JP3257477B2 - 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 the structure of a clothes dryer, and more particularly to the structure of a drum for storing clothes, which can contribute to improving the productivity of the clothes dryer.

[0002]

2. Description of the Related Art In a conventional clothes dryer, a drum 3 for storing clothes is, as shown in FIG.
1c, a front drum body 3-1a forming a front side, a drum body part 3-1b forming a central part, and a drum rear body 3-2 forming a rear side, each of which is fixed by caulking or the like, In addition, the drum 3 is configured by providing a bearing portion 3-1c at the drum front body 3-1a.

[0003] In the case of the conventional clothes dryer constructed as described above, the drum front body 3-1a and the drum body 3-1b are separate parts, and there is an operation such as caulking, which is expensive. Had become something. Further, the drum body 3-1b has a shape in which a thin plate is simply rounded, has a low strength, and has a problem that the productivity is extremely poor due to deformation at the time of transportation to the next step in manufacturing.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the productivity of the conventional drum of this type of clothes dryer as described above and to provide it at low cost.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a drum for storing and rotating warm air.
In a clothes dryer for supplying clothes and drying the clothes,
The drum is composed of a drum body and a drum rear body,
The drum body is crimped into a cylindrical shape, and the drum body is
A bearing portion having a diameter smaller than that of the drum body
It is characterized by being formed integrally with the body.

[0006]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of a clothes dryer according to one embodiment of the present invention.

Clothes are stored inside the outer frame 1 and the outer frame 1
The drum 3 is rotated by a motor 4 attached to the drum base via a motor base 4-1 via a drum driving pulley 4-2 and a drum belt 15 tensioned by a tension applying pulley 13 to agitate the clothes. The drum support 17 attached to the outer frame front plate 1-1 of the outer frame 1 includes:
The rear side is connected to a drum shaft 9-1 fixed to a drum fan support plate 9 attached to the rear of the outer frame body 1 and a drum bearing 3-3.
It is rotatably supported and installed via. A baffle 3-5 for stirring the clothes efficiently is provided inside the drum 3.
Is protruding.

Here, the configuration of the drum 3 will be described in detail. The drum 3 includes a drum trunk 3-1 integrally provided with a bearing 3-8 at the front of the drum 3, and a drum rear 3-2 fixed at the rear by caulking the outer periphery.
The diameter of the bearing 3-8 is smaller than that of the drum body 3-1. The drum trunk 3-1 has a small diameter bearing 3-8, so that the drum trunk 3-1 and the bearing 3
At -8, a step is formed, and the step improves the strength. In order to further increase the strength, a reinforcing rib 3-6 may be added as shown in FIG. 2, or a curling portion 3-7 may be provided at the foremost portion of the bearing 3-8 as shown in FIG. . The curling portion 3-7 also plays a role of protecting the edge of the steel plate. Further, as a method of manufacturing the drum body 3-1 and the bearing 3-8, the drum body 3-1 and the bearing 3-8 are formed by pressing into a cylindrical shape as shown in FIG. 4 or crimped into a cylindrical shape as shown in FIG. May be partially extruded. At this time, as shown in FIG. 6, it is preferable that the protrusion of the crimped portion is set to the outside in the bearing portion 3-8, and the protrusion is set to the inside in the drum body 3-1 on which the drum belt 15 is hung. This switching should be performed smoothly within a range that has no effect.

Reference numeral 2 denotes a door which is opened and closed when clothes are taken in and out of the drum 3, and is supported by the outer frame front plate 1-1.

A fan casing 8 and a fan 6 housed in the fan casing 8 are provided behind the drum exhaust port 3-4 of the drum 3. The fan casing 8 is fixed to the drum / fan support plate 9, and the fan 6 is rotatably supported by a fan shaft 9-2 fixed to the drum / fan support plate 9. The fan 6 is rotated by the motor 4 via a fan drive pulley (not shown) attached to the motor 4 and a fan belt 10. Here, the fan 6 divides the fan casing 8 into a circulation side A and a cooling side B on the front and back by a partition plate 7, circulates the air in the drum 3 on the circulation side A, and the outer frame on the cooling side B. A back plate intake port 14-provided on a back plate 14 covering the rear surface of the body 1.
This is a so-called heat exchange type of front and rear two-wing type in which outside air is sucked in and exhausted through the air outlet 1 and the back plate exhaust port 14-2.

Reference numeral 5 denotes a heating element for supplying warm air, which is provided below the drum support 17 and immediately before the drum intake port 17-1. Reference numeral 16 denotes a lint collecting device that collects dust such as lint generated from clothes in the drum 3, and is provided immediately before the drum exhaust port 3-4 of the drum 3 and has a collecting net 19-1. It is detachably attached to the filter support base 19.

The casing discharge port 8 of the fan casing 8
-1 and the drum intake port 17-1 are connected while maintaining airtightness by a circulation duct 11 and a circulation duct front 12 having a drain port 11-1 on the way. Thus, the air in the drum 3 is changed from the drum 3 to the lint collecting device 16 to the drum exhaust port 3.
-4 → fan casing 8 (circulation side A) → casing discharge port 8-1 → circulation duct 11 → front of circulation duct 12 → heating element 5 → drum intake port 17-1 (hot air outlet) → drum 3
And a circulation wind system is formed.

Reference numeral 18 denotes a control device for controlling the operation of the motor 4, the heating element 5 and the like, and is attached to the outer frame front plate 1-1 via a panel 18-1.

The portion of the partition plate 7 will be described in detail.
A so-called labyrinth having a configuration in which a comb-shaped rib integrally provided on the outer circumference of the fan 6 and a rib having the same cross-section provided on the partition plate 7 are unevenly engaged with each other in a non-contact state. It has a seal configuration.

Thus, when the clothes dryer according to the embodiment of the present invention thus constructed is operated, when the motor 4 and the heating element 5 are energized, the motor 4 starts rotating.
The drum 3 and the fan 6 are respectively rotated, the heating element 5 generates heat and warm air is supplied into the drum 3, and the stored and stirred clothes are dried.

The moisture evaporating from the clothes passes through the lint collecting device 16 together with the circulating wind, and flows into the circulation side A of the fan casing 8 through the drum exhaust port 3-4. Back plate 1
4 allows the outside air to flow through the fan casing 8 through the rear plate intake port 14-1.
To the cooling side B, and is exhausted from the back plate exhaust port 14-2. In the outer peripheral portion of the fan 6, the circulating air and the cooling air are separated by a labyrinth seal portion with the partition plate 7 without entering and exiting. The heat contained in the circulating wind is condensed to form water, which flows into the circulation duct 11 through the casing discharge port 8-1 of the fan casing 8, and is discharged out of the machine through the drain port 11-1. Is done. Thus, a series of drying operations of the clothes dryer are continued. In this series of drying steps, dust such as lint generated from clothes in the drum 3 is collected by the lint collecting device 16 and does not enter thereafter.

The clothes dryer according to the present invention, as described above,
Since the drum 3 is composed of the drum body 3-1 integrally provided with the bearing portion 3-8 at the front portion and the drum rear body 3-2 fixed by caulking the outer periphery at the rear portion, The number of parts is small, the number of manufacturing steps is small, and it can be inexpensive. Since the diameter of the bearing 3-8 is smaller than that of the drum body 3-1, a step is formed between the bearing 3-8 and the drum body 3-1. When the drum trunk 3-1 is transported to the next step during manufacturing, there is little possibility that the drum trunk 3-1 is deformed, transportation is facilitated, and productivity can be increased. And
When the reinforcing ribs 3-6 are provided, the effect can be further enhanced.

Also, foreign matter such as sand may adhere to the clothing, and the foreign material separates from the clothing during the drying operation,
Intrusion into the bearing portion 3-8 causes a failure such as locking of the bearing portion 3-8, but in the present invention, as described above, between the bearing portion 3-8 and the drum body 3-1. Since a step is formed, foreign matter is prevented from entering the bearing 3-8 at the step, so that a failure can be prevented.

[0021]

As described above, according to the present invention, it is possible to provide a clothes dryer with a small number of parts, good productivity, low cost, and few troubles.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of a drum according to another embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a drum according to another embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a drum according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a drum according to another embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a drum according to another embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a conventional drum.

[Explanation of symbols]

3. Drum, 3-1 and 3-1b ... drum trunk, 3-2 ...
Drum rear body, 3-6: Reinforcing rib, 3-7: Curling part, 3-8, 3-1c: Bearing part, 3-1a: Drum front plate.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsuneshi Komatsu 1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Electrical Equipment Division, Taga Headquarters (72) Inventor Shinji Seya Higashi-shi, Ibaraki 1-1-1 Tagacho Hitachi, Ltd. Electrical Equipment Division, Taga Headquarters (56) References JP-A-6-154484 (JP, A) JP-A 64-72796 (JP, A) −29433 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/02

Claims (4)

(57) [Claims] 1. A clothes dryer for drying clothes by supplying warm air to a rotating drum for storing and rotating the clothes, wherein the drum comprises a drum body and a drum rear body, wherein the drum body is provided.
Is crimped into a cylindrical shape.
Clothes dryer, characterized in that the bearing portion becomes small diameter was formed <br/> integrally with the drum body portion from the drum barrel. 2. The clothes dryer according to claim 1, wherein a rib is formed in the drum body in a radial direction. 3. The clothes dryer according to claim 1, wherein the drum body and the bearing are formed by pressing integrally. 4. The clothes dryer according to claim 1, wherein the shaft is
Clothes dryer characterized by curling the front end of the receiving part outward .