EP4356060A1 - Dispositif de transfert de chaleur - Google Patents

Dispositif de transfert de chaleur

Info

Publication number
EP4356060A1
EP4356060A1 EP22735294.5A EP22735294A EP4356060A1 EP 4356060 A1 EP4356060 A1 EP 4356060A1 EP 22735294 A EP22735294 A EP 22735294A EP 4356060 A1 EP4356060 A1 EP 4356060A1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
flow
heat exchanger
transfer device
transfer 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.)
Pending
Application number
EP22735294.5A
Other languages
German (de)
English (en)
Inventor
Ulrich Hafner
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.)
Viessmann Holding International GmbH
Original Assignee
Viessmann Climate Solutions SE
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 Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Publication of EP4356060A1 publication Critical patent/EP4356060A1/fr
Pending legal-status Critical Current

Links

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
    • 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
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B39/028—Evaporators having distributing means
    • 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
    • F25B39/04—Condensers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • 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
    • F28F9/0273—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 holes

Definitions

  • the invention relates to a heat transfer device according to the preamble of patent claims 1 and 15.
  • a heat transfer device of the type mentioned at the beginning is generally known, so that no special printed proof is required in this regard.
  • Such a heat transfer device consists of a heat exchanger through which a heat transfer medium flows, a first central connection for supplying or removing the heat transfer medium to or from the heat exchanger, a second central connection for removing or supplying the heat transfer medium 15 from or to the heat exchanger and several, the heat exchanger forming heat transfer channels which are hydraulically connected on the one hand to the first and on the other hand to the second central connection and through which the heat transfer medium flows.
  • heat transfer channels used always also includes tubes.
  • the object of the invention is to improve a heat transfer device of the type mentioned at the outset.
  • a heat transfer device that is particularly well suited to heat pump operation is to be created. Looked at even more closely, one should be used both in heating and heat transfer device that works equally well in cooling mode can also be provided.
  • alternatively flowable means that either one or the other flow path, but not both, are designed to be flown through at the same time, which, as will be discussed in more detail below, can be implemented, for example, via appropriate valves, in particular check valves. 25
  • this heat transfer device is characterized in that it has two flow paths with different flow resistances, for example preferably such that the heat transfer device opposes a different resistance depending on the flow direction of the flow.
  • This approach which also involves distributing the heat transfer medium as evenly as possible to the individual flow paths or heat transfer channels, leads to improved efficiency, particularly in a heat pump device that operates in both heating and cooling mode.
  • a flow device causing a different flow resistance depending on the flow direction of the heat transfer medium is provided on each flow channel.
  • this heat transfer device is characterized in that the flow channels are each provided with a flow device which causes a different flow resistance in one flow direction than in the other flow direction of the heat transfer medium.
  • the heat exchanger shown there has only one central connection and not, like the solution according to the invention, two, because there, i.e. in the solution according to said document, the heat transfer medium either flows into the heat exchanger via connection 2.10 and leaves it via connection 10 2.20 or the heat transfer medium flows into the heat exchanger via connection 2.30 and leaves it via connection 2.20.
  • FIG. 1 shows a first exemplary embodiment of the heat transfer device according to the invention (according to the first solution); 25
  • FIG. 2 shows a second exemplary embodiment of the heat transfer device according to the invention (according to the first solution);
  • FIG. 3 shows a first heat pump circuit diagram (refrigeration circuit) for use of the heat transfer devices according to the invention according to FIGS. 1 and 2 (according to the first solution);
  • FIG. 4 shows a second heat pump circuit diagram for using a heat transfer device in the (modified) sense of FIG. 5 (according to the first solution);
  • FIG. 5 shows a third exemplary embodiment of the heat transfer device according to the invention (according to the first solution);
  • FIG. 6 shows a fourth exemplary embodiment of the heat transfer device according to the invention (according to the second solution);
  • FIG. 7 shows the flow device according to FIG. 6 with a flow from right to left
  • FIG. 8 shows the flow device according to FIG. 6 with flow from left to right.
  • the heat transfer devices 15 shown in the figures initially all consist of a heat exchanger 1 through which a heat transfer medium, i.e. a gaseous or liquid fluid depending on the prevailing conditions, flows, a first central connection 1.1 for supplying or removing the heat transfer medium to or from the heat exchanger 20 1, a second central connection 1.2 for removing or supplying the heat transfer medium from or to the heat exchanger 1 and several heat transfer channels 1.3 forming the heat exchanger 1, which are hydraulically connected on the one hand to the first and on the other hand to the second central connection 1.1, 1.2 and through which the heat transfer medium flows .
  • a heat transfer medium i.e. a gaseous or liquid fluid depending on the prevailing conditions
  • the heat transfer medium flows through either one flow path 1.10 or the other flow path 1.20. It may be the case that in both flow paths at the same time
  • the flow paths 1.10, 1.20 have different flow cross sections. This option is implemented in particular in the exemplary embodiment according to FIG.
  • the heat exchanger 1 is designed as part of a heat pump device.
  • the heat exchanger 1, through which a heat transfer medium flows is additionally configured so that air can flow around it or water or brine can flow through it:
  • the heat exchanger 1 is configured or operated in the heating mode as an evaporator 25 (and in the cooling mode as a condenser) of a heat pump device that is optionally used for heating or cooling.
  • the heat exchanger 1 is particularly preferably designed as a so-called fin tube heat exchanger.
  • Figures 1 to 3 and 6 30 show this variant. Run in this embodiment the preferably tubular heat transfer channels 1.3 preferably (essentially) horizontal.
  • the heat exchanger 1 is configured or operated in the heating mode as a condenser (and 5 in the cooling mode as an evaporator) of a heat pump device that is optionally used for heating or cooling.
  • the heat exchanger 1 is particularly preferably designed as a so-called plate heat exchanger.
  • Figures 4 and 5 show this variant.
  • the heat transfer channels 1.3 which are preferably in the form of flat channels, preferably have not only a horizontal but also a vertical direction of extension. 15
  • the heat exchanger 1 is designed as a plate heat exchanger.
  • the heat transfer channels 1.3 are designed as part of either a plate heat exchanger or a finned tube heat exchanger. 25
  • the heat pump device can also be equipped with the heat transfer device according to the invention (according to FIGS. 1 to 8) both on the condenser side and on the evaporator side. 30 Furthermore, it is particularly preferred, and this is also realized in all the illustrated exemplary embodiments (FIGS. 1 to 8), for the heat transfer channels 1.3 to be designed to open out into a distributor space 1.4 at both ends. In FIG. 1, the connecting line shown vertically between the individual lines connected to the heat transfer channels 1.3 ultimately forms this distributor space 1.4.
  • a distribution device 1.5 (known per se from document DE 20 2008 004 582 U1) for the heat transfer medium is arranged in the distribution space 1.4. It is furthermore particularly preferred that the distribution device 1.5 is formed from a tubular insert with openings 1.5.1 assigned to the heat transfer channels 1.3.
  • the heat exchanger 1 is provided with a first connection 1.6 opening directly into the distributor space 1.4 and a second connection 1.7 opening into the distribution device 1.5.
  • the two connections 1.6, 1.7 are also particularly preferably arranged on opposite sides of the heat exchanger 1 designed as a plate heat exchanger.
  • the distributor device device 1.5 is the distributor space 1.4 incomplete (that is, leaving the flow space free) is designed to fill it.
  • each flow path 1.10, 1.20 is designed so that the flow can flow in only one direction.
  • each flow path 1.10, 1.20 is provided with a valve 1.8.
  • the valve 1.8 (or the valves 1.8) is (are) designed as a non-return valve(s).
  • the second solution of the heat transfer device according to the invention shown in FIGS. 6 to 8 is also essential in that a flow device 2 causing a different flow resistance depending on the flow direction of the heat transfer medium is provided on each heat transfer channel 1.3.
  • the flow device 2 itself must be clearly distinguished from the heat transfer channels 1.3 used for the actual heat transfer.
  • the flow device 2 has a flow element 2.1 for each heat transfer channel 1.3 25 that assumes different positions depending on the direction of flow and generates different flow cross sections for the heat transfer medium.
  • This flow element 2.1 is (see FIGS. 7 and 8) particularly preferably designed as a ball guided in a cage 2.2.
  • the heat transfer device according to the invention works as follows:
  • the heat transfer medium is to flow to the heat exchanger 1 (here, as 10 already mentioned, a so-called finned tube heat exchanger) via the first central connection 1.1 (which in this example corresponds to heating operation), this can only happen via the lower valve 1.8 , since the upper valve 1.8 closes automatically. In this case, the flow is through the shorter flow path 1.20 on the way to the heat exchanger 1.
  • the heat transfer medium After leaving the heat exchanger 1, the heat transfer medium then reaches a distributor space 1.4 and from there finally to the second central connection 1.2. If the heat transfer medium is to be routed in reverse through the heat exchanger 1 instead (which in this example corresponds to the cooling operation), then it is fed to it via the second central connection 1.2.
  • the heat transfer device After leaving the heat transfer channels 1.3, it then reaches the first central connection 1.1 via the flow path 1.10. Flow through the other flow path 1.20 is ruled out due to the lower valve 1.8 closing in this case. And since the flow path 1.10, as can be seen, is substantially longer overall than the flow path 1.20, the heat transfer device according to the invention places more resistance on a flow from the second central connection 1.2 to the first central connection 1.1 (cooling mode). against a flow from the first central connection 1.1 to the second central connection 1.2 (heating operation).
  • a flow resistance or pressure loss of the flow paths 1.10, 1.20 is designed or designed many times higher than a result from the vertical Arrangement of the distribution space 1.4 resulting pressure difference between the most distant heat transfer channels 1.3, ie between the 25 top and bottom heat transfer channel 1.3. This requirement leads to a particularly even distribution of the heat transfer medium to the individual heat transfer channels 1.3.
  • one (lower) heat exchanger 1 works as an evaporator when heating and as a condenser when cooling. Flow from left to right (i.e. when heating is associated with a greater flow resistance than flow from right to left (i.e. when cooling) is associated.
  • the heat exchanger 1 of the heat transfer device is designed as a condenser in the heating mode 10 .
  • the heat transfer medium is compressed with the heat pump compressor and conveyed (via the switching device shown) to the first central connection 1.1. From there it flows via the valve 1.8 and the flow path 1.10 to the first connection 1.6 of the heat exchanger 1 shown on the left in Figure 4.
  • the heat transfer medium leaves the heat exchanger 1 on its right side and then flows via a branch and into it Direction of opening valve 1.8 to the second central connection 1.2. Because of the given pressure conditions in the cooling cycle, the other two valves 1.8 are closed.
  • the other or second flow path 1.20 is not flowed through in this mode of operation.
  • the heat transfer medium then finally flows from the second central connection 1.2 via the expansion device to the evaporator and from there again via the switching device to the heat pump compressor. So the circle is closed. - If the switching device is now switched over and the heat pump device is thus switched to cooling mode, the heat pump compressor conveys the heat transfer medium first to the heat exchanger shown below in the figure, which now works as a condenser. From there, the heat transfer medium reaches the expansion device and from there via the valve 1.8 and the flow path 1.20 to the second connection 1.7. Since this is provided with the distribution device 1.5, the flow of the heat transfer medium on this flow path 1.20 is opposed to a higher resistance (than a flow in the flow path 1.10).
  • the outflow of the heat transfer medium takes place again via the right-hand side of the heat exchanger 1, but this time via the valve 1.8 back to the heat pump compressor.
  • the other two valves 1.8 are always closed due to the existing pressure conditions in the cooling circuit 10 in this mode of operation.
  • the heat transfer medium flows through the heat transfer channels 1.3 (in this example) in both operating modes (heating and cooling mode) in the same direction (from left to right in the illustration). 15
  • the heat transfer medium flows via the second central connection 1.2 into the distributor space 1.4 and from there is divided into the heat transfer channels 1.3.
  • the individual partial flows then meet the flow elements 2.1, which are guided here as cages 2.2. te balls are formed.
  • the impulse emanating from the flow pushes the balls in the cage 2.2 to the left, which, due to the channel becoming narrower in this direction, means that only a comparatively small flow cross section remains for the heat transfer medium. 5

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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)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention se rapporte à un dispositif de transfert de chaleur comprenant un échangeur de chaleur (1) qui est traversé par un fluide caloporteur, un premier raccord central (1.1) pour approvisionner ou évacuer le fluide caloporteur vers ou à partir de l'échangeur de chaleur (1), un second raccord central (1.2) pour évacuer ou approvisionner le fluide caloporteur depuis ou vers l'échangeur de chaleur (1), et une pluralité de canaux caloporteurs (1.3) qui forment l'échangeur de chaleur (1), sont reliés hydrauliquement d'une part au premier et d'autre part au second connecteur central (1,1, 1.2), et sont traversés par le fluide caloporteur. Selon l'invention, il est prévu conformément à une solution que deux voies d'écoulement (1.10, 1.20) qui peuvent être traversées en alternance et provoquent/ont des résistances à l'écoulement sont disposées sélectivement entre le premier et/ou le second connecteur central (1,1, 1,2) et les canaux caloporteurs (1,3). Selon une autre solution selon l'invention, un dispositif d'écoulement (2) qui provoque une résistance à l'écoulement différente en fonction de la direction d'écoulement du fluide caloporteur est disposé sur chaque canal caloporteur (1.3).
EP22735294.5A 2021-06-16 2022-06-03 Dispositif de transfert de chaleur Pending EP4356060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021115560.6A DE102021115560A1 (de) 2021-06-16 2021-06-16 Wärmeübertragungsvorrichtung
PCT/DE2022/100419 WO2022262901A1 (fr) 2021-06-16 2022-06-03 Dispositif de transfert de chaleur

Publications (1)

Publication Number Publication Date
EP4356060A1 true EP4356060A1 (fr) 2024-04-24

Family

ID=82321279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22735294.5A Pending EP4356060A1 (fr) 2021-06-16 2022-06-03 Dispositif de transfert de chaleur

Country Status (3)

Country Link
EP (1) EP4356060A1 (fr)
DE (1) DE102021115560A1 (fr)
WO (1) WO2022262901A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116742491B (zh) * 2023-08-09 2023-11-21 新乡市景弘电气有限公司 一种灭火装置及具有其的箱式变电站
WO2026040914A1 (fr) * 2024-08-23 2026-02-26 青岛海尔空调电子有限公司 Distributeur de liquide et climatiseur

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US3749380A (en) 1971-04-02 1973-07-31 Babcock & Wilcox Co Absorption optimization
US4307578A (en) * 1980-04-16 1981-12-29 Atlantic Richfield Company Heat exchanger efficiently operable alternatively as evaporator or condenser
EP1856588A4 (fr) * 2005-02-02 2010-07-21 Carrier Corp Echangeur de chaleur a ecoulement parallele pour applications de type pompe a chaleur
DE202008004582U1 (de) 2007-04-16 2008-06-19 Viessmann Werke Gmbh & Co Kg Plattenwärmetauscher
DE102010050098A1 (de) 2010-10-29 2012-05-03 Wolfgang Seemann Wärmetauscher mit hydrostatischem Strömungsventil
US9752803B2 (en) 2011-02-16 2017-09-05 Johnson Controls Technology Company Heat pump system with a flow directing system
KR101872784B1 (ko) * 2012-02-03 2018-06-29 엘지전자 주식회사 실외 열교환기
WO2014117017A1 (fr) * 2013-01-25 2014-07-31 Trane International Inc. Modulation de capacité d'un détendeur d'un système hvac
DE102014001499A1 (de) 2014-02-06 2015-08-06 Api Schmidt-Bretten Gmbh & Co. Kg Zum Wärme- und/oder Stoffaustausch geeigneter Plattenapparat
FR3061280B1 (fr) * 2016-11-30 2019-08-09 Valeo Systemes Thermiques Dispositif de distribution d'un fluide refrigerant a l'interieur d'une boite collectrice d'un echangeur thermique pour une installation de conditionnement d'air d'un vehicule
DE102017211256B4 (de) * 2017-07-03 2023-11-16 Audi Ag Kälteanlage für ein Fahrzeug mit einem einen Wärmeübertrager aufweisenden Kältemittelkreislauf

Also Published As

Publication number Publication date
DE102021115560A1 (de) 2022-12-22
WO2022262901A1 (fr) 2022-12-22

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Owner name: VIESSMANN HOLDING INTERNATIONAL GMBH