EP3062056B1 - A heat exchanger and a manufacturing method for the same - Google Patents
A heat exchanger and a manufacturing method for the same Download PDFInfo
- Publication number
- EP3062056B1 EP3062056B1 EP16157160.9A EP16157160A EP3062056B1 EP 3062056 B1 EP3062056 B1 EP 3062056B1 EP 16157160 A EP16157160 A EP 16157160A EP 3062056 B1 EP3062056 B1 EP 3062056B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layered body
- rubber
- heat exchanger
- heat transfer
- 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
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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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/10—Arrangements for sealing the margins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2230/00—Sealing means
Definitions
- the present invention relates to a static heat exchanger and a manufacturing method for the same.
- a heat exchanger according to the preamble of claim 1 is known from US 5 322 117 A .
- a heat exchanger recovers the heat of the exhaust air discharged from a drying furnace etc., when ventilating the drying furnace in a factory, etc., a loss of energy can decrease and it can heighten an energy saving effect. That is, since a heat is exchanged between the exhaust air of high temperature in such a drying furnace, etc. in the factory and the air of normal temperature in such the open air, and the energy for heating the open air can be saved by supplying the open air of which the temperature rose to the drying furnace, etc.
- a cross flow typed heat exchanger which is manufactured by laminating aluminum heat transfer sheets is preferable in consideration of heat recovering efficiency.
- a heat exchanger which is manufactured by laminating rectangular heat transfer sheets is well-known.
- an airtight holding means for a rectangular corner part is important.
- an epoxy resin is used ordinarily, and a caulking agent containing silicone is used especially when a heat resistance is required.
- a heat exchange layered body with a large percentage of void may be used as a heat exchanger.
- a caulking agent or a paint of fluorocarbon rubber system is used for airtight holding of a rectangular corner part of the layered body instead of using the caulking agent containing silicone in consideration of the above-stated point of the coating defect, the airtight holding effect may be lost since a coat of the caulking agent or the paint may have a localized necking by evaporation of so much of solvent contained in the caulking agent.
- the present invention provides a heat exchanger with a fully airtightness at a corner potion of a layered body of the heat exchanger on which a plurality of heat transfer sheets laminated and to provide a manufacturing method for a heat exchanger such that an effect of the airtight holding occurs easily on the corner portion of the layered body of the heat exchanger only by heating once.
- the heat exchanger disclosed in the present invention can secure airtightness for a corner portion where leak of a fluid as object of a heat exchange tends to occur.
- the airtightness can be achieved by inserting a rubber in which a vulcanizing agent is mixed in an unvulcanized state to the corner portion and by heating the rubber with the rubber being not pressurized to proceed vulcanization of the rubber simultaneously and to inflate the rubber.
- a heat exchanger and a manufacturing method according to the invention are defined in claims 1 and 5, respectively.
- a manufacturing method of the heat exchanger of the present invention a plurality of heat transfer sheets are laminated, a rubber in which a vulcanizing agent is mixed in an unvulcanized state is inserted into a clearance between a corner portion of a layered body of the heat exchanger and a corner member without heating, and the rubber in an unvulcanized state is foamed to inflate by heating once. Therefore, since the rubber which is foamed to inflate advances into a clearance in the corner portion of the layered body, the layered body has an effect of its airtightness.
- the method of the present invention has some advantages as follows.
- the sheet has no deformation since the sheet is not heated. Since it is not necessary to use an agent including silicon as airtight holding means and the layered body has airtightness easily and securely, silicon as a material used for manufacturing the heat exchanger is excluded and a defect of painting can be suppressed.
- the rubber By forming a notch at a connecting portion of the layered body of the heat transfer sheet or at a connecting portion of the corner member and inserting a rubber in which a vulcanizing agent is mixed in an unvulcanized state to the notch, the rubber can be arranged adequately in a state of a successive stick-like form at the notches formed successively in a state of recess like form on the layered body or the corner member. Since an inflated fluorocarbon rubber proceeds into the clearance between each of the heat transfer sheets in the state where the rubber is vulcanized by heating and is foamed by a gas generated by vulcanizing to be inflated, a better condition of airtight holding can be certainly obtained.
- a heat exchange layered body which is formed by laminating rectangle shaped heat transfer sheets are connected each other to corner members which have a L-shaped section, a rubber in which a vulcanizing agent is mixed in an unvulcanized state, for example, a fluorocarbon rubber is inserted between the corner member and the corner potion of the heat exchange layered body, and the rubber is made to inflate and to be inserted inside into many of clearances in the heat exchange layered body by heating to vulcanize.
- a vulcanizing agent for example, a fluorocarbon rubber
- a heat exchange layered body 11 is formed by laminating a plurality of heat transfer sheets 16 such as an aluminum sheet. Also, the heat exchange layered body 11 is assembled to a casing having metal corner members 12, a top plate 13 and a sole plate 14 which are connected by bolt, a rivet, etc.
- a heat transfer sheet 16 besides an aluminum sheet, when a corrosive material is included in the air to be heat-exchanged, a corrosive metal sheet such as an aluminum sheet on which a corrosion coating is applied and a stainless steel sheet, etc. may be used.
- the schematic structure of the heat exchange layered body 11 is shown in Fig. 2 .
- FIG. 4 An example of the heat transfer sheet 16 used for the heat exchange layered body 11 is shown in Fig. 4 .
- a rib 17 is mounted on the heat transfer sheet 16 to extend to an upper side of the sheet so that a direction of the open air flow B and a direction of the circulation air flow are offset at 90 degrees.
- concave-convex ribs are mounted on the heat transfer sheet at an angle of 90 degrees.
- an optimal thing may be suitably chosen in consideration of a heat exchange efficiency, pressure loss, etc.
- FIG. 5 an assemble process of the heat transfer layered body 11 of the heat exchanger and the corner member of the casing used for this preferred embodiment is shown as a top view. Since the corner member is made of metallic material and has an equilateral L like shaped section, the corner member has a fully strength as a part of the casing.
- the corner member may have a non-equilateral L like shaped section and an opening angle of the L like shape of the corner member may be determined arbitrarily to fit to the angle of the corner portion of the heat transfer layered body. If the corner member has an L like shape as a whole, a section of the corner member may have a hollow. Also, the heat transfer layered body 11 has a plurality of the end portion 15 processed by double bending every other one. Therefore, in a top view, the layered body has a rectangular portion of notch shape at each of corners of the body.
- a stick like shaped unvulcanized rubber 18 in which a vulcanizing agent is mixed is inserted between the heat exchange layered body 11 and the corner member 12 so that the rubber may contact the above notch like portion.
- a notch is formed in either the heat exchange layered body or the corner member and a recess portion is formed on a basis of formation of the notch.
- the stick like unvalucanized rubber is inserted into the recess portion in a state where heating is not carried out. After inserting the rubber, the rubber is heated to vulcanize. By foaming with the vulcanization of the rubber, the rubber is inflated to close the clearance so that the airtight is secured.
- a leak prevention member 19 such as a fluoride rubber sheet is inserted between a sole plate 14 and a corner member 12, and the sole plate 14 and the corner member 12 are fixed with a bolt, etc. After all of the four corner members 12 and the sole plates 14 are fixed, a top plate 13 is fixed similarly.
- the unvulcanized rubber 18 is vulcanized by carrying out heating the assembled heat exchanger and keeping at 175 through 200 °C for 1 hour.
- the unvulcanized rubber 18 If the unvulcanized rubber 18 is heated in an open state, it foams with vapor and carbon dioxide which are generated by vulcanization.
- the rubber can advance into inside of many of clearances of the heat exchange layered body 11, and it becomes possible to aim at the airtight state between the corner member 12 and the corner portion of the heat exchange layered body 11. Also, since the rubber is in an opened condition and, moreover, is porous by foaming, the gas generated at a time of vulcanization is easy to emit from the rubber and the vulcanization of the rubber can be completed for a short time without a secondary vulcanization for a long time.
- a leak prevention members 20 such as angled string like fluorocarbon rubber is pushed to insert between the heat exchange layered body 11 and a top plate 13 and between the heat exchange layered body 11 and the sole plate 14 so that the rubber fills between them.
- a rubber based coating for example, fluorocarbon rubber paint, is applied to the portions and the airtight effect is made high thereby.
- the rubber based coating is applied between the corner member 12 and top plate 13 and between the corner member 12 and the sole plate 14 into which the leak prevention member 19 is inserted.
- the coating After a completion of application of the rubber based coating, the coating is allowed to stand at room temperature for 20 to 30 minutes, and the coating holds at 200 °C for 1 hour to come to cure. This process may be carried out in advance of the vulcanization by heating of the unvulcanized rubber 18.
- the conventional general usage for the unvulcanized rubber is explained as follows.
- the unvulcanized rubber in which the vulcanizing agent is mixed is pressed with heating in a metallic mold (it is 10 to 45 minutes at 170 to 180 °C). Thereby, the rubber is formed and a primary vulcanization is carried out. Then, after taking out the rubber from the metallic mold, physical properties of the rubber are stabilized by heating again for a secondary vulcanization (it is 24 hours at 200 to 230 °C). Therefore, a finished product is obtained after the above secondary vulcanization.
- a usage of the unvulcanized rubber of the present invention is different from the above conventional usage.
- a method of the present invention focusing on that the rubber is foamed by the gas generated by a vulcanization reaction if the unvulcanized rubber mixed with the vulcanizing agent is heated rapidly, the corner portion of the heat transfer layered body, which has many of clearances, can be structured simply and securely with airtight.
- FIG. 9 Another preferred embodiment of the heat exchanger concerning of the present invention is shown in Fig. 9 .
- This heat exchanger is a rectangular cross typed one in which a flat plate like heat transfer sheet and a heat transfer sheet processed with waves as a spacer are laminated to be orthogonal alternately. Also, similarly to the 1st preferred embodiment, as to this heat exchanger, an airtight holding is realizable by heating of the unvulcanized rubber 18 mounted between the heat exchange layered body 11 and the corner member 12.
- the notch at the connecting portion of the corner member 12 and the corner portion of the heat exchange layered body 11 is formed as shown in Fig. 10 (a) .
- the notch is not restricted as shown in the above Fig 10 (a) , and it is possible to use various forms shown in Fig. 10 (b) through (f) .
- a form of the notch other than such illustrated forms may be adopted arbitrarily.
- the heat exchanger of the present invention is manufactured by the above methods and can be used in the painting factory where materials containing silicone cannot be used in a passage for air supply, a film printing drier, a metal sheet printing drier for drink cans and other driers. Furthermore, it can be used as heat exchanger in a room where a poor contact of an electric relay, etc. may occur due to silicone atmosphere.
- the heat exchanger is explained as of a cross flow type as shown in Fig. 12 .
- the present invention is not restricted in this type.
- the present invention can also be realized in a counter flow type and an oblique alternating current flow type.
- the present invention can provide the heat exchanger with a high airtight nature even at a place where a material which contains silicone cannot be used.
- the present invention provides a heat exchanger.
- the heat exchanger can exchange heat at a place where a material containing silicone cannot be used.
- the heat exchanger of the present invention has a heat exchange layered body which is secured by a corner member 12, a top plate 13, a sole plate 14.
- An unvulcanized rubber 18 in which a vulcanized agent is mixed is inserted into a connecting portion between the corner member 12 and a corner portion of the heat exchange layered body.
- the unvulcanized rubber 18 is made to foam and inflate by heating.
- the heat exchanger has a high airtightness in a short time in a process of its manufacturing and can be used in a painting factory, etc. where a material including silicon cannot be used.
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)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015036792A JP6466202B2 (ja) | 2015-02-26 | 2015-02-26 | 熱交換器の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3062056A1 EP3062056A1 (en) | 2016-08-31 |
| EP3062056B1 true EP3062056B1 (en) | 2017-11-01 |
Family
ID=55524096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16157160.9A Active EP3062056B1 (en) | 2015-02-26 | 2016-02-24 | A heat exchanger and a manufacturing method for the same |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3062056B1 (ja) |
| JP (1) | JP6466202B2 (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020076552A (ja) * | 2018-11-09 | 2020-05-21 | 梅津 健兒 | アルミプレート空気熱交換器 |
| AU2022230856A1 (en) * | 2021-03-03 | 2023-10-12 | Daikin Industries, Ltd. | Heat exchanger and air treatment device |
| CN115013957A (zh) * | 2021-03-03 | 2022-09-06 | 大金工业株式会社 | 热交换器及空气处理设备 |
| KR102552970B1 (ko) * | 2023-01-09 | 2023-07-10 | 이형규 | 현열교환기 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815877U (ja) * | 1981-07-17 | 1983-01-31 | 株式会社日本自動車部品総合研究所 | 全熱交換器 |
| DE3242361C3 (de) * | 1982-11-16 | 1994-07-28 | Behr Gmbh & Co | Ölkühler in Scheibenbauweise |
| US4596285A (en) * | 1985-03-28 | 1986-06-24 | North Atlantic Technologies, Inc. | Heat exchanger with resilient corner seals |
| JPH05118784A (ja) * | 1991-10-29 | 1993-05-14 | Mitsubishi Electric Corp | 熱交換器 |
| US5322117A (en) * | 1993-04-28 | 1994-06-21 | Research Products Corporation | Heat exchanger media frame |
| JPH07305987A (ja) * | 1994-05-10 | 1995-11-21 | Yanmar Diesel Engine Co Ltd | 多管式熱交換器 |
| JPH10267579A (ja) * | 1997-03-21 | 1998-10-09 | Daikin Ind Ltd | 熱交換エレメント |
| JP2001341206A (ja) | 2000-06-05 | 2001-12-11 | Koyo Kagaku Kk | プレート式熱交換器用ガスケットの製造方法及びそのガスケット |
| JP2002293976A (ja) * | 2001-04-03 | 2002-10-09 | Nitto Denko Corp | Ｅｐｄｍ系難燃発泡体 |
| JP2003171490A (ja) * | 2001-12-05 | 2003-06-20 | Nitto Denko Corp | シール用ゴム発泡体 |
| JP6091871B2 (ja) * | 2012-12-10 | 2017-03-08 | 三井化学株式会社 | エチレン・α−オレフィン・非共役ポリエン共重合体組成物、並びに、この組成物から得られる架橋発泡体およびその製造方法 |
-
2015
- 2015-02-26 JP JP2015036792A patent/JP6466202B2/ja active Active
-
2016
- 2016-02-24 EP EP16157160.9A patent/EP3062056B1/en active Active
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016156603A (ja) | 2016-09-01 |
| JP6466202B2 (ja) | 2019-02-06 |
| EP3062056A1 (en) | 2016-08-31 |
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