US1425338A

US1425338A - High-pressure automatic burner governor

Info

Publication number: US1425338A
Authority: US
Inventors: William R Ray
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-01-23
Filing date: 1920-01-23
Publication date: 1922-08-08
Anticipated expiration: 1939-08-08

Description

W. R, RAY.

HIGH PRESSURE AUTOMATIC BURNER GOVERNOR. APPLICATION EILEDYIAN. 23, 1920. RENEWED JAN. 18. 1922.

Pwtented Align 2 SHEETS-SHEET I.

m. a M

W R. RAY.

HIGH PRESSURE AUTOMATIC BURNER GOVERNOR.

APPLICATION FILED JAN. 23, 1920. Emu/E0 mu, 18,1922.

- Ir m i m X W n W M v V a m W H V M Patented Aug. 8, Iii- 22,

onrreo STATES WILLIAM RgRA Y, OF SAN FRANCISCO, CALIFORNIA.

rr'ren-rnassunn AUTOMATIC Bummn GOVERNOR.

Specification of Letters Patent. .Patentd A g 1.922

Application filed' January '23, 1920, Serial at. 353,478. Rene wedJanuary 13,1922. Serial No. 530,230.'

whereby the quantity of oil delivered to theburner is regulated by variations in steam pressure. 1 v

One of the objects of the present invention is to provide an automatic burner governor whereby the quantity of oil delivered to the burner may be automatically regulated, and especially to provide a steam actuated diaphragm valve and a cooperating relief valve whereby the deliveryof oil to the burner is so regulated that a small fire will be maintained when a predetermined boiler pressure" is reached, and a large fire produced when the boiler pressure is lower. ,1 Another object of the invention is to pro vide manually actuated meansfor varying the quantity of oil delivered either when thefire is small or large thus increasing or decreasing'thesize of the fire as required. Another object of the'invention s to jpro Vide an automatic governor control of the especially character described whichv is adapted to beemployedin conjunction with an oil delivering pump having a constant "delivery.

Further objects will hereinafter appear.

The. invention consists ofthe parts and the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which-, Fig; 1 is 'a front view of the burner show;

ing the application of the automatic gover nor.

Fig. 2 is a plane section of the diaphragm actuated valve taken on line 2--2, Fig. 3.

Fig. 3 is a side elevation of the diaphrag'rn actuated valve with parts broken away to more clearly illustrate the construction.

cates in .general an oil burner, the burner employed in the present instance being of'the rotary atomizing type as shownin my former PatenflNo. 1,285,37 6, issued November. 19,

1918, and. entitled Oil burner. A burner of tliis-characterconsists of a rotary atomizing Referring to the drawings in detail, A indicup which is rotated. by means of an elec trici motor B. Oil is delivered to this cup through a pipe 2 which extends through a hollow motor shaft. Air is also delivered and is in this instance supplied by means of a fan inclosed within ahousing 3, said fan being secured on the motor shaft and rotating in unison with the atomizing cup. The I oil supplied to the cup is delivered by.,means" of'a gear pump 4:. This pump is driven from the motor shaft andis provided with an intake and an outlet connection such as shown means ofa' pipe 7 through the outlet 6 is delivered to a jacket passage 8 formed exterior of the motor housing. The oil after passing through the housing discharges at 9 into'a pipe 10 which is connected with a vertically disposed pipe 11. This pipe is connected with a return pipeline 12 by meansof a pipe 13 to permit any surplus amount of oil delivered by the 'pump 4 to be returned to the tank. Theoil required by the burner is by-passed' from the plpe 11 through a pipe 2 which is connected with a valve 1.5,Wl110h regulates the quantity of .011 delivered. Mounted on the return pipe line .12 is a pressure gauge 16, a diaphragm actuated valve C and a relief valve D. The diaphragm actuated valve consists of a housing 17 ,in the upper portion of which is mounted a diaphragm 18. This diaphragm 'is held on top of the casing 17 by means -.of a head member19 and a pressure chamber 2 0,is thereby formed above the diaphragm, the funptionof which will hereinafter be described: Connected with the head member 19 is a pipe 21,the opposite end'of which is connected with the steam dome of the boiler as indicated by 21. Positioned below the diaphragm is a. spring-22 and adapted to regulate the tension of said spring is an adjusting nut 23. Attached to the lower end of the casing 17, or formed integral thereenters the chamber .27 and its flow intochamber 28with connected pipe 30 is regulated by means of the valve 25 and also by means of a by-pass valve 31. This valve, as

as and" 6 respectively. The intake 0011- .1 nectionis connected b i with a tank of oil or 0t er suitable source of supply, and the oildischarged by the pump may be regulated by means of a screw The valves 25 and 31 therefore serve the shown in' Fig. 2, is. held against its seat'by means of a spring 32, the tension of which construction to the valve 31 inasmuch as it is held against its seat by means of aspring the tension of which is regulated by a-screw and av hand wheel" 36. The valves and 31 serve the function of automatically controlling the large fire, while the relief valve D serves the function of regulating-thesmall F or the purpose ofnlearly illustrating the function ,of the valves 25 and 31, and the valve D, it should first of all be real zed that the pump employed has a constant delivery, that is the pump is driven directly from the motor shaft and as the speed of the'motor is constant-thespeed of the pump will also be constant, henee a uniform quan- ,tity of. oil will be travelling through the pipes. Secondly,1we will assume that it, is

desired to'maintain. a pressure of 40 pounds when a large 'fire is required, and that pres;

sure of 15 pounds willbe required when the boiler is operating under a; small fire. Furthen that the diaphragm valve G. is so adjusted that it will not opeii theuvalve25 un- 35ytil-a steam pressure of,18() pounds is obtained. Whenv the'burner is operating under a large fire and the pressure in the boiler gradually increases Until '18() pounds is at-;

tained, it should beobvi ous that the pressure. in the chamber 20 exerted upon the diaphragm 18 will be suflicientto overcome the 'tension of the spring 22. The diaphragin 18 will under this condition yielda sufficient distance to permit the valve; 25 to open,the returning oil will thus find a .free escape through the valve casing-24 and k the only resistance imposed upon the free return of the oil to the tank will'be the relief valve D. This is,-however, regulated so that a back pressure of 15 pounds will be maintained on the return line andthe.sur-v plus oil will therefore be maintained under a pressure of 15 pounds, said pressure being that required for a small fire. The dia phragm valve25 will remain open as long as the steam pressure in the boiler remains at 180 pounds. It will, however, close the moment the boiler pressure drops and the pressure in the return line 12 will then immediately build up to .40 pounds as valve 25 is closed and the only escape possible forthe returning oil will thereforebe through the valve controlled passage 31. "lhis is, however, set for 40 pounds pressure and the oil on the return line will therefore build up until pounds pressure is obtained as it cannotescapej the by-pass valve 31 llIllJll;

this "pressure is obtained. The size ofthe fire Will therefore increase as the pressure ,builds up and the maximum size fire is obtained when. the pressure of 40 pounds is reached The large fire will continueuntil the maximum boiler pressure is again reached and the cycle of "operation will thus justment bein provided for the purpose of .varyin the size of the large fire, If it is desire to increase the size, of the small fire, it "will only. be necessary to increase the tension of the spring in the relief valve D so that the back pressure obtained will be greater than 15 pounds, and if it is desired to decrease the size of the small fire a ,re verse adjustmentisresorted to.

From the foregoing description it can be seen that I have provided means for automatically maintaining a large or small fire. Secondly, that manual means are provided for increasing or decreasing the size of either the large fire or the: small fire, or

both. This is of considerable importance as thesteam generating capacity of a boiler may-thus be varied for the loadre'quired or as othe"r*-conditions may I demand.

WVhile the automatic. burner-control is here shown asemployedin conjunction with .a burner of the rotarl atomizing type, it is obvious that any ot ier suitable form of I burner may be employed. r Similarly varying changes may be made within thescope of the appended claims, without" departing from the spirit of-the present invention.

Having thus described my invention, what I claim and desire to secure by Letters Patcut isl" 1, The combination with an oil burner and a pump for delivering oil thereto, of an oil delivery andreturnplpe line connected with the pump and the burner, a valve on the return line adapted to open or closethe- How of oil therethrough and a by-pass valve cooperating therewith for maintaining a back pressure on the return line when the valve is deliveryand return pipe lineconnected with the pump and the burner, a valve on the re turn line adapted to open or close the flow of oil therethrough," a by-pass valve -cooperating therewith'for maintaining a back pressure on the return line when the valve is closed, and meansfor adjusting the bypass valve to vary the back pressure.

"3. The combination with an oil burner and,

turn line. adapted to open. or close the flow.

of oil therethrough, a by-pass valve coopera ting therewith for maintaining aback pressure on the return line when the valve is closed, and pressure actuated means, for opening or closing the first named valve.

4. The combination with anoi-l burner and a pump for deliveringoil thereto, of an oil delivery and return pipe line connected with ing' therewith for maintaining a back pres-L sure on the return line when the valve is the pump and the burner, a valve on the re-,

turn line adapted to opener close the flow ofoil therethrough, a by-pass valve cooperat:

closed, pressure. actuated mea-nsfor opening? or closing the first named valve, and means for adjusting -the by-pass valve to vary the pressure. a I

5. The combination with an oil burner and a pump for delivering oil thereto, of an oil delivery and return pipe line connected with the pump and the burner, a valve on the re turn line adapted to open or close the flowj' of oil therethrough,'a by-pass valve cooperating therewith for maintaining a back pressureon the return line when the valve is closed, and afrelief valve'on the-returnline adapted to produce a back pressureon the return valve. v

6 The combination with an oil burner and a pump fol-delivering oil thereto, or an oil delivery and return p1pe line connected with the pump and the burner, a valve on the return line adapted to open enclose the flow of oil therethrough, a by-pass valve cooperating therewith for maintaining a back pressure on the return line when the'val ve is closed, a relief valve on the return line adapted to produce a back pressure on the return line independent of the by-pass valve, and means for regulating the relief-valve to increase [or decrease the back pressure producedthereby.

7. The combinationwith a boiler and an oil burner cooperating therewith, of a pump adapted to ,deliver oil to the burner; a return pipe line connectedwith the burner, a valve on said line adapted to open or close'the' flow of oil through the return' line, a diaphragm;-

actuated by steam pressure in the boiler adapted to open or close the valve, adjustable means engageable with thediaphra m for regulating the movement thereof, and a by-pass valve connected with the pressure actuated valve adapted to create a back pressure on the return line independent of-the pressure actuated valve. 5

8. The combination with a oil burner cooperating therewith,-of a pump adapted to deliver oil to the burner, a return back pressure-on-the return line independent vated valve.

justing the position of theiby-pas's 'valv line independent of the by-pass boiler and" an flow of oil through the'return line, a diaphragm actuated by steam pressure in the boiler adapted to open or close the valve, adjustable means engageable with the' dia- I phragm' for regulating the movement thereof, a by-pass valve cooperating with the pressure actuated'valve-adapted to create a of the pressure actuated fvalve and means for adjusting the position of .the by-pass valve to vary-the back pressure on there turn line: independent of the pressure actuso 9. The combination witha boiler and an oil burner cooperating therewith, of a pum adaptedto deliver oiljto-the burner, a return pipe line'connected with" the burner, a valve on said line'- adapted to d'pen or close the flow of oil through'the returnline, a diaphragm'l actuated by steamjpressure in the boiler adapted to open or close thevalva l- I adjustable means engageable with the dial: phragm. for regulating the movement ther of, a Joy-pass valve"cooperating'jwith pressure actuated valve adapted to create .back pressure on the return lineindependent 1 I of the pressure actuated valve, means for vary the back pressure 'on' the returrrvline m dependent of the pressure"; actuated valve" and a reliefxvalve on the pipe line-JadaPted,

to create a back; pressure onthe ,ret'urnline independent of the by-pass valve. and the pressure actuatedvalve. R

10. The combination with a boiler a d al; j oil burner cooperating. therewith, of a ump adapted todeliver oil to the burner, aretu'rn f pipe line connected with the lmrn'er,- a valve on said line'adapted to; open or close the flow of oil through the retu'rnlline; a diaphragm actuated by steam pressure inth'e boiler adapted to open or close the valve,

adjustablemeans engage'abl'e with, the diaphragm for regulatingzthe movement there- -of, a-by-pass valve cooperatingwith the pressure actuated valve adapted to create a backpressure on the return line independent of the pressure actuated valve, means for adjusting the position of'the bypass valve to vary theback pressure on. the return, line independent of the pressure actuated valve, a relief valve on the pipe line adapted .to v 'createa back pressure. on the return line independent of the, by-pas s"valve and the pressure actuated valve, and means for regulat.

ing the position of the relief valve to increase or decrease said back pressure.

11. The combination with a boiler and an i oil burner cooperating therewith," of an oil pump adapted to deliver oil to theburner,

return line connected with the pump and the burner, meahs on-the return line for producing a constant back pressure when a.srnall' 1 .9.

fire is required, and means actuated by the steam pressure in the boiler for producing a back pressure on the return line in excess of the first named means to produce a large fire under the boiler. y

12. The combination with a boiler and an oil burner cooperating therewith, of an oilpump adapted to deliver oil to the burner,

a return line connected with the pump and the burner, a relief valve on the return line adapted to maintain a constant back pressure thereon, and a diaphragm actuated valve on the return line adapted to produce an increased back pressure when the pressure in the boiler is below a predetermined pressure 13. The combination with a boiler and an oil burner cooperating therewith, of an-oil pump adapted to deliver oil to the burner, a

return line connected with the pump and the burner, a relief valve on the return line adapted toimaint a'in a'con'stant back:v pres sure thereon, and a diaphragm actuated valve 30 In testimony'whereof I have hereunto set my\hand inthe'presenee of'two subscribing.

witnesses, v

Witnesses:

Jomq H. HERRING, W. W. 'HEALY.

. WILLIAM R; RAY.