WO2009141191A1 - Solenoid valve - Google Patents
Solenoid valve Download PDFInfo
- Publication number
- WO2009141191A1 WO2009141191A1 PCT/EP2009/053681 EP2009053681W WO2009141191A1 WO 2009141191 A1 WO2009141191 A1 WO 2009141191A1 EP 2009053681 W EP2009053681 W EP 2009053681W WO 2009141191 A1 WO2009141191 A1 WO 2009141191A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- closing element
- main
- sleeve
- armature
- Prior art date
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Classifications
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/50—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5018—Pressure reapplication using restrictions
- B60T8/5025—Pressure reapplication using restrictions in hydraulic brake systems
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
Definitions
- the invention relates to a solenoid valve according to the preamble of independent claim 1.
- HSV high pressure switching valve
- a suction path for a pump must be opened so that it can provide the required pressure for the control instead of the driver.
- driver request braking
- ESP control ESP control to stabilize the vehicle.
- this path must be able to be opened against the pressure (high pressure) introduced by the driver.
- a two-stage solenoid valve high-pressure switching valve
- the sealing seats per application pressure-less, large sealing seat
- driver's request high pressure, small sealing seat and with decreasing high pressure again large sealing seat
- the armature can be opened via the solenoid.
- FIG. the known solenoid valve, which is designed as a two-stage normally closed switching valve, a valve cartridge 1.
- the valve cartridge 1 comprises a pole core 2, a connected to the pole core 2 valve insert 4, one nen within the valve core 4 axially movably guided 3 anchor, which with a Main closing element 7 is coupled, and connected to the valve core 4 valve sleeve 17.
- valve body 8 Within the valve sleeve 17, an annular valve body 8 is received separately.
- the valve body 8 forms with the main closing element 7 and its main valve seat 9 between at least a first flow opening 12 and a second flow opening 13 arranged main valve, being opened by the axial movement of the armature 3 and the main closing element 7 of the main valve seat 9 against the force of a return spring 5 and is closed by the force of the return spring 5, wherein an air gap 6 between the armature 3 and the pole core 2 defines a maximum possible total stroke h G of the armature 3.
- the valve insert 4 and the valve sleeve 17 are each designed as a sleeve and connected to each other.
- a sub-valve formed by a side closing member 11 connected to the armature 3 and a sub-valve seat 10 disposed in the main closing member 7 has a small sealing diameter and flow, so that an opening of the Secondary valve is made possible against a high pressure, resulting in a partially active or preloaded pressure build-up.
- the main valve with the main valve seat 9, which has a large seat cross-section, and the main closing element 7 allows a large, unthrottled as possible flow, resulting in a fully active or self-priming pressure build-up.
- a magnetic assembly not shown, generates magnetic force by energizing a coil winding, which moves the longitudinally movable armature 3 against the force of a return spring 5 against the pole core 2 with the secondary closing element 11, whereby the secondary valve seat 10 by the Vorgenhub h v , which part of the Ge - felhubs h G is open.
- a compression spring 14 supports the main closing element 7 in the direction of armature 3 or secondary closing element 11 supported by fluid flow forces, whereby the main valve seat 9 is opened abruptly the secondary valve seat 10 is closed again.
- the known solenoid valve has an additional component for the sealing area of the large sealing seat 9, namely the valve body 8, which is closed by a sealing bush made of steel, which was referred to above as the main closing element 7. Obviously the invention
- the solenoid valve according to the invention with the features of the independent patent claim 1 has the advantage that a removal of the valve body is possible, resulting in a cost reduction, in addition, the risk of bypass leakage is eliminated. Furthermore, the new solenoid valve construction without the valve body is characterized by a greater simplicity and in particular by a reduction in the size of the solenoid valve.
- valve sleeve made of steel, whereby a fluid-tight pressing into a pump housing and a fluid-tight connection with a valve core are possible.
- this makes it possible in a simple manner to produce a valve seat surface of the valve sleeve by embossing the steel sleeve.
- the embossed valve seat allows a wear-reduced operation of the main valve seat, even at high switching cycle numbers.
- the main closing element made of plastic.
- the sealing seat or the valve seat surface can be replaced by a stamping in the valve sleeve.
- a plastic sealing bush as the main closing element can be achieved by the elasticity of the plastic a better sealing effect with the embossed valve seat surface as in comparable steel sealing bushings. So it is possible to accept even a slightly lower quality of the sealing seat or the valve seat surface.
- Figure 1 shows a schematic sectional view of a valve cartridge for a conventional solenoid valve. - A -
- Figure 2 shows a schematic sectional view of an embodiment of a valve cartridge for a solenoid valve according to the invention.
- FIG. 3 shows an individual sectional view of a valve sleeve of the invention
- FIG. 2 shows an embodiment of a valve cartridge 1 for a solenoid valve according to the invention (high-pressure switching valve), in particular for a hydraulic unit shown.
- the solenoid valve is designed as a two-stage, normally closed switching valve.
- the valve cartridge 1 comprises a pole core 2, a valve insert 4 connected to the pole core 2, an armature 3 guided axially movably inside the valve insert 4, which is coupled to a main closing element 7, and a valve sleeve 17 connected to the valve insert 4.
- the valve sleeve 17 at the same time forms a valve body 8 which forms with the main closing element 7 and its main valve seat 9 between at least a first Strömungsöffhung 12 and a second Strömungsöffhung 13 arranged main valve, via the axial movement of the armature 3 and the main closing element 7 of the main valve seat. 9 is opened against the force of a return spring 5 and closed by the force of the return spring 5, wherein an air gap 6 between the armature 3 and the pole core 2 a maximum possible total stroke ho of the armature 3 pretends.
- Valve insert 4 and the valve sleeve 17 are each designed as a sleeve and connected to each other.
- a sub-valve formed by a side closing member 11 connected to the armature 3 and a sub-valve seat 10 disposed in the main closing member 7 has a small sealing diameter and flow, so that an opening of the Secondary valve is made possible by a Vorstinhub h v against a high pressure, resulting in a partially active or preloaded pressure build-up.
- the main valve with the main valve seat 9, which has a large seat cross-section, and the main closing element 7 allows a large, possible unthrottled flow, resulting in a fully active or self-priming pressure build-up.
- the two-stage solenoid valve is thus designed with a precursor, the secondary valve seat 10 and a main stage, the main valve seat 9 to allow the opening of the solenoid valve even at high differential pressures.
- a magnetic assembly not shown, generates a magnetic force by energizing a coil winding, which the longitudinally movable armature 3 with the secondary closing element 11 and secondary sealing element against the force of a return spring 5 against the pole core
- the main valve seat 9 is not formed by an additional component but by the valve sleeve 17 itself.
- the valve sleeve 17 for this purpose has a funnel-shaped form, which tapers towards the valve end.
- the valve sleeve 17 has a plurality of flow openings 12 on a first, substantially cylindrical portion 20 of the valve sleeve 17. Adjoining the cylindrical portion 20 is a funnel-shaped, second section 21, which merges into a smaller-diameter cylindrical end section 22 of the valve sleeve 17. In the connection region of the funnel-shaped section 21 to the end section 22, a valve seat surface 25 is formed on the inside of the valve sleeve 17, which tapers conically as an annular surface towards the valve end or reduces from an opening cross section 27 to an end cross section 28. The main closing element 7 then bears against this valve seat surface 25 with a correspondingly corresponding, concentric, sealing seat surface 26 as the valve seat body 7.
- the sealing seat surface 26 of the main closing element 7 and the valve seat surface 25 within the valve sleeve 17 thus form the main valve seat 9 of the solenoid valve.
- An open position of the main valve seat 9 takes place with lifted main closing element 7 or lifted sealing seat surface 26 of the main closing element 7 of the valve seat surface 25 of the valve sleeve 17.
- In the closed position of the main valve seat. 9 is the main closing element 7 with its sealing seat surface 26 on the valve seat surface 25 of the valve sleeve 17 sealingly.
- valve sleeve 17 thus exerts the function of a valve body itself, no separate component of a valve body is required. This also eliminates the risk of bypass leakage around the valve body.
- the valve sleeve 17 is preferably made of steel.
- the valve seat surface 25 can be made by stamping the steel valve sleeve 17 so as to obtain a required hardness and wear resistance. Embossing can be done by means of an embossing stamp or the like.
- the main closing element 7 is advantageously made of plastic in order to cooperate so well with the valve seat surface 25 of the valve sleeve 17. Overall, the new design is characterized by its small size.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a solenoid valve having a valve cartridge (1), comprising a pole core (2), a valve insert (4) connected to the pole core (2), an armature (3) that is axially movably guided inside the valve insert (4) and is coupled to a primary closing element (7), and a valve sleeve (17) connected to the valve insert (4), wherein a valve body (8) together with the primary closing element (7) and the primary valve seat (9) thereof forms a primary valve disposed between at least one first flow opening (12) and a second flow opening (13), the axial motion of the armature (3) and of the primary closing element (7) opening the primary valve against the force of a restoring spring (5) and the force of said restoring spring (5) closing said valve, and having a secondary valve formed by a secondary closing element (11) connected to the armature (3) and a secondary valve seat (10) disposed in the primary closing element (7). According to the invention, the valve body (8) is formed by the valve sleeve (17).
Description
Beschreibung description
Titel MagnetventilTitle solenoid valve
Stand der TechnikState of the art
Die Erfindung geht aus von einem Magnetventil nach der Gattung des unabhängigen Patentanspruchs 1.The invention relates to a solenoid valve according to the preamble of independent claim 1.
In ESP-Geräten (Elektronisches Stabilitätsprogramm) kommen im Vergleich zu ABS- Geräten (Antiblockiersystem) zwei Sonderventile zum Einsatz. Eines dieser Ventile ist ein Hochdruck-Schalt- Ventil (HSV). Dieses Hochdruck-Schalt- Ventil (HSV) ermöglicht in einem ersten Fall einen Eingriff in das Bremssystem, ohne dass ein Fahrerwunsch vorliegt. Hierzu muss ein Saugpfad für eine Pumpe geöffnet werden, so dass diese anstelle des Fahrers den benötigten Druck für die Regelung bereitstellen kann. In einem zweiten Fall kann es zu einer Überschneidung zwischen Fahrerwunsch (Bremsen) und ESP- Regelung zum Stabilisieren des Fahrzeuges kommen. Hierzu muss dann dieser Pfad ge- gen den vom Fahrer eingebrachten Druck (Hochdruck) geöffnet werden können.In ESP (Electronic Stability Program) devices, two special valves are used in comparison to ABS devices (Anti-lock Braking System). One of these valves is a high pressure switching valve (HSV). In a first case, this high-pressure shift valve (HSV) makes it possible to intervene in the brake system without the driver requesting it. For this purpose, a suction path for a pump must be opened so that it can provide the required pressure for the control instead of the driver. In a second case, there may be an overlap between driver request (braking) and ESP control to stabilize the vehicle. For this purpose, this path must be able to be opened against the pressure (high pressure) introduced by the driver.
Für diese beiden Fälle ist ein zweistufiges Magnetventil (Hochdruck-Schaltventil), insbesondere für ein Hydraulikaggregat, bereits im Einsatz, dessen Dichtsitze je Anwendungsfall (drucklos, großer Dichtsitz) bzw. Fahrerwunsch (Hochdruck, kleiner Dichtsitz und mit abnehmendem Hochdruck wieder großer Dichtsitz) durch den Anker über die Magnetspule geöffnet werden können. Ein derartiges Magnetventil ist in Figur 1 dargestellt. Wie aus Figur 1 ersichtlich ist, umfasst das bekannte Magnetventil, das als zweistufiges stromlos geschlossenes Schaltventil ausgeführt ist, eine Ventilpatrone 1. Die Ventilpatrone 1 umfasst einen Polkern 2, einen mit dem Polkern 2 verbundenen Ventileinsatz 4, ei- nen innerhalb des Ventileinsatzes 4 axial beweglich geführten Anker 3, der mit einem
Hauptschließelement 7 gekoppelt ist, und eine mit dem Ventileinsatz 4 verbundene Ventilhülse 17. Innerhalb der Ventilhülse 17 ist separat ein ringförmiger Ventilkörper 8 aufgenommen. Der Ventilkörper 8 bildet mit dem Hauptschließelement 7 und seinem Hauptventilsitz 9 ein zwischen mindestens einer ersten Strömungsöffnung 12 und einer zweiten Strömungsöffnung 13 angeordnetes Hauptventil, wobei über die axiale Bewegung des Ankers 3 und des Hauptschließelementes 7 der Hauptventilsitz 9 gegen die Kraft einer Rückstellfeder 5 geöffnet und durch die Kraft der Rückstellfeder 5 geschlossen wird, wobei ein Luftspalt 6 zwischen dem Anker 3 und dem Polkern 2 einen maximal möglichen Gesamthub hG des Ankers 3 vorgibt. Der Ventileinsatz 4 und die Ventilhülse 17 sind jeweils als Hülse ausgeführt und miteinander verbunden.For these two cases, a two-stage solenoid valve (high-pressure switching valve), in particular for a hydraulic unit, already in use, the sealing seats per application (pressure-less, large sealing seat) or driver's request (high pressure, small sealing seat and with decreasing high pressure again large sealing seat) the armature can be opened via the solenoid. Such a solenoid valve is shown in FIG. As is apparent from Figure 1, the known solenoid valve, which is designed as a two-stage normally closed switching valve, a valve cartridge 1. The valve cartridge 1 comprises a pole core 2, a connected to the pole core 2 valve insert 4, one nen within the valve core 4 axially movably guided 3 anchor, which with a Main closing element 7 is coupled, and connected to the valve core 4 valve sleeve 17. Within the valve sleeve 17, an annular valve body 8 is received separately. The valve body 8 forms with the main closing element 7 and its main valve seat 9 between at least a first flow opening 12 and a second flow opening 13 arranged main valve, being opened by the axial movement of the armature 3 and the main closing element 7 of the main valve seat 9 against the force of a return spring 5 and is closed by the force of the return spring 5, wherein an air gap 6 between the armature 3 and the pole core 2 defines a maximum possible total stroke h G of the armature 3. The valve insert 4 and the valve sleeve 17 are each designed as a sleeve and connected to each other.
Durch die zweistufige Ausführung weist ein Nebenventil, das durch ein Nebenschließ- element 11 , das mit dem Anker 3 verbunden ist, und einen Nebenventilsitz 10 gebildet wird, der im Hauptschließelement 7 angeordnet ist, einen kleinen Dichtdurchmesser und Durchfluss auf, so dass eine Öffnung des Nebenventils gegen einen hohen Druck ermöglicht wird, der sich bei einem teilaktiven bzw. vorgeladenem Druckaufbau ergibt. Das Hauptventil mit dem Hauptventilsitz 9, der einen großen Sitzquerschnitt aufweist, und das Hauptschließelement 7 ermöglicht einen großen, möglichst ungedrosselten Durchfluss, der sich bei einem vollaktiven bzw. selbstsaugenden Druckaufbau ergibt.By the two-stage design, a sub-valve formed by a side closing member 11 connected to the armature 3 and a sub-valve seat 10 disposed in the main closing member 7 has a small sealing diameter and flow, so that an opening of the Secondary valve is made possible against a high pressure, resulting in a partially active or preloaded pressure build-up. The main valve with the main valve seat 9, which has a large seat cross-section, and the main closing element 7 allows a large, unthrottled as possible flow, resulting in a fully active or self-priming pressure build-up.
Eine nicht dargestellte Magnetbaugruppe erzeugt durch Bestromung einer Spulenwicklung eine Magnetkraft, die den längsbeweglichen Anker 3 mit dem Nebenschließelement 11 bzw. Nebendichtelement entgegen der Kraft einer Rückstellfeder 5 gegen den Polkern 2 bewegt, wodurch der Nebenventilsitz 10 um den Vorstufenhub hv, welcher Teil des Ge- samthubs hG ist, geöffnet wird. Durch den mit dem Öffnen des Nebenventilsitzes 10 bewirkten Druckausgleich zwischen der mindestens einen ersten Strömungsöffnung 12 und der zweiten Strömungsöffnung 13 bewegt eine Druckfeder 14 unterstützt von Fluidströ- mungskräften das Hauptschließelement 7 in Richtung Anker 3 bzw. Nebenschließelement 11 , wodurch der Hauptventilsitz 9 schlagartig geöffnet und der Nebenventilsitz 10 wieder geschlossen wird.A magnetic assembly, not shown, generates magnetic force by energizing a coil winding, which moves the longitudinally movable armature 3 against the force of a return spring 5 against the pole core 2 with the secondary closing element 11, whereby the secondary valve seat 10 by the Vorstufenhub h v , which part of the Ge - samthubs h G is open. As a result of the pressure compensation between the at least one first flow opening 12 and the second flow opening 13 caused by the opening of the secondary valve seat 10, a compression spring 14 supports the main closing element 7 in the direction of armature 3 or secondary closing element 11 supported by fluid flow forces, whereby the main valve seat 9 is opened abruptly the secondary valve seat 10 is closed again.
Das bekannte Magnetventil besitzt für den Dichtbereich des großen Dichtsitzes 9 ein zusätzliches Bauteil, und zwar den Ventilkörper 8, welcher durch eine Dichtbuchse aus Stahl, die im Vorhergehenden als Hauptschließelement 7 bezeichnet wurde, verschlossen wird.
Offenbarang der ErfindungThe known solenoid valve has an additional component for the sealing area of the large sealing seat 9, namely the valve body 8, which is closed by a sealing bush made of steel, which was referred to above as the main closing element 7. Obviously the invention
Das erfindungsgemäße Magnetventil mit den Merkmalen des unabhängigen Patentan- Spruchs 1 hat demgegenüber den Vorteil, dass ein Entfall des Ventilkörpers möglich ist, was zu einer Kostenreduzierung führt, wobei zusätzlich die Gefahr einer Bypassleckage eliminiert ist. Des Weiteren zeichnet sich die neue Magnetventilkonstruktion ohne den Ventilkörper durch eine größere Einfachheit und insbesondere durch eine Reduzierung der Baugröße des Magnetventils aus.The solenoid valve according to the invention with the features of the independent patent claim 1 has the advantage that a removal of the valve body is possible, resulting in a cost reduction, in addition, the risk of bypass leakage is eliminated. Furthermore, the new solenoid valve construction without the valve body is characterized by a greater simplicity and in particular by a reduction in the size of the solenoid valve.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen und Weiterbildungen sind vorteilhafte Verbesserungen des im unabhängigen Patentanspruch 1 angegebenen Magnetventils möglich.The measures and refinements recited in the dependent claims advantageous improvements of the independent claim 1 solenoid valve are possible.
Vorteilhafterweise besteht die Ventilhülse aus Stahl, wodurch ein fluiddichtes Einpressen in ein Pumpengehäuse und eine fluiddichte Verbindung mit einem Ventileinsatz ermöglicht werden. Zudem ermöglicht dies in einfacher Art und Weise eine Ventilsitzfläche der Ventilhülse durch Prägen der Stahlhülse herzustellen. Der geprägte Ventilsitz ermöglicht einen verschleißreduzierten Betrieb des Hauptventilsitzes auch bei hohen Schaltspielzah- len.Advantageously, the valve sleeve made of steel, whereby a fluid-tight pressing into a pump housing and a fluid-tight connection with a valve core are possible. In addition, this makes it possible in a simple manner to produce a valve seat surface of the valve sleeve by embossing the steel sleeve. The embossed valve seat allows a wear-reduced operation of the main valve seat, even at high switching cycle numbers.
Vorteilhaft ist außerdem, das Hauptschließelement aus Kunststoff herzustellen. Der Dichtsitz bzw. die Ventilsitzfläche kann durch eine Prägung in der Ventilhülse ersetzt werden. Durch den Einsatz einer Kunststoff-Dichtbuchse als Hauptschließelement kann durch die Elastizität des Kunststoffs eine bessere Dichtwirkung mit der geprägten Ventilsitzfläche wie bei vergleichbaren Stahl-Dichtbuchsen erreicht werden. So ist es möglich, auch eine geringfügig geringere Qualität des Dichtsitzes bzw. der Ventilsitzfläche zu akzeptieren.It is also advantageous to produce the main closing element made of plastic. The sealing seat or the valve seat surface can be replaced by a stamping in the valve sleeve. Through the use of a plastic sealing bush as the main closing element can be achieved by the elasticity of the plastic a better sealing effect with the embossed valve seat surface as in comparable steel sealing bushings. So it is possible to accept even a slightly lower quality of the sealing seat or the valve seat surface.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird in der nachfolgenden Beschreibung näher erläutert.An embodiment of the invention is illustrated in the drawings and will be explained in more detail in the following description.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Figur 1 zeigt eine schematische Schnittdarstellung einer Ventilpatrone für ein herkömm- liches Magnetventil.
- A -Figure 1 shows a schematic sectional view of a valve cartridge for a conventional solenoid valve. - A -
Figur 2 zeigt eine schematische Schnittdarstellung eines Ausführungsbeispiels einer Ventilpatrone für ein erfindungsgemäßes Magnetventil.Figure 2 shows a schematic sectional view of an embodiment of a valve cartridge for a solenoid valve according to the invention.
Figur 3 zeigt eine Einzelteilschnittdarstellung einer erfindungsgemäßen Ventilhülse desFIG. 3 shows an individual sectional view of a valve sleeve of the invention
Magnetventils.Solenoid valve.
Ausführungsform der ErfindungEmbodiment of the invention
In Fig. 2 ist ein Ausführungsbeispiel einer Ventilpatrone 1 für ein erfindungsgemäßes Magnetventil (Hochdruck-Schaltventil), insbesondere für ein Hydraulikaggregat, gezeigt. Das Magnetventil ist als zweistufiges, stromlos geschlossenes Schaltventil ausgeführt. Die Ventilpatrone 1 umfasst einen Polkern 2, einen mit dem Polkern 2 verbundenen Ven- tileinsatz 4, einen innerhalb des Ventileinsatzes 4 axial beweglich geführten Anker 3, der mit einem Hauptschließelement 7 gekoppelt ist, und eine mit dem Ventileinsatz 4 verbundene Ventilhülse 17.In Fig. 2 shows an embodiment of a valve cartridge 1 for a solenoid valve according to the invention (high-pressure switching valve), in particular for a hydraulic unit shown. The solenoid valve is designed as a two-stage, normally closed switching valve. The valve cartridge 1 comprises a pole core 2, a valve insert 4 connected to the pole core 2, an armature 3 guided axially movably inside the valve insert 4, which is coupled to a main closing element 7, and a valve sleeve 17 connected to the valve insert 4.
Erfindungsgemäß bildet die Ventilhülse 17 zugleich einen Ventilkörper 8, der mit dem Hauptschließelement 7 und seinem Hauptventilsitz 9 ein zwischen mindestens einer ersten Strömungsöffhung 12 und einer zweiten Strömungsöffhung 13 angeordnetes Hauptventil bildet, wobei über die axiale Bewegung des Ankers 3 und des Hauptschließelementes 7 der Hauptventilsitz 9 gegen die Kraft einer Rückstellfeder 5 geöffnet und durch die Kraft der Rückstellfeder 5 geschlossen wird, wobei ein Luftspalt 6 zwischen dem Anker 3 und dem Polkern 2 einen maximal möglichen Gesamthub ho des Ankers 3 vorgibt. DerAccording to the invention, the valve sleeve 17 at the same time forms a valve body 8 which forms with the main closing element 7 and its main valve seat 9 between at least a first Strömungsöffhung 12 and a second Strömungsöffhung 13 arranged main valve, via the axial movement of the armature 3 and the main closing element 7 of the main valve seat. 9 is opened against the force of a return spring 5 and closed by the force of the return spring 5, wherein an air gap 6 between the armature 3 and the pole core 2 a maximum possible total stroke ho of the armature 3 pretends. Of the
Ventileinsatz 4 und die Ventilhülse 17 sind jeweils als Hülse ausgeführt und miteinander verbunden.Valve insert 4 and the valve sleeve 17 are each designed as a sleeve and connected to each other.
Durch die zweistufige Ausführung weist ein Nebenventil, das durch ein Nebenschließ- element 11 , das mit dem Anker 3 verbunden ist, und einen Nebenventilsitz 10 gebildet wird, der im Hauptschließelement 7 angeordnet ist, einen kleinen Dichtdurchmesser und Durchfluss auf, so dass eine Öffnung des Nebenventils um einen Vorstufenhub hv gegen einen hohen Druck ermöglicht wird, der sich bei einem teilaktiven bzw. vorgeladenem Druckaufbau ergibt. Das Hauptventil mit dem Hauptventilsitz 9, der einen großen Sitz- querschnitt aufweist, und das Hauptschließelement 7 ermöglicht einen großen, möglichst
ungedrosselten Durchfluss, der sich bei einem vollaktiven bzw. selbstsaugenden Druckaufbau ergibt.By the two-stage design, a sub-valve formed by a side closing member 11 connected to the armature 3 and a sub-valve seat 10 disposed in the main closing member 7 has a small sealing diameter and flow, so that an opening of the Secondary valve is made possible by a Vorstufenhub h v against a high pressure, resulting in a partially active or preloaded pressure build-up. The main valve with the main valve seat 9, which has a large seat cross-section, and the main closing element 7 allows a large, possible unthrottled flow, resulting in a fully active or self-priming pressure build-up.
Das zweistufige Magnetventil ist somit mit einer Vorstufe, dem Nebenventilsitz 10 und einer Hauptstufe, dem Hauptventilsitz 9 ausgeführt, um auch bei hohen Differenzdrücken das Öffnen des Magnetventils zu ermöglichen.The two-stage solenoid valve is thus designed with a precursor, the secondary valve seat 10 and a main stage, the main valve seat 9 to allow the opening of the solenoid valve even at high differential pressures.
Eine nicht dargestellte Magnetbaugruppe erzeugt durch Bestromung einer Spulenwicklung eine Magnetkraft, die den längsbeweglichen Anker 3 mit dem Nebenschließelement 11 bzw. Nebendichtelement entgegen der Kraft einer Rückstellfeder 5 gegen den PolkernA magnetic assembly, not shown, generates a magnetic force by energizing a coil winding, which the longitudinally movable armature 3 with the secondary closing element 11 and secondary sealing element against the force of a return spring 5 against the pole core
2 bewegt, wodurch der Nebenventilsitz 10 geöffnet wird. Durch den mit dem Öffnen des Nebenventilsitzes 10 bewirkten Druckausgleich zwischen der mindestens einen ersten Strömungsöffnung 12 und der zweiten Strömungsöffnung 13 bewegt eine Druckfeder 14 unterstützt von Fluidströmungskräften das Hauptschließelement 7 in Richtung Anker 3 bzw. Nebenschließelement 11, wodurch der Hauptventilsitz 9 schlagartig geöffnet und der Nebenventilsitz 10 wieder geschlossen wird.2 moves, whereby the secondary valve seat 10 is opened. By causing the opening of the secondary valve seat 10 pressure equalization between the at least one first flow opening 12 and the second flow opening 13 moves a compression spring 14 supported by fluid flow forces the main closing element 7 toward armature 3 and Nebenschließelement 11, whereby the main valve seat 9 is opened abruptly and the secondary valve seat 10 is closed again.
Erfindungsgemäß wird der Hauptventilsitz 9 nicht von einem zusätzlichen Bauteil gebildet, sondern von der Ventilhülse 17 selbst. Wie in der Fig. 3 deutlicher dargestellt, hat die Ventilhülse 17 hierzu eine trichterförmige Form, die sich zum Ventilende hin verjüngt.According to the invention, the main valve seat 9 is not formed by an additional component but by the valve sleeve 17 itself. As shown more clearly in FIG. 3, the valve sleeve 17 for this purpose has a funnel-shaped form, which tapers towards the valve end.
Die Ventilhülse 17 weist mehrere Strömungsöffnungen 12 an einem ersten, im Wesentlichen zylindrischen Abschnitt 20 der Ventilhülse 17 auf. An den zylindrischen Abschnitt 20 schließt sich ein trichterförmig zulaufender, zweiter Abschnitt 21 an, der in ein durchmesserkleineren zylindrischen Endabschnitt 22 der Ventilhülse 17 übergeht. Im An- Schlussbereich des trichterförmigen Abschnitts 21 an den Endabschnitt 22 ist innenseitig der Ventilhülse 17 eine Ventilsitzfläche 25 ausgebildet, die sich als Ringfläche zum Ventilende hin konisch verjüngt bzw. sich von einem Öffnungsquerschnitt 27 auf einen Endquerschnitt 28 verringert. An dieser Ventilsitzfläche 25 liegt dann das Hauptschließelement 7 mit einer entsprechend korrespondierend, kugelförmig zulaufenden Dichtsitzflä- che 26 als Ventilsitzkörper 7 an. Die Dichtsitzfläche 26 des Hauptschließelements 7 und die Ventilsitzfläche 25 innerhalb der Ventilhülse 17 bilden somit den Hauptventilsitz 9 des Magnetventils. Eine Offenstellung des Hauptventilsitzes 9 erfolgt bei abgehobenen Hauptschließelement 7 bzw. abgehobener Dichtsitzfläche 26 des Hauptschließelements 7 von der Ventilsitzfläche 25 der Ventilhülse 17. In Schließstellung des Hauptventilsitzes 9
liegt das Hauptschließelement 7 mit seiner Dichtsitzfläche 26 an der Ventilsitzfläche 25 der Ventilhülse 17 dichtend an.The valve sleeve 17 has a plurality of flow openings 12 on a first, substantially cylindrical portion 20 of the valve sleeve 17. Adjoining the cylindrical portion 20 is a funnel-shaped, second section 21, which merges into a smaller-diameter cylindrical end section 22 of the valve sleeve 17. In the connection region of the funnel-shaped section 21 to the end section 22, a valve seat surface 25 is formed on the inside of the valve sleeve 17, which tapers conically as an annular surface towards the valve end or reduces from an opening cross section 27 to an end cross section 28. The main closing element 7 then bears against this valve seat surface 25 with a correspondingly corresponding, concentric, sealing seat surface 26 as the valve seat body 7. The sealing seat surface 26 of the main closing element 7 and the valve seat surface 25 within the valve sleeve 17 thus form the main valve seat 9 of the solenoid valve. An open position of the main valve seat 9 takes place with lifted main closing element 7 or lifted sealing seat surface 26 of the main closing element 7 of the valve seat surface 25 of the valve sleeve 17. In the closed position of the main valve seat. 9 is the main closing element 7 with its sealing seat surface 26 on the valve seat surface 25 of the valve sleeve 17 sealingly.
Da die Ventilhülse 17 somit selbst die Funktion eines Ventilkörpers ausübt, ist kein sepa- rates Bauteil eines Ventilkörpers erforderlich. Damit ist auch die Gefahr einer Bypassle- ckage um den Ventilkörper herum gebannt.Since the valve sleeve 17 thus exerts the function of a valve body itself, no separate component of a valve body is required. This also eliminates the risk of bypass leakage around the valve body.
Die Ventilhülse 17 ist vorzugsweise aus Stahl hergestellt. Die Ventilsitzfläche 25 kann durch Prägen der Stahlventilhülse 17 erfolgen, um so eine erforderliche Härte und Ver- Schleißfestigkeit zu erhalten. Das Prägen kann mittels Prägestempel oder ähnlichem erfolgen. Das Hauptschließelement 7 ist vorteilhafterweise aus Kunststoff hergestellt, um so gut mit der Ventilsitzfläche 25 der Ventilhülse 17 zusammenzuwirken. Die neue Konstruktion zeichnet sich insgesamt durch eine geringe Baugröße aus.The valve sleeve 17 is preferably made of steel. The valve seat surface 25 can be made by stamping the steel valve sleeve 17 so as to obtain a required hardness and wear resistance. Embossing can be done by means of an embossing stamp or the like. The main closing element 7 is advantageously made of plastic in order to cooperate so well with the valve seat surface 25 of the valve sleeve 17. Overall, the new design is characterized by its small size.
.oOo.
.oOo.
Claims
1. Magnetventil mit einer Ventilpatrone (1), umfassend einen Polkern (2), einen mit dem Polkern (2) verbundenen Ventileinsatz (4), einen innerhalb des Ventileinsatzes (4) axial be- weglich geführten Anker (3), der mit einem Hauptschließelement (7) gekoppelt ist, und eine mit dem Ventileinsatz (4) verbundene Ventilhülse (17), wobei ein Ventilkörper (8) mit dem Hauptschließelement (7) und seinem Hauptventilsitz (9) ein zwischen mindestens einer ersten Strömungsöffnung (12) und einer zweiten Strömungsöffnung (13) angeordnetes Hauptventil bildet, das über die axiale Bewegung des Ankers (3) und des Hauptschließele- ments (7) das Hauptventil gegen die Kraft einer Rückstellfeder (5) geöffnet und durch die1. Solenoid valve with a valve cartridge (1), comprising a pole core (2), a valve core (2) connected to the valve insert (4), within the valve insert (4) axially movable armature (3), which with a Main closing element (7) is coupled, and a valve sleeve (17) connected to the valve core (4), wherein a valve body (8) with the main closing element (7) and its main valve seat (9) between at least a first flow opening (12) and a the main valve arranged via the axial movement of the armature (3) and the Hauptschließele- element (7), the main valve against the force of a return spring (5) and through the
Kraft der Rückstellfeder (5) geschlossen wird, und mit einem Nebenventil, gebildet durch ein mit dem Anker (3) verbundenes Nebenschließelement (11) und einen Nebenventilsitz (10), der im Hauptschließelement (7) angeordnet ist, dadurch gekennzeichnet, dass der Ventilkörper (8) von der Ventilhülse (17) gebildet ist.Force of the return spring (5) is closed, and with a secondary valve, formed by an armature (3) connected to the secondary closing element (11) and a secondary valve seat (10) which is arranged in the main closing element (7), characterized in that the valve body (8) is formed by the valve sleeve (17).
2. Magnetventil nach Anspruch 1, dadurch gekennzeichnet, dass die Ventilhülse (17) aus Stahl besteht.2. Solenoid valve according to claim 1, characterized in that the valve sleeve (17) consists of steel.
3. Magnetventil nach Anspruch 2, dadurch gekennzeichnet, dass eine Ventilsitzfläche (25) durch Prägen der Ventilhülse (17) herstellbar ist.3. Solenoid valve according to claim 2, characterized in that a valve seat surface (25) by embossing the valve sleeve (17) can be produced.
4. Magnetventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Hauptschließelement (7) aus Kunststoff besteht.4. Solenoid valve according to one of the preceding claims, characterized in that the main closing element (7) consists of plastic.
.oOo. .oOo.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810001864 DE102008001864A1 (en) | 2008-05-19 | 2008-05-19 | magnetic valve |
| DE102008001864.3 | 2008-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009141191A1 true WO2009141191A1 (en) | 2009-11-26 |
Family
ID=40765601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/053681 WO2009141191A1 (en) | 2008-05-19 | 2009-03-27 | Solenoid valve |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102008001864A1 (en) |
| WO (1) | WO2009141191A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3246218A1 (en) * | 2010-02-03 | 2017-11-22 | Kelsey-Hayes Company | Electromagnetic valve |
| CN112747124A (en) * | 2019-10-30 | 2021-05-04 | 罗伯特·博世有限公司 | Two-stage solenoid valve |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010003958A1 (en) * | 2010-04-14 | 2011-10-20 | Robert Bosch Gmbh | magnetic valve |
| DE102013218121A1 (en) * | 2013-09-11 | 2015-03-12 | Continental Teves Ag & Co. Ohg | Electromagnetic valve, in particular for slip-controlled motor vehicle brake systems |
| DE102013225470A1 (en) | 2013-12-10 | 2015-06-11 | Robert Bosch Gmbh | Two-stage solenoid valve and brake system for one vehicle |
| DE102015218263A1 (en) | 2015-09-23 | 2017-03-23 | Robert Bosch Gmbh | magnetic valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001000473A1 (en) * | 1999-06-23 | 2001-01-04 | Continental Teves Ag & Co. Ohg | Solenoid valve, especially for hydraulic brake systems with slip control |
| WO2001030626A1 (en) * | 1999-10-26 | 2001-05-03 | Continental Teves Ag & Co. Ohg | Electromagnetic anti-valve, in particular for hydraulic brake systems having a slip regulator |
| WO2001066396A1 (en) * | 2000-03-04 | 2001-09-13 | Continental Teves Ag & Co. Ohg | Solenoid valve, in particular for slip-controlled motor vehicle braking systems |
| DE10334684A1 (en) * | 2002-08-06 | 2004-02-26 | Husco International Inc., Waukesha | Electrohydraulic fluid control valve with high flow rate has control element with solenoid coil and armature for moving closure part from first valve seat to second valve against spring force |
| WO2007101733A1 (en) * | 2006-01-31 | 2007-09-13 | Robert Bosch Gmbh | Solenoid valve, especially for a hydraulic unit |
-
2008
- 2008-05-19 DE DE200810001864 patent/DE102008001864A1/en not_active Withdrawn
-
2009
- 2009-03-27 WO PCT/EP2009/053681 patent/WO2009141191A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001000473A1 (en) * | 1999-06-23 | 2001-01-04 | Continental Teves Ag & Co. Ohg | Solenoid valve, especially for hydraulic brake systems with slip control |
| WO2001030626A1 (en) * | 1999-10-26 | 2001-05-03 | Continental Teves Ag & Co. Ohg | Electromagnetic anti-valve, in particular for hydraulic brake systems having a slip regulator |
| WO2001066396A1 (en) * | 2000-03-04 | 2001-09-13 | Continental Teves Ag & Co. Ohg | Solenoid valve, in particular for slip-controlled motor vehicle braking systems |
| DE10334684A1 (en) * | 2002-08-06 | 2004-02-26 | Husco International Inc., Waukesha | Electrohydraulic fluid control valve with high flow rate has control element with solenoid coil and armature for moving closure part from first valve seat to second valve against spring force |
| WO2007101733A1 (en) * | 2006-01-31 | 2007-09-13 | Robert Bosch Gmbh | Solenoid valve, especially for a hydraulic unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3246218A1 (en) * | 2010-02-03 | 2017-11-22 | Kelsey-Hayes Company | Electromagnetic valve |
| CN112747124A (en) * | 2019-10-30 | 2021-05-04 | 罗伯特·博世有限公司 | Two-stage solenoid valve |
| CN112747124B (en) * | 2019-10-30 | 2023-10-24 | 罗伯特·博世有限公司 | Two-stage electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008001864A1 (en) | 2009-11-26 |
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