JP2000002492A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JP2000002492A JP2000002492A JP17012898A JP17012898A JP2000002492A JP 2000002492 A JP2000002492 A JP 2000002492A JP 17012898 A JP17012898 A JP 17012898A JP 17012898 A JP17012898 A JP 17012898A JP 2000002492 A JP2000002492 A JP 2000002492A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- exchange tube
- fluid hole
- heat exchanger
- outer fluid
- 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
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
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for heat-exchange media
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ノンフロン式ＣＯ
2サイクル等に利用される熱交換器に関する。TECHNICAL FIELD The present invention relates to a non-fluorocarbon type CO
It relates to a heat exchanger used for two cycles and the like.
【０００２】[0002]
【従来の技術】従来、熱交換器としては、内側流体孔及
び外側流体孔を有する熱交換管を備え、内側流体孔を流
通する媒体と、外側流体孔を流通する媒体との間で熱交
換を行うものが知られている。そしてこのような熱交換
器は、媒体として炭酸ガスを循環させるノンフロン式Ｃ
Ｏ2サイクル等にも利用されている。2. Description of the Related Art Conventionally, a heat exchanger has been provided with a heat exchange tube having an inner fluid hole and an outer fluid hole, and heat exchange between a medium flowing through the inner fluid hole and a medium flowing through the outer fluid hole. It is known to do. And such a heat exchanger is a non-fluorocarbon type C that circulates carbon dioxide as a medium.
It is also used for the O 2 cycle.
【０００３】また、この種の熱交換器に用いられる熱交
換管は、一般に、内側流体孔を構成する管材を、外側流
体孔を構成する管材に挿通して、二重管構造に形成して
いる。[0003] A heat exchange tube used in this type of heat exchanger is generally formed into a double tube structure by inserting a tube forming an inner fluid hole into a tube forming an outer fluid hole. I have.
【０００４】[0004]
【発明が解決しようとする課題】ところで、前述したよ
うな熱交換器にあっては、媒体に対する熱交換管の耐圧
性を十分に確保することが必要であり、内側流体孔及び
外側流体孔を構成する管材としては、主に銅製やチタン
製のものが採用されている。Incidentally, in the above-described heat exchanger, it is necessary to sufficiently secure the pressure resistance of the heat exchange tube against the medium, and the inner fluid hole and the outer fluid hole are formed. As a constituent tube material, a material mainly made of copper or titanium is adopted.
【０００５】しかしながら従来では、このような銅製や
チタン製の熱交換管に対し、アルミニウム合金製のコネ
クタ等が用いられている。そして、これらアルミニウム
合金製のコネクタ等を用いると、コネクタ接面の腐食が
進んで、熱交換管における耐久性の劣化、延いては媒体
洩出の原因となる虞があった。However, conventionally, an aluminum alloy connector or the like is used for such a heat exchange tube made of copper or titanium. When such an aluminum alloy connector or the like is used, corrosion of the contact surface of the connector progresses, and there is a possibility that the durability of the heat exchange tube may be deteriorated and the medium may leak out.
【０００６】この点、アルミニウム合金製の熱交換管を
用いると、一方で、そのような腐食の問題が改善され、
熱交換管はかなり軽量且つ康価になるが、他方で、耐圧
性を確保するには、各管材の板厚を厚くせざるを得ない
ため、熱交換効率が低下してしまう不都合があった。[0006] In this regard, the use of a heat exchange tube made of an aluminum alloy, on the other hand, improves the problem of such corrosion.
The heat exchange tubes are considerably lighter and more cost-effective, but on the other hand, in order to ensure the pressure resistance, the plate thickness of each tube material must be increased, which has the disadvantage of lowering the heat exchange efficiency. .
【０００７】そこで本発明は、このような問題に鑑み、
熱交換管の耐圧性と熱交換効率を向上することができる
熱交換器を提供することを目的としている。Accordingly, the present invention has been made in view of such a problem,
It is an object of the present invention to provide a heat exchanger capable of improving pressure resistance and heat exchange efficiency of a heat exchange tube.
【０００８】[0008]
【課題を解決するための手段】本願第１請求項に記載し
た発明は、内側流体孔及び外側流体孔を有する熱交換管
を備え、前記内側流体孔を流通する媒体と、前記外側流
体孔を流通する媒体との間で熱交換が行われる熱交換器
において、前記熱交換管は、前記内側流体孔の周囲に複
数の前記外側流体孔を一体に形成してなる構成の熱交換
器である。According to a first aspect of the present invention, there is provided a heat exchange tube having an inner fluid hole and an outer fluid hole, wherein a medium flowing through the inner fluid hole and the outer fluid hole are formed. In a heat exchanger in which heat exchange is performed with a flowing medium, the heat exchange tube is a heat exchanger having a configuration in which a plurality of the outer fluid holes are integrally formed around the inner fluid hole. .
【０００９】このように、本発明の熱交換器によると、
熱交換管は、内側流体孔の周囲に複数の外側流体孔を一
体に形成してなるので、熱交換管の耐圧性が向上する。Thus, according to the heat exchanger of the present invention,
Since the heat exchange tube is formed by integrally forming a plurality of outer fluid holes around the inner fluid hole, the pressure resistance of the heat exchange tube is improved.
【００１０】すなわち、従来の熱交換管は、内側流体孔
を構成する管材を、外側流体孔を構成する管材に挿通し
てなる二重管構造であるため、媒体に対する耐圧性を十
分に確保するには、それらの管材の板厚を厚くせざるを
得ず、その結果、熱交換率が低下してしまうという不都
合があったが、本発明の熱交換管は、内側流体孔の周囲
に複数の外側流体孔を一体に形成することにより耐圧性
が向上するので、そのような不都合が解消される。That is, since the conventional heat exchange tube has a double tube structure in which the tube material forming the inner fluid hole is inserted into the tube material forming the outer fluid hole, sufficient pressure resistance to the medium is ensured. Had the disadvantage of having to increase the plate thickness of these tube materials, and as a result, the heat exchange rate was reduced. Since the pressure resistance is improved by integrally forming the outer fluid holes of the above, such a disadvantage is solved.
【００１１】本願第２請求項に記載した発明は、請求項
１において、前記熱交換管は、アルミニウム合金を押し
出し成形してなる構成の熱交換器である。The invention described in the second aspect of the present invention is the heat exchanger according to the first aspect, wherein the heat exchange tube is formed by extruding an aluminum alloy.
【００１２】このように、本発明の熱交換器によると、
熱交換管は、アルミニウム合金を押し出し成形してなる
ので、容易に製造される。Thus, according to the heat exchanger of the present invention,
Since the heat exchange tube is formed by extruding an aluminum alloy, it is easily manufactured.
【００１３】更に、本発明のように、アルミニウム合金
製の熱交換管であれば、銅製やチタン製のものに対し、
アルミニウム合金製のコネクタとの接続において、コネ
クタ接面の腐食が改善され、耐久性の劣化及び媒体洩出
が防止される。また、熱交換管は、軽量且つ康価なもの
となる。Further, as in the present invention, a heat exchange tube made of an aluminum alloy can be made of copper or titanium.
In connection with the aluminum alloy connector, corrosion of the contact surface of the connector is improved, and deterioration of durability and leakage of the medium are prevented. Further, the heat exchange tube is light and has a good value.
【００１４】本願第３請求項に記載した発明は、請求項
１又は２において、前記熱交換管における内側流体孔の
横断面は、略円形である構成の熱交換器である。According to a third aspect of the present invention, in the heat exchanger according to the first or second aspect, the cross section of the inner fluid hole in the heat exchange tube is substantially circular.
【００１５】このように、本発明の熱交換器によると、
熱交換管における内側流体孔の横断面は、略円形である
ので、熱交換管の耐圧性が一層向上する。As described above, according to the heat exchanger of the present invention,
Since the cross section of the inner fluid hole in the heat exchange tube is substantially circular, the pressure resistance of the heat exchange tube is further improved.
【００１６】本願第４請求項に記載した発明は、請求項
１乃至３のいずれかにおいて、前記熱交換管における外
側流体孔の横断面は、略円形又は略楕円形である構成の
熱交換器である。According to a fourth aspect of the present invention, in the heat exchanger according to any one of the first to third aspects, a cross section of the outer fluid hole in the heat exchange pipe is substantially circular or substantially elliptical. It is.
【００１７】このように、本発明の熱交換器によると、
熱交換管における外側流体孔の横断面は、略円形又は略
楕円形であるので、熱交換管の耐圧性が一層向上する。Thus, according to the heat exchanger of the present invention,
Since the cross section of the outer fluid hole in the heat exchange tube is substantially circular or substantially elliptical, the pressure resistance of the heat exchange tube is further improved.
【００１８】特に、アルミニウム合金の押し出し成形に
より熱交換管を製造する場合は、複数の外側流体孔が略
楕円形であると、各流体孔の間にアルミニウム合金が廻
り込み易くなるので、その成形性が向上する。In particular, in the case of manufacturing a heat exchange tube by extrusion molding of an aluminum alloy, if the plurality of outer fluid holes are substantially elliptical, the aluminum alloy is likely to flow between the fluid holes. The performance is improved.
【００１９】また、略楕円形の外側流体孔は、内側流体
孔の外周に対し、その短径が垂直になるように配置する
と、これらの流体孔を流通する媒体同士がより接近する
ので、熱交換率が一層向上する。Further, when the outer fluid holes having a substantially elliptical shape are arranged so that their minor diameters are perpendicular to the outer periphery of the inner fluid holes, the media flowing through these fluid holes are closer to each other. The exchange rate is further improved.
【００２０】本願第５請求項に記載した発明は、請求項
１乃至４のいずれかにおいて、前記熱交換管の内外側流
体孔の一方又は双方の壁面は、少なくともこれら内外側
流体孔が対向する部位において凹凸形、例えばちぢらせ
た形又は波形に設けられている構成の熱交換器である。According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least one of the inner and outer fluid holes of the heat exchange tube faces at least one of the inner and outer fluid holes. The heat exchanger has a configuration in which the portions are provided in an uneven shape, for example, in a staggered shape or in a waveform.
【００２１】このように、本発明の熱交換器によると、
熱交換管の内外側流体孔の一方又は双方を凹凸形にした
ので、媒体と接する内外側流体孔の一方又は双方の表面
積を拡大することができ、熱交換率がより向上する。Thus, according to the heat exchanger of the present invention,
Since one or both of the inner and outer fluid holes of the heat exchange tube are made uneven, the surface area of one or both of the inner and outer fluid holes in contact with the medium can be increased, and the heat exchange rate is further improved.
【００２２】本願第６請求項に記載した発明は、請求項
１乃至５のいずれかにおいて、前記熱交換管における複
数の外側流体孔の横断面は、前記内側流体孔の中心に対
して点対称又はほぼ点対称である構成の熱交換器であ
る。According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the cross section of the plurality of outer fluid holes in the heat exchange tube is point-symmetric with respect to the center of the inner fluid hole. Or, it is a heat exchanger having a substantially point-symmetric configuration.
【００２３】このように、本発明の熱交換器によると、
熱交換管における複数の外側流体孔の横断面は、内側流
体孔の中心に対して点対称又はほぼ点対称であるので、
内側流体孔に対して複数の外側流体孔が効率良く配置さ
れ、熱交換管の耐圧性及び熱交換性が更に向上する。Thus, according to the heat exchanger of the present invention,
Since the cross section of the plurality of outer fluid holes in the heat exchange tube is point-symmetric or nearly point-symmetric with respect to the center of the inner fluid hole,
A plurality of outer fluid holes are efficiently arranged with respect to the inner fluid holes, and the pressure resistance and heat exchange properties of the heat exchange tube are further improved.
【００２４】[0024]
【発明の実施の形態】以下に、本発明の具体例を図面に
基いて詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００２５】図１乃至図３において、本例の熱交換器１
は、それぞれ媒体を流通する内側流体孔２１及び複数の
外側流体孔２２，２２を有するチューブ２と、前記内側
流体孔２１に連通接続されたコネクタ３，３と、前記複
数の外側流体孔２２，２２に連通接続されたコネクタ
４，４とを備え、前記内側流体孔２１を流通する媒体
と、前記外側流体孔２２を流通する媒体との間で熱交換
が行われるように構成している。In FIGS. 1 to 3, the heat exchanger 1 of this embodiment is shown.
Is a tube 2 having an inner fluid hole 21 and a plurality of outer fluid holes 22, 22 each of which circulates a medium, connectors 3, 3 connected to the inner fluid hole 21, and a plurality of outer fluid holes 22, The connector is provided with connectors 4 and 4 communicatively connected to the inner fluid hole 22, and heat is exchanged between the medium flowing through the inner fluid hole 21 and the medium flowing through the outer fluid hole 22.
【００２６】また、媒体としては炭酸ガスを採用してお
り、当該熱交換器１は、この炭酸ガスを循環させるノン
フロン式ＣＯ2サイクルに用いられている。Further, carbon dioxide is employed as a medium, and the heat exchanger 1 is used in a non-fluorocarbon type CO 2 cycle for circulating the carbon dioxide.
【００２７】本例の熱交換管２は、内側流体孔２１及び
複数の外側流体孔２２，２２を一体に形成した円管状も
のであって、アルミニウム合金を押し出し成形してな
り、その長手方向に亘る横断面においては、中央に略円
形の内側流体孔２１を設けるとともに、内側流通孔２１
の中心に対して３０度の間隔で６個の略楕円形の外側流
体孔２２，２２を設けている。The heat exchange tube 2 of this embodiment is a circular tube in which an inner fluid hole 21 and a plurality of outer fluid holes 22 are integrally formed, and is formed by extruding an aluminum alloy and extending in the longitudinal direction. In the cross section, a substantially circular inner fluid hole 21 is provided at the center, and the inner flow hole 21 is formed.
And six substantially elliptical outer fluid holes 22 are provided at intervals of 30 degrees with respect to the center of the outer fluid holes.
【００２８】すなわち、これらの複数の外側流体孔２
２，２２は、それぞれ等しい形状のものであって、内側
流体孔２１の中心に対して点対称又はほぼ点対称となる
ように配置している。That is, the plurality of outer fluid holes 2
Reference numerals 2 and 22 each have the same shape and are arranged so as to be point-symmetric or almost point-symmetric with respect to the center of the inner fluid hole 21.
【００２９】また、このような略楕円形の各外側流体孔
２２，２２は、内側流体孔２１の外周に対し、その短径
が垂直になるように配置しており、内側流体孔２１と外
側流体孔２２，２２とを流通する媒体同士がより接近す
るようにしている。Each of the substantially elliptical outer fluid holes 22 is disposed so that the minor axis thereof is perpendicular to the outer periphery of the inner fluid hole 21. The media flowing through the fluid holes 22, 22 are made closer to each other.
【００３０】更に、この熱交換管２においては、内側流
体孔２１及び複数の外側流体孔２２，２２の壁面を、横
断面において凹凸形、例えばちぢらせる形又は波形にす
ることによって、媒体と接する内側流体孔２１及び外側
流体孔２２，２２の表面積を拡大している。Further, in the heat exchange tube 2, the medium surface of the inner fluid hole 21 and the plurality of outer fluid holes 22 and 22 is made uneven in its cross section, for example, in a shape of a flick or a wave. The surface area of the inner fluid hole 21 and the outer fluid holes 22, 22 in contact with each other is enlarged.
【００３１】このように、内側流体孔２１及び外側流体
孔２２，２２の表面積を拡大する点では、それらの各横
断面は、完全な円形、楕円形でなくともよい。As described above, in order to increase the surface area of the inner fluid holes 21 and the outer fluid holes 22, their respective cross sections need not be perfectly circular or elliptical.
【００３２】尚、各外側流体路２２，２２は、内側流体
孔２１と対向する部位のみをちぢらせる又は波形にする
ことにより、熱交換管２の外周との間隔が狭くならない
ようにしている。すなわち、熱交換管２の強度及び耐圧
性が確保されるように構成している。Each of the outer fluid passages 22 and 22 is made to have only a portion opposed to the inner fluid hole 21 to be narrowed or corrugated so that the interval between the outer fluid passages 22 and the outer periphery of the heat exchange tube 2 is not narrowed. I have. That is, the heat exchange tube 2 is configured to ensure strength and pressure resistance.
【００３３】内側流体孔２１のコネクタ３，３は、それ
ぞれ、アルミニウム合金製の部材であって、熱交換管２
の両端にろう付けすることにより、外側流体孔２２，２
２を閉鎖するとともに、その内部に形成された継手路３
１が内側流体孔２１と合致するように設けており、媒体
送給用又は受給用の配管（図示は省略）と接続されてい
る。Each of the connectors 3 and 3 of the inner fluid hole 21 is a member made of an aluminum alloy.
Of the outer fluid holes 22 and 2
2 and a joint path 3 formed therein.
1 is provided so as to coincide with the inner fluid hole 21 and is connected to a medium feeding or receiving pipe (not shown).
【００３４】一方、外側流体孔２２，２２のコネクタ
４，４は、それぞれ、アルミニウム合金製の部材であっ
て、熱交換管２の両端近傍にろう付けすることにより設
けられており、媒体送給用又は受給用の配管（図示は省
略）と接続されている。On the other hand, the connectors 4, 4 of the outer fluid holes 22, 22, which are members made of an aluminum alloy, are provided by brazing near both ends of the heat exchange tube 2 to supply the medium. And a receiving or receiving pipe (not shown).
【００３５】すなわち、熱交換管２の両端近傍において
は、熱交換管２の外周部を削成することによって、複数
の外側流体孔２２，２２を部分的に破断しており、外側
流体孔２２，２２のコネクタは、それぞれ、複数の外側
流体孔２２，２２の破断部分を被覆するとともに、その
内部に形成された継手路４１が複数の外側流体孔２２，
２２と連通されるように設けられている。That is, in the vicinity of both ends of the heat exchange tube 2, the outer fluid holes 22 are partially cut by cutting the outer peripheral portion of the heat exchange tube 2, and the outer fluid holes 22 are cut off. , 22 respectively cover the broken portions of the plurality of outer fluid holes 22, 22, and the joint passage 41 formed therein has a plurality of outer fluid holes 22, 22.
It is provided so as to be communicated with 22.
【００３６】尚、熱交換管２及びコネクタ３，４のろう
付けは、本例ではトーチろう付けにより行っているが、
或は、これらの各部材を治具等を用いて一体に組み付け
て、この組み付け体を加熱処理することにより一括して
行うようにしてもよい。この場合、各部材には、予めろ
う材をクラッドしておくとよい。In this embodiment, the heat exchange tube 2 and the connectors 3 and 4 are brazed by torch brazing.
Alternatively, these members may be integrally assembled using a jig or the like, and the assembled body may be subjected to heat treatment so as to be performed collectively. In this case, each member may be clad with a brazing material in advance.
【００３７】このように、本例の熱交換器１によると、
内側流体孔２１のコネクタ３，３の一方から内側流体孔
２１に取り入れられた媒体は、内側流体孔２１を流通し
て、それらのコネクタ３，３の他方から排出される。ま
た、外側流体孔２２，２２のコネクタ４，４の一方から
外側流体孔２２，２２に取り入れられた媒体は、外側流
体孔２２，２２を流通して、それらのコネクタ４，４の
他方から排出される。Thus, according to the heat exchanger 1 of the present embodiment,
The medium taken into the inner fluid hole 21 from one of the connectors 3 and 3 of the inner fluid hole 21 flows through the inner fluid hole 21 and is discharged from the other of the connectors 3 and 3. The medium taken into the outer fluid holes 22, 22 from one of the connectors 4, 4 of the outer fluid holes 22, 22 is discharged from the other of the connectors 4, 4 through the outer fluid holes 22, 22. Is done.
【００３８】そして、内側流体孔２１を流通する媒体
と、複数の外側流体孔２２，２２を流通する媒体との間
で熱交換が行われる。Then, heat exchange is performed between the medium flowing through the inner fluid holes 21 and the medium flowing through the plurality of outer fluid holes 22.
【００３９】熱交換管２は、内側流体孔２１の周囲に複
数の外側流体孔２２，２２を一体に形成してなるので、
媒体に対する耐圧性は十分に確保される。The heat exchange tube 2 is formed by integrally forming a plurality of outer fluid holes 22 around the inner fluid hole 21.
The pressure resistance to the medium is sufficiently ensured.
【００４０】以上説明したように、本例の熱交換器によ
ると、熱交換管は、内側流体孔の周囲に複数の外側流体
孔を一体に形成してなるので、熱交換管の耐圧性を向上
することができる。As described above, according to the heat exchanger of this embodiment, the heat exchange tube is formed by integrally forming a plurality of outer fluid holes around the inner fluid hole, so that the heat exchange tube has a high pressure resistance. Can be improved.
【００４１】すなわち、従来の熱交換管は、内側流体孔
を構成する管材を、外側流体孔を構成する管材に挿通し
てなる二重管構造であるため、媒体に対する耐圧性を十
分に確保するには、それらの管材の板厚を厚くせざるを
得ず、その結果、熱交換率が低下してしまうという不都
合があったが、本例の熱交換管は、内側流体孔の周囲に
複数の外側流体孔を一体に形成することにより耐圧性を
向上することができるので、そのような不都合を解消す
ることができる。That is, since the conventional heat exchange tube has a double tube structure in which the tube material forming the inner fluid hole is inserted into the tube material forming the outer fluid hole, sufficient pressure resistance to the medium is ensured. Had the disadvantage of having to increase the plate thickness of these tubes, resulting in a decrease in the heat exchange rate. Since the pressure resistance can be improved by integrally forming the outer fluid holes of the above, such a disadvantage can be solved.
【００４２】また、本例の熱交換器によると、熱交換管
は、アルミニウム合金を押し出し成形してなるので、容
易に製造することができる。Further, according to the heat exchanger of this embodiment, since the heat exchange tube is formed by extruding an aluminum alloy, it can be easily manufactured.
【００４３】更に、本例のように、アルミニウム合金製
の熱交換管であれば、銅製やチタン製のものに対し、ア
ルミニウム合金製のコネクタとの接続において、コネク
タ接面の腐食を改善することができ、これにより耐久性
の劣化及び媒体洩出を防止することができる。また、熱
交換管は、軽量且つ康価なものにすることができる。Further, in the case of a heat exchange tube made of an aluminum alloy as in this embodiment, it is possible to improve the corrosion of the contact surface of the connector in connection with an aluminum alloy connector as compared with a copper or titanium tube. Therefore, deterioration of durability and leakage of the medium can be prevented. Further, the heat exchange tube can be made light and lightweight.
【００４４】また、本例の熱交換器によると、熱交換管
における内側流体孔の横断面は、略円形であるので、熱
交換管の耐圧性を一層向上することができる。Further, according to the heat exchanger of this embodiment, since the cross section of the inner fluid hole in the heat exchange tube is substantially circular, the pressure resistance of the heat exchange tube can be further improved.
【００４５】また、本例の熱交換器によると、熱交換管
における外側流体孔の横断面は、略円形又は略楕円形で
あるので、熱交換管の耐圧性を一層向上することができ
る。Further, according to the heat exchanger of this embodiment, since the cross section of the outer fluid hole in the heat exchange tube is substantially circular or substantially elliptical, the pressure resistance of the heat exchange tube can be further improved.
【００４６】特に、アルミニウム合金の押し出し成形に
より熱交換管を製造する場合は、複数の外側流体孔が略
楕円形であると、各流体孔の間にアルミニウム合金が廻
り込み易くなるので、その成形性を向上することができ
る。In particular, when a heat exchange tube is manufactured by extrusion molding of an aluminum alloy, if the plurality of outer fluid holes are substantially elliptical, the aluminum alloy is likely to flow between the fluid holes. Performance can be improved.
【００４７】また、略楕円形の外側流体孔は、内側流体
孔の外周に対し、その短径が垂直になるように配置する
と、これらの流体孔を流通する媒体同士がより接近する
ので、熱交換率を一層向上することができる。When the substantially elliptical outer fluid holes are arranged such that their minor diameters are perpendicular to the outer periphery of the inner fluid holes, the media flowing through these fluid holes are closer to each other, so that the heat flow is reduced. The exchange rate can be further improved.
【００４８】また、本例の熱交換器によると、熱交換管
の内側流体孔及び外側流体孔の一方又は双方の壁面は、
ちぢらせた又は波形にしたので、媒体と接する内側流体
孔及び外側流体孔の表面積を拡大することができ、熱交
換率をより向上することができる。According to the heat exchanger of this embodiment, one or both of the inner fluid hole and the outer fluid hole of the heat exchange tube has
Since the shape is made smaller or corrugated, the surface area of the inner fluid hole and the outer fluid hole in contact with the medium can be increased, and the heat exchange rate can be further improved.
【００４９】また、本例の熱交換器によると、熱交換管
における複数の外側流体孔の横断面は、内側流体孔の中
心に対して点対称又はほぼ点対称であるので、内側流体
孔に対して複数の外側流体孔を効率良く配置することが
でき、熱交換管の耐圧性及び熱交換性を更に向上するこ
とができる。Further, according to the heat exchanger of this embodiment, the cross section of the plurality of outer fluid holes in the heat exchange tube is point-symmetric or almost point-symmetric with respect to the center of the inner fluid hole. On the other hand, a plurality of outer fluid holes can be efficiently arranged, and the pressure resistance and heat exchange property of the heat exchange tube can be further improved.
【００５０】[0050]
【発明の効果】本願第１請求項に記載した発明は、内側
流体孔及び外側流体孔を有する熱交換管を備え、前記内
側流体孔を流通する媒体と、前記外側流体孔を流通する
媒体との間で熱交換が行われる熱交換器において、前記
熱交換管は、前記内側流体孔の周囲に複数の前記外側流
体孔を一体に形成してなる構成の熱交換器である。According to the first aspect of the present invention, there is provided a heat exchange tube having an inner fluid hole and an outer fluid hole, and a medium flowing through the inner fluid hole and a medium flowing through the outer fluid hole. In the heat exchanger in which heat exchange is performed between the first and second fluid exchangers, the heat exchanger tube is a heat exchanger having a configuration in which a plurality of the outer fluid holes are integrally formed around the inner fluid hole.
【００５１】このように、本発明の熱交換器によると、
熱交換管は、内側流体孔の周囲に複数の外側流体孔を一
体に形成してなるので、熱交換管の耐圧性を向上するこ
とができる。As described above, according to the heat exchanger of the present invention,
Since the heat exchange tube is formed by integrally forming a plurality of outer fluid holes around the inner fluid hole, the pressure resistance of the heat exchange tube can be improved.
【００５２】すなわち、従来の熱交換管は、内側流体孔
を構成する管材を、外側流体孔を構成する管材に挿通し
てなる二重管構造であるため、媒体に対する耐圧性を十
分に確保するには、それらの管材の板厚を厚くせざるを
得ず、その結果、熱交換率が低下してしまうという不都
合があったが、本発明の熱交換管は、内側流体孔の周囲
に複数の外側流体孔を一体に形成することにより耐圧性
を向上することができるので、そのような不都合を解消
することができる。That is, the conventional heat exchange tube has a double tube structure in which the tube material forming the inner fluid hole is inserted into the tube material forming the outer fluid hole, and therefore, the pressure resistance to the medium is sufficiently ensured. Had the disadvantage of having to increase the plate thickness of these tube materials, and as a result, the heat exchange rate was reduced. Since the pressure resistance can be improved by integrally forming the outer fluid holes of the above, such a disadvantage can be solved.
【００５３】本願第２請求項に記載した発明は、請求項
１において、前記熱交換管は、アルミニウム合金を押し
出し成形してなる構成の熱交換器である。The invention described in the second aspect of the present invention is the heat exchanger according to the first aspect, wherein the heat exchange tube is formed by extruding an aluminum alloy.
【００５４】このように、本発明の熱交換器によると、
熱交換管は、アルミニウム合金を押し出し成形してなる
ので、容易に製造することができる。As described above, according to the heat exchanger of the present invention,
Since the heat exchange tube is formed by extruding an aluminum alloy, it can be easily manufactured.
【００５５】更に、本発明のように、アルミニウム合金
製の熱交換管であれば、銅製やチタン製のものに対し、
アルミニウム合金製のコネクタとの接続において、コネ
クタ接面の腐食を改善することができ、耐久性の劣化及
び媒体洩出を防止することができる。また、熱交換管
は、軽量且つ康価なものにすることができる。Further, as in the present invention, if the heat exchange tube is made of aluminum alloy, the heat exchange tube is made of copper or titanium.
In connection with a connector made of an aluminum alloy, corrosion of the connector contact surface can be improved, and deterioration of durability and leakage of a medium can be prevented. Further, the heat exchange tube can be made light and lightweight.
【００５６】本願第３請求項に記載した発明は、請求項
１又は２において、前記熱交換管における内側流体孔の
横断面は、略円形である構成の熱交換器である。According to a third aspect of the present invention, in the heat exchanger according to the first or second aspect, a cross section of the inner fluid hole in the heat exchange tube is substantially circular.
【００５７】このように、本発明の熱交換器によると、
熱交換管における内側流体孔の横断面は、略円形である
ので、熱交換管の耐圧性を一層向上することができる。As described above, according to the heat exchanger of the present invention,
Since the cross section of the inner fluid hole in the heat exchange tube is substantially circular, the pressure resistance of the heat exchange tube can be further improved.
【００５８】本願第４請求項に記載した発明は、請求項
１乃至３のいずれかにおいて、前記熱交換管における外
側流体孔の横断面は、略円形又は略楕円形である構成の
熱交換器である。According to a fourth aspect of the present invention, in the heat exchanger according to any one of the first to third aspects, a cross section of the outer fluid hole in the heat exchange tube is substantially circular or substantially elliptical. It is.
【００５９】このように、本発明の熱交換器によると、
熱交換管における外側流体孔の横断面は、略円形又は略
楕円形であるので、熱交換管の耐圧性を一層向上するこ
とができる。As described above, according to the heat exchanger of the present invention,
Since the cross section of the outer fluid hole in the heat exchange tube is substantially circular or substantially elliptical, the pressure resistance of the heat exchange tube can be further improved.
【００６０】特に、アルミニウム合金の押し出し成形に
より熱交換管を製造する場合は、複数の外側流体孔が略
楕円形であると、各流体孔の間にアルミニウム合金が廻
り込み易くなるので、その成形性を向上することができ
る。In particular, in the case of manufacturing a heat exchange tube by extrusion molding of an aluminum alloy, if the plurality of outer fluid holes are substantially elliptical, the aluminum alloy can easily flow between the fluid holes. Performance can be improved.
【００６１】また、略楕円形の外側流体孔は、内側流体
孔の外周に対し、その短径が垂直になるように配置する
と、これらの流体孔を流通する媒体同士がより接近する
ので、熱交換率を一層向上することができる。When the outer fluid holes having a substantially elliptical shape are arranged so that their minor diameters are perpendicular to the outer periphery of the inner fluid holes, the media flowing through these fluid holes are closer to each other, so that the heat flow is reduced. The exchange rate can be further improved.
【００６２】本願第５請求項に記載した発明は、請求項
１乃至４のいずれかにおいて、前記熱交換管の内外側流
体孔の一方又は双方の壁面は、少なくともこれら内外側
流体孔が対向する部位において凹凸形、例えばちぢらせ
た形又は波形に設けられている構成の熱交換器である。According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least one of the inner and outer fluid holes of the heat exchange tube faces at least one of the inner and outer fluid holes. The heat exchanger has a configuration in which the portions are provided in an uneven shape, for example, in a staggered shape or in a waveform.
【００６３】このように、本発明の熱交換器によると、
熱交換管の内外側流体孔の一方又は双方を凹凸形にした
ので、媒体と接する内外側流体孔の一方又は双方の表面
積を拡大することができ、熱交換率をより向上すること
ができる。Thus, according to the heat exchanger of the present invention,
Since one or both of the inner and outer fluid holes of the heat exchange tube are made uneven, the surface area of one or both of the inner and outer fluid holes in contact with the medium can be increased, and the heat exchange rate can be further improved.
【００６４】本願第６請求項に記載した発明は、請求項
１乃至５のいずれかにおいて、前記熱交換管における複
数の外側流体孔の横断面は、前記内側流体孔の中心に対
して点対称又はほぼ点対称である構成の熱交換器であ
る。According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the cross section of the plurality of outer fluid holes in the heat exchange tube is point-symmetric with respect to the center of the inner fluid hole. Or, it is a heat exchanger having a substantially point-symmetric configuration.
【００６５】このように、本発明の熱交換器によると、
熱交換管における複数の外側流体孔の横断面は、内側流
体孔の中心に対して点対称又はほぼ点対称であるので、
内側流体孔に対して複数の外側流体孔を効率良く配置す
ることができ、熱交換管の耐圧性及び熱交換性を更に向
上することができる。As described above, according to the heat exchanger of the present invention,
Since the cross section of the plurality of outer fluid holes in the heat exchange tube is point-symmetric or nearly point-symmetric with respect to the center of the inner fluid hole,
A plurality of outer fluid holes can be efficiently arranged with respect to the inner fluid holes, and the pressure resistance and heat exchange properties of the heat exchange tube can be further improved.
【図１】 本発明の具体例に係り、熱交換器を示す概要
図である。FIG. 1 is a schematic diagram showing a heat exchanger according to a specific example of the present invention.
【図２】 本発明の具体例に係り、図１におけるＡ−Ａ
矢視断面図であって、熱交換管を示す横断面図である。FIG. 2 relates to a specific example of the present invention,
FIG. 4 is a cross-sectional view taken along an arrow, showing a heat exchange tube.
【図３】 本発明の具体例に係り、図１におけるＢ−Ｂ
矢視断面図であって、熱交換管及び外側流体孔のコネク
タを示す横断面図である。FIG. 3 relates to a specific example of the present invention,
It is arrow sectional drawing, and is a cross-sectional view which shows the connector of a heat exchange tube and an outer fluid hole.
１ 熱交換器 ２ 熱交換管 ３ 内側流体孔のコネクタ ４ 外側流体孔のコネクタ ２１ 内側流体孔 ２２ 外側流体孔 ３１ 継手路 ４１ 継手路 REFERENCE SIGNS LIST 1 heat exchanger 2 heat exchange tube 3 connector for inner fluid hole 4 connector for outer fluid hole 21 inner fluid hole 22 outer fluid hole 31 joint path 41 joint path
Claims (6)
換管を備え、前記内側流体孔を流通する媒体と、前記外
側流体孔を流通する媒体との間で熱交換が行われる熱交
換器において、 前記熱交換管は、前記内側流体孔の周囲に複数の前記外
側流体孔を一体に形成してなることを特徴とする熱交換
器。1. A heat exchanger comprising a heat exchange tube having an inner fluid hole and an outer fluid hole, wherein heat exchange is performed between a medium flowing through the inner fluid hole and a medium flowing through the outer fluid hole. The heat exchanger according to claim 1, wherein the heat exchange tube is formed by integrally forming the plurality of outer fluid holes around the inner fluid hole.
し出し成形してなることを特徴とする請求項１記載の熱
交換器。2. The heat exchanger according to claim 1, wherein the heat exchange tube is formed by extruding an aluminum alloy.
面は、略円形であることを特徴とする請求項１又は２記
載の熱交換器。3. The heat exchanger according to claim 1, wherein a cross section of the inner fluid hole in the heat exchange tube is substantially circular.
面は、略円形又は略楕円形であることを特徴とする請求
項１乃至３のいずれか記載の熱交換器。4. The heat exchanger according to claim 1, wherein a cross section of the outer fluid hole in the heat exchanger tube is substantially circular or substantially elliptical.
双方の壁面は、少なくともこれら内外側流体孔が対向す
る部位において凹凸形に設けられていることを特徴とす
る請求項１乃至４のいずれか記載の熱交換器。5. The heat exchange tube according to claim 1, wherein one or both wall surfaces of the inner and outer fluid holes are provided in an uneven shape at least at a portion where the inner and outer fluid holes oppose each other. The heat exchanger according to any one of the above.
の横断面は、前記内側流体孔の中心に対して点対称又は
ほぼ点対称であることを特徴とする請求項１乃至５のい
ずれか記載の熱交換器。6. The heat exchange pipe according to claim 1, wherein a cross section of the plurality of outer fluid holes is point-symmetric or substantially point-symmetric with respect to a center of the inner fluid hole. The heat exchanger as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012898A JP2000002492A (en) | 1998-06-17 | 1998-06-17 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012898A JP2000002492A (en) | 1998-06-17 | 1998-06-17 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000002492A true JP2000002492A (en) | 2000-01-07 |
Family
ID=15899179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17012898A Pending JP2000002492A (en) | 1998-06-17 | 1998-06-17 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000002492A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011021636A1 (en) * | 2009-08-21 | 2011-02-24 | ダイキン工業株式会社 | Heat exchanger and refrigeration device with same |
| JP2011043289A (en) * | 2009-08-21 | 2011-03-03 | Daikin Industries Ltd | Heat exchanger and refrigerating device including the same |
| JP6029686B2 (en) * | 2012-12-11 | 2016-11-24 | 三菱電機株式会社 | Double tube heat exchanger and refrigeration cycle equipment |
-
1998
- 1998-06-17 JP JP17012898A patent/JP2000002492A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011021636A1 (en) * | 2009-08-21 | 2011-02-24 | ダイキン工業株式会社 | Heat exchanger and refrigeration device with same |
| JP2011043289A (en) * | 2009-08-21 | 2011-03-03 | Daikin Industries Ltd | Heat exchanger and refrigerating device including the same |
| JP2011064448A (en) * | 2009-08-21 | 2011-03-31 | Daikin Industries Ltd | Heat exchanger and refrigeration device including the same |
| JP6029686B2 (en) * | 2012-12-11 | 2016-11-24 | 三菱電機株式会社 | Double tube heat exchanger and refrigeration cycle equipment |
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