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WO1998001689A1 - Dispositif anti-retour pour systeme de lavage des parebrises des vehicules automobiles - Google Patents

Dispositif anti-retour pour systeme de lavage des parebrises des vehicules automobiles Download PDF

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Publication number
WO1998001689A1
WO1998001689A1 PCT/ES1997/000149 ES9700149W WO9801689A1 WO 1998001689 A1 WO1998001689 A1 WO 1998001689A1 ES 9700149 W ES9700149 W ES 9700149W WO 9801689 A1 WO9801689 A1 WO 9801689A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning liquid
outlet
inlet
elastic
return device
Prior art date
Application number
PCT/ES1997/000149
Other languages
English (en)
Spanish (es)
Inventor
Miguel Mota Lopez
Juan Jesús ELVIRA PERALTA
Original Assignee
Fico Transpar, S.A.
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 Fico Transpar, S.A. filed Critical Fico Transpar, S.A.
Priority to AU30339/97A priority Critical patent/AU3033997A/en
Publication of WO1998001689A1 publication Critical patent/WO1998001689A1/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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor

Definitions

  • the object of the invention is a non-return device for windshield washer installations of motor vehicles.
  • motor vehicles originally incorporate means intended for cleaning their glazed surfaces, particularly the windshield, the rear glass and headlamps, said means comprising a reservoir of cleaning fluid, a connected suction-impulse pump. to the electrical network of the vehicle and pipes that connect the suction-drive pump with pumps that project the cleaning liquid under the flow and pressure conditions required against said surfaces.
  • the suction-impulse electric pump essentially comprises a cylindrical envelope in which there is axially arranged an electromotor and a suction-impulse pump composed of a drive chamber in which an aspiration-drive turbine is arranged; the intake of liquid aspirated into the discharge chamber is carried out by means of an axial tubular suction extension, while the output of driven liquid is carried out by means of an outlet nozzle tangentially arranged with respect to the discharge chamber and to which connect the distribution lines of cleaning liquid.
  • the drive of the suction-drive pump causes the aspiration of cleaning liquid from the tank and its impulsion through the outlet nozzle where through the ducts it reaches the suppliers; Under these conditions, the projection of cleaning liquid on the glazed surfaces occurs after a certain time after the electric pump has been activated, that is to say, in order for the cleaning liquid to reach the dispensers, it is necessary to pre-fill the ducts by the pump itself suction-drive.
  • non-return valves are used whose purpose is to prevent the emptying of the ducts once the operation of the suction-discharge pump ceases.
  • the use of ball valves constituted, in general lines, by a cylindrical valve body in which there is a spring that permanently works in compression, supporting one of its ends against the body of the body, is widely extended. valve, and its other end against a closing ball that rests on a closing seat.
  • the non-return valve or valves required by each specific case of application are inserted in the ducts that carry the cleaning liquid driven by the suction-discharge pump to the sutors, and are arranged at those points of the ducts that adapt to the needs of assembly in origin, functional and maintenance.
  • the operation of the non-return valve described above is based on the pressure at that the cleaning liquid is driven by the suction-drive pump.
  • the driven cleaning liquid presses on the closing ball of the non-return valve and overcoming the opposition of the spring, which is subjected to greater compression, allows the passage through the liquid valve cleaner, and when the actuation of the suction-drive pump ceases, the elastic reaction of the spring places the closing ball by pressing on the closing seat and preventing the passage of cleaning liquid towards the tank, so as to prevent the emptying of the ducts
  • the non-return ball valves and their operation described above generally have the following drawbacks: a) the suction-discharge pump must drive the cleaning liquid at a pressure such that it provides a flow of liquid at the pressure required for the cleaning of the glazed surface, while at a sufficient pressure to achieve the opening of the non-return valve, all of which is decisive, increasing it, of the dimensioning of the assembly formed by the electric motor and the suction-impulse pump; and b) the ball occupies part of the liquid circulation duct so that it reduces the amount of liquid outlet in relation to the theoretical capacity of the rest of the elements of the installation.
  • the non-return device object of the invention is characterized by comprising two tubular, inlet and outlet bodies respectively, coaxially arranged and an elastic non-return valve disposed therein, having the respective inlet and outlet bodies and complementary means of mutual bonding and for fixing the non-return elastic valve and respective means for its coupling to a corresponding cleaning liquid conduit, and in which: - the inlet body has a longitudinal through hole in which two cylindrical portions of different diameter are distinguished, a previous one which is the inlet of cleaning liquid and a rear of larger diameter adapted to receive it housing the outlet body by one of its ends,
  • the outlet body has a longitudinal hole in which the elastic check valve is arranged
  • the elastic non-return valve which being single and having a generally hollow cylindrical shape open at both ends comprises an annular fixing shoulder and an axial extension of closure which, at rest, that is without external action, has its end by elastic reaction free closed, is adapted so that, the discharge of cleaning liquid in the direction of the inlet to the outlet body causes the elastic deformation of the axial extension of the valve opening by opening it and allowing the passage through the cleaning liquid, and when said supply of cleaning liquid ceases the elastic reaction of the axial closing extension, as well as the pressure that the cleaning liquid contained in the conduit upstream of the outlet body exerts on the axial closing extension given by the level difference hydraulic, it closes it preventing the passage of cleaning liquid in the direction given from the outlet body to the body of entry, that is preventing the emptying of said conduction.
  • the mutual link means of the inlet and outlet bodies comprise, in the inlet body and in the rear portion of the through hole two perimetral link slots, and in the body of two outwardly perimeter link projections adapted to be housed with adjustment in said link slots.
  • the fixing means of the non-return valve comprise, in the inlet body a seat configured by the link of both front and rear portions of the through hole, and in the outlet body and in its end housed in the inlet body is an annular front projection, all of which is adapted so that, once the inlet and outlet bodies are connected, the annular projection of fixing of the non-return elastic valve is subjected to compression between said step and front protrusion with its axial closing extension arranged in the through hole of the outlet body.
  • the coupling means of the inlet body with a cleaning liquid conduit comprise a tubular axial extension that hydraulically links tangentially with the discharge chamber of a suction-impulse pump.
  • the coupling means of the outlet body with a cleaning liquid conduit comprise a tubular axial extension in which there is an annular shoulder forming an outlet nozzle.
  • the coupling means of the inlet body with a cleaning liquid conduit comprise a tubular axial extension in which there is an annular shoulder forming an inlet nozzle.
  • the characteristics of the non-return device according to the invention allow it to be arranged in the structure of the suction-impulse pump of the windshield washer installation, which provides a solution to the problems arising from the interleaving of valves anti-return in the cleaning fluid lines; since such an arrangement avoids the costs derived from the assembly of non-return valves in the pipes as well as leaks of cleaning liquid at the mounting points of these valves.
  • the nature and structure of the elastic non-return valve provided in the device according to the invention allows its opening practically at the pressure of the cleaning liquid that requires the cleaning of the glazed surfaces, unlike the ball valves which, as before He said, they require an overpressure of discharge of cleaning liquid to overcome the elastic reaction of the spring to proceed to its opening; in this way, the benefits of the elastic non-return valve allow the availability of electric pumps whose dimensioning is practically a function of the flow and pressure requirements required for the cleaning of the glazed surfaces, and in any case lower than the precise dimensioning when ball check valves are used; and, on the other hand, said structure of the elastic non-return valve allows the passage of cleaning fluid through a passage section that practically corresponds to that of the pipes to which it is coupled, thus maintaining in the windshield washer installation a uniformity in terms of circulation capacity of cleaning liquid.
  • the non-return device according to the invention better behaves in its closed position the greater the pressure exerted by the retained liquid column, which is an important advantage over known devices that employ a closing ball, which need a spring of greater force the higher the pressure of the retained liquid column, aggravating the problem explained above regarding the opening overpressure required for the opening of such devices.
  • the non-return device according to the invention can be applied in windshield washer fluid lines whose suction-drive electric pump incorporates said non-return device or not.
  • Figure 1 is a longitudinal sectional view of the non-return device according to the invention with the elastic non-return valve in the rest or closing position
  • Figure 2 is a longitudinal sectional view of the non-return device according to the invention with the elastic non-return valve open, that is to say liquid passage,
  • Figure 3 is a longitudinal sectional view of the non-return device according to the invention in which the outlet body comprises a nozzle
  • Figure 4 is a partially sectional view showing the non-return device according to the invention incorporated in a suction-impulse pump, and
  • Figure 5 is a longitudinal sectional view of the non-return device according to the invention in which its inlet and outlet bodies comprise a respective nozzle.
  • the non-return device described as an embodiment comprises an inlet body 1 and an outlet body 2, both tubular and preferably obtained from the plastic material injection, and an elastic non-return valve 3.
  • the inlet body 1 has a through longitudinal hole 4 in which two coaxially arranged different diameter portions are distinguished, an anterior 5 and a posterior 6 respectively, the posterior portion 6 being the largest in diameter and both portions being 5, 6 linked by a step that is ortho- nality with respect thereto by defining a seat 7.
  • the outlet body 2 has a longitudinal through hole 8 in which, in this embodiment, two portions of different diameter coaxially arranged are distinguished, an anterior 9 and a posterior 10 respectively, the anterior portion 9 being the largest in diameter and both portions 9, 10 being linked by a step 11 forming a certain angularity.
  • the anterior 5 and posterior portions 10 of the inlet 1 and outlet 2 bodies respectively have the same cross section.
  • Both input 1 and output 2 bodies are mutually linkable by means of the following elements.
  • a first perimeter link groove 12 arranged at a relatively short distance from the seat 7 and a second perimeter link groove 13 adjacent to the previous one.
  • the previous one 14 which corresponds to the anterior portion 9 of the through hole 8
  • the elastic check valve 3 comprises a annular projection 17 and an axial extension of tubular closure 18 that configures with respect to its theoretical main longitudinal plane, which is the one corresponding to the longitudinal section of the non-return elastic valve 3 shown in Figure 1, two laterally linked walls 19 that originate in the annular shoulder 17 converges defining a closing mouth 20.
  • the elastic non-return valve 3 is arranged so that, once the inlet and outlet bodies 2 are connected, their axial extension of closure 18 is located in the anterior portion
  • FIG 3 shows another embodiment of the non-return device described above and shown in Figures 1 and 2 and in which the outlet body 2 comprises an axial tubular extension 22 at whose free end 23 there is an annular shoulder 24 configuring a nozzle of outlet 25 to which a flexible tubular conduit not shown is pluggable;
  • this embodiment of a non-return device allows its application to a plurality of elements commonly used in windshield washer installations, for example, the inlet body 1 may constitute the outlet branch of a "T" or "bypass" And "not represented.
  • Figure 4 shows another embodiment of the non-return device according to the invention in which the inlet body 1 configures a tubular extension 26 that hydraulically links with the impulse chamber 27 of a suction-impulse pump 28 partially represented, while that the outlet body 2 comprises a nozzle 25 equal to that of the embodiment of the non-return device shown in Figure 3.
  • Figure 5 shows another embodiment of the non-return device according to the invention in which the inlet body 1 has a tubular axial extension 29 in which at its free end 30 there is an annular shoulder 31 configuring an inlet nozzle 32 to which a flexible tubular conduit not shown is pluggable, while the outlet body 2 comprises a nozzle 25 equal to that of the embodiments shown in Figures 3 and.
  • the operation of the non-return device does not differ essentially from that explained above.
  • said conduit contains the cleaning liquid from the previous operation of the electric pump 28.
  • the operation of the electric pump 28 causes the impulse of the cleaning liquid and overcoming the elastic reaction of the axial closing extension 18 of the elastic non-return valve 3, as well as the pressure exerted on the axial closing extension 18 by the cleaning liquid contained in said conduction, It causes the opening of the non-return elastic valve 3 and the passage of cleaning liquid therethrough, so that simultaneously the projection of the cleaning liquid contained in said conduction takes place, as well as that propelled by the electro-pump 28 on the glazed surfaces .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Nozzles (AREA)
  • Window Of Vehicle (AREA)

Abstract

Ce dispositif anti-retour comprend un corps tubulaire d'entrée (1), un corps tubulaire de sortie (2) et une soupape élastique anti-retour (3), ces éléments étant disposés coaxialement et enlacés mutuellement. Les deux corps (1, 2) possèdent des moyens d'accouplement à un conduit de liquide nettoyant. Au repos, la soupape (3) est fermée par réaction élastique; l'impulsion de liquide nettoyant dans le sens du corps d'entrée (1) vers le corps de sortie (2) produit la déformation élastique de la soupape (3) et son ouverture; lorsque cesse l'impulsion de liquide nettoyant, la réaction élastique de la soupape (3) ainsi que la pression de liquide nettoyant contenu dans la ou les conduites en amont de la soupape (3), contribuent à fermer ladite soupape et empêchent que les conduites ne se vident par gravité.
PCT/ES1997/000149 1996-07-09 1997-06-11 Dispositif anti-retour pour systeme de lavage des parebrises des vehicules automobiles WO1998001689A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30339/97A AU3033997A (en) 1996-07-09 1997-06-11 Anti-return device for motor vehicle windshield washing systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP9601528 1996-07-09
ES009601528A ES2130947B1 (es) 1996-07-09 1996-07-09 Dispositivo antirretorno para instalaciones lavaparabrisas de vehiculos automoviles.

Publications (1)

Publication Number Publication Date
WO1998001689A1 true WO1998001689A1 (fr) 1998-01-15

Family

ID=8295429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1997/000149 WO1998001689A1 (fr) 1996-07-09 1997-06-11 Dispositif anti-retour pour systeme de lavage des parebrises des vehicules automobiles

Country Status (3)

Country Link
AU (1) AU3033997A (fr)
ES (1) ES2130947B1 (fr)
WO (1) WO1998001689A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056583A1 (fr) * 1999-03-23 2000-09-28 Robert Bosch Gmbh Buse de pulverisation pour un systeme de lavage de vitres
WO2000077429A1 (fr) * 1999-06-15 2000-12-21 Ip.One Pty. Ltd. Clapet de non retour
AU775326B2 (en) * 1999-06-15 2004-07-29 Global Valve Technology Pty Limited A non-return valve
US7201363B2 (en) 2002-01-30 2007-04-10 Global Valve Technology Pty Ltd. Valve
CN102392906A (zh) * 2011-11-17 2012-03-28 黄山市必利精密塑业科技有限公司 一种单向阀
CN101555960B (zh) * 2009-05-21 2013-07-10 胡东白 均衡流量的节水阀
CN106402555A (zh) * 2016-11-10 2017-02-15 宋少华 一种高强度缓流pvc弯头管件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730217A (en) * 1971-05-19 1973-05-01 Gen Motors Corp Check valve
ES237648U (es) * 1978-08-04 1978-10-16 Transpar Iberica, S. A. Valvula para trasiego de liquidos.
ES244882U (es) * 1979-07-30 1979-11-16 Transpar Iberica,S.A. Bomba electrica para lavaparabrisas
US4405316A (en) * 1978-04-03 1983-09-20 Baxter Travenol Laboratories, Inc. Injection site with check valve inlet
US5592966A (en) * 1995-03-10 1997-01-14 Alan J. Gates Back-flow preventer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730217A (en) * 1971-05-19 1973-05-01 Gen Motors Corp Check valve
US4405316A (en) * 1978-04-03 1983-09-20 Baxter Travenol Laboratories, Inc. Injection site with check valve inlet
ES237648U (es) * 1978-08-04 1978-10-16 Transpar Iberica, S. A. Valvula para trasiego de liquidos.
ES244882U (es) * 1979-07-30 1979-11-16 Transpar Iberica,S.A. Bomba electrica para lavaparabrisas
US5592966A (en) * 1995-03-10 1997-01-14 Alan J. Gates Back-flow preventer

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056583A1 (fr) * 1999-03-23 2000-09-28 Robert Bosch Gmbh Buse de pulverisation pour un systeme de lavage de vitres
US6460780B1 (en) 1999-03-23 2002-10-08 Robert Bosch Gmbh Spray nozzle for a windscreen washing system
KR100696088B1 (ko) * 1999-03-23 2007-03-20 로베르트 보쉬 게엠베하 윈드스크린 세척 장치용 분사 노즐
WO2000077429A1 (fr) * 1999-06-15 2000-12-21 Ip.One Pty. Ltd. Clapet de non retour
EP1210536A4 (fr) * 1999-06-15 2002-08-28 Ip One Pty Ltd Clapet de non retour
AU775326B2 (en) * 1999-06-15 2004-07-29 Global Valve Technology Pty Limited A non-return valve
US6824117B2 (en) 1999-06-15 2004-11-30 Ip. One Pty Ltd. Non-return valve
US7028981B2 (en) 1999-06-15 2006-04-18 Ip.One Pty Ltd Non-return valve
US7201363B2 (en) 2002-01-30 2007-04-10 Global Valve Technology Pty Ltd. Valve
CN101555960B (zh) * 2009-05-21 2013-07-10 胡东白 均衡流量的节水阀
CN102392906A (zh) * 2011-11-17 2012-03-28 黄山市必利精密塑业科技有限公司 一种单向阀
CN106402555A (zh) * 2016-11-10 2017-02-15 宋少华 一种高强度缓流pvc弯头管件

Also Published As

Publication number Publication date
ES2130947B1 (es) 2000-03-01
AU3033997A (en) 1998-02-02
ES2130947A1 (es) 1999-07-01

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