JP2008101788A - Piping joint for refrigerating cycle - Google Patents
Piping joint for refrigerating cycle Download PDFInfo
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- JP2008101788A JP2008101788A JP2006282297A JP2006282297A JP2008101788A JP 2008101788 A JP2008101788 A JP 2008101788A JP 2006282297 A JP2006282297 A JP 2006282297A JP 2006282297 A JP2006282297 A JP 2006282297A JP 2008101788 A JP2008101788 A JP 2008101788A
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Abstract
Description
この発明は、冷凍サイクルの配管用継手に関し、さらに詳しくは、圧縮機、ガスクーラ、エバポレータ、減圧器、気液分離器およびガスクーラから出てきた冷媒とエバポレータから出てきた冷媒とを熱交換させる中間熱交換器が配管により接続されており、かつたとえばＣＯ２（二酸化炭素）などの超臨界冷媒が用いられる超臨界冷凍サイクルにおいて、配管用パイプと各種機器との接続、および／または配管用パイプどうしの接続に好適に使用される配管用継手に関する。 The present invention relates to a piping joint for a refrigeration cycle. More specifically, the present invention relates to a compressor, a gas cooler, an evaporator, a decompressor, a gas-liquid separator, and an intermediate for heat exchange between a refrigerant coming out of the gas cooler and a refrigerant coming out of the evaporator. In a supercritical refrigeration cycle in which a heat exchanger is connected by piping and a supercritical refrigerant such as CO 2 (carbon dioxide) is used, connection between piping pipes and various devices and / or piping pipes It is related with the coupling for piping used suitably for connection.
この明細書および特許請求の範囲において、「超臨界冷凍サイクル」とは、高圧側において、冷媒が臨界圧力を超えた超臨界状態となる冷凍サイクルを意味するものとし、「超臨界冷媒」とは、超臨界冷凍サイクルに用いられる冷媒を意味するものとする。 In this specification and claims, the term “supercritical refrigeration cycle” means a refrigeration cycle in which the refrigerant is in a supercritical state exceeding the critical pressure on the high pressure side, and “supercritical refrigerant” It shall mean a refrigerant used in a supercritical refrigeration cycle.
従来、たとえば超臨界冷凍サイクルにおける配管用パイプと各種機器との接続、および／または配管用パイプどうしの接続に用いられる配管用継手として、円筒状の嵌合凸部を有する雄側継手部材と、雄側継手部材の嵌合凸部の全体が嵌る嵌合凹部を有する雌側継手部材と、嵌合凸部の外周面に装着されて嵌合凸部と嵌合凹部との間を密封するシールリングとを備えたもの用いられている（特許文献１参照）。 Conventionally, for example, a male joint member having a cylindrical fitting convex portion as a pipe joint used for connection between pipes and various devices in a supercritical refrigeration cycle and / or connection between pipes; A female joint member having a fitting recess into which the entire fitting projection of the male joint member fits, and a seal that is mounted on the outer peripheral surface of the fitting projection and seals between the fitting projection and the fitting recess. A thing provided with a ring is used (refer to patent documents 1).
しかしながら、特許文献１記載の配管用継手の場合、必要なシール性を得るためには、嵌合凸部におけるシールリングよりも基端側の部分を、所要長さ以上にする必要がある。すなわち、両継手部材の凹凸嵌合している凸側部分におけるシールリングよりも嵌合凸部基端側の部分を、所要長さ以上にする必要がある。しかしながら、この場合、嵌合凸部の雄側継手部材表面からの突出長さを比較的長くしなければならず、冷凍サイクルを有する車両において配管用パイプどうしを固定する際の作業性が悪いという問題がある。しかも、嵌合凸部の雄側継手部材表面からの突出長さが長くなると、両継手部材の凹凸嵌合している凹側部分である雌側継手部材表面から嵌合凹部の底までの深さも深くしなければならず、その結果雌側継手部材全体の厚みが大きくなって重量が大きくなるという問題がある。 However, in the case of the joint for piping described in Patent Document 1, in order to obtain a necessary sealing property, it is necessary to make the portion on the base end side with respect to the seal ring in the fitting convex portion longer than the required length. That is, it is necessary to make the portion of the fitting convex base side closer to the required length than the seal ring in the convex portion where the concave and convex portions of both joint members are fitted. However, in this case, the protrusion length of the fitting convex portion from the surface of the male joint member must be relatively long, and workability when fixing pipes for piping in a vehicle having a refrigeration cycle is poor. There's a problem. In addition, when the protruding length of the fitting convex portion from the male joint member surface becomes long, the depth from the female joint member surface, which is the concave side portion where both concave and convex fitting portions of both joint members fit, to the bottom of the fitting concave portion. There is a problem that the thickness of the entire female joint member is increased and the weight is increased.
特に、超臨界冷媒は作動圧力が高いので、超臨界冷凍サイクルに用いられる配管継手においては、特許文献１に記載されているように、嵌合凸部におけるシールリングよりも基端部側にバックアップリングを装着する必要があり、その結果雄側継手部材の嵌合凸部の長さが一層長くなって、上述した問題が顕著になる。
この発明の目的は、上記問題を解決し、配管用パイプどうしを固定する際の作業性が向上するとともに、軽量化を図ることができる冷凍サイクルの配管用継手を提供することにある。 An object of the present invention is to provide a piping joint for a refrigeration cycle that solves the above-described problems, improves workability when fixing pipes for piping, and can reduce the weight.
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)円筒状の嵌合凸部を有する雄側継手部材と、雄側継手部材の嵌合凸部が嵌る嵌合凹部を有する雌側継手部材と、嵌合凸部の外周面に装着されて嵌合凸部と嵌合凹部との間を密封するシールリングとを備えた冷凍サイクルの配管用継手であって、
雄側継手部材の雌側継手部材側を向いた面における嵌合凸部の周囲に環状溝が形成され、雌側継手部材の雄側継手部材側を向いた面における嵌合凹部の周囲に、雄側継手部材側に突出しかつ雄側継手部材の環状溝内に嵌め入れられる筒状部が設けられている冷凍サイクルの配管用継手。
1) A male joint member having a cylindrical fitting convex part, a female joint member having a fitting concave part into which the fitting convex part of the male joint member fits, and an outer peripheral surface of the fitting convex part. A joint for piping of a refrigeration cycle comprising a seal ring that seals between a fitting convex part and a fitting concave part,
An annular groove is formed around the fitting convex portion on the surface facing the female joint member side of the male joint member, and around the fitting concave portion on the surface facing the male joint member side of the female joint member, A pipe joint for a refrigeration cycle provided with a cylindrical portion that protrudes toward the male joint member and is fitted into an annular groove of the male joint member.
2)雄側継手部材の環状溝の深さが、雌側継手部材の筒状部の長さ以上となっている上記1)記載の冷凍サイクルの配管用継手。 2) The piping joint for a refrigeration cycle according to 1) above, wherein the depth of the annular groove of the male joint member is equal to or greater than the length of the tubular portion of the female joint member.
3)雌側継手部材の筒状部における内周面の先端部に、先端に向かって拡径されたテーパ部が形成されている上記1)または2)記載の冷凍サイクルの配管用継手。 3) A pipe joint for a refrigeration cycle according to the above 1) or 2), wherein a taper part having a diameter increased toward the tip is formed at the tip of the inner peripheral surface of the cylindrical part of the female joint member.
4)雄側継手部材の嵌合凸部の外周面に、環状のシールリング装着溝が全周にわたって形成され、シールリング装着溝内にシールリングが配置されている上記1)〜3)のうちのいずれかに記載の冷凍サイクルの配管用継手。 4) Among the above 1) to 3), an annular seal ring mounting groove is formed over the entire circumference on the outer peripheral surface of the fitting convex portion of the male joint member, and the seal ring is disposed in the seal ring mounting groove. The joint for piping of the refrigerating cycle in any one of.
5)雄側継手部材の嵌合凸部の外周面に、複数のシールリング装着溝が嵌合凸部の長さ方向に間隔をおいて形成され、各シールリング装着溝内にシールリングが配置されている上記4)記載の冷凍サイクルの配管用継手。 5) A plurality of seal ring mounting grooves are formed on the outer peripheral surface of the fitting convex portion of the male joint member at intervals in the length direction of the fitting convex portion, and the seal ring is disposed in each sealing ring mounting groove. The piping joint for a refrigeration cycle according to 4) above.
6)シールリング装着溝内のシールリングよりも嵌合凸部の基端側の部分に、バックアップリングが配置されている上記4)または5)記載の冷凍サイクルの配管用継手。 6) The piping joint for a refrigeration cycle according to the above 4) or 5), wherein a backup ring is arranged at the base end side of the fitting convex portion with respect to the seal ring in the seal ring mounting groove.
7)雄側継手部材に冷媒流路が形成されており、雄型継手部材の嵌合凸部の内部が冷媒流路に通じている上記1)〜6)のうちのいずれかに記載の冷凍サイクルの配管用継手。 7) The refrigeration according to any one of 1) to 6) above, wherein a refrigerant flow path is formed in the male joint member, and an inside of the fitting convex portion of the male joint member communicates with the refrigerant flow path. Fitting for cycle piping.
8)嵌合凸部が、雄側継手部材に貫通させられた配管用パイプの先端部からなる上記1)〜6)のうちのいずれかに記載の冷凍サイクルの配管用継手。 8) The piping joint for a refrigeration cycle according to any one of 1) to 6) above, wherein the fitting convex portion is a tip portion of a piping pipe penetrated by the male joint member.
9)雄側継手部材に貫通穴が形成されるとともに、貫通穴における配管用パイプの先端側の部分に段部を介して大径部が形成され、貫通穴に配管用パイプが通されるとともに、配管用パイプに段部に係合する環状ビードが形成され、貫通穴の大径部の内周面と配管用パイプにおける環状ビードよりも先端側の部分の外周面との間に環状溝が形成されている上記8)記載の冷凍サイクルの配管用継手。 9) A through-hole is formed in the male joint member, a large-diameter portion is formed through a step portion at a tip side of the pipe for piping in the through-hole, and the piping pipe is passed through the through-hole. An annular bead that engages with the step portion is formed in the pipe for piping, and an annular groove is formed between the inner peripheral surface of the large-diameter portion of the through hole and the outer peripheral surface of the portion on the tip side of the annular bead in the pipe for piping. The joint for piping of the refrigeration cycle according to the above 8), which is formed.
10)雄側継手部材の貫通穴における大径部を除いた小径部の内周面に、環状凹所が全周にわたって形成され、配管用パイプの一部分が拡管されて環状凹所内に圧入されている上記9)記載の冷凍サイクルの配管用継手。
11)雌側継手部材に冷媒流路が形成されており、雌型継手部材の嵌合凹部が冷媒流路に通じている上記1)〜10)のうちのいずれかに記載の冷凍サイクルの配管用継手。
10) An annular recess is formed on the inner peripheral surface of the small diameter portion excluding the large diameter portion in the through hole of the male joint member, and a part of the pipe for pipe is expanded and press-fitted into the annular recess. The joint for piping of the refrigeration cycle as described in 9) above.
11) Refrigerating cycle piping according to any one of 1) to 10) above, wherein a refrigerant flow path is formed in the female joint member, and a fitting recess of the female joint member communicates with the refrigerant flow path. Fittings.
12)圧縮機、ガスクーラ、エバポレータ、減圧器、気液分離器およびガスクーラから出てきた冷媒とエバポレータから出てきた冷媒とを熱交換させる中間熱交換器が配管により接続されており、かつ超臨界冷媒を用いる冷凍サイクルであって、配管用パイプと各種機器、および／または配管用パイプどうしが、上記1)〜11)のうちのいずれかに記載された配管用継手により接続されている超臨界冷凍サイクル。 12) An intermediate heat exchanger that exchanges heat between the refrigerant coming out of the compressor, gas cooler, evaporator, decompressor, gas-liquid separator and gas cooler and refrigerant coming out of the evaporator is connected by piping, and is supercritical Supercritical, which is a refrigeration cycle using a refrigerant, wherein pipes and various devices and / or pipes are connected by a pipe joint described in any one of 1) to 11) above Refrigeration cycle.
上記1)の配管用継手によれば、雄側継手部材の雌側継手部材側を向いた面における嵌合凸部の周囲に環状溝が形成され、雌側継手部材の雄側継手部材側を向いた面における嵌合凹部の周囲に、雄側継手部材側に突出しかつ雄側継手部材の環状溝内に嵌め入れられる筒状部が設けられているので、雄側継手部材における環状溝よりも内側の筒状部分、および雌側継手部材における筒状部内側の穴部分が、両継手部材の凹凸嵌合に寄与し、雄側継手部材の嵌合凸部および筒状部分が凹凸嵌合の凸側部分となり、雌側継手部材の嵌合凹部および筒状部内の穴部分が凹側部分となる。したがって、両継手部材の凹凸嵌合をしている凸側部分および凹側部分の長さを比較的長くすることができ、嵌合凸部の雄側継手部材表面からの突出長さを特許文献１記載の配管用継手よりも短くしたとしても、両継手部材の凹凸嵌合している凸側部分におけるシールリングよりも基端側（環状溝底側）の部分を、所要長さ以上にすることが可能になって、両継手部材間の必要なシール性を得ることができる。その結果、冷凍サイクルを有する車両において配管用パイプどうしを固定する際の作業性が向上する。しかも、雌側継手部材には筒状部を形成するだけで、両継手部材の凹凸嵌合をしている凸側部分および凹側部分の長さを長くすることができるので、雌側継手部材の表面から嵌合凹部の底までの深さを比較的浅くすることができ、その結果雌側継手部材全体の厚みを大きくすることが不要になって軽量化を図ることができる。 According to the pipe joint of 1) above, an annular groove is formed around the fitting convex portion on the surface of the male joint member facing the female joint member, and the male joint member side of the female joint member is Around the fitting recess on the facing surface, there is provided a cylindrical portion that protrudes toward the male joint member and is fitted into the annular groove of the male joint member. The inner cylindrical part and the hole part inside the cylindrical part of the female side joint member contribute to the concave and convex fitting of both joint members, and the fitting convex part and the cylindrical part of the male side joint member are concave and convex fitting. It becomes a convex side part, and the fitting concave part of the female side joint member and the hole part in the cylindrical part become the concave side part. Therefore, the lengths of the convex side portion and the concave side portion that have the concave and convex fitting of both joint members can be made relatively long, and the protruding length of the fitting convex portion from the male side joint member surface is disclosed in Patent Literature Even if it is shorter than the joint for piping according to 1, the portion on the base end side (annular groove bottom side) with respect to the seal ring in the convex side portion where the concave and convex portions of both joint members are fitted is made longer than the required length. This makes it possible to obtain the necessary sealing performance between the joint members. As a result, workability when fixing pipes for piping in a vehicle having a refrigeration cycle is improved. In addition, the length of the convex portion and the concave portion where the concave and convex fitting of both the joint members can be increased only by forming the cylindrical portion in the female side joint member. The depth from the surface to the bottom of the fitting recess can be made relatively shallow. As a result, it is not necessary to increase the thickness of the entire female joint member, and the weight can be reduced.
さらに、雄側継手部材の嵌合凸部と雌側継手部材の嵌合凹部の中心線どうしの偏心を抑制することができる。 Furthermore, the eccentricity of the center line of the fitting convex part of a male side coupling member and the fitting concave part of a female side joint member can be suppressed.
上記3)の配管用継手によれば、雄側継手部材のシールリングを装着した嵌合凸部および筒状部分を、比較的簡単に雌側継手部材の筒状部の穴部分および嵌合凹部内に嵌め入れることができる。 According to the piping joint of 3) above, the fitting convex part and the cylindrical part fitted with the seal ring of the male joint member can be relatively easily compared with the hole part and fitting concave part of the cylindrical part of the female joint member. Can be fitted inside.
上記5)の配管用継手によれば、両継手部材間のシール性が一層優れたものになる。また、雄側継手部材の嵌合凸部の外周面に、複数のシールリング装着溝が嵌合凸部の長さ方向に間隔をおいて形成され、各シールリング装着溝内にシールリングが配置されている場合、特許文献１記載の配管用継手によれば、嵌合凸部の雄側継手部材表面からの突出長さが一層長くなるとともに、雌側継手部材の重量が一層大きくなるが、この場合であっても、上記1)の配管用継手のように構成されていると、嵌合凸部の雄側継手部材表面からの突出長さを比較的短くすることができるとともに、雌側継手部材の重量を比較的軽くすることができる。 According to the joint for piping of 5) above, the sealing performance between both joint members is further improved. In addition, a plurality of seal ring mounting grooves are formed on the outer peripheral surface of the fitting convex portion of the male joint member at intervals in the length direction of the fitting convex portion, and a seal ring is disposed in each sealing ring mounting groove. If it is, according to the joint for piping described in Patent Document 1, the protruding length of the fitting convex portion from the male joint member surface is further increased, and the weight of the female joint member is further increased. Even in this case, when configured like the pipe joint of 1) above, the protruding length of the fitting convex portion from the male joint member surface can be made relatively short, and the female side The weight of the joint member can be made relatively light.
上記6)の配管用継手によれば、シールリングがシールリング装着溝内からはみ出すことに起因するシールリングの部分的な破損を防止することができる。 According to the pipe joint of 6) above, partial damage of the seal ring due to the seal ring protruding from the seal ring mounting groove can be prevented.
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、この発明による配管用継手を、超臨界冷凍サイクルの配管用パイプどうしの接続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 pipe joint according to the present invention is applied to connection between pipes of a supercritical refrigeration cycle.
なお、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。また、以下の説明において、図２〜図７の上下、左右を上下、左右というものとする。 In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum. In the following description, the top and bottom and the left and right in FIGS.
実施形態１
この実施形態は図１〜図３に示すものである。
Embodiment 1
This embodiment is shown in FIGS.
図１は超臨界冷凍サイクルを示し、図２および図３は配管用継手の全体構成を示し、図４はその要部の構成を示す。 FIG. 1 shows a supercritical refrigeration cycle, FIGS. 2 and 3 show the overall configuration of a joint for piping, and FIG. 4 shows the configuration of the main part thereof.
図１において、超臨界冷凍サイクルは、たとえばＣＯ２（二酸化炭素）などの超臨界冷媒が用いられるものであって、圧縮機(1)、ガスクーラ(2)、エバポレータ(3)、気液分離器としてのアキュムレータ(4)、減圧器としての膨張弁(5)、およびガスクーラ(2)から出てきた冷媒とエバポレータ(3)から出てアキュムレータ(4)を通過してきた冷媒とを熱交換させる中間熱交換器(6)が、配管(7)により接続されたものであり、配管(7)を構成する配管用パイプと超臨界冷凍サイクル用各種機器、および／または配管用パイプどうしが、配管用継手により接続されている。ここで、超臨界冷凍サイクル用各種機器とは、圧縮機(1)、ガスクーラ(2)、エバポレータ(3)、アキュムレータ(4)、膨張弁(5)および中間熱交換器(6)である。この超臨界冷凍サイクルは、たとえばカーエアコンとして自動車などの車両に搭載される。なお、超臨界冷媒としては、ＣＯ２に代えて、エチレン、エタン、酸化窒素なども使用可能である。 In FIG. 1, the supercritical refrigeration cycle uses a supercritical refrigerant such as CO 2 (carbon dioxide), and includes a compressor (1), a gas cooler (2), an evaporator (3), and a gas-liquid separator. As an accumulator (4), an expansion valve (5) as a pressure reducer, and an intermediate for heat exchange between the refrigerant coming out of the gas cooler (2) and the refrigerant coming out of the evaporator (3) and passing through the accumulator (4) The heat exchanger (6) is connected by the pipe (7), and the pipe for composing the pipe (7) and various devices for the supercritical refrigeration cycle and / or the pipes for piping are used for the pipe. Connected by a joint. Here, the various devices for the supercritical refrigeration cycle are a compressor (1), a gas cooler (2), an evaporator (3), an accumulator (4), an expansion valve (5), and an intermediate heat exchanger (6). This supercritical refrigeration cycle is mounted on a vehicle such as an automobile as a car air conditioner, for example. As the supercritical refrigerant, ethylene, ethane, nitric oxide, or the like can be used instead of CO 2 .
図２および図３において、配管用パイプ(P1)(P2)どうしを接続する配管用継手(10)は、円筒状の嵌合凸部(12)を有する雄側継手部材(11)と、内周面が円筒面となされかつ雄側継手部材(11)の嵌合凸部(12)が嵌る嵌合凹部(14)を有する雌側継手部材(13)と、雄側継手部材(11)の嵌合凸部(12)の外周面および雌側継手部材(13)の嵌合凹部(14)の内周面の間をシールするシールリング(15)とを備えている。 2 and 3, the pipe joint (10) for connecting the pipes (P1) and (P2) to each other includes a male joint member (11) having a cylindrical fitting projection (12) and an inner joint member (11). A female joint member (13) having a fitting concave portion (14) in which a peripheral surface is a cylindrical surface and a fitting convex portion (12) of the male joint member (11) is fitted; and a male joint member (11) A seal ring (15) is provided for sealing between the outer peripheral surface of the fitting convex portion (12) and the inner peripheral surface of the fitting concave portion (14) of the female joint member (13).
雄側継手部材(11)は金属、ここではアルミニウムから形成された上下方向に長いブロック状であり、その一端部（下端部）に左右方向にのびかつ内周面が円筒面である貫通状の冷媒流路(16)が形成されている。雄側継手部材(11)の左右両側面は平坦面となっており、嵌合凸部(12)は、雄側継手部材(11)の右側面（雌側継手部材(13)側を向いた面）における冷媒流路(16)の右端開口の周囲の部分に右方突出状に一体に形成されている。冷媒流路(16)は嵌合凸部(12)の先端面まで延びている。また、雄側継手部材(11)の冷媒流路(16)内の左端部に、金属製、ここではアルミニウム製配管用パイプ(P1)の端部が挿入され、雄側継手部材(11)に接合されている。雄側継手部材(11)の他端部（上端部）に、左右方向にのびる貫通穴(17)が形成されている。 The male joint member (11) is formed of a metal, here aluminum, in the form of a block that is long in the vertical direction and extends in the left-right direction at one end (lower end) and has a cylindrical shape on the inner peripheral surface. A refrigerant channel (16) is formed. The left and right side surfaces of the male joint member (11) are flat surfaces, and the fitting projection (12) faces the right side surface of the male joint member (11) (female side joint member (13) side). Is formed integrally with the right side opening of the refrigerant flow path (16) on the surface). The refrigerant flow path (16) extends to the front end surface of the fitting convex part (12). In addition, the end of the pipe (P1) made of metal, here aluminum, is inserted into the left end of the refrigerant flow path (16) of the male joint member (11), and the male joint member (11) It is joined. A through hole (17) extending in the left-right direction is formed at the other end (upper end) of the male joint member (11).
雄側継手部材(11)の右側面における嵌合凸部(12)の周囲に、右方から見て円形の環状溝(18)が形成されている。環状溝(18)の径方向内側の側面（内周面）は円筒面であり、当該円筒面の直径は、嵌合凸部(12)の外径と等しくなっている。したがって、雄側継手部材(11)における環状溝(18)よりも内側部分、すなわち環状溝(18)と冷媒流路(16)との間の部分に、嵌合凸部(12)に連なった円筒状部分(19)が形成されている。 A circular annular groove (18) is formed around the fitting convex portion (12) on the right side surface of the male joint member (11) as viewed from the right. The radially inner side surface (inner peripheral surface) of the annular groove (18) is a cylindrical surface, and the diameter of the cylindrical surface is equal to the outer diameter of the fitting convex portion (12). Accordingly, the male joint member (11) is connected to the fitting convex portion (12) in the inner portion of the annular groove (18), that is, the portion between the annular groove (18) and the refrigerant flow path (16). A cylindrical portion (19) is formed.
雄側継手部材(11)の嵌合凸部(12)の外周面に、環状の１つのシールリング装着溝(21)が全周にわたって形成されている。当然のことながら、シールリング装着溝(21)は環状溝(18)よりも外側に存在している。シールリング装着溝(21)内に、断面円形のシールリング(15)と、バックアップリング(22)とが、シールリング(15)が嵌合凸部(12)の先端側（右端側）に来るように配置されている。シールリング(15)は、たとえばＨＮＢＲ、ＮＢＲなどにより形成されている。 An annular seal ring mounting groove (21) is formed over the entire circumference on the outer peripheral surface of the fitting convex portion (12) of the male joint member (11). As a matter of course, the seal ring mounting groove (21) exists outside the annular groove (18). In the seal ring mounting groove (21), the seal ring (15) with a circular cross section and the backup ring (22) are located on the tip side (right end side) of the fitting projection (12). Are arranged as follows. The seal ring (15) is made of, for example, HNBR, NBR or the like.
雌側継手部材(13)は金属、ここではアルミニウムから形成された上下方向に長いブロック状であり、その一端部（下端部）に左右方向にのびる貫通状の冷媒流路(23)が、雄側継手部材(11)の冷媒流路(16)と合致するように形成されている。雌側継手部材(13)の左右両側面は平坦面となっており、嵌合凹部(14)は、雌側継手部材(13)の左側面（雄側継手部材(11)を向いた面）に開口するように形成されている。冷媒流路(23)の左端は嵌合凹部(14)の底面に開口している。また、雌側継手部材(13)の冷媒流路(23)の右端部に、金属製、ここではアルミニウム製配管用パイプ(P2)の端部が挿入され、雌側継手部材(13)に接合されている。雌側継手部材(13)の他端部（上端部）に、左右方向にのびる貫通状のめねじ穴(24)が、雄側継手部材(11)の貫通穴(17)と合致するように形成されている。 The female joint member (13) is formed of a metal, here aluminum, and has a vertically long block shape, and a penetrating refrigerant channel (23) extending in the left-right direction at one end portion (lower end portion) of the female joint member (13). The side joint member (11) is formed so as to coincide with the refrigerant flow path (16). The left and right sides of the female joint member (13) are flat, and the fitting recess (14) is the left side of the female joint member (13) (the surface facing the male joint member (11)). It is formed to open. The left end of the refrigerant channel (23) is open to the bottom surface of the fitting recess (14). In addition, the end of the pipe (P2) made of metal, here aluminum, is inserted into the right end of the refrigerant flow path (23) of the female joint member (13) and joined to the female joint member (13). Has been. In the other end (upper end) of the female joint member (13), the penetrating female screw hole (24) extending in the left-right direction is aligned with the through hole (17) of the male joint member (11). Is formed.
雌側継手部材(13)の左側面における嵌合凹部(14)の周囲に、雄側継手部材(11)の環状溝(18)内に嵌め入れられる円筒状部(25)が、左方突出状に一体に形成されている。円筒状部(25)の内径は嵌合凹部(14)の内径と等しくなっている。したがって、雌側継手部材(13)の円筒状部(25)の内側は、雄側継手部材(11)の円筒状部分(19)が嵌る穴部分(26)となっている。また、円筒状部(25)の内周面の左端部に、先端に向かって拡径されたテーパ部(25a)が形成されている。 A cylindrical part (25) fitted into the annular groove (18) of the male joint member (11) protrudes to the left around the fitting recess (14) on the left side surface of the female joint member (13). Are integrally formed. The inner diameter of the cylindrical portion (25) is equal to the inner diameter of the fitting recess (14). Therefore, the inside of the cylindrical part (25) of the female side joint member (13) is a hole part (26) into which the cylindrical part (19) of the male side joint member (11) is fitted. In addition, a tapered portion (25a) whose diameter is increased toward the tip is formed at the left end portion of the inner peripheral surface of the cylindrical portion (25).
雄側継手部材(11)と雌側継手部材(13)とは、雄側継手部材(11)の嵌合凸部(12)が雌側継手部材(13)の嵌合凹部(14)内に嵌め入れられるとともに、円筒状部分(19)が穴部分(26)内に嵌め入れられ、さらに雌側継手部材(13)の円筒状部(25)が雄側継手部材(11)の環状溝(18)内に嵌め入れられることにより、凹凸嵌合させられた状態で、雄側継手部材(11)の貫通穴(17)に通されたボルト(27)を雌側継手部材(13)のめねじ穴(24)にねじ嵌めることによって相互に連結されて配管用継手(10)が形成されており、これにより両配管用パイプ(P1)(P2)が配管用継手(10)を介して接続されている。そして、雄側継手部材(11)の嵌合凸部(12)および円筒状部分(19)が凹凸嵌合の凸側部分(28)となり、雌側継手部材(13)の嵌合凹部(14)および円筒状部(25)内の穴部分(26)が凹側部分(29)となっている。 The male joint member (11) and the female joint member (13) are configured so that the fitting convex part (12) of the male joint member (11) is in the fitting concave part (14) of the female joint member (13). The cylindrical portion (19) is fitted into the hole portion (26) and the cylindrical portion (25) of the female side joint member (13) is inserted into the annular groove ( 18) The bolt (27) passed through the through hole (17) of the male joint member (11) in the state of being fitted into the concave and convex portions by being inserted into the female joint member (13). Piping joints (10) are formed by being connected to each other by screwing into the screw holes (24), so that both pipes (P1) (P2) are connected via the pipe joints (10). Has been. Then, the fitting convex part (12) and the cylindrical part (19) of the male joint member (11) become the convex part (28) of the concave-convex fitting, and the fitting concave part (14 of the female joint member (13)) ) And the hole portion (26) in the cylindrical portion (25) is a concave portion (29).
上述した配管用継手(10)において、雄側継手部材(11)の円筒状部分(19)、および雌側継手部材(13)の穴部分(26)が、両継手部材(11)(13)の凹凸嵌合に寄与し、雄側継手部材(11)の嵌合凸部(12)および円筒状部分(19)が凹凸嵌合の凸側部分(28)となり、雌側継手部材(13)の嵌合凹部(14)および円筒状部(25)内の穴部分(26)が凹側部分(29)となっているので、両継手部材(11)(13)の凹凸嵌合をしている凸側部分(28)および凹側部分(29)の長さを比較的長くすることができ、嵌合凸部(12)の雄側継手部材(11)表面からの突出長さを比較的短くしたとしても、両継手部材(11)(13)の凸側部分(28)におけるシールリング(15)よりも基端側（環状溝(18)底側）の部分を、所要長さ以上にすることが可能になって、両継手部材(11)(13)間の必要なシール性を得ることができる。その結果、冷凍サイクルを有する車両において配管用パイプ(P1)(P2)どうしを固定する際の作業性が向上する。しかも、雌側継手部材(13)には円筒状部(25)を形成するだけで、両継手部材(11)(13)の凹凸嵌合をしている凹側部分(29)の長さを長くすることができるので、雌側継手部材(13)の厚みを比較的薄くすることができ、その結果雌側継手部材(13)全体の厚みを大きくすることが不要になって軽量化を図ることができる。円筒状部(25)が形成されていない場合、図２に鎖線で示すように、雌側継手部材(13)の厚みを大きくしなければならず、重量増となる。 In the pipe joint (10) described above, the cylindrical part (19) of the male side joint member (11) and the hole part (26) of the female side joint member (13) are both joint members (11) (13). The fitting convex part (12) and the cylindrical part (19) of the male joint member (11) become the convex part (28) of the concave and convex fitting, contributing to the concave and convex fitting of the female side joint member (13). The fitting recess (14) and the hole portion (26) in the cylindrical portion (25) are the concave portion (29). The length of the convex side portion (28) and the concave side portion (29) can be made relatively long, and the protruding length of the fitting convex portion (12) from the surface of the male joint member (11) can be made relatively long. Even if shortened, the part on the base end side (annular groove (18) bottom side) of the seal ring (15) in the convex part (28) of both joint members (11) (13) exceeds the required length. This makes it possible to obtain the necessary sealing performance between the joint members (11) and (13). As a result, workability when fixing the pipes for piping (P1) (P2) in a vehicle having a refrigeration cycle is improved. In addition, the length of the concave side portion (29) in which the concave and convex fitting of both joint members (11) and (13) is made by simply forming the cylindrical portion (25) in the female side joint member (13). Since it can be made longer, the female joint member (13) can be made relatively thin. As a result, it is not necessary to increase the overall thickness of the female joint member (13), thereby reducing the weight. be able to. When the cylindrical portion (25) is not formed, the thickness of the female joint member (13) must be increased as shown by the chain line in FIG. 2, resulting in an increase in weight.
実施形態２
この実施形態は図４および図５に示すものである。
This embodiment is shown in FIG. 4 and FIG.
実施形態２の配管用継手(30)の場合、雄側継手部材(11)の嵌合凸部(12)の外周面に、複数、ここでは２つの環状のシールリング装着溝(21)が、嵌合凸部(12)の長さ方向に間隔をおいて全周にわたって形成されている。全シールリング装着溝(21)は環状溝(18)よりも外側に存在している。拡シールリング装着溝(21)内に、断面円形のシールリング(15)と、バックアップリング(22)とが、シールリング(15)が嵌合凸部(12)の先端側（右端側）に来るように配置されている。この場合、雄側継手部材(11)の嵌合凸部(12)の長さ、および雌側継手部材(13)の嵌合凹部(14)の深さは、それぞれ実施形態１の配管用継手(10)よりも大きくなる。 In the case of the piping joint (30) of the second embodiment, a plurality of, here two, annular seal ring mounting grooves (21) are provided on the outer peripheral surface of the fitting convex portion (12) of the male joint member (11). The fitting convex portion (12) is formed over the entire circumference at intervals in the length direction. All the seal ring mounting grooves (21) exist outside the annular groove (18). In the expanded seal ring mounting groove (21), the seal ring (15) with a circular cross section and the backup ring (22) are located on the tip side (right end side) of the fitting projection (12). Arranged to come. In this case, the length of the fitting convex portion (12) of the male side joint member (11) and the depth of the fitting concave portion (14) of the female side joint member (13) are respectively the piping joint of the first embodiment. It becomes larger than (10).
その他の構成は、実施形態１の配管用継手(10)と同じであり、同一物および同一部分には同一符号を付す。 Other configurations are the same as those of the pipe joint (10) of the first embodiment, and the same components and the same parts are denoted by the same reference numerals.
実施形態３
この実施形態は図６〜図８に示すものである。
This embodiment is shown in FIGS.
実施形態３の配管用継手(40)の場合、雄側継手部材(41)の下端部に左右方向に伸びる横断面円形貫通穴(42)が形成され、この貫通穴(42)に左側から配管用パイプ(P3)が通されるとともに配管用パイプ(P3)の右端部が雄側継手部材(41)よりも右方に突出させられている。そして、配管用パイプ(P3)の雄側継手部材(41)から右方に突出した先端部が、雌側継手部材(13)の嵌合凹部(14)内に嵌る嵌合凸部(43)となっている。嵌合凸部(43)の外周面に、環状のシールリング装着溝(21)が全周にわたって形成されており、シールリング装着溝(21)内に、断面円形のシールリング(15)と、バックアップリング(22)とが、シールリング(15)が嵌合凸部(12)の先端側（右端側）に来るように配置されている。なお、実施形態３において、実施形態２の場合と同様に、嵌合凸部(43)の外周面に複数のシールリング装着溝(21)が全周にわたって形成されていてもよい。
In the case of the pipe joint (40) of
雄側継手部材(41)の貫通穴(42)の右端部に、段部(44)を介して大径部(45)が形成され、配管用パイプ(P3)に、右側から段部(44)に係合する環状ビード(46)が形成されている。そして、貫通穴(42)の大径部(45)の内周面と配管用パイプ(P3)における環状ビード(46)よりも右端側の部分の外周面との間に、雌側継手部材(13)の円筒状部(25)が嵌め入れられる環状溝(47)が形成されている。また、配管用パイプ(P3)における大径部(45)内に存在する部分に、嵌合凸部(43)に連なり、かつ雌側継手部材(13)の穴部分(26)内に嵌め入れられる円筒状部分(48)が形成されている。ここで、雄側継手部材(41)の円筒状部分(48)、および雌側継手部材(13)の穴部分(26)が、両継手部材(41)(13)の凹凸嵌合に寄与し、雄側継手部材(41)の嵌合凸部(43)および円筒状部分(48)が凹凸嵌合の凸側部分(49)となり、雌側継手部材(13)の嵌合凹部(14)および円筒状部(25)内の穴部分(26)が凹側部分(29)となっている。 A large-diameter portion (45) is formed at the right end of the through hole (42) of the male joint member (41) via a step portion (44), and the pipe portion (P3) has a step portion (44 ) Is formed. And, between the inner peripheral surface of the large diameter portion (45) of the through hole (42) and the outer peripheral surface of the portion on the right end side of the annular bead (46) in the pipe for piping (P3) (female side joint member ( An annular groove (47) into which the cylindrical portion (25) of 13) is fitted is formed. Also, in the pipe pipe (P3), the part existing in the large diameter part (45) is connected to the fitting convex part (43) and fitted into the hole part (26) of the female joint member (13). A cylindrical portion (48) is formed. Here, the cylindrical portion (48) of the male joint member (41) and the hole portion (26) of the female joint member (13) contribute to the uneven fitting of both joint members (41) (13). The fitting convex part (43) and the cylindrical part (48) of the male joint member (41) become the convex part (49) of the concave-convex fitting, and the fitting concave part (14) of the female joint member (13). And the hole part (26) in a cylindrical part (25) is the concave part (29).
また、雄側継手部材(41)の貫通穴(42)の左端部の内周面に、環状凹所(51)が全周にわたって形成され、配管用パイプ(P3)の一部分が拡管されて当該拡管部(52)が環状凹所(51)内に圧入されている。そして、環状ビード(46)が段部(44)に係合していること、および拡管部(52)が環状凹所内に圧乳されていることにより、両継手部材がおねじで連結される前の状態においても、雄側継手部材(41)と配管用パイプ(P3)とが左右方向に相対的に移動しないようになっている。 Further, an annular recess (51) is formed over the entire circumference on the inner peripheral surface of the left end portion of the through hole (42) of the male joint member (41), and a part of the pipe for piping (P3) is expanded to The expanded pipe portion (52) is press-fitted into the annular recess (51). And both joint members are connected with an external thread by the annular bead (46) engaging with the step part (44), and the expanded pipe part (52) being compressed in the annular recess. Even in the previous state, the male joint member (41) and the piping pipe (P3) do not move relative to each other in the left-right direction.
その他の構成は、実施形態１の配管用継手(10)と同じであり、同一物および同一部分には同一符号を付す。 Other configurations are the same as those of the pipe joint (10) of the first embodiment, and the same components and the same parts are denoted by the same reference numerals.
上記３つの実施形態においては、この発明の配管用継手(10)(30)(40)が、超臨界冷凍サイクルの配管(7)を構成する配管用パイプ(P1)(P2)(P3)どうしの接続に用いられているが、これに限定されるものではなく、この発明の配管用継手(10)(30)(40)は、超臨界冷凍サイクルの配管(7)を構成する配管用パイプ(P1)(P2)(P3)と圧縮機(1)、ガスクーラ(2)、エバポレータ(3)、アキュムレータ(4)、膨張弁(5)および中間熱交換器(6)のうちの少なくともいずれか１つの機器との接続に用いられることもある。この場合、雄側継手部材(11)(41)および雌側継手部材(13)のうちのいずれか一方が、上記機器に直接取り付けられる。 In the above three embodiments, the pipe joints (10) (30) (40) of the present invention are connected to the pipes (P1) (P2) (P3) for the pipes (7) of the supercritical refrigeration cycle. However, the present invention is not limited to this, and the pipe joints (10), (30), (40) of the present invention are pipes for the pipes (7) of the supercritical refrigeration cycle. (P1) (P2) (P3) and compressor (1), gas cooler (2), evaporator (3), accumulator (4), expansion valve (5) and intermediate heat exchanger (6) Sometimes used to connect to one device. In this case, one of the male joint members (11) and (41) and the female joint member (13) is directly attached to the device.
また、上記実施形態においては、この発明の配管用継手(10)が、超臨界冷凍サイクルにおける配管用パイプ(P3)と各種機器との接続、および／または配管用パイプ(P3)どうしの接続に用いられているが、これに限定されるものではなく、圧縮機、コンデンサ、エバポレータ、気液分離器および減圧器が配管により接続されており、かつフロン系冷媒が用いられる冷凍サイクルにおける配管用パイプ(P3)と各種機器との接続、および／または配管用パイプ(P3)どうしの接続に用いられてもよい。 Further, in the above embodiment, the pipe joint (10) of the present invention is used to connect the pipe for piping (P3) and various devices in the supercritical refrigeration cycle and / or to connect the pipe for piping (P3). Although it is used, it is not limited to this, and a pipe for piping in a refrigeration cycle in which a compressor, a condenser, an evaporator, a gas-liquid separator and a decompressor are connected by piping, and a chlorofluorocarbon refrigerant is used It may be used for connection between (P3) and various devices and / or connection between pipes for piping (P3).
(1)：圧縮機
(2)：ガスクーラ
(3)：エバポレータ
(4)：アキュムレータ（気液分離器）
(5)：膨張弁（減圧器）
(6)：中間熱交換器
(7)：配管
(10)(30)(40)：配管用継手
(11)(41)：雄側継手部材
(12)(43)：嵌合凸部
(13)：雌側継手部材
(14)：嵌合凹部
(15)：シールリング
(16)：冷媒流路
(18)(47)：環状溝
(21)：シールリング装着溝
(22)：バックアップリング
(23)：冷媒流路
(25)：円筒状部
(25a)：テーパ部
(44)：段部
(45)：大径部
(46)：環状ビード
(51)：環状凹所
(52)：拡管部
(P1)(P2)(P3)：配管用パイプ
(1): Compressor
(2): Gas cooler
(3): Evaporator
(4): Accumulator (gas-liquid separator)
(5): Expansion valve (pressure reducer)
(6): Intermediate heat exchanger
(7): Piping
(10) (30) (40): Fitting for piping
(11) (41): Male joint member
(12) (43): Mating convex part
(13): Female joint member
(14): Fitting recess
(15): Seal ring
(16): Refrigerant flow path
(18) (47): Annular groove
(21): Seal ring mounting groove
(22): Backup ring
(23): Refrigerant flow path
(25): Cylindrical part
(25a): Tapered part
(44): Step
(45): Large diameter part
(46): Annular bead
(51): Annular recess
(52): Tube expansion section
(P1) (P2) (P3): Pipe for piping
Claims (12)
雄側継手部材の雌側継手部材側を向いた面における嵌合凸部の周囲に環状溝が形成され、雌側継手部材の雄側継手部材側を向いた面における嵌合凹部の周囲に、雄側継手部材側に突出しかつ雄側継手部材の環状溝内に嵌め入れられる筒状部が設けられている冷凍サイクルの配管用継手。 A male joint member having a cylindrical fitting convex part, a female joint member having a fitting concave part into which the fitting convex part of the male joint member fits, and fitted on the outer peripheral surface of the fitting convex part A joint for piping of a refrigeration cycle provided with a seal ring that seals between a convex part and a fitting concave part,
An annular groove is formed around the fitting convex portion on the surface facing the female joint member side of the male joint member, and around the fitting concave portion on the surface facing the male joint member side of the female joint member, A pipe joint for a refrigeration cycle provided with a cylindrical portion that protrudes toward the male joint member and is fitted into an annular groove of the male joint member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006282297A JP2008101788A (en) | 2006-10-17 | 2006-10-17 | Piping joint for refrigerating cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006282297A JP2008101788A (en) | 2006-10-17 | 2006-10-17 | Piping joint for refrigerating cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2008101788A true JP2008101788A (en) | 2008-05-01 |
Family
ID=39436254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006282297A Withdrawn JP2008101788A (en) | 2006-10-17 | 2006-10-17 | Piping joint for refrigerating cycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2008101788A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996933A (en) * | 2012-11-27 | 2013-03-27 | 芜湖博耐尔汽车电气***有限公司 | Automobile air-conditioning pipeline butt-jointing structure |
| WO2013054815A1 (en) * | 2011-10-11 | 2013-04-18 | サンデン株式会社 | Pipe connection structure |
| US10876666B2 (en) | 2015-07-01 | 2020-12-29 | Ti Automotive Engineering Centre (Heidelberg) Gmbh | Connecting element for connecting a pipe to a component of an air-conditioning system |
| US11143178B2 (en) | 2016-03-09 | 2021-10-12 | Robert Bosch Gmbh | Piston pump |
| WO2022030895A1 (en) * | 2020-08-03 | 2022-02-10 | 한온시스템 주식회사 | Flange, pipe, and flange structure |
-
2006
- 2006-10-17 JP JP2006282297A patent/JP2008101788A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013054815A1 (en) * | 2011-10-11 | 2013-04-18 | サンデン株式会社 | Pipe connection structure |
| CN102996933A (en) * | 2012-11-27 | 2013-03-27 | 芜湖博耐尔汽车电气***有限公司 | Automobile air-conditioning pipeline butt-jointing structure |
| US10876666B2 (en) | 2015-07-01 | 2020-12-29 | Ti Automotive Engineering Centre (Heidelberg) Gmbh | Connecting element for connecting a pipe to a component of an air-conditioning system |
| US11143178B2 (en) | 2016-03-09 | 2021-10-12 | Robert Bosch Gmbh | Piston pump |
| WO2022030895A1 (en) * | 2020-08-03 | 2022-02-10 | 한온시스템 주식회사 | Flange, pipe, and flange structure |
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