Патент USA US2133599код для вставки
Oct. 18, 1938. L. L. TURNEY 2,133,599 HUMIDIFIER BOILER Filed Oct. 16, 1935 3 Sheets-Sheet 1 ifZ My Oct. 18, 1938. |___ L, TURNEY ‘ 2,133,599 HUMIDIFIER BOILER Filed Oct. 16, 1955 5 Sheets-Sheet 2 Oct. 18, 1938. |__ L, TURNEY 7 2,133,599 HUMIDIFIER BOILER Filed Oct. 16, 1935 a 3 Sheets-Sheet 5 ' / \ | 73 Hi»? 17 II * ?z/ezzior I Patented Oct. 18, 1938 2,133,599 it UNITED STATES PATENT ‘OFFICE 2,133,599 HUMIDIFIER BOILER Lee L. Tumey, Muskegon, Mich., assignor of one half to William M. Tippett, Muskegon, Mich. Application October 16, 1935, Serial No. 45,227 2 Claims. My invention relates to humidi?ers, and es pecially humidi?ers used in connection with hot air and radiator types of domestic heating systems. 5 One object of my invention is the supply of Water vapor to the space being heated, in quan tities and at times automatically regulated sub stantially in accordance with requirements for maintaining a uniform degree of humidity there 10 in, and preferably without recourse to hygrostatic control apparatus. This objective I realize in general by the use of a small boiler exposed to the combustion chamber of the heating furnace or boiler. Water vapor in the form of steam [5 generated in the boiler is supplied to the dis charge ducts of the furnace or to the air stream across the radiator, as the case may be. The humidity drop in heating intake or in?ltrating outside air up to room temperature, increases in 20 general as the outside temperature lowers and requires increased ?ring. As a result the amount of water vapor required to maintain a constant room humidity is substantially proportional to the quantity of heat (or fuel consumption) re 25 quired by the heating furnace or boiler. The boiler, which is in the combustion chamber, gen- _ erates steam for humidi?cation at such time as, and in proportion to, the fuel consumption re quirement from time to time of the heating plant, 30 and thereby in accordance with the additional quantity of moisture required for maintaining a constant degree of room humidity. For a fuller realization of this objective, I with hold the boiler from substantial heat conducting a contact with the water jackets of the boiler or air jackets of the furnace, as the case may be, so that the amount of steam generated in the boiler will be subject only to the fuel consump tion in the combustion chamber and not lessened 40 by dissipation of heat from the boiler to the jacket in varying amounts, depending in part upon the temperature of the water or cold air entering the jacket. Another object of my invention is the ready 45 removal of the accumulations of lime and other sediment precipitated in the boiling of the water. I prefer to accomplish this object by interposing a settling chamber between the ?oat chamber, which controls the feed of water to the boiler, and 50 the boiler where the steam is generated. The (01. 122-20) thereof, and it can readily be removed by means of a bottom closure plate or drain plug.‘ Settling out of sedimentary matter is preferably furthered by raising the temperature of the water in the settling chamber in part by steam communica- 5 tion between the boiler and settling chamber, in part by heat conduction through the water and steam conduits, and in part by the return of in cidental condensed steam to the settling tank. Another object of my invention is to supply 10. water vapor to rooms heated by radiators in such a manner that the water vapor is delivered where the air is the warmest and thus best able to hold the water vapor, and in general at such times as the radiators are warmest, as distin- 15 guished from delivering water vapor during periods when the radiators are relatively cold. In this connection I also provide means for re ceiving and returning to the system any water vapor which may condense on radiators, and 20 this return is preferably made in such a manner as not to interfere with the continued supply of vapor. ~ Other objects of my invention are concerned with an improved ?oat valve for the humidi?er, 25 improved control for the supply of vapor, and an adjustable mounting for the boiler whereby its degree of exposure to the heat of the com bustion chamber may be varied. The foregoing together with further objects 30 and features of my invention are set forth in the following description of speci?c embodiments thereof and illustrated in the accompanying drawings wherein: Fig. 1 is a vertical longitudinal section through .35 a preferred form of steam generating vapor unit of my invention; Fig. 2 is an enlargement of the left-hand end of Fig. l to show the details of the ?oat valve; Fig. 3 is a front elevation of a hot air furnace 40 to which my humidi?er has been applied; Fig. 4 is a front elevation of a hot water or steam boiler for domestic heating to which my humidi?er has been applied, showing also a ?oor thereabove in cross section with radiators to the 45 air stream of which my humidi?er supplies vapor; Fig. 5 is a plan section through the furnace of Fig. 3; major portion of the precipitated matter while held in suspension by the agitation of the boiling Fig. 6 is a plan ‘section through a furnace, similar to Fig. 5, but showing a modi?ed adjust able mounting for the boiler within the combus in the boiler, ?nds its way to the quiet of the tion chamber; chamber and boiler are so arranged that the 55 settling chamber, where it settles to the bottom Fig. '7 is a detailed vertical section through the 55 2 2,183,599 furnace feed door showing the modi?ed mounting of Fig. 6; Fig. 8 is a diagrammatic view of a hygrostatic control for the vapor feed from the humidifier; Fig. 9 is a view somewhat similar to the upper part of Fig. 4, but showing a modi?ed arrange- ment for delivering vapor to the radiators and returning condensed vapor; and Fig. 10 is a cross sectional view of a modi?ed form of steam trap. Referring ?rst to Fig. 1, which is a detailed cross section of the humidity generating unit itself which is mounted with its boiler in the combustion chamber of the furnace or boiler, 15 the vapor generating unit comprises in general the boiler I5, a ?oat chamber l6 and a settling chamber l‘l interposed between the boiler and ?oat chamber, with the boiler mounted within the combustion chamber and the ?oat and set 20 tling chambers mounted without the boiler or furnace. The ?oat chamber I8 is fed by a water supply tube l8, the end of which is coupled to a valve sleeve 49, which in turn is screw threaded onto a valve body 20 to leave a valve chamber within the sleeve. The valve body is in the form of a shouldered plug which is inserted through a wall of the ?oat chamber and secured in position on the wall by a clamping nut 2!. Within the 30 chamber afforded by the valve sleeve I9 is a mov able valve 22 comprising a valve head which em braces the backside and peripheral edges of a live rubber valve washer 23 and is mounted on a valve stem 24. The valve stem 24 extends through a central bore 25 of the valve body, wa ter passage between the bore and the valve stem provide an over?ow opening [611 through a ver tical wall of the ?oat chamber of greater capa city than the maximum inlet to the ?oat cham ber, which will maintain a water level but slight 25 ly above the level maintained by the ?oat valve. The settling chamber l1 preferably immedi ately adjoins the ?oat chamber and communi cates therewith by registering passages 35 and 36 in the adjacent walls of the ?oat chamber 30 and settling chamber, respectively, which may conveniently be secured together by tie bolts 31. Water passing from the ?oat chamber into the settling chamber passes on through a boiler in let pipe 38, preferably opposite the passage 36 in 85 the settling chamber, to the lower end of the boiler l5. The valve is normally the valve head and the sleeve 19 and is further urged to closed position by the pressure of the 45 water from the supply tube I8. The ?oat actuating mechanism for the valve comprises a pair of pivot ears 28 on the valve body 20 for journaling the pivot pin 30 which passes through the inner end of a ?oat lever 3| 50 of I-shape cross section, the outer end of the lever carrying a hollow metal ?oat 32. The ?oat lever 3| is of generally L-shaped form with the short leg of the L depending more or less verti cally from the pivot pin and the long leg extend 55 ing more or less horizontally to the ?oat from 75 sediment which can readily be removed by un~ screwing the drain plug 34. As an additional precaution against the remote 20 possibility of the ?oat valve failing to close, I steam discharge pipe 39, preferably parallel with against the washer 23. 70 the water therein is relatively cool. A consid 15 erable space is allowed below the working limits of the ?oat, however, for the accumulation of nally in the bore. The adjacent end of the valve urged closed by the spring 28 interposed between 65 then the sleeve is unscrewed from the valve body exposing all of the moving parts and the valve seat. An entire new valve assembly, including the stem, head and washer, can readily be sub stituted. This does not require removal of the cover It’ of the ?oat chamber. In practice very little sediment will accumu late in the bottom of the ?oat chamber because being afforded by slots 28 extending longitudi body 20 is formed as a valve seat 2'! somewhat 40 rounded in radial section and adapted to seal 60 the valve is closed by the water level in the ?oat chamber rising above a predetermined line. The interior of the valve is readily accessible for cleaning or for replacement of the washer, should occasion ever require. The water feed , tube I8 is disconnected from the sleeve l8 and the bottom of the short leg. Through the ver tical short leg of the lever and in substantial alignment with the axis of the valve stem, an adjusting screw is theaded and adjustably held by a lock nut 33' with the‘end of the screw abut ting the end of the valve stem. When the water level in the ?oat chamber drops below a predetermined line, the ?oat, act ing through the ?oat lever and adjusting screw, will push against the end of the valve stem with su?icient force to open the valve against the pressure of the valve spring and the pressure of the water in the supply line, and once the valve is opened, the valve closing force of the water pressure will be greatly reduced, whereby something of a snap ‘action is afforded to insure a maximum opening of the valve which will avoid the lodgment of particles on the valve washer. A similar snap action is afforded when From the upper end of the boiler a the pipe 38, leads back to the settling chamber at a height above the water level. For ease of assembly I provide the usual unions 40 and 4| for the pipes 38 and 38. These pipes extend through spaced holes in the furnace or boiler wall 42 to which they are ?xed by clamping nuts 43 whereby the boiler is supported 45 in the combustion chamber a predetermined dis tance inwardly from the wall 42. Surface extenuating fins 44 are integrally cast into the bottom portion of the boiler and a clean out plug 45 is provided at the end of the boiler. The settling chamber l1 serves the manifold purposes of carrying water from the ?oat cham ber to the boiler, of aiding in precipitating some of the lime or other precipitable matter from the water before it reaches the boiler, of a quiescent 55 settling pot for settling out solid matter precipi tated in the boiler and carried in suspension by the water back to the settling chamber, of a clean-out for the bulk of the precipitated mat ter, of an expansion or steam chamber for re ceiving steam generated in the boiler, and of a chamber for a regulating damper directing the steam to a vapor supply pipe or to waste. 60 , The upper end of the settling chamber, which is here shown as of vertical cylindrical construc 65 tion, is closed by a cap 46 threaded to receive the lower end of an outlet pipe 41 for humidifying vapor-vapor to be used for humidifying-éand a waste pipe 48 for vaporwhich is not to be used‘ for humidifying. A damper 49 is mounted in the 70 cap 46 by means of a pivot pin 58 and so ar ranged that in one position it closes off the out let pipe 41 and in the alternate position it closes the waste pipe 48. A damper arm 58' on the exposed end of the pivot pin 50 permits manipu 75 2,183,590 lation of the damper. If it is found that the boiler is generating steam at a faster rate than required for the desired humidity, the damper, which is normally in a position to close off the waste pipe 48, may be moved to permit the waste of a certain portion of the steam generated. Or, if the humidifying is to be. entirely eliminated temporarily, the damper may be swung to close o? the outlet pipe/41. Steam which has been generated in the boiler 10 and which fills the steam discharge pipe 39 and 3 charge of water through the over?ow passage 35 in the ?oat chamber in the event the ?oat valve should fail to close. In this installation the fur nace wall-42‘ of Fig. 1 is preferably the single thickness of the frame of .the feed door I56v as shown best in Fig. 3, the boiler l5 being disposed within the combustion chamber 51 of the fur nace and near one lateral side thereof. The va por outlet pipe 41 leading from the settling cham ber I ‘I is extended horizontally inwardly at 58 10 through the crown of the air Jacket 59 of the the settling compartment above the water level, furnace, and preferably terminates centrally serves to heat the walls thereof and impart that heat to the quiescent water in the lower part of 15 the settling chamber. This serves to elevate the temperature of the water as it is fed from thereof whereby the vapor is equally distributed the ?oat chamber to a point where a consider able amount of the lime and other such matter in the water is precipitated and, the water in the settling chamber being quiet, settles in the bot tom. There is, especially in the instance of the application of my humidi?er to radiators as distingulshed from hot air furnaces, and as will later be described, a certain amount of con densed vapor which runs back through the out let pipe 41 to the settling chamber where it adds to the heat of the water therein. There is also a certain amount of direct heat conductivity through the metal of the pipes 38 and 39 also serving to maintain a substantially elevated temperature of the water in the settling chamber. Because of the high temperature in the boiler and the distilling effect of boiling off of water there, a considerable amount of lime and other matter brought in in solution in the water is precipitated out of solution in the boiler, but due to the turbulence of the boiling water the precipitated matter for the most part stays in suspension and dis‘ributes itself back through the water inlet pipe 38 and into the settling chamber. The diameter of the water inlet pipe 38 is preferably so large in proportion to the rate of water feed that the speed of ?ow of the water is less than the rate at which suspended 45 matter will dissipate itself through the pipe 38 back to the settling tank. Once in the quiet of the settling tank, it will settle to the bottom. In this way, as I have found from experience, some 90% of the total volume of precipitated 50 matter will accumulate in the bottom of the set tling tank. The settling tank has ample volume below the pipe 38 and the passage 36 for the accommoda‘ion of a few months’ accumulation of precipitated matter. From time to time it (21 O! may readily be removed by shutting off the wa ter supply valve and removing the bottom closure plate 5| of the settling tank by means of the cap screws 52. - ‘ Because the water level maintained by the ?oat CO valve is below the steam discharge pipe 39, there is no water circulating circuit established tend ing to create curren‘s which would interfere with the quiescence of the water in the settling tank. In Fig. 3 I have shown the vapor generating unit of my humidi?er installed in a conventional type of hot air furnace 55. The supply water for the ?oat chamber is preferably taken from the household water supply line 53 by means of a saddle valve 54 to which the water supply tube I8 is connected. Thevsaddle valve is adjusted to cut the water supply at- the prevailing water ‘pressure down to the maximum rate at which the water is to be boiled off in the steam gen This likewise limits an excessive dis 75 erator. to the several hot air ducts 60, whence the un divided air is led into the rooms through the 15 usual hot air regis‘ers. Whether the furnace burn coal, gas or fuel oil, or whether it be of the continuous or inter mittent ?ring type, the water boiling heat, and even the heat which will vaporize the water short of boiling temperature, is in proportion to the heat supplied to the heating system for main taining the room temperature. As explained in the introduction to this speci?cation, this causes the delivery of water vapor by the humidi?er 25 substantially as and in the amounts required to maintain the desired humidity in the rooms, even though the outside temperature varies greatly and even though the room temperature is varied from time to time. In the instance of a coal ?red furnace or boiler where it is of advantage to have water vapor supplied to the fuel for better combustion, the vapor waste pipe 48 from the settling chamber may be connected with an ash pit pipe 6| to de liver waste vapors to the ash pit at such times as the damper 49 may be adjusted partially or wholly to open the waste pipe 48. In Fig. 4 I have shown my humidity generator applied to the instance of a hot water or steam 40 boiler 65 where, similarly, the boiler is mounted in the combustion chamber by passing the pipes 41 and 48 through a single thickness of metal in the frame of the feed door 61, if possible. I have indicated in Fig. 4 radiators on the 45 ?oor above which are served by the boiler. The vapor outlet pipe 41 is connected with vapor tub ing 10 which leads to condensate traps 'Il below the ?oor and beneath each radiator. A short ‘ length of vertical pipe 12 leads from the trap ‘H 50 through the ?oor and communicates with the drain pan 13, one of which is located beneath each radiator 14 served by the humidi?er. Each drain pan ‘I3 may comprise a lower upstanding vertical side 15 and a bottom 16 sloping to the 55 communication of the vertical pipe 12. Vapor generated in the boiler passes through the upper part of the settling tank 46 through the vapor outlet pipe 41, the vapor tubing 10, the trap ‘H, and the vertical pipe 12 and into the stream 60 of air rising upwardly from the bottom of the radiator. Until the radiator has been sumciently heated, there may be some condensation of the vapor thus supplied, but this condensed vapor gravitates to the bottom of the sections of the 65 radiator and drops into the drain pan ‘I3, whence it is drained into the trap ‘H. The trapv ‘II is su?iciently heated by the steam passing there through to re-evaporate the condensate caught in the trap. 70 Except for such steam as is condensed under the circumstances mentioned-and all thus con densed will drain- back into the drain pan-all of the steam will be delivered to the air where it is _ the warmest in the room and where, by virtue of 75 4 2,133,599 its being heated'b'yTthe radiator, the air will be of su?lciently high temperature to absorb the moisture and distributed throughout the room without further condensation. There is gener ally a certain amount of lag in time between the generation of the steam in the ?ash boiler and the heating of the radiators, especially in hot water heating systems. That, however, is a rela tively brief delay. In general, it will be ob 10 served, the delivery of moisture by my humidi ?er is at the time when the radiators are warm. Also, the'rate at which moisture is supplied is more or less in proportion to the temperature to which the radiators are heated. Thus the mois 15 ture is supplied to the air passing over the radi ator at the time of and in proportion to the ca pacity of the air, due to the heating thereof by the radiator, to receive and absorb and distribute the moisture. As compared with water evaporating pans which are heated by the radiators themselves or by the air passing therefrom, my humidity supply by steam generation in the combustion cham ber has the advantage of being more quickly sup plied in response to intermittent ?ring periods and, even more important, the moisture may be supplied in greater volume and better automat ically controlled quantitatively to supply the requisite amount of moisture to maintain a con 30 stant percentage of humidity. In Fig. 9 I have illustrated a modi?ed form of communication between the vapor outlet pipe 41 and the drain pans 13, which is distinguished by the inclusion of a separate condensate return 35 from the trap ‘H to the vapor, outlet pipe 41. Each condensate return tube or pipe 11 leads from the bottom of the associated trap ‘I l, where by the returning condensate does not interfere with the travel of the vapor. . 40 For certain types of installation, it may be desirable to provide an adjustment as between the fuel consumption and the steam generated for humidifying the air. For serving the purpose of this adjustment, I may provide a mounting for the boiler whereby its position in the combustion chamber may be changed to bring it closer to or farther away from zones of greatest heat. In Figs. 6 and 7 I have shown such an adjust able mounting for the boiler. Here the spaced 50 parallel water inlet pipe 38 and steam discharge a swinging of the boiler-settling chamber-?oat chamber-unit, the water feed to the ?oat cham ber is preferably through a ?exible hose l8’. Similarly a ?exible section would be embodied in the vapor outlet pipe 41. While for most practical purposes an original installation with proper balance between the vapor generation and fuel combustion will main tain a satisfactory degree of humidity in the rooms, I contemplate that if desired for greater 10 accuracy or unusual circumstances, a hygrostatio control may be provided for my humidi?er. I have shown such a hygrostatic control in Fig. 8. A hygrostat 80 is mounted in the room space to be heated and through a suitable electric cir 15 cuit controls a motor driven actuating device 8| which, through a chain 82, lifts, or permits to drop, the weighted extension arm 83 for the damper arm 58'. Upon an increase of relative humidity beyond a predetermined degree, the 20 hygrostat actuates to close or partially close the vapor outlet pipe 41, while on a drop of rela tive humidity below the predetremined degree, the hygrostat acts to move the damper to open the outlet pipe 41 and, if necessary, to close the 25 discharge to the waste pipe 48. In Fig. 10 I have shown a modi?ed form of steam trap ‘II’ which may be substituted for the steam trap 'II. From the top of the trap ‘H’ the pipe 12 leads through the ?ooring to the drain 30 pan 13. The vapor conduit 10 is led to the lower end of the trap. An upstanding steam passage 85 is formed in the lower portion of the steam trap and extends from the ?oor 88 thereof to an intermediate height and is preferably cast in 35 tegral with the steam trap by suitable coring. The lower end of the steam passage 85 is sub stantially in line with and receives steam from the conduit 10. An opening in the bottom wall 88 of the main chamber of the trap communicates with 40 a horizontal passageway 81 formed below the bottom wall 86. At the end of the passageway 81 adjacent the steam conduit 10 is a low up standing wall 89. Adjacent the other end of the passageway 81, the bottom wall is provided with 45 a depending lip 88' which extends below the up per end of the wall 89. The passageway 81 thus will form a water sealed trap by virtue of con densate accumulated in the bottom of the trap ll’. 60 Because the diameter, of the passage 85 is somewhat less than the diameter of the steam conduit 18, the pressure will be somewhat less in the main chamber of the trap than in the small space surrounding the upstanding wall 89 above 55 the steam conduit 18. The trap ‘ll will thus act as an expansion chamber to reduce the pressure pipe 39 pass through the feed door rather than the frame for the feed door. They do not di rectly engage holes in‘ the feed door, however, but instead they pass through, and are slidably 55 journaled in, the respective bores of a Siamese twin sleeve casting 18, which, in turn passes through suitably spaced holes in the feed. door and is secured to the feed door by the mounting screw 19. This slidable mounting of the pipes 38 and 39 permits the boiler to be inserted to the sure differential will permit condensate to ?ll up central zone of the combustion chamber for the lower portion of the trap ‘I i ' to a considerable greater heating effect, or withdrawn toward the height and maintain a large body of accumulated marginal zone of the combustion chamber for a lesser heating e?ect. By experiment the opti 65 mum position of the boiler for given circum stances may be determined. Such an installation as shown in Figs. 6 and 7 is recommended only where the furnace or boiler burns gas or oil and where the feed door need be 70 opened but infrequently. When it is necessary to open the feed door, the parallel pipes 38 and 39 can be withdrawn outwardly until the boiler comes against the inside of the feed door, so that when the feed door is swung open the boiler will 78 clear the frame of the door. Since this involves of the steam passing out through the outlet pipe 12 to the exterior of the radiator. Also this pres‘ condensate so that it will not run down the steam conduit 18 while steam is being generated. At ‘the close of the ?re period the collapse of pres sure within the trap l1’ and the consequent equalization of pressures therein will permit the accumulated condensate to flow through the pas sage 81 and over the wall 89 and down the steam conduit 18 back to the settling chamber at a time when it will not interfere with the up-travel of the steam. While I have shown and described these speci?c embodiments of my invention, I contemplate that many changes may be made therein without de 5 2, 138,599 parting from the scope or spirit of my invention. I claim: . 1. A humidiiying apparatus for supplying wa ter vapor to the space heated by a heating plant, comprising a boiler, means for supporting the boiler within, and subject to the heat of, the combustion chamber of the heating plant, a set tling chamber without the combustion chamber, a water feed conduit from the settling chamber 10 to the boiler, a steam feed conduit from the boiler to the settling chamber, means for supplying water to the settling chamber to maintain a wa ter level therein above the water feed conduit and below the steam feed conduit, a vapor dis charge conduit from the settling chamber above the water level for delivering vapor to the-air heated by the plant, a waste vapor passage also communicating with the settling chamber above the water level, and a damper mounted in the settling chamber to swing between two positions, one position shutting off the vapor discharge - conduit and the other position shutting off the waste vapor passage. _ 2. In a humidifying apparatus, in combination a ?re door, a ?tting mounted thereon having a pair of bores open to both sides of the door, a boiler on the inside of the door, a precipitation 10 chamber on the outer side of the door, and pipes passing through said bores connecting said boiler and chamberand slidable therein, whereby the boiler may be moved outwardly into a position to 15 enable the door to be opened. LEE L. 'I'URNEY.