housed in the housing 8 .

A single door 89 is supported on the front side of the housing 8 so that it can be opened and closed. A clothing slot 88 is provided on the front surface of the housing 8 . The clothes inlet 88 can be closed and opened by a door 89. As shown in FIG. An inner peripheral edge of a substantially annular ring plate 87 is joined to an edge of the clothing inlet 88 located inside the housing 8 . A communication hole 87A is formed in the lower portion of the ring plate 87. As shown in FIG.

A drum support shaft 80S centered on the rotation axis X80 is fixed to the rear wall of the housing 8 . The rotation axis X80 extends horizontally in the front-rear direction of the housing 8 . The drum support shaft 80S protrudes toward the front side of the housing 8 .

The rotating drum 80 has a cylindrical portion 84 and a back wall portion 82 . The cylindrical portion 84 has a cylindrical shape centered on the rotation axis X80. The inner wall portion 82 has a substantially disc shape connected to the edge of the cylindrical portion 84 located on the rear surface side of the housing 8 . The inner wall portion 82 has a supported shaft 82S projecting rearward about the rotation axis X80.

The rotating drum 80 has a cylindrical portion 84 and a back wall portion 82 that form a drying chamber 81 that accommodates the clothes C1. The back wall portion 82 is provided with a discharge port 83 that communicates the drying chamber 81 with the outside of the rotating drum 80 . The discharge port 83 is composed of a plurality of holes penetrating through the inner wall portion 82 so as to surround the rotation axis X80.

The rotating drum 80 has a supported shaft 82S of the back wall portion 82 rotatably supported by the front end portion of the drum supporting shaft 80S, and the edge of the cylindrical portion 84 located on the front side of the housing 8 is a ring plate 87. By being rotatably supported by the outer peripheral edge, it is rotatable around the rotation axis X80.

A motor 60 is provided below the rotating drum 80 in the housing 8 . The motor 60 has a first drive shaft 61 protruding forward and a second drive shaft 62 protruding rearward.

The rotary drum 80 receives the driving force of the motor 60 by a first pulley 61P fixed to the first drive shaft 61 and a first transmission belt 61B wound around the first pulley 61P and the cylindrical portion 84 of the rotary drum 80. is transmitted to rotate about the rotation axis X80. Rotation of the rotary drum 80 is performed to constantly move and agitate the clothes C1 stored in the drying chamber 81 without stopping at a fixed position.

In this embodiment, the rotating drum 80 rotates clockwise around the rotation axis X80 when viewed from the left side of the paper surface of FIG. 2 to 4 show the rotation direction R1 of the rotary drum 80 around the rotation axis X80.

The clothes dryer 1 also includes an air blower 7, a heat source 5, and a controller 3, as shown in FIG.

The blower means 7 has an air supply port 71 , an air supply duct 72 , an air exhaust port 75 , an air exhaust duct 76 and an air exhaust fan 78 .

The air supply port 71 is a plurality of holes penetrating through the bottom wall of the housing 8 . The air supply duct 72 is provided inside the housing 8 on the front side and the bottom wall side. An inlet port 72A is formed in the air supply duct 72 . The introduction port 72</b>A opens widely downward at a position spaced upward from the air supply port 71 in the housing 8 . The air supply duct 72 extends upward from the introduction port 72A, and its upper end is connected to the communication hole 87A of the ring plate 87. As shown in FIG.

An air supply path for supplying air to the drying chamber 81 is configured by the air supply port 71, the air supply duct 72, and the communication hole 87A.

The exhaust port 75 is a hole penetrating through the upper wall of the housing 8 on the rear surface side of the housing 8 relative to the rotating drum 80 . The exhaust duct 76 is provided between the inner wall portion 82 of the rotary drum 80 and the rear wall of the housing 8 . An outlet port 76A is formed in the exhaust duct 76 . The lead-out port 76</b>A opens wide forward in the housing 8 at a position facing the outlet 83 of the rotary drum 80 . The exhaust duct 76 extends upward from the lead-out port 76A and connects to the exhaust port 75 at its upper end.

The exhaust port 83 , the exhaust duct 76 and the exhaust port 75 constitute an exhaust path for exhausting the air from the drying chamber 81 .

The exhaust fan 78 is provided inside the exhaust duct 76 . The exhaust fan 78 is fixed to a cylindrical fan support 78S that is fitted around the drum support shaft 80S in a state facing the discharge port 83 of the rotating drum 80, and is rotatable around the rotation axis X80. there is

To the exhaust fan 78, the driving force of the motor 60 is transmitted by a second pulley 62P fixed to the second drive shaft 62 and a second transmission belt 62B wound around the second pulley 62P and the fan support 78S. By doing so, it rotates around the rotation axis X80. Due to the rotation of the exhaust fan 78, the air outside the housing 8 is introduced into the drying chamber 81 via the air supply port 71, the air supply duct 72, and the communication hole 87A, flows through the drying chamber 81, and then is exhausted. It is discharged to the outside of the housing 8 via the outlet 83 , the exhaust duct 76 and the exhaust port 75 .

The heating source 5 has a gas burner 50 , a gas supply valve device 53 and a gas injection nozzle 51 .

The gas burner 50 is arranged directly below the introduction port 72A of the air supply duct 72 . The gas supply valve device 53 supplies fuel gas to the gas injection nozzle 51 from a gas supply source (not shown). The gas injection nozzle 51 injects fuel gas toward the gas inlet 50A of the gas burner 50 . As a result, the fuel gas is led to the gas burner 50 together with the air around the gas inlet 50A and burned. As a result, the air taken into the housing 8 from the air supply port 71 by the rotation of the exhaust fan 78 is heated by the fuel exhaust gas generated by the gas burner 50, and passes through the introduction port 72A of the air supply duct 72 and the like. The warm air is supplied into the drying chamber 81 . The warm air circulates in the drying chamber 81 and absorbs the moisture of the clothes C1, and then is discharged to the outside of the housing 8 from the exhaust port 75 via the exhaust port 83 and the exhaust duct .

The control unit 3 is provided at a position below the clothing inlet 88 inside the housing 8 . The control unit 3 is an electronic circuit unit including a CPU, a memory, an interface circuit, and the like (not shown). The control unit 3 controls the motor 60 and the gas supply valve device 53 constituting the air blowing means 7 and the heat source 5 to perform a drying operation for drying the clothes C1 stored in the drying chamber 81 .

<Configuration of filter device>
The clothes dryer 1 further includes a filter device 10 that catches foreign matter such as lint, dust, and dust generated from the clothes C1 in the drying chamber 81 before the discharge port 83. As shown in FIG.

The filter device 10 has a filter support member 15 shown in FIGS. 1 and 2, a filter 30 and a cover filter 40 shown in FIGS. 1, 2 and 5, and a filter guard 20 shown in FIGS. ing. In the following description, the drying chamber 81 side is the front side of the housing 8 , and the filter 30 side is the rear side of the housing 8 .

<Filter support member>
As shown in FIG. 2, the filter support member 15 is an annular member centered on the rotation axis X80, and has a cylindrical support tube portion 15A protruding forward at the center thereof. As shown in FIG. 1, the filter support member 15 is fixed to the inner wall portion 82 of the rotary drum 80, and the support cylinder portion 15A protrudes toward the drying chamber 81 side.

<Filter>
As shown in FIG. 2 , the filter 30 has an inner filter frame 38 , an outer filter frame 39 , a blocking portion 36 and a ventilation portion 35 . The blocking part 36 is an example of the "non-ventilation part" of the present invention.

The filter inner frame 38 is an annular member centered on the rotation axis X80, and has a cylindrical portion, engaging claws, etc. for engaging with other members at the center thereof.

The filter outer frame 39 is an annular member that surrounds the filter inner frame 38 around the rotation axis X80 and constitutes the outer peripheral edge of the circular filter 30 . As shown in FIG. 5, an annular cushion member 39C centered on the rotation axis X80 is attached to the rear end surface of the filter outer frame 39. As shown in FIG. An annular guide groove 39G centered on the rotation axis X80 is formed in the front end surface of the filter outer frame 39 so as to be recessed rearward.

As shown in FIGS. 2 and 5, a mesh 37 is stretched between the outer peripheral side of the filter inner frame 38 and the inner peripheral side of the filter outer frame 39 .

The closing portion 36 is integrally formed on the inner peripheral side of the filter outer frame 39 . The closing portion 36 has an annular shape centered on the rotation axis X80 and has an inner flange shape extending toward the filter inner frame 38 . The blocking part 36 blocks the outer peripheral side of the mesh 37 without ventilation.

The ventilation part 35 is a region located between the outer peripheral side of the filter inner frame 38 and the inner peripheral side of the blocking part 36 in the mesh 37 . The ventilation part 35 is only surrounded by the annular blocking part 36 and is capable of ventilation.

As shown in FIG. 1, the filter inner frame 38 is fitted to the support tube portion 15A of the filter support member 15, so that the filter support member 30 can be rotated integrally with the rotary drum 80 around the rotation axis X80. 15 supported. The rotation axis X80 extends perpendicularly to the surface of the ventilation section 35 of the filter 30 .

In this state, the filter 30 covers the discharge port 83 by bringing the filter outer frame 39 into contact with the outer peripheral side of the discharge port 83 in the inner wall portion 82 via the cushion member 39C.

The ventilation part 35 can filter foreign matter by setting the mesh roughness of the mesh 37 according to the size of foreign matter such as lint, dust, and dust generated from the clothing C1.

As shown in FIG. 2, the area of the ventilation part 35 is set to S1. The area S1 is the ventilation area of the mesh 37 when the filter 30 has the blocking portion 36 . FIG. 6 shows the mesh 37 (37A) when the filter 30 does not have the blocking portion 36, and the ventilation area of the mesh 37 (37A) in that case is assumed to be S2. In this embodiment, the ventilation area S1 is set to 55 to 65% of the ventilation area S2.

<Cover filter>
As shown in FIG. 2 , the cover filter 40 has a cover filter inner frame 48 , a cover filter outer frame 49 and a cover mesh 47 .

The cover filter inner frame 48 is an annular member centered on the rotation axis X80, and has a circular hole, an engaging claw, or the like formed in the center thereof for engaging with other members.

The cover filter outer frame 49 is an annular member that surrounds the cover filter inner frame 48 with the rotation axis X80 as the center, and constitutes the outer peripheral edge of the circular cover filter 40 .

As shown in FIGS. 2 and 5 , a cover mesh 47 is stretched between the outer peripheral side of the cover filter inner frame 48 and the inner peripheral side of the cover filter outer frame 49 .

As shown in FIG. 1, the cover filter 40 is arranged between the inner wall portion 82 and the filter 30, and the cover filter inner frame 48 is fitted to the filter inner frame 38 of the filter 30 so that the rotation axis It is supported by the filter support member 15 so as to be rotatable integrally with the rotating drum 80 and the filter 30 around the center X80.

In this state, the cover filter outer frame 49 is surrounded by the filter outer frame 39 , and the cover filter outer frame 49 abuts on the outer peripheral side of the inner wall portion 82 relative to the outlet 83 . Cover 83.

The coarseness of the mesh of the cover mesh 47 is set corresponding to the size of foreign matter such as lint, dust, and dust generated from the clothing C1, and is set slightly larger than the coarseness of the mesh 37 of the filter 30. can filter out foreign matter. As a result, the filter device 10 can suppress an increase in ventilation resistance due to the provision of the cover filter 40 .

<Filter guard>
As shown in FIG. 2, the filter guard 20 includes an outer frame 29, a guard portion 21, a first convex portion 26 and a second convex portion 26B, which are integrally formed as one member.

As shown in FIGS. 2 and 3, the outer frame 29 has an annular shape centered on the rotation axis X80. As shown in FIG. 5, the cross-sectional shape of the outer frame 29 is a shape extending in the front-rear direction while being bent like a crank.

As shown in FIGS. 2 to 5, the guard portion 21 has a protective plate portion 21A formed on the outer peripheral side of a substantially circular flat plate connected to the front edge of the outer frame 29, and an engaging portion 21B at the center of the substantially circular flat plate. is formed, and between the protection plate portion 21A and the engaging portion 21B of the substantially circular flat plate, a substantially arc-shaped opening portion 21C centered on the rotation axis X80 is formed.

The opening 21C is an assembly of a plurality of small openings partitioned by a plurality of curved bars 21E and a plurality of arc bars 21F. Each curved bar 21E is curved so as to extend from the engaging portion 21B toward the outer frame 29 and bend in a direction opposite to the rotational direction R1. Each arc crosspiece 21F extends arcuately so as to surround the engaging portion 21B and intersects with each curved crosspiece 21E.

An outer peripheral side opening 21C1, which is a part of the opening 21C, is opened by biting into the protection plate portion 21A so as to be adjacent to the outer frame 29. As shown in FIG. A protective plate extending portion 21A1, which is a part of the protective plate portion 21A, extends toward the engaging portion 21B on the open side of the arc of the opening portion 21C and is connected to the engaging portion 21B.

As shown in FIG. 3, the engaging portion 21B has a pair of engaging claws 21B1, 21B1. The engaging claws 21B1, 21B1 protrude toward the front side of the paper surface of FIG. 3, that is, rearward, and have claw-shaped tips.

As shown in FIG. 1, the filter guard 20 is arranged closer to the drying chamber 81 than the filter 30, and the engaging claws 21B1, 21B1 of the engaging portion 21B are arranged on the inner peripheral side of the support cylindrical portion 15A of the filter support member 15. As shown in FIG. By engaging with , it is supported by the filter support member 15 so as to be rotatable around the rotation axis X80 independently of the rotary drum 80, the filter support member 15, the filter 30 and the cover filter 40.

In this state, as shown in FIG. 5, the filter guard 20 has the guard portion 21 separated from the filter 30 toward the drying chamber 81 side, and the outer frame 29 extends along the filter outer frame 39 so that the outer frame 29 extends. Since the rear edge side enters the guide groove 39G of the filter outer frame 39, the filter 30 is protected while air is allowed to pass through the filter 30. FIG.

As shown in FIG. 2, the first convex portion 26 and the second convex portion 26B have the same substantially triangular shape and differ only in arrangement and orientation. The first convex portion 26 and the second convex portion 26B each protrude from the protective plate portion 21A of the guard portion 21 toward the drying chamber 81 and can come into contact with the clothes C1 being agitated in the drying chamber 81.

The first convex portion 26 is arranged at a position adjacent to the outer frame 29 and in the vicinity of the protection plate extension portion 21A1. The second protrusion 26B is arranged adjacent to the outer frame 29 and on the side opposite to the first protrusion 26 across the rotation axis X80. The 1st convex part 26 is an example of the "convex part" of this invention.

Each of the first convex portion 26 and the second convex portion 26B has a contact surface 26E facing away from the rotation direction R1 and an inclined surface 26F connected to the contact surface 26E and facing in the rotation direction R1. there is

The inclination of the contact surface 26E with respect to the rotation axis X80 is set significantly smaller than the inclination of the inclined surface 26F with respect to the rotation axis X80. Since the clothes C1 are agitated in the rotation direction R1 of the rotary drum 80, the contact surface 26E is oriented in the same direction as the rotation direction R1 of the rotary drum 80 when it comes into contact with the clothes C1 being agitated in the drying chamber 81. pushed by Let the direction of the same direction as rotation direction R1 be a scraping direction. On the other hand, even if the inclined surface 26F comes into contact with the clothes C1 stirred in the drying chamber 81, it only sheds the clothes C1, and is hardly pushed by the clothes C1.

When the contact surfaces 26E of the first protrusions 26 and the second protrusions 26B are not in contact with the clothing C1, the filter guard 20 is free from the frictional force acting between the engaging portion 21B and the support cylinder portion 15A and the external force. Due to the frictional force acting between the frame 29 and the filter outer frame 39 , the rotating drum 80 , the filter support member 15 , the filter 30 and the cover filter 40 are rotated.

On the other hand, the contact surfaces 26E of the first projections 26 and the second projections 26B of the filter guard 20 come into contact with the clothing C1 and are pushed in the scraping direction. It rotates relative to the filter support member 15 , the filter 30 and the cover filter 40 in the scraping direction.

As shown in FIGS. 3-5, the filter guard 20 further includes a first recess 27, a second recess 27B, a scraper 25 and a baffle plate portion 24. As shown in FIGS.

A first concave portion 27 is formed on the filter 30 side of the first convex portion 26 . The 1st recessed part 27 is an example of the "recessed part" of this invention. The first concave portion 27 is recessed from the filter 30 side of the first convex portion 26 toward the drying chamber 81 side. That is, the first concave portion 27 is a predetermined space formed closer to the drying chamber 81 than the protective plate portion 21A of the guard portion 21 .

A second concave portion 27B is formed on the filter 30 side of the second convex portion 26B. The second concave portion 27B is recessed from the filter 30 side of the second convex portion 26B toward the drying chamber 81 side. The second recessed portion 27B has the same shape as the first recessed portion 27 and differs only in arrangement and orientation, similar to the relationship between the first projected portion 26 and the second projected portion 26B.

In FIG. 3, the inner peripheral edge 36E of the closing portion 36 is indicated by a chain double-dashed line. As shown in FIGS. 3 and 5, the first recessed portion 27 and the second recessed portion 27B are located on the drying chamber 81 side of the closing portion 36 .

As shown in FIGS. 3 to 5, the scraper 25 is formed to protrude from the protection plate extension portion 21A1 of the guard portion 21 toward the filter 30 side. The scraper 25 is curved so as to extend toward the outer frame 29 from the vicinity of the engaging portion 21B and bend in a direction opposite to the rotational direction R1.

As shown in FIG. 3, one end portion 25E of the scraper 25 far from the rotation axis X80 is positioned between the inner peripheral edge 36E of the closing portion 36 and the first recess 27 in the radial direction of the rotation axis X80. there is One end 25E of the scraper 25 is located near the bottom 27D of the first recess 27, which is the most recessed in the circumferential direction of the rotation axis X80.

As shown in FIG. 4, a plurality of small projections are formed at predetermined intervals on the edge of the scraper 25 on the filter 30 side. As shown in FIG. 5, the scraper 25 is in contact with the surface of the ventilation portion 35 of the filter 30 by means of small projections.

The scraper 25 scrapes foreign matter from the surface of the ventilation section 35 by rotating the filter guard 20 relative to the filter 30 in the scraping direction. The foreign matter scraped off by the scraper 25 moves along the side surface of the scraper 25 to the one end 25E and is collected in the first recess 27 . As shown in FIGS. 3 to 5, an accumulation D1 of foreign matter collected in the first recess 27 by the scraper 25 is shown as an example.

The baffle plate portion 24 is formed so as to protrude toward the filter 30 from a portion of the protection plate portion 21A of the guard portion 21 shifted in the direction opposite to the rotation direction R1 with respect to the bottom portion 27D of the first recess 27 .

One end of the baffle plate portion 24 is connected to one end portion 25</b>E of the scraper 25 . The baffle plate portion 24 extends from one end thereof toward the outer frame 29 and in the direction opposite to the rotational direction R1. The other end of baffle plate portion 24 is connected to outer frame 29 .

As shown in FIGS. 4 and 5 , the length by which the baffle plate portion 24 protrudes toward the filter 30 is set shorter than the length by which the scraper 25 protrudes toward the filter 30 .

As shown in FIGS. 3 to 5, the baffle plate portion 24 removes foreign matter, such as foreign matter, collected in the first concave portion 27 by rotating the filter guard 20 relative to the filter 30 in the scraping direction. It restricts the stack D1 from moving from the first concave portion 27 in the direction opposite to the rotational direction R1.

<Reservoir>
The outer frame 29 of the filter guard 20, the scraper 25, the first concave portion 27 and the baffle plate portion 24 constitute a storage portion 20S. In addition to the outer frame 29, scraper 25, first concave portion 27 and baffle plate portion 24 of the filter guard 20, the blocking portion 36 of the filter 30 also constitutes the storage portion 20S.

The storage part 20S has a substantially dead end shape at a position shifted in the direction opposite to the rotation direction R1 from the bottom part 27D of the first recess 27, and stores the foreign matter scraped by the scraper 25, for example, the accumulated foreign matter D1. .

<Effect>
In the clothes dryer 1 of the embodiment, as shown in FIGS. 3 to 5, the filter guard 20 rotates relative to the filter 30 in the same scraping direction as the rotation direction R1, thereby causing the scraper 25 to rotate. scrapes foreign matter from the surface of the vent portion 35 of the filter 30 and collects the scraped foreign matter in the first concave portion 27 of the first convex portion 26 provided on the filter 30 side. The baffle plate portion 24 restricts the movement of the collected foreign matter, for example, the accumulated foreign matter D1, from the first concave portion 27 in the direction opposite to the rotation direction R1 due to the rotation of the filter guard 20 . As a result, it is possible to prevent foreign matter collected in the first concave portion 27 from scattering while being moved by the rotation of the filter guard 20 .

Therefore, in the clothes dryer 1 of the embodiment, it is possible to further suppress deterioration of the foreign matter trapping performance of the filter 30 . The filter device 10 for the clothes dryer of the embodiment is also applied to the clothes dryer 1, and the deterioration of the foreign matter trapping performance of the filter 30 can be further suppressed. As a result, it is possible to lengthen the intervals between the work of disassembling the filter device 10 and cleaning the filter 30 by the user, and the user's convenience can be improved.

Further, in this clothes dryer 1 , the filter 30 has the vent portion 35 and the blocking portion 36 , and the first concave portion 27 is located on the drying chamber 81 side of the blocking portion 36 . With this configuration, the foreign matter collected in the first concave portion 27 by the scraper 25 and whose movement is restricted by the baffle plate portion 24, for example, an accumulation D1 of foreign matter rubs against the mesh 37 of the filter 30 and is blocked from slipping through the filter 30. Since it can be suppressed by the portion 36, it is possible to further suppress deterioration of the foreign matter trapping performance of the filter 30. FIG.

Further, in the clothes dryer 1, the outer frame 29 of the filter guard 20, the scraper 25, the first concave portion 27 and the baffle plate portion 24 constitute a storage portion 20S that stores foreign matter scraped by the scraper 25. As shown in FIG. With this configuration, foreign matter, for example, the accumulation of foreign matter D1 can be stored in the large-capacity storage portion 20S including the first recess 27, so that deterioration of the foreign matter capturing performance of the filter 30 can be further suppressed.

In addition, in this clothes dryer 1, in addition to the outer frame 29, the scraper 25, the first concave portion 27 and the baffle plate portion 24 of the filter guard 20, the blocking portion 36 of the filter 30 also constitutes the storage portion 20S. With this configuration, the blocking portion 36 prevents the foreign matter stored in the storage portion 20S, for example, the accumulated foreign matter D1, from rubbing against the mesh 37 on the outer peripheral side of the filter 30 and slipping through the filter 30. It is possible to further suppress the deterioration of the capture performance of

Further, in the clothes dryer 1, the contact surfaces 26E of the first protrusions 26 and the second protrusions 26B of the filter guard 20 come into contact with the clothes C1 to scrape the clothes C1 in the same direction as the rotational direction R1 of the rotary drum 80. By being pushed in the direction, it rotates relative to the filter 30 in the scraping direction. With this configuration, a drive source, a transmission mechanism, etc. for rotation are not required, and the simple filter guard 20 in which the first concave portion 27 is recessed on the filter 30 side of the first convex portion 26 pushed by the clothing C1 can be used. Therefore, it is possible to further suppress deterioration of the foreign matter trapping performance of the filter 30 while reducing the manufacturing cost.

Further, in this clothes dryer 1, the area S1 of the ventilation part 35 is set to 55 to 65% of the ventilation area S2 of the mesh 37 (37A) when the filter 30 does not have the blocking part . As a result, the blocking portion 36 appropriately blocks foreign matter on the outer peripheral side of the filter 30, and clogging of the ventilation portion 35 can be suppressed. As a result, it is possible to increase the interval between cleaning operations of the filter 30 by the user with high certainty, and the user's convenience can be further improved.

Although the present invention has been described above with reference to the embodiments, it goes without saying that the present invention is not limited to the above embodiments, and can be modified and applied without departing from the scope of the invention.

For example, in the embodiment, the filter guard 20 rotates relative to the filter 20 when the first convex portion 26 and the second convex portion 26B are pushed by the clothes C1 stirred in the drying chamber 81. The invention is not limited to this configuration. For example, the filter guard may be driven to rotate. In this case, the convex portion of the filter guard can exert a function of loosening the clothes by coming into contact with the clothes being stirred in the drying chamber.

The present invention also includes a configuration in which the scraper and the baffle plate portion corresponding to the second recessed portion 27B according to the embodiment are provided separately from the scraper 25 and the baffle plate portion 24 corresponding to the first recessed portion 27 according to the embodiment.

In the embodiment, the baffle plate portion 24 connects the one end portion 25E of the scraper 25 and the outer frame 29, but the present invention is not limited to this configuration. For example, the present invention also includes a configuration in which the baffle plate is not connected to at least one of the one end of the scraper and the outer frame.

In the embodiment, the first convex portion 26, the first concave portion 27 and the closing portion 36 are provided on the outer peripheral side of the filter guard 20 and the filter 30, but the present invention is not limited to this configuration. For example, protrusions, recesses, and non-venting portions may be provided on the inner peripheral side of the filter guard and filter.

INDUSTRIAL APPLICABILITY The present invention can be used in houses, laundry facilities, etc. where clothes dryers are installed.

DESCRIPTION OF SYMBOLS 1... Clothes dryer 10... Filter apparatus C1... Clothes 81... Drying chamber 83... Discharge port 80... Rotating drum 7... Blowing means 30... Filter 20... Filter guard 25... Scraper 26... Convex portion (first convex portion)
X80... Rotation axis 27... Concave portion (first concave portion)
24... Baffle plate part 35... Ventilating part 36... Non-ventilating part (blocking part)
29... Outer frame 25E... One end of the scraper far from the axis of rotation 20S... Reservoir R1... Rotational direction of rotary drum

Claims (6)

a rotating drum having a drying chamber for housing clothes and an outlet for communicating the drying chamber with the outside;
an air blower that introduces air into the drying chamber and discharges it from the outlet;
a filter device that catches foreign matter generated from the clothes in the drying chamber in front of the discharge port,
The filter device is provided so as to cover the discharge port and is capable of filtering the foreign matter;
a filter guard provided closer to the drying chamber than the filter and protecting the filter while allowing the air to pass through the filter;
The filter guard includes a scraper that contacts the surface of the filter;
a convex portion protruding toward the drying chamber and capable of coming into contact with the clothes being agitated in the drying chamber;
A clothes dryer configured such that the filter guard rotates around a rotation axis perpendicular to the surface of the filter so that the scraper scrapes the foreign matter from the surface,
A recess recessed from the filter side to the drying chamber side is formed in the protrusion,
The scraper is configured to collect the scraped foreign matter in the recess,
The clothes dryer according to claim 1, wherein the filter guard includes a baffle plate portion that restricts movement of the foreign matter collected in the concave portion due to rotation of the filter guard. The filter has a ventable portion and a non-ventilable portion,
2. The clothes dryer according to claim 1, wherein the concave portion is positioned on the drying chamber side of the non-ventilated portion. The filter guard includes an outer frame extending along the outer periphery of the filter,
The baffle plate portion extends so as to connect one end of the scraper remote from the rotation axis and the outer frame,
3. The clothes dryer according to claim 1, wherein said outer frame, said scraper, said concave portion and said baffle plate portion constitute a storage portion for storing said foreign matter scraped by said scraper. The filter has a ventilation part that allows ventilation, and an annular non-ventilation part that surrounds the ventilation part and does not allow ventilation,
The recess is located on the drying chamber side of the non-ventilation section,
4. The clothes dryer according to claim 3, wherein the storage section is composed of the outer frame, the scraper, the recess, the baffle plate section, and the non-ventilation section. 5. The clothes dryer according to any one of claims 1 to 4, wherein the filter guard rotates when the convex portion comes into contact with the clothes and is pushed in the same direction as the rotational direction of the rotating drum. a rotating drum having a drying chamber for housing clothes and an outlet for communicating the drying chamber with the outside;
an air blower that introduces air into the drying chamber and discharges it from the outlet;
A filter device for a clothes dryer that is applied to a clothes dryer comprising:
a filter provided to cover the outlet and capable of filtering the foreign matter;
a filter guard provided closer to the drying chamber than the filter and protecting the filter while allowing the air to pass through the filter;
The filter guard includes a scraper that contacts the surface of the filter;
a convex portion protruding toward the drying chamber and capable of coming into contact with the clothes being agitated in the drying chamber;
The scraper is configured to scrape the foreign matter from the surface by rotating the filter guard around a rotation axis perpendicular to the surface of the filter,
A recess recessed from the filter side to the drying chamber side is formed in the protrusion,
The scraper is configured to collect the scraped foreign matter in the recess,
A filter device for a clothes dryer, wherein the filter guard includes a baffle plate portion that restricts movement of the foreign matter collected in the concave portion due to rotation of the filter guard.

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