JP2760703B2 - 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.

[0002]

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

[0003]

The joint between the circulating casing and the cooling casing in the conventional example described above may be joined by bonding or welding with an adhesive.

[0004]

However, in such a case, the circulation case
There is a limit ring and the cooling casing with visual confirmation whether joined hermetically question Ru unreliable
The title comes out.

[0006] The present invention solves such a problem.

[0007]

Means of the present invention for solving the above problems include a drum for storing clothes, a double-sided fan for dehumidifying air in the drum and supplying it to the drum, is formed by joining a cooling casing that intake and exhaust circulation casing and outside air intake and exhaust of air
Is, Bei a fan casing housing the duplex fan
The circulating casing and the cooling device.
At the joint with the cooling casing , a groove formed on the joint end face of the circulation casing and / or the cooling casing is used.
A hole configured to provide a configured space, and further communicates the space and the outside air , wherein the air leaks from a joint portion of the air in the space.
Pressurized air from the compressed air supply to make sure
The communication hole is provided.

[0008]

Function: After assembling the fan casing, joining
To check if the department is getting well
And a communication hole in the joint space by the compressed air supply device
And pressurized air. If the joint is secure
Air does not leak, so the pressure of the compressed air does not decrease,
If it is removed, air leaks and the pressure of compressed air drops
You. If this pressure drop is confirmed, defective joints can be easily detected.
You can check.

[0009]

1 and 2, reference numeral 1 denotes a metal frame having openings on the front and rear surfaces, 2 denotes a metal rear plate for covering the rear opening of the frame 1, and 3 denotes a front opening of the frame 1. The door to cover 4 is located at the front in the frame 1,
An annular cylinder cover 5 fixed to the vicinity of the front opening of the frame 1 is a metal support plate disposed at the rear of the frame 1. The rear plate 2 has a central portion 2a bulging rearward. In addition, the support plate 5 is attached and fixed to both side portions of the frame 1 and has a plurality of ventilation holes 6 radiating from a central portion.

Reference numeral 7 denotes a support shaft fixedly inserted through the center of the support plate 5 from the front-rear direction. I have.

Reference numeral 11 denotes a drum formed of a resin such as PP. A drum 12 is fixed to the center of the rear surface, and the front end of the support shaft 7 is rotatably inserted therein. I have. On the rear surface of the drum 11, a drying air outlet 14 composed of a 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 denotes a sealing member made of felt or the like fixed to the annular recess 15 with an adhesive or the like, and slidingly contacts the front surface of the support plate 5. 17 is the cylinder cover 4
Is a circulating air passage through which a drying air inlet 18 formed on the lower left side of the support plate 5 is inserted through the ventilation port 6 of the support plate 5. An L-shaped duct 19 fixed to the cylinder cover 4 and a rear surface And a cylindrical circulating casing 20 which is fastened and fixed. Reference numeral 23 denotes a honeycomb heater arranged in the circulation air passage 17 so as to face the drying air inlet 18.

The circulating casing 20 is a resin molded article made of PP or the like, and integrally forms a downward circulating pipe 21. The circulating pipe 21 is connected to and communicates with a duct 19 at the inner bottom of the frame 1. A drain hole 22 protruding outside the machine is provided vertically at the bottom.

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

Numeral 25 denotes a heat exchange type double-sided fan arranged over the circulation casing 20 and the cooling casing 24, and is rotatably supported at the rear of the support shaft 7. 26
Is a rotation transmitting pulley connected to the double-sided fan 25. The circulation casing 20 and the cooling casing 2
4 together form a fan casing of the double-sided fan 25.

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

Reference numeral 30 denotes an opening toward the drying air passage 28, concentric rotating grooves formed integrally with the periphery of the double-sided fan 25, 31 denotes an opening toward the cooling air passage 29, and It is a group of concentric fixed grooves integrally formed on the inner peripheral edge.
The rotating groove group 30 is loosely fitted to the fixed groove group 31 in a non-contact state with each other. The rotating groove group 30 and the fixed groove group 31 have a labyrinth seal structure that separates the drying 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 has a pulley 33, an idler pulley 34,
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 panel 2, reference numeral 39 denotes an exhaust port for exhausting outside air taken in from the intake port 38, and reference numeral 40 denotes a portion where the round belt 37 is stretched. It is a cover bulging out from the rear plate 2 to cover it.

Reference numeral 41 denotes a drying air outlet 14 on the rear surface of the drum 11.
The filter cover 42 attached from the inside so as to cover the filter cover 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 to rotate the double-sided fan 25 and the drum 11. Thus, the drying air heated by the heater 23 is supplied to the drying air inlet 18 → drum 11 → filter 42 → dry air outlet 1
4 → Vent 6 → Circulation casing 20 → Double-sided fan 25 →
The clothes are circulated in the order of the circulation pipe 21 → the duct 19 → the heater 23 to dry the clothes in the drum 11. On the other hand, the outside air
It flows in the order of the double-sided fan 25, the cooling casing 24, and the exhaust port 39.

Then, heat is exchanged between the front and rear surfaces of the double-sided fan 25, and the drying air coming out of 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 out of the machine through the drain holes 22 as water droplets. The dry air dehumidified here is supplied into the drum 11 again.

FIG. 3 is a plan view of the circulation casing 20 as viewed from the cooling casing 24 side. Outer ribs 43 and inner ribs 44 are provided on the outer periphery of the circulation casing 20 at predetermined intervals in parallel with the outer ribs 43.
In addition, connection ribs 45 and 46 for connecting the outer rib 43 and the inner rib 44 are provided near the upper and lower boundaries of the circulation casing 20, respectively. The outer ribs 43, the inner ribs 44, and the connection ribs 45 and 46 form grooves 47 and 48, which serve as joints of the circulation casing 20. Reference numeral 49 denotes a communication port that 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 has outer ribs 5 opposed to the circulation casing 20 and the respective ribs.
0, an inner rib 51 provided in parallel inside the outer rib 50, and connecting ribs 52 and 53 for connecting the outer rib 50 and the hitting rib 51 are provided.
Grooves 54 and 55 are formed by inner ribs 51 and connection ribs 52 and 53.
Are formed, and these become the 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. I have.

As shown in FIG. 5, the fan casing of the double-sided fan 25 includes the ribs 43, 4
4, 45, 46 and each rib 50, 5 of the cooling casing 24.
1, 52 and 53 are welded and joined, respectively, to assemble them.

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, a pipe 58 having the same diameter was inserted into each of the ventilation holes 56 and 57 and a pressure gauge 59 was provided as shown in FIG. Compressed air (about 1 to 4 atm) is inserted from the compressed air supply device 60 to
Check for air leaks by checking if 9 drops.

If the ribs are securely welded, there is no air leakage, so the pressure of the compressed air does not decrease. If a part of the welded portion comes off and enters, the air leaks and the compressed air is released. The air pressure drops. If this pressure drop is confirmed, welding incompleteness can be easily confirmed.

The vent holes 56 and 57 need only be provided at positions where the dehumidified water droplets in the fan casing do not leak out even if the welding of the inner ribs 44 and 51 is released during use. The position is not limited to the position described above.

[0030]

According to the structure of the present invention, the circulation casing is provided.
It is easy to check the connection between the cooling casing and the cooling casing.
It is possible to reliably provide an airtight fan casing,
Increases reliability.

[Brief description of the drawings]

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

FIG. 2 is a view of the rear face plate of FIG.

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

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

FIG. 5 is an enlarged view of a main part of a joint 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

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiwa Fujikawa 2--18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Koichi Tanaka 2--18 Keihanhondori, Moriguchi-shi, Osaka Yo Electric Co., Ltd. (72) Kazura Kawamura 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Takafumi Hamano 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Inside Electric Co., Ltd. (56) References: JP-A-63-98193 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) D06F 58/02

Claims (1)

(57) [Claims] 1. A drum for storing clothes, a double-sided fan for dehumidifying air in the drum and supplying it to the drum, a circulation casing for sucking and discharging air in the drum, and a cooling casing for sucking and discharging outside air. constructed by joining, and a fan casing housing the duplex fan clothing
In the dryer , at the joint between the circulation casing and the cooling casing,
It is of the circulation casing and or the cooling casing
A space formed by a groove formed in the joint end face, and a hole for communicating the space with the outside air;
Compressed air to check for leaks from the air junction
A clothes dryer having a communication hole into which compressed air is supplied from a supply device .