JP2017059733A - Liquid circulation device and manufacturing method for the same - Google Patents
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- 239000007788 liquid Substances 0.000 title claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000005219 brazing Methods 0.000 claims abstract description 82
- 239000000470 constituent Substances 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 43
- 230000002093 peripheral effect Effects 0.000 claims abstract description 37
- 230000013011 mating Effects 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 54
- 238000003825 pressing Methods 0.000 claims description 29
- 238000003780 insertion Methods 0.000 claims description 27
- 230000037431 insertion Effects 0.000 claims description 27
- 238000009826 distribution Methods 0.000 claims description 16
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 description 40
- 238000000034 method Methods 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
Description
この発明は、たとえば半導体素子などの発熱体を冷却する液冷式冷却装置として用いられる液流通装置およびその製造方法に関する。 The present invention relates to a liquid circulation device used as a liquid cooling type cooling device for cooling a heating element such as a semiconductor element, and a method for manufacturing the same.
この明細書および特許請求の範囲において、図２の上下を上下というものとする。 In this specification and claims, the top and bottom of FIG.
従来、液冷式冷却装置に用いられる液流通装置として、中空状のケーシング本体およびケーシング本体に通じる円筒状のパイプ接続部を有するケーシングと、ケーシングのパイプ接続部に接続された通液パイプとを備えており、ケーシングのケーシング本体が、液流通部および液流通部内にパイプ接続部を通じさせる連通部よりなり、ケーシングが、ケーシング本体の液流通部および連通部の上部を形成する第１部分、ならびにパイプ接続部の上半部を形成する第１半円筒部を有する上構成部材と、ケーシング本体の液流通部および連通部の下部を形成する第２部分、ならびにパイプ接続部の下半部を形成する第２半円筒部を有し、かつ上構成部材にろう付された下構成部材とよりなり、通液パイプが、ケーシングのパイプ接続部内に挿入されてろう付されているものが知られている（特許文献１参照）。 Conventionally, as a liquid circulation device used for a liquid cooling type cooling device, a casing having a hollow casing body and a cylindrical pipe connection portion communicating with the casing body, and a liquid flow pipe connected to the pipe connection portion of the casing A casing main body of the casing includes a liquid circulation part and a communication part that allows the pipe connection part to pass through the liquid circulation part, and the casing forms a liquid circulation part of the casing main body and a first part that forms an upper part of the communication part, and An upper structural member having a first semi-cylindrical part that forms the upper half of the pipe connection part, a second part that forms the lower part of the liquid circulation part and the communication part of the casing body, and a lower half part of the pipe connection part And a lower component member brazed to the upper component member, and the liquid passing pipe is inserted into the pipe connection portion of the casing. Those you attached terrorism is known (see Patent Document 1).
特許文献１記載の液流通装置は、上下両構成部材を、ブレージングシートにプレス加工を施すことによりつくるとともに、通液パイプをつくり、ついでケーシングの上下両構成部材を、第１部分と第２部分、および第１半円筒部と第２半円筒部を合致するように組み合わせた後に、通液パイプを上下両構成部材の組み合わせ体の両半円筒部間に挿入し、この状態で上下両構成部材どうしをろう付してケーシング本体およびパイプ接続部を有するケーシングをつくり、さらに通液パイプをケーシングのパイプ接続部の内周面にろう付することによって製造されている。
In the liquid distribution device described in
しかしながら、特許文献１記載の液流通装置によれば、パイプ接続部とパイプとのろう付に用いられるろう材が不足し、ろう付不良が発生して冷却がケーシングの外部に洩れるおそれがある。
However, according to the liquid circulation device described in
この発明の目的は、上記問題を解決し、ケーシングの上下両構成部材のパイプ接続部とパイプとの間にろう付不良が発生するのを防止しうる液流通装置およびその製造方法を提供することにある。 An object of the present invention is to provide a liquid distribution device that solves the above-described problems and prevents the occurrence of brazing defects between the pipe connecting portions of the upper and lower constituent members of the casing and the pipe, and a method for manufacturing the same. It is in.
本発明は、上記目的を達成するために以下の態様からなる。 In order to achieve the above object, the present invention comprises the following aspects.
1)中空状のケーシング本体およびケーシング本体に通じる円筒状のパイプ接続部を有するケーシングと、ケーシングのパイプ接続部に接続された通液パイプとを備えており、ケーシングのケーシング本体が、液流通部および液流通部内にパイプ接続部を通じさせる連通部よりなり、ケーシングが、ケーシング本体の液流通部および連通部の上部を形成する第１部分、ならびにパイプ接続部の上半部を形成する第１半円筒部を有する上構成部材と、ケーシング本体の液流通部および連通部の下部を形成する第２部分、ならびにパイプ接続部の下半部を形成する第２半円筒部を有し、かつ上構成部材にろう付された下構成部材とよりなり、通液パイプが、ケーシングのパイプ接続部内に挿入されてろう付されている液流通装置であって、
ケーシングの上構成部材が少なくとも下面がろう材で覆われたブレージングシートで形成されるとともに、同じく下構成部材が少なくとも上面がろう材で覆われたブレージングシートで形成され、ケーシングの上構成部材における第１半円筒部の両側縁部に、外側方に突出した上水平平板部が一体に設けられ、ケーシングの下構成部材における第２半円筒部の両側縁部に、外側方に突出し、かつ上構成部材の上水平平板部の幅よりも広幅であるとともに上構成部材の上水平平板部が重ね合わされた下水平平板部が一体に設けられており、上構成部材の第１半円筒部および下構成部材の第２半円筒部からなるパイプ接続部の内周面の先端に、外方に向かって拡径された円錐面が形成され、当該円錐面と通液パイプの外周面との間にパイプ接続部の先端側に向かって広がった環状空間が全周にわたって形成され、上下両水平平板部におけるパイプ接続部の開口端側の端面において、上下両水平平板部の合わせ目に、上下両水平平板部の重ね合わせ部の外側縁部と環状空間とを通じさせる連通溝が形成され、環状空間および連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されている液流通装置。
1) A casing having a hollow casing main body and a cylindrical pipe connecting portion communicating with the casing main body, and a liquid passing pipe connected to the pipe connecting portion of the casing, the casing main body of the casing being a liquid circulation portion And a communication part that allows the pipe connection part to pass through the liquid circulation part, and the casing forms a first part that forms the upper part of the liquid circulation part and the communication part of the casing body, and a first half that forms the upper half part of the pipe connection part. An upper component having a cylindrical part, a second part that forms the lower part of the liquid circulation part and the communication part of the casing body, and a second semi-cylindrical part that forms the lower half of the pipe connecting part, and an upper structure A liquid flow device comprising a lower component member brazed to a member, wherein the liquid passing pipe is inserted into the pipe connection portion of the casing and brazed,
The upper component of the casing is formed of a brazing sheet having at least a lower surface covered with a brazing material, and the lower component is also formed of a brazing sheet having at least an upper surface of which is covered with a brazing material. Upper horizontal flat plate portions projecting outward are integrally provided on both side edge portions of the first semi-cylindrical portion, projecting outwardly on both side edge portions of the second semi-cylindrical portion of the lower component member of the casing, and upper configuration A lower horizontal flat plate portion that is wider than the upper horizontal flat plate portion of the member and overlaid with the upper horizontal flat plate portion of the upper constituent member is integrally provided, and the first semi-cylindrical portion and the lower configuration of the upper constituent member are integrally provided. A conical surface whose diameter is increased outward is formed at the tip of the inner peripheral surface of the pipe connecting portion formed of the second semi-cylindrical portion of the member, and a pipe is formed between the conical surface and the outer peripheral surface of the liquid-flowing pipe. Connection An annular space extending toward the tip side is formed over the entire circumference, and the upper and lower horizontal flat plate portions are overlapped at the joint of the upper and lower horizontal flat plate portions at the end face on the opening end side of the pipe connecting portion in the upper and lower horizontal flat plate portions. A communication groove is formed through the outer edge of the mating portion and the annular space, and a fillet made of a brazing material covering the lower surface of the upper component member and the upper surface of the lower component member so as to straddle the inside of the annular space and the communication groove. The liquid distribution device that is formed.
2)ケーシングの上構成部材の上水平平板部の外側縁に斜め上方に突出した傾斜平板部が一体に設けられ、下構成部材の下水平板部の幅が、上構成部材の第１半円筒部の両側縁部から傾斜平板部の先端までの直線距離よりも広くなっており、傾斜平板部と下構成部材の下水平平板部との間に外側方に向かって広がった空間が形成され、当該空間と環状空間とが連通溝により通じさせられ、空間、連通溝および環状空間の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されている上記1)記載の液流通装置。 2) An inclined flat plate portion protruding obliquely upward is integrally provided on the outer edge of the upper horizontal flat plate portion of the upper component member of the casing, and the width of the lower horizontal plate portion of the lower component member is the first semi-cylindrical portion of the upper component member. Is wider than the linear distance from the side edges of the inclined flat plate portion to the tip of the inclined flat plate portion, and a space extending outward is formed between the inclined flat plate portion and the lower horizontal flat plate portion of the lower component member. A fillet made of a brazing material covering the lower surface of the upper component member and the upper surface of the lower component member is formed so that the space and the annular space are communicated by the communication groove and straddle the space, the communication groove, and the annular space. The liquid distribution device according to 1) above.
3)上記1)記載の液流通装置を製造する方法であって、
少なくとも片面がろう材で覆われているブレージングシートにプレス加工を施すことによって、ケーシング本体の液流通部および連通部の上部を形成する第１部分、パイプ接続部の上半部を形成する第１半円筒部、ならびに第１半円筒部の両側縁部に外側方に突出するように一体に設けられた上水平平板部を有する上構成部材と、ケーシング本体の液流通部および連通部の下部を形成する第２部分、パイプ接続部の下半部を形成する第２半円筒部、ならびに第２半円筒部の両側縁部に外側方に突出するように一体に設けられ、かつ上構成部材の上水平平板部よりも広幅であるとともに当該上水平平板部が重ね合わされる下水平平板部を有する下構成部材とを成形する第１工程と、
上下両構成部材を、上水平平板部と下水平平板部とが重なるように組み合わせた後、上下両押さえ型によって上下両構成部材の両半円筒部および両水平平板部を、両半円筒部および両水平平板部の端面が外部に露出した状態で上下から拘束する第２工程と、
円柱状本体部、本体部の一端に段部を介して一体に設けられ、かつ本体部よりも小径であるとともに上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入される円柱状挿入部、および本体部の一直径上において径方向外方に張り出すように一体に設けられ、かつ挿入部側端部が上下両水平平板部の外方に露出した端面における上下両水平平板部の合わせ目に当接する羽根部を有しており、本体部と挿入部との間の段部が、挿入部の挿入端側に向かって小径となった円錐面状となっている加工治具を使用し、
加工治具の挿入部を上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入するとともに、前記段部により両半円筒部の開口端面を押圧してパイプ接続用円筒部の内周面の先端に、外方に向かって拡径された円錐面を形成し、さらに羽根部の端部により上下両水平平板部の外方に露出した端面の合わせ目部分を押圧して一端がパイプ接続用円錐面に開口するとともに、他端が上下両水平平板部の重ね合わせ部の外側縁部に開口した連通溝を形成する第３工程と、
加工治具の挿入部を上下両構成部材の両半円筒部内から引き抜くとともに、上下両押さえ型による上下両構成部材の拘束を解除した後、通液パイプを上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入し、当該パイプ接続部用円筒部の内周面の先端の円錐面と通液パイプの外周面との間に、パイプ接続部用円筒部の先端側に向かって広がった環状空間を全周にわたって形成し、この状態で上下両構成部材および通液パイプを仮止めする第４工程と、
上下両構成部材どうしをろう付して、上構成部材の第１部分および下構成部材の第２部分によりケーシング本体の液流通部および連通部をつくるとともに、上下両構成部材の半円筒部により内周面の先端に円錐面が設けられているパイプ接続部をつくることによってケーシングを形成し、さらにパイプ接続部の内周面に通液パイプをろう付し、パイプ接続部の内周面の先端の円錐面と通液パイプの外周面との間に形成された環状空間、および上下両水平平板部の端面の合わせ目部分の連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットを形成する第５工程とを含む液流通装置の製造方法。
3) A method for producing the liquid distribution device according to 1) above,
A brazing sheet at least one surface of which is covered with a brazing material is pressed to form a first part that forms the upper part of the liquid circulation part and the communication part of the casing body, and a first part that forms the upper half of the pipe connection part. A semi-cylindrical portion, an upper constituent member having an upper horizontal flat plate portion integrally provided so as to protrude outward on both side edge portions of the first semi-cylindrical portion, and a lower portion of the liquid circulation portion and the communication portion of the casing body. A second portion to be formed, a second semi-cylindrical portion that forms the lower half of the pipe connecting portion, and an integrally provided projecting outwardly on both side edges of the second semi-cylindrical portion, and A first step of forming a lower component having a lower horizontal flat plate portion that is wider than the upper horizontal flat plate portion and on which the upper horizontal flat plate portion is superimposed;
After combining the upper and lower constituent members so that the upper horizontal flat plate portion and the lower horizontal flat plate portion overlap, both the semi-cylindrical portions and both horizontal flat plate portions of the upper and lower constituent members are combined by the upper and lower pressing molds. A second step of restraining from above and below with the end surfaces of both horizontal flat plate portions exposed to the outside;
A cylindrical main body part, which is integrally provided at one end of the main body part via a step part, and is inserted into a cylindrical part for a pipe connection part which is smaller in diameter than the main body part and is composed of both semi-cylindrical parts of upper and lower constituent members. The columnar insertion portion and the upper and lower horizontal surfaces on the end surface which are integrally provided so as to project radially outward on one diameter of the main body portion and whose insertion portion side end portions are exposed to the outer sides of the upper and lower horizontal flat plate portions Processing that has a blade part that contacts the joint of the flat plate part, and the step part between the main body part and the insertion part has a conical shape with a smaller diameter toward the insertion end side of the insertion part Using a jig,
The insertion part of the processing jig is inserted into the pipe connecting part cylindrical part composed of both the semi-cylindrical parts of the upper and lower constituent members, and the opening end surfaces of both the semi-cylindrical parts are pressed by the stepped part of the pipe connecting cylindrical part. At the tip of the inner peripheral surface, a conical surface that is expanded outward is formed, and the end of the blade is pressed by the end of the blade portion to the outside of the upper and lower horizontal flat plate portions. A third step of forming a communication groove having an opening in the conical surface for pipe connection and the other end opened in the outer edge of the overlapping portion of the upper and lower horizontal flat plate portions;
After pulling out the insertion part of the processing jig from both the semi-cylindrical parts of the upper and lower constituent members and releasing the restraint of the upper and lower constituent members by the upper and lower pressing molds, the liquid passing pipe is removed from both the semi-cylindrical parts of the upper and lower constituent members. Inserted into the cylindrical portion for the pipe connection portion, and between the conical surface at the distal end of the inner peripheral surface of the cylindrical portion for the pipe connection portion and the outer peripheral surface of the liquid passing pipe, toward the distal end side of the cylindrical portion for the pipe connection portion. A fourth step of forming a ring-shaped annular space over the entire circumference and temporarily fixing both the upper and lower constituent members and the liquid passing pipe in this state;
The upper and lower constituent members are brazed together, and the liquid flowing portion and the communicating portion of the casing body are formed by the first portion of the upper constituent member and the second portion of the lower constituent member. A casing is formed by creating a pipe connection part provided with a conical surface at the tip of the peripheral surface, and a liquid passing pipe is brazed to the inner peripheral surface of the pipe connection part, and the tip of the inner peripheral surface of the pipe connection part The lower surface and the lower structure of the upper component member so as to straddle the inside of the annular space formed between the conical surface of the liquid pipe and the outer peripheral surface of the liquid passing pipe and the joint portion of the end surface of the upper and lower horizontal flat plate portions And a fifth step of forming a fillet made of a brazing material covering the upper surface of the member.
4)第１工程においてブレージングシートにプレス加工を施して上構成部材を成形する際に、上水平平板部の外側縁に斜め上方に突出した傾斜平板部を一体に設けておき、第２工程において、上下両押さえ型によって上下両構成部材の両半円筒部および両水平平板部を上下から拘束する際に、傾斜平板部を上押さえ型の下面における上下両水平平板部を拘束する部分よりも外側に形成した逃がし空間内に入れるとともに、傾斜平板部と下構成部材の下水平平板部との間に外側方に向かって広がった空間を形成しておき、第３工程において形成した連通溝により、前記空間と第４工程において形成した環状空間とを通じさせ、第５工程における上下両構成部材のろう付時、およびパイプ接続部と通液パイプとのろう付時に、空間、連通溝および環状空間の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットを形成する上記3)記載の液流通装置の製造方法。 4) When the upper structural member is formed by pressing the brazing sheet in the first step, an inclined flat plate portion protruding obliquely upward is integrally provided on the outer edge of the upper horizontal flat plate portion. When restraining both the semi-cylindrical parts and both horizontal flat plate parts of the upper and lower constituent members from above and below by the upper and lower presser molds, the inclined flat plate part is outside the part that restrains the upper and lower horizontal flat plate parts on the lower surface of the upper presser mold. In the escape space formed in the above, a space extending outward is formed between the inclined flat plate portion and the lower horizontal flat plate portion of the lower component member, and by the communication groove formed in the third step, The space, the communication groove and the ring are passed through the space and the annular space formed in the fourth step, and when the upper and lower constituent members are brazed in the fifth step, and when the pipe connecting portion and the liquid pipe are brazed. Method of manufacturing so as to extend over the inside of the space, the three forming a fillet comprised of braze which covers the upper surface of the lower surface and the lower structure member of the upper component), wherein the liquid distribution device.
上記1)の液流通装置によれば、ケーシングの上構成部材が少なくとも下面がろう材で覆われたブレージングシートで形成されるとともに、同じく下構成部材が少なくとも上面がろう材で覆われたブレージングシートで形成され、ケーシングの上構成部材における第１半円筒部の両側縁部に、外側方に突出した上水平平板部が一体に設けられ、ケーシングの下構成部材における第２半円筒部の両側縁部に、外側方に突出し、かつ上構成部材の上水平平板部の幅よりも広幅であるとともに上構成部材の上水平平板部が重ね合わされた下水平平板部が一体に設けられており、上構成部材の第１半円筒部および下構成部材の第２半円筒部からなるパイプ接続部の内周面の先端に、外方に向かって拡径された円錐面が形成され、当該円錐面と通液パイプの外周面との間にパイプ接続部の先端側に向かって広がった環状空間が全周にわたって形成され、上下両水平平板部におけるパイプ接続部の開口端側の端面において、上下両水平平板部の合わせ目に、上下両水平平板部の重ね合わせ部の外側縁部と環状空間とを通じさせる連通溝が形成され、環状空間および連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されているので、次のような効果を奏する。すなわち、上記3)の方法により液流通装置を製造する際に、下構成部材の下水平平板部における上構成部材の上水平平板部よりも外側方に突出した部分の上面から溶け出したろう材が、前記連通溝を通って環状空間内に流入し、環状空間および連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されるので、パイプ接続部と通液パイプとのろう付に寄与するろう材量が、特許文献１記載の装置に比べて多くなる。したがって、パイプ接続部と通液パイプとのろう付部にろう付不良が発生することを防止することができる。
According to the liquid distribution device of 1) above, the upper constituent member of the casing is formed of a brazing sheet having at least a lower surface covered with a brazing material, and the lower constituent member is also at least an upper surface of the brazing sheet covered with a brazing material. The upper horizontal flat plate portion projecting outward is integrally provided on both side edges of the first semi-cylindrical portion of the upper constituent member of the casing, and both side edges of the second semi-cylindrical portion of the lower constituent member of the casing The lower horizontal flat plate portion that protrudes outward and is wider than the upper horizontal flat plate portion of the upper component member and the upper horizontal flat plate portion of the upper component member is superimposed is integrally provided on the upper portion. A conical surface having a diameter increased outward is formed at the distal end of the inner peripheral surface of the pipe connecting portion formed of the first semi-cylindrical portion of the constituent member and the second semi-cylindrical portion of the lower constituent member. Fluid passage pipe An annular space extending toward the tip side of the pipe connection part is formed over the entire circumference between the outer peripheral surface, and the upper and lower horizontal plate parts are aligned on the end face on the opening end side of the pipe connection part in the upper and lower horizontal plate parts. Eyes are formed with communication grooves that pass through the outer edges of the overlapping portions of the upper and lower horizontal flat plate portions and the annular space, and the lower surfaces of the upper component members and the lower component members are formed so as to straddle the annular spaces and the communication grooves. Since the fillet made of the brazing material covering the upper surface is formed, the following effects can be obtained. That is, when the liquid distribution device is manufactured by the method of 3) above, the brazing material that has melted from the upper surface of the portion that protrudes outward from the upper horizontal flat plate portion of the upper component member in the lower horizontal flat plate portion of the lower component member is Since the fillet made of the brazing material covering the lower surface of the upper component member and the upper surface of the lower component member is formed so as to flow into the annular space through the communication groove and straddle the inside of the annular space and the communication groove. The amount of brazing material that contributes to brazing between the pipe connecting portion and the liquid passing pipe is larger than that of the device described in
上記2)の液流通装置によれば、上記4)の方法により液流通装置を製造する際に、上構成部材の傾斜平板部の下面から溶け出したろう材、および下構成部材の下水平平板部の上面から溶け出したろう材が、空間内に入るとともに連通溝を通って環状空間に流入し、空間、連通溝および環状空間の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されるので、パイプ接続部とパイプとのろう付に寄与するろう材量が、特許文献１記載の装置に比べて多くなる。したがって、パイプ接続部とパイプとのろう付部にろう付不良が発生することを効果的に防止することができる。
According to the liquid flow device of 2), when producing the liquid flow device by the method of 4), the brazing material melted from the lower surface of the inclined flat plate portion of the upper component member, and the lower horizontal flat plate portion of the lower component member The brazing material melted from the upper surface of the upper surface of the upper component member and the lower component member so that the brazing material enters the space and flows into the annular space through the communication groove and straddles the space, the communication groove and the annular space. Since the fillet made of the brazing material covering the pipe is formed, the amount of brazing material contributing to the brazing of the pipe connecting portion and the pipe is larger than that of the apparatus described in
上記3)の製造方法によれば、下構成部材の下水平平板部における上構成部材の上水平平板部よりも外側方に突出した部分の上面から溶け出したろう材が、前記連通溝を通って環状空間内に流入し、環状空間および連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されるので、パイプ接続部と通液パイプとのろう付に寄与するろう材量が、特許文献１記載の装置に比べて多くなる。したがって、パイプ接続部と通液パイプとのろう付部にろう付不良が発生することを防止することができる。
According to the manufacturing method of 3) above, the brazing material that has melted from the upper surface of the portion that protrudes outward from the upper horizontal flat plate portion of the upper component member in the lower horizontal flat plate portion of the lower component member passes through the communication groove. A fillet made of a brazing material covering the lower surface of the upper component member and the upper surface of the lower component member is formed so as to flow into the annular space and straddle the annular space and the inside of the communication groove. The amount of brazing material contributing to brazing with the pipe is larger than that of the device described in
上記4)の製造方法によれば、上構成部材の傾斜平板部の下面から溶け出したろう材、および下構成部材の下水平平板部における上構成部材の上水平平板部よりも外側方に突出した部分の上面から溶け出したろう材が、空間内に入るとともに連通溝を通って環状空間に流入し、空間、連通溝および環状空間の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されるので、パイプ接続部とパイプとのろう付に寄与するろう材量が、特許文献１記載の装置に比べて多くなる。したがって、パイプ接続部とパイプとのろう付部にろう付不良が発生することを効果的に防止することができる。
According to the manufacturing method of the above 4), the brazing material that has melted from the lower surface of the inclined flat plate portion of the upper component member, and the upper component member in the lower horizontal flat plate portion of the lower component member protrudes outward from the upper horizontal flat plate portion. The brazing material that has melted from the upper surface of the portion enters the space and flows into the annular space through the communication groove and straddles the space, the communication groove, and the annular space. Since the fillet made of the brazing material covering the upper surface is formed, the amount of brazing material contributing to the brazing of the pipe connecting portion and the pipe is larger than that of the apparatus described in
以下、この発明の実施形態を、図面を参照して説明する。この実施形態は、この発明の液流通装置を、半導体素子などの発熱体を冷却する液冷式冷却装置に適用したものである。 Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the liquid circulation device of the present invention is applied to a liquid cooling type cooling device for cooling a heating element such as a semiconductor element.
以下の説明において、図２の左右を左右といい、図３の左側を前、これと反対側を後というものとする。 In the following description, the left and right in FIG. 2 are referred to as left and right, the left side in FIG. 3 is referred to as the front, and the opposite side is referred to as the rear.
また、以下の説明において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。 In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.
図１および図２この発明の液流通装置を適用した液冷式冷却装置を示し、図３はその要部の構成を示す。また、図４〜図１２は液冷式冷却装置の製造方法を示す。 1 and 2 show a liquid cooling type cooling apparatus to which the liquid circulation apparatus of the present invention is applied, and FIG. 3 shows the configuration of the main part thereof. 4 to 12 show a method for manufacturing the liquid cooling type cooling device.
図１〜図３において、液冷式冷却装置(1)は、アルミニウム製ケーシング(2)と、ケーシング(2)に接続された２つのアルミニウム製通液パイプ(3)とを備えており、一方の通液パイプ(3)がケーシング(2)内に冷却液を流入させるのに用いられ、他方の通液パイプ(3)がケーシング(2)内から冷却液を流出させるのに用いられるようになっている。 1 to 3, the liquid cooling type cooling device (1) includes an aluminum casing (2) and two aluminum flow pipes (3) connected to the casing (2). So that the liquid flow pipe (3) is used to flow the cooling liquid into the casing (2), and the other liquid flow pipe (3) is used to flow the cooling liquid from the casing (2). It has become.
ケーシング(2)は、中空状ケーシング本体(4)と、ケーシング本体(4)の左右両端部にそれぞれ一体に設けられ、かつケーシング本体(4)内に通じる円筒状のパイプ接続部(5)とを備えている。ケーシング本体(4)は、頂壁(6a)、周壁(6b)および底壁(6c)を有し、かつ内部を冷却液が流れるようになされた液流通部(6)と、液流通部(6)の左右両端部に設けられ、かつパイプ接続部(5)側に向かって狭くなっているとともにパイプ接続部(5)を液流通部(6)に通じさせる連通部(7)とよりなる。 The casing (2) includes a hollow casing main body (4) and a cylindrical pipe connecting portion (5) provided integrally with the left and right ends of the casing main body (4) and leading to the inside of the casing main body (4). It has. The casing body (4) has a top wall (6a), a peripheral wall (6b) and a bottom wall (6c), and a liquid circulation part (6) adapted to allow a cooling liquid to flow inside, and a liquid circulation part ( 6) provided at both left and right end portions, and narrowed toward the pipe connection portion (5) side, and a communication portion (7) for allowing the pipe connection portion (5) to communicate with the liquid circulation portion (6). .
ケーシング(2)は、ケーシング本体(4)の液流通部(6)および連通部(7)の上部を形成する第１部分(9)、ならびにパイプ接続部(5)の上半部を形成する第１半円筒部(11)を有する上構成部材(8)と、ケーシング本体(4)の液流通部(6)および連通部(7)の下部を形成する第２部分(13)、ならびにパイプ接続部(5)の下半部を形成する第２半円筒部(14)を有し、かつ上構成部材(8)にろう付された下構成部材(12)とよりなる。上構成部材(8)の第１部分(9)に、液流通部(6)の頂壁(6a)および周壁(6b)の全体と、連通部(7)の上半部とが設けられている。下構成部材(12)の第２部分(13)に、液流通部(6)の平坦な底壁(6c)の全体と、連通部(7)の下半部とが設けられている。上構成部材(8)は、少なくとも下面がろう材で覆われたアルミニウムブレージングシートで形成され、下構成部材(12)は、少なくとも上面がろう材で覆われたアルミニウムブレージングシートで形成されている。 The casing (2) forms a first part (9) that forms an upper part of the liquid circulation part (6) and the communication part (7) of the casing body (4), and an upper half part of the pipe connection part (5). An upper component member (8) having a first semi-cylindrical part (11), a second part (13) forming a lower part of the liquid circulation part (6) and the communication part (7) of the casing body (4), and a pipe The lower component member (12) has a second semi-cylindrical portion (14) that forms the lower half portion of the connection portion (5) and is brazed to the upper component member (8). The first portion (9) of the upper component member (8) is provided with the entire top wall (6a) and peripheral wall (6b) of the liquid circulation portion (6) and the upper half of the communication portion (7). Yes. An entire flat bottom wall (6c) of the liquid circulation part (6) and a lower half part of the communication part (7) are provided in the second part (13) of the lower component (12). The upper component (8) is formed of an aluminum brazing sheet having at least a lower surface covered with a brazing material, and the lower component (12) is formed of an aluminum brazing sheet having at least an upper surface covered with a brazing material.
ケーシング(2)の上構成部材(8)における第１部分(9)の前後両側縁部に、外側方に真っ直ぐに突出した第１上水平平板部(15)が一体に設けられている。また、上構成部材(8)における第１半円筒部(11)の前後両側縁部に、外側方に真っ直ぐに突出した第２上水平平板部(16)が一体に設けられ、第２上水平平板部(16)の外側縁に、斜め上方に突出した傾斜平板部(17)が一体に設けられている。上構成部材(8)の第２上水平平板部(16)は、第１上水平平板部(15)の左右両端部に面一となるように連なっている。 A first upper horizontal flat plate portion (15) projecting straight outward is integrally provided at both front and rear edges of the first portion (9) of the upper component (8) of the casing (2). Further, a second upper horizontal flat plate portion (16) projecting straight outward is integrally provided on both front and rear side edges of the first semi-cylindrical portion (11) in the upper component member (8), so that the second upper horizontal portion An inclined flat plate portion (17) protruding obliquely upward is integrally provided on the outer edge of the flat plate portion (16). The second upper horizontal flat plate portion (16) of the upper structural member (8) is continuous to the left and right end portions of the first upper horizontal flat plate portion (15).
ケーシング(2)の下構成部材(12)における第２部分(13)の前後両側縁部に、外側方に真っ直ぐに突出した第１下水平平板部(18)が一体に設けられている。また、下構成部材(12)における第２半円筒部(14)の前後両側縁部に、外側方に真っ直ぐに突出した第２下水平平板部(19)が一体に設けられている。下構成部材(12)の第２下水平平板部(19)は、第１下水平平板部(18)の左右両端部に面一となるように連なっている。下構成部材(12)の両下水平平板部(18)(19)の外形は、左右方向の長さが上構成部材(8)の左右方向の長さと等しくなっているとともに、前後方向の長さが上構成部材(8)の第１上水平平板部(15)の前後両側縁部間の直線距離よりも長くなっている左右方向に長い方形である。したがって、下構成部材(12)の両下水平平板部(18)(19)の前後方向の幅は、上構成部材(8)の両上水平平板部(15)(16)の幅よりも広く、かつ第１半円筒部(11)の前後両側縁部から前後両傾斜平板部(17)の先端までの直線距離よりも広くなっている。 A first lower horizontal flat plate portion (18) projecting straight outward is integrally provided at both front and rear side edges of the second portion (13) of the lower component (12) of the casing (2). Further, a second lower horizontal flat plate portion (19) projecting straight outward is integrally provided at both front and rear side edges of the second semi-cylindrical portion (14) in the lower component member (12). The second lower horizontal flat plate portion (19) of the lower component member (12) is continuous to the left and right end portions of the first lower horizontal flat plate portion (18). The external shape of the lower horizontal flat plate portions (18), (19) of the lower component member (12) is the same as the length of the upper component member (8) in the left-right direction and the length in the front-rear direction. Is a rectangular shape that is longer in the left-right direction than the linear distance between the front and rear side edges of the first upper horizontal flat plate portion (15) of the upper component member (8). Therefore, the width in the front-rear direction of the lower horizontal flat plate portions (18) and (19) of the lower component member (12) is wider than the width of the upper horizontal flat plate portions (15) and (16) of the upper component member (8). And, it is wider than the linear distance from the front and rear side edges of the first semi-cylindrical part (11) to the front ends of both front and rear inclined flat plate parts (17).
ケーシング(2)の上構成部材(8)の第１半円筒部(11)および下構成部材(12)の第２半円筒部(14)により形成されるパイプ接続部(5)の内周面の先端に、外方に向かって拡径された円錐面(21)が形成され、円錐面(21)とパイプ接続部(5)に挿入される通液パイプ(3)の外周面との間に、左右方向外側に向かって径方向に広がった環状空間(22)が全周にわたって形成されている。また、上構成部材(8)の傾斜平板部(17)と下構成部材(12)の第２下水平平板部(19)との間に前後方向外側に向かって上下方向に広がった空間(23)が形成されている。さらに、ケーシング(2)の上構成部材(8)の第２上水平平板部(16)および下構成部材(12)の第２下水平平板部(19)におけるパイプ接続部(5)の開口端側の端面において、両水平平板部(16)(19)の合わせ目に、左右方向にのびかつ環状空間(22)と空間(23)とを通じさせる連通溝(24)が形成されている。 Inner peripheral surface of the pipe connecting portion (5) formed by the first semi-cylindrical portion (11) of the upper component member (8) of the casing (2) and the second semi-cylindrical portion (14) of the lower component member (12). A conical surface (21) whose diameter is increased outward is formed at the tip of the pipe, and between the conical surface (21) and the outer peripheral surface of the liquid-passage pipe (3) inserted into the pipe connection portion (5). In addition, an annular space (22) that extends radially outwardly in the left-right direction is formed over the entire circumference. Further, a space (23) extending in the vertical direction toward the outside in the front-rear direction between the inclined flat plate portion (17) of the upper component member (8) and the second lower horizontal flat plate portion (19) of the lower component member (12). ) Is formed. Furthermore, the open end of the pipe connecting portion (5) in the second upper horizontal flat plate portion (16) of the upper component member (8) of the casing (2) and the second lower horizontal flat plate portion (19) of the lower component member (12). On the side end face, a communication groove (24) extending in the left-right direction and passing through the annular space (22) and the space (23) is formed at the joint of both horizontal flat plate portions (16) and (19).
ケーシング(2)の上下両構成部材(8)(12)は、片面にろう材層を有するアルミニウムブレージングシートにプレス加工を施すことによって、他方の構成部材(12)(8)側を向いた面にろう材層が来るように形成されたものである。すなわち、上構成部材(8)は、アルミニウムブレージングシートにプレス加工を施すことによって、両上水平平板部(15)(16)を除いた部分を膨出させるとともに、第２上水平平板部(16)の外側縁部に傾斜平板部(17)を設けることにより成形される。下構成部材(12)は、アルミニウムブレージングシートにプレス加工を施すことによって、両下水平平板部(18)(19)および液流通部(6)の底壁(6c)となる部分を除いた部分（連通部(7)の下半部となる部分）を膨出させることにより成形される。 The upper and lower constituent members (8), (12) of the casing (2) are surfaces facing the other constituent member (12) (8) side by pressing an aluminum brazing sheet having a brazing filler metal layer on one side. The brazing material layer is formed. That is, the upper component member (8) bulges the portion excluding the upper horizontal flat plate portions (15) and (16) by pressing the aluminum brazing sheet, and the second upper horizontal flat plate portion (16 ) Is provided by providing an inclined flat plate portion (17) at the outer edge portion. The lower component member (12) is a portion excluding the portion that becomes the bottom wall (6c) of both the lower horizontal flat plate portions (18) (19) and the liquid circulation portion (6) by pressing the aluminum brazing sheet. It is formed by bulging (the lower half part of the communication part (7)).
通液パイプ(3)のパイプ接続部(5)内に挿入された部分における円錐面(21)よりもケーシング本体(4)側に、環状ビード(3a)が全周にわたって形成されている。環状ビード(3a)の外径は、パイプ接続部(5)の内径と等しいか、または若干小さくなっている。 An annular bead (3a) is formed over the entire circumference on the casing body (4) side of the conical surface (21) in the portion inserted into the pipe connection portion (5) of the liquid flow pipe (3). The outer diameter of the annular bead (3a) is equal to or slightly smaller than the inner diameter of the pipe connecting portion (5).
そして、ケーシング(2)の上構成部材(8)の第１上水平平板部(15)と下構成部材(12)の第１下水平平板部(18)、および上構成部材(8)の第２上水平平板部(16)と下構成部材(12)の第２下水平平板部(19)とが、上構成部材(8)の下面のろう材および下構成部材(12)の上面のろう材によりろう付されることにより液流通部(6)および連通部(7)を有するケーシング本体(4)とパイプ接続部(5)とが形成され、さらにパイプ接続部(5)と通液パイプ(3)とが上構成部材(8)の下面のろう材および下構成部材(12)の上面のろう材によりろう付されており、環状空間(22)、空間(23)、連通溝(24)、および通液パイプ(3)の環状ビード(3a)よりも外側部分の外周面とパイプ接続部(5)の内周面との間の部分内に跨るように、上構成部材(8)の下面および下構成部材(12)の上面を覆っていたろう材からなるフィレット(25)が形成されている。 The first upper horizontal flat plate portion (15) of the upper structural member (8) of the casing (2), the first lower horizontal flat plate portion (18) of the lower structural member (12), and the first of the upper structural member (8). 2 The upper horizontal flat plate portion (16) and the second lower horizontal flat plate portion (19) of the lower component member (12) are brazed on the lower surface of the upper component member (8) and on the upper surface of the lower component member (12). The casing body (4) and the pipe connection part (5) having the liquid circulation part (6) and the communication part (7) are formed by brazing with the material, and further the pipe connection part (5) and the liquid passage pipe (3) is brazed with a brazing material on the lower surface of the upper component member (8) and a brazing material on the upper surface of the lower component member (12), and the annular space (22), the space (23), the communication groove (24 ), And the upper component member (8) so as to straddle the portion between the outer peripheral surface of the outer part of the annular bead (3a) of the liquid passing pipe (3) and the inner peripheral surface of the pipe connecting part (5). A brazing material covering the lower surface of the lower member and the upper surface of the lower component member (12). A fillet (25) is formed.
上記構成の液冷式冷却装置(1)において、たとえば半導体素子などからなる発熱体は、絶縁部材を介してケーシング本体(4)の液流通部(6)の頂壁(6a)外面に取り付けられる。そして、図示しない冷却液供給用配管から一方、たとえば右側の通液パイプ(3)内に送り込まれた冷却液は、ケーシング本体(4)の右側連通部(7)を通って液流通部(6)内に流入し、液流通部(6)内を左方に流れた後に左側連通部(7)を通って左側通液パイプ(3)内に流入し、図示しない冷却液排出用配管内に送り込まれる。発熱体から発せられる熱は、絶縁部材、およびケーシング本体(4)の液流通部(6)の頂壁(6a)を経てケーシング本体(4)の液流通部(6)内を流れる冷却液に伝わり、発熱体が冷却される。 In the liquid cooling type cooling device (1) configured as described above, a heating element made of, for example, a semiconductor element is attached to the outer surface of the top wall (6a) of the liquid circulation part (6) of the casing body (4) via an insulating member. . Then, the coolant sent from one of the coolant supply pipes (not shown), for example, into the right-hand fluid pipe (3) passes through the right communication portion (7) of the casing body (4) to the fluid circulation portion (6 ), Flows leftward in the liquid circulation part (6), then flows into the left liquid pipe (3) through the left communication part (7), and enters a cooling liquid discharge pipe (not shown). It is sent. The heat generated from the heating element is transferred to the coolant flowing in the liquid circulation part (6) of the casing body (4) through the insulating member and the top wall (6a) of the liquid circulation part (6) of the casing body (4). It is transmitted and the heating element is cooled.
以下、液冷式冷却装置(1)の製造方法を、図４〜図１２を参照して説明する。 Hereinafter, the manufacturing method of the liquid cooling type cooling device (1) will be described with reference to FIGS.
まず、片面にろう材層を有するアルミニウムブレージングシートにプレス加工を施すことによって、第１部分(9)、第１半円筒部(11)、両上水平平板部(15)(16)および傾斜平板部(17)を有する上構成部材(8)と、第２部分(13)、第２半円筒部(14)および両下水平平板部(18)(19)を有する下構成部材(12)とを、それぞれ他方の構成部材(12)(8)側を向いた面にろう材が来るように成形する(図４参照)(第１工程)。 First, by pressing an aluminum brazing sheet having a brazing filler metal layer on one side, the first portion (9), the first semi-cylindrical portion (11), the upper horizontal flat plate portions (15) and (16), and the inclined flat plate An upper component member (8) having a portion (17), a lower component member (12) having a second portion (13), a second semi-cylindrical portion (14), and both lower horizontal flat plate portions (18) and (19); Are molded such that the brazing material comes to the surface facing the other component member (12) (8) side (see FIG. 4) (first step).
ついで、上下両構成部材(8)(12)を、第１および第２上水平平板部(15)(16)と第１および第２下水平平板部(18)(19)とが重なるように組み合わせた後、左右方向の幅がパイプ接続部(5)の左右方向の長さよりも若干長い上下両押さえ型(30)(31)によって、上下両構成部材(8)(12)の両半円筒部(11)(14)と、第２上水平平板部(16)および第２下水平平板部(19)を、両半円筒部(11)(14)および両水平平板部(16)(19)の端面が左右方向外方に露出した状態で上下から拘束する(図４および図５参照)(第２工程)。 Next, the upper and lower constituent members (8) and (12) are arranged so that the first and second upper horizontal flat plate portions (15) and (16) overlap with the first and second lower horizontal flat plate portions (18) and (19). After the combination, the upper and lower pressing members (30) (31) are slightly longer in the left-right width than the left-right length of the pipe connection part (5). Part (11) (14), the second upper horizontal flat plate part (16), and the second lower horizontal flat plate part (19), both semi-cylindrical parts (11) (14) and both horizontal flat plate parts (16) (19 ) Is constrained from above and below with the end face exposed outward in the left-right direction (see FIGS. 4 and 5) (second step).
上押さえ型(30)の下面には、上押さえ型(30)の左右方向の全幅にわたり、かつ上構成部材(8)の第１半円筒部(11)を嵌め入れる下方に開口した半円筒状の凹溝(32)と、凹溝(32)の前後両側に形成されかつ上構成部材(8)の第２上水平平板部(16)を下方に向かって押さえる第１押さえ部(33)と、両第１押さえ部(33)の前後方向外側に下方に開口するように形成され、かつ上押さえ型(30)の左右方向の全幅にわたるとともに上構成部材(8)の傾斜平板部(17)を収容する逃がし空間(34)と、両逃がし空間(34)の前後方向外側に形成され、かつ下構成部材(12)の第２下水平平板部(19)を下方に向かって押さえる第２押さえ部(35)とが設けられている。下押さえ型(31)の上面には、下押さえ型(31)の左右方向の全幅にわたり、かつ下構成部材(12)の第２半円筒部(14)を嵌め入れる上方に開口した半円筒状の凹溝(36)と、凹溝(36)の前後両側に形成されかつ下構成部材(8)の第２下水平平板部(19)を上方に向かって押さえる第１押さえ部(37)とが設けられている（図６および図７参照）。 The lower surface of the upper presser mold (30) has a semi-cylindrical shape that extends in the horizontal direction of the upper presser mold (30) and opens downward to fit the first semicylindrical part (11) of the upper component member (8). And a first pressing portion (33) formed on both front and rear sides of the concave groove (32) and pressing the second upper horizontal flat plate portion (16) of the upper component member (8) downward. The inclined plate portion (17) of the upper component member (8) is formed so as to open downwardly in the front-rear direction outside of the first pressing portions (33) and extends over the entire width of the upper pressing die (30) in the left-right direction. And a second presser that is formed outside the two escape spaces (34) in the front-rear direction and presses the second lower horizontal flat plate portion (19) of the lower component (12) downward. Part (35). The upper surface of the lower presser mold (31) is a semi-cylindrical shape that extends across the entire width of the lower presser mold (31) and opens upward to fit the second semicylindrical part (14) of the lower component (12). And a first pressing portion (37) formed on both front and rear sides of the concave groove (36) and pressing the second lower horizontal flat plate portion (19) of the lower component member (8) upward. (See FIGS. 6 and 7).
そして、上下両構成部材(8)(12)の両半円筒部(11)(14)を上下両押さえ型(30)(31)の凹溝(32)(36)からなる貫通穴内に嵌め入れるとともに、上構成部材(8)の傾斜平板部(17)を逃がし空間(34)内に入れ、さらに上下両押さえ型(30)(31)の押さえ部(33)(37)により第２上水平平板部(16)および第２下水平平板部(19)を上下から押圧するとともに、上下両押さえ型(30)(31)の押さえ部(35)(37)により第２下水平平板部(19)を上下から押圧する。 Then, both the semi-cylindrical portions (11), (14) of the upper and lower constituent members (8), (12) are fitted into the through holes formed by the concave grooves (32), (36) of the upper and lower pressing molds (30), (31). At the same time, the inclined flat plate portion (17) of the upper component member (8) is put into the escape space (34), and further, the second upper horizontal by the pressing portions (33) and (37) of the upper and lower pressing dies (30) and (31). The flat plate portion (16) and the second lower horizontal flat plate portion (19) are pressed from above and below, and the second lower horizontal flat plate portion (19) is pressed by the holding portions (35) and (37) of the upper and lower pressing dies (30) and (31). ) From above and below.
ついで、外径が上下両押さえ型(30)(31)の凹溝(32)(36)からなる貫通穴の内径に等しい円柱状本体部(41)、本体部(41)の一端に段部(42)を介して一体に設けられ、かつ本体部(41)よりも小径であるとともに上下両構成部材(8)(12)の両半円筒部(11)(14)からなる円筒部内に挿入される円柱状挿入部(43)、および本体部(41)の一直径上において径方向外方に張り出すように一体に設けられ、かつ挿入部(43)側端部が上下両第２水平平板部(16)(19)の左右方向外方に露出した端面における上下両第２水平平板部(16)(19)の合わせ目に当接する羽根部(44)を有する加工治具(40)を用意する。加工治具(40)の本体部(41)と挿入部(43)との間の段部(42)における上下両構成部材(8)(12)側を向いた面は、挿入部(43)の挿入端側に向かって小径となった円錐面状となっている。また、羽根部(44)の挿入部(43)側端部は、挿入部(43)の本体部(41)側端部と同一位置にある。さらに、羽根部(44)の挿入部(43)側端部は先端が尖っている。 Next, a cylindrical main body (41) whose outer diameter is equal to the inner diameter of the through hole formed by the concave and convex grooves (32) (36) of the upper and lower pressing molds (30) (31), a stepped portion at one end of the main body (41) (42) is integrated into the cylindrical part formed of both semi-cylindrical parts (11) and (14) of the upper and lower constituent members (8) and (12), which are integrally provided with a smaller diameter than the main body part (41). The columnar insertion portion (43) and the main body portion (41) are integrally provided so as to project radially outward on one diameter, and the insertion portion (43) side end portions are both upper and lower second horizontal. A processing jig (40) having blade portions (44) that contact the joints of the upper and lower second horizontal flat plate portions (16) and (19) at the end faces exposed outward in the left-right direction of the flat plate portions (16) and (19). Prepare. The surface of the step portion (42) between the main body portion (41) and the insertion portion (43) of the processing jig (40) facing the upper and lower constituent members (8) (12) side is the insertion portion (43). The conical surface has a smaller diameter toward the insertion end side. Further, the end portion on the insertion portion (43) side of the blade portion (44) is located at the same position as the end portion on the main body portion (41) side of the insertion portion (43). Further, the end of the blade portion (44) on the side of the insertion portion (43) is pointed.
そして、加工治具(40)の挿入部(43)を、上下両構成部材(8)(12)の両半円筒部(11)(14)からなるパイプ接続部用円筒部内に挿入するとともに段部(42)により両半円筒部(11)(14)の開口端面を押圧して両半円筒部(11)(14)の内周面に、パイプ接続部(5)の円錐面(21)となる部分円錐面(11a)(14a)を形成する。これと同時に、羽根部(44)の端部により上下両第２水平平板部(16)(19)の左右方向外方に露出した端面の合わせ目部分を押圧して連通溝(24)を形成する(図８〜図１０参照)(第３工程)。 Then, the insertion portion (43) of the processing jig (40) is inserted into the pipe connecting portion cylindrical portion composed of the semi-cylindrical portions (11) and (14) of the upper and lower constituent members (8) and (12). By pressing the open end faces of both semi-cylindrical parts (11) and (14) by the part (42), the conical surface (21) of the pipe connecting part (5) is formed on the inner peripheral surface of both semi-cylindrical parts (11) and (14). The partial conical surfaces (11a) and (14a) are formed. At the same time, the communication groove (24) is formed by pressing the joint portion of the end surface exposed to the left and right outwards of the upper and lower second horizontal flat plate portions (16) and (19) by the end portion of the blade portion (44). (See FIGS. 8 to 10) (third step).
ついで、加工治具(40)の挿入部(43)を上下両構成部材(8)(12)の両半円筒部内から引き抜くとともに、上下両押さえ型(30)(31)による上下両構成部材(8)(12)の拘束を解除した後、通液パイプ(3)を上下両構成部材(8)(12)の両半円筒部(11)(14)からなるパイプ接続部用円筒部内に挿入し（図１１および図１２参照）、当該パイプ接続部用円筒部の内周面の先端の両部分円錐面(11a)(14a)からなる円錐面(21)と通液パイプ(3)の外周面との間に、パイプ接続部用円筒部の先端側に向かって広がった環状空間(22)を全周にわたって形成し、この状態で上下両構成部材(8)(12)および通液パイプ(3)を仮止めする(第４工程)。 Next, the insertion part (43) of the processing jig (40) is pulled out from both the semi-cylindrical parts of the upper and lower constituent members (8) and (12), and the upper and lower constituent members by the upper and lower pressing molds (30) and (31) ( 8) After releasing the restraint of (12), the liquid passing pipe (3) is inserted into the cylindrical part for the pipe connecting part composed of the semi-cylindrical parts (11) and (14) of the upper and lower components (8) and (12). (Refer to FIG. 11 and FIG. 12), the conical surface (21) composed of the conical surfaces (11a) and (14a) at the front end of the inner peripheral surface of the pipe connecting portion and the outer periphery of the liquid passing pipe (3) An annular space (22) extending toward the tip end side of the cylindrical portion for the pipe connecting portion is formed over the entire circumference, and in this state, the upper and lower constituent members (8) (12) and the liquid passing pipe ( 3) is temporarily fixed (4th process).
その後、前記仮止め体を所定温度に加熱することによって、上構成部材(8)の第１上水平平板部(15)と下構成部材(12)の第１下水平平板部(18)、および上構成部材(8)の第２上水平平板部(16)と下構成部材(12)の第２下水平平板部(19)とをろう付してケーシング本体(4)およびパイプ接続部(5)を形成してケーシング(2)をつくり、さらにパイプ接続部(5)に通液パイプ(3)をろう付する。このろう付の際に、上構成部材(8)の傾斜平板部(17)の下面から溶け出したろう材、および下構成部材(12)の第２下水平平板部(19)における上構成部材(8)の第２上水平平板部(16)よりも外側方に突出した部分の上面から溶け出したろう材が、傾斜平板部(17)と第２下水平平板部(19)との間に形成された空間(23)内に流入するとともに、連通溝(24)を通って、部分円錐面(11a)(14a)からなる円錐面(21)と通液パイプ(5)の外周面との間に形成された環状空間(22)、および通液パイプ(3)の環状ビード(3a)よりも外側部分の外周面とパイプ接続部(5)の内周面との間の部分内に流入する(第５工程)。したがって、環状空間(22)、空間(23)、連通溝(24)、および通液パイプ(3)の環状ビード(3a)よりも外側部分の外周面とパイプ接続部(5)の内周面との間の部分の内部に跨るように、上構成部材(8)の下面および下構成部材(12)の上面を覆っていたろう材からなるフィレット(25)が形成され、パイプ接続部(5)と通液パイプ(3)とのろう付に寄与するろう材量が多くなって、パイプ接続部(5)と通液パイプ(3)とのろう付部にろう付不良が発生することを効果的に防止される。こうして、液冷式冷却装置(1)が製造される。 Thereafter, by heating the temporary fixing body to a predetermined temperature, the first upper horizontal flat plate portion (15) of the upper component member (8), the first lower horizontal flat plate portion (18) of the lower component member (12), and The casing body (4) and the pipe connection portion (5) are brazed to the second upper horizontal flat plate portion (16) of the upper component member (8) and the second lower horizontal flat plate portion (19) of the lower component member (12). ) To form a casing (2), and a pipe (3) is brazed to the pipe connection (5). During this brazing, the brazing material melted from the lower surface of the inclined flat plate portion (17) of the upper component member (8), and the upper component member in the second lower horizontal flat plate portion (19) of the lower component member (12) ( The brazing material melted from the upper surface of the portion protruding outward from the second upper horizontal flat plate portion (16) of 8) is formed between the inclined flat plate portion (17) and the second lower horizontal flat plate portion (19). Between the conical surface (21) consisting of the partial conical surfaces (11a) and (14a) and the outer peripheral surface of the liquid-flowing pipe (5) through the communication groove (24). Into the annular space (22) formed in the outer peripheral surface of the liquid pipe (3) and the outer peripheral surface of the outer portion and the inner peripheral surface of the pipe connection portion (5). (5th process). Accordingly, the outer peripheral surface of the outer portion of the annular space (22), the space (23), the communication groove (24), and the annular bead (3a) of the liquid flow pipe (3) and the inner peripheral surface of the pipe connecting portion (5). A fillet (25) made of a brazing material covering the lower surface of the upper component member (8) and the upper surface of the lower component member (12) is formed so as to straddle the inside of the portion between the pipe connecting portion (5) The amount of brazing filler metal that contributes to brazing between the pipe and the liquid pipe (3) increases, and brazing defects occur at the brazed part between the pipe connection part (5) and the liquid pipe (3). Is prevented. Thus, the liquid cooling type cooling device (1) is manufactured.
この発明による液流通装置は、半導体素子などの発熱体を冷却する液冷式冷却装置として好適に用いられる。 The liquid circulation device according to the present invention is suitably used as a liquid cooling type cooling device for cooling a heating element such as a semiconductor element.
(1)：液冷式冷却装置（液流通装置）
(2)：ケーシング
(3)：通液パイプ
(4)：ケーシング本体
(5)：パイプ接続部
(6)：液流通部
(7)：連通部
(8)：上構成部材
(9)：第１部分
(11)：第１半円筒部
(12)：下構成部材
(13)：第２部分
(14)：第２半円筒部
(16)：第２上水平平板部
(17)：傾斜平板部
(19)：第２下水平平板部
(21)：円錐面
(22)：環状空間
(23)：空間
(24)：連通溝
(25)：フィレット
(30)：上押さえ型
(31)：下押さえ型
(34)：逃がし空間
(40)：加工治具
(41)：本体部
(42)：段部
(43)：挿入部
(44)：羽根部
(1): Liquid cooling type cooling device (liquid distribution device)
(2): Casing
(3): Fluid flow pipe
(4): Casing body
(5): Pipe connection
(6): Liquid distribution department
(7): Communication part
(8): Upper component
(9): 1st part
(11): First semi-cylindrical part
(12): Lower component
(13): Second part
(14): Second semi-cylindrical part
(16): Second upper horizontal flat plate
(17): Inclined flat plate
(19): Second lower horizontal flat plate
(21): Conical surface
(22): Annular space
(23): Space
(24): Communication groove
(25): Fillet
(30): Upper presser type
(31): Lower presser type
(34): Relief space
(40): Machining jig
(41): Main unit
(42): Step
(43): Insertion section
(44): Feather
Claims (4)
ケーシングの上構成部材が少なくとも下面がろう材で覆われたブレージングシートで形成されるとともに、同じく下構成部材が少なくとも上面がろう材で覆われたブレージングシートで形成され、ケーシングの上構成部材における第１半円筒部の両側縁部に、外側方に突出した上水平平板部が一体に設けられ、ケーシングの下構成部材における第２半円筒部の両側縁部に、外側方に突出し、かつ上構成部材の上水平平板部の幅よりも広幅であるとともに上構成部材の上水平平板部が重ね合わされた下水平平板部が一体に設けられており、上構成部材の第１半円筒部および下構成部材の第２半円筒部からなるパイプ接続部の内周面の先端に、外方に向かって拡径された円錐面が形成され、当該円錐面と通液パイプの外周面との間にパイプ接続部の先端側に向かって広がった環状空間が全周にわたって形成され、上下両水平平板部におけるパイプ接続部の開口端側の端面において、上下両水平平板部の合わせ目に、上下両水平平板部の重ね合わせ部の外側縁部と環状空間とを通じさせる連通溝が形成され、環状空間および連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットが形成されている液流通装置。 A casing having a hollow casing main body and a cylindrical pipe connecting portion communicating with the casing main body, and a liquid passing pipe connected to the pipe connecting portion of the casing are provided. The communication part includes a communication part that allows the pipe connection part to pass therethrough, and the casing forms a liquid circulation part of the casing body and a first part that forms the upper part of the communication part, and a first semi-cylindrical part that forms the upper half part of the pipe connection part An upper component member, a second part that forms the lower part of the liquid circulation part and the communication part of the casing body, and a second semi-cylindrical part that forms the lower half part of the pipe connection part. A liquid distribution device comprising a brazed lower component, wherein the liquid passing pipe is inserted into the pipe connection portion of the casing and brazed,
The upper component of the casing is formed of a brazing sheet having at least a lower surface covered with a brazing material, and the lower component is also formed of a brazing sheet having at least an upper surface of which is covered with a brazing material. Upper horizontal flat plate portions projecting outward are integrally provided on both side edge portions of the first semi-cylindrical portion, projecting outwardly on both side edge portions of the second semi-cylindrical portion of the lower component member of the casing, and upper configuration A lower horizontal flat plate portion that is wider than the upper horizontal flat plate portion of the member and overlaid with the upper horizontal flat plate portion of the upper constituent member is integrally provided, and the first semi-cylindrical portion and the lower configuration of the upper constituent member are integrally provided. A conical surface whose diameter is increased outward is formed at the tip of the inner peripheral surface of the pipe connecting portion formed of the second semi-cylindrical portion of the member, and a pipe is formed between the conical surface and the outer peripheral surface of the liquid-flowing pipe. Connection An annular space extending toward the tip side is formed over the entire circumference, and the upper and lower horizontal flat plate portions are overlapped at the joint of the upper and lower horizontal flat plate portions at the end face on the opening end side of the pipe connecting portion in the upper and lower horizontal flat plate portions. A communication groove is formed through the outer edge of the mating portion and the annular space, and a fillet made of a brazing material covering the lower surface of the upper component member and the upper surface of the lower component member so as to straddle the inside of the annular space and the communication groove. The liquid distribution device that is formed.
少なくとも片面がろう材で覆われているブレージングシートにプレス加工を施すことによって、ケーシング本体の液流通部および連通部の上部を形成する第１部分、パイプ接続部の上半部を形成する第１半円筒部、ならびに第１半円筒部の両側縁部に外側方に突出するように一体に設けられた上水平平板部を有する上構成部材と、ケーシング本体の液流通部および連通部の下部を形成する第２部分、パイプ接続部の下半部を形成する第２半円筒部、ならびに第２半円筒部の両側縁部に外側方に突出するように一体に設けられ、かつ上構成部材の上水平平板部よりも広幅であるとともに当該上水平平板部が重ね合わされる下水平平板部を有する下構成部材とを成形する第１工程と、
上下両構成部材を、上水平平板部と下水平平板部とが重なるように組み合わせた後、上下両押さえ型によって上下両構成部材の両半円筒部および両水平平板部を、両半円筒部および両水平平板部の端面が外部に露出した状態で上下から拘束する第２工程と、
円柱状本体部、本体部の一端に段部を介して一体に設けられ、かつ本体部よりも小径であるとともに上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入される円柱状挿入部、および本体部の一直径上において径方向外方に張り出すように一体に設けられ、かつ挿入部側端部が上下両水平平板部の外方に露出した端面における上下両水平平板部の合わせ目に当接する羽根部を有しており、本体部と挿入部との間の段部が、挿入部の挿入端側に向かって小径となった円錐面状となっている加工治具を使用し、
加工治具の挿入部を上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入するとともに、前記段部により両半円筒部の開口端面を押圧してパイプ接続用円筒部の内周面の先端に、外方に向かって拡径された円錐面を形成し、さらに羽根部の端部により上下両水平平板部の外方に露出した端面の合わせ目部分を押圧して一端がパイプ接続用円錐面に開口するとともに、他端が上下両水平平板部の重ね合わせ部の外側縁部に開口した連通溝を形成する第３工程と、
加工治具の挿入部を上下両構成部材の両半円筒部内から引き抜くとともに、上下両押さえ型による上下両構成部材の拘束を解除した後、通液パイプを上下両構成部材の両半円筒部からなるパイプ接続部用円筒部内に挿入し、当該パイプ接続部用円筒部の内周面の先端の円錐面と通液パイプの外周面との間に、パイプ接続部用円筒部の先端側に向かって広がった環状空間を全周にわたって形成し、この状態で上下両構成部材および通液パイプを仮止めする第４工程と、
上下両構成部材どうしをろう付して、上構成部材の第１部分および下構成部材の第２部分によりケーシング本体の液流通部および連通部をつくるとともに、上下両構成部材の半円筒部により内周面の先端に円錐面が設けられているパイプ接続部をつくることによってケーシングを形成し、さらにパイプ接続部の内周面に通液パイプをろう付し、パイプ接続部の内周面の先端の円錐面と通液パイプの外周面との間に形成された環状空間、および上下両水平平板部の端面の合わせ目部分の連通溝の内部に跨るように、上構成部材の下面および下構成部材の上面を覆っていたろう材からなるフィレットを形成する第５工程とを含む液流通装置の製造方法。 A method for producing the liquid distribution device according to claim 1,
A brazing sheet at least one surface of which is covered with a brazing material is pressed to form a first part that forms the upper part of the liquid circulation part and the communication part of the casing body, and a first part that forms the upper half of the pipe connection part. A semi-cylindrical portion, an upper constituent member having an upper horizontal flat plate portion integrally provided so as to protrude outward on both side edge portions of the first semi-cylindrical portion, and a lower portion of the liquid circulation portion and the communication portion of the casing body. A second portion to be formed, a second semi-cylindrical portion that forms the lower half of the pipe connecting portion, and an integrally provided projecting outwardly on both side edges of the second semi-cylindrical portion, and A first step of forming a lower component having a lower horizontal flat plate portion that is wider than the upper horizontal flat plate portion and on which the upper horizontal flat plate portion is superimposed;
After combining the upper and lower constituent members so that the upper horizontal flat plate portion and the lower horizontal flat plate portion overlap, both the semi-cylindrical portions and both horizontal flat plate portions of the upper and lower constituent members are combined by the upper and lower pressing molds. A second step of restraining from above and below with the end surfaces of both horizontal flat plate portions exposed to the outside;
A cylindrical main body part, which is integrally provided at one end of the main body part via a step part, and is inserted into a cylindrical part for a pipe connection part which is smaller in diameter than the main body part and is composed of both semi-cylindrical parts of upper and lower constituent members. The columnar insertion portion and the upper and lower horizontal surfaces on the end surface which are integrally provided so as to project radially outward on one diameter of the main body portion and whose insertion portion side end portions are exposed to the outer sides of the upper and lower horizontal flat plate portions Processing that has a blade part that contacts the joint of the flat plate part, and the step part between the main body part and the insertion part has a conical shape with a smaller diameter toward the insertion end side of the insertion part Using a jig,
The insertion part of the processing jig is inserted into the pipe connecting part cylindrical part composed of both the semi-cylindrical parts of the upper and lower constituent members, and the opening end surfaces of both the semi-cylindrical parts are pressed by the stepped part of the pipe connecting cylindrical part. At the tip of the inner peripheral surface, a conical surface that is expanded outward is formed, and the end of the blade is pressed by the end of the blade portion to the outside of the upper and lower horizontal flat plate portions. A third step of forming a communication groove having an opening in the conical surface for pipe connection and the other end opened in the outer edge of the overlapping portion of the upper and lower horizontal flat plate portions;
After pulling out the insertion part of the processing jig from both the semi-cylindrical parts of the upper and lower constituent members and releasing the restraint of the upper and lower constituent members by the upper and lower pressing molds, the liquid passing pipe is removed from both the semi-cylindrical parts of the upper and lower constituent members. Inserted into the cylindrical portion for the pipe connection portion, and between the conical surface at the distal end of the inner peripheral surface of the cylindrical portion for the pipe connection portion and the outer peripheral surface of the liquid passing pipe, toward the distal end side of the cylindrical portion for the pipe connection portion. A fourth step of forming a ring-shaped annular space over the entire circumference and temporarily fixing both the upper and lower constituent members and the liquid passing pipe in this state;
The upper and lower constituent members are brazed together to form a liquid circulation portion and a communicating portion of the casing body by the first portion of the upper constituent member and the second portion of the lower constituent member, and the inner part is formed by the semicylindrical portions of the upper and lower constituent members. A casing is formed by creating a pipe connection part provided with a conical surface at the tip of the peripheral surface, and a liquid passing pipe is brazed to the inner peripheral surface of the pipe connection part, and the tip of the inner peripheral surface of the pipe connection part The lower surface and the lower structure of the upper component member so as to straddle the inside of the annular space formed between the conical surface of the liquid pipe and the outer peripheral surface of the liquid passing pipe and the joint portion of the end surface of the upper and lower horizontal flat plate portions And a fifth step of forming a fillet made of a brazing material covering the upper surface of the member.
When the upper component is formed by pressing the brazing sheet in the first step, an inclined flat plate portion protruding obliquely upward is integrally provided on the outer edge of the upper horizontal flat plate portion. When restraining both semi-cylindrical parts and both horizontal flat plate parts of the upper and lower constituent members from above and below with both holding molds, the inclined flat plate part is formed on the outer side of the upper and lower horizontal flat plate parts on the lower surface of the upper holding mold. A space that extends into the outer side is formed between the inclined flat plate portion and the lower horizontal flat plate portion of the lower component member, and the space is formed by the communication groove formed in the third step. And the annular space formed in the fourth step, and when brazing the upper and lower constituent members in the fifth step and when brazing the pipe connection portion and the liquid flow pipe, the space, the communication groove and the ring So as to extend inside during manufacturing method of a liquid distribution apparatus of claim 3 wherein forming a fillet comprised of braze which covers the upper surface of the lower surface and the lower structure member of the upper component.
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