JPH067594A - Clothes drier - Google Patents

Abstract

PURPOSE:To provide a clothes drier such that the airtightness of a fan casing is maintained. CONSTITUTION:An outer rib 43 and an inner rib 44 of a circulation casing 20 for sucking or discharging air in a drum are welded on an outer rib 50 and an inner rib 51 of a cooling casing 24 for sucking or discharging outside air to form a fan casing for housing a double-side fan. As a result, the heat heating the inner limbs 44 and 51 heats the outer ribs 43 and 50 through a space formed by a combination of a groove 47 formed by the outer rib 43 and the inner rib 44 and a groove 54 formed by the outer rib 50 and the inner rib 51. Thus, temperatures of the outer ribs 43 and 50 does not rise so high, thereby preventing the joint from coming off by thermal expansion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer.

[0002]

2. Description of the Related Art Conventionally, this type of clothes dryer has been disclosed in Japanese Examined Patent Publication 6
It is shown in Japanese Patent Publication No. 1-41239. This one is equipped with a fan casing that houses a double-sided fan that dehumidifies and circulates the air inside the drum at the rear of the drum that dries clothes.
It is composed of a circulation casing that sucks and exhausts air inside the drum and a cooling casing that sucks and exhausts outside air.

[0003]

It is conceivable that the circulation casing and the cooling casing of the above-mentioned conventional example are bonded or welded by an adhesive.

However, since the air inside the circulation casing is hot during operation, the circulation casing is heated by the air, but the temperature of the cooling casing does not rise so much because it takes in outside air. Therefore, since the degree of thermal expansion of the circulation casing and the cooling casing changes, the joint may be distorted and the joint may come off.

Further, there is a limit in the visual confirmation as to whether or not it is bonded to a secret, and the reliability is lacking.

The present invention solves such a problem.

[0007]

Means for Solving the Problems According to the means for solving the above problems, a drum for accommodating clothes, a double-sided fan for dehumidifying the air in the drum and supplying the dehumidified air to the drum, and a drum for the inside of the drum Of a fan casing for accommodating the double-sided fan composed of a circulation casing for sucking and exhausting air and a cooling casing for sucking and exhausting outside air, and at the joint between the circulation casing and the cooling casing,
A groove is formed in the circulation casing and / or the cooling casing to form a space when joined, and a communication hole for communicating the space with the outside air is provided.

[0008]

That is, since the joints are formed on the outside and inside of the casing with a space in between, the hot air inside the circulation casing heats the vicinity of the joints, and even if the inner joints come off, Since the space where the outside air enters from the communication hole is passed through the joint, it is difficult to transfer heat.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, 1 is a metal frame having openings on the front and rear surfaces, 2 is a metal rear plate covering the rear opening of the frame 1, and 3 is the front opening of the frame 1. Covering doors 4 are placed in the front of frame 1,
An annular cylinder cover 5 fixed near the front opening of the frame 1 is a metal support plate arranged in the rear portion of the frame 1. The rear plate 2 has a central portion 2a which bulges backward. Further, the support plate 5 is erected on both sides of the frame 1 and fixed thereto, and a plurality of vent holes 6 are provided radially from the central portion.

Reference numeral 7 denotes a support shaft fixed by inserting the central portion of the support plate 5 from the front-rear direction. The rear end of the support plate 5 is fixed to the boss 8 of the central portion 2a of the rear plate 2 with bolts 9 and washers 10. There is.

Reference numeral 11 denotes a drum formed of a resin such as PP. A bearing 12 is fixed to the center of the rear surface of the drum 11, the front end of the support shaft 7 is rotatably inserted therein, and the bolt 13 prevents the bearing from coming off. There is. Further, on the rear surface of the drum 11, a dry air outlet 14 composed of a large number of through holes or radial slits is formed, and an annular recess 15 is provided so as to surround the outlet 14.

Reference numeral 16 is a seal member made of felt or the like fixed to the annular recess 15 with an adhesive or the like, and the front surface of the support plate 5 is in sliding contact therewith. 17 is a cylinder cover 4
Is a circulation air passage through which the dry air inlet 18 formed on the lower left side of the support plate 5 is inserted from the ventilation port 6 of the support plate 5, and an L-shaped duct 19 fixed to the cylinder cover 4 and a secret on the rear surface of the support plate 5. It is composed of a cylindrical circulation casing 20 which is covered with and fixed to. Reference numeral 23 denotes a honeycomb heater arranged in the circulating air passage 17 so as to face the dry air inlet 18.

The circulation casing 20 is a resin molded product such as PP. A downward circulation pipe 21 is integrally formed. The circulation pipe 21 is connected to the duct 19 at the inner bottom portion of the frame 1, and is connected to the duct 19. A drain hole 22 is provided at the bottom so as to project outside the machine.

Reference numeral 24 denotes a cooling casing of a resin molded product, which is fixedly attached to the rear surface side of the circulation casing 20 so as to be continuous with it and is formed to have substantially the same shape as the circulation casing 20.

Reference numeral 25 denotes a heat exchange type double-sided fan which is arranged so as to straddle the circulation casing 20 and the cooling casing 24, and is rotatably supported by the rear portion of the support shaft 7. 26
Is a pulley for rotation transmission connected to the double-sided fan 25. Incidentally, the circulation casing 20 and the cooling casing 2
4 and 4 form a fan casing of the double-sided fan 25.

Reference numeral 27 denotes a partition plate which is provided so as to surround the double-sided fan 25 and is integrally formed with the cooling casing 24. The double-sided fan 25 is housed in a circular opening in the center of the partition plate 27. Thus, the partition plate 27 and the double-sided fan 25 divide the inside of the fan casing into a dry air passage 28 and a cooling air passage 29.

Reference numeral 30 indicates an opening toward the dry air passage 28, a group of concentric rotation grooves integrally formed on the peripheral edge of the double-sided fan 25, and 31 indicates an opening toward the cooling air passage 29, and the partition plate 27 is provided. It is a concentric fixed groove group integrally formed on the inner peripheral edge.
The rotary groove group 30 is loosely fitted in the fixed groove group 31 in a non-contact state with each other. The rotary groove group 30 and the fixed groove group 31 have a labyrinth seal structure that partitions the dry air passage 28 and the cooling air passage 29.

Reference numeral 32 denotes a motor, which is disposed on the inner bottom of the frame 1 and includes a pulley 33, an idler pulley 34, and a V.
While rotating the drum 11 by the belt 35,
The rotation transmitting pulley 26 and the double-sided fan 25 are rotated by a fan pulley 36 and a round belt 37.

Reference numeral 38 denotes an intake port radially formed in the central portion 2a of the rear plate 2, 39 is an exhaust port for exhausting the outside air sucked from the intake port 38, and 40 is a portion where the round belt 37 is stretched. This is a cover that is bulged on the rear face plate 2 to cover it.

Reference numeral 41 denotes a dry air outlet 14 on the rear surface of the drum 11.
The filter cover 42 is attached from the inside so as to cover the filter, and the reference numeral 42 is a mesh filter detachably attached together with the filter cover 41.

During the drying operation, the motor 32 and the heater 2
3 is supplied to rotate the double-sided fan 25 and the drum 11. Thus, the dry air heated by the heater 23 is dried air inlet 18 → drum 11 → filter 42 → dry air outlet 1
4 → Vent 6 → Circulation casing 20 → Double-sided fan 25 →
The clothes in the drum 11 are dried by circulating the circulation pipe 21 → the duct 19 → the heater 23 in this order. On the other hand, the outside air is the intake port 38
-> Double-sided fan 25-> Cooling casing 24-> Exhaust port 39.

Heat is exchanged between the front and rear surfaces of the double-sided fan 25, and the dry air discharged from the drum 11 is dehumidified by the double-sided fan 25. The condensed water droplets at this time are discharged into the duct 19 and discharged outside the machine through the drain hole 22 as water droplets. The dry air dehumidified here is again supplied into the drum 11.

FIG. 3 is a plan view of the circulation casing 20 as viewed from the cooling casing 24 side. On the outer periphery of the circulation casing 20, an outer rib 43 and an inner rib 44 are provided inside the outer rib 43 in parallel with each other at a predetermined interval.
Further, connection ribs 45 and 46 that connect the outer rib 43 and the inner rib 44 are provided near the boundary between the upper portion and the lower portion of the circulation casing 20, respectively. Grooves 47 and 48 are formed by the outer rib 43, the inner rib 44, and the connecting ribs 45 and 46, and these are joints of the circulation casing 20. A communication port 49 communicates with the duct 19.

FIG. 4 is a plan view of the cooling casing 24 as viewed from the circulation casing 20 side. The cooling casing 24 includes an outer rib 5 facing the circulation casing 20 and each rib.
0, inner ribs 51 provided in parallel inside the outer ribs 50, and connection ribs 52 and 53 connecting the outer ribs 50 and the striking side ribs 51 are provided, and the outer ribs 50,
Grooves 54, 55 are formed by the inner ribs 51 and the connecting ribs 52, 53.
Are formed, and these are joints of the cooling casing 24. When the cooling casing 24 is attached to the circulation casing 20, a communication hole 56 communicating with the outside is provided near the high position of the groove 54, and a communication hole 57 is also provided near the connection rib 53 of the groove 55. There is.

As shown in FIG. 5, the fan casing of the double-sided fan 25 has ribs 43 and 4 of the circulation casing 20.
4, 45, 46 and ribs 50, 5 of the cooling casing 24
It is assembled by welding and bonding 1, 52 and 53, respectively.

Therefore, the groove 47 and the groove 54 are combined to form an upper space, and similarly, the groove 48 and the groove 55 form a lower space.

After assembling the fan casing, in order to check whether the welding is successful, a pipe 58 having the same diameter is inserted into each of the ventilation holes 56 and 57 and a pressure gauge 59 is provided as shown in FIG. The compressed air (about 1 to 4 atm) is inserted from the compressed air supply device 60 and the pressure gauge 5
Check for air leaks by checking if 9 drops.

If the ribs are welded securely, there will be no air leakage, so the pressure of the compressed air will not drop, and if some of the welded parts come off, the air will leak and be compressed. Air pressure drops. By confirming this decrease in pressure, it is possible to easily confirm incomplete welding.

The vent holes 56 and 57 may be provided at positions where the dehumidified water droplets in the fan casing do not leak outside even if the inner ribs 44 and 51 are unwelded during use. It is not limited to the above positions.

[0030]

According to the present invention, even if the circulation casing and the cooling casing have different degrees of thermal expansion, the joint portion is not completely detached, and the airtightness can be maintained.

[Brief description of drawings]

FIG. 1 is a sectional view of a clothes dryer of the present invention.

FIG. 2 is a view seen from the rear side with the rear plate of FIG. 1 removed.

FIG. 3 is a diagram showing a circulation casing of the present invention.

FIG. 4 is a diagram showing a cooling casing of the present invention.

FIG. 5 is an enlarged view of a main part of a joint portion between the circulation casing and the cooling casing of the present invention.

[Explanation of symbols]

 11 Drum 20 Circulation casing 24 Cooling casing 25 Double-sided fan 47, 48, 54, 55 Groove 56, 57 Vent hole

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyokazu Fujikawa 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Koichi Tanaka 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Incorporated (72) Inventor Kazama Kawamura, 2-18 Keihan Hon-dori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takafumi Hamano 2-18, Keihan-hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A drum for storing clothes, a double-sided fan for dehumidifying air in the drum to supply the drum to the drum, a circulation casing for sucking and exhausting air in the drum, and a cooling casing for sucking and exhausting outside air. And a groove for forming a space when joined to the circulation casing and / or the cooling casing, in a joint portion between the circulation casing and the cooling casing. And a communication hole for communicating the space with the outside air.