US3552656A - Sprayers - Google Patents
Sprayers Download PDFInfo
- Publication number
- US3552656A US3552656A US770007A US3552656DA US3552656A US 3552656 A US3552656 A US 3552656A US 770007 A US770007 A US 770007A US 3552656D A US3552656D A US 3552656DA US 3552656 A US3552656 A US 3552656A
- Authority
- US
- United States
- Prior art keywords
- tube
- passages
- supply passages
- sprayer
- passage
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
Definitions
- a sprayer comprising a body, a tube mounted 239/4193 transversely across the body, the tube having a transverse slot, [52] [1.8. CI 97 239/60; the Supply passages to opposite ends of the tube re Spe 61y, a F23d 11/16 common inlet communicating with the supply passages and a 239/597 further p of p g between ⁇ he pp y p g and p 1e 0 ar posite sides of the inlet respectively.
- the object of the invention is to provide a sprayer of the kind referred to in a convenient and effective form.
- a sprayer of the kind specified according to the present invention is characterized in that the ends of the tube communicate with respective supply passages in a body, the body having an inlet passage common to the two supply passages, and the body having two further passages affording communication between the supply passages and opposite sides of the inlet passage respectively, the position of the communication of the further passages with the inlet passage being adjacent to, but upstream of the junction between the supply passages and the inlet passage.
- FIGS. 1 and 2 are respective side .elevation and plan views of a sprayer constructed in accordance with this invention.
- FIG. 3 is an end elevation view
- the sprayer illustrated is intended for use for supplying liquid fuel to a gas turbine engine and produces a finely atmoized substantially flat fan-shaped spray of fuel for combustion, this being particularly suitable during starting conditions in the engine.
- the sprayer comprises a body 8 which is secured by means of a threaded sleeve 9 to a further part 10.
- the part 10 has a pair of fuel and air inlet drillings ll, 12 communicating with external pipes l3, l4 and there is defined between the parts 8, 9 and 10 a plurality of spaces 15 defined between teeth on the parts 8 and 10.
- the passage 12 communicates with these spaces.
- the body 8 has a transverse slot 16. at its end remote from the part 10. Extending across the slot 16 is a short length of small bore tube 17 which is conveniently made from fine metal tubing. Intermediate its ends the tube 17 is provided with a transverse slot 18 and the ends of the tube 17 communicate with respective chambers 19 defined within the body 8. Cover plates 20 are also provided to form walls of the chambers 19 respectively.
- Communicating with the chambers 19 are respectively supply passages 21, in the body 8, and these communicate with a short inlet passage 22 to which fuel to be sprayed is supplied through the fuel inlet drilling 11 in the part 10.
- the body 8 also has two further passages 23 which are smaller than the supply passages 21 to the chambers 19. There is thus a greater resistance to flow of fuel through these.
- the passages 23 communicate with the passages 21 respectively at positions near, but upstream of the chambers 19, and at their other end the passages 23 communicate with the inlet passage 22 at opposite sides thereof respectively and at a position adjacent to, but upstream of the junction between the passages 21 and the inlet passage 22.
- Fuel supplied through the fuel inlet drilling 11 to the inlet passage 22 will flow along one of the passages 21. in preference to the other, this being the result of boundary layer attraction between the liquid and the wall ofthe inlct passage.
- the flow of fuel along one of the passages 21 will result in the corresponding passage 23 being pressurized and there will be -a delay occasioned by the resistance to flow offered by the Fuel flowing along the supply passages 21 will enter the.
- the pattern of the spray will be generally of fan shape but the direction of emission changes during operation.
- the air delivered through the passage 12 flows through the spaces 15 and enters a passage 24 in the body 8.
- This passage 24 meets a passage 25 also in the body 8. which extends behind the tube 17 to permit discharge of the air from this point.
- the addition of air tends to improve atomization of the fuel.
- a sprayer comprising a body, a tube mounted in the body and extending transversely of its length, a transverse slot formed in the tube intermediate its ends, respective supply passages in the body communicating with opposite endsof the tube respectively, the body having asingle inlet passage communicating with one end of each of the two supply passages. and the body having two further passagesaffording communication between the supply passages, intermediate their ends, and opposite sides of the inlet passage respectively, the position of communication of the further passages with the inlet passage being adjacent to, but upstream of the junction between the supply passages and the inlet.
- a sprayer as claimed in claim l in which the supply passages terminate in chambers respectively, the tube ends extending into these respectively and the further passages communicating with the chambers respectively.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
A sprayer comprising a body, a tube mounted transversely across the body, the tube having a transverse slot, the supply passages to opposite ends of the tube respectively, a common inlet communicating with the supply passages and a further pair of passages between the supply passages and opposite sides of the inlet respectively.
Description
I United States Patent 3,552,656
[72] Inventor Robert Thomas John Skinner References Cited Kenilworth. England UNITED STATES PATENTS [21 1 App]. No. 770,007 3,447 757 6/1969 Place et al. 239/597 22 Filed d i 13? FOREIGN PATENTS I 1 Pawn? 1 1 029 521 5/1966 0 d reat Britain 239/601 [731 Assgnec 27252523 222E23 e 1,104,277 2/1968 Great Britain 239/597 Primary Examiner-Lloyd L. King Attorney-Holman, Glascock, Downing & Seebold 1541 SPRAYERS 3 Claims, 3 Drawing Fi ABSTRACT: A sprayer comprising a body, a tube mounted 239/4193 transversely across the body, the tube having a transverse slot, [52] [1.8. CI 97 239/60; the Supply passages to opposite ends of the tube re Spe 61y, a F23d 11/16 common inlet communicating with the supply passages and a 239/597 further p of p g between {he pp y p g and p 1e 0 ar posite sides of the inlet respectively.
PATENTED JAN 5 I97! SHEET 3 BF 3 ATONEYS SPRAYERS This invention relates to sprayers particularly though not exclusively for spraying liquid fuel into gas turbine engines, and of the kind in which liquidto be sprayed is delivered through opposite ends of a tube in which, intermediate the ends, a transverse slot is provided for emission of the liquid.
The object of the invention is to provide a sprayer of the kind referred to in a convenient and effective form.
A sprayer of the kind specified according to the present invention is characterized in that the ends of the tube communicate with respective supply passages in a body, the body having an inlet passage common to the two supply passages, and the body having two further passages affording communication between the supply passages and opposite sides of the inlet passage respectively, the position of the communication of the further passages with the inlet passage being adjacent to, but upstream of the junction between the supply passages and the inlet passage.
The invention will now be described by way of example with reference to the accompanying drawings in which:
FIGS. 1 and 2 are respective side .elevation and plan views of a sprayer constructed in accordance with this invention; and
FIG. 3 is an end elevation view,
The sprayer illustrated is intended for use for supplying liquid fuel to a gas turbine engine and produces a finely atmoized substantially flat fan-shaped spray of fuel for combustion, this being particularly suitable during starting conditions in the engine. l
The sprayer comprises a body 8 which is secured by means of a threaded sleeve 9 to a further part 10. The part 10 has a pair of fuel and air inlet drillings ll, 12 communicating with external pipes l3, l4 and there is defined between the parts 8, 9 and 10 a plurality of spaces 15 defined between teeth on the parts 8 and 10. The passage 12 communicates with these spaces.
The body 8 has a transverse slot 16. at its end remote from the part 10. Extending across the slot 16 is a short length of small bore tube 17 which is conveniently made from fine metal tubing. Intermediate its ends the tube 17 is provided with a transverse slot 18 and the ends of the tube 17 communicate with respective chambers 19 defined within the body 8. Cover plates 20 are also provided to form walls of the chambers 19 respectively.
Communicating with the chambers 19 are respectively supply passages 21, in the body 8, and these communicate with a short inlet passage 22 to which fuel to be sprayed is supplied through the fuel inlet drilling 11 in the part 10.
The body 8 also has two further passages 23 which are smaller than the supply passages 21 to the chambers 19. There is thus a greater resistance to flow of fuel through these.
The passages 23 communicate with the passages 21 respectively at positions near, but upstream of the chambers 19, and at their other end the passages 23 communicate with the inlet passage 22 at opposite sides thereof respectively and at a position adjacent to, but upstream of the junction between the passages 21 and the inlet passage 22. I
Fuel supplied through the fuel inlet drilling 11 to the inlet passage 22 will flow along one of the passages 21. in preference to the other, this being the result of boundary layer attraction between the liquid and the wall ofthe inlct passage. The flow of fuel along one of the passages 21 will result in the corresponding passage 23 being pressurized and there will be -a delay occasioned by the resistance to flow offered by the Fuel flowing along the supply passages 21 will enter the.
The pattern of the spray will be generally of fan shape but the direction of emission changes during operation.
The air delivered through the passage 12 flows through the spaces 15 and enters a passage 24 in the body 8. This passage 24 meets a passage 25 also in the body 8. which extends behind the tube 17 to permit discharge of the air from this point. The addition of air tends to improve atomization of the fuel.
I claim: j
1. A sprayer comprising a body, a tube mounted in the body and extending transversely of its length, a transverse slot formed in the tube intermediate its ends, respective supply passages in the body communicating with opposite endsof the tube respectively, the body having asingle inlet passage communicating with one end of each of the two supply passages. and the body having two further passagesaffording communication between the supply passages, intermediate their ends, and opposite sides of the inlet passage respectively, the position of communication of the further passages with the inlet passage being adjacent to, but upstream of the junction between the supply passages and the inlet.
2. A sprayer as claimed in claim l in which the supply passages terminate in chambers respectively, the tube ends extending into these respectively and the further passages communicating with the chambers respectively.
3. A sprayer as claimed in either of claims 1 and 2 in which the body also has an air supply passage whereby air can reach a region of the tube behind the slot therein.
Claims (3)
1. A sprayer comprising a body, a tube mounted in the body and extending transversely of its length, a transverse slot formed in the tube intermediate its ends, respective supply passages in the body communicating with opposite ends of the tube respectively, the body having a single inlet passage communicating with one end of each of the two supply passages, and the body having two further passages affording communication between the supply passages, intermediate their ends, and opposite sides of the inlet passage respectively, the position of communication of the further passages with the inlet passage being adjacent to, but upstream of the junction between the supply passages and the inlet.
2. A sprayer as claimed in claim 1 in which the supply passages terminate in chambers respectively, the tube ends extending into these respectively and the further passages communicating with the chambers respectively.
3. A sprayer as claimed in either of claims 1 and 2 in which the body also has an air supply passage whereby air can reach a region of the tube behind the slot therein.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77000768A | 1968-10-23 | 1968-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3552656A true US3552656A (en) | 1971-01-05 |
Family
ID=25087180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US770007A Expired - Lifetime US3552656A (en) | 1968-10-23 | 1968-10-23 | Sprayers |
Country Status (1)
Country | Link |
---|---|
US (1) | US3552656A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1029521A (en) * | 1964-01-09 | 1966-05-11 | Lucas Industries Ltd | Spray nozzles |
GB1104277A (en) * | 1965-12-01 | 1968-02-21 | Lucas Industries Ltd | Spray nozzles |
US3447757A (en) * | 1967-02-28 | 1969-06-03 | Lucas Industries Ltd | Spray nozzles |
-
1968
- 1968-10-23 US US770007A patent/US3552656A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1029521A (en) * | 1964-01-09 | 1966-05-11 | Lucas Industries Ltd | Spray nozzles |
GB1104277A (en) * | 1965-12-01 | 1968-02-21 | Lucas Industries Ltd | Spray nozzles |
US3447757A (en) * | 1967-02-28 | 1969-06-03 | Lucas Industries Ltd | Spray nozzles |
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