EP3184443B1 - Dispositif et procédé destiné à tempérer un écoulement de fluide formé par de l'air et/ou du gaz par regroupement de l'écoulement de fluide formé par l'air et/ou le gaz et d'un débit de gaz chaud - Google Patents

Dispositif et procédé destiné à tempérer un écoulement de fluide formé par de l'air et/ou du gaz par regroupement de l'écoulement de fluide formé par l'air et/ou le gaz et d'un débit de gaz chaud Download PDF

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Publication number
EP3184443B1
EP3184443B1 EP16197118.9A EP16197118A EP3184443B1 EP 3184443 B1 EP3184443 B1 EP 3184443B1 EP 16197118 A EP16197118 A EP 16197118A EP 3184443 B1 EP3184443 B1 EP 3184443B1
Authority
EP
European Patent Office
Prior art keywords
air
gas
flow
fluid flow
openings
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
EP16197118.9A
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German (de)
English (en)
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EP3184443A2 (fr
EP3184443A3 (fr
Inventor
Christian Napravnik
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.)
Krones AG
Original Assignee
Krones AG
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Filing date
Publication date
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Publication of EP3184443A2 publication Critical patent/EP3184443A2/fr
Publication of EP3184443A3 publication Critical patent/EP3184443A3/fr
Application granted granted Critical
Publication of EP3184443B1 publication Critical patent/EP3184443B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/063—Tunnels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21003—Burners specially adapted for a particular use for heating or re-burning air or gas in a duct

Definitions

  • the present invention relates to a device and a method for tempering a fluid flow formed by air and / or gas via a combination of the fluid flow formed by air and / or gas with a hot gas volume flow.
  • tempated and fluid flows formed by air and / or gas may be used to shrink packaging material onto a collection of packaging goods, such as beverage containers or the like.
  • shrink tunnels can be used in practice, in which the shrinkage takes place by means of a hot air or hot gas stream.
  • This hot gas stream can also be referred to as a shrinkage gas stream.
  • the shrink gas flow is usually applied obliquely to the respective, already wrapped with the shrink wrap packaging units to shrink the shrink film on the packaging units or containers. Further, the shrink gas flow may also be directed to the underside of the shrink wrap wrapped product to seal the overlapping ends of the shrink wrap there, i. to be welded or glued.
  • Such a device is, for example, from the DE 10 2013 215 415 A1 known.
  • the thermal energy necessary for shrinking packaging material onto articles is obtained in this known device by means of an internal combustion engine and an additional electric heater.
  • the internal combustion engine also drives a converter for converting mechanical shaft power into electrical power for the at least partial operation of the electric auxiliary heater.
  • the exhaust gas volume flow of the internal combustion engine is guided for controlling the temperature of the shrinkage gas flow via a heat exchanger.
  • the apparatus comprises a hot gas generator with a gas burner, the combustion products of which are passed as hot gas stream into a mixing device, which is formed by a channel portion which is arranged between a funnel-like, in the flow direction constricting line section and a flared diffuser area. Furthermore, a hot gas stream generated by the gas burner is admixed within the mixing device to a cold air stream, so that a hot air stream can be removed from the diffuser section and used for shrinking the films. The hot air flow is thus mixed by means of a Venturi nozzle the cold air flow.
  • Another device for heat treatment of packaging goods also discloses the EP 2 162 693 B1 .
  • This known device has a burner unit with a fan and a burner head, in which a cuboid pore element is held. Below the burner head, a collection and outlet element is arranged.
  • the collection and outlet member has a plurality of openings, which open into a plurality of pipe sections. The pieces of pipe can release gas.
  • the DE 10 2007 030 264 A1 discloses a burner unit having a collection and outlet member having a hood or roof-like body. On the longitudinal sides of the base body, a fastening strip is formed in order to arrange the collecting and outlet element on a burner head. On a first level openings are introduced into the body, which share proportionally in a blank, which can discharge gas. Further openings lead through a wall of the base body out of the collection and outlet element.
  • a primary object of the invention is therefore to provide a generic device or a generic system and method available, which are formed improved in terms of the disadvantages described above. Furthermore, the device and the system should have a simple structure. The process should also be implemented in a straightforward way.
  • the invention relates to a device for tempering a fluid flow formed by air and / or gas by merging the fluid flow formed by air and / or gas with a hot gas volume flow.
  • the device comprises at least one machine for generating the hot gas volume flow.
  • the at least one machine may be formed by at least one burner or at least one gas burner.
  • the hot gas volume flow can be designed as a waste gas volume flow of the at least one machine or of the at least one burner and / or gas burner.
  • the fluid flow formed by air and / or gas can, in conceivable embodiments, for example, tapped from a shrinking device or a shrink tunnel and optionally, as described below, are brought together for temperature control with a generated via the at least one hot gas flow.
  • the fluid flow formed by air and / or gas may at least partially have constituents of a combustion gas.
  • the fluid flow formed by air and / or gas may already have a temperature level which is formed enlarged relative to a temperature level of ambient air.
  • it may be that the fluid flow formed by air and / or gas is formed as fresh air or ambient air.
  • the apparatus also includes a channel providing a flow path for the fluid flow formed by air and / or gas.
  • the device may comprise at least one flow generating device or at least one fan.
  • the device comprises an at least partially positioned in the flow path feeding device, which is in flow communication for introducing the hot gas volume flow into the channel with the at least one machine and the channel.
  • the feed device for introducing the hot gas volume flow into the channel has a plurality of openings positioned in the region of the flow path, of which a plurality of openings at least two openings are located at different vertical height levels.
  • the hot gas volume flow can pass through the at least two openings positioned at different vertical height levels and be subsequently merged with the fluid flow formed by air and / or gas at different vertical levels.
  • a homogeneous temperature of the fluid flow formed by air and / or gas is achieved.
  • Practice has also shown that several openings, of which at least two openings are at different vertical height levels, have a positive effect on the performance of the at least one machine or of the at least one burner.
  • the supply device and the at least one machine are in fluid communication with one another such that the hot gas volume flow can be passed on from the at least one machine in the direction from above to the feed device.
  • the feed device and the at least one machine are in fluid communication with one another such that the hot gas volume flow in the direction or opposite direction of a flow direction of the fluid flow formed by air and / or gas can be passed on to the feed device. In this case, the hot gas volume flow can be moved horizontally or substantially horizontally.
  • the feed device comprises a plurality of adjacent hollow bodies extending into the channel and in each case in fluid communication with the at least one machine for receiving the hot gas volume flow, wherein the broad side surfaces of the plurality of adjacent hollow bodies are oriented parallel to each other and wherein at least one of the respective two opposite broad side surfaces of the plurality of adjacent hollow body at least two openings are introduced, which are located at different vertical height levels.
  • the feed device may have an input for the hot gas volume flow generated by the at least one machine, and a dimensioning and / or number of the plurality of openings may be formed such that an opening cross-section of the feed device resulting from the plurality of openings is removed from the input increased in size.
  • the feeder may have a larger number of openings in a region which is farther away from the entrance to a region which is located closer to the entrance.
  • openings which are located in an area further away from the entrance may be enlarged in size in relation to openings which are located closer to the entrance.
  • a temperature of the hot gas flow decreases as it is removed from the inlet of the feeder. In order to achieve as homogeneous a temperature as possible of the tempered fluid flow formed by air and / or gas, the opening cross-section of the feed device can therefore be designed as described.
  • a plurality of openings can be introduced in rows or horizontally oriented rows in the feeder.
  • Embodiments have proved useful in which at least two and preferably more than two horizontally oriented rows are provided, which have a certain distance from one another in the vertical direction.
  • the feeder has multiple rows along the flow path into the feeder, each having a plurality of openings, the plurality of rows having their respective plurality of openings located at different vertical height levels.
  • the feed device comprises at least one hollow body, as already described above, the plurality of rows may be formed as part of the at least one hollow body. If the at least one hollow body has two opposite broad side surfaces, then in each case a plurality of rows each having a plurality of openings can be made in at least one of the two opposite broad side surfaces and preferably in both of the two opposing broad side surfaces, the plurality of rows having their respective plurality of openings different vertical height levels.
  • the channel comprises a certain section, which of the feed device in the flow direction of the formed by air and / or gas Fluid flow is arranged upstream, wherein the cross section of the specific section widened in the direction of the feed device.
  • Such embodiments further contribute to achieving a homogeneous heat distribution in the tempered and formed by air and / or gas fluid flow.
  • the previously described several hollow body of the feeder are each formed cuboid and have an identical volume and also together form a roof with an area size A1.
  • the hollow bodies together have an areal extent transversely to the flow path or to the flow direction of the fluid flow formed by air and / or gas having a size A2 and in each case opposite broad side surfaces of the hollow body each have an identical surface area A3.
  • the area size A1 can be at least 1.6 times and preferably at least twice the area size A2.
  • the area size A2 may be at least 1.6 times and preferably at least twice the area size A3.
  • the invention also relates to a system for the heat treatment of packaged goods by means of a tempered fluid flow formed by air and / or gas.
  • the system comprises a device as described above and also at least one shrink tunnel.
  • the channel of the device opens in the context of the system according to the invention for the application of packaging goods with the tempered and formed by air and / or gas fluid flow in the at least one shrink tunnel.
  • the invention relates to a method for heat treatment of packaging goods by means of a tempered and formed by air and / or gas fluid flow.
  • a method for heat treatment of packaging goods by means of a tempered and formed by air and / or gas fluid flow.
  • Features described above for various embodiments of the device or system may also be used for conceivable embodiments of the method.
  • features described below for conceivable embodiments of the method according to the invention can be provided in the system according to the invention or in the device according to the invention and are therefore not mentioned redundantly.
  • a fluid flow formed by air and / or gas is brought about and guided along a flow path.
  • Flow path can be provided through a channel.
  • the fluid flow formed by air and / or gas can be brought about by a flow generation device and at least approximately linearly moved along the flow path. It may also be that the fluid flow formed by air and / or gas is tapped from a shrink tunnel. Alternatively, it is conceivable that the fluid flow formed by air and / or gas is formed as fresh air or ambient air.
  • a hot gas volume flow is generated which has a higher temperature level than the fluid flow formed by air and / or gas.
  • At least one burner or gas burner may be provided, wherein the hot gas volume flow is formed as a waste gas volume flow of the at least one burner or gas burner.
  • the invention is not limited to such embodiments. It may also be that, for example, at least one electric machine or electrically operated heater is provided, which provides the hot gas volume flow.
  • the hot gas volume flow and the fluid flow formed by air and / or gas are combined, resulting in a tempered and formed by air and / or gas fluid flow is formed. Subsequently, packaged goods are subjected to the tempered fluid flow formed by air and / or gas.
  • embodiments have proved successful, in which the hot gas volume flow passes through the plurality of openings and, with respect thereto temporally, impinges obliquely on the fluid flow formed by air and / or gas.
  • the flow resistance is thereby kept very low, which also has an advantageous effect on a homogeneous temperature of the fluid flow formed by air and / or gas and does not preclude movement of the fluid flow formed by air and / or gas.
  • the at least one hollow body can act as a heat exchanger on the fluid flow formed by air and / or gas by means of at least two broadside surfaces oriented along the flow path or, as a heat exchanger, temper the fluid flow formed by air and / or gas.
  • the hot gas volume flow is introduced via an input into the feed device and leaves the feed device via the plurality of openings, whereby an opening cross-section of the feed device resulting from the plurality of openings increases in size as it is removed from the input.
  • the Fig. 1 shows a schematic view of an already known from the prior art device 1a for heat treatment in the figures description not shown with packaged goods.
  • Part of the device 1a is a hot gas generator 12, which is designed as a gas burner 14.
  • the combustion products 16 of the hot gas generator 12 and gas burner 14 are passed as hot gas volume flow 17 in a mixing device 18 which is formed by a channel portion 20 which is arranged between a funnel-like, narrowing in the flow direction line section 22 and a flared diffuser region 24.
  • the hot gas volume flow 17 is admixed with a cold air stream 26 so that a tempered fluid flow 28 formed by air and / or gas can be removed from the diffuser region 24 and used for shrinking films onto packaging goods.
  • the hot gas volume flow 17 is sucked in by cooperation of the narrowing line section 22 with the expanding diffuser region 24 by means of a Venturi effect.
  • a Venturi effect has shown that such suction and delivery of the hot gas volume flow 17 to the mixing device 18 can adversely affect a flame or power of the gas burner 14.
  • the tempered and formed by air and / or gas fluid flow 28 has an inhomogeneous temperature distribution, which can be associated with disadvantages in the shrink-wrapping of films on packaging goods.
  • Fig. 2 shows a schematic view of a conceivable embodiment of a device 1 according to the invention for controlling the temperature of a by air and / or gas formed fluid flow 3 via merging the fluid flow 3 formed by air and / or gas with a hot gas volume flow 17th
  • a machine 13 In order to generate the hot gas volume flow 17, a machine 13 is provided, which is designed as a gas burner 14.
  • the hot gas volume flow 17 is formed by combustion products 16 of the machine 13 and the gas burner 14 and guided in the downward direction.
  • the hot gas volume flow 17 has a higher temperature level compared to the fluid flow 3 formed by air and / or gas, so that the fluid flow 3 formed by air and / or gas is heated when merging with the hot gas volume flow 17.
  • the machine 13 is formed by an electric hot air generator.
  • a channel 5 can be seen, which provides a direction indicated by arrow and located in the interior of the channel 5 flow path 7 for the formed by air and / or gas fluid flow 3.
  • the fluid flow 3 formed by air and / or gas can, for example, be tapped from a shrink tunnel and moved along the flow path 7.
  • the fluid flow 3 formed by air and / or gas can also be introduced into the channel 5 as fresh air or ambient air and subsequently move along the channel 5 or along the flow path 7 formed over the channel 5.
  • the shows Fig. 2 a feed device 6 which is positioned in the flow path 7 or to which feed device the fluid flow 3 formed by air and / or gas strikes during its movement along the flow path 7.
  • the feeder 6 is preceded by a section 22 of the channel 5, the cross-section of which widens in the direction of the feeder 6.
  • the feed device 6 is in flow communication with the machine 13 or with the gas burner 14 and the channel 5, so that the combustion products 16 of the machine 13 or the hot gas volume flow 17 can be introduced into the channel 5 by means of the feed device 6.
  • the feed device 6 comprises a plurality or a plurality of openings 9, which are positioned at different vertical height levels.
  • the feed device 6 comprises several rows 31 (see. Fig. 3 ) are introduced at openings 9 in the feeder 6, which rows 31 extend along the formed through the channel 5 flow path 7 and on different vertical height levels.
  • the hot gas volume flow 17 can exit via the openings 9 from the feed device 6 and enter the channel 5.
  • the openings 9 or the rows 31 are introduced at openings 9 into the feed device 6 in such a way that the hot gas volume flow 17 strikes the fluid flow 3 formed by air and / or gas obliquely to the flow direction of the fluid flow 3 formed by air and / or gas. Accordingly, the openings 9 are introduced into the feed device 6 in such a way that the hot gas volume flow 17 exits the feed device 6 at an angle to the flow path 7 formed by the channel 5.
  • the feeder 6 is thus designed as a cross-flow heat exchanger.
  • the feed device 6 extends vertically at least approximately over an entire cross section or diameter of the channel 5.
  • the fluid flow 3 formed by air and / or gas is guided via the channel 5 and is thereby moved past the feed device 6.
  • the hot gas volume flow 17 is passed from the machine 13 in the direction from above to the feeder 6.
  • a fluid flow 3 formed by air and / or gas can be heated in such a way that a temperature-controlled fluid flow 28 resulting from the heating and formed by air and / or gas has a homogeneously distributed temperature level.
  • a flow resistance associated with the supply of the hot gas volume flow 17 is only small.
  • a power or flame of the machine 13 designed as a gas burner 14 is not or only slightly influenced by the flow connection of the machine 13 or the gas burner 14 via the feeding device 6 with the channel 5.
  • FIG. 3 shows an embodiment of the device 1 according to Fig. 2 ,
  • the machine 13 or the gas burner 14 and the channel 5 are in Fig. 3 not shown.
  • the feed device 6 comprises a plurality of hollow body 15, whose respective longitudinal axis is oriented vertically and which each have an input 11 for a by the machine 13 (see. Fig. 2 ) have generated hot gas volume flow 17.
  • a synopsis of FIGS. 3 and 4 also illustrates that the hollow body 15 each form two opposite broad side surfaces 21 and 23, wherein between the hollow bodies 15 and between facing broad side surfaces 21 and 23 each directly adjacent hollow body 15 a respective path 19 is formed, which can pass through the fluid flow 3 formed by air and / or gas for the purpose of their temperature and merging with the hot gas volume flow 17.
  • the respective opposite broad side surfaces 21 and 23 of a respective hollow body 15 are oriented parallel to each other. In the region of the respective path 19 or between directly adjacent hollow bodies 15, the fluid flow 3 formed by air and / or gas is in each case combined with the hot gas volume flow 17 and thereby tempered.
  • FIGS. 3 and 4 can be seen that the broad side surfaces 21 and 23 in or along a flow direction of the fluid flow 3 formed by air and / or gas. If the fluid flow 3 formed by air and / or gas is guided past the broad side surfaces 21 and 23 of the hollow body 15 by the paths 19, a heat exchange takes place between the hollow bodies 15 or broad side surfaces 21 and 23 of the hollow body 15 and through air and / or Gas formed fluid flow 3, whereby the fluid flow 3 formed by air and / or gas is tempered.
  • the feeding device 6 and the hollow body 15 are thus each formed as a heat exchanger.
  • FIGS. 3 and 4 clarify beyond that opposite broad side surfaces 21 and 23 of a respective hollow body 5 each form a plurality of rows 31 with a plurality of openings 9, which rows 31 are introduced at different vertical height levels in the feeder 6 and in the hollow body 15.
  • Fig. 3 clarifies the hot gas flow rate 17 via the inputs 11 in the hollow body 15.
  • a temperature level of the hot gas volume flow 17 decreases gradually.
  • embodiments have proven in which an opening 9 resulting from the opening cross-section of the feeder 6 or hollow body 15 increases in amount from the entrances 11 , For example.
  • openings 9, which are located further away from the entrances 11, can have a larger dimensioning than openings 9, which are located closer to the entrances 11.
  • openings 9 are to be understood merely by way of example, so that in further embodiments, in addition or alternatively, openings 9 may be provided which are formed by a slot and / or have further geometries.
  • the Fig. 4 shows a schematic side view of the embodiment according to the Figures 2 and 3 ,
  • the channel 2 and the machine 13 and the gas burner 14 are for reasons of clarity in Fig. 4 still not shown.
  • Fig. 4 are the previously mentioned and formed between adjacent hollow bodies 15 paths 19, through which the fluid flow 3 formed by air and / or gas for the purpose of their temperature and during their movement along the flow path 7 passes.
  • the hollow bodies 15 taper or taper towards the direction of flow of the fluid flow 3 formed by air and / or gas. This also helps to keep a flow resistance low.
  • the schematic view of Fig. 5 shows a further conceivable embodiment variant of the device according to the invention 1.
  • the device 1 according to Fig. 5 has a channel 5 with a section 22 which widens in the direction of a feed device 6.
  • the feed device 6 forms a plurality of openings 9, which are located at different vertical height levels.
  • a machine 13 is provided, which is designed as a gas burner 14 and generates a hot gas volume flow 17.
  • the hot gas volume flow 17 is introduced horizontally into the feed device 6.
  • a flow direction of the hot gas volume flow 17 is oriented before or at its entry into the feed device 6 substantially parallel to a flow direction of the fluid flow 3 formed by air and / or gas.
  • the feeding device 6 also comprises a plurality of adjacent hollow bodies 15 whose broad side surfaces 21 and 23 are oriented in the flow direction of the fluid flow 3 formed by air and / or gas or which are present in FIG Direction of a formed when entering the feeder 6 flow direction of the hot gas flow 17.
  • After entering the hot gas volume flow 17 leaves the feeder 6 via the openings 9 and in this case heats the fluid flow formed by air and / or gas 3.
  • the tempered and formed by air and / or gas fluid flow is further referenced 28.
  • the Fig. 6 shows a schematic view of another conceivable embodiment of a device according to the invention 1.
  • the device 1 according to Fig. 6 a channel 5 having a section 22 which widens in the direction of a feeder 6.
  • the feeder 6 has a plurality of openings 9 located at different vertical height levels.
  • a machine 13 is part of the device 1, which machine 13 is designed as a gas burner 14 and generates a hot gas volume flow 17.
  • the flow resistance can be kept low.
  • an opening 9 resulting from the opening cross-section of the feeder 6 or hollow body 15 increases in terms of amount when removing inputs.
  • a resulting from the openings 9 opening cross-section of the feeder 6 or hollow body 15 in the vertical direction downwards increase. This makes it possible to achieve a homogeneous heat distribution of the tempered fluid flow 28 formed by air and / or gas.
  • the Fig. 7 shows a schematic view of another conceivable embodiment of a device according to the invention 1. It can be seen in Fig. 1 Furthermore, a channel 5 with a in the direction of the feeder 6 expanding portion 22. As in the previous embodiments, the feeder 6 has a plurality of openings 9, which are located at different vertical height levels. In addition, a designed as a gas burner 14 machine 13 is provided which generates a hot gas volume flow 17.
  • the hot gas volume flow 17 of the feeder 6 is supplied in or with a flow direction, which the Direction of flow of the fluid flow 3 formed by air and / or gas is directed opposite.
  • the Fig. 8 shows a schematic perspective view of an embodiment of a feeding device 6, as it may be provided for a device 1 according to the invention.
  • the feeding device 6 comprises a multiplicity of adjacent hollow bodies 15, to which a hot gas volume flow 17 can be proportionally supplied, and which in each case has several in Fig. 8 do not form with illustrated openings 9, of which there are at least two openings 9 at different vertical height levels. All of the hollow body 15 have an identical geometry or are cuboid and have an identical volume. Next, the hollow body 15 together form a roof 41 with an area size A1.
  • the hollow body 15 or feed device 6, which comprises the plurality of hollow bodies 15, has a planar extension transverse to the longitudinal direction of the channel 5 or of the flow path 7 with a size A2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (14)

  1. Tunnel de rétraction comprenant un dispositif destiné à tempérer un courant de fluide (3) formé par de l'air et/ou du gaz, en réunissant ledit courant de fluide (3) formé par de l'air et/ou du gaz et un débit volumique de gaz chaud (17), comprenant
    - au moins une machine (13) destinée à générer ledit débit volumique de gaz chaud (17),
    - un canal (5) qui fournit un trajet d'écoulement (7) pour le courant de fluide (3) formé par de l'air et/ou du gaz,
    - un dispositif d'alimentation (6) qui est positionné au moins par sections dans le trajet d'écoulement (7) et qui est en communication fluidique avec ladite au moins une machine (13) et ledit canal (5) pour introduire le débit volumique de gaz chaud (17) dans le canal (5),
    - dans lequel, pour introduire le débit volumique de gaz chaud (17) dans le canal (5), le dispositif d'alimentation (6) présente une pluralité d'ouvertures (9) positionnées au niveau du trajet d'écoulement (7), parmi laquelle pluralité d'ouvertures (9) au moins deux ouvertures (9) sont situées à des niveaux de hauteur verticaux différents, et dans lequel il est prévu que
    - le dispositif d'alimentation (6) comprend une pluralité de corps creux (15) adjacents qui s'étendent dans le canal (5) et sont en communication fluidique avec ladite au moins une machine (13) pour recevoir le débit volumique de gaz chaud (17) et qui forment lesdites au moins deux ouvertures (9) situées à des niveaux de hauteur verticaux différents et possèdent deux surfaces de côté large (21, 23) opposées et s'étendant le long du trajet d'écoulement, et dans lequel
    - lesdites surfaces de côté large (21, 23) de la pluralité de corps creux (15) adjacents sont orientées parallèlement les unes aux autres, et dans lequel dans respectivement l'une au moins des deux surfaces de côté large (21, 23) opposées respectives de la pluralité de corps creux (15) adjacents sont ménagées au moins deux ouvertures (9) qui se trouvent à des niveaux de hauteur verticaux différents, et dans lequel
    la pluralité de corps creux (15) du dispositif d'alimentation (6) sont chacun en forme de parallélépipède rectangle et possèdent chacun un volume approximativement identique, forment ensemble un toit (41) ayant une taille de surface A1, possèdent ensemble une étendue en surface transversale au trajet d'écoulement (7), qui présente une taille A2, et présentent chacun des surfaces de côté large (21, 23) opposées ayant chacune une taille de surface A3 identique, où: A1 > A2 > A3.
  2. Dispositif selon la revendication 1, dans lequel le dispositif d'alimentation (6) et ladite au moins une machine (13) sont en communication fluidique l'un avec l'autre de telle sorte que le débit volumique de gaz chaud (17) peut être transféré depuis ladite au moins une machine (13), dans la direction venant d'en haut, audit dispositif d'alimentation (6).
  3. Dispositif selon la revendication 1 ou la revendication 2, dans lequel la taille de surface A1 correspond au moins à 1,6 fois la taille de surface A2.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, dans lequel la taille de surface A1 correspond au moins à deux fois la taille de surface A2.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, dans lequel la taille de surface A2 correspond au moins à 1,6 fois la taille de surface A3.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, dans lequel la taille de surface A2 correspond au moins à deux fois la taille de surface A3.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, dans lequel le dispositif d'alimentation (6) comprend au moins une entrée (11) pour le débit volumique de gaz chaud (17) généré par ladite au moins une machine (13), et dans lequel un dimensionnement et/ou une répartition de ladite pluralité d'ouvertures (9) dans le dispositif d'alimentation (6) est conçu(e) de telle sorte qu'une section transversale d'ouverture du dispositif d'alimentation (6), qui résulte de la pluralité d'ouvertures (9), augmente en valeur lorsqu'on s'éloigne de ladite au moins une entrée (11).
  8. Dispositif selon l'une quelconque des revendications 1 à 7, dans lequel le dispositif d'alimentation (6) comprend une pluralité de rangées (31) ayant chacune une pluralité d'ouvertures (9), qui sont réalisées le long du chemin d'écoulement (7) dans le dispositif d'alimentation (6), dans lequel la pluralité de rangées (31) avec leurs plusieurs ouvertures (9) respectives sont situées à des niveaux de hauteur verticaux différents.
  9. Dispositif selon l'une quelconque des revendications 1 à 8, dans lequel le canal (5) comprend une certaine portion (22) qui est agencée en amont du dispositif d'alimentation (6) dans le sens d'écoulement du courant de fluide (3) formé par de l'air et/ou du gaz, dans lequel la section transversale de ladite certaine portion (22) s'élargit en direction du dispositif d'alimentation (6).
  10. Procédé de traitement thermique de produits d'emballage au moyen d'un courant de fluide (28) tempéré et formé par de l'air et/ou du gaz et au moyen d'un tunnel de rétraction selon l'une quelconque des revendications 1 à 9, le procédé comprenant au moins les étapes suivantes:
    - amener un courant de fluide (3) formé par de l'air et/ou du gaz et guider ledit courant de fluide (3) formé par de l'air et/ou du gaz le long d'un trajet d'écoulement (7),
    - générer un débit volumique de gaz chaud (17) qui présente un niveau de température supérieur à celui du courant de fluide (3) formé par de l'air et/ou du gaz,
    - réunir le débit volumique de gaz chaud (17) et le courant de fluide (3) formé par de l'air et/ou du gaz, d'où résulte la formation d'un courant de fluide (28) tempéré et formé par de l'air et/ou du gaz,
    - soumettre les produits d'emballage au courant de fluide (28) tempéré et formé par de l'air et/ou du gaz,
    - réunir, via plusieurs ouvertures (9) d'un dispositif d'alimentation (6), le débit volumique de gaz chaud (17) et le courant de fluide (3) formé par de l'air et/ou du gaz, parmi laquelle pluralité d'ouvertures (9) au moins deux ouvertures (9) sont situées à des niveaux de hauteur verticaux différents.
  11. Procédé selon la revendication 10, dans lequel le débit volumique de gaz chaud (17) traverse la pluralité d'ouvertures (9) et, après cela, rencontre de manière oblique le courant de fluide (3) formé par de l'air et/ou du gaz.
  12. Procédé selon la revendication 10 ou 11, dans lequel le débit volumique de gaz chaud (17), avant de le réunir avec le courant de fluide (3) formé par de l'air et/ou du gaz, est déplacé à travers au moins un corps creux (15) qui forme la pluralité d'ouvertures (9) dont au moins deux sont situées à des niveaux de hauteur différents, et qui agit au moyen d'au moins deux surfaces de côté large (21, 23) orientées le long du trajet d'écoulement (7), en tant qu'échangeur de chaleur sur le courant de fluide (3) formé par de l'air et/ou du gaz.
  13. Procédé selon l'une quelconque des revendications 10 à 12, dans lequel le débit volumique de gaz chaud (17), avant de le réunir avec le courant de fluide (3) formé par de l'air et/ou du gaz, est divisé et est déplacé à travers une pluralité de corps creux (15) comprenant chacun une pluralité d'ouvertures (9) et respectivement deux surfaces de côté large (21, 23) orientées le long du trajet d'écoulement (7), via lesquelles ladite pluralité de corps creux (15) agit respectivement en tant qu'échangeur de chaleur sur le courant de fluide (3) formé par de l'air et/ou du gaz.
  14. Procédé selon l'une quelconque des revendications 10 à 13, dans lequel le débit volumique de gaz chaud (17) est introduit via une entrée (11) dans le dispositif d'alimentation (6) et quitte le dispositif d'alimentation (6) via ladite pluralité d'ouvertures (9), dans lequel une section transversale d'ouverture du dispositif d'alimentation (6), qui résulte de la pluralité d'ouvertures (9) augmente en valeur lorsqu'on s'éloigne de ladite entrée (11).
EP16197118.9A 2015-12-22 2016-11-03 Dispositif et procédé destiné à tempérer un écoulement de fluide formé par de l'air et/ou du gaz par regroupement de l'écoulement de fluide formé par l'air et/ou le gaz et d'un débit de gaz chaud Active EP3184443B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015226466.1A DE102015226466A1 (de) 2015-12-22 2015-12-22 Vorrichtung und Verfahren zum Temperieren einer durch Luft und/oder Gas gebildeten Fluidströmung über Zusammenführen der durch Luft und/oder Gas gebildeten Fluidströmung mit einem Heißgasvolumenstrom

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EP3184443A2 EP3184443A2 (fr) 2017-06-28
EP3184443A3 EP3184443A3 (fr) 2017-09-27
EP3184443B1 true EP3184443B1 (fr) 2019-09-18

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DE102007030264B4 (de) * 2007-06-28 2009-10-01 Khs Ag Brennereinheit
DE102009003575A1 (de) 2009-03-06 2010-09-09 Krones Ag Vorrichtung und Verfahren zur Wärmebehandlung von Verpackungsgütern
DE202012104290U1 (de) * 2012-11-08 2013-11-15 Krones Aktiengesellschaft Schrumpfvorrichtung mit Gasbrennereinheit
DE102013101782A1 (de) * 2013-02-22 2014-08-28 Khs Gmbh Schrumpftunnelanlage sowie ein zugehöriges Verfahren zum Aufschrumpfen einer Schrumpffolie auf Packformationen
ITRM20130121A1 (it) * 2013-02-28 2014-08-29 Ne E Automazione S P A Impianto di riscaldamento per preforme di contenitori
DE102013215415A1 (de) 2013-08-06 2015-02-12 Krones Aktiengesellschaft Verfahren und Vorrichtung zum Schrumpfen von Materialien auf Artikel und/oder auf eine Zusammenstellung von Artikeln

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CN206361921U (zh) 2017-07-28
EP3184443A2 (fr) 2017-06-28
EP3184443A3 (fr) 2017-09-27

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