JPS5848455Y2 - Flare pipe fittings for refrigeration equipment - Google Patents
Flare pipe fittings for refrigeration equipmentInfo
- Publication number
- JPS5848455Y2 JPS5848455Y2 JP16598678U JP16598678U JPS5848455Y2 JP S5848455 Y2 JPS5848455 Y2 JP S5848455Y2 JP 16598678 U JP16598678 U JP 16598678U JP 16598678 U JP16598678 U JP 16598678U JP S5848455 Y2 JPS5848455 Y2 JP S5848455Y2
- Authority
- JP
- Japan
- Prior art keywords
- flare
- flare pipe
- pipe joint
- refrigeration equipment
- pipe fittings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Joints With Pressure Members (AREA)
Description
【考案の詳細な説明】
この考案は、冷凍装置用フレア管継手に関するものであ
る。[Detailed Description of the Invention] This invention relates to a flare pipe joint for refrigeration equipment.
利用する産業分野は第１図に示す圧縮機１、凝縮器２、
膨張弁３および蒸発器４等を配管５を以て環状に連接し
て冷凍サイクルを構成する冷凍装置において、上記各機
器と配管を接続する継手、特に膨張弁３出口の継手、ま
たは蒸発器の首尾両端の継手に好適に適用される。The industrial field in which it is used is the compressor 1, condenser 2,
In a refrigeration system in which an expansion valve 3, an evaporator 4, etc. are connected in an annular manner via piping 5 to form a refrigeration cycle, joints that connect the above-mentioned devices and piping, particularly a joint at the outlet of the expansion valve 3, or both ends of the evaporator. Suitably applied to joints of
冷凍装置の運転時には、膨張弁３出口のフレア管継手、
または蒸発器の首尾に用いるフレア管継手は蒸発器とと
もに冷却され運転状態によっては着霜氷結が発生し、こ
の着霜氷結による蒸発器の冷却効率の低下を改善するた
めに除−霜運転が行われる。When operating the refrigeration equipment, the flare pipe joint at the expansion valve 3 outlet,
Alternatively, the flare pipe joint used for the evaporator is cooled together with the evaporator, and depending on the operating conditions, frosting and freezing may occur, and defrosting operation is performed to improve the decrease in cooling efficiency of the evaporator due to this frosting and freezing. be exposed.
冷凍運転、除霜運転がくり返し行われることにより、蒸
発器およびその周辺部表面は結氷、解氷がくり返され、
蒸発器フレア管継手等の螺合部には水分が徐々に進入し
て滞留し、その水分が冷凍運転時に凍結し、フレアナツ
トを破損し、または配管のフレアナンド内の拡開部を変
形させるなどの欠点があった。Due to repeated freezing and defrosting operations, the surface of the evaporator and its surroundings repeatedly freezes and thaws.
Moisture gradually enters and accumulates in the threaded joints of evaporator flare pipe joints, etc., and this moisture freezes during refrigeration operation, damaging the flare nut or deforming the expanded part in the flare nut of the piping. There were drawbacks.
本考案の解決すべき技術的課題は、冷凍装置に用いるフ
レア管継手の水分の凍結による破損、変形を防止するこ
とである。The technical problem to be solved by the present invention is to prevent damage and deformation of flare pipe joints used in refrigeration equipment due to freezing of moisture.
こＸに技術的課題を解決するために、本考案の講じた技
術的手段は下記の通りである。In order to solve this technical problem, the technical measures taken by the present invention are as follows.
（イ）フレア管継手の螺合部ねじの周面に沿い、中心軸
方向にねじ面の全長にわたる、−または複数の溝を刻設
する。(a) A groove or a plurality of grooves are carved along the circumferential surface of the threaded part of the flare pipe joint, extending along the entire length of the threaded surface in the direction of the central axis.
上記の技術的手段は次のように作用する。The above technical means works as follows.
フレア管継手の螺合部に進入した水分は除霜運転時には
解氷して雄ねじの周面に設けた溝に導かれて、ねじ面外
へ逸出し、冷凍運転になっても水分の凍結はなくなる。Moisture that has entered the threaded part of a flare pipe joint is thawed during defrosting operation, guided through the grooves provided on the circumferential surface of the male thread, and escapes out of the thread surface, so that even during refrigeration operation, the moisture does not freeze. It disappears.
完全に除去できないで、少量溝内に残存している水分が
あっても、冷凍運転時読水分は溝内で氷結膨出するので
、溝を埋めるにとどまり、フレアナツトの破損や配管の
フレアナンド内の拡開部の変形が防止できる。Even if a small amount of moisture remains in the groove without being completely removed, the moisture will freeze and expand in the groove during refrigeration operation, so it will only fill the groove and cause damage to the flare nut or damage to the piping flare nut. Deformation of the expanded portion can be prevented.
溝はねじ面の表面に設けたものであるので、フレアナツ
ト内の配管拡開部の端とフレア管継手の端が密着するよ
うねじを緊締することにより封入冷媒の気密は保たれ、
溝の形成は封入カスの気密には関係しない。Since the groove is formed on the surface of the threaded surface, the sealed refrigerant can be kept airtight by tightening the screw so that the end of the pipe expansion part inside the flare nut and the end of the flare pipe joint come into close contact.
The formation of the grooves is not related to the airtightness of the encapsulated scum.
本考案は下記の効果を生ずる。The present invention produces the following effects.
螺合の緊密性を増し、ゆるみ止めの効果がある。It increases the tightness of the screw connection and has the effect of preventing loosening.
これは雄ねじ面に溝を刻設したことにより雄ねじ溝部端
面と雌ねじとの間の摩擦抵抗の増加による。This is due to an increase in the frictional resistance between the end face of the male thread groove and the female thread due to the groove being formed on the male thread surface.
以下前記の技術的手段の一具体例を示すため図示実施例
について説明する。An illustrated embodiment will be described below to show a specific example of the above-mentioned technical means.
第２図は、本考案実施例の断面図を示し、第３図は第２
図Ａ−Ａ線に沿った断面図を示したものである。FIG. 2 shows a sectional view of the embodiment of the present invention, and FIG.
A cross-sectional view taken along line A-A in the figure is shown.
１１はフレア管継手、１２はフレアナンド、５は配管を
示１〜、フレア管継手１１にはフレアナツトの雌ねじに
螺合する雄ねじ１５の周面に沿い中心軸方向にねじ面の
全長にわたる−または複数の溝１３を刻設したものであ
る。11 is a flare pipe joint, 12 is a flare nut, and 5 is a pipe 1 to 1. The flare pipe joint 11 has a male thread 15 that is screwed into the female thread of the flare nut, and along the circumferential surface of the male thread 15 extends along the entire length of the thread surface in the direction of the central axis. A groove 13 is carved therein.
フレアナツト１２内には配管５の端末を拡開した拡開部
１４を有し、拡開部１４の端とフレア管継手の雄ねじの
端面は螺合時密着し気密を保−っている。The flare nut 12 has an expanded portion 14 which is an expanded end of the pipe 5, and the end of the expanded portion 14 and the end face of the male thread of the flare pipe joint are in close contact when screwed together to maintain airtightness.
第３図は溝１３を雄ねじの周面に３個所設けた例を示（
７たものである。Figure 3 shows an example in which grooves 13 are provided at three locations on the circumferential surface of a male screw (
7 things.
第１図は本考案を用いる冷凍サイクルの系統図、第２図
は本考案フレア管継手実施例の断面図、第３図は第２図
Ａ−Ａ線に沿った断面図を示す。
５・・・・・・配管、１１・・・・・・フレア管継手、
１２・・・・・・フレアナツト、１３・・・・・・溝。FIG. 1 is a system diagram of a refrigeration cycle using the present invention, FIG. 2 is a cross-sectional view of an embodiment of the flare pipe joint of the present invention, and FIG. 3 is a cross-sectional view taken along the line A--A in FIG. 5... Piping, 11... Flare pipe fitting,
12...Flare nut, 13...Groove.
Claims (1)
面の全長にわたる−または複数の溝を刻設した冷凍装置
用フレア管継手。A flare pipe joint for a refrigeration system in which one or more grooves are carved along the threaded peripheral surface of the threaded portion of the flare pipe joint in the direction of the central axis, spanning the entire length of the threaded surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16598678U JPS5848455Y2 (en) | 1978-12-04 | 1978-12-04 | Flare pipe fittings for refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16598678U JPS5848455Y2 (en) | 1978-12-04 | 1978-12-04 | Flare pipe fittings for refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5582578U JPS5582578U (en) | 1980-06-06 |
| JPS5848455Y2 true JPS5848455Y2 (en) | 1983-11-05 |
Family
ID=29164865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16598678U Expired JPS5848455Y2 (en) | 1978-12-04 | 1978-12-04 | Flare pipe fittings for refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848455Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7123232B2 (en) * | 2019-02-25 | 2022-08-22 | 三菱電機株式会社 | Refrigerant piping joint structure |
-
1978
- 1978-12-04 JP JP16598678U patent/JPS5848455Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5582578U (en) | 1980-06-06 |
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