WO2007017106A1 - Conduite de fluide frigorigene - Google Patents

Conduite de fluide frigorigene Download PDF

Info

Publication number
WO2007017106A1
WO2007017106A1 PCT/EP2006/007351 EP2006007351W WO2007017106A1 WO 2007017106 A1 WO2007017106 A1 WO 2007017106A1 EP 2006007351 W EP2006007351 W EP 2006007351W WO 2007017106 A1 WO2007017106 A1 WO 2007017106A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant pipe
metal hose
pipe according
inner liner
wall thickness
Prior art date
Application number
PCT/EP2006/007351
Other languages
German (de)
English (en)
Inventor
Richard Bantscheff
Carlo Burkhardt
Reiner Karl
Carsten Noltenius
Thomas Pfaff
René Rösler
Original Assignee
Witzenmann Gmbh
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 Witzenmann Gmbh filed Critical Witzenmann Gmbh
Priority to EP06776410A priority Critical patent/EP1910725A1/fr
Publication of WO2007017106A1 publication Critical patent/WO2007017106A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated

Definitions

  • the invention relates to a refrigerant line for use in air conditioning in particular of motor vehicles with a corrugated metal hose with radially outlying wave crests and radially inner wave troughs.
  • a generic refrigerant line is known, for example, from EP-A 1 048 881, where the refrigerant line consists of a metal tube with a radially compressive flexible metal jacket surrounding it as an axial support, and a space filling the space between the metal tube and the jacket Intermediate layer made of pressure-resistant plastic.
  • the metal tube is optimized in terms of pulsation strength on the one hand and mobility on the other hand, that he has a greater wall thickness, at least in some areas of its peaks as at least in some areas of its troughs.
  • the wall thickness of the wave peaks just lower than the wall thickness of the troughs
  • a metal hose with opposite wall thickness ratios is proposed
  • the thinner wall thickness of the troughs continues to provide mobility in particular in the various bending directions, while the thicker wave crests, which are primarily claimed in the occurrence of the internal pressure pulsation, are more stable and thereby not only reduce the adverse length change effects, but also prevents fatigue of the metal hose in - otherwise very heavily used - area of the wave crests.
  • the metal hose of the refrigerant pipe according to the invention has a wall thickness in the range between 0.17 and 0.25 mm at least in subregions of its wave crests and at least in partial areas of its wave troughs a wall thickness in the range between 0.10 and 0.18 mm.
  • the metal hose is suitably ring corrugated and made of austenitic or ferritic steel or aluminum or Inconel or aluminum alloys.
  • the metal hose Due to the inventive design of the wall thicknesses, it is possible for the metal hose to withstand pressures of up to 180 bar or pressure pulsation forces of between 5 and 180 bar, which can occur within the shortest time periods, for example within a quarter of a second. At these pressures, the metal hose according to the invention nevertheless has a permeation density of less than 1 g / year due to its material in order to be usable for CO 2 feeds.
  • the metal tube has a mobility in the three spatial axes of the order of +/- 15 mm over its axial length.
  • the metal tube it is expedient if this has a ratio of outer diameter of the wave crests to inner diameter of the troughs of greater than 1, 3 and in particular greater than 1, 4 and beyond a wavelength of less than 3 mm, preferably between 1, 5 and 2.5 mm, wherein the waves are advantageously formed ⁇ -shaped in order to obtain the largest possible number of waves per length and thus to achieve the highest possible flexibility.
  • the inner liner is preferably made of PTFE or a PTFE composite material and has at least in some areas a wall thickness (S a ) in the range of between 0.1 and 1, 0 mm and in particular between 0.4 and 0.6 mm.
  • the inner liner is radially spaced from the radially outer wave crests of the metal tube, so that between the inner liner and the wave crests spaced from him buffer areas for the at pressure peaks of any pressure pulsations of the refrigerant radially outwardly expanding inner liner are provided.
  • the refrigerant pipe is on the one hand in their mobility not or not significantly limited, so sufficiently flexible;
  • the metal hose with the inner liner and the buffer areas arranged between them ensure very good pressure pulsation damping.
  • the metal hose of the refrigerant pipe with further line components also on the radial outside, that is, for example, with an axial support in the form of a braided hose or with another also made of plastic sheathing.
  • FIG. 1 shows an exemplary cross section of a metal hose for the refrigerant pipe according to the invention in Figure 1.
  • a line section of a metal tube 1 is shown schematically in axial section with radially outermost wave crests 2 and radially inwardly lying wave crests 3.
  • the wall thickness S of the metal tube is marked in the region of the wave crests with S 3 , while the wall thickness in the area of the wave valleys with S 1 is marked.
  • the wall thickness in the region of the wave crests is greater than the wall thickness in the region of the wave troughs, that is to say S 3 > Sj.
  • the wavelength l_ w of the metal tube is indicated in the drawing, namely the distance between two axially adjacent same points, thus for example between two rising wave flanks, two wave crests etc.
  • This wavelength is expediently less than 3 mm and preferably between 1 , 5 and 2.5 mm, in the case of DN6 2.0 mm and in DN8 2.2 mm.
  • a refrigerant line is provided by the present invention, which combines the conflicting requirements in terms of mobility on the one hand and Druckpulsationsfestmaschine on the other hand in an advantageous manner by the metal hose of the air conditioning line is provided with different wall thicknesses, namely with a larger wall thickness in the wave crests than in the area of troughs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne une conduite de fluide frigorigène destinée à être employée dans des climatisations de véhicules, comportant un flexible métallique ondulé (1) présentant des crêtes radialement extérieures (2) et des creux radialement intérieurs (3). Le flexible métallique est optimisé en ce qui concerne sa résistance aux pulsations et sa mobilité du fait qu'il présente, au moins dans certaines zones de ses crêtes (2), une épaisseur supérieure (Sa) par rapport à l'épaisseur dans certaines zones de ses creux (3).
PCT/EP2006/007351 2005-08-06 2006-07-26 Conduite de fluide frigorigene WO2007017106A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06776410A EP1910725A1 (fr) 2005-08-06 2006-07-26 Conduite de fluide frigorigene

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005037165.5 2005-08-06
DE200510037165 DE102005037165A1 (de) 2005-08-06 2005-08-06 Kältemittelleitung

Publications (1)

Publication Number Publication Date
WO2007017106A1 true WO2007017106A1 (fr) 2007-02-15

Family

ID=37075697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/007351 WO2007017106A1 (fr) 2005-08-06 2006-07-26 Conduite de fluide frigorigene

Country Status (3)

Country Link
EP (1) EP1910725A1 (fr)
DE (1) DE102005037165A1 (fr)
WO (1) WO2007017106A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033907A1 (de) 2007-07-20 2009-01-22 Uhde High Pressure Technologies Gmbh Naturstoffextraktion

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03121393A (ja) * 1989-10-03 1991-05-23 Usui Internatl Ind Co Ltd 蛇腹管
US5143122A (en) * 1990-09-11 1992-09-01 Bundy Corporation Composite flexible conduit assembly
DE19908012A1 (de) * 1999-02-25 2000-09-07 Stenflex Rudolf Stender Gmbh Einrichtung zum Ausgleich der Bewegung zweier druckdicht zu verbindender Rohre
DE20313960U1 (de) * 2002-09-07 2003-11-13 S.M.A. Metalltechnik GmbH & Co. KG, 71522 Backnang Formschlauch
EP1536172A1 (fr) * 2002-09-06 2005-06-01 Ork Corporation Tube de soufflet en metal, procede de fabrication, et tube flexible pour fluide haute pression

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE528412C (de) * 1931-06-29 Berlin Karlsruher Ind Werke A Nahtloser metallischer Faltenbalg fuer hoehere Druecke
DE479942C (de) * 1929-07-25 Meyer Keller & Cie O Biegsame Leitung mit die Bruchsicherheit erhoehenden Verstaerkungen
US979460A (en) * 1909-05-05 1910-12-27 Weston M Fulton Flexible corrugated-metal wall for collapsible and expansible vessels.
US2187347A (en) * 1938-01-04 1940-01-16 Packless Metal Products Corp Flexible metallic hose
DE1772307U (de) * 1958-05-28 1958-08-14 Pforzheim Metallschlauch Wellrohr mit aussenmantel.
DE1804160U (de) * 1959-10-17 1960-01-14 Kloeckner Humboldt Deutz Ag Faltenbalg.
US3313319A (en) * 1964-08-25 1967-04-11 Dayco Corp Flexible hose
FR1457204A (fr) * 1964-12-11 1966-10-28 Pforzheim Metallschlauch Tuyau flexible pour très hautes pressions, en forme de tube à ondulations hélicoïdales avec armature de renforcement
US5492151A (en) * 1993-09-10 1996-02-20 Dayco Products, Inc. Vacuum cleaner hose and method and apparatus for making the same
JP2002005348A (ja) * 2000-06-22 2002-01-09 Fujikura Ltd 波付き電線管
JP3682213B2 (ja) * 2000-08-25 2005-08-10 小島プレス工業株式会社 蛇腹付ダクトの製造方法並びにそのためのブロー成形用金型

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03121393A (ja) * 1989-10-03 1991-05-23 Usui Internatl Ind Co Ltd 蛇腹管
US5143122A (en) * 1990-09-11 1992-09-01 Bundy Corporation Composite flexible conduit assembly
DE19908012A1 (de) * 1999-02-25 2000-09-07 Stenflex Rudolf Stender Gmbh Einrichtung zum Ausgleich der Bewegung zweier druckdicht zu verbindender Rohre
EP1536172A1 (fr) * 2002-09-06 2005-06-01 Ork Corporation Tube de soufflet en metal, procede de fabrication, et tube flexible pour fluide haute pression
DE20313960U1 (de) * 2002-09-07 2003-11-13 S.M.A. Metalltechnik GmbH & Co. KG, 71522 Backnang Formschlauch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033907A1 (de) 2007-07-20 2009-01-22 Uhde High Pressure Technologies Gmbh Naturstoffextraktion
WO2009012852A2 (fr) 2007-07-20 2009-01-29 Uhde High Pressure Technologies Gmbh Extraction de substances naturelles

Also Published As

Publication number Publication date
EP1910725A1 (fr) 2008-04-16
DE102005037165A1 (de) 2007-02-15

Similar Documents

Publication Publication Date Title
EP2159465B2 (fr) Tuyau flexible sous pression pour un système de transport d'eau, notamment pour le raccordement d'armatures sanitaires mobiles ou pour la liaison d'éléments du système de transport d'eau
EP1770250B1 (fr) Echangeur de chaleur pour tuyaux d'échappement
DE60102104T2 (de) Wärmetauscher und Wärmetauscherrohr dafür
DE69701710T2 (de) Verbundrohr mit einem gewickelten Kern
DE102011087176B4 (de) Rohrverbindung
DE112005001885T5 (de) Wärmetauscher, Zwischenwärmetauscher und Kältekreislauf
DE19614054A1 (de) Biegsame Rohranordnung
EP1467072B1 (fr) Elément de conduite flexible
DE10333533A1 (de) Befestigungsanordnung auf einem Endabschnitt eines Schlauchs mit metallischem Wellrohr
EP0561211B1 (fr) Tuyau souple agrafé
DE10244107B4 (de) Schlauchleitung und Verfahren zu deren Herstellung
DE202018004146U1 (de) Leitungselement mit Innenschlauch hoher Steifigkeit
EP1847752B1 (fr) Tube ondulé en matière synthétique thermoplastique
WO2007017106A1 (fr) Conduite de fluide frigorigene
WO2007017104A1 (fr) Conduite de fluide frigorigene
DE102006057199A1 (de) Verbundrohr mit zwei Polyvinylidenflurid-Schichten
EP1835216A1 (fr) Tuyau électriquement conducteur en plastique pour véhicule
DE10251549B3 (de) Mehrschichtiger flexibler Schlauch und Verfahren zu seiner Herstellung
EP2925463B2 (fr) Procédé de production d'une gaine multicouches, gaine et installation de climatisation équipée d'une telle gaine
EP2620683B1 (fr) Tuyau composite pour la technique de climatisation et d'aération
DE19922017C1 (de) Verfahren zur Herstellung einer Rohrleitung aus einem gas- und flüssigkeitsdichten, mit Wellungen versehenen Schlauch
WO2007017103A1 (fr) Conduite de fluide frigorigene
EP3667143B1 (fr) Tube de raccordement pour la technique de climatisation et d'aération
EP1927803A2 (fr) Elément de conduite flexible pour des conduites alimentées par pression interne
DE202007016256U1 (de) Flexibles Leitungselement für eine Abgasanlage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2006776410

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 2006776410

Country of ref document: EP