EP3885051A1 - Buse de commutation automatique - Google Patents

Buse de commutation automatique Download PDF

Info

Publication number
EP3885051A1
EP3885051A1 EP21162264.2A EP21162264A EP3885051A1 EP 3885051 A1 EP3885051 A1 EP 3885051A1 EP 21162264 A EP21162264 A EP 21162264A EP 3885051 A1 EP3885051 A1 EP 3885051A1
Authority
EP
European Patent Office
Prior art keywords
piston
nozzle
chamber
opening
fluid
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.)
Withdrawn
Application number
EP21162264.2A
Other languages
German (de)
English (en)
Inventor
Yolanda TOMÁS PUCHADES
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.)
Istobal SA
Original Assignee
Istobal SA
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 Istobal SA filed Critical Istobal SA
Publication of EP3885051A1 publication Critical patent/EP3885051A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B05B1/1663—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative translatory movement of the valve elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/005—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0068—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including a plurality of individual elements, e.g. needles, baffles, rotatable blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Definitions

  • the object of the present invention consists of a nozzle to be incorporated into vehicle washing lances intended to project fluids both at low pressure or foam and at high pressure so that a single washing lance is used which, with the automatic switching of the nozzle, enables one outlet to be isolated from the other reducing the necessary equipment in the installation.
  • a washing phase is first carried out with high-density foam that adheres to the surface of the vehicle to weaken the most encrusted dirt and subsequently a targeted washing is carried out by spraying the high pressure fluid.
  • the first lance incorporates a nozzle that contains a large diameter opening that creates a fan with a greater angle to project foam on a larger surface of the vehicle, while the second lance incorporates a nozzle with a small-sized opening that enables the spraying of the fluid to be targeted.
  • Each one of the lances entails the use of a hydraulic circuit and all the necessary equipment to supply each fluid to the corresponding lance thereof, making it difficult to use each one of them, as well as an increase in the cost of the installation due to the duplication of components.
  • washing lances are known that have independent inlets and outlets in the same lance, i.e., they have a specific channel to spray the fluid at high pressure, this one ending in a nozzle with a small-sized opening, and a second channel to project the foam, which ends in a second nozzle with a larger-sized opening.
  • An example of this double channel system is anticipated in document DE3214180A1 , which describes a washing lance that has an additional device that enables the fluid to be channelled through a second channel by using a valve. This system has the drawback that by doubling the channel, the weight of the device increases, making it more uncomfortable for the user.
  • Another arrangement known in the state of the art consists of using a single channel for the fluid, either at low pressure or at high pressure, being able to switch the ending of the channel between a small opening nozzle and a large opening nozzle, depending on the washing program.
  • documents DE10257783B3 and EP0146795A describe a nozzle connected to a washing lance with two different positions that are switched manually, modifying the path that the fluid follows until it reaches the outlet opening.
  • these arrangements have the drawback that the switching must be done manually, so it is not guaranteed that, during the selection of the washing program, the fluid will exit through the appropriate opening, which may cause incorrect foaming.
  • a different arrangement is also known that incorporates a shared channel, as described in documents DE3544340 and EP1663504B1 , which use a nozzle that automatically switches between two positions.
  • the fluid has enough pressure to advance the plunger to the high pressure position, the system works properly.
  • the described systems have the drawback that the fluid circulates through both openings, both through the opening arranged for low pressure or foam and through the high pressure opening.
  • the foamy fluid passes through the high pressure opening, as a result of having a smaller diameter, it breaks the foam generating a jet of fluid without foam that in turn breaks the foam, which is projected through the larger diameter nozzle, thus projecting a low density or quality foam.
  • the present invention describes an automatic switching nozzle intended to be connected in a vehicle washing system wherein there is a hydraulic circuit wherein a hose (29) is located for connecting a washing gun with a lance wherein the nozzle (1) is connected.
  • the nozzle comprises an outer casing with a fluid inlet opening and a fluid outlet opening.
  • a piston slides through this narrowing, which piston comprising a head, a longitudinal recess, a transverse hole and a widening in the open base.
  • the inner capsule is separated from the outer casing by means of a separation that configures a channel.
  • the head of the piston is located in the second chamber while the open base of the piston is located in the first chamber wherein there is also a spring clasping the piston that is supported between the widening of the end and the separation wall of the chambers. In this way, the spring forces the piston to be in contact with the end of the outer casing. Furthermore, the transverse hole of the piston is aligned with the transverse opening of the inner capsule.
  • the nozzle behaves differently depending on whether the liquid enters inside at low pressure or at high pressure.
  • the fluid when the liquid enters at low pressure through the fluid inlet opening of the outer casing, the fluid enters the recess of the piston, continues through the transverse hole to be directed, through the channel, towards the fluid outlet opening, through which it leaves the nozzle.
  • the fluid enters the recess of the piston, pressing on the inner surface of the piston, exerting a force that exceeds that of the spring and moving the piston to cause the misalignment of the transverse hole with the transverse opening.
  • the fluid circulates through the transverse hole of the piston and is directed towards the second chamber to exit through an internal opening located at the end towards the fluid outlet opening, through which it leaves the nozzle.
  • the force of the spring defines the working limit of the nozzle between low pressure and high pressure.
  • one option is for the piston to slide through a first gasket located between the spring and the wall of the narrowing and through a second gasket located between the wall of the narrowing and a projection of the second chamber.
  • Figure 1 and Figure 2 represent a front view and a longitudinal cross section of the nozzle of the invention in operating positions with fluid at low pressure and at high pressure, respectively.
  • the nozzle (1) of the invention is configured by means of an outer casing (2) that incorporates a fluid inlet opening (4) and a fluid outlet opening (5). Internally, it comprises a recessed inner capsule (3) open at the ends. It is attached to the outer casing (2) at the end wherein the fluid inlet opening (4) is located to extend coaxially towards the end wherein the fluid outlet opening (5) is located, wherein it incorporates an internal opening (14) for the outlet of fluid from the internal capsule (3). Furthermore, the inner capsule (3) configures a first chamber (12), located in the area closest to the fluid inlet opening (4) and a second chamber (13), located at the other end. The end of the first chamber (12) is open coaxially with the fluid inlet opening (4). The end of the second chamber (13) incorporates an internal opening (14) located coaxially with the fluid outlet opening (5).
  • the separation gap between the outer casing (2) and the inner capsule (3) configures a channel (6) for the circulation of the fluid in low pressure or foam conditions, as will be described later.
  • the attachment of the two chambers (12, 13) has a wall with a narrowing in which a transverse hole (11) is located that passes through the inner capsule (3), communicating the two chambers (12, 13) with the channel (6).
  • a piston (7) open at one end is supported on the end of the outer casing (2) that incorporates the fluid inlet opening (4) at the open end.
  • the piston (7) passes tightly through the narrowing, leaving the closed end, or head (10) of the piston (7), located in the second chamber (13).
  • the piston (7) also incorporates a transverse opening (15) so that, when it is supported on the outer casing (2), it is in correspondence with the transverse hole (11) of the inner capsule (3) leaving the recess (8) of the piston (7) connected to the channel (6).
  • the first chamber (12) further incorporates a spring (18) that clasps the piston (7).
  • One end of the spring (18) is supported on the wall of the first chamber (12) wherein the narrowing is by means of a first gasket (16) while the other end of the spring (18) is supported on a widening that has the piston (7) at the open end by means of which it is supported on the outer casing (2).
  • the spring (18) causes the piston (7), in a standby state, to be pressed against the outer casing (2).
  • the first gasket (16) clasps the piston (7) tightly to provide watertightness of the first chamber (12) with the narrowing.
  • a second gasket (17), of the rod seal type clasps the end of the head (10) of the piston (7) tightly to provide watertightness between the narrowing and the second chamber (13).
  • the nozzle (1) is located at the free end of a lance (31) attached to a pressure gun (30) for washing vehicles.
  • the spring (18) has enough force to maintain the position thereof when the fluid enters at low pressure, between 1 and 6 bars. This is the situation represented in Figure 1 .
  • the fluid enters inside the nozzle (1) through the fluid inlet opening (4) to enter the recess (8) of the piston (7), exits through the transverse hole (11) and through the transverse opening (15) to enter the channel (6) and exit the nozzle (1) through the fluid outlet opening (5).
  • the movement of the piston (7) causes the transverse hole (11) of the piston (7) to cease to be in correspondence with the transverse opening (15) of the inner capsule (3), blocking the access of the fluid to the channel (6).
  • the transverse opening (15) of the piston (7) is positioned in the second chamber (13), enabling the fluid to access it to exit through the internal opening (14) and be directed towards the fluid outlet opening (5), with which it is aligned, to exit the nozzle (1).
  • the same pressure group (19) is used to drive the liquid to the nozzle (1) and, as the high pressure valve (21) does not open, a low pressure valve (26) acts, opening or closing the circuit through a second branch.
  • the chemical product that enables the foam to be manufactured is introduced into said circuit through another dosing pump (23) connected to the corresponding check valve (24), which prevents the channelling of the liquid in the opposite direction.
  • the initial fluid is mixed with the chemical product that passes through a Venturi (26) wherein a gas is introduced at a pressure lower than that of the fluid, through a compressor (27) that also incorporates a check valve (23) that enables the gas to flow only in the direction of the hydraulic circuit.
  • This mixture of gas, water and chemical product is homogenised in a static mixer (28), producing a dense foam.

Landscapes

  • Nozzles (AREA)
EP21162264.2A 2020-03-25 2021-03-12 Buse de commutation automatique Withdrawn EP3885051A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES202030538U ES1247064Y (es) 2020-03-25 2020-03-25 Boquilla de conmutacion automatica

Publications (1)

Publication Number Publication Date
EP3885051A1 true EP3885051A1 (fr) 2021-09-29

Family

ID=70846374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21162264.2A Withdrawn EP3885051A1 (fr) 2020-03-25 2021-03-12 Buse de commutation automatique

Country Status (2)

Country Link
EP (1) EP3885051A1 (fr)
ES (1) ES1247064Y (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111940164B (zh) * 2020-08-20 2021-09-14 广东博智林机器人有限公司 自动喷枪、喷涂设备及喷涂设备的喷涂控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214180A1 (de) 1982-04-17 1983-10-20 Wolfgang 4800 Bielefeld Suttner Zusatzgeraet fuer eine spritzpistole
EP0146795A2 (fr) 1983-11-25 1985-07-03 K.E.W. Industri A/S Buse éjectrice pour unités de nettoyage à haute pression
DE3544340A1 (de) 1984-12-19 1986-06-19 Spraying Systems Co., Wheaton, Ill. Doppelzweckduese
EP0207501A2 (fr) * 1985-07-05 1987-01-07 K.E.W. Industri A/S Soupape automatique d'aspiration et de transfert et appareil de nettoyage à jet muni de celle-ci
EP1054158A2 (fr) * 1999-05-21 2000-11-22 Arrow Line S.R.L. Unité de nettoyage à haute pression avec valve de dérivation
DE10257783B3 (de) 2002-12-11 2004-03-18 Alfred Kärcher Gmbh & Co. Kg Düsenanordnung für ein Hochdruckreinigungsgerät
EP1663504B1 (fr) 2004-09-13 2007-08-15 WashTec Holding GmbH Lance de nettoyage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214180A1 (de) 1982-04-17 1983-10-20 Wolfgang 4800 Bielefeld Suttner Zusatzgeraet fuer eine spritzpistole
EP0146795A2 (fr) 1983-11-25 1985-07-03 K.E.W. Industri A/S Buse éjectrice pour unités de nettoyage à haute pression
DE3544340A1 (de) 1984-12-19 1986-06-19 Spraying Systems Co., Wheaton, Ill. Doppelzweckduese
EP0207501A2 (fr) * 1985-07-05 1987-01-07 K.E.W. Industri A/S Soupape automatique d'aspiration et de transfert et appareil de nettoyage à jet muni de celle-ci
EP1054158A2 (fr) * 1999-05-21 2000-11-22 Arrow Line S.R.L. Unité de nettoyage à haute pression avec valve de dérivation
DE10257783B3 (de) 2002-12-11 2004-03-18 Alfred Kärcher Gmbh & Co. Kg Düsenanordnung für ein Hochdruckreinigungsgerät
EP1663504B1 (fr) 2004-09-13 2007-08-15 WashTec Holding GmbH Lance de nettoyage

Also Published As

Publication number Publication date
ES1247064U (es) 2020-06-01
ES1247064Y (es) 2020-08-27

Similar Documents

Publication Publication Date Title
US7641133B2 (en) Cleaning lance
KR100429702B1 (ko) 가스-액적류 발생장치 및 밸브
KR950004144B1 (ko) 수도 꼭지용 샤워헤드
EP3885051A1 (fr) Buse de commutation automatique
EP1253361A1 (fr) Soupape de dérivation
CN113117909B (zh) 出水装置及厨房花洒
US3228560A (en) Apparatus for mixing fluids
US20230184341A1 (en) Diversion device, series of diversion devices and use of a standard interface for fastening different variants of diversion devices
US8393350B2 (en) Methods and apparatus for introducing additives into a fluid flow
CN111594642B (zh) 转换阀装置
US11732449B2 (en) Water outlet device
CN108458135B (zh) 拉出式龙头水路切换控制机构
JP7514701B2 (ja) 泡消火設備
TW201800666A (zh) 脈動閥裝置
KR100572806B1 (ko) 소량 발포 살포·대량 살포 전환형 분무 노즐
JPH0854076A (ja) 逆流防止装置付き混合栓
EP2459909A2 (fr) Systèmes de distribution de fluide
KR20090029925A (ko) 온수분배기의 밸브구조
CN118167825B (zh) 出水装置
WO2023166838A1 (fr) Dispositif de distribution d'eau
KR200316427Y1 (ko) 좌변기용 비데의 개폐밸브
KR102179546B1 (ko) 수전장치용 어댑터 및 이를 적용한 개폐 카트리지 유닛
KR960008208Y1 (ko) 냉.온수 혼합 수도밸브의 충격흡수장치
CN216440890U (zh) 一种两相流汽车清洗喷嘴
CN220590387U (zh) 花洒及淋浴设备

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220125

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: B05B 1/12 20060101AFI20220427BHEP

INTG Intention to grant announced

Effective date: 20220524

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20221005