JPH0998908A - Hot air drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to miniaturize a hot air drying device inserting a motor into the inner hollow part of an impeller and at the same time, connecting a hot air duct of almost half the width of a circular casing, in a tangential direction from one side of the hot air duct, to the circular casing storing the impeller, in the hot air drying device for drying a wet hand. SOLUTION: This hot air drying device heats an atmospheric air sucked by rotation of an impeller 32 by a motor 34, using a heating element 92 stored in a hot air duct 24 and blows a hot air out of a discharge aperture 14 to dry a wet hand. In this case, the impeller 32 is almost of the cylindrical shape, and is supported, in cantilever fashion, by the rotary shaft of the motor 34 inserted into the inner hollow part of the impeller 32. In addition, the hot air duct 24 is formed to the size almost half a circular casing 26 and further, is connected to the circular casing 26 close to an upper case 6 in a tangential direction from one of the sides of the casing 26. Thus a passage space 27 is formed between a vertical wall 2 and the hot air duct 24 so that the space 27 communicates with a suction aperture 8 via a through hole 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air drying device for supplying warm air to a user's hand to dry a wet hand.

[0002]

2. Description of the Related Art Conventionally, various types of warm air dryers for drying wet hands have been known. For example, as disclosed in Japanese Utility Model Laid-Open No. 4-69095, a main body case is provided with a partition wall. It is known that a divided fan is provided with a rotary fan, a heating element, and a blowout duct on one side, and a blowout warm air circulation path is formed by a partition wall.

[0003]

However, in such a conventional device, there is a problem that the device must be provided with a partition wall in the main body case, which makes the device large. An object of the present invention is to provide a small-sized warm air drying device.

[0004]

In order to achieve the above object, the present invention takes the following means to solve the problem. That is, in a case having a suction port that opens downward, a warm air duct containing a heating element is arranged substantially vertically and the discharge direction is downward, and furthermore, inside the hollow of the impeller. A warm air drying device is characterized in that a motor is inserted and the warm air duct having a width of about half of the circular casing is tangentially connected to a circular casing accommodating the impeller from one side of the circular casing. That is it.

Further, the circuit board of the motor may be arranged along the hot air duct, and the circuit components on the board may be arranged inside the hot air duct, or the circuit board near the suction port may be arranged. A storage room for the fragrance may be formed on the side surface of the case, and the storage room may communicate with the inside of the case.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, reference numeral 1 denotes a lower case, and the lower case 1 includes a vertical wall 2 attached to a wall surface, a pillar or the like, and a horizontal wall 4 provided below the vertical wall 2. An upper case 6 is attached to the lower case 1 to accommodate a horizontal wall 4 therein and to cover almost the entire vertical wall 2 to form a predetermined space inside.

On the lower surface of the upper case 6, an intake port 8 composed of a plurality of slits is formed downward on the vertical wall 2 side. A through hole 9 is formed in the horizontal wall 4 corresponding to the suction port 8, and the outside and the inside of the upper case 6 are communicated with each other through the suction port 8 and the through hole 9.

A nozzle case 10 having a discharge port 14 opened downward is attached to the lower side of the front end of the horizontal wall 4, and the nozzle case 10 is arranged side by side with the suction port 8 in the upper case. The upper case 6 is projected through the opening 12 formed in the upper case 6. In this embodiment,
A case 15 is formed by the lower case 1, the upper case 6, and the nozzle case 10.

A light emitter 16 and a light receiver 18 are attached to the horizontal wall 4, and the light emitter 16 emits light downward through an opening 20 formed in the upper case 6, and the light receiver 18 is The reflected light is received downward through the opening 22 formed in the nozzle case 10 to output a signal.

On the other hand, in the case 15, a warm air duct 24 connected to the discharge port 14 is arranged substantially vertically, and
A circular casing 26 is integrally formed with the warm air duct 24. The warm air duct 24 and the circular casing 26 are formed by a flat plate 28 orthogonal to the vertical wall 2 and a side plate 30 attached to the flat plate 28 and having a substantially U-shaped cross section. The impeller 32 is housed in the circular casing 26 such that its center of rotation is parallel to the vertical wall 2 and horizontal, and the outer shape of the circular casing 26 is formed to be substantially circular.

In this embodiment, the impeller 32 is formed into a substantially cylindrical shape, is arranged coaxially with the impeller 32, and is attached to the rotary shaft of a motor 34 inserted in the hollow inside of the impeller 32. It is attached in a cantilevered state. Suction ports 36 and 38 are formed in the flat plate 28 and the side plate 30 coaxially with the impeller 32. Both ends of the motor 34 are projected to the outside through the suction ports 36 and 38, and the flat plate A motor 34 is fixed to 28.

The warm air duct 24 is formed to have a width which is about half the width of the circular casing 26.
Are tangentially connected from one side of the circular casing 26 near the upper case 6. Thereby, a passage space 27 is formed between the vertical wall 2 and the warm air duct 24, and the passage space 27 communicates with the suction port 8 via the through hole 9.

On the other hand, the flat plate 28 has a front and rear leg portion 4
0, 42 are formed, and the front leg portion 40 on the suction port 8 side is formed.
As shown in FIG. 4, it is bent in parallel with the vertical wall 2 and is attached with a mounting plate 44 parallel to the vertical wall 2. Rubber bushes 46, 48 are provided at both ends of the mounting plate 44.
The rubber bushes 46, 48 are attached to the vertical wall 2 by screws 50, 52 and washers 54, 56.

As shown in FIG. 1, the rear leg portion 42 is bent in parallel with the vertical wall 2 and has a rubber bush 58 attached thereto. Then, the rubber bush 58 is fixed to the washer 6 fixed by the screw 60 screwed to the vertical wall 2.
A coil spring 64 is interposed between the rubber bush 58 and the rubber bush 58 to press the rubber bush 58 against the vertical wall 2.

As shown in FIGS. 3 and 5, a rectangular opening 66 is formed on the side surface of the upper case 6, and an aromatic case 68 is attached to the opening 66. The fragrance case 68 is swingably supported around an axis orthogonal to the vertical wall 2 by projections 70 and 72 inserted into the upper case 6 and the vertical wall 2, respectively.

A storage chamber 74 is formed in the fragrance case 68, and the storage chamber 74 has an input port 76 formed on the side of the impeller 32 and a storage chamber 74 formed by a through hole 78 formed in the side surface. It communicates with the inside of the upper case 6. Then, when the fragrance case 68 is swung from the state where the opening 66 is closed by the fragrance case 68 and the fragrance case 68 is housed in the upper case 6, the fragrance case 68 projects from the upper case 6, The charging port 76 is opened to the outside of the upper case 6 so that the storage chamber 74 can be filled with the fragrance.

A circuit board 80 is erected on the vertical wall 2 along the hot air duct 24, and the circuit board 80 is sandwiched and supported by the upper case 6. As shown in FIG. 6, a control circuit 82 is formed on the circuit board 80, and the light emitting device 16 and the light receiving device 18 are connected to the control circuit 82.

On the circuit board 80, a control circuit 82 is also provided.
The rectifier 84 and the choke coil 86 are connected to the motor 34, and the rectifier 84 and the choke coil 86 are connected to the motor 34 via a terminal block 88 attached to the side surface of the flat plate 28. A capacitor 90 connected in parallel with the motor 34 is further arranged on the circuit board 80. In the circuit board 80, circuit components such as the rectifier 84, the choke coil 86, and the capacitor 90 are arranged in the warm air duct 24. Inside, that is, in the present embodiment, the warm air duct 24
The circuit board 80 is erected so as to be inserted into the passage space 27 between the vertical wall 2 and the vertical wall 2. In this embodiment, the capacitance of the capacitor 90 is relatively large, and is about 400 to 500 μF, so that its outer shape is also large.

The control circuit 82 is further connected to a heating element 92 provided in the hot air duct 24 via a thermal fuse 94, a thermoswitch 96 and a terminal block 88, and a power source and a terminal block not shown. 88 and a cord 98. A detachment detection switch 100 provided on the vertical wall 2 is interposed in the cord 98, and the detachment detection switch 100 penetrates the vertical wall 2 and has a tentacle 102 on the back side.
When the vertical wall 2 is attached to a wall surface (not shown), it is pushed by the wall surface and drawn in, and when the vertical wall 2 is removed from the wall surface for some reason, the circuit is cut off. It is configured.

Next, the operation of the above-mentioned warm air drying device of this embodiment will be described. The vertical wall 2 is attached to a wall surface (not shown) with the suction port 8 and the discharge port 14 facing downward. As a result, the dropout detection switch 100 is closed, and when a power switch (not shown) is turned on, the light emitter 16 emits light downward.

When the user's hand is inserted under the discharge port 14, the light reflected by the hand is detected by the photodetector 18 and controlled by the control circuit 82 to heat the heating element 92 and the motor. 34 is rotationally driven. Motor 34
When the driving of the motor is started, the spark of the brush (not shown) of the motor 34 is suppressed by the condenser 90,
The life of the brush is improved.

The impeller 32 is rotated by the motor 34, and external air is introduced through the suction port 8, the through hole 9, the passage space 27 between the warm air duct 24 and the vertical wall 2, and the suction ports 36, 38. Inhaled. Then, passing through the warm air duct 24,
In the meantime, it is heated by the heating element 92, hot air is blown downward from the discharge port 14, and the wet hand of the user (not shown) is dried. Further, the fragrance stored in the storage chamber 74 is volatilized, flows out into the upper case 6 from the charging port 76 and the through hole 78, is mixed with the air sucked from the outside, and is discharged from the discharge port 14.

On the other hand, the flat plate 28 also vibrates due to the vibration caused by the rotation of the motor 34.
The rubber bushes 46, 48 dampen the vibration of the rear leg portion 42 by the rubber bush 58 and the coil spring 64.
Therefore, the transmission of the vibration to the vertical wall 2 is attenuated, and the generation of noise due to the vibration can be suppressed. The user's hand is discharge port 1
When it is moved away from 4, the reflected light is no longer detected by the light receiver 18, and heating of the heating element 92 and driving of the motor 34 are stopped.

As described above, the hot air drying device of this embodiment has the passage space 27, the circular casing 26 and the hot air duct 2.
Since the substantially U-shaped air passage can be formed by 4, the air passage can be formed without forming a special partition or wall, and the size can be reduced. Further, by inserting and arranging the circuit component such as the capacitor 90 on the circuit board 80 in the passage space 27, the size can be further reduced. Moreover, by forming the storage chamber 74, the fragrance can be released.

The present invention is not limited to the embodiments as described above, and can be carried out in various modes without departing from the gist of the present invention.

[0026]

As described in detail above, the warm air drying device of the present invention can form an air passage without forming a special partition or wall, and can be downsized. Further, by arranging the circuit components on the circuit board inside the hot air duct, further miniaturization can be achieved.
Further, by forming the storage chamber, the fragrance can be released.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a warm air drying device as one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG. 2;

FIG. 4 is a sectional view taken along line CC of FIG.

FIG. 5 is a cross-sectional view of the fragrance case of the present embodiment.

FIG. 6 is an electric circuit diagram of the warm air drying device of this embodiment.

[Explanation of symbols]

 1 ... Lower case 6 ... Upper case 8 ... Suction port 14 ... Discharge port 15 ... Case 24 ... Warm air duct 26 ... Circular casing 27 ... Passage space 28 ... Flat plate 30 ... Side plate 32 ... Impeller 34 ... Motor 68 ... Air freshener Case 74 ... Storage room 80 ... Circuit board 90 ... Capacitor

Claims (3)

[Claims] 1. A warm air duct, in which a heating element is incorporated, is arranged substantially vertically and with its discharge direction facing downward, in a case having a suction port opened downward. A warm air, characterized in that a motor is inserted into the hollow interior, and the warm air duct having a width of about half of the circular casing is tangentially connected to a circular casing accommodating the impeller from one side of the circular casing. Drying device. 2. The circuit according to claim 1, wherein the circuit board of the motor is arranged along the hot air duct, and the circuit component on the board is arranged inside the hot air duct. Air dryer. 3. The warm air drying device according to claim 1, wherein a storage chamber for the fragrance is formed on the side surface of the case near the suction port, and the storage chamber communicates with the inside of the case.