US4579143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and purge valve for atomization of heavy fuel oil for combustion
Assignee: Maxon Corp
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Filing: 1984-04-12
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Granted: 1986-04-01
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Expires: 2004-04-12
Abstract
Abstract The improved control and purge valve of the present invention is useful for the atomization of heavy fuel oil for combustion. The present control and purge valve is operable between closed, purging, and open positions, and includes an elongated valve body having a disc carrier disposed therein. The disc carrier preferably comprises a plurality of closure and orifice means thereon for opening or closing internally disposed steam exit, steam bypass exit, and oil exit ports to effect the closed, purging, and open positions of the valve of the present invention.
Inventors
- 👤 Marvin J. Rollins
- 👤 William P. Coppin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:15
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/18; F23K5/147; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/87249
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
341 words
An improved control and purge valve for atomization of heavy fuel oil for combustion, said valve operable between closed, purging, and open positions and comprising: an elongated valve body, said valve body having a longitudinally disposed central bore for containing valve disc carrier means and carrying steam inlet means, steam outlet means, oil inlet means, and oil and steam purge outlet means externally disposed thereon; said valve body further having an internally disposed steam entry port, an internally disposed steam bypass entry port, and an internally disposed oil entry port, and also having disposed respecting oppositely from said entry ports an internally disposed steam exit port, an internally disposed bypass exit port, and an internally diposed oil exit port, said entry and exit ports disposed transversely of and opening into said central bore; selectively operable purge means connecting said steam inlet means and said oil and steam purge outlet means through said steam bypass entry port for purging said oil and steam purge outlet means when the valve is in the purging position; said valve disc carrier means disposed within said central bore of said valve body for operation between the closed, purging and open positions, and including respective closure and orifice means thereon for: (a) closing each of said steam entry, steam bypass entry, and oil entry ports when in the closed position; (b) opening at least said steam bypass port and closing said oil entry port when in the purging position, and (c) opening said steam entry and oil entry ports and closing said steam bypass entry port when in the open position; steam entry port, steam bypass entry port, and oil entry port valve followers disposed within said valve body for snug and operative engagement with said respective closure and orifice means of said valve disc carrier mean, having openings therein disposed for transverse communication into said central bore; and valve actuating means for providing selected longitudinal movement of said valve disc carrier within said valve central bore to effect thereby the closed, purging, and open positions thereof.
Claim 2
Dependent Claim
341 words
An improved control and purge valve for atomization of heavy fuel oil for combustion, said valve operable between closed, purging, and open positions and comprising: an elongated valve body, said valve body having a longitudinally disposed central bore for containing valve disc carrier means and carrying steam inlet means, steam outlet means, oil inlet means, and oil and steam purge outlet means externally disposed thereon; said valve body further having an internally disposed steam entry port, an internally disposed steam bypass entry port, and an internally disposed oil entry port, and also having disposed respecting oppositely from said entry ports an internally disposed steam exit port, an internally disposed bypass exit port, and an internally diposed oil exit port, said entry and exit ports disposed transversely of and opening into said central bore; selectively operable purge means connecting said steam inlet means and said oil and steam purge outlet means through said steam bypass entry port for purging said oil and steam purge outlet means when the valve is in the purging position; said valve disc carrier means disposed within said central bore of said valve body for operation between the closed, purging and open positions, and including respective closure and orifice means thereon for: (a) closing each of said steam entry, steam bypass entry, and oil entry ports when in the closed position; (b) opening at least said steam bypass port and closing said oil entry port when in the purging position, and (c) opening said steam entry and oil entry ports and closing said steam bypass entry port when in the open position; steam entry port, steam bypass entry port, and oil entry port valve followers disposed within said valve body for snug and operative engagement with said respective closure and orifice means of said valve disc carrier mean, having openings therein disposed for transverse communication into said central bore; and valve actuating means for providing selected longitudinal movement of said valve disc carrier within said valve central bore to effect thereby the closed, purging, and open positions thereof.
Claim 3
Dependent Claim
35 words
The improved control and purge valve of claim 1 wherein the closed, purging, and open positions of the valve are effected by successive sliding extention of said valve disc carrier within said valve central bore.
Claim 4
Dependent Claim
24 words
The improved control and purge valve of claim 1 wherein said valve disc carrier means carries a plurality of closure and orifice discs thereon.
Claim 5
Dependent Claim
166 words
The improved control and purge valve of claim 3 wherein said closure and orifice discs comprise in sequential array from the distal to the proximal end of said disc carrier: (a) a first closure disc for closing said oil entry port when in the closed position; (b) a second closure disc for closing said steam bypass entry port when in the closed position and for closing said oil entry port when in the purging position; (c) a first orifice disc for opening said steam bypass entry port when in the purging position and for opening said oil entry port when in the open position; (d) a third closure disc for closing said steam entry port when in the closed position and for closing said steam bypass entry port when in the open position; (e) a fourth closure disc for closing said steam entry port when in the purging position; and (f) a second orifice disc for opening said steam entry port when in the open position.
Claim 6
Dependent Claim
54 words
The improved control and purge valve of claim 4 wherein said fourth closure disc has an orifice therein which is substantially smaller in diameter than the orifice of said first orifice disc, whereby a limited amount of steam is permitted to exit the valve from the steam outlet means when in the purging position.
Claim 7
Dependent Claim
39 words
The improved control and purge valve of claim 1 wherein said valve followers are engaged by respective springs to urge said valve followers into snug and operative engagement with said closure and orifice means on said valve disc carrier.
Claim 8
Dependent Claim
40 words
The improved control and purge valve of claim 1 wherein said steam exit port communicates with said steam outlet means, and said steam bypass exit port and said oil exit port communicate with said oil and steam purge outlet means.
Claim 9
Dependent Claim
21 words
The improved control and purge valve of claim 7 wherein said steam exit port communicates directly with said steam outlet means.
Claim 10
Dependent Claim
21 words
The improved control and purge valve of claim 7 wherein said oil exit port communicates directly with said oil outlet means.
Claim 11
Dependent Claim
43 words
The improved control and purge valve of claim 1 further comprising seat rings disposed within each of said steam exit port, steam bypass exit port, and said oil exit port for engagement with said closure and orifice means of said valve disc carrier.
Claim 12
Dependent Claim
23 words
The improved control and purge valve of claim 1 wherein each of said valve followers is sealed with an O-ring to prevent leakage.
Claim 13
Dependent Claim
25 words
The improved control and purge valve of claim 3 wherein each of said closure and orifice discs is sealed with an O-ring to prevent leakage.
Claim 14
Dependent Claim
23 words
The improved control and purge valve of claim 10 wherein each of said seat rings is sealed with an O-ring to prevent leakage.
Claim 15
Dependent Claim
30 words
The improved control and purge valve of claim 1 further comprising oil bypass means for recirculating oil to an oil supply when in either of the closed or purging positions.
Claim 16
Dependent Claim
20 words
The improved control and purge valve of claim 14 wherein said oil bypass means communicates with said oil inlet means.
Claim 17
Dependent Claim
119 words
The improved control and purge valve of claim 15 wherein said oil bypass means comprises a chamber having disposed therein a relief plunger including a plunger head thereon, said plunger head seated in said chamber, said relief plunger having a spring engaging therewith disposed to urge said relief plunger head into seated disposition with a pressure which is less than the oil pressure when the oil entry port is closed by said closure and orifice means, whereby when the valve is in the closed or purging positions the oil pressure within the oil bypass means chamber is sufficient to push said relief plunger head away from its seated position and thereby to recirculate the oil to the supply thereof.
Claim 18
Dependent Claim
51 words
The improved control and purge valve of claim 1 wherein valve actuating means comprises a two stage tandem fluidic cylinder, each stage of which extends in response to a four-way solenoid valve to move the valve of the present invention from the closed, to the purging, and to the open position.
Claim 19
Dependent Claim
62 words
The improved control and purge valve of claim 17 further comprising a return spring disposed inside said tandem cylinder for retracting the valve of the present invention from the open, to the purging, and to the closed position, whereby the valve of the present invention is urged into closed position in the event of a failure of pressure to said fluidic cylinder.
Claim 20
Dependent Claim
73 words
The improved control and purge valve of claim 1 wherein said purge means includes a first purge chamber disposed externally of said valve body and longitudinally therein respectively connecting said steam entry port with said steam bypass entry port, and a second purge chamber disposed externally of said valve body, longitudinally therein, and oppositely disposed from said first purge chamber communicating said bypass entry port with said oil and steam purge outlet means.
Claim 21
Dependent Claim
25 words
The improved control and purge valve of claim 1 wherein said steam entry port and oil entry ports are disposed perpendicularly of said central bore.
Claim 22
Dependent Claim
26 words
The improved control and purge valve of claim 1 wherein said steam exit port and said oil exit port are disposed perpendicularly of said central bore.
Claim 23
Dependent Claim
41 words
The improved control and purge valve of claim 1 wherein said valve body includes external side walls and said steam inlet means and said oil inlet means are unitarily formed and secured to one said side wall of said valve body.
Claim 24
Dependent Claim
36 words
The improved control and purge valve of claim 22 wherein said steam outlet means and said oil and steam purge outlet means are unitarily formed and secured to another opposite side wall of said valve body.
References Cited (Backward Citations)
US1775856A
Cited
US2045823A
Cited
US2098119A
Cited
US2473687A
Cited
US2702007A
Cited
US2831464A
Cited
US2858851A
Cited
US3776276A
Cited
DE2425371A1
Cited
US3933165A
Cited
US3939871A
Cited
US4146056A
Cited
US4191214A
Cited
US4454892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |