Automatic hand dryer

Abstract

An automatic hand dryer belongs to the field of household machinery, comprising a shell, an opening on the shell, a user puts his hand into the opening, a fixing device, the fixing device is installed on the shell, a pulley is provided on the fixing device, a plurality of fixing devices clamp a rotating body, so that the rotating body rotates, a rotating body, a plurality of fan blades are arranged in the middle of the rotating body, airflow is generated when the fan blades rotate, an inner cover, the inner cover is fixed on the shell and is inside the rotating body, the inner cover is hollowed out around, so that the wind generated by the rotating body can pass through, one side of the inner cover has an opening, the user puts his hand into the opening, a power device, the power device is connected to the rotating body, and drives the rotating body to rotate. The benefit of the invention is that half of the outer side of the inner cover is provided with a wind collecting plate, and there is a large distance between the part without the wind collecting plate and the fan blades, so as to avoid the pressure reduction between the fan blades and make the air flow better, and the wind collecting plate can guide the wind into the inner cover to dry the hands.

Description

Technical Field

[0001] The invention relates to an automatic hand dryer, in particular to a device which adopts a rotating body and uses flowing air generated by the rotation of the rotating body to dry hands, and belongs to the field of life machinery. Background Art

[0002] At present, the main hand dryers on the market all use the form of air drying. Most of the hand dryers on the market use fan-style blowing. After long-term use, the air inlet of this hand dryer is usually very dirty and full of bacteria. The hands that have just been washed are actually very dirty after being dried by wind containing a large number of bacteria, but it is not visible. In hospitals and other conditions with particularly strict hygiene requirements, this type of hand dryer will undoubtedly increase the risk of infection for patients. There is no hand dryer on the market that can solve this problem, so there is an urgent need for a clean, hygienic and fast hand drying device. Summary of the invention

[0003] In view of the above-mentioned shortcomings, the present invention provides an automatic hand dryer.

[0004] The present invention is realized by the following technical scheme: an automatic hand dryer, characterized in that:

[0005] A shell, wherein the shell has an opening, and the user extends his hand into the opening;

[0006] A fixing device, the fixing device is installed on the inner wall of the shell, the fixing device has a pulley, and a plurality of fixing devices clamp the rotating body so that the rotating body rotates;

[0007] A rotating body, wherein a plurality of blades are arranged in the middle of the rotating body, and airflow is generated when the blades rotate;

[0008] An inner cover, wherein one end of the inner cover opening is fixed to the housing and is located inside the rotating body. The inner cover is hollowed out around the inner cover so that the wind generated by the rotating body can pass through. One side of the inner cover has an opening, and the user puts his hand into the opening.

[0009] A power device is installed on the shell and is connected to the rotating body to drive the rotating body to rotate.

[0010] The rotating body has evenly arranged fan blades inside, and the fan blades and the normal line of the upper circle of the rotating body form a certain angle a, 0〈a〈70.

[0011] The rotating body has a circle of circular holes at the maximum rotation radius. When water drops from the user's hand on the rotating body, the water is thrown out by the rotating body through the circular holes.

[0012] The outer side of the inner cover is provided with a wind-catching plate, and only half of the outer side of the inner cover is provided with the wind-catching plate.

[0013] The wind-catching plate is a curved plate, which can effectively guide the airflow into the inner cover.

[0014] The inner cover is provided with a heating body, which is located between the wind collecting plates and can effectively heat the air.

[0015] The hand dryer also includes a brush, which is fixed on the shell. One end of the brush contacts the circular hole on the rotating body to wipe off the water thrown out by the rotating body.

[0016] The lower end of the shell is provided with a water leakage hole, through which the water in the hand dryer can flow out.

[0017] The power device is provided with a flexible rod, through which the power device is connected to the rotating body. The flexible rod can prevent the rod connecting the power device and the rotating body from breaking due to the high-speed rotation of the rotating body.

[0018] The benefits of this invention are that the wind-catching plates can direct wind into the inner cover to dry the hands; half of the outer side of the inner cover has wind-catching plates, and the other half does not; there is a large distance between the part without wind-catching plates and the fan blades, which can avoid the pressure reduction between the fan blades and allow the air to flow better; the high-speed rotation of the rotating body drives the internal air flow and reduces external bacteria; the inner cover is hollow, so that the hands are not harmed by the rotating body when they are in the internal airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the present invention;

[0020] Figure 2 It is an external schematic diagram of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the rotating body of the present invention;

[0022] Figure 4 is a cross-sectional view of the rotating body of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the inner cover of the present invention;

[0024] Figure 6 It is a front view of the inner cover described in the present invention.

[0025] In the figure, 1. shell, 101. opening, 102. water leakage hole, 103. baffle, 2. fixing device, 3. rotating body, 301. fan blade, 302. circular hole, 4. inner cover, 401. heating body, 402. wind collecting plate, 5. power device, 501. flexible rod, 6. controller, 7. brush. DETAILED DESCRIPTION

[0026] An automatic hand dryer comprises a shell 1, wherein the shell 1 has an opening 101, into which a user puts a hand; a fixing device 2, wherein the fixing device 2 is mounted on the shell 1, wherein the fixing device 2 has a pulley, wherein a plurality of fixing devices 2 clamp a rotating body 3, so that the rotating body 3 rotates; a rotating body 3, wherein a plurality of blades 301 are arranged in the middle of the rotating body 3, and airflow is generated when the blades 301 rotate; an inner cover 4, wherein the inner cover 4 is fixed on the shell 1 and is located inside the rotating body 3, wherein the inner cover 4 is hollowed out around so that wind generated by the rotating body can pass through, wherein one side of the inner cover 4 has an opening, into which a user puts a hand; and a power device 5, wherein the power device 5 is connected to the rotating body 3, so as to drive the rotating body 3 to rotate.

[0027] The rotating body 3 has evenly arranged blades 301 inside, and the blades 301 form a certain angle a with the normal line of the upper circle of the rotating body 3, 0<a<70, so that the rotating body generates a larger air volume.

[0028] The rotating body 3 has a circle of circular holes 302 at the maximum rotation radius. When water on the user's hand drops onto the rotating body, the water is thrown out by the rotating body through the circular holes 302 .

[0029] The rotating body 3 can be spherical or cylindrical, and similar structures can produce the same effect.

[0030] The hand dryer further comprises a brush 7 , which is fixed on the housing 1 , and one end of the brush 7 contacts the circular hole 302 on the rotating body 3 to wipe off the water thrown out by the rotating body 3 .

[0031] The housing 1 has a water leakage hole 102 at the lower end thereof, through which water in the hand dryer can flow out.

[0032] The power device 5 is provided with a flexible rod 501 , through which the power device 5 is connected to the rotating body 3 . The flexible rod 501 can prevent the rod connecting the power device 5 and the rotating body 3 from breaking due to the high-speed rotation of the rotating body 3 .

[0033] The outer side of the inner cover 4 is provided with a wind catching plate 402, and only half of the outer side of the inner cover 4 is provided with the wind catching plate 402. Half of the outer side of the inner cover 4 is provided with the wind catching plate 402, and the other half is not provided with the wind catching plate 402. There is a large distance between the portion without the wind catching plate 402 and the fan blades 301, which can avoid the pressure reduction between the fan blades 301 and allow the air to flow better.

[0034] The wind-catching plate 402 is a curved plate that can effectively guide the airflow into the inner cover 4 .

[0035] The inner cover 4 has a heater 401, which is installed on the inner cover 4, specifically between each wind-collecting plate 402. When the airflow passes through the inner cover 4, it takes away the heat on the heater 401, thereby increasing the air temperature, increasing the comfort and speeding up the hand drying process.

[0036] The heating element 401 is a PTC heating element.

[0037] During operation, the controller 6 controls the operation of each component. The user puts his hand into the inner cover 4 through the opening 101. The sensing element on the controller 6 senses the hand. At this time, the controller 6 controls the power device 5 to drive the rotating body 3 to rotate. The rotation of the rotating body 3 generates flowing air. When the airflow encounters the wind-catching plates 402 on the inner cover 4, it flows along the wind-catching plates 402 to the inside of the inner cover 4. At the same time, the heating bodies 401 between the wind-catching plates 402 heat the air, and the hot air dries the water on the hands.

[0038] The water on the user's hand drips onto the rotating body 3. As the rotating body 3 rotates, the water overcomes the centripetal force and flows out through the circular hole 302 on the rotating body 3. The brush 7 on the shell brushes the water outside the rotating body 3 off. The brush 7 tilts downward and guides the water down to the bottom of the shell 1. There is a water leakage hole 102 at the bottom of the shell to guide the water out.

[0039] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. An automatic hand dryer, Features: It includes a shell, which has an opening, and the user puts his hand into the opening; a fixing device, which is installed on the inner wall of the shell, and has a pulley, and multiple fixing devices clamp a rotating body to make the rotating body rotate; a rotating body, a plurality of fan blades are arranged in the middle of the rotating body, and airflow is generated when the fan blades rotate; an inner cover, one end of the inner cover opening is fixed on the shell and is inside the rotating body, the inner cover is hollowed out around, so that the wind generated by the rotating body can pass through, and one side of the inner cover has an opening, and the user puts his hand into the opening; a power device, which is installed on the shell, and the power device is connected to the rotating body to drive the rotating body to rotate; the rotating body has evenly arranged fan blades, and the fan blades form a certain angle a with the normal of the circle on the rotating body, 0〈a〈70; the rotating body has a circle of circular holes at the maximum rotation radius.

2. An automatic hand dryer as claimed in claim 1, Features: The outer side of the inner cover is provided with a wind-catching plate, and only half of the outer side of the inner cover is provided with the wind-catching plate.

3. An automatic hand dryer as claimed in claim 2, Features: The wind-catching plate is a curved plate, and the airflow flows through the inner side of the curved plate and enters the inner cover.

4. An automatic hand dryer as claimed in claim 1, Features: The inner cover is provided with a heating body, and the heating body is located between each wind collecting plate.

5. An automatic hand dryer as claimed in claim 1, Features: The utility model also comprises a brush which is fixed on the shell body, and one end of the brush is in contact with the circular hole on the rotating body.

6. An automatic hand dryer as claimed in claim 1, Features: The lower end of the shell is provided with a water leakage hole.

7. An automatic hand dryer as claimed in claim 1, Features: The power device is provided with a flexible rod, and the power device is connected with the rotating body through the flexible rod.

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