JP2003180555A - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the structure of a blast duct, reduce the area of a sealed portion preventing pressure leakage, decrease the overall size of a product, lower the cost by cutting the number of parts and assembly man-hours for preventing air leakage and eliminate discomfort to a user by shielding or silencing an offensive sound generated from a blower. <P>SOLUTION: The band dryer has a warm air generating means consisting of a blower and a heating element provided in the body and a high pressure sealed unit having a jet nozzle delivering warm air from the warm air generation means, incorporating the warm air generation means and integrated with the jet nozzle. When the blower and the jet nozzle are adjacent to each other, the cubic volume of the closed space can be reduced, a sealing member needed for tight closure also can be minimized and the overall size of a product can be reduced. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand dryer for washing hands in a washroom, a toilet, etc. and drying wet hands with warm air.

[0002]

2. Description of the Related Art Conventionally, a hand dryer of this type is known as shown in FIG.

As shown in the figure, the main body 1 fixed to the wall surface
Reference numeral 01 is composed of a front case 102 and a water tray 103 protruding from the lower part.
A drying space 102a is formed between the water receiving tray 103 and the water receiving tray 103. An air blower 104, a heat generating means 105, and a control means 108 are provided in the front case 102, and a blower blow nozzle 106 is provided at a lower end portion of the front case 102.
Is installed so as to blow air toward the water receiving tray 103 toward the drying space 102a. In addition, blast blowing nozzle 1
In the vicinity of 06, a detection means 110 for detecting the hand that has extended into the drying space 102a is provided, and the control means 108 is provided.
Receives the detection signal of the detection means 110 and drives and controls the blower device 104 and the heat generation means 105. Further, protruding walls 107 are formed on the front part and the left and right side parts of the water tray 103.

In the above structure, the wet hand is in the dry space 10
When it is inserted into 2a, it is detected by the detection means 110, warm air is formed by the air blower 104 and the heat generation means 105, and is blown from the blowout nozzle 106. At this time, warm air blows on the hand that is extended, and the hand is dried. When the hand is retracted, the detection means 110 does not detect any more.
04 and the heating means 105 are stopped.

Further, the water droplets separated from the hand are water receiving tray 103.
However, since the air is easily scattered by the air blown from the air blowing nozzle 106, the projecting walls 107 on the front and side portions of the water receiving tray 103 prevent the water from scattering around.

Further, a fixed cover 111 for fixing the blower 104, a blow-off nozzle 106, and a suction space 112.
The air blower 104 is hermetically sealed by the separation cover 113 that separates the air blower 104, and a high static pressure state in which the air blower path connecting all the components is raised above the atmospheric pressure is formed.

[0007]

In such a conventional hand dryer, due to the installation relationship between the blower and the blowing nozzle,
There is a problem that the size of the entire product becomes large, and it is required to reduce the size of the entire product.

Further, there is a problem that the pressure loss tends to increase due to the installation relationship between the blower and the blowing nozzle, and it is required to reduce the pressure loss in the main body.

Further, there is a problem that the drying time is long and the comfort is poor, so that it is required to create circulating air in the drying chamber to dry the hand.

Further, in order to shorten the drying time, it is necessary to increase the wind speed and the air volume. For that purpose, it is possible to prevent air leakage in the air blowing path from the vicinity of the air blowing device to the blowout nozzle, and to make the air inside the air blowing path more than atmospheric pressure. Although it is necessary to increase the static pressure by increasing the pressure by 5 to 20 kPa, there is a problem that a large area of the seal member for preventing pressure leakage is required because each member has a complicated structure, and thus there is a problem in the air blow path. It is required to reduce the area of the seal portion that has a simple structure and prevents pressure leakage.

Further, since a large amount of air leakage means for preventing the leakage of the high static pressure air generated from the air blower is required, there is a problem that the number of parts and the number of assembling steps increase and the cost increases. It is required to reduce the cost by reducing the number of parts and the number of assembling steps for preventing air leakage.

Further, since the electric blower serving as a blower is installed near the blowout nozzle, high-frequency noise such as rotational noise generated from the electric blower is directly emitted from the blowout hole of the blowout nozzle to the outer space, which is annoying. There is a problem that sound is generated, and it is required to eliminate discomfort to the user by insulating and muting annoying sound generated from the air blowing means.

Further, by providing the sound insulation wall and the sound deadening space, there is a problem that the passage area is decreased and the pressure loss is increased, and the blown air from the blowout nozzle becomes slower. It is required that high-speed air be blown out and the drying time of hands can be shortened.

Further, if the sound insulation wall and the sound deadening space are installed, there is a problem that the manufacturing cost increases if the joint portion remains divided into two parts, and the same shape can be configured with as few divisions as possible to prevent air leakage. It is required to reduce the cost by reducing the number of parts and the number of assembling steps.

Further, there is a problem that noise emitted from the suction port of the air blowing means passes through the main body to generate noise, and the noise generated from the suction port of the air blowing means is silenced so that the user feels uncomfortable. Is required to be eliminated.

Further, when solving the problem that the sound emitted from the suction port of the air blowing means is transmitted through the main body, if the background noise at the place of use is lower, there is a problem that must be further reduced. Therefore, it is required to further muffle the noise generated from the suction port of the blower unit to eliminate the discomfort to the user and prevent the noise generation in the surroundings.

Further, in the case where the sound absorbing material is attached to the suction port of the blowing means, if it is peeled off, it is sucked into the blowing means,
There is a problem that the motor locks and causes a failure. Therefore, it is required to prevent the sound absorbing material from being sucked into the suction port and prevent the failure of the motor.

Further, there is a problem that the sound emitted from the outlet of the blower becomes a high frequency sound and is emitted from the blowout hole of the nozzle outlet. By absorbing the sound emitted from the outlet of the blower, the sound is emitted to the user. It is required to prevent the discomfort of.

Further, there is a problem that a fluid turbulence is generated when the high-speed air is emitted from the air outlet, and the noise rises. Even if the high-speed air is emitted from the air outlet, the turbulence noise should be minimized. Is required.

The present invention is intended to solve such a conventional problem, the size of the entire product can be reduced, the pressure loss in the main body can be reduced, and the circulation in the drying chamber can be reduced. Can create wind and dry your hands,
Further, the area of the seal portion for preventing pressure leakage can be reduced with a simple configuration in the air passage, and the cost can be reduced by reducing the number of parts and the assembly man-hour for preventing air leakage. In addition, sound insulation and muffling of jarring noise generated by the air blower can eliminate user discomfort, increase pressure loss, generate high-speed air from the blowing nozzle, and reduce hand drying time. It can be done in a short time, and with as few divisions as possible,
The same shape can be configured, the cost can be reduced by reducing the number of parts and the assembly man-hours for preventing air leakage, and the noise generated from the suction port of the air blower can be suppressed to prevent the user from being injured. You can eliminate the pleasure,
In addition, by further muting the noise generated from the suction port of the air blower, it is possible to eliminate the discomfort to the user and prevent the generation of noise in the surroundings, and also to prevent the sound absorbing material from being sucked into the suction port. Can be prevented, and by absorbing the radiated sound from the discharge port of the blower, it is possible to prevent discomfort to the user, and even if high-speed air is emitted from the blowout hole, turbulent noise An object is to provide a hand dryer that can be reduced.

[0021]

A hand dryer according to the present invention comprises:
In order to achieve the above object, there is provided a hot air generating means provided with an air blower and a heating element provided inside the main body, and a blowing nozzle for sending warm air from the warm air generating means, and an opening of the blowing nozzle. The plane in which is present is parallel to the axis of the rotating body in the blower.

According to the present invention, a hand dryer which can reduce the size of the entire product can be obtained.

Further, the other means has a warm air generating means composed of an air blower and a heating element provided inside the main body, and a blowing nozzle for blowing the warm air from the warm air generating means, and the opening of the blowing nozzle. The plane in which the part exists and the axis of the rotating body in the blower are parallel to each other, and the straight line indicating the longitudinal direction of the opening is also parallel to the axis.

Further, according to the present invention, a hand dryer capable of reducing the pressure loss in the main body can be obtained.

Further, the other means has a warm air generating means composed of an air blowing device and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means, and the opening of the blow nozzle The plane in which the portion exists and the axis of the rotating body in the blower are parallel to each other, and the straight line indicating the longitudinal direction of the opening is parallel to the axis so that the warm air is blown into the hand drying chamber.

Further, according to the present invention, there can be obtained the hand dryer which can circulate the air in the drying chamber to dry the hand.

Further, the other means has a hot air generating means composed of an air blowing device and a heating element provided inside the main body, and a blowing nozzle for sending warm air from the warm air generating means, and the opening of the blowing nozzle The plane in which the part exists and the axis of the rotating body in the blower are parallel to each other, the hot air generating means is incorporated, and the high-pressure seal unit integrated with the blowing nozzle is provided.

Further, according to the present invention, it is possible to obtain a hand dryer which has a simple structure in the air passage and can reduce the area of the seal portion for preventing pressure leakage.

As another means, a high pressure seal unit
It is divided, and a concavo-convex portion is provided at the joint of the divided surfaces.

Further, according to the present invention, the hand dryer which can reduce the cost by reducing the number of parts and the number of assembling steps for preventing air leakage can be obtained.

Another means is to provide a sound insulation wall and a sound deadening space inside the high-pressure seal unit.

According to the present invention, it is possible to obtain the hand dryer which can eliminate the unpleasant feeling to the user by insulating and muting the jarring sound generated from the blowing means.

Another means is to have an R shape on the upper part of the sound insulation wall and to make the area of the ventilation passage of the sound deadening space larger than the blowing area of the blower.

Further, according to the present invention, it is possible to obtain a hand dryer which can blow the high speed air from the blowing nozzle and can dry the hand in a short time without increasing the pressure loss.

Another means is to install a high pressure seal unit
The structure is divided into a nozzle / sound insulation wall unit, a muffling unit, and a blower unit, and a concavo-convex portion is provided at the joint of the dividing surfaces.

According to the present invention, it is possible to obtain a hand dryer which can be constructed with the same shape with as few divisions as possible and can reduce the cost by reducing the number of parts and the number of assembling steps for preventing air leakage. .

Another means is to have a cylindrical sound deadening part having an inner diameter larger than the diameter of the suction port of the blower near the suction port.

According to the present invention, it is possible to obtain the hand dryer which can eliminate the discomfort to the user by silencing the noise generated from the suction port of the blower.

Another means is to have a suction port cover in front of the suction port, provide the suction port cover at a distance that secures an air passage area at least larger than the suction port, and at least one of the suction port covers. A sound absorbing material is attached to the surface.

Further, according to the present invention, by further muting the noise generated from the suction port of the blower, it is possible to obtain the hand dryer which can eliminate the discomfort to the user and prevent the noise from being generated in the surroundings. .

Another means is to provide a plurality of holes in a part of the suction port cover and install a sound absorbing material on the side opposite to the suction port.

According to the present invention, it is possible to obtain the hand dryer which can prevent the sound absorbing material from being sucked into the suction port and prevent the failure of the motor.

Another means is to attach a sound absorbing material around the blower device so as not to block the ventilation passage.

According to the present invention, it is possible to obtain the hand dryer which can prevent the discomfort of the user by absorbing the sound emitted from the discharge port of the blower.

Another means is to make an R shape on the inner peripheral surface of the blowout hole of the blowout nozzle. Further, according to the present invention, it is possible to obtain the hand dryer which can minimize the turbulent flow noise even when the high speed air is discharged from the blowout hole.

[0046]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has a hot air generating means composed of an air blowing device and a heating element provided inside a main body, and a blowing nozzle for sending warm air from the warm air generating means. When the plane in which the opening exists and the axis of the rotating body in the blower are parallel, and when the plane in which the opening is present and the axis of the rotating body are parallel, the blower and the blowing nozzle should be close to each other. It has the effect that

Further, it has a warm air generating means composed of an air blowing device and a heating element provided inside the main body, and a blowing nozzle for blowing warm air from the warm air generating means, and an opening portion of the blowing nozzle exists. The plane is parallel to the axis of the rotating body in the blower, and the straight line indicating the longitudinal direction of the opening is parallel to the axis, and the straight line indicating the longitudinal direction of the opening is parallel to the axis of the rotating body. In this case, the fluid flow inside the main body coincides with the nozzle blowing direction, the pressure loss inside does not increase, and the blower and the blowing nozzle can be brought close to each other.

Further, it has a warm air generating means composed of an air blower and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means, and an opening portion of the blow nozzle exists. The plane is parallel to the axis of the rotating body in the blower, and the straight line indicating the longitudinal direction of the opening is also parallel to the axis, so that warm air is blown into the hand drying chamber and is blown into the drying chamber. Thus, circulating air can be formed in the drying chamber, and hand drying can be easily performed.

Further, it has a warm air generating means composed of an air blower and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means, and an opening of this blow nozzle exists. The plane and the axis of the rotating body in the blower are parallel to each other, the hot air generating means is incorporated, and the high pressure seal unit integrated with the blowout nozzle is provided.
In order to achieve a high speed of ~ 150 m / s, it is necessary to raise the static pressure to about 5 to 20 kPa by the air blower and discharge the air from the blowout holes of the blowout nozzle, and it is necessary to maintain the static pressure around the blower. Therefore, it is necessary to make a sealed state with a sealing member, but if the blower and the blowing nozzle are close to each other, the volume of the sealed space can be reduced, and the sealing member necessary for sealing is also minimized. Can be suppressed.

Further, the high-pressure seal unit is divided into two, and the concavo-convex portion is provided in the joint portion of the division surface. By making the number of the high-pressure seal unit as small as possible, the area of the joint portion can be suppressed and The seal member can be hermetically sealed without using the joint portion.

In addition, a sound insulation wall and a sound deadening space are provided inside the high-pressure seal unit, so that high-frequency noise such as rotational noise generated from an electric blower as a blower can be reduced by the effect of the sound insulation and the sound absorption. You can increase the effect by muting before it is converted to wind.

In addition, the upper part of the sound insulation wall has an R shape, and the area of the ventilation passage of the sound deadening space is made larger than the blowing area of the blower, so that the pressure loss is prevented from increasing and the blowing nozzle is prevented. It is possible to obtain the high-speed air required for hand drying.

Further, the high-pressure seal unit is divided into three parts, which are a nozzle / sound insulation wall unit, a muffling unit, and a blower unit, and a concavo-convex portion is provided at the joint of the divided surfaces. By making the sound insulation wall and the sound insulation wall the same component, the manufacturing method is simplified, complicated assembly is not necessary, and the joints of parts that cause air leakage can be minimized, and pressure leakage at the joints It can be prevented.

In addition, a cylindrical sound deadening part having an inner diameter larger than the diameter of the suction port of the blower is provided near the suction port, and the blowing noise generated from the blower is mainly generated from the suction port. High-frequency sound can be reduced by the effect of sound absorption.

Further, a suction port cover is provided in front of the suction port,
It is said that the suction port cover is provided at a distance that secures an air passage area of at least the suction port or more, and a sound absorbing material is attached to either one of the surfaces of the suction port cover to increase the pressure loss. The high-frequency sound can be reduced by preventing it and absorbing it more effectively.

Further, a plurality of holes are provided in a part of the suction port cover, and the sound absorbing material is installed on the side opposite to the suction port. Even if the sound absorbing material is easily peeled off, it is sucked into the suction port. You can avoid it.

Further, since the sound absorbing material is attached around the air blower so as not to block the ventilation passage, the noise of the electric motor generated from the air outlet of the air blower can be reduced.

Further, the inner peripheral surface of the blow-out hole of the blow-out nozzle has an R shape, which can reduce the occurrence of turbulent flow due to sudden expansion at the time of discharging from the blow-out hole to the outer space, and can improve the high speed from the blow-out hole Generation of turbulent noise due to wind can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.

[0060]

(Embodiment 1) As shown in FIGS. 1 to 3, a main body 1 fixed to a wall surface is a main unit 2 for generating hot air.
And a drying chamber 3 having a substantially C-shaped cross section at the bottom thereof,
In the main unit 2, a high pressure seal unit 4
Inside the high-pressure seal unit 4, a hot-air generating means 7 including a blower 5 and a heating element 6 is installed, which is integrated with the high-pressure seal unit 4 and is a blow-out nozzle disposed above the drying chamber 3. Converted to high speed wind by 8. The shaft 9 of the rotating body of the blower 5 is installed parallel to the plane 11 existing in the opening 10 of the blowout nozzle 8.

Further, a control means 13 is provided in the main unit 2, and a detection means 14 for detecting the hand that has been inserted into the drying chamber 3 is provided in the vicinity of the blowing nozzle 8, and the control means 13 In response to the detection signal of the detection means 14, the blower device 5 and the heating element 6 are drive-controlled, and a removable water receiver 15 is provided in the lower part of the drying chamber 3.

In the above structure, the air blower 5 and the blowing nozzle 8 can be installed close to each other, and when the hand is inserted into the drying chamber 3, the detection means 14 detects the hand and the detection output is turned on, and the control means. The air blower 5 and the heating element 6 are operated via 13, the high-speed air blown out from the blow-out nozzle 8 hits the surface of the hand and separates the attached water droplets to dry them, and the separated water droplets are stored in the drying chamber 3. It adheres to the wall surface and can naturally flow to the water receiver 15 below the drying chamber 3.

The blower 5 is an electric blower generally used for a vacuum cleaner or the like, and includes a brush motor and a brushless motor, and a turbo fan is used to raise the temperature by high-speed rotation of the motor. Is sent while cooling.

Even in the hand dryer in which the drying chamber 3 is removed and only the main unit shown in FIG. 3 is used, the hand drying effect can be obtained and the size can be reduced.

(Embodiment 2) As shown in FIGS. 1 and 2, a main body 1 fixed to a wall surface has a main unit 2 for generating warm air, and a drying chamber 3 having a substantially C-shaped cross section under the main unit 2.
The main unit 2 includes a high-pressure seal unit 4, and a high-pressure seal unit 4 including therein a hot-air generating unit 7 including a blower 5 and a heating element 6. It is integrated and is converted into high-speed air by the blow-out nozzle 8 provided in the upper part of the drying chamber 3,
The shaft 9 of the rotating body of the blower 5 is installed parallel to a plane 11 existing in the opening 10 of the blowout nozzle 8, and a straight line 12 indicating the longitudinal direction of the opening 10 is parallel to the shaft 9. Has become.

Further, a control means 13 is provided in the main unit 2, and a detection means 14 for detecting a hand held out in the drying chamber 3 is provided in the vicinity of the blowing nozzle 8, and the control means 13 is provided. In response to the detection signal of the detection means 14, the blower device 5 and the heating element 6 are drive-controlled, and a removable water receiver 15 is provided in the lower part of the drying chamber 3.

In the above structure, the air blower 5 and the blowing nozzle 8 can be installed close to each other, and when the hand is inserted into the drying chamber 3, the detection means 14 detects the hand and the detection output is turned on, and the control means. The air blower 5 and the heating element 6 are operated via 13, the high-speed air blown out from the blow-out nozzle 8 hits the surface of the hand and separates the attached water droplets to dry them, and the separated water droplets are stored in the drying chamber 3. It adheres to the wall surface and can naturally flow to the water receiver 15 below the drying chamber 3.

The blower 5 includes an electric blower,
It represents a general blowing means.

Even in the hand dryer in which the drying chamber 3 is removed and only the main unit shown in FIG. 3 is used, the hand drying effect can be obtained and the size can be reduced.

(Embodiment 3) As shown in FIGS. 1 and 2, a main body 1 fixed to a wall surface has a main unit 2 for generating warm air, and a lower portion of a drying chamber 3 having a substantially C-shaped cross section.
The main unit 2 includes a high-pressure seal unit 4, and a high-pressure seal unit 4 including therein a hot-air generating unit 7 including a blower 5 and a heating element 6. It is integrated and is converted into high-speed air by the blow-out nozzle 8 provided in the upper part of the drying chamber 3,
The shaft 9 of the rotating body of the blower 5 is installed parallel to the plane 11 existing in the opening 10 of the blowout nozzle 8, and the straight line 12 indicating the longitudinal direction of the opening 10 is parallel to the shaft 9, The opening 10 of the blowing nozzle 8 is directed to the inside of the drying chamber 3.

Further, a control means 13 is provided in the main unit 2, and a detection means 14 for detecting the hand that has been inserted into the drying chamber 3 is provided in the vicinity of the blowing nozzle 8, and the control means 13 In response to the detection signal of the detection means 14, the blower device 5 and the heating element 6 are drive-controlled, and a removable water receiver 15 is provided in the lower part of the drying chamber 3.

In the above structure, the blower 5 and the blowing nozzle 8 can be installed close to each other, and when the hand is inserted into the drying chamber 3, the detection means 14 detects the hand and the detection output is turned on, and the control means. The air blower 5 and the heating element 6 are operated via 13, and the high-speed air blown out from the blow-out nozzle 8 hits the surface of the hand, dries the adhered water droplets while separating them, and creates a flow of air circulating around the hand. The water droplets that can be formed and adhere to the wall surface inside the drying chamber 3 can naturally flow to the water receiver 15 below the drying chamber 3.

The blower 5 includes an electric blower,
It represents a general blowing means.

(Embodiment 4) In the present embodiment and subsequent embodiments, the same components as those described in the previous embodiment will be designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 1, the main body 1 fixed to the wall surface has a main unit 2 for generating warm air, and a drying chamber 3 having a substantially C-shaped cross section under the main unit 2. Is equipped with a high-pressure seal unit 4 and a hot-air generating means 7 composed of a blower 5 and a heating element 6 inside the high-pressure seal unit 4, and the static pressure in the high-pressure seal unit 4 is controlled by the blower 5. It is raised and integrated with the high-pressure seal unit 4, and is converted into high-speed air by the blow-out nozzle 8 arranged in the upper part of the drying chamber 3, and the shaft 9 of the rotating body of the blower 5 is connected to the blow-out nozzle 8. It is installed parallel to the plane 11 existing in the opening 10.

Further, a control means 13 is provided in the main unit 2, and a detection means 14 for detecting a hand inserted into the drying chamber 3 is provided in the vicinity of the blowing nozzle 8.
The control means 13 receives the detection signal of the detection means 14 to drive and control the blower device 5 and the heating element 6, and has a removable water receiver 15 at the lower part of the drying chamber 3.

In the above structure, when the hand is inserted into the drying chamber 3, the detection means 14 detects the hand, the detection output is turned on, and the blower 5 and the heating element 6 are operated via the control means 13. , The high-pressure airflow generated from the blower 5
By raising the inside of the high-pressure seal unit 4 to about 5 to 20 kPa and converting it into high-speed air from the blowing nozzle 8, 60
The high-speed air blown out from the blowing nozzle 8 hits the surface of the hand and dries while adhering the separated water droplets, and the separated water droplets adhere to the wall surface in the drying chamber 3, It is possible to naturally flow to the water receiver 15 below the drying chamber 3.

The blower 5 includes an electric blower,
It represents a general blowing means.

Even in the hand dryer in which the drying chamber 3 is removed and only the main unit shown in FIG. 3 is used, the hand drying effect can be obtained and the size can be reduced.

(Fifth Embodiment) In the fifth and subsequent embodiments, the same components as those described in the previous embodiment will be designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIGS. 4 and 5, the high-pressure seal unit 4 is divided into two, and the joint portion 17 on the divided surface is provided with an uneven portion.

In the above structure, the high-pressure airflow generated from the blower unit 5 is 5 to 20 k inside the high-pressure seal unit 4.
By increasing the pressure to about Pa, the pressure leak is prevented by the uneven shape of the joint portion 17 on the split surface, and no leak prevention packing or the like is required.

(Embodiment 6) As shown in FIGS. 6 and 7, a sound insulation wall 18 and a sound deadening space 19 are provided inside the high-pressure seal unit 4, and the blower 5 has an impeller having a plurality of turbo-shaped blades. 20 are included.

In the above structure, when the blower 5 is operated, the turbo-shaped impeller 20 rotates at a high speed of 20000 rpm or more, so that high-frequency noise is generated due to the number of blades and the number of revolutions, and the blowing nozzle 8 and the impeller are rotated. 20
The noises emitted from the blow-out nozzle 8 can be prevented due to the close proximity to each other.

(Embodiment 7) As shown in FIG.
1 has an R shape on the upper part, and the area of the ventilation passage of the muffling space 22 is larger than the blowing area of the blower 5.

In the above structure, the blower 5 is operated to release the high-pressure air, but the collision with the sound insulation wall 21 can be prevented, and at the same time, the pressure loss generated when passing through the ventilation passage can be reduced, so that the efficiency can be improved. It is often converted into high-speed air from the blowing nozzle 8 and sent out, and the drying time can be shortened.

(Embodiment 8) As shown in FIGS. 9 and 10,
The high-pressure seal unit 4 is divided into three parts, and the structure is divided into a nozzle / sound insulation wall unit 23 and a muffling unit 24.
The air blower unit 25 is provided with a concavo-convex portion on the joint portion 17 of the divided surfaces.

In the above structure, the high-pressure airflow generated from the blower device 5 flows within the high-pressure seal unit 4 for 5 to 20 k.
By increasing the pressure to about Pa, the pressure leak is prevented by the uneven shape of the joint portion 17 on the split surface, and no leak prevention packing or the like is required.

(Embodiment 9) As shown in FIG. 11, a cylindrical sound deadening part 27 having an inner diameter D2 larger than the diameter D1 of the suction port 26 of the blower 5 is provided near the suction port 26.

In the above structure, when the blower 5 is operated, the fluid noise generated by the rotation of the impeller 20 is
Since it is discharged from the suction port 26 near the impeller 20,
Due to the effect of sound absorption, sound is muted from the vicinity of the suction port 26. At this time, the inner diameter D2 that is larger than the diameter D1 of the suction port 26 prevents pressure loss from increasing.

(Embodiment 10) As shown in FIG. 12, a suction port cover 28 is provided in front of the suction port 26, and the suction port cover 28 is provided at a distance that secures an air passage area at least above the suction port 26. The sound absorbing material 29 is attached to one of the surfaces of the suction port cover 28.

In the above structure, the sound absorbing material 29 surrounds the periphery of the suction port 26 without increasing the pressure loss, so that more effective sound deadening can be performed.

(Embodiment 11) As shown in FIG. 12, a plurality of holes 30 are provided in a part of the suction port cover 28, and the suction port 2
The sound absorbing material 29 is provided on the side opposite to the side 6.

In the above structure, when the air blower 5 is operated, the turbo-shaped impeller 20 rotates and tries to suck air with a large suction force from the suction port 26, so that the sound absorbing material 29 near the suction port 26 is removed. You can prevent inhalation.

(Embodiment 12) As shown in FIG. 12, a sound absorbing material 31 is attached around the blower device 5 so as not to block the ventilation passage.

A motor 33 is installed near the air outlet 32 of the blower 5. In the above configuration, the air blower 5
Since there is noise generated from the motor 33 when is activated,
The sound absorbing material 31 can muffle the sound.

(Embodiment 13) As shown in FIG. 13, an R shape 34 is attached to the inner peripheral surface of the opening 10 of the blowout nozzle 8.

In the above structure, it is possible to reduce the occurrence of turbulent flow due to the sudden expansion when the air is discharged from the opening 10 of the blowout nozzle 8 to the outside space.

[0099]

As is apparent from the above embodiments, according to the present invention, the hot air generating means including the air blower and the heating element provided inside the main body, and the hot air from the hot air generating means are delivered. A hand dryer having a blow-out nozzle and having a plane in which an opening of the blow-out nozzle exists and an axis of a rotating body in the blower are parallel to each other can provide a hand dryer having an effect of reducing the size of the entire product. .

Further, there is provided a hot air generating means including a blower and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means, and a plane having an opening of the blow nozzle. And the axis of the rotating body in the air blower are parallel, and the straight line indicating the longitudinal direction of the opening is also parallel to the axis, thereby providing a hand dryer having an effect of reducing pressure loss in the main body. it can.

A plane having a hot air generating means including a blowing device and a heating element provided inside the main body, and a blowing nozzle for blowing warm air from the warm air generating means, and an opening of the blowing nozzle is present. It is possible to provide a hand dryer having an effect of drying the hands by creating a circulating air in the drying chamber by sending warm air into the hand drying chamber by making the axes of the rotating bodies in the air blowing device parallel to each other.

A warm air generating means including a blower and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means are provided. Providing a hand dryer that has an integrated high-pressure seal unit, and has the effect of reducing the size of the entire product by reducing the area of the seal part that prevents pressure leakage by making the air flow path a simple structure. it can.

Further, the high-pressure seal unit is divided into two, and the concavo-convex portion is provided at the joint of the divided surfaces, so that the number of parts and the number of assembling steps for preventing air leakage can be reduced, and the cost can be reduced. A hand dryer can be provided.

Further, by providing a sound insulation wall and a sound deadening space inside the high-pressure seal unit, a hand dryer having an effect of eliminating discomfort to the user by sound insulating and muffling an offensive sound generated from the air blower. Can be provided.

Further, since the sound insulating wall has an R shape on the upper part and the area of the ventilation passage of the sound deadening space is made larger than the blowing area of the blower, pressure loss is not increased and high-speed air is blown from the blowing nozzle. Thus, it is possible to provide a hand dryer having an effect that the hand can be dried in a short time.

Further, the high-pressure seal unit is divided into three parts, the nozzle / sound insulation wall unit, the muffling part unit, and the blowing part unit are provided. It is possible to provide a hand dryer having the same shape and having an effect of reducing the cost by reducing the number of parts and the number of assembling steps for preventing air leakage.

Further, by providing a cylindrical sound deadening part having an inner diameter larger than the diameter of the suction port of the blower device near the suction port, noise generated from the suction port of the blower device is silenced, which is not useful to the user. It is possible to provide a hand dryer having an effect of eliminating the pleasant feeling.

Further, it has a suction port cover having an area equal to or larger than the suction port, and the suction port cover is provided at a distance ensuring at least an air passage area larger than the suction port, and one of the surfaces of the suction port cover is provided. By attaching a sound absorbing material, the noise generated from the suction port of the air blower can be further muted to eliminate discomfort to the user and prevent the generation of noise in the surrounding area. Can be provided.

Further, since a plurality of holes are provided in a part of the suction port cover and the sound absorbing material is installed on the side opposite to the suction port, it is possible to prevent the sound absorbing material from being sucked into the suction port and to prevent a motor failure. It is possible to provide a hand dryer having the effect of being able to prevent it.

Further, since the sound absorbing material is attached around the air blower so as not to block the ventilation passage, the sound emitted from the outlet of the air blower is absorbed to prevent the user from feeling uncomfortable. It is possible to provide a hand-drying device with good quality.

Further, since the inner peripheral surface of the blowout hole of the blowout nozzle has an R shape, there is provided a hand dryer having an effect that the turbulent noise can be minimized even if high-speed air is discharged from the blowout hole. Can be provided.

[Brief description of drawings]

FIG. 1 is a side sectional view of a hand dryer according to first to fifth embodiments of the present invention.

FIG. 2 is a perspective view of a high-pressure seal unit of the same hand dryer.

FIG. 3 is a side sectional view in the case where the same drying room is not provided.

FIG. 4 is a perspective view of a high-pressure seal unit of the same hand dryer when the unit is divided.

FIG. 5 is an enlarged view of the joint part.

FIG. 6 is a side sectional view of the hand dryer according to the sixth embodiment.

[Figure 7] Same frequency-noise graph

FIG. 8 is a side sectional view of the hand dryer according to the seventh embodiment.

FIG. 9 is a perspective view of a high-pressure seal unit of the hand dryer according to the eighth embodiment.

FIG. 10 is a perspective view of the same division.

FIG. 11 is a front sectional view of a hand dryer according to the ninth embodiment.

FIG. 12 is a front cross-sectional view of a hand dryer according to Examples 10-12.

FIG. 13 is a sectional view of a blowing nozzle of a hand dryer according to the thirteenth embodiment.

FIG. 14 is a side sectional view of a conventional hand dryer.

[Explanation of symbols]

1 body 2 main unit 3 drying room 4 High pressure seal unit 5 Blower 6 heating element 7 Hot air generating means 8 blowing nozzle 9 axes 10 openings 11 plane 12 straight lines 13 Control means 14 Detection means 15 Water receiver 17 joints 18 sound insulation wall 19 silence space 20 impeller 21 sound insulation wall 22 silence space 23 Nozzle / sound insulation wall unit 24 silencer unit 25 Blower unit 26 Suction port 27 Cylindrical silencer 28 Suction port cover 29 Sound absorbing material 30 holes 31 sound absorbing material 32 outlet 33 motor 34 R shape

Continued front page    (72) Inventor Jiro Yuzuda             4017 Shimo-Nakanda Matsu, Takarai-cho, Kasugai-shi, Aichi             Shimo Ecology Systems Co., Ltd. (72) Inventor Yukihisa Hasegawa             4017 Shimo-Nakanda Matsu, Takarai-cho, Kasugai-shi, Aichi             Shimo Ecology Systems Co., Ltd. (72) Inventor Takao Takeyama             4017 Shimo-Nakanda Matsu, Takarai-cho, Kasugai-shi, Aichi             Shimo Ecology Systems Co., Ltd. (72) Inventor Naoki Yoneda             4017 Shimo-Nakanda Matsu, Takarai-cho, Kasugai-shi, Aichi             Shimo Ecology Systems Co., Ltd. (72) Inventor Tadashi Ogawa             4017 Shimo-Nakanda Matsu, Takarai-cho, Kasugai-shi, Aichi             Shimo Ecology Systems Co., Ltd.

Claims (13)

[Claims] 1. A warm air generating means comprising a blower and a heating element provided inside the main body, and a blow nozzle for blowing warm air from the warm air generating means, and an opening of the blow nozzle is present. A hand dryer in which the plane and the axis of the rotating body in the blower are parallel. 2. A warm air generating means comprising a blower and a heating element provided inside the main body, and a blowing nozzle for blowing warm air from the warm air generating means, and an opening of the blowing nozzle is present. A hand dryer in which the plane is parallel to the axis of the rotating body in the blower, and the axis is parallel to a straight line indicating the longitudinal direction of the opening. 3. A hot air generating means comprising an air blower and a heating element provided inside the main body, and a blowing nozzle for blowing warm air from the warm air generating means, and an opening of the blowing nozzle is present. A hand drying device that blows warm air into the hand drying chamber by making the plane parallel to the axis of the rotating body in the air blower, and further making the axis parallel to the straight line indicating the longitudinal direction of the opening. 4. A hot air generating means comprising an air blower and a heating element provided inside the main body, and a blowing nozzle for blowing warm air from the warm air generating means, and an opening of the blowing nozzle is present. A hand dryer having a high-pressure seal unit integrated with the blowing nozzle, in which the plane and the axis of the rotating body in the air blower are parallel to each other, the hot air generator is provided inside. 5. The hand dryer according to claim 4, wherein the high-pressure seal unit is divided into two, and a concavo-convex portion is provided at a joint portion of the divided surfaces. 6. The hand dryer according to claim 4, wherein a sound insulation wall and a sound deadening space are provided inside the high-pressure seal unit. 7. The hand dryer according to claim 6, wherein the sound insulating wall has an R-shaped upper portion, and the area of the ventilation passage of the sound deadening space is larger than the blowing area of the blower. 8. The high-pressure seal unit is divided into three parts, and the structure is a nozzle / sound insulation wall unit, a muffling part unit, and a blowing part unit, and a concavo-convex part is provided at a joint part of the divided surfaces. Hand dryer. 9. A hand dryer according to claim 4, 5, 6, 7 or 8, wherein a cylindrical sound deadening part having an inner diameter larger than the diameter of the suction port of the blower is provided near said suction port. 10. A suction port cover is provided in front of the suction port, the suction port cover is provided at a distance that secures an air passage area at least larger than the suction port, and the sound absorbing material is provided on either surface of the suction port cover. Claims 4 and 5 with affixed
The hand dryer according to 6, 7, 8 or 9. 11. The hand dryer according to claim 10, wherein a plurality of holes are provided in a part of the suction port cover, and a sound absorbing material is installed on the side opposite to the suction port. 12. A sound absorbing material is attached around the air blower so as not to block the ventilation passage.
9. The hand dryer according to 9, 10, or 11. 13. The hand dryer according to claim 4, 5, 6, 6, 7, 8, 9, 10, 11 or 12, wherein the inner peripheral surface of the blowout hole of the blowout nozzle has an R shape.