EP3015808B1 - Wärmetauscher, wärmetauscherstruktur und rippe für wärmetauscher - Google Patents
Wärmetauscher, wärmetauscherstruktur und rippe für wärmetauscher Download PDFInfo
- Publication number
- EP3015808B1 EP3015808B1 EP13888478.8A EP13888478A EP3015808B1 EP 3015808 B1 EP3015808 B1 EP 3015808B1 EP 13888478 A EP13888478 A EP 13888478A EP 3015808 B1 EP3015808 B1 EP 3015808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- fin
- tubes
- heat exchanger
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012546 transfer Methods 0.000 claims description 129
- 239000003507 refrigerant Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 39
- 239000000155 melt Substances 0.000 description 29
- 238000010438 heat treatment Methods 0.000 description 18
- 238000010257 thawing Methods 0.000 description 18
- 238000009423 ventilation Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 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
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
Definitions
- one heat exchanger functions as a condenser during a cooling operation and as an evaporator during a heating operation.
- a heat exchanger in an outdoor unit functions as an evaporator during the heating operation.
- the evaporator performs the heating operation during cold weather, for example, when the outside air temperature is as low as about -5°C, a frosting phenomenon occurs in the evaporator in which moisture in the air attaches to the evaporator as frost.
- frosting occurs from the upwind side of the heat exchanger, and the frost gradually grows toward the downwind side.
- a fin heat transfer area for directly exchanging heat with the air is reduced, thereby reducing a heating capability.
- the frosting narrows a ventilation path between fins to reduce the volume of air, which also reduces the heating capability.
- the heat exchanger of the present invention includes the heat transfer walls including a first edge portion and a second edge portion indented toward the downwind side relative to the first edge portion, and the first edge portion and the second edge portion are each disposed at least on every other layer in the direction of the arrangement. Accordingly, a fin pitch between the first edge portions adjacent to each other in the arrangement direction can be widened. As a result, even if frosting occurs locally on the first edge portions positioned on an upwind side end of the fin, the heat exchanger can exchange heat continuously on the downwind side because the ventilation path is secured.
- the drainage of the melt water can be improved also on the downwind side. Further, even if the remaining melt water solidifies, a heat transfer area of the fin available for exchanging heat directly with the air can be secured appropriately, and in addition, the ventilation path can be prevented from becoming easily clogged.
- the tubes 21 each have a flat cross section and include a flowpath for a refrigerant penetrating therethrough in the axial direction.
- the tubes 21 are manufactured by extruding copper or a copper alloy, or aluminum or an aluminum alloy that have excellent thermal conductivity, or by roll forming a plate-like material.
- the header tubes 30 may be manufactured from a material similar to that of the tubes 21.
- the tubes 21 may be manufactured integrally or may be manufactured by combining several members.
- an air conditioner including the heat exchanger 10 as an outdoor heat exchanger is performing the heating operation in a low outside air temperature, frosting occurs on the fin 22 on the upwind side of the airflow A.
- the upwind side of the airflow A may simply be referred to as the upwind side for short.
- the air conditioner performs a defrosting operation, for example, regularly for removing the attached frost. If the melt water remains not being fully drained from the heat exchanger 10 after the defrosting operation, it might freeze after resumption of the heating operation, possibly causing frosting again.
- a second condition is that the heat transfer pieces 23L and 23R are each disposed on every other layer of the heat transfer wall 23, such that the heat transfer pieces 23L and 23R appear alternately on the opposite sides of the midpoint M in the width direction X.
- the condition is equivalent to that the cutouts are disposed on every other layer of the heat transfer wall 23, alternately on the opposite sides of the midpoint M in the width direction X.
- the fin 22 can minimize a reduction in heat exchange efficiency.
- the heat exchanger 10 can ensure a desired heat transfer performance within the area U if the heat transfer pieces 23L and 23R are connected to the tubes 21 such that the heat transfer pieces 23L and 23R are able to exchange heat with the tubes 21.
- the cutouts of the fin 22 of the embodiment each have a rectangular shape as seen in a plan view
- the cutouts may have any shape as long as the embodiment achieves the objects of the present invention.
- the cutouts may adopt several shapes including a circular cutout ( FIG. 6A ), a triangular cutout ( FIG. 6B ), a polygonal cutout ( FIG. 6C ), and a steplike cutout ( FIG. 6D ).
- turns of the fin 22 may be in any pattern as long as the embodiment achieves the objects of the present invention.
- FIGS. 7A to 7D and 8B show some patterns adoptable in the present invention, and the present invention may adopt these patterns.
- FIG. 7A shows a pattern in which lower portions of each heat transfer wall 23 connected to the turn 24 are cut out.
- FIG. 7B shows a pattern in which upper portions of each heat transfer wall 23 connected to the turn 24 are cut out.
- the melt water flows downward taking the shortcut route to facilitate drainage of the melt water compared with a conventional corrugated fin in which heat transfer walls 23 are provided almost entirely along the space between the tubes 21, 21.
- the heat transfer walls 23 are formed along the horizontal direction in the pattern in FIG. 7A , they may be inclined upward toward the middle in the width direction of the fin 22 as shown in FIG. 7C . Similarly, the heat transfer walls 23 in the pattern in FIG. 7B may be inclined downward toward the middle in the width direction of the fin 22 as shown in FIG. 7D . The drainage of the melt water can be further facilitated by thus inclining the heat transfer walls 23.
- the heat transfer pieces 23L on one side in the width direction X and the heat transfer pieces 23R on the other side are provided not to overlap with each other as seen in a vertical direction (as seen in a plan view), although the present invention is not limited to this.
- the heat transfer pieces 23L on the one side and the heat transfer pieces 23R on the other side may form overlaps K at the middle portion in the width direction X of the fin 22.
- This configuration also receives the above beneficial effect obtained by widening the fin pitch P1 of the above described area U because the fin pitch P1 of the heat transfer pieces 23L, 23L ... and the fin pitch P1 of the heat transfer pieces 23R, 23R ... within the area U close to the tubes 21 are twice as wide as the fin pitch P2 of the area D.
- the fin pitch P1 of the area U is widened by partially cutting out the fin workpiece 25, the present invention is not limited to this.
- the heat transfer pieces 23L, R may be folded downward to form regions corresponding to the cutouts. Then, the fin pitch P1 of the area U can be made wide compared with the fin pitch P2 of the area D similarly to the fin 22 of the first embodiment.
- Hanging pieces 23e formed by folding the heat transfer pieces each may be in contact with a surface of the heat transfer wall 23 on the lower layer at its tip as shown in FIG. 8C , or the tip may be away from the surface of the heat transfer wall 23 on the lower layer as shown in FIG. 8D which is not part of the presently claimed invention. In any case, the hanging pieces 23e contribute to facilitate drainage by forming paths for guiding the melt water downward.
- the heat transfer pieces may be folded at any angle.
- a louver 28 may be formed on the downwind side of the fin 22 (heat transfer wall 23) as shown in FIG. 9A (mode 2-1).
- the dehumidification can be performed also on the downwind side as a result of suppressing the dehumidification on the upwind side.
- a high heat transfer performance on the downwind side as in the mode 2-1 suppresses local frosting on the upwind side, thereby easily securing the ventilation paths 27.
- a duration of the heating operation can be extended because the heat exchanger 10 can exchange heat continuously on the downwind side.
- the upwind side of the fin 22 is not required to be processed, thereby suppressing increase in the processing cost.
- the louver 28 is formed by cutting and raising the heat transfer wall 23 and disturbing the flow of air passing over the louver 28 facilitates heat transfer between the air and the heat transfer wall 23. It is to be noted that the louver 28 facilitates heat transfer more effectively than undulations 29 that will be described later.
- the louver 28 may be provided at any region.
- the region is not limited to the downwind side but the louver 28 may be provided on the upwind side.
- the present invention can also improve heat transfer performance on the upwind side.
- the undulations 29 may be formed on the upwind side of the fin 22 (heat transfer wall 23) as shown in FIG. 9B (mode 2-2).
- the undulations 29 is wavy in a vertical cross section of the heat transfer wall 23 and has a shape of repeated mountain, valley, mountain ... from the upwind side to the downwind side.
- the louver 28 may be provided instead of the undulations 29 as shown in FIG. 9C for improving the heat transfer performance on the upwind side.
- an end of the fin 22 on the downwind side may be configured similarly to the end of the fin 22 on the upwind side according to the first embodiment. That is, as shown in FIGS. 10A to 10C , either of the opposite sides of the heat transfer wall 23 divided by the midpoint M in the width direction X is cut out. Because of the cutout, a leading edge portion 23d with the cutout is indented toward the upwind side relative to a leading edge portion 23c without the cutout. The leading edge portion 23c without the cutout is provided with heat transfer pieces 23L and 23R protruding toward the downwind side beyond the leading edge portion 23d. In addition, the heat transfer pieces 23L and 23R are each disposed on every other layer of the heat transfer wall 23, such that the heat transfer pieces 23L and 23R appear alternately on the opposite sides of the midpoint M in the width direction X.
- the third embodiment adopts a configuration of the widened fin pitch also on the downwind side to thereby reduce the amount of the melt water to accumulate on the downwind side. In this way, even if the remaining melt water solidifies after resumption of the heating operation, a heat transfer area of the fin 22 available for exchanging heat can be secured appropriately, and in addition, the ventilation path can be prevented from becoming easily clogged.
- the configuration of the widened fin pitch may adopt various forms as described in the first embodiment.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
Claims (5)
- Wärmetauscher (10; 10a, 10b), umfassend:mehrere Rohre (21), die jeweils einen Strömungsweg (21a) aufweisen, durch den ein Kältemittel strömt, undeine gewellte Rippe (22), die mehrere Wärmeübertragungswände (23) aufweist, die in einer Laufrichtung der Rohre (21) angeordnet sind und sich von einem zu dem anderen benachbarter Rohre (21) unter den mehreren Rohren (21) erstrecken, wobei die Rippe (22) in der Lage ist, Wärme mit den Rohren (21) auszutauschen, wobei die Wärmeübertragungswände (23), die in einer Laufrichtung der Rohre (21) angeordnet sind und sich von einem zu dem anderen benachbarter Rohre (21) unter den mehreren Rohren (21) erstrecken, eine Anordnung von Wärmeübertragungswänden (23) definieren, wobeidie Wärmeübertragungswände (23) jeweils aufweisen:ein erstes Wärmeübertragungsstück (23L), das zu einem ersten Kantenabschnitt (23a) führt, der auf einer Luvseite eines vorbeiströmenden Luftstroms (A) positioniert ist, undein zweites Wärmeübertragungsstück (23R), das zu einem zweiten Kantenabschnitt (23b) führt, der relativ zu dem ersten Kantenabschnitt (23a) zu einer Leeseite des Luftstroms (A) hin eingerückt ist,wobei der erste Kantenabschnitt (23a) und der zweite Kantenabschnitt (23b) beide auf der Luvseite des Luftstroms (A) angeordnet sind, undwobei das erste Wärmeübertragungsstück (23L) mindestens auf jeder anderen Lage der Anordnung von Wärmeübertragungswänden (23) auf beiden von einer Seite näher an einem Rohr (21) angeordnet ist und das zweite Wärmeübertragungsstück (23R) mindestens auf jeder anderen Lage der Anordnung von Wärmeübertragungswänden (23) auf beiden von einer Seite näher an dem anderen Rohr (21) benachbarter Rohre (21) unter den mehreren Rohren (21) angeordnet ist, so dass das erste Wärmeübertragungsstück (23L) und das zweite Wärmeübertragungsstück (23R) abwechselnd auf beiden Seiten erscheinen, undwobei ein erster Rippenabstand (P1) in einem vorbestimmten Bereich (U) auf der Luvbreite breiter gewählt ist als ein zweiter Rippenabstand (P2) in einem Bereich (D) auf der Leeseite relativ zu dem vorbestimmten Bereich (U), undgekennzeichnet dadurch, dass das erste Wärmeübertragungsstück (23L) und das zweite Wärmeübertragungsstück (23R) so vorgesehen sind, dass sie in einer vertikalen Richtung einander nicht überlappen.
- Wärmetauscher (10; 10a, 10b) nach Anspruch 1, wobei
die Wärmeübertragungswände (23) aufweisen
Wärmeübertragungs-Vereinfachungsmittel (28; 29) auf der Luvseite. - Wärmetauscher (10; 10a, 10b) nach einem der Ansprüche 1 oder 2, wobei
die Wärmeübertragungswände (23) umfassen
Wärmeübertragungs-Vereinfachungsmittel (28) auf der Leeseite. - Wärmetauscher (10; 10a, 10b) nach einem der Ansprüche 1 bis 3, wobei
das erste Wärmeübertragungsstück (23L) jeder der Wärmeübertragungswände (23) zu einem dritten Kantenabschnitt (23c) führt, der auf der Leeseite des Luftstroms (A) positioniert ist, und
jedes von dem zweiten Wärmeübertragungsstück (23R) ferner zu einem vierten Kantenabschnitt (23d) führt, der relativ zu dem dritten Kantenabschnitt (23c) zu der Luvseite hin eingerückt ist. - Wärmetauscherstruktur, die eine Ansammlung von mehreren Wärmetauschern (10; 10a, 10b) ist, die in einer Richtung eines vorbeiströmenden Luftstroms angeordnet sind, wobei die Wärmetauscher (10; 10a, 10b) aufweisen:mehrere Rohre (21), die in einer vorbestimmten Richtung angeordnet sind, wobei die Rohre (21) jeweils einen Strömungsweg (21a) aufweisen, durch den ein Kältemittel strömt, undeine gewellte Rippe (22), die zwischen benachbarten Rohren (21) unter mehreren Rohren (21) vorgesehen ist, wobei die Rippe (22) Wärme mit den Rohren (21) austauschen kann, wobeiunter den Wärmetauschern (10; 10a, 10b) einer, der am weitesten an einer Luvseite in der Richtung des Luftstroms (A) angeordnet ist, der Wärmetauscher (10; 10a, 10b) nach einem der Ansprüche 1 bis 4 ist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2013/004041 WO2014207785A1 (ja) | 2013-06-28 | 2013-06-28 | 熱交換器、熱交換器構造体、及び、熱交換器用のフィン |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3015808A1 EP3015808A1 (de) | 2016-05-04 |
EP3015808A4 EP3015808A4 (de) | 2016-07-27 |
EP3015808B1 true EP3015808B1 (de) | 2018-08-29 |
Family
ID=52141194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13888478.8A Active EP3015808B1 (de) | 2013-06-28 | 2013-06-28 | Wärmetauscher, wärmetauscherstruktur und rippe für wärmetauscher |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3015808B1 (de) |
JP (1) | JPWO2014207785A1 (de) |
WO (1) | WO2014207785A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11035623B2 (en) | 2018-03-02 | 2021-06-15 | Hitachi-Johnson Conrols Air Conditioning, Inc. | Heat exchanger, outdoor unit, refrigeration cycle device, and heat exchanger manufacturing method |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018008134A1 (ja) * | 2016-07-07 | 2018-01-11 | 三菱電機株式会社 | 熱交換器 |
JP6758968B2 (ja) * | 2016-07-14 | 2020-09-23 | 日立ジョンソンコントロールズ空調株式会社 | 熱交換器 |
JP6766722B2 (ja) | 2017-03-27 | 2020-10-14 | ダイキン工業株式会社 | 熱交換器又は冷凍装置 |
JP6741146B2 (ja) | 2017-03-27 | 2020-08-19 | ダイキン工業株式会社 | 熱交換器及び冷凍装置 |
JP6880901B2 (ja) | 2017-03-27 | 2021-06-02 | ダイキン工業株式会社 | 熱交換器ユニット |
JP6766723B2 (ja) | 2017-03-27 | 2020-10-14 | ダイキン工業株式会社 | 熱交換器又は冷凍装置 |
WO2018180934A1 (ja) | 2017-03-27 | 2018-10-04 | ダイキン工業株式会社 | 熱交換器及び冷凍装置 |
WO2021095087A1 (ja) * | 2019-11-11 | 2021-05-20 | 三菱電機株式会社 | 熱交換器および冷凍サイクル装置 |
WO2021095538A1 (ja) * | 2019-11-11 | 2021-05-20 | 三菱電機株式会社 | 熱交換器および冷凍サイクル装置並びにコルゲートフィンの製造方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS506455U (de) * | 1973-05-12 | 1975-01-23 | ||
JP2009270792A (ja) * | 2008-05-09 | 2009-11-19 | Sharp Corp | 熱交換器 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5916955U (ja) * | 1982-07-23 | 1984-02-01 | カルソニックカンセイ株式会社 | エバポレ−タ |
JPS5918179U (ja) * | 1982-07-26 | 1984-02-03 | カルソニックカンセイ株式会社 | エバポレ−タ |
JPS5994270U (ja) * | 1982-12-16 | 1984-06-26 | 昭和アルミニウム株式会社 | 蒸発器における結露水排出装置 |
JPH0396582U (de) * | 1989-12-27 | 1991-10-02 | ||
JPH06347185A (ja) * | 1993-06-07 | 1994-12-20 | Matsushita Refrig Co Ltd | 熱交換器 |
JP2002130973A (ja) * | 2000-10-25 | 2002-05-09 | Zexel Valeo Climate Control Corp | 熱交換器 |
JP2005106328A (ja) * | 2003-09-29 | 2005-04-21 | Sanden Corp | 熱交換装置 |
DE102005044754A1 (de) * | 2005-09-20 | 2007-03-29 | Behr Gmbh & Co. Kg | Mehrreihiger Wärmeübertrager und Wellrippe für denselben |
JP4674602B2 (ja) * | 2007-11-22 | 2011-04-20 | 株式会社デンソー | 熱交換器 |
IN2012DN00867A (de) * | 2009-09-16 | 2015-07-10 | Carrier Corp | |
JP5936297B2 (ja) | 2010-09-29 | 2016-06-22 | 三菱重工業株式会社 | 熱交換器 |
-
2013
- 2013-06-28 EP EP13888478.8A patent/EP3015808B1/de active Active
- 2013-06-28 JP JP2015523665A patent/JPWO2014207785A1/ja active Pending
- 2013-06-28 WO PCT/JP2013/004041 patent/WO2014207785A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS506455U (de) * | 1973-05-12 | 1975-01-23 | ||
JP2009270792A (ja) * | 2008-05-09 | 2009-11-19 | Sharp Corp | 熱交換器 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11035623B2 (en) | 2018-03-02 | 2021-06-15 | Hitachi-Johnson Conrols Air Conditioning, Inc. | Heat exchanger, outdoor unit, refrigeration cycle device, and heat exchanger manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPWO2014207785A1 (ja) | 2017-02-23 |
WO2014207785A1 (ja) | 2014-12-31 |
EP3015808A4 (de) | 2016-07-27 |
EP3015808A1 (de) | 2016-05-04 |
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