US1406111A

US1406111A - Air heater and ventilator

Info

Publication number: US1406111A
Application number: US486501A
Authority: US
Inventors: Tuck George Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-07-21
Filing date: 1921-07-21
Publication date: 1922-02-07
Anticipated expiration: 1939-02-07

Description

G. A. TUCK.

AIR HEATER AND VENT|LATOR..

APPLICATION FILED JULY 21.1921.

Patented Feb. 7, 1922.

4 SHEETS-SHEET Suva doc (i. fl-juok G. A. TUCK. AIR'HEATER AND VEN TILATOR.

APPLICATION FILED JULY 2!.1921.

v 1,406,11 1, v Patented Feb. 7, 1922.

4 SHEETS-SHEET 2- G. A. TUCK AIR HEATER AND VENTILATOR.

APPLICATION'FILED JULY 21,1921.

Patented Feb. 7 1922.

4 SHEETS-SHEET 3.

" II/I G. A. TUCK.

AIR HEATER AND VENTILATOR.

APPLICATION FILED JULY 21, I921.

Patented Feb. 7, 1922.

4 SHhETSSH'EET 4.

PATENT OFFICE.

GEORGE ALBERT T'U'CIK, OF SAN FRANCISCO, CALIFORNIA.

AIR HEATER AND VENTILATOR.

' Application filed July 21, 1921.

To all whom it may concern .1

Be it known that I, GEORGE ALBERT TUoK,

a citizen of the United States, residing at.

San Francisco, in the county of San Franc 1sco and State of California, have invented certain new and useful Improvements in Air Heaters and Ventilators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved heater and ventilator and one object of the invention is to provide an improved heater by means of which air may be heated in a very efficient manner and the heated air passed into a distributing pipe.

Another object of the invention is to provide a heater having an improved heat radiating sectlon positioned in a casing, the radiator being so constructed that air may pass through the radiator and around the same when passing from the air inlet to the air outlet of the heater casing.

Another object of the invention is to provide an improved heater having the radiator structure mounted above the burner and so constructed that the products of combustion from the burner may pass through the radiator to thoroughly heat the same and then pass out through the outlet neck of a hood at the upper end of the radiator structure.

Another object of the invention is to pro-.

vide a heater so constructed that the air may be drawn into the upper end of the heater casing .by means of an electric fan and by this fan forced down throughand about theradiator and out through an outlet at the base of the casing thus causing the air to leave the heater at the point of greatest heat.

Another object of the invention is to provide a radiator construction formed of sections so connected that they may be easily put together and when to other have joints which will be air-tight an thus preventthe products of combustion from mixing with the air. 7

Another object of the invention is to provide a heater having a burner rovided with a valve and operatlng means or opening the valve when the electric fan which draws air into the heater is turned on.

Another object of the invention is to so Specification of Letters Patent.

Patented Feb. '7, 1922.

Serial No. 486,501.

construct the valve operating means that the means for imparting moivement to the same to open the valve may consist of armspivotally mounted about a disk carried by the shaft of the fan and moved outwardly by centrifugal force against the action of springs when the fan is turned on.

This invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a view showing the improved heater in vertical section.

Figure 2 is an enlarged vertical sectional view through one of the radiator sections and a portion of another.

Figure 3 is a view showing one of the radiator sections in top plan.

Figure 4 is a transverse sectional vie through the hood of the heater.

Figure 5 is a transverse sectional view through the lower portion of the heater.

Figure 6 is a vertical sectional View through an upper section of the heater.

' Figure 7 is a transverse sectional view through the heater section shown in Fig. 6. Figure 8 is an enlarged view showing the fan and valve operating means carried thereby in side elevation.

Figure 9 is a vertical sectional view through the structure of Fig. 8 looking'towards the motor of the fan.

Figure 10 is a vertical sectional view taken along the line 1010 of Fig. 8 with the pivoted arms in a retracted position.

Figure 11 is a view similar to Fig. v1O showin the pivoted arms extended by centrifuga force.

. Figure 12 is a perspective view of one of the pivoted arms.

This improved heater is rovided with a casing l which is positione vertically and is provided with an inlet 2 at its upper end through which air may enter thecasing 1 and with an outlet 3 adjacent its lower end through which air may pass out of the casing. The base 4 of this casing 1 carries a .gas burner 5 which is supplied with gas by means of a pipe 6 controlled through. the medium of a valve 7 which is normally closed and will be opened by having its valve stem drawn upwardly through the medium of a rod 8 which extends upwardly through the outlet 3 and into the inlet 2. A pilot burner 9 15 provided in o rative relation to the burner 5 so that w on the valve 7 is opened and the gas flows through the pi e 6 to the burner 5 the gas will be ignite The air heater is provided with a supporting base 10 which is positioned in the casing 1 above the burner 5 and is provided with an air inlet 11 so that the proper amount of air may be supplied for good combustion and to create the proper draft. This supporting base 10 is tubular and is open at its lower end and at its upper end is provided with. a cross bar 12 which extends across the open upper end of the base and thus provides spaced outlets through which the products of combustion will pass.

The radiator which is positioned between the base 10 and hood 13 is provided with upper and lower sections 14 and 15 which are of substantially a duplicate construction and intermediate sections 16 which will have a duplicate construction and any number of which may be provided according to the size of the heater to be constructed. Rods 17 extend from the base 10 up through the sections which form the radiator and have their upper end portions extending above the hood 13 to carry a cast iron ring 18 upon which a fan 19 is mounted. Each of the sections 14 and 15 is provided with an outer circular wall 20'and an inner circular wall 21 thus providing space between the two walls as shown in Fig. 7. The central passage 22 within the wall or sleeve 21 is closed at one end and passageways 23 lead from the sleeve 21 through the outer wall or sleeve 20 thus providing transversely extending passages with which the central passage 22 communicates. From an inspection of Fig. 7 it will be further .noted that passages 24 for products of combustion are provided u on opposite sides of the transversely exten ing air passage so that the products of combustion may pass from the tubular base or support 10 through these passages 24 into the intermediate sections of the radiator and after passing through the intermediate sections of the radiator, the products of combustion may pass through the passages 24v of the u per section 14 into the hood 13 through wlilch they will pass over the bafile 25 and out through the outlet passageways 26 into a pipe 27 which communicates with the chimney 28. 1

Each. of the intermediate radiator sections 16 is provided with an inner sleeve or 'wall 29 and, an outer sleeve or wall 30 which is held in spaced relation about' the inner sleeve by spacing bars 31. In addition-to I ,holding the

sleeves

29 and 30 in spaced relation, the rods 31 serve as heat conductors since they will be thoroughly heated by the productsof combustion passingbetween the sleeves v and this heat Wlll bepassed to the vv, slee ves ,and' v fins 32 carried .by the; outer sleeve. The inner sleeves or walls29 provide a passage leading from the central passage 22'of the upper section 14 to the central passage 22 of the lower section 15 and the space between the

walls

29 and 30 provides an annular passage communicating at its upper end with the passages 24 of the upper section 14 and at its lower end with the passages 24 of the lower section 15. It will thus be seen that air entering the casing 1 through the inlet 2 at the upper end of the casing may pass down through this casing and out through the outlet 3, a portion of the air while passing downwardly passing into the passageways 23 of the upper section 14 of the radiator and then passing downwardly through the intermediate radiator sections 16 and out through the passageways 23 of the lower section 15. The air will thus be heated both 86 by contact with the walls of the central passage and by contact with the outer walls of the radiator and fins 32 carried thereby. In order to prevent the products of'combustion from escaping while passing from 90 the base 10 to the hood 13, the

sections

14, 15 and 16 have been provided with'annular ribs or rings which'fit in overlapping relation as shown in Figs. 1 and 2 when the sections are put together. It will thus be seen that when cement is applied to the ends of the

sections

14, 15 and 16 and these sections placed one upon the other, air-tight joints will be formed between the sections and the products of combustion will be prevented from leaking through the joints of the sections and mixing with the air in the casing.

In order to open the valve 7 when the fan is turned on, there has been provided means operated from the fan and specifically illustrated in Figs. 8 to 11. Referring to these figures, it Will. be seen that the upper end portion of the rod 8 extends above the fan shaft 33 and has its upper end passing through a guide 34 carried by aplate 35 which is connected with the fan housing by bolts or rods 36. A cross arm or plate 3.7 is provided intermediate the fan shaft 33 and guide 34 and is provided with .upper and 116

lower abutment flanges

38 and 39 which are arcuate as shown in Fig. 9. Leaf springs 40 are positioned as shown in this figure and have their outer ends seated in notches formed in the block 41 carried at the outer 120 ends of the side arms 42of'the plate 35. The inner ends of the leaf springs 40 are seated in notches fomned in a socket block 41' carried by the rod'8 abovethe upper flange .8 and it will thus be seen that'thes'e springs 1'25 tend, to assist in the rod ing-an.

adjusted position; valve which; as I previously s of afcom'entional construction, is normally held in a closed position and in order'to move the valveto an open position, it is necessary to draw the rod 8 upwardly against the action of spring means holding the valve closed. It is further desired to have the valve move to an open position when the fan. is turned on and in order to do so, there has been pro.

' the hub 44 of the fan by rods 45 so that when the fan is rotating, the disk 43 will also rotate. Arms are pivotally connected with the disk 43 and each is provided with an inner section 46, an intermediate section 47, and an outer section 48. The inner section 46 is pivotally comiected with the disk .43 and provided with a side lug 49 which is engaged by a spring 50 so that normally, the arms will be retained in the position shown in Fig. 10 with the free end portion of the intermediate section of an arm extending in overlapping relation to the inner section of an adjoimng arm. It will be further noted that when in this position, the curved end faces 51 of the outer sections 48 will engage the upper face of the flange 39 and thus the flange 38 extends across the outer edge faces of the intermediate and outer.

sections

47 and 48. When the fan is turned on, the centrifugal force exerted, will cause the arms to swing outwardly to the position shown in Fig-11 and as the arms swlng outwardly, the outer edge faces of the sections 47 .and 48 will engage the underfaee of the outstanding flange 38 and will thus tend to move the rod 8 upwardly to open the valve 7. The gas will flow through the ipe 6 and be ignited by the pilot 9 and t e air which is driven downwardly through the casing will be heated as previously ex lained and pass out through the outlet 3. W en the rod 8 is moved upwardly, the springs 40 are carried upwardly with it and will assist in retaining the rod in a raised position. When the fan is turned off the springs 50 will tend to return the arms to the position of Fig. 10 and the rod will be moved downwardly as the valve closes. It will thusbe seen that with this construction, the shaft will be imtomatically turned on when the fan is turned upper end and moves downwardly around and through the'heater and then passes out at the lower end of the casing the air will be heated to a greater extent as it moves toward the outlet and will leave the casing at the point of greatest heat. It will be further noted that if desired, the gas of the pilot can be shut oil and the gas for the burner 5 shutoff either by means of the valve 52 or by means of a separate valve placed in the gas-line in advance of the valve 7. The device can thus be used as a ventilator for supplying fresh air or cooled air from a suitable source of cool air and this fresh air passed through the casing and through the outlet 3 into the pipe which is to distribute the fresh air or hot air through a building. By having the casing provided with a removable cover 53, the cover can be removed and easy access had to the fan for 30 making repairs. There has thus been pro vided a device for use in suppl hot or fresh air to a building and there as fur-v ther been provided a device in which the air can be heated in a very effective manner and further the burner provided with a flow of gas which will be increased accordingly, to the speed at which the fan rotates. Therefore', the airwill always be heated at the right temperature and without danger of waste of gas.

I claim:

1. A heater comprising a casing having an air inlet and an air outlet, a burner in the casing, a heater in said casing and hav-* ing a. hollow base above the burner, a hood in the upper portion of the casing having an outlet extending through said casing, and a radiator element between the base and hood and having superimposed sections ha-v- 100 ing inner and outer sleeves forming a central air passage and :1. products of. combustion passage about the air passage and between the sleeves, the products of' combustion passage having communication with the 105 base and hood and the air passage being closed at its ends and adjacent the ends having necks extending through the outer sleeve.

2. A heater comprisin a casing having an 110 air inlet and an air out et, a source of heat in the casing, a radiator in the casin hav-" ing a hollow base above the source 0 heat, a hood in the casing having an outlet extending through the casing, and an intermediate section between the base and hood having a central air passage and a products of combustion passage about the air passage, the products of combustion passage having communication with the base and hood and the air passage being closed at its ends and having passageways extending through the products of combustion passage and communicating with the interior of the casin 3. In a-heater, a heat absorbing'and rad1-' ating structure comprising a hollow open ended base, a hood having an outlet, and a structure between said hood and base having an outer sleeve and an inner sleeve ex-. tending through the outer sleeve and forming a central passage and. a passage between the inner and outer sleeves, the inner sleeve being closed at its ends and adjacent the ends being provided with passageways forming side plpes extending from the central passage through the outer sleeves. 4. heater comprisin acasing having an air inlet and an air out et, a source of heat in the casing, a heater mounted in said casing and having a hollow base above the source of heat, a hood in the upper portion of said casing having an outletexte'nding through the casing, and a radiator element between the base and hood and having intermediate' and end sections each having s aced inner and outer sleeves to provide. an air conduit of the inner sleeve and a products of. combustion passage between'the inner and outer sleeves, the end sections having the inner sleeves closed at their outer'ends and provided with neck extensions extendin through the sides of the'outer sleeves and communicating with the interior of the casng.

'5. The structure of claim 4 having the contacting ends of the radiator sections provided with annular ribs overlapping when the sections are placed one upon another and providing air-tight joints when the sections are cemented together. I

6. A heater comprising a casing having an air inlet and an air outlet, a burner in the casing, a tubular sup rt abo e said burner open at its upper an lower ends and provided with an air inlet extending through the casing, a heater resting upon said support and having a lower section rovided with a transverse air passage an a central passage extending vertically from the transverse passage through the upper end of the lower section and about the vertical passage provided with products of combustion passages communicating with the interior of sa d, support, intermediatesections sup rted by the lower section and each having a central air passage and a circumferentially extending products of combustion passage about the air passage, an upper section provided with a ocket "registering with the air passage an passages about the pocket registering with the products of combustion passages, and further having transverse passages leading from 'the pocket through the sides of the upper section, and a hood u on the upper section having an outlet lea ing from one side and a baffle plate vertically and across the outlet '7. A heater comprising a casin having an air inlet adjacent its upper end air outlet adjacent its lower end, a burner in the casing below the air' outlet, and a heater in the casing, said heater comprising a tubular open ended base mounted above the burner having an air inlet extending central air and an from-its lower end through the casing, a

radiator disposed vertically in said casing and having upper and lower sections and intermediate sections between the u per and lower sections, and a hood carrie by the upper section and having an outlet for products of combustion passing through the casing, the intermediate sections each having spaced inner and outer sleeves providing a central air passage and an annular passage between the sleeves for products of combustion and the upper and lower sections each having a transverse air passage and a vertical air passage leadin from the trans verse passage and communicating with the assage of an adjoining intermediate sectlon and further provided with vertical products of combustion passages about the central air passage for conducting products of combustion from the base into' the passage between the sleeves of the intermediate sections and into said hood.

8. A heater comprising a casing having an air inlet an an air outlet, a source of heat in said casing, a heat absorbing and radiating element, a supply for the source of heat including a control element, a rotary fan for moving'air through said casing, and means actuated from the fan when the fan is in motion for actuating said control element and increasing and decreasing the amount of heat according to the speed 'at which the fan rotates.

9. Thefstructure of claim 8 having the means for actuating the control element ineluding an element carried by the fan and moved by centrifugal force created when the fan isin motion.

10. A heater comprising a casing having an air inlet 'andan air outlet, a fluid burner in said casing, a heat absorbing and radiating element in said casing, a fuel conductor pipe for said burner having a control valve, a rotary fan for movingair. through the casing, and means operated from the fan for opening the valve when the fan is in. motion.

11. A heater comprising a casing having an air inlet and an air outlet, a fluid burner in said casing, a heat conducting and radiating element in said casing above said burner,

a fuel pipe leading to sa1d burner and having a normally closed valve provided with a stem movable to open the valve, a rod extending upwardly from the stem of the valve, a rotary fan at the air inlet of said casing, and means actuated by said fan for moving the rod to open the valve when the fan is turned on.

12. The structure of claim 10 havin the rod moving means moved by centri ugal force set up when the fan-is rotating and the rod moved to open the valve according to the speed at which the fan rotates.

13. A heater comprising a casing having an upper air inlet and a lower air outlet, a burner in said casing, a heat conducting and radiating element in said casing above said burner, a pipe leading to said burner and having a normally closed valve provided with a stem moved to open the valve, a rod extending upwardly from the stem of the valve adjacent said casing, a rotary fan at the air inlet of said casing, spaced abut ments carried by said rod, a disk carried by the shaft of said. fan, arms pivotally connected with said disk and extending between the abutments of said rod, and springs yieldably retaining the arms in a retracted position, the arms being thrown outwardly by centrifugal force and engaging one of the abutments to move the rod upwardly and open the valve when the fan is rotating.

14. A heater comprising a casing having an upper air inlet and a lower air outlet, a gas burner in said casing below the air outlet, a heat conducting and radiating element in said casing above said burner, a gas pipe leading to said burner and having a normally closed valve provided with a stem moved upwardly to open the valve, a rod extending upwardly from the stem of the valve adjacent said casing, a rotary fan at the air inlet of said casing, upper and lower abutments carried by said rod, a disk carried by the shaft of said fan, arms pivotally connected with said disk and extending between the abutments of said rod, each arm having an inner section pivoted to the disk, an intermediate section extending transversely from the inner section and each having its free end portion overlapping the inner section of an adjoining arm when the arms are in a retracted position, and an outer section upon the intermediate section and terminating short of the free end thereof for engaging the lower abutment when the arms are in a retracted position, and

springs connected with the disk and inner sections of the arms to yieldably retain the arms in a retracted position, the arms being thrown outwardly against the action of the springs by centrifugal force and engaging the upper abutment to move the rod upwardly and open the valve when the fan is rotating.

15. In a heater, a casing having an inlet and an outlet, a rotary fan for passing air through the casing, a source of heat, a supply control element having an operating element extending to a point adjacent the fan and having spaced abutment elements, a disk carried by the shaft of the rotary fan, arms pivotally connected with the disk and extending between said abutments and springs yieldably holding the arms in a retracted position, the arms being thrown outwardly by centrifugal force and engaging one of the abutments to move the operating element'when the fan is rotating.

16. In a heater, a casing having an inlet and an outlet, a rotary fan for passing air through the casing, a source of heat, a supply control element having an operating element extending to a point adjacent the fan and having spaced abutment elements, a disk carried by the shaft of the rotary fan, arms pivotally connected with the disk and extending between said abutments, each arm having an inner section pivoted to the disk, an intermediate section extending trans versely from the inner section and each having its free end portion overlapping the inher section of an adjoining arm when the arms are in a retracted position, and an outer section upon the intermediate section and terminating short of the free end thereof for engaging the lower abutment when the arms are in a retracted position, and springs connected with the disk and inner sections of the arms to yieldably retain the arms in a retracted position, the arms being thrown outwardly against the action of the springs by centrlfugal force and engaging the upper abutment to move the rod -upwardly and open the valve when the fan is rotating.

In testimony whereof I have hereunto set my hand.

GEORGE ALBERT TUCK.