EP0911595B1 - Wärmetauscher mit verbesserter Wärmeübertragung - Google Patents

Wärmetauscher mit verbesserter Wärmeübertragung Download PDF

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Publication number
EP0911595B1
EP0911595B1 EP98119689A EP98119689A EP0911595B1 EP 0911595 B1 EP0911595 B1 EP 0911595B1 EP 98119689 A EP98119689 A EP 98119689A EP 98119689 A EP98119689 A EP 98119689A EP 0911595 B1 EP0911595 B1 EP 0911595B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
openings
manifold
exchanger according
connecting pipe
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
EP98119689A
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English (en)
French (fr)
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EP0911595A1 (de
Inventor
Frédéric Bousquet
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.)
Valeo Climatisation SA
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Valeo Climatisation SA
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 Valeo Climatisation SA filed Critical Valeo Climatisation SA
Publication of EP0911595A1 publication Critical patent/EP0911595A1/de
Application granted granted Critical
Publication of EP0911595B1 publication Critical patent/EP0911595B1/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
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/454—Heat exchange having side-by-side conduits structure or conduit section
    • Y10S165/464—Conduits formed by joined pairs of matched plates
    • Y10S165/465—Manifold space formed in end portions of plates
    • Y10S165/466—Manifold spaces provided at one end only

Definitions

  • the invention relates to a heat exchanger for exchange heat between a first fluid and a second fluid, comprising a stack of mutually aligned pockets in a longitudinal direction, and having two boxes collectors mutually juxtaposed in one direction lateral, each formed by alignment, in the direction longitudinal, of entry or exit chambers belonging respectively to the different pockets, the manifolds being subdivided as a whole into at least three connecting pipes, connecting pipes that belong to the same manifold in succession in the longitudinal direction and not communicating directly between them, while in each connecting line the entry or exit rooms communicate with each other by openings in the walls of the pockets, pockets defining a route for the first fluid between an upstream connection pipe adjacent to a first longitudinal end of the stack and a downstream link adjacent to the second longitudinal end of the stack, passing alternately from a connection belonging to one of the manifolds to a connecting pipe belonging to the other manifold, via U-shaped paths, each of which connects between they the entry and exit chambers of the same pocket, the upstream and downstream connecting pipes being connected to
  • Such heat exchangers are known, for example, from document EP-A-0 702 201 and commonly used in as evaporators in air conditioning systems of the vehicle interior.
  • the pockets are each formed two stamped sheet metal plates in the form of bowls, of which the concavities are turned towards each other and which are mutually tightly connected at their periphery, the entry and exit rooms being delimited by bowl regions of greater depth than remaining regions, so as to reserve between two pockets neighboring, opposite said remaining regions, an interval for the passage of the second fluid in the lateral direction, and said openings being formed in the bottoms of the cuvettes, which are in tight mutual contact around the openings.
  • the two bowls of each pocket are in further tightly connected in a middle area of their width and over a substantial fraction of their length from a first end edge, the two branches of said path in U extending on either side of said central zone, as well as said deeper regions of bowls, arranged in the vicinity of said first end edge.
  • the object of the invention is to improve the characteristics of operation of these evaporators.
  • the invention relates in particular to a heat exchanger of the kind defined in the introduction, and provides that said tubing is eccentric with respect to said openings.
  • the illustrated evaporator intended for an air conditioning system of the passenger compartment of a motor vehicle, includes a multiple pockets 1 mutually stacked in one substantially horizontal longitudinal direction, and formed each of two stamped sheet metal plates cuvettes 2 and 3. These are identical to each other and have their concavities turned towards each other, either towards second and first ends respectively longitudinal 5, 4 of the stack.
  • Each bowl has a peripheral edge 6 situated in a vertical plane, and the peripheral edges 6 of the two bowls forming a pocket are mutually assembled in a fluid-tight manner, by soldering, to define the interior volume of the pouch.
  • Each bowl also has, at its upper part, two regions 7 of greater depth than that of the remaining region 8, the latter occupying most of the height of the bowl, below regions 7.
  • each bowl juxtaposed from left to right of the figures, define in each pocket an entry room and a room outlet for the refrigerant.
  • the entrance room and the outlet chamber of each pocket are separated one on the other by a tight junction zone 9 between the two halfway down the pocket, this junction area connecting to edge 6 at the upper end 10 of the pocket and extending down to the vicinity of the lower end of the cover so as to define in this one, in relation to the regions 8 of the basins, a journey in U for the fluid between the inlet chamber and the exit.
  • the bottom of each bowl is crossed, in each regions 7 of greater depth, through an opening 11 and the bottoms facing one another of a bowl 2 and of an adjacent 3 bowl are mutually linked so waterproof around the openings, by soldering.
  • the alignment of the inlet / outlet chambers located on the side left of the figures forms a manifold 16, and the alignment of the inlet / outlet chambers located on the side right forms a manifold 17.
  • the manifold 16 is subdivided by a transverse partition 18 into a connecting line 12 extending from this partition at the end 4 of the stack and a connecting pipe 14 extending from the bulkhead to the end 5.
  • a bulkhead transverse 19 further from the end 4 than the partition 18, separates the manifold 17 into a link 13 adjacent to the end 4 and a link 15 adjacent to the end 5.
  • End plates 20 and 21 are brazed to the bottom of the cups 2,3 located at the ends 4.5 of the stack respectively so to close the openings 11 of these bowls, and contribute to delimit the connecting pipes. Entrance / exit rooms forming a single connecting pipe communicate between them by the openings 11 of the bowls 2,3.
  • An inlet pipe 22 extends over the entire length of the connecting pipe 14 and crosses the end plate 21 and the intermediate partition 18, to which it is soldered, so as to put in communication the connecting line 12 with the part of the circuit refrigerant located upstream of the evaporator.
  • a outlet pipe 23 also passes through plate 21 and opens into the connecting pipe 15, so as to put this in communication with the downstream part of the circuit.
  • the refrigerant entering the connection line 12 through the tubing 22 then passes into the line of link 13, using U-shaped paths in parallel of a first group of covers. It is then transferred to the connecting pipe 14, via the paths at U of a second group of sleeves, then driving link 15, via the U-shaped paths of a third and last group of covers.
  • the fluid leaves finally the evaporator through the pipe 23.
  • the fluid receives heat of an air flow which crosses the evaporator horizontally from right to left, along arrow F1, passing through the intervals between the pockets next to the 8 regions of the bowls.
  • the tubing 22 is offset from the centers of the openings 11 of the bowls which define the manifold 16.
  • the tubing is shifted to the left, i.e. downstream by in relation to the air flow F1.
  • the outline of each opening 11 has an oval shape and is composed of two horizontal straight lines 30 and two semicircles 31 whose concavities are turned one towards the other and which are tangent to the segments 30.
  • the tubing 22 has an outside diameter equal to the diameter of the semicircles 31 and comes to rest on the edge of the openings it cross, and is brazed to this edge, over the entire length of the semicircle 31 located on the left.
  • the diameter of the tubing 22 is less than that of the semicircles 31, the contact then being substantially punctual.
  • the dotted line curve and the solid line curve respectively relate to the illustrated evaporator and to an evaporator different from this by the fact that the axis of the tubing 22 passes through the centers of the openings it crosses.
  • the curves of Figure 3 and those of Figure 4 respectively show the heat output exchanged in kW and the temperature of the outgoing air in ° C, depending on the air flow rate in kilograms / hour passing through the evaporator, the air temperature incoming being 30 ° C.
  • the arrangement according to the invention also improves the homogeneity heat exchange in the evaporator volume, and therefore the homogeneity of the distribution of temperature within the air flow leaving it, with attenuation of the phenomena of hot spots and points cold.
  • brazing of the tubing at the edges of the openings causes stiffening and reduction of operating noise.
  • the tubing can be partially offset from the centers of the openings without reaching the lateral ends thereof. She can be offset towards the middle of the width of the evaporator, and not outwards. It can be shifted to downstream with respect to the air flow, or transversely with compared to this one. It is not necessarily soldered to edge of openings.
  • the offset tubing according to the invention may be an outlet pipe in communication with the downstream link pipe. It is also possible to provide an odd number of connecting pipes, the inlet and the fluid outlet being carried out on the same side of the evaporator, left or right with reference to Figures 1 and 2.
  • the evaporator can also operate in one orientation in the space different from that described.

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  • 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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Claims (12)

  1. Wärmetauscher zum Wärmeaustausch zwischen einem ersten Fluid und einem zweiten Fluid, insbesondere Verdampfer für eine Fahrzeuginnenraumklimaanlage, umfassend einen Stapel aus Taschen (1), die wechselseitig in einer Längsrichtung ausgerichtet sind, wobei zwei Sammlergehäuse (16, 17) wechselseitig benachbart in einer Querrichtung vorgesehen sind, jeweils gebildet durch die Ausrichtung in der Längsrichtung von Eintritts- oder Austrittskammern, die jeweils zu den unterschiedlichen Taschen gehören, wobei die Sammlergehäuse unterteilt sind in ihrer Gesamtheit in zumindest drei Verbindungskanäle (12 - 15), wobei die Verbindungskanäle, die zu ein- und demselben Sammlergehäuse gehören, sich in der Längsrichtung aneinander anschließen und nicht unmittelbar miteinander kommunizieren, während in jedem Verbindungskanal die Eintritts- oder Austrittskammern wechselseitig über Öffnungen (11) kommunizieren oder miteinander in Verbindung stehen, ausgebildet in den Wandungen der Taschen, wobei die Taschen einen Pfad für das erste Fluid definieren zwischen einem flussaufwärtsliegenden Verbindungskanal (12), benachbart zu einem ersten Längsende (4) des Stapels, und einem flussabwärtsliegenden Verbindungskanal (15), benachbart zu dem zweiten Längsende (5) des Stapels, wobei das Fluid alternativ von einem Verbindungskanal, der zu einem der Sammlergehäuse gehört, zu einem Verbindungskanal, der zu dem anderen Sammlergehäuse gehört, unter Zwischenschaltung von U-Pfaden tritt, von denen jeder die Eintritts- und Austrittskammern ein- und derselben Tasche verbindet, wobei die flussaufwärtsliegenden und flussabwärtsliegenden Verbindungskanäle mit Eintrittsdurchgängen und Austrittsdurchgängen verbunden sind, die an dem einen (5) der Längsenden vorgesehen sind, und zwar der eine (15) direkt (23) und der andere (12) unter Zwischenschaltung einer Verrohrung (22), die die Öffnungen (11) des oder der Verbindungskanäle (14) durchquert, die zwischen diesem selben Ende (5) und dem anderen Verbindungskanal (12) zwischengelagert sind, dadurch gekennzeichnet, dass die Verrohrung mit Bezug auf die Öffnungen exzentrisch vorliegt.
  2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die Verbindungskanäle bei einer gleichen Anzahl in den zwei Sammlergehäusen vorgesehen sind, wobei die flussaufwärtsliegenden (12) und flussabwärtsliegenden (15) Verbindungskanäle jeweils zu zwei Sammlergehäusen (16, 17) gehören.
  3. Wärmetauscher nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Öffnungen länglich sind, wobei die Verrohrung in der Richtung ihrer Länge versetzt mit Bezug auf die Mitten der Öffnungen vorliegt.
  4. Wärmetauscher nach Anspruch 3, dadurch gekennzeichnet, dass die Öffnungen länglich in der Querrichtung sind, wobei die Verrohrung hin zu dem Äußeren des Tauschers mit Bezug auf die Mitten der Öffnungen vorliegt.
  5. Wärmetauscher nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Verrohrung mit dem Rand von jeder Öffnung in Berührung steht.
  6. Wärmetauscher nach Anspruch 5, abhängig von einem der Ansprüche 3 und 4, dadurch gekennzeichnet, dass die Verrohrung mit dem Rand von jeder Öffnung im wesentlichen an dem Punkt davon in Berührung steht, der am stärksten von der Mitte beabstandet ist.
  7. Wärmetauscher nach Anspruch 6, dadurch gekennzeichnet, dass die Verrohrung über einen kreisförmigen Schnitt verfügt, der teilweise mit einem im wesentlichen halbkreisförmigen Abschnitt (31) des Randes der Öffnung zusammenfällt.
  8. Wärmetauscher nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Verrohrung (22) den flussaufwärtsliegenden Verbindungskanal (12) speist.
  9. Wärmetauscher nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Verrohrung mit den Rändern der Öffnungen verlötet ist.
  10. Wärmetauscher nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Längs- und Querrichtungen im wesentlichen horizontal verlaufen, wobei die Sammlergehäuse am oberen Abschnitt des Tauschers angeordnet sind.
  11. Wärmetauscher nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Taschen jeweils gebildet sind aus zwei in Schalenform geprägten Blechplatten (2, 3), deren Krümmung oder Konkavität zueinander gerichtet ist, und die jeweils in dichtender Weise an ihrer Peripherie (6) verbunden sind, wobei die Eingangs- und Austrittskammern von Bereichen (7) von Schalen mit größerer Tiefe begrenzt sind als die verbleibenden Abschnitte (8), so dass zwischen zwei benachbarten Taschen, gegenüberstehend den verbleibenden Abschnitten ein Intervall für den Durchtritt des zweiten Fluides in der Querrichtung verbleibt, wobei die Öffnungen in den Böden der Schalen ausgebildet sind, die wechselseitig in dichtendem Kontakt herum um die Öffnungen stehen.
  12. Wärmetauscher nach Anspruch 11, dadurch gekennzeichnet, dass die zwei Schalen bzw. Küvetten von jeder Tasche ferner in dichtender Weise mit einer mittleren Zone (9) ihrer Breite und an einem nennenswerten Teil ihrer Länge, ausgehend von einem ersten Endrand (10), verbunden sind, wobei die zwei Zweige des U-Pfades sich beidseitig der Mittelzone erstrecken, wie auch die Bereiche (7) mit größerer Tiefe der Schalen, die benachbart zu dem ersten Endrand angeordnet sind.
EP98119689A 1997-10-20 1998-10-19 Wärmetauscher mit verbesserter Wärmeübertragung Expired - Lifetime EP0911595B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9713117 1997-10-20
FR9713117A FR2769974B1 (fr) 1997-10-20 1997-10-20 Evaporateur a capacite d'echange de chaleur amelioree

Publications (2)

Publication Number Publication Date
EP0911595A1 EP0911595A1 (de) 1999-04-28
EP0911595B1 true EP0911595B1 (de) 2001-11-21

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EP98119689A Expired - Lifetime EP0911595B1 (de) 1997-10-20 1998-10-19 Wärmetauscher mit verbesserter Wärmeübertragung

Country Status (9)

Country Link
US (1) US6129144A (de)
EP (1) EP0911595B1 (de)
CN (1) CN1167931C (de)
BR (1) BR9804010A (de)
CZ (1) CZ290782B6 (de)
DE (1) DE69803265T2 (de)
ES (1) ES2163835T3 (de)
FR (1) FR2769974B1 (de)
ZA (1) ZA989507B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6321562B1 (en) * 1999-06-29 2001-11-27 Calsonic Kansei Corporation Evaporator of automotive air-conditioner
CA2323026A1 (en) * 2000-10-10 2002-04-10 Long Manufacturing Ltd. Heat exchangers with flow distributing orifice partitions
FR2825793B1 (fr) 2001-06-07 2003-09-05 Valeo Climatisation Evaporateur a plaques presentant un trajet de fuite pour le fluide refrigerant
FR2825792B1 (fr) 2001-06-07 2004-01-23 Valeo Climatisation Evaporateur fournissant une homogeneite de temperature amelioree pour boucle de climatisation de vehicule
FR2826439B1 (fr) * 2001-06-26 2003-10-03 Valeo Climatisation Echangeur de chaleur, en particulier evaporateur, a perfermances ameliores
CN1300530C (zh) * 2002-02-28 2007-02-14 昭和电工株式会社 蒸发器和制冷循环回路
CA2381214C (en) * 2002-04-10 2007-06-26 Long Manufacturing Ltd. Heat exchanger inlet tube with flow distributing turbulizer
US7044200B2 (en) * 2004-02-26 2006-05-16 Carrier Corporation Two-phase refrigerant distribution system for multiple pass evaporator coils
FR2924792A1 (fr) * 2008-04-17 2009-06-12 Valeo Vymeniky Tepla Echangeur de chaleur a faisceau de canaux en u avec tubulure d'injection.
US9033030B2 (en) * 2009-08-26 2015-05-19 Munters Corporation Apparatus and method for equalizing hot fluid exit plane plate temperatures in heat exchangers
JP2016031174A (ja) * 2014-07-28 2016-03-07 荏原冷熱システム株式会社 冷凍機

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Publication number Priority date Publication date Assignee Title
US3976128A (en) * 1975-06-12 1976-08-24 Ford Motor Company Plate and fin heat exchanger
US4217953A (en) * 1976-03-09 1980-08-19 Nihon Radiator Co. Ltd. (Nihon Rajiecta Kabushiki Kaisha) Parallel flow type evaporator
US4274482A (en) * 1978-08-21 1981-06-23 Nihon Radiator Co., Ltd. Laminated evaporator
JPS6155596A (ja) * 1984-08-24 1986-03-20 Showa Alum Corp 熱交換器
JP2936775B2 (ja) * 1991-04-05 1999-08-23 株式会社デンソー 熱交換器
JPH0566073A (ja) * 1991-09-05 1993-03-19 Sanden Corp 積層型熱交換器
JP3044440B2 (ja) * 1993-10-22 2000-05-22 株式会社ゼクセル 積層型エバポレータ
KR100353020B1 (ko) * 1993-12-28 2003-01-10 쇼와 덴코 가부시키가이샤 적층형열교환기
JPH07294160A (ja) * 1994-04-28 1995-11-10 Zexel Corp 片タンク構造の積層型熱交換器
JPH08114393A (ja) * 1994-08-25 1996-05-07 Zexel Corp 積層型熱交換器
EP0702201A1 (de) * 1994-09-14 1996-03-20 General Motors Corporation Gewalzter Wärmetauscherkern mit innen-mündender Zufuhrleitung

Also Published As

Publication number Publication date
ES2163835T3 (es) 2002-02-01
CN1167931C (zh) 2004-09-22
US6129144A (en) 2000-10-10
FR2769974B1 (fr) 2000-01-07
DE69803265T2 (de) 2002-08-08
EP0911595A1 (de) 1999-04-28
CN1216818A (zh) 1999-05-19
ZA989507B (en) 1999-04-20
CZ337798A3 (cs) 2000-01-12
FR2769974A1 (fr) 1999-04-23
CZ290782B6 (cs) 2002-10-16
DE69803265D1 (de) 2002-02-21
BR9804010A (pt) 2000-02-29

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