EP1613916B1 - Wärmeübertrager - Google Patents

Wärmeübertrager Download PDF

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Publication number
EP1613916B1
EP1613916B1 EP04722294A EP04722294A EP1613916B1 EP 1613916 B1 EP1613916 B1 EP 1613916B1 EP 04722294 A EP04722294 A EP 04722294A EP 04722294 A EP04722294 A EP 04722294A EP 1613916 B1 EP1613916 B1 EP 1613916B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
cover
base
longitudinal
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.)
Expired - Lifetime
Application number
EP04722294A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1613916A2 (de
Inventor
Uwe FÖRSTER
Kurt Molt
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1613916A2 publication Critical patent/EP1613916A2/de
Application granted granted Critical
Publication of EP1613916B1 publication Critical patent/EP1613916B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0073—Gas coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the invention relates to a heat exchanger, in particular according to the preamble of claim 1.
  • a heat exchanger in particular according to the preamble of claim 1.
  • Such a dressingübartrager example from the US 2002/0074113 known.
  • Heat exchangers for air conditioners with R134a as a refrigerant consist of a heat exchanger network with flat tubes and corrugated fins as well as on both sides of the network arranged collecting tubes with preferably circular cross-section - as from DE-A 42 38 853 the applicant known.
  • Such constructions were sufficient in strength for the pressures occurring in a condenser.
  • newer refrigerants such as CO2
  • significantly higher pressures occur, which can no longer be controlled with the conventional construction methods for heat exchangers.
  • the condenser has flat tubes, which are received by a substantially flat, but profiled tube sheet in slot-shaped openings. With the tube sheet a substantially flat, but also profiled lid part is connected.
  • the bottom and cover form individual chambers divided by transverse walls, in which the refrigerant flows or is deflected. Although the bottom and lid are soldered together in the region of the tubes by inwardly directed impressions, this shaping of a collecting box for higher pressures, as they occur in particular in a CO2 refrigerant circuit, not suitable.
  • the collecting box is made of two embossed or bent sheet metal blanks, ie no machining is required. This results in low production costs. Furthermore, the embossing process of the sheet results in work hardening, which increases the internal pressure resistance of the collecting container.
  • longitudinal partitions with contact surfaces and transverse channels are formed both on the lid and on the ground, wherein the contact surfaces are each arranged between the tubes or the openings in the ground. When joining the lid and bottom, the contact surfaces lie flat on one another and thus form a large number of soldering surfaces in the region of the longitudinal dividing wall.
  • the end faces of the longitudinal channels can be closed, for example, by plugs, cover or end walls and optionally subsequently soldered, or they are provided with refrigerant connections.
  • a front-side closing of the longitudinal channels can also be done by a corresponding deformation of the lid and / or bottom by these are soldered together.
  • the flat tube ends, which protrude into the floor or collection box, are bridged in the region of the longitudinal dividing wall by the arc-shaped transverse channels, so that the refrigerant can emerge from the flat tubes over the entire cross-sectional area or can enter the flat tubes.
  • the contact surfaces on the inside of the collecting tank are formed as elevations and on the outside of the collecting tank as depressions or indentations, which correspond to depressions or indentations and elevations or manifestations in their position.
  • the transverse channels so the connections from a longitudinal chamber to other than depressions on the inside and are formed as projections on the outside.
  • the expression of the transverse channels on the inside ensures free outlet cross sections of the flat tubes and good solderability of the flat tube ends on the inside due to meniscus formation.
  • the wall thickness in the region of the longitudinal partitions of the bottom and lid is approximately constant, and preferably the elevations and depressions are formed symmetrically to a central dividing plane, wherein in a longitudinal section shows a trapezoidal contour.
  • the bottom in the edge region margins or cloth on. Cover and bottom are thus fixed over the strips or cloths, before they are soldered together with the entire heat exchanger.
  • three or more longitudinal chambers are provided with two or more longitudinal partitions, wherein the longitudinal partitions are formed analogous to the single longitudinal partition described above.
  • the collecting container according to the invention can also be used for larger flat tube depths without the longitudinal channels assuming too large a diameter. This results in advantages in the installation space and in the strength of the collecting container.
  • Fig. 1 shows a formed as a gas cooler 1 heat exchanger with a collecting box 2 and in these opening flat tubes 3, between which corrugated fins, not shown, can be arranged.
  • a gas cooler is used in operating with CO2 as a refrigerant refrigerant circuits for automotive air conditioning systems, but can also generally be used as a pressure-resistant heat exchanger.
  • Fig. 2 shows a side view of the gas cooler 1 with the collecting box 2, which is composed of a bottom 4 and a cover 5.
  • Base 4 and lid 5 are approximately W-shaped and symmetrical to a dividing plane 6 and arranged, wherein the bottom 4 edge strips 7, which surround the lid 5 laterally and fix.
  • Bottom 4 and cover 5 form two longitudinal channels 8, 9, both of which have a substantially circular cross-section.
  • the flat tubes 3 are received by the bottom 4 and protrude with their flat tube ends 3a in the longitudinal channels 8, 9 approximately to the division level 6 into it.
  • Bottom 4 and lid 5 are cut out of a sheet metal blank, not shown, and brought by embossing or bending in the illustrated form, ie produced without cutting. After joining the individual parts such as flat tubes 3, bottom 4 and cover 5, the entire gas cooler 1, which may have another collecting box, not shown, soldered.
  • Fig. 3 shows a front view of a section of the gas cooler 1, ie with a view towards the narrow sides of the flat tubes 3 and the continuous bar 7 of the bottom 4.
  • individual tabs may be provided, as this essentially only fixing function have the subsequent soldering process.
  • 3 corrugated ribs can be arranged between the flat tubes, which are overflowed by ambient air in the direction perpendicular to the plane of the drawing.
  • Fig. 4 shows a section along the line IV-IV in Fig. 3 , ie a cross section through the collecting box 2 with bottom 4, which receives a (not cut) flat tube 3. Between the two longitudinal channels 8, 9, a transverse channel 10 is arranged, which forms a passage.
  • Fig. 5 shows the collection box 2 in an enlarged view without the flat tube 3 with a slot-shaped opening 11 in the bottom 4 for receiving the flat tubes 3.
  • the collection box 2 has a dividing plane 6, to the bottom 4 and cover 5 with the exception of the edge strips. 7 and the receiving openings 11 are formed approximately symmetrical, in particular in the region of a longitudinal partition wall separating the two longitudinal channels, which is formed from a longitudinal partition wall portion 12 of the bottom 4 and a longitudinal partition wall portion 13 of the lid 5, which form superimposed contact surfaces 14, 15.
  • the superposed contact surfaces 14, 15 are each arranged between the flat tubes 3 and therefore lie behind the plane in which the Transverse channel 10 and - symmetrically to - another transverse channel 16 is located. Both transverse channels 10, 16 are complementary to a common passage cross-section.
  • Fig. 6 shows a section along the line VI-VI in Fig. 2 , ie in the region of the longitudinal dividing wall or the two longitudinal dividing wall regions 12, 13. The latter abut each other in the region of the dividing plane 6 with their contact surfaces 14, 15, which are each arranged between the flat tubes 3.
  • the contact surfaces 14, 15 in the bottom 4 and cover 5 are each formed as elevations or characteristics, which in each case a recess 17 in the lid or a recess 18 in the ground is opposite.
  • the transverse channels 10 in the lid 5 are formed by depressions on the inside, which elevations 19 in the lid are opposite; corresponding to the transverse channels 16 in the bottom 4 elevations 20 on the outside of the floor opposite.
  • the elevations and depressions results for the longitudinal partition walls 12, 13 of the bottom and lid each have a trapezoidal meandering profile with an approximately constant Ui / andches s. Since the elevations and depressions - as already mentioned - are produced by embossing, here results in a favorable fiber profile and a high work hardening, which is particularly advantageous for the absorption of tensile forces in this area.
  • Fig. 7 shows a cross section through the bottom 4
  • Fig. 7a shows a view of the bottom 4 from below
  • Fig. 7b shows a view of the bottom 4 from above.
  • the contact surfaces 14 can be seen, which are formed approximately rectangular. These contact surfaces 14 are located on the outside of the bottom 4 in Fig. 7a the depressions 18 opposite. The elevations on the outside of the soil are designated 20.
  • Fig. 8 shows the lid 5 in cross section
  • Fig. 8a shows a view of the Dekkels 5 from below
  • Fig. 8b shows a view of the lid 5 from above, ie the inside.
  • the indentations 17 are recognizable as rectangular areas, on which on the inside of the lid 5 (FIG. Fig. 8b ) the Contact surfaces 15 as surveys are opposite. Between the elevations 15, the transverse channels 10 extend.
  • the contact surfaces 14 ( Fig. 7b ) and the contact surfaces 15 ( Fig. 8b ) correspond approximately in size and position, are after the joining of the bottom 4 and cover 5 to each other and are soldered together in this area.
  • serving as the starting material sheet metal plates for bottom 4 and cover 5 may be solder-plated on both sides.
  • the basic material of the sheet metal blanks as well as the flat tubes 3 and optionally the corrugated fins is an aluminum alloy or various aluminum alloys.
  • Fig. 9 shows a further embodiment of the invention, namely a gas cooler 21, with a collecting box 22 and a series of flat tubes 23 which are received at the end of the collecting box 22.
  • Fig. 10 shows the collection box 22 in cross section without flat tube 23.
  • the collecting box 22 has three longitudinal channels 24, 25, 26, which are formed by a bottom 27 and a cover 28. In the bottom 27, a continuous slot 29 is introduced with the dimensions of the ends of the flat tubes 23, preferably by punching.
  • the longitudinal channels 24, 25, 26 are formed by two longitudinal dividing walls 30, 31, which are analogous to the above-described longitudinal dividing wall, consisting of longitudinal dividing wall areas of the bottom and lid formed.
  • transverse channels 32 and 33 are provided by depressions.
  • the illustration shows that the collection box according to the invention can be executed with any number of longitudinal channels, wherein in each case between two adjacent longitudinal channels, the contact surfaces according to the invention are provided for the formation of tie rods.
  • Fig. 11 shows a section of a manifold of a gas cooler 100 with the collection box 102, which is also called collection tube.
  • the collecting box is designed in two parts and is composed of a bottom 104 and a cover 105.
  • the lid 105 is thereby inserted into the ground. This is done so that the side arms of the bottom engage around the lid, so that side surfaces of the lid abut against inner surfaces of the bottom.
  • Lugs 135 are advantageously attached to the bottom, the Securing the lid in the ground before the soldering process are deformable.
  • dividing walls 134 may be inserted into openings of the lid, as inserted. These partitions can be secured by means of tabs.
  • the partitions are designed approximately B-shaped and are located on the contour of the soil.
  • the bottom 104 and the cover 105 form at least two, optionally also 3, 4 or more longitudinal channels, both of which have a substantially circular or oval cross-section.
  • the flat tubes 103 are received by the bottom 104 and protrude with their flat tube ends into the longitudinal channels approximately up to a dividing plane.
  • Bottom 104 and lid 105 are cut out of a sheet metal blank, not shown, and brought by embossing or bending in the illustrated shape, ie produced without cutting. But the manufacturing process can also be done in a different order, ie first the board is deformed and then the bottom or the lid is punched out. After joining the individual parts such as flat tubes 103, bottom 104 and cover 105, the entire gas cooler 1, which may still have another collection box, not shown, are soldered.
  • FIG. 12 shows a further embodiment of the invention, wherein the design of the bottom and lid is similar, compared to FIG. 11 , but in FIG. 12 Bottom and lid are reversed. That means that in FIG. 12 the lid surrounds the outside of the floor with its side arms and the tabs are formed on the arms of the lid. It is advantageous here that the tabs can come laterally to the tubes 103 to the plant or can be arranged between two tubes.
  • Both bottom and lid have two approximately semicircular areas which are connected by an approximately straight section. At the parts, such as bottom or lid, which surround the other part are provided approximately perpendicular to the central region aligned arms.
  • tabs 135 and other components can be connected, such as flanges or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP04722294A 2003-04-03 2004-03-22 Wärmeübertrager Expired - Lifetime EP1613916B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315371A DE10315371A1 (de) 2003-04-03 2003-04-03 Wärmeübertrager
PCT/EP2004/003016 WO2004088234A2 (de) 2003-04-03 2004-03-22 Wärmeübertrager

Publications (2)

Publication Number Publication Date
EP1613916A2 EP1613916A2 (de) 2006-01-11
EP1613916B1 true EP1613916B1 (de) 2010-11-17

Family

ID=32981038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04722294A Expired - Lifetime EP1613916B1 (de) 2003-04-03 2004-03-22 Wärmeübertrager

Country Status (8)

Country Link
US (1) US7578340B2 (pt)
EP (1) EP1613916B1 (pt)
JP (1) JP2006522306A (pt)
CN (1) CN1768244A (pt)
AT (1) ATE488742T1 (pt)
BR (1) BRPI0408578A (pt)
DE (2) DE10315371A1 (pt)
WO (1) WO2004088234A2 (pt)

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EP3074709B1 (en) 2013-11-25 2021-04-28 Carrier Corporation Dual duty microchannel heat exchanger
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WO2020108513A1 (zh) 2018-11-30 2020-06-04 浙江三花汽车零部件有限公司 一种换热装置
CN111256392B (zh) * 2018-11-30 2023-03-28 浙江三花汽车零部件有限公司 一种换热器
CN116358320A (zh) * 2018-11-30 2023-06-30 浙江三花汽车零部件有限公司 换热装置
WO2021234962A1 (ja) * 2020-05-22 2021-11-25 三菱電機株式会社 熱交換器
CN114393378B (zh) * 2022-01-13 2023-07-07 天津大起空调有限公司 二氧化碳气冷器集流管生产方法
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Also Published As

Publication number Publication date
DE10315371A1 (de) 2004-10-14
ATE488742T1 (de) 2010-12-15
DE502004011898D1 (de) 2010-12-30
JP2006522306A (ja) 2006-09-28
WO2004088234A2 (de) 2004-10-14
US7578340B2 (en) 2009-08-25
BRPI0408578A (pt) 2006-03-21
US20060266509A1 (en) 2006-11-30
WO2004088234A3 (de) 2005-01-06
EP1613916A2 (de) 2006-01-11
CN1768244A (zh) 2006-05-03

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