EP3757502A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- EP3757502A1 EP3757502A1 EP19461548.0A EP19461548A EP3757502A1 EP 3757502 A1 EP3757502 A1 EP 3757502A1 EP 19461548 A EP19461548 A EP 19461548A EP 3757502 A1 EP3757502 A1 EP 3757502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- heat exchanger
- pass
- tubes
- opening
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 238000004378 air conditioning Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- XTKDAFGWCDAMPY-UHFFFAOYSA-N azaperone Chemical compound C1=CC(F)=CC=C1C(=O)CCCN1CCN(C=2N=CC=CC=2)CC1 XTKDAFGWCDAMPY-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- F28F9/0278—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
Definitions
- the invention relates to heat exchangers.
- it relates to heat exchangers with heat exchange tubes and connection blocks.
- Heat exchangers commonly used in the industry usually comprise connection blocks, into which the connecting pipe of the heat exchange system can be connected so that the heat exchange fluid can be supplied to or received from said heat exchanger.
- the placement of the connection blocks on the heat exchanger are predetermined. This may be problematic, as in some cases, the placement of the exit or entry for the heat exchange fluid greatly influences the performance of the heat exchanger. For example, in case of heat exchangers with two manifolds connected by heat exchange tubes, a so-called “dead zones" can occur, wherein the flow of the heat exchange fluid is limited. This can occur especially when the connection block is not placed centrally with respect to given plurality of tubes. Examples of such heat exchangers are a condenser, an evaporator, or an evaporator-condenser, which may function in both heating mode and cooling mode.
- the object of the invention is, among others, a heat exchanger comprising a first manifold and a second manifold connected by tubes, configured to provide at least two passes for a heat exchange fluid between an inlet port and an outlet port located on either of the manifolds.
- the heat exchanger is characterised in that for at least one of the passes at least one of the manifolds comprises a first section adapted to receive the heat exchange fluid directly from the tubes, and a second section which is adapted to receive the heat exchange fluid from the tubes through a third section, the third section being adapted to receive the heat exchange fluid directly from the tubes and being arranged in fluid communication with the second section.
- the third section is arranged in parallel to the second section.
- the third section is connected fluidically with the second section through a first opening and a second opening.
- the first pass is associated with the inlet port
- the second pass is associated with the outlet port
- the first opening is located closer to the outlet port then the second opening.
- the first opening has a smaller hydraulic diameter than the second opening.
- it comprises a third pass between the first pass and the second pass.
- the third section receives all the tubes of the second pass.
- the third section receives a part of the tubes of the second pass.
- the third section receives bottom part of the tubes.
- the outlet port is associated with the lower half of the second pass.
- the outlet port is associated with the top half of the second pass.
- an air-conditioning loop comprises a heat exchanger according to the subject of an invention.
- Fig. 1 shows a heat exchanger according to the invention in a first example.
- the heat exchanger comprises a first manifold 1 and a second manifold 2.
- Manifolds 1, 2 are connected by tubes 3.
- the heat exchanger further comprises an inlet port 6 and an outlet port 7 located on either of the manifolds 1, 2. In this case, both the inlet port 6 and the outlet port 7 are located on the first manifold 1 - one below the other.
- the heat exchanger is configured to provide at least two passes 4, 5 for a heat exchange fluid between the inlet port 6 and the outlet port 7.
- pass it is understood a group of tubes 3 located one next to the other, in which the heat exchange fluid flows in the same direction.
- the heat exchanger further comprises the third section 10 next to the second section 9, preferably in parallel to the second section 9.
- the third section 10 receives the heat exchanger fluid from the tubes 3 comprised in the second pass 5. Further, the third section 10 is in fluid communication with the second section 9 at least through a first opening 11.
- the second section 9 and the third section 10 are in a fluid communication through the first opening 11 and a second opening 12.
- the first pass 4 is associated with the inlet port 6.
- the second pass 5 is associated with the outlet port 7.
- the outlet port 7 may be associated either with the lower part of the second pass 5 or with the top half of the second pass 5. In principle, it could also be associated with the middle of the pass 5. The type of association affects how the heat exchange fluid travels across the part of the heat exchanger delimited by the second pass 5.
- the first opening 11 is located closer to the outlet port 7 than the second opening 12.
- the outlet port 7 is located near the outermost end of the second section 9.
- moving the outlet port 7 to the bottom of the second section 9 may be needed. For example, such need may occur when the packaging constrains or deployment of other devices in the engine bay do not allow the outlet port 7 to be located on the outermost end of the second section 9.
- the openings between the second section 9 and the third section 10 may have different hydraulical diameter. This may allow to control the flow between the sections 9 and 10.
- the opening closer to the outlet port 7 has a smaller hydraulical diameter, to promote a more uniform flow of the fluid between the sections.
- the first opening 11 may have a smaller hydraulic diameter than the second opening 12.
- the third section 10 receives all the tubes 3 of the second pass 5, as presented in the Figs 1 and 2 .
- the third section 10 receives only a part of the tubes 3 of the second pass 5.
- the amount of the tubes 3 received by the third section 10 depends on the desired heat exchanger properties, flow regime, etc. In case when the third section 10 receives the part of the tubes 3 of the second pass 5, the remaining part of the tubes is received by the second section 9.
- Fig. 4 differs from the example of Fig. 3 in that there are two openings between the second section 9 and the third section 10. This may promote a more uniform flow of the fluid through the heat exchanger.
- the third section 10 receives bottom part of the tubes 3. Consequently, the remaining upper part of the tubes 3 is longer than the bottom part of the tubes 3 and they are received by the second section 9.
- the heat exchanger comprises a third pass 13 between the first pass 4 and the second pass 5.
- the fluid flows first through the first pass 4, then through the third pass 13 and finally through the second pass 3.
- the third pass 13 is suitable for applications in which the outlet port 7 is desired to be deployed on the opposite side of the heat exchanger. Even in such case, the flow through the second pass 3 is more uniform than if the third section 10 was not applied.
- Figs. 7a-7e show a plurality of examples of a heat exchanger in a cross-section through a manifold, with openings visible between the second section 9 and the third section 10.
- Fig. 7a shows an example, in which the first opening 11 is the only opening providing a fluidal communication of the third section 10 with the second section 9.
- Fig. 7b shows an example, in which there are two openings - the first opening 11 and the second opening 12 providing a fluidal communication of the third section 10 with the second section 9. In this case, they are of the same hydraulic diameter.
- Fig. 7c shows an example, in which there are two openings - the first opening 11 and the second opening 12 providing a fluidal communication of the third section 10 with the second section 9.
- the first opening 11 is of a smaller hydraulic diameter than the second opening 12.
- Fig. 7d shows an example, in which besides the first opening 11, the second opening 12 there is a further plurality of openings between the second section 9 and the third section 10. In this case, all of the openings are of the same hydraulic diameter.
- Fig. 7e shows an example, in which besides the first opening 11, the second opening 12 there is a further plurality of openings between the second section 9 and the third section 10.
- the hydraulic diameter is progressively increasing from the first opening to the last.
- the invention allows to eliminate additional components, and the whole assembly is lighter.
- the invention allows mitigating the occurrence of the "dead-zones" within the pass associated with the outlet block, especially when the block is not placed near the center of the pass.
- the invention provides analogous benefits when the flow through the inlet/outlets, manifolds and tubes is reversed, i.e. it works in cooling mode.
- the outlet then becomes an inlet, and the inlet becomes an outlet.
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
- The invention relates to heat exchangers. In particular, it relates to heat exchangers with heat exchange tubes and connection blocks.
- Heat exchangers commonly used in the industry usually comprise connection blocks, into which the connecting pipe of the heat exchange system can be connected so that the heat exchange fluid can be supplied to or received from said heat exchanger. Oftentimes, the placement of the connection blocks on the heat exchanger are predetermined. This may be problematic, as in some cases, the placement of the exit or entry for the heat exchange fluid greatly influences the performance of the heat exchanger. For example, in case of heat exchangers with two manifolds connected by heat exchange tubes, a so-called "dead zones" can occur, wherein the flow of the heat exchange fluid is limited. This can occur especially when the connection block is not placed centrally with respect to given plurality of tubes. Examples of such heat exchangers are a condenser, an evaporator, or an evaporator-condenser, which may function in both heating mode and cooling mode.
- One of the known solutions to this problem is utilization of additional tubing, which receives the heat exchange fluid from the manifold at a place optimal in terms of performance and then directs it to the connection block located elsewhere. However, such additional tubing negatively influences the external dimensioning of the heat exchanger. This may lead to reduction of active area of the core and creation of areas, which cannot be effectively used for heat exchange. Additionally, in some applications it becomes necessary to introduce additional sealing to prevent by-passing of the core by air in those areas.
- It would be desirable to provide a heat exchanger which would allow for optimal performance and at the same time for an unrestricted placement of the inlet/outlet connection block.
- The object of the invention is, among others, a heat exchanger comprising a first manifold and a second manifold connected by tubes, configured to provide at least two passes for a heat exchange fluid between an inlet port and an outlet port located on either of the manifolds. The heat exchanger is characterised in that for at least one of the passes at least one of the manifolds comprises a first section adapted to receive the heat exchange fluid directly from the tubes, and a second section which is adapted to receive the heat exchange fluid from the tubes through a third section, the third section being adapted to receive the heat exchange fluid directly from the tubes and being arranged in fluid communication with the second section.
- Preferably, the third section is arranged in parallel to the second section.
- Preferably, the third section is connected fluidically with the second section through a first opening and a second opening.
- Preferably, the first pass is associated with the inlet port, the second pass is associated with the outlet port, and the first opening is located closer to the outlet port then the second opening.
- Preferably, the first opening has a smaller hydraulic diameter than the second opening.
- Preferably, it comprises a third pass between the first pass and the second pass.
- Preferably, the third section receives all the tubes of the second pass.
- Preferably, the third section receives a part of the tubes of the second pass.
- Preferably, the third section receives bottom part of the tubes.
- Preferably, the outlet port is associated with the lower half of the second pass.
- Preferably, the outlet port is associated with the top half of the second pass.
- Preferably, an air-conditioning loop comprises a heat exchanger according to the subject of an invention.
- Examples of the invention will be apparent from and described in detail with reference to the accompanying drawings, in which:
-
Fig. 1 shows a heat exchanger according to the invention in a first example; -
Fig. 2 shows a heat exchanger according to the invention in a second example; -
Fig. 3 shows a heat exchanger according to the invention in a third example; - Fig. 4 shows a heat exchanger according to the invention in a fourth example;
- Fig. 5 shows a heat exchanger according to the invention in a fifth example;
- Fig. 6 shows a heat exchanger according to the invention in a sixth example;
-
Figs. 7a-7b show a plurality of examples of a heat exchanger in a cross-section through a manifold, with openings visible between the second and the third section. -
Fig. 1 shows a heat exchanger according to the invention in a first example. The heat exchanger comprises afirst manifold 1 and asecond manifold 2.Manifolds tubes 3. The heat exchanger further comprises aninlet port 6 and anoutlet port 7 located on either of themanifolds inlet port 6 and theoutlet port 7 are located on the first manifold 1 - one below the other. The heat exchanger is configured to provide at least twopasses inlet port 6 and theoutlet port 7. By the term "pass" it is understood a group oftubes 3 located one next to the other, in which the heat exchange fluid flows in the same direction. The heat exchanger further comprises thethird section 10 next to thesecond section 9, preferably in parallel to thesecond section 9. Thethird section 10 receives the heat exchanger fluid from thetubes 3 comprised in thesecond pass 5. Further, thethird section 10 is in fluid communication with thesecond section 9 at least through afirst opening 11. - In the embodiment presented in
Fig.2 thesecond section 9 and thethird section 10 are in a fluid communication through thefirst opening 11 and asecond opening 12. - As shown in
Figs 1-6 , thefirst pass 4 is associated with theinlet port 6. Analogically, thesecond pass 5 is associated with theoutlet port 7. Theoutlet port 7 may be associated either with the lower part of thesecond pass 5 or with the top half of thesecond pass 5. In principle, it could also be associated with the middle of thepass 5. The type of association affects how the heat exchange fluid travels across the part of the heat exchanger delimited by thesecond pass 5. - In
Fig. 2 and 4 thefirst opening 11 is located closer to theoutlet port 7 than the second opening 12. Theoutlet port 7 is located near the outermost end of thesecond section 9. However, in some applications, as presented in the Fig. 5, moving theoutlet port 7 to the bottom of thesecond section 9 may be needed. For example, such need may occur when the packaging constrains or deployment of other devices in the engine bay do not allow theoutlet port 7 to be located on the outermost end of thesecond section 9. - The openings between the
second section 9 and thethird section 10 may have different hydraulical diameter. This may allow to control the flow between thesections outlet port 7 has a smaller hydraulical diameter, to promote a more uniform flow of the fluid between the sections. - For example, in case of the example shown in
Fig. 2 , thefirst opening 11 may have a smaller hydraulic diameter than thesecond opening 12. - The
third section 10 receives all thetubes 3 of thesecond pass 5, as presented in theFigs 1 and 2 . Alternatively, as shown inFig. 3 , thethird section 10 receives only a part of thetubes 3 of thesecond pass 5. The amount of thetubes 3 received by thethird section 10 depends on the desired heat exchanger properties, flow regime, etc. In case when thethird section 10 receives the part of thetubes 3 of thesecond pass 5, the remaining part of the tubes is received by thesecond section 9. - The example shown in Fig. 4 differs from the example of
Fig. 3 in that there are two openings between thesecond section 9 and thethird section 10. This may promote a more uniform flow of the fluid through the heat exchanger. - In another example, as presented in the Fig. 5, the
third section 10 receives bottom part of thetubes 3. Consequently, the remaining upper part of thetubes 3 is longer than the bottom part of thetubes 3 and they are received by thesecond section 9. - In an embodiment presented in the Fig. 6 the heat exchanger comprises a
third pass 13 between thefirst pass 4 and thesecond pass 5. In this case, the fluid flows first through thefirst pass 4, then through thethird pass 13 and finally through thesecond pass 3. Thethird pass 13 is suitable for applications in which theoutlet port 7 is desired to be deployed on the opposite side of the heat exchanger. Even in such case, the flow through thesecond pass 3 is more uniform than if thethird section 10 was not applied. -
Figs. 7a-7e show a plurality of examples of a heat exchanger in a cross-section through a manifold, with openings visible between thesecond section 9 and thethird section 10. -
Fig. 7a shows an example, in which thefirst opening 11 is the only opening providing a fluidal communication of thethird section 10 with thesecond section 9. -
Fig. 7b shows an example, in which there are two openings - thefirst opening 11 and thesecond opening 12 providing a fluidal communication of thethird section 10 with thesecond section 9. In this case, they are of the same hydraulic diameter. -
Fig. 7c shows an example, in which there are two openings - thefirst opening 11 and thesecond opening 12 providing a fluidal communication of thethird section 10 with thesecond section 9. In this case, thefirst opening 11 is of a smaller hydraulic diameter than thesecond opening 12. -
Fig. 7d shows an example, in which besides thefirst opening 11, thesecond opening 12 there is a further plurality of openings between thesecond section 9 and thethird section 10. In this case, all of the openings are of the same hydraulic diameter. -
Fig. 7e shows an example, in which besides thefirst opening 11, thesecond opening 12 there is a further plurality of openings between thesecond section 9 and thethird section 10. In this case, the hydraulic diameter is progressively increasing from the first opening to the last. - Compared to classic jumper-line design, the invention allows to eliminate additional components, and the whole assembly is lighter.
- In general, the invention allows mitigating the occurrence of the "dead-zones" within the pass associated with the outlet block, especially when the block is not placed near the center of the pass.
- It should mentioned that the invention provides analogous benefits when the flow through the inlet/outlets, manifolds and tubes is reversed, i.e. it works in cooling mode. The outlet then becomes an inlet, and the inlet becomes an outlet.
- Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of drawings, the disclosure, and the appended claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to the advantage.
Claims (12)
- A heat exchanger comprising a first manifold 1 and a second manifold 2 connected by tubes 3, configured to provide at least two passes 4, 5 for a heat exchange fluid between an inlet port 6 and an outlet port 7 located on either of the manifolds 1, 2, characterised in that for at least one of the passes 4, 5, at least one of the manifolds 1, 2 comprises a first section 8 adapted to receive the heat exchange fluid directly from the tubes 3, and a second section 9 which is adapted to receive the heat exchange fluid from the tubes 3 through a third section 10, the third section 10 being adapted to receive the heat exchange fluid directly from the tubes 3 and being arranged in fluid communication with the second section 9.
- A heat exchanger according to claim 1, wherein the third section 10 is arranged in parallel to the second section 9.
- A heat exchanger according to any preceding claim, wherein the third section 10 is connected fluidically with the second section 9 through a first opening 11 and a second opening 12.
- A heat exchanger according to claim 3, wherein the first pass 4 is associated with the inlet port 6, the second pass 5 is associated with the outlet port 7, and the first opening 11 is located closer to the outlet port 7 then the second opening 12.
- A heat exchanger according to claim 3 or 4, wherein the first opening 11 has a smaller hydraulic diameter than the second opening 12.
- A heat exchanger according to any preceding claim, wherein it comprises a third pass 13 between the first pass 4 and the second pass 5.
- A heat exchanger according to any preceding claim, wherein the third section 10 receives all the tubes 3 of the second pass 5.
- A heat exchanger according to any of claims 1-6, wherein the third section 10 receives a part of the tubes 3 of the second pass 5.
- A heat exchanger according to claim 8, wherein the third section 10 receives bottom part of the tubes 3.
- A heat exchanger according to any preceding claim, wherein the outlet port 7 is associated with the lower half of the second pass 5.
- A heat exchanger according to any preceding claim, wherein the outlet port 7 is associated with the top half of the second pass 5.
- An air-conditioning loop comprising a heat exchanger according to any preceding claim.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19461548.0A EP3757502A1 (en) | 2019-06-26 | 2019-06-26 | Heat exchanger |
PCT/EP2020/066475 WO2020260052A1 (en) | 2019-06-26 | 2020-06-15 | Heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19461548.0A EP3757502A1 (en) | 2019-06-26 | 2019-06-26 | Heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3757502A1 true EP3757502A1 (en) | 2020-12-30 |
EP3757502A9 EP3757502A9 (en) | 2022-02-09 |
Family
ID=67105967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19461548.0A Pending EP3757502A1 (en) | 2019-06-26 | 2019-06-26 | Heat exchanger |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3757502A1 (en) |
WO (1) | WO2020260052A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3511952A1 (en) * | 1985-04-02 | 1986-10-09 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Heat exchanger for a heating or air-conditioning system of a motor vehicle |
JP2003075024A (en) * | 2001-06-18 | 2003-03-12 | Showa Denko Kk | Evaporator, its manufacturing method, header member for the vaporizer and refrigerating system |
EP1300646A2 (en) * | 2001-10-06 | 2003-04-09 | Behr GmbH & Co. | Heat exchanger, more particularly flat tubes heat exchanger for automotive vehicle |
WO2008048505A2 (en) * | 2006-10-13 | 2008-04-24 | Carrier Corporation | Multi-pass heat exchangers having return manifolds with distributing inserts |
-
2019
- 2019-06-26 EP EP19461548.0A patent/EP3757502A1/en active Pending
-
2020
- 2020-06-15 WO PCT/EP2020/066475 patent/WO2020260052A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3511952A1 (en) * | 1985-04-02 | 1986-10-09 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Heat exchanger for a heating or air-conditioning system of a motor vehicle |
JP2003075024A (en) * | 2001-06-18 | 2003-03-12 | Showa Denko Kk | Evaporator, its manufacturing method, header member for the vaporizer and refrigerating system |
EP1300646A2 (en) * | 2001-10-06 | 2003-04-09 | Behr GmbH & Co. | Heat exchanger, more particularly flat tubes heat exchanger for automotive vehicle |
WO2008048505A2 (en) * | 2006-10-13 | 2008-04-24 | Carrier Corporation | Multi-pass heat exchangers having return manifolds with distributing inserts |
Also Published As
Publication number | Publication date |
---|---|
EP3757502A9 (en) | 2022-02-09 |
WO2020260052A1 (en) | 2020-12-30 |
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