WO2000026567A1 - Vent valve - Google Patents
Vent valve Download PDFInfo
- Publication number
- WO2000026567A1 WO2000026567A1 PCT/GB1999/003351 GB9903351W WO0026567A1 WO 2000026567 A1 WO2000026567 A1 WO 2000026567A1 GB 9903351 W GB9903351 W GB 9903351W WO 0026567 A1 WO0026567 A1 WO 0026567A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vent
- valve
- seat
- valve member
- chamber
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/1402—Check valves with flexible valve members having an integral flexible member cooperating with a plurality of seating surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7838—Plural
- Y10T137/7839—Dividing and recombining in a single flow path
- Y10T137/784—Integral resilient member forms plural valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7869—Biased open
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/7888—With valve member flexing about securement
- Y10T137/789—Central mount
Definitions
- This invention relates to a vent valve for an air braking system of a vehicle.
- Vent valves are required in an air braking system in order to drain moisture which may accumulate in the signal or supply lines.
- Manually operable valves are somewhat difficult to design, and are generally undesirable because they tend to be opened at rather infrequent intervals.
- Automatic vent valves are therefore preferred, hitherto such automatic valves have included precision engineered components such as pistons, springs and valve seating devices, and are therefore somewhat expensive.
- An air braking system of a vehicle also includes a compressor which is brought on-load by a demand signal.
- lubrication oil may accumulate on the head of the piston. This oil will enter the air braking system when the compressor is brought on-load, and it has been proposed to vent such oil laden air to exhaust.
- the vent valve proposed for this purpose is a precision engineered component which is rather expensive.
- a vent valve for a fluid pressure circuit, the valve comprising a closed chamber having an inlet port and a vent, the vent defining a valve seat about the inner side thereof and having a resilient valve member engageable with said seat, the valve member comprising a head, a continuous rib depending from said head and adapted for sealing engagement with said seat, and means to hold said valve member adjacent said vent; the rim of said head engaging said chamber about said seat to resiliently support said rib away from said seat, and defining openings whereby said chamber can communicate with said vent; the vent valve thereby defining a fluid passage from said chamber via said openings, seat and vent, and said fluid passage having a restricted flow area such that increasing pressure in said chamber deforms said head towards said vent, thereby sealingly engaging said rib and seat.
- Such a valve can be very simply constructed using a unitary moulding of e.g. synthetic rubber.
- the valve preferably incorporates retaining means to secure the valve member in relation to the vent, these retaining means preferably being provided on the valve member itself.
- the retaining means may for example be a snap fit projection of the valve member, and in the preferred embodiment comprise a limb removably engageable in the vent itself.
- the valve seat and depending rib are preferably circular, the seat being planar and immediately adjacent the vent .
- the vent may include a passage having inwardly directed arms defining vent passageways therebetween.
- the vent may be defined by an annular insert, and such an arrangement permits variation of the area of said vent passageways.
- the depending rib defines with the valve seat a travel stop for the valve member, thereby restricting the stroke of the valve from the rest condition.
- the valve is particularly useful in an air braking system of a vehicle, and may be used to vent part of the system automatically.
- the valve is positioned in the signal line from the governor valve to the compressor, and purges accumulated moisture from this line.
- Fig. 1 is an axial section through a valve member according to the invention
- Fig. 2 is a transverse section on line 2-2 of Fig. 1, and
- Fig. 3 is an isometric view of the valve member of Fig. 1 from above and to one side.
- a vent valve 10 comprising an elastomeric valve member 11 situated in a schematic housing 12 having a chamber 13 with an inlet 14 from a source S and an outlet 15 to a consumer C.
- the chamber also has a plurality of vent passages 17 communicating to the exterior of the housing and defined by a plurality of equispaced inwardly directed arms 18.
- the elastomeric valve member 11 is of resilient material having a stiffness appropriate for the purpose, as will be further explained below. It comprises a circular dome-like head 21 having a plurality of equispaced peripheral passages 22 in order to permit communication from the exterior of the dome to the interior, and vice versa.
- a continuous coaxial depending rib 23 is provided on the underside of the dome.
- the regions between each passage 22 constitute supporting legs 24, and the whole, as shown in Fig. 3, has the appearance of the Millennium Dome. In the rest position, the legs 24 depend to a greater extent than the rib 23.
- the valve member 11 has a depending coaxial limb 25 within the rib 23 which projects beyond the legs 24.
- the terminal end of the limb 25 has a radially outwardly extending shoulder 26 which in use engages the underside of the arms 18, as illustrated, so as to retain the valve member 11 in the housing 12.
- the terminal end of the limb 25 has an internal blind recess 27 in the centre to permit flexibility of the shoulder 26, for installation purposes.
- the axial length of the arms 18 is determined such that the valve member is installed under slight tension with the shoulder 26 and legs 24 firmly engaged with the housing 12.
- the rib 23 is spaced above the housing 12, as shown, so as to define a fluid passageway from the chamber 13 to the exterior of the valve housing 12 via the passages 22,17.
- the housing 12 would be manufactured in such a way that the valve member can be pressed past the arms 18 from above.
- vent valve Operation of the vent valve is as follows. As noted above the chamber 13 is vented to the exterior when the valve member 11 is in the rest condition.
- the closing and opening pressures of the valve 10 are dependent on a number of factors, including the stiffness of the valve material, the size of the vent passages 22,17, and the rate of pressure increase in the chamber 13. The skilled man will make adjustments in order to obtain a valve which will meet the desired performance criteria.
- the depending rib 23 has the particular advantage of limiting the stroke of the head 21, in addition to providing a sealing surface.
- the rib 23 may also define the minimum flow area through the valve, if desired.
- the vent valve described herein will close a short time after a compressor, as source S, has been brought offload by a rise in pressure in a signal line from the usual governor valve. If placed low down in a signal line, the chamber 13 will act as a sump for moisture, and the valve member 11 will permit such moisture to be dynamically blown to the exterior as the valve moves from the open to the closed condition. Likewise, oil laden air or moisture from an idling compressor can be vented by a similar valve as the compressor is brought on-load, thus preventing such air reaching the consumer, and in particular a desiccant filled air dryer of a braking system.
- valve 10 has been described with an inlet port 14 and an outlet port 15. However the valve will work equally well if an inlet port only is provided, connection from the source to the consumer being established outside the chamber
- the valve member 11 may be retained in any convenient manner, and incorporated in any fluid device having a vent opening.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/830,481 US6516829B1 (en) | 1998-10-29 | 1999-10-08 | Vent valve |
JP2000579917A JP2002529660A (en) | 1998-10-29 | 1999-10-08 | Vent valve |
EP99949195A EP1125075B1 (en) | 1998-10-29 | 1999-10-08 | Vent valve |
BR9914839A BR9914839A (en) | 1998-10-29 | 1999-10-08 | Ventilation valve |
DE1999607944 DE69907944T2 (en) | 1998-10-29 | 1999-10-08 | BLEED VALVE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9823614A GB9823614D0 (en) | 1998-10-29 | 1998-10-29 | Vent valve |
GB9823614.4 | 1998-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000026567A1 true WO2000026567A1 (en) | 2000-05-11 |
Family
ID=10841453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1999/003351 WO2000026567A1 (en) | 1998-10-29 | 1999-10-08 | Vent valve |
Country Status (7)
Country | Link |
---|---|
US (1) | US6516829B1 (en) |
EP (1) | EP1125075B1 (en) |
JP (1) | JP2002529660A (en) |
BR (1) | BR9914839A (en) |
DE (1) | DE69907944T2 (en) |
GB (1) | GB9823614D0 (en) |
WO (1) | WO2000026567A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002088580A1 (en) * | 2001-04-27 | 2002-11-07 | Pres-Block S.P.A. | Improved valve |
EP1447600A1 (en) * | 2001-11-22 | 2004-08-18 | Nok Corporation | Pressure release valve |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6739976B2 (en) | 2001-03-15 | 2004-05-25 | Visteon Global Technologies, Inc. | Plastic boot for sealing double-tube driveshaft |
US6802780B2 (en) | 2001-03-15 | 2004-10-12 | Visteon Global Technologies, Inc. | Seal for double-tube driveshaft |
US6722991B2 (en) * | 2001-03-15 | 2004-04-20 | Visteon Global Technologies, Inc. | Venting system and method for a driveshaft |
US6827105B1 (en) * | 2001-09-04 | 2004-12-07 | Keamark, Inc. | Valve |
US6699129B2 (en) * | 2002-06-10 | 2004-03-02 | Gkn Automotive, Inc. | Vent for a constant velocity joint |
US6682429B2 (en) | 2002-06-13 | 2004-01-27 | Visteon Global Technologies, Inc. | Shaft with a venting system |
GB2421977B (en) * | 2003-09-26 | 2007-07-18 | David Howard Ambrose | System for elleviating in-vault condensation in double-glazed windows |
US6988949B2 (en) * | 2003-11-07 | 2006-01-24 | Gkn Driveline North America, Inc. | Constant velocity joint vent valve |
DE20318669U1 (en) * | 2003-12-03 | 2005-04-07 | Hengst Gmbh & Co Kg | Check valve with condensate drain |
US7082967B2 (en) * | 2004-01-05 | 2006-08-01 | Engineered Products & Services, Inc. | Modular umbrella valve |
US7703702B2 (en) * | 2004-04-07 | 2010-04-27 | Illinois Tool Works Inc. | Pneumatically operated device having check valve vent and method for making same |
DE202006004828U1 (en) | 2006-03-27 | 2006-06-08 | Hidde, Axel R., Dr. Ing. | Simple bleed valve with membrane |
DE102006035027A1 (en) * | 2006-07-28 | 2008-01-31 | GM Global Technology Operations, Inc., Detroit | liquid container |
US20080185062A1 (en) * | 2007-02-05 | 2008-08-07 | Johannes Nijland Peter Lodewij | Fluid control valve |
US20080226480A1 (en) * | 2007-03-15 | 2008-09-18 | Ion Metrics, Inc. | Multi-Stage Trochoidal Vacuum Pump |
US7766262B2 (en) * | 2007-05-14 | 2010-08-03 | Gillespie Barton W | Irrigation systems including flush valves, and methods for flushing debris from irrigation systems |
CN102333657A (en) * | 2009-02-25 | 2012-01-25 | 惠普开发有限公司 | Check valve |
FR2953574B1 (en) * | 2009-12-04 | 2012-02-24 | Snecma | OBSTRUCTION CAP FOR EVOLVING SHAFT FOR TRANSMISSION OF A ROTATION SPEED |
US9347578B2 (en) * | 2012-11-08 | 2016-05-24 | Parker-Hannifin Corporation | Check valve assembly |
US9618131B2 (en) * | 2015-07-08 | 2017-04-11 | William Lee | One way valve |
US10146234B2 (en) * | 2015-09-02 | 2018-12-04 | Continental Automotive Systems, Inc. | Thermostatic valve having anti-siphon feature |
JP2017194085A (en) * | 2016-04-18 | 2017-10-26 | タイガースポリマー株式会社 | Drain valve |
FR3075873B1 (en) * | 2017-12-22 | 2021-09-17 | Renault Sas | CONDENSATE EVACUATION DEVICE IN A BOOSTER CIRCUIT OF A COMBUSTION ENGINE |
US11674610B2 (en) | 2019-06-17 | 2023-06-13 | Custom Fabricating & Supplies | Vent plug and method |
USD931721S1 (en) * | 2019-06-17 | 2021-09-28 | Custom Fabricating & Supplies | Vent plug |
US11440710B2 (en) * | 2020-06-30 | 2022-09-13 | Silgan Dispensing Systems Slatersville, Llc | Self-venting closure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2948296A (en) * | 1958-03-24 | 1960-08-09 | Powers Regulator Co | Variable constant flow device |
US4054152A (en) * | 1975-03-11 | 1977-10-18 | Nippondenso Co., Ltd. | Check valve |
GB2288452A (en) * | 1994-03-28 | 1995-10-18 | Knecht Filterwerke Gmbh | Ventilation valve |
US5507318A (en) * | 1994-10-04 | 1996-04-16 | Walbro Corporation | Umbrella check valves |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3297048A (en) * | 1963-10-10 | 1967-01-10 | Imhof Augustin | Safety valve |
US3454182A (en) * | 1965-09-30 | 1969-07-08 | Timken Roller Bearing Co | Vent grommets |
US3605132A (en) * | 1969-07-22 | 1971-09-20 | John F Lineback | Automatic plumbing vent valve |
ZA818662B (en) * | 1981-01-21 | 1982-11-24 | Automotive Prod Co Ltd | Improvements to reservoirs for liquid pressure control systems |
US4918768A (en) * | 1987-11-18 | 1990-04-24 | Jacuzzi Whirlpool Bath | Air valve for spas and baths |
US5419366A (en) * | 1992-07-28 | 1995-05-30 | Johnston; Ian F. | Valve |
-
1998
- 1998-10-29 GB GB9823614A patent/GB9823614D0/en not_active Ceased
-
1999
- 1999-10-08 EP EP99949195A patent/EP1125075B1/en not_active Expired - Lifetime
- 1999-10-08 BR BR9914839A patent/BR9914839A/en not_active Application Discontinuation
- 1999-10-08 US US09/830,481 patent/US6516829B1/en not_active Expired - Lifetime
- 1999-10-08 DE DE1999607944 patent/DE69907944T2/en not_active Expired - Lifetime
- 1999-10-08 WO PCT/GB1999/003351 patent/WO2000026567A1/en active IP Right Grant
- 1999-10-08 JP JP2000579917A patent/JP2002529660A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2948296A (en) * | 1958-03-24 | 1960-08-09 | Powers Regulator Co | Variable constant flow device |
US4054152A (en) * | 1975-03-11 | 1977-10-18 | Nippondenso Co., Ltd. | Check valve |
GB2288452A (en) * | 1994-03-28 | 1995-10-18 | Knecht Filterwerke Gmbh | Ventilation valve |
US5507318A (en) * | 1994-10-04 | 1996-04-16 | Walbro Corporation | Umbrella check valves |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002088580A1 (en) * | 2001-04-27 | 2002-11-07 | Pres-Block S.P.A. | Improved valve |
US6889707B2 (en) | 2001-04-27 | 2005-05-10 | Pres-Block, S.P.A. | Pressure actuated shut-off valve with membrane |
EP1447600A1 (en) * | 2001-11-22 | 2004-08-18 | Nok Corporation | Pressure release valve |
EP1447600A4 (en) * | 2001-11-22 | 2007-12-26 | Nok Corp | Pressure release valve |
Also Published As
Publication number | Publication date |
---|---|
JP2002529660A (en) | 2002-09-10 |
US6516829B1 (en) | 2003-02-11 |
EP1125075A1 (en) | 2001-08-22 |
BR9914839A (en) | 2001-07-10 |
EP1125075B1 (en) | 2003-05-14 |
DE69907944D1 (en) | 2003-06-18 |
DE69907944T2 (en) | 2004-03-11 |
GB9823614D0 (en) | 1998-12-23 |
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