JPH0956996A - Clothes dryer - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a highly safe clothes dryer that automatically and surely extinguishes a fire in a rotating drum. SOLUTION: In a clothes dryer which rotates a rotary drum 4 and a fan 8 by a motor 1 and supplies heated air by a heater 9 into the rotary drum 4 by the operation of a fan 8 to dry laundry. The rotary drum 4 is provided with fire extinguishing means 30 and 34 for extinguishing a fire in response to the heat of the fire when the fire occurs in the rotary drum 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing structure in a rotating drum of a clothes dryer.

[0002]

2. Description of the Related Art In a drum-type clothes dryer, the inside of a rotary drum becomes considerably hot during drying.

[0003]

If, for example, some laundry has oil soaked into it and such laundry is accidentally thrown into the machine, it will not be possible to wait for a while after the drying. There was a risk of ignition and a fire in the rotating drum.

[0004] For example, as a structure for responding to this fire occurrence, it is conceivable that a fire is detected by temperature detection and water is discharged into the rotary drum, but the structure becomes complicated and the cost becomes high, and the detection is performed. When the mechanism is out of order, there is a problem that the fire is not extinguished.

It is an object of the present invention to provide a highly safe clothes dryer which automatically and surely extinguishes a fire in the rotary drum.

[0006]

According to the first aspect of the present invention, the rotating drum and the fan are rotated by the motor, and the heating air is supplied into the rotating drum by the heater by the operation of the fan to wash the laundry. In a clothes dryer for drying articles, a fire extinguishing means for extinguishing a fire in response to heat of the fire is provided in the rotary drum.

According to a second aspect of the invention, in the first aspect of the invention, the fire extinguishing means comprises a fire extinguishing agent and an isolation container for the extinguishant, and the isolation container is damaged and opened by heat of fire. It has a configuration.

According to a third aspect of the invention, in the second aspect of the invention, the isolation container is an inner peripheral wall located along the inner side of the peripheral wall of the rotary drum, and the extinguishing agent is provided at an outer position thereof. It has been configured as follows.

[0009]

FIG. 1 is a sectional view of a clothes dryer according to the present invention. First, the basic structure and operation of the clothes dryer will be described with reference to FIG.

When the motor 1 rotates, the rotary drum 4 rotates via the pulley 2 and the V belt 3. The idler pulley 5 is for applying tension to the V belt 3. At the same time, the heat exchanging double-sided fan 8 rotates via the fan pulley 6 and the round belt 7.

When the fan 8 rotates, the hot air heated by the heater 9 made of semiconductor enters the drum 4 through the ventilation hole 11 of the cylinder cover 10 and exchanges heat with the clothes in the rotating drum 4 to become hot and humid air. , The filter cover 12, the lint filter 13, and the partition plate 15 are returned to the position of the fan 8 again, and this circulation operation is repeated.

On the other hand, the cooling air is sucked into the machine through the air hole of the rear cover 16 by the rotation of the fan 8, cools one side of the fan 8, and after cooling, the rear cover 1
It is exhausted to the outside of the machine through the exhaust hole 21 of No. 6. At this time, the high-temperature and high-humidity air on the circulation side of the fan 8 is cooled, so that the water contained in the clothes is condensed again from the steam to form water drops. The water droplets are drained out of the machine through the drainage port 17 of the duct 14.

Reference numeral 18 is a first heat-sensitive element provided so as to measure the temperature of air discharged from the drum 4, and 20 is a second heat-sensitive element.
Is a heat-sensitive element and is provided to measure the air temperature after heat exchange.

The characteristic configuration of the present invention will be described below with reference to FIG. Reference numeral 30 denotes an inner peripheral wall made of expanded polypropylene resin, and a fire extinguishing agent 34 made of powder of sodium hydrogen carbonate is filled and housed between the inner peripheral wall 30 and the peripheral wall 33 of the rotary drum 4. The inner peripheral wall 30 and the fire extinguishing agent 34 in the above form fire extinguishing means. The inner peripheral wall 30 as described above
By using a foamed polypropylene resin as the material, the inner peripheral wall 30 and the fire extinguishing agent 34 can provide a soundproof effect and a cushioning effect during a dry operation. As shown in FIG. 3, the inner peripheral wall 30 is attached to the connecting portion of the peripheral wall 33 of the rotary drum 4, the front plate 38 and the rear plate 39 with both edges 31 fixed by caulking. The peripheral wall 33, the front plate 38 and the rear plate 39
Is made of metal such as steel or stainless steel.

With the above structure, when a fire occurs in the rotary drum 4 and the inner peripheral wall 30 is melted and opened by the heat, the extinguishing agent 34 spreads throughout the rotary drum 4. This extinguishes the fire.

Another embodiment will be described below. In the structure shown in FIG. 4, the extinguishing agent 34 is provided by utilizing the baffle 35 portion in the rotary drum 4. Although the baffle 35 is provided only at one place in FIG. 4, the extinguishing effect is further enhanced by providing a plurality of such baffles 35.

In the structure shown in FIG. 5, the rotary drum 4
A heat-melting resin pack 36 containing a fire extinguishing agent 34 is attached to the peripheral wall 33 of FIG. The hot-melt resin pack 36 also has both end portions 36a by caulking to the connecting portion of the peripheral wall 33 of the rotary drum 4, the front plate 38 and the rear plate 39.
Is fixed and attached. If such a pack 36 is used, the fire extinguishing agent 34 when assembling the rotary drum 4 is used.
Is easily incorporated.

As another embodiment, it is also possible to use a film-shaped inner peripheral wall 30.

Further, as the extinguishing means, for example, if the inner peripheral wall 30 is made of a substance having the extinguishing function of generating carbon dioxide gas or the like by burning, it is possible to omit the use of a separate extinguishing agent.

[0020]

According to the present invention, when a fire occurs in the rotating drum, the fire is automatically and surely extinguished, so that there is no damage due to the fire and the clothes dryer is highly safe. Is obtained.

[Brief description of drawings]

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

FIG. 2 is a sectional view of a rotary drum according to an embodiment of the present invention.

FIG. 3 is a sectional view of an embodiment of a rotary drum of the present invention in a direction orthogonal to FIG.

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

FIG. 5 is a sectional view of still another embodiment of the rotary drum of the present invention.

6 is a perspective view of a pack containing a fire extinguisher used in the embodiment shown in FIG.

[Explanation of symbols]

 1 Motor 4 Rotating Drum 8 Fan 9 Heater 30 Inner Wall (Fire Extinguishing Means) 34 Fire Extinguisher (Fire Extinguishing Means)

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyokazu Fujikawa 2-5-5 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Koichi Kuroda 2-5 Keihan-hondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Tamotsu Kawamura 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A clothes dryer in which a rotating drum and a fan are rotationally operated by a motor, and heated air by a heater is supplied into the rotating drum by the operation of the fan to dry laundry. A clothes dryer provided with a fire extinguishing means for extinguishing a fire in the rotating drum in response to the heat of the fire. 2. The clothes dryer according to claim 1, wherein the fire extinguishing means comprises a fire extinguishing agent and an isolation container for the extinguishant, and the isolation container is damaged and opened by heat of a fire. 3. The clothes dryer according to claim 2, wherein the isolation container is an inner peripheral wall located along the inner side of the peripheral wall of the rotary drum, and the extinguishing agent is provided at an outer position thereof.