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Publication numberUS2359057 A
Publication typeGrant
Publication dateSep 26, 1944
Filing dateFeb 28, 1942
Priority dateOct 13, 1941
Publication numberUS 2359057 A, US 2359057A, US-A-2359057, US2359057 A, US2359057A
InventorsDonald Skinner George
Original AssigneeDonald Skinner George
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Heating and ventilating system
US 2359057 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 26, 1944.


Patented Sept. 26, 1944 NT OFFICE HEATING ANDVENTILATI NG SYSTEM George DonaldSkinner, London, England Application Februar 28, 1942, Serial No. 432,899

H In Great Britain October 13, 1941 4 Claims. (01. 250-43) This invention relates to heating and ventilating systems and more particularly to heating and air conditioning units adapted to be mounted on the fac of a wall or suspended from roof or ceiling members of a building.

Such units although they comprise heating elements, are usable in warm Weather without the heating elements being in operation so as to provide a beneficial circulation of cooling air.

The primary object of the present invention is to provide a convenient unit of this general character which in addition to the normal function of merely circulating the air, heated or not, has incorporated in it means for sterilising the air so circulated from harmful bacteria.

According to the invention this sterilisation of the circulated air is eiTected by subjecting the air in its passage through the unit to the effects of ultra-violet radiation which can conveniently be efiected by means of suitable electric discharge lamps.

The invention may therefore be said to consist in its broadest aspect of an air conditioning unit comprising a casing having inlet and outlet openings for permitting the passage of air through the casing, a fan for circulating the air through the casing, a heating element, and means for generating and radiating ultra-violet rays positioned so that the circulated air is subjected to the effect of the rays.

The invention further comprises the employment of electric discharge lamps as the means for generating the ultra-violet rays and the use of the windings of an electric motor used to drive the fan to control the electric discharge lamps whereby the use of the inductive chokes usually employed for this purpose is eliminated.

In the preferred practical application of the invention a three-phase fan motor is employed each of the three windings of which is used to control an electric discharge lamp. If desired an ozoniser of known construction and operation may be incorporated in the unit.

An embodiment of the invention is shown in the accompanying drawing, wherein Figure 1 is a perspective outside elevation of the improved unit,

Figure 2 is a diagrammatic sectional view thereof, and

Figure 3 is a diagram of the electrical connections.

Referring to the drawing, the numeral l indicates a casing with a front louvred opening 2, behind which is an electric heater 3. Centrally across the interior of the casing are mounted three electric discharge lamps 4 provided with suitable transparent envelopes capable of passinga wave length of 2537 Angstrom units radiation, and at the back of the casing is the circulating fan 5 driven by a three phase motor 6.

The casing I may be mounted on a wall by a surrounding flange 7 integral with the back wall of the casing, and as shown in Figure 1 screening or baille plates 8 may be attached to the side walls of the casing I to assist in directing the flow of discharged air.

The electrical connections for the motor 6 and heating element 3 described above are illustrated by Figure 3 in which 9 indicates the supply mains connected to the three phase motor windings ID. This motor operates as a pilot motor off a single phase circuit. The heater is tapped off from the mains 9 at H likewise an ozoniser, if employed, is tapped oiT as indicated by the dotted lines at l2. The three lamps are connected to leads l3, l4 and I5 and a condenser l6 as shown. Where a three-phase supply is available a standard three phase motor can be used, in which case a lamp would be connected in each phase of the motor windings.

Although the heating element employed is indicated as an electrical heater it is to be understood that a heater of any form may be employed.

As is well known to those skilled in the art, the efllciency of the sterilizing action of such lamps on air-borne bacteria is highest when the lamps ar maintained at about F. It is therefore important, with the present apparatus, to locate the lamp in suitable positions in the heater casing where this temperature will be attained or most nearly approximated. In cases where the lamps are subject to the cooling effects of an air stream and the heating effects from a heating element, screening means will be required to ensure the maintenance of a satisfactory working temperature. For example in the arrangement shown in Figure 2 deflectors or screens are arranged to efiect this screening of the upper and lower lamps while deflectors or screens I6 may be arranged on each side of the central lamp, the deflector on one side protecting the lamp from the effects of the air stream from the fan 5 and that on the other side protecting the lamp from the effects of the heater 3. The upper and lower of the lamps 4 may need to be shielded by screens such as IT.

It will be understood that the utilisation of the fan motor windings as ballasts for the control of the discharge lamps is not dependent upon borne bacteria.

the use of a three-phase main supply, and is merely a question of selecting the type of electric motor to suit the mains supply and the number of discharge lamps needed in a unit.

If desired, an air filter indicated at l8 may be incorporated with the apparatus, consisting, for example, of fabric treated with an oily or adhesive medium arranged over the inlet openings to the casing I, which will be capable of removing not only the larger particles of dirt in the circulated air, but also the larger sizes of air- The filtered air is then subjected to the ultra-violet radiation, which will be capable of destroying the smaller bacteria thatit is not possible to trap by the filter.

It will be appreciated that, by suitable spac I quiet about the lamps ing of the combined heating, ventilating and sterilizing units, the whole of the floor area of a room or building may be efiectively provided with a continuous supply of tempered and sterilized air which, whilst providing any desired degree of heating or cooling to suit the occupation of the people in the room or building, will also greatly minimise the risk of infection and passin the casing is subjected, and screening devices about the lamps to baffle the air and keep it and avoid chilling the lamps below their proper operating temperature.

- '2. An air conditioning unit according to claim 1, wherein the outlet opening from the unit is provided with louvers for directing the air on its disoharge.-

3. An air conditioning unit according to claim l, having a filter in the inlet opening.

'4. An air conditioning unit according to claim 1, having aheating element located withinthe casing adjacent the outlet opening;


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2528969 *Mar 7, 1945Nov 7, 1950Michael Reese Res FoundationLamp
US2553711 *Mar 11, 1949May 22, 1951Jackson Raymond BPortable sterilizing apparatus
US2564157 *Jun 12, 1947Aug 14, 1951Hrant EknayanElectric heating system and method of heating
US2638644 *Oct 25, 1947May 19, 1953John R RauhutAir-conditioning and humidifying apparatus
US2681061 *Nov 13, 1952Jun 15, 1954Louis B ModellHealth lamp
US2683798 *May 9, 1951Jul 13, 1954Frederick E CraigThree-phase fluorescent lighting system
US2723616 *Oct 15, 1951Nov 15, 1955American Air Filter CoVentilating and heating apparatus
US2737695 *Mar 17, 1952Mar 13, 1956Sokolik EdwardGermicidal bed apparatus for bedridden patients
US2750536 *Jan 8, 1951Jun 12, 1956Ets Claude Paz & SilvaSystem for energizing an electric discharge tube
US2754554 *Apr 4, 1952Jul 17, 1956John Mills TerenceGermicidal deodorizer
US3518046 *Sep 16, 1968Jun 30, 1970Cicirello Daniel JMethod and apparatus for the destruction of airborne microorganisms within a room
US3634025 *Nov 20, 1969Jan 11, 1972Landry AlfredWater sterilizer
US3708963 *Sep 8, 1970Jan 9, 1973W BoonstraAssembly for separating a substantially dust-free part from a space
US3744216 *Aug 7, 1970Jul 10, 1973Environmental TechnologyAir purifier
US4889543 *Dec 8, 1988Dec 26, 1989Burt Jerry DAir filtering system
US6709484Aug 8, 2001Mar 23, 2004Sharper Image CorporationElectrode self-cleaning mechanism for electro-kinetic air transporter conditioner devices
US6713026Dec 5, 2000Mar 30, 2004Sharper Image CorporationElectro-kinetic air transporter-conditioner
US6749667Oct 21, 2002Jun 15, 2004Sharper Image CorporationElectrode self-cleaning mechanism for electro-kinetic air transporter-conditioner devices
US6849107 *Dec 16, 2002Feb 1, 2005Fred HuffmanAir filtration system
US6896853Sep 9, 2003May 24, 2005Sharper Image CorporationPersonal electro-kinetic air transporter-conditioner
US6908501Apr 30, 2004Jun 21, 2005Sharper Image CorporationElectrode self-cleaning mechanism for air conditioner devices
US6911186Feb 12, 2002Jun 28, 2005Sharper Image CorporationElectro-kinetic air transporter and conditioner device with enhanced housing configuration and enhanced anti-microorganism capability
US6953556Mar 30, 2004Oct 11, 2005Sharper Image CorporationAir conditioner devices
US6972057Mar 22, 2004Dec 6, 2005Sharper Image CorporationElectrode cleaning for air conditioner devices
US6974560Feb 12, 2002Dec 13, 2005Sharper Image CorporationElectro-kinetic air transporter and conditioner device with enhanced anti-microorganism capability
US6984987Jul 23, 2003Jan 10, 2006Sharper Image CorporationElectro-kinetic air transporter and conditioner devices with enhanced arching detection and suppression features
US7056370Mar 23, 2005Jun 6, 2006Sharper Image CorporationElectrode self-cleaning mechanism for air conditioner devices
US7077890Feb 9, 2004Jul 18, 2006Sharper Image CorporationElectrostatic precipitators with insulated driver electrodes
US7097695Sep 12, 2003Aug 29, 2006Sharper Image CorporationIon emitting air-conditioning devices with electrode cleaning features
US7220295Apr 12, 2004May 22, 2007Sharper Image CorporationElectrode self-cleaning mechanisms with anti-arc guard for electro-kinetic air transporter-conditioner devices
US7285155Mar 28, 2005Oct 23, 2007Taylor Charles EAir conditioner device with enhanced ion output production features
US7291207Dec 8, 2004Nov 6, 2007Sharper Image CorporationAir treatment apparatus with attachable grill
US7311762Jul 25, 2005Dec 25, 2007Sharper Image CorporationAir conditioner device with a removable driver electrode
US7318856Dec 3, 2004Jan 15, 2008Sharper Image CorporationAir treatment apparatus having an electrode extending along an axis which is substantially perpendicular to an air flow path
US7371354Sep 15, 2003May 13, 2008Sharper Image CorporationTreatment apparatus operable to adjust output based on variations in incoming voltage
US7404935Oct 14, 2003Jul 29, 2008Sharper Image CorpAir treatment apparatus having an electrode cleaning element
US7405672Mar 25, 2004Jul 29, 2008Sharper Image Corp.Air treatment device having a sensor
US7517503Mar 2, 2004Apr 14, 2009Sharper Image Acquisition LlcElectro-kinetic air transporter and conditioner devices including pin-ring electrode configurations with driver electrode
US7517504Mar 8, 2004Apr 14, 2009Taylor Charles EAir transporter-conditioner device with tubular electrode configurations
US7517505Dec 8, 2004Apr 14, 2009Sharper Image Acquisition LlcElectro-kinetic air transporter and conditioner devices with 3/2 configuration having driver electrodes
US7638104Dec 3, 2004Dec 29, 2009Sharper Image Acquisition LlcAir conditioner device including pin-ring electrode configurations with driver electrode
US7662348Jun 10, 2005Feb 16, 2010Sharper Image Acquistion LLCAir conditioner devices
US7695690Feb 12, 2002Apr 13, 2010Tessera, Inc.Air treatment apparatus having multiple downstream electrodes
US7724492Jul 20, 2007May 25, 2010Tessera, Inc.Emitter electrode having a strip shape
US7767165Mar 3, 2005Aug 3, 2010Sharper Image Acquisition LlcPersonal electro-kinetic air transporter-conditioner
US7767169Nov 22, 2004Aug 3, 2010Sharper Image Acquisition LlcElectro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds
US7833322Feb 27, 2007Nov 16, 2010Sharper Image Acquisition LlcAir treatment apparatus having a voltage control device responsive to current sensing
US7897118Dec 8, 2004Mar 1, 2011Sharper Image Acquisition LlcAir conditioner device with removable driver electrodes
US7906080Mar 30, 2007Mar 15, 2011Sharper Image Acquisition LlcAir treatment apparatus having a liquid holder and a bipolar ionization device
US7959869May 9, 2003Jun 14, 2011Sharper Image Acquisition LlcAir treatment apparatus with a circuit operable to sense arcing
US7976615Mar 12, 2010Jul 12, 2011Tessera, Inc.Electro-kinetic air mover with upstream focus electrode surfaces
US8043573Feb 8, 2010Oct 25, 2011Tessera, Inc.Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member
US8425658May 20, 2011Apr 23, 2013Tessera, Inc.Electrode cleaning in an electro-kinetic air mover
USRE41812Jan 21, 2005Oct 12, 2010Sharper Image Acquisition LlcElectro-kinetic air transporter-conditioner
DE1264722B *Feb 5, 1963Mar 28, 1968Bauknecht Gmbh GVerfahren zur Herstellung eines wohltuenden und gesundheitsfoerdernden Ionenklimas und Einrichtung zur Durchfuehrung des Verfahrens
DE1299388B *Feb 2, 1965Jul 17, 1969Sterling Eng Co LtdElektrischer Wand-Heizluefter
U.S. Classification96/224, 362/248, 126/299.00R, 315/291, 307/149, 250/435, 315/137, 416/95, 55/467, 315/112, 315/289
International ClassificationA61L2/10
Cooperative ClassificationA61L2/10
European ClassificationA61L2/10