US1714562A - Ventilating system - Google Patents

Description

May 28, 1929. w KE|SER VENTILATING SYSTEM Fil ed March 14, 1925 WALTER- KEISER,

I Patented May 28, 1929.

UNITED smrlzs .PATENTYOFNFICE.

WALTER KEISER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE AIR CONDITIONING AND ENGINEERING 00., OFLST. LOUIS, MISSOURI, A. CORPORATION.

VENTIIiATINg' SYSTEM.

Applicationfiled March 14,1925. Serial No. 15,560.

2 My invention relates to improvements in ventilating systems. and more particularly to those which are arranged to recirculate air and adapted to employ an air purifying agent. j

It is well known that when air is drawn from occupied areas and recirculated that the odors and other deleterious matters which are present are not only obnoxious, but also .10 harmful, and that, in present ventilatingpractice, it is common to use ozone as the agent with which to make this recirculated A further object is to provide 'a means where-' by the ozone generator is' not dependenton any human agencyto put it in operation, but may be automatically started and put in operation by the flow or pressure of recirculated air in the system.

My improvements consist in the novel construction, combination, and arrangement of arts hereinafter fully, clearly, and concisely described, definitely pointed out in my claims and illustrated by the accompanying drawing which is a diagrammatical illustration of a portion of a budding equipped with a typical recirculating system.

For-the purpose 'of illustrating my invention, I have' shown. in the accompanying .drawin one form thereof which is at present p're erred by 'me,ince the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which myinvention consists can be variously arranged and oragnized and that my invention is'not limited to the precise arrangement and organization of these instrumentalities r as herein shown and described.

1 is a ventilating fan whichimay be driven by a motor 2 which has any usual starting and stopping means such as the switch 2 connected to the wires, 2". 3 is'an ozone generator. The. fan and generator are referably in a chamber such as A, whic -may the ozone generator.

have a heater 4, preferably .positioned in one wall, through which air. is admitted for introduction into the system-and building. 5 is a duct which conveys air-from the fan into a room of the building, such as B, through suitable ducts and openings such as 6 and 7, respectively. 8 is a vent opening through which air is exhausted from the room B through the ducts 9 and 10. These ducts communicate with a return duct or .vent shaft 11 through the opening 12. Communication to the return duct may be cut ofl, when desider, by a suitably located damper 13. By preference, I also provide a ventilator 14 equipped with a damper 15, located at some suitable portion of the buildingi throughwhich airmay"be expelled from the building. 16 is an opening for admitting outside air and may be equipped with adjustable dampers 17. 18 is anair operated switch of'ai y suitable design, This switch, which has a balanced air vane 19, is placed in an easily accessible place in any of the ducts orair passages through which recirculated air flows and is actuated or operated by the force or pressure of the moving air against the vane. The movement of this vane opens or closes the electric circuit between the-switch and In this connection I do not wish to be understood as limiting myself to the precise form of switch shown or described, as it is obvious that I may employ any form ortype of air-actuated switch which is adapted to respond to the flow of ail-ordinarily set up in the ducts orpassages of a ventilating system. 20 and 21 are wires supplying electric current to the switch and the ozone generator. I W

- The operation of my invention lows: a When it is desired to recirculate the air in is as folthe building, the damper 15. in the ventilator 14 is closed, thus preventing the expulsion of the air to the atmosphere. In this case the damper 13 isopened so that the air can be drawn from the duct 10 into the return duct 11 and thus recirculated. The damper 17 I may be closed entirely for. complete-recirculation or partly opened for partial recirculation. The motor 2 causes the fan -1 to operate,

resulting in a circulation of air through ducts, 5, 6, 9, 10 and .11, chamber A and room the ozone generator. The air drawn through the duct 11, together with such air as may be admitted through the outside opening 16, passes through the heating coils 4 and into chamber A where ozone is being produced in suitable quantities for purification purposes. The purified air then pass s through the fan 1 and into duct 5, where it is'carried through the system, being discharged into a room or rooms B, in its course of recirculation. When the fan is stopped, movement of air through the duct 11 ceases,-thereby releasing the pressure or force against the vane and allowing it to return to closed position; this breaks the supply circuit to the ozone generator and thus shuts it ofi. Y

I claim; g

1. A ventilating system having an ozone generator and means adapted to employ moving air to put the ozone generator into operation and stop the ozone generator when air movement ceases.

2 In a ventilating system adapted to recirculate air, means for electrically treating air, and means adapted to employ moving air to bring said air-treating means into operation only while recirculation is in progress.

3. In a ventilating system a fan, air passages, means for electrically treating air, and means adapted to be actuated by the movement of air to secure operation of the air treating means. 1

4. In a recirculating ventilating system a fan, air passages, an ozone generator, and means adapted to be actuate" by the movement of air to secure automatic operation of the ozone generator only when air, is recirculated through the system.

5., In a recirculating ventilating system adaptedto. employ ozone, air actuated means adapated ,to control the introduction of ozone into the system only when recirculation occurs. H I

6,. A recirculating ventilating system comprising means adapted'to generate and introduce ozone, means adapted to recirculate air,

and means whereby recirculated air causes 9. In a recirculating ventilating system,-

ducts, means for producing a flow of air through. said ducts, an ozone generator having an electric supply circuit connected therewith and means .for causing the said flow of air to close the electric supply circuit to said ozone generator.

10. A recirculating ventilating system comprising a fan, ducts, an electric switch, an ozone generator, and means whereby the re circulated air'is employed to actuate the switch and supply electric current to said ozone generator while the recirculated air moves through said ducts and cut off said electric current when the movement of said air ceases.

11. A recirculating ventilating system comprising the combination of a fan, air

passages, an ozone generator, means for restricting and directing the flow of air through saidpassages, means for admitting outside air, means for exhausting air to the atmosphere, an electric switch connected with the ozone generator and means connected with said switch whereby said switch is actuated by the force of the air moving through an air passage.

WALTER KEISER.

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