CN1740600B

CN1740600B - Valve device

Info

Publication number: CN1740600B
Application number: CN 200510098044
Authority: CN
Inventors: A·赖策; D·克拉策尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2004-06-24
Filing date: 2005-06-24
Publication date: 2010-06-09
Anticipated expiration: 2025-06-24
Also published as: CN1740600A; FR2872248A1; DE102004030420A1; FR2872248B1

Abstract

The present invention relates to a valve device(1), which has a valve unit (5) longitudinally movable in a valve insert (2) and cooperating with a valve seat (4) formed in a valve body (3). An electromagnetic actuator stresses the unit (5) in closing direction of the seat(4). At least a part of the unit (5)is in a valve chamber (7) delimited by the insert (2) at the seat(4). According to the invention, the valve has a retention device (15) that cooperates with a valve unit (5) and holds the unit in a position equivalent to an open position of a valve seat (4) before control of the unit by an actuator. The actuator acts in closing direction of the seat and the operation of the retention device is neutralized after the control of the unit by the actuator.

Description

Control valve unit

Technical field

The present invention relates to a kind of control valve unit, this control valve unit has a setting with longitudinal movement in a clack box, and and the coefficient valve element of the valve seat of in valve body, constructing, this valve element can be operated on the closing direction at valve seat by an electromagnetic driver in the position of packing into, wherein, at least a portion of valve element is arranged in the valve chamber that is limited in the zone of valve seat by clack box, be provided with one with the coefficient retaining mechanism of valve element, make the valve element before the operation aspect the first time driver, remain on position corresponding to an open mode of valve seat by retaining mechanism.

Background technique

DE 100 36 576 A1 disclose a kind of control valve unit or more definite say a kind of can be by the valve of eletromagnetic-operating, it also can be used for the hydraulic braking system of automobile.This control valve unit realizes that with a clack box latter has a slotted hole.In addition, clack box is communicated with a valve vault, and an armature is set in it, and it can be in longitudinal movement.Armature is connected with a valve tappet or the effect of a valve element, and the latter can be in longitudinal movement ground guiding in clack box.Effect between valve element and the armature connects following realization, on the valve tappet that the section of closing of usefulness that makes armature be sent to clack box along moving of the closing direction of valve seat is implemented.

Valve tappet is directed with little radial clearance on the whole length in the vertical hole of clack box, and in the shell outside two passages that are separated from each other is set at least.But a valve cap or valve chamber that is limited by clack box that comprises valve seat of this control valve unit is connected with valve vault liquid conducting ground by described passage, makes the residual air that is positioned at the valve vault can discharge by passage.

This control valve unit is maintained at open mode by a spring mechanism or a Returnning spring under no stream mode, wherein the spring mechanism of realizing as pressure spring is enclosed in the valve chamber.The setting of pressure spring in valve chamber guarantees to install simply this control valve unit.

Yet spring mechanism is because its being provided with in valve chamber can suffer disadvantageous static state and dynamic influence, and it is caused by the working medium that flows by valve chamber, and makes the mode of action of control valve unit influenced.This influence is normally by being flowing in mobilization force and the deflecting force on the spring ring that occurs in the valve chamber and act on pressure spring, and this mobilization force and deflecting force change greatly in the whole working zone of control valve unit, and is difficult to describe or unpredictable.

If the spring force of spring mechanism corresponding to owing to the power that acts on the direction on the spring ring of opening that is flowing in valve seat in the valve chamber, the negative effect of the above-mentioned mode of action of spring mechanism then occurs substantially.At this, under the disadvantageous especially running state of control valve unit, for example can cause pressure spring to leave its bearing on valve body, make one act on the valve tappet and cause the undesirable influence of valve function at the force component that opening of valve seat acts on the direction.

Summary of the invention

The control valve unit that use realizes according to the present invention, can avoid because working medium flows through the negative influence that the mode of action of valve chamber and control valve unit causes, because do not use known by prior art according to control valve unit of the present invention, the spring equipment that is arranged in the valve chamber is constructed, but described control valve unit has a longitudinal movement ground setting in a clack box, and and the coefficient valve element of the valve seat of in valve body, constructing, this valve element can be in the closing direction operation of valve seat by an electromagnetic driver in the position of packing into, wherein, at least a portion of valve element is arranged in the valve chamber that is limited in the zone of valve seat by clack box.

In contrast, control valve unit according to the present invention has a retaining mechanism with the coefficient and like this enforcement of valve element, make the valve element for the first time remain on a position before the operation aspect the driver at it, and the mode of action of retaining mechanism is cancelled after the operation aspect the first time of the valve element driver corresponding to the open mode of valve seat by retaining mechanism.

This means, the valve element before the operation aspect the first time driver, preferably be integrated with this control valve unit hydraulic system vacuum and be full of process during remain on the position that valve seat is opened in all positions at control valve unit, and the mode of action of retaining mechanism was cancelled by it behind the eletromagnetic-operating in the first time of valve element, and wherein the movement of valve element is no longer influenced or influenced very little subsequently by retaining mechanism control valve unit in service.

Other advantage and favourable improvement project according to theme of the present invention results from specification, accompanying drawing and claim.

Description of drawings

Three embodiments illustrating according to theme of the present invention are simplified in signal in the accompanying drawings, and it is introduced in the following description in detail, wherein in different embodiments' explanation for clarity, the member identical for 26S Proteasome Structure and Function uses same reference character.

Fig. 1 is according to the signal longitudinal section of control valve unit of the invention process,

Fig. 2 illustrates the area I I that describes feature among Fig. 1 in detail with the view that amplifies,

Fig. 3 illustrates retaining mechanism shown in figure 2 separately with a view direction Z who represents in detail in Fig. 2,

The area I I of Fig. 4 to represent in detail in the zoomed-in view presentation graphs 1 of another mode of execution,

Fig. 5 is illustrated in the mode of execution of the retaining mechanism among Fig. 4 separately with a view direction Y who represents in Fig. 4,

The signal longitudinal section of Fig. 6 control valve unit that another mode of execution is realized according to the present invention,

Fig. 7 represents a retaining mechanism shown in Figure 6 separately with plan view,

Embodiment

A part of representing an Electromagnetically activated control valve unit among Fig. 1 with the signal longitudinal section.But control valve unit 1 be arranged on with having a longitudinal movement in the clack box 2, and and valve seat 4 coefficient valve elements 5 that are formed in the valve body 3.

Valve element 5 is arranged in the valve chamber 7 that is limited in the zone of valve seat 4 by clack box 2 towards the zone of valve seat 4, its size represents in detail by the rectangle that dotted line among Fig. 1 draws, wherein valve element 5 attach troops to a unit have one first cylindrical region 5A in the zone of valve chamber 7, the then then then then ball collar shape zone 5E of three cylindrical shape zone 5D of the three cylindrical shape zone 5D of frustum conical area 5C and of frustum conical area 5C, of the second cylindrical region 5B of the less second cylindrical region 5B of cylindrical region 5A and its diameter.The ball collar shape zone 5E and conical valve seat 4 actings in conjunction of valve element 5 make to have a kind of seal action when valve element 5 rests on the valve seat 4, make when valve seat 4 is closed the outflow zone 9 of the inflow region 8 of valve chamber 7 and valve chamber 7 to be separated from each other.

Control valve unit 1 is not made of the hydraulic module 1A that represents in Fig. 1 and an electrical module that install on this hydraulic module 1A, that represent in detail substantially, the latter is made up of a coil, an electric winding and a yoke ring dish with known form and mode, so that the armature 10 of hydraulic module 1A is operated overcoming in inflow region 8 and valve chamber 7 main pressure on the closing direction of valve seat 4 as so-called electromagnetic driver.

But armature 10 one with valve vault 11 that clack box 2 is fixedlyed connected in the guiding of longitudinal movement, and defining a plurality of passage 12A with valve vault 11, the valve tappet 12B by valve element 5 is communicated with valve chamber 7 in valve dead zone 13 that valve vault 11 and armature 10 deviate to limit between the end of valve seat 4 one for they.

Do not have valve element 5 under the state of stream at control valve unit 1 and lift off a seat and 4 on the direction in valve dead zone 13, promote, make armature 10 move, in the zone in valve dead zone 13, press to valve vault 11 and position thereon away from clack box 2 by acting on hydraulic coupling on the valve element 5.At valve element 5 with also have in this position of armature 10, valve seat 4 discharge by the ball collar shape zone 5E of valve element 5 by valve element 5 or more definite theory and inflow region 8 with flow out regional 9 and communicate.

In addition, working medium can pass through control valve unit 1 under this state of control valve unit 1, that is from the inflow region 8s of valve chamber 7 through valve seat 4 import the outflow zone 9 of control valve units and ABS system (anti-lock braking system), TCS system (pull-in control system) or ESP system (electronic stability program) one with flow out regional 9 zones that communicate.

For closing valve seat 4, with known form and mode the electrical module that is installed on the valve vault 11 of control valve unit 1 is switched on, make this electrical module produce an electromagnetic force, this electromagnetic force moves the direction of armature from its position of representing along valve seat 4 among Fig. 1, and the ball collar shape zone 5E that makes valve element 5 presses to the valve seat 4 of valve body 3 hermetically, thus shut-off valve assembly 1.Under this state of control valve unit 1, inflow region 8 is by from flowing out zone 9 separately and do not have working medium to flow through control valve unit 1, and this moment is at inflow region 8 and flow out and exist a positive pressure to fall between the zone 9.When the pressure in inflow region 8 exists a positive pressure to fall in the inside of control valve unit during greater than the pressure in the outflow zone 9 of control valve unit 1.

This results from the following fact, it separated by safety check 14 and outflow zone 9 when zone 9 existed a positive pressure to fall with respect to flowing out at inflow region 8, wherein, safety check 14 is fallen at negative pressure and is opened, and so-called negative pressure falls the pressure that means in flowing out zone 9 greater than the pressure in the inflow region 8.

Deviate from the side of valve chamber 7 in the inside of valve body 3 retaining mechanism 15 being set at valve seat 4, it comprises a bar 16 and fixes the holding member 17 of this bar 16.

The bar 16 of retaining mechanism 15 deviates from an end of holding member 17 by it and the ball collar shape zone 5E one of valve element 5 works, and realize like this, be valve element 5 before the operation aspect the first time driver by holding member 15 remain on a state of opening with valve seat 4 corresponding, and in the position shown in the figure 1, and the mode of action of retaining mechanism is cancelled after the operation aspect the first time of valve element 5 driver.

In the position of retaining mechanism 15 corresponding to the open mode of valve seat, bar 16 deviates from an end of holding member 17 to be given prominence on the direction of valve seat 4 in the inflow region 8 of valve chamber 7, make valve element 5 lean against on the bar 16, and valve element 54 certain distances of lifting off a seat are arranged on the inside of control valve unit 1 with its ball collar shape zone 5E.

Retaining mechanism 15 by holding member 17 in axially support on plastic insertion piece 18, and radially in valve body 3 inner guidance field 19 guiding by three expressions in detail in Fig. 2 and Fig. 3, wherein in Fig. 2, express and in Fig. 1, describe the area I I of feature in detail and in Fig. 3, express holding member 17 is described feature in detail in Fig. 2 view direction Z independently with zoomed-in view.

Between three guidance fields 19 of holding member 17, be provided with three spaces 20 once more, so that can guide on the direction of valve chamber 7 working medium that the flows retaining mechanism of flowing through as far as possible unobstructedly by inflow region 8.

Holding member 17 is formed by the first base area 17A and the basic leading pipe 17B structure for tubular or hollow cylinder with guidance field 19 and space 20.A center hole king-rod 16 at leading pipe 17B is provided with longitudinal movement with the zone that it deviates from valve element 5, wherein realize in bar 16 and being connected like this of leading pipe 17B, make bar 16 with respect to leading pipe 17B just deposit a qualification, act on the bar 16 and just can move during from the pressure of valve element.

At this, the clamping force that will overcome between the leading pipe 17B of bar 16 and holding member 17 is so high, the operation that makes valve element 5 need not the driver aspect of valve element 5 or armature 10 rests on position represented in Fig. 1, and valve seat 4 is maintained at open mode by retaining mechanism 15.

If electromagnetic driver energising, masterpiece in the closing direction effect is used on armature 10 and the valve element 5, then bar 16 is moved to the position of representing in Fig. 2 in the inside of leading pipe 17B by the holding member 17 of valve element 5 with respect to axial restraint, and valve seat 4 rests on the valve body 3 by valve element 5 and closes.

This means that the bar 16 that the operation by valve element 5 driver aspects causes is adjusted the path restriction with respect to the maximum that moves through valve element 5 of holding member 17, and the maximum of valve element 5 is adjusted the path and limited by valve seat 4.Because aforementioned clamped power also bar 16 with respect to the connected region that is present in after the moving of holding member 17 between bar 16 and leading pipe 17B in, so bar 16 rests on the position of representing at the whole life period of control valve unit 1 in Fig. 2, make that the mode of action of retaining mechanism 15 is cancelled after the operation aspect the first time of valve element 5 driver, and the influence of 15 pairs of valve elements of retaining mechanism is very little, even does not have fully.

Fig. 4 is with the area I I that optionally describes feature in addition according to embodiments of the invention in Fig. 1 in detail in the zoomed-in view presentation graphs 1 to Fig. 3, and retaining mechanism 15 or bar 16 and holding member 17 integral types are implemented in this embodiment.

At this, in Fig. 4 represented retaining mechanism 15 substantially based on in the same mode of action of Fig. 1 represented retaining mechanism 15 in Fig. 3, because leaning against on the ball collar shape zone 5E of valve element 5 with its bar 16 behind the inside that is installed in valve body 3 and before the operation aspect the first time of valve element 5 driver, make valve element 5 be maintained at position represented among Fig. 1 and valve seat 4 is opened according to the retaining mechanism 15 of Fig. 4.

Remarkable difference between retaining mechanism of representing among Fig. 4 and the retaining mechanism of representing in Fig. 1 is, retaining mechanism 15 according to Fig. 4 has two stable deformation position in the zone of holding member 17, and constitute one with bar 16, by described holding member retaining mechanism 15 in axially support on plastic insertion piece 18, in radial support on valve body 3.In Fig. 4, express first deformation position of holding member 17 at this, have a curved profile directed on the direction of valve element 5, make the bar 16 of valve element 5 press off from valve seat 4 at this position holding member 17.

During operation aspect valve element 5 being carried out driver, one acts on the holding member 17 by bar 16 at the pressure that acts on the direction of plastic insertion piece 18, makes the holding member 17 of elastic construction move to its stable the second end position that dots from the stable first end position of representing among Fig. 4.Have one at this stable the second end position holding member 17 and leave that valve element 5 outwards points to and correspond essentially to curved profile at the curved profile shown in Fig. 4, make bar 16 towards the end of valve element 5 from valve seat 4 outside the adjustment path X shown in Fig. 4, to move.

This means, holding member 17 is flexibly constructed, switch from stable first end position to its stable the second end position when making operation aspect the first time of valve element 5 driver, move away from valve element 5 at this bar 16, and bar 16 is maintained on the corresponding position, the second end position with holding member 17 at the whole life period of control valve unit 1, influence at 15 pairs of valve elements 5 of this position holding mechanism is very little, even does not have fully.

Be in Fig. 1 or the control valve unit of in Fig. 4, representing 1 all have such advantage according to the embodiment of the present invention, the mode of action that is control valve unit at first need not plastic insertion piece 18, and retaining mechanism 15 can be tested and install with simple form and mode after test.

Fig. 5 is illustrated in the retaining mechanism of representing among Fig. 4 15 with a view direction Y who represents in detail in Fig. 4, it has three guidance fields 19 and three spaces 20.Can infer this self-evident professional workforce, be according to the holding member 17 of Fig. 3 or according to the holding member 17 of Fig. 4 all with figure in represented organization plan differently realize, and retaining mechanism 15 no matter axially still radially in the positioned internal of control valve unit, make in the zone of retaining mechanism 15 working medium mobile in the inflow region of valve chamber 7 volume flow with hope as far as possible unobstructedly and on the direction of valve chamber 7 bootable.

The another kind of expressing retaining mechanism 15 in Fig. 6 and Fig. 7 according to the embodiment of the present invention, wherein Fig. 6 represents a longitudinal cross-section with the control valve unit 1 of retaining mechanism 15 structures, and Fig. 7 represents separately from describe the retaining mechanism of selecting among the view direction W of feature of representing 15 in detail in Fig. 6 among Fig. 6.

Retaining mechanism 15 is constructed substantially into round member, and its inside at clack box 2 is installed on the height of the second cylindrical region 5B of valve element 5.Have a plurality of longitudinal ribs 21 at its retaining mechanism 15 on the outside of clack box 2, retaining mechanism 15 is clamped and installed on the clack box 2 by these longitudinal ribs.

Before the operation aspect the first time of valve element 5 driver, in the clack box 2 of packing into as the retaining mechanism 15 of clamping element effect, make valve element 5 lean against on the holding member 17 with front towards retaining mechanism 15, and valve element 5 is remained on the position of representing as Fig. 6 by retaining mechanism 15, should put valve seat 4 at this and open.

During operation aspect valve element 5 carries out driver, this moment, valve seat 4 was closed on the direction of valve seat 4 by the axial adjustment of valve element 5, and retaining mechanism 15 moves on the direction of valve seat 4 with valve element 5.

This means, electromagnetic driver overcomes because the longitudinal rib 21 of retaining mechanism 15 acts on the clamping force between clack box 2 and the retaining mechanism 15, so second settling position that retaining mechanism 15 is closed to valve seat 4 from its first settling position of representing among Fig. 6 is adjusted in control valve unit 1 axially extended direction.This means, be limited to the clamping force between retaining mechanism 15 and the clack box 2 like this, it can be overcome with retaining mechanism 15 by electromagnetic driver rest on its second settling position after the operation aspect the first time of valve element 5 driver.This comes from the following fact, is no longer acting on any power that surpasses the clamping force between retaining mechanism 15 and clack box 2 in the inside of control valve unit 1 on the retaining mechanism 15 during the residual life of control valve unit 1, and retaining mechanism 15 moves relative to clack box.

Simultaneously, realize as the internal diameter that retaining mechanism 15 usefulness of ring-type element structure are such, make valve element 5 cooperate (durchgreifen) retaining mechanism 15 with such radial clearance, the working method that makes retaining mechanism 15 not influence the axial motion of valve element 5 and control valve unit 1 is not held mechanism 15 and changes when normal operation.

The retaining mechanism of representing in Fig. 6 and Fig. 7 15 relatively has such advantage with two kinds of mode of executions of the retaining mechanism of representing in Fig. 1 and Fig. 3, promptly the retaining mechanism according to Fig. 6 is not arranged in the zone of valve seat 4, does not therefore influence working medium flowing in the inflow region 8 of valve chamber 7.

All mode of executions of representing in the accompanying drawing all have following advantage, promptly the valve element on all positions of control valve unit before the operation aspect the first time of the valve element driver at first in the vacuumizing phase of the system of control valve unit and integrated this control valve unit be full of the effect that the stage is maintained at open mode and in operation after a while valve performance is not had a negative impact.

This means, in the control valve unit of realizing according to the present invention, can not make by commonly known in the art, in valve chamber, be provided with and at the Returnning spring that acts on the valve element on the direction of opening of valve seat, the shortcoming of described Returnning spring be have bigger sum of errors control valve unit in service be subjected to strong, often by undesirable influence of flowing and causing.

Self-evident in addition, retaining mechanism also can be constructed by the combination of the different characteristic of the different mode of executions of expression in the accompanying drawings.So directly there is this scheme, be retaining mechanism in the zone of its base area so that Fig. 3 form illustrated and mode are flexibly constructed, and bar with respect to base area with to Fig. 1 form illustrated and mode at the structure movably additionally of the operation period aspect the first time of valve element 5 driver.Can stipulate in addition, the operation period of the retaining mechanism that is provided with in the inside of valve body 3 aspect the first time of valve element 5 driver is to move with respect to valve body 3 form illustrated in fig. 6 and mode, in the zone of base components, flexibly construct, and but bar is with respect to base components or leading pipe relative movement ground structure, so that make valve element 5 remain on corresponding to the position of the open mode of valve seat 4 momently and also do not apply remarkable influence when operating afterwards.

Claims

1. control valve unit (1), it has a setting with longitudinal movement in a clack box (2), and and the coefficient valve element of valve seat (4) (5) of in valve body (3), constructing, this valve element (5) can be operated on the closing direction of valve seat (4) by an electromagnetic driver in the position of packing into, wherein, at least a portion of valve element (5) is arranged in the valve chamber (7) that is limited in the zone of valve seat (4) by clack box (2), be provided with one and the coefficient retaining mechanism of valve element (5) (15), make valve element (5) before the operation aspect the first time driver, remain on position corresponding to an open mode of valve seat (4) by retaining mechanism (15), it is characterized in that, the mode of action of retaining mechanism (15) is cancelled after the operation aspect the first time of valve element (5) driver, thereby the movement of valve element is no longer influenced by retaining mechanism the in service of control valve unit subsequently.

2. control valve unit according to claim 1, it is characterized in that, retaining mechanism (15) has a bar (16), (8)s are outstanding in the direction of valve chamber (7) from an inflow region of valve chamber (7) for it, and act on the end of valve element (5) towards valve seat (4) with its end towards valve chamber (7), make valve element (5) and the liftoff setting of valve seat (4) spacer.

3. control valve unit according to claim 2, it is characterized in that, retaining mechanism (15) has a holding member (17) that is connected with bar (16) effect, make retaining mechanism (15) when the first time by valve element (5), valve seat (4) was closed in the operation aspect the driver, by for the axial stroke of closing the needed valve element of valve seat (4) (5) by from shifting to a steady state corresponding to the closed condition of valve seat (4) corresponding to a steady state of the open mode of valve seat (4), described axial stroke is sent on the holding member (17) by bar (16).

4. according to claim 2 or 3 described control valve units, it is characterized in that, bar (16) is connected with holding member (17), can move to its second place from its primary importance with respect to holding member (17) at least in part when making the operation of bar (16) aspect the first time of valve element (5) driver corresponding to the closed condition of valve seat (4) corresponding to the open mode of valve seat (4), and fixing by holding member (17) there.

5. according to claim 2 or 3 described control valve units, it is characterized in that, bar (16) is connected with holding member (17), make bar (16) can move to its second place from its primary importance with respect to valve seat (4) with holding member (17) at least in part corresponding to the open mode of valve seat (4) corresponding to the closed condition of valve seat (4), and fixing by holding member (17) there.

6. control valve unit according to claim 5, it is characterized in that, holding member (17) is partially flexible ground structure at least, and the distortion that at least a portion that bar (16) causes corresponding to the stroke by valve element (5) moves through the flexible region of holding member (17) realizes.

7. control valve unit according to claim 1 is characterized in that, retaining mechanism (15) is a clamping element that is provided with between valve element (5) and clack box (2).

8. control valve unit according to claim 7, it is characterized in that, retaining mechanism (15) is a ring-type element that go up to be provided with at valve element (5), and being produced as a valve element (5) by it between clack box (2) and retaining mechanism (15), to remain on its needed form in position corresponding to the open mode of valve seat (4) be the confining force of clamping force.