JP3506198B2 - Hand dryer and regenerative air heater - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand dryer and a heat storage type air heater for blowing and drying a wet hand after washing with a high-speed air stream.

[0002]

2. Description of the Related Art In order to maintain a hand in a hygienic state, it is necessary to wash the hand and also to perform a drying treatment after the washing in a hygienic manner. Therefore, the wet hand is directly dried by washing or the like. For example, a hand dryer as disclosed in JP-A-2-23918 has been developed.

The hand dryer shown in the above publication is constructed by providing a heating means by an electric heater to a blowing means rotated by an induction motor. The air blower forms an air flow blown to the hand dryer by the rotation of the sirocco type blades, and the electric heater heats the air flow formed by the blower to use the air flow blown to the hand dryer as hot air. According to this type of hand dryer, it is possible to hygienically dry a hand by holding a wet hand over the hand drying section where hot air is blowing. That is, the water content of the hand hit by the hot air is evaporated by the heat, blown off by the wind and removed from the hand without wiping with a woven cloth or the like.

In the above hand dryer, the temperature of the hot air is set to be relatively low in order to apply the hot air directly to the hand. Therefore, it takes a long time for the drying process.
Such a problem related to the drying time is disclosed in, for example, Japanese Patent Laid-Open No. 7-1
This has been overcome by the development of a hand dryer as shown in JP 16076. This hand dryer differs from the former as shown in FIG. 12 in that it converts not a heat but a large amount of air into a high-speed air by the high-pressure air flow generator 101 and the blowing nozzle 102, and this high-speed air movement. Water is used to blow off the water attached to the hand to dry it. The drying process does not take long, and the hand can be dried in about 5 to 10 seconds, and the energy consumption is low.

[0005]

The hand dryer using the kinetic energy of the wind, which has the above-mentioned advantages, also has a drawback that it feels cold wind on the hand and is difficult to use in cold weather. For example, when the outside air temperature drops in winter, cold air is sucked in and is blown to the hand as high-speed wind, so the heat of the hand is directly robbed by the cold wind and the wind blowing on the hand. It will give you a feeling of cold breeze.

The feeling of cold wind associated with such a hand dryer is
It seems that it can be easily solved by warming the air blown by an electric heater, etc., but it is not possible to warm the air blown out without impairing the original characteristics of the device that performs drying processing with a large amount of air in a short time. It is difficult, and in terms of safety as well, there are many technical problems to be overcome, such as separating the heating part from the hands and people who handle it as much as possible. That is, it is extremely impossible to supply a large amount of heat to the air to be blown in an extremely short time when the drying process is completed, even if the electric heater is simply installed in the air feeding passage. Even if the electric heater has a large capacity with a quick start-up, it will not only impair the features of this type of hand dryer developed from the review of the drying method by heat, but it will also dry while the electric heater itself heats. It is difficult to achieve warm air because the treatment is often completed.

The present invention has been made to solve the above-mentioned problems, and its object is to provide a hand dryer for drying the hands by the kinetic energy of the wind by heating the high-speed air stream. It is to eliminate the feeling of cold air during the drying process, and to efficiently and quickly warm the high-speed air stream with an electric heater with a relatively small capacity. Is to avoid, and to promote improvement of installation and usability.

Another object of the present invention is to develop a heat storage type air heating device capable of efficiently and quickly warming the high speed air flow of a device for blowing out the high speed air flow for a short time with an electric heater having a relatively small capacity. There is.

[0009]

In order to achieve the above object, the present invention provides a high pressure air flow generated by a high pressure air flow generating device incorporated in a main body having a hand insertion portion capable of accommodating a hand. For a hand dryer that blows out as a high-speed air stream at the insertion part and blows off the water droplets attached to the hand inserted in this hand insertion part by the kinetic energy of the high-speed air flow, the suction air on the suction side of the high-pressure air flow generator of the main unit A means is provided that is capable of supplying air with a heating device that supplies heat to the and heats it.

In order to achieve the above object, the present invention uses a high-pressure air flow generated by a high-pressure air flow generator incorporated in a main body having a hand insertion portion capable of accommodating a hand as a high-speed air flow in the hand insertion portion. About the hand dryer that blows out and blows off the water droplets attached to the hand put in this hand insertion part by the kinetic energy of the high-speed air flow, the electric heater and the heat quantity of this electric heater on the suction side of the high pressure air flow generator of the main body A means is provided that is capable of supplying air with a heating device that stores heat and radiates heat to the air.

In order to achieve the above object, the present invention uses a high pressure air flow generated by a high pressure air flow generator incorporated in a main body having a hand insertion part capable of accommodating a hand as a high speed air flow in the hand insertion part. Regarding the hand dryer that blows out and blows off the water droplets attached to the hand put in this hand insertion part by the kinetic energy of the high-speed air flow, to the suction side of the high pressure air flow generator of the main unit, to the high pressure air flow generator side Means having an air chamber for buffering heat transfer, and capable of supplying air with an electric heater in the air passage on the inlet side leading to the air chamber and a heating device for storing the amount of heat of the electric heater and radiating the heat to the air in the air passage To adopt.

In order to achieve the above object, the present invention uses a high-pressure air flow generated by a high-pressure air flow generator incorporated in a main body having a hand insertion part capable of accommodating a hand as a high-speed air flow in the hand insertion part. Regarding the hand dryer that blows out and blows off the water droplets attached to the hand put in this hand insertion part by the kinetic energy of the high-speed air flow, to the suction side of the high pressure air flow generator of the main unit, to the high pressure air flow generator side It has an air chamber that buffers heat transfer, and an air heater on the inlet side leading to this air chamber is equipped with an electric heater and a heating device that stores heat of the electric heater and releases heat to the air in the air passage, A means for providing an opening / closing shutter for opening / closing the vent hole communicating with the high pressure air flow generator side of the air chamber of the heating device is adopted.

[0013] The invention to achieve the above object, the upper
The means for forming the air chamber in multiple stages is adopted.

[0014] The invention to achieve the above object, the upper
The opening / closing shutter is opened by the pressure of the wind generated by the high-pressure airflow generator for blowing air.

[0015] The invention to achieve the above object, the upper
The heating device employs a means provided with a heat storage and radiation fin made of an aluminum material that is in close contact with the electric heater.

[0016] The invention to achieve the above object, the upper
The electric heater of serial heating device, during the operation of the high pressure air flow generation device adopts a method to ensure that deenergized and stopped.

[0017] The invention to achieve the above object, the upper
The means for detecting the operation of the high-pressure airflow generator by the change in the current of the power feeding system to the high-pressure airflow generator is adopted.

[0018] The invention to achieve the above object, the upper
The energization of the electric heater of the serial heating device, the ambient temperature of the temperature and the device for the electric heater, employing a means for controlling a substantially constant irrespective hot air temperature to ambient temperature.

[0019] The invention to achieve the above object, the upper
The heating device is detachably attached to the bottom of the main body.

In order to achieve the above object, the present invention provides an air chamber for buffering heat transfer on the outlet side of an air passage,
On the inlet side of the air passage leading to this air chamber, an electric heater and heat storage heat radiating means for storing the amount of heat of this electric heater and radiating it to the air in the air passage are provided, and an opening and closing means for opening and closing the outlet is provided at the outlet of the air passage. Adopt means to be provided.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. The hand dryer of this embodiment shown in FIGS. 1 to 11 evaluates a drying method of blowing out moisture by utilizing the kinetic energy of high-speed wind, and the high-speed wind by this drying method is a warm air without a feeling of cold air. It was devised to be. This hand dryer is composed of a dryer body 1 and a heating device 2 as shown in FIG.

The drying device main body 1 is disclosed in Japanese Patent Laid-Open No. 7-11607.
The structure is similar to that shown in Japanese Patent Laid-Open No. That is, the high-pressure airflow generator 5 is incorporated in the box body 4 forming the outer shell having the handinsertion portion 3 in the upper front part, and the high-pressure airflow generated by the high-pressure airflow generator 5 is supplied to the manual insertion portion 3. The air is supplied to form a high-speed air flow as a working air flow for drying, which is sufficient to blow off moisture in the hand insertion portion 3, and is installed on the floor or wall surface of a hand washing room or the like.

The front face of the box body 4 forming the outer shell of the hand dryer is composed of a front panel and an insertion part panel forming the hand insertion part 3, and the back face thereof is composed of a back plate. Both side surfaces of the box body 4 are composed of left and right side plates, an upper surface thereof is an upper panel, and a bottom portion thereof is composed of a gate-shaped frame. The hand insertion portion 3 formed by the insertion portion panel is formed as an oblique U-shaped concave portion, which is open on the front side and both side surfaces, and inclines downward toward the rear side, in the upper front portion of the box body 4, and both hands You don't feel discomfort or anxiety when you present it naturally.
It has a frontage and a height and depth that allow hands to be freely inserted and removed in a visible state, and a drainage port is formed at the bottom on the back side.

The high-pressure airflow generator 5 includes a DC brushless motor (which may be a normal commutator motor),
It is configured as a unit composed of a turbo fan that is rotated by a DC brushless motor, and is attached to the upper surface of the frame forming the bottom of the box body 4 with its suction port facing downward. The suction port of the high-pressure airflow generator 5 is open to the suction path formed in the frame.
The lower end of the suction path is opened downward at the bottom of the box body 4 to form a main body suction port 6.

Each D on the exhaust side of the high-pressure airflow generator 5
One end of each of the upper and lower air ducts is connected to the C brushless motor side, and an upper blowing nozzle 7 and a lower blowing nozzle 8 are attached to the other ends of the upper and lower air ducts, respectively. A plurality of nozzle holes are formed in a row in the lateral direction in the upper blowing nozzle 7 and the lower blowing nozzle 8 so that the high-pressure air sent from the high-pressure air flow generating device 5 can be fed from 50 m / s to 1 m / s.
It can be converted into wind with a wind speed of 50 m / s and blown out.

The upper blowing nozzle 7 is inclined downward so as to form an upper portion of the inlet of the manual insertion portion 3, and the lower blowing nozzle 8 is inclined downward so as to form a pressure gradient from the inlet to the lower portion of the inlet of the manual insertion portion 3. Is installed laterally with the hand insertion part 3
High-speed wind can be applied to both the back and palm sides of the hand at the same time so that water droplets on the hand can be removed from the front and back of the hand without rubbing the hands placed in.

In addition to the high-pressure airflow generator 5 and the intake box, a circuit box and a drain tank are removably mounted in a rack shape on the frame forming the bottom of the box body 4. The drain tank is connected to the drain hose formed at the deepest part of the manual insertion part 3 so that the other end of the drain hose whose one end is connected to the back side can conduct water, and stores the water flowing down from the manual insertion part 3. Can be kept.

As shown in FIGS. 3, 4 and 5, the heating device 2 has a structure in which a heat storage radiator 10 is incorporated in a box-shaped front open frame 9 for mounting and supporting the drying device body 1 described above. A protective net 11 is stretched on the front surface, and support legs 12 that support the bottom of the drying device body 1 are provided on the left and right of the upper surface. Between the support legs 12 on the upper surface of the frame 9, an air supply port 13 communicating with the main body suction port 6 opened at the bottom of the drying device main body 1 is opened. A seal frame 14 is provided around the air supply port, and the air supply port 13 is connected to the main body suction port 6 of the drying device main body 1 mounted and supported by the support legs 12 without air leakage. The front surface of the frame 9 is covered with a front panel 16 having an intake port 15, and the rear surface of the front panel 16 is covered with an air filter 1
7 is detachably attached by an attachment spring 18.

The heat storage radiator 10 is a rectangular tube-shaped heater box 19 and a sheathed heater 20 that define a vertical air passage connecting the intake port 15 and the air supply port 13 in the frame 9.
And chamber structures 21 and 22 as main components. The heat storage / radiation fins 23 made of a plurality of aluminum materials are integrated with the sheath heater 20 by die casting, and the heat storage / radiation fins 23 are laterally mounted on a frame-shaped base 24 that is floated and supported on the bottom plate of the frame 9. They are fixed by fixing legs 25 in such a manner that they are lined up at intervals in the direction, and are entirely housed in the heater box 19. An electronic circuit 27 is mounted on one end side of the base 24, separated from the heater side by two heat shield plates 26. This electronic circuit 2
In 7, a heater control circuit as shown in FIG. 6 is configured.

The heater control circuit has a current detection circuit 28 for detecting the current of the power feeding system on the drying apparatus main body 1 side, and the high-pressure airflow generator 5 operates by detecting a change in the current by the current detection circuit 28. Heater drive circuit 29 when in the state
Thus, the energization of the sheath heater 20 is stopped, and the energization of the sheath heater 20 is controlled when the high-pressure airflow generator 5 is stopped. Further, the heater control circuit is provided with a room temperature detection circuit 30 for detecting the room temperature (ambient temperature of the apparatus) at the installation location and a heater temperature detection circuit 31 for detecting the heater temperature. The energization of the sheath heater 20 is controlled so that the temperature of the warm air becomes substantially constant. The heater temperature detection circuit 31 includes a thermistor 32 and a resistor 3 as shown in FIG.
3, 34, and the room temperature detection circuit 30 is composed of a thermistor 35 and a resistor 36. Each of these outputs is input to the comparison circuit 37, and the output of the comparison circuit 37 energizes the sheath heater 20. Controlled.

The chamber structures 21 and 22 are shown in FIGS.
As shown in FIG. 4, the bottom surface is formed into a frame-shaped container having rises 38 on both sides, and the heat storage radiator 10 in the heater box 19 is stacked with the rises 38 upward so as to form a double-tiered box. Each of the chamber structures 21 and 22 forms a two-stage air chamber 39 for buffering heat transfer between the heat storage radiator 10 and the air supply port 13. The air passage formed by the heater box 19 and the air supply port 13 are the chamber structure 21,
22 is connected to each other through a rectangular ventilation port 40 provided on the bottom surface of the heating device 2 and the intake port 15 of the heating device 2 and the drying device main body 1
The main body suction port 6 is communicated with a series of ventilation paths formed in the heating device 2. Each chamber structure 21, 22
Opening and closing shutters 41 and 42 made of a heat insulating material for opening and closing the ventilation port 40 are attached to the ventilation port 40.

The open / close shutters 41, 42 are hinged on the bottom side on the bottom side, and are normally attached to the close side by biasing means such as a leaf spring 43 and a torsion spring 44 as shown in FIGS. The vents 40 are normally biased to close each vent 40. The urging force of the urging means that closes the open / close shutters 41, 42 is set to be weaker than the pressure of the wind created by the high-pressure airflow generator 5 for blowing air, and the high-pressure airflow generator 5 operates. To open and to stop to close.

In the hand dryer having the above-mentioned structure, the wet hand is put into and pulled out from the hand insertion portion 3 to draw water from the hand by the high-speed warm air formed in the hand insertion portion 3 to the back of the hand insertion portion 3. It can be blown away to the side, and can be dried quickly without feeling cold air in a state where the hands are visible without anxiety. That is, when a wet hand is inserted into the hand insertion portion 3, a hand detection signal is formed by the sensor, the DC brushless motor of the high-pressure airflow generator 5 is started by the control circuit, and the turbo fan is rotated. By the rotation of the turbo fan, warm air supplied from the heating device 2 from the bottom side of the box body 4 is sucked into the high-pressure air flow generation device 5 through the suction path, and a high-pressure air flow due to the warm air is formed. This high-pressure air flow is sent from the exhaust side of the high-pressure air flow generation device 5 into the upper and lower air ducts, and the high- and low-speed air nozzles 7 and 8 of the hand insertion portion 3 are simultaneously inclined at a predetermined inclination to both the back side of the hand and the palm side. Is blown out as warm air. The water droplets on the hand are blown away by the high-speed warm air to the front, that is, on the back side of the hand insertion portion 3 at once, and the treated air is discharged to the outside from both sides of the hand insertion portion 3.

The water droplets blown off are pushed to the end of the bottom portion on the back side of the hand insertion portion 3 by both the self-weight and the force of the wind, flow down from the drain port formed in this portion to the drain hose, and the hand insertion portion 3 It is drained smoothly from the inside. The water flowing down the drain hose is received in the drain tank. In this way, the wet hand is dried in about 5 to 10 seconds. After that, when the hand inserted into the hand insertion portion 3 is removed from the hand insertion portion 3, the absence of the hand is detected, the high-pressure airflow generator 5 is stopped after a certain period of operation, and quick and hygienic warm air is generated. The hand drying process is complete. That is, according to this hand dryer,
It is possible to perform a hygienic and comfortable hand drying process with warm air easily and quickly without the troublesomeness, trouble, discomfort or anxiety, and the feeling of cold wind. The amount of heat of the warm air blown out by the hand insertion portion 3 is supplied by the heating device 2, but is not related to the drying process of the hand and is the amount of heat for eliminating the feeling of cold air during use. It is enough that it does not give a cold sensation.

Here, the operation of the heating device 2 which performs a characteristic function of supplying a large amount of heat to a large amount of air and warming it in a short time of about 5 to 10 seconds will be described. Heating device 2
Is located in the lower part of the dryer main body 1 in terms of configuration and is connected to the suction side of the high-pressure airflow generator 5. For this reason, the heat source portion is separated from the hand insertion portion 3, and the safety for the hand itself and the user is improved. However, the drying device body 1 is likely to be adversely affected by the heat of the heating device 2. This problem is solved by the air chamber 39 that buffers heat transfer. In particular, the heating device 2 of this embodiment is provided with a two-stage air chamber 39, and the air passages of the main body suction port 6 of the drying device main body 1 and the heat storage radiator 10 are arranged via the two-stage air chamber 39. Contacted each air chamber 3
Numeral 9 is closed by the opening / closing shutters 41 and 42 made of a heat insulating material while the high-pressure airflow generator 5 is stopped, and the flow of the internal air is regulated, so that the heat transfer to the dryer main body 1 side is effective. Is buffered.

When the open / close shutters 41, 42 are closed, the sheath heater 20 is energized so that the heat of the sheath heater 20 closely adheres to the sheath heater 20 without a gap and is made of aluminum, which is a heat storage material having a large specific heat. The heat is efficiently stored in the radiation fins 23, and the air in the air passage is warmed to a predetermined temperature and stored in the air passage and each air chamber 39. The heating device 2 standing by in this state stops the energization of the sheath heater 20 with the operation of the drying device main body 1 and radiates the warm air stored in the drying device main body 1 and the stored heat quantity to the air flowing in to warm the warm air. Figure 5 shows the converted air
Supply as shown in. That is, when the high-pressure airflow generator 5 operates, an intake action occurs in the intake path, and the air supply port 13 communicating with the main body intake port 6 and the upper air chamber 3
Negative pressure is applied up to the opening / closing shutter 41 of 9 and the opening / closing shutter 41 is opened against the bias of the biasing means by the action of the back pressure, and the opening / closing shutter 42 of the lower air chamber 39 is also opened. Move.

As a result, the ventilation system between the main body of the drying device 1 and the heating device 2 communicates with each other, and the high-pressure air flow generator 5 draws in the warm air from the heating device 2 to generate the high-pressure air flow by the warm air, and blows it up and down. A high-speed air stream of warm air is blown from the nozzles 7 and 8 to the hand insertion portion 3. From the beginning to the end of the drying processing time, the heat storage function of the heating device 2 blows out a high-speed air stream of warm air. When the drying process is completed and the high-pressure airflow generator 5 is stopped, each opening / closing shutter 41, 42 is closed by the urging force of the urging means and its own weight, and the energization of the sheath heater 20 of the heating device 2 is started. Return to the standby state described in.

The temperature of the warm air used to dry the hands is cold in the winter when it is adjusted to the summer and too hot in the summer when it is adjusted to the winter, so that the room temperature detection circuit 30 and the heater temperature detection circuit 31 are used. Is controlled so that it becomes almost constant regardless of room temperature (ambient temperature). That is, when the room temperature rises, the resistance value of the thermistor 35 falls, and the voltage across the resistor 36, which is the output to the comparison circuit 37, rises. The comparison circuit 37 outputs the heater ON signal only when the output voltage of the heater temperature detection circuit 31 is higher than the voltage across the both ends. That is, when the room temperature is high, the sheath heater 20 is turned on when the heater temperature is low. On the other hand, when the room temperature decreases, the resistance value of the thermistor 35 increases,
The voltage across the resistor 36, which is the output to the comparison circuit 37, drops. The comparison circuit 37 outputs a heater ON signal when the output voltage of the heater temperature detection circuit 31 is higher than the voltage across the both ends. Therefore, when the room temperature is low, the sheath heater 20 is turned on even if the heater temperature is high, and the room temperature and the heater temperature move in an inversely proportional relationship, whereby the warm air temperature is controlled to be substantially constant and the usability is improved. To do.

Although ceramics, bricks, stones, or liquids can be applied to the material of the heat storage / radiation fins 23, the temperature of the sheathed heater 20 must be raised more than necessary unless it can be adhered to the sheathed heater 20. Since it is difficult to obtain such characteristics as described above, it is possible to perform contact molding by die casting, aluminum having a large specific heat is suitable, and it is also effective for downsizing the heating device 2. The opening / closing shutters 41 and 42 can be easily opened / closed by an actuator such as a motor, but when used in public facilities, the frequency of opening / closing increases, and troubles such as wear of the opening / closing mechanism and intrusion of dust occur. It is easier and more convenient to open and close by using elastic force of a spring or the like, because not only durability and reliability are improved, but also a simple structure can be easily interlocked with the operation of the drying device main body 1 side, which is convenient. .

Further, the drying device main body 1 and the heating device 2 may be formed integrally or separately, but the heating device 2
Since the drying device main body 1 and the drying device main body 1 can be configured as a device that is functionally completed as described above, a configuration in which the heating device 2 is configured in a stand type and the drying device main body 1 is assembled to the heating device 2 is The heating device 2 can be attached to the existing hand dryer, and the applicability of the heating device 2 is increased. In this embodiment, the operation of the drying apparatus main body 1 is detected by the change in the current, and the energization of the sheath heater 20 is stopped when the drying apparatus main body 1 is in operation. It is easy to retrofit the heating device 2 and it is possible to prevent the heating device 2 from increasing the current capacity, and the heating device 2 can be operated only by the power supply of the drying device main body 1. It becomes unnecessary and easy to install. The heating device 2 thus configured independently of the heating device 2 is a heat storage type air heating device itself, and serves as a heat storage heat dissipation device for intermittently turning a large amount of air into hot air for a short time. The device can be used in fields other than hand dryers.

[0041]

As is apparent from the description of the embodiment, according to the present invention, the drying process in the hand dryer for drying the hands by the kinetic energy of the wind can be performed with warm air. The feeling of cold wind at the time is eliminated, and the heated portion can be separated from the place of use.

According to the present invention, the warming of the wind in the hand dryer for drying the hand by the kinetic energy of the wind,
With an electric heater having a relatively small capacity, the heating can be performed efficiently and promptly, the feeling of cool air during the drying process can be eliminated, and the heated portion can be separated from the place of use.

According to the present invention, the warming of the wind in the hand dryer for drying the hand by the kinetic energy of the wind,
With an electric heater with a relatively small capacity, it can be done efficiently and promptly, the feeling of cold air during the drying process can be eliminated, and the adverse effect of heat on the main body side can be prevented,
Moreover, the heated portion can be separated from the place of use.

According to the present invention, the warming of the wind in the hand dryer for drying the hand by the kinetic energy of the wind,
With an electric heater with a relatively small capacity, it can be done efficiently and promptly, the feeling of cold air during the drying process can be eliminated, and the adverse effect of heat on the main body side can be prevented,
Moreover, the heated portion can be separated from the place of use.

According to the present invention, heat transfer to the main body side can be further restricted.

According to the present invention, the operating mechanism of the open / close shutter is simplified and the reliability is improved.

According to the present invention, the heating device is downsized and the performance is improved.

According to the present invention, the installability is improved.

According to the present invention, the heating device can be easily attached to the main body by retrofitting.

According to the present invention, the warm air temperature is substantially constant regardless of the ambient temperature, and the usability is improved.

According to the present invention, installation and handling are easy.

According to the present invention, it is possible to obtain a regenerative air heating device capable of efficiently and quickly warming the high-speed air flow of the device for blowing out the high-speed air flow for a short time with an electric heater having a relatively small capacity.

[Brief description of drawings]

FIG. 1 is a side view showing a hand dryer according to an embodiment.

FIG. 2 is a front view showing the hand dryer according to the embodiment.

3 is an exploded perspective view showing the heating device of FIG. 1. FIG.

FIG. 4 is an exploded perspective view showing the heating device of FIG. 1.

5 is an enlarged cross-sectional view of the heating device of FIG.

6 is a configuration diagram of a heater control circuit of the heating device of FIG.

7 is a circuit configuration diagram of a room temperature detection circuit and a heater temperature detection circuit of the heating device of FIG.

8 is a partially enlarged perspective view showing the structure of the upper part of the heating device of FIG.

9 is an enlarged perspective view showing a chamber structure of the heating apparatus of FIG.

FIG. 10 is an enlarged perspective view showing another configuration of the chamber structure of the heating device.

FIG. 11 is an enlarged perspective view showing another configuration of the chamber structure of the heating device.

FIG. 12 is a cross-sectional view showing the configuration of a conventional hand dryer.

[Explanation of symbols]

1 drying device main body, 2 heating device, 3 hand insertion part,
5 High-pressure airflow generator, 6 Main body suction port, 7
Top blow nozzle, 8 Bottom blow nozzle, 10 Heat storage radiator, 13 Air inlet, 15 Air inlet, 20 Sheath heater, 23 Heat radiation fin, 28 Current detection circuit, 30 Room temperature detection circuit, 31 Heater temperature detection circuit, 37 Comparison Circuit, 39 air chamber, 41 open / close shutter, 42 open / close shutter, 43 leaf spring.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-116076 (JP, A) JP-A-62-68430 (JP, A) JP-A-7-136079 (JP, A) JP-A-3- 140103 (JP, A) JP 8-117146 (JP, A) JP 2-23918 (JP, A) JP 3-27695 (JP, A) JP 61-109532 (JP, A) Actually open 6-38784 (JP, U) Actually open 60-29593 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47K 10/48

Claims (16)

(57) [Claims] 1. A high-pressure air flow generated by a high-pressure air flow generator incorporated in a main body having a hand insertion part capable of accommodating a hand is ejected as a high-speed air flow in the hand insertion part, and the high-speed air flow is injected into the hand insertion part. A hand dryer that blows off water droplets adhering to an inserted hand by the kinetic energy of the high-speed airflow, and supplies heat to the suction side of the high-pressure airflow generator of the main body to raise the temperature of this. A hand dryer, wherein a heating device is detachably attached to a lower portion of the main body . 2. A high-pressure air flow generated by a high-pressure air flow generator incorporated in a main body having a hand insertion portion capable of accommodating a hand is ejected as a high-speed air flow in the hand insertion portion, and is injected into the hand insertion portion. A hand dryer that blows off water droplets adhering to an inserted hand by the kinetic energy of the high-speed air flow, and transfers heat to the high-pressure air flow generator side to the suction side of the high-pressure air flow generator of the main body. It has an air chamber for buffering, and an air heater on the inlet side leading to this air chamber is equipped with an electric heater and a heating device that stores heat of the electric heater and releases heat to the air in the air passage. Characteristic hand dryer. 3. A high-pressure air flow generated by a high-pressure air flow generator incorporated in a main body having a hand insertion part capable of accommodating a hand is ejected as a high-speed air flow in the hand insertion part, and the high-pressure air flow is ejected to the hand insertion part. A hand dryer that blows off water droplets adhering to an inserted hand by the kinetic energy of the high-speed air flow, and transfers heat to the high-pressure air flow generator side to the suction side of the high-pressure air flow generator of the main body. It has an air chamber for buffering, and an air heater on the inlet side leading to this air chamber is equipped with an electric heater and a heating device that stores heat of the electric heater and radiates it to the air in the air passage. A hand dryer, wherein an opening / closing shutter for opening / closing the vent is provided at the vent communicating with the high-pressure airflow generator side of the air chamber of the apparatus. 4. The hand dryer according to claim 3 ,
A hand dryer with a multi-stage air chamber. 5. The hand dryer according to claim 3 or 4 , wherein the opening / closing shutter is configured to be opened by a pressure of wind generated by the high-pressure airflow generator for blowing air. A hand dryer characterized in that 6. The hand dryer according to any one of claims 2 to 5 , wherein the heating device is provided with a heat storage radiating fin made of an aluminum material in close contact with an electric heater. And hand dryer. 7. The hand dryer according to any one of claims 2 to 6 , wherein energization of an electric heater of the heating device is stopped during operation of the high-pressure airflow generator. Hand dryer characterized by. 8. The hand dryer according to claim 7 ,
A hand dryer characterized in that the operation of the high-pressure airflow generator is detected by a change in current of a power supply system to the high-pressure airflow generator. 9. A hand dryer according to any one of up to claims 2 8, the energization of the electric heater of the heating device, the ambient temperature of the temperature and the device for the electric heater, ambient temperature A hand dryer characterized in that the temperature of warm air is controlled to be substantially constant regardless of the above. 10. The hand dryer according to any one of claims 2 to 9 , wherein a heating device is detachably provided on a lower portion of the main body. 11. An air chamber for cushioning heat transfer is provided on the outlet side of the air passage, and an electric heater and the amount of heat of the electric heater are stored on the inlet side of the air passage leading to the air chamber and the air passage of the air passage is formed. A heat storage type air heating device, characterized in that heat storage heat dissipation means for dissipating heat to air is provided, and opening / closing means for opening / closing the outlet is provided at the outlet of the air passage. 12. A main body having a hand insertion portion capable of accommodating a hand.
Pressure generated by a high-pressure airflow generator built into the
Airflow is ejected as high-speed airflow in the above-mentioned manual insertion section
And, the water droplets adhering to the hand placed in the hand insertion portion of this
Hand dryer that blows away by kinetic energy of high-speed air flow
The suction side of the high-pressure airflow generator of the main body
To store the heat of the electric heater and this electric heater
Also equipped with a heating device that radiates heat to the air so that it can be supplied.
The heating device is made of aluminum material in close contact with the electric heater.
Hands characterized by having a heat storage and radiation fin
Drying device. 13. A main body having a hand insertion portion capable of accommodating a hand.
Pressure generated by a high-pressure airflow generator built into the
Airflow is ejected as high-speed airflow in the above-mentioned manual insertion section
The water drops on the hand inserted in this hand insertion part
Hand dryer that blows away by kinetic energy of high-speed air flow
The suction side of the high-pressure airflow generator of the main body
To store the heat of the electric heater and this electric heater
Also equipped with a heating device that radiates heat to the air so that it can be supplied.
Note: While the high-pressure airflow generator is operating, the electric heater
It is characterized in that the power supply to the motor is stopped.
Hand dryer. 14. A main body having a hand insertion portion capable of accommodating a hand.
Pressure generated by a high-pressure airflow generator built into the
Airflow is ejected as high-speed airflow in the above-mentioned manual insertion section
The water drops on the hand inserted in this hand insertion part
Hand dryer that blows away by kinetic energy of high-speed air flow
The suction side of the high-pressure airflow generator of the main body
To store the heat of the electric heater and this electric heater
Also equipped with a heating device that radiates heat to the air so that it can be supplied.
Operation of the high pressure air flow generator
The fact that it detects by the change of the electric current of the power feeding system
Characteristic hand dryer. 15. A main body having a hand insertion part capable of accommodating a hand.
Pressure generated by a high-pressure airflow generator built into the
Airflow is ejected as high-speed airflow in the above-mentioned manual insertion section
The water drops on the hand inserted in this hand insertion part
Hand dryer that blows away by kinetic energy of high-speed air flow
The suction side of the high-pressure airflow generator of the main body
To store the heat of the electric heater and this electric heater
Also equipped with a heating device that radiates heat to the air so that it can be supplied.
Turn on the electricity to the electric heater of the heating device.
Depending on the temperature and the ambient temperature of the device, hot air is blown regardless of the ambient temperature.
It is characterized in that the temperature is controlled to be almost constant.
Hand dryer. 16. A main body having a hand insertion portion capable of accommodating a hand.
Pressure generated by a high-pressure airflow generator built into the
Airflow is ejected as high-speed airflow in the above-mentioned manual insertion section
The water drops on the hand inserted in this hand insertion part
Hand dryer that blows away by kinetic energy of high-speed air flow
The suction side of the high-pressure airflow generator of the main body
To store the heat of the electric heater and this electric heater
Also equipped with a heating device that radiates heat to the air so that it can be supplied.
The heating device is detachably attached to the bottom of the main unit.
And hand dryer.