JPH03220B2 - - Google Patents
Info
- Publication number
- JPH03220B2 JPH03220B2 JP16228985A JP16228985A JPH03220B2 JP H03220 B2 JPH03220 B2 JP H03220B2 JP 16228985 A JP16228985 A JP 16228985A JP 16228985 A JP16228985 A JP 16228985A JP H03220 B2 JPH03220 B2 JP H03220B2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- tube
- tubes
- bundle
- synthetic resin
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 14
- 239000000057 synthetic resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 229920006026 co-polymeric resin Polymers 0.000 claims description 4
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000004927 fusion Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/137—Beaded-edge joints or bead seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5227—Joining tubular articles for forming multi-tubular articles by longitudinally joining elementary tubular articles wall-to-wall (e.g. joining the wall of a first tubular article to the wall of a second tubular article) or for forming multilayer tubular articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/18—Heat-exchangers or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
- B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
この発明明は、熱交換器用合成樹脂チユーブ束
の製造方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a bundle of synthetic resin tubes for a heat exchanger.
従来、この種の熱交換器用合成樹脂チユーブ束
の製造方法としては、弗素樹脂のような耐蝕性お
よび耐熱性に優れた物性を有する熱可塑性樹脂で
形成した多数の可撓性チユーブを引き揃え、その
端部分へ四弗化エチレン樹脂の硬いスリーブ内に
挿入し、チユーブの端部分の内部に加熱流体を導
入し、次に加熱されたチユーブの内外側間に圧力
差を加え、それによりチユーブ同志をハニカム状
態に変形して融着させると共にスリーブ内面にも
一体に融着させて水密構造とする方法が提案され
ている。 Conventionally, the method for manufacturing this type of synthetic resin tube bundle for heat exchangers involves arranging a large number of flexible tubes made of a thermoplastic resin with excellent corrosion resistance and heat resistance, such as fluororesin. The end portion of the tube is inserted into a rigid sleeve of tetrafluoroethylene resin, a heated fluid is introduced inside the end portion of the tube, and a pressure difference is then applied between the inside and outside of the heated tube, thereby A method has been proposed in which the material is transformed into a honeycomb state and fused together, and also integrally fused to the inner surface of the sleeve to create a watertight structure.
前記合成樹脂チユーブ束の製造方法によれば、
熱交換器本体に簡単に装着できる合成樹脂チユー
ブ束が容易に得られるが、弗素樹脂チユーブと四
弗化エチレン樹脂スリーブ内側面との加熱融着
は、スリーブの四弗化エチレン樹脂の融点以上の
加熱によつて行われるので、弗素樹脂チユーブの
溶融粘度はかなり低くなつており、また加熱処理
による四弗化エチレン樹脂スリーブの内径収縮作
用により、これに接している弗素樹脂チユーブに
潰れ現象が起り、それが他のチユーブにも波及し
て同様の潰れ現象が発生する欠点がある。このよ
うな潰れ現象が起ると、チユーブの融着が不良と
なり、完全な水密構造が得られにくゝなる。ま
た、その製品は熱交換媒体の流れが悪く、満足す
る熱交換を発揮できないものとなる。 According to the method for manufacturing a synthetic resin tube bundle,
A bundle of synthetic resin tubes that can be easily attached to the heat exchanger body can be easily obtained, but the heating and fusing of the fluororesin tubes and the inner surface of the tetrafluoroethylene resin sleeve must be performed at a temperature higher than the melting point of the tetrafluoroethylene resin of the sleeve. Since this is done by heating, the melt viscosity of the fluororesin tube is quite low, and the shrinkage effect of the inner diameter of the tetrafluoroethylene resin sleeve due to the heat treatment causes the fluororesin tube in contact with it to collapse. However, this has the disadvantage that it spreads to other tubes and a similar collapse phenomenon occurs. When such a collapse phenomenon occurs, the tubes become poorly fused and it becomes difficult to obtain a completely watertight structure. In addition, the product has a poor flow of heat exchange medium and cannot exhibit satisfactory heat exchange.
この発明は、上記した製造方法の欠点を解消す
るためになされたものであつて、スリーブに挿入
したチユーブ束の加熱融着処理において、チユー
ブの潰れ現象を起すおそれのない合成樹脂チユー
ブ束の製造方法を提供することを主たる目的とし
ているものである。 The present invention has been made in order to eliminate the drawbacks of the above-mentioned manufacturing method, and is to produce a synthetic resin tube bundle that is free from the possibility of tube collapse during heat-sealing treatment of tube bundles inserted into sleeves. Its main purpose is to provide a method.
この発明による合成樹脂チユーブ束の製造方法
は、多数の熱可塑性樹脂製チユーブを引き揃え、
その引き揃えたチユーブ束の端部分を同種材料か
らなるスリーブ内に挿入し、加熱処理ならびにチ
ユーブ内外側への圧力差処理により、チユーブ同
志およびチユーブとスリーブとを水密状に融着す
る方法において、前記スリーブとして、チユーブ
束を囲繞するスリーブの内側面が、加熱処理によ
る内径収縮量を見込んでテーパー状に拡開した円
錐面部とされているスリーブを使用し、スリーブ
内に挿入されたチユーブ束の端面およびスリーブ
の外周に加熱部材を配置して加熱処理を行うと共
にチユーブ内外側に圧力差処理を行い、チユーブ
同志およびチユーブとスリーブとを水密状に融着
することを要旨としているものである。 The method for manufacturing a synthetic resin tube bundle according to the present invention involves arranging a large number of thermoplastic resin tubes,
In this method, the end portions of the aligned tube bundle are inserted into a sleeve made of the same kind of material, and the tubes and the tubes and the sleeve are fused together in a watertight manner by heat treatment and treatment with a pressure difference between the inside and outside of the tubes. As the sleeve, a sleeve is used in which the inner surface of the sleeve that surrounds the tube bundle is a conical surface that is expanded in a tapered shape in anticipation of the amount of inner diameter shrinkage due to heat treatment, and the tube bundle inserted into the sleeve is The gist of this method is to perform heat treatment by disposing a heating member on the end face and the outer periphery of the sleeve, and to perform pressure differential treatment on the inside and outside of the tube to weld the tubes together and the tube and the sleeve in a watertight manner.
次に、この発明を、下記実施例にもとづいて詳
細に説明する。 Next, the present invention will be explained in detail based on the following examples.
第１図および第２図に示したものは、その実施
に用いた製造装置である。１は所要の径と長さに
形成された筒体、２は筒体の下端に連結されたハ
ウジング、３は筒体の上端に連結された環体、４
は半割り形座体、５は筒体の一部に設けられた吸
気口、６はハウジングの外側に設けられた環状の
バンドヒータ、７はハウジングの下端に配置され
た板状のホツトプレート、８は弗素樹脂製チユー
ブ、９はチユーブ束の端部分を把持するための四
弗化エチレン樹脂製スリーブ、１０はチユーブの
端面のシールに用いる4.6弗化樹脂製フイルム、
１１は剥離用アルミ箔製シートである。 What is shown in FIGS. 1 and 2 is the manufacturing equipment used for the implementation. 1 is a cylinder formed to the required diameter and length; 2 is a housing connected to the lower end of the cylinder; 3 is a ring body connected to the upper end of the cylinder; 4
is a half-split seat body, 5 is an intake port provided in a part of the cylinder, 6 is an annular band heater provided on the outside of the housing, 7 is a plate-shaped hot plate placed at the lower end of the housing, 8 is a fluororesin tube; 9 is a tetrafluoroethylene resin sleeve for gripping the end portion of the tube bundle; 10 is a 4.6 fluoride resin film used for sealing the end face of the tube;
11 is a sheet made of aluminum foil for peeling.
前記弗素樹脂製チユーブ８は、内径３mm、外径
４mmのチユーブが選定され、その本数は、スリー
ブ内に六角形に充填されるように、37本としてあ
る。 The fluororesin tubes 8 are selected to have an inner diameter of 3 mm and an outer diameter of 4 mm, and the number of tubes is 37 so that they are filled in a hexagonal shape within the sleeve.
前記四弗化エチレン樹脂製スリーブ９は、外径
49mm、内径28mm→30mm、高さ85mmで、テーパー角
は約1.0度、内径28mmの横断面における全チユー
ブとの空隙部は約24.5％となつている。 The sleeve 9 made of tetrafluoroethylene resin has an outer diameter of
49mm, inner diameter 28mm → 30mm, height 85mm, taper angle is approximately 1.0 degrees, and the gap between the entire tube in the cross section of 28mm inner diameter is approximately 24.5%.
チユーブ束の製造手順
(1) 装置全体の清浄、環体３と半割り形座体４の
接合面にシリコングリースを塗布し、環体３の
内面にはパツキング（図示してない）を施し、
レンチで締付け固定する。Tube bundle manufacturing procedure (1) Clean the entire device, apply silicone grease to the joint surfaces of the ring body 3 and the half-split seat body 4, and apply packing (not shown) to the inner surface of the ring body 3.
Tighten and secure with a wrench.
(2) チユーブ８およびスリーブ９は、有機物等の
異物が付着していると融着時に燃焼し、チユー
ブ、スリーブの融着が良好にできなくなるの
で、洗浄剤にて十分に清浄する。(2) If foreign substances such as organic matter adhere to the tube 8 and sleeve 9, they will burn during fusion and the tube and sleeve will not be properly fused, so thoroughly clean them with a cleaning agent.
(3) チユーブ37本を束ね、ハウジング２の端面部
位より環体３の存する部位にマーキングを施
し、その箇所に２液型シーラントを各チユーブ
にゆきわたるように塗布（塗布巾は30〜40mm）
する。(3) Bundle 37 tubes, mark the area where the ring body 3 is located from the end face of the housing 2, and apply two-component sealant to that area so that it spreads over each tube (application width is 30 to 40 mm).
do.
(4) 環体３側よりチユーブ束を挿入し、ハウジン
グ２の端面部位より20〜30mmを突出させてお
く。(4) Insert the tube bundle from the ring body 3 side so that it protrudes 20 to 30 mm from the end surface of the housing 2.
(5) そのあと直ちに、２液型シーラントを半割り
形座体４の凹部４ａに注入し、その際、半割り
形座体４の目地部およびチユーブ束の周囲にも
シーラントを注入する。(5) Immediately thereafter, a two-component sealant is injected into the recess 4a of the half-split seat body 4, and at this time, the sealant is also injected into the joints of the half-split seat body 4 and around the tube bundle.
(6) 前記シーラントの硬化後、ハウジング２を取
外し、スリーブ９をチユーブ束に挿入させ、し
かるのちに再度ハウジングを取り付け、ハウジ
ングから突出するチユーブをハウジング端面に
合わせて切断する。(6) After the sealant has hardened, the housing 2 is removed, the sleeve 9 is inserted into the tube bundle, the housing is then reattached, and the tube protruding from the housing is cut to match the end face of the housing.
(7) 前記ハウジング２の外径に見合つた径寸法を
有する4.6弗化樹脂製フイルム１０をチユーブ
束切断面に当て付け、それが融着処理後の脱型
時にホツトプレート７との融着を防ぎ、剥離性
を良くするため、フイルム１０の外側を0.05mm
のアルミ箔製剥離用シート１１で覆い包む。(7) A 4.6 fluoride resin film 10 having a diameter corresponding to the outer diameter of the housing 2 is applied to the cut surface of the tube bundle, so that it can be fused with the hot plate 7 during demolding after the fusion process. To prevent this and improve peelability, the outside of the film 10 is 0.05mm thick.
Cover and wrap with aluminum foil release sheet 11.
(8) 装置をホツトプレート７上に固定し、ホツト
プレート７、バンドヒータ６に温度制御用熱電
対をそれぞれ取付け、筒体１の吸気口５に真空
ポンプ（図示してない）のホースを連結する。(8) Fix the device on the hot plate 7, attach temperature control thermocouples to the hot plate 7 and band heater 6, and connect the hose of a vacuum pump (not shown) to the intake port 5 of the cylinder 1. do.
(9) 前記バンドヒータ６およびホツトプレート７
の温度制御、真空ポンプの制御を下記の如く行
う。(9) The band heater 6 and the hot plate 7
The temperature control and the vacuum pump are controlled as follows.
〔1〕 バンドヒータ６およびホツトプレート７
により加熱昇温（300℃、30分）を行う。 [1] Band heater 6 and hot plate 7
Heat and raise temperature (300℃, 30 minutes).
〔2〕 融着部分（チユーブおよびスリーブ）の
温度均一化（30分）を図る。 [2] Equalize the temperature of the fused parts (tube and sleeve) (30 minutes).
〔3〕 ホツトプレートを300℃より370℃まで５
分で昇温させ、ハウジング〜スリーブ、スリ
ーブ〜チユーブの全端面部分を、フイルム１
０と共同して熱シールし、次に５分間で300
℃まで降温させ、その降温時310℃にて、真
空ポンプを作動させ、筒体１内を120〜140mm
Hgに減圧する。 [3] Heat the hot plate from 300℃ to 370℃ 5
The temperature was raised for 1 minute, and the film 1
Heat seal with 0 and then 300 for 5 minutes
℃, and when the temperature drops to 310℃, operate the vacuum pump to vacuum the inside of the cylinder 1 by 120 to 140mm.
Vacuum to Hg.
〔4〕 ホツトプレートにより、前記端面部分を
300℃に保温する。300℃より高い温度では、
融着部分が長くなり、材料の損失を招く。ま
た300℃より低い温度では、スリーブの収縮
により、ハウジングとの間に隙間ができ、安
定した減圧度の保持がむづかしくなる。 [4] Using a hot plate, the end surface portion is
Keep warm at 300℃. At temperatures higher than 300℃,
The fused portion becomes longer, leading to material loss. Furthermore, at temperatures lower than 300°C, the sleeve shrinks, creating a gap between it and the housing, making it difficult to maintain a stable degree of vacuum.
〔5〕 バンドヒータを320℃に昇温（30分）し、
チユーブ同志を融着させる。 [5] Raise the temperature of the band heater to 320℃ (30 minutes),
Fusing Comrade Tube.
〔6〕 バンドヒータを350℃に昇温（15分）し、
チユーブスリーブとを融着させる。 [6] Raise the temperature of the band heater to 350℃ (15 minutes),
Fuse with the tube sleeve.
〔7〕 前記融着処理のあと、ホツトプレート、
バンドヒータへの給電を停めて冷却区間に入
る。この冷却区間において、バンドヒータの
温度が180℃に降下したところで、真空ポン
プを停止し、その後自然冷却する。 [7] After the fusion treatment, a hot plate,
Stop the power supply to the band heater and enter the cooling section. In this cooling section, when the temperature of the band heater drops to 180°C, the vacuum pump is stopped, and then natural cooling is performed.
〔8〕 冷却後、脱型を行う。 [8] After cooling, demold.
〔9〕 前記〔１〕〜〔８〕でチユーブ束の一端
面の融着が終了したあと、前記と同様な手順
で、チユーブ束の他端面の融着を行う。融着
後のチユーブ束の融着端部は、その端面より
10mm程度切断し、融着されたチユーブの孔を
全て断面に出しておく。 [9] After completing the fusion of one end face of the tube bundle in [1] to [8] above, the other end face of the tube bundle is fused in the same procedure as above. The fused end of the tube bundle after fusion should be
Cut about 10mm and expose all the holes of the fused tube in the cross section.
前記実施例によつて得られたチユーブ束を観察
したところ、スリーブ内の全てのチユーブはほゞ
ハニカム形状に均一化され、かつチユーブ同志
間、チユーブとスリーブ間は密に融着され、スリ
ーブ内の全チユーブは潰れ現象がなく、良好な状
態に保持されていることが認められた。 When the tube bundle obtained in the above embodiment was observed, all the tubes in the sleeve were uniform in a substantially honeycomb shape, and the tubes were closely fused together and the tubes and the sleeve were tightly fused, and the tubes in the sleeve were closely fused. It was observed that all the tubes had no collapse phenomenon and were maintained in good condition.
このように、スリーブ内のチユーブへの加熱処
理において、チユーブに潰れ現象が発生しないの
は、チユーブを把持するスリーブの内側面が、熱
処理時の内径収縮量を見込んでテーパー状に拡開
した円錐面に形成されていることに因るものであ
る。 In this way, the reason why the tube does not collapse during heat treatment on the tube inside the sleeve is that the inner surface of the sleeve that grips the tube is a tapered cone that expands in anticipation of the amount of inner diameter shrinkage during heat treatment. This is due to the fact that it is formed on a surface.
上記テーパー付きスリーブにチユーブを把持す
る方法に対し、テーパーのないスリーブ（内径28
mm）を用いて前記実施例と同様な手順で製造した
チユーブ束にあつては、スリーブ内面に接するチ
ユーブに潰れ現象が発生していることが認められ
た。 In contrast to the above method of gripping the tube with a tapered sleeve, a non-tapered sleeve (inner diameter 28
In the case of tube bundles manufactured using the same procedure as in the above-mentioned example using the tubes (mm), it was observed that the tubes in contact with the inner surface of the sleeve were crushed.
また、テーパーがなく、単に収縮量を見込んだ
内径寸法に形成したスリーブを用いても製造可能
であるが、加熱融着前は、チユーブ束の径より大
きいので、挿入時のチユーブの片寄り、チユーブ
間隙の増大などにより、チユーブ同志の融着が不
完全となり、均一性に欠け、未融着あるいは潰れ
の発生原因となることも確認された。 In addition, it is possible to manufacture the sleeve by simply forming the inner diameter to take into account the amount of shrinkage without having a taper, but since the diameter is larger than the diameter of the tube bundle before heat welding, It was also confirmed that due to an increase in the tube gap, etc., the tubes became incompletely fused together, resulting in lack of uniformity, leading to unfused bonding or collapse.
しかし、第３図に示すように、スリーブ内側面
のうち、その上部に、チユーブ束の径に見合つた
内径をもつ円筒面部９ｂとなし、その円筒面部に
続いてテーパー円錐面部９ａを形成したスリーブ
の使用によれば、加熱融着前のチユーブ束の安定
保持が得られるから、円錐面部９ａでの加熱融着
の均一性がさらに高められることも確められた。 However, as shown in FIG. 3, the inner surface of the sleeve has a cylindrical surface portion 9b having an inner diameter commensurate with the diameter of the tube bundle on the upper portion thereof, and a tapered conical surface portion 9a is formed following the cylindrical surface portion. It has also been confirmed that by using this method, the tube bundle before heat fusion can be stably held, so that the uniformity of heat fusion at the conical surface portion 9a can be further improved.
前記チユーブ束の製造に使用するスリーブの長
さは、20〜100mmとし、円錐面部のテーパー角は
0.3〜10゜としたものが好ましい。また円錐面部の
小径側はチユーブ束に見合つた径とし、大径側は
それより４〜14％大きい径とするのがよい。それ
以上大きくなると、チユーブ束とのあいだ不融着
部分が発生するので、好ましくない。 The length of the sleeve used to manufacture the tube bundle is 20 to 100 mm, and the taper angle of the conical surface is
Preferably, the angle is 0.3 to 10°. Further, it is preferable that the small diameter side of the conical surface portion has a diameter commensurate with the tube bundle, and the large diameter side has a diameter that is 4 to 14% larger than that. If it becomes larger than this, an unfused portion will occur between the tube bundle and this is not preferable.
前記チユーブ８に使用する熱可塑性樹脂として
は、四弗化エチレン−六弗化プロピレン共重合樹
脂や四弗化エチレン−パーフルオロアルキルビニ
ルエーテル共重合樹脂などを使用することができ
る。 As the thermoplastic resin used for the tube 8, a tetrafluoroethylene-hexafluoropropylene copolymer resin, a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin, or the like can be used.
以上に述べたように、この発明によれば、多数
の熱可塑性樹脂製チユーブを引き揃え、その引き
揃えたチユーブ束の端部分を同種材料からなるス
リーブ内に挿入し、加熱処理ならびにチユーブ内
外側への圧力差処理により、チユーブ同志および
チユーブとスリーブとを水密状に融着する方法に
おいて、前記スリーブとして、チユーブ束を囲繞
する内側面が、加熱処理による内径収縮量を見込
んでテーパー状に拡開する円錐面部とされている
スリーブを使用し、スリーブ内に挿入したチユー
ブ束の端面部位およびスリーブの外周部位に加熱
部材を配置して加熱処理を行うと共にチユーブ内
外側への圧力差処理を行うことを特徴としている
ものであるから、チユーブに潰れがなく、しかも
チユーブ同志およびチユーブとスリーブとが均一
確実に融着するチユーブ束が容易に得られる。 As described above, according to the present invention, a large number of thermoplastic resin tubes are aligned, the end portions of the aligned tube bundle are inserted into a sleeve made of the same material, and heat treatment is performed on the inside and outside of the tubes. In the method of watertightly welding the tubes and the tube and the sleeve by applying a pressure difference treatment to the sleeve, the inner surface of the sleeve surrounding the tube bundle is expanded into a tapered shape in anticipation of the amount of inner diameter shrinkage due to the heat treatment. Using a sleeve with a conical surface that opens, a heating member is placed on the end surface of the tube bundle inserted into the sleeve and on the outer periphery of the sleeve to perform heat treatment and to create a pressure difference between the inside and outside of the tubes. Since the tubes are characterized by this, it is possible to easily obtain a tube bundle in which the tubes are not crushed and the tubes and tubes and sleeves are uniformly and reliably fused to each other.
第１図はこの発明を実施するチユーブ束製造装
置の縦断側面図、第２図および第３図はスリーブ
の縦断面図である。
１…筒体、２…ハウジング、３…環体、４…半
割り形座体、５…吸気口、６…バンドヒータ、７
…ホツトプレート、８…チユーブ、９…スリー
ブ、１０…チユーブ端面シール用フイルム、１１
…剥離用シート。
FIG. 1 is a longitudinal sectional side view of a tube bundle manufacturing apparatus embodying the present invention, and FIGS. 2 and 3 are longitudinal sectional views of a sleeve. DESCRIPTION OF SYMBOLS 1... Cylindrical body, 2... Housing, 3... Annular body, 4... Half-split seat body, 5... Inlet port, 6... Band heater, 7
...Hot plate, 8...Tube, 9...Sleeve, 10...Tube end face sealing film, 11
...Peeling sheet.
Claims (1)
その引き揃えたチユーブ束の端部分を同種材料か
らなるスリーブ内に挿入し、加熱処理ならびにチ
ユーブ内外側への圧力差処理により、チユーブ同
志およびチユーブとスリーブとを水密状に融着す
る方法において、前記スリーブとして、チユーブ
束を囲繞する内側面が、加熱処理による内径収縮
量を見込んでテーパー状に拡開する円錐面部とさ
れているスリーブを使用し、スリーブ内に挿入し
たチユーブ束の端面部位およびスリーブの外周部
位に加熱部材を配置して加熱処理を行うと共にチ
ユーブ内外側への圧力差処理を行うことを特徴と
する熱交換器用合成樹脂チユーブ束の製造方法。 ２ 前記チユーブに、四弗化エチレン−六弗化プ
ロピレン共重合樹脂、四弗化エチレン−パーフル
オロアルキルビニルエーテル共重合樹脂のいずれ
かで形成したものを使用し、スリーブに四弗化エ
チレン樹脂で形成したものを使用する特許請求の
範囲第１項記載の熱交換器用合成樹脂チユーブ束
の製造方法。 ３ 前記スリーブとして、その内側面が、スリー
ブの全長にわたる円錐面で形成されているものを
使用する特許請求の範囲第１項または第２項記載
の熱交換器用合成樹脂チユーブ束の製造方法。 ４ 前記スリーブとして、その内側面が、チユー
ブ束の径に見合つた内径をもつ円筒面部と、それ
に続く円錐面部とで形成されているものを使用す
る特許請求の範囲第１項または第２項記載の熱交
換器用合成樹脂チユーブ束の製造方法。 ５ 前記スリーブとして、円錐面部のテーパー角
度が0.3〜10゜であるものを使用する特許請求の範
囲第１項ないし第４項のいずれかに記載の熱交換
器用合成樹脂チユーブの製造方法。 ６ 前記スリーブとして、円錐面部の大径側の内
径が、小径側の内径に対して４〜14％大きくした
ものを使用する特許請求の範囲第１項ないし第４
項のいずれかに記載の熱交換器用合成樹脂チユー
ブの製造方法。[Claims] 1. A large number of thermoplastic resin tubes are aligned,
In this method, the end portions of the aligned tube bundle are inserted into a sleeve made of the same kind of material, and the tubes and the tubes and the sleeve are fused together in a watertight manner by heat treatment and treatment with a pressure difference between the inside and outside of the tubes. As the sleeve, a sleeve is used in which the inner surface surrounding the tube bundle has a conical surface that expands in a tapered shape in anticipation of the amount of inner diameter shrinkage due to heat treatment, and the end surface portion of the tube bundle inserted into the sleeve and A method for manufacturing a bundle of synthetic resin tubes for a heat exchanger, characterized in that a heating member is placed on the outer periphery of the sleeve to perform heat treatment and to apply a pressure difference between the inside and outside of the tubes. 2 The tube is made of either tetrafluoroethylene-hexafluoropropylene copolymer resin or tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin, and the sleeve is made of tetrafluoroethylene resin. A method for producing a bundle of synthetic resin tubes for a heat exchanger according to claim 1, wherein a bundle of synthetic resin tubes for a heat exchanger is used. 3. The method for producing a bundle of synthetic resin tubes for a heat exchanger according to claim 1 or 2, wherein the sleeve has an inner surface formed with a conical surface extending over the entire length of the sleeve. 4. Claim 1 or 2 uses a sleeve whose inner surface is formed of a cylindrical surface portion having an inner diameter commensurate with the diameter of the tube bundle, and a conical surface portion following the cylindrical surface portion. A method for manufacturing synthetic resin tube bundles for heat exchangers. 5. The method for manufacturing a synthetic resin tube for a heat exchanger according to any one of claims 1 to 4, wherein the sleeve has a conical surface portion with a taper angle of 0.3 to 10 degrees. 6. Claims 1 to 4, in which the inner diameter of the large diameter side of the conical surface portion is 4 to 14% larger than the inner diameter of the small diameter side is used as the sleeve.
A method for producing a synthetic resin tube for a heat exchanger according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162289A JPS6221524A (en) | 1985-07-23 | 1985-07-23 | Manufacture of synthetic resin tube bundle for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162289A JPS6221524A (en) | 1985-07-23 | 1985-07-23 | Manufacture of synthetic resin tube bundle for heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6221524A JPS6221524A (en) | 1987-01-29 |
| JPH03220B2 true JPH03220B2 (en) | 1991-01-07 |
Family
ID=15751653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60162289A Granted JPS6221524A (en) | 1985-07-23 | 1985-07-23 | Manufacture of synthetic resin tube bundle for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6221524A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10132492A (en) * | 1996-10-25 | 1998-05-22 | Mitsubishi Heavy Ind Ltd | Tube for heat exchanger |
| JP3870299B2 (en) * | 1996-12-03 | 2007-01-17 | ダイキン工業株式会社 | Method for joining and molding modified polytetrafluoroethylene molded product |
| WO1999062696A1 (en) * | 1998-06-04 | 1999-12-09 | Daikin Industries, Ltd. | Method for producing modified polytetrafluoroethylene moldings by joint molding |
| KR100567194B1 (en) | 2005-12-09 | 2006-04-03 | 주식회사 신안테크 | Method for manufacturing teflon type - heat exchanging |
| JP2008256253A (en) * | 2007-04-04 | 2008-10-23 | Toyota Motor Corp | Heat exchanger and manufacturing method of heat exchanger |
| KR102151142B1 (en) * | 2015-09-02 | 2020-09-02 | 한온시스템 주식회사 | Heat exchanger using hollow fiber and method for manufacturing the same |
-
1985
- 1985-07-23 JP JP60162289A patent/JPS6221524A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6221524A (en) | 1987-01-29 |
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