JPH05131094A - Dryer for clothing - Google Patents

Abstract

PURPOSE:To provide a clothing dryer in which a double-sided fan is rotated smoothly even if the double-sided fan is bent on a cooling air passage side during drying and clothing is dried with high drying efficiency at all time without reducing drying efficiency. CONSTITUTION:A partition plate 75 which is provided at the periphery of a double-sided fan 71 to carry out division into a drying air passage 77 and a cooling air passage 78 in cooperation with the double-sided fan 71 and also possesses at the center an opening for arranging the fan 71, the 1st annular groove group 80 which runs along the peripheral edge of the opening of the partition plate 75 and is formed integrally and concentrically with a surface on the cooling air passage 78 side, and the 2nd annular groove group 79 which is formed concentrically along the outer peripheral edge of the fan 71 and fitted idly to the 1st annular groove group 80 under the condition of non-contact, are equipped, and the outer periphery sides of walls 79a constituting the 2nd annular groove group 79 are made to be inclined surfaces 5 so that the walls 79a may taper off.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a clothes dryer.

[0002]

2. Description of the Related Art Conventionally, a heat exchanging type double-sided fan is provided, dry air is circulated to a drying chamber, external air is introduced as cooling air, and the dry air and the cooling air are heat-exchanged by the fan. A so-called dehumidifying type clothes dryer, which removes water and then reheats drying air with a heater to supply it to a drying chamber, is disclosed in Japanese Patent Publication No. Sho 60-56518. The applicant of the present invention has proposed a structure for preventing the dry air from leaking to the cooling chamber side by the applicant.
-189108. This is the second
A description will be given with reference to FIGS.

Reference numeral 51 is a machine frame of the clothes dryer 52, 53 is a front plate fixed to the front surface of the machine frame 51, and a clothes inlet 54 is provided in the center. Reference numeral 55 is a rear surface plate fixed to the rear surface of the machine frame 51, and has an external air introduction hole 5 in the center.
6 are provided, and an outlet 57 is provided at the bottom.
Reference numeral 58 is a door that opens and closes the input port 54, 59 is an annular sheet metal drum support plate that is mounted in the machine frame 51 so as to surround the input port 54, and 60 is a rear portion of the machine frame 51 and the rear portion. A support plate that is laterally installed so as to be spaced apart from the face plate 55, and 61 is a fan casing that is fixed to the support plate 60, whereby the inside of the machine frame 51 is
It is divided into a drying chamber 62 and a fan chamber 63. 64 is a horizontal axis type drum disposed in the drying chamber 62,
The front opening is opposed to the input port 54 and is supported by the drum support plate 59 via a felt or the like.
The rear surface side is rotatably supported by a shaft 65. 66 is a dry air outlet provided at the center of the rear surface of the drum 64,
Reference numeral 7 denotes a lint filter which covers the outlet 66, 68 denotes a dry air inlet provided at a lower portion of the drum support plate 59, and 69.
Is a communication port provided on the support plate 60 and connecting the drying chamber 62 and the fan chamber 63, and 70 is the dry air outlet 66.
It is a sealing member for reliably sending the wind from the communication port 69.

Reference numeral 71 denotes a disk-shaped double-sided synthetic resin fan fixed to the shaft 65 in the fan chamber 63. The circulation fan 72 located on the drying chamber 62 side and the rear plate 55 side. The cooling fans 73, ..., Which are located are respectively formed radially and integrally on the front and back sides, and a pulley 74 is integrally formed at the central portion on the cooling fan side. Reference numeral 75 denotes a synthetic resin partition plate provided in the fan casing 61 so as to surround the double-sided fan 71. By housing the double-sided fan 71 in a circular opening 76 at the center of the partition plate 75, The partition plate 75 and the double-sided fan 7
Together with 1, the inside of the fan chamber 63 is divided into a dry air passage 77 and a cooling air passage 78.

On the periphery of the double-sided fan 71, a group of concentric rotary grooves 79 opening toward the drying air passage 77.
Are integrally formed, on the other hand, on the inner peripheral edge of the partition plate 75,
Concentric fixed groove group 8 opening toward the cooling air passage 78
0 is integrally formed, and the rotary groove group 79 is loosely fitted in the fixed groove group 80 in a non-contact state with each other. That is, the rotary groove group 79 and the fixed groove group 80 form a labyrinth connection. Reference numeral 81 is a water drain hole for condensing the condensed water in the labyrinth bond and dropping the condensed water, that is, the dehumidified water toward the drying air passage side.

Although not shown, a screw boss is provided upright on the rear surface side of the fixed groove group 80, and is screwed to the wall surface of the drying air passage facing the fixed groove group 80. The probability of

Reference numeral 82 denotes a drying duct that connects the lower portion of the drying air passage 77 and the drying air inlet 68 ..., In which a heating heater 83 is arranged. 84 is this duct 8
2, a discharge port for discharging dehumidified water condensed in the duct to the outside of the machine, and 85 a drive motor,
It is connected to the pulley 74 via a small pulley 86 and a belt 87, and is connected to the drum 64 by a pulley (not shown).
It is connected via a belt.

During the drying, the driving force of the driving motor 85 causes the drum 64 to rotate at a low speed and the double-sided fan 71 to rotate at a high speed in one direction, and at the same time, the heater 83 is energized. The dry air is heated.

As a result, the wind generated by the rotation of the circulation fans 72, ...
It circulates through the drum 64 and exchanges heat with the material to be dried in the drum 64. Further, by the rotation of the cooling fans 73, the outside air is introduced into the cooling air passage 78 from the introduction holes 56 and is led out from the outlet 57, at which time the double-sided fan 71 is cooled. Then, after the heat exchange, the dry air comes into contact with the double-sided fan 71 to be cooled, the moisture in the dry air is condensed, flows down in the dry air passage 77, and is discharged from the discharge port 84.
Discharged from. During this time, the dry air passage 77 and the cooling air passage 78 are sealed by the labyrinth connection.

[0010]

In the conventional example, the double-sided fan 71 is formed of a synthetic resin material. During the drying, the temperature on the dry air duct side becomes higher than the temperature on the cooling air duct side (about 70 ° C. on the dry air duct side, about 20 ° C. on the cooling air duct side), so the double-sided fan warps toward the cooling air duct side. As a result, the wall forming the group of rotation grooves may be inclined.

If the walls of the rotary groove group are inclined, the air passage resistance in the air seal may be changed, or the walls may come into contact with each other to hinder the rotation of the double-sided fan, thus lowering the drying efficiency.

The present invention relates to improvement of a dryer, and solves such a problem.

[0013]

According to the present invention, a heat exchange type double-sided fan molded of a synthetic resin material circulates a drying air in a drying chamber and introduces an external air as a cooling air to dry the air. A clothes dryer that removes moisture by exchanging heat between wind and cooling air by the fan, and is arranged around the fan so as to divide the drying air passage and the cooling air passage in cooperation with the double-sided fan. A partition plate which is provided and has an opening for arranging the fan in the center, and a first annular groove group which is integrally formed concentrically with the surface on the cooling air passage side along the opening peripheral edge of the partition plate. A second annular groove group that is integrally formed concentrically along the outer peripheral edge of the fan and that is loosely fitted in the first annular groove group in a non-contact state to form a second annular groove group. The outer peripheral side of the wall has a slanted surface so that the wall is tapered. It is an.

[0014]

With the above structure, the temperature on the drying air passage side becomes higher than the temperature on the cooling air passage side during drying, so that the double-sided fan warps toward the cooling air passage side and the walls forming the second annular groove group are inclined. However, the outer peripheral side of the wall forming the second annular groove group is the first
It may not come into contact with the wall forming the annular groove group, and the gap between the wall forming the second annular groove group and the wall forming the first annular groove group may be narrowed to significantly change the air passage resistance. Absent.

Further, the mass of the second annular groove group is reduced by the amount of thinning due to the inclined surface, and the heat capacity of this portion is reduced, so that the condensed water generated in the labyrinth connection is reduced.

[0016]

Embodiments of the present invention will be described with reference to the drawings.
However, since the configuration other than the partition plate and the double-sided fan is the same as the conventional example, the same reference numerals are used and the description thereof is omitted.

FIG. 1 shows a portion corresponding to A in FIG.

Here, in the opening peripheral edge which is the inner peripheral edge of the partition plate 75, along the opening peripheral edge, on the surface on the cooling air passage 78 side, a concentric first opening which opens toward the cooling air passage 78 is formed. A fixed groove group 80, which is one annular groove group, is integrally formed. On the other hand, on the outer peripheral edge of the double-sided fan 71, a concentric second annular ring that opens along the outer peripheral edge toward the drying air passage 77. The rotary groove group 79, which is a groove group, is integrally formed, and the rotary groove group 7 is formed.
9 are loosely fitted in the fixed groove group 80 in a non-contact state with each other, and the rotary groove group 79 and the fixed groove group 80 form a labyrinth connection. .. forming the rotation groove group 79 are formed on the respective outer peripheral sides of the walls 79a .. And
Thus, the outer peripheral sides of the walls 79a ...
.. are tapered so that the distance between each outer peripheral side of the walls 79a of the rotary groove group 79 and each inner peripheral side of the walls 80a forming the fixed groove group 80 is dry. Assuming that the air passage side is A and the cooling air passage side is B, as shown in FIG.
> B, and the double-sided fan 71 is heated by the heat during cooling to cool the air passage 7
Even if it is warped to the 8 side, as shown in FIG. 9B, only A≈B is obtained at most, and the tips of the walls 79a ... Do not contact the fixed groove group 80. In addition, the wall 79a that constitutes the rotation groove group 79
.. and the walls 80a forming the fixed groove group 80 are not so narrow that the air passage resistance is significantly changed.

Therefore, during the drying, the double-sided fan 71 warps toward the cooling air passage 78, and the walls 79a forming the rotary groove group 79.
The air passage resistance hardly changes even when the wall tilts, and the wall 79a
... and the wall 80a ... do not contact each other, so the double-sided fan 71
Rotates smoothly without hindering rotation, drying efficiency is not lowered, and clothes are always dried with high drying efficiency.

Further, a wall 79a forming the rotary groove group 79.
Since the inclined surface 5 is formed on the outer peripheral side of each of the ...
By making it thinner, it becomes smaller and double-sided fan 7
1 can be made lighter, and the mass of the walls 79a forming the rotary groove group 79 is reduced, so that the heat capacity of this portion is reduced, whereby the cooling air or the dry air entering the labyrinth connection reduces the labyrinth connection. Less condensed water is generated.

[0021]

Since the clothes dryer of the present invention is configured as described above, even if the double-sided fan warps toward the cooling air passage side during drying, the outer peripheral side of the wall forming the second annular groove group is the first side. It may not come into contact with the wall forming the annular groove group, and the gap between the wall forming the second annular groove group and the wall forming the first annular groove group may be narrowed to significantly change the air passage resistance. Thus, the double-sided fan always rotates smoothly without being obstructed in rotation during drying, and the drying efficiency does not decrease, so that clothes can be always dried with high drying efficiency.

Further, the mass of the second annular groove group is reduced by the thinner surface due to the inclined surface, so that the weight of the double-sided fan can be reduced, and at the same time, the heat capacity of this part is reduced to reduce the condensed water generated in the labyrinth coupling. Can be reduced.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part corresponding to FIG. 2A showing an embodiment of the clothes dryer of the present invention, (a) an enlarged cross-sectional view of an essential part of a double-sided fan without warping, and (b) the same warp. FIG. 3 is an enlarged cross-sectional view of a main part in a closed state.

FIG. 2 is an internal mechanism diagram showing a cross section of a main part of a clothes dryer in a conventional example.

FIG. 3 is a rear view of the cooling air passage.

FIG. 4 is a cross-sectional view of a main part of the fan chamber.

[Explanation of symbols]

 5 Inclined surface 71 Double-sided fan 77 Dry air passage 78 Cooling air passage 79 Rotating groove group (second annular groove group) 79a Rotating groove group wall 80 Fixed groove group (first annular groove group) 80a Fixed groove group wall

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tamotsu Kawamura 2-18 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kiyokazu Fujikawa 2-18 Keihan-hondori, Moriguchi-shi, Osaka Sanyo Electric Incorporated (72) Inventor Koichi Tanaka 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yoshiaki Aoki 2-18-2 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A heat exchange type double-sided fan molded of a synthetic resin material circulates dry air into a drying chamber and introduces external air as cooling air, so that the dry air and the cooling air are the same. Heat exchange by means of heat to remove water, and is arranged around the fan so as to separate the dry air passage and the cooling air passage in cooperation with the double-sided fan, and the fan is arranged in the center. A partition plate having an opening for opening, a first annular groove group concentrically integrally formed on the surface on the cooling air passage side along the opening peripheral edge of the partition plate, and a concentric center along the outer peripheral edge of the fan. A second annular groove group that is integrally molded into a first annular groove group and that is loosely fitted in the first annular groove group in a non-contact state, and the outer peripheral side of the wall forming the second annular groove group is tapered. A clothes dryer characterized by having an inclined surface such that