WO2010051823A1 - Électrovanne antigivre à l'épreuve des vibrations - Google Patents

Électrovanne antigivre à l'épreuve des vibrations Download PDF

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Publication number
WO2010051823A1
WO2010051823A1 PCT/EP2008/009312 EP2008009312W WO2010051823A1 WO 2010051823 A1 WO2010051823 A1 WO 2010051823A1 EP 2008009312 W EP2008009312 W EP 2008009312W WO 2010051823 A1 WO2010051823 A1 WO 2010051823A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
solenoid valve
sleeve
bore
biasing device
Prior art date
Application number
PCT/EP2008/009312
Other languages
English (en)
Inventor
Jan Pampel
Friedrich Knappmeier
Original Assignee
Norgren Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norgren Gmbh filed Critical Norgren Gmbh
Priority to PCT/EP2008/009312 priority Critical patent/WO2010051823A1/fr
Publication of WO2010051823A1 publication Critical patent/WO2010051823A1/fr

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
    • 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
    • F16K31/0658—Armature and valve member being one single element

Definitions

  • the present invention relates to a solenoid valve, and more particularly, to a frost proof, vibration resistant solenoid valve.
  • a solenoid valve comprises a valve body containing a valve mechanism.
  • the valve mechanism regulates fluid flow between one or more inlet ports and one or more outlet ports. Consequently, the valve body includes at least one port that is blocked or unblocked by the valve mechanism.
  • the valve mechanism of the solenoid valve includes an electromagnet coil and an armature. The armature moves in response to the energization and deactivation of the electromagnet coil. The armature can therefore selectively contact and unblock a port in order to perform the valve function.
  • a solenoid valve in a motor vehicle must be designed for a harsh environment, including freezing or sub- freezing temperatures.
  • a solenoid valve will be subject to vibration that can cause wear or damage.
  • urea is becoming increasingly common to inject urea into an exhaust stream in order to reduce engine nitrogen oxide emissions, such as in diesel engines, for example.
  • the injected urea reacts with the engine exhaust stream and converts nitrogen oxides into nitrogen and water, which can be safely expelled from the vehicle's exhaust.
  • the urea which includes water, can freeze in a valve that is used to deliver the urea. Freezing liquid present in a valve can expand and damage or destroy the valve. In addition, vibration due to the engine of the vehicle can cause extra wear in the solenoid valve.
  • a frost proof, vibration resistant solenoid valve is provided according to an embodiment of the invention.
  • the solenoid valve comprises an armature tube within a coil assembly, an armature sleeve located within the armature tube, a pole piece located in the armature tube, and an armature configured to reciprocate within the armature sleeve.
  • the armature is configured to move in the armature tube toward and away from a valve seat under an influence of the coil assembly.
  • a frost proof, vibration resistant solenoid valve is provided according to an embodiment of the invention.
  • the solenoid valve comprises an armature tube within a coil assembly, an armature sleeve located within the armature tube, a pole piece located in the armature tube, and a compressible ring positioned between the pole piece and an upper end of the armature tube. The compressible ring allows the pole piece to move when a fluid in the solenoid valve freezes.
  • a frost proof, vibration resistant solenoid valve is provided according to an embodiment of the invention.
  • the solenoid valve comprises an armature configured to reciprocate within a coil assembly.
  • the armature is configured to move in the armature tube toward and away from a valve seat under an influence of the coil assembly.
  • the solenoid valve further comprises a bore formed in the armature, a biasing device positioned at least partially in the bore and abutting a pole piece in the coil assembly, and a biasing device sleeve positioned in the bore between the biasing device and the armature.
  • a frost proof, vibration resistant solenoid valve is provided according to an embodiment of the invention.
  • the solenoid valve comprises an armature configured to reciprocate within a coil assembly.
  • the armature is configured to move in the armature tube toward and away from a valve seat under an influence of the coil assembly.
  • the solenoid valve further comprises a bore formed in the armature, a biasing device positioned at least partially in the bore, and a stopper located in the bore and configured to contact the valve seat when the armature is at a closed position and further configured to move in the bore if a fluid in the solenoid valve freezes.
  • the armature sleeve creates a predetermined air gap between the armature and the pole piece.
  • the armature sleeve is formed of a deformable material. In yet another aspect of the solenoid valve, the armature sleeve is formed of a non-metallic material. In yet another aspect of the solenoid valve, the solenoid valve further comprises a compressible ring positioned between the pole piece and an upper end of the armature tube, wherein the compressible ring allows the armature and the pole piece to move when a fluid in the solenoid valve freezes.
  • the solenoid valve further comprises a bore formed in the armature, a biasing device positioned at least partially in the bore, and a biasing device sleeve positioned in the bore between the biasing device and the armature.
  • the biasing device sleeve is formed of a non-metallic material.
  • the biasing device sleeve is formed of a deformable material.
  • the solenoid valve further comprises a pole piece located in the armature tube, a bore formed in the armature, a biasing device positioned at least partially in the bore, and a stopper located in the bore and configured to contact the valve seat when the armature is at a closed position and further configured to move in the bore if a fluid in the solenoid valve freezes.
  • the solenoid valve further comprises an armature configured to reciprocate within the armature sleeve, with the armature being configured to move in the armature sleeve toward and away from a valve seat under the influence of the coil assembly, wherein the compressible ring allows the armature and the pole piece to move when a fluid in the solenoid valve freezes.
  • the solenoid valve further comprises a stopper located in the bore and configured to contact the valve seat when the armature is at a closed position and further configured to move in the bore if a fluid in the solenoid valve freezes.
  • the solenoid valve further comprises an armature tube within the coil assembly, an armature sleeve located within the armature tube, and the pole piece located in the armature tube.
  • the solenoid valve further comprises a biasing device sleeve positioned in the bore between the biasing device and the armature.
  • the solenoid valve further comprises an armature sleeve located within the armature tube.
  • the solenoid valve further comprises an armature tube within the coil assembly, an armature sleeve located within the armature tube, wherein the armature is configured to reciprocate within the armature sleeve, and a pole piece located in the armature tube.
  • FIG. 1 shows a frost proof, vibration resistant solenoid valve according to an embodiment of the invention.
  • FIG. 2 shows the frost proof, vibration resistant solenoid valve when the coil assembly is not activated.
  • FIGS. 1-2 and the following description depict specific examples to teach those skilled in the art how to make and use the best mode of the invention. For the purpose of teaching inventive principles, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these examples that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As a result, the invention is not limited to the specific examples described below, but only by the claims and their equivalents.
  • FIG. 1 shows a frost proof, vibration resistant solenoid valve 100 according to an embodiment of the invention.
  • the solenoid valve 100 includes a base 101, a coil assembly 102, a frame 103, and a valve body 105 including a valve seat 106.
  • the valve seat 106 includes a first port 130.
  • the base 101, the coil assembly 102, and the valve body 105 is held within the frame 103 in some embodiments, but alternatively can be otherwise assembled.
  • the valve body 105 includes a first port 130 and at least a second 132 port. It should be understood as to more than two ports can be included in the valve body 105.
  • the ports can admit fluid into and out of the valve body 105, wherein the armature 113 blocks and unblocks the first port 130.
  • the figure shows the frost proof, vibration resistant solenoid valve 100 when the coil assembly 102 is activated. As a result, the armature 113 is lifted upward by the coil assembly 102, against the biasing force provided by the biasing device 116. The lifting of the armature 113 unblocks the first port 130. As a result, fluid (whether gas or liquid) can flow between the first port 130 and the second port 132 in the port embodiment shown.
  • the solenoid valve 100 further includes an armature tube 111 within the coil assembly 102.
  • a pole piece 110 and an armature 113 are located within the armature tube 111.
  • the armature 113 is located in the lower end of the armature tube 111 (with respect to the drawing) and the pole piece 110 is located at an upper end.
  • the armature tube 111 can be any shape, including substantially cylindrical, as shown.
  • the armature tube 111 can be assembled to the base 101 and the valve body 105.
  • the armature tube 111 can be substantially sealed to the base 101 and the valve body 105. Consequently, there is no possibility of leakage of gas or fluid out of the armature tube 111.
  • the armature tube 111 can be formed of a metal in some embodiments.
  • An armature sleeve 119 is positioned within the armature tube 111 and is substantially coaxial with the armature tube 111.
  • the armature sleeve 119 in some embodiments is trapped and held between the valve seat 105 and the pole piece 110.
  • the armature sleeve 119 is longer than the armature 113 in order to create a predetermined air gap 140 between the armature 113 and the pole piece 110.
  • the armature sleeve 119 can hold the pole piece 110 substantially in position.
  • the armature sleeve 119 can be formed of a non-metallic material in some embodiments.
  • the armature sleeve 119 can be formed of a deformable material in some embodiments.
  • the armature sleeve 119 can be formed of a plastic.
  • other materials are contemplated and are within the scope of the description and claims.
  • the armature 113 is configured to reciprocate within the armature sleeve 119 located within the armature tube 111. In some embodiments, due to the armature sleeve 119, there is no metal-to-metal contact between the armature 113 and the armature tube 111, for example. The armature 113 further contacts the valve seat 106 in a normally closed position. When the coil assembly 102 is activated, the armature 113 moves in the armature tube 111 away from the valve seat 106 to an unblocking position and toward the pole piece 110. The armature 113 can therefore move to at least blocking and unblocking positions with respect to the valve seat 106 and the first port 130.
  • the armature 113 is held at a normally closed (NC) position by a biasing device 116 positioned between the armature 113 and the pole piece 110, where an upper end of the biasing device 116 contacts the pole piece 110.
  • the biasing device 116 is substantially coaxial with the armature 113.
  • the solenoid valve 100 could comprise a normally open (NO) valve.
  • biasing device 116 rests in a bore 124 in the armature 113.
  • the biasing device 116 exerts a downward force against the armature 113. Consequently, when the coil assembly 102 is not activated, the biasing device 116 urges the armature 113 toward the NC position.
  • the biasing device 116 is positioned within a bore 124 in the armature 113.
  • a biasing device sleeve 122 is further included in the bore 124 and is positioned between the biasing device 116 and the wall of the bore 124.
  • the biasing device sleeve 122 in some embodiments is formed of a non-metallic material.
  • the biasing device sleeve 122 can be formed of a deformable material in some embodiments.
  • the biasing device sleeve 122 can be formed of a plastic. Consequently, the biasing device sleeve 122 can prevent a metal-to-metal contact between the armature 113 and the biasing device 116.
  • other materials are contemplated and are within the scope of the description and claims.
  • the armature 113 further includes a stopper 127.
  • the stopper 127 may comprise a deformable material that at least partially conforms to the valve seat 106.
  • the stopper 127 can be formed of a rubber material or other elastomeric material.
  • the stopper 127 can cushion at least some of the closing impact, preventing rebound opening and lengthening the life of the solenoid valve 100.
  • the armature 113 can further contact a portion of the valve body 105 in order to direct at least part of the closing force away from the stopper 127.
  • the stopper 127 also resides in the bore 124.
  • the bore 124 can include a shoulder 128 that retains the stopper 127.
  • the stopper 127 it is possible for the stopper 127 to move upwards in the figure, against the force provided by the biasing device 116. As a result, the stopper 127 can be forced to retract at least somewhat if a liquid in the solenoid valve 100 freezes.
  • the solenoid valve 100 can further include a compression ring 112.
  • the compression ring 112 is located at the upper end of the armature tube 111 and is compressed at least partially against the upper end by the pole piece 110. Compression of the compression ring 112 allows for limited upward movement of the armature 113 in the event that a liquid in the solenoid valve 100 freezes.
  • the compression ring 112 performs two functions. First, the compression ring 112 can deform and allow fluid in the valve to freeze. Second, the compression ring 112 can accommodate tolerance variations in the valve components, enabling a lower cost and less problematic solenoid valve.
  • the compression ring 112 can be formed in any suitable compressible material, such as rubber, for example. However, other elastomeric materials can be used to perform the compression ring 112.
  • the frost proof solenoid valve 100 When the frost proof solenoid valve 100 is used for a liquid, the liquid will typically expand when it changes phase to a solid ⁇ i.e., when it freezes). This is also true of liquids that comprise a percentage of water, such as urea, for example. As a consequence, the valve must be able to accommodate some expansion of the fluid and cannot be damaged by freezing of the fluid.
  • FIG. 2 shows the frost proof, vibration resistant solenoid valve 100 when the coil assembly 102 is not activated.
  • the armature 113 is pressed downward by the biasing device 116 and contacts the valve seat 106, blocking (and substantially sealing) the first port 130.
  • no fluid i.e., gas or liquid
  • a predetermined air gap 140 exists between the armature 113 and the pole piece 110.
  • the solenoid valve 100 can accommodate a freezing liquid.
  • the solenoid valve 100 can accommodate vibration in its environment and internal vibration caused by valve operation.
  • the solenoid valve 100 according to some of the embodiments eliminates metal-to-metal contact of the working parts.
  • the solenoid valve 100 according to some of the embodiments comprises a more durable solenoid valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

La présente invention concerne une électrovanne antigivre à l'épreuve des vibrations (100). Cette électrovanne (100) comporte un tube d'induit (111) à l'intérieur d'un ensemble bobine (102), un manchon d'induit (119), un pôle inducteur (110) situé dans le tube d'induit (111), et un induit (113) configuré mobile en va-et-vient dans le manchon d'induit (119) situé à l'intérieur du tube d'induit. Dans le manchon d'induit (119), l'induit (113) est configuré pour se rapprocher et s'éloigner du siège de vanne (106) sous l'action de l'ensemble bobine (102).
PCT/EP2008/009312 2008-11-05 2008-11-05 Électrovanne antigivre à l'épreuve des vibrations WO2010051823A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/009312 WO2010051823A1 (fr) 2008-11-05 2008-11-05 Électrovanne antigivre à l'épreuve des vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/009312 WO2010051823A1 (fr) 2008-11-05 2008-11-05 Électrovanne antigivre à l'épreuve des vibrations

Publications (1)

Publication Number Publication Date
WO2010051823A1 true WO2010051823A1 (fr) 2010-05-14

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Family Applications (1)

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PCT/EP2008/009312 WO2010051823A1 (fr) 2008-11-05 2008-11-05 Électrovanne antigivre à l'épreuve des vibrations

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611413A1 (fr) * 2018-08-17 2020-02-19 Thomas Magnete GmbH Compensation de la pression de glace dans une soupape
EP3611412A1 (fr) * 2018-08-17 2020-02-19 Thomas Magnete GmbH Soupape pourvue de dispositif de protection

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1190846A (fr) * 1958-01-29 1959-10-15 Vanne à trois voies à commande électromagnétique avec dispositif de décharge
US4632358A (en) * 1984-07-17 1986-12-30 Eaton Corporation Automotive air conditioning system including electrically operated expansion valve
WO1999049251A1 (fr) * 1998-03-24 1999-09-30 Helvoet B.V. Armature d'aimant
EP1077340A2 (fr) * 1999-08-19 2001-02-21 Parker-Hannifin Corporation Noyau plongeur d'une soupape
US20030107016A1 (en) * 2001-12-07 2003-06-12 Santos Burrola Electromagnetically energized actuator
JP2005344780A (ja) * 2004-06-01 2005-12-15 Toyota Motor Corp 電磁弁
DE102005014100A1 (de) * 2004-07-15 2006-02-02 Continental Teves Ag & Co. Ohg Elektromagnetventil, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen
US20060254648A1 (en) * 2004-05-18 2006-11-16 Hydraulik-Ring Gmbh Freeze-resistant metering valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1190846A (fr) * 1958-01-29 1959-10-15 Vanne à trois voies à commande électromagnétique avec dispositif de décharge
US4632358A (en) * 1984-07-17 1986-12-30 Eaton Corporation Automotive air conditioning system including electrically operated expansion valve
WO1999049251A1 (fr) * 1998-03-24 1999-09-30 Helvoet B.V. Armature d'aimant
EP1077340A2 (fr) * 1999-08-19 2001-02-21 Parker-Hannifin Corporation Noyau plongeur d'une soupape
US20030107016A1 (en) * 2001-12-07 2003-06-12 Santos Burrola Electromagnetically energized actuator
US20060254648A1 (en) * 2004-05-18 2006-11-16 Hydraulik-Ring Gmbh Freeze-resistant metering valve
JP2005344780A (ja) * 2004-06-01 2005-12-15 Toyota Motor Corp 電磁弁
DE102005014100A1 (de) * 2004-07-15 2006-02-02 Continental Teves Ag & Co. Ohg Elektromagnetventil, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611413A1 (fr) * 2018-08-17 2020-02-19 Thomas Magnete GmbH Compensation de la pression de glace dans une soupape
EP3611412A1 (fr) * 2018-08-17 2020-02-19 Thomas Magnete GmbH Soupape pourvue de dispositif de protection
DE102018120080A1 (de) * 2018-08-17 2020-02-20 Thomas Magnete Gmbh Ventil mit Schutzeinrichtung
DE102018120078A1 (de) * 2018-08-17 2020-02-20 Thomas Magnete Gmbh Ventil mit Schutzeinrichtung
DE102018120080B4 (de) * 2018-08-17 2020-10-15 Thomas Magnete Gmbh Ventil mit Schutzeinrichtung
DE102018120078B4 (de) * 2018-08-17 2020-10-22 Thomas Magnete Gmbh Ventil mit Schutzeinrichtung

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