EP0460500A2 - Appareil de thermo-rétraction à main - Google Patents

Appareil de thermo-rétraction à main Download PDF

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Publication number
EP0460500A2
EP0460500A2 EP91108658A EP91108658A EP0460500A2 EP 0460500 A2 EP0460500 A2 EP 0460500A2 EP 91108658 A EP91108658 A EP 91108658A EP 91108658 A EP91108658 A EP 91108658A EP 0460500 A2 EP0460500 A2 EP 0460500A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
hand
shrinking device
mixing
combustion chamber
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.)
Granted
Application number
EP91108658A
Other languages
German (de)
English (en)
Other versions
EP0460500B1 (fr
EP0460500A3 (en
Inventor
Reiner Hannen
Robert Habegger
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.)
MSK Verpackungs Systeme GmbH
Original Assignee
Develog Reiner Hannen and Cie
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 Develog Reiner Hannen and Cie filed Critical Develog Reiner Hannen and Cie
Priority to AT91108658T priority Critical patent/ATE104230T1/de
Publication of EP0460500A2 publication Critical patent/EP0460500A2/fr
Publication of EP0460500A3 publication Critical patent/EP0460500A3/de
Application granted granted Critical
Publication of EP0460500B1 publication Critical patent/EP0460500B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a hand-held shrinking device with an injector burner, which has a fuel gas nozzle which is arranged in a mixing nozzle which tapers in the direction of flow and which draws in combustion air through its end with the larger cross section, and with a combustion chamber.
  • Hand shrinking devices are known in various designs. They are used to shrink shrink films that surround a stack of goods or the like. Via a fuel gas supply, which is connected to a handle containing control devices, valves and the like, the hand shrinking device is supplied with fuel gas which is mixed in the mixing chamber with combustion air. The mixture is burned in a combustion chamber and from there it passes through an outlet nozzle into the open or into the area of the shrink film to be shrunk.
  • the injector burner has only a single mixing nozzle. In order to achieve a sufficient mixing of fuel gas and combustion air, the mixing nozzle must be relatively long. The hand shrinking device must also be appropriately large be. so that its manageability is unsatisfactory. Furthermore, the performance of a hand shrinking device is limited due to this construction.
  • the object of the invention is to improve the performance and handiness of a hand shrinking device.
  • This object is achieved in that a plurality of mixing nozzles are arranged one behind the other in the direction of flow, the mixing nozzle arranged upstream in each case projecting with its outlet opening into the suction end of the mixing nozzle arranged downstream.
  • the mixing nozzle arranged in front of the combustion chamber is a Venturi nozzle, in which in particular the outlet mouth widens up to the cross section of the combustion chamber. Then a largely calmed flow enters the combustion chamber, which is usually designed and z. B. is also equipped with a flame holder.
  • the mixing nozzles are expediently housed in a housing which has air inlet openings on the circumference, which lead to the suction ends of the mixing nozzles.
  • a housing which has air inlet openings on the circumference, which lead to the suction ends of the mixing nozzles.
  • the housing is surrounded by a soundproofing jacket at least in the area of the air inlet openings.
  • a preferred embodiment of the invention is characterized in that the flat nozzle has a wall made of a material with low thermal conductivity and high heat resistance.
  • the wall of the flat nozzle should consist of ceramic.
  • the wall can also have an inner jacket and / or outer jacket made of sheet metal.
  • a flame holder and an ignition device are arranged in the region of a combustion chamber arranged in the flow direction in front of the flat nozzle
  • Ignitor consists of an electrically conductive pipe section connecting housing parts and an insulated ignition cable embedded therein and a free end of the ignition cable protrudes into the pipe section.
  • the pipe section is open on the combustion chamber side and ends at the flame holder or in the flow direction behind the flame holder and that the free end of the ignition cable is arranged in the open end of the pipe section, so that an ignition spark can always ignite only the mixture located in the combustion chamber.
  • the stability of the flame in the combustion chamber is not only guaranteed by the flame holder arranged there, but can also be supported by appropriate design of the components preceding in the flow direction, the arrangement of the fuel gas nozzle also being particularly important.
  • the invention recommends placing the fuel gas nozzle at a distance L1 from the outlet opening of the next mixing nozzle, which corresponds to 1.5 to 2.5 times the diameter D1 of this outlet opening. If the fuel gas nozzle beyond has a teardrop shape, with the slender end pointing in the direction of flow, very high fuel gas velocities essential for the injector effect are achieved.
  • the hand shrinking device shown in the drawing is intended for shrinking shrink film which surrounds, for example, a stack of goods.
  • the basic structure of the hand-held shrinking device consists of an elongated housing 1 and a handle 2 connected to it.
  • a fuel gas hose (not shown) can be connected to the handle 2 and can thus be connected to a fuel gas line 3 guided inside the handle 2.
  • a not shown belongs to the fuel gas line 3 Valve, which is housed in the handle 2, which can also contain other control devices and an ignition device.
  • the fuel gas line 3 opens at a fuel gas nozzle 4 through which the fuel gas emerges in the longitudinal direction of the housing or in the flow direction 5.
  • 4 mixing nozzles 6, 7 and a Venturi nozzle 8 are arranged behind the fuel gas nozzle.
  • the respective upstream mixing nozzles 6 protrude with their outlet opening 9 into the suction end 10 of the mixing nozzle 7 arranged downstream.
  • the fuel gas nozzle 4 is arranged in the region of the suction end 10 of the upstream mixing nozzle 6.
  • the downstream mixing nozzle 7 projects with its outlet opening into the suction end 10 of the Venturi nozzle 8 or is arranged in the region of this suction end.
  • the housing 1 has circumferential air inlet openings which lead to the suction ends 10 of the mixing nozzles 6, 7 and the Venturi nozzle 10. In the area of the air inlet openings 11, the housing 1 is surrounded by a soundproof jacket 12.
  • a mixing chamber 13 adjoins the outlet opening of the Venturi nozzle 8, the cross section of which corresponds to the cross section of the outlet opening 9 of the Venturi nozzle 8.
  • the mixing chamber 13 is followed in the flow direction 5 by a combustion chamber 14 with an outlet nozzle 15.
  • the mixing chamber 13 and the combustion chamber 14 can have customary internals, eg. B. a turbulence grid 16 in the mixing chamber and / or one Flame holder 17 in the combustion chamber 14.
  • an ignition device 21 is arranged in the center in the area of the flame holder 17, which in the illustrated embodiment includes a pipe section 22 which is connected to housing parts in an electrically conductive manner.
  • a pipe section 22 which is connected to housing parts in an electrically conductive manner.
  • the z. B. can consist of PTFE.
  • an ignition cable 24 is embedded, the free End 25 protrudes into a chamber of the tube section 22 open towards the combustion chamber 14.
  • the fuel gas nozzle 4 has a teardrop shape, the slimmer end pointing in the direction of flow 5.
  • the end of the fuel gas nozzle 4 is arranged at a distance L1 from the outlet opening 9 of the next mixing nozzle 6, which corresponds to 1.5 to 2.5 times the diameter D1 of this outlet nozzle 9.
  • the hand-held shrinking device shown works as follows: Under the injector effect of the fuel gas emerging from the fuel gas nozzle 4, air is sucked into the mixing nozzle 6, which mixes with the fuel gas. The mixture passes through the outlet opening 9 of the mixing nozzle 6 into the mixing nozzle 7, in which air is in turn sucked in by the injector action. The same applies when the resulting mixture enters the Venturi nozzle 8.
  • the length of the hand shrinking device can be kept shorter with a comparable hand shrinking device with the same performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Vehicle Body Suspensions (AREA)
  • Nozzles (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manipulator (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
EP91108658A 1990-06-05 1991-05-28 Appareil de thermo-rétraction à main Expired - Lifetime EP0460500B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91108658T ATE104230T1 (de) 1990-06-05 1991-05-28 Handschrumpfgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9006308U 1990-06-05
DE9006308U DE9006308U1 (de) 1990-06-05 1990-06-05 Handschrumpfgerät

Publications (3)

Publication Number Publication Date
EP0460500A2 true EP0460500A2 (fr) 1991-12-11
EP0460500A3 EP0460500A3 (en) 1992-04-15
EP0460500B1 EP0460500B1 (fr) 1994-04-13

Family

ID=6854393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108658A Expired - Lifetime EP0460500B1 (fr) 1990-06-05 1991-05-28 Appareil de thermo-rétraction à main

Country Status (11)

Country Link
US (1) US5156542A (fr)
EP (1) EP0460500B1 (fr)
JP (1) JP3112979B2 (fr)
AT (1) ATE104230T1 (fr)
CZ (1) CZ279516B6 (fr)
DE (2) DE9006308U1 (fr)
ES (1) ES2051048T3 (fr)
HU (1) HU211011B (fr)
PL (1) PL166594B1 (fr)
RU (1) RU2011118C1 (fr)
YU (1) YU48308B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649824A (en) * 1995-02-21 1997-07-22 Stagg; Stanley E. Portable heating device
US5975883A (en) * 1998-01-23 1999-11-02 Gas Research Institute Method and apparatus for reducing emissions in combustion products
FR2975168B1 (fr) * 2011-05-13 2013-08-16 Sefmat Appareil generateur d'air chaud a allumage ameliore.
US10184664B2 (en) * 2014-08-01 2019-01-22 Capstone Turbine Corporation Fuel injector for high flame speed fuel combustion
RU191002U1 (ru) * 2018-10-19 2019-07-18 Федеральное государственное бюджетное образовательное учреждение высшего образования "Амурский государственный университет" Инжекторная газовая горелка
CN112013394B (zh) * 2019-05-30 2021-08-20 宁波方太厨具有限公司 引射管组件
FR3113717B1 (fr) * 2020-08-27 2022-08-26 Sefmat Dispositif d’injection de gaz pour un générateur d’air chaud

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063396A (en) * 1934-09-17 1936-12-08 Homer P Parrigin Gas fuel burner
US2386978A (en) * 1941-10-20 1945-10-16 Charles L Ruhl Gas generating burner
GB615822A (en) * 1946-08-12 1949-01-12 Albert Horace Greaves Improvements in or relating to gas burners
GB1337121A (en) * 1970-11-30 1973-11-14 Airoil Burner Fuel burner assemblies
US3990835A (en) * 1974-07-26 1976-11-09 Occidental Petroleum Corporation Burner for igniting oil shale retort
DE2822192A1 (de) * 1978-05-20 1979-11-22 Msk Verpackung Syst Gmbh Handschrumpfgeraet fuer die erzeugung eines heissluftstrahls zum schrumpfen von kunststoffolien o.dgl.
GB1599662A (en) * 1978-05-04 1981-10-07 Quietflo Eng Ltd Silencing and air control devices for fuel burners
EP0099828A2 (fr) * 1982-07-15 1984-02-01 Compagnie De Raffinage Et De Distribution Total France Dispositif pour la combustion de fluides combustibles avec induction d'air

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329844A (en) * 1885-11-03 mulloy
US569984A (en) * 1896-10-20 Virgil w
US2117270A (en) * 1935-06-29 1938-05-17 Fred S Bloom Apparatus for producing progressively delayed combustion
US2239025A (en) * 1939-02-20 1941-04-22 Franco American Patents Ltd Fuel burner
GB687662A (en) * 1949-10-05 1953-02-18 Ronald Calvert Improvements in or relating to gas burners
US2720257A (en) * 1952-04-16 1955-10-11 Lynes Roberts Kitchener Gas burning torches
US3070317A (en) * 1958-05-21 1962-12-25 Hunter Variable rate multiple fuel nozzle
BE791005A (fr) * 1971-11-10 1973-03-01 Zagoroff Dimiter S Procede et appareillage de chauffage a basse temperature et de contraction de matiere plastique
US3940234A (en) * 1974-05-28 1976-02-24 John Zink Company Noiseless pms burner
US3907489A (en) * 1974-10-03 1975-09-23 Selas Corp Of America Noise suppressor for burner
IT1036845B (it) * 1975-06-11 1979-10-30 Sphirt Snc Apparecchio rescaldatore prtatile a ventaglio di fiamme
US4029462A (en) * 1975-12-10 1977-06-14 National Airoil Burner Co., Inc. Burner with noise suppressor
BE841708A (fr) * 1976-05-11 1976-11-12 Bruleurs.
US4128389A (en) * 1977-08-22 1978-12-05 Combustion Unlimited Incorporated Flare stack gas burner
GB2030280B (en) * 1977-09-29 1982-03-10 Hadland & Olive Ltd Heat gun
FR2615271B1 (fr) * 1987-05-12 1990-03-16 Stepack Bruleur a gaz, de type a buse froide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063396A (en) * 1934-09-17 1936-12-08 Homer P Parrigin Gas fuel burner
US2386978A (en) * 1941-10-20 1945-10-16 Charles L Ruhl Gas generating burner
GB615822A (en) * 1946-08-12 1949-01-12 Albert Horace Greaves Improvements in or relating to gas burners
GB1337121A (en) * 1970-11-30 1973-11-14 Airoil Burner Fuel burner assemblies
US3990835A (en) * 1974-07-26 1976-11-09 Occidental Petroleum Corporation Burner for igniting oil shale retort
GB1599662A (en) * 1978-05-04 1981-10-07 Quietflo Eng Ltd Silencing and air control devices for fuel burners
DE2822192A1 (de) * 1978-05-20 1979-11-22 Msk Verpackung Syst Gmbh Handschrumpfgeraet fuer die erzeugung eines heissluftstrahls zum schrumpfen von kunststoffolien o.dgl.
EP0099828A2 (fr) * 1982-07-15 1984-02-01 Compagnie De Raffinage Et De Distribution Total France Dispositif pour la combustion de fluides combustibles avec induction d'air

Also Published As

Publication number Publication date
YU48308B (sh) 1998-05-15
EP0460500B1 (fr) 1994-04-13
HU911847D0 (en) 1991-12-30
DE59101353D1 (de) 1994-05-19
JPH05132038A (ja) 1993-05-28
JP3112979B2 (ja) 2000-11-27
CS168791A3 (en) 1992-02-19
ES2051048T3 (es) 1994-06-01
PL166594B1 (pl) 1995-06-30
HUT59474A (en) 1992-05-28
US5156542A (en) 1992-10-20
YU95691A (sh) 1995-03-27
DE9006308U1 (de) 1990-08-09
EP0460500A3 (en) 1992-04-15
RU2011118C1 (ru) 1994-04-15
CZ279516B6 (cs) 1995-05-17
HU211011B (en) 1995-09-28
ATE104230T1 (de) 1994-04-15
PL290534A1 (en) 1992-02-10

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