US1421939A - Air heater - Google Patents

Description

Patnted July 4,' w22 INVENTOR a ww M M Y E Si HCE.

-MICHAEL ACHALACHTI, OF N EW YORK, N. Y., ASSIGNOR OF ONE-FOURTH TO GEORGE L. LIVINGSTON AND ONE- YORK, N. Y.

FOURTH TO ABRAHAM OKU'N,4 OF NEW AIR HEATER.

Fatented July a, i922.

Application leid October l1, 1918. Serial No. 257,723.

T all whom t may concerne.

Be it known that I, MICHAEL HAGHA- LACHTI, a citizen of Finland, residing in the city of New York, borough' of Manhattan, county andv State of New York, have invented a certain new and useful Air Heater, of which the following is a speciication.

This invention is a heater adapted to directly heat substantially all the air of dwelling and work rooms and similar quarters. The source of heat may be gas, oil, electricity, steam or other suitable heating agent or agents.

The well known gas, oil, steam and electric heaters usually heat by radiation. That is to say, a heat conducting body of metal or equivalent material, is heated to a certain temperature, generally considerably above that of the average temperature of the room or other place in which the heater is located, and such heated metal or other material primarily imparts a relatively high temperature to the immediately associated air, which, in'turn, as a secondary effect, heats a further body of adjoining air, etc. There is little or no attempt to secure a circulation of air, whereby a relatively large body of air, to be hea-ted, is continuously brought into contact, or substantial contact, with the original source of heat. Usually the circulation is only incidental, and, in the case of gas, oil and similar direct acting heaters, usually only suilicient air is mixed with the burning oil or gas, or products of combustion, to assure complete combustion.

As the specific heat of air varies, the higher the temperature the higher the speciiic heat, it follows that to heat a given mass or strata of air, adjoining a heater, to a relatively high temperature and, particularly, when no provision is made for circulating the air, is a slow, inehicient method of heating, room or other chamber with anything like the desired uniformity.

The present invention, overcomes the disadvantages adverted to, and others, in that it embodies a simple and eflicient structure for economically heating a large body of air, automatically kept in circulation, and without unduly raising the temperature of any part of the heater or therimmediately associated strata or body of air.

Speaking generally, the invention, from a structural standpoint, embodies a heater of and, moreover, does not heat av any suitable type, in combination with a superimposed structure divided into a plurality of flues or tubes, preferably a relatively large number, through which the products of combustion (if a gas or oil stove or burner is employed as the source of heat) and a large quantity of air are passed upwardly or circulated, the lines or tubes serving to break up the air, (and mixed products of combustion) into a relatively large number of comparatively small columns, thereby precluding eddying or confusion of the heated currents, and thus contributing to effective circulation.

Features of the invention, other than those specified, will be apparent from the hereinafter detailed description taken in conjunction with the accompanying drawing.

In the accompanying drawing, l have illustrated one practical form of the invention, but the construction shown therein is to be understood as illustrative, only, and not as defining the limits of the invention.

Figure l shows the heater in elevation, with a part of the external casing broken away; and

Figure 2 is a view on line 2-2 of Figure l, looking in the direction of the arrows, showing, more particularly, the interior construction of the air heating chamber.

Referring to the drawing, 1 is the air chamber, preferably shaped as shown, having an expanded base 2 and double truncated top or dome 3 which may be provided with a cover 4. In the form shown, the air chamber is provided with vertical radial partitions 5, which may be held in place, properly spaced, by means of a centrally positioned upright post 6, provided with collars 6 having vertical radial grooves 7, into which the inner edges of the partitions 5 are sea-ted. In this manner a plurality of upright iiues 8 are formed between the partitions. Only one collar 6 is shown in the drawing but it will be understood that at least one additional collar is mounted on the post 6 within the upper portion of the casing which is not shown as broken away.

The dome of the air chamber is provided with suitable perforations 9 forming hot air exits, and the base of the air chamber is provided with suitable cold air inlets 10.

Positioned in the base 2 of the air chamber is any suitable oil or gas burner 11, or other source of heat, such as an electric heater or steam coil. In the specific form shown, the burner 11 is a gas burner, having a gas supply pipe 12, provided with gas regulating `cock 13 andair mixing chamber 14, all or' which elements are common to well known gas burners.

In the interest of economical construction, the chamber 1 and partitions 5, are preferably made of sheet metal, although, if desired, the entire structure may be cast or otherwise constructed.

From the foregoing description, the operation of the a'ir heater will be readily understood, but it may be described briefly as follows:

Burner 11 having been ignited it causes cold air, by suction, to enter the base 2 of chamber 1 through air inlets 10, whereupon said air becomes mixed with the products of combustion from'the burner and thus heated, whence the mixture passes upwardly through the vertical flues 8, formed between the partitions 5, and inds exit at the top of the air chamber through the perforations 9. These iues being relatively small and numerous, preclude any eddying of the rising columns of heated air, or heated air mixed with the products of combustion, and this mode of operation forms the principal feature of the invention. Y

The super-structure described, embodying the air chamber provided with the vertical grooves, cold air inlet and warm air exit may` be Constructed separately, i. e., as a unit, and used in conjunction with any well known form of heater, by simply juxtaposing it in relation thereto.

It will be understood that slight changes portable structure herein illustrated and de- Y scribed. Y

That I claim as new and desire to secure by Letters vPatent is: i

A gas heater of the class described embodying a substantially frusto conical casingV inverted so that its wall diverges upwardly, a chambered base positioned subjacent the casing and Jforming a combustion.

chamber, a perforated cover for said casing and an upright post extending vertically through the heater, in combination with radially extending partitions positioned longitudinally of the interior of the casing to divide said interior into a plurality of upwardly extending circulating passages segmental in cross section and divergin in an upward direction, means carried by t e post for spacing the partitions and a gas burner positioned in the combustion chamber, whereby all Vthe air passing through the chamber is mixed with the products of combustion and circulates upwardly through the diverging passages to be dispersed 'th rough the perforations of the cover.

In testimony whereof, I have signed my name to this specification.

MICHAEL imonamiorrri.V

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