EP2135025A1 - Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediums - Google Patents
Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediumsInfo
- Publication number
- EP2135025A1 EP2135025A1 EP08715822A EP08715822A EP2135025A1 EP 2135025 A1 EP2135025 A1 EP 2135025A1 EP 08715822 A EP08715822 A EP 08715822A EP 08715822 A EP08715822 A EP 08715822A EP 2135025 A1 EP2135025 A1 EP 2135025A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- exchanger according
- inlet chamber
- chamber
- pass
- 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.)
- Granted
Links
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
-
- 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, in particular 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 in particular an evaporator, as used in particular for a heating or air conditioning system for motor vehicles, according to the preamble of claim 1.
- the invention in the following refers to the evaporator of a heating or air conditioning for motor vehicles, It should be noted that this purpose is not restrictive to understand, 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 the evaporator via an exit chamber.
- 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-stream evaporator extend beyond the tubesheet. Above the tube bottom a collecting space is provided. Distributor tubes are arranged in the bottom of this collecting space and are extended downwards in such a way that they project into the liquid space between the tubes of the falling-film evaporator. Thus, the tubes of the falling-film evaporator should be supplied evenly with an overflow liquid.
- DE 195 15 527 A1 shows an evaporator which has 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 construction of such evaporators is relatively complicated and therefore expensive.
- Advantageous embodiments are the subject of the dependent claims.
- a heat exchanger with at least one inlet chamber, at least one communicating with the inlet chamber, from a first medium, in particular a refrigerant, preferably R134a, R744 or other, through-flow and flowable by a second medium flow device for evaporation of a liquid Part of the first medium executed, wherein the inlet chamber is provided with at least one by-pass for a vaporous portion of the first medium to bypass the at least one flow device.
- a first medium in particular a refrigerant, preferably R134a, R744 or other
- 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.
- Fig. 1 is an exploded view of an embodiment of a heat exchanger according to the present invention
- FIG. 3 is an exploded view of another embodiment of a heat exchanger according to the present invention.
- Fig. 4 is a schematic perspective view of another embodiment of a heat exchanger according to the present invention.
- Fig. 1 shows a heat exchanger 1, in particular an evaporator for a motor vehicle air conditioner, 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 fed 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.
- heat-conducting fins preferably corrugated fins, are arranged, which are of a medium, preferably air L (indicated by an arrow), flowed around.
- 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 therefore first flows through a flow region 14, following the arrow B, and is then deflected through an intermediate chamber 13, which consists of a bottom plate 9, a deflection plate 10 and a closure plate 11, following the arrow C, and flows through a flow region 15 in the opposite direction, following the arrow D, in the collector 12.
- an intermediate chamber 13 which consists of a bottom plate 9, a deflection plate 10 and a closure plate 11, following the arrow C, and flows through a flow region 15 in the 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 outlet 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. In this case, the inlet chamber and outlet chamber are formed from formed sheets, the cross section of a chamber being preferably D-shaped. It is also possible that inlet chamber and outlet chamber are formed from a formed sheet metal.
- the collector is a component 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 to the outlet chamber at the end 19 of the inlet chamber opposite the inlet opening 18.
- 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 fluid quantity 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.
- FIGS. 2a to 2f show possible wiring variants of a heat exchanger according to the present invention.
- the heat exchanger has in each case four suction bores 17 and injection bores 16, each of which supplies one or more tubes.
- a heat exchanger has up to 45 injection holes and suction holes.
- the entry of the fluid F into the heat exchanger (represented by an arrow) and the exit of the fluid from the heat exchanger (represented by an arrow) can take place on the same side. It is also possible, depending on the operating conditions of the heat exchanger, to arrange the inlet and outlet of the fluid F advantageously on opposite sides of the heat exchanger.
- the by-pass 4 can connect the end of the inlet chamber with the output 20 of the heat exchanger according to FIG. 2a and FIG. 2b.
- the by-pass connects the end of the inlet chamber with a region of the refrigerant Krers- running, which lies between the output 20 of the heat exchanger and a pressure sink of the refrigerant circuit.
- the by-pass is tubular.
- three by-passes 4 are formed by crossovers to the outlet chamber. At least one passage is spaced from both ends of the inlet chamber.
- the crossings are designed as overflow channels or, in the case of adjacent pipes, as openings, which connect the inlet chamber and the outlet chamber in a communicating manner.
- Fig. 3 shows another embodiment of a heat exchanger according to the present invention.
- This heat exchanger has a similar construction to the heat exchanger according to FIG. 1.
- by-pass 4 is connected to an intermediate chamber 13 in this exemplary embodiment.
- Fig. 4 shows another embodiment of a heat exchanger according to the present invention.
- a heat exchanger is shown in multi-block connection.
- the fluid preferably a refrigerant
- the fluid 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 in order to evaporate here.
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)
Abstract
Description
Claims
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 (de) | 2007-03-15 | 2008-02-18 | Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediums |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2135025A1 true EP2135025A1 (de) | 2009-12-23 |
EP2135025B1 EP2135025B1 (de) | 2019-01-23 |
Family
ID=39323928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08715822.6A Not-in-force EP2135025B1 (de) | 2007-03-15 | 2008-02-18 | Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediums |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2135025B1 (de) |
CN (1) | CN101636629B (de) |
DE (1) | DE102007013125A1 (de) |
WO (1) | WO2008110249A1 (de) |
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 |
Family Cites Families (7)
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 |
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 EP EP08715822.6A patent/EP2135025B1/de not_active Not-in-force
- 2008-02-18 WO PCT/EP2008/001222 patent/WO2008110249A1/de active Application Filing
- 2008-02-18 CN CN2008800082220A patent/CN101636629B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008110249A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2135025B1 (de) | 2019-01-23 |
WO2008110249A1 (de) | 2008-09-18 |
CN101636629A (zh) | 2010-01-27 |
CN101636629B (zh) | 2011-06-22 |
DE102007013125A1 (de) | 2008-09-18 |
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Inventor name: GEIGER, MICHAEL PAUL Inventor name: SEEWALD, WOLFGANG Inventor name: KRANICH, MICHAEL Inventor name: WALTER, CHRISTOPH Inventor name: GNEITING, RONALD Inventor name: KERLER, BORIS |
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