JP2011147520A - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand dryer in which the growth of mold and bacteria therein is prevented with a simple structure, thereby reducing cost. <P>SOLUTION: The hand dryer includes: a hand insertion part 10 recessed in a housing 5, for hands to be inserted therein; a high-pressure airflow generator 2 for generating a high-pressure airflow; an air duct 4 where the high-pressure airflow generated by the high-pressure airflow generator 2 flows, and which has the openings of air jetting ports 6a, 6b exposed to the hand insertion part 10; a drain tank 8 communicating with the hand insertion part 10 via a drain outlet 23a which opens at the bottom of the hand insertion part 10, for collecting water drops scattered from hands by the high-pressure airflow jetted from the air jetting ports 6a, 6b; and an ion generator 22 for discharging ions into the drain tank 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hand dryer for drying wet hands after washing.

  A conventional hand drying apparatus is disclosed in Patent Document 1. In this hand dryer, a hand insertion portion for inserting a user's hand is recessed in the upper part of the housing. At the upper part of the manual insertion part, there is provided a spout for ejecting a high-pressure air flow from the front and rear by a blower fan, and a drain outlet is opened at the bottom. A drainage tank that communicates with the manual insertion portion via a drainage port is provided at the lower part of the housing.

  When the wet hand after washing is inserted into the manual insertion portion, the blower fan is driven, and a high-pressure air current is ejected from the ejection port. Water droplets adhering to the hand are blown off by the high-pressure airflow and collected in the drainage tank through the drainage port. Thereby, a user's hand can be dried.

  Water droplets blown from the hand contain organic substances such as fat. For this reason, according to said hand drying apparatus, the mold | fungi and bacteria which decompose organic substance propagate in the manual insertion part and drainage tank to which a water droplet adheres, and it becomes unsanitary. For this reason, there is a problem of polluting hands after washing and a problem of spreading germs and odors around.

  In order to solve the above problem, Patent Document 2 discloses a hand drying device for cleaning the hand insertion portion. This hand dryer is provided with a cleaning liquid supply means and a disinfecting liquid supply means for supplying a cleaning liquid and a disinfecting liquid to the hand insertion part, respectively. When the blower fan is driven, water droplets adhering to the user's hand are blown away. When the hand is withdrawn from the hand insertion portion and inserted again, a disinfectant such as alcohol is supplied to the hand insertion portion. Thereby, a user's hand is disinfected.

  When disinfection is completed and the hand is withdrawn from the manual insertion portion, the cleaning liquid is supplied to the manual insertion portion, and the cleaning liquid flows down the wall surface of the manual insertion portion. Thereby, the wall surface of a manual insertion part is wash | cleaned, and propagation of mold and various germs can be prevented.

  Patent Document 3 discloses a hand dryer provided with an ozone generator for releasing ozone in a hand insertion portion. In this hand drying device, when the hand with the water droplets blown away is retracted from the hand insertion portion, the blower fan is stopped and ozone is released to the hand insertion portion. Thereby, ozone is filled in the hand insertion portion, and the growth of mold and various germs can be prevented.

Japanese Patent Laid-Open No. 2002-34844 (2nd page to 5th page, FIG. 2) Japanese Patent No. 3630013 (Page 2-8, Figure 2) No. 3141394 (page 3 to page 13, FIG. 2)

  However, according to the hand drying device disclosed in Patent Document 2, it is necessary to provide a tank, a pump, a duct and the like separately from the air flow path in order to configure the cleaning liquid supply means. For this reason, there has been a problem that the structure becomes complicated and the cost of the hand dryer increases.

  Moreover, according to the hand dryer disclosed in the above-mentioned Patent Document 3, there is a problem that causes discomfort to the user due to the odor of ozone. In addition, the resin parts used in the hand dryer deteriorate due to oxidation by ozone, and cracks and the like occur. For this reason, it is necessary to use ozone-resistant resin for the hand insertion part and the air duct, and there is a problem that the cost of the hand dryer increases.

  An object of the present invention is to provide a hand-drying device that can prevent mold and germs with a simple configuration and can reduce costs.

  In order to achieve the above object, the present invention provides a hand insertion portion that is recessed in a housing and into which a hand is inserted, a high pressure airflow generation portion that generates a high pressure airflow, and a high pressure airflow generated by the high pressure airflow generation portion. The air ducts that circulate and open the spout facing the hand insertion portion and the high pressure air current that is communicated with the hand insertion portion and discharged from the spout through a drain opening that opens at the bottom of the hand insertion portion. A drainage tank that collects water droplets blown away from the water and an ion generator that discharges ions into the drainage tank.

  According to this configuration, when the user's wet hand after washing is inserted into the hand insertion portion, the high-pressure airflow generated by the high-pressure airflow generation portion flows through the air duct and is ejected from the ejection port. Water droplets adhering to the hand are blown off by the air flow ejected from the ejection port and collected in the drainage tank via the drainage port. Ions are released from the ion generator into the drainage tank, and the generation of mold and bacteria is prevented by the ions. Further, ions are diffused from the drainage tank to the manual insertion portion through the drainage port, and generation of mold and germs on the wall surface of the manual insertion portion is prevented.

  Further, the present invention is characterized in that, in the hand dryer having the above-described configuration, a plurality of plate-like members inclined with respect to the horizontal are arranged at the drain outlet at predetermined intervals. According to this configuration, the drain port has a plurality of inclined plate-like members arranged in parallel, so that the opening area when viewed in plan is small. As a result, the plate-like member suppresses inflow of the high-pressure air current ejected into the manual insertion section into the drainage tank, and the high-pressure airflow causes ions to flow out of the manual insertion section and to be scattered into the manual insertion section of the drainage tank. Is reduced. Further, the cross-sectional area of the passage formed between the plate-like members is ensured widely, and ions released to the drainage tank when the high-pressure air flow is stopped are diffused to the manual insertion portion through the passage.

  Further, the present invention is the hand-drying device having the above-described configuration, wherein the plate-like member disposed at the front portion of the hand insertion portion is inclined so that the rear is lowered, and the plate-like member disposed at the rear portion of the hand insertion portion. The member is characterized by inclining so that the rear side is raised. According to this configuration, the high-pressure air current ejected to the hand insertion portion collides with the hand, and has a velocity component directed downward and a velocity component directed to the inner wall facing the hand of the manual insertion portion. Since the plate-like member disposed at the front portion of the hand insertion portion is inclined so that the rear side is lowered, the crossing angle between the plate-like member and the airflow that collides with the front surface of the hand and descends becomes close to a right angle. Further, since the plate-like member disposed at the rear portion of the hand insertion portion is inclined so as to be raised rearward, the crossing angle between the plate-like member and the airflow that collides with the back of the hand and descends becomes close to a right angle. Thereby, the inflow of the high-pressure airflow into the drainage tank is further suppressed.

  The present invention further includes a hand detection sensor that detects a hand inserted into the hand insertion unit in the hand drying device having the above-described configuration, and when the hand is inserted into the hand insertion unit, The ion generating device is driven, and when the hand is retracted from the hand insertion portion, the high pressure air flow generating portion is stopped and the ion generating device is driven for a predetermined time and then stopped.

  According to this configuration, when a hand is inserted into the hand insertion unit, the high-pressure airflow generation unit and the ion generation device are driven by the detection of the hand detection sensor. When the hand is withdrawn from the hand insertion part, the high pressure air flow generation part is stopped by the detection of the hand detection sensor and the driving of the ion generator is continued.

  The present invention further includes a hand detection sensor that detects a hand inserted into the hand insertion unit in the hand drying device having the above-described configuration, and when the hand is inserted into the hand insertion unit, While driving an ion generator, when the hand retracted from the hand insertion part, the high pressure air flow generation part was stopped, and the ion generator was operated intermittently at a predetermined time interval.

  According to this configuration, when a hand is inserted into the hand insertion unit, the high-pressure airflow generation unit and the ion generation device are driven by the detection of the hand detection sensor. When the hand is withdrawn from the hand insertion part, the high pressure airflow generation part is stopped by the detection of the hand detection sensor, and the ion generator is intermittently operated.

  Further, the present invention is characterized in that, in the hand dryer having the above-described configuration, the ion generator is further provided in the air duct, and ions are discharged into the air duct. According to this structure, the ion generated by the ion generator is released into the drainage tank and the air duct. The air current flowing through the air duct contains ions and is ejected from the ejection port. Water droplets adhering to the user's hand are blown away by the high-pressure air current ejected from the ejection port, and the surface of the hand is sterilized by ions.

According to the present invention, in the hand-drying apparatus having the above-described configuration, positive ions composed of H ⁺ (H ₂ O) m (m is an arbitrary natural number) and O ₂ ⁻ (H ₂ O) n (n Is characterized by mainly generating negative ions consisting of 0 or any natural number.

  According to the present invention, since the ion generating device for releasing ions is provided in the drainage tank, mold and germs in the drainage tank can be prevented with a simple configuration, and molds in the manual insertion portion are diffused by the ions diffusing through the drainage port. And other germs can be prevented. Moreover, a ventilation duct and a manual insertion part can be formed using the resin components which do not require ozone resistance. Therefore, a low-cost and hygienic hand dryer can be realized.

Side surface sectional drawing which shows the hand-drying apparatus of 1st Embodiment of this invention. The top view which shows the hand-drying apparatus of 1st Embodiment of this invention. The top view which shows the ion generator of the hand dryer of 1st Embodiment of this invention The block diagram which shows the structure of the hand dryer of 1st Embodiment of this invention. Side surface sectional drawing which shows the principal part of the hand dryer of 1st Embodiment of this invention. Side surface sectional view which shows the hand-drying apparatus of 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are a side sectional view and a top view showing the hand drying apparatus of the first embodiment. In FIG. 1, the left side is the front side, and the right side is the back side. The hand dryer 1 includes a housing 5 of a resin molded product that forms an exterior. A hand insertion portion 10 having an upper surface opened is recessed in the upper portion of the housing 5. A wet hand after washing by the user is inserted into the hand insertion portion 10 from above. A hand detection sensor 9 that detects a hand inserted into the hand insertion unit 10 is provided on the wall surface of the hand insertion unit 10.

  An adjacent drainage tank 8 is disposed below the manual insertion portion 10 via a partition plate 23. The drainage tank 8 is detachable from the front surface of the housing 5 by gripping the handle portion 8a. The partition plate 23 opens the drain port 23a, and the manual insertion portion 10 and the drain tank 8 communicate with each other through the drain port 23a. Thereby, the water droplet peeled from the hand inserted in the hand insertion part 10 is collect | recovered by the drainage tank 8 via the drainage port 23a.

  A plurality of plate-like members 24 extending in the left-right direction are juxtaposed in the front-rear direction at the drain port 23a. The front plate-like member 24 is inclined so that the rear is lowered with respect to the horizontal, and the rear plate-like member 24 is inclined so that the rear is raised with respect to the horizontal.

  An ion generator 22 that releases ions to the drain tank 8 is attached to the lower surface of the partition plate 23 outside the drain port 23a. Since the upper surface of the ion generator 22 is covered with the partition plate 23, it is possible to prevent water droplets dripping from the drain port 23 a from adhering to the ion generator 22.

  FIG. 3 shows a plan view of the ion generator 22. The ion generator 22 holds two ion generators 221 and 222 by a holding body 223. Inside the holding body 223, a power feeding unit (not shown) that supplies a voltage to the ion generating units 221 and 222 is provided. By supplying a voltage from the power supply unit to the ion generation units 221 and 222, the ion generation units 221 and 222 generate ions.

  The ion generators 221 and 222 include needle-like discharge electrodes 221a and 222a and induction electrode rings 221b and 222b surrounding the discharge electrodes 221a and 222a. The discharge electrodes 221a and 222a are arranged at the center portions of the induction electrode rings 221b and 222b, respectively. As will be described below, one ion generator 221 is configured to generate positive ions, and the other ion generator 222 is configured to generate negative ions. The polarity of ions generated from the ion generators 221 and 222 may be switched every predetermined time.

One ion generator 221 is applied with a positive voltage, and water molecules in the air are electrically decomposed in the plasma region due to the discharge to mainly generate hydrogen ions H ⁺ . Then, water molecules in the air aggregate around the generated hydrogen ions, and positive cluster ions H ⁺ (H ₂ O) _m are formed. Here, m is an arbitrary natural number.

A negative voltage is applied to the other ion generator 222, and oxygen molecules in the air are electrically decomposed in a plasma region due to discharge, and mainly oxygen ions O ₂ ⁻ are generated. Then, water molecules in the air aggregate around the generated oxygen ions to form negative cluster ions O ₂ ⁻ (H ₂ O) _n . Here, n is 0 or an arbitrary natural number. Hereinafter, the term “positive ion” means a positive cluster ion, and the term “negative ion” means a negative cluster ion. The generation of positive and negative cluster ions can be confirmed by time-of-flight mass spectrometry.

When positive ions and negative ions are simultaneously released into the air, they aggregate on the surface of microorganisms such as fungi and fungi and odor components and surround them. Then, as shown in the formulas (1) to (3), positive ions and negative ions are instantaneously bonded to each other and [.OH] (hydroxyl radical) or H ₂ O ₂ which is an active species having a very high oxidizing power. (Hydrogen peroxide) is generated on the surface of microorganisms or the like. This chemical reaction decomposes proteins and odorous components on the surface of microorganisms and suppresses their functions. Here, m ′ is an arbitrary natural number, and n ′ is 0 or an arbitrary natural number.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  Therefore, by generating positive ions and negative ions and releasing them to the drainage tank 8, it is possible to prevent germs and molds in the drainage tank 8 and to eliminate bacteria and to remove odors. The number and arrangement of the ion generators 22 that discharge ions to the drainage tank 8 can be appropriately selected and changed according to the required ion concentration. For example, two or more ion generators 22 may be provided.

  1 and 2, the blower fan 2 that rotates the impeller 2b by the motor 2a is disposed in the lower part of the housing 5. The blower fan 2 is installed in a blower duct 4 having an intake port 11 opened on the bottom surface of the housing 5. In addition, a heater 21 is disposed in the blower duct 4 on the exhaust side of the blower fan 4.

  The blower duct 4 has a horizontal part 4a that extends horizontally on the exhaust side of the blower fan 2, and branches from the horizontal part 4a to the front face part 4b and the back face part 4c. The front surface portion 4b is arranged vertically along the front surface of the manual insertion portion 10 from the front end of the horizontal portion 4a. The back surface portion 4c is arranged vertically along the back surface of the manual insertion portion 10 from the rear end of the horizontal portion 4a.

  Spouts 6a and 6b facing the hand insertion part 10 are provided on the upper part of the front part 4b and the back part 4c, respectively. The jet nozzles 6a and 6b are formed in a nozzle shape that is elongated in a line shape in the left-right direction and opens. As a result, air can be blown over the entire width of both hands inserted side by side in the hand insertion portion 10. You may form the jet nozzles 6a and 6b by the some small hole arranged in the left-right direction.

  A high-pressure airflow generated by driving the blower fan 2 circulates in the blower duct 4 and is ejected from the jet outlets 6a and 6b to the manual insertion portion 10. Accordingly, the blower fan 2 constitutes a high-pressure airflow generation unit that generates a high-pressure airflow that is ejected to the manual insertion unit 10.

  FIG. 4 is a block diagram showing the configuration of the hand dryer 1. The hand dryer 1 includes a control unit 12 that controls each unit. The control unit 12 includes a timing device 13 inside, and a power switch 16, a hand detection sensor 9, an intermittent operation setting unit 17, an air volume adjustment unit 14, a display unit 18, a blower fan 2, an ion generator 22, and a heater 21 are connected. Is done.

  The time measuring device 13 measures the elapsed time after the blower fan 2 and the ion generator 22 are stopped, and measures the elapsed time after the driving of the ion generator 22 is started. The power switch 16 is provided on the surface of the housing 5 and turns on / off the power of the hand dryer 1. The intermittent operation setting unit 17 is provided on the surface of the housing 5 and performs an operation of setting an interval for intermittently operating the ion generator 22 when the blower fan 2 is stopped.

  The air volume adjusting unit 14 controls the output of the motor 2 a of the blower fan 2. Thereby, the operation sound which generate | occur | produces from the ventilation fan 2 can be reduced, and the discomfort with respect to a user can be reduced. The display unit 18 includes a liquid crystal panel or the like provided in the housing 5 and displays an operation state and a setting screen of the hand dryer 1.

  In the hand drying device 1 having the above-described configuration, when a wet hand after washing by the user is inserted into the hand insertion unit 10, the hand detection sensor 9 detects the user's hand. Thereby, the ventilation fan 2, the heater 21, and the ion generator 22 are driven. As the blower fan 2 is driven, indoor air flows into the blower duct 4 from the air inlet 11 and a high-pressure airflow is generated.

  The air flowing into the blower duct 4 from the intake port 11 is heated by the heater 21. The high-pressure air flow heated by the heater 21 is branched from the horizontal part 4a of the blower duct 4 to the front part 4b and the back part 4c as indicated by arrows A1 and A3. And the high pressure airflow which distribute | circulates the front-surface part 4b and the back surface part 4c is jetted to the manual insertion part 10 from the jet nozzles 6a and 6b, as shown by arrow A2 and A4.

  The high-pressure air current jetted from the jet outlets 6a and 6b to the hand insertion portion 10 collides with the user's hand from the front and rear. Thereby, the water drop adhering to the hand is blown off, and the user's hand can be dried. Moreover, since the high-pressure airflow is heated by the heater 21, the hand drying ability can be further improved. The water droplets peeled off from the hand are dropped from the drain port 23 a along the plate-like member 24 and are collected in the drain tank 8.

  Further, positive ions and negative ions are released into the drainage tank 8 by driving the ion generator 22. Thereby, generation | occurrence | production of mold | fungi and various germs is prevented by ion in the drain tank 8, and it disinfects. Some ions flow into the manual insertion portion 10 through the drain port 23a. Thereby, generation | occurrence | production of the mold | fungi and various germs of the hand insertion part 10 is prevented.

  When ions are released toward the manual insertion portion 10 by the ion generator 22, a large amount of ions easily flows out of the manual insertion portion 10 by the high-pressure airflow. For this reason, by discharging ions into the drainage tank 8, the outflow of ions is suppressed to only a part of the drainage tank 8 that flows into the manual insertion portion 10.

  Further, as shown in the detailed view of the main part of FIG. 5, since the plate-like member 24 is inclined with respect to the horizontal, the opening area when viewed in plan is small. For this reason, inflow of the high-pressure airflow ejected to the manual insertion portion 10 into the drainage tank 8 is suppressed by the plate-like member 24. As a result, the high-pressure airflow circulates in the hand insertion portion 10 and is discharged out of the hand dryer 1 without disturbing the air in the drain tank 8. Accordingly, the outflow of ions to the outside of the manual insertion portion 10 due to the high-pressure air flow and the scattering of the water stored in the drain tank 8 into the manual insertion portion 10 are reduced.

  Further, the high-pressure air flow that collides with the hand and descends toward the bottom of the hand insertion part 10 is directed to the inner wall of the hand insertion part 10 facing the velocity component and the hand of the hand insertion part 10 as indicated by an arrow A5 in FIG. A velocity component. Since the plate-like member 24 arranged at the front part of the hand insertion portion 10 is inclined so that the rear side is lowered, the crossing angle between the plate-like member 24 and the airflow colliding with the front surface (palm) of the hand and descending is perpendicular to Get closer. Further, since the plate-like member 24 disposed at the rear portion of the hand insertion portion 10 is inclined so as to be raised rearward, the crossing angle between the plate-like member 24 and the airflow that collides with the back of the hand (back of the hand) and descends is perpendicular. Close to. Thereby, the inflow of the high-pressure airflow into the drainage tank 8 can be further suppressed.

  When the user's hand is retracted from the hand insertion portion, the blower fan 2 and the heater 21 are stopped by the detection of the hand detection sensor 9. In addition, after the blower fan 2 is stopped, the ion generator 22 is driven and stopped for a predetermined time (for example, 1 hour) by the time measuring device 13. As a result, ions diffuse from the drainage tank 8 to the manual insertion portion 10 through the adjacent plate-like members 24, and generation of mold and bacteria on the wall surface of the manual insertion portion 10 is prevented. By stopping the blower fan 2 and the heater 21, power consumption can be reduced and operation noise of the blower fan 2 can be prevented, and ions can be easily supplied to the manual insertion portion 10.

  Further, the ion generator 22 is intermittently operated based on the setting of the intermittent operation setting unit 17 in a state where the blower fan 2 is stopped. For example, the ion generator 22 is repeatedly operated for 1 hour and stopped for 6 hours by intermittent operation. Thereby, the waste water tank 8 and the manual insertion part 10 are disinfected regularly, and the hand dryer 1 can always be maintained in a clean state. In the intermittent operation, the ion generator 22 is driven while the blower fan 2 is stopped, so that power consumption is reduced and no operation noise is generated. The intermittent operation time can be arbitrarily set by the intermittent operation setting unit 17 depending on the use environment of the hand dryer 1 or the like.

  According to the present embodiment, since the ion generator 22 for releasing ions is provided in the drainage tank 8, it is possible to prevent mold and germs in the drainage tank 8 with a simple configuration, and by ions diffusing through the drainage port 23a. Mold and germs of the manual insertion portion 10 can be prevented. Moreover, the ventilation duct 4 and the manual insertion part 10 can be formed using the resin components which do not require ozone resistance. Therefore, the hygienic hand dryer 1 can be realized at low cost.

  In addition, since the plurality of plate-like members 24 inclined with respect to the horizontal are arranged at the drain outlets 23a at a predetermined interval, the high-pressure airflow jetted to the manual insertion portion 10 is suppressed from flowing into the drain tank 8 by the plate-like member 24. The Accordingly, it is possible to reduce the outflow of ions due to the high-pressure airflow and the scattering of the water stored in the drainage tank 8. In addition, the cross-sectional area of the passage formed between the plate-like members 24 is ensured widely, and ions can be easily supplied to the manual insertion portion 10 through the passage when the high-pressure airflow is stopped.

  Further, the plate-like member 24 arranged at the front part of the hand insertion part 10 is inclined so that the rear part is lowered, and the plate-like member 24 arranged at the rear part of the hand insertion part 10 is inclined so that the rear part is raised, The crossing angle between the airflow that collides with the hand and descends and the plate-like member 24 is close to a right angle. Therefore, the inflow of the high-pressure airflow into the drainage tank 8 can be further suppressed.

  In addition, the blower fan 2 and the ion generator 22 are driven when a hand is inserted into the hand insertion unit 10 by the detection of the hand detection sensor 9, and the blower fan 2 is stopped when the hand is retracted from the hand insertion unit 10. Since the ion generator 22 is driven for a predetermined time, the generation of noise can be suppressed with low power consumption, and ions can be easily supplied to the hand insertion unit 10 to maintain the hand insertion unit 10 in a clean state.

  Moreover, since the blower fan 2 is stopped and the ion generator 22 is intermittently operated when the hand is retracted from the hand insertion unit 10, the hand dryer 1 can be always kept clean.

  Next, FIG. 6 has shown side surface sectional drawing of the hand-drying apparatus 1 of 2nd Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, an ion generator 22 is further provided in the air duct 4, and ions are released into the air duct 4. Other parts are the same as those in the first embodiment.

  The ion generator 22 is attached to the lower surface of the partition plate 23, and is attached to the wall surfaces of the front surface portion 4 b and the back surface portion 4 c of the air duct 4. Through holes (not shown) corresponding to the ion generators 221 and 222 (see FIG. 3) are provided on the wall surfaces of the front surface portion 4b and the back surface portion 4c. As a result, ions are released from the ion generating portions 221 and 222 into the front surface portion 4b and the back surface portion 4c through the through holes.

  When the wet hand after the user's cleaning is inserted into the hand insertion portion 10, the hand detection sensor 9 detects the user's hand. Thereby, the ventilation fan 2, the heater 21, and each ion generator 22 are driven. The high-pressure airflow flowing through the air duct 4 includes positive ions and negative ions by the ion generator 22. Then, a high-pressure airflow containing ions is ejected from the ejection ports 6a and 6b to the manual insertion portion 10.

  As a result, the hand is dried and the germs attached to the hand are removed by the ions. In addition, since ions are ejected from the spouts 6a and 6b toward both the palm and the back of the hand, germs attached to the entire hand can be removed in a short time without sliding the hand. Therefore, it is possible to perform hand disinfection with a simpler configuration than supplying disinfecting liquid to the hand as disclosed in Patent Document 2. Moreover, it is possible to perform hand drying and disinfection in a short time without trouble.

  The number and arrangement of the ion generators 22 provided in the air duct 4 can be appropriately selected and changed according to the required ion concentration. For example, two or more ion generators 22 may be provided side by side in the air flow direction.

  Further, the time required for disinfecting the hand during hand drying by the hand drying device 1 may be displayed on the display unit 18. Thereby, reliable sterilization can be urged to the user. At this time, the time required for sterilization may be counted down and displayed.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since ions are released to the blower duct 4 by the ion generator 22, ions are included in the high-pressure airflow ejected to the hand insertion portion 10, and various bacteria attached to the hands are removed as the hands are dried. Thereby, it is possible to perform hand drying and sterilization in a short time without trouble with a simple configuration.

  In the first and second embodiments, the blower duct 4 and the manual insertion portion 10 may be made into a resin blow molded product obtained by antibacterial treatment, and the surface thereof may be further subjected to water repellent treatment. Thereby, the hand-drying apparatus 1 which can suppress the proliferation of bacteria and can maintain a clean state that is difficult to get dirty can be obtained. Moreover, although the hand insertion part 10 is opened in the upper surface of the housing | casing 5, you may open in the front surface. At this time, the blower fan 2 may be disposed above the manual insertion portion 10.

  According to the present invention, the present invention can be used in a hand dryer that dries wet hands after washing.

DESCRIPTION OF SYMBOLS 1 Hand dryer 2 Blower fan 4 Blower duct 5 Case 6a, 6b Spout 8 Drain tank 9 Hand detection sensor 10 Hand insertion part 11 Air inlet 12 Control part 13 Timekeeping device 14 Air volume adjustment part 16 Power switch 17 Intermittent operation setting part DESCRIPTION OF SYMBOLS 18 Display part 21 Heater 22 Ion generator 23 Partition plate 23a Drain outlet 24 Plate-shaped member

Claims (7)

  A hand insertion portion that is recessed in the housing and into which a hand is inserted, a high pressure air flow generation portion that generates a high pressure air flow, and a jet outlet through which the high pressure air flow generated by the high pressure air flow generation portion circulates and faces the hand insertion portion A drainage tank that collects water droplets blown from the hand by the high-pressure airflow that is communicated with the manual insertion portion and discharged from the jet outlet through a drainage port that opens at the bottom of the manual insertion portion; A hand-drying device comprising an ion generator for discharging ions into the drainage tank.   The hand dryer according to claim 1, wherein a plurality of plate-like members inclined with respect to the horizontal are arranged in the drain outlet at predetermined intervals.   The plate-like member arranged at the front part of the manual insertion part is inclined so that the rear part is lowered, and the plate-like member arranged at the rear part of the manual insertion part is inclined so that the rear part is raised. The hand dryer according to claim 2.   A hand detection sensor for detecting a hand inserted into the hand insertion unit; when the hand is inserted into the hand insertion unit, the high pressure air flow generation unit and the ion generation device are driven; The hand dryer according to any one of claims 1 to 3, wherein when the hand retreats, the high-pressure airflow generator is stopped and the ion generator is driven after a predetermined time.   A hand detection sensor for detecting a hand inserted into the hand insertion unit; when the hand is inserted into the hand insertion unit, the high pressure air flow generation unit and the ion generation device are driven; The hand-drying device according to any one of claims 1 to 3, wherein when the hand retreats, the high-pressure airflow generation unit is stopped and the ion generator is intermittently operated at a predetermined time interval.   The hand dryer according to any one of claims 1 to 5, wherein the ion generator is further provided in the air duct, and ions are released into the air duct. The ion generator generates positive ions composed of H ⁺ (H ₂ O) m (m is an arbitrary natural number) and negative ions composed of O ₂ ⁻ (H ₂ O) n (n is 0 or an arbitrary natural number). The hand dryer according to any one of claims 1 to 6, wherein the hand dryer is mainly generated.

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