JP2007051823A - Refrigerant branch pipe - Google Patents
Refrigerant branch pipe Download PDFInfo
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- JP2007051823A JP2007051823A JP2005237164A JP2005237164A JP2007051823A JP 2007051823 A JP2007051823 A JP 2007051823A JP 2005237164 A JP2005237164 A JP 2005237164A JP 2005237164 A JP2005237164 A JP 2005237164A JP 2007051823 A JP2007051823 A JP 2007051823A
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Abstract
Description
本発明は、冷凍サイクルの冷媒分流に使用される冷媒分岐管に関するものである。 The present invention relates to a refrigerant branch pipe used for refrigerant branching in a refrigeration cycle.
従来、この種の冷媒分岐管は、冷媒が流入する入口管と、この入口管から流入した冷媒を複数の流路へ分岐させる分岐部と、分岐部を介して流れる冷媒を流出させる複数の出口管とを備え、入口管からの流入方向に対向する分岐部の内壁面の適宜位置に、冷媒の流れを規制する分岐用突出部を設けるように構成し、気液ニ相状態の冷媒の分流を均等或いは所定の比率にて行うようにして、冷媒管の細径化と圧力損失の低減を両立させ、空調機器や冷凍機器に使用される熱交換器の効率促進を図っているものがある(例えば、特許文献1参照)。 Conventionally, this type of refrigerant branch pipe includes an inlet pipe into which the refrigerant flows, a branch section that branches the refrigerant that flows in from the inlet pipe into a plurality of flow paths, and a plurality of outlets that flows out the refrigerant flowing through the branch sections. And a branching protrusion for restricting the flow of the refrigerant is provided at an appropriate position on the inner wall surface of the branching part facing the inflow direction from the inlet pipe, and the branching of the refrigerant in the gas-liquid two-phase state Is performed at an equal or predetermined ratio to achieve both a reduction in the diameter of the refrigerant pipe and a reduction in pressure loss, and to promote the efficiency of heat exchangers used in air conditioning equipment and refrigeration equipment. (For example, refer to Patent Document 1).
また、入口管から分岐部に至る管内に、冷媒分岐管本体が取り付けられている重力方向に沿って複数の流路に分割する隔壁を備えた構成としているものもある(例えば、特許文献2参照)。 In addition, there is a configuration in which a partition that divides into a plurality of flow paths is provided in a pipe extending from an inlet pipe to a branching portion along a gravity direction in which a refrigerant branch pipe main body is attached (for example, see Patent Document 2). ).
図5は、特許文献1に記載された従来の冷媒分岐管を示すものである。図5に示すように、入口管1と、分岐部2と、出口管3と、分岐用突起部41とを備え、例えば、冷媒分岐管本体を出口管3の出口3a,3bが上下に並ぶように配置した場合において、冷媒流れSに示すように入口管1を介して気液混合状態で流入した冷媒が、分岐部2内にて出口管3に分流する際に、重力の影響によって下側、すなわち出口3bに多く流れようとするのに対して、分岐用突出部41によって、出口管3への流路の開口率を調整して均等に流れるように構成されている。 FIG. 5 shows a conventional refrigerant branch pipe described in Patent Document 1. As shown in FIG. As shown in FIG. 5, an inlet pipe 1, a branch part 2, an outlet pipe 3, and a branching projection part 41 are provided. For example, the outlets 3 a and 3 b of the outlet pipe 3 are arranged vertically in the refrigerant branch pipe body. When the refrigerant flows in the gas-liquid mixed state via the inlet pipe 1 as shown in the refrigerant flow S, the refrigerant flows into the outlet pipe 3 in the branch portion 2 due to the influence of gravity. A large amount of fluid flows to the side, that is, the outlet 3b, while the branching projecting portion 41 adjusts the opening ratio of the flow path to the outlet pipe 3 so as to flow evenly.
図6は、特許文献2に記載された従来の冷媒分岐管を示すものである。図6に示すように、入口管1と、分岐部2と、出口管3と、らせん板21とを備え、らせん板21は入口管1の内側に挿入されている。例えば、冷媒流れSに示すように入口管1内で環状流に近い状態で気液分離した冷媒が流入した場合、らせん板21によって気液が乱流混合した後、分岐部2にて分流されることで、出口管3の出口3a,3bへ流れる冷媒が均等になるように構成されている。 FIG. 6 shows a conventional refrigerant branch pipe described in Patent Document 2. As shown in FIG. As shown in FIG. 6, an inlet pipe 1, a branch portion 2, an outlet pipe 3, and a spiral plate 21 are provided. The spiral plate 21 is inserted inside the inlet pipe 1. For example, as shown in the refrigerant flow S, when the refrigerant separated from the gas and liquid in the state of being close to the annular flow flows in the inlet pipe 1, the gas and liquid are turbulently mixed by the spiral plate 21 and then divided by the branching section 2. Thus, the refrigerant flowing to the outlets 3a and 3b of the outlet pipe 3 is configured to be uniform.
図7は、冷媒分岐管を使用した熱交換器が備えられた空気調和機の室内機の断面図で、冷媒分岐管の適用の一例として示す。室内機の本体22の内部には送風機23と熱交換器24を有し、熱交換器24の冷媒流路に冷媒分岐管25が使用されている。
しかしながら、特許文献1の構成では、出口管が上下方向に分岐する形態の取り付け姿勢においては、分岐部の内壁面の適宜位置が実験により決定できるが、図7に示すように分岐管を備えた熱交換器が傾斜した取り付け姿勢であり、冷媒分岐管の取り付け角度が機器毎に異なる場合においては、都度分岐用突起部の位置を決定するための実験などの検討を行う必要があるので、非効率的であるという課題を有していた。 However, in the configuration of Patent Document 1, in the mounting posture in which the outlet pipe branches in the vertical direction, the appropriate position of the inner wall surface of the branch portion can be determined by experiment, but the branch pipe is provided as shown in FIG. If the mounting position of the heat exchanger is inclined and the mounting angle of the refrigerant branch pipe varies from device to device, it will be necessary to conduct an experiment to determine the position of the branching projection each time. It had the problem of being efficient.
また、特許文献2の構成では、らせん板を別部品として構成しているので、らせん板を適正な位置に支持することが困難であるとともに、混合された冷媒が分岐部で壁面に衝突
することで液冷媒が壁面に付着して失速するため重力の影響を受け、下方へ多く流れ、均一に分流できないという課題を有していた。
Moreover, in the structure of patent document 2, since the spiral plate is comprised as another component, it is difficult to support a spiral plate in an appropriate position, and the mixed refrigerant | coolant collides with a wall surface in a branch part. However, since the liquid refrigerant adheres to the wall surface and is stalled, it is affected by gravity, so that the liquid refrigerant flows downward and cannot be evenly divided.
本発明は、前記従来の課題を解決するもので、熱交換器が傾斜した取り付け姿勢で冷媒分岐管の取り付け角度に依存せず均一に分流でき、かつ特殊な別部品を使用することなく簡素な構成とした冷媒分岐管を提供することを目的とする。 The present invention solves the above-mentioned conventional problems, and can be divided evenly without depending on the mounting angle of the refrigerant branch pipe in a mounting posture in which the heat exchanger is inclined, and is simple without using special separate parts. It aims at providing the refrigerant | coolant branch pipe made into the structure.
前記従来の課題を解決するために、本発明の冷媒分岐管は、冷媒が流入する曲がり管からなる入口管と、前記入口管から流入した冷媒を複数の流路へ分岐させる分岐部と、前記分岐部を介して流れる冷媒を流出させる複数の出口管とを備え、前記入口管の外周部に冷媒の流れを偏向させる堰部を備えたものである。これによって、分岐部の手前の曲がり管からなる入口管において、遠心力により外周側の内壁面を沿って流れる液相部の冷媒を堰に衝突拡散させることで、分岐部での壁面への付着を最小限にとどめ、気液混合状態で分岐部にて分流することにより、重力の影響を受けず、かつ取り付け方向、角度に依存せずに均一に分流することができるようになる。 In order to solve the conventional problem, the refrigerant branch pipe of the present invention includes an inlet pipe made of a bent pipe into which a refrigerant flows, a branch section for branching the refrigerant flowing in from the inlet pipe into a plurality of flow paths, And a plurality of outlet pipes for letting out the refrigerant flowing through the branch parts, and a dam part for deflecting the refrigerant flow at the outer peripheral part of the inlet pipe. As a result, in the inlet pipe composed of a bent pipe before the branching section, the liquid phase refrigerant flowing along the inner wall surface on the outer peripheral side is collided and diffused into the weir by centrifugal force, so that it adheres to the wall surface at the branching section. The flow is diverted to the minimum and diverted at the branching portion in the gas-liquid mixed state, so that the flow can be evenly divided without being affected by gravity and without depending on the mounting direction and angle.
また、本発明の冷媒分岐管は、堰部を入口管の外壁に外力を加えて変形させて構成、あるいは分岐部を構成する管の穴をD字型にすることで堰部を構成したものである。これによって、特殊な別部品を使用することなく堰部を構成できるので、別部品の支持方法を考慮する必要がなくなり、冷媒分岐管本体の設計製造が効率的となる。 Further, the refrigerant branch pipe of the present invention is constructed by deforming the dam section by applying external force to the outer wall of the inlet pipe, or by configuring the dam section by making the hole of the pipe constituting the branch section D-shaped. It is. As a result, the weir portion can be configured without using any special separate parts, so that it is not necessary to consider the support method of the separate parts, and the design and manufacture of the refrigerant branch pipe body becomes efficient.
本発明の冷媒分岐管は、冷媒分岐管本体の取り付け方向、角度に依存することなく、均一に分流することができる。 The refrigerant branch pipe of the present invention can evenly divert without depending on the mounting direction and angle of the refrigerant branch pipe main body.
第1の発明は冷媒が流入する曲がり管からなる入口管と、前記入口管から流入した冷媒を複数の流路へ分岐させる分岐部と、前記分岐部を介して流れる冷媒を流出させる複数の出口を有する出口管とを備え、前記入口管の外周部に冷媒の流れを偏向させる堰部を備えた構成とすることにより、分岐部の手前の曲がり管において、遠心力により外周側の内壁面を沿って流れる液相部の冷媒を堰に衝突拡散させることにより、分岐部での壁面への付着を最小限にとどめ、気液混合状態で分岐部にて分流することにより、重力の影響を受けず、かつ取り付け方向、角度に依存せずに均一に分流することができる。 The first invention is an inlet pipe composed of a bent pipe into which a refrigerant flows, a branching section for branching the refrigerant flowing in from the inlet pipe into a plurality of flow paths, and a plurality of outlets for discharging the refrigerant flowing through the branching section. And a weir portion that deflects the flow of the refrigerant at the outer peripheral portion of the inlet tube, so that the inner wall surface on the outer peripheral side is caused by centrifugal force in the bent tube before the branch portion. By colliding and diffusing the refrigerant in the liquid phase flowing along the weir to the weir, adhesion to the wall surface at the branch is minimized, and by branching in the gas-liquid mixed state at the branch, it is affected by gravity. Without being dependent on the mounting direction and angle.
第2の発明は、特に、第1の発明の堰部を入口管の外壁に外力を加えて変形させることで構成することにより、特殊な別部品を使用することなく堰部を構成でき、別部品の支持方法を考慮する必要がなくなり、冷媒分岐管本体の設計製造を効率的に行うことができる。 According to the second aspect of the invention, in particular, the dam portion of the first aspect of the invention can be configured without using a special separate part by forming the dam portion by deforming the outer wall of the inlet pipe by applying an external force. There is no need to consider the part support method, and the design and manufacture of the refrigerant branch pipe body can be performed efficiently.
第3の発明は、特に、第1の発明の堰部を、分岐部を構成する管の入口穴をD字型に形成して構成することにより、特殊な別部品を使用することなく堰部を構成でき、別部品の支持方法を考慮する必要がなくなり、冷媒分岐管本体の設計製造を効率的に行うことができる。 According to the third aspect of the invention, in particular, the dam portion of the first aspect of the invention is formed by forming the inlet hole of the pipe constituting the branch portion in a D-shape, so that the dam portion can be used without using a special separate part. Therefore, it is not necessary to consider a support method for separate parts, and the refrigerant branch pipe body can be designed and manufactured efficiently.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
(実施の形態1)
図1は、本発明の第1の実施の形態における冷媒分岐管の斜視図である。図1において
、入口管1は冷媒が流入する曲がり管であり、冷媒流れ方向Sで示した方向に冷媒が流入する。冷媒は分岐部2において、出口管3に分流され、各々の出口3a,3bより流出する。堰部4は、入口管1の曲がり管外周部1aの外壁に外力を加えて変形させることにより形成され、入口管1内の流路の一部が狭くなっている。
(Embodiment 1)
FIG. 1 is a perspective view of a refrigerant branch pipe according to the first embodiment of the present invention. In FIG. 1, the inlet pipe 1 is a bent pipe into which the refrigerant flows, and the refrigerant flows in the direction indicated by the refrigerant flow direction S. The refrigerant is diverted to the outlet pipe 3 at the branch portion 2 and flows out from the outlets 3a and 3b. The weir part 4 is formed by applying an external force to the outer wall of the bent pipe outer peripheral part 1a of the inlet pipe 1 to deform it, and a part of the flow path in the inlet pipe 1 is narrowed.
以上のように構成された冷媒分岐管について、以下その動作、作用を説明する。図2は、本発明の第1の実施の形態における冷媒分岐管の断面図である。図2において、入口管1より冷媒流れ方向Sで示した方向に気液混合状態の冷媒が流入すると、曲がり管を通過する際の遠心力により、比重の大きい液冷媒粒子5が曲がり管の外周方向に溜まり、液冷媒膜流6として曲がり管外周部1aの内壁に付着した状態で流れる。その後、液冷媒膜流6は堰部4に衝突して跳ね上げ流7となり、気液拡散冷媒8となった状態で分岐部2に至る。分岐部2では気液拡散冷媒8は微細な液冷媒粒子となって内壁面に付着することなく冷媒の流れに従って分流し、出口管3の出口3b(3a)へ流れる。 About the refrigerant | coolant branch pipe comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. FIG. 2 is a sectional view of the refrigerant branch pipe according to the first embodiment of the present invention. In FIG. 2, when the refrigerant in the gas-liquid mixed state flows from the inlet pipe 1 in the direction indicated by the refrigerant flow direction S, the liquid refrigerant particles 5 having a large specific gravity are caused by the centrifugal force when passing through the bent pipe to the outer periphery of the bent pipe. It collects in the direction and flows as a liquid refrigerant film flow 6 while adhering to the inner wall of the bent pipe outer peripheral portion 1a. Thereafter, the liquid refrigerant film flow 6 collides with the weir portion 4 to become a splash flow 7 and reaches the branching portion 2 in a state of being a gas-liquid diffusion refrigerant 8. In the branch part 2, the gas-liquid diffusion refrigerant 8 becomes fine liquid refrigerant particles and is divided according to the flow of the refrigerant without adhering to the inner wall surface, and flows to the outlet 3 b (3 a) of the outlet pipe 3.
以上のように、本実施の形態においては入口管1の曲がり管外周部1aに堰部4を備えたことにより、分岐部2での壁面への液冷媒付着を最小限にとどめ、気液混合状態で分岐部にて分流することにより、重力の影響を受けず、かつ取り付け方向、角度に依存せずに均一に分流することができる。 As described above, in the present embodiment, the bent pipe outer peripheral portion 1a of the inlet pipe 1 is provided with the weir portion 4, thereby minimizing liquid refrigerant adhesion to the wall surface at the branch portion 2 and mixing the gas and liquid. By diverting at the branching portion in the state, it is possible to uniformly divert without being influenced by gravity and without depending on the mounting direction and angle.
また、本実施の形態では堰部4を入口管1の外壁に外力を加えて変形させることにより構成したことにより、特殊な別部品を使用することなく堰部4を構成できるようになり、別部品の支持方法を考慮する必要がなくなり、冷媒分岐管本体の設計製造を効率的に行うことができる。 Further, in the present embodiment, the dam portion 4 is configured by deforming the outer wall of the inlet pipe 1 by applying an external force, so that the dam portion 4 can be configured without using a special separate part. There is no need to consider the part support method, and the design and manufacture of the refrigerant branch pipe body can be performed efficiently.
(実施の形態2)
図3は、本発明の第2の実施の形態の冷媒分岐管の分解斜視図である。図3において、入口管1は冷媒が流入する曲がり管であり、出口管3は略U字側に形成された曲がり管であり、端部が出口3a,3bを形成している。分岐部2はD字型の入口穴10により出口管3の略中央に入口管1の内周部1b側に開口するように設けられ、出口管3に溶接接合される入口管1の端部に覆われる。
(Embodiment 2)
FIG. 3 is an exploded perspective view of the refrigerant branch pipe according to the second embodiment of the present invention. In FIG. 3, the inlet pipe 1 is a bent pipe into which the refrigerant flows, the outlet pipe 3 is a bent pipe formed on the substantially U-shape, and the ends form outlets 3a and 3b. The branch portion 2 is provided at the approximate center of the outlet pipe 3 by a D-shaped inlet hole 10 so as to open to the inner peripheral portion 1b side of the inlet pipe 1, and the end portion of the inlet pipe 1 welded to the outlet pipe 3 Covered with.
図4は、本発明の第2の実施の形態の冷媒分岐管の断面図である。図4において、D字型の入口穴10により堰部4が形成されることで、本発明の第1の実施の形態の冷媒分岐管と同等の作用を得ることができ、冷媒分岐管本体の製造を効率的に行うことができる。 FIG. 4 is a cross-sectional view of the refrigerant branch pipe according to the second embodiment of the present invention. In FIG. 4, the weir portion 4 is formed by the D-shaped inlet hole 10, so that an action equivalent to that of the refrigerant branch pipe of the first embodiment of the present invention can be obtained. Manufacturing can be performed efficiently.
以上のように、本発明にかかる冷媒分岐管は、簡素な構成で取り付け姿勢に依存しない冷媒分流が可能となるので、熱交換器を傾斜させて取り付ける様々な冷凍空調機器の高効率化の用途に適用できる。 As described above, the refrigerant branch pipe according to the present invention enables a refrigerant branch flow that does not depend on the mounting posture with a simple configuration. Applicable to.
1 入口管
1a 曲がり管外周部
2 分岐部
3 出口管
3a,3b 出口
4 堰部
10 入口穴
DESCRIPTION OF SYMBOLS 1 Inlet pipe 1a Bending pipe | tube outer peripheral part 2 Branch part 3 Outlet pipe 3a, 3b Outlet 4 Weir part 10 Inlet hole
Claims (3)
The refrigerant branch pipe according to claim 1, wherein the inlet pipe is formed by forming the inlet hole in a D-shape in the refrigerant branch pipe joined so as to cover the inlet hole of the pipe constituting the branch portion.
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JP2005237164A JP2007051823A (en) | 2005-08-18 | 2005-08-18 | Refrigerant branch pipe |
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JP2005237164A JP2007051823A (en) | 2005-08-18 | 2005-08-18 | Refrigerant branch pipe |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012241977A (en) * | 2011-05-19 | 2012-12-10 | Hitachi Appliances Inc | Refrigerant distributor, and refrigeration cycle device using the same |
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2005
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012241977A (en) * | 2011-05-19 | 2012-12-10 | Hitachi Appliances Inc | Refrigerant distributor, and refrigeration cycle device using the same |
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