US899289A - Apparatus for purifying and humidifying air. - Google Patents

Description

W. G. R. BRAEMER. APPARATUS FOR 'PURIFYING AND HUMIDIFYING AIR.

APPLIUATlON FILED OUT. 15, 1907.

Patented Sept. 22, 1908.

35 a given .volume of air, irrespective of t ter of the washer is mvrrnn STATES PATENT ()FFICE.

WILLIAM G. R. BRAEMER, OF BUFFALO, NEW YORK, ASSIGNOR TO \VARREN WEBSTER & COM- PANY, A CORPORATION OF JERSEY.

' APPARATUS FOR PURIFYING AND Humnrrvme AIR.

5 Im rovement Apparatus for Purifying an Humidifying Air, of which the following is a specification.

My invention hasreference to apparatus for purifying and humidifying air, and con- 1 sists of certain Improvements which are fully set forth in the following specification, and

. shown in the accompanying drawings, which form a part thereof.

The object of my invention is'to automatically regulate the humidity of the air supply to the building or rooms therein irrespectlve of the variations in the external atmospheric conditions, whereby the air at a proper temperature and humidity may be supplied in 29 quantity where desired and unaiiected by the variations in the atmosphere outside of the building.

More specifically, 'my object is to provide means forajimparting a definite amount of humidity to air being supplied to a building toive to it an absolute or fixed humidity whfie varying the relative humidity and temerature of said air when assing into the building from the hunndiigring a paratus,

30-the change in relative humidity eing secured by varying the temperature of the air after it has been brought to an absolute or fixed humidity, so thata definite amount of moisture is conveyed intothe building1 with e variationsin temperature of the air'within the building. a s y invention consists in providing a washer and eliminator with means for sub- 40 jecting the air to aqueous vapor. pIlOI to its passing through the eliminator, or' after havmg passed through the eliminator, aspre ferred, and independent of-the washer or the temperatureof the water thereof, which latter may be maintained constant at a definite erature, and regulating the e aqueous vapor to vary the huhigh tern sion of t midity of the air controlled by asuitable humidiostat or other automatic device under 3 the action of the air in the-building or room onin the flues throu h which it passes. to reach its point of distribution. Thehot wa I given a temperature to be determined by test, and adapted to give slightly less absolute. humidity to the air Specification of Letters Patent. Application filed October 15, 1907. Serial No. 397,550.

'bined; Ordinarily,

Patented. Sept. 22, 1908. i

than required at the highest temperature of the air leaving the heating apparatus, the additional humidity required belng provided by steam or aqueous vapor jets above mentioned.

My invention also comprehends details of construction which, to ether with the features above specified,wilibe betterunderstood by reference to the drawings, in which Figure 1 is a sectional side elevation of anapgaratus for purifying and humidifying air; an Fig. 2 is a sectional plan view of the same.

A is the casing of the apparatus, and adj acent to its inlet side, it is provided with tempering steam coils B, by which the incoming air may be heated to the desired preliminary,

de ree. Immediately co" s are the usual bypermit more or less 0 the fres into the humidifying apparatus ing heated by the tempering coils B. In this manner, the mixture of the incoming air may be heated to substantially the desired degree before being subjected to the humidifyin treatment. The tempered air is purified an humidified by being made to pass through below the tempering air to pass one or more sheets of hot falling water from the spraying pipes D D, the sheets of hot falling water belng indicated in dotted linesin Fig. 1. The humidified air then passes through the eliminator Ew-hich removes the without beass dam ers C which excess of moisture, and thence passes through the chamber F to the blower G, from whence I it is driven through a flue P into the room or. compartment in which it is to be utilized.

he temperature of the waterfrom the spraying .pipesfD D imparts to the air a less humidlty than-re uired at the highest temperature of the air eaving the heatin a aratus' for delivery into the room, and the additional amount of humidity which is required to make thepredetermined absolute or fixed humidity to the air issu plied by means of the steam jets H H or H or both com one set of such jet pipes will suflice. The pipes H H are shown as 10- cated in the casing A'between the tempering coils B and the spraying pipes D, so that they implart to the incoming air not only a degree of umidity but also some increase in tem perature, and in that Way the air after passlng through the steamjets and the sheets of hot falling water from the spraying pipes is brought to the re uisiteabsolute humidity, and then passes through the eliminator to ing the room, and in which case it would have to be raised considerably in temperature because of the drop 1n temperature m transrt.

This increase in temperature to the'humi'di fied air may beproduced by means of a steam heater J; J, the former operating upon the humidified air before passing into theblower G and the latter operating upon 'it after it- -leaves theblower.

Either or both of these heaters may be employed as desired. More over, the means for heating the'air to raise its temperature and also its relative humidity, while maintainin its fixed or absolute humidity,'may be 0 the ordinary construction, similar to the tempering coils B with the bypass controlling devices 0, whereby the amount of heat imparted to the air may be easily regulated without varying the, steam in the steam coils.

In case there is any variation in the humidity imparted to the air such as to produce a variation in the relative humidity. of the heatedyair in the room when said air is supplied at afixed temperature, then the amount of humidity imparted to the air in the urifying'apparatus is regulated by contro ling the action of the steam jets H H, andthis is accomplished by the valves K K which are automatically operated by means of a hu midiostat or other automatic regulating apparatus L arranged in the room, 1n which'the air is delivered, or arranged in the pipe B, as indicated in dotted lines at L. By means of this humidiostat, the lowerin of the relative humidity in the room, while tie temperature remains fixed, will-cause it to operate throu h the connectionsM, so as to open the valves li K, or either of them, to a greater extent and ermit more steam to pass from the steam ets for the purpose of increasing the humidity 1n the air prior to its reaching the blower G. Should the humidity in the room increase above that required, then the reverse operation takes lace with a reduction of the steam jets and a owering of the humidity imparted to the air before reaching the blower.

The tempering coils B and the by-pass dampers C are preferably regulated automatically by means of a thermostat N, which may be arranged in the room to'be heated or which may be arranged in the casing A, as indicated at N, so as to maintain the incoming air mixture at a fixed temperature, It is, in most cases, preferable that the thermostat shall be in the casing A, and such thermostat will 0 erate through the devices 0 to regulate t e steam valve B of the tempering proper absolute humidity in the mined temperature of the room.

coils B and the devices 0 to regulate the bypass dampers C. Where the by-pass dampers O are employed, it is not essential to use the steam regulating valve B because the variation in temperature may be controlled within reasonab e limits by the dampers C, which are more rapid in inducing changes of temperature.

The water from the perforated pipes D falls in sheets of spray or like rain down into the tank I at the bottom, and the collected water taken from the air by the eliminator E is also delivered to this tank. The temperature of the water from the pipes D is maintained practically constant in any suitable manner, and this temperature is predetermined after deciding upon the maximum tem erature which is required to be given to the umidified air delivered to the room and should be such as to impart slightly less than the required humidity for the air. Of

course, 1t is evident that this fixed relative humidity which would be given by the'hot water from the pipes D might be considerably below that which is required, reliance being placedupon the steam ets H H to make up the deficiency in humidity to secure the purifying apparatus and the proper relative in theroom to be heated. I therefore do not restrict myself to any fixed amount of humidity to be given by the .pipes D and hot water therefrom, except that it shall be less than the maximum humidity required.

It is also evident that while the spraying,

pipes H H are designed for producing jets of steam, they may nevertheless .be employed to produce the jets-of intensely hot water, which water might be held under considerable pressure, so that the water spray would burst into'steam when projected into the casing A. The eliminator may be made in any suitable manner,

tion, Serial No. 392,251, filed Septem er 11,

ticular construction of eliminator, as this part of the device may be made in any conven'ient manner. i

The essential feature of my invention is in the combination of the means which impart less than the maximum humidity required with supplementing independent devices for supplying, under regulation, the additional amount of humidity required to-produce the absolute humidity necessary to secure the relative humidity required at the predeter- In-the 'o' eration ofthis a paratus, it will be observed that, assuming t can to be used at a certain temperature and relative humidity,vit becomes necessary to impart to ature' such, that when the air is raised to the final temperature for use, the moisture due that shown being simi' lar to the structure set out in my a plicathe air an absolute humidity and temper-,

umidity 1 vhot aqueous vapor to the current 0 tion.

to the absolute humidity will, with the rarefied air impart a relatively lower and constant relative humidity as compared withperatureunder these conditions will be that which is required for the building or room.

No claim 1s made in this application to the method of producin air of practically constantrelative humi ity hereln described, as the sameiis reserved for a separate applica- While I refer the construction shown as being excel ently ada ted for the purposes of my lnvention, the etails thereof may be modified without departing from the spirit of the invention.

Having now described my'invention, what I claim as new, and desire to secure by Letters Patent, is

1.. In an air purifying and humidifying apparatus, the combination of means for producing a current of air, means for supplying a thin body of hot water of substant1ally constant temperature through which the air passes, an eliminator for removing the excess of water from the air, and means for supply,- ing to the current ofair a hot aqueous vapor to raise the humidity of the air to the absolute humidity required. '1

2. In an air purifying and humidifying apparatus, the combination of means for producing a current of air, means for su lying 'a thin bodyof hot water of substantia y constant tem'perature th'rough which the, air

passes, an eliminator for removing theexcess of water from the air, means for supplying to the current of air a raise the humidity of theair to the absolute humidity required, and means automatically controlled by the condition of ered from the apparatus to vary the amount of aqueous vapor suppliedto the air, whereby the absolute humidity thereof may be maintained constant.

3. In an air purifying and humidifying apparatus, the combinatlon of means for proucing a current'of air, means for sup lying a thin body of'hot water of substantla 1 constant temperature through which t e air passes, an eliminatorfor removing the excess of water from the air, means for supplyin a air before it is treated to the thin body 'of hot water to raise the humidity of the air to the absolute humidity required, and means to regulate the admission of the aqueous va or to maintain the absolutehumiditylof t e air practically constant. a 4. In an. air purifying and humidifying apparatus, the combination of means for producing a current of air, means for sup lying a thin body ofhot water of substantia ly constant temperature through which the air passes, an eliminator for removing the excess hot aqueous vapor to the air deliv-' humidity" required, the

of water from the air, means for supplying a hot aqueous va or to the current of air to raise the humidity of the-air to the absolute humidity required, and means to impart preliminary heat to the air before being treated to the aqueous vapor and thin body of water.

5. In an air purifying and humidifying apparatus, the combination of means for producing a current of air, means for sup lying a thin body of hot water of substantia ly con-' stant temperature through which the air passes, an eliminator for removing the excess of water from the air, means for supplying a hot aqueous vapor to the current of air to raise the humidity of the air to the absolute humidity required, means to impart preliminary heat to the air before being treated to v the aqueous vapor and thin body of water,

and automatic devices for controlling the means for imparting preliminary heat to .maintain the preliminary temperature of the air practically constant.

' 6. In an air purifying and humidifying apparatus, the combination of means for producing a current of air, means for sup lying a thin body of hot water'of substantia fly constant temperature through which the air passes, an eliminator for removing the excess of water from the air, means for supplying a hot aqueous vapor to the current of air to raise the humid1t of the air tothe absolu'te humidity require and means acting upon the humidified air to lower its relative umidity and increase its tem erature.

' 7. In an air purifying an humidifying apparatus, the combinat on of means for producing a current of air, means for sup lying a thin body of hot water of substantial H stant temperature I through which the'fair passes, an eliminator for removing the excess of water from the air, means for supplying a,"

hot; aqueous vapor to the current of air to raise the humidity of'the air to the absolute said aqueous vapor being delivered to the airboth before and after being treated to the thinbody of hot water, and means for regulating the aqueous vapor to maintain a practically constant absolute humidity; v

' 8. In an air-purifying and humidifying aparatus, the combinationof means for producing a current of air, means for sup lying a thin body of hot water of substantmlly constant temperature through which the air passes, an eliminator for removing the excess of water from the air, means for supplying a hot aqueous vapor to the current of air to raise the'hurnidity of the air to the absolute humidity required, means for varying the supply of aqueous vapor to change the de- 'gree of humidification of the air, and a hu- ,diostat operating under the iniluerrce of the humidified air .to control the said means for varying the supply of aqueous vapor.

9. In an air purifying and humidifying aphumidity required,

paratus, the combination of means for pro during a current of an, means for sup lying a thin body of hot Water of substantla ly constant temperature through which the air passes, an eliminator for removing the excess of water from the air, means for supplying a hot aqueous vapor to the current of air to raise the humidity of the air to the absolute means to impart preliminary heat to the air before bein treated to the aqueous vapor and thin-b0 y of Water, and a thermostat arranged in the pat-h of the current of air to be treated for controlling the means for imparting the preliminary heat whereby the preliminary temperature of the air is made practically const ant.

10. In an air humidifying apparatus, the

combination of means for producing a ourrer it of air, means for providing a hot aque hot aqueous vapor also in the path-of the current of air to supply to the air the additional humidity to that obtained from-the aqueousbody of constant tem erature to impart a practically constant a solute humidity.

In testnnony of which invention, I have hereunto set my hand.

WM. G. R. BRAEMER.

Witnesses:

R. M. KELLY, M. F. DRIsooLL.

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