EP4552760A1 - Spülmaschine mit zwei richtungsdüsen - Google Patents

Spülmaschine mit zwei richtungsdüsen Download PDF

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Publication number
EP4552760A1
EP4552760A1 EP23209307.0A EP23209307A EP4552760A1 EP 4552760 A1 EP4552760 A1 EP 4552760A1 EP 23209307 A EP23209307 A EP 23209307A EP 4552760 A1 EP4552760 A1 EP 4552760A1
Authority
EP
European Patent Office
Prior art keywords
rinsing
nozzle
machine
container
axial
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.)
Pending
Application number
EP23209307.0A
Other languages
English (en)
French (fr)
Inventor
Riccardo PANZA
Pierluigi Quagliarella
Enrico LUCANI
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.)
Sidel Participations SAS
Original Assignee
Sidel Participations SAS
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 Sidel Participations SAS filed Critical Sidel Participations SAS
Priority to EP23209307.0A priority Critical patent/EP4552760A1/de
Priority to PCT/EP2024/080072 priority patent/WO2025103729A1/en
Publication of EP4552760A1 publication Critical patent/EP4552760A1/de
Pending legal-status Critical Current

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Classifications

    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0433—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of gas surrounded by an external conduit of liquid upstream the mixing chamber
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/30—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking and having conveyors
    • B08B9/32—Rotating conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/34—Arrangements of conduits or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies

Definitions

  • the present invention relates to a rinsing machine for rinsing containers in the field of packaging pourable products by means of containers, a rinsing unit which can be used in the rinsing machine, and a packaging apparatus comprising the rinsing machine.
  • a rinsing unit according to any of the appended unit claims or according to present description allows to improve the rinsing effect.
  • a rinsing machine according to any of the appended machine claims or according to present description comprises a rinsing unit according to any of the appended unit claims or according to present description.
  • a packaging apparatus according to any of the appended apparatus claims or according to present description comprises a rinsing machine according to any of the appended machine claims or according to present description.
  • number 1 indicates, as a whole, a rotary rinsing machine for rinsing containers 3 for containing pourable products, in particular pourable food products.
  • the containers 3 are for example for containing a pourable carbonated food product such as sparkling water, carbonated drinks, etc.
  • the rinsing machine 1 is in particular configured to be used in a packaging apparatus for packaging a carbonated pourable product by means of bottles 3, for example PET bottles 3.
  • the rinsing machine 1 comprises a plurality of rinsing units 2.
  • the rinsing machine 1 is configured so that the containers 3 are sequentially rinsed by means of respective rinsing units 2.
  • Each rinsing unit 2 is configured for internally rinsing the container 3 by means of a respective nozzle 21, which is configured to adopt an active condition, in which it dispenses a rinsing mixture, and an inactive condition, in which it does not dispense any rinsing mixture.
  • Each rinsing unit 5 comprises the respective nozzle 21.
  • the rinsing machine 1 is configured so that each container 2 is rinsed by at least automatically and intermittently switching the respective nozzle 21 between said active condition and said inactive condition.
  • the rinsing mixture is indicated with RF in Figure 3 .
  • each time the nozzle 21 adopts the active condition there is at least one respective peak of flow rate of the rinsing mixture. For each switching from inactive condition to active condition, there is at least one peak. Therefore, the rinsing effect is improved by the plurality of peaks of rinsing mixture.
  • Each nozzle 21 is configured to adopt a variable degree of penetration Z in the container 2.
  • the rinsing machine 1 is configured so that the degree of penetration Z follows a time trend TT during the rinsing treatment comprising an upward stretch US, during which the degree of penetration Z increases, and a downward stretch DS, during which the degree of penetration Z decreases.
  • the rinsing machine 1 is configured so that the nozzle 21 is intermittently switched between said active condition and inactive condition along at least one of said upward stretch US and downward stretch DS.
  • the nozzle 21 is switched intermittently along at least each of said upward and downward stretches US and DS.
  • the time trend TT is shown in Figure 4 .
  • the time trend TT comprises a constant stretch CS along which the degree of penetration Z is constant.
  • the rinsing machine 1 is configured so that the nozzle 21 is intermittently switched between said active and inactive conditions along at least said constant stretch CS. In this way the benefit of the intermittent switching is furtherly enhanced.
  • the constant stretch CS can correspond to the maximum degree of penetration, which can be for example 0,13 meters.
  • Each unit 2 comprises a gripper 22 for gripping the container.
  • the machine 1 comprises a first cam 7 for overturing each gripped container 2, so that the rinsing is performed by the nozzle 21 in the overturned container 2.
  • the machine 1 comprises a second cam 8 for regulating said time trend TT of the degree of penetration Z of the nozzle 21 in the overturned container 2.
  • the first cam 7 and the second cam 8 are indicated at least in part in Figures 1 and 3 .
  • Each rinsing unit 5 comprises a respective first cam follower for interacting with said first cam 7 to overturn the container and a respective second cam follower for interacting with said second cam 8 for regulating said degree of penetration.
  • the machine 1 comprises a conveyor 4 configured to sequentially convey each rinsing unit 2 through an input station 5 for receiving the container 2 to be rinsed, a rinsing path RP along which the rinsing occurs, and an optout station 6 for releasing the rinsed container 2.
  • the conveyor 4 comprises a carousel which is rotatable around a central axis X.
  • the rinsing machine 1 is configured so that the active condition of each nozzle 21 corresponds to a plurality of first sectors 31 of the rinsing path RP, which are alternated with a plurality of second sectors 32 of the rinsing path RP.
  • the second sectors S2 correspond to the inactive condition of each nozzle 21.
  • the first sectors 31 and the second sectors 32 are shown in Figure 2 .
  • Each first sector 31 corresponds to an active period T1 of the nozzle 21, during which the nozzle 21 adopts the active condition
  • each second sector 32 corresponds to an inactive period T2 of the nozzle 21, during which the nozzle 21 adopts the inactive condition.
  • the rinsing machine 1 is configured to allow a user to set the duration of both active and inactive periods T1 and T2.
  • the active periods T1 and the inactive periods T2 are indicated along the abscissa axis in Figure 4 .
  • Each active period T1 corresponds to a rinsing pulse. Therefore, each rinsing unit 2 is configured for performing a pulsed rinsing treatment in the respective container.
  • the value of the duration of each active period T1 can fall between for example 0,3 seconds and 0,5 seconds, or between 0,35 seconds and 0,45 seconds.
  • the value of duration of each active period T1 can be for example 0,4 seconds.
  • an optimal trade off is obtained between the need of exploiting a high number of peaks or pulses of the flow rate of rinsing mixture, and the need of reducing consumption. Also, an optimal trade off is obtained between the need of increasing the number of peaks or pulses of the flow rate of rinsing mixture, and the need of reducing the stress on the involved components of the machine.
  • the value of the duration of each inactive period T2 can fall between for example 0,1 seconds and 0,3 seconds, or between 0,15 seconds and 0,25 seconds.
  • the value of duration of each inactive period T2 can be for example 0,2 seconds. In this way an optimal trade off is obtained between the need of having many peaks or pulses of flow rate and the need of increasing the draining effect on the rinsing mixture between each couple of subsequent pulses.
  • the value of total duration of the rinsing treatment, including active periods and inactive periods, can fall between 6,5 seconds and 13,5 seconds, or between 7 seconds and 11 seconds.
  • the apparatus is configured for the packaging of pourable products by means of containers 3.
  • the apparatus is configured for packaging a pourable food product by means of plastic bottles 3.
  • the apparatus comprises a forming machine for sequentially forming the containers 3.
  • the forming machine can be for example a blowing machine, for example a blow molding machine.
  • the apparatus comprises the rinsing machine 1, for sequentially rinsing the formed containers 3.
  • the apparatus comprises a filling machine for sequentially filling the rinsed containers 3 with the pourable product.
  • the rinsing machine 1 is configured for performing the pulsed rinsing treatment described above, which is in particular advantageous in case between the forming machine and the rinsing machine there is also a coating machine for coating the inner surface of each container, for example a plasma coating machine.
  • the improvement of the rinsing effect is in particular useful to reduce possible residuals of material of the coating.
  • the coating serves in particular to reduce migration of gas through the wall of the container. Therefore, the rinsing machine 1 is in particular useful in case the containers are for containing a carbonated food product, like for example a carbonated beverage.
  • Each rinsing unit 2 comprises a spraying tube 9 with an internal pipe 91 for conveying a gaseous fluid and an external pipe 92, which is coaxial with respect to the internal pipe 91 and surrounds the internal pipe 91 for conveying a liquid fluid in the radial gap G between the internal and external pipes 91, 92.
  • the gaseous fluid flowing through the internal pipe 91 is pressurized, i.e., a distributor delivers the gaseous fluid to the internal pipe 91 with a pressure which is greater than atmospheric pressure.
  • the rinsing fluid and the gaseous fluid may be for example water and air, respectively.
  • the spraying tube 9 extends along an axis thereof between two opposites axial ends 94, 95.
  • the axial end 95 receives the gaseous fluid in the internal pipe 91 and the liquid fluid in the radial gap G from the distributor, which may be arranged substantially at the center of the carousel. In particular, the axial end 95 extends radially with respect to the axis X, more preferably radially toward the distributor.
  • the gaseous fluid may be air.
  • the liquid fluid may be water.
  • the axial end 94 extends parallel to the axis X; in particular, the spraying tube 9 includes an intermediate axial portion between the axial ends 94, 95, the intermediate portion extending according substantially to a U shape to join the axial ends 94, 95 to each other.
  • the nozzle 21 is mounted on the axial end 94 of the spraying tube 9 to receive both the liquid and the gaseous fluid from the spraying tube 9.
  • the rinsing mixture comprises the liquid fluid and the gaseous fluid, and therefore for example air and water.
  • the nozzle 21 communicates with the axial end 94. More precisely, the nozzle 21 internally defines a mixing chamber 93, which communicates with the axial end 94.
  • the mixing chamber 93 receives the liquid and the gaseous fluid from the spraying tube 9, so that the liquid and the gaseous fluid mix to each other within the mixing chamber 93.
  • the liquid fluid axially enters in the mixing chamber 93 radially surrounding an axial flow of the pressurized gaseous fluid incoming in the mixing chamber 93 from the internal pipe 91.
  • an inner radial portion of the mixing chamber 93 is axially traversed conceptually by a first fluid flow containing more gaseous fluid than liquid fluid
  • an outer radial portion of the mixing chamber 93 is axially traversed conceptually by a second fluid flow containing more liquid fluid than gaseous fluid, even if no actual separation or boundaries can be observed between the first and the second fluid flow.
  • a full mixture of the liquid and gaseous fluids occurs within the mixing chamber 93, even if the distribution of the liquid and gaseous phase within the rinsing mixture RF is not equal in the inner and the outer radial portions of the mixing chamber 93.
  • the rinsing mixture RF has a radially inner fluid flow defining a fluid core, comprising more gaseous phase than liquid phase, and a radially outer fluid flow defining a fluid ring surrounding the fluid core about axis X and comprising more liquid phase than gaseous phase.
  • the rinsing mixture RF comprises a biphasic fluid comprising a gaseous and a liquid phase mixed to each other, for example air and water.
  • the nozzle 21 has an axial end 211 and a further opposite axial end communicating with the spraying tube 9.
  • the mixing chamber 93 is axially interposed between the axial ends 94, 211.
  • the nozzle 21 comprises a plurality of radial holes 212 for dispensing radial jets RJ of the mixture from the mixing chamber 93.
  • at least a portion of the radial holes 212 is arranged according to a circular pattern on an orthogonal plane to axis X. More in particular, this portion of the radial holes 212 is angularly distributed around axis X in a uniform manner.
  • the radial jet RJ is indicated in Figures 9 and 10 .
  • the nozzle 21 has at least one axial hole 213 positioned at the axial end 211; in other words, the axial end 211 has the axial hole 213, which is for dispensing an axial jet AJ of the rinsing mixture RF from the mixing chamber 93.
  • the axial jet is indicated in Figures 9 and 10 .
  • the nozzle 21 is configured to eject both axial and radial jets AJ, RJ to improve the rinsing effect of the rinsing unit 2.
  • the radial jets RJ are directed directly towards the lateral surfaces of the container 3, so that the latter is subject to a greater pressure of the rinsing mixture RF corresponding to a more powerful rinsing effect.
  • the radial holes 212 provides a pressure drop to the axial flow of the rinsing mixture RF within the mixing chamber 93, so that the radially inner flow of the gaseous fluid is invited to expand radially, which is beneficial for the mixing with the radially outer flow of the liquid fluid.
  • This mixing effect clearly also reflects into an improvement of the rinsing effect of the rinsing unit 2.
  • the nozzle 21 comprises two axial sectors 214, 215 respectively defining the radial holes 212 and the axial hole 213.
  • the axial sector 214 is arranged between the other axial sector 215 and the spraying tube 9 on which the nozzle 21 is mounted at the axial end 94.
  • the axial sector 215 is more axially tapered than the axial sector 214 and narrowing towards the axial end 211.
  • the axial sector 214 is substantially cylindrical, namely having cross sections with constant dimensions along axis X.
  • the axial sector 215 is frustum-conical shaped, namely having cross sections with decreasing dimensions along axis X towards the axial end 211.
  • the mostly gaseous fluid core tends to radially expand along axis X, whereas the radial dimensions of the mostly liquid surrounding ring is narrowed by the tapering inner lateral surface of the axial sector 215, so that the radially outer fluid flow is accelerated, in particular due to a Venturi-kind effect.
  • the acceleration of the radially outer fluid through the axial hole 213 is beneficial for the rinsing effect of the rinsing unit 2.
  • the rinsing mixture RF is forced to better lap the inner lateral surfaces of the container 3, thanks to the fluid core that pushes the radially outer fluid radially outward.
  • the nozzle 21 is preferably movable in a vertical direction, parallel to the axis X from a lowered rest position, in which the nozzle 21 is arranged outside the container 3, to an intermediate position in which the nozzle 21 enters the container 3 and to a raised work position, in which the nozzle 21 projects inside the container 3; and vice versa from the raised work position to lowered rest position.
  • the nozzle 21 is indeed moved back down in the vertical direction to disengage the container 3 for draining the rinsing mixture RF out of the container 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP23209307.0A 2023-11-13 2023-11-13 Spülmaschine mit zwei richtungsdüsen Pending EP4552760A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23209307.0A EP4552760A1 (de) 2023-11-13 2023-11-13 Spülmaschine mit zwei richtungsdüsen
PCT/EP2024/080072 WO2025103729A1 (en) 2023-11-13 2024-10-24 Rinsing machine with double direction nozzles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23209307.0A EP4552760A1 (de) 2023-11-13 2023-11-13 Spülmaschine mit zwei richtungsdüsen

Publications (1)

Publication Number Publication Date
EP4552760A1 true EP4552760A1 (de) 2025-05-14

Family

ID=88793057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23209307.0A Pending EP4552760A1 (de) 2023-11-13 2023-11-13 Spülmaschine mit zwei richtungsdüsen

Country Status (2)

Country Link
EP (1) EP4552760A1 (de)
WO (1) WO2025103729A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA900829A (en) * 1972-05-23 Barry-Wehmiller Company Container rinsing and treating apparatus
US4125120A (en) * 1976-02-23 1978-11-14 Abbott Laboratories Washing apparatus for containers
JPS602487A (ja) * 1983-06-14 1985-01-08 日立造船株式会社 ロ−タリ−式リンサ−
EP0381841A1 (de) * 1989-01-27 1990-08-16 Robert Bosch Gmbh Verfahren und Vorrichtung zum Reinigen und Sterilisieren von Behältern
CN201086082Y (zh) * 2007-08-20 2008-07-16 温州市金瓯轻工机械有限公司 一种广口瓶全自动回转式冲瓶机的冲洗机构
JP2010179927A (ja) * 2009-02-04 2010-08-19 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd 異物除去装置、電子線殺菌システム
JP2012170852A (ja) * 2011-02-18 2012-09-10 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd 異物除去装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA900829A (en) * 1972-05-23 Barry-Wehmiller Company Container rinsing and treating apparatus
US4125120A (en) * 1976-02-23 1978-11-14 Abbott Laboratories Washing apparatus for containers
JPS602487A (ja) * 1983-06-14 1985-01-08 日立造船株式会社 ロ−タリ−式リンサ−
EP0381841A1 (de) * 1989-01-27 1990-08-16 Robert Bosch Gmbh Verfahren und Vorrichtung zum Reinigen und Sterilisieren von Behältern
CN201086082Y (zh) * 2007-08-20 2008-07-16 温州市金瓯轻工机械有限公司 一种广口瓶全自动回转式冲瓶机的冲洗机构
JP2010179927A (ja) * 2009-02-04 2010-08-19 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd 異物除去装置、電子線殺菌システム
JP2012170852A (ja) * 2011-02-18 2012-09-10 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd 異物除去装置

Also Published As

Publication number Publication date
WO2025103729A1 (en) 2025-05-22

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