EP2135025B1 - Échangeur de chaleur pour la vaporisation d'une partie liquide d'un milieu, pourvu d'une dérivation pour une partie à l'état de vapeur du milieu - Google Patents
Échangeur de chaleur pour la vaporisation d'une partie liquide d'un milieu, pourvu d'une dérivation pour une partie à l'état de vapeur du milieu Download PDFInfo
- Publication number
- EP2135025B1 EP2135025B1 EP08715822.6A EP08715822A EP2135025B1 EP 2135025 B1 EP2135025 B1 EP 2135025B1 EP 08715822 A EP08715822 A EP 08715822A EP 2135025 B1 EP2135025 B1 EP 2135025B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- chamber
- inlet chamber
- inlet
- medium
- 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.)
- Not-in-force
Links
Images
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
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/022—Evaporators with plate-like or laminated elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
-
- 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
- F28F9/0278—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 stacked distribution plates or perforated plates arranged over end plates
-
- 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
-
- 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
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0085—Evaporators
Definitions
- the invention relates to a heat exchanger as an evaporator, as used in particular for a heating or air conditioning system for motor vehicles, according to the preamble of claim 1.
- a heat exchanger is off FR 1 510 961 known.
- the invention hereinafter refers to the evaporator of a heating or air conditioning system for motor vehicles, it should be noted that this purpose is not restrictive, but that the heat exchanger according to the invention can also be used in other air conditioning systems and the like.
- Heat exchangers are known in which the two-phase refrigerant is distributed from an inlet chamber to a flow-through device, preferably tubes, in particular flat tubes. After flowing through the flat tubes, the vaporous refrigerant exits through an outlet chamber from the evaporator.
- the uniform distribution of the liquid refrigerant in the entire length of the inlet chamber presents difficulties.
- the reason for this is among other things the formation of different flow forms depending on the operating condition.
- the segregation of the two-phase refrigerant mixture which is homogeneous at the time of evaporator entry also plays a special role over the length of the inlet chamber. Individual pipes are thus supplied exclusively with refrigerant vapor, whereby the evaporator performance deteriorates.
- the tubes of a falling-film evaporator extend beyond the tubesheet.
- a collecting space is provided above the tube bottom.
- this collecting space distribution pipes are arranged, which are extended downwards so that they protrude into the liquid space between the tubes of the falling-film evaporator.
- the DE 195 15 527 A1 shows an evaporator having a distributor which divides the refrigerant via an output-side flow connection to the inlet openings of a plurality of parallel connected flat tubes.
- the flow connection which consists of a plurality of channels, opens into a housing which forms a plurality of closed chambers by inserted partitions.
- the FR 1 510 961 B discloses a radiator in which a by-pass between the inlet-side header tank and the outlet-side header tank.
- a heat exchanger with at least one inlet chamber, at least one communicating with the inlet chamber, of a first medium as a refrigerant, preferably R134a, R744 or other, can be flowed through and flowed around by a second medium flow device for evaporation of a liquid part of the first medium, wherein the inlet chamber is provided with at least one by-pass for a vaporous part of the first medium to bypass the at least one flow-through device.
- the hydraulic diameter of the by-pass opening is preferably determined so that, largely independent of the load case, the vapor phase is withdrawn from the inlet chamber.
- the bypass is connected to an outlet chamber, so that the vapor phase can be sucked directly from the evaporator.
- Such a configuration additionally reduces the refrigerant side pressure loss via the flow device and thus increases the performance of the evaporator.
- At least one by-pass is provided with a valve, so that a load-case-dependent adjustment of the hydraulic diameter of the by-pass can be realized because with a solid by-pass cross-section sometimes there is a risk that some liquid drops be carried away.
- At least one by-pass is connected to an intermediate chamber, so that drops of liquid entrained by the by-pass are nevertheless vaporized and thus contribute to increasing the cooling capacity.
- At least one by-pass is tubular.
- the inlet chamber has at least one by-pass at one end.
- At least one by-pass is spaced from both ends.
- the medium flowing through the throughflow device is a refrigerant, preferably R744, R134a or others.
- the flow-through device consists of tubes, in particular flat tubes.
- Heat exchanger according to one of the preceding claims, characterized in that the flow-through device consists of discs.
- ribs preferably corrugated ribs, are arranged between the tubes and / or discs.
- the inlet chamber and / or the outlet chamber and / or the intermediate chamber is formed as a tube and / or as a box.
- Fig. 1 shows a heat exchanger 1, in particular an evaporator for an automotive air conditioning system, according to an embodiment of the present invention in an exploded view.
- a heat exchanger has at least one inlet chamber 2, via which the refrigerant is supplied to the evaporator from a refrigerant circuit, not shown, via an inlet opening 18 (indicated by arrow A).
- the inlet chamber 2 is elongate and bounded by two ends.
- the inlet opening 18 is positioned at one end of the inlet chamber.
- the inlet opening can be positioned at a distance from both ends.
- the heat exchanger 1 has a collector 12, which consists of an injection plate 5, a distributor plate 6 and a bottom plate 7.
- a collector 12 which consists of an injection plate 5, a distributor plate 6 and a bottom plate 7.
- the refrigerant to the tubes 8 preferably flat tubes, which are designed for example as a multi-chamber tubes supplied.
- the flow device 8 consists of discs.
- the tubes 8 protrude into the inlet chamber in order to achieve an even liquid distribution to the tubes in an overflow.
- Thermally conductive ribs preferably corrugated ribs, are arranged between the tubes and can be flowed around by a medium, preferably air L (indicated by an arrow).
- the tubes, as well as the holes of the bottom plate 7 are divided in the middle by a web (not shown), so that two flow regions 14 and 15 are formed, which passes through the refrigerant in the opposite direction.
- the refrigerant flows through first, following the arrow B, a flow region 14, is then through an intermediate chamber 13, which consists of a bottom plate 9, a baffle plate 10 and a cover plate 11, following the arrow C, deflected and flows through a flow region 15 in opposite direction, following the arrow D, in the collector 12,
- the flow area 15 of the inflowing air L faces.
- injection holes 16 are provided in the injection plate 5 of the collector 12 , so that the refrigerant from the inlet chamber 2 can flow into the flow area 14. Furthermore, suction holes 17 are provided in the injection plate 2, so that the refrigerant can flow from the flow area 15 into the discharge chamber 3. About the outlet chamber 3, the refrigerant then passes into a refrigerant circuit, not shown (shown by arrow E).
- the injection and / or suction bores can be provided in the injection plate and / or inlet chamber.
- the inlet chamber 2 and / or the outlet chamber 3 are designed as a tube. It is also possible to carry out the inlet chamber and / or the outlet chamber as a box.
- the inlet chamber and outlet chamber are formed from formed sheets, wherein the cross-section of a chamber is preferably D-shaped. It is also possible that inlet chamber and outlet chamber are formed from a formed sheet metal.
- the collector is a part of the inlet chamber and / or the outlet chamber.
- the inlet chamber and the outlet chamber is arranged on the same side of the heat exchanger.
- the heat exchanger 1 has a by-pass 4 between inlet chamber 2 and outlet chamber 3. According to Fig. 1 the By-pass is connected at the inlet 19 opposite the inlet end 18 of the inlet chamber to the outlet chamber.
- the hydraulic diameter of the by-pass is set such that, largely independent of the load case of the heat exchanger, the vapor phase is withdrawn from the inlet chamber and the liquid phase is fed to the tubes 8.
- the load case (for example, full load or partial load) provides information about the operating point of a heat exchanger and thus about the injected amount of fluid in the heat exchanger.
- the by-pass is provided with a valve that can adjust the hydraulic diameter of the by-pass depending on the load.
- FIG. 2a to 2c, 2e and 2f are not possible Verschaltungstinen invention of a heat exchanger and in Figure 2d an interconnection variant according to the invention is shown according to the present invention.
- the heat exchanger in the embodiments 2a to 2f each have four suction holes 17 and injection holes 16, each supplying one or more tubes on.
- a heat exchanger has up to 45 injection holes and suction holes.
- the by-pass 4 can according to Fig. 2a and Fig. 2b connect the end of the inlet chamber to the outlet 20 of the heat exchanger.
- the by-pass connects the end of the inlet chamber with a portion of the refrigerant circuit, which is located between the output 20 of the heat exchanger and a pressure sink of the refrigerant circuit.
- three By-pass 4 are formed by crossover to the exit chamber. At least one passage is spaced from both ends of the inlet chamber.
- the crossover are formed as overflow or in adjacent pipes as openings, which connect the inlet chamber and outlet chamber communicating.
- Fig. 3 shows an example of a heat exchanger.
- This heat exchanger is constructed similar to the heat exchanger according to Fig. 1 , However, by-pass 4 is connected to an intermediate chamber 13 in this embodiment.
- by-pass 4 is connected to an intermediate chamber 13 in this embodiment.
- Fig. 4 shows a further non-inventive embodiment of a heat exchanger.
- a heat exchanger is shown in Mehrblockverscnies.
- the fluid preferably a refrigerant, is deflected at least twice, preferably several times.
- a liquid phase entrained with the gas phase is withdrawn through the by-pass 4 from the 3rd block and returned to the 6th block to evaporate therein.
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)
Claims (10)
- Echangeur de chaleur (1) comprenant au moins une chambre d'entrée (2), au moins un dispositif de flux en circulation (8) relié à la chambre d'entrée en communiquant avec elle, ledit dispositif de flux en circulation étant traversé par un premier milieu et baigné par un second milieu, où au moins une dérivation relie la chambre d'entrée à la chambre de sortie (3), en communiquant avec elles, où l'échangeur de chaleur est conçu pour un évaporateur, les dispositifs de flux en circulation étant prévus pour une évaporation d'une partie liquide du premier milieu, la chambre d'entrée (2) étant dotée de la dérivation (4), au moins au nombre de un, prévue pour une partie - à l'état de vapeur - du premier milieu, ladite dérivation servant au contournement du dispositif de flux en circulation au moins au nombre de un, et où la chambre d'entrée et la chambre de sortie sont disposées sur le même côté de l'échangeur de chaleur, où la chambre d'entrée est configurée de façon allongée et en ayant deux extrémités, caractérisé en ce qu'au moins une dérivation est disposée au niveau de l'extrémité la plus éloignée de l'entrée de la chambre d'entrée.
- Echangeur de chaleur selon la revendication 1, caractérisé en ce qu'au moins une dérivation est configurée comme une percée dans la chambre d'entrée.
- Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce qu'au moins une dérivation présente une soupape.
- Echangeur de chaleur selon la revendication 3, caractérisé en ce qu'une adaptation du diamètre hydraulique de la dérivation, effectuée en fonction de la chute de charge, est réalisable grâce à la soupape.
- Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les tubes sont emboîtés dans la chambre d'entrée.
- Echangeur de chaleur selon la revendication 5, caractérisé en ce que les tubes pénètrent à l'intérieur de la chambre d'entrée avec ou sans dépassement par rapport à celle-ci.
- Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un collecteur relie la chambre d'entrée et / ou de sortie au dispositif de flux en circulation.
- Echangeur de chaleur selon la revendication 7, caractérisé en ce que la chambre d'entrée et / ou de sortie est un composant du collecteur.
- Echangeur de chaleur selon la revendication 7, caractérisé en ce que la chambre d'entrée et / ou de sortie est reliée au collecteur en communiquant avec lui par des perçages.
- Echangeur de chaleur selon la revendication 9, caractérisé en ce que les perçages sont disposés dans le collecteur et / ou dans la chambre d'entrée et / ou dans la chambre de sortie.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710013125 DE102007013125A1 (de) | 2007-03-15 | 2007-03-15 | Wärmeübertrager |
PCT/EP2008/001222 WO2008110249A1 (fr) | 2007-03-15 | 2008-02-18 | Échangeur de chaleur pour la vaporisation d'une partie liquide d'un milieu, pourvu d'une dérivation pour une partie à l'état de vapeur du milieu |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2135025A1 EP2135025A1 (fr) | 2009-12-23 |
EP2135025B1 true EP2135025B1 (fr) | 2019-01-23 |
Family
ID=39323928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08715822.6A Not-in-force EP2135025B1 (fr) | 2007-03-15 | 2008-02-18 | Échangeur de chaleur pour la vaporisation d'une partie liquide d'un milieu, pourvu d'une dérivation pour une partie à l'état de vapeur du milieu |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2135025B1 (fr) |
CN (1) | CN101636629B (fr) |
DE (1) | DE102007013125A1 (fr) |
WO (1) | WO2008110249A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008060699A1 (de) | 2008-12-08 | 2010-06-10 | Behr Gmbh & Co. Kg | Verdampfer für einen Kältekreis |
JP5951381B2 (ja) * | 2012-07-17 | 2016-07-13 | カルソニックカンセイ株式会社 | 蒸発器構造 |
DK201570883A1 (en) * | 2015-12-29 | 2017-04-18 | Dantherm Cooling As | Heat Transfer System or Element with Fewer or No Headers |
DE202016004934U1 (de) * | 2016-08-13 | 2017-11-14 | Consolar Solare Energiesysteme Gmbh | Photovoltaik-Thermie-Modul mit Luft-Wärmeübertrager |
CN107764082A (zh) * | 2016-08-18 | 2018-03-06 | 浙江盾安热工科技有限公司 | 一种微通道换热器 |
CN106352719A (zh) * | 2016-11-17 | 2017-01-25 | 郑州网知汇知识产权代理服务有限公司 | 一种新型微通道换热器 |
CN107367190B (zh) * | 2017-08-31 | 2023-07-04 | 珠海格力电器股份有限公司 | 分集流体接头集成组件、风机盘管换热器及空调系统 |
DE102018214871A1 (de) * | 2018-08-31 | 2020-03-05 | Mahle International Gmbh | Wärmepumpenheizer |
CN113787881B (zh) * | 2021-11-12 | 2022-02-08 | 新乡市华正散热器有限公司 | 一种暖风散热器 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1510961A (fr) * | 1966-12-12 | 1968-01-26 | Ferodo Sa | Perfectionnement aux échangeurs thermiques, notamment pour la climatisation des véhicules automobiles |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2436733B2 (de) | 1974-07-30 | 1976-08-12 | Industrieprojekt AG, Zürich (Schweiz) | Vorrichtung zur gleichmaessigen verteilung von einzudampfenden fluessigkeiten in einem fallstromverdampfer |
CN2199889Y (zh) * | 1994-07-19 | 1995-06-07 | 施杰 | 扩散-吸收式车用余热空调器 |
US5806585A (en) * | 1995-02-27 | 1998-09-15 | Mitsubishi Denki Kabushiki Kaisha | Heat exchanger, refrigeration system, air conditioner, and method and apparatus for fabricating heat exchanger |
DE19515527A1 (de) | 1995-04-27 | 1996-10-31 | Thermal Werke Beteiligungen Gm | Verdampfer in Flachrohr- oder Plattenbauweise für den Kältemittelkreislauf einer Kraftfahrzeugklimaanlage |
DE10312780A1 (de) * | 2003-03-21 | 2004-11-25 | Behr Gmbh & Co. Kg | Wärmetauscher |
JP2004333065A (ja) * | 2003-05-09 | 2004-11-25 | Showa Denko Kk | 蒸発器、冷凍システム、そのシステムを備えた車両及び冷媒の蒸発方法 |
-
2007
- 2007-03-15 DE DE200710013125 patent/DE102007013125A1/de not_active Withdrawn
-
2008
- 2008-02-18 WO PCT/EP2008/001222 patent/WO2008110249A1/fr active Application Filing
- 2008-02-18 CN CN2008800082220A patent/CN101636629B/zh not_active Expired - Fee Related
- 2008-02-18 EP EP08715822.6A patent/EP2135025B1/fr not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1510961A (fr) * | 1966-12-12 | 1968-01-26 | Ferodo Sa | Perfectionnement aux échangeurs thermiques, notamment pour la climatisation des véhicules automobiles |
Also Published As
Publication number | Publication date |
---|---|
CN101636629A (zh) | 2010-01-27 |
WO2008110249A1 (fr) | 2008-09-18 |
EP2135025A1 (fr) | 2009-12-23 |
DE102007013125A1 (de) | 2008-09-18 |
CN101636629B (zh) | 2011-06-22 |
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