JPWO2008102815A1 - Branch pipe device - Google Patents

Branch pipe device Download PDF

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JPWO2008102815A1
JPWO2008102815A1 JP2009500217A JP2009500217A JPWO2008102815A1 JP WO2008102815 A1 JPWO2008102815 A1 JP WO2008102815A1 JP 2009500217 A JP2009500217 A JP 2009500217A JP 2009500217 A JP2009500217 A JP 2009500217A JP WO2008102815 A1 JPWO2008102815 A1 JP WO2008102815A1
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branch pipe
diameter
pipe
flat
refrigerant
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景彬 山下
景彬 山下
隆昭 佐野
隆昭 佐野
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/023—Y- pieces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

一端に断面円形状の小径接続部（３）を備え、他端に軸方向に対して直交する方向に延出される互いに平行な平面部（５）及び、これら平面部（５）の両端を連結する曲面部（６）が成形される断面扁平長円状の大径接続部（４）を備えた分岐管本体（１）と、互いに密着した状態で分岐管本体（１）の大径接続部（４）に挿入し固定される２本の接続管（１０）とからなり、大径接続部（４）に接続される接続管（１０）端部の断面形状は、大径接続部（４）の平面部（５）と面する部分が第２の平面部（１３）であり、接続管同士が面する部分が第１の平面部（１２）であり、大径接続部（４）の曲面部（６）と面する部分が曲面部（１１）に成形されることにより、ここに挿入される接続管（１０）の端部形状を従来のものよりも拡大でき、よって液体流通面積の変化を最小限に抑制して圧力損失を小さくできる。A small-diameter connecting portion (3) having a circular cross section at one end, and a parallel flat portion (5) extending in a direction orthogonal to the axial direction at the other end, and connecting both ends of these flat portions (5) A branch pipe body (1) having a large-diameter connection part (4) having a flat oval cross section in which a curved surface part (6) is formed, and a large-diameter connection part of the branch pipe body (1) in close contact with each other The cross-sectional shape of the end of the connecting pipe (10) connected to the large-diameter connecting part (4) consists of two connecting pipes (10) inserted and fixed in (4). ) Of the large diameter connecting portion (4) is the portion of the large diameter connecting portion (4) facing the flat portion (5) is the second flat portion (13), and the portion of the connecting pipes facing each other is the first flat portion (12). The portion facing the curved surface portion (6) is molded into the curved surface portion (11), so that the end portion shape of the connecting pipe (10) inserted here is larger than the conventional one. Can, therefore possible to reduce the pressure loss changes in the liquid flow area to minimize.

Description

本発明は、例えば複数の室外機と、複数の室内ユニットとを冷媒配管装置で連通してなる空気調和装置に用いられ、上記冷媒配管装置の一部を構成する分岐管装置の改良に関する。   The present invention relates to an improvement of a branch pipe device that is used in an air conditioner in which a plurality of outdoor units and a plurality of indoor units are communicated with each other through a refrigerant piping device, and constitutes a part of the refrigerant piping device.

複数の被空調箇所を備えたビルもしくは工場などの中規模建築物に配備される空気調和装置がある。この種の空気調和装置は、屋外に配置される複数台の室外機と、複数の被空調箇所それぞれに備えられる室内ユニットからなり、これら室外機と室内ユニットは冷媒配管装置を介して連通される。   There is an air conditioner deployed in a medium-scale building such as a building or factory having a plurality of air-conditioned locations. This type of air conditioner includes a plurality of outdoor units arranged outdoors and indoor units provided in each of a plurality of air-conditioned places, and these outdoor units and the indoor units communicate with each other via a refrigerant piping device. .

上記冷媒配管装置は、各室外機に接続される冷媒管と、この冷媒管と配管接続具であるジョイントを介して接続される主配管を備えている。さらに、各室内ユニットに接続される冷媒管と、この冷媒管と上記主配管とを接続する複数の分岐管装置及びヘッダ分岐管を備えている。   The refrigerant piping device includes a refrigerant pipe connected to each outdoor unit, and a main pipe connected to the refrigerant pipe via a joint which is a pipe connector. Furthermore, a refrigerant pipe connected to each indoor unit, and a plurality of branch pipe devices and header branch pipes connecting the refrigerant pipe and the main pipe are provided.

特に上記分岐管装置は、略Ｙ字状をなす分岐管本体と、この分岐管本体に接続される２本の接続管とから構成される。分岐管装置は、分岐管本体の一端部に導かれた冷媒を２本の接続管に分流案内するようになっていて、複数備えて、いわゆる枝分かれ状に冷媒を各室内ユニットに導く。あるいは室内ユニットから室外機への戻り冷媒を案内する。   In particular, the branch pipe device is composed of a branch pipe body having a substantially Y shape and two connection pipes connected to the branch pipe body. The branch pipe device is configured to divert and guide the refrigerant guided to one end of the branch pipe main body to the two connection pipes. The branch pipe device includes a plurality of refrigerant pipes, and guides the refrigerant to each indoor unit in a so-called branch shape. Alternatively, the return refrigerant from the indoor unit to the outdoor unit is guided.

上記分岐管装置は、例えば実用新案登録第３１１８０３３号公報に開示されるように構成される。すなわち、分岐管本体は、一端である分岐挿入部を素管そのままの大径管状部とし、他端部を絞り加工して小径管状部としている。上記接続管の端部は、分岐管本体の大径管状部内径に対応するよう成形され、互いに密着した状態で挿入固定される。   The branch pipe device is configured as disclosed in, for example, Utility Model Registration No. 3118033. That is, the branch pipe main body has a branch insertion portion at one end as a large-diameter tubular portion as it is, and the other end is drawn into a small-diameter tubular portion. The end of the connecting pipe is formed to correspond to the inner diameter of the large-diameter tubular portion of the branch pipe body, and is inserted and fixed in a state of being in close contact with each other.

ところで実用新案登録第３１１８０３３号公報に開示された分岐管本体は、小径管状部の断面形状が円形状であり、大径管状部の断面形状は素管そのままの円形状となっている。そのため、大径管状部に挿入される２本の接続管は端部のみ、例えばスウェージング加工等により断面半円形状に加工し、端部を除く大部分は、そのまま円形状をなしている。   Incidentally, the branch pipe body disclosed in Utility Model Registration No. 3118033 has a circular cross-sectional shape of the small-diameter tubular portion, and a cross-sectional shape of the large-diameter tubular portion is a circular shape as it is as a raw tube. For this reason, the two connecting pipes inserted into the large-diameter tubular portion are processed into a semicircular cross section by, for example, a swaging process or the like only at the end portion, and most of the portion excluding the end portion has a circular shape as it is.

分岐管装置において分岐管本体の小径管状部に導入された冷媒は、大径管状部から各接続管に導出される。冷媒流通面積としては、大径管状部に接続される接続管端部は半円形状に成形されているから、冷媒流通面積は一気に縮小し、冷媒管が接続される接続管端部は円形状をなしているから、冷媒流通面積は増大する。   In the branch pipe device, the refrigerant introduced into the small diameter tubular portion of the branch pipe main body is led out from the large diameter tubular portion to each connection pipe. As the refrigerant distribution area, the connection pipe end connected to the large-diameter tubular part is formed in a semicircular shape, so the refrigerant distribution area is reduced at a stretch and the connection pipe end connected to the refrigerant pipe is circular. Therefore, the refrigerant distribution area increases.

このように、分岐管装置において冷媒流通面積が大きく変化するように成形されていて、ここを通過する冷媒の圧力損失が大きくなり、空調能力に影響を及ぼすという問題があった。   As described above, in the branch pipe device, the refrigerant flow area is shaped so as to change greatly, and there is a problem that the pressure loss of the refrigerant passing through the branch pipe device increases and affects the air conditioning capacity.

そこで本発明は、分岐管本体の大径接続部を断面扁平長円状とすることにより、挿入される接続管の端部形状を従来のものよりも拡大でき、よって液体流通面積の変化を最小限に抑制し、圧力損失を小さくて信頼性の向上を得られる分岐管装置を提供することを目的としている。   Therefore, in the present invention, the large-diameter connecting portion of the branch pipe main body has a flat oval cross section, so that the end shape of the connecting pipe to be inserted can be expanded as compared with the conventional one, thereby minimizing the change in the liquid flow area. An object of the present invention is to provide a branch pipe device that can be suppressed to the limit and that can improve the reliability by reducing the pressure loss.

上記目的を満足するため本発明の分岐管装置は、一端に断面円形状の小径接続部を備え、他端に軸方向に対して直交する方向に延出される互いに平行な平面部及び平面部の両端を連結する曲面部が成形される断面扁平長円状の大径接続部を備えた分岐管本体と、互いに密着した状態で分岐管本体の大径接続部に挿入し固定される２本の接続管とからなり、大径接続部に接続される前記接続管端部の断面形状は、大径接続部の平面部と面する部分及び接続管同士が面する部分が平面部であり、大径接続部の曲面部と面する部分が曲面部に成形される。   In order to satisfy the above object, the branch pipe device of the present invention has a small-diameter connecting portion having a circular cross section at one end and a parallel flat portion and a flat portion extending in a direction orthogonal to the axial direction at the other end. A branch pipe body provided with a large-diameter connecting portion having a flat oval cross-section in which curved portions connecting both ends are formed, and two fixed and inserted into the large-diameter connecting portion of the branch pipe main body in close contact with each other The cross-sectional shape of the connecting pipe end portion, which is formed of a connecting pipe and connected to the large-diameter connecting portion, is a flat portion in which the portion facing the flat portion of the large-diameter connecting portion and the portion facing the connecting pipes are flat portions. A portion facing the curved surface portion of the diameter connecting portion is formed into the curved surface portion.

図１は、本発明の一実施の形態に係る分岐管装置を示す正面図である。FIG. 1 is a front view showing a branch pipe device according to an embodiment of the present invention. 図２は、同分岐管装置に組み込まれた分岐管本体を示す正面図。FIG. 2 is a front view showing a branch pipe body incorporated in the branch pipe device. 図３Ａは、同分岐管本体の一端側を示す側面図。FIG. 3A is a side view showing one end side of the branch pipe body. 図３Ｂは、同分岐管本体の他端側を示す側面図。FIG. 3B is a side view showing the other end side of the branch pipe body. 図４は、同分岐管本体の大径接続部に一対の接続管を挿入した状態を示す断面図。FIG. 4 is a cross-sectional view showing a state in which a pair of connecting pipes are inserted into a large-diameter connecting portion of the branch pipe main body. 図５は、同分岐管装置を備えた空気調和装置の概略を示す構成図。FIG. 5 is a configuration diagram illustrating an outline of an air-conditioning apparatus including the branch pipe device.

以下、本発明の一実施の形態を図面に基づいて説明するに、分岐管装置Ｓを空気調和装置Ｋにおける冷媒配管装置Ｒの構成部品として用いることとする。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The branch pipe device S is used as a component of the refrigerant piping device R in the air conditioner K.

はじめに、図５から空気調和装置Ｋの概略構成について説明する。ここに示される空気調和装置Ｋは、複数の空調箇所を備えた中規模建築物に適用するのに最適である。   First, a schematic configuration of the air conditioner K will be described with reference to FIG. The air conditioning apparatus K shown here is optimal for application to a medium-scale building having a plurality of air-conditioning locations.

空気調和装置Ｋは、屋外に配置される複数台の室外機１００と、建築物内の被空調箇所（被空調室）に取付けられる複数の室内ユニット２００と、それぞれの室外機１００と室内ユニット２００とを連通する冷媒配管装置Ｒとから構成される。通常、冷媒配管装置Ｒは、ガス側配管１系統および液側配管１系統の計２系統の主配管、または、ガス側配管２系統および液側配管１系統の計３系統の主配管で構成されるが、図５では、上記のうちのいずれか１系統の主配管で説明する。この冷媒配管装置Ｒの一部に後述する分岐管装置Ｓがある。   The air conditioner K includes a plurality of outdoor units 100 arranged outdoors, a plurality of indoor units 200 attached to an air-conditioned location (air-conditioned room) in a building, and each outdoor unit 100 and indoor unit 200. And a refrigerant piping device R that communicates with each other. Usually, the refrigerant piping device R is composed of two main pipes including one gas side pipe and one liquid side pipe, or three main pipes including two gas side pipes and one liquid side pipe. However, in FIG. 5, it demonstrates by the main piping of any one of the above. A branch pipe device S, which will be described later, is part of the refrigerant piping device R.

全ての上記室外機１００が、必ずしも同一位置に集中して配置されるとは限定されず、屋外の状況に応じて、そのうちの１台もしくは複数台の室外機１００は他の室外機１００とは離間した位置、もしくは高低差がある位置に配置される。これら室外機１００には冷媒配管装置Ｒを構成する冷媒管Ｐａが接続される。   It is not necessarily limited that all the outdoor units 100 are concentrated at the same position. Depending on the outdoor situation, one or more of the outdoor units 100 may be different from other outdoor units 100. It is arranged at a separated position or a position with a height difference. These outdoor units 100 are connected to a refrigerant pipe Pa constituting the refrigerant piping device R.

それぞれの冷媒管Ｐａの端部にはＴ形分岐ジョイントｄを介して主配管Ｐｂが接続される。上記主配管Ｐｂは屋外から建築物内へ延出され、ここに設けられる分岐管装置Ｓである第１分岐管Ｓａに接続される。上記第１分岐管ＳａはＹ字状をなし、その一端側の接続部に上記主配管Ｐｂが接続される。   A main pipe Pb is connected to the end of each refrigerant pipe Pa via a T-shaped branch joint d. The main pipe Pb extends from the outside into the building and is connected to a first branch pipe Sa that is a branch pipe device S provided here. The first branch pipe Sa has a Y shape, and the main pipe Pb is connected to a connecting portion on one end side thereof.

第１分岐管Ｓａの他端側の二つの接続部には、それぞれ分岐配管Ｐｃが接続されていて、一方の分岐配管Ｐｃはヘッダ分岐管ｅの基端部に接続される。上記ヘッダ分岐管ｅは複数の接続部を備えていて、１つの接続部を除く他の接続部は室内ユニット接続配管Ｐｄを介して室内ユニット２００に連通する。   A branch pipe Pc is connected to each of the two connection portions on the other end side of the first branch pipe Sa, and one branch pipe Pc is connected to a base end portion of the header branch pipe e. The header branch pipe e includes a plurality of connection portions, and the other connection portions except for one connection portion communicate with the indoor unit 200 via the indoor unit connection pipe Pd.

ヘッダ分岐管ｅの残りの接続部は、接続配管Ｐｄと分岐管装置Ｓである第２分岐管Ｓｂを介して２台の室内ユニット２００に連通する。上記第１分岐管Ｓａに接続される他方の分岐配管Ｐｃに、分岐管装置Ｓである第３分岐管Ｓｃが接続され、この第３分岐管Ｓｃの一方の接続部は室内ユニット接続配管Ｐｅを介して室内ユニット２００に連通される。   The remaining connection portion of the header branch pipe e communicates with the two indoor units 200 via the connection pipe Pd and the second branch pipe Sb which is the branch pipe device S. A third branch pipe Sc, which is a branch pipe device S, is connected to the other branch pipe Pc connected to the first branch pipe Sa, and one connection portion of the third branch pipe Sc is connected to the indoor unit connection pipe Pe. Via the indoor unit 200.

第３分岐管Ｓｃの他方の接続部は分岐配管Ｐｆを介して分岐管装置Ｓである第３分岐管Ｓｃに接続される。以下同様に、第３分岐管Ｓｃの一方の接続部は室内ユニット接続配管Ｐｅを介して室内ユニット２００に連通され、他方の接続部は第３分岐管Ｓｃと分岐配管Ｐｆを介して分岐管装置Ｓである第３分岐管Ｓｃに接続される。   The other connecting portion of the third branch pipe Sc is connected to the third branch pipe Sc, which is the branch pipe device S, via the branch pipe Pf. Similarly, one connecting portion of the third branch pipe Sc is communicated with the indoor unit 200 via the indoor unit connecting pipe Pe, and the other connecting portion is connected to the branch pipe device via the third branch pipe Sc and the branch pipe Pf. S is connected to the third branch pipe Sc.

最終の第３分岐管Ｓｃにおいては、両方の接続部に室内ユニット接続配管Ｐｅを介して室内ユニット２００が接続される。このようにして空気調和装置Ｋは、複数台の室外機１００及び複数台の室内ユニット２００が、分岐管装置Ｓを備えた冷媒配管装置Ｒを介して連通されている。   In the final third branch pipe Sc, the indoor unit 200 is connected to both connection portions via the indoor unit connection pipe Pe. In this way, in the air conditioner K, a plurality of outdoor units 100 and a plurality of indoor units 200 are communicated with each other via the refrigerant piping device R including the branch pipe device S.

次に、冷媒配管装置Ｒを構成する分岐管装置Ｓについて説明する。   Next, the branch pipe device S constituting the refrigerant piping device R will be described.

図１は分岐管装置Ｓの構成図であり、一部を切欠して示す。   FIG. 1 is a configuration diagram of the branch pipe device S, with a part cut away.

この分岐管装置Ｓは、１本の分岐管本体１と２本の接続管１０とから構成される。すなわち、分岐管本体１の一端部に２本の接続管１０の一端部が挿入され、例えばロー付け加工により一体に連結される。分岐管装置Ｓの周囲に描く二点鎖線は、分岐管装置Ｓに装着される断熱材Ｄを現している。   The branch pipe device S includes a single branch pipe main body 1 and two connection pipes 10. That is, one end portion of the two connecting pipes 10 is inserted into one end portion of the branch pipe body 1 and is integrally connected by, for example, brazing. A two-dot chain line drawn around the branch pipe device S represents the heat insulating material D attached to the branch pipe device S.

この断熱材Ｄは、上下に２分割され、分岐管装置Ｓを挟み込むようにして装着される。また、断熱材Ｄは、その長手方向長さが、分岐管装置Ｓの長手方向長さよりも長く設けられている。これにより、分岐管装置Ｓが搬送中に誤って落下した場合等に、分岐管装置Ｓの端部の変形を防止できる。   This heat insulating material D is divided into two parts in the vertical direction, and is mounted so as to sandwich the branch pipe device S. The longitudinal length of the heat insulating material D is longer than the longitudinal length of the branch pipe device S. Thereby, when the branch pipe apparatus S falls accidentally during conveyance, the deformation | transformation of the edge part of the branch pipe apparatus S can be prevented.

図２は分岐管装置Ｓを構成する分岐管本体１の正面図であり、図３Ａは分岐管本体１の一端側の側面図、図３Ｂは分岐管本体１の他端側の側面図である。   2 is a front view of the branch pipe main body 1 constituting the branch pipe device S, FIG. 3A is a side view of one end side of the branch pipe main body 1, and FIG. 3B is a side view of the other end side of the branch pipe main body 1. .

上記分岐管本体１は、断面円形状で軸方向に沿って直状に成形される直管部２の一端に、直管部２の内径よりも若干大きな内径を有するよう膨出成形される断面円形状の小径接続部３を備えている。上記直管部２の他端には後述する大径接続部４が設けられていて、この大径接続部４は断面扁平長円状に成形される。   The branch pipe body 1 has a circular cross section and is swelled and formed at one end of a straight pipe portion 2 that is formed straight along the axial direction so as to have an inner diameter slightly larger than the inner diameter of the straight pipe portion 2. A circular small diameter connecting portion 3 is provided. A large-diameter connection portion 4 to be described later is provided at the other end of the straight pipe portion 2, and the large-diameter connection portion 4 is formed into a flat oval cross section.

上記大径接続部４は、直管部２の軸方向に対して直交する方向に延出され互いに平行な平面部５及び、これら平面部５の両端を連結する半円形状の曲面部６とからなる。上記平面部５は直管部２の内径と一致する間隔を存し、平面部５の長手方向長さは直管部２の直径と一致する。上記曲面部６の半径は、直管部２の半径と一致するように成形される。   The large-diameter connecting portion 4 includes a planar portion 5 that extends in a direction perpendicular to the axial direction of the straight pipe portion 2 and is parallel to each other, and a semicircular curved surface portion 6 that connects both ends of the planar portion 5. Consists of. The flat portion 5 has an interval that matches the inner diameter of the straight pipe portion 2, and the longitudinal length of the flat portion 5 matches the diameter of the straight pipe portion 2. The radius of the curved surface portion 6 is formed to coincide with the radius of the straight pipe portion 2.

このことから、上記大径接続部４は、直管部２の端部を例えばバルジ加工により、両端を半円状とし、中間部が直状平面をなす断面扁平長円状に膨張形成する。そして、膨張部の中央部分を、軸方向に対して直交する方向に分断することにより成形できることとなる。   From this, the large-diameter connecting portion 4 is formed in an inflated shape with a cross-sectional oblong shape in which the end of the straight pipe portion 2 is semicircular at both ends, for example, by bulging, and the intermediate portion forms a straight flat surface. And it will be able to shape | mold by dividing the center part of an expansion | swelling part in the direction orthogonal to an axial direction.

特に、大径接続部４における平面部５の中間部分には、軸方向に沿って内側に突出する突起部７が一体に設けられる。換言すれば、この突起部７を境に平面部５が分断され、分断側のそれぞれの端部に曲面部６を備えている。上記突起部７の突出量は極くわずかでよく、互いに同一に成形する必要がある。   In particular, a protruding portion 7 that protrudes inward along the axial direction is integrally provided at an intermediate portion of the flat surface portion 5 in the large diameter connecting portion 4. In other words, the flat surface portion 5 is divided at the projection 7 as a boundary, and the curved surface portion 6 is provided at each end portion on the divided side. The protruding amount of the protruding portion 7 may be very small and needs to be formed identically.

このような分岐管本体１の大径接続部４に、２本の接続管１０の端部が挿入される。図４は、大径接続部４に２本の接続管１０端部を挿入した状態での断面図である。   The ends of the two connecting pipes 10 are inserted into the large-diameter connecting part 4 of the branch pipe main body 1. FIG. 4 is a cross-sectional view of the large-diameter connection portion 4 with two end portions of the connection pipe 10 inserted.

上記接続管１０端部の断面形状は、軸方向と直交する方向で、一端が半円状の曲面部１１であり、この曲面部１１と対向する他端が平面部１２となっている。これら曲面部１１と平面部１２は互いに平行に対向する平面部１３によって連結される。換言すれば、平面部１２，１３を断面コ字状に組合せ、この開放端部を曲面部１１で閉成している。   The cross-sectional shape of the end portion of the connecting pipe 10 is a direction perpendicular to the axial direction, one end being a semicircular curved surface portion 11, and the other end facing the curved surface portion 11 is a flat surface portion 12. The curved surface portion 11 and the flat surface portion 12 are connected by a flat surface portion 13 facing in parallel with each other. In other words, the flat surface portions 12 and 13 are combined in a U-shaped cross section, and the open end portion is closed by the curved surface portion 11.

説明の都合上、曲面部１１と対向する位置にある平面部１２を「第１の平面部」と呼ぶ。そして、この第１の平面部１２と直交する方向に設けられ、かつ曲面部１１と第１の平面部１２の端部相互を連結する平面部１３を「第２の平面部」と呼ぶ。したがって、第２の平面部１３は互いに平行して一対設けられることになる。   For convenience of explanation, the flat surface portion 12 at a position facing the curved surface portion 11 is referred to as a “first flat surface portion”. The plane portion 13 provided in a direction orthogonal to the first plane portion 12 and connecting the curved surface portion 11 and the end portions of the first plane portion 12 is referred to as a “second plane portion”. Accordingly, a pair of the second plane portions 13 are provided in parallel with each other.

上記２本の接続管１０一端部の断面形状は上述のとおりであるが、それぞれの他端部の断面形状は断面円形状である。すなわち、各接続管１０は断面円形状をなす通常のパイプであって、一端部を拡管（フレア）加工後に成形して、図４に示すように加工される。これら端部は分岐管本体１の大径接続部４に挿入され、ロー付け等の手段で固定される。   The cross-sectional shape of one end of the two connecting pipes 10 is as described above, but the cross-sectional shape of each other end is a circular cross-section. That is, each connection pipe 10 is a normal pipe having a circular cross section, and one end portion is formed after pipe expansion (flaring) processing and processed as shown in FIG. These end portions are inserted into the large-diameter connecting portion 4 of the branch pipe body 1 and fixed by means such as brazing.

具体的には、各接続管１０の第１の平面部１２相互を密に接する。この状態で各接続管１０は、互いの曲面部１１間に亘って長い断面扁平長円形状になる。そして、各接続管１０の曲面部１１相互を分岐管本体１の大径接続部４における曲面部６相互に正しく対向したうえで、両接続管１０端部を大径接続部４に挿入する。   Specifically, the first plane portions 12 of the connection pipes 10 are in close contact with each other. In this state, each connecting pipe 10 has a long cross-sectional oblong shape extending between the curved surface portions 11. Then, the curved surface portions 11 of the connecting pipes 10 are correctly opposed to the curved surface portions 6 of the large-diameter connecting portion 4 of the branch pipe body 1, and the end portions of both connecting tubes 10 are inserted into the large-diameter connecting portion 4.

大径接続部平面部５の中間部分に設けられる突起部７を境にして、各接続管１０端部が挿入される。各接続管１０の第１の平面部１２相互はそのまま密に面し、第２の平面部１３は大径接続部４の平面部５と密に面し、各接続管１０の曲面部１１は大径接続部４の曲面部６と密に面する。   The ends of the connecting pipes 10 are inserted with a projection 7 provided at an intermediate portion of the large-diameter connecting portion plane portion 5 as a boundary. The first flat surface portions 12 of each connection pipe 10 face each other as they are, the second flat surface portion 13 closely faces the flat surface portion 5 of the large-diameter connection portion 4, and the curved surface portions 11 of the respective connection pipes 10 It closely faces the curved surface portion 6 of the large diameter connecting portion 4.

各接続管１０の第１の平面部１２と第２の平面部１３とで形成される角部１４間に、大径接続部平面部５に設けられる突起部７が挿入位置する。したがって、各接続管１０の第１の平面部１２相互を密に面した状態では対向する角部１４相互に隙間があるが、接続管１０端部相互を大径接続部４に挿入した状態で角部１４相互間に隙間は存在しない。   The protrusion 7 provided on the large-diameter connection portion plane portion 5 is inserted between the corner portions 14 formed by the first plane portion 12 and the second plane portion 13 of each connection pipe 10. Therefore, in the state where the first flat portions 12 of the connection pipes 10 are closely facing each other, there is a gap between the opposing corner portions 14, but the end portions of the connection pipe 10 are inserted into the large-diameter connection portion 4. There is no gap between the corners 14.

各接続管１０の端部を分岐管本体１の大径接続部４に挿入して仮保持し、大径接続部４の端部に沿ってロー付け加工をなす。分岐管本体１に各接続管１０が同時に取付け固定され、分岐管装置Ｓが得られる。大径接続部４の全周に亘って接続管１０相互が密に接しているから、ローが盛り易く、確実なロー付け加工ができる。   The end of each connecting pipe 10 is inserted into the large diameter connecting portion 4 of the branch pipe main body 1 and temporarily held, and brazing is performed along the end of the large diameter connecting portion 4. Each connecting pipe 10 is attached and fixed to the branch pipe body 1 at the same time, and the branch pipe device S is obtained. Since the connecting pipes 10 are in close contact with each other over the entire circumference of the large-diameter connecting portion 4, the brazing is easy to be performed and a reliable brazing process can be performed.

例えば、大径接続部４に突起部７が設けられておらず、全てが単なる平面部５である場合は、平面部５と角部１４との間に隙間が生じるので、ロー材にて隙間を埋める必要がある。しかしながら、ここでは接続管１０の角部１４相互間に突起部７が挿入しているので隙間がなく、ロー材で埋める作業は不要である。   For example, when the protruding portion 7 is not provided in the large diameter connecting portion 4 and all are simply the flat portions 5, a gap is generated between the flat portion 5 and the corner portion 14. Need to fill. However, since the projections 7 are inserted between the corners 14 of the connecting pipe 10 here, there is no gap, and the work of filling with brazing material is unnecessary.

このようにして分岐管装置Ｓを構成して、再び図５に示すように取付ける。冷媒は小径接続部３に接続する配管から直管部２に導かれ、さらに大径接続部４に案内される。そして、大径接続部４に挿入固定される接続管１０のそれぞれに導かれ、この接続管１０に接続される冷媒管に案内されて室内ユニット２００に導かれる。   In this way, the branch pipe device S is configured and attached again as shown in FIG. The refrigerant is guided from the pipe connected to the small diameter connecting portion 3 to the straight pipe portion 2 and further guided to the large diameter connecting portion 4. And it guide | induces to each of the connection pipe 10 inserted and fixed to the large diameter connection part 4, is guided to the refrigerant | coolant pipe | tube connected to this connection pipe 10, and is guide | induced to the indoor unit 200.

なお分岐管装置Ｓにおいて、小径接続部３に接続する配管と直管部２の冷媒流通面積は互いに同一であるから、ここでの圧力損失はない。冷媒は直管部２から大径接続部４に導かれて接続管１０端部に分流する。個々の接続管１０端部の冷媒流通面積は、直管部２の冷媒流通面積よりも若干大ではあるが、極端に大ではない。   In the branch pipe device S, since the refrigerant flow areas of the pipe connected to the small diameter connecting portion 3 and the straight pipe portion 2 are the same, there is no pressure loss here. The refrigerant is guided from the straight pipe portion 2 to the large-diameter connection portion 4 and is branched to the end portion of the connection pipe 10. The refrigerant distribution area at the end of each connecting pipe 10 is slightly larger than the refrigerant distribution area of the straight pipe section 2 but is not extremely large.

したがって、直管部２から接続管１０端部に冷媒が導かれたときに、わずかな圧力損失ですむ。接続管１０端部から出た冷媒は断面円形状の部分に導かれるが、冷媒流通面積の変化はわずかであるから、圧力損失もわずかですむ。結局、分岐管装置Ｓは冷媒流通面積を拡大でき、冷媒の圧力損失はわずかで熱交換性能及び信頼性の向上を得られる。   Therefore, when the refrigerant is introduced from the straight pipe portion 2 to the end of the connection pipe 10, only a slight pressure loss is required. The refrigerant coming out from the end of the connecting pipe 10 is guided to a circular section, but the change in the refrigerant flow area is small, so that the pressure loss is also small. Eventually, the branch pipe device S can expand the refrigerant flow area, and the pressure loss of the refrigerant is small so that the heat exchange performance and the reliability can be improved.

なお、以上は室外機から室内ユニットへの冷媒の流れについて説明したが、実際には室内ユニット２００から室外機１００への冷媒の戻りの流れもある。ここにも分岐管装置Ｓが備えられ、上述とは逆方向に冷媒が流通する。この場合も、冷媒の圧力損失はわずかですみ、熱交換性能及び信頼性の向上を得られる。   In addition, although the above demonstrated the flow of the refrigerant | coolant from an outdoor unit to an indoor unit, in fact, there also exists a return flow of the refrigerant | coolant from the indoor unit 200 to the outdoor unit 100. FIG. The branch pipe device S is also provided here, and the refrigerant flows in the opposite direction to the above. Also in this case, the pressure loss of the refrigerant is small, and the heat exchange performance and reliability can be improved.

さらに、空気調和装置Ｋを構成する冷媒配管装置Ｒに分岐管装置Ｓを備えて、冷媒を導くように説明したが、これに限定されるものではなく、他の流体を導く配管装置に備えるようにしてもよい。   Further, the refrigerant pipe device R constituting the air conditioner K is provided with the branch pipe device S to guide the refrigerant. However, the present invention is not limited to this, and the refrigerant pipe device R is provided with a pipe device that guides another fluid. It may be.

そして、本発明は上述した実施の形態そのままに限定されるものではなく、実施段階では要旨を逸脱しない範囲で構成要素を変形して具体化でき、上述した実施の形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。   The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope in the implementation stage, and a plurality of components disclosed in the above-described embodiment can be used. Various inventions can be formed by appropriately combining the constituent elements.

本発明によれば、流体の流通面積を拡大して圧力損失の低減化を図ることができ、信頼性の向上化を得られる等の効果を奏する。   ADVANTAGE OF THE INVENTION According to this invention, there can exist an effect that the circulation area of a fluid can be expanded and pressure loss can be reduced and the improvement of reliability can be obtained.

Claims (2)

一端に断面円形状の小径接続部を備え、他端に軸方向に対して直交する方向に延出される互いに平行な平面部及び、これら平面部の両端を連結する曲面部が成形される断面扁平長円状の大径接続部を備えた分岐管本体と、
互いに密着した状態で上記分岐管本体の前記大径接続部に挿入し固定される２本の接続管と
からなる分岐管装置であって、
前記大径接続部に接続される前記接続管端部の断面形状は、
前記大径接続部の平面部と面する部分及び前記接続管同士が面する部分が平面部であり、前記大径接続部の曲面部と面する部分が曲面部に成形されることを特徴とする分岐管装置。A flat cross section in which a small-diameter connecting portion having a circular cross section is provided at one end, a parallel flat portion extending in a direction orthogonal to the axial direction at the other end, and a curved portion connecting both ends of the flat portion are formed. A branch pipe body with an oval large-diameter connection,
A branch pipe device comprising two connection pipes that are inserted into and fixed to the large-diameter connection portion of the branch pipe main body in close contact with each other;
The cross-sectional shape of the connecting pipe end connected to the large diameter connecting portion is:
The portion facing the flat portion of the large diameter connecting portion and the portion facing the connecting pipes are flat portions, and the portion facing the curved portion of the large diameter connecting portion is formed into a curved portion. Branch pipe device to do. 上記分岐管本体の大径接続部における平面部の中間部分に、軸方向に沿って内側に突出する突起部が設けられることを特徴とする請求項１記載の分岐管装置。   2. The branch pipe device according to claim 1, wherein a projection that protrudes inward along the axial direction is provided at an intermediate portion of the flat surface portion in the large-diameter connection portion of the branch pipe main body.
JP2009500217A 2007-02-22 2008-02-20 Branch pipe device Pending JPWO2008102815A1 (en)

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WO2012043804A1 (en) * 2010-10-01 2012-04-05 シャープ株式会社 Heat exchange device, evaporator, and refrigeration storage unit
JP5319639B2 (en) * 2010-10-01 2013-10-16 シャープ株式会社 Evaporator and refrigerator using the same
CN105299348A (en) * 2015-10-14 2016-02-03 珠海格力电器股份有限公司 Air-conditioning pipeline connecting device and air-conditioning system

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JP2006329412A (en) * 2005-05-30 2006-12-07 Calsonic Kansei Corp Piping comprising multi-drilled pipe and a plurality of branch pipes, its connecting structure, processing method, and branch pipe forming method

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JPS52143515A (en) * 1976-05-25 1977-11-30 Toyota Motor Corp Tube dividing device
JPH10339521A (en) * 1997-06-10 1998-12-22 Gou Shoji Kk Branching pipe for refrigerant
JP2008002559A (en) * 2006-06-22 2008-01-10 Kakinuma Kinzoku Seiki Kk Pipe flow divider for refrigerant cycle

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JPS54156223U (en) * 1978-04-24 1979-10-30
JPS61160512A (en) * 1985-01-08 1986-07-21 Yamaha Motor Co Ltd Exhaust pipe manifold structure in vehicle engine
JP2006329412A (en) * 2005-05-30 2006-12-07 Calsonic Kansei Corp Piping comprising multi-drilled pipe and a plurality of branch pipes, its connecting structure, processing method, and branch pipe forming method

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