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EP2952810B1 - Armature destinee a filtrer du carburant liquide - Google Patents

Armature destinee a filtrer du carburant liquide Download PDF

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Publication number
EP2952810B1
EP2952810B1 EP15167239.1A EP15167239A EP2952810B1 EP 2952810 B1 EP2952810 B1 EP 2952810B1 EP 15167239 A EP15167239 A EP 15167239A EP 2952810 B1 EP2952810 B1 EP 2952810B1
Authority
EP
European Patent Office
Prior art keywords
flow
nipple
fuel
volume flow
partial volume
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP15167239.1A
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German (de)
English (en)
Other versions
EP2952810A1 (fr
Inventor
Bernhard Tigges
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oventrop GmbH and Co KG
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Oventrop GmbH and Co KG
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Publication of EP2952810A1 publication Critical patent/EP2952810A1/fr
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Publication of EP2952810B1 publication Critical patent/EP2952810B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/18—Cleaning or purging devices, e.g. filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/147—Valves

Definitions

  • the invention relates to a connection fitting for filtering liquid fuel, in particular fuel oil, with a fitting housing having a first nozzle for connecting a supply line of a fuel tank, a second nozzle for connecting a flow line to a fuel consuming or further processing burner, a third nozzle for Connecting a return line from the burner, and having a filter chamber with a filter cartridge for the fuel, wherein the valve body has a first flow channel connecting the first port to the second port via the filter chamber and the filter cartridge.
  • connection fittings are known in the art. They are installed between a fuel tank and a burner. It is achieved by the appropriate design, a return of the unconsumed fuel to the burner. Typical are such connection fittings with an additional venting device or with an automatic breather arrangement.
  • the fuel oil not consumed by the burner is fed back via the return line and a spring-loaded overflow valve of the supply line to the burner pump, namely in the flow direction behind the filter insert.
  • the overpressure generated by the burner pump in the return has the function to flush out air via a manually operable valve, so that the line, filter and burner pump are vented and filled only with fuel.
  • Embodiments are also known in which, for small burner powers, the return fuel is fed in front of the filter insert, so that the fuel is filtered several times.
  • the flow channel formed by the capillary tube is associated with a spring-loaded overflow valve in parallel, which also supplies larger return quantities to the burner inlet behind the filter insert.
  • a safety function achieved by such a construction concerns the possibility of hose breakage of the return line. Due to the permanently open flow channel in the capillary tube and nozzle, air is drawn into the system during the demolition of the return hose during the fuel supply in the suction mode and the system shuts off due to fuel shortage. Brenner goes on error. This prevents further leakage of fuel from the demolished return line.
  • a corresponding valve in which a non-pressurized return is provided.
  • the spring of a relief valve In normal operation, the spring of a relief valve is relaxed. All of the fuel coming back from the burner is returned directly to the supply line and the burner pump.
  • An assembly consisting of overflow and Vent valve, tensioned only when they are actuated, the spring of the overflow valve, wherein a valve stem cooperates with a valve seat in the filter housing. The pressure thus generated in the return line allows both air / fuel can escape from the released vent hole of the assembly, as well as fuel through the spill valve is still supplied to the flow line to the burner. Multiple filtering does not take place here.
  • a switching device according to the preamble of the first claim is provided. This can be switched from a first mode in which returns fuel through the vent and the spill valve directly to the burner feed, in a second mode, in which a multiple filtering takes place, the return fuel passes through breather and overflow before the filter insert to the burner.
  • the function "multiple filtering" should be set up to a burner consumption of 20 liters per hour (corresponding to a burner output of up to approx. 200 kW), but this is only possible manually. For larger flows, it is necessary to switch manually to the first operating mode, that is, the one-time filtering. The flow resistance of the filter insert would be too large for multiple filtration because of the large flow.
  • the present invention seeks to provide a corresponding connection fitting available in which a multiple filtering, especially at low fuel flow without manual switching to small and large burner power can be realized.
  • the invention proposes that the third nozzle communicates with a flow distributor via which the fuel returned via the third nozzle is supplied to the inlet of the filter insert in a first partial volume flow, and in a second partial volume flow to the outlet of the filter insert to the second nozzle is supplied.
  • the flow distributor has or forms a flow resistance in the flow path of the second partial volume flow, by means of which the size of the volume flow is determined.
  • the flow distributor in the flow path of the first partial volume flow has a fixed set or variably adjustable cross-sectional constriction.
  • the first partial volume flow is guided through a first flow channel, which has a fixed or variable cross-sectional constriction, so that in the burner supply lower pressure prevails than in the return, wherein the first flow channel is formed quasi as a bypass to the second flow channel.
  • the second partial flow is guided through a second flow channel, which has a flow resistance, whereby it is achieved that, when a sufficiently high pressure is created by an increased fuel volume flow in the return channel or by a larger burner output opens.
  • the flow paths of the flow distributor are formed by flow channels.
  • the cross-sectional constriction is formed by at least one nozzle, an annular gap or a diaphragm.
  • a spring-loaded overflow valve is arranged as a flow resistance in the flow path of the second partial volume flow.
  • the spring-loaded overflow valve ensures that, if a sufficiently high pressure by an increased fuel flow in the return channel or due to a larger burner output, the valve opens. Otherwise it is closed by spring force.
  • the flow volume guided via the first flow channel is repeatedly filtered several times in normal burner operation.
  • a manual switch is not required here.
  • the flow resistance or an overflow valve serving as a flow resistance opens in the flow path of the second partial volume flow or releases the flow path as soon as a sufficiently high pressure is produced by an increased fuel volume flow in the burner return connected to the third connection.
  • a further embodiment is that branches off from the flow path of the first partial volume flow a vent pipe into which a manually or by means of actuatable valve is used, which blocks the output of the vent in a first end position and opens in a second end position and the first partial flow, the consists of air or air / fuel mixture through the vent to the outside eg dissipates into the atmosphere.
  • a manual or by means of tool actuable ventilation option is available provided, wherein in the first end position of the normal operation is made possible and in the second end position of the first partial volume flow, which consists of air or an air / fuel mixture is discharged through the vent unit into the environment.
  • valve is adjustable in an intermediate position between the first and second end position, wherein in the intermediate position of the first partial volume flow is shut off and the entire volume flow forms the second part volume flow.
  • the entire return fuel is passed through the second flow channel and filtered only the newly sucked from a fuel oil tank fuel.
  • An alternative preferred embodiment is seen in that in the flow path between the third nozzle and the flow distributor, an automatic ventilation device is installed.
  • the third connection communicates openly with the inlet of the ventilation device via a flow path and the ventilation device is connected via a channel to the flow distributor, in which channel a spring-loaded overflow valve is inserted.
  • an automatic venting is achieved, as is known per se in the prior art.
  • the first partial volume flow is guided through a first flow channel, which has a fixed or variable cross-sectional constriction, for example a nozzle or an annular gap, so that a lower pressure prevails in the burner inlet than in Return, wherein the first flow channel is formed as a bypass to the second flow channel.
  • a first flow channel which has a fixed or variable cross-sectional constriction, for example a nozzle or an annular gap, so that a lower pressure prevails in the burner inlet than in Return, wherein the first flow channel is formed as a bypass to the second flow channel.
  • the second partial volume flow is passed through a second flow channel, which has as a flow resistance, for example, a spring-loaded overflow valve, which, as soon as a sufficiently high pressure arises through an increased fuel volume flow in the return channel opens.
  • a flow resistance for example, a spring-loaded overflow valve
  • vent unit the normal operation in the valve housing in one end position and in the other end position, the first partial volume flow, which consists of air or an air / fuel mixture, dissipates through the vent unit into the environment.
  • the first flow channel In a middle position of the breather valve of the manually operated vent unit, the first flow channel is closed and the entire return fuel is passed through the second flow channel. Only the fuel sucked from the fuel tank is filtered.
  • a connection fitting for filtering liquid fuel is shown. It consists essentially of a fitting housing 1, which has a first connecting piece 2 for connecting a flow line of a fuel tank, a second nozzle 3 for connecting a flow line to a burner and a third nozzle 4 for connecting a return line from the burner. Furthermore, a filter chamber 5 is provided with a filter insert 6 for the fuel.
  • the valve body has a first flow channel which connects the first nozzle 2 with the second nozzle 3. This connection is indicated by corresponding arrows in the drawing. The connection takes place via the filter chamber 5 and the filter insert 6. The inflowing fuel is thus filtered and then fed via the second port 3 to the burner.
  • the third port 4 communicates with a flow distributor 7, via which the recirculated via the third port 4 fuel in a first Partial volume flow 8 is supplied to the input of the filter cartridge 6, so that this component of the recirculated fuel is filtered again, and is supplied via the in a second partial volume flow 9 of the recirculated fuel to the output of the filter cartridge 6 to the second port 3.
  • the flow distributor 7 has in the flow path of the second partial volume flow 9 to a flow resistance explained later or forms such, by means of which the size of the volume flow is determined. Furthermore, the flow distributor 7 in the flow path of the first partial volume flow 8 to a fixed or variably adjustable cross-sectional constriction 10.
  • All flow paths of the flow distributor 7 are formed by corresponding flow channels.
  • the cross-sectional constriction 10 is formed by a nozzle, an annular gap or a diaphragm.
  • a spring-loaded overflow valve 11 As a flow resistance in the flow path of the second partial volume flow 9, a spring-loaded overflow valve 11 is arranged.
  • the flow resistance or serving as a flow resistance overflow valve 11 in the flow path of the second partial volume flow 9 opens or releases this flow path, as soon as a sufficiently high pressure through a increased fuel flow in connected to the third port 4 burner return arises.
  • a vent pipe 12 in which a manually or by means of a tool operable valve 13 is inserted.
  • This valve 13 locks in a first end position, which in FIG. 1 is shown, the output of the vent neck 12.
  • the valve 13 opens the way to the vent pipe 12, so that the first partial volume flow, which consists of air or air / fuel mixture, is discharged through the vent pipe 12 to the outside to the atmosphere.
  • the valve 13 is also adjustable in an intermediate position, which in FIG. 2 is shown, with this intermediate layer is between the first and second end position. In this intermediate position, the first partial volume flow 8 is shut off, so that the entire volume flow forms the second partial volume flow 9. The opening to the atmosphere is still closed.
  • an automatic air vent is provided.
  • an automatic ventilation device 14 is installed in the flow path between the third port 4 and the flow distributor 7.
  • the third port 4 is open via a flow path 15 with the inlet of the ventilation device 14 connected.
  • the venting device 14 is in turn connected via a channel 16 to the flow distributor 7.
  • an overflow valve 17 In the channel 16 is an overflow valve 17, which may be spring loaded, for example, arranged.
  • floats 18, 19 are arranged, as well as chamber walls with ventilation openings 20, 21.
  • a backflow preventer 22 is installed in the first connecting piece 1, for example in the form of a valve body.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (11)

  1. Raccord de filtrage de liquide combustible, en particulier fioul, comprenant un boîtier de raccord (1) comportant un premier embout (2) pour raccorder une conduite d'amenée à partir d'un réservoir de combustible, un deuxième embout (3) pour raccorder une conduite d'amenée à un brûleur consommant ou conditionnant le combustible, un troisième embout (4) pour raccorder une conduite de retour à partir du brûleur, et une chambre de filtrage (5) avec une cartouche filtrante (6) pour le combustible, le boîtier de raccord (1) comportant un premier canal d'écoulement qui lie le premier embout (2) au deuxième embout (3) par l'intermédiaire de la chambre de filtrage (5) et la cartouche filtrante (6), caractérisé en ce que le troisième embout (4) communique avec un diffuseur de flux (7), au moyen duquel le combustible recirculant à travers le troisième embout (4) est alimenté, dans un premier débit volumique partiel (8), à l'entrée de la cartouche filtrante (6), et est alimenté, dans un deuxième débit volumique partiel (9), à la sortie de la cartouche filtrante (6) vers le deuxième embout (3).
  2. Raccord selon la revendication 1, caractérisé en ce que le diffuseur de flux (7) comporte ou forme, dans le chemin d'écoulement du deuxième débit volumique partiel (9), une résistance à l'écoulement, au moyen de laquelle la valeur du débit volumique est déterminée.
  3. Raccord selon une des revendications 1 ou 2, caractérisé en ce que le diffuseur de flux (7) dans le chemin d'écoulement du premier débit volumique partiel (8) comporte un rétrécissement de section (10) fixe ou variablement réglable.
  4. Raccord selon une des revendications 1 à 3, caractérisé en ce que les chemins d'écoulement du diffuseur de flux (7) sont réalisés par des canaux d'écoulement.
  5. Raccord selon une des revendications 3 ou 4, caractérisé en ce que le rétrécissement de section (10) est réalisé par au moins une buse, un espace annulaire libre, ou un diaphragme.
  6. Raccord selon une des revendications 2 à 5, caractérisé en ce que comme résistance à l'écoulement, un déverseur à ressort (11) est disposé dans le chemin d'écoulement du deuxième débit volumique partiel (9).
  7. Raccord selon une des revendications 2 à 6, caractérisé en ce que la résistance à l'écoulement ou un déverseur (11) servant de résistance à l'écoulement dans le chemin d'écoulement du deuxième débit volumique partiel (9) ouvre ou dégage le chemin d'écoulement, dès qu'une pression suffisamment haute existe par un débit volumique du combustible dans la conduite de retour du brûleur raccordée au troisième embout (4).
  8. Raccord selon une des revendications 1 à 7, caractérisé en ce qu'à partir du chemin d'écoulement du premier débit volumique partiel (8) débouche un embout d'évent (12), dans lequel une vanne (13) à être opérée à main ou au moyen d'un outil est insérée, qui dans une première position d'extrémité bloque la sortie de l'embout d'évent (12) et dans une deuxième position d'extrémité ouvre et extrait le premier débit volumique partiel (8) consistant en air ou en un mélange d'air/combustible, vers l'extérieur à travers l'embout d'évent (12), p.ex. dans l'atmosphère.
  9. Raccord selon la revendication 8, caractérisé en ce que la vanne (13) est réglable à une position intermédiaire entre la première et la deuxième position d'extrémité, dans la position intermédiaire le premier débit volumique partiel (8) étant bloqué, et le débit volumique total formant le deuxième débit volumique partiel (9).
  10. Raccord selon une des revendications 1 à 7, caractérisé en ce que dans le chemin d'écoulement entre le troisième embout (4) et le diffuseur de flux (7), un dispositif d'évent automatique (14) est installé.
  11. Raccord selon la revendication 10, caractérisé en ce que par l'intermédiaire d'un chemin d'écoulement (15), le troisième embout (4) est en communication ouverte avec l'entrée du dispositif d'évent (14), et le dispositif d'évent (14) est raccordé par l'intermédiaire d'un canal (16) avec le diffuseur de flux (7), dans ce canal (16) un déverseur (17) étant prévu.
EP15167239.1A 2014-06-03 2015-05-12 Armature destinee a filtrer du carburant liquide Active EP2952810B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014107760.1A DE102014107760A1 (de) 2014-06-03 2014-06-03 Anschlussarmatur zum Filtern von flüssigen Medien

Publications (2)

Publication Number Publication Date
EP2952810A1 EP2952810A1 (fr) 2015-12-09
EP2952810B1 true EP2952810B1 (fr) 2016-11-23

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Application Number Title Priority Date Filing Date
EP15167239.1A Active EP2952810B1 (fr) 2014-06-03 2015-05-12 Armature destinee a filtrer du carburant liquide

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EP (1) EP2952810B1 (fr)
DE (1) DE102014107760A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108488014A (zh) * 2018-03-09 2018-09-04 安徽江淮汽车集团股份有限公司 一种燃油温度调节系统
DE102020211029B4 (de) 2020-09-02 2024-12-12 AFRISO-EURO-INDEX Gesellschaft mit beschränkter Haftung Filtervorrichtung zum Filtern von Heizöl mit einer Entleereinrichtung
DE102020211027B3 (de) 2020-09-02 2022-01-20 AFRISO-EURO-INDEX Gesellschaft mit beschränkter Haftung Filtervorrichtung zum Filtern von Heizöl mit überlaufgeschützter Filtertasse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917459U (de) * 1965-04-08 1965-06-10 Kurt Hastenteufel Leitungsanordnung fuer heizanlagen mit oelfeuerung.
DE4238044C1 (de) 1992-11-11 1993-12-16 Josef Dipl Ing Gottfried Heizöl-Einstrangfilter mit automatischer Entlüftungseinrichtung
US5887572A (en) * 1997-05-05 1999-03-30 Ford Global Technologies, Inc. Pressure and temperature control for fuel delivery systems
DE102005006878B4 (de) 2005-02-14 2012-02-09 F.W. Oventrop Gmbh & Co. Kg Anschlussarmatur mit Heizölfilter
FR2960597B1 (fr) * 2010-05-25 2012-06-22 Snecma Dispositif a conduit de derivation dans un circuit de fluide
EP2446951B1 (fr) 2010-10-26 2012-10-10 AFRISO-EURO-INDEX GmbH Dispositif de filtration et d'aération de fioul de chauffage à l'aide d'une soupape d'inversion du refoulement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP2952810A1 (fr) 2015-12-09
DE102014107760A1 (de) 2015-12-03

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