EP0110071A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Flow regulating device
Assignee: Fives North America Combustion UK Ltd
•
Filing: 1983-10-11
•
Granted: —
•
Expires: 2003-10-11
Abstract
Abstract Means for supplying liquid or gaseous fuel to a (I) burner includes a flow regulating device (10) having three coaxial diaphragms (13a, 14a, 15a), between each adjacent pair of which there is defined a chamber, these chambers (28, 29) being connected with respective sensing stations (45, 47) in an air flow path to the burner. Outer faces of the outer diaphragms are subjected respectively to pressures derived from sensing stations in the fuel flow path and the diaphragms are connected with one another and with a valve (19) for controlling the rate of flow of fuel.
Inventors
- 👤 Paul Mills
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 19:44
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/02; F23N1/027; F23N2225/00; F23N2225/04; F23N2225/06; F23N2233/00; F23N2233/06; F23N2235/00; F23N2235/02; F23N2235/06; F23N2235/12; F23N2235/18; F23N2235/20; F23N2235/24; F23N5/00; F23N5/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/598; Y10T137/6161; Y10T137/6164
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
223 words
I Apparatus comprising a burner (I) and conveying means defining an air passage (24) for conveying air to the burner and a fuel passage (18) for conveying fuel to the burner, wherein said conveying means comprises a hollow body (II) defining a valve orifice (23) in the fuel passage, a valve member (16) for restricting the valve orifice, the valve member being disposed within the body and movable relative thereto, two outer diaphragm assemblies (13,15) and an intermediate diaphragm assembly (14), each diaphragm assembly having a peripheral portion mounted on the body and a central portion mounted on the valve member, wherein the intermediate diaphragm assembly is disposed between the outer diaphragm assemblies to divide into a pair of intermediate chambers (28,29) a space in the body between the outer diaphragm assemblies, wherein the outer diaphragm assemblies define, in conjunction with the body, respective outer chambers (30,31) connected with the fuel passage, characterised by means defining a fuel orifice (49) in the fuel passage and means defining an air orifice (25) in the air passage, characterised in that respective sensing stations in the fuel passage at opposite sides of the fuel orifice are connected with the outer chambers and characterised in that the intermediate chambers are connected with respective sensing stations (45,47) at opposite sides of the air orifice in the air passage.
Claim 2
Dependent Claim
20 words
Apparatus according to Claim I wherein the effective areas of said outer diaphragm assemblies are at least approximately the same.
Claim 3
Dependent Claim
37 words
Apparatus according to Claim I wherein the effective areas of said outer diaphragm assemblies differ by an amount just sufficient to compensate for the effect of unbalanced pressures in the fuel acting on the valve member 06).
Claim 4
Dependent Claim
78 words
Apparatus according to Claim I wherein the body includes a valve seat (22) which defines the valve orifice, the valve member has a valve head (19) which is engageable with said valve seat to close the valve orifice and the respective effective areas of the outer diaphragm assemblies differ from one another by an amount not exceeding the area of the valve head, when viewed in the direction of movement of the valve member relative to the body.
Claim 5
Dependent Claim
27 words
Apparatus according to Claim 4 wherein the effective area of the intermediate diaphragm assembly is several times greater than the effective area of each outer diaphragm assembly.
Claim 6
Dependent Claim
46 words
Apparatus according to Claim I wherein the fuel flows into one of said outer chambers through the valve orifice, the fuel orifice is downstream of the valve orifice and the other of said outer chambers is connected with a sensing station downstream of the fuel orifice.
Claim 7
Independent Claim
134 words
A device comprising a hollow body (I I) defining a valve orifice (23), a valve member (16) for restricting the valve orifice, the valve member being disposed within the body and movable relative thereto, two outer diaphragm assemblies (13,15) and an intermediate diaphragm assembly (14), each diaphragm assembly having a peripheral portion mounted on the body and a central portion mounted on the valve member, wherein the body includes a seat (22) defining the valve orifice, the valve member has a head (19) which is engageable with the seat to close the valve orifice and wherein the effective areas of the outer diaphragm assemblies differ from each other by an amount not exceeding the area of the valve head, as viewed in the direction of movement of the valve member relative to the body.
Claim 8
Dependent Claim
15 words
Any novel feature or novel combination of features disclosed herein or in the accompanying drawing.
References Cited (Backward Citations)
GB120076A
Cited
DE430846C
Cited
US2886968A
Cited
DE834016C
Cited
US3101897A
Cited
FR1574868A
Cited
FR2264999A1
Cited
DE2708858A1
Cited
US4302178A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.