US3202202A - Pilot burner shields - Google Patents

Pilot burner shields Download PDF

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Publication number
US3202202A
US3202202A US298119A US29811963A US3202202A US 3202202 A US3202202 A US 3202202A US 298119 A US298119 A US 298119A US 29811963 A US29811963 A US 29811963A US 3202202 A US3202202 A US 3202202A
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US
United States
Prior art keywords
burner
pilot
shield
main
pilot burner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US298119A
Inventor
William J Kuhn
Paul E Maurice
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEATBATH Manufacturing CO Inc
Original Assignee
HEATBATH Manufacturing CO Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HEATBATH Manufacturing CO Inc filed Critical HEATBATH Manufacturing CO Inc
Priority to US298119A priority Critical patent/US3202202A/en
Priority to NL6402754A priority patent/NL6402754A/xx
Priority to GB13014/64A priority patent/GB1035707A/en
Priority to FR968877A priority patent/FR1518574A/en
Priority to DE19641429106 priority patent/DE1429106A1/en
Application granted granted Critical
Publication of US3202202A publication Critical patent/US3202202A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/02—Pilot flame igniters without interlock with main fuel supply
    • F23Q9/04—Pilot flame igniters without interlock with main fuel supply for upright burners, e.g. gas-cooker burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/02—Pilot flame igniters without interlock with main fuel supply
    • F23Q9/04—Pilot flame igniters without interlock with main fuel supply for upright burners, e.g. gas-cooker burners
    • F23Q9/045—Structurally associated with a main-burner

Definitions

  • This invention relates to a new and improved pilot burner shield. More particularly this invention relates to a new and improved pilot burner shield which will effectively prevent the pilot flame from being extinguished by air currents and drafts while at the same time providing effective means for insuring ignition of the main burner.
  • means are provided for shielding the pilot light wherein the pilot light cannot be extinguished by drafts or air currents which includes means for directing the gas from the main burner to the pilot burner to thereby ignite the main burner
  • a pilot burner A pilot shield is mounted in a position whereby it surrounds the pilot and extends above the pilot flame. In this mannet the pilot flame is protected from all but the top in:
  • the invention consists in the novel parts, constructions, arrangements, combinations and improvements shown and described.
  • Another object of this invention is to provide a new and improved pilot burner shield that protects the pilot flame from drafts and air currents.
  • Another object of this invention is to provide a new and improved pilot burner shield that protects the pilot flame from drafts or air currents which includes means for directing gas from the main burner and directs them to the pilot burner.
  • FiGURE 1 is an exploded perspective view of a device embodying the present invention.
  • FIGURE 2 is a top view of the device shown in FIG- URE 1.
  • FIGURE 3 is a sectional view taken along line 3-3 of FIGURE 2.
  • the present invention is adapted for use with a bar type gas burner 2 having a plurality of longitudinally spaced small gas emitting openings 4.
  • the invention is obviously not limited to any particular form of the main burner.
  • means are provided for mounting the pilot lighter and pilot burner shield in a predetermined position.
  • this means comprises a frame or base 6 having an opening therein through which the pilot burner 8 extends.
  • the pilot burner per se can be of any conventional construction and forms no part of
  • the pilot burner shield of the present invention comprises a substantially rectangular body 10 adapted to fit in close contact with the substantially rectangular base 6 on the frame of the pilot burnerlight.
  • the pilot burner shield is made of a heat resistant material and is formed from two substantially U shaped blanks of sheet metal (see FIG. 2). The legs of the U shaped members are joined together by welding as shown at 12. The invention, however, is obviously not limited to this particular form of construction.
  • the pilot shield is made of some heat resistant material such as stainless steel and its dimensions are about /a x 1 /2 x 2% inches. These dimensions are, of course, dependent upon the size of the pilot burner with which it is used and can be varied accordingly.
  • the pilot shield of the present invention has an inlet opening 14 adjacent the main burner which is of a shape and size such that the lower surface thereof is about in tangential relationship with the uppersurface 16 of the main burner tube.
  • the opening can be formed in a con venient manner such as by punching a small rectangularly can, but does not necessarily, constitute the portion ipunched out of the sidewall of the shield 10 realized in forming the opening 14.
  • the lip includes two surfaces 20 which are inclined. downwardly from the center ridge 22.
  • the lip 18 as a whole is inclined downwardly from the side of the burner shield 16.
  • the main burner is provided with at least one aperture 24 located directly beneath the lip 18 and in alignment with the ridge 22 of the lip 18.
  • the location of the lip with respect to the main burner is an important consideration.
  • the construction of the lip 18 is such that it will acciunulate gases coming from the openings in the main burner which will be ignited by the pilot burner. This result is achieved as a consequence of the relationship between the main burner 2, the pilot burner shield.
  • the pilot burner shield 10 extends upwardly so that its vertical height is above the vertical height of the pilot burner flame (see e.g. FIG. 1) and terminates in a a) discharge opening 26.
  • the burner shield in conjunction with the pilot burner light creates an upwardly moving mass of air and a pressure differential between the top and the bottom of the shield.
  • the pressure within. the shield at the bottom thereof is lower than the pressure within shield at, the upper portion thereof. Consequently there is a continuously upwardly directed mass of air within the pilot burner shield.
  • the upwardly rushing mass of air creates a venturi effect on the opening 14 which, in combination with the lip 13, creates a partial vacuum directly above the main burner 2.
  • the pilot burner shield W of the present invention effectively prevents drafts or air currents from extinguish ing the flame of the pilot burner in that the pilot light is protected in all but one direction.
  • the pilot burner shield in conjunction with the ,lipconstructi'on, accumulates gas for ignition of the main burner and the location of the lip is such that the lip is, when the main burner is ignited, located in a blue flame and thus does not collect soot and carbon black which could prevent eflective ignition of the main burner.
  • a main gas burner including at least one gas outlet, a pilot burner having at least one gas outlet, a substantially impervious shield open at the top, means for mounting said pilot burner adjacent to and extending slightly higher than said main burner, said shield being mounted in surrounding relationship to said pilot burner and extending considerably higher than said pilot burner, said shield having an opening therein, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a 2.
  • said means protruding from the shield is a lip at the top of said opening which extends toward said main burner, said lip in cluding two inclined surfaces forming a ridge in said lip.
  • a main gas burner having at least one gas outlet and a pilot gas burner having at least one gas outlet, a substantially impervious shield open at the top mounted in surrounding relationship to said pilot burner and extending substantially above said pilot burner for protecting said pilot burner flame from drafts, means for mounting said pilot burner within said shield adjacent to and extending slightly higher than said gas outlet in the main burner, an opening in said shield, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being adjacent to and slightly higher than said gas outlet in said main burner so that gas from the main burner is sucked through said opening and directed to said pilot burner.
  • a main gas burner and a pilot gas burner means for mounting said pilot gas burner adjacent to and extending slightly higher than said main gas burner, a substantially impervious shield for the pilot burner flame, said shield being mounted in surrounding relationship to and extending substantially above said pilot burner and having an open end at the upper end thereof, said shield having a relatively small opening in the side adjacent to said main burner, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a position higher than said main burner and lower than the upper end of said pilot burner so that gas is drawn from the main burner into said small opening and towards said pilot burner flame.
  • a main gas burner and a pilot gas burner means for mounting said pilot gas burner adjacent to and extending above said main gas burner, a substantially impervious shield for the pilot burner flame, said shield being mounted in surrounding relationship to and extending substantially above said pilot burner, said shield having a relatively small inlet opening in the side adjacent to said main burner, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a position higher than said main burner and lower than the upper end of said pilot burner, and a discharge opening in said shield positioned so that the lowermost extremity thereof is substantially above the highest extremity of said inlet opening so that a low pressure zone is created adjacent to said pilot burner opening inside of said shield and a high pressure Zone is created adjacent said discharge opening.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Description

1965 w. J. KUHN ETAL 3,202,202
PILOT BURNER SHIELDS Filed July 29, 1963 2 Sheets-Sheet .1
F I G- 2 3 Q 0 /2 /2 20 }4 Z ZZ,
4i INVENTOR.
WILLIAM J. KUHN 3 PAUL E. MAURICE ATTCJRNEYS 2 Sheets-Sheet 2 Filed July 29, 1963 INVENTO WILLIAM J. KUHN PAUL E. MAURICE at the desired time. is mounted in a position adjacent the main burner.
United States Patent 3,202,2tl2 PILGT BURNER SHIELDS William J. Kuhn, Springfield, and Paul E. Maurice, Ludlow, Mass, assignors to I leathath Manufacturing (Zornpany, Ind, Springfield, Mass, a corporation of Massachusetts Filed July 29, 1%3, Ser. No. 298,119 5 Claims. (Cl. 158-115) This invention relates to a new and improved pilot burner shield. More particularly this invention relates to a new and improved pilot burner shield which will effectively prevent the pilot flame from being extinguished by air currents and drafts while at the same time providing effective means for insuring ignition of the main burner.
In many installations it is essential that means be provided for preventing the extinguishment of the pilot flame used in igniting a burner. For example, where the burners are in an inaccessible location the extinguishment of the pilot light not only causes a great inconvenience, but also creates a potentially dangerous situation. Thus in brooders, for example, it is necessary that the brooder be maintained at a predetermined temperature. It is also necessary in such installations that the main burner be ignited when desired. However, while protection of the pilot flame is a desideratum such protection cannot be at the expense of effective ignition of main burner. The present invention provides a new and improved pilot shield which satisfies both objectives.
In accordance with this invention means are provided for shielding the pilot light wherein the pilot light cannot be extinguished by drafts or air currents which includes means for directing the gas from the main burner to the pilot burner to thereby ignite the main burner As embodied herein, a pilot burner A pilot shield is mounted in a position whereby it surrounds the pilot and extends above the pilot flame. In this mannet the pilot flame is protected from all but the top in:
The invention consists in the novel parts, constructions, arrangements, combinations and improvements shown and described.
In view of the foregoing it is an object of this invention to provide a new and improved pilot burner shield which protects the pilot burner from extinguishment by drafts or air currents and which also eflectively ignites the main burner.
Another object of this invention is to provide a new and improved pilot burner shield that protects the pilot flame from drafts and air currents.
Another object of this invention is to provide a new and improved pilot burner shield that protects the pilot flame from drafts or air currents which includes means for directing gas from the main burner and directs them to the pilot burner.
Additional objects and advantages of the invention will be set forth in the description which follows and in part will be obvious from the description or may be learned from practice of the invention, the objects and advantages being realized and attained by means of the the present invention.
instrumentalities and combinations particularly pointed out in the claims.
The accompanying drawings which are incorporated in and constitute a part of this specification illustrate one embodiment of the invention and together with the description serve to explain the principles of the invention.
Of the drawing:
FiGURE 1 is an exploded perspective view of a device embodying the present invention.
FIGURE 2 is a top view of the device shown in FIG- URE 1.
FIGURE 3 is a sectional view taken along line 3-3 of FIGURE 2.
As shown in FIGURE 1 the present invention is adapted for use with a bar type gas burner 2 having a plurality of longitudinally spaced small gas emitting openings 4. The invention is obviously not limited to any particular form of the main burner.
In accordance with this invention means are provided for mounting the pilot lighter and pilot burner shield in a predetermined position.
As embodied, this means comprises a frame or base 6 having an opening therein through which the pilot burner 8 extends. The pilot burner per se can be of any conventional construction and forms no part of The pilot burner shield of the present invention comprises a substantially rectangular body 10 adapted to fit in close contact with the substantially rectangular base 6 on the frame of the pilot burnerlight. As illustrated herein, the pilot burner shield is made of a heat resistant material and is formed from two substantially U shaped blanks of sheet metal (see FIG. 2). The legs of the U shaped members are joined together by welding as shown at 12. The invention, however, is obviously not limited to this particular form of construction.
Conveniently the pilot shield is made of some heat resistant material such as stainless steel and its dimensions are about /a x 1 /2 x 2% inches. These dimensions are, of course, dependent upon the size of the pilot burner with which it is used and can be varied accordingly.
The pilot shield of the present invention has an inlet opening 14 adjacent the main burner which is of a shape and size such that the lower surface thereof is about in tangential relationship with the uppersurface 16 of the main burner tube. The opening can be formed in a con venient manner such as by punching a small rectangularly can, but does not necessarily, constitute the portion ipunched out of the sidewall of the shield 10 realized in forming the opening 14. The lip includes two surfaces 20 which are inclined. downwardly from the center ridge 22. The lip 18 as a whole is inclined downwardly from the side of the burner shield 16.
As embodied and shown most clearly in FIG. 3 the main burner is provided with at least one aperture 24 located directly beneath the lip 18 and in alignment with the ridge 22 of the lip 18. For reasons to be more fully set forth hereinafter the location of the lip with respect to the main burner is an important consideration.
The construction of the lip 18 is such that it will acciunulate gases coming from the openings in the main burner which will be ignited by the pilot burner. This result is achieved as a consequence of the relationship between the main burner 2, the pilot burner shield.
The pilot burner shield 10 extends upwardly so that its vertical height is above the vertical height of the pilot burner flame (see e.g. FIG. 1) and terminates in a a) discharge opening 26. In this way the burner shield in conjunction with the pilot burner light creates an upwardly moving mass of air and a pressure differential between the top and the bottom of the shield. Thus the pressure within. the shield at the bottom thereof is lower than the pressure within shield at, the upper portion thereof. Consequently there is a continuously upwardly directed mass of air within the pilot burner shield. The upwardly rushing mass of air creates a venturi effect on the opening 14 which, in combination with the lip 13, creates a partial vacuum directly above the main burner 2.
Thus when gas is fed into the main burner tube 2 and passes through opening 24 it is immediately drawn upwardly as a result of the partial vacuum and directed by the inclined surfaces and the ridge 22 of the lip 18 through the opening 14 and toward the pilot burner 8, and the flue gases are discharged through the discharge opening 26. The gas of the main burner is ignited therefore whereupon the flame travels the length of the main burner tube.
The pilot burner shield W of the present invention effectively prevents drafts or air currents from extinguish ing the flame of the pilot burner in that the pilot light is protected in all but one direction. In accomplishing this result the pilot burner shield, in conjunction with the ,lipconstructi'on, accumulates gas for ignition of the main burner and the location of the lip is such that the lip is, when the main burner is ignited, located in a blue flame and thus does not collect soot and carbon black which could prevent eflective ignition of the main burner.
It is understood that the invention in its broader aspects is not limited to the specific elements shown and described, but also includes within the scope of the accompanying claims any departures made from such elements which do not sacrifice its chief advantages.
What is claimed is:
'1. In combination, a main gas burner including at least one gas outlet, a pilot burner having at least one gas outlet, a substantially impervious shield open at the top, means for mounting said pilot burner adjacent to and extending slightly higher than said main burner, said shield being mounted in surrounding relationship to said pilot burner and extending considerably higher than said pilot burner, said shield having an opening therein, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a 2. A device as defined in claim 1 wherein said means protruding from the shield is a lip at the top of said opening which extends toward said main burner, said lip in cluding two inclined surfaces forming a ridge in said lip.
3. In combination, a main gas burner having at least one gas outlet and a pilot gas burner having at least one gas outlet, a substantially impervious shield open at the top mounted in surrounding relationship to said pilot burner and extending substantially above said pilot burner for protecting said pilot burner flame from drafts, means for mounting said pilot burner within said shield adjacent to and extending slightly higher than said gas outlet in the main burner, an opening in said shield, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being adjacent to and slightly higher than said gas outlet in said main burner so that gas from the main burner is sucked through said opening and directed to said pilot burner.
t. In combination, a main gas burner and a pilot gas burner, means for mounting said pilot gas burner adjacent to and extending slightly higher than said main gas burner, a substantially impervious shield for the pilot burner flame, said shield being mounted in surrounding relationship to and extending substantially above said pilot burner and having an open end at the upper end thereof, said shield having a relatively small opening in the side adjacent to said main burner, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a position higher than said main burner and lower than the upper end of said pilot burner so that gas is drawn from the main burner into said small opening and towards said pilot burner flame.
5. in combination, a main gas burner and a pilot gas burner, means for mounting said pilot gas burner adjacent to and extending above said main gas burner, a substantially impervious shield for the pilot burner flame, said shield being mounted in surrounding relationship to and extending substantially above said pilot burner, said shield having a relatively small inlet opening in the side adjacent to said main burner, means protruding from said shield above the opening and extending towards the main burner, for deflecting gas from the main burner towards the pilot burner, said opening being in a position higher than said main burner and lower than the upper end of said pilot burner, and a discharge opening in said shield positioned so that the lowermost extremity thereof is substantially above the highest extremity of said inlet opening so that a low pressure zone is created adjacent to said pilot burner opening inside of said shield and a high pressure Zone is created adjacent said discharge opening.
References Cited by the Examiner UNITED STATES PATENTS 799,856 9/ O5 Willson. 1,679,298 7/28 Evans 158113 X 1,996,434- 4/35 ODowd. 2,896,703 7/59 Weber 158-115 3,122,195 2/64 Kimmel et al 1587 FREDERICK L. MATTESON, JR., PrimaryExaminer.
JAMES W. WESTHAVER, CHARLES SUKALO,
Examiners.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,202,202 August 24, 1965 William J. Kuhn et a1.
It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 4, line 52, for 799,856"-read 799,956
Signed and sealed this 26th day of April 1966.
(SEAL) Attest:
ERNEST W. SWIDER Attesting Officer EDWARD J. BRENNER Commissioner of Patents

Claims (1)

1. IN COMBINATION, A MAIN GAS BURNER INCLUDING AT LEAST ONE GAS OUTLET, A PILOT BURNER HAVING AT LEAST ONE GAS OUTLET, A SUBSTANTIALLY IMPERVIOUS SHIELD OPEN AT THE TOP, MEANS FOR MOUNTING SAID PILOT BURNER ADJACENT TO AND EXTENDING SLIGHTLY HIGHER THAN SAID MAIN BURNER, SAID SHIELD BEING MOUNTED IN SURROUNDING RELATIONSHIP TO SAID PILOT BURNER AND EXTENDING CONSIDERABLY HIGHER THAN SAID PILOT BURNER, SAID SHIELD HAVING AN OPENING THEREIN, MEANS PROTRUDING FROM SAID SHIELD ABOVE THE OPENING AND EXTENDING TOWARDS THE MAIN BURNER, FOR DEFLECTING GAS FROM THE MAIN
US298119A 1963-07-29 1963-07-29 Pilot burner shields Expired - Lifetime US3202202A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US298119A US3202202A (en) 1963-07-29 1963-07-29 Pilot burner shields
NL6402754A NL6402754A (en) 1963-07-29 1964-03-16
GB13014/64A GB1035707A (en) 1963-07-29 1964-03-26 Combination main burner and pilot burner
FR968877A FR1518574A (en) 1963-07-29 1964-03-26 Gas pilot flame shields associated with gas burners
DE19641429106 DE1429106A1 (en) 1963-07-29 1964-06-19 Shield for pilot burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US298119A US3202202A (en) 1963-07-29 1963-07-29 Pilot burner shields

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US3202202A true US3202202A (en) 1965-08-24

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US298119A Expired - Lifetime US3202202A (en) 1963-07-29 1963-07-29 Pilot burner shields

Country Status (4)

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US (1) US3202202A (en)
DE (1) DE1429106A1 (en)
GB (1) GB1035707A (en)
NL (1) NL6402754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275555A (en) * 1992-08-14 1994-01-04 Goodridge Mark S Holding and covering a gas pilot

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2922169C2 (en) * 1979-05-31 1985-12-12 Buderus Ag, 6330 Wetzlar Pilot and pilot flame burners

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US799856A (en) * 1904-10-21 1905-09-19 Charles Lemale Internal-combustion turbo-motor.
US1679298A (en) * 1927-04-05 1928-07-31 Silas M Evans Gas burner
US1996434A (en) * 1930-06-26 1935-04-02 Standard Gas Equipment Corp Liquid heating apparatus
US2896703A (en) * 1954-08-04 1959-07-28 American Gas Ass Gas pilot burner
US3122195A (en) * 1960-07-27 1964-02-25 Ohio Foundry & Mfg Company Pilot shield for gas heater pilot burners

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US799856A (en) * 1904-10-21 1905-09-19 Charles Lemale Internal-combustion turbo-motor.
US1679298A (en) * 1927-04-05 1928-07-31 Silas M Evans Gas burner
US1996434A (en) * 1930-06-26 1935-04-02 Standard Gas Equipment Corp Liquid heating apparatus
US2896703A (en) * 1954-08-04 1959-07-28 American Gas Ass Gas pilot burner
US3122195A (en) * 1960-07-27 1964-02-25 Ohio Foundry & Mfg Company Pilot shield for gas heater pilot burners

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275555A (en) * 1992-08-14 1994-01-04 Goodridge Mark S Holding and covering a gas pilot

Also Published As

Publication number Publication date
DE1429106A1 (en) 1968-10-31
GB1035707A (en) 1966-07-13
NL6402754A (en) 1965-02-01

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