US2441803A - Damper control - Google Patents
Damper control Download PDFInfo
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- US2441803A US2441803A US589232A US58923245A US2441803A US 2441803 A US2441803 A US 2441803A US 589232 A US589232 A US 589232A US 58923245 A US58923245 A US 58923245A US 2441803 A US2441803 A US 2441803A
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- damper
- pressure
- connection
- blower
- responsive device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/02—Regulating draught by direct pressure operation of single valves or dampers
Definitions
- This invention relates to a damper and to an automatic control therefor. It has for one object to provide an automatic damper control which will operate in response to one or more variable conditions present in a furnace when combustion is occurring.
- Another object is to provide a damper control arranged to operate in response to variations in suction conditions within the smoke pipe of the furnace.
- Another object is to provide means for operating a damper control in response to variations in the air supply to the furnace and in response to variations of conditions in the smoke pipe of the furnace.
- Figure 2 is a detailed frontelevation on an enlarged scale, showinga' latching mechanism
- Figure 3 is a sectional detail showing a modified form of piston controlling means
- Figure 4 is a sectional detail showing a further modified form of piston controlling means.
- the invention as shown, is illustrated diagrammatically in association with a furnace or combustion device and a blower or air-supplying means. As shown, the furnace is indicateddia grammatically at I. The invention may be applied to almost any type of burning device.
- a smoke pipe 2 conducts away the smoke and gases which result from the combustion.
- a blower 3 is associated with the furnace, which forces air to the furnace.
- the blower may also be associated with the means for supplying fuel, but these are not shown herewith, as they form no essential part of the present invention, which may be applied to a furnace burning solid or liquid fuel, a
- a damper 4 is fixed on a shaft 5, which is pivoted in the smoke pipe 2.
- a lever or arm 6 is also fixed on the shaft and arranged to tilt the damper,
- a counterweight 1 may be adjustably 12 Claims. (Cl. 236-15) 7 end.
- the arm may be perfe rated,as at 8, or otherwise shaped to receive one end of a chain 9.
- the chain is also preferably provided with a ring or hook-engaging means l0.
- a cable Il may extend through a cylinder head I2 of a cylinder I3 which has a closed bottom 14. The cable is fixed within the cylinder toapiston l5.
- Air'from the blower 3 moves through a pipe or conduit I6 into'the upper end of the cylinder l3, as shown in Figure 1.
- a pipe or conduit [1 is connected, as at I8, to the interior of the cylinder 13 and is connected, as at Hi, to the interior of the smoke pipe 2.
- a stop 20 may be adjustably fixed upon the cable to limit the downward movement of the piston.
- the ring In is arranged to be engaged. over a hook 2
- This hook may be carried on a support 22 mounted on the front of the furnace or boiler. As will be seen from Figure 2, the hook 2
- a cylinder 23 having a head and a closed bottom 25 may be used.
- This cylinder has mounted within it a closed bellows 26.
- the cable II passes through the cylinder head 24 and is secured to the bellows.
- the pressure conduit I6 is in communication with the cylinder 23, as at 2
- a'cylinder 29 is used.
- This cylinder has. a cylinder head 30 through which the cable ll passes. It has a closed bottom 3
- An inverted cup 33 is positioned within the cylinder 29 andfloats in the liquid 32.
- the cable II is secured to the inverted cup;
- the pressure conduit l 6 is incommunication with the cylinder 29, as at 34, and the suction conduit I I is vin communication withfthe interior of the inverted cup 33,asat35'.
- V p Although we. have shown an operative form of our invention, itwill be recognized that many changes in the form; shape and arrangement of parts can be made without departing from the spirit of the invention, and ur showing is therefore to be taken as, in a sense, diagrammatic.
- the control is associated with a fuel burning device which for purposesof simplicity has been positioned on the arm 6, preferably adjacent one called a furnace, although it might be associated 3 with a stove or any equivalent means in which fuel is burned and in connection with which means are provided for furnishing air from a blower or its equivalent.
- any combustion device the products of combustion are discharged, and for purposes of simplicity the means or opening through which they are discharged is referred to as a smoke pipe. some suction is produced in the smoke pipe.
- the device whether it includes the cylinder of Figure l, the bellows of Figure 3 or the dash-pot of accidentally engaged upon it.
- Figure 4 operates in substantially the same man ing the parts will stand in substantially the posig tion shown in full. lines in Figure 1.
- Figure 3 an opening'tlo the air. would beprovided. from below the bellows and in the case of Figure i is moved somewhat tothe side from the verticalline along which'it will: ordinarilymove during operation ofthe deviceand-is engaged uponthe.
- weclaimj 1 In combination. with a combustion apparatus having a smoke pipe and a blower, a damper for saidgcombustion apparatus injlsaid pipe, and means, for automatically moving said damper, said means comprising a damper operating member providedwith movin means tending, when free to do so, to move itfin, one direction; and means for moving-it in the opposite direction, said; means2 including a, pressure responsive device, aconnection, member between said p essure responsive device and said damper moving means, a connection fromgsaidblower in, communication withonesideof said pressure.
- the said pressure responsive device is-caused to move the connection member iny'one direction. as the pressure from the. blower. increases and: as the suction; in the smoke pipe increases, the moving means being effective to move the damper in, the opposite direction as. said. Pressureand suction decrease.
- means comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for'moving it in the opposite direction, said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connec-' tion from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive de-' vice is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and means for latching said connection in one position, said means including a member in said connection and a latching member, the two being adapted to be engaged together, the latching member being positioned out of the line of normal travel of said connection.
- said means comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction
- said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limit movement of said pressure responsive device in one direction, and means for latching said connection in one position
- said means including a member in said connection and a latching member, the two being adapted to
- a damper for said combustion apparatus in said pipe comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction
- said means including a pressure responsive device, a flexible connection member between said pressure responsive device and said damper moving means, a connection from said blower in com munication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the 6 opposite direction as said pressure and suction decrease.
- a damper for said combustion apparatus in said pipe comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction
- said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being eifective to move the damper in the opposite direction as said pressure and suction decrease.
- a damper for said combustion apparatus in said pipe comprising a damper operating member positioned outside of the smoke pipe provided with moving means ten-ding, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including'a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication'vvith one side of said pressure operated device, and a connection from said.
- connection member in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being efi'ective to movethe damper in the opposite direction as said pressure and suction decrease, and a stop on .said connection member efiective to limit movement of said pressure responsive device in one direction. 7 I g 8.
- said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction
- said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being efiective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limit 9.
- said means comprising a damper ,operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving itin the opposite direction, said means including a pressure responsive device, a flexible connection member between said pressure responsive device and 'said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and means for latching said connection in one position, said means including a member in said connection and. a latching member, the two being adapted to be engaged together
- a combustion apparatus having a smoke pipe and ablower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper
- said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to dose, tormove it in one direction, and means for moving it in the opposite direction
- said means including a pressure responsive device, a flexible connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said'pressure responsive device, wherebythe said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases
- moving means being efiective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limitmovement of said pressure responsive device in one direction, and means rori atcning said connection in one position, said means incIudi-ng a rnerr-rber in said connection and a latching member, the two being adapted to be engaged together, the latching member being'positioned' outof the line of normal travel of said'connection.
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- Engineering & Computer Science (AREA)
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- Regulation And Control Of Combustion (AREA)
Description
May 18, 1948. T. F. DUIS ETAL DAMPER CONTROL Filed April 19, 1945 k 2% m m Patented May 18, 1948 DAMPER CONTROL Troy F. Duis and William'H. Moerchen,
Streator, Ill.
Application April 19, 1945, Serial No. 589,232
. 1 This invention relates to a damper and to an automatic control therefor. It has for one object to provide an automatic damper control which will operate in response to one or more variable conditions present in a furnace when combustion is occurring.
It has for another object to provide a damper control for use in connection with furnaces to which forced air is supplied and to cause the damper control to operate in response to variations in'the supply of air.
Another object is to provide a damper control arranged to operate in response to variations in suction conditions within the smoke pipe of the furnace.
Another object is to provide means for operating a damper control in response to variations in the air supply to the furnace and in response to variations of conditions in the smoke pipe of the furnace. v
Other objects will appear from time to time throughout the specification and claims.
. This invention is illustrated more or less diagrammatically in the accompanying drawings, wherein: I i 7 Figure 1 is a diagrammatic side elevation'illustrating one form of the device;
Figure 2'is a detailed frontelevation on an enlarged scale, showinga' latching mechanism;
Figure 3 is a sectional detail showing a modified form of piston controlling means; and
Figure 4 is a sectional detail showing a further modified form of piston controlling means.
Like parts are indicated by like characters throughout the specification and the drawings.
The invention, as shown, is illustrated diagrammatically in association with a furnace or combustion device and a blower or air-supplying means. As shown, the furnace is indicateddia grammatically at I. The invention may be applied to almost any type of burning device. A smoke pipe 2 conducts away the smoke and gases which result from the combustion.
A blower 3 is associated with the furnace, which forces air to the furnace. The blower may also be associated with the means for supplying fuel, but these are not shown herewith, as they form no essential part of the present invention, which may be applied to a furnace burning solid or liquid fuel, a
A damper 4 is fixed on a shaft 5, which is pivoted in the smoke pipe 2. A lever or arm 6 is also fixed on the shaft and arranged to tilt the damper, A counterweight 1 may be adjustably 12 Claims. (Cl. 236-15) 7 end. At the opposite end the arm may be perfe rated,as at 8, or otherwise shaped to receive one end of a chain 9. The chain is also preferably provided with a ring or hook-engaging means l0. Below the ring a cable Il may extend through a cylinder head I2 of a cylinder I3 which has a closed bottom 14. The cable is fixed within the cylinder toapiston l5. r a
Air'from the blower 3 moves through a pipe or conduit I6 into'the upper end of the cylinder l3, as shown in Figure 1. A pipe or conduit [1 is connected, as at I8, to the interior of the cylinder 13 and is connected, as at Hi, to the interior of the smoke pipe 2. A stop 20 may be adjustably fixed upon the cable to limit the downward movement of the piston. I
Asthe means for locking the damper in the open position, the ring In is arranged to be engaged. over a hook 2|. This hook may be carried on a support 22 mounted on the front of the furnace or boiler. As will be seen from Figure 2, the hook 2| is offset from the normally vertical positionofthechain, j
In Figure 3, instead of the piston and cylinder mechanism of Figure 1, a cylinder 23 having a head and a closed bottom 25 may be used. This cylinder has mounted within it a closed bellows 26. The cable II passes through the cylinder head 24 and is secured to the bellows. The pressure conduit I6 is in communication with the cylinder 23, as at 2|,"and the suction conduit I! is in communication with the interior of the bellows,asat28.' Y
In the modified construction of Figure 4. a'cylinder 29 is used. This cylinder has. a cylinder head 30 through which the cable ll passes. It has a closed bottom 3| It is'partially filled with a liquid .32. An inverted cup 33 is positioned within the cylinder 29 andfloats in the liquid 32. The cable II is secured to the inverted cup; The pressure conduit l 6 is incommunication with the cylinder 29, as at 34, and the suction conduit I I is vin communication withfthe interior of the inverted cup 33,asat35'. V p Although we. have shown an operative form of our invention, itwill be recognized that many changes in the form; shape and arrangement of parts can be made without departing from the spirit of the invention, and ur showing is therefore to be taken as, in a sense, diagrammatic.
.The use and operation of this invention are asfollows:
The control is associated with a fuel burning device which for purposesof simplicity has been positioned on the arm 6, preferably adjacent one called a furnace, although it might be associated 3 with a stove or any equivalent means in which fuel is burned and in connection with which means are provided for furnishing air from a blower or its equivalent.
In any combustion device the products of combustion are discharged, and for purposes of simplicity the means or opening through which they are discharged is referred to as a smoke pipe. some suction is produced in the smoke pipe. The device, whether it includes the cylinder of Figure l, the bellows of Figure 3 or the dash-pot of accidentally engaged upon it.
Figure 4, operates in substantially the same man ing the parts will stand in substantially the posig tion shown in full. lines in Figure 1.
ing and the blower is inactive. Assumingnow When the fire under the furnace is not u m- They will also stand in this position when the nois burn 1 Should the chain,,the cable or other associated partsxbreak, the counterweight i will overbalance V the opposite endof the arm 6 and will carry the cated in dotted lines in Figure 1. The degree to damper '4 to an open position such as that indiling-damper may bemoved in this direction that combustion is taking place and that the lower is operating, air under pressure will be supplied through the conduit. 16. to the cylinder above the piston, the bellows'or thei dashepot. For some installations thev connection i! from the cylinder to the. smoke. pipe Will be omitted.
Assuming for the present that the conduit I] is as shown in Figure, 1, when combustion takes place, suction is, developed in the smoke pipe and hence suction is effective in the cylinder below the piston or the dash-pot or from within the bellows. Where these. twov forces are in effect, pressure from the. blower and suction from the smoke pipe move the member to which the cable ll is'secured downwardly, and thus. theilever B is .rotated from the full lineposition of; Figure 1 -and the damper is progressively opened-,, When suction in the smoke pipe is reduced andfthc sup.- ply of air from the. blower is reduced, the piston rises and the lever B rotates,in'counterclockwise direction under 'the influence thepzcolmter- Weight, I. Sincethe. .piston'orthe equivalent members as shown in Figures. 321111111 are moved; as'a combined result of'variationsin, suction in the escape of, air-from below the. piston. or from.
within the bellows or from below theJdash-pot1'33.v
Where that is thecase and;
must .be provided. In the casejof the structure of Figure l, the closure plate i l. for the cylinder! 63 would'be omitted. In the case 'of. the form of:
Figure 3 an opening'tlo the air. would beprovided. from below the bellows and in the case of Figure i is moved somewhat tothe side from the verticalline along which'it will: ordinarilymove during operation ofthe deviceand-is engaged uponthe.
hook 2]. Should an operator, halvingengaged the hook andring, forget to disengage them, they will become automatically disengaged in thefollowing manner: Assume that the ring H] is engaged upon th'e hook 2land-that the apparatus is in operation. .Sooner or later. sufiicien t suction: or sufficient airpressure or both .will be effectiveshould the" chain be broken depends of course upon the clearance available for movement of the lever arm 6. In the. installation shown herewith. the clearance is sufilcient. to. permit the arm 6 to move to a. vertical p tion. and, thus to. carry the. damper to: the f ul1 open position.
2. In combination with afcombustion apparatus having? a; smoke'pipe and a blower, a damper for said combustion apparatus. insaidipipaand means; for automatically moving said damper, said means comprising a. damper. operating. member. provided. with moving means. tending; When free to. doso, 'to'finoveiitin one-direction, and means formovling it in theopposite direction, said means includin'g' a pressure. responsive device, a connectionv member. between. said'pressure responsivedevice and. said. damper 'movin'g means, a connection from'said blower in communication with one sideofsaidpress'ure operated device, and
a connection from'said smokepipe'in' communi-.
cation with the? opposite side of said; pressure responsive device, whereby'the said: pressure; responsive device is causedto move the connection member in one directionfas the pressure from the blower. increases and as the suction-in'the smoke pipeincre'ases', the moving means being effective to move the damper in. the "opposite direction as said pressure :and suction decrease, and: a stop on 3, In combination with a-c0mbustion appara'{ tus having a smoke-pipe and aiblow'er, aidamper for said. combustion apparatus" ihisaid pipe, and means ror automaticallymoving s'aiddampen-said.
means comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for'moving it in the opposite direction, said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connec-' tion from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive de-' vice is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and means for latching said connection in one position, said means including a member in said connection and a latching member, the two being adapted to be engaged together, the latching member being positioned out of the line of normal travel of said connection.
4. In combination with a combustion apparatus having a smoke pipe and a blower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, said means comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limit movement of said pressure responsive device in one direction, and means for latching said connection in one position, said means including a member in said connection and a latching member, the two being adapted to be engaged together, the latching member being positioned out of the line of normal travel of said connection.
5. In combination with a combustio apparatus having a smoke pipe and a blower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, said means comprising a damper operating member provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including a pressure responsive device, a flexible connection member between said pressure responsive device and said damper moving means, a connection from said blower in com munication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the 6 opposite direction as said pressure and suction decrease.
6. In combination with a combustion apparatus having a smoke pipe and a blower, ,a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being eifective to move the damper in the opposite direction as said pressure and suction decrease.
7. In combination with a combustion apparatus having a smoke pipe and a blower, a damper for said combustion apparatus in said pipe, andmeans for automatically moving said damper, said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means ten-ding, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including'a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication'vvith one side of said pressure operated device, and a connection from said. smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being efi'ective to movethe damper in the opposite direction as said pressure and suction decrease, and a stop on .said connection member efiective to limit movement of said pressure responsive device in one direction. 7 I g 8. In combination with a combustion apparatus having a smoke pipe and a blower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving it in the opposite direction, said means including a pressure responsive device, a connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being efiective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limit 9. In combination with a combustion apparatushaving a smoke pipe and; a blower; a damper for said combustion apparatus in said pipe, and means forautomatically moving said damper, said means comprising a damper ,operating member positioned outside of the smoke pipe provided with moving means tending, when free to do so, to move it in one direction, and means for moving itin the opposite direction, said means including a pressure responsive device, a flexible connection member between said pressure responsive device and 'said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said pressure responsive device, whereby the said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the moving means being effective to move the damper in the opposite direction as said pressure and suction decrease, and means for latching said connection in one position, said means including a member in said connection and. a latching member, the two being adapted to be engaged together, the latching member being positioned out of, the line of normal travel of said connection.
10. In combination with, a combustion apparatus having a smoke pipe and ablower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, said means comprising a damper operating member positioned outside of the smoke pipe provided with moving means tending, when free to dose, tormove it in one direction, and means for moving it in the opposite direction, said means including a pressure responsive device, a flexible connection member between said pressure responsive device and said damper moving means, a connection from said blower in communication with one side of said pressure operated device, and a connection from said smoke pipe in communication with the opposite side of said'pressure responsive device, wherebythe said pressure responsive device is caused to move the flexible connection member in one direction as the pressure from the blower increases and as the suction in the smoke pipe increases, the
moving means being efiective to move the damper in the opposite direction as said pressure and suction decrease, and a stop on said connection member effective to limitmovement of said pressure responsive device in one direction, and means rori atcning said connection in one position, said means incIudi-ng a rnerr-rber in said connection and a latching member, the two being adapted to be engaged together, the latching member being'positioned' outof the line of normal travel of said'connection.
11 In combination with a combustion apparatus having a smoke pipe and a blower, a damper for said combustion apparatus in said pipe, and means for automatically moving said damper, saidmeans comprising a damper operating member provided with moving means, and tending, when free to do so, to move it in one direction, and means for moving it in the op posite direction, said means including a pressure responsive device, a connection member between saidp'ressure responsive device and said damper, moving means, a connection member from said blower in communication with said pressure responsive device, whereby the said pressure responsive device is caused to move the connection member in one direction as pressure from the blower increases, the moving means being effective to move the damper in the opposite direction as said pressure'decreases, and means for latching said connection ini one position, said ,means in'cludng a member in said connection and a latching member}. the two being adapted to be engaged together, the latching member being positioned out of the line of normal travel of said connection. 7
12. In combination with a combustion appaatus having a smokepipe and a blower, a damper or said combustion apparatus located in said pipe, and means for automatically moving said damper in response to variations in pressure conditionslin said blower and in said smoke pipe, said means including a pressure responsive device, a connection to one side of said device from said blower, and a connection to the other side of device from said smoke pipe, a part of said pressure responsive device being mounted Number I Name Date 499,177 Ilhiell Jan. 1'7, 1893 1,572,277 Fessenden et al. Feb. 9, 1926 1,685,787 f en son. Oct. 2, i928 PATENTS Number Country Date Great Britain :May 16, 1935
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US589232A US2441803A (en) | 1945-04-19 | 1945-04-19 | Damper control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US589232A US2441803A (en) | 1945-04-19 | 1945-04-19 | Damper control |
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| US2441803A true US2441803A (en) | 1948-05-18 |
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| US589232A Expired - Lifetime US2441803A (en) | 1945-04-19 | 1945-04-19 | Damper control |
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| US (1) | US2441803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596907A (en) * | 1948-10-27 | 1952-05-13 | Luella E Lucas | Furnace draft regulator |
| US3381947A (en) * | 1965-09-20 | 1968-05-07 | Midland Ross Corp | Furnace vestibule having a movable ceiling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US490177A (en) * | 1893-01-17 | Apparatus for controlling the draft in boiler-chimneys | ||
| US1572277A (en) * | 1921-08-08 | 1926-02-09 | Fessenden Ellis Company | Automatic draft regulator for furnaces |
| US1685787A (en) * | 1926-12-16 | 1928-10-02 | Charles H Smoot | Regulation by proportionate pressure and apparatus therefor |
| GB428640A (en) * | 1934-02-05 | 1935-05-16 | Gas Light & Coke Co | Improvements in or relating to flue damping apparatus |
-
1945
- 1945-04-19 US US589232A patent/US2441803A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US490177A (en) * | 1893-01-17 | Apparatus for controlling the draft in boiler-chimneys | ||
| US1572277A (en) * | 1921-08-08 | 1926-02-09 | Fessenden Ellis Company | Automatic draft regulator for furnaces |
| US1685787A (en) * | 1926-12-16 | 1928-10-02 | Charles H Smoot | Regulation by proportionate pressure and apparatus therefor |
| GB428640A (en) * | 1934-02-05 | 1935-05-16 | Gas Light & Coke Co | Improvements in or relating to flue damping apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596907A (en) * | 1948-10-27 | 1952-05-13 | Luella E Lucas | Furnace draft regulator |
| US3381947A (en) * | 1965-09-20 | 1968-05-07 | Midland Ross Corp | Furnace vestibule having a movable ceiling |
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