EP3671067B1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP3671067B1
EP3671067B1 EP18461645.6A EP18461645A EP3671067B1 EP 3671067 B1 EP3671067 B1 EP 3671067B1 EP 18461645 A EP18461645 A EP 18461645A EP 3671067 B1 EP3671067 B1 EP 3671067B1
Authority
EP
European Patent Office
Prior art keywords
opening
heat exchanger
distribution
central axis
distribution 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
EP18461645.6A
Other languages
German (de)
English (en)
Other versions
EP3671067A1 (fr
Inventor
Dawid Szostek
Karol POKRYWINSKI
Mateusz WOZEK
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 Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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 Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP18461645.6A priority Critical patent/EP3671067B1/fr
Priority to PL18461645.6T priority patent/PL3671067T3/pl
Priority to CN201980090446.9A priority patent/CN113710970B/zh
Priority to PCT/EP2019/085633 priority patent/WO2020127253A1/fr
Publication of EP3671067A1 publication Critical patent/EP3671067A1/fr
Application granted granted Critical
Publication of EP3671067B1 publication Critical patent/EP3671067B1/fr
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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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • 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
    • F28F9/0275—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 with multiple branch 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
    • 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
    • F28D2021/007—Condensers

Definitions

  • the invention relates to a heat exchanger.
  • a heat exchanger for the air conditioning system for example an air condenser, is usually constructed as a series of tubes interlaced with fins.
  • the heat absorbed by the refrigerant while it is flowing through the evaporator is released to the ambient, very much the same way the radiator releases the heat from engine coolant that the coolant absorbed while it was flowing through the engine.
  • the inlet of the condenser receives the refrigerant in the form of a high pressure and high temperature vapour. As the refrigerant cools down while traveling across the condenser, it turns from gaseous refrigerant into a liquid at high pressure.
  • Standard air condensers may be connected with the rest of the air conditioning system by use of connecting blocks.
  • Traditional block usually comprises one inlet opening and one outlet opening which enable refrigerant communication between the condenser and other elements of the air conditioning system.
  • traditional blocks may be unsatisfactory in terms of pressure drop and even refrigerant distribution.
  • Refrigerant entering the air condenser through the traditional block meets a big volume of collection chamber to be filled.
  • the refrigerant fluid may not be distributed into the collection chamber in an optimal way. This is one of the factors that leads to the undesired phenomena called pressure drop.
  • the heat exchanger comprises a connection block comprises at least one distribution opening, wherein its central axis is perpendicular to central axis of the first opening.
  • the heat exchanger comprises a connection block comprises at least one distribution opening, wherein its central axis is slanted to central axis of the first opening.
  • the heat exchanger comprises a connection block wherein a wall portion between at least two distribution openings, has rounded edges at the side facing the first opening.
  • the heat exchanger comprises a connection block wherein a wall portion between at least two distribution openings has sharp edges at the side facing the first opening.
  • the heat exchanger comprises a connection block wherein at least one of the distribution openings is at least partially reamed.
  • the heat exchanger comprises a connection block wherein at least one of the distribution openings has at least two different cross sections along its central axis.
  • a first cross-section has a bigger area than a second cross-section, wherein the first cross-section faces the first opening, or a first cross section has a bigger area than a second cross-section, wherein the first cross-section faces the collection chamber.
  • the heat exchanger comprises a connection block comprising at least three distribution openings, the central axes of which are parallel and aligned in series.
  • At least two distribution openings are aligned abreast.
  • Embodiments of the invention disclose a heat exchanger 1 for a motor vehicle, comprising a connection element between the heat exchanger 1 and refrigerant loop further, called a first connection block 30.
  • the heat exchanger is an air condenser for the air conditioning system. It may be a heat exchanger adapted to work in two modes of operation: in a cooling mode as a condenser and in heating mode as an evaporator.
  • the first connection block 30 and a second connection block 50 are explicitly distinguished, as they differ in terms of design.
  • the first connection block 30 is the subject of the invention and is described extensively throughout the specification.
  • the second connection block 50 is of different design, for example of a design known in the art, for example with a straightforward communication between an inlet and an outlet of the block.
  • a first collection chamber 20 and a second collection chamber 21 have also been distinguished for the sake of clarity and to enable description of possible deployment of the connection blocks 30, 50 on the collection chambers 20, 21, yet one shall consider both of collection chambers 20, 21 as interchangeable. For example, this may be the case if direction of the flow is envisaged to be reversed.
  • the refrigerant enters the heat exchanger 1 through the inlet side of the first connection block 30 and it is directed into a first collection chamber 20 to supply the refrigerant to the heat exchanger 1.
  • the refrigerant circulates between the first collection chamber 20 and the second collection chamber 21 through tubes 22.
  • the tubes 22 are connected in a fluidic manner with the collection chambers 20, 21.
  • the tubes 22 are interlaced in parallel to one another, optionally with fins 23 for increasing overall heat exchanger 1 efficiency.
  • Fig. 1 and Fig. 4A present an exemplary overview of the heat exchanger 1 comprising two connection blocks 30, 50, both assembled on the first collection chamber 20.
  • the first connection block 30 is configured to distribute the refrigerant to the first collection chamber 20.
  • the second connection block 50 is configured to collect refrigerant after it completes desired circulation path.
  • the first connection block 30 is assembled on the same first collection chamber 20 as the second connection block 50, which is adapted as an outlet of refrigerant from the heat exchanger 1.
  • connection blocks 30, 50 on the collection chambers 20,21 include, among others: an embodiment wherein the first connection block 30 is deployed on the first collection chamber 20 and the second connection block 50 is deployed on the second collection chamber 21, wherein the first connection block 30 performs a function of the inlet to the heat exchanger 1 and the second connection block 50 performs a function of the outlet from the heat exchanger 1 (see Fig 4B ); an embodiment wherein the first connection block 30 is deployed on one first collection chamber 20 and another first connection block 30 is deployed on the second collection chamber 21, wherein the first connection blocks 30 of the same kind perform a function of both inlet and outlet of the heat exchanger 1 (see Fig.
  • Figures 2A to 3B present detailed views of the first connection block 30.
  • the first connection block 30 has two distribution openings 41, 42 which are connected in a fluidic manner with the first opening 33. Distribution openings 41, 42 are also configured to be connected fluidicaly with the collection chambers 20,21.
  • the distribution openings 41, 42, 43 are primarily in a rounded shape, yet according to the embodiment presented in the Fig. 3B a form of an oblong is also envisaged. As a result of creating at least two adjacent distribution openings, a wall portion 36 is formed between them. Each wall portion 36 separates the stream of the refrigerant between at least two distribution openings 41, 42, 43. At least two distribution openings 41, 42, 43 in a form of an oblong are more preferable and favourable in terms of refrigerant distribution and lower pressure drop in collection chambers 20, 21, due to bigger cross-section area than a block with a single communication passage between openings in a form of a straight channel. As shown in Fig. 1 , Fig. 2B and Fig.
  • a wall portion 36 between at least two distribution openings may have sharp edges at the side facing the first opening 33.
  • a wall portion 36 between at least two distribution openings 41, 42 may have rounded edges at the side facing the first opening 33. Thanks to rounded edges of wall portion 36 at the side facing the first opening 33, the refrigerant may be directed into distribution openings 41, 42 in a more orderly manner.
  • FIG. 5A presents one example, where more than two distribution openings 41, 42, 43 are present.
  • a central axis of any opening is designated by a line formed by center points of all its cross -sections in its longitudinal direction.
  • a first connection block 30 comprising at least two distribution openings 41, 42, 43
  • central axis of at least one distribution opening 41c, 42c, 43c is parallel to central axis of the first opening 33c.
  • Fig. 2B and Fig. 5B disclose one first opening 33 connected fluidically with two distribution openings 41, 42.
  • the central axis of the first opening 33c is parallel to central axis of at least one distribution opening, in this case to all of them.
  • the central axis of at least one distribution opening 41c, 42c is perpendicular to central axis of the first opening 33c.
  • Fig. 6A discloses one first opening 33 connected fluidically with two distribution openings 41, 42.
  • the central axis of the first opening 33c is perpendicular to central axis of the distribution opening 41c.
  • central axis of the first opening 33c is also perpendicular to the central axis of the distribution opening 42c and the central axis distribution opening 41c is parallel to the central axis of the distribution opening 42c.
  • central axis of at least one distribution opening 41c, 42c is slanted with respect to central axis of the first opening 33c.
  • Slanted means that the angle between central axis of the first opening 33c and central axis of the distribution opening 42c is different than 90 degrees, 180 degrees or 270 degrees.
  • Fig. 6B discloses the first opening 33 connected fluidically with two distribution openings 41, 42.
  • the central axis of the first opening 33c is slanted to central axis of the distribution opening 42c.
  • central axis of the first opening 33c is parallel to the central axis of the distribution opening 41c and the central axis of the distribution opening 41c is slanted to the central axis of the distribution opening 42c.
  • central axis of at least one distribution opening 41c is parallel to central axis of the other distribution opening 42c. This embodiment is presented in the Fig. 2B .
  • central axis of at least one distribution opening 41c is perpendicular to central axis of the other distribution opening 43c. This embodiment is presented in the Fig 6A .
  • the central axis of at least one distribution opening 41c is slanted with respect to the central axis of the other distribution opening 42c.
  • This embodiment is presented in the Fig. 6B .
  • the distribution openings 41, 42 are adapted to distribute the refrigerant to the first collection chamber 20.
  • Fig. 2A and Fig. 2B distinguish the most basic form of distribution openings 41, 42, wherein a wall portion 36 has sharp edges at the side facing one of the collection chambers 20, 21, depending on the first connection block 30 location.
  • At least one of the distribution openings 41, 42 has at least two different cross -sections along its central axis 41c, 42c.
  • a first cross-section has a bigger area than a second cross-section, wherein the first cross-section faces the first opening 33.
  • a first cross-section has a bigger area than a second cross-section, wherein the first cross-section faces the collection chamber.
  • the exemplary embodiment is presented on the peripheral side of the distribution opening 41 in the Fig. 5B .
  • the distribution openings 41, 42 are of the certain, initially desired depth, where depth of the opening can be defined as the distance penetrated by the opening along its channel axial direction inside the connection block. However, it may be necessary to deploy the mounting points 34, 35 on the path of distribution channels. Depth of mounting points 34, 35 can be defined analogically to the opening depth. In one of embodiments of the invention, it is possible to reduce the initial depth of at least one of the distribution openings 41 in regard to the other, such that at least two distribution openings have different depth. The reduced depth of distribution opening 41 in comparison with the other distribution opening 42 is presented in the Fig. 2B and Fig.5B . The depth of the mounting point 34 presented in Fig. 2B represents an example, where the depth of the distribution opening 42 had to be reduced because it was not possible to replicate the depth of the other distribution opening 42.
  • the first connection block 30 comprises at least three distribution openings 41, 42, 43
  • central axes 41c, 42c, 43c of the distribution openings 41, 42, 43 are parallel and the distribution openings 41, 42, 43 are aligned in series, i.e. one can draw the straight line connecting the central points defined by the central axes 41c, 42c, 43c of each distribution opening 41, 42, 43 analogically as presented by the dashed line in the Fig.7A .
  • Dashed circular line in the Fig. 7A indicates the location of the first opening 33.
  • central axes 41c, 42c, 43c, 44c, of the distribution openings 41,42, 43, 44 are parallel and the distribution openings 41, 42, 43, 44 are aligned abreast, i.e. one can draw at least two parallel lines connecting the central points defined by the central axes 41c, 42c, 43c, 44c of each distribution opening 41, 42, 43, 44 analogically as presented in the cross sectional view in the Fig. 7B by the dashed lines. Dashed circular line in the Fig. 7A indicates location of the first opening 33.
  • connection first connection block 30 is preferably made from a solid aluminum block, due to its lightweight properties, processing capabilities and performance.
  • the first opening 33 can be drilled to desired depth in one of the transverse walls of the aluminum block.
  • the distribution openings 41, 42, 43 may then be drilled in the direction of the first opening 33, so that the openings are connected fluidically.
  • the mounting rails 39 can also be created by cutting out the material of solid aluminum block.
  • the mounting rails 39 enable the assembly of the first connection block 30 to the collection chamber 20, 21 by tight connection and brazing. Additionally, the mounting points 34, 35 can also be created where needed. Other methods of carrying out the first connection block 30 e.g. laser cutting, computer numerical control machining or casting should also be considered executable.
  • the first connection block 30 can assembled with one of the collection chambers 20, 21 using mounting rails 39 and two elements are brazed together.

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)
  • Air-Conditioning For Vehicles (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (12)

  1. Échangeur de chaleur (1) comprenant une première chambre de collecte (20) et un premier bloc de raccordement (30) raccordé à la première chambre de collecte (20), le bloc de raccordement comprenant une ouverture d'entrée/sortie pour un fluide d'échange de chaleur, le premier bloc de raccordement (30) comprenant au moins deux ouvertures de distribution (41, 42, 43) raccordées de façon fluidique à une première ouverture (33), les ouvertures de distribution s'ouvrant directement dans la première chambre de collecte (20), et au moins une ouverture de distribution (41, 42, 43) ayant la forme d'un oblong, caractérisé en ce qu'un axe central (41c, 42c, 43c) d'au moins une ouverture de distribution (41, 42, 43), en particulier de toutes les ouvertures de distribution (41, 42, 43), est parallèle à un axe central (33c) de la première ouverture (33), et au moins deux ouvertures de distribution (41, 42) ayant une profondeur différente.
  2. Échangeur de chaleur (1) selon la revendication 1, dans lequel un axe central (41c, 42c, 43c) d'au moins une ouverture de distribution (41, 42, 43) est perpendiculaire à l'axe central (33c) de la première ouverture (33) .
  3. Échangeur de chaleur (1) selon la revendication 1, dans lequel un axe central (41c, 42c, 43c) d'au moins une ouverture de distribution (41, 42, 43) est incliné par rapport à l'axe central (33c) de la première ouverture (33).
  4. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel une portion de paroi (36) entre au moins deux ouvertures de distribution (41, 42, 43, 44) a des bords arrondis au niveau du côté faisant face à la première ouverture (33) .
  5. Échangeur de chaleur (1) selon l'une quelconque des revendications 1 à 3, dans lequel une portion de paroi (36) entre au moins deux ouvertures de distribution (41, 42) a des bords aigus au niveau du côté faisant face à la première ouverture (33).
  6. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel au moins l'une des ouvertures de distribution (41, 42) est au moins partiellement alésée.
  7. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel au moins l'une des ouvertures de distribution (41, 42, 43) a au moins deux sections transversales différentes le long de son axe central (41c, 42c, 43c).
  8. Échangeur de chaleur (1) selon la revendication 7, dans lequel une première section transversale a une surface plus grande qu'une deuxième section transversale, la première section transversale faisant face à la première ouverture (33).
  9. Échangeur de chaleur (1) selon la revendication 7, dans lequel une première section transversale a une surface plus grande qu'une deuxième section transversale, la première section transversale faisant face à la chambre de collecte (20, 21).
  10. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, comprenant au moins trois ouvertures de distribution (41, 42, 43), dont les axes centraux (41c, 42c, 43c) sont parallèles et alignés en série.
  11. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, comprenant au moins deux ouvertures de distribution (41, 42) alignées l'une sur l'autre.
  12. Échangeur de chaleur (1) selon la revendication 1, dans lequel au moins une ouverture de distribution (41, 42, 43) a une forme ronde.
EP18461645.6A 2018-12-17 2018-12-17 Échangeur de chaleur Active EP3671067B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18461645.6A EP3671067B1 (fr) 2018-12-17 2018-12-17 Échangeur de chaleur
PL18461645.6T PL3671067T3 (pl) 2018-12-17 2018-12-17 Wymiennik ciepła
CN201980090446.9A CN113710970B (zh) 2018-12-17 2019-12-17 热交换器
PCT/EP2019/085633 WO2020127253A1 (fr) 2018-12-17 2019-12-17 Échangeur de chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18461645.6A EP3671067B1 (fr) 2018-12-17 2018-12-17 Échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP3671067A1 EP3671067A1 (fr) 2020-06-24
EP3671067B1 true EP3671067B1 (fr) 2022-07-20

Family

ID=64746501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18461645.6A Active EP3671067B1 (fr) 2018-12-17 2018-12-17 Échangeur de chaleur

Country Status (4)

Country Link
EP (1) EP3671067B1 (fr)
CN (1) CN113710970B (fr)
PL (1) PL3671067T3 (fr)
WO (1) WO2020127253A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05312492A (ja) * 1992-05-14 1993-11-22 Showa Alum Corp 熱交換器
JPH11230693A (ja) * 1998-02-17 1999-08-27 Showa Alum Corp 熱交換器
JP4640288B2 (ja) * 2005-12-09 2011-03-02 株式会社デンソー インタークーラ
FR2917820B1 (fr) * 2007-06-22 2009-08-21 Valeo Systemes Thermiques Bride de collecteur pour un echangeur de chaleur
CN101691981B (zh) * 2009-07-23 2011-12-07 三花丹佛斯（杭州）微通道换热器有限公司 具有改进的制冷剂流体分配均匀性的多通道换热器
CN201757545U (zh) * 2010-06-28 2011-03-09 赵敏 一种换热器
CN102313400A (zh) * 2011-07-21 2012-01-11 广东美的电器股份有限公司 微通道平行流换热器
US10094601B2 (en) * 2016-07-12 2018-10-09 Keihin Thermal Technology Corporation Condenser

Also Published As

Publication number Publication date
WO2020127253A1 (fr) 2020-06-25
CN113710970A (zh) 2021-11-26
EP3671067A1 (fr) 2020-06-24
CN113710970B (zh) 2023-08-11
PL3671067T3 (pl) 2023-01-16

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