JP2000146304A - Heat exchanger for recovering waste heat of hot-water supplier - Google Patents
Heat exchanger for recovering waste heat of hot-water supplierInfo
- Publication number
- JP2000146304A JP2000146304A JP10358353A JP35835398A JP2000146304A JP 2000146304 A JP2000146304 A JP 2000146304A JP 10358353 A JP10358353 A JP 10358353A JP 35835398 A JP35835398 A JP 35835398A JP 2000146304 A JP2000146304 A JP 2000146304A
- Authority
- JP
- Japan
- Prior art keywords
- tubes
- waste heat
- heat exchanger
- water
- copper
- 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.)
- Granted
Links
Classifications
-
- 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
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- 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
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
-
- 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
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、強制燃焼式の給
湯機の排気路中に組み込み、燃焼排気に含まれる廃熱の
回収を図る給湯機の廃熱回収用熱交換器に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for recovering waste heat of a water heater which is incorporated in an exhaust passage of a forced-fired water heater to recover waste heat contained in combustion exhaust gas.
【０００２】[0002]
【従来の技術】給湯機などのガス燃焼器具において、フ
ァンにより燃焼空気を供給する強制燃焼式のものが普及
している。これは、ガスバーナへ燃焼空気を強制的に供
給し、機器の高能力化と小型化とを図るものである。こ
うした強制燃焼式の給湯機において、熱交換器の下流の
排気路中に廃熱回収用熱交換器を組み込み、廃熱を回収
して熱効率の向上と排気の低温下とを図ることが提案さ
れている。2. Description of the Related Art As a gas burning appliance such as a water heater, a forced burning type in which combustion air is supplied by a fan has become widespread. This is to forcibly supply the combustion air to the gas burner to achieve higher performance and smaller size of the equipment. In such a forced-fired water heater, it has been proposed to incorporate a waste heat recovery heat exchanger in the exhaust passage downstream of the heat exchanger to recover waste heat to improve thermal efficiency and lower the exhaust gas temperature. ing.
【０００３】図４は、この廃熱回収用熱交換器を組み込
んだ給湯機の全体構成図である。この給湯機において、
燃焼空気の給気路１に、吸込口２ａから吸引した燃焼空
気を送風するファン２が取り付けられ、ガスバーナ３
は、この送風空気の一部を可燃ガスとともにバーナ体内
に吸引して燃焼する。熱交換器は、受熱管の外周に多数
のフィンを固着した交換器本体４を、内胴５の上部に載
置して構成され、内胴５の内部で燃焼室を形成するとと
もに、内胴５の冷却と交換器本体４の前段での予熱とを
図るため、内胴５の外周面に予熱管６が巻装されてい
る。そして、熱交換器から排気口９に至る排気路７中に
廃熱回収用熱交換器８が設けられている。FIG. 4 is an overall configuration diagram of a water heater incorporating the waste heat recovery heat exchanger. In this water heater,
A fan 2 for blowing the combustion air sucked from the suction port 2a is attached to a combustion air supply passage 1, and a gas burner 3 is provided.
, A part of the blast air is sucked into the burner together with the combustible gas to burn. The heat exchanger is configured by placing an exchanger body 4 having a large number of fins fixed on the outer periphery of a heat receiving tube on an upper portion of an inner body 5, forming a combustion chamber inside the inner body 5, A preheating tube 6 is wound around the outer peripheral surface of the inner body 5 in order to cool the cooling unit 5 and preheat the former stage of the exchanger body 4. A waste heat recovery heat exchanger 8 is provided in an exhaust path 7 extending from the heat exchanger to an exhaust port 9.
【０００４】この給湯機に供給される給水は、予熱管６
から交換器本体４で加熱された後に廃熱回収用熱交換器
８に至り、排気路７を通過する燃焼排気中の廃熱で再加
熱されて給湯され、一方、燃焼排気は廃熱が回収されて
低温化され、排気口９から排出される。このように、廃
熱回収用熱交換器８で燃焼排気に含まれる廃熱を回収す
ることにより、器具の熱効率の向上を図るとともに、器
具外に放出される排気を低温化することができ、二百度
以上の燃焼排気を百度以下まで低下させることが可能で
あり、省エネルギーや環境問題の観点からも有益な手段
である。[0004] Water supplied to the water heater is supplied to a preheating pipe 6.
After being heated by the exchanger body 4, it reaches the waste heat recovery heat exchanger 8, where it is heated again by the waste heat in the combustion exhaust gas passing through the exhaust passage 7 and is supplied with hot water. Then, the temperature is lowered to be discharged from the exhaust port 9. In this way, by collecting the waste heat contained in the combustion exhaust gas by the waste heat recovery heat exchanger 8, it is possible to improve the thermal efficiency of the appliance and to lower the temperature of the exhaust gas discharged outside the appliance, It is possible to reduce combustion exhaust of more than two hundred degrees to less than one hundred degrees, which is a useful means from the viewpoint of energy saving and environmental problems.
【０００５】[0005]
【発明が解決しようとする課題】こうした廃熱回収用熱
交換器８は高温の排気路７中に介設され、燃焼排気は低
温下して結露を生じ、硝酸系化合物等を含む浸食性のド
レインが廃熱回収用熱交換器８に付着し、このドレイン
は、廃熱回収用熱交換器８の底部に設けたトレイ１０で
集めて無害化処理を施す必要がある。受熱管及びフィン
の素材として熱交換器の一般的金属素材である銅材は、
このドレインに容易に浸食されるために用いることがで
きず、燃焼排気に接触して廃熱を吸収する部分には、銅
材に代わり、アルミやステンレス鋼などのドレインに対
して耐食性を持つ素材を用いることが必要とされる。し
かし、これらの代替素材は溶接による接合が困難であ
り、熱交換器の製作コストが高価になるとともに、アル
ミは、常時通水される給湯管として用いるには不適であ
るなどの課題がある。The waste heat recovery heat exchanger 8 is interposed in a high-temperature exhaust passage 7, and the combustion exhaust gas is condensed at a low temperature to generate dew condensation. The drain adheres to the waste heat recovery heat exchanger 8, and the drain needs to be collected on a tray 10 provided at the bottom of the waste heat recovery heat exchanger 8 and subjected to detoxification treatment. Copper material, which is a general metal material for heat exchangers as a material for heat receiving tubes and fins,
A material that cannot be used because it is easily eroded by this drain and that absorbs waste heat by contacting the combustion exhaust, instead of copper, is made of aluminum or stainless steel that has corrosion resistance to the drain Is required. However, these alternative materials have problems in that joining by welding is difficult, the production cost of the heat exchanger is high, and aluminum is unsuitable for use as a hot water supply pipe that constantly passes water.
【０００６】この発明は、これらの課題を解決するこを
目的とするもので、排気路７中に組み込む廃熱回収用熱
交換器８を、燃焼排気に接触する部分に耐食性の素材を
用いて形成し、ドレインによる浸食を防止するととも
に、溶接に代わる製作手段を用いて製作コストの低減を
図ることを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to solve these problems. The heat exchanger 8 for recovering waste heat incorporated in the exhaust passage 7 is formed by using a corrosion-resistant material in a portion that comes into contact with the combustion exhaust gas. It is an object of the present invention to form and prevent erosion by a drain, and to reduce manufacturing costs by using manufacturing means instead of welding.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するた
め、請求項１に記載の給湯機の廃熱回収用熱交換器は、
アルミ材の切削加工で、貫通孔の外周面に多数のフィン
山を形成したフィンチューブを所定の全長に形成し、ス
テンレス製側板の間にフィンチューブを複数並置する。
そして、フィンチューブの貫通孔内に銅製の通水管を挿
通し、通水管の端末部を側板の開孔から突出し、銅製の
Ｕ字管を接合して端末部を接続するものである。以上の
構成により、燃焼排気に接触する部分には、アルミ又は
ステンレス鋼の耐食性素材が用いられ、ドレインによる
浸食を防止することが可能となる。In order to achieve this object, a heat exchanger for recovering waste heat of a water heater according to claim 1 is provided.
By cutting an aluminum material, a fin tube having a large number of fin ridges formed on the outer peripheral surface of the through hole is formed to a predetermined length, and a plurality of fin tubes are juxtaposed between stainless steel side plates.
Then, a copper water pipe is inserted into the through hole of the fin tube, the terminal of the water pipe is projected from the opening of the side plate, and the copper U-shaped pipe is joined to connect the terminal. With the above configuration, a portion that is in contact with the combustion exhaust gas is made of a corrosion-resistant material such as aluminum or stainless steel, so that erosion by the drain can be prevented.
【０００８】また、請求項２に記載の発明は、上記廃熱
回収用熱交換器を、フィンチューブの端末管状部の外周
面に一端側を当接し、開孔周縁のバーリング縁内に他端
側を挿入したステンレス製保護管を、通水管の外周に設
け、通水管を拡管加工することにより、通水管、保護
管、フィンチューブ及び側板を一体に接合して製作する
ものである。このように製作することにより、溶接やビ
ス止め等の手段が一切不要となり、製作コストの低減を
図ることができる。According to a second aspect of the present invention, one end of the heat exchanger for recovering waste heat is abutted on the outer peripheral surface of the terminal tubular portion of the fin tube, and the other end is provided within the burring edge of the opening periphery. A stainless steel protection tube with the side inserted is provided on the outer periphery of the water flow tube, and the water flow tube is expanded, whereby the water flow tube, the protection tube, the fin tube, and the side plate are integrally joined and manufactured. By manufacturing in this manner, means such as welding and screwing are not required at all, and the manufacturing cost can be reduced.
【０００９】[0009]
【発明の実施の形態】以下に、この発明の実施の形態を
実施例に基づいて説明する。図１から３はこの発明の具
体的実施例で、上記全体構成図の排気路中に組み込む廃
熱回収用熱交換器である。この廃熱回収用熱交換器にお
いて、アルミ材の切削加工で、軸心に貫通孔２２を形成
するとともに、この貫通孔２２の外周面に多数のフィン
山２１を形成したアルミ製フィンチューブ２０が所定の
全長に形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples. FIGS. 1 to 3 show a specific embodiment of the present invention, which is a waste heat recovery heat exchanger to be incorporated in the exhaust passage of the above-mentioned general configuration. In this waste heat recovery heat exchanger, an aluminum fin tube 20 having a through hole 22 formed in the shaft center and a plurality of fin ridges 21 formed on the outer peripheral surface of the through hole 22 is formed by cutting an aluminum material. It is formed to a predetermined length.
【００１０】フィンチューブ２０は、ステンレス製側板
３０の間に複数並置され、各貫通孔２２内に銅製の通水
管２３が挿通されている。通水管２３の端末部２３ａは
側板３０に開設したの開孔３１から突出され、銅製のＵ
字管２５を接合して隣接した端末部２３ａが接続され、
通水管２３内を流通する給湯通路を形成して廃熱回収用
熱交換器が構成される。A plurality of the fin tubes 20 are juxtaposed between the stainless steel side plates 30, and a copper water pipe 23 is inserted into each through hole 22. The terminal portion 23a of the water pipe 23 protrudes from an opening 31 formed in the side plate 30, and is made of copper U.
The adjacent terminal portions 23a are connected by joining the pipes 25,
A hot water supply passage that flows through the water pipe 23 is formed to constitute a heat exchanger for waste heat recovery.
【００１１】この廃熱回収用熱交換器の製作は、次の工
程で行われる。貫通孔２２に通水管２３を挿通し、フィ
ンチューブ２０の端末管状部２０ａに連続するように、
ステンレス製保護管２７で通水管２３の外周面を覆う。
この保護管２７は、端末管状部２０ａの外周面に一端側
を当接し、開孔３１周縁のバーリング縁３１ａ内に他端
側を挿入して通水管２３の外周に設けられる。以上の状
態にセットし、通水管２０を軸心からラジアル方向へ加
圧する拡管加工を施し（図３参照）、通水管２３、保護
管２７、フィンチューブ２０及び側板３０を同時に連結
・接合して一体化する。そして、Ｕ字管２５を端末部２
３ａ内に挿入してろう付けし、端末部２３ａを接続す
る。Ｕ字管２５及び通水管２３が銅製であるからろう付
け接合性は良好であり、こうして通水管２３を連通して
製作される。The production of this waste heat recovery heat exchanger is performed in the following steps. A water pipe 23 is inserted into the through hole 22 so as to be continuous with the terminal tubular portion 20a of the fin tube 20,
The outer peripheral surface of the water pipe 23 is covered with a protection pipe 27 made of stainless steel.
This protection tube 27 is provided on the outer periphery of the water pipe 23 with one end abutting on the outer peripheral surface of the terminal tubular portion 20a and the other end inserted into the burring edge 31a of the periphery of the opening 31. The water pipe 20 is set in the above-mentioned state, expanded by pressing the water pipe 20 in the radial direction from the axis (see FIG. 3), and the water pipe 23, the protection pipe 27, the fin tube 20, and the side plate 30 are simultaneously connected and joined. Integrate. Then, the U-shaped tube 25 is connected to the terminal unit 2.
3a and brazing, and the terminal 23a is connected. Since the U-shaped pipe 25 and the water pipe 23 are made of copper, the brazeability is good, and thus the water pipe 23 is made to communicate.
【００１２】[0012]
【発明の効果】以上のようにこの発明の給湯機の廃熱回
収用熱交換器は、アルミ材の切削加工で形成したフィン
チューブ２０の貫通孔２２に、銅製の通水管２３を挿通
して二重管構造とし、フィンチューブ２０をステンレス
製側板３０の間に複数並置して構成したので、燃焼排気
に接触して廃熱を吸収する部分には、アルミ及びステン
レス鋼の耐食性素材が用いられ、ドレインによる浸食を
防止し、耐久性の向上を図ることができる。As described above, the heat exchanger for recovering waste heat of a water heater according to the present invention has a copper water pipe 23 inserted into a through hole 22 of a fin tube 20 formed by cutting aluminum material. Since a plurality of fin tubes 20 are arranged side by side between the stainless steel side plates 30 in a double tube structure, aluminum and stainless steel corrosion-resistant materials are used in portions that come into contact with combustion exhaust and absorb waste heat. Thus, erosion by the drain can be prevented, and the durability can be improved.
【００１３】また、請求項２項に記載した製作手段によ
れば、通水管２３を拡管する塑性加工で主要部材を一度
に一体化することが可能であり、溶接やビス止め等の手
段が一切不要であるから製作作業性に優れ、製作コスト
の低減を図ることができるものである。According to the manufacturing means described in claim 2, it is possible to integrate the main members at once by plastic working for expanding the water pipe 23, and there is no means such as welding or screwing. Since it is unnecessary, the workability is excellent and the manufacturing cost can be reduced.
【図１】この発明の実施例の斜視図。FIG. 1 is a perspective view of an embodiment of the present invention.
【図２】フィンチューブの端末部の斜視図。FIG. 2 is a perspective view of a terminal portion of a fin tube.
【図３】製作工程を示す要部の断面図。FIG. 3 is a sectional view of a main part showing a manufacturing process.
【図４】廃熱回収用熱交換器を組み込んだ給湯機の全体
構成図。FIG. 4 is an overall configuration diagram of a water heater incorporating a waste heat recovery heat exchanger.
２０ フィンチューブ ２０ａ 端末管状部 ２１ フィン山 ２２ 貫通孔 ２３ 通水管 ２３ａ 端末部 ２５ Ｕ字管 ２７ 保護管 ３０ 側板 ３１ 開孔 ３１ａ バーリング縁 Reference Signs List 20 fin tube 20a terminal tubular portion 21 fin ridge 22 through hole 23 water pipe 23a terminal portion 25 U-shaped tube 27 protective tube 30 side plate 31 opening 31a burring edge
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年１月１８日（１９９９．１．１
８）[Submission date] January 18, 1999 (1999.1.1)
8)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００４】この給湯機に供給される給水は、最初に廃
熱回収用熱交換器８に供給された後、予熱管６から交換
器本体４へ供給される。したがって、廃熱回収用熱交換
器８で、排気路７を通過する燃焼排気中の廃熱によって
予め加熱され、一方、燃焼排気は廃熱が回収されて低温
化され、排気口９から排出される。このように、廃熱回
収用熱交換器８で燃焼排気に含まれる廃熱を回収するこ
とにより、器具の熱効率の向上を図るとともに、器具外
に放出される排気を低温化することができ、二百度以上
の燃焼排気を百度以下まで低下させることが可能であ
り、省エネルギーや環境問題の観点からも有益な手段で
ある。[0004] The water supplied to this water heater is first discarded.
After being supplied to the heat exchanger 8 for heat recovery, it is exchanged from the preheating tube 6.
It is supplied to the container main body 4. Therefore, heat exchange for waste heat recovery
By the waste heat in the combustion exhaust gas passing through the exhaust passage 7
On the other hand, the combustion exhaust gas is heated in advance, the waste heat is recovered, the temperature of the combustion exhaust gas is reduced, and the exhaust gas is discharged from the exhaust port 9. In this way, by collecting the waste heat contained in the combustion exhaust gas by the waste heat recovery heat exchanger 8, it is possible to improve the thermal efficiency of the appliance and to lower the temperature of the exhaust gas discharged outside the appliance, It is possible to reduce combustion exhaust of more than two hundred degrees to less than one hundred degrees, which is a useful means from the viewpoint of energy saving and environmental problems.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 新悟 神奈川県大和市深見台３丁目４番地 株式 会社ガスター内 (72)発明者 秋葉 祐明 神奈川県大和市深見台３丁目４番地 株式 会社ガスター内 (72)発明者 大友 昭久 群馬県桐生市宮本町１丁目８番12号 株式 会社アタゴ製作所内 (72)発明者 上西 正久 群馬県桐生市宮本町１丁目８番12号 株式 会社アタゴ製作所内 (72)発明者 谷畑 範雄 群馬県桐生市宮本町１丁目８番12号 株式 会社アタゴ製作所内 (72)発明者 大友 昇 群馬県桐生市宮本町１丁目８番12号 株式 会社アタゴ製作所内 Ｆターム(参考） 3L036 AA06 AA42 AE03 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shingo Kimura 3-4 Fukamidai, Yamato City, Kanagawa Prefecture Inside Gaster Co., Ltd. (72) Inventor Yuaki Akiba 3-4 Fukamidai, Yamato City, Kanagawa Prefecture Gaster Co., Ltd. (72) Inventor Akihisa Otomo 1-8-12, Miyamoto-cho, Kiryu-shi, Gunma, Japan Atago Seisakusho Co., Ltd. (72) Inventor Norio Tanihata 1-8-12 Miyamoto-cho, Kiryu-shi, Gunma, Japan Atago Manufacturing Co., Ltd. (Reference) 3L036 AA06 AA42 AE03
Claims (2)
む給湯機の廃熱回収用熱交換器であって、 アルミ材の切削加工で、貫通孔（２２）の外周面に多数
のフィン山（２１）を形成したフィンチューブ（２０）
を所定の全長に形成し、ステンレス製側板（３０）の間
にフィンチューブ（２０）を複数並置し、貫通孔（２
２）内に銅製の通水管（２３）を挿通し、通水管（２
３）の端末部（２３ａ）を側板（３０）の開孔（３１）
から突出し、銅製のＵ字管（２５）を接合して端末部
（２３ａ）を接続した給湯機の廃熱回収用熱交換器。1. A heat exchanger for recovering waste heat of a water heater to be incorporated into an exhaust passage of a forced combustion type water heater, wherein a plurality of fins are formed on an outer peripheral surface of a through hole (22) by cutting an aluminum material. Fin tube (20) having mountain (21)
Are formed to a predetermined length, a plurality of fin tubes (20) are juxtaposed between stainless steel side plates (30), and through holes (2) are formed.
2) Insert a copper water pipe (23) into the water pipe (2).
3) Open the end (23a) of the side plate (30) with the opening (31).
And a heat exchanger for recovering waste heat of a water heater in which a U-shaped tube (25) made of copper is joined and a terminal (23a) is connected.
（２０ａ）の外周面に一端側を当接し、開孔（３１）周
縁のバーリング縁（３１ａ）内に他端側を挿入したステ
ンレス製保護管（２７）を、通水管（２３）の外周に設
け、通水管（２３）を拡管加工し、通水管（２３）、保
護管（２７）、フィンチューブ（２０）及び側板（３
０）を一体に接合して製作した請求項１に記載の給湯機
の廃熱回収用熱交換器。2. A stainless steel protection in which one end abuts on an outer peripheral surface of a terminal tubular portion (20a) of a fin tube (20), and the other end is inserted into a burring edge (31a) of an opening (31). A pipe (27) is provided on the outer periphery of the water pipe (23), the water pipe (23) is expanded, and the water pipe (23), the protection pipe (27), the fin tube (20), and the side plate (3) are formed.
2. The heat exchanger for recovering waste heat of a water heater according to claim 1, wherein the heat exchanger is manufactured by integrally joining the heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35835398A JP3868644B2 (en) | 1998-11-11 | 1998-11-11 | Heat exchanger for recovering waste heat from water heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35835398A JP3868644B2 (en) | 1998-11-11 | 1998-11-11 | Heat exchanger for recovering waste heat from water heaters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000146304A true JP2000146304A (en) | 2000-05-26 |
| JP3868644B2 JP3868644B2 (en) | 2007-01-17 |
Family
ID=18458864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35835398A Expired - Fee Related JP3868644B2 (en) | 1998-11-11 | 1998-11-11 | Heat exchanger for recovering waste heat from water heaters |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3868644B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030097213A (en) * | 2002-06-20 | 2003-12-31 | 서울금속산업주식회사 | Heat exchanger and the same producing method |
| KR100452739B1 (en) * | 2002-03-12 | 2004-10-15 | 핀튜브텍(주) | Bended High Performance Gas Boiler |
| JP2006292193A (en) * | 2005-04-06 | 2006-10-26 | Matsushita Electric Ind Co Ltd | Waste heat collecting heat exchanger for combustion type heat source machine |
| JP2008107063A (en) * | 2006-10-27 | 2008-05-08 | Shinko Sangyo Kk | Fluid material heater using induction heating |
| JP2012069532A (en) * | 2011-12-26 | 2012-04-05 | Shinko Sangyo Kk | Fluid heating apparatus using induction heating |
| JP2016029317A (en) * | 2014-07-25 | 2016-03-03 | 株式会社ノーリツ | Water heater |
| JP2020051682A (en) * | 2018-09-27 | 2020-04-02 | 株式会社ノーリツ | Heat exchanger and manufacturing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5409056B2 (en) * | 2009-02-17 | 2014-02-05 | 株式会社アタゴ製作所 | Plate heat exchanger |
| CN110345642A (en) * | 2019-07-03 | 2019-10-18 | 宁波方太厨具有限公司 | Condensing heat exchanger and its manufacturing method, gas heater |
-
1998
- 1998-11-11 JP JP35835398A patent/JP3868644B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100452739B1 (en) * | 2002-03-12 | 2004-10-15 | 핀튜브텍(주) | Bended High Performance Gas Boiler |
| KR20030097213A (en) * | 2002-06-20 | 2003-12-31 | 서울금속산업주식회사 | Heat exchanger and the same producing method |
| JP2006292193A (en) * | 2005-04-06 | 2006-10-26 | Matsushita Electric Ind Co Ltd | Waste heat collecting heat exchanger for combustion type heat source machine |
| JP2008107063A (en) * | 2006-10-27 | 2008-05-08 | Shinko Sangyo Kk | Fluid material heater using induction heating |
| JP2012069532A (en) * | 2011-12-26 | 2012-04-05 | Shinko Sangyo Kk | Fluid heating apparatus using induction heating |
| JP2016029317A (en) * | 2014-07-25 | 2016-03-03 | 株式会社ノーリツ | Water heater |
| US9810450B2 (en) | 2014-07-25 | 2017-11-07 | Noritz Corporation | Water heater |
| JP2020051682A (en) * | 2018-09-27 | 2020-04-02 | 株式会社ノーリツ | Heat exchanger and manufacturing method thereof |
| CN110953915A (en) * | 2018-09-27 | 2020-04-03 | 株式会社能率 | Heat exchanger and method for manufacturing the same |
| JP7243104B2 (en) | 2018-09-27 | 2023-03-22 | 株式会社ノーリツ | Heat exchanger and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3868644B2 (en) | 2007-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1872062B1 (en) | Heat exchanger for condensing wall-mounted boilers | |
| JP2007163096A (en) | Method for manufacturing latent heat recovery type heat exchanger | |
| JP7167501B2 (en) | heat exchangers and water heaters | |
| JP2000146304A (en) | Heat exchanger for recovering waste heat of hot-water supplier | |
| US20170299274A1 (en) | Heat exchanger | |
| JP2000146305A (en) | Waste heat recovering heat exchanger for hot-water supplier | |
| JP2003294382A (en) | Heat exchanger | |
| JP7484074B2 (en) | Heat exchanger and hot water device equipped with same | |
| JP3343713B2 (en) | Heat exchanger for heating refrigerant | |
| CN106090973A (en) | Smoke processing system and method | |
| KR19990070599A (en) | Dual structure heat exchanger for condensing gas boiler | |
| KR101682229B1 (en) | Heat exchanger using waste heat | |
| KR100424854B1 (en) | A body heat exchanger of condensing gas boiler | |
| SK117999A3 (en) | Heat exchanger unit and use thereof | |
| JP2971685B2 (en) | Heat exchanger and method of manufacturing the same | |
| JPH09133491A (en) | Manufacture of heat exchanger | |
| CN218480761U (en) | Energy-saving condenser and full-flow stainless steel heat exchanger vacuum phase change boiler | |
| CN110631261B (en) | Tubular gas condensing boiler and system | |
| CN218723368U (en) | Novel heat transfer pipe structure | |
| JP2005326102A (en) | Heat exchanger, and heat source machine using heat exchanger | |
| US5566648A (en) | Heat exchanger | |
| JP2004245515A (en) | Heat exchanging device | |
| KR200237735Y1 (en) | A body heat exchanger of condensing gas boiler | |
| KR200280095Y1 (en) | Heat exchanger of condensing boiler | |
| JPH1068596A (en) | Heat exchanger for water and aqueous solutions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041022 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060627 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060821 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20061003 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20061011 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091020 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121020 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |