WO2005093302A1 - Druckbegrenzungsventil - Google Patents
Druckbegrenzungsventil Download PDFInfo
- Publication number
- WO2005093302A1 WO2005093302A1 PCT/EP2005/003125 EP2005003125W WO2005093302A1 WO 2005093302 A1 WO2005093302 A1 WO 2005093302A1 EP 2005003125 W EP2005003125 W EP 2005003125W WO 2005093302 A1 WO2005093302 A1 WO 2005093302A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure relief
- valve seat
- relief valve
- pressure
- valve
- Prior art date
Links
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Definitions
- the invention relates to a pressure relief valve with a housing in which a valve seat is formed, a valve body which is movable in the housing between a position in contact with the valve seat, which corresponds to a closed state of the pressure relief valve, and a position which is lifted off the valve seat and which corresponds to the open state of the pressure relief valve.
- Pressure relief valves are used in many applications. One of these applications is use in a power steering system in which the pressure relief valve limits the maximum pressure of a hydraulic fluid provided by a servo pump.
- the object of the invention is to provide a pressure relief valve which reduces the energy requirement of the servo pump when the pressure of the hydraulic fluid provided is limited, that is to say when the pressure relief valve is in its open state.
- the object of the invention is further to reduce the load on the components of the power steering which are exposed to the hydraulic pressure.
- the pressure required to hold the valve body in the position lifted from the valve seat is lower than the pressure required to lift the valve body from the valve seat.
- the invention is based on the basic idea of dividing the opening process of the pressure relief valve into two phases. In a first phase of opening, in which the valve body is being lifted off the valve seat, the opening pressure is determined by the cross section of the valve seat and the force with which the valve body is pressed against the valve seat. The pressure at which the valve body is lifted off the valve seat can thus be determined very precisely. This first phase is followed by a second phase in which the valve body is lifted further from the valve seat, whereby at the same time, a larger cross section of the valve body is acted upon by the pressure present at the valve seat.
- FIG. 1 shows a cross section through an inventive pressure relief valve in the closed state
- FIG. 2 shows a cross section through the pressure relief valve according to the invention in the open state.
- a pressure relief valve 10 is shown, which can be used in particular for pressure limitation in the hydraulic system of a vehicle power steering.
- the pressure relief valve 10 has a housing 12 which has a pressure connection 14 and a return connection 16.
- the housing 12 has on the side of the pressure connection 14 an annular valve seat 18 which is formed by a peripheral edge at the transition from the pressure connection 14 to a guide section 20, the diameter of which is larger than the diameter of the pressure connection 14 on the side facing away from the valve seat 18, the actual inner surface 22 of the Housing 12 on. Since the diameter of the inner surface 22 of the housing is than the diameter of the guide section 20, an edge is formed at the transition which forms an annular throttle edge 24.
- valve body 26 In the interior of the housing 12 there is a valve body 26, a frustum-shaped end face 28, followed by a cylindrical surface 30 and then a centering shoulder 32
- T ⁇ iirrVimpQQpr Hpinpr is as Af * r T_ ⁇ rrhmp ⁇ ⁇ pr HP ⁇ ⁇ iiRpnflärVip ⁇
- Throttle point which is comparable to a second valve seat due to its very narrow cross-section.
- the result of this is that the entire cross-sectional area Q2 (see FIG. 2) of the valve body 26 is acted upon by the pressure of the hydraulic fluid at the pressure connection 14.
- the force exerted on the valve body 26 increases and it is lifted further from the valve seat 18 until it reaches the position shown in FIG. 2, which corresponds to the open position of the pressure relief valve.
- the hydraulic fluid can escape through the pressure relief valve through the gap between the throttle edge 24 and the valve body 26. A pressure is maintained that is lower than the response pressure of the pressure relief valve 10.
- valve body As a cone or ball.
- a graduated cylinder is also possible.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004004609.1 | 2004-03-24 | ||
DE200420004609 DE202004004609U1 (de) | 2004-03-24 | 2004-03-24 | Druckbegrenzungsventil |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005093302A1 true WO2005093302A1 (de) | 2005-10-06 |
WO2005093302A9 WO2005093302A9 (de) | 2005-11-24 |
Family
ID=32798356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/003125 WO2005093302A1 (de) | 2004-03-24 | 2005-03-23 | Druckbegrenzungsventil |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE202004004609U1 (de) |
WO (1) | WO2005093302A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9657847B2 (en) | 2012-07-18 | 2017-05-23 | Pres-Vac Engineering Aps | Pressure relief valve |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006060788B4 (de) | 2006-12-21 | 2019-01-31 | Jost-Werke Gmbh | Spielfrei-Vorrichtung für eine Anhängerkupplung |
DE102010022224A1 (de) * | 2010-05-20 | 2011-11-24 | Mahle International Gmbh | Ventileinrichtung |
FI123334B (en) * | 2011-12-22 | 2013-02-28 | Waertsilae Finland Oy | Safety valve arrangement for a common rail fuel injection system and common rail fuel injection system |
US10302223B2 (en) | 2015-12-21 | 2019-05-28 | Baker Hughes, A Ge Company, Llc | Anti-chattering valve cone and methods for using same |
DE102018131093A1 (de) | 2018-12-06 | 2020-06-10 | Schaeffler Technologies AG & Co. KG | Ventil und Verfahren zur Herstellung eines Ventils sowie Vorrichtung zur Regelung von Drücken eines Strömungsmittels in einem Fahrzeuggetriebe mit einem als Druckausgleichsventil ausgebildeten Ventil |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57154565A (en) * | 1981-03-17 | 1982-09-24 | Yutaka Yamada | Lift type check valve |
DE4303204A1 (en) * | 1992-02-29 | 1993-09-09 | Teves Gmbh Alfred | Hydraulically working servo linkage with pressure limiting valve - limits pump pressure and power when servo motor blockaded until pressure medium feed to damaged work chamber is interrupted |
US5251664A (en) * | 1990-02-19 | 1993-10-12 | Saab Automobile Aktiebolag | Quiet check valve for pulsating flow |
US5560343A (en) * | 1993-10-22 | 1996-10-01 | Vdo Adolf Schindling Ag | Pressure-limiting valve |
US6125822A (en) * | 2000-02-04 | 2000-10-03 | Stanadyne Automotive Corp. | Two stage pressure relief valve |
-
2004
- 2004-03-24 DE DE200420004609 patent/DE202004004609U1/de not_active Expired - Lifetime
-
2005
- 2005-03-23 WO PCT/EP2005/003125 patent/WO2005093302A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57154565A (en) * | 1981-03-17 | 1982-09-24 | Yutaka Yamada | Lift type check valve |
US5251664A (en) * | 1990-02-19 | 1993-10-12 | Saab Automobile Aktiebolag | Quiet check valve for pulsating flow |
DE4303204A1 (en) * | 1992-02-29 | 1993-09-09 | Teves Gmbh Alfred | Hydraulically working servo linkage with pressure limiting valve - limits pump pressure and power when servo motor blockaded until pressure medium feed to damaged work chamber is interrupted |
US5560343A (en) * | 1993-10-22 | 1996-10-01 | Vdo Adolf Schindling Ag | Pressure-limiting valve |
US6125822A (en) * | 2000-02-04 | 2000-10-03 | Stanadyne Automotive Corp. | Two stage pressure relief valve |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 260 (M - 180) 18 December 1982 (1982-12-18) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9657847B2 (en) | 2012-07-18 | 2017-05-23 | Pres-Vac Engineering Aps | Pressure relief valve |
Also Published As
Publication number | Publication date |
---|---|
WO2005093302A9 (de) | 2005-11-24 |
DE202004004609U1 (de) | 2004-07-29 |
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