JPS5818086A - Double tube type heat exchanger - Google Patents
Double tube type heat exchangerInfo
- Publication number
- JPS5818086A JPS5818086A JP11510981A JP11510981A JPS5818086A JP S5818086 A JPS5818086 A JP S5818086A JP 11510981 A JP11510981 A JP 11510981A JP 11510981 A JP11510981 A JP 11510981A JP S5818086 A JPS5818086 A JP S5818086A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- inner tube
- heat exchanger
- outer tube
- fluid passage
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/14—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically both tubes being bent
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、二重管式熱交換器に係り、内管に腐食を起し
ても、一方の流体が他方の流体に混入することを防止し
、しかも、外形寸法を小さくするのに好適な、二重管式
熱交換器の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double pipe heat exchanger, which prevents one fluid from mixing with the other fluid even if corrosion occurs in the inner pipe, and which also has a The present invention relates to a structure of a double-tube heat exchanger suitable for reducing the size of the heat exchanger.
従来の二重管式熱交換器を第１図、第２図及び第３図に
より説明する。ｌは外管でその中に内管２が挿入され、
流体通路３及び４を形成している。A conventional double tube heat exchanger will be explained with reference to FIGS. 1, 2, and 3. l is an outer tube into which inner tube 2 is inserted;
Fluid passages 3 and 4 are formed.
内管２の両端部は外管ｌの両端部の外に出ており、外管
１と内管２は、同時に数回巻いである。ま／で、５は流
体通路４へ流体を導くための導管である。Both ends of the inner tube 2 protrude from both ends of the outer tube 1, and the outer tube 1 and the inner tube 2 are wound several times at the same time. Also, 5 is a conduit for guiding fluid to the fluid passage 4.
かかる構造によれば、内管２の一部が腐食などにより孔
があいた場合、流体通路３に流れている流体と、流体通
路４に流れている流体が混り合うという欠点を持ってい
た。This structure has a drawback that if a hole is formed in a portion of the inner tube 2 due to corrosion or the like, the fluid flowing in the fluid passage 3 and the fluid flowing in the fluid passage 4 will mix.
本発明の目的は、内管の一部に腐食が生じても二つの流
体が混じり合わないようにし、しかも、外形寸法を小さ
くすることである。An object of the present invention is to prevent two fluids from mixing even if corrosion occurs in a portion of the inner tube, and to reduce the external dimensions.
すなわち、内管内側管と内管外側管の間に、管軸方向に
貫通した溝を設けることにより、たとえ内管内側管又は
内管外側管に腐食などにより孔がおいても、孔があいた
方の通路を流れている流体に、溝に沿って管軸方向に流
れ、内管端部で大気中に放出されるので、他方の流体に
混じることにガい・また・内管内側管と内管外側管全密
着加工するとき、５０工硬化を起こすが、このあと、焼
鈍を施すことによシ、曲げ加工性を良くすることができ
箋この内管を外管に挿入後、外管と同時に曲げ加工する
ことができるので、円形に数回巻くことにより、管の全
長は長くても、外形寸法は小さくすることができる。In other words, by providing a groove that penetrates in the tube axis direction between the inner tube and the outer tube, even if a hole is formed in the inner tube or the outer tube due to corrosion, it will not occur. The fluid flowing through one passage flows along the groove in the axial direction of the tube and is released into the atmosphere at the end of the inner tube. When processing the inner and outer tubes in close contact, hardening occurs for 50 hours, but after this, annealing can improve bending workability.After inserting this inner tube into the outer tube, Since the pipe can be bent at the same time, by winding it in a circle several times, the external dimensions can be reduced even if the overall length of the pipe is long.
以下、本発明の一実施例を第４図、第５図及び第６図に
より説明する。従来例と同一符号のものは同一物を示す
。１２１ｄ内管で、内面溝付管１２ａの中に裸管１２ｂ
ｉ挿入し、引き抜き加工を行って、内面溝付管１２ａと
裸管１２ｂとの間に、密着部分１２ｃと空間部分１２ｄ
を形成している。An embodiment of the present invention will be described below with reference to FIGS. 4, 5, and 6. Components with the same reference numerals as those in the conventional example indicate the same components. 121d is an inner tube, and a bare tube 12b is inside the inner grooved tube 12a.
i is inserted and pulled out to form a close contact portion 12c and a space portion 12d between the internally grooved tube 12a and the bare tube 12b.
is formed.
この空間部分１２ｄＨ管軸方向に走っており、内管１２
の両端部１２ｅ及び１２ｆにて大気と通じている。この
内管は、引き抜き加工時、加工硬化を起すので、引き抜
き加工後、焼鈍してから、外管ｌの中に挿入し、外管１
と内管１２に同時に数回巻く。This space portion 12dH runs in the tube axis direction, and the inner tube 12
It communicates with the atmosphere at both ends 12e and 12f. This inner tube undergoes work hardening during drawing, so after drawing, it is annealed and then inserted into the outer tube 1.
and the inner tube 12 several times at the same time.
かかる構造の二重管式熱交換器・においては、内面溝付
管１２ａの一部が腐食などにより、流体通路４の方から
除々に薄くなった場合でも、この腐食が空間部分１２ｄ
に達すると、流体通路３に流れている流体は、空間部分
１２ｄに入り込み、空間部分１２ｄに″沿って管軸方向
に流れ、内管の端部１２ｅ及び１２ｆから大気中に放出
される。したがって、流体通路４に流れる流体は、流体
通路３の中には入シ込まず、二つの流体が混じり合うこ
とはない。In the double-tube heat exchanger having such a structure, even if a portion of the internally grooved tube 12a becomes gradually thinner from the fluid passage 4 due to corrosion, this corrosion will cause the space portion 12d to become thinner.
When reaching , the fluid flowing in the fluid passage 3 enters the space portion 12d, flows along the space portion 12d in the tube axis direction, and is discharged into the atmosphere from the ends 12e and 12f of the inner tube. , the fluid flowing into the fluid passage 4 does not enter into the fluid passage 3, and the two fluids do not mix.
また、裸管１２ｂの一部が腐食などにより、流体通路３
の方から除々に薄くなった場合でも、この腐食が空間部
分１２ｄに達すると、流体通路３に流れている流体は、
空間部分１２ｄに沿って管軸方向に流れ、内管の端部１
２ｅ及び１２ｆから大気中に放出され〜、やはり、二つ
の流体は混じり合うことはない。In addition, due to corrosion etc. of a part of the bare pipe 12b, the fluid passage 3
Even if the corrosion gradually becomes thinner from the direction of
It flows in the tube axis direction along the space portion 12d, and the end 1 of the inner tube
2e and 12f into the atmosphere~, again the two fluids do not mix.
また、内管１２は、内面溝付管１２ａと裸管１２ｂ’（
ｚ密着させる引き抜き加工時、加工硬化を起しているが
、焼鈍加工を施すことにより、曲げ加工性を良クシ、外
管１に挿入後、両者を同時に数回巻くことができるので
、管の全長が長くなる場合でも、外形寸法は小さくする
ことができるりなお、本実施例では、内面溝付管の中に
裸管全挿入したが、第７図の如く、裸管６の中に外面溝
付管７ｔ−挿入しても同様の効果が得られる。In addition, the inner tube 12 includes an inner grooved tube 12a and a bare tube 12b' (
Work hardening occurs during the drawing process to bring them into close contact, but annealing improves the bending workability, and after inserting into the outer tube 1, both can be wound several times at the same time. Even if the overall length is long, the external dimensions can be made smaller. In this example, the bare tube was fully inserted into the inner grooved tube, but as shown in FIG. A similar effect can be obtained by inserting the grooved tube 7t.
また、内管の流体通路３側または流体通路４側にフィン
を設けた二重管式熱交換器においても、本発明を適用す
ることができる。Further, the present invention can also be applied to a double pipe heat exchanger in which fins are provided on the fluid passage 3 side or the fluid passage 4 side of the inner tube.
本発明によれば、内管が腐食を起しても、−万の流体が
他方の流体に混入することはなく、シかも、密着加工後
、内管を焼鈍しているので、外管に挿入後、曲げ加工を
することができ、熱交換器の外形寸法を小さくできる効
果がある。According to the present invention, even if the inner tube corrodes, one fluid will not mix with the other fluid, and since the inner tube is annealed after contact processing, the outer tube will not be affected. After insertion, it can be bent, which has the effect of reducing the external dimensions of the heat exchanger.
第１図は従来の二重管式熱交換器の外観図、第２図は従
来の二重管式熱交換器の断面斜視図、第３図は第１図の
Ａ−Ａｌｆｒ面図であり、第４図は本発明の二重管式熱
交換器の外観図、第５図は本発明の二重管式熱交換器の
断面斜視図、第６図は第４図のＢ−Ｂ断面図、第７図は
本発明の他の実施例の二重管式熱交換器の断面図である
。
１・・・外管、２．１２・・・内管、１２ａ・・・内面
溝付管、１２ｂ・・・裸管、１２ｄ・・・空間部分。
昭和５６年特許願第、１１５１０９ 号発明の名 称
二重管式熱交換器
補正をする者
名 称 （５１０）株式会社 日 立 製 作 折代
表 名 三 １） 勝 茂代 理
人
補正の対象 願書および明細書の発明の名称の欄と明細
書会欄と＠面。
「二重管式熱交換器」とあるのを「熱交換器の製作方法
」と別紙明細書の通り補正します。
２、明細書全欄を別紙の通り補正します。
６、図面中、第１図、第４図、第５図、第６図、第７図
を別紙の通り補正します。
明 細 書
発明の名称 熱交換器の製作方法
特許請求の範囲
１、内管内側管（１２ｂ）と内管外側管（１２ａ）とを
密着加工してこの両者（１２ｂ）・（１２ａ）の間に密
着部分（１２Ｃ）と管軸方向に貫通した空間部分（１２
ｄ）を設けた後、この内管（１２）を焼鈍すると共に、
この内管（１２）を外管（１１）の中に内管（１２）の
端部（１２ｇ）が外に出るように挿入し、この内管（１
２）と外管（１１）とを−緒に曲げ加工したことを特徴
とする熱交換器の製作方法。
２、内管外側管として内面溝付管（１２ａ）を使用した
特許請求の範囲第１項記載の熱交換器の１作方法。
３、内管内側管として外面溝付管（２２ｂ）を使用した
特許請求の範囲第１項記載の熱交換器の製作方法。
発明の詳細な説明
本発明は冷凍サイクル等に用いられる熱交換器）製作方
法に関するものである。
従来の熱交換器を第１図、第２図及び第３図により説明
する。冷凍サイクルに用いられ熱交換器６は外管１の中
に内管２を挿入して構成している。
内管２の中に形成される流体通路３は水（例えば飲料水
）が流れる。外管１と内管２との間に形成される流体通
路４は冷媒（例えばフレオンガス）が流れる。両流体通
路３・４間を流れる水と冷媒は内管２を介して熱交換す
る。内管２の両端部２ａは外管ｌの両端部１ａの外に出
ている。外管１と内管２は一緒に数回巻いてコンパクト
な熱交換器６を製作する。また、流体通路４へ流体を導
くための導管５を有している。
かかる熱交換器６によれば、内管２の一部が腐食などに
より孔があいた場合、流体通路３に流れている流体と、
流体通路４に流れている流体が混り合うという欠啼を持
っていた。
本発明の目的は、内管の一部に腐食が生じても二つの流
体が混じり合わないようにし、しかも。
外形寸法を小さくすることである。
本発明は内管内側管と内管外側管の間に密着部分と管軸
方向に貫通した空間部分を設けた後、焼鈍すると共に、
この内管を外管に内管の端部が外へ出るように挿入し、
内管と外管とを一緒に曲げ加工熱交換器の製作方法を提
供することにより。
上記目的を達成せんとするものである。
以下、本発明の一実施例を第４図、第５図及び第６図に
より説明する。給湯加熱装置の冷凍サイクル等に用いら
れる熱交換器１６は外管１１の中に内管１，２を挿入し
て構成している。内管１２の中心部に形成される流体通
路１３は水（例えば飲料水）が流れる。外管１１と内管
１２との間に形成される流体通路１４は冷媒（例えばフ
ロンガス）が流れる。両流体通路１３・１４間を流れる
水と冷媒は内管１２を介して熱交換する。内管１２は内
管外側管を構成する内面溝付管１２ａの中に内管内側管
を構成する裸管１２ｂを挿入した後、引き抜き加工を行
って、内面溝付管１２ａと裸管１２ｂとの間に５密着部
分１２Ｃと空間部分１２ｄを形成する。内管１２の両端
部１２ｇは外管ｌ］の両端部１１ａの外に出ている。前
記空間部分１２ｄは管軸方向に走っており５内管１２の
両端部１２ｅ及び１２ｆにて大気と通じている。この内
管１２は、引き抜き加工時に加工硬化を起すので、引き
抜き加工後、焼鈍してから外管１１の中に挿入し、外管
１１と内管１２を一緒に数回巻いてコンパクトな熱交換
器を製作する。また、流体通路１４へ流体を導くための
導管１５を有して（する。
かかる熱交換器においては、内面溝付管１２ａの一部が
腐食などにより、流体通路１４の方から徐々に薄くなっ
た場合でも、この腐食が空間部分１２ｄに達すると、流
体通路１４．に流れている流体は、空間部分１２ｄに入
り込み、空間部分１２ｄに沿って管軸方向に流れ、内管
１２の端部１２ｅ及び１２ｆから大気中に放出される。
したがって、流体通路１３に流れる流体は、流体通路１
４の中には入り込まず、二つの流体が混じり合うことは
ない。また、裸管１２ｂの一部が腐食などにより、流体
通路１３の方から徐々に薄くなった場合でも、この腐食
が空間部分１２ｄに達すると、流体通路啼３に流れてい
る流体は、空間部分１２ｄ Ｇｎ沿って管軸方向に流−
れ、内管１２の端部１２ｅ及び１２ｆから大気中に放出
され、やはり、二つの流体は混じり合うことはない。尚
、内管１２の端部１２ｅ及び１２ｆから大気中に放出さ
れる流体を検知することによって内管１２の腐食を容易
に知ることができる。
一方、内管１２は、内面溝付管１２ａと裸管１２ｂを密
着させる引き抜き加工時に加工硬化を起しているが、焼
鈍加工を施すことにより、曲げ加工性を良くし、外管ｌ
に挿入後両者を一緒に数回巻くことができるので、熱交
換器１６の全長が長くなる場合でも、外形寸法は小さく
することができる。
なお、第７図の如く、内管２２の裸管２２ａの中に外面
溝付管２２ｂを挿入して本実施例と同様に熱交換２６を
製作しても良い。尚、第７図における２２ａは外管であ
る。
また、内管１２の流体通路１３側または流体通路１４側
にフィンを設けても良い。
図面の簡単な説明
第１図は従来の熱交換器の外観図、第２図は第１図の■
−■断面斜視図、第３図は第１図の■−■断面図、第４
図は本発明の熱交換器の外観図。
第５図は第４図の■−■断面斜視図、第６図は第４図の
Ｖｌ−Ｖｌ断面図、第７図は本発明の他の実施例の熱交
換器の断面図である。
１１・・・外管１．１２・・・内管、１２ａ・・・内管
外側管（内面溝付管）、１２ｂ・・・内管内側管（裸管
）、１２Ｃ・・・密着部分、１２ｄ・・・空間部分、１
３・１４・・・流体通路、１５・・・導管、１６・・・
熱交換器。
第１ 図
第４図
第６図
１７図 ゛Figure 1 is an external view of a conventional double-tube heat exchanger, Figure 2 is a cross-sectional perspective view of a conventional double-tube heat exchanger, and Figure 3 is an A-Alfr side view of Figure 1. , FIG. 4 is an external view of the double tube heat exchanger of the present invention, FIG. 5 is a cross-sectional perspective view of the double tube heat exchanger of the present invention, and FIG. 6 is a BB cross section of FIG. 4. 7 are sectional views of a double tube heat exchanger according to another embodiment of the present invention. 1... Outer pipe, 2.12... Inner pipe, 12a... Inner grooved tube, 12b... Bare tube, 12d... Space portion. 1981 Patent Application No. 115109 Name of the Invention Name of Person Who Corrects Double-Pipe Heat Exchanger Name (510) Manufactured by Hitachi Co., Ltd. Representative Name 3 1) Osamu Katsu Shigeyo
Target of person's amendment The field of the title of the invention, the field of the specification, and the @ side of the application and specification. The phrase "double tube heat exchanger" has been corrected to "method for manufacturing heat exchanger" as per the attached specification. 2. Correct all columns of the statement as shown in the attached sheet. 6. In the drawings, Figure 1, Figure 4, Figure 5, Figure 6, and Figure 7 will be corrected as shown in the attached sheet. Description Title of the invention Method for manufacturing a heat exchanger Claim 1: An inner tube (12b) and an outer tube (12a) are processed to be in close contact between the two (12b) and (12a). The part (12C) in close contact with the tube and the space part (12C) penetrating in the tube axis direction.
d), annealing this inner tube (12) and
Insert this inner tube (12) into the outer tube (11) so that the end (12g) of the inner tube (12) comes out.
2) and an outer tube (11) are bent together. 2. A method for manufacturing a heat exchanger according to claim 1, in which an inner grooved tube (12a) is used as the inner tube and the outer tube. 3. The method for manufacturing a heat exchanger according to claim 1, in which an outer grooved tube (22b) is used as the inner tube. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a heat exchanger used in a refrigeration cycle or the like. A conventional heat exchanger will be explained with reference to FIGS. 1, 2, and 3. A heat exchanger 6 used in a refrigeration cycle is constructed by inserting an inner tube 2 into an outer tube 1. A fluid passage 3 formed in the inner tube 2 allows water (for example drinking water) to flow therethrough. A refrigerant (for example, Freon gas) flows through a fluid passage 4 formed between the outer tube 1 and the inner tube 2. The water and refrigerant flowing between both fluid passages 3 and 4 exchange heat through the inner tube 2. Both ends 2a of the inner tube 2 protrude from both ends 1a of the outer tube 1. The outer tube 1 and the inner tube 2 are rolled together several times to produce a compact heat exchanger 6. It also has a conduit 5 for guiding fluid to the fluid passage 4. According to such a heat exchanger 6, when a part of the inner tube 2 has a hole due to corrosion or the like, the fluid flowing in the fluid passage 3 and
It has a drawback that the fluids flowing in the fluid passage 4 mix. An object of the present invention is to prevent two fluids from mixing even if corrosion occurs in a part of the inner pipe. The objective is to reduce the external dimensions. In the present invention, after providing a close contact portion and a space portion penetrating in the tube axis direction between the inner tube and the outer tube, annealing is performed, and
Insert this inner tube into the outer tube so that the end of the inner tube comes out,
By providing a method for manufacturing a heat exchanger by bending an inner tube and an outer tube together. The aim is to achieve the above objectives. An embodiment of the present invention will be described below with reference to FIGS. 4, 5, and 6. A heat exchanger 16 used in a refrigeration cycle of a hot water supply heating device, etc. is constructed by inserting inner tubes 1 and 2 into an outer tube 11. A fluid passage 13 formed in the center of the inner tube 12 allows water (for example, drinking water) to flow therethrough. A refrigerant (eg, fluorocarbon gas) flows through a fluid passage 14 formed between the outer tube 11 and the inner tube 12. The water and refrigerant flowing between both fluid passages 13 and 14 exchange heat via the inner pipe 12. The inner tube 12 is formed by inserting the bare tube 12b constituting the inner inner tube into the inner grooved tube 12a constituting the inner outer tube, and then drawing it out to form the inner grooved tube 12a and the bare tube 12b. A 5-contact portion 12C and a space portion 12d are formed in between. Both ends 12g of the inner tube 12 protrude from both ends 11a of the outer tube 1. The space portion 12d runs in the tube axis direction and communicates with the atmosphere at both ends 12e and 12f of the inner tube 12. This inner tube 12 undergoes work hardening during drawing, so after drawing, it is annealed and then inserted into the outer tube 11, and the outer tube 11 and inner tube 12 are wound together several times to create a compact heat exchanger. Make a vessel. The heat exchanger also has a conduit 15 for guiding fluid to the fluid passage 14. In such a heat exchanger, a part of the inner grooved tube 12a becomes gradually thinner from the fluid passage 14 due to corrosion or the like. Even in such a case, when this corrosion reaches the space portion 12d, the fluid flowing in the fluid passage 14 enters the space portion 12d, flows along the space portion 12d in the tube axis direction, and flows toward the end portion 12e of the inner tube 12. and 12f. Therefore, the fluid flowing into the fluid passage 13 is discharged into the atmosphere from the fluid passage 1
4 and the two fluids will not mix. Further, even if a part of the bare pipe 12b gradually becomes thinner from the fluid passage 13 due to corrosion, if this corrosion reaches the space 12d, the fluid flowing into the fluid passage 3 will be absorbed into the space. 12d Flow in the tube axis direction along Gn-
The fluids are then discharged into the atmosphere from the ends 12e and 12f of the inner tube 12, and again, the two fluids do not mix. Note that corrosion of the inner tube 12 can be easily detected by detecting fluid released into the atmosphere from the ends 12e and 12f of the inner tube 12. On the other hand, the inner tube 12 undergoes work hardening during the drawing process that brings the inner grooved tube 12a and the bare tube 12b into close contact, but by annealing it, the bending workability is improved and the outer tube
Since both can be wound together several times after being inserted into the heat exchanger 16, the external dimensions can be reduced even if the overall length of the heat exchanger 16 becomes long. Incidentally, as shown in FIG. 7, the heat exchanger 26 may be manufactured in the same manner as in this embodiment by inserting an outer grooved tube 22b into the bare tube 22a of the inner tube 22. In addition, 22a in FIG. 7 is an outer tube. Further, fins may be provided on the fluid passage 13 side or the fluid passage 14 side of the inner tube 12. Brief explanation of the drawings Figure 1 is an external view of a conventional heat exchanger, and Figure 2 is the
-■ Cross-sectional perspective view, Figure 3 is a ■-■ cross-sectional view of Figure 1, Figure 4 is a cross-sectional view of Figure 1.
The figure is an external view of the heat exchanger of the present invention. 5 is a perspective cross-sectional view taken along the line ■--■ in FIG. 4, FIG. 6 is a cross-sectional view taken along the line Vl--Vl in FIG. 4, and FIG. 7 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention. 11...Outer tube 1.12...Inner tube, 12a...Inner tube outer tube (inner grooved tube), 12b...Inner tube inner tube (bare tube), 12C...Close part, 12d...Space part, 1
3.14...Fluid passage, 15...Conduit, 16...
Heat exchanger. Figure 1 Figure 4 Figure 6 Figure 17
Claims (1)
、外管と内管のすき間の流体通路を構成して成る二重管
式熱交換器において、内管が、内管内側管と内管外側管
より成り、両者を密着加工してこの両者の間に、管軸方
向に貫通した溝と密着面を設け、この内管を焼鈍して、
外管の中に挿入し、内管と外管を同時に曲げ加工したこ
とを特徴とする二重管式熱交換器。 ２、内管外側管として内面溝付管を使用した特許請求の
範囲第１項記載の二重管式熱交換器。 ３、内管内側管として外面溝付管を使用した特許請求の
範囲第１項記載の二重管式熱交換器。[Claims] 1. In a double-tube heat exchanger in which an inner tube is inserted into an outer tube to form a fluid passage within the inner tube and a fluid passage between the outer tube and the inner tube. , the inner tube is made up of an inner inner tube and an outer tube, the two are machined in close contact, a groove and a contact surface are provided between the two that penetrate in the tube axis direction, and the inner tube is annealed.
A double-tube heat exchanger characterized by being inserted into an outer tube and having the inner tube and outer tube bent at the same time. 2. The double-tube heat exchanger according to claim 1, wherein an inner grooved tube is used as the inner tube and the outer tube. 3. The double-tube heat exchanger according to claim 1, wherein an outer grooved tube is used as the inner tube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11510981A JPS5818086A (en) | 1981-07-24 | 1981-07-24 | Double tube type heat exchanger |
| DE19823227619 DE3227619A1 (en) | 1981-07-24 | 1982-07-23 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11510981A JPS5818086A (en) | 1981-07-24 | 1981-07-24 | Double tube type heat exchanger |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11834082A Division JPS5824790A (en) | 1982-07-09 | 1982-07-09 | Double tube type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5818086A true JPS5818086A (en) | 1983-02-02 |
Family
ID=14654453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11510981A Pending JPS5818086A (en) | 1981-07-24 | 1981-07-24 | Double tube type heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5818086A (en) |
| DE (1) | DE3227619A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3408626A1 (en) * | 1984-03-09 | 1985-09-12 | Wieland-Werke Ag, 7900 Ulm | Wound heat exchanger, in particular for heat pumps or refrigerating plants |
| DE3701614C2 (en) * | 1987-01-21 | 1998-07-16 | Dk Kaelteanlagen Gmbh | Pipe heat exchanger |
| NO163207C (en) * | 1988-02-01 | 1990-04-25 | Shipco As | PROCEDURE FOR THE PREPARATION OF SPIRAL ROSE HEAT EXCHANGERS. |
| DE19608049A1 (en) * | 1996-03-02 | 1997-09-04 | Behr Gmbh & Co | Pipe for motor vehicle air conditioning heat transfer |
| DE10021771A1 (en) * | 2000-05-04 | 2001-11-29 | Brugg Rohrsysteme Gmbh | Tube for heat exchange purposes has double-wall inner tube, outer wall of which has spiral corrugation |
| DE102014217503A1 (en) | 2014-09-02 | 2016-03-03 | Illinois Tool Works Inc. | Dishwasher with a liquid transport line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123845A (en) * | 1974-08-20 | 1976-02-26 | Daikin Ind Ltd | NETSUKOKANKI |
| JPS5223758A (en) * | 1975-08-15 | 1977-02-22 | Hitachi Ltd | Manufacturing method of double pipe heat |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE130369C (en) * | 1900-11-26 | |||
| US804592A (en) * | 1905-01-06 | 1905-11-14 | Ferdinand Fink | Automatic hose-cleaning apparatus. |
| DE935994C (en) * | 1939-12-06 | 1955-12-01 | Robert Von Dipl-Ing Linde | Warm air generators with heating, in particular using exhaust gases from internal combustion engines |
| DE7912786U1 (en) * | 1979-05-03 | 1979-08-02 | R. & G. Schmoele Metallwerke Gmbh & Co Kg, 5750 Menden | HEAT EXCHANGER |
-
1981
- 1981-07-24 JP JP11510981A patent/JPS5818086A/en active Pending
-
1982
- 1982-07-23 DE DE19823227619 patent/DE3227619A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123845A (en) * | 1974-08-20 | 1976-02-26 | Daikin Ind Ltd | NETSUKOKANKI |
| JPS5223758A (en) * | 1975-08-15 | 1977-02-22 | Hitachi Ltd | Manufacturing method of double pipe heat |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3227619A1 (en) | 1983-02-10 |
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