JPS5966698A - Structure of sealed up stem part of control valve for heat exchanger - Google Patents

Abstract

PURPOSE:To obtain a sealing-tight fitting method for a valve stem of which O-ring is prevented from coming off, by providing a part wherein small area can be abutted against the inside wall of a recess part to press the ring, and by performing supersonic welding to the part by concentrating supersonic waves to the abutted part. CONSTITUTION:A press ring 15, which is made of synthetic resin, is fitted between a valve stem 10 and a recess 14, in order to prevent an O-ring from coming off from the recess part 14. Projections 15a of which sectional surface have sharp angles are formed on the periphery of the inside surface 15b of a press ring 15, fronting to the step part 14a on the bottom of a recess 14. The press ring 15 is fitted to a base 6a in such a manner that the press ring 15 is fitted in the recess 14, after the O-ring is inserted into the innermost part of a recess 14, and the press ring 15 is pressed against the step part 14a, with the supersonic waves being applied to the press ring 15 to the part 14a by a supersonic horn 16. Because the supersonic waves transmitted to the base part 6a from the press ring 15 passes through the projection 15a which is abutted against the step part 14a concentrically, the projection 15a is melted off, and the press ring 15 is welded to the step part 14a.

Description

【発明の詳細な説明】 （技術分野）、。[Detailed description of the invention] (Technical field),.

この発明は、液入口または出口に制御弁を設けて液の流
通を制御するようにした熱交換器において、弁軸をＯリ
ング、を介して液密に収伺けた軸封部分から０リングが
脱落・しな・いように抑える制御弁の軸封部の構成方法
に関する０（背景技術）　　　　　　　　　　　　：第
１図に例示するように、隔壁１により左右、に仕切った
上タンク・２と仕切らないＦタンク３とを多数のチュー
ブ４．４で連結し、各チューブの間にフィン５−５を挿
入し、入口−６から温水を上タンク、の仕切られた右の
部分に送給してチューブ４の右の部分から下タンク３に
流下させ、、更ニチューブ４の左の部分から−Ｉニタン
クの左の部分ニ泥水を上、昇させて出口管７から排出し
、：、チューブ４、フィン５０間を流通させた空気を温
める熱交換器が使用されている０　′このよ、うな熱交
換器において、温水の流、通を制御するために、人口管
６（または出口管７・）に制御弁を設けることが□ある
。This invention relates to a heat exchanger in which a control valve is provided at a liquid inlet or an outlet to control the flow of liquid, and the O-ring is attached to the valve stem from a shaft sealing part that can be accommodated in a liquid-tight manner via an O-ring. 0 (background technology) regarding a method of configuring the shaft seal of a control valve to prevent it from falling off or falling off: As illustrated in Fig. 1, an upper tank is partitioned into left and right by a partition wall 1, and an F is not partitioned into the upper tank. The tank 3 is connected with a large number of tubes 4.4, fins 5-5 are inserted between each tube, hot water is sent from the inlet-6 to the partitioned right part of the upper tank, and the tube 4. The muddy water flows down from the right part of the tube 4 to the lower tank 3, and from the left part of the tube 4 to the left part of the -I tank, it rises and is discharged from the outlet pipe 7. A heat exchanger is used to warm the air flowing between the two. In such a heat exchanger, a control is installed in the artificial pipe 6 (or outlet pipe 7) to control the flow of hot water. A valve may be provided.

・　第２図は、上タンク２、入口管６、入口管の・基部
６３に嵌合する弁筒８等を合成樹脂で造り、。- In Figure 2, the upper tank 2, the inlet pipe 6, the valve cylinder 8 that fits into the base 63 of the inlet pipe, etc. are made of synthetic resin.

Ｆ、ＩＹ金、属０．呻板、９・弁軸１０を取付け・、た
制御弁の辰イｊけ構造ｆｌｌ”’＝”＝し、第３図はこ
れの要□肩ト拡大して宗ず。弁板９を取付けるには、人
品管１□ の基部６ａ、この基部に嵌合した弁筒８に側方から弁軸
１０を挿通し弁□筒□８で軸受けした後、弁筒８内て弁
板９をろう伺けし、弁軸の両端部の軸封部には、第３”
”　ＩＩＩ　’のよ□うに、０リング１１１□座□板１
２、＜い込みり′フグ１ａヲ底合して入口管の基部６ａ
、に形成した円筒形の凹部１４に押込み、弁：軸１０７
）部分から怜竺の漏洩、を防止している。（い込みリン
グ１３は、周縁部を鋭く切断し且つ−、方向ｖｃ折曲げ
たもＱで、折曲げ縁を外方に向けて凹部１４ニ押込むと
、外方淀折曲げた縁が四部１４の内壁ニくイ込んで座釜
の凹部１４か□らの脱出、従って０リングＪ１の脱出を
阻止し、弁軸１０が入口管の基部６ａを貫通する部分か
らの液の漏洩を防止するものである０ しかしながら、軸封部をこのように構成する・従来の弁
軸の液密取付は方法では、くい込みり１１１ ン乙１３−ｂ：凹部１４に浅くくい込むだけであるため
、　　　　・・・−１：：・・□霞□・・１．１ 例えば自動小の暖房器に使用するような場合に、Ｆ胴中
にくい込み１）′ジグ１３が！部１４力ζら気れて　　
　　　ハ１１１＾１１ ・座金１２、ＯＩＪング１」が脱落し弁軸１０の部分か
ら液漏れを生じる事故を起し易い。F, IY gold, genus 0. Attach the valve plate 9 and the valve stem 10, and then install the control valve's longitudinal structure. To install the valve plate 9, insert the valve stem 10 from the side into the base 6a of the valve pipe 1□ and the valve cylinder 8 fitted to this base, and after receiving the bearing with the valve cylinder 8, insert the valve stem 10 into the valve cylinder 8. The valve plate 9 is soldered, and the shaft seals at both ends of the valve shaft are fitted with 3"
``III'', 0 ring 111 seat plate 1
2.<Enter the bottom of the puffer fish 1a and insert the base 6a of the inlet pipe.
, into the cylindrical recess 14 formed in the valve:shaft 107.
) Prevents the leakage of silk from the parts. (The cut-in ring 13 is made by cutting the peripheral edge sharply and bending it in the directions VC and Q. When the folded edge is pushed into the concave part 14 with the bent edge facing outward, the outwardly bent edge is folded into four parts. 14 to prevent the O-ring J1 from escaping from the concave portion 14 of the seat pot, thereby preventing leakage of liquid from the portion where the valve stem 10 penetrates the base 6a of the inlet pipe. However, with the conventional method of liquid-tight mounting of the valve stem, in which the shaft seal is configured in this way, the valve stem is only cut into the recess 14 shallowly.・-1::・・□Kasumi□・・・1.1 For example, when using it for a small automatic heater, insert the jig 13 into the F body! Part 14 Power ζ et al.
C111＾11 ・The washer 12 and OIJ ring 1 are likely to fall off, causing an accident where fluid leaks from the valve stem 10.

（本発明の目的） 木□発□明は、□とのようなＣＩ’ｌＪンク゛□の脱落
を起さない弁軸の液咎収伺げ方法を得ることを＠ｌ（′
もとした発明である。(Objective of the present invention) The inventor of the present invention aimed to obtain a method for collecting liquid from a valve stem that does not cause the CI'lJ connector to fall off like □.
This is an original invention.

（本発明の憔翳） 本発明は、合成樹脂製の、入口管または出口、、管の基
部６；１の側部に設けた・四部１・１に嵌合させた合成
樹１ｍ製の抑えリング編、□基部６ａの凹部１４に超音
波溶接し基部６ａｉ／ｅ確実に結合された抑Ｌ　１）”
；’；Ｋ　、、ｌ：　ｊ）　’Ｏ’ｌＪ　；７１］訂脱
”’１ｋｆｆｉ、ｔｆ　６　ｎｌｌ封部の構成方法を得
たものてあって、抑えリングに凹部］４の内壁に小面積
で当接する部分を設け、超音波をこの当接部に集中させ
てこの押−分で超音波溶接を行なうようにしたものであ
る。(Shadows of the present invention) The present invention relates to an inlet pipe or an outlet pipe made of synthetic resin, and a 1 m synthetic wood restraint fitted to the four parts 1 and 1 provided on the side of the base part 6 of the pipe. Ring edition, □Resistance L securely connected to the base 6ai/e by ultrasonic welding to the recess 14 of the base 6a 1)"
;';K ,,l: j) 'O'lJ; A part is provided in which the welding contacts come into contact with each other, and ultrasonic waves are concentrated on this abutting part so that ultrasonic welding is performed by this pressing force.

（本発明の実施例） ・　・第−実施例 第４〜５′図は本発明の第一実施例を示す。入口管６０
基部６ａの外側面に四部１４を形成し、この四部１４内
に挿入されたＣ）　ＩＪソング１により弁軸１０の貫通
部の液密を保ち、基部６ａ内に弁筒８：（第２図）を嵌
合し、この弁筒８で上記弁軸用を軸受することは従来構
造と同縁である・、　この実施例においては、０リング
１１の凹部】４内からの脱落を防止するために、第３図
に示した従来の場合のような座板１２やくい込みリング
１３を使用せず、代りに弁軸ｌＯと凹部１４との間に嵌
合する合成樹脂製の抑えリング１５を使用する。(Embodiments of the present invention) - -Embodiment Figures 4 to 5' show a first embodiment of the present invention. Inlet pipe 60
A four part 14 is formed on the outer surface of the base 6a, and the IJ song 1 inserted into the four part 14 maintains liquid tightness at the penetrating part of the valve stem 10, and the valve cylinder 8 is inserted into the base 6a (Fig. 2). ) and bearing the valve stem with this valve cylinder 8 is the same as the conventional structure. In this case, instead of using the seat plate 12 and the bite ring 13 as in the conventional case shown in FIG. 3, a synthetic resin restraining ring 15 that fits between the valve stem lO and the recess 14 is used. do.

四部１４の底の段部１４’ａＫ対向する抑えリング１５
の内面＋５　ｂ　Ｋは周囲に断面が鋭角の突条１５　ａ
を形成する０突条１５　ａは円形に連続するものであっ
ても断続する不連続のものでもよい。Step part 14'aK at the bottom of four parts 14 Opposing restraint ring 15
Inner surface +5 b K is a protrusion 15 a with an acute cross section on the periphery
The ridges 15a forming the ridges 15a may be continuous circularly or discontinuously discontinuous.

この抑えリング１５を基部６ａに取付けるには、第４図
のようにＯリングＪ１を凹部】４の奥に挿入した後、抑
えリング１５を凹部１４硬嵌合Ｃ超音波ホーン１６で超
音波を加えつつ抑えリング１５を段□部１．ｔａｎ押し
付ける０抑えリン？Ｓから基部６ａへ通る超音波は、段
部１４　ａ　Ｕｔ圧核される突条・１５ａを集中的に通
るため、この突条１５　ａ’づ（溶け□て抑え□リング
１５が段部１４　ａに溶接される。抑□えリング１５の
内面１５ｂと段部１．４　ａとの間には、□溶　　　　
　　□接前には突条＋５”ａの高さ’　（ｏ、　３％程
度）分だけの隙間が存ｒ１［するが、この隙間は゛突条
１５ａが一溶融するとともになくなり、−溶接時には上
記内□面１５ｂは段部１４　ａと当接する０突条１５ａ
から溶゛出した樹脂の一部はこの当接面間に浸出するが
、更にＯリングＩＪニまで達することはなく、溶−接待
に生じる高温の溶融樹脂−より０リングが傷むことはな
い０　　　　　　　　　　　　　　：・このようにして
第２図に示した基部６ａの両側部分子ｚｏクリング１を
装着した後、弁軸１０を０リン□グ１１、抑えリング１
．５　Ｋ挿通し、弁板９を弁軸１０ニろう伺けして入口
管の木部６ａ内に弁が組込まれる。　　　　　　　、１ 第二実施例 第６〜７図は本発明の第五実施例を示す・これは超音波
の集中部を抑え、リング１５　Ｈｌ：よび凹部１４の各
側面部分に形成したものである：６１　　　：抑えリン
グ１５の下部外’ｆ＜、　、Ｌ４少し径を小さくシ；−
Ｊ二部外面との間に傾斜段ｍ１１７を形成子る０凹部１
４ｖｃは抑えリングの傾斜←部１７ニ合致する傾斜段部
１８を形成し、抑えリイグ１５を凹部１１ニ嵌合して両
傾斜段部が当接し□たとき抑えリング１５の内面１５１
〕と段部１４ａとの間に小間隙が形成されるようにする
。To attach this restraining ring 15 to the base 6a, as shown in FIG. While adding the holding ring 15 to the step □ section 1. 0 suppressing phosphorus that presses tan? The ultrasonic waves passing from S to the base 6a intensively pass through the protrusion 15a that is indented at the step 14a. There is a □ weld between the inner surface 15b of the restraining ring 15 and the stepped portion 1.4a.
□There is a gap equal to the height of the protrusion + 5"a' (o, about 3%) at the front of the contact r1 [However, this gap disappears as the protrusion 15a melts, and - during welding, the above-mentioned amount is □The surface 15b is a ridge 15a that comes into contact with the stepped portion 14a.
Some of the resin that melts from the O-ring IJ leaks between the contact surfaces, but it does not reach the O-ring IJ, and the O-ring is not damaged by the high temperature molten resin that occurs during welding. :・After attaching the molecular zo rings 1 on both sides of the base 6a shown in FIG.
．． 5, the valve plate 9 is inserted into the valve stem 10, and the valve is assembled into the wooden part 6a of the inlet pipe. , 1 Second Embodiment FIGS. 6 and 7 show a fifth embodiment of the present invention. This suppresses the concentration of ultrasonic waves and is formed on each side of the ring 15 Hl and the recess 14: 61: Outside the lower part of the retaining ring 15'f<, , L4 slightly reduce the diameter;-
Forming an inclined step m117 between the outer surface of the J2 part and the recessed part 1
4vc forms an inclined stepped portion 18 that matches the inclined ← portion 17 of the restraining ring, and when the restraining ring 15 is fitted into the recessed portion 11 and both inclined stepped portions abut □, the inner surface 151 of the restraining ring 15
] and the step portion 14a so that a small gap is formed between the step portion 14a.

超音波ホーンを当てて抑えリング１５を凹部内に押圧す
ると、小面積で接触する抑えリング１５の傾斜段部１７
と四部】４の傾斜−□部１８とに超音波が溶けて第７−
図のように溶 接される。溶接完了時には、抑えリングの内面１５１）
と凹部の段部１４　ａとが当接し、上記傾斜段部から溶
出した樹脂の一部が仁の当接面間に浸出するが０リング
ＩＩＫまで達しないことは前述の第一実施例のｉ合と同
様である・ このように主として傾斜段部１７．１８において溶接さ
れて抑え１ルグ１５は基部６ａに強固に結合さＡτ呵た
め０衣ング１１の脱落は阻止されるＯその他は実施例□
ｌと同様である０ （本発明の効−） 本発明は、合成樹脂の抑えリング１５を合成樹脂の人ロ
管基部６ａＫ超音波溶接してＯリング１１の脱落を防止
するもめであるから、溶接作業が容易であり、従来の座
金１２、くい込みリング１３ニ、より０リングの脱落を
阻止する構造に比べて作用が確実である。そしてこの溶
接時には抑えリング１５と基部６ａとの間に超音波の集
中通路を設けたから、小さな超音波出力て十分な溶接を
行なうことができ、溶接時に溶融樹脂が０リングＫまで
流れ付着してその密封作用を害なったり弁軸１０の回動
時に０リングを傷めたりする害を避けることができるも
のである。When the ultrasonic horn is applied to press the restraining ring 15 into the recess, the inclined stepped portion 17 of the restraining ring 15 comes into contact with a small area.
and 4th part] The ultrasonic wave melts in the slope of 4 - □ part 18 and the 7th part -
Welded as shown. When welding is completed, the inner surface of the retaining ring 151)
and the stepped portion 14a of the recess are in contact with each other, and a portion of the resin eluted from the inclined stepped portion leaches between the contact surfaces of the grooves, but does not reach the O-ring IIK as shown in i of the first embodiment described above. In this way, the retainer ring 15 is welded mainly at the inclined step portions 17 and 18 and is firmly connected to the base portion 6a, so that the retainer ring 11 is prevented from falling off. □
0 (Effects of the Invention) The present invention is to prevent the O-ring 11 from falling off by ultrasonically welding the synthetic resin restraining ring 15 to the synthetic resin manifold tube base 6aK. The welding work is easy, and the operation is more reliable than the conventional structure that prevents the washer 12, bite ring 13, and O-ring from falling off. During this welding, since a concentrated ultrasonic passage was provided between the holding ring 15 and the base 6a, sufficient welding can be performed with a small ultrasonic output, and the molten resin does not flow and adhere to the O-ring K during welding. This prevents damage to the sealing effect or damage to the O-ring when the valve stem 10 rotates.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は制御弁を設けた熱交換器を例示する二面図、第
２図は第１図のＡ　−’　Ａ拡大断面図、第３図は第２
図の軸一部？拡大図、ｆｉｇ：、　４　：’図Ｂ−トは
本発明の実施例□を示し、第′４図□は第一実施例、＃
□、）、。♀工部ゎ。ユ、ｉｏ−・第５図は溶接後の同
部分つ断面図、第６図は第二実施例の溶□接前の状態を
示す軸封゛部分の拡大断面図、第７図は溶接後の同部分
の断面図であるＱ １：隔壁、２：土タンク、３：下タンク、４：チューブ
、５：フィン、６：入口管、６ａ：基部、７：出口管、
８：弁筒、９：弁板、１０：弁軸、１１：０リング：、
Ｊ２：座金、１３；＜い込みリング、１１１：凹部、１
４ａ：段部、１５：′抑えリング、１５ａ：突条、１５
　ｂ　ｌ：内□面、１６：：、超音障ホー−： ン、Ｉ７．１８：傾斜段部０ 特許出願人　　日本ラヂヱーター株式会社４６５ ・、第　ｌ　図 Ａ−１ 第２図 第３１°パ１ 第４図 ４ 第５図 第　６１イ１ 、ｔ５ 第７１ヌ１Fig. 1 is a two-sided view illustrating a heat exchanger equipped with a control valve, Fig. 2 is an enlarged sectional view taken along A-'A of Fig.
Part of the axis of the diagram? Enlarged view, fig.
□,),. ♀ Engineering department wa. Figure 5 is a cross-sectional view of the same part after welding, Figure 6 is an enlarged cross-sectional view of the shaft sealing part showing the state before welding of the second embodiment, and Figure 7 is after welding. 1: Bulkhead, 2: Soil tank, 3: Lower tank, 4: Tube, 5: Fin, 6: Inlet pipe, 6a: Base, 7: Outlet pipe,
8: Valve cylinder, 9: Valve plate, 10: Valve stem, 11: 0 ring:,
J2: Washer, 13; <Inset ring, 111: Recessed portion, 1
4a: Stepped portion, 15: 'Retaining ring, 15a: Projection, 15
bl: Inner □ surface, 16::, Ultrasound impedance horn: 17.18: Inclined step 0 Patent applicant: Japan Radiator Co., Ltd. 465 ・, Fig. A-1 Fig. 2 Fig. 31° Part 1 Figure 4 4 Figure 5 61-1, t5 71-1

Claims (1)

【特許請求の範囲】[Claims] 合成樹脂製入口管また。は出口管の基部（６ａ）に側方
から挿通され、て基部内で弁板を取伺けられＯリング（
月）Ｋより液密に保たれる弁軸（１０）の位置を囲んで
基部（６ａ）の側部に形成した凹部（１４）に、四部（
１１Ｉ）内に嵌合させたときに小面積で凹部内面に当接
する部分を設けた合成樹脂製の抑えリング（１５）を嵌
合させ、超音波ホーン（１６）で抑えリングを押して超
音波を上記小面積当接部を集中的に通過させてこの部分
を凹部内面に溶接さす、この溶接後、弁軸（１０）をＯ
リング（１１）を通して基部（６ａ）に挿通することを
特徴とする熱交換器用制御弁の軸封部の構成方法０Also has a synthetic resin inlet pipe. is inserted into the base (6a) of the outlet pipe from the side, and the valve plate is removed inside the base, and the O-ring (
Four parts (
A synthetic resin holding ring (15) with a small area that comes into contact with the inner surface of the recess when fitted into the inside of the recess (11I) is fitted, and the holding ring is pushed with an ultrasonic horn (16) to emit ultrasonic waves. The small-area contact portion is intensively passed through and this portion is welded to the inner surface of the recess. After this welding, the valve stem (10) is
Method 0 for configuring a shaft seal of a heat exchanger control valve, characterized by inserting the shaft seal into the base (6a) through the ring (11)