JP3368773B2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JP3368773B2 JP3368773B2 JP29608896A JP29608896A JP3368773B2 JP 3368773 B2 JP3368773 B2 JP 3368773B2 JP 29608896 A JP29608896 A JP 29608896A JP 29608896 A JP29608896 A JP 29608896A JP 3368773 B2 JP3368773 B2 JP 3368773B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- heat
- copper
- copper tube
- aluminum body
- 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 - Fee Related
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
- F28D7/02—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 helically coiled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- 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
- F28D7/04—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 spirally coiled
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、燃焼ガスを熱交換
して熱媒に熱を伝える熱交換器に関するものである。
【０００２】
【従来の技術】近年、ガスや石油の燃焼熱を利用した冷
媒加熱式空気調和機が実用化されている。
【０００３】以下図面を参照しながら、上述した冷媒加
熱式空気調和機の熱交換器の一例について説明する。
【０００４】図４は従来の冷媒加熱用熱交換器である。
図５は同断面図、図６は銅管固定部の断面拡大図であ
る。図４〜６において１は押し出し成形されたアルミ本
体１であり、内部にはバーナ部５の燃焼ガスから熱を吸
熱するフィン１ａを備えている。アルミ本体１の外周部
には冷媒を流すための銅管２が銅管支持部１ｂに内部か
ら拡管固定され、フィン部から吸熱された熱を、銅管内
を流れる冷媒に伝達するものである。
【０００５】
【発明が解決しようとする課題】しかしながら上記のよ
うな構成の熱交換器では、冷媒が燃焼ガスの上流側（高
温）と下流側（低温）を交互に通るため、熱損失熱が多
く効率が悪い。また構成上銅管２の部品点数（直管部・
Ｕ字管部）が多い。さらに銅管２をアルミ本体１の銅管
支持部１ｂ挿入後に密着させるため、各銅管の直管部を
すべて拡管加工する必要があり、製造工数や銅管２同士
を接続するためのロー付け工数等大きな製造コストがか
かっている。
【０００６】本発明は、上記問題点に鑑み、低コストで
熱効率の良い燃焼用熱交換器を提供するものである。
【０００７】
【課題を解決するための手段】上記課題を解決するため
の本発明は、燃焼ガスから受熱するためのフィンを内部
に有しかつ両端を解放した円筒形のアルミ本体の外周部
に熱媒を流す銅管を密着させ巻き付け、銅管の両端部を
それぞれ固定金具に溶接し、固定金具をアルミ本体にネ
ジ止め固定したものである。上記熱交換器の構成によ
り、熱交換器の効率向上とコスト合理化が実現でき、従
来の課題を解消することができる。
【０００８】
【発明の実施の形態】上記課題を解決するため本発明
は、燃焼ガスから受熱するためのフィンを内部に有しか
つ両端を解放した円筒形のアルミ本体の外周部に熱媒を
流す銅管を密着させ巻き付け、銅管の両端部をそれぞれ
固定金具に溶接し、固定金具をアルミ本体にネジ止め固
定したものである。
【０００９】また本発明は、燃焼ガスからの受熱するた
めのフィンを内部に有しかつ両端を解放した円筒形のア
ルミ本体の外周端部に固定金具１をネジ止めし、前記固
定金具１に熱媒を流す銅管の一端（入口側）を溶接し、
前記アルミ本体を回転させ銅管をアルミ本体の外周部に
密着させながら巻き付け、他端部（出口側）まで巻き、
アルミ本体外周部の他端部に固定金具２をネジ止めし、
固定金具２と銅管を溶接固定した後、銅管出口端を切断
し熱交換器を製造するものである。
【００１０】
【実施例】以下本発明の実施例の熱交換器について図面
を参照しながら説明する。図において従来例と同一のも
のは同一番号を付与し、説明を省略する。
【００１１】（実施例１）
図１において（ａ）は側面図、（ｂ）は正面図で、１は
内面に燃焼ガスの熱を吸収するためのフィンを有し、押
し出し成形された円筒形のアルミ本体、２は前記アルミ
本体１の外周部に密着し巻き付けられアルミ本体の熱を
冷媒に伝える銅管、３および４は銅管の入口側および出
口側端部とアルミ本体を固定する銅金具である。銅金具
３・４はアルミ本体の外周部とはネジ止めされ、銅管と
はロー付けにより固定され、銅管２がゆるまないよう固
定している。５は燃焼により燃焼ガスを発生するバーナ
部である。
【００１２】上記構成において、バーナ５で発生した燃
焼ガスは、アルミ本体１内部に流入し、燃焼熱はフィン
部１ａからアルミ本体１に伝熱される。銅管２には燃焼
ガスの高温側（正面図の右側）より冷媒が流入し吸熱し
ながら低温側の燃焼ガス下流側（左側）出口部へと流れ
る。
【００１３】上記実施例より明らかなように、本熱交換
器は冷媒が熱交換器の高温部から低温部に順次流れてい
くため、従来例に示す熱交換器より熱損失が小さく、熱
効率が大幅に向上するとともに、銅管の部品点数が大幅
に削減（１点でよい）され、また銅管をアルミ本体に固
定する加工工数も大幅に削減可能となり、大幅なコスト
合理化を可能にする優れた効果を有するものである。
【００１４】また、銅管内を流れる熱媒は、冷媒の他に
水・不凍液等でも同等の効果を得ることができる。
【００１５】図３は、本発明の熱交換器の製造方法を示
したもので、まずフィンを内部に有する円筒形の押し出
し成形されたアルミ本体１の外周部の端に銅金具３をネ
ジ止めする。アルミ本体１と銅金具の間に銅管２を差込
み、ロー付けを行い銅管の一端を固定する、次に銅管２
に張力を加えながらアルミ本体１の円筒軸を中心にアル
ミ本体１を回転させ銅管を円筒部の外周面に密着させな
がら順次巻き付ける。そして他端部まで巻いた時点で、
多端部にも銅金具４を銅管を押さえるようにアルミ本体
１にネジ止めし、その後銅金具４と銅管２をロー付け
し、銅管を切断する。以上のような方法で図１に示す熱
交換器を製造するものである。
【００１６】この熱交換器の製造方法は、１本の銅管を
直接アルミ本体に巻き付けるため、従来例に示す熱交換
器のように銅管を拡管加工しアルミ本体に密着させた
り、銅管同士を繋ぐロー付けすることが不要となり、製
造工数が大幅に低減可能でコストの大幅合理化を実現で
きる。
【００１７】
【発明の効果】上記実施例から明かなように請求項１記
載の発明によれば、燃焼ガスから受熱するためのフィン
を内部に有する円筒形のアルミ本体の外周部に熱媒を流
す銅管を密着させ巻き付け、銅管の両端部をそれぞれ固
定金具に溶接し、固定金具をアルミ本体にネジ止め固定
した熱交換器を構成することにより、熱媒が高温部から
順次低温部に流れていくため、熱効率が大幅に向上する
とともに、銅管の部品点数が大幅に削減（１点でよい）
され、大幅な材料費合理化を可能にすることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for exchanging heat of a combustion gas to transfer heat to a heat medium. 2. Description of the Related Art In recent years, refrigerant-heated air conditioners utilizing combustion heat of gas or oil have been put to practical use. [0003] An example of a heat exchanger of the above-described refrigerant-heated air conditioner will be described below with reference to the drawings. FIG. 4 shows a conventional heat exchanger for heating a refrigerant.
FIG. 5 is a sectional view of the same, and FIG. 6 is an enlarged sectional view of a copper tube fixing portion. 4 to 6, reference numeral 1 denotes an extruded aluminum body 1, which is provided with fins 1 a for absorbing heat from the combustion gas of the burner 5. A copper tube 2 for flowing a coolant is fixed to the copper tube supporting portion 1b from the inside at the outer peripheral portion of the aluminum main body 1, and the heat absorbed from the fin portion is transmitted to the coolant flowing in the copper tube. . [0005] However, in the heat exchanger having the above-described structure, the refrigerant alternately flows between the upstream side (high temperature) and the downstream side (low temperature) of the combustion gas, so that the heat loss heat is reduced. Many inefficient. Also, the number of parts of the copper tube 2 (straight tube part,
U-tube section). Further, in order to make the copper tubes 2 adhere to each other after the copper tube supporting portions 1b of the aluminum main body 1 are inserted, it is necessary to expand all the straight tube portions of each copper tube, and the number of manufacturing steps and brazing for connecting the copper tubes 2 to each other are required. Large manufacturing costs such as man-hours are required. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a low cost and high heat efficiency combustion heat exchanger. SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is directed to a cylindrical aluminum body having fins for receiving heat from combustion gas therein and having both ends opened. A copper tube through which a heat medium flows is brought into close contact with and wound around, and both ends of the copper tube are welded to respective fixing brackets, and the fixing brackets are fixed to the aluminum body with screws. With the configuration of the heat exchanger, efficiency improvement and cost rationalization of the heat exchanger can be realized, and conventional problems can be solved. [0008] In order to solve the above-mentioned problems, the present invention provides a heat transfer medium on the outer periphery of a cylindrical aluminum body having fins for receiving heat from combustion gas therein and having both ends opened. The copper pipe to be flowed is closely adhered and wound, and both ends of the copper pipe are welded to fixing brackets, respectively, and the fixing brackets are fixed to the aluminum body by screws. Further, according to the present invention, a fixing member 1 is screwed to an outer peripheral end portion of a cylindrical aluminum body having fins for receiving heat from a combustion gas and open at both ends. Weld one end (inlet side) of the copper tube through which the heat medium flows,
The aluminum body is rotated and the copper tube is wound while being closely attached to the outer peripheral portion of the aluminum body, and wound to the other end (outlet side),
Screw the fixing bracket 2 to the other end of the outer periphery of the aluminum body,
After the fixing fitting 2 and the copper pipe are welded and fixed, the outlet end of the copper pipe is cut to manufacture a heat exchanger. An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, the same components as those of the conventional example are denoted by the same reference numerals, and description thereof is omitted. (Embodiment 1) In FIG. 1, (a) is a side view, (b) is a front view, and 1 has a fin for absorbing heat of a combustion gas on an inner surface, and is an extruded cylindrical shape. The aluminum body 2 is a copper tube which is wound tightly around the outer periphery of the aluminum body 1 and transfers the heat of the aluminum body to the refrigerant. The copper tubes 3 and 4 are used to fix the inlet and outlet ends of the copper tube to the aluminum body. Metal fittings. The copper fittings 3 and 4 are screwed to the outer peripheral portion of the aluminum body and fixed to the copper tube by brazing, so that the copper tube 2 is not loosened. Reference numeral 5 denotes a burner unit that generates combustion gas by combustion. In the above configuration, the combustion gas generated by the burner 5 flows into the aluminum main body 1, and the combustion heat is transferred from the fin portion 1a to the aluminum main body 1. Refrigerant flows into the copper tube 2 from the high temperature side (right side in the front view) of the combustion gas and flows to the low temperature side combustion gas downstream side (left side) outlet while absorbing heat. As is clear from the above embodiment, the heat exchanger of the present heat exchanger has a smaller heat loss and a lower heat efficiency than the heat exchanger shown in the conventional example because the refrigerant flows from the high temperature part to the low temperature part of the heat exchanger sequentially. Along with the dramatic improvement, the number of parts of the copper tube has been greatly reduced (one point is enough), and the number of processing steps for fixing the copper tube to the aluminum body can be greatly reduced. This has the effect. The same effect can be obtained by using water, antifreeze, or the like as the heat medium flowing in the copper tube in addition to the refrigerant. FIG . 3 shows a method of manufacturing a heat exchanger according to the present invention . First, a copper metal fitting 3 is screwed to an end of an outer peripheral portion of a cylindrical extruded aluminum body 1 having fins therein. I do. The copper tube 2 is inserted between the aluminum body 1 and the copper fitting, brazed and one end of the copper tube is fixed.
The aluminum tube 1 is rotated around the cylindrical axis of the aluminum tube 1 while applying tension to the copper tube, and the copper tube is sequentially wound while being in close contact with the outer peripheral surface of the cylindrical portion. And when it winds up to the other end,
The copper fitting 4 is also screwed to the aluminum body 1 so as to hold the copper pipe at the multiple ends, and then the copper fitting 4 and the copper pipe 2 are brazed to cut the copper pipe. The heat exchanger shown in FIG. 1 is manufactured by the above method. In this method of manufacturing a heat exchanger, one copper tube is directly wound around the aluminum body. Therefore, as in the heat exchanger shown in the conventional example, the copper tube is expanded and brought into close contact with the aluminum body. It is not necessary to braze the parts together, the number of manufacturing steps can be greatly reduced, and the cost can be greatly reduced. As is apparent from the above embodiment, according to the first aspect of the present invention, a heat medium is applied to the outer peripheral portion of a cylindrical aluminum body having fins for receiving heat from combustion gas inside. The flowing copper tube is closely attached and wound, and both ends of the copper tube are welded to the fixing brackets respectively, and the fixing metal is screwed and fixed to the aluminum body to form a heat exchanger. As it flows, the thermal efficiency is greatly improved and the number of parts of the copper tube is greatly reduced (one point is sufficient).
This can enable significant material cost rationalization.
【図面の簡単な説明】
【図１】（ａ）は本発明の第１の実施例を示す熱交換器
外形側面図
（ｂ）は同正面図
【図２】図２は、同銅管固定部の詳細断面図
【図３】図３は、同銅管巻き付け方法を示す構成図
【図４】図４は、従来の熱交換器の斜視図
【図５】図５は、同熱交換器の断面図
【図６】図６は、同銅管固定部の詳細断面図
【符号の説明】
１ アルミ本体
２ 銅管
３，４ 固定金具
６ ネジBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) is a heat exchanger outer side view showing a first embodiment of the present invention, FIG. 1 (b) is a front view thereof FIG. 2 FIG. FIG. 3 is a structural view showing a method of winding the same copper tube . FIG. 4 is a perspective view of a conventional heat exchanger. FIG. 5 is a perspective view of the conventional heat exchanger. [FIG. 6] FIG. 6 is a detailed sectional view of the copper tube fixing part [Description of reference numerals] 1 Aluminum body 2 Copper tubes 3, 4 Fixing bracket 6 Screw
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−102114（ＪＰ，Ａ) 特開 平８−42942（ＪＰ，Ａ) 特開 昭58−135737（ＪＰ，Ａ) 特開 平６−23454（ＪＰ，Ａ) 特開 平８−296088（ＪＰ，Ａ) 実開 昭62−136767（ＪＰ，Ｕ) 実開 昭59−52339（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 41/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-102114 (JP, A) JP-A-8-42942 (JP, A) JP-A-58-135737 (JP, A) JP-A-6-142 23454 (JP, A) JP-A-8-296088 (JP, A) JP-A 62-136767 (JP, U) JP-A 59-52339 (JP, U) (58) Fields investigated (Int. 7 , DB name) F25B 41/00
Claims (1)
部に有しかつ両端を解放した円筒形のアルミ本体の外周
部に熱媒を流す銅管を密着して巻き付け、かつ隣り合う
銅管同士が密着しており、前記銅管の両端部をそれぞれ
固定金具に溶接し、その固定金具を前記アルミ本体にネ
ジ止め固定した熱交換器。(57) [Claim 1] A copper tube for flowing a heat medium is closely attached to an outer peripheral portion of a cylindrical aluminum body having fins for receiving heat from combustion gas therein and having both ends opened. Wrap around and be next to each other
A heat exchanger in which copper tubes are in close contact with each other , both ends of the copper tubes are welded to fixing members, and the fixing members are fixed to the aluminum body by screws.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29608896A JP3368773B2 (en) | 1996-11-08 | 1996-11-08 | Heat exchanger |
| CN97121288A CN1113215C (en) | 1996-11-08 | 1997-10-30 | Heat exchanger and method of producing the same |
| KR1019970058870A KR100255472B1 (en) | 1996-11-08 | 1997-11-08 | Heat exchanger and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29608896A JP3368773B2 (en) | 1996-11-08 | 1996-11-08 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10141808A JPH10141808A (en) | 1998-05-29 |
| JP3368773B2 true JP3368773B2 (en) | 2003-01-20 |
Family
ID=17828972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29608896A Expired - Fee Related JP3368773B2 (en) | 1996-11-08 | 1996-11-08 | Heat exchanger |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3368773B2 (en) |
| KR (1) | KR100255472B1 (en) |
| CN (1) | CN1113215C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1529191B1 (en) * | 2002-08-09 | 2012-02-01 | Ashe Morris Limited | Reduced volume heat exchangers |
| CN101922792B (en) * | 2010-09-10 | 2012-02-29 | 无锡锡州机械有限公司 | Cylindrical heat exchanger |
| CN101943475B (en) * | 2010-09-28 | 2012-05-30 | 无锡锡州机械有限公司 | Combustion chamber structure for heat exchanger |
| CN104842079B (en) * | 2014-02-19 | 2018-01-09 | 李亚臣 | Cable bus opening heating collar and its application in the welding of cable bus copper pipe |
| CN107160179A (en) * | 2017-07-17 | 2017-09-15 | 安徽中佳自动化科技有限公司 | A kind of automatic machine-shaping production technology of evaporator tube |
-
1996
- 1996-11-08 JP JP29608896A patent/JP3368773B2/en not_active Expired - Fee Related
-
1997
- 1997-10-30 CN CN97121288A patent/CN1113215C/en not_active Expired - Fee Related
- 1997-11-08 KR KR1019970058870A patent/KR100255472B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1182201A (en) | 1998-05-20 |
| JPH10141808A (en) | 1998-05-29 |
| KR19980042219A (en) | 1998-08-17 |
| CN1113215C (en) | 2003-07-02 |
| KR100255472B1 (en) | 2000-05-01 |
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