JP4418246B2 - Heat exchanger - Google Patents

Description

本発明は、車両用空調装置などに使用される凝縮器などの熱交換器に関する。   The present invention relates to a heat exchanger such as a condenser used in a vehicle air conditioner or the like.

従来の熱交換器には、特許文献１〜３に開示されるようなものがある。この種の熱交換器は、対向する一対のヘッダタンクに、複数多段に配置される扁平チューブの両端開口部を連通接続して構成されている。多段に配置される扁平チューブ間にはコルゲート状のアウターフィンが介在している。   Conventional heat exchangers include those disclosed in Patent Documents 1 to 3. This type of heat exchanger is configured by connecting and connecting both end openings of flat tubes arranged in multiple stages to a pair of opposing header tanks. Corrugated outer fins are interposed between the flat tubes arranged in multiple stages.

両ヘッダタンクは、パイプと、該パイプの両端開口部を閉塞する閉塞部材と、を備えている。パイプは、チューブを差込むためのチューブ差込口を複数多段に備えている。また、パイプ内には、内部を長手方向に区切る仕切板を備えている。   Both header tanks are provided with a pipe and a closing member that closes both ends of the pipe. The pipe is provided with a plurality of multi-stage tube insertion ports for inserting tubes. In addition, a partition plate that divides the interior in the longitudinal direction is provided in the pipe.

このように構成された熱交換器では、冷媒入口用コネクタを通じて一方のヘッダタンクに導入される冷媒が、一方のヘッダタンクと他方のヘッダタンクとの間を蛇行するようにチューブ内を流れ、最終的に何れかのヘッダタンクに固定された冷媒出口用コネクタを通じて排出される。このとき、熱交換器内を流れる冷媒は、チューブ間のアウターフィンの隙間を通風する空気と熱交換される。例えば、放熱器または凝縮器などとして用いる場合には冷媒は冷却され、蒸発器などとして用いられる場合には冷媒は加熱される。   In the heat exchanger configured as described above, the refrigerant introduced into one header tank through the refrigerant inlet connector flows in the tube so as to meander between one header tank and the other header tank. Thus, the refrigerant is discharged through a refrigerant outlet connector fixed to any one of the header tanks. At this time, the refrigerant flowing in the heat exchanger is heat-exchanged with the air passing through the gap between the outer fins between the tubes. For example, when used as a radiator or condenser, the refrigerant is cooled, and when used as an evaporator, the refrigerant is heated.

熱交換器の製造方法は、チューブとアウターフィンとを交互に積層した状態で、このチューブをヘッダタンクのチューブ差込み孔に差込んで仮組体とし、この仮組体を炉内に入れ、所定温度で各部材のコア材の表面のロー材を溶かした後冷やすことで、ロー材により各部材を一体的に固定して、所望の熱交換器を得る。

特開平７−２７４９６号公報 特開平１０−２２７５９３号公報 特開２００３−９４１３５号公報 In the heat exchanger manufacturing method, in a state where the tubes and the outer fins are alternately laminated, the tubes are inserted into the tube insertion holes of the header tank to form a temporary assembly, and the temporary assembly is placed in a furnace. By melting the brazing material on the surface of the core material of each member at a temperature and then cooling it, the respective members are fixed integrally with the brazing material to obtain a desired heat exchanger.

Japanese Patent Laid-Open No. 7-27496 JP-A-10-227593 JP 2003-94135 A

前記従来技術にあっては、熱交換器を構成する各部材は外周面にロー材層を備えるため、ロー付け時には、溶けたロー材が熱交換器全体で流動する。特に、溶けたロー材は、各所の存在する接合面に、毛細管現象により流れ込む。   In the prior art, since each member constituting the heat exchanger has a brazing material layer on the outer peripheral surface, the melted brazing material flows in the entire heat exchanger during brazing. In particular, the melted brazing material flows into the joint surface where the various parts exist by capillary action.

ここで、一般に、熱交換器コア部ではチューブとアウターフィンとの接合面が多く存在し、熱交換器コア部における総接合面積がヘッダタンクにおける総接合面積よりもかなり広い。そのため、ロー付け時には、熱交換器コア部へヘッダタンクのロー材が流失していくことが懸念される。この場合、（ｉ）ヘッダタンクを構成する部材同士のロー付けの安定性や、（ｉｉ）ヘッダタンクとチューブとのロー付けの安定性や、（ｉｉｉ）ヘッダタンクとコネクタとのロー付けの安定性が、低下する虞がある。   Here, in general, there are many joint surfaces between the tube and the outer fin in the heat exchanger core part, and the total joint area in the heat exchanger core part is considerably larger than the total joint area in the header tank. Therefore, at the time of brazing, there is a concern that the brazing material of the header tank will be washed away to the heat exchanger core. In this case, (i) stability of brazing between members constituting the header tank, (ii) stability of brazing between the header tank and the tube, and (iii) stability of brazing between the header tank and the connector. There is a possibility that the property may be lowered.

本発明はこのような従来技術をもとに為されたものであって、その目的は、ロー付け時に、熱交換器コア部とヘッダタンクとの間のロー材の流動を防止することである。   The present invention has been made based on such a conventional technique, and its purpose is to prevent the flow of brazing material between the heat exchanger core and the header tank during brazing. .

請求項１の発明は、アウターフィンと、前記アウターフィンと交互に積層された複数のチューブと、前記各チューブの開口端部が挿入されて各チューブと連通するヘッダタンクと、を備えた熱交換器において、前記ヘッダタンクは、互いに組合せ方向に向けて開口を有する箱状の第１部材と箱状の第２部材とからなり、前記第２部材が前記チューブの端部を挿入するチューブ挿入口を備えずに前記第１部材が前記チューブ挿入口を備え、前記第１部材が内周面全体にロー材層を備えずに且つ外周面全体にロー材層を備え、前記第１部材と前記第２部材とを接合するためのロー材が前記第１部材の外周面のロー材層と接触しないように、前記第１部材の内周面に前記第２部材を嵌め入れた状態で両部材をロー付け接合してあり、前記第１部材の端末が前記第２部材の外周面から離間し、先端末部に断面テーパ状に拡開した拡開部を設けたことを特徴とする。 The invention according to claim 1 is a heat exchange comprising an outer fin, a plurality of tubes alternately stacked with the outer fin, and a header tank in which an opening end portion of each tube is inserted to communicate with each tube. The header tank is composed of a box-shaped first member and a box-shaped second member having openings in the direction of combination with each other, and the second member inserts an end portion of the tube into the tube insertion port. The first member is provided with the tube insertion port, the first member is not provided with a brazing material layer over the entire inner peripheral surface and a brazing material layer is provided over the entire outer peripheral surface, and the first member and the Both members in a state in which the second member is fitted into the inner peripheral surface of the first member so that the brazing material for joining the second member does not contact the brazing material layer on the outer peripheral surface of the first member. Of the first member End is separated from the outer peripheral surface of the second member, characterized in that a flared portion which is flared tapered section above the terminal portion.

請求項２の発明は、請求項１の熱交換器であって、前記第１部材と前記第２部材とを接合するためのロー材が前記第２部材の外周面のロー材層であることを特徴とする。 According to another aspect of the invention, it a heat exchanger according to claim 1, brazing material for bonding the first member and the second member is a brazing material layer on the outer peripheral surface of said second member It is characterized by.

請求項３の発明は、アウターフィンと、前記アウターフィンと交互に積層された複数のチューブと、前記各チューブの開口端部が挿入されて各チューブと連通するヘッダタンクと、を備えた熱交換器において、前記ヘッダタンクは、互いに組合せる第１部材および第２部材からなるパイプと、このパイプの両端開口部を閉塞する閉塞部材と、を備え、前記第２部材が前記チューブの端部を挿入するチューブ挿入口を備えずに前記第１部材が前記チューブ挿入口を備え、前記第１部材は内周面全体にロー材層を備えずに且つ外周面全体にロー材層を備え、前記第１部材と前記第２部材とを接合するためのロー材および前記パイプと前記閉塞部材とを接合するためのロー材が前記第１部材の外周面のロー材層と接触しないように、前記第１部材の内周面に前記第２部材を嵌め入れ且つ前記第１部材と前記第２部材とからなる前記パイプの内周面に前記閉塞部材を嵌め入れた状態で、前記各部材をロー付け接合してあり、前記第１部材の端末が前記第２部材の外周面から離間し、先端末部に断面テーパ状に拡開した拡開部を設けたことを特徴とする。 The invention according to claim 3 is a heat exchange comprising an outer fin, a plurality of tubes alternately stacked with the outer fin, and a header tank in which an opening end portion of each tube is inserted to communicate with each tube. The header tank includes a pipe composed of a first member and a second member that are combined with each other, and a closing member that closes both ends of the pipe, and the second member serves as an end of the tube. The first member without the tube insertion port to be inserted has the tube insertion port, the first member has no brazing material layer over the entire inner peripheral surface and a brazing material layer over the entire outer peripheral surface, The brazing material for joining the first member and the second member and the brazing material for joining the pipe and the closing member do not come into contact with the brazing material layer on the outer peripheral surface of the first member. Of the first member The respective members are brazed and joined in a state in which the second member is fitted into the peripheral surface and the closing member is fitted into the inner peripheral surface of the pipe composed of the first member and the second member. The terminal of the first member is separated from the outer peripheral surface of the second member, and a widened portion that is widened in a tapered shape in cross section is provided at the tip end portion .

請求項４の発明は、請求項３の熱交換器であって、前記第１部材の内周面と前記第２部材とを接合するためのロー材が前記第２部材の外周面のロー材層であることを特徴とする。 Invention of Claim 4 is a heat exchanger of Claim 3 , Comprising: The brazing material for joining the inner peripheral surface of the said 1st member and the said 2nd member is a brazing material of the outer peripheral surface of the said 2nd member It is a layer.

請求項５の発明は、請求項３または請求項４の熱交換器であって、閉塞部材は、板状で且つ少なくとも一方の面にロー材層を備えることを特徴とする。 A fifth aspect of the present invention is the heat exchanger according to the third or fourth aspect , wherein the closing member is plate-shaped and includes a brazing material layer on at least one surface.

請求項６の発明は、請求項１〜５の何れか１項にの熱交換器であって、前記ヘッダタンク内には前記ヘッダタンクの内部空間をその長手方向に複数の部屋に分割する仕切部材が装着され、前記パイプと前記仕切部材とを接合するためのロー材が前記第１部材の外周面のロー材層と接触しないように、前記第１部材と前記第２部材とからなる前記パイプの内周面に前記仕切部材を嵌め入れた状態で、前記各部材をロー付け接合してあることを特徴とする。 Invention of Claim 6 is the heat exchanger in any one of Claims 1-5 , Comprising: The partition which divides | segments the internal space of the said header tank into several chambers in the longitudinal direction in the said header tank A member is mounted, and the brazing material for joining the pipe and the partition member does not come into contact with the brazing material layer on the outer peripheral surface of the first member, and includes the first member and the second member. Each member is brazed and joined in a state in which the partition member is fitted into the inner peripheral surface of the pipe.

請求項７の発明は、請求項６の熱交換器であって、前記仕切部材は、板状で少なくとも一方の面にロー材層を備えることを特徴とするものである。 The invention according to claim 7 is the heat exchanger according to claim 6 , wherein the partition member is plate-shaped and includes a brazing material layer on at least one surface.

請求項１の発明によれば、ロー材層を備えない第１部材の内周面によって、第１部材の内周面と第２部材とを接合するためのロー材は、チューブのロー材層と、分断されている。これにより、ロー付け時に、第１部材の内周面と第２部材とを接合するためのロー材が、チューブに流失していかない。なお、この請求項１では、第１部材と第２部材とを接合するためのロー材は、予め素材として第２部材に一体形成されたものでもよいし、またロー付け前に第１部材または第２部材に塗布したものでもよい。また、請求項１の発明では、ヘッダタンクが箱状の第１部材と箱状の第２部材とからなる構造である。なお、第２部材の第１部材との接合面は、第２部材の内周面であっても第２部材の外周面であっても第２部材の端面であってもよい。さらに、仮に第１部材を薄肉にしても、ロー付け時にロー材が溶けた際に、第１部材の端末部を通じて、第１部材の外周面のロー材層と第２部材の外周面のロー材層とがつながることを確実に防止できる。なお、第１部材が薄肉でない場合にも効果はある。 According to the invention of claim 1, the brazing material for joining the inner peripheral surface of the first member and the second member by the inner peripheral surface of the first member not provided with the brazing material layer is the brazing material layer of the tube. It is divided. Thereby, at the time of brazing, the brazing material for joining the inner peripheral surface of the first member and the second member does not flow away to the tube. In the first aspect, the brazing material for joining the first member and the second member may be formed integrally with the second member as a raw material in advance, or the first member or the brazing member before brazing What applied to the 2nd member may be used. In the invention of claim 1, the header tank has a box-shaped first member and a box-shaped second member. The joint surface of the second member with the first member may be the inner peripheral surface of the second member, the outer peripheral surface of the second member, or the end surface of the second member. Furthermore, even if the first member is thin, when the brazing material is melted during brazing, the brazing material layer on the outer circumferential surface of the first member and the brazing material on the outer circumferential surface of the second member are passed through the terminal portion of the first member. It is possible to reliably prevent connection with the material layer. It is also effective when the first member is not thin.

請求項２の発明によれば、請求項１の発明の効果に加え、第２部材のロー材層により第１部材と第２部材とが接合される。そのため、第１部材または第２部材に、第１部材と第２部材とを接合するためのロー材を塗布する必要がなく、製造工程が簡素化する。 According to the invention of claim 2 , in addition to the effect of the invention of claim 1 , the first member and the second member are joined by the brazing material layer of the second member. Therefore, it is not necessary to apply a brazing material for joining the first member and the second member to the first member or the second member, and the manufacturing process is simplified.

請求項３の発明は、ヘッダタンクが、互いに組合せる第１部材および第２部材からなるパイプと、このパイプの両端開口部を閉塞する閉塞部材と、からなる構造である。そのため、請求項３の発明によれば、請求項１の発明と同様に、第１部材と第２部材とを接合するためのロー材がチューブに流失していかない。また、請求項３の発明では、第１・第２部材と閉塞部材とを接合するためのロー材が、第１部材の外周面のロー材層と接触しないように、第１・第２部材からなるパイプの内周面に閉塞部材を嵌め入れてある。そのため、第１・第２部材と閉塞部材とを接合するためのロー材が、ロー材層を備えない第１部材の内周面によって、チューブのロー材層と分断される。結果、ロー付け時に第１・第２部材の内周面と閉塞部材とを接合するためのロー材が、第１部材の内周面を通じてはチューブに流失していかない。加えて、請求項１の発明と同様に、仮に第１部材を薄肉にしても、ロー付け時にロー材が溶けた際に、第１部材の端末部を通じて、第１部材の外周面のロー材層と第２部材の外周面のロー材層とがつながることを確実に防止できる。なお、第１部材が薄肉でない場合にも効果はある。 The invention of claim 3 is a structure in which the header tank is composed of a pipe composed of a first member and a second member that are combined with each other, and a closing member that closes both ends of the pipe. Therefore, according to the invention of claim 3, as in the invention of claim 1, the brazing material for joining the first member and the second member does not flow away into the tube. According to a third aspect of the present invention, the first and second members are arranged so that the brazing material for joining the first and second members and the closing member does not contact the brazing material layer on the outer peripheral surface of the first member. A closing member is fitted into the inner peripheral surface of the pipe. Therefore, the brazing material for joining the first and second members and the closing member is separated from the brazing material layer of the tube by the inner peripheral surface of the first member that does not include the brazing material layer. As a result, the brazing material for joining the inner peripheral surfaces of the first and second members and the closing member during brazing does not flow away to the tube through the inner peripheral surface of the first member. In addition, similarly to the first aspect of the invention, even if the first member is thin, when the brazing material melts during brazing, the brazing material on the outer peripheral surface of the first member passes through the terminal portion of the first member. It can be reliably prevented that the layer and the brazing material layer on the outer peripheral surface of the second member are connected. It is also effective when the first member is not thin.

以上のようにこの請求項３の発明によれば、ロー付け時において、第１部材と第２部材とを接合するためのロー材および第１・第２部材と閉塞部材とを接合するためのロー材が、チューブに流失しない。 As described above, according to the third aspect of the invention, at the time of brazing, the brazing material for joining the first member and the second member and the first and second members and the closing member are joined. Raw material does not flow into the tube.

なお、この請求項３では、第１部材と第２部材とを接合するためのロー材は、予め素材として第２部材に一体形成されたものでもよいし、またロー付け前に第１部材または第２部材に塗布したものでもよい。また、第１・第２部材と閉塞部材とを接合するためのロー材は、予め素材として閉塞部材に一体形成されたものでもよいし、またロー付け前に第１・第２部材または閉塞部材に塗布したものでもよい。 In the third aspect, a brazing material for joining a first member and a second member in advance may be one integrally formed as the second member material, also the first member or brazing before What applied to the 2nd member may be used. Further, the brazing material for joining the first and second members and the closing member may be previously formed integrally with the closing member as a raw material, or the first and second members or the closing member before brazing. What was apply | coated to may be sufficient.

請求項４の発明によれば、請求項３の発明の効果に加え、第２部材のロー材層で第１部材の内周面と第２部材とが接合される。そのため、第１部材または第２部材に、第１部材と第２部材とを接合するためのロー材を塗布する必要がなく、製造工程が簡素化する。 According to the invention of claim 4 , in addition to the effect of the invention of claim 3 , the inner peripheral surface of the first member and the second member are joined by the brazing material layer of the second member. Therefore, it is not necessary to apply a brazing material for joining the first member and the second member to the first member or the second member, and the manufacturing process is simplified.

請求項５の発明によれば、請求項３または請求項４の発明の効果に加え、閉塞部材のロー材層が、第１・第２部材と閉塞部材とを接合するためのロー材として作用する。そのため、ロー付け前に第１・第２部材または閉塞部材に、第１・第２部材と閉塞部材とを接合するためのロー材を塗布する必要がなく、製造工程が簡素化する。なお、閉塞部材のロー材層は少なくとも閉塞部材の表裏のいずれか一方にあればよい。 According to the invention of claim 5 , in addition to the effect of the invention of claim 3 or claim 4 , the brazing material layer of the closing member acts as a brazing material for joining the first and second members and the closing member. To do. Therefore, it is not necessary to apply a brazing material for joining the first and second members and the closing member to the first and second members or the closing member before brazing, and the manufacturing process is simplified. Note that the brazing material layer of the closing member may be at least one of the front and back surfaces of the closing member.

請求項６の発明によれば、請求項１〜５の何れか１項にの発明の効果に加え、パイプ内に仕切部材を接合するためのロー材が、第１部材の外周面のロー材層と接触しないため、パイプ内に仕切部材を接合するためのロー材が、チューブのロー材層と分断される。結果、ロー付け時に第１・第２部材の内周面と仕切部材とを接合するためのロー材が、第１部材の内周面および外周面を通じてはチューブに到達できない。以上のようにこの請求項６の発明によれば、仕切部材を設けた構造において、ロー付け時に第１・第２部材と仕切部材とを接合するためのロー材がチューブに流失しない。 According to the invention of claim 6 , in addition to the effect of the invention of any one of claims 1 to 5 , the brazing material for joining the partition member in the pipe is the brazing material on the outer peripheral surface of the first member. Since it does not contact the layer, the brazing material for joining the partition member in the pipe is separated from the brazing material layer of the tube. As a result, the brazing material for joining the inner peripheral surfaces of the first and second members and the partition member during brazing cannot reach the tube through the inner peripheral surface and the outer peripheral surface of the first member. As described above, according to the sixth aspect of the present invention, in the structure in which the partition member is provided, the brazing material for joining the first and second members and the partition member is not lost to the tube during brazing.

なお、この請求項６では、第１・第２部材と仕切部材とを接合するためのロー材は、予め素材として仕切部材に一体形成されたものでもよいし、またロー付け前に第１・第２部材または仕切部材に塗布したものでもよい。 In addition, in this claim 6 , the brazing material for joining the first and second members and the partitioning member may be previously formed integrally with the partitioning member as a material, or before the brazing, What applied to the 2nd member or the partition member may be used.

請求項７の発明によれば、請求項６の発明の効果に加え、閉塞部材のロー材層が第１・第２部材と閉塞部材とを接合するためのロー材層として作用する。そのため、ロー付け前に第１・第２部材または閉塞部材に、第１・第２部材と閉塞部材とを接合するためのロー材を塗布する必要がなく、製造工程が簡素化する。なお、閉塞部材のロー材層は少なくとも閉塞部材の表裏のいずれか一方にあればよい。 According to the invention of claim 7 , in addition to the effect of the invention of claim 6 , the brazing material layer of the closing member acts as a brazing material layer for joining the first and second members and the closing member. Therefore, it is not necessary to apply a brazing material for joining the first and second members and the closing member to the first and second members or the closing member before brazing, and the manufacturing process is simplified. Note that the brazing material layer of the closing member may be at least one of the front and back surfaces of the closing member.

以下、本発明の一実施形態及び参考例を図面に基づいて説明する。 Hereinafter, an embodiment and a reference example of the present invention will be described with reference to the drawings.

第１参考例：図１〜図６は第１実施形態の熱交換器を示す。なお、この実施形態の熱交換器は内部を流通する気相冷媒を冷却しながら凝縮するコンデンサとして利用される。 First Reference Example : FIGS. 1 to 6 show a heat exchanger according to a first embodiment. In addition, the heat exchanger of this embodiment is utilized as a condenser which condenses while cooling the gas-phase refrigerant | coolant which distribute | circulates an inside.

「熱交換器の全体構造」
図１に示すように、この第１実施形態の熱交換器１は、複数のアウターフィン３、３、・・・と、前記アウターフィン３、３、・・・と交互に積層された複数の扁平状のチューブ５、５、・・・と、これらアウターフィン３、３、・・・およびチューブ５、５、・・・の積層方向最外側に配置された補強用のサイドプレート１１、１１と、前記各チューブ５の両開口端部が挿入されて各チューブ５と連通する一対のヘッダタンク７、９と、を備えている。 "Overall structure of heat exchanger"
As shown in FIG. 1, the heat exchanger 1 of the first embodiment includes a plurality of outer fins 3, 3,... And a plurality of outer fins 3, 3,. The flat tubes 5, 5, and the outer fins 3, 3,... And the reinforcing side plates 11, 11 disposed on the outermost side in the stacking direction of the tubes 5, 5,. , And a pair of header tanks 7 and 9 that are communicated with the tubes 5 by inserting both open end portions of the tubes 5.

ヘッダタンク７（図１中左側）には、冷媒入口用コネクタ１５が取付られ、ヘッダタンク９（図１右側）には、冷媒出口用コネクタ１７が取付られている。また、両ヘッダタンク７、９内には、ヘッダタンク７、９内を複数の部屋に仕切る仕切部材２７がはめ込まれている。   A refrigerant inlet connector 15 is attached to the header tank 7 (left side in FIG. 1), and a refrigerant outlet connector 17 is attached to the header tank 9 (right side in FIG. 1). A partition member 27 that divides the header tanks 7 and 9 into a plurality of rooms is fitted in the header tanks 7 and 9.

冷媒入口用コネクタ１５を通じて図示せぬ冷媒入口側配管からヘッダタンク７に冷媒を導入すると、この冷媒は、両ヘッダタンク７、９間を蛇行するように、チューブ５、５、・・・内を流通した後、最終的にヘッダタンク９から冷媒出口用コネクタ１７を通じて図示せぬ冷媒出口側配管に導出される。このとき、チューブ５内部を流通する冷媒とチューブ５外部を流通する空気の間で熱交換が行われる。   When the refrigerant is introduced into the header tank 7 from a refrigerant inlet side pipe (not shown) through the refrigerant inlet connector 15, the refrigerant passes through the tubes 5, 5,... So as to meander between the header tanks 7, 9. After the circulation, the refrigerant is finally led from the header tank 9 to the refrigerant outlet side pipe (not shown) through the refrigerant outlet connector 17. At this time, heat exchange is performed between the refrigerant flowing inside the tube 5 and the air flowing outside the tube 5.

「ヘッダタンクの構造」
次に、図２〜図４を参照しつつ、主にヘッダタンク７、９を詳しく説明する。 "Header tank structure"
Next, the header tanks 7 and 9 will be mainly described in detail with reference to FIGS.

各ヘッダタンク７、９は、その長手方向に沿って分割された第１部材２１および第２部材２３を組み合わせてなる角筒状のパイプ１９と、このパイプ１９の両開口端部１９ａ、１９ａを閉塞する閉塞部材２５、２５と、からなっている。また、両ヘッダタンク７、９の内部には、内部空間を長手方向に複数の部屋に区画する仕切部材２７が配置されている。   Each of the header tanks 7 and 9 has a rectangular tube-shaped pipe 19 formed by combining the first member 21 and the second member 23 divided along the longitudinal direction, and both open end portions 19a and 19a of the pipe 19. The closing members 25 and 25 are closed. A partition member 27 that divides the internal space into a plurality of rooms in the longitudinal direction is disposed inside the header tanks 7 and 9.

第１部材２１と第２部材２３とはいずれも断面コ字状に形成されている。   The first member 21 and the second member 23 are both formed in a U-shaped cross section.

詳しくは、第１部材２１は、チューブ５の長手方向と直交する平板状の基部２９と、この基部の幅方向両端から略直交方向に突設された一対のストレート部３１、３１と、を備えて断面略コ字状となっている。この第１部材２１の基部２９は、各チューブ５の開口端部を挿入するチューブ挿入口３３、３３、・・・を備える。一方、第２部材２３も、第１部材２１と同様に、チューブ５の長手方向と直交する平板状の基部３５と、この基部３５の幅方向両端から略直交方向に突設された一対のストレート部３７、３７と、を備えて断面略コ字状となっている。この第２部材の基部３５は開口（図示せぬ）を備え、この開口に冷媒入口用コネクタ１５（または冷媒出口用コネクタ１７）の筒状部４１が挿入された状態で取付られる。   Specifically, the first member 21 includes a flat plate-like base portion 29 that is orthogonal to the longitudinal direction of the tube 5, and a pair of straight portions 31, 31 that are provided in a substantially orthogonal direction from both ends in the width direction of the base portion. The cross section is substantially U-shaped. The base 29 of the first member 21 includes tube insertion ports 33, 33,... For inserting the open end portions of the tubes 5. On the other hand, as with the first member 21, the second member 23 also has a flat plate-like base portion 35 that is orthogonal to the longitudinal direction of the tube 5, and a pair of straight members that protrude from both ends of the base portion 35 in the substantially orthogonal direction. The sections 37 and 37 are provided and have a substantially U-shaped cross section. The base 35 of the second member has an opening (not shown), and is attached in a state where the cylindrical portion 41 of the refrigerant inlet connector 15 (or the refrigerant outlet connector 17) is inserted into the opening.

この例では、第１部材２１の幅寸法（一対のストレート部３１、３１同士の間隔）が第２部材２３の幅寸法（一対のストレート部３７、３７同士の間隔）より幅広に形成されている。そして、第１部材２１のストレート部３１、３１の内周面に第２部材２３のストレート部３７、３７の外周面を嵌め入れた状態で、両部材２１、２３がロー付け接合されている。   In this example, the width dimension of the first member 21 (the interval between the pair of straight portions 31, 31) is formed wider than the width dimension of the second member 23 (the interval between the pair of straight portions 37, 37). . The two members 21 and 23 are brazed and joined together with the outer peripheral surfaces of the straight portions 37 and 37 of the second member 23 fitted into the inner peripheral surfaces of the straight portions 31 and 31 of the first member 21.

第２部材２３の基部３５には、閉塞部材２５の突起部２６ａを支持する支持孔４３が設けれている。また、第２部材２３の各ストレート部３７、３７には、閉塞部材２５のウイング部２６ｂ、２６ｂを支持する支持溝４５、４５が設けられている。これら、第２部材２３の支持孔４３および支持溝４５、４５により閉塞部材２５が所定位置に位置決めされている。なお、この例では、仕切部材２７も閉塞部材２５と同一形状であり、仕切部材２７も突起部２８ａおよびウイング部２８ｂを備えて、第２部材２３に形成された図示せぬ支持孔および図示せぬ支持溝により所定位置に位置決めされている。   The base 35 of the second member 23 is provided with a support hole 43 that supports the protrusion 26 a of the closing member 25. In addition, support grooves 45 and 45 that support the wing portions 26 b and 26 b of the closing member 25 are provided in the straight portions 37 and 37 of the second member 23. The closing member 25 is positioned at a predetermined position by the support hole 43 and the support grooves 45, 45 of the second member 23. In this example, the partition member 27 also has the same shape as the closing member 25, and the partition member 27 also includes a protrusion 28a and a wing portion 28b, and a support hole (not shown) formed in the second member 23. It is positioned at a predetermined position by the support groove.

次に、主にヘッダタンク７、９の素材を説明する。   Next, the material of the header tanks 7 and 9 will be mainly described.

第１部材２１の素材は、コア材２１ａの表裏の一方にロー材層が一体形成されたもので、所定形状（コ字状）に成形された第１部材２１は、コア材２１ａの外周面にロー材層２１ｃを備え内周面にロー材層を備えないものである。   The material of the first member 21 is one in which a brazing material layer is integrally formed on one of the front and back sides of the core material 21a, and the first member 21 formed into a predetermined shape (U shape) is an outer peripheral surface of the core material 21a. A brazing material layer 21c is provided and no brazing material layer is provided on the inner peripheral surface.

第２部材２３の素材は、コア材２３ａの表裏の一方の面２３ｃの全体にロー材層２３ｃが一体形成されたものであり、所定形状（コ字状）に成形された第２部材２３は、コア材２３ａの外周面にロー材層２３ｃを備える。   The material of the second member 23 is one in which the brazing material layer 23c is integrally formed on the entire one surface 23c of the front and back surfaces of the core material 23a, and the second member 23 formed into a predetermined shape (U-shape) The core material 23a includes a brazing material layer 23c on the outer peripheral surface.

閉塞部材２５の素材は、コア材２５ａの表裏両面の全体にロー材層２５ｂ、２５ｃが一体成形されたものである（図４）。   The material of the closing member 25 is obtained by integrally molding the brazing material layers 25b and 25c on the entire front and back surfaces of the core material 25a (FIG. 4).

仕切部材２７の素材は、コア材２７ａの表裏両面の全体にロー材層２７ｂ、２７ｃが一体成形されたものである（図４）。   The material of the partition member 27 is obtained by integrally molding the brazing material layers 27b and 27c on the entire front and back surfaces of the core material 27a (FIG. 4).

これにより、ヘッダタンク７、９の各部材（第１部材２１、第２部材２３、閉塞部材２５）を組み合わせると各部材の接合面間にロー材層が存在することになり、各部材を組み合わせて状態で所定温度でロー付けすることによりヘッダタンク７、９の各部材が一体的に固定される。   Thus, when the members of the header tanks 7 and 9 (the first member 21, the second member 23, and the closing member 25) are combined, a brazing material layer exists between the joining surfaces of the members, and the members are combined. In this state, the members of the header tanks 7 and 9 are integrally fixed by brazing at a predetermined temperature.

なお、閉塞部材２５および仕切部材２７は、その周面（パイプを構成する第１部材２１および第２部材２３の内周面と接触する面）にロー材層を備えていないが、ロー付け時には、閉塞部材２５の表裏面のロー材層２５ｂ、２５ｃおよび仕切部材２７の表裏両面のロー材層２７ｂ、２７ｃが溶けて、毛細管現象により周面に周り込む。これにより。閉塞部材２５および仕切部材２７は、第１部材２１および第２部材２３とロー付けされるようになっている。
「チューブの構造」
図５および図６はチューブを示すものである。このチューブ５は、筒状であり、その両端が前記ヘッダタンク７、９のチューブ挿入口３３に挿入された状態で、ヘッダタンク７、９にロー付けされている。チューブ５の内部には波状のインナーフィンを備えている。、
以下、図６を参照しつつチューブ５の製造工程を説明する。まず、チューブ５の素材５Ｍとして、コア材５ａの表裏いずれか面の全体にロー材層５ｃが一体成形された、一枚の長板状の金属薄板５Ｍを用意する。 Note that the closing member 25 and the partition member 27 do not have a brazing material layer on their peripheral surfaces (surfaces that contact the inner peripheral surfaces of the first member 21 and the second member 23 constituting the pipe). The brazing material layers 25b and 25c on the front and back surfaces of the closing member 25 and the brazing material layers 27b and 27c on both the front and back surfaces of the partition member 27 are melted and enter the peripheral surface by capillary action. By this. The closing member 25 and the partition member 27 are brazed with the first member 21 and the second member 23.
"Tube structure"
5 and 6 show a tube. The tube 5 has a cylindrical shape, and is brazed to the header tanks 7 and 9 with both ends inserted into the tube insertion ports 33 of the header tanks 7 and 9. Inside the tube 5, a wavy inner fin is provided. ,
Hereinafter, the manufacturing process of the tube 5 will be described with reference to FIG. First, as a raw material 5M of the tube 5, a single long plate-like metal thin plate 5M in which a brazing material layer 5c is integrally formed on the entire front or back surface of the core material 5a is prepared.

次に、図６ａに示すように、素材としての長板状の金属薄板５Ｍの幅方向両端部を内側に巻き返し形成して、接合部４７、４７を形成する。   Next, as shown in FIG. 6 a, both end portions in the width direction of the long sheet-like metal thin plate 5 </ b> M as a material are wound inward to form the joint portions 47 and 47.

次に、ロー材層５ｃがチューブ５の外周面側に位置するように、素材５Ｍを長手方向に沿う中心線に沿って２つ折りにし、折り返し端部としての接合部４７、４７同士を折り合わせてチューブ状とする。このとき、図５に示すようにインナーフィン４９をチューブ５内に挿入しておく。このインナーフィン４９の素材は、図５に示すようにコア材４９ａの表裏の両面にロー材層４９ｂ、４９ｃが一体に形成されたものである。なお、この発明では、チューブ５内周面にロー材層を設けて、表裏面にロー材層を備えないインナーフィン４９を利用してもよい。   Next, the material 5M is folded in two along the center line along the longitudinal direction so that the brazing material layer 5c is located on the outer peripheral surface side of the tube 5, and the joint portions 47 and 47 as the folded end portions are folded together. Use a tube. At this time, the inner fins 49 are inserted into the tube 5 as shown in FIG. As shown in FIG. 5, the material of the inner fin 49 is obtained by integrally forming raw material layers 49b and 49c on both the front and back surfaces of the core material 49a. In the present invention, a brazing material layer may be provided on the inner peripheral surface of the tube 5 and an inner fin 49 having no brazing material layer on the front and back surfaces may be used.

最終的に、熱交換器１全体をロー付けする際に、チューブ５の接合部４７、４７同士がロー付けされ、また、チューブ５内周面とインナーフィン４９とがロー付けされる。これによりチューブ５が完成する。このとき同時に、チューブ５の外周面とアウターフィン３とがロー付けされ、また、チューブ５の両端部の外周面とヘッダタンク７、９のチューブ挿入口３３内周縁とがロー付けされる。なお、この実施形態ではアウターフィン３の素材は、コア材の表裏の両面にロー材層が一体形成されたものである。   Finally, when brazing the entire heat exchanger 1, the joint portions 47, 47 of the tube 5 are brazed, and the inner peripheral surface of the tube 5 and the inner fin 49 are brazed. Thereby, the tube 5 is completed. At the same time, the outer peripheral surface of the tube 5 and the outer fin 3 are brazed, and the outer peripheral surface of both ends of the tube 5 and the inner peripheral edge of the tube insertion port 33 of the header tanks 7 and 9 are brazed. In this embodiment, the material of the outer fin 3 is one in which a brazing material layer is integrally formed on both the front and back surfaces of the core material.

「熱交換器の製造工程」
次に、この参考例の熱交換器１の製造工程を簡単に説明する。 "Manufacturing process of heat exchanger"
Next, the manufacturing process of the heat exchanger 1 of this reference example is demonstrated easily.

まず、所定の素材からなるアウターフィン３、チューブ５、インナーフィン４９、ヘッダタンク７の各部材（第１部材２１および第２部材２３および閉塞部材２５）、仕切部材２７、コネクタ１５および１７、サイドプレート１１および１１、を用意する。   First, the outer fin 3, tube 5, inner fin 49, header tank 7 members (first member 21, second member 23, and closing member 25), partition members 27, connectors 15 and 17, and side members made of a predetermined material. Plates 11 and 11 are prepared.

次に、各部材を所定形状に加工する。   Next, each member is processed into a predetermined shape.

次に、全ての部材を組み合わせて、所定の治具などで仮固定して仮組体とする。   Next, all the members are combined and temporarily fixed with a predetermined jig or the like to form a temporary assembly.

次に、この仮組体を炉内で所定温度で焼結し、各部材を一体的にロー付けする。つまり仮組体の各部材のロー材層を所定温度で溶かしたのち冷やすことで、各部材を一体的に固定する。   Next, the temporary assembly is sintered at a predetermined temperature in a furnace, and the members are integrally brazed. That is, each member is fixed integrally by melting the brazing material layer of each member of the temporary assembly at a predetermined temperature and then cooling.

「作用」
この第１参考例の熱交換器によれば、
（ｉ）ヘッダタンク７、９の第１部材２１の内周面に第２部材２３がはめ込まれた状態で第１部材２１と第２部材２３とがロー付け接合される構造であり、ロー材層を備えない第１部材２１の内周面によって、第１部材２１と第２部材２３とを接合するためのロー材２３ｃが、チューブ５のロー材層と分断される。これにより、ロー付け時に、第１部材２１と第２部材２３とを接合するためのロー材２３ｃが、第１部材２１の内周面側からチューブ５に流失していかない。 "Action"
According to the heat exchanger of the first reference example ,
(I) A structure in which the first member 21 and the second member 23 are joined by brazing in a state where the second member 23 is fitted on the inner peripheral surface of the first member 21 of the header tanks 7 and 9. The brazing material 23 c for joining the first member 21 and the second member 23 is separated from the brazing material layer of the tube 5 by the inner peripheral surface of the first member 21 that does not include a layer. Thereby, at the time of brazing, the brazing material 23c for joining the first member 21 and the second member 23 does not flow away from the inner peripheral surface side of the first member 21 to the tube 5.

（ｉｉ）また、ロー材層を備えない第１部材２１の端末（ロー材流動遮断部）によって、第１部材２１と第２部材２３とを接合するためのロー材２３ｃが、チューブ５のロー材層に連続する第１部材２１の外周面のロー材層２１ｃと分断されている。これにより、ロー付け時に、第１部材２１と第２部材２３とを接合するためのロー材２３ｃが、第１部材２１の外周面側からチューブ５に流失していかない。 (Ii) Also, the brazing material 23c for joining the first member 21 and the second member 23 to the end of the first member 21 not provided with the brazing material layer (the brazing material flow blocking portion) It is separated from the brazing material layer 21c on the outer peripheral surface of the first member 21 continuing to the material layer. Thereby, at the time of brazing, the brazing material 23c for joining the first member 21 and the second member 23 does not flow away from the outer peripheral surface side of the first member 21 to the tube 5.

（ｉｉｉ）さらに、閉塞部材２５のロー材層２５ｂ、２５ｃが、第１部材２１の外周面のロー材層２１ｃと接触しないように、第１部材２１・第２部材２３からなるパイプ１９の内周面に閉塞部材２５を嵌め入れてある。そのため、閉塞部材２５のロー材２５ｂ、２５ｃ（第１部材２１・第２部材２３と閉塞部材２５とを接合するためのロー材２５ｂ、２５ｃ）が、ロー材層を備えない第１部材２１の内周面および端末によってチューブ５のロー材層５ｃと分断されることで、ロー付け時にチューブ５に流失していくことがなくなる。（なお、ロー付け時には、第２部材２３の外周面のロー材２３ｃも、閉塞部材２５のロー材層２５ｂ、２５ｃ上を流動して第１部材２１・第２部材２３の内周面と閉塞部材２５とを接合するためのロー材として作用する。）これにより、ロー付け時に、第１部材２１・第２部材２３の内周面と閉塞部材２５とを接合するためのロー材２３ｃ、２５ｂ、２５ｃは、第１部材２１の内周面側および外周面側からチューブ５に流失していかない。 (Iii) Further, in the pipe 19 composed of the first member 21 and the second member 23, the brazing material layers 25 b and 25 c of the closing member 25 are not in contact with the brazing material layer 21 c on the outer peripheral surface of the first member 21. A closing member 25 is fitted on the peripheral surface. Therefore, the brazing members 25b and 25c of the closing member 25 (the brazing members 25b and 25c for joining the first member 21 and the second member 23 and the closing member 25) of the first member 21 that does not include the brazing material layer. By being separated from the brazing material layer 5c of the tube 5 by the inner peripheral surface and the terminal, the tube 5 will not be washed away during brazing. (At the time of brazing, the brazing material 23c on the outer peripheral surface of the second member 23 also flows on the brazing material layers 25b and 25c of the closing member 25 to close the inner peripheral surfaces of the first member 21 and the second member 23. This acts as a brazing material for joining the member 25.) Thereby, the brazing materials 23c and 25b for joining the inner peripheral surfaces of the first member 21 and the second member 23 and the closing member 25 at the time of brazing. 25c does not flow out to the tube 5 from the inner peripheral surface side and the outer peripheral surface side of the first member 21.

（ｉ）（ｉｉ）（ｉｉｉ）により、ロー付け時に、第１部材２１と第２部材２３とを接合するためのロー材２３ｃおよび第１部材２１・第２部材２３と閉塞部材２５とを接合するためのロー材２５ｂ、２５ｃ、２３ｃが、チューブ５に流失することがなくなる。   (I) By joining (ii) and (iii), the brazing material 23c for joining the first member 21 and the second member 23 and the first member 21 and the second member 23 and the closing member 25 are joined at the time of brazing. Therefore, the brazing materials 25b, 25c, and 23c are not lost to the tube 5.

「効果」
以下、この第１参考例の効果をまとめる。 "effect"
The effects of the first reference example will be summarized below.

第１に、この第１参考例によれば、上記の如く、ロー材層を備えない第１部材２１の内周面および端末により、チューブ５のロー材層５ｃとヘッダタンク７、９のロー材層（第２部材２３のロー材層２３ｃおよび閉塞部材２５のロー材層２５ｂ、２５ｃ）とが分断される。そのため、毛細管部分が極めて多い熱交換器コア部１Ａ側にヘッダタンク７のロー材が奪われて、ヘッダタンク７のロー材が足りなくなることがない。結果、ヘッダタンクに接合される部品（コネクタ１５、１７など）や、ヘッダタンク７、９を構成する部材（第１部材２１、第２部材２３、閉塞部材２５）同士の接続安定性が良好となる。また、熱交換器コア部１Ａにヘッダタンク７、９のロー材が流動しないので、熱交換器コア部１Ａのチューブ５およびアウターフィン３に余分なロー材が蓄積しない。結果、ロー材の蓄積によって、チューブ５、５間の通風面積が狭められるようなことがない。 First, according to the first reference example , as described above, the brazing material layer 5c of the tube 5 and the brazing of the header tanks 7 and 9 are formed by the inner peripheral surface and the end of the first member 21 that does not include the brazing material layer. The material layers (the brazing material layer 23c of the second member 23 and the brazing material layers 25b and 25c of the closing member 25) are divided. Therefore, the brazing material of the header tank 7 is not taken away on the heat exchanger core portion 1A side where the capillary portion is extremely large, and the brazing material of the header tank 7 is not insufficient. As a result, the connection stability between components (connectors 15, 17 and the like) joined to the header tank and members (first member 21, second member 23, closing member 25) constituting the header tanks 7, 9 is good. Become. Moreover, since the brazing material of the header tanks 7 and 9 does not flow into the heat exchanger core 1A, excess brazing material does not accumulate in the tubes 5 and the outer fins 3 of the heat exchanger core 1A. As a result, the ventilation area between the tubes 5 and 5 is not reduced by the accumulation of the brazing material.

また、閉塞部材２５と同様に、仕切部材２７もそのロー材層２７ｂ、２７ｃが第１部材２１の外周面に触れないように、第１部材・第２部材よりなるパイプ１９内に配置されているため、仕切部材２７のロー材層２７ｂ、２７ｃを通じてヘッダタンク７、９のロー材が熱交換器コア部１Ａ側に流失することがない。なお、仕切部材２７が無い構造も本発明の権利範囲に含まれるものとする。   Similarly to the closing member 25, the partition member 27 is also arranged in the pipe 19 made of the first member and the second member so that the brazing material layers 27b and 27c do not touch the outer peripheral surface of the first member 21. Therefore, the brazing material of the header tanks 7 and 9 does not flow out to the heat exchanger core portion 1A side through the brazing material layers 27b and 27c of the partition member 27. A structure without the partition member 27 is also included in the scope of the right of the present invention.

第２に、この第１参考例の熱交換器１によれば、チューブ５は、チューブ５の長手方向に沿って接合部４７、４７を備える構造であるため、第１部材２１によるロー材流動遮断作用がより効果的となる。これは、仮にこの実施形態のようにロー材流動遮断部がないと、ヘッダタンク７、９のロー材がさらにチューブ５の接合部４７、４７にも吸い取られてしまうことに起因する。 Secondly, according to the heat exchanger 1 of the first reference example , the tube 5 has a structure including the joint portions 47 and 47 along the longitudinal direction of the tube 5. The blocking action becomes more effective. This is because, if there is no brazing material flow blocking portion as in this embodiment, the brazing material in the header tanks 7 and 9 is further sucked by the joint portions 47 and 47 of the tube 5.

「チューブの変形例１」
なお、例えば図１４（ａ）（ｂ）（ｃ）のチューブの変形例のように、接合部の形状が異なってもチューブの長手方向に沿って接合部があれば、第１参考例のチューブと同様の効果が得られる。以下、各変形例の構造の説明を付け加える。 “Tube Modification 1”
Note that, for example, as in the modification of the tube of FIGS. 14A, 14B, and 14C, the tube of the first reference example is provided if there is a joint along the longitudinal direction of the tube even if the shape of the joint is different. The same effect can be obtained. Hereinafter, description of the structure of each modification is added.

図１４（ａ）（ｂ）（ｃ）はいずれも、図５のチューブと同様に、素材である一枚の金属薄板を折り返し形成するタイプである。   Each of FIGS. 14A, 14B, and 14C is a type in which a single metal thin plate that is a material is folded back as in the tube of FIG.

図１４（ａ）のチューブ５０は、コア材５０ａの外周面となる面の全体にロー材層５０ｃを備える長板状の素材を長手方向に沿って折り返して、幅方向両端部の接合部５１、５２同士をロー付け接合する点で第１参考例のチューブ５と同様であるが、素材の幅方向両端部の接合部５１、５２のうち一方（この例では上側）の接合部５１を他方（この例では下側）の接合部５２より長く構成して、一方の接合部５１を他方の接合部５２を巻き込むように折り返して略コ字状に形成した点で第１参考例のチューブ５と異なる。ロー付け時には、接合部５２の内面が接合部５１のロー材層を備える外面と接触し、これにより、接合部５１、５２同士がロー付け接合される。 In the tube 50 of FIG. 14A, a long plate-like material provided with a brazing material layer 50c on the entire outer peripheral surface of the core material 50a is folded back along the longitudinal direction, and the joint portions 51 at both ends in the width direction. , 52 is the same as the tube 5 of the first reference example in that the two are joined by brazing, but one of the joints 51 and 52 at the both ends in the width direction of the material (upper side in this example) is connected to the other. The tube 5 of the first reference example is configured to be longer than the joint portion 52 (lower side in this example), and one of the joint portions 51 is folded back so as to wind the other joint portion 52 and is formed in a substantially U shape. And different. At the time of brazing, the inner surface of the joint portion 52 comes into contact with the outer surface having the brazing material layer of the joint portion 51, whereby the joint portions 51 and 52 are brazed and joined.

図１４（ｂ）のチューブ６０は、コア材６０ａの外周面となる面の全体にロー材層６０ｃを備える長板状の素材を長手方向に沿って折り返して、幅方向両端部の接合部６１、６１同士をロー付け接合する点で図５のチューブ５と同様であるが、長板状の素材の幅方向両端部に予め内側に折り返し形成した接合部６１、６１同士の接触面積が図５のチューブ５と異なっている。   In the tube 60 of FIG. 14B, a long plate-like material provided with a brazing material layer 60 c on the entire outer peripheral surface of the core material 60 a is folded back along the longitudinal direction, and the joint portions 61 at both ends in the width direction. , 61 is the same as the tube 5 in FIG. 5 in that the two are joined together by brazing, but the contact area between the joints 61 and 61 formed in advance inwardly at both ends in the width direction of the long plate-like material is as shown in FIG. The tube 5 is different.

図１４（ｃ）のチューブ７０は、外周面となる面の全体にロー材層を備える長板状の素材を長手方向に沿って折り返して、幅方向両端部の接合部７１、７１同士をロー付け接合する点で図５のチューブ５と同様であるが、各接合部７１、７１はロー材層を備えない内面同士をロー付け接合した点で図５のチューブ５と異なっている。なお、図５のチューブ５および図１４（ａ）のチューブ５０および図１４（ｂ）のチューブ６０のように、ロー付け時に接合部同士の間に予めロー材層が存在する構造の方が接合安定性に優れると考えられるが、この図１４（ｃ）に示すような構造であっても、接合部７１、７１の外面のロー材層７０ｃ、７０ｃが端末を介して接合部７１、７１の内面に周り込むため、接合部７１、７１同士の接合が確保される。   In the tube 70 of FIG. 14C, a long plate-like material having a brazing material layer on the entire outer peripheral surface is folded back along the longitudinal direction, and the joints 71 and 71 at both ends in the width direction are joined together. Although it is the same as that of the tube 5 of FIG. 5 by the point which carries out brazing, each joining part 71 and 71 differs from the tube 5 of FIG. 5 by the point which brazed and joined the inner surfaces which do not have a brazing material layer. In addition, like the tube 5 in FIG. 5, the tube 50 in FIG. 14 (a), and the tube 60 in FIG. 14 (b), a structure in which a brazing material layer is present in advance between the joints at the time of brazing is joined. Although considered to be excellent in stability, the brazing material layers 70c and 70c on the outer surfaces of the joint portions 71 and 71 are connected to the joint portions 71 and 71 through the terminals even in the structure shown in FIG. Since it goes around the inner surface, the joining portions 71 and 71 are joined together.

「チューブの変形例２」
図１５は、チューブのその他の変形例である。この図１５のチューブ８０は、素材としての二枚の金属薄板８０Ａ、８０Ｂを用いてこの金属薄板８０Ａ、８０Ｂの幅方向両端の接合部８１、８２同士が接合された構造である点で、図５のチューブ５と異なるが、チューブ８０の長手方向に沿って接合部８１、８２がある点で図５のチューブと同様である。そのため図５のチューブ５と同様の効果が得られる。 “Tube Variation 2”
FIG. 15 shows another modification of the tube. The tube 80 in FIG. 15 has a structure in which two thin metal plates 80A and 80B as materials are joined to each other at the joint portions 81 and 82 at both ends in the width direction of the thin metal plates 80A and 80B. 5 is the same as the tube of FIG. 5 in that there are joint portions 81 and 82 along the longitudinal direction of the tube 80. Therefore, the same effect as the tube 5 of FIG. 5 is acquired.

「チューブの変形例３」
なお、本発明には、チューブがチューブ長手方向に接合部を備えない構造も含まれるものとする。この例としては、チューブ長手方向に向けて押出成形したチューブがある。 “Tube Modification 3”
In addition, the structure where a tube does not provide a junction part in a tube longitudinal direction is also included in this invention. As this example, there is a tube extruded toward the longitudinal direction of the tube.

以下、その他の実施形態及び参考例を説明する。なお、以下の説明で同一または類似の構成については同一の符号を付して、構成および作用効果の説明を省略する。 Hereinafter, other embodiments and reference examples will be described. In the following description, the same or similar components are denoted by the same reference numerals, and description of the configuration and the operational effects is omitted.

「第２参考例」
図７〜図９は第２参考例の熱交換器のヘッダタンク１４０である。この第２参考例のヘッダタンク１４０では、ヘッダタンク１４０のロー材層の接触構造が図８および図９に示すように第１参考例と同様であるが、ヘッダタンク１４０の第１部材１４１と第２部材１４２に閉塞部材が一体に形成されるた点で、第１参考例と異なる。言い換えると、第２参考例のヘッダタンク１４０は、組合方向に向けてそれぞれ開口を備える箱形の第１部材１４１および第２部材１４２からなるタイプである。 "Second Reference Example "
7-9 is the header tank 140 of the heat exchanger of a 2nd reference example . In the header tank 140 of the second reference example , the contact structure of the brazing material layer of the header tank 140 is the same as that of the first reference example as shown in FIGS. 8 and 9, but the first member 141 of the header tank 140 The second member 142 is different from the first reference example in that a closing member is integrally formed with the second member 142. In other words, the header tank 140 according to the second reference example is a type including a box-shaped first member 141 and a second member 142 each having an opening in the combination direction.

この第２参考例によれば、第１参考例と同様のロー材層の接触構造であるため、第１参考例と同様の作用効果を得ることができる。 According to the second reference example, since the contact structure of the first reference example and a similar brazing material layer, it is possible to obtain the same effects as the first embodiment.

「第３参考例」
図１０および図１１は第３参考例の熱交換器のヘッダタンク１６０を示す。この第３参考例のヘッダタンク１６０は、第２部材２３の内周面にロー材層２３ｂを備える以外は、第１参考例または第２参考例と同様に構造である。このように第２部材２３の内周面にロー材層２３ｂを備える構造であっても、第１参考例および第２参考例と同様の効果を得ることができる。 “Third Reference Example ”
10 and 11 show the header tank 160 of the heat exchanger of the third reference example . The header tank 160 of the third reference example has the same structure as that of the first reference example or the second reference example except that a brazing material layer 23b is provided on the inner peripheral surface of the second member 23. As described above, even in the structure including the brazing material layer 23b on the inner peripheral surface of the second member 23, the same effects as those of the first reference example and the second reference example can be obtained.

「本実施形態」
図１２は本実施形態の熱交換器のヘッダタンク１７０を示す。この本実施形態のヘッダタンク１７０は、第１部材２１（１４１）の一対のストレート部３１、３１の先端末部に断面テーパ状に拡開した拡開部１７１、１７１を設け、第１部材２１（１４１）の端末部を、第２部材の外周面のロー材層から離間させてある点で、第１参考例および第２参考例と異なっている。 "This implementation form"
Figure 12 shows the header tank 170 of heat exchanger of the present implementation mode. The header tank 170 of the present implementation embodiment this, the expanding portion 171, 171 which is expanded in a tapered cross section formed above the terminal portions of the pair of straight portions 31 and 31 of the first member 21 (141), first The terminal portion of the member 21 (141) is different from the first reference example and the second reference example in that it is separated from the brazing material layer on the outer peripheral surface of the second member.

この本実施形態によれば、第１参考例および第２参考例の効果に加え、仮に第１部材２１（１４１）を薄肉にしても、ロー付け時にロー材が溶けた際に、第１部材２１（１４１）の端末部を通じて、第１部材２１（１４１）の外周面のロー材層２１ｃと第２部材２３の外周面のロー材層２３ｃとがつながることを確実に防止できる。なお、第１部材２１（１４１）が薄肉でない場合にも効果はある。 According to this embodiment, in addition to the effects of the first reference example and the second reference example , even if the first member 21 (141) is made thin, the first member will be used when the brazing material melts during brazing. It is possible to reliably prevent the brazing material layer 21c on the outer circumferential surface of the first member 21 (141) and the brazing material layer 23c on the outer circumferential surface of the second member 23 from being connected through the terminal portion 21 (141). It is also effective when the first member 21 (141) is not thin.

「第４参考例」
図１３は第４参考例の熱交換器のヘッダタンク１８０を示す。この第４参考例のヘッダタンク１８０は、第２部材２３がロー材層を備えないコア材のみからなる点で、第１〜第３参考例と異なる。ロー付け前には、第１部材２１（１４１）および第２部材２３とを接合するためのロー材Ｘを、第１部材２１（１４１）もしくは第２部材２３に塗布している。 “ Fourth Reference Example ”
FIG. 13 shows the header tank 180 of the heat exchanger of the fourth reference example . The header tank 180 of the fourth reference example is different from the first to third reference examples in that the second member 23 is composed only of a core material that does not include a brazing material layer. Before brazing, the brazing material X for joining the first member 21 (141) and the second member 23 is applied to the first member 21 (141) or the second member 23.

この第４参考例によれば、第１〜第３参考例と同様の作用効果を得ることができる。なお、第１〜第３参考例では、第２部材２３のロー材層２３ｃで第１部材２１と第２部材２３とが接合されるため、第１部材２１と第２部材２３とを接合するためのロー材Ｘを別途塗布する必要がなく、第４参考例よりも熱交換器１の製造工程が簡素である。 According to the fourth reference example , the same operational effects as those of the first to third reference examples can be obtained. In the first to third reference examples , since the first member 21 and the second member 23 are joined by the brazing material layer 23c of the second member 23, the first member 21 and the second member 23 are joined. Therefore, the manufacturing process of the heat exchanger 1 is simpler than that of the fourth reference example .

以下、本発明の権利範囲をより明確化すべく、本発明の権利範囲外となる構造を比較例として説明する。なお、比較例１および比較例２は従来例ではない。   Hereinafter, in order to clarify the scope of the right of the present invention, structures outside the scope of the present invention will be described as comparative examples. Note that Comparative Example 1 and Comparative Example 2 are not conventional examples.

「比較例１」
図１６、図１７は本発明との比較例１である。この比較例１は本発明の権利範囲外である。比較例１の熱交換器のヘッダタンク２００は、第１部材２１の内周面にロー材層を備える点で、本発明（本実施形態）と異なっている。 "Comparative Example 1"
16 and 17 show a first comparative example with the present invention. This Comparative Example 1 is outside the scope of the present invention. The header tank 200 of the heat exchanger of Comparative Example 1 is different from the present invention ( this embodiment) in that a brazing material layer is provided on the inner peripheral surface of the first member 21.

この比較例１では、図１６および図１７のように、第１部材２１と第２部材２３と接合するための第２部材２３の外周面のロー材層２３ｃが、第１部材２１の内周面のロー材層２１ｂを介してチューブ５の外周面のロー材層５ｃと連続する。このため、第１部材２１と第２部材２３と接合するための第２部材２３の外周面のロー材層２３ｃが、第１部材２１の内周面のロー材層２１ｂ→チューブ５の外周面のロー材層５ｃ、の経路で、チューブ５内外に流失してしまう。   In the comparative example 1, as shown in FIGS. 16 and 17, the brazing material layer 23 c on the outer peripheral surface of the second member 23 for joining the first member 21 and the second member 23 is the inner periphery of the first member 21. It continues to the brazing material layer 5c on the outer peripheral surface of the tube 5 via the brazing material layer 21b on the surface. Therefore, the brazing material layer 23 c on the outer peripheral surface of the second member 23 for joining the first member 21 and the second member 23 is the brazing material layer 21 b on the inner peripheral surface of the first member 21 → the outer peripheral surface of the tube 5. In the path of the brazing material layer 5c, the material flows out into and out of the tube 5.

一方、本発明では、チューブ外周面のロー材層と接触する可能性のある第１部材の内周面にロー材層を備えてないため、ヘッダタンクのロー材がチューブに流出することが防止される。   On the other hand, in the present invention, since the brazing material layer is not provided on the inner circumferential surface of the first member that may come into contact with the brazing material layer on the outer circumferential surface of the tube, the brazing material of the header tank is prevented from flowing into the tube. Is done.

「比較例２」
図１８、図１９は本発明との比較例２である。この比較例２は本発明の権利範囲外である。比較例２の熱交換器のヘッダタンク３００は、閉塞部材２５および仕切部材２７の支持構造が本発明（本実施形態）と異なっている。具体的には比較例２では、本実施形態の構造に加えて、第１部材２１にも支持孔９１が形成されており、この支持孔９１に支持される突起部２６ｃ（２８ｃ）をさらに閉塞部材２５（仕切部材２７）に追加したものである。 “Comparative Example 2”
18 and 19 show a second comparative example with the present invention. This Comparative Example 2 is outside the scope of the present invention. The header tank 300 of the heat exchanger of Comparative Example 2 is different from the present invention ( this embodiment) in the support structure of the closing member 25 and the partition member 27. Specifically, in Comparative Example 2, in addition to the structure of the present embodiment, the first member 21 is also provided with a support hole 91, and the protrusion 26c (28c) supported by the support hole 91 is further blocked. This is added to the member 25 (partition member 27).

この比較例２では、閉塞部材２５および仕切部材２７の突起部２６ｃ、２８ｃを通じて、これら閉塞部材２５および仕切部材２７のロー材層２５ｂ、２５ｃ、２７ｂ、２７ｃが第１部材２１の外周面のロー材層２１ｃと接触する。そのため、図１８および図１９のように、第１部材２１と第２部材２３と接合するための第２部材２３の外周面のロー材層２３ｃが、閉塞部材２５および仕切部材２７のロー材層２５ｂ、２５ｃ、２７ｂ、２７ｃ→第１部材２１の外周面のロー材層２１ｃ→チューブ５の外周面のロー材層、の経路で、チューブ５に流失してしまう。また、このとき同時に閉塞部材２５および仕切部材２７のロー材層２５ｂ、２５ｃ、２７ｂ、２７ｃのロー材も同等の経路で、チューブに向けて流失してしまう。   In Comparative Example 2, the brazing member 25 and the brazing member layers 25b, 25c, 27b, and 27c of the partitioning member 27 pass through the protrusions 26c and 28c of the blocking member 25 and the partitioning member 27. It contacts the material layer 21c. Therefore, as shown in FIGS. 18 and 19, the brazing material layer 23 c on the outer peripheral surface of the second member 23 for joining the first member 21 and the second member 23 is the brazing material layer of the closing member 25 and the partition member 27. 25b, 25c, 27b, 27c → the brazing material layer 21c on the outer circumferential surface of the first member 21 → the brazing material layer on the outer circumferential surface of the tube 5 will be lost to the tube 5. At the same time, the brazing material layers 25b, 25c, 27b, and 27c of the closing member 25 and the partitioning member 27 are also washed away toward the tube through the same path.

一方、本発明では、閉塞部材およびまたは仕切部材が有る場合には、これら閉塞部材およびまたは仕切部材のロー材層が第１部材の外周面のロー材層と接触しないように、閉塞部材およびまたは仕切部材をヘッダタンク内にはめ込んでいるため、ヘッダタンクのロー材がチューブに流出することが防止される。また、本発明において、閉塞部材およびまたは仕切部材を第１部材に支持する場合は、支持部が第１部材の内周面から外周面に貫通する孔形状でなければよく、第１部材の内周面に形成された有底の穴や溝であればよい。   On the other hand, in the present invention, when there is a blocking member and / or a partition member, the blocking member and / or the brazing material layer of the blocking member and / or the partition member are not contacted with the brazing material layer on the outer peripheral surface of the first member. Since the partition member is fitted in the header tank, the raw material of the header tank is prevented from flowing out into the tube. Further, in the present invention, when the closing member and / or the partition member is supported by the first member, the support portion may not have a hole shape penetrating from the inner peripheral surface of the first member to the outer peripheral surface. It may be a bottomed hole or groove formed on the peripheral surface.

図１は本発明の第１参考例の熱交換器の全体構成を示す正面図。FIG. 1 is a front view showing an overall configuration of a heat exchanger according to a first reference example of the present invention. 図２は同熱交換器のヘッダタンク周辺の分解斜視図。FIG. 2 is an exploded perspective view around the header tank of the heat exchanger. 図３は同熱交換器ヘッダタンクの、チューブ挿入口が位置する部分における横断面図。FIG. 3 is a cross-sectional view of the heat exchanger header tank in a portion where the tube insertion port is located. 図４は同ヘッダタンクの、閉塞部材（または仕切部材）が位置する部分における横断面図。FIG. 4 is a cross-sectional view of a portion of the header tank where a blocking member (or partition member) is located. 図５は同ヘッダタンクのチューブの断面図。FIG. 5 is a sectional view of the tube of the header tank. 図６は同チューブの製造工程を一部を示す説明図。FIG. 6 is an explanatory view showing a part of the manufacturing process of the tube. 図７は本発明の第２参考例の熱交換器のヘッダタンクを示す要部斜視図であり、図７ａはヘッダタンクの組立前、図７ｂは組立後を示す。7A and 7B are perspective views showing a main part of a header tank of a heat exchanger according to a second reference example of the present invention. FIG. 7A shows a state before the header tank is assembled, and FIG. 7B shows a state after the assembly. 図８は同第２参考例の熱交換器のヘッダタンクの、チューブ挿入口が位置する部分における横断面図。FIG. 8 is a transverse cross-sectional view of a portion of the header tank of the heat exchanger of the second reference example where a tube insertion port is located. 図９は同第２参考例の熱交換器のヘッダタンクの、閉塞部材（または仕切部材）が位置する部分における横断面図FIG. 9 is a cross-sectional view of the header tank of the heat exchanger of the second reference example in a portion where the closing member (or partition member) is located. 図１０は本発明の第３参考例の熱交換器のヘッダタンクの、チューブ挿入口が位置する部分における横断面図。FIG. 10 is a cross-sectional view of the header tank of the heat exchanger of the third reference example of the present invention at the portion where the tube insertion port is located. 図１１は同第３参考例の熱交換器のヘッダタンクの、閉塞部材（または仕切部材）が位置する部分における横断面図。FIG. 11 is a cross-sectional view of a portion of the header tank of the heat exchanger of the third reference example where a blocking member (or partition member) is located. 図１２は本実施形態の熱交換器のヘッダタンクの、チューブ挿入口が位置する部分における横断面図。Figure 12 is a header tank of a heat exchanger of the present implementation embodiment, a cross-sectional view of a portion of the tube insertion port is located. 図１３は本発明の第４参考例の熱交換器のヘッダタンクの、チューブ挿入口が位置する部分における横断面図。FIG. 13 is a cross-sectional view of a portion of the header tank of the heat exchanger of the fourth reference example of the present invention where the tube insertion port is located. 図１４７はチューブの変形例を示す図。FIG. 147 is a diagram showing a modification of the tube. 図１５はチューブの変形例を示す図。FIG. 15 is a view showing a modification of the tube. 図１６は本発明に対する比較例１であって、ヘッダタンクのチューブ挿入口が位置する部分における横断面図FIG. 16 is Comparative Example 1 for the present invention, and is a cross-sectional view of a portion where the tube insertion port of the header tank is located. 図１７は本発明に対する比較例１であって、ヘッダタンクの閉塞部材（または仕切部材）が位置する部分における横断面図。FIG. 17 is a cross-sectional view of a portion where the closing member (or partition member) of the header tank is located in Comparative Example 1 for the present invention. 図１８は本発明に対する比較例１であって、ヘッダタンクのチューブ挿入口が位置する部分における横断面図FIG. 18 is Comparative Example 1 for the present invention, and is a cross-sectional view of a portion where the tube insertion port of the header tank is located. 図１９は本発明に対する比較例１であって、ヘッダタンクの閉塞部材（または仕切部材）が位置する部分における横断面図。FIG. 19 is a cross-sectional view of a portion where the closing member (or partition member) of the header tank is located in Comparative Example 1 for the present invention.

符号の説明Explanation of symbols

１…熱交換器
１Ａ…熱交換器コア部
３…アウターフィン
５…チューブ
５Ｍ…金属薄板（チューブの素材）
７、９…ヘッダタンク
１９…パイプ
１９ａ…両開口端部
２１…第１部材
２１ａ…コア材
２１ｂ…ロー材層
２１ｃ…ロー材層
２３…第２部材
２３ａ…コア材
２３ｂ…ロー材層
２３ｃ…ロー材層
２５…閉塞部材
２５ａ…コア材
２５ｂ、２５ｃ…ロー材層
２６ａ…突起部
２６ｂ、２６ｂ…ウイング部
２６ｃ…突起部
２７…仕切部材
２７ａ…コア材
２７ｂ、２７ｃ…ロー材層
２８ａ…突起部
２８ｂ、２８ｂ…ウイング部
３３…チューブ挿入口
４７、４７…接合部
４９…インナーフィン
４９ａ…コア材
４９ｂ、４９ｃ…ロー材層
５０…チューブ（変形例）
５０ａ…コア材
５０ｃ…ロー材層
５１…接合部
５２…接合部
６０…チューブ（変形例）
６０ａ…コア材
６０ｃ…ロー材層
６１…接合部
７０…チューブ（変形例）
７０ｃ…ロー材層
７１…接合部
８０…チューブ（変形例）
８０Ａ、８０Ｂ…金属薄板（チューブの素材）
８１、８１…接合部
９１…支持孔
１４０…ヘッダタンク（第２実施形態）
１４１…第１部材
１４２…第２部材
１６０…ヘッダタンク（第３実施形態）
１７０…ヘッダタンク（第４実施形態）
１７１…拡開部（第１部材の端末）
１８０…ヘッダタンク（第５実施形態）
Ｘ…ロー材
DESCRIPTION OF SYMBOLS 1 ... Heat exchanger 1A ... Heat exchanger core part 3 ... Outer fin 5 ... Tube 5M ... Metal thin plate (tube material)
7, 9 ... Header tank 19 ... Pipe 19a ... Both ends of opening 21 ... First member 21a ... Core material 21b ... Brazing material layer 21c ... Brazing material layer 23 ... Second member 23a ... Core material 23b ... Raw material layer 23c ... Brazing material layer 25 ... Closing member 25a ... Core material 25b, 25c ... Brazing material layer 26a ... Protruding portion 26b, 26b ... Wing portion 26c ... Protruding portion 27 ... Partition member 27a ... Core material 27b, 27c ... Brazing material layer 28a ... Protrusion Part 28b, 28b ... Wing part 33 ... Tube insertion port 47, 47 ... Joint part 49 ... Inner fin 49a ... Core material 49b, 49c ... Raw material layer 50 ... Tube (modification)
50a ... Core material 50c ... Raw material layer 51 ... Joining part 52 ... Joining part 60 ... Tube (Modification)
60a ... Core material 60c ... Raw material layer 61 ... Junction 70 ... Tube (modification)
70c ... Raw material layer 71 ... Junction 80 ... Tube (modified example)
80A, 80B ... Metal sheet (tube material)
81, 81 ... Joining part 91 ... Support hole 140 ... Header tank (2nd Embodiment)
141 ... 1st member 142 ... 2nd member 160 ... Header tank (3rd Embodiment)
170 ... Header tank (fourth embodiment)
171 ... Expanding part (terminal of the first member)
180 ... Header tank (fifth embodiment)
X ... Raw material

Claims (7)

アウターフィン（３）と、前記アウターフィン（３）と交互に積層された複数のチューブ（５）（５０）（６０）（７０）（８０）と、前記各チューブの開口端部が挿入されて各チューブ（５）（５０）（６０）（７０）（８０）と連通するヘッダタンク（７、９）（１４０）（１６０）（１７０）（１８０）と、を備えた熱交換器（１）において、
前記ヘッダタンク（１４０）（１６０）（１７０）（１８０）は、互いに組合せ方向に向けて開口を有する箱状の第１部材（１４１）と箱状の第２部材（１４２）とからなり、
前記第２部材（１４２）は前記チューブ（５または５０または６０または７０または８０）の端部を挿入するチューブ挿入口（３３）を備えずに、前記第１部材（１４１）は前記チューブ挿入口（３３）を備え、
前記第１部材（１４１）は内周面全体にロー材層を備えずに且つ外周面全体にロー材層（２１ｃ）を備え、
前記第１部材（１４１）と前記第２部材（１４２）とを接合するためのロー材（２３ｃ）が前記第１部材（１４１）の外周面のロー材層（２１ｃ）と接触しないように、前記第２部材（１４２）を前記第１部材（１４１）の内周面に嵌め入れた状態で両部材（１４１、１４２）をロー付け接合してあり、前記ヘッダタンク（１７０）の、前記第１部材（２１）（１４１）の端末（１７１）は、前記第２部材（２３）（１４２）の外周面から離間し、先端末部に断面テーパ状に拡開した拡開部を設けたことを特徴とする熱交換器（１）。 An outer fin (3), a plurality of tubes (5) (50) (60) (70) (80) stacked alternately with the outer fin (3), and the open ends of the tubes are inserted. Heat exchanger (1) comprising header tanks (7, 9) (140) (160) (170) (180) communicating with each tube (5) (50) (60) (70) (80) In
The header tanks (140), (160), (170), and (180) are composed of a box-shaped first member (141) and a box-shaped second member (142) having openings toward each other in the combination direction,
The second member (142) does not include a tube insertion opening (33) for inserting an end of the tube (5, 50, 60, 70, or 80), and the first member (141) is not provided with the tube insertion opening. (33)
The first member (141) does not include a brazing material layer over the entire inner peripheral surface and includes a brazing material layer (21c) over the entire outer peripheral surface,
The brazing material (23c) for joining the first member (141) and the second member (142) is not in contact with the brazing material layer (21c) on the outer peripheral surface of the first member (141). Both members (141, 142) are joined by brazing in a state where the second member (142) is fitted to the inner peripheral surface of the first member (141), and the header tank (170) is The terminal (171) of the one member (21) (141) is spaced apart from the outer peripheral surface of the second member (23) (142), and an expanded portion that is expanded in a tapered shape at the front end portion is provided. A heat exchanger (1) characterized by 請求項１記載の熱交換器（１）であって、
前記前記第１部材（１４１）と前記第２部材（１４２）とを接合するためのロー材（２３ｃ）が、前記第２部材（２３）のロー材層（２３ｃ）であることを特徴とする熱交換器（１）。 A heat exchanger (1) according to claim 1,
The brazing material (23c) for joining the first member (141) and the second member (142) is the brazing material layer (23c) of the second member (23). Heat exchanger (1). アウターフィン（３）と、前記アウターフィン（３）と交互に積層された複数のチューブ（５）（５０）（６０）（７０）（８０）と、前記各チューブの開口端部が挿入されて各チューブ（５）（５０）（６０）（７０）（８０）と連通するヘッダタンク（７、９）（１４０）（１６０）（１７０）（１８０）と、を備えた熱交換器（１）において、
前記ヘッダタンク（７、９）は、互いに組合せる第１部材（２１）および第２部材（２３）からなるパイプ（１９）と、このパイプ（１９）の両端開口部を閉塞する閉塞部材（２５、２５）と、を備え、
前記第２部材（２３）は前記チューブ（５）（５０）（６０）（７０）（８０）の端部を挿入するチューブ挿入口（３３）を備えずに前記第１部材（２１）が前記チューブ挿入口（３３）を備え、
前記第１部材（２１）は内周面全体にロー材層を備えずに且つ外周面全体にロー材層（２１ｃ）を備え、
前記第１部材（２１）と前記第２部材（２３）とを接合するためのロー材（２３ｃまたはＸ）および前記パイプ（１９）と前記閉塞部材（２５、２５）とを接合するためのロー材（２５ｂ、２５ｃ）が、前記第１部材（２１）の外周面のロー材層（２１ｃ）と接触しないように、前記第１部材（２１）の内周面に前記第２部材（２３）を嵌め入れ且つ前記第１部材（２１）と前記第２部材（２３）とからなる前記パイプ（１９）の内周面に前記閉塞部材（２５、２５）を嵌め入れた状態で、前記各部材をロー付け接合してあり、前記ヘッダタンク（１７０）の、前記第１部材（２１）（１４１）の端末（１７１）は、前記第２部材（２３）（１４２）の外周面から離間し、先端末部に断面テーパ状に拡開した拡開部を設けたことを特徴とする熱交換器（１）。 An outer fin (3), a plurality of tubes (5) (50) (60) (70) (80) stacked alternately with the outer fin (3), and the open ends of the tubes are inserted. Heat exchanger (1) comprising header tanks (7, 9) (140) (160) (170) (180) communicating with each tube (5) (50) (60) (70) (80) In
The header tank (7, 9) includes a pipe (19) composed of a first member (21) and a second member (23) to be combined with each other, and a closing member (25) that closes both ends of the pipe (19). 25), and
The second member (23) does not have a tube insertion port (33) for inserting the end of the tube (5) (50) (60) (70) (80), and the first member (21) A tube insertion opening (33);
The first member (21) does not include a brazing material layer over the entire inner peripheral surface and includes a brazing material layer (21c) over the entire outer peripheral surface.
A brazing material (23c or X) for joining the first member (21) and the second member (23) and a brazing material for joining the pipe (19) and the closing member (25, 25). The second member (23) is disposed on the inner peripheral surface of the first member (21) so that the material (25b, 25c) does not contact the brazing material layer (21c) on the outer peripheral surface of the first member (21). In the state where the closing member (25, 25) is fitted in the inner peripheral surface of the pipe (19) composed of the first member (21) and the second member (23). The terminal (171) of the first member (21) (141) of the header tank (170) is separated from the outer peripheral surface of the second member (23) (142) , characterized in that a flared portion which is flared tapered section above the terminal portion Exchanger (1). 請求項３記載の熱交換器（１）であって、
前記第１部材（２１）の内周面と前記第２部材（２３）とを接合するためのロー材（２３ｃ）（Ｘ）が、前記第２部材（２３）のロー材層（２３ｃ）であることを特徴とする熱交換器（１）。 A heat exchanger (1) according to claim 3,
The brazing material (23c) (X) for joining the inner peripheral surface of the first member (21) and the second member (23) is the brazing material layer (23c) of the second member (23). A heat exchanger (1) characterized by being. 請求項３または請求項４記載の熱交換器（１）であって、
前記閉塞部材（２５）は、板状で且つ少なくとも一方の面にロー材層（２５ｂ、２５ｃ）を備えることを特徴とする熱交換器（１）。 A heat exchanger (1) according to claim 3 or claim 4, wherein
The closing member (25) is plate-shaped and includes a brazing material layer (25b, 25c) on at least one surface thereof. 請求項１〜５の何れか１項に記載の熱交換器（１）であって、
前記ヘッダタンク（７、９）（１４０）（１６０）（１７０）（１８０）内には、前記ヘッダタンク（７、９）（１４０）（１６０）（１７０）（１８０）の内部空間をその長手方向に複数の部屋に分割する仕切部材（２７）が装着され、
前記パイプ（１９）の内周面と前記仕切部材（２７）とを接合するためのロー材が前記第１部材（２１）の外周面のロー材層（２１ｃ）と接触しないように、前記第１部材（２１）と前記第２部材（２３）とからなる前記パイプ（１９）の内周面に前記仕切部材（２７）を嵌め入れた状態で、前記各部材をロー付け接合してあることを特徴とする熱交換器（１）。 The heat exchanger (1) according to any one of claims 1 to 5,
In the header tanks (7, 9) (140) (160) (170) (180), the internal space of the header tanks (7, 9) (140) (160) (170) (180) is the longitudinal direction. A partition member (27) that is divided into a plurality of rooms in the direction is mounted,
The brazing material for joining the inner peripheral surface of the pipe (19) and the partition member (27) does not come into contact with the brazing material layer (21c) on the outer peripheral surface of the first member (21). Each member is brazed and joined in a state where the partition member (27) is fitted into the inner peripheral surface of the pipe (19) composed of one member (21) and the second member (23). A heat exchanger (1) characterized by 請求項６記載の熱交換器（１）であって、
前記仕切部材（２７）は、板状で且つ少なくとも一方の面にロー材層（２７ｂ、２７ｃ）を備えることを特徴とする熱交換器（１）。 A heat exchanger (1) according to claim 6,
The partition member (27) is plate-shaped and includes a brazing material layer (27b, 27c) on at least one surface thereof.

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