JP3011580B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer for heating and drying clothes in a rotating drum, and more particularly to a structure of a filter device which is detachably attached to an exhaust port of the rotating drum.

[0002]

2. Description of the Related Art As a prior art, a drum into which clothes are put is rotatably supported in a machine frame, and a circulation air passage communicating with the drum through a hot air outlet at a rear portion and a hot air inlet at a front portion is provided. A circulation fan and a heater are disposed in the circulation air passage, while the outside air flows from one side to the back side of the drum, and the air from the hot air outlet flows to the opposite side. 2. Description of the Related Art A dehumidification-type clothes dryer that includes an exchange-type double-sided fan and circulates while drying a drying air while drying clothes is known as disclosed in Japanese Patent Publication No. 61-41239.

[0003] At the hot air outlet of the rotating drum, lint such as cotton lint and lint generated due to drying of clothes is taken out of the rotating drum by the circulating wind and tangled with a shaft support portion and a double-sided fan to rotate. A filter device is provided to prevent trouble.

The filter device includes a first filter as shown in, for example, JP-A-5-49794,
It consists of a second filter and a filter cover that covers the second filter. An auxiliary filter, such as a disposable paper filter, is attached between the filter cover and the frame member on which the second filter is stretched. As much as possible, the filter function will be more thorough.

[0005] Here, in a filter device having a structure in which a disposable paper filter can be mounted while being sandwiched between the frame member of the second filter and the filter cover, the filter cover is not completely fixed and is not rotated. In such a situation, the paper filter may bend or wrinkle, causing it to no longer function as a filter. Alignment is correct and the filter cover is fixed.

[0006]

[0007]

However, to prevent the filter cover from rotating to protect the auxiliary filter,
In the conventional device, a detent means having a complicated structure is required, and since the fitting between the filter cover and the frame member of the second filter is directional and the mounting direction is limited, the operation relating to attachment and detachment is inconvenient. There was a problem.

[0008]

[0009] The present invention has been made in view of the above, it is easy removable but not limited to the mounting direction of the full Irutakaba and auxiliary filter can be mounted without causing such wrinkled clothes dryer The purpose is to provide.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided a
Machine frame with entrance formed and rotatably installed in this machine frame
Drying the clothes input from the clothes input port
Rotating drum for exhaust and removable to the exhaust port of this rotating drum
Clothes dryer equipped with a filter device
And the filter device is provided with an exhaust port of the rotary drum.
Filter net attached so as to cover the inside from the inside
And a second filter net.
And detachably attached to the filter fixing frame
A filter substrate that can be
Is detachably attached to the filter fixing frame body,
It consists of a filter cover with multiple vents,
Assistance between the filter cover and the filter base
While holding the filter so that it can be attached,
In the filter base, the auxiliary filter is provided in front of the filter base.
A positioning rib for determining a position for covering the second filter net;
At a position outside of the filter cover,
When facing in any mounting direction to the base body
The filter is provided so as to be engageable with any of the ventilation holes.
-When the filter cover is attached to the base,
Engaging with any one of the vent holes facing the
Specially formed projections to prevent the cover from rotating.
It is a sign.

[0011]

When the filter cover is fitted to the filter base according to the above configuration, the projections of the filter base are caught by any of the vent holes in many of the filter covers, and the filter cover is prevented from rotating. At this time, there is no limitation on the mounting direction of the filter cover and the filter base, and the mounting and dismounting can be performed smoothly.

The auxiliary filter such as a paper filter set on the filter substrate can be reliably held between the filter cover and the filter without wrinkling or bending.

[0013]

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a machine frame of the clothes dryer 2;
A clothing input port 3 is formed at the center of the front of the garment. Reference numeral 4 denotes a rear cover fixed to the rear surface of the machine frame 1. An outside air inlet 5 is provided in the center of the cover, and a outlet 6 for the introduced outside air is provided at a lower portion of the machine frame 1. Is provided.
Reference numeral 7 denotes a door that opens and closes the clothing input port 3. Clothes are opened and closed to put the clothing into a rotatable drum described later. The machine frame 1 is provided with an annular sheet metal drum support plate 8 which is attached so as to surround the clothes input port 3 and rotatably supports the drum.

On the other hand, at the rear of the machine casing 1, a partition plate 9 is provided on the inner side of the rear of the machine cover 1 so as to be spaced from the rear cover 4, and the rear end of the partition plate 9 has the rear end. Fan casing 10 fixed in contact with cover 4
The inside of the machine frame 1 is partitioned into a drying chamber 11 and a fan chamber 12 by the fan casing 10 and the partition plate 9. Reference numeral 13 denotes a rotating drum formed of a synthetic resin disposed in the machine frame 1, that is, the drying chamber 12,
The inner peripheral edge of the front portion is rotatably supported on the outer peripheral edge of the annular drum support plate 8 via felt or the like, and the center of the rear surface is rotatably supported by the support shaft 15. An exhaust port 14 is formed in the center of the rear surface of the rotating drum 13. Here, a filter device 15 is detachably attached to the rotating drum 13 from the inside so as to cover the exhaust port 14. The present invention relates to the structure of the filter device 15 and will be described later in detail.

Reference numeral 16 denotes a drying air inlet corresponding to the exhaust port 14, and is formed below the drum support plate 8. On the other hand, the partition plate 9 is provided with a communication port 17 for communicating the drying chamber 11 and the fan chamber 12, and the air coming out of the exhaust port 14 passes through the communication port 17, and the drying air flows through a circulating air duct described later. The air enters the rotary drum 13 through the air inlet 16. Then, the wind coming out of the exhaust port 14 does not leak outside, and
An annular seal member 18 slidably in contact with the partition plate 9 is fixed to the rear surface of the rotary drum 13 so that the partition member 9 can be fed from the fan chamber 12 to the fan chamber 12.

In the fan chamber 12, a double-sided fan 19 made of synthetic resin rotatably supported at the rear of the support shaft 15 via a bearing metal is provided. In the double-sided fan 19, a circulation fan 20 located on the drying chamber 11 side and a cooling fan 21 located on the rear cover 4 side are formed radially integrally with each other, and
A pulley 22 is provided at the center of the cooling fan 21 side. Reference numeral 23 denotes a partition casing made of a synthetic resin provided around the fan casing 10 so as to surround the double-sided fan 19. The double-sided fan 19 is accommodated in a central circular opening of the partition casing 23 to accommodate the double-sided fan 19. The partition casing 23 and the double-sided fan 19 cooperate to form a drying air passage 24 and a cooling air passage 25 inside the fan chamber 12.
And divided into

On the periphery of the double-sided fan 19, concentric rotating groove groups 26 opening toward the drying air passage 24 are provided.
A concentric fixed groove group 27 that opens toward the cooling air passage 25 is formed integrally with the inner peripheral edge of the partition casing 23, and the rotating groove group 26 is formed integrally with the fixed groove group. 27 are loosely fitted to each other in a non-contact state. That is, the rotation groove group 26 and the fixed groove group 27 form a labyrinth connection. 28 is the drying air passage 2
4 is a circulating air duct that communicates with the drying air inlet 16. In the circulating air duct 28 near the drying air inlet 16, a semiconductor heater 29 having a honeycomb shape made of a ceramic material and having a positive temperature resistance characteristic is provided. Is provided. Reference numeral 30 is provided at the lowermost part of the circulating air duct 28, a drain port for discharging dehumidified water condensed in the duct to the outside of the machine, 31 is a drive motor, and a small pulley 32 is connected to the pulley 22;
Connected via a belt 33, and connected to the rotating drum 13 via a pulley 34 and a belt 35, the rotational force of the drive motor 31 is transmitted to the rotating drum 13 and the double-sided fan 19. I have.

Next, the structure of the filter device 15, which is a feature of the present invention, the method of assembling the filter device 15, and the attachment to the exhaust port 14 will be described.

The filter device 15 is attached to the filter fixing frame 35 so as to cover the filter fixing frame 35 fixed to the rotating drum 13, the filter base 36 accommodated in the filter fixing frame 35, and the filter base 36. An auxiliary filter 38 (see FIG. 4) such as a disposable paper filter made of a commercially available tissue paper or the like is attached to the filter device 15 between the filter cover 37 and the filter base 36. It is possible.

The filter fixing frame 35 is made of a synthetic resin or the like, has an annular holding frame 39 at the periphery as shown in FIGS. 6 and 7, and has a cover 40 at the center. A first filter net 42 is stretched on each of the surfaces partitioned by crossing a plurality of bars 41 with the holding frame 39. A mounting screw 43 is provided at one position on the outer end of the cover 40.
And a plurality of locking pawls 44 for fixing are protrudingly provided on the back side of the outer peripheral portion near the annular holding frame 39.

The next filter base 36 is also formed of a synthetic resin or the like, and as shown in FIGS.
5 is extended in a substantially rectangular opening in which the crosspiece 46 extends in a cross shape, and has an annular engaging projection 47 formed on the periphery to protrude over the entire circumference.

On the surface side of the filter base 36 on which the auxiliary filter 38 is mounted, as shown in FIG. 48
b, 48b, a filter cover 37 described below is provided.
The projections 49, 49 which are engaged with the ventilation holes of the filter cover 37 to prevent the rotation of the filter cover when they are fitted to each other, are provided.

The filter cover 37 is also made of synthetic resin or the like, and has a large number of ventilation holes 51 as shown in FIGS.
2 are formed, and engagement projections 53 for engaging with the annular engagement projections 47 of the filter base 36 are provided at several locations on the inner peripheral side.

Therefore, to assemble the filter device 15, first, the filter fixing frame 35 is applied to the exhaust port 14 formed on the rear surface 13 b of the rotary drum 13 from the inside of the rotary drum 13. Here, the rear surface 13 of the rotating drum 13
8, a plurality of mounting holes 64 are drilled as shown in FIG. 8, and the locking claw pieces 44 of the filter fixing frame 35 are inserted and locked in the mounting holes 64, and the mounting screws 65 (see FIG. 7). ) Is screwed to the mounting screw portion 43, whereby the filter fixing frame 35 is mounted and fixed to the rotating drum 13.

Next, the auxiliary filter 38 is positioned and set on the filter base 36 by positioning ribs 48a and 48b. Next, the filter base 36 is fitted so as to cover the filter cover 37 (filter base 3).
6 may be attached so as to be fitted inside the filter cover 37). Then, as shown in FIG. 8, the projections 49, 49 of the filter base 36 engage with the ventilation holes 51 of the filter cover 37 to prevent the filter cover 37 from rotating, and at the same time, engage the filter base 36 with the filter cover 37. The projections 47 and 53 are fitted together, and both parts are integrated to assemble the filter body. The auxiliary filter 38 includes a plurality of arc-shaped pressing ribs 55 provided on the filter base 36 and pressing ribs 56 formed over the entire circumference from the back surface of the filter cover 37.
And it is clamped and fixed.

In this manner, the auxiliary filter 38 is positioned over the entire surface of the filter base 36 so as to cover the second filter net 45 by positioning its ends on the positioning ribs 48a and 48b of the filter base 36. The filter is detachably positioned between the filter cover 37 and the filter base 36, but the auxiliary filter 38 may not be used.

As described above, the filter cover 37 is fixed to the filter base 36 by using the ventilation holes 51 and engaging the projections 49, 49 of the filter base 36 with the filter cover 36. Since a large number of ventilation holes 51 are provided on the entire circumference of the filter cover 37, the filter cover 37 can be attached to the filter base 36 without being conscious of the attachment direction, so that the assembling work is simplified. .

Next, the filter cover 37 holding the filter base 36 therein is fitted so as to be accommodated in the filter fixing frame 35. Here, in the filter fixing frame 35, at several places on the inner peripheral side of the annular holding frame 39, FIG.
As shown in FIG. 5, a fixed spring 58 is attached and fixed by bending a stainless steel leaf spring member to form an elastic locking portion 58b at the upper end.

Therefore, the fitting projection 5 of the filter cover 37
2, the elastic locking portion 58b of the fixing spring 58 is hooked, and the filter cover 37 is fixed to the filter fixing frame 35, and the assembly of the filter device 15 is completed. At this time, the groove 61 provided annularly below the peripheral edge of the filter base 36 and the groove 62 formed annularly on the upper surface of the outer peripheral portion of the filter fixing frame 35 are fitted alternately. . The structure in which the grooves 61 and 62 are fitted alternately enhances the sealing effect of the contact portion between the filter base 36 and the filter fixing frame 35, thereby preventing leakage of circulating air.

Reference numeral 66 denotes a rib according to the second invention, which is integrally formed on the rear surface of the filter fixing frame 35 so as to protrude integrally therewith and is in pressure contact with the rear surface 13b of the rotary drum 13 as an attachment surface. Although the circulating air is prevented from directly leaving the drum 13 without passing through the filter device 15, the details will be described later.

When the clothes drying operation is started in such a configuration, the rotating drum 13 and the double-sided fan 19 are rotated by the operation of the drive motor 31, and the semiconductor heater 29 is heated.

When the double-sided fan 19 rotates, the drying air heated by the semiconductor heater 29 enters the rotating drum 13 through the drying air inlet 16 and heats and dries clothes in the rotating drum 13 to absorb moisture. It becomes hot and humid hot air, enters the drying air path 24 through the filter device 15, the exhaust port 14, and the communication port 17, and circulates in the order of the circulating side of the double-sided fan 19, the circulating air duct 28, and the semiconductor heater 29 for cooling. Due to the rotation of the double-sided fan 19, the external air enters the cooling air passage 25 from the inlet 5, passes through the cooling side of the double-sided fan 19, and is exhausted to the outside from the outlet 6.

The lint such as cotton dust generated by the drying operation of the clothes in the rotating drum 13 is captured by the auxiliary filter 38 (paper filter) mounted on the front side of the filter base 36 of the filter device 15. Since the auxiliary filter 38 has a fine eye, it can capture fine lint and does not stain the second filter net 45 with lint. Here, when the auxiliary filter 38 is not used, the lint is applied to the filter substrate 3.
6 is captured by the second filter network 45.

The high-temperature and high-humidity dry air exchanges heat with the external air by the double-sided fan 19, is cooled to condense the water, and is then reheated by the semiconductor heater 29 and is continuously supplied to the rotating drum 13. The condensed water is discharged from the drain 30.

On the other hand, when a large amount of lint is captured by the filter device 15, the filter device 15 is cleaned.
At this time, the finger is taken out by being hooked on the ventilation hole 68 which is larger than the ventilation hole 51 opened in the center part of the filter cover 37 or the like. Then, the fitting protrusion 52 of the filter cover 37 is disengaged from the elastic locking portion 58b of the fixing spring 58 of the filter fixing frame 35, and the filter base 36 and the filter cover 37 are integrated.
That is, the filter main body can be removed from the filter fixing frame 35. The detached filter body can be easily separated into the filter cover 37 and the filter base 36.

Accordingly, the filter cover 37 and the second filter net 45 of the filter base 36 can be cleaned, and the first filter net 42 of the filter fixing frame 35 attached to the rotary drum 13 can be cleaned. The cleaning can be done.

Further, if necessary, the filter fixing frame 35 may be completely removed by removing the mounting screw 65 and cleaning may be performed.

After cleaning, a new auxiliary filter 38 is set on the upper surface of the filter base 36 and the filter cover 3
7 is fitted to the filter base 36. At this time, the projections 49, 49 of the filter base 36 are engaged with any of the ventilation holes 51 of the filter cover 37 to prevent the filter cover 37 from rotating. The filter 38 does not bend or wrinkle, and the auxiliary filter 38 can be easily mounted in a good mounting state.

Thereafter, when the filter body is fitted into the filter fixing frame 35, the fitting projection 52 and the fixing spring 5 are again fitted.
By being engaged with 8, mounting and fixing can be performed with one touch.

Next, according to the second aspect of the present invention, it is possible to seal simply by mounting the filter device without mounting a seal between the filter device and the mounting surface of the rotating drum to which the filter device is mounted as in the conventional case. The seal structure according to the invention will be described.

As shown in FIG. 8, the filter fixing frame 3
A rib 66 having a triangular cross section is formed on the entire periphery on the outer periphery of the back surface of the fifth member.

In the filter device 15, the filter fixing frame 35 is mounted and fixed directly on the mounting surface of the rotary drum 13, that is, on the drum rear surface 13b. In the past, packing was interposed between the mounting surfaces. However, in the present invention, when the filter fixing frame 35 is attached to the rotary drum 13, the top of the rib 66
3b and can be sealed.

As a result, even if the circulating air containing the lint enters the gap as shown by the dotted arrow in FIG. 8, the circulating air further enters through the rib 66 surrounding the exhaust port 14. Instead, only the circulating air shown by the solid line arrow passing through the filter device 15 is emitted from the exhaust port 14 to prevent the circulating air containing lint for clogging the semiconductor heater 29 from being directly exhausted to the outside of the drum 13. The structure can be easily formed.

[0046]

As described above, according to the present invention, a filter device detachable in a rotary drum comprises a filter fixing frame which can be separated from each other, a filter base and a filter cover, and a disposable paper. A filter or the like can be mounted between the filter base and the filter cover fitted to the filter base, and when reassembling the filter base and the filter cover separated by cleaning or the like, the filter cover has projections provided on the filter base all around. The ventilation holes are used to lock and prevent rotation, so there is a degree of freedom in the mounting direction between the filter cover and the filter base, making it easy to attach and remove both members without being aware of the mounting direction. In addition, the fixing means can be achieved with a simple one using a vent instead of a complicated locking structure as in the past. Moreover, the auxiliary filter can be securely held without causing bending or wrinkling, and can be easily replaced and mounted.

[0047]

[Brief description of the drawings]

FIG. 1 is a side sectional view of the entire clothes dryer according to the present invention.

FIG. 2 is a plan view of a filter cover.

FIG. 3 is a semi-longitudinal side view of a filter cover.

FIG. 4 is a plan view of a filter substrate.

FIG. 5 is a semi-longitudinal side view of a filter substrate.

FIG. 6 is a plan view of a filter fixing frame.

FIG. 7 is a semi-longitudinal side view of the filter fixing frame.

FIG. 8 is a sectional side view of a main part of the filter device.

[Explanation of symbols]

 2 Clothes dryer 13 Rotary drum 15 Filter device 35 Filter fixing frame 36 Filter base 37 Filter cover 38 Auxiliary filter 49 Projection 51 Vent hole 66 Rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-49794 (JP, A) JP-A-4-77030 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/02

Claims (1)

(57) [Claims] A machine frame having a clothes input port formed on a front surface thereof;
A clothes dryer rotatably provided in the machine frame and provided with a rotating drum for drying clothes introduced from the clothes inlet, and a filter device detachably attached to an exhaust port of the rotating drum. in the filter device includes a filter fixing frame body having a first filter network attached as to cover the exhaust port of the rotary drum from the inside, detachably to the filter fixing frame member and having a second filter network A filter base, which is attached, and a filter cover that is detachably attached to the filter fixing frame body so as to cover the filter base and has a large number of ventilation holes, and an auxiliary filter is provided between the filter cover and the filter base. while the sandwich to be mounted and the structure, Oite the filter base, the auxiliary Iruta previous
A positioning rib for determining a position for covering the second filter net;
At a position outside of the filter cover,
When facing in any mounting direction to the base body
The filter is provided so as to be engageable with any of the ventilation holes.
-When the filter cover is attached to the base,
A clothes dryer, wherein a protrusion is formed to engage with any one of the air holes facing to prevent rotation of the filter cover.