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WO1992018810A1 - Vanne d'arret electromagnetique - Google Patents

Vanne d'arret electromagnetique Download PDF

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Publication number
WO1992018810A1
WO1992018810A1 PCT/EP1991/001128 EP9101128W WO9218810A1 WO 1992018810 A1 WO1992018810 A1 WO 1992018810A1 EP 9101128 W EP9101128 W EP 9101128W WO 9218810 A1 WO9218810 A1 WO 9218810A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
shut
valve
atomizing
net
Prior art date
Application number
PCT/EP1991/001128
Other languages
German (de)
English (en)
Inventor
Walter Steeb
Rafael Benavides
Werner DÖHLA
Original Assignee
Rapa Rausch & Pausch Elektrotechnische Spezialfabrik 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
Priority claimed from DE4112627A external-priority patent/DE4112627C2/de
Priority claimed from DE19914115775 external-priority patent/DE4115775A1/de
Application filed by Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh filed Critical Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh
Publication of WO1992018810A1 publication Critical patent/WO1992018810A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space

Definitions

  • the invention relates to an electromagnetic shut-off valve for installation in oil pressure atomization burners with a flow channel for the fuel liquid extending in the direction of the magnetic axis, which carries an oil atomization nozzle on the outlet side and a sealing element which can be lifted off the valve by the magnet armature and a valve housing-fixed valve against spring force has electrical magnetic coil connection.
  • Solenoid connection undefined along the outer surface of the solenoid valve housing.
  • the solenoid valve housing is rotatably adjustable fixed or aligned with the electrical connection element, is non-rotatably connected to the nozzle holder or a preheater for the fuel liquid, and has an outer diameter which is essentially the diameter of the nozzle holder or corresponds to the preheater and the magnet coil of which is designed for a protective low voltage.
  • the shut-off valve thus introduced between the preheater or the nozzle holder and the atomizing nozzle allows the fuel liquid to be shut off immediately before or in the atomizing nozzle, as a result of which only a small volume of fuel liquid remains in this area, which avoids dripping processes of fuel liquid.
  • the adjustment of the diameter of the shut-off valve and preheater or nozzle holder results in unobstructed blower air flow in the direction of the atomizer nozzle, while the protective extra-low voltage, for example by eliminating the maintenance of electrically necessary distances, minimizes the size of the shut-off valve, which allows the blower air guidance cheaply supported.
  • the solenoid valve housing is cylindrical on the outside and is provided with diametrically arranged key surfaces to simplify assembly in the outer surface.
  • the solenoid valve housing tightly and firmly receives a guide sleeve, in which a magnetic core is immersed in a displacement-free manner, the magnet armature is displaceably guided, and the valve seat is designed in one piece, preferably bent or molded.
  • the solenoid valve housing has, over a partial length, an opening for the introduction of the solenoid coil into the solenoid valve housing, which extends approximately over half the circumference thereof, and in that the assembly opening can be closed by an attachable molded part.
  • the magnet coil can be inserted into the magnet housing safely, quickly and without damage via the mounting opening. This provides the prerequisites for separate prefabrication of the magnetic valve housing and solenoid.
  • the magnet armature and the magnet core are provided with axial through openings for the fuel liquid which extend in series, the through opening of the magnet armature being widened at the end facing the atomizing nozzle to form a chamber which accommodates the sealing element with play against spring force .
  • the through openings allow a barrier-free and safe discharge of fuel liquid to the valve seat.
  • the sealing element is expediently formed by a profile body which, at a radial distance from the valve seat area, has indentations, recesses or bores serving as axial flow channels for the fuel liquid, via which the fuel liquid flows to the opening of the valve seat when the sealing element is open.
  • the electrical magnet coil connection is an electrical connecting element, e.g. Has plug pin-bearing housing made of a highly heat-resistant material, which is firmly placed on the circumferential surface of the solenoid valve housing. Any damage to the housing due to the effects of heat is advantageous by applying a reflective surface for the heat radiation, e.g. an overlay made of a metallic material, avoidable.
  • the solenoid valve housing is provided at the end further from the atomizing nozzle with a sleeve-shaped extension having an external thread and can be fixed to the nozzle holder or preheater with this extension, while at the end closer to the atomizing nozzle a further sleeve-shaped extension with an internal thread for the atomizing nozzle is fixed.
  • this extension can concentrically enclose a sleeve-shaped pin at a distance, which dips into the nozzle space of the atomizing nozzle as a filler.
  • the extension of the solenoid valve housing which is arranged on the end further away from the atomizing nozzle, is cylindrically smooth on the outside and by an extension on the nozzle holder or preheater or the solenoid valve housing can be fixed on a ring collar supporting union nut on the nozzle holder or preheater.
  • the solenoid valve housing can also be attached to the nozzle holder or preheater in any other way. It is conceivable that the solenoid valve housing by means of a bayonet connection on the nozzle holder or
  • the extension provided at the end remote from the atomizing nozzle can be provided with an internal thread or have a bayonet connection, by means of which a fuel liquid filter can be held on the extension.
  • the solenoid valve housing can also have a receiving space between the valve seat and the atomizing nozzle for a fuel liquid filter presented to the atomizing nozzle.
  • Preheater proved the arrangement of heat-conducting elements as appropriate.
  • the heat-conducting elements can be made from a highly heat-conductive material by means of strips or inserts
  • a further minimization of the unconfined volume of the fuel liquid in the atomizing nozzle and a quick and safe automatic venting of the cavity between the shut-off valve and atomizing nozzle can also be achieved if a distributor body is arranged in the cavity between the receptacle and the atomizing nozzle, with the formation of gap spaces, which is fixed at least one opening into the column spaces Passage channel or a guide surface for the Brennflüs ⁇ liquid and that the fuel liquid emerging from the distributor body by means of the passage channel or the guide surface in the cavity can be given a rotational movement.
  • the distributor body can be of any design, for example, pot-shaped, and can have a plurality of passage channels or guide surfaces opening out into the peripheral surface.
  • the distributor body can also be designed in the form of a disk, with recesses, recesses, guide surfaces or the like being used as passage channels in the end face facing away from the atomizing nozzle. are provided.
  • the through-channels through bores made between the two end faces which are connected to an axial inlet opening for the fuel liquid, for example heating oil.
  • the rapid venting of the cavity achieved in this way proves to be particularly advantageous after changing the nozzle.
  • the injecting of fuel liquid, for example heating oil, is minimized when the atomizing burner is switched off and completely prevented when the receptacle is designed as a solenoid valve.
  • the distributor body is provided with passage channels or guide surfaces curved in the same arc, or with the same direction in a straight line with an acute angle radial direction inclined passage channels or guide surfaces.
  • the distributor body is formed by a molded part made of a metallic material or plastic, and the passage channels or guide surfaces are formed by cuts, bends, expressions or the like. to achieve.
  • the distributor body designed in this way can preferably be formed by a sheet metal molded part or an injection molded part. It is also conceivable for the distributor body to consist of a solid body that can be machined, e.g. to form from metal or a plastic. In this case, grooves, bores or the like can optionally be used as passage channels. come into use.
  • a rubber material or a suitable plastic can serve as the elastic material.
  • the exemplary embodiments shown in the drawing show how the invention can be carried out. Here mean:
  • Fig. 2 shows a partial section of a modified
  • Shut-off valve, enlarged and Fig. 3 shows a further partial section of a shut-off valve, enlarged. 4 shows a section of an atomizing burner, partly in section along the line IV-IV of FIG. 5, FIG. 5 shows a section along the line VV in FIG. 4, FIG. 6 shows a section of a modified atomizing burner, partly in Cut along the line
  • Fig. 7 is a section along the line VII-VII of
  • FIG. 8 a part of a further atomizing burner, partly in section along the line VIII -
  • FIG. 9 shows a section along the line IX-IX of FIG. 8
  • FIG. 10 shows a partial section of an atomizing burner, partly in section along the line X-X of FIG. 11,
  • Fig. 11 is a section along the line XI-XI of Fig. 10 and Fig. 12 to 14 partial sections of atomizing burners.
  • the housing 3 'of a solenoid valve 3 is detachably connected to the preheater 1 by means of a union nut 4.
  • the union nut 4 is supported on a collar 5 of the solenoid valve housing 3 'and holds the solenoid valve housing 3' in a press-tight manner against the preheater 1.
  • the solenoid valve housing 3 ' receives a solenoid coil 6 which extends over approximately half the circumference of the Solenoid valve housing 3 'extending recess 7 can be inserted into the solenoid valve housing 3'.
  • the recess 7 can be closed by a molded part 8.
  • the coil body 9 of the solenoid coil 6 projects beyond the solenoid valve housing 3 'with an extension 10 and carries plug pins 30 which together form an electrical solenoid connection.
  • a protective low voltage can be applied to the plug pins 30.
  • the solenoid valve housing 3 ' receives a' guide sleeve 11 firmly and tightly in the center, into which a magnetic core 12 is tightly immersed and the magnet armature 13 is displaceably accommodated.
  • the magnet armature 13 and the magnet core 12 have concentric central openings 14 and 15 for the passage of the fuel liquid.
  • the central opening 15 is presented with a fuel liquid filter 16 at the end facing the preheater 1.
  • the fuel liquid filter 16 is screwed to a cylindrical extension 17 which is immersed in the preheater 1 at 18.
  • the central opening 14 of the magnet armature 13 is widened at the end facing away from the preheater 1 to form a chamber 19 which serves to accommodate a sealing element 20.
  • the sealing element 20 is designed as a profile body and has a number of through-channels 21 for the fuel liquid in the area of its peripheral surface.
  • the sealing element 20 guided axially displaceably in the chamber 19 and used as an abutment of a return spring 28 for the magnet armature 13.
  • the guide sleeve 11 is provided at the end further away from the preheater 1 with a cup-shaped indentation 22, which has an opening 23 as a valve seat for the passage of fuel liquid.
  • the guide sleeve 11 dips into the space 24 of a cylindrical extension 25 which holds an atomizing nozzle 27 with an internal thread 26. The immersion process takes place to the extent that 24 column spaces remain around the guide sleeve 11 in the region of the nozzle space.
  • the solenoid 6 In the idle state (FIG. 1) of the feed pump, the solenoid 6 is separated from the power source (not shown in more detail) and the magnet armature 13 is placed on the valve seat 22 with its sealing element 20 under the action of the return spring 28. In this position of the magnet armature 13, no fuel liquid can flow to or from the atomizing nozzle 27.
  • the magnet armature 13 When the magnetic coil 6 is energized, the magnet armature 13 is lifted against the action of the return spring 28 with the sealing element 20 from the valve seat 22 and moved into the open position, so that fuel liquid flows through the central openings 15, 14 to the through-channels 21 and via the valve seat 22 Atomizing nozzle 27 can reach.
  • the magnet armature 13 assumes the rest position shown in FIG. 1.
  • a guide sleeve 11 for the magnetic armature 13 is in turn arranged firmly and tightly in the solenoid valve housing 3 '.
  • the magnet armature 13 here also has a chamber 19 adjoining the central opening 14 for receiving the sealing element 20.
  • the sealing element 20 is designed as a step-shaped sealing body, which can be applied to the valve seat 22 with a central part 20 'and with a recessed annular outer part 20' 'having through channels 21 on a flange 29 via a support ring 31 is present.
  • the sealing element designed in this way permits a simplified base formation of the guide sleeve 11 to form a valve seat 22.
  • the sealing element 20 is securely supported on the valve seat 22.
  • the sealing element 20 (right side) is again designed step-like. It has a central part 20 'and an annular outer part 20' 'which is penetrated by through-channels 21.
  • the sealing element 20 is supported with the outer part 20 ′′ on bends 32 of the magnet armature 13 and is thus prevented from falling out.
  • the sealing elements 20 are designed to be axially displaceable in the chamber 19 and form the abutment for the return spring 28.
  • FIG. 4 shows the housing of a receptacle 1, for example a solenoid valve for fuel liquid, for example heating oil.
  • the housing of the receptacle 1 carries an atomizer exercise nozzle 27, which is connected to the housing via a screw thread 40.
  • the receptacle 1 protrudes into a chamber 24 forming a cavity at a distance from the wall 44 and bottom 45, as a result of which the volume of the chamber 24 is reduced.
  • a distributor body 36 is additionally inserted in it, which according to FIGS. 4 and 5 has an essentially cup-shaped design and, e.g. is fixed to the receptacle 1 with an edge part 46.
  • the distributor body 36 has passage channels 37 for the fuel liquid which open into a column space 47.
  • the passage channels 37 are designed in the shape of an arc (FIG.
  • the chamber 24 can be filled with fuel liquid extremely quickly and evenly, and the chamber 24 can be vented quickly.
  • a sealing body 41, 42 is arranged between the end of the atomizing nozzle 27 and the receptacle 1 (FIGS. 12 to 14).
  • the sealing body 41 is covered by a soft seal, for example a suitable elastic plastic, rubber or the like. formed while a sealing body 42 in FIGS. 13 and 14 a circumferential Serves sealing edge, which is assigned a sealing surface 43.
  • the sealing edge 42 is integrally formed on the receptacle 1, while the sealing edge
  • the housing of the receptacle 1 also projects into the chamber 24 of the atomizing nozzle 27 with its end facing the atomizing nozzle 27.
  • an additional distributor body 36 is again used, which is pot-shaped and allows the transfer of the fuel liquid discharged at the outlet channel 23 of the receptacle 1 to the chamber 24 via passage channels 37.
  • the passage channels 37 can be aligned by bending edge portions 48 of the distributor body 36.
  • the distributor body is alternatively formed by a disk 36 'which projects into the chamber 24 of the atomizing nozzle 27 or is assigned to the chamber 24.
  • the disk 36 ' has passage channels 37 for combustion liquid which are designed in the shape of an arc (FIG. 11) and therefore impart a rotary movement to the combustion liquid passing into the chamber 24, which contributes to rapid ventilation.
  • a sealing element can also be arranged in the common separation planes of the atomizing nozzle 27 and the housing of the receptacle 1 in the embodiments of FIGS. 4 to 11.
  • the atomizing nozzle 27 of FIGS. 6 and 7 carries a filter 38 for the fuel liquid.
  • the cavity 39 required for accommodating the filter 38 is minimized by a distributor body 36 which is cup-shaped and has passage channels 37 in the region of bends 49.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)

Abstract

Une vanne d'arrêt électromagnétique destinée à être installée dans des brûleurs à pulvérisation d'huile sous pression est pourvue d'un canal d'écoulement pour le combustible liquide qui s'étend dans le sens de l'axe magnétique. Ladite vanne possède une buse de pulvérisation d'huile du côté de la sortie, un élément d'étanchéité qui peut être soulevé du siège de la vanne par l'induit, à l'encontre de la force d'un ressort, et une borne électrique de la bobine magnétique fixée au corps de la vanne. Pour réduire le volume du combustible liquide qui n'est pas pris dans la buse de pulvérisation (27) et pour garantir une alimentation ininterrompue en air du ventilateur, le corps de la vanne magnétique (3') est relié rigidement aux porte-buses ou à un dispositif de préchauffage (1) destiné au combustible liquide, de façon qu'elle puisse être déplacée en rotation ou qu'elle soit libre en rotation dans un alignement prédéterminé avec la borne électrique de la bobine magnétique. Le diamètre extérieur de la vanne est approximativement égal au diamètre du porte-buse ou au diamètre du dispositif de préchauffage (1). La vanne est pourvue d'une bobine magnétique (6) conçue pour avoir une basse tension de protection.
PCT/EP1991/001128 1991-04-18 1991-06-19 Vanne d'arret electromagnetique WO1992018810A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4112627.0 1991-04-18
DE4112627A DE4112627C2 (de) 1990-08-23 1991-04-18 Elektromagnetisches Absperrventil für den Düsenhalter eines Öldruckzerstäubungsbrenners
DEP4115775.3 1991-05-15
DE19914115775 DE4115775A1 (de) 1991-05-15 1991-05-15 Zerstaeubungsbrenner

Publications (1)

Publication Number Publication Date
WO1992018810A1 true WO1992018810A1 (fr) 1992-10-29

Family

ID=25902933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/001128 WO1992018810A1 (fr) 1991-04-18 1991-06-19 Vanne d'arret electromagnetique

Country Status (1)

Country Link
WO (1) WO1992018810A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT271693B (de) * 1966-09-17 1969-06-10 Joannes S P A Vorrichtung zum Öffnen und Schließen der Brennstoffzufuhr zur Zerstäuberdüse eines Ölbrenners
DE2438957B2 (fr) * 1974-08-14 1979-07-26 Danfoss A/S, Nordborg (Daenemark)
DE3434840A1 (de) * 1984-09-22 1986-04-03 Haiko 2084 Rellingen Künzel Oelbrenner fuer heizungsanlagen
EP0352444A1 (fr) * 1988-07-23 1990-01-31 Robert Bosch Gmbh Soupape électromagnétique et procédé de fabrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT271693B (de) * 1966-09-17 1969-06-10 Joannes S P A Vorrichtung zum Öffnen und Schließen der Brennstoffzufuhr zur Zerstäuberdüse eines Ölbrenners
DE2438957B2 (fr) * 1974-08-14 1979-07-26 Danfoss A/S, Nordborg (Daenemark)
DE3434840A1 (de) * 1984-09-22 1986-04-03 Haiko 2084 Rellingen Künzel Oelbrenner fuer heizungsanlagen
EP0352444A1 (fr) * 1988-07-23 1990-01-31 Robert Bosch Gmbh Soupape électromagnétique et procédé de fabrication

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