JP3915181B2 - Flare connector sealing device - Google Patents

Flare connector sealing device Download PDF

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Publication number
JP3915181B2
JP3915181B2 JP17921997A JP17921997A JP3915181B2 JP 3915181 B2 JP3915181 B2 JP 3915181B2 JP 17921997 A JP17921997 A JP 17921997A JP 17921997 A JP17921997 A JP 17921997A JP 3915181 B2 JP3915181 B2 JP 3915181B2
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Prior art keywords
flare
pipe
connector
flare connector
insertion portion
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Expired - Fee Related
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JP17921997A
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Japanese (ja)
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JPH1123105A (en
Inventor
知己 高橋
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Fujitsu General Ltd
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Fujitsu General Ltd
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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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow in pipes or hoses

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)
  • Pipe Accessories (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、フレア接続具のシール装置に係わり、より詳細には、シール用のキャップの構成に関する。
【０００２】
【従来の技術】
室内機と室外機とに分離された空気調和機においては、工場出荷時、図４に示すように、前記室内機と室外機との配管を接続するフレア接続具２は、キャップ１のシールフランジ２４を、前記フレア接続具２のシール面２２に当接し、フレアナット５をねじ込み、同フレアナット５のシール面２３で押圧することによりシールされている。
前記キャップ１の第三挿入部２１は、前記フレア接続具２の管路７に挿入され、第一挿入部１１は、前記フレアナット５の貫通穴８に挿入されることにより、キャップ１の位置決めや組み込みがし易くなっている。
据付工事のとき、前記キャップ１が取り外され、前記室内機と室外機とを接続する冷媒用の配管が取り付けられる。
【０００３】
【発明が解決しようとする課題】
従来、空気調和機に使用される冷媒は、Ｒ２２のほぼ一種類に限られ、冷媒圧力が一定なため、前記フレア接続具に接続される配管の肉厚は一定であった。
しかるに近年、オゾン層保護のため、代替冷媒４１０Ａ（高圧冷媒）への切り替えにともない、フレア接続具に接続される配管の肉厚を、冷媒の種類により替えなければならなくなってきており、据付工事のとき、配管の肉厚の確認が必要になっている。
なお、配管の外径は一定なので、肉厚が厚くなると内径が小さくなるので、内径の差で肉厚を確認できる。
しかしながら、配管の肉厚や内径の目視による判別は難しく、据付工事時、代替冷媒４１０Ａ（高圧冷媒）を使用した空気調和機に、誤って薄肉の配管を使用してしまう危険があった。
本発明においては、上記の問題点に鑑み、接続する配管の内径を容易に確認することにより配管の肉厚を判別し、空気調和機の据付工事の作業性と、据付後の安全性とを向上するフレア接続具のシール装置を提供することを目的とする。
【０００４】
【課題を解決するための手段】
本発明は、上記課題を解決するため、管体と同軸となるように接続される開放管路を有し、先端の外周面に雄ネジを形成したフレア接続具と、内周面に前記雄ネジと対を成す雌ネジを有し、先端に前記フレア接続具の開放管路と同軸となる貫通穴を形成した当接部を有するフレアナットと、前記フレア接続具とフレアナットとの間に介在され、前記フレア接続具の開放管路を閉塞するシールフランジを備えたキャップを設けてなるフレア接続具のシール装置において、
前記キャップに、前記フレアナットの貫通穴に挿入され、接続される低圧配管の内径より若干小径で、かつ接続される高圧配管の内径より大径に形成した第一挿入部を設け、更に、前記第一挿入部の先端に、前記高圧配管の内径より若干小径に形成した第二挿入部を設けた構成となっている。
【０００５】
【発明の実施の形態】
以上のような構成にて、接続する配管の内径を容易に確認することにより配管の肉厚を判別し、空気調和機の据付工事の作業性と、据付後の安全性とを向上するフレア接続具のシール装置となる。
【０００６】
【実施例】
図１乃至図３にて示す、本発明の一実施例について説明する。
１は合成樹脂材料にて形成されたキャップ、２は外周面に雄ネジ３を形成し、空気調和機の冷媒の管体４の先端に取付けられたフレア接続具、５は内周面に前記雄ネジ３と対を成す雌ネジ６を形成したフレアナットを示す。
前記キャップ１には、前記フレア接続具２の管路７へ挿入し、前記キャップ１の位置決めを確実に行うための第三挿入部２１と、両面が前記フレア接続具２のシール面２２と前記フレアナット５のシール面２３とに当接密着するシールフランジ２４と、前記フレアナット５の貫通穴８に挿入し、同フレアナット５の組み込みを容易にするとともに、外径が従来の冷媒であるＲ２２用の低圧配管９の内径Ｄ１より若干小さく、かつ、代替冷媒である４１０Ａ用の高圧配管１０の内径Ｄ２より大きく形成された第一挿入部１１と、同第一挿入部１１の先端の同軸上に形成され、外径が代替冷媒である４１０Ａ用の高圧配管１０の内径Ｄ２より若干小さく形成された第二挿入部１２とが設けられている。
なお、前記第一挿入部１１と第二挿入部１２と第三挿入部２１とは、成形時のヒケ防止のため中が中空になっており、前記第一挿入部１１と第三挿入部２１との間に、前記フレア接続具２の管路７を閉塞する遮断壁２５が形成されている。室内機と室外機とに分離された空気調和機においては、工場出荷時には前記室内機と室外機との冷媒の配管は取り外されており、図１（Ａ）に示すように、前記キャップ１でシールされている。
据付工事を行うとき、図２で示すように、前記フレア接続具２より前記キャップ１を取り外し、同キャップ１の第一挿入部１１と第二挿入部１２とを前記配管に挿入してみる。そのとき、図３（Ａ）で示すように、前記第一挿入部１１まで挿入された場合、前記配管は冷媒Ｒ２２用の低圧配管９であることが確認され、もし、図３（Ｂ）で示すように、前記第二挿入部１２までしか挿入されない場合、前記配管は冷媒４１０Ａ用の高圧配管１０であることが確認される。
空気調和機に使用されている冷媒と、配管の適用冷媒が一致していることを確認後、図１（Ｂ）に示すように、前記低圧配管９または前記高圧配管１０を接続する。
【０００７】
【発明の効果】
以上説明したように、本発明によれば、接続する配管の内径を容易に確認することにより配管の肉厚を判別し、空気調和機の据付工事の作業性と、据付後の安全性とを向上するフレア接続具のシール装置となる。
【図面の簡単な説明】
【図１】本発明によるフレア接続具のシール装置の全体構成を示す側面から見た断面図で、（Ａ）はシール状態を示し、（Ｂ）は配管状態を示す。
【図２】本発明によるフレア接続具のシール装置の全体構成を示す分解図である。
【図３】本発明によるフレア接続具のシール装置の説明図で、（Ａ）は低圧配管の場合で、（Ｂ）は高圧配管の場合である。
【図４】従来のフレア接続具のシール装置の全体構成を示す側面から見た断面図である。
【符号の説明】
１ キャップ
２ フレア接続具
３ 雄ネジ
４ 管体
５ フレアナット
６ 雌ネジ
７ 管路
８ 貫通穴
９ 低圧配管
１０ 高圧配管
１１ 第一挿入部
１２ 第二挿入部
２４ シールフランジ
Ｄ１ 低圧配管の内径
Ｄ２ 高圧配管の内径[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing device for a flare connector, and more particularly, to a configuration of a sealing cap.
[0002]
[Prior art]
In an air conditioner separated into an indoor unit and an outdoor unit, the flare connector 2 that connects the pipes of the indoor unit and the outdoor unit at the time of factory shipment is a seal flange of the cap 1. 24 is brought into contact with the sealing surface 22 of the flare connector 2, and the flare nut 5 is screwed and pressed by the sealing surface 23 of the flare nut 5.
The third insertion portion 21 of the cap 1 is inserted into the pipe line 7 of the flare connector 2, and the first insertion portion 11 is inserted into the through hole 8 of the flare nut 5, thereby positioning the cap 1. And easy to install.
At the time of installation work, the cap 1 is removed, and a refrigerant pipe that connects the indoor unit and the outdoor unit is attached.
[0003]
[Problems to be solved by the invention]
Conventionally, the refrigerant used in the air conditioner is limited to almost one type of R22, and since the refrigerant pressure is constant, the thickness of the pipe connected to the flare connector is constant.
However, in recent years, in order to protect the ozone layer, the thickness of the pipe connected to the flare connector has to be changed depending on the type of the refrigerant in accordance with the switching to the alternative refrigerant 410A (high pressure refrigerant). In this case, it is necessary to check the thickness of the pipe.
Since the outer diameter of the pipe is constant, the inner diameter decreases as the wall thickness increases, so that the wall thickness can be confirmed by the difference in inner diameter.
However, it is difficult to visually determine the thickness and inner diameter of the pipe, and there is a risk that a thin-walled pipe may be mistakenly used for the air conditioner using the alternative refrigerant 410A (high-pressure refrigerant) during installation work.
In the present invention, in view of the above problems, the thickness of the pipe is determined by easily confirming the inner diameter of the pipe to be connected, and the workability of the air conditioner installation work and the safety after the installation are improved. It is an object of the present invention to provide an improved flare connector sealing device.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention has a flare connector having an open pipe line connected to be coaxial with a pipe body and having a male screw formed on the outer peripheral surface of the tip, and the male connector on the inner peripheral surface. A flare nut having a female screw that is paired with a screw and having a contact portion formed at the tip with a through hole that is coaxial with the open pipe line of the flare connector; and between the flare connector and the flare nut In a flare connector sealing device comprising a cap provided with a seal flange interposed to close an open pipe line of the flare connector,
The cap is provided with a first insertion portion that is inserted into the through-hole of the flare nut and formed to have a diameter slightly smaller than the inner diameter of the low-pressure pipe to be connected and larger than the inner diameter of the high-pressure pipe to be connected, The second insertion portion formed slightly smaller than the inner diameter of the high-pressure pipe is provided at the tip of the first insertion portion.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
With the above-mentioned configuration, flare connection that improves the workability of installation work of the air conditioner and the safety after installation by determining the wall thickness of the pipe by easily checking the inner diameter of the pipe to be connected It becomes a device sealing device.
[0006]
【Example】
An embodiment of the present invention shown in FIGS. 1 to 3 will be described.
1 is a cap formed of a synthetic resin material, 2 is a male screw 3 formed on the outer peripheral surface, a flare connector attached to the tip of the refrigerant tube 4 of the air conditioner, and 5 is an inner peripheral surface. The flare nut which formed the internal thread 6 which makes a pair with the external thread 3 is shown.
The cap 1 is inserted into the pipe line 7 of the flare connector 2, and the third insertion portion 21 for reliably positioning the cap 1, both surfaces of the seal surface 22 of the flare connector 2 and the A seal flange 24 that abuts and closely contacts the seal surface 23 of the flare nut 5 and is inserted into the through hole 8 of the flare nut 5 to facilitate the incorporation of the flare nut 5 and has an outer diameter that is a conventional refrigerant. The first insertion portion 11 formed slightly smaller than the inner diameter D1 of the low-pressure pipe 9 for R22 and larger than the inner diameter D2 of the high-pressure pipe 10 for 410A, which is an alternative refrigerant, and the coaxial of the tip of the first insertion section 11 There is provided a second insertion portion 12 that is formed on the outer diameter and is slightly smaller than the inner diameter D2 of the high-pressure pipe 10 for 410A that is an alternative refrigerant.
The first insertion portion 11, the second insertion portion 12, and the third insertion portion 21 are hollow in order to prevent sink marks during molding. A blocking wall 25 that closes the conduit 7 of the flare connector 2 is formed therebetween. In an air conditioner separated into an indoor unit and an outdoor unit, the refrigerant piping between the indoor unit and the outdoor unit is removed at the time of shipment from the factory, and as shown in FIG. It is sealed.
When performing installation work, as shown in FIG. 2, the cap 1 is removed from the flare connector 2, and the first insertion portion 11 and the second insertion portion 12 of the cap 1 are inserted into the pipe. At that time, as shown in FIG. 3A, when the first insertion portion 11 is inserted, it is confirmed that the pipe is the low-pressure pipe 9 for the refrigerant R22. As shown, when only the second insertion part 12 is inserted, it is confirmed that the pipe is the high-pressure pipe 10 for the refrigerant 410A.
After confirming that the refrigerant used in the air conditioner matches the refrigerant applied to the pipe, the low-pressure pipe 9 or the high-pressure pipe 10 is connected as shown in FIG.
[0007]
【The invention's effect】
As described above, according to the present invention, the wall thickness of the pipe is determined by easily confirming the inner diameter of the pipe to be connected, and the workability of the air conditioner installation work and the safety after the installation are improved. It becomes the sealing apparatus of the flare connector which improves.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view seen from the side showing the overall configuration of a flare connector sealing device according to the present invention, wherein FIG.
FIG. 2 is an exploded view showing the overall configuration of the flare connector sealing device according to the present invention.
FIGS. 3A and 3B are explanatory views of a sealing device for a flare connector according to the present invention, in which FIG. 3A shows a case of low-pressure piping and FIG.
FIG. 4 is a cross-sectional view seen from the side, showing the overall structure of a conventional flare connector sealing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap 2 Flare connector 3 Male thread 4 Pipe body 5 Flare nut 6 Female thread 7 Pipe line 8 Through hole 9 Low pressure pipe 10 High pressure pipe 11 First insertion part 12 Second insertion part 24 Seal flange D1 Inner diameter D2 of low pressure pipe High pressure Inner diameter of piping

Claims (1)

管体と同軸となるように接続される開放管路を有し、先端の外周面に雄ネジを形成したフレア接続具と、内周面に前記雄ネジと対を成す雌ネジを有し、先端に前記フレア接続具の開放管路と同軸となる貫通穴を形成した当接部を有するフレアナットと、前記フレア接続具とフレアナットとの間に介在され、前記フレア接続具の開放管路を閉塞するシールフランジを備えたキャップを設けてなるフレア接続具のシール装置において、
前記キャップに、前記フレアナットの貫通穴に挿入され、接続される低圧配管の内径より若干小径で、かつ接続される高圧配管の内径より大径に形成した第一挿入部を設け、更に、前記第一挿入部の先端に、前記高圧配管の内径より若干小径に形成した第二挿入部を設けてなることを特徴とするフレア接続具のシール装置。An open pipe connected to be coaxial with the pipe body, a flare connector having a male screw formed on the outer peripheral surface of the tip, and a female screw that forms a pair with the male screw on the inner peripheral surface; A flare nut having a contact portion formed with a through hole coaxial with the open pipe line of the flare connector at the tip, and an open pipe line of the flare connector interposed between the flare connector and the flare nut. In a flare connector sealing device provided with a cap having a sealing flange for closing
The cap is provided with a first insertion portion that is inserted into the through-hole of the flare nut and is formed with a diameter slightly smaller than the inner diameter of the low-pressure pipe to be connected and larger than the inner diameter of the high-pressure pipe to be connected. A sealing device for a flare connector, wherein a second insertion portion formed slightly smaller in diameter than the inner diameter of the high-pressure pipe is provided at the tip of the first insertion portion.
JP17921997A 1997-07-04 1997-07-04 Flare connector sealing device Expired - Fee Related JP3915181B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17921997A JP3915181B2 (en) 1997-07-04 1997-07-04 Flare connector sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17921997A JP3915181B2 (en) 1997-07-04 1997-07-04 Flare connector sealing device

Publications (2)

Publication Number Publication Date
JPH1123105A JPH1123105A (en) 1999-01-26
JP3915181B2 true JP3915181B2 (en) 2007-05-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4067016B2 (en) * 2005-11-17 2008-03-26 ダイキン工業株式会社 Pipe joint lid structure, partition lid, refrigeration system, heat pump water heater, water supply piping, piping connection method, and on-site piping construction method

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