Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
  • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
  • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
  • A47K10/48—Drying by means of hot air

Definitions

• the present invention relates to a hand dryer for drying wet hands, and more particularly, to a hand dryer having a sterilizing function.
• hand dryers are installed in toilets used by many people in highway rest areas, food stores, schools, and public institutions, and are used by the user to dry their hands immediately after blowing the fan. . .
• Such a hand dryer is generally composed of a casing and a blowing fan, a blowing motor, a heating means, a control unit, an inlet port, a discharge port, a sensor, and the like installed in the casing.
• the technical problem to be achieved by the present invention is to solve the conventional problems, by installing a fine filter of less than about 0.2 ⁇ 0.3 3 ⁇ 4m mesh spacing of the filter in the suction port to physically prevent bacteria from passing through, It is to provide a hand dryer that is sterilized by irradiating UV-C ultraviolet rays to the bacteria collected by the fine filter to be sterilized by drying.
• a hand dryer for introducing dry air into the main body to generate a dry air with a predetermined amount of air through the blowing fan and the blowing motor in the main body to discharge the outside air to the outside of the main body
• a fine filter disposed at a rear end of the suction port to filter bacteria or foreign substances
• a control unit for controlling a drying air to be generated through the blower fan and the blower motor when the hand detection signal is output from the detection sensor.
• the fine filter is characterized by consisting of a mesh that passes through the drying wind but the bacteria that can be contaminated through the hand does not pass by about 0.2 ⁇ 0.3m or less to form an empty space.
• a filter sensor detecting whether the microfilter is replaced
• ⁇ 25> further includes an alarm unit for alarming
• the control unit controls the alarm unit to output an alarm to replace the fine filter when the use time of the fine filter exceeds the reference use time, which is a standard of exchange, and indicates that the fine filter has been replaced from the filter sensor.
• the signal is input, characterized in that the alarm to be released.
• a filter sensor detecting whether the microfilter is replaced
• the control unit controls the alarm unit to output an alarm to replace the fine filter when the number of times of use of the fine filter exceeds a reference number of times of use as a reference for replacing the fine filter, and the fine filter is replaced by the filter sensor.
• the signal is input to the alarm characterized in that to clear the alarm.
• the control unit turns off the ultraviolet irradiation unit when a hand is detected by the detection sensor while irradiating the ultraviolet ray.
• the hand dryer for flowing the outside air into the main body to generate a dry air with a predetermined amount of air through the blowing fan and the blowing motor in the main body to discharge the outside air to the outside of the main body,
• a blowing temperature sensor detecting a temperature of the heated drying wind
• the blower fan and the blower motor are configured.
• control unit may stop the operation of the blowing motor and the heating unit.
• the first temperature is 20 to 60 degrees Celsius
• the second temperature is characterized in that 80 to 150 degrees Celsius.
• the inhaled dry wind filters the bacteria through the microfilter, and further, sterilizes the bacteria filtered through the microfilter with ultraviolet rays, so that the bacteria are not discharged into the dry wind. .
• FIG. 1 is a block diagram of a hand dryer according to an embodiment of the present invention.
• FIG. 2 is a perspective view of a hand dryer according to an embodiment of the present invention.
• 3 is a diagram of bacteria that can be easily contaminated through the hand.
• FIG. 5 is a configuration diagram of a hand dryer according to another embodiment of the present invention.
• FIG. 6 is a flowchart illustrating a sterilization operation of the hand dryer according to the embodiment of the present invention.
• FIG. 1 is an internal configuration of a hand dryer according to an embodiment of the present invention
• Figure 2 is an external perspective view of the hand dryer according to an embodiment of the present invention.
• the hand dryer 100 according to an embodiment of the present invention, the casing 200 and the blowing unit 300, the intake and exhaust unit 400, the fine filter 500, detection The sensor 610, the power supply unit 800, the ultraviolet irradiation unit 900, and the control unit 700 are included.
• the casing 200 is for storing and protecting each part, and a plastic resin or metal is used, and in some cases, a casing 200 may form a path to be blown through the casing 200.
• Blowing unit 300 is composed of a blowing fan 310 for generating a dry wind, and a blowing motor 320 for rotating the blowing fan 310.
• the intake and exhaust unit 400 is a suction port for sucking the wind from the outside to the blowing fan 310
• the air blowing fan 310 is composed of a discharge port 420 is discharged for hand drying.
• the micro filter 500 is composed of a net that passes through a dry wind but does not form a hollow space of about 0.2 to 0.3 ⁇ 4 ⁇ or more, which cannot pass through germs that may be contaminated through the hand.
• the surroundings are airtight so that only the fine filter 500 passes without leaking.
• a high efficiency part i culate air (HEPA) that removes 99.97% of particles equal to or larger than 0./m may be used.
• a prefilter (not shown) having a larger passing particle than the microfilter may be provided between the suction port 420 and the ultraviolet lamp 910 to prevent clogging of the microfilter 500.
• the ultraviolet irradiator 900 is composed of an ultraviolet lamp 910 and an ultraviolet lamp stabilizer 920 to directly irradiate ultraviolet rays of UV-C (peak wavelength 253.7 nm) to filter bacteria that are filtered through the microfilter 500. Kills.
• the microfilter 500 or the prefilter may be sterilized by antimicrobial treatment by silver nano coating or chitosan-containing method.
• the filter is filtered through the microfilter 500 without any wind leakage from the inlet 410 for hand drying, and irradiates UV-C ultraviolet rays to the surface of the suction side of the microfilter 500. Can kill all bacteria.
• the control unit 700 does not irradiate ultraviolet rays, and in order to reduce the long life and energy consumption of the ultraviolet lamp 910, it is necessary for sterilization. It can be operated by intermittent driving method such as irradiating only a small amount of time.
• the power supply unit 800 supplies the operating power to each part.
• the detection sensor 610 non-contactly detects the hand put to dry. If necessary, a contact sensor may be used.
• the control unit 700 receives the operation start signal from the sensor 610 and controls the blowing motor 320, the heating unit 330, and the ultraviolet irradiation unit 900 through the driving unit 710.
• the hand dryer 100 is a timer for measuring the use time (or use frequency)
• a filter sensor 510 for detecting whether the fine filter 500 is replaced may be further included.
• the timer 720 checks a predetermined usage time, and the controller 700 refers to the timer and performs a filter replacement when the usage time of the microfilter 500 exceeds the reference usage time, which is the replacement cycle of the microfilter.
• the alarm outputs the alarm through the alarm unit 730.
• the filter sensor 510 detects the exchanged state and provides an alarm cancel signal to the control unit 700 so that the alarm is released when the fine filter 500 is replaced while the filter replacement alarm is output.
• the power supply unit 800 of the hand dryer 100 may be provided with an auxiliary power source of a battery box that enables detection even when the fine filter 500 is replaced, or an electronic circuit corresponding thereto. Inexpensive contact switches can also be used to generate a clear alarm when the filter is removed.
• 3 is a schematic view of bacteria that can be easily contaminated through the hand.
• representative bacteria that can be easily contaminated through the hand include the following bacteria.
• Pathogenic E. coli (0-157) is present in the feces of humans and livestock and causes food poisoning. It is weak to heat and dies when heated for 1 minute at 74 degrees Celsius or more. It is an annular shape of ⁇ 4 ⁇ .
• Salmonella is a representative bacterium in humans, livestock, and meat that causes food poisoning. It is vulnerable to heat and dies when heated for 1 minute at 74 degrees Celsius or more. The diameter is 0.6; / m and the length is 2 to m. It is an annular shape.
• Staphylococcus aureus is widely distributed in the natural world such as soil and sewage, and about 303 ⁇ 4 of healthy people carry it. It is relatively resistant to heat, but dies when heated for 30 minutes at 80 degrees Celsius. It is spherical from 0.8 to ⁇ . ⁇ .
• the cholera bacteria (Vibrio cholerae) are attached to the body surface of fish and shellfish and the intestines and gills. It is contaminated by human hands, and is weak to heat and is killed when heated for over 1 minute at 74 degrees Celsius or over 15 minutes at 60 degrees Celsius or more, and has a diameter of 0.3 to ⁇ . ⁇ ⁇ ⁇ , and a length of 1.0 to It is annular of 5.0 ⁇ .
• FIG. 4 is a view showing the degree of killing bacteria with time when UV-C ultraviolet (output 3W) irradiation.
• the ultraviolet lamp 910 is preferably placed in front of the micro filter 500, which is the place where the ultraviolet light can be irradiated on the surface where the wind of the micro filter 500 is sucked.
• the total opening area of the discharge port 420 is smaller than the total opening area of the suction port 410 so as to form a high pressure wind by compressing the dry air to obtain a high speed wind.
• the control unit 700 controls the heating unit 330, the blowing motor 320 and the blowing fan 310 while detecting the blowing temperature in real time through the degree sensor 620 to stand the amount of dry air. Stand and blow while blowing to release the anti-silver wind. For example, initially the heating unit 330 is operated to the maximum and gradually fixed, and the amount of dry air is also reduced initially and then gradually raised to be stable.
• Such an embodiment can be variously modified, and one example of such modification will be described below.
• a hand dryer having both the functions of the above-described hand dryer and the following hand dryer may be used as necessary.
• the same reference numerals are used to designate components having the same function.
• the appearance is similar to that of FIG.
• FIG. 5 is a diagram illustrating an internal configuration of a hand dryer according to another embodiment of the present invention.
• the 100 includes a casing 200, a blower 300, an intake and exhaust unit 400, a detection sensor 610, a blower silver sensor 620, a power supply 800, and a controller 700. .
• the casing 200 is for storing and protecting each part. Metal may be used, and in some cases, may form a path through which the air is blown through the casing (200), and further, the outlet from the casing (200) and the heat generating portion (330) of the heat generating portion (330) and the discharge opening (420). Casing 200 between the 420, it is preferable to use a heat-resistant material without deformation even at a temperature of about 200 ° C for blowing high temperature wind.
• Blowing unit 300 is composed of a blowing fan 310 for generating a dry wind, a blowing motor 320 for rotating the blowing fan 310.
• the intake and exhaust unit 400 is a suction port for sucking the wind from the outside to the blowing fan 310
• the blower fan 310 is composed of a discharge port 420 is discharged for hand drying.
• the power supply unit 800 supplies operating power to each part.
• the detection sensor 610 detects noncontact or contacting all the input hands to dry.
• the blower temperature sensor 620 is located between the heat generating unit 330 and the discharge port 420 to detect the blown temperature, it is preferable to use a thermocouple (thermal thermocouple) with a small heat capacity for fast temperature detection.
• the control unit 700 receives the detection signals from the detection sensor 610 and the blowing temperature sensor 620 to control the blowing motor 320 and the heat generating unit 330 through the driving unit 710, the timer 720
• the blowing air temperature is 80 degrees to 150 degrees Celsius to which the bacteria are killed by referring to the detection temperature of the degree sensor 620. Start sterilization for minutes to 2 hours. These silvers and times can be varied as needed.
• the temperature of the silver wind is 20 to 60 degrees Celsius
• the temperature of the high silver wind may be about 80 to 150 degrees Celsius
• the degree of silver of the hot wind may be modified to 150 to 200 degrees Celsius.
• the control unit 700 discharges a high-temperature wind in which bacteria are killed within a temperature range in which the casing 200 is not damaged.
• the airflow passage from 330 to the discharge port 420 is sterilized.
• the blower motor 320 and the heat generating unit 330 are turned off.
• a method such as turning on the power while detecting the detection sensor 610 or continuously detecting the detection sensor 610 for a predetermined time or more may be used.
• Blowing motor 320 detects the ambient temperature through the degree sensor 620 before blowing so that the cold wind is not discharged so that the dry air is discharged within 20 to 60 degrees Celsius if the ambient temperature is 15 degrees Celsius or less. And by controlling the heating unit 330 is characterized in that to provide a user always warm drying wind.
• control unit 700 detects whether a hand is detected from the detection sensor 610.
• control unit 700 when a hand is detected, the control unit 700 generates a warm dry wind by controlling the blower motor 320 and the heating unit 330 when the surrounding temperature is 15 degrees or less with reference to the blowing temperature sensor 620. If abnormal, the blowing motor 320 is controlled to generate a dry wind. ⁇
• FIG. 6 is a flowchart illustrating a sterilization operation of a hand dryer according to another embodiment of the present invention.
• the controller 700 refers to the timer 720 to determine whether to use the hand dryer for a predetermined time or more or to start the sterilization start condition of the discharge port 420 of the forced sterilization signal (S610).
• the predetermined time may be different depending on the installation environment of the hand dryer as the time taken for breeding the bacteria, and may be set in advance for 1 to 24 hours if necessary.
• the timer 720 continues to check the usage time (S620).
• the control unit 700 starts the sterilization operation for 1 minute to 2 hours at about 80 degrees Celsius when the bacteria are killed by referring to the detection degree of the blowing temperature sensor 620. (S630). These silvers and times can be varied as needed.
• the heat generating unit 330 When the sterilization operation signal is started, the heat generating unit 330 generates heat and the blower motor 320 is driven to discharge high-temperature wind to sterilize the air passage from the heat generating unit 330 to the discharge port 420. . .
• the controller 700 determines whether the hand is detected by the detection sensor 610 (S640).
• control unit 700 turns off the blower motor 320 and the heat generating unit 330 to thereby sterilize the sterilization.
• the embodiment of the present invention described above is not implemented only through an apparatus and a method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. And this implementation is From the description of the embodiments described, those skilled in the art can easily implement.

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• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Drying Of Solid Materials (AREA)
• Apparatus For Disinfection Or Sterilisation (AREA)

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Citations (4)

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• 2011
  • 2011-12-29 KR KR1020110146179A patent/KR101416877B1/ko active Active
• 2012
  • 2012-11-13 WO PCT/KR2012/009405 patent/WO2013100352A1/fr not_active Ceased

Patent Citations (4)

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