US3809374A - Vaporizer-humidifier - Google Patents

Vaporizer-humidifier Download PDF

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Publication number
US3809374A
US3809374A US00832279A US83227969A US3809374A US 3809374 A US3809374 A US 3809374A US 00832279 A US00832279 A US 00832279A US 83227969 A US83227969 A US 83227969A US 3809374 A US3809374 A US 3809374A
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United States
Prior art keywords
vaporization chamber
base
air
chamber
vaporizer
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Expired - Lifetime
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US00832279A
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English (en)
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G Schossow
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Individual
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Individual
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Publication date
Priority to US00832279A priority Critical patent/US3809374A/en
Application filed by Individual filed Critical Individual
Priority to GB2820170A priority patent/GB1308246A/en
Priority to CA085146A priority patent/CA926909A/en
Priority to JP45049550A priority patent/JPS5212498B1/ja
Priority to CH875570A priority patent/CH536984A/de
Priority to DE19702029472 priority patent/DE2029472A1/de
Priority to US402288A priority patent/US3873806A/en
Priority to US05/444,337 priority patent/US4028526A/en
Application granted granted Critical
Publication of US3809374A publication Critical patent/US3809374A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/001—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect or interrupted earth connection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/18—Air-humidification, e.g. cooling by humidification by injection of steam into the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/29—Heaters submerged in liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/46—Residue prevention in humidifiers and air conditioners
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/65—Vaporizers

Definitions

  • vaporization chamber is constructed to be selfcleaning, to permit control of the temperature of the exiting moist air, and to minimize the chance of burns.
  • This invention relates to an improvement in humidifiers and in one aspect-to a vaporizer-humidifier for producing and dispelling clean moist warm air.
  • Vaporizers for the vaporization of fluid substantially immediately within a smaller vaporization chamber which. has limited communication between a larger volume of liquid surrounding the vaporization chamber. The steam generated is expelled through a port at the top of the vaporization chamber. Examples of Vaporizers of this type humidified. US Pat. Nos. 1,853,853; 3,188,007; and
  • 3,348,821 are examples of these cold or heatless humidifiers.
  • Other types of cold humidifiers blow air through woven or sponge like water screens or carriers.
  • sm i ra vaat ess te-an alas are t su distilled water vapor, free of mineral dust and undesirable disease-producing organisms, i.e., viruses, bacteria, yeast, molds and allergenic particles, i.e., pollens, hous du ssi fil t srs d h wh shis ofkagw therapeutic value and also provides a degree of warmth to the sick room, necessary in the colder climates, (the heating of a sick room by hot air circulation can actually carry away the generated humidity via the cold air returns and the warm vapor reduces the heat and huid y 9.
  • distilled water is costly and therefore seldom utilized, 3) it dissipates small particles of water which require greater quantities of heat from the atmosphere to convert them into a gaseous vapor, (this actually cools a sick room and in trying to alleviate the problem the home heating system will remove the generated humidity from the sick room through the cold air returns to the furnace) 4) it generally produces a blanket of dampness around the humidifier, and 5) it produces a for medical uses, facial saunas, room or area humidifiers, and for central or forced air furnace humidifiers.
  • the present invention affords steam vapor in a manner to regulate temperature within a safe range.
  • the present invention provides a safe humidifier designed to be self-cleaning or easily cleaned, no demineralizing or pretreating of the source water is required.
  • the vaporizer-humidifier of the present invention produces vaporized water humidity avoiding the objectional deposits of mineral dust in the area to be humidified.
  • the vaporizer-humidifier can thus serve to reduce static electricity as is necessary in hospital surgery departments.
  • the portable medical vaporizer-humidifier of the present invention adapts itself to be used in the open, to have a conduit connected thereto allowing the discharged warm moist air to be mixed with medical gases, i.e., oxygen, anesthetic gases, etc. or to be carried to a distant point and concentrated or to be used as a facial sauna or to be inhaled directly from the conduit without danger of burns.
  • the vaporizer-humidifier is scald and burn proof as the small volume of water in the vaporization chamber is rapidly mixed and cooled by the cold water present in the surrounding'replenishable water supply reservoir or storage chamber in the event the unit should tip and fall or be opened for refilling.
  • the mixing is accomplished by separation of the elements forming the vaporization chamber or upon the water therein pouring through air vents in the top of the vaporization chamber into the storage reservoir in the event the cover and base do not separate.
  • the present invention also provides a self-cleaning immersion heating unit and boiling chamber for use in I humidifiers.
  • the vaporizer-humidifier of the present invention is of the heat type but restricts the dangerous aspects of prior devices by providing an isolated insulated vaporization chamber within a larger cold reservoir. Further,
  • vaporization chamber a self-cleaning immersion heater in the. vaporization chamber, a vaporization chamber which has a scale resistant interior lining, a vapor dispelling fan for reducing the temperature of the vapor and reducing the air pressure in the vaporization chamber and the time to generate the vapor, and means affording the vapor to be directed remotely with relationship to the humidifier unit.
  • It provides an impurity collection system and a novel water feed system for the vaporization chamber.
  • the construction of the vaporization chamber, communicating air and water passage and surrounding reservoir, with the fan above the chamber afford an advantage heretofore not presented by the prior art. 7
  • FIG. 1 is a vertical sectional view taken diametrically through the center of one embodiment of the vaporizcap 24 within which is a spaced generally hemispherically-shaped member 26 to define therebetween'.
  • vapor discharge or exhaust chamber 27 Generally circular tubular members 25, fitted in the cap 24 and member 26, define openings which lead from the outer surface of the cap 24 to communicate with the inner chamber formed by the wall 26in which is disposed a drive motor 28 for a fan 30.
  • the fan 30 is supported from the motor 28 by the drive shaft 31.
  • the motor 28 and fan 30 are supportedfrom a frame 32 disposed within the cap 24.
  • the shaft 31 extends through an enlarged central opening 29 in the frame 32, which opening 29 together with openings 30a in the top plate of a the fan 30 draw air through openings 25 into the inner er-humidifier constructed in accordance with the present invention;
  • FIG. 2 is a plan view of the base of the vaporizerhumidifier generally as seen along lines 2-2 of FIG. 1;
  • FIG. 3 is a bottom view of the top portion of the vaporizer-humidifier as seen along the lines 3-3 of tion chamber.
  • a portable medical vaporizer-humidifier 10 which comprises a top portion ll'and a base portion 12.
  • the base portion 12 is formed to comprise a storage chamber 14 for holding chamber 26 to cool the motor and to afford sufficient air flow through the unit to maintain the discharged vapor at a safe temperature when a second air flow control, to be hereinafter described, is completely closed.
  • the frame 32 has peripheral openings 34 communicating with the vapor discharge chamber 27 through which the vapor and motor cooling air are discharged.
  • the fan is positioned directly above the vaporization chamber 14 and a central opening 35 disposed in the plate 21 is positioned in registry with an opening 36 in the bottom plate of thefan defining the inlet area of the fan 30.
  • the opening 36' is centrally positioned relative to the fan blades 37.
  • the base 12 is generally circular and tub-shaped with a bottom wall 16 and a circular side wall 17.
  • the storage chamber 13 is adaptedtobe filled with liquid, such as tap water, having natural impurities therein including such minerals as calcium, iron, magnesium, sodium and potassium, and possibly dust particles.
  • This base is supported by buttons 18 disposed beneath thebottom wall 16.
  • the central portion of the bottom wall 16 may have an offset depressed wall portion 19, as indicated in FIG. 1.
  • a circular disc 20 of rigid closed cell polymeric foam material is adhered to the wall portion l9.
  • This disc is formed with a circular groove to receive the lower end of a tubular member 39 which forms the side wall of the vaporization chamber 14.
  • a passageway 62 is formed in the disc 20 to allow water from the storage chamber 13 to enter the vaporization chamber 14.
  • a one-way check valve 61 prevents the flow of hot water from the steam chamber in the other direction and thus the water in the storage chamber will not be heated.
  • the cover 1 1 is adapted to telescopically fit over and onto the top of the circularside wall 17 of the base 12.
  • the cover 11 comprises a generally planar, and in the illustrated embodiment circular, plate member 21, depending from which is a circular flange 22 having an inner diameter to receive the top of the circular side wall 17.
  • a dome-shaped tive base member 20 Supported above the plate 21 is a dome-shaped tive base member 20, the vaporization chamber 14.
  • the tubular member 39 is preferably cylindrical and is formed of a light nonporous closed cell rigid polymeric foam insulating material, the interior surface of which is coated to prevent the collection of scale, to insulate the vaporization chamber 14 from the storage chamber 13.
  • the bottom of the member 39 fits in a mating groove 40 formed in the top of the base member 20.
  • the air and vapor formed by the boiling liquid in the vaporization chamber 14 is then drawn through the opening 35 to be moved by the fan through the vapor discharge chamber 27.
  • 'Air enters the base 12 to move through the vent holes 41 through one or more inlet ports 42 formed with an adjustable cover 43 in the cover plate 21 to allow for variation in the amount of air entering the base 12 and the temperature of the steam discharged.
  • vent holes 41 will also permit the hot water in the vaporization chamber to pour out and mix with the water in the reservoir if the unit is tipped and the cover and base do not separate and destroy the vaporization chamber. The chance of burns from the hot water is thus eliminated.
  • a heating element 44 Disposed within the vaporization chamber 14 is a heating element 44 preferably comprising an electrical resistor sealed within an outer protective sheath which ing.
  • element 44 has the greater portion thereof positioned closely adjacent the bottom of the vaporization chamber 14 to utilize as much of the liquid which may be stored in the supply reservoir as possible before operation is discontinued. Operation is discontinued'by the area adjacent the heating element 44 reaching a temperature of about 220 F. or greater as determined by the sensitivity of the element 45. The heating element 44'will not reach this temperature except when the supply of water in the vaporization chamber is nearly depleted exposing the heating ring of the heating element 44.
  • the vaporizer-humidifier of the present invention also includes a suitable electric circuit to energize the motor 28 and the heating element 44, and in this circuit is included the conventional electrical plug 51 affording connection of the circuit to a source of electricity, which via suitable conductors and through an interlock switch 52 provides electrical ,power through a circuit breaker 49 to the heating element 44 and to the motor 28.
  • the interlock switches closes with the cover 11 in place and the switch resting against a shelf 53 supported from the outside of wall 17.
  • the thermostatic safety switch device 45 will shunt the circuit breaker to open the same when its operating temperature is reached. Opening of the circuit through the circuit breaker can close a circuit to an alarm buzzer (not shown) to indicate audibly that the water supply needs replenishing.
  • the signal could be visual and not audible, i.e., a light.
  • the thermostatic safety switch device 45 comprises a bimetallic bar which-upon attaining a -temperature of 220 F., for example, closes a set of contacts, to short circuit the circuit breaker anddeenergize motor 28 and heater 44. It would also energize the alarm.
  • the cap 24 may be formed at its uppermost point with a discharge nozzle 55 which may be adjustable 360 F. relative to the top of the cap to determine the direction of the discharge of the warm moist air.
  • the discharge end 56 of the nozzle 55 may be formed with a suitable fastener to receive the end 57 of a conduit 58 through'which the warm moist air may be directed to a distant location, for example, into a tent over a bed, directly to an oxygen tent or to another unit, e.g., a furnace plenum-
  • Also adapted for connection on the end 56 of the discharge nozzle 55 may be a cone or molding forming a chamber for a facial sauna.
  • a transparent tube 59 In the base 12 of the vaporizer-humidifier and penetrating the wall 17, may be a transparent tube 59 to form a water level indicator for the storage chamber 13 and generally for vaporization chamber 14.
  • the vaporizer-humidifier 10 is scald and burn proof as the separation of the cover 11 from the base 12 destroys the vaporization chamber 14 and any water therein readily mixes with the colder (room temperature) water in the storage reservoir as cylindrical surface 39 is separated from a mating groove 40in the disk 20. Separation of the cover also electrically disconnects the heater 44 and motor 28.
  • the moving air through the vaporization'chamber 14 produces a vapor discharge having a temperature considerablyless than steam and this is controlled by the covers 43 on the air inlet opening or openings 42.
  • the unit 10 is easily cleaned of any scale or deposit which accumulates in the vaporization chamber each time the base is refilled simply by rinsing.
  • the valve is a one-way valve for a passage 62 leading from the reservoir 13 into vaporization chamber 14.
  • the valve illustrated uses a ball 63, heavier than water, to prevent water flow from the vaporization chamber 14 into reservoir 13. This prevents the heating of water in reservoir 13.
  • a vaporizer-humidifier 69 formed generally for use in connection with aroom-size humidifier or central heating unit.
  • This particular embodiment is for j the central heating unit and comprises a cabinet or frame 70 defining a storage chamber 71 between a bottom wall 72, a top wall 73 and circular or rectangularly disposed side walls 74.
  • the bottom wall 72 is formed with a generally centrally disposed opening 75.
  • Disposed centrally within this chamber 71 is a small insulated vaporization chamber 76 defined by a cylindrical member 77 formed of a rigid polymeric foam material.
  • the lower portion of the member 77 is cone or chute shaped and converges to extend through the opening in the bottom wall 72 and has a bottom opening 78.
  • the interior of the chamber 76 communicates with the inside of a removable deposit receptacle or common glass jar 80 threadably supported in a suitable cap or interiorly threaded flange 81 depending from the bottom of the wall 72.
  • a small fluid passage 82 having a one-way valve (ball valve) 83 permitting liquid from the storage reservoir 71 to flow into the receptacle 80 and hence through the lower opening 78 of the member 77 into the vaporization chamber 76.
  • the ball is buoyant to rise into and seal the passageway 82 to prevent hot water from returning to the storage chamber or into the sediment receptacle 80. The location provided for this valve keeps it out of contact with the hot water so it is not subjected to scale collecting thereon to alter its operation.
  • an immersion heating element 84 formed of a sealed electrical resistor in a sheath coated with 'polytetrafluoroethylene to restrict any scale collection and to be self-cleaning.
  • a thermostatic switch is positioned ne'ar the heating element to preventoverheating should the level of the water drop below the upper portion of the heating coil of the heater 84.
  • the heater 84 may be a.
  • a squirrel-cage blower 85 Positioned directly above the top wall 73 of the storage chamber 71 is a squirrel-cage blower 85 driven by an electric motor and having an inlet area 86 thereto positioned directly above an opening 88 formed in the plate 73.
  • the blades of the blower 85 will serve to draw vapor and air from the vaporization chamber 76 into the squirrel-cage blower and exhaust the same through an exit port 90 into the plenum of the heating unit or into the room if used in a room humidifier.
  • Air is drawn into the upper portion of the storage reservoir 71 above the normal level of the liquid within the storage reservoir 71 through an opening 91 which may have a regulated variable closure.
  • the opening 91 can communicate with the plenum'of the heating unit to allow warm air to be drawn into and over the vaporization chamber 76 and out through the squirrel-cage blower back into the hot air plenum where this clean mixture of air and steam is placed into the heating air to aid in heating, lessen the dust, and
  • Liquid may be piped or otherwise made available to the vaporizer-humidifier 69 and the control of the liquid into the storage reservoir should be handled through an automatic float control valve 92 as illustrated, which when the water gets below a predetermined level, will open, tending to allow the liquid to fill the storage reservoir 71 back to a predetermined level automatically.
  • a manual valve 93 is also positioned in the supply line to shut off the source of water for servicing the apparatus.
  • the heating element 84 and blower motor are operated through a humidistat.
  • the heating element in a unit of this type is preferably rated at about.750 to 1,500 watts and operates upon such a small amount of water at a slightly reduced pressure that it is substantially instantaneously brought to a boiling temperature.
  • the heating member could have a variable wattage rating and a control which directly governs or regulates the amount of humidity generated.
  • the steam is picked up by air drawn through the opening 91 and is drawn therewith through the opening 88 into the squirrel-cage blower 85.
  • This unit 69 also permits the vapor that is placed into the air to be free of the normal minerals, al-- lergens and germs in tap water.
  • the jar or receptacle 80 performs a function in defining the liquidpath into the chamber 76.
  • the jar 80 also collects the minerals etc. which are purged from the water and fall through the opening 78 in the funnel-like bottom of the vaporization chamber to eventually settle in the bottom of the receptacle 80.
  • unit 69 is cleaned of this foreign material by removing and rinsing the jar 80. This is done by shutting off the water 1 supply, draining the storage chamber 71' and removing a the'jar.
  • a drain for the storage chamber 71 may be in the plate 72 or even in the bottom of the jar 80 as illustrated at 95.
  • the foam materialforming the vaporization chambers may be a polystyrene or polyurethane foam with at least the interior surfaces coated with polytetrafluoroethylene or an epoxy resin coating, to provide a selfcleaning, i.e., scale resistant vaporization chamber, and will protect the foam, particularly the polyurethane foam from damage by the boiling water.
  • a damper not shown may be placed in the discharge side of the fan 85 in the exit passage 94 or in the cap 24 to communicate with passage 27.
  • the damper will be biased to 'a normally closed position such that upon an increase in pressure in these areas above'the normal, the damper will open to relieve the pressure and prevent damage to the unit.
  • a similar air intake damper could be provided near the reservoirs 13 and/or 71 to open upon a drop in pressureshould the intake openings be completely closed.
  • a vaporizer-humidifier for delivering moist warm air at the desired temperature comprising base means defining a storage chamber for storing a supply of liquid, 'a cover on said base means,
  • 8- 7 means defining an insulated vaporization chamber including wall means secured to said cover and positioned within said storage chamber, said vapor-' ization chamber having upper and lower portions positioned respectively above and below the aver-' age liquid level in the storage chamber and said lower portion being in abutting mating engagement with said base means, said base means closing the -lower portion of said vaporization chamber, said upper portion-having means defining air passages,
  • liquid passage means affording the gravitational movement of liquid from said storage chamber to said vaporization chamber
  • valve means in said liquid passage means for restricting liquid from flowing from said vaporization chamber to said storage chamber so hotliquid will not move into said storage chamber
  • heating means disposed within said vaporization chamber adjacent said lower portion of said vaporization chamber for converting theliquid to vapor
  • thermocontrol switch to prevent overheating of the heating means by 'a significant amount above the boiling temperature of water.
  • a portable vaporizer-humidifier comprising a base having a bottom wall and a side wall formed to hold a supply of water and having a disc centrally positioned on said bottom wall to form the bottom of a vaporization chamber,
  • a cover said cover fitting over said base and comprising a hollow tubular member secured at one end to the underside of the cover-and formed tovhave' the other end mating with said disc to form an isolated vaporization chamber within'said base communicating through passage means with air and water in said base, heating means positioned in said tubular fluoroethylene.
  • a portable vaporizer-humidifier according to I claim 7 wherein said tubular member and said disc are formed of insulative material andpassage means are formed to permit water in said base to flow only from said supply in said base into said vaporization chamber when said cover is in place on said base and said tubular member and disc form the vaporization chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Humidification (AREA)
US00832279A 1969-06-11 1969-06-11 Vaporizer-humidifier Expired - Lifetime US3809374A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00832279A US3809374A (en) 1969-06-11 1969-06-11 Vaporizer-humidifier
CA085146A CA926909A (en) 1969-06-11 1970-06-10 Vaporizer-humidifier
JP45049550A JPS5212498B1 (de) 1969-06-11 1970-06-10
CH875570A CH536984A (de) 1969-06-11 1970-06-10 Verdampfer-Befeuchter
GB2820170A GB1308246A (en) 1969-06-11 1970-06-10 Vaporizer-humidifier
DE19702029472 DE2029472A1 (de) 1969-06-11 1970-06-10 Verdampfer-Befeuchter
US402288A US3873806A (en) 1969-06-11 1973-10-01 Vaporizer-humidifier
US05/444,337 US4028526A (en) 1969-06-11 1974-02-21 Electrically grounded vaporizer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00832279A US3809374A (en) 1969-06-11 1969-06-11 Vaporizer-humidifier

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/444,337 Continuation-In-Part US4028526A (en) 1969-06-11 1974-02-21 Electrically grounded vaporizer structure

Publications (1)

Publication Number Publication Date
US3809374A true US3809374A (en) 1974-05-07

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Application Number Title Priority Date Filing Date
US00832279A Expired - Lifetime US3809374A (en) 1969-06-11 1969-06-11 Vaporizer-humidifier

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US (1) US3809374A (de)
JP (1) JPS5212498B1 (de)
CA (1) CA926909A (de)
CH (1) CH536984A (de)
DE (1) DE2029472A1 (de)
GB (1) GB1308246A (de)

Cited By (30)

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US4155001A (en) * 1974-02-21 1979-05-15 Schossow George W Electrode-type vaporizer
US4532088A (en) * 1983-05-19 1985-07-30 Inspiron Corporation Heated respiratory therapy humidifier
GB2192136A (en) * 1986-07-04 1988-01-06 Virotherm Lab Ltd Humidifiers for inhalers
US4897525A (en) * 1987-03-13 1990-01-30 Paul Hirsch Device for heating food with steam
US4921642A (en) * 1987-12-03 1990-05-01 Puritan-Bennett Corporation Humidifier module for use in a gas humidification assembly
US4939343A (en) * 1987-10-01 1990-07-03 Arnold Josef B Steam generator for steam baths
US5067169A (en) * 1990-08-01 1991-11-19 Duracraft Corporation Portable humidifier
US5309930A (en) * 1992-07-02 1994-05-10 Celeste Company, Inc. Curler steamer
WO1996021347A1 (en) * 1995-01-13 1996-07-18 Sunbeam Products, Inc. Phosphorescent humidifiers and vaporizers
US5761378A (en) * 1995-04-13 1998-06-02 Helen Of Troy Limited Hair curler steamer with PTC heater and thermally isolated cold and hot water reservoirs
US5940578A (en) * 1997-06-17 1999-08-17 Yen Enterprises Pty Ltd. Water evaporation apparatus
US5970211A (en) * 1996-08-09 1999-10-19 Honeywell Inc. Portable vaporizer with cooling chamber
US6067403A (en) * 1997-05-06 2000-05-23 Imetec, S.P.A. Household electrical steam generator with stabilized boiler water level, particularly for smoothing irons
US20020072700A1 (en) * 2000-06-30 2002-06-13 Mantell Robert R. Method and apparatus for humidification and warming of air
US20050160635A1 (en) * 2004-01-23 2005-07-28 Mitco International Ltd. Steam iron
US20060291828A1 (en) * 2003-09-10 2006-12-28 Tetsuya Kadoma Vapor production device and cooker with the same
US20070257386A1 (en) * 2006-05-03 2007-11-08 Cherif Menassa Steam humidifier
US20080050103A1 (en) * 2006-08-08 2008-02-28 Cheng Ping Lin Humidification apparatus
US20090103904A1 (en) * 2007-10-18 2009-04-23 Honeywell International, Inc. Water level sensor for steam humidifier
US20090283923A1 (en) * 2008-05-14 2009-11-19 Ray King Humidifier system
US20090293557A1 (en) * 2005-08-29 2009-12-03 Lg Electronics, Inc Steam Generator and Washing Machine Having the Same
US8211052B1 (en) 2006-07-13 2012-07-03 Lexion Medical Llc Charged hydrator
US20130042768A1 (en) * 2010-04-28 2013-02-21 Sharp Kabushiki Kaisha Cooking device
US20140109905A1 (en) * 2011-08-19 2014-04-24 Japan Tobacco Inc. Aerosol inhalator
US20150030317A1 (en) * 2012-03-15 2015-01-29 Resmed Limited Heating apparatus
US9822990B2 (en) 2013-07-19 2017-11-21 Honeywell International Inc. Methods, systems, and devices for humidifying
USD894371S1 (en) 2019-03-01 2020-08-25 Guardian Technologies Llc Mist inhaler
US10900680B2 (en) 2013-07-19 2021-01-26 Ademco Inc. Humidifier system
US11085656B2 (en) 2017-02-24 2021-08-10 Ademco Inc. Configurable electrode humidifier allowing for various injects
US11786691B2 (en) 2007-06-05 2023-10-17 ResMed Pty Ltd Electrical heater with particular application to humidification and fluid warming

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029511A1 (de) * 1990-09-18 1992-03-19 Ego Elektro Blanc & Fischer Medienerhitzer, insbesondere dampferzeuger
US10899393B2 (en) * 2017-03-14 2021-01-26 Honda Motor Co., Ltd. Rear body structure

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US1953794A (en) * 1932-09-22 1934-04-03 John G Zummach Humidifier
US2140516A (en) * 1936-10-15 1938-12-20 Cowan Harry Electrical steam generator
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Also Published As

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JPS5212498B1 (de) 1977-04-07
DE2029472A1 (de) 1970-12-17
CH536984A (de) 1973-05-15
CA926909A (en) 1973-05-22
GB1308246A (en) 1973-02-21

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