JP3166364B2 - 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 and, more particularly, to a lint collecting apparatus excellent in continuous collecting property.

[0002]

2. Description of the Related Art A rotating drum type clothes dryer has a problem in that a drying operation is hindered, such as lint and the like generated from clothes entering a circulating air path when the clothes are dried, thereby blocking the air path and prolonging a drying time. A lint collecting device is provided in the circulation air passage after passing through the clothes by combining a net-like filter or the like. The location of the lint collecting device is downwind that has passed through clothing,
That is, it is generally provided on the rear surface of the rotating drum.

[0003] The lint collected by the lint collecting device causes a pressure loss in the circulating air passage, causes a decrease in the amount of circulating air, and causes a decrease in drying function. Need to be removed.

The filter of the lint collecting device is generally composed of a mesh-shaped front filter, a thick middle filter such as a non-woven fabric, and a mesh-shaped rear filter.
The mesh filter has a so-called sandwich construction in which the outer periphery is formed in a ring shape with a thermoplastic resin or the like, and sandwiched by using the elasticity of the filter such as a nonwoven fabric, so that lint (hereinafter, referred to as lint) is blown through. To prevent

[0005]

[0006]

SUMMARY OF THE INVENTION In the above prior art, an initial
In general, the packing effect can be obtained by the elasticity of the nonwoven fabric,
By using for a long time (cleaning and removing the filter)
Reduction of the packing effect, lint spraying, and in the circulation air passage
Lint accumulates in the water, causing water leakage due to clogging of the drainage of dew condensation water.
Rubbing or reducing the passage area of the semiconductor heater.
This was a factor that prevented continuous normal operation. Of the present invention
The purpose is to blow lint that hinders continuous normal operation.
To prevent injuries.

[0007]

An object of the present invention is to provide a front filter for preventing blow-through of lint and the like generated from clothing,
In the medium filter, clothes drying machine provided with a lint collecting device consisting of a rear filter, wherein in the filter is configured as a nonwoven fabric, a peripheral ring formed integrally made of synthetic resin on the outer peripheral portion, the inner peripheral side of the outer peripheral ring And the medium filter
A concave portion is formed at the boundary, and the outer peripheral ring is sandwiched so as to make surface contact with the outer peripheral ring made of a synthetic resin formed on the front filter and the rear filter.

[0008]

In other words, when the outer peripheral ring portions of the front, middle, and rear filters are overlapped, airtightness can be maintained permanently due to surface contact, and the lint of the filter can be reliably fixed on each filter surface without causing lint blow-through. Capture is possible.

[0009]

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

FIG. 1 is a sectional view of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a sectional view of a lint collecting device, and FIG. 3 is a sectional view of a middle filter.

Inside the outer frame 1, the rotating force of a motor 3 attached via a motor base 2 provided on the upper portion of the outer frame 1 is given tension by a drum driving pulley 4 and a tension pulley 5. The rotational force is transmitted to the drum 7 by the drum belt 6. The drum 7 for stirring clothes has a drum shaft 9 having a front side fixed to a drum support 9 attached to an outer frame front plate 8 of the outer frame 1 and a rear side fixed to a support plate 10 attached to the rear of the outer frame 1. 11 is rotatably supported and installed via a drum bearing 12. Behind the drum 7, a fan casing 13 and a two-wing fan 14 housed in the fan casing 13 are provided. The fan casing 13 is fixed to the support plate 10, and the two-wing fan 14 is rotatably supported by a fan shaft 16 fixed to the support 10. The two-wing fan 14 is driven by the motor 3 by a fan driving pulley, a fan belt 17 and the two-wing fan 1.
4 is rotated by a fan driven pulley 18 provided in the motor 4. Here, the two-wing fan 14 is air-tightly separated into a circulation side and a cooling side on the front and back sides by a non-contact sealing type partitioning device 19 on the outer periphery, and circulates air in the drum 7 on the circulation side. , On the cooling side, inhalation of outside air,
It is a front and back wing type that exhausts.

A heating element 20 for supplying warm air is installed at a blow-out port 21 provided with a ventilating hole substantially below the drum support 9 to allow air to pass through a large number of pores. And a semiconductor heater that generates heat. Heating element 2
A heater cover 22 is installed on the opposite side with respect to the air outlet 0, and a part thereof is airtightly connected to a discharge port 25 on the circulation side of the fan casing by a circulation duct 24 provided with a drainage port 23 at a lower part. Make up the part. A guard 2 is provided on the rear surface of the drum 7.
6, a lint collecting device 30 including a front filter 27, an inner filter 28, and a rear filter 29 for accommodating them is detachably mounted.

On the outer frame front plate 8 of the outer frame 1, a door 3 for taking in and out of clothes into and out of the portion of the drum 7 corresponding to the opening 31 is provided.
2 is attached so that opening and closing are possible.

FIG. 2 is a sectional view of the lint collecting device 30. As shown in FIG. A mesh filter 29a is provided at the center, and a guard 26 is provided at the outer periphery. In addition, guard 26
The front filter 27 having a mesh filter 27a, the outer periphery of which has a ring configuration, and the non-woven fabric filter 28a having the same outer periphery of a ring configuration are each formed as a middle filter 28. It is installed to become.

FIG. 3 is a sectional view of the middle filter 28,
FIG. 4 is an enlarged view of the portion. Although the nonwoven fabric filter 28a originally has a substantially uniform thickness, the concave portion 28c and the concave portion 28d are used to form the outer peripheral ring 28b.
To form The outer peripheral ring 28b is manufactured by an injection molding method or the like using the nonwoven fabric filter 28a as an insert material. That is, in FIG. 5, the nonwoven fabric filter 28a which is an insert material in the upper mold and the lower mold of the molding die indicated by the two-dot chain line.
Is pressed down by the protrusions of the mold for forming the concave portions 28c and 28d, and the resin is poured into the gap between the mold forming the outer peripheral ring 28b and the nonwoven fabric filter 28a.
Of course, the nonwoven fabric filter 28 located on the outer peripheral ring 28b
The resin also flows inside a, and a predetermined outer peripheral ring 28b is formed. However, in the concave portion 28d, the dimension between the apexes of the upper mold and the lower mold substantially in the R-shape does not leave a void in the nonwoven fabric filter 28a, that is, since the nonwoven fabric filter 28a is compressed so that resin does not flow, the D of the nonwoven fabric filter 28a is reduced. Within the dimensions, the filter function is not impaired.

The operation of the clothes dryer of the present invention configured as described above will be described. The motor 3 and the heating element 20 are energized, and the two-wing fan 14 and the drum 7 rotate. The air in the drum 7 is circulated by the double-wing fan 14 from the drum 7 to the lint collecting device 30 to the fan suction port 33 to the fan casing discharge port 25 to the circulation duct 24 to the heating element 20 to the outlet 21 and the drum 7 as indicated by an arrow. Circulate the route. Warm air is applied to the clothes in the drum 7 to evaporate the water content of the clothes and circulate high-temperature, high-humidity (about 55 ° C., 99%) air. Further, on the cooling side of the two-wing fan 14, outside air is taken in and exhausted. As a result, heat is exchanged between the circulating air and the outside air on the front and back of the two-wing fan 14, and the circulating air is condensed and discharged as moisture from the drain port 23 provided in the circulation duct 24 on the circulation side to the outside of the machine to dry the clothes. Done. The lint generated from the clothes is removed from the lint collecting device 30 in the front filter 2 when the drying operation is advanced and the degree of drying of the clothes is about 90%.
7 and the lint that has passed through the front filter 27 is collected and deposited on the middle filter 28, and the drying operation is completed.

Lint generated from clothing is from several tens of μ to several
mm, the lint cannot be reliably collected by the lint collecting device 30, that is, when leakage is not prevented between the filters, lint is particularly generated in the pores of the heating element 20 in the circulation air passage. Clogging, circulating air volume is reduced, calorific value is reduced, and continuous drying operation cannot be performed.
There is a danger of water leakage and electric shock due to the lint clogging of No. 3. However, when the filters are overlapped, the thrust surface of the outer peripheral ring is securely brought into surface contact with the rear filter 29 and the pressing force by the claw fitting of the guard 26, and airtightness can be maintained permanently, and the lint Lint can be collected on each filter surface without blow-by. Further, the nonwoven fabric filter 28a having a thickness of about 5 mm is formed by pressing the mold with an R-shaped protrusion to prevent resin leakage when the outer peripheral ring 28b is formed. Does not hurt.

[0018]

According to the present invention, continuous normal operation is prevented.
It is possible to prevent the lint from blowing away.

[Brief description of the drawings]

FIG. 1 is a sectional view of one embodiment of the present invention.

FIG. 2 is a sectional view of a lint collecting device.

FIG. 3 is a sectional view of a middle filter.

FIG. 4 is a sectional view of a middle filter.

FIG. 5 is a sectional view of a molding die.

[Explanation of symbols]

27 front filter, 28 middle filter, 29 rear filter, 30 lint collecting device, 28a outer peripheral ring.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-174700 (JP, A) Jikken 47-20742 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/22

Claims (1)

(57) [Claims] 1. A clothes dryer provided with a lint collecting device including a front filter, a middle filter, and a rear filter for preventing blow-through of lint and the like generated from clothes, wherein the middle filter is configured as a nonwoven fabric. Is formed integrally with an outer peripheral ring made of synthetic resin on the outer peripheral portion.
A concave portion is formed, and the outer peripheral ring is sandwiched so as to make surface contact with the outer peripheral ring made of a synthetic resin formed on the front filter and the rear filter.