JP3234501B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dehumidifying clothes dryer.

[0002]

2. Description of the Related Art Conventionally, this type of clothes dryer has a structure as disclosed in Japanese Patent Publication No. 6-59360 (D06F58 / 02).

[0003] In this clothes dryer, a drying air passage and a cooling air passage are partitioned by a heat exchange type double-sided fan provided opposite to the outlet of the drying chamber and a partition plate covering the outer peripheral portion of the double-sided fan. By the rotation of the two-sided fan, the drying air is circulated between the drying air path and the outside air as cooling air and guided into the cooling air path. We try to remove moisture in the wind. The drying air from which water has been removed is reheated by a heater and supplied to the drying chamber.

The space between the two-sided fan and the partition plate is sealed by a non-contact type labyrinth connection having a good sealing effect. That is, on the inner peripheral portion of the partition plate, there are provided a plurality of cylindrical grooves which are formed of a plurality of cylindrical walls and open to the cooling air passage side, while the outer peripheral portion of the double-sided fan has a plurality of cylindrical walls. A group of rotating grooves, which are constituted by walls and open to the drying air path side, are provided. Then, the cylindrical wall of each of the rotating groove group and the fixed groove group is loosely fitted in the opening of the other groove group in a non-contact state, thereby forming a labyrinth coupling portion.

[0005] As a material of these double-sided fans (including a group of rotating grooves) and a partition plate (including a group of fixing grooves), copolymers (copolymers) containing a rubber component commonly used in synthetic resin products are generally used. ) Polypropylene was used.

[0006]

However, in a conventional clothes dryer, if clothes such as machine oil or edible oil are frequently dried, a double-sided fan or a partition plate is removed in a relatively short period of time. Deformation may occur, and the rotating groove group and the fixed groove group may come into contact with each other.

That is, the rubber component in the material of the double-sided fan and the partition plate is non-crystalline, and there is an interface between the rubber component and the polypropylene polymer constituting the crystal. When oil adheres to the material, the amorphous rubber component absorbs the oil, increasing its weight and expanding, causing the material to deform.

In addition, the expansion of the rubber component lowers the interfacial strength between the polypropylene polymer and the rubber component, so that the material itself may become brittle.

The present invention relates to an improvement in a clothes dryer, and solves such a problem. It is intended to prevent a double-sided fan and a partition plate from being deformed by oil adhering to clothes, and to form a rotary groove group. An object is to prevent contact with a group of fixing grooves.

[0010]

According to the present invention, there is provided a drying chamber for accommodating clothes, and a circulating air circulating through the drying chamber, the drying air being circulated through the drying chamber. A centrifugal double-sided fan that exchanges heat between the circulating drying air and the introduced cooling air, with the fan surface and the cooling fan surface that introduces and outputs the cooling air integrated on the front and back, and on the outer periphery of this double-sided fan A fixed groove group having an opposing inner peripheral portion, comprising a partition plate that separates a drying air path and a cooling air path together with a double-sided fan, and an inner peripheral portion of the partition plate formed by a plurality of cylindrical walls. And a rotating groove group constituted by a plurality of cylindrical walls is provided on the outer peripheral portion of the double-sided fan, and each of the cylindrical walls of the fixed groove group and the rotating groove group is opened by a mating groove group. in the clothes dryer loosely fitted in a non-contact state within the double-sided full Emissions and / or said partition plate or clothing
In order to suppress the deformation due to the adhesion of the oil, the material of the double-sided fan and / or the partition plate is made of a synthetic resin containing no rubber component, specifically, a homopolymer (homopolymer). )).

That is, in this configuration, since the double-sided fan (including the group of rotating grooves) and the partition plate (including the group of fixing grooves) do not contain a rubber component, they are not deformed by oil. Therefore, even if the operation to dry the garment to which oil adheres is performed frequently, the rotating groove group and the fixed groove group do not come into contact with each other.

[0012]

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

In FIG. 1, reference numeral 1 denotes a clothes dryer of the present embodiment. Reference numeral 2 denotes a housing, which is a metal machine frame 3 having front and rear surfaces opened, and a metal front plate 4 covering the front surface of the machine frame 3.
And a metal rear plate 5 that covers the rear surface of the machine frame 3.
The front plate 4 is provided with a clothing inlet 6.

A horizontal drum 7 is provided in the housing 2 as a clothes drying chamber, and is rotatably supported at the rear by a support shaft 8. An exhaust port 9 is provided in the center of the rear surface of the drum 7, and a lint filter 10 for collecting lint and the like is disposed in the exhaust port 9. Reference numeral 11 denotes a metal support plate provided on the back side of the front plate 4 and outside the input port 6 and supporting a front opening edge of the drum 7. An intake port 12 is provided below the support plate 11.

Numeral 13 denotes a drying air introduction duct attached to the support plate 11 on the inlet side of the intake port 12, and a heater 14 is disposed in the duct.

Reference numeral 15 denotes a door for opening and closing the input port 6, and upper and lower left and right ends of the clothes dryer 1 are rotatably supported when viewed from the front, and open to the left.

Reference numeral 16 denotes a fan casing provided behind the drum 7 and opposed to the exhaust port 9. The fan casing 16 includes a casing body 16a having an opening at the front center, and a metal front plate 16b attached to the opening and to which the support shaft 8 is fixed.

Reference numeral 17 denotes a heat exchange type double-sided fan fixed coaxially with the drum 7 by the support shaft 8 in the fan casing 16. Blades are integrally formed radially on both the front and back surfaces of the double-sided fan 17. The drum 7 side is a circulation fan surface 18 and the rear plate 5 side is a cooling fan surface 19.

Reference numeral 20 denotes a partition plate provided integrally with the casing body 16a so as to surround the outer periphery of the double-sided fan 17, and its inner peripheral portion is opposed to the outer peripheral portion of the double-sided fan 17. The partition plate 20 divides the inside of the fan casing 16 into a drying air passage 21 and a cooling air passage 22 together with the double-sided fan 17.

Reference numeral 23 denotes a communication port provided on the front plate 16b for communicating the exhaust port 9 with the drying air passage 21;
24 ensures that the drying air flowing out of the exhaust port 9 can
This is an annular seal member provided for guiding the first seal member.

Reference numeral 25 denotes an inlet provided at the center of the rear plate 5 for introducing outside air into the cooling air passage 22;
Is an outlet provided on the bottom surface of the machine casing 3 for extracting the introduced outside air.

Reference numeral 27 denotes a circulation duct connecting the drying air passage 21 and the introduction duct 13, and a discharge port 28 is provided at a lowermost position.

Reference numeral 29 denotes an induction motor, which is a drum pulley 3
0 and the drum 7 via a drum belt 31, and is connected to a pulley 34 of the double-sided fan 17 via a fan pulley 32 and a fan belt 33. Reference numeral 35 denotes an idler pulley.
By applying tension to 1, slip of the drum belt 31 is prevented.

Thus, during heating and drying, the motor 2
As the drum 9 rotates, the drum 7 rotates at a low speed and the double-sided fan 17 rotates at a high speed. The drying air generated by the rotation of the double-sided fan 17 and heated by the heater 14 circulates through the drying air passage 21, the circulation duct 27, the introduction duct 13, and the drum 7, and exchanges heat with the clothes in the drum 7. Do. At the same time, the outside air is introduced into the cooling air passage 22 by the rotation of the two-sided fan 17,
Cool itself. Then, heat exchange takes place in the drum 7 and the dry air that has absorbed moisture from the clothes contacts the double-sided fan 17 and is cooled, so that the moisture in the dry air is condensed. This condensed water flows down in the drying air passage 21 and is discharged from the discharge port 28.

Here, the space between the double-sided fan 17 and the partition plate 20 is sealed by a non-contact type labyrinth connection having a good sealing effect, and this structure will be described in detail with reference to FIG. .

On the outer peripheral portion of the double-sided fan 17, there are integrally formed a rotary groove group 37 which is constituted by four cylindrical walls 36 and opens to the drying air passage 21 side. This rotating groove group 3
7, the cylindrical wall on the center side of the two-sided fan 17
The outer peripheral wall surrounding the outer periphery of the blade of the double-sided fan 17 is also used.

On the other hand, on the inner peripheral portion of the partition plate 20, a fixed groove group 39 composed of four cylindrical walls 38 and opening toward the cooling air passage 22 is integrally formed.

The cylindrical walls 36 and 38 of the rotating groove group 37 and the fixed groove group 39 are loosely fitted in the openings of the mating groove group without contact. At this time, the outer peripheral wall which is the cylindrical wall 36 on the most central side of the rotating groove group 37 is located closer to the center than the cylindrical wall 38 on the most central side of the fixed groove group 39.

A vertical rib 40 is provided upright on the end of the cylindrical wall 38 on the most central side of the fixed groove group 39 and facing the outer peripheral wall of the rotating groove group 37. ing. This vertical rib 40 is formed along the circumferential direction of the groove,
The distance from the outer peripheral wall is reduced.

The double-sided fan 17 (rotating groove group 37)
) And the partition plate 20 (including the fixed groove group 39),
Further, the casing body 16a is made of a synthetic resin containing no rubber component, specifically, a homopolymer (homopolymer) polypropylene.

As described above, the double-sided fan 17 and the partition plate 2
0 is made of a homopolymer polypropylene containing no rubber component, so that even if the oil adhering to the clothes evaporates and adheres to the double-sided fan 17 or the partition plate 20, the double-sided fan 17 or the partition plate 20 is There is no such thing as deformation. Therefore, even if the operation to dry the clothes to which the oil adheres is performed frequently, the rotation groove group 37 and the fixed groove group 3
As a result, it is possible to prevent the oil adhering to the clothing from hindering the rotation of the double-sided fan 17 and causing noise.

The homopolymer polypropylene is
Although the low-temperature impact strength is lower than that of the copolymer polypropylene containing a rubber component, the double-sided fan 17 and the partition plate 20 do not require much low-temperature impact strength, so there is no practical problem.

In the above embodiment, the double-sided fan 17
Although both the partition plate 20 and the partition plate 20 are made of homopolymer polypropylene, in the present invention, only one of them may be made of homopolymer polypropylene.

[0034]

According to the construction of the clothes dryer of the present invention, the oil adhering to the clothes can be reduced by forming the double-sided fan and / or the partition plate with a synthetic resin containing no rubber component, for example, a homopolymer polypropylene. Even if it evaporates and adheres to the double-sided fan or the partition plate, the double-sided fan or the partition plate does not deform. Therefore, even if the oiled clothes are dried frequently, the rotating groove group and the fixed groove group can be prevented from coming into contact with each other, and as a result, the oil adhering to the clothes causes the double-sided fan to be out of contact. It is possible to prevent the rotation from being hindered or causing noise.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view of a main part showing a configuration of a labyrinth connection between a double-sided fan and a partition plate.

[Explanation of symbols]

 7 Drum (drying room) 9 Exhaust port (dry air outlet) 17 Double-sided fan 18 Circulating fan surface 19 Cooling fan surface 20 Partition plate 21 Dry air passage 22 Cooling air passage 36 Cylindrical wall of rotating groove group 37 Rotating groove group 38 Cylindrical wall of fixed groove group 39 Fixed groove group

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Koichi Kuroda 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Tamotsu Kawamura 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture No. 5 Sanyo Electric Co., Ltd. (72) Inventor Takashi Fukuda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-3-212292 (JP, A) JP-A-3-212292 JP-A-3-55099 (JP, A) JP-A-62-186899 (JP, A) JP-A-3-212294 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58 / 02-58/08

Claims (2)

(57) [Claims] 1. A drying chamber for accommodating clothes, a circulating fan surface for circulating the drying air to the drying chamber, the cooling fan being introduced to the drying chamber, and cooling air being introduced into the drying chamber. A cooling fan surface to be led out is provided integrally on the front and back, and has a centrifugal double-sided fan that exchanges heat between the circulating drying air and the introduced cooling air, and an inner peripheral portion facing the outer peripheral portion of the double-sided fan. A partition plate for separating a drying air passage and a cooling air passage together with a double-sided fan, and a fixed groove group formed by a plurality of cylindrical walls is provided on an inner peripheral portion of the partition plate; The part is provided with a rotating groove group constituted by a plurality of cylindrical walls, and each cylindrical wall of the fixed groove group and the rotating groove group is loosely fitted in the opening of the other groove group in a non-contact state. The clothes dryer, the double-sided fan and / or the partition plate Of oil from clothing
A clothes dryer characterized in that the material of the double-sided fan and / or the partition plate is made of a synthetic resin containing no rubber component so as to suppress deformation due to adhesion . 2. The clothes dryer according to claim 1, wherein the synthetic resin is a homopolymer polypropylene.