JP2014214924A - Latent heat exchanger - Google Patents

Latent heat exchanger Download PDF

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JP2014214924A
JP2014214924A JP2013091017A JP2013091017A JP2014214924A JP 2014214924 A JP2014214924 A JP 2014214924A JP 2013091017 A JP2013091017 A JP 2013091017A JP 2013091017 A JP2013091017 A JP 2013091017A JP 2014214924 A JP2014214924 A JP 2014214924A
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Prior art keywords
header
stay
heat receiving
latent heat
heat exchanger
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Japanese (ja)
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卓也 石塚
Takuya Ishizuka
卓也 石塚
和博 中澤
Kazuhiro Nakazawa
和博 中澤
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Corona Corp
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Corona Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Plasma & Fusion (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a latent heat exchanger capable of suppressing cracking of a TIG welded portion between a header main body and a header cap due to stress.SOLUTION: A latent heat exchanger 1 comprises: a body portion 3 accommodating therein a plurality of heat receiving tubes 2; and an inlet header 4 and an outlet header 5 to which upstream ends and downstream ends of the heat receiving tubes 2 are connected, respectively. Each of the inlet header 4 and the outlet header 5 includes: a container-shaped header main body 38 having a bottom 40 provided with insertion holes 41 into which end portions of the heat receiving tubes 2 are inserted and having an open surface opposed to the bottom 40; and a header cap 39 closing the open surface of the header main body 38. A peripheral edge of the header main body 38 is joined to that of the header cap 39. The latent heat exchanger 1 comprises: a rod-like stay 45 smaller in diameter than the heat receiving tubes 2; and insertion holes 44 that are provided in the header caps 39 and into which end portions of the stay 45 are inserted, respectively. The stay 45 is inserted into the heat receiving tubes 2, the end portions of the stay 45 are inserted into the insertion holes 44 of the header caps 39, and edges of the stay 45 are joined to those of the insertion holes 44 of the header caps 39.

Description

この発明は、燃焼ガスから潜熱を回収する潜熱熱交換器に関するものである。   The present invention relates to a latent heat exchanger that recovers latent heat from combustion gas.

従来この種の潜熱熱交換器としては、特許文献１に記載されているような、一対のヘッダ（流入ヘッダおよび流出ヘッダ）間に複数の直管状の受熱管が並列的に並べられたものがあり、各ヘッダとしては、特許文献２に記載されているような、受熱管の端部を接続する挿入孔が設けられた器状のヘッダ本体と、ヘッダ本体の開放部を閉塞するヘッダ蓋とで構成されたものがあり、このような潜熱熱交換器において、ヘッダ本体とヘッダ蓋との間に形成される空間は水が流通する空間となるので、隙間を生じないようにヘッダ本体とヘッダ蓋とを組み付ける必要がある。このため、ヘッダ本体とヘッダ蓋とを組み付ける際に、ヘッダ本体とヘッダ蓋との周縁どうしを全周にわたり接触させ、この接触部分を接合する方法としてＴＩＧ溶接を採用することがあった。   Conventionally, as this type of latent heat exchanger, there is one in which a plurality of straight tubular heat receiving tubes are arranged in parallel between a pair of headers (inflow header and outflow header) as described in Patent Document 1. Yes, as each header, as described in Patent Document 2, a vessel-shaped header body provided with an insertion hole for connecting the end of the heat receiving tube, and a header lid for closing the opening portion of the header body In such a latent heat exchanger, since the space formed between the header body and the header lid is a space through which water flows, the header body and the header are prevented from forming a gap. It is necessary to assemble the lid. For this reason, when assembling the header main body and the header lid, the peripheral edges of the header main body and the header lid are brought into contact with each other over the entire circumference, and TIG welding is sometimes employed as a method for joining the contact portions.

特開２００５−２７４０２８号公報Japanese Patent Laying-Open No. 2005-274028 特開２００７−１６３０９６号公報JP 2007-163096 A

ところで、このような潜熱熱交換器を備えた給湯機では、出湯時または出湯停止時に大きな水圧が潜熱熱交換器の流入ヘッダおよび流出ヘッダにかかるものであり、その水圧が応力としてヘッダ本体およびヘッダ蓋に加わるものであるが、出湯・出湯停止が繰り返し行われると、その応力によってヘッダ本体とヘッダ蓋との周縁のＴＩＧ溶接が行われた接合部分が割れを起こすことがあり、そこから水漏れが発生してしまうおそれがあるものであった。   By the way, in a water heater provided with such a latent heat exchanger, a large water pressure is applied to the inflow header and the outflow header of the latent heat exchanger when the hot water is discharged or stopped, and the water pressure is stressed as a header body and a header. Although it is added to the lid, if the hot and cold stops are repeatedly performed, the stress may cause cracks in the joint part where the header body and the header lid have been subjected to TIG welding at the periphery. May occur.

この発明は、上記課題を解決するために、特に請求項１ではその構成を、被加熱流体が流通する複数の直管状の受熱管と、該受熱管を内部に収容し両側端に開口部が形成された筒状の胴体部と、該胴体部の開口部を閉塞し前記受熱管の上流端および下流端がそれぞれ接続される流入ヘッダおよび流出ヘッダとを備え、前記流入ヘッダおよび前記流出ヘッダは、前記受熱管の端部が挿入される挿入孔が底部に設けられ且つその底部と対向する面が開放された器状のヘッダ本体と、該ヘッダ本体の開放面としての開放部を閉塞するヘッダ蓋とで構成され、前記ヘッダ本体の開放部に前記ヘッダ蓋を嵌入させ、前記ヘッダ本体の周縁と前記ヘッダ蓋の周縁とを全周にわたり接合する潜熱熱交換器において、前記受熱管の管径より小さい棒状のステーと、前記ヘッダ蓋に前記ステーの端部が差し込まれる差込孔とを設け、前記ステーを前記受熱管内に挿通させ、前記ステーの各端部を前記ヘッダ蓋の前記差込孔に差し込み、前記ステーの端縁と前記ヘッダ蓋の前記差込孔の端縁とを接合するものとした。   In order to solve the above-mentioned problems, the present invention is particularly configured as claimed in claim 1, wherein a plurality of straight tubular heat receiving pipes through which a fluid to be heated flows, and the heat receiving pipes are accommodated therein, and openings are provided at both side ends. A cylindrical body portion formed, and an inflow header and an outflow header that close the opening of the body portion and are connected to the upstream end and the downstream end of the heat receiving pipe, respectively. A vessel-shaped header body provided with an insertion hole into which the end of the heat receiving pipe is inserted at the bottom, and a surface facing the bottom is opened, and a header that closes the opening as an open surface of the header body In the latent heat exchanger where the header lid is fitted into the open portion of the header body, and the peripheral edge of the header body and the peripheral edge of the header lid are joined over the entire circumference, the tube diameter of the heat receiving pipe Smaller bar stay An insertion hole into which the end of the stay is inserted into the header lid, the stay is inserted into the heat receiving pipe, each end of the stay is inserted into the insertion hole of the header lid, and the stay And the edge of the insertion hole of the header lid are joined.

この発明の請求項1によれば、ヘッダ本体の周縁とヘッダ蓋の周縁とを接合したものにおいて、ステーを受熱管内に挿通し、ステーの各端部をヘッダ蓋に設けた差込孔に差し込み、ステーの端縁と差込孔の端縁とを接合したことで、水圧による応力がかかる箇所をヘッダ本体の周縁とヘッダ蓋の周縁との接合部分以外にも分散することができ、ヘッダ本体の周縁とヘッダ蓋の周縁との接合部分の割れを抑制することができるものである。また、ステーを受熱管の管径より小径の直管状として、受熱管内を挿通させて、ステーにより流入ヘッダ側のヘッダ蓋と流出ヘッダ側のヘッダ蓋の両方をいっぺんに接続するので、流入ヘッダ側のヘッダ蓋にだけ、または流出ヘッダ側のヘッダ蓋にだけ片側ずつステーを用いて接続するものに比べて、部品点数が少なくてすむと共に溶接箇所が少なくなるので、コストを安価に抑えることができるものである。   According to claim 1 of the present invention, in the case where the periphery of the header body and the periphery of the header lid are joined, the stay is inserted into the heat receiving pipe, and each end of the stay is inserted into the insertion hole provided in the header lid. By joining the edge of the stay and the edge of the insertion hole, the place where the stress due to the water pressure is applied can be dispersed in addition to the joint between the peripheral edge of the header body and the peripheral edge of the header lid. The crack of the junction part of the periphery of this and the periphery of a header lid | cover can be suppressed. In addition, since the stay is a straight tube having a diameter smaller than the diameter of the heat receiving pipe, the heat receiving pipe is inserted, and the header cover on the inflow header side and the header cover on the outflow header side are connected together by the stay. Compared to the one that uses stays only on the header lid or only on the header lid on the outflow header side, the number of parts is reduced and the number of welding points is reduced, so the cost can be kept low. It is.

この発明の一実施形態を示す潜熱熱交換器の斜視図。The perspective view of the latent heat exchanger which shows one Embodiment of this invention. 同一実施形態のヘッダ蓋を外した状態の潜熱熱交換器の斜視図。The perspective view of the latent heat exchanger of the state which removed the header cover of the same embodiment. 同一実施形態の潜熱熱交換器の断面図。Sectional drawing of the latent heat exchanger of the same embodiment. 同一実施形態の潜熱熱交換器の流入ヘッダ部分の部品展開断面図。The components expanded sectional view of the inflow header part of the latent heat exchanger of the same embodiment. 同一実施形態の潜熱熱交換器を備えた潜熱回収型給湯機の概略断面図。The schematic sectional drawing of the latent-heat-recovery type water heater provided with the latent heat exchanger of the same embodiment.

次に、この発明の一実施形態の潜熱熱交換器を図面に基づき説明する。
図１〜図４に示すように、潜熱熱交換器１は、複数の直管状の受熱管２と、これらの受熱管２を内部に収容する胴体部３と、受熱管２の上流端が接続される流入ヘッダ４と、受熱管２の下流端が接続される流出ヘッダ５とを備えているものである。 Next, a latent heat exchanger according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the latent heat exchanger 1 is connected to a plurality of straight tubular heat receiving tubes 2, a body portion 3 that accommodates these heat receiving tubes 2, and an upstream end of the heat receiving tubes 2. The inflow header 4 and the outflow header 5 to which the downstream end of the heat receiving pipe 2 is connected are provided.

図５に示すように、潜熱熱交換器１は、潜熱回収型給湯機６の一部を構成するものであり、潜熱回収型給湯機６は、顕熱熱交換器としての円筒状の貯湯缶体７と、石油燃料を燃焼させるバーナ部８と、貯湯缶体７の上方に設置され内部にロックウールやグラスウール等の消音材９を有する消音部１０と、潜熱熱交換器１と、潜熱熱交換器１および消音部１０の上方に設置された扁平箱状の連通路１１と、連通路１１と接続されバーナ部８で発生される燃焼ガスを外部に排出する排気筒１２と、潜熱熱交換器１で発生したドレンを中和する中和器１３とで構成されているものである。   As shown in FIG. 5, the latent heat exchanger 1 constitutes a part of the latent heat recovery type hot water heater 6, and the latent heat recovery type hot water heater 6 is a cylindrical hot water storage can as a sensible heat exchanger. Body 7, burner section 8 for burning petroleum fuel, silencer section 10 installed above hot water storage can body 7 and having silencer 9 such as rock wool or glass wool, latent heat exchanger 1, latent heat A flat box-like communication passage 11 installed above the exchanger 1 and the muffler 10, an exhaust pipe 12 connected to the communication passage 11 and exhausting combustion gas generated in the burner portion 8 to the outside, and latent heat exchange And a neutralizer 13 for neutralizing the drain generated in the vessel 1.

前記貯湯缶体７は内部に一定量の湯水が貯湯され、貯湯缶体７の下部内側には燃焼室１４が形成され、貯湯缶体７内には多数の煙道を構成する熱交換パイプ１５が複数配置され、貯湯缶体７の上部にはバーナ部８で発生させた燃焼ガスを消音部１０に流出させる缶体燃焼ガス出口１６が形成されているものである。なお、１７は貯湯缶体７内の湯水の温度を検出する貯湯温度センサ、１８は貯湯缶体７下部に接続され潜熱熱交換器１の受熱管２で予熱された湯水を貯湯缶体７に流入させる連結管、１９は貯湯缶体７上部に接続され貯湯缶体７内に貯湯されている湯水を適宜給湯必要箇所に供給する給湯管である。   The hot water storage can body 7 stores a certain amount of hot water therein, a combustion chamber 14 is formed inside the lower portion of the hot water storage can body 7, and a heat exchange pipe 15 constituting a number of flues in the hot water storage can body 7. Are arranged, and a can body combustion gas outlet 16 is formed at the upper part of the hot water storage can body 7 to allow the combustion gas generated in the burner section 8 to flow out to the muffler section 10. A hot water storage temperature sensor 17 detects the temperature of the hot water in the hot water storage can body 7, and 18 is a hot water storage can body 7 that is connected to the lower portion of the hot water storage can body 7 and preheated by the heat receiving pipe 2 of the latent heat exchanger 1. A connecting pipe 19 for inflow is connected to the upper part of the hot water storage can body 7 and is a hot water supply pipe for supplying hot water stored in the hot water storage can body 7 to a location where hot water supply is required.

前記バーナ部８は、点火電極２０や燃料を供給するノズル２１や燃焼用空気を供給する燃焼ファン２２を有し、燃焼室１４内に臨ませたバーナ部８の燃焼によって発生する燃焼ガスが燃焼室１４と連通している熱交換パイプ１５を通過する際、熱交換パイプ１５内の高温の燃焼ガスと貯湯缶体７内の貯水との間で熱交換が行われ貯湯缶体７内の湯水が高温に加熱されるものである。   The burner unit 8 includes an ignition electrode 20, a nozzle 21 for supplying fuel, and a combustion fan 22 for supplying combustion air, and combustion gas generated by combustion of the burner unit 8 facing the combustion chamber 14 is burned. When passing through the heat exchange pipe 15 communicating with the chamber 14, heat is exchanged between the high-temperature combustion gas in the heat exchange pipe 15 and the stored water in the hot water storage can body 7, so that the hot water in the hot water storage can body 7 is obtained. Is heated to a high temperature.

前記消音部１０は、缶体燃焼ガス出口１６からの燃焼ガスを流入させる消音部燃焼ガス入口２３と、消音材９と、消音部１０内に形成され燃焼ガスが通過する消音部燃焼ガス流路２４と、消音部燃焼ガス流路２４を通過した燃焼ガスを潜熱熱交換器１に流出させる消音部燃焼ガス出口２５とを備えているものである。   The silencer 10 includes a silencer combustion gas inlet 23 through which combustion gas from the can combustion gas outlet 16 flows, a silencer 9, and a silencer combustion gas flow path formed in the silencer 10 and through which the combustion gas passes. 24 and a silencer combustion gas outlet 25 through which the combustion gas that has passed through the silencer combustion gas flow path 24 flows out to the latent heat exchanger 1.

前記潜熱熱交換器１は、胴体部３の一側面に形成され消音部燃焼ガス出口２５からの燃焼ガスを流入させる潜熱熱交燃焼ガス入口２６と、胴体部３内に形成され燃焼ガスが通過する潜熱熱交燃焼ガス流路２７と、胴体部３の上面に形成され潜熱熱交燃焼ガス流路２７を通過した燃焼ガスを連通路１１に流出させる潜熱熱交燃焼ガス出口２８とを備え、胴体部３の底面には、潜熱熱交換器１で発生するドレンを中和器１３に導くドレン管２９と接続されるドレン排水接続口３０が設けられているものである。   The latent heat exchanger 1 is formed on one side of the body part 3 and is formed in the body part 3 through the latent heat exchange combustion gas inlet 26 through which the combustion gas from the muffler part combustion gas outlet 25 flows. A latent heat heat exchange combustion gas flow path 27 and a latent heat heat exchange combustion gas outlet 28 that is formed on the upper surface of the body portion 3 and that passes through the latent heat heat exchange combustion gas flow path 27 and flows out to the communication path 11. A drain drainage connection port 30 connected to a drain pipe 29 that guides the drain generated in the latent heat exchanger 1 to the neutralizer 13 is provided on the bottom surface of the body portion 3.

また、流入ヘッダ４には、給水管３１と接続され給水管３１からの給水を流入ヘッダ４内に流入させる流入接続口３２が設けられ、流出ヘッダ５には、潜熱熱交換１と貯湯缶体７とを連結する連結管１８の一端と接続され潜熱熱交換器１によって加熱された湯水を流出ヘッダ５から流出させる流出接続口３３が設けられているものである。   The inflow header 4 is provided with an inflow connection port 32 that is connected to the water supply pipe 31 and allows the water supplied from the water supply pipe 31 to flow into the inflow header 4. The outflow header 5 has a latent heat exchange 1 and a hot water storage can body. 7 is provided with an outflow connection port 33 that is connected to one end of a connecting pipe 18 that connects to the outflow header 7 and that causes hot water heated by the latent heat exchanger 1 to flow out from the outflow header 5.

前記連通路１１は潜熱熱交燃焼ガス出口２８からの燃焼ガスを流入させる連通路燃焼ガス入口３４と、連通路１１内に形成され燃焼ガスが通過する連通路燃焼ガス流路３５と、連通路燃焼ガス流路３５を通過した燃焼ガスを排気筒１２に流出させる連通路燃焼ガス出口３６とを備えているものである。   The communication passage 11 includes a communication passage combustion gas inlet 34 through which combustion gas from the latent heat heat exchange combustion gas outlet 28 flows, a communication passage combustion gas passage 35 formed in the communication passage 11 and through which the combustion gas passes, and a communication passage. A communication passage combustion gas outlet 36 for allowing the combustion gas that has passed through the combustion gas flow path 35 to flow into the exhaust cylinder 12 is provided.

前記中和器１３は、その内部にドレンを中和するための中和剤（図示せず）が充填されており、ドレン管２９から中和器１３に導かれたドレンを中和し、中和されたドレンを排水管３７を介して外部に排出するものである。   The neutralizer 13 is filled with a neutralizing agent (not shown) for neutralizing the drain, neutralizes the drain led from the drain pipe 29 to the neutralizer 13, The summed drain is discharged to the outside through the drain pipe 37.

次に、潜熱熱交換器１について詳細に説明する。
潜熱熱交換器１の胴体部３は、左右の両側端に開口部が形成された角筒状をしており、胴体部３は燃焼ガスから潜熱を回収をした際に発生する強酸性のドレンが内壁に付着するため、耐食性に優れたステンレス製で構成されているものである。 Next, the latent heat exchanger 1 will be described in detail.
The body part 3 of the latent heat exchanger 1 has a rectangular tube shape with openings on the left and right sides, and the body part 3 is a strongly acidic drain that is generated when latent heat is recovered from the combustion gas. Since it adheres to the inner wall, it is made of stainless steel with excellent corrosion resistance.

また、流入ヘッダ４（流出ヘッダ５についても同じ）は、胴体部３の開口部を閉塞するように嵌入されて固定されており、受熱管２の上流端が接続されるヘッダ本体３８とヘッダ本体３８とヘッダ蓋３９とから構成されているものである。なお、流出ヘッダ５もヘッダ本体３８とヘッダ蓋３９とで構成されるものであるが、流出ヘッダ５のヘッダ本体３８には、受熱管２の下流端が接続されているものである。胴体部３に流入ヘッダ４および流出ヘッダ５が固定されると、胴体部３内に燃焼ガスが通過する潜熱熱交燃焼ガス流路２７が形成されるものである。   The inflow header 4 (the same applies to the outflow header 5) is fitted and fixed so as to close the opening of the body portion 3, and the header main body 38 and the header main body to which the upstream end of the heat receiving pipe 2 is connected. 38 and a header lid 39. The outflow header 5 is also composed of a header main body 38 and a header lid 39, but the downstream end of the heat receiving pipe 2 is connected to the header main body 38 of the outflow header 5. When the inflow header 4 and the outflow header 5 are fixed to the body portion 3, a latent heat heat exchange combustion gas flow path 27 through which the combustion gas passes is formed in the body portion 3.

前記ヘッダ本体３８は、図４に詳しく表れているように、器状に形成され、その底部４０には、受熱管２の数だけバーリング加工が施されて、ヘッダ本体３８の内方側に突出する立ち上がりを周縁に備えた挿入孔４１が形成されるものであり、この複数の挿入孔４１に複数の直管状の受熱管２の端部が挿入され接続されてヘッダ本体３８間に受熱管２が並列的に並べられた構造となるものである。なお、ヘッダ本体３８の底部４０と対向する面は開放されており、その開放面としての開放部４２の周縁部分は、拡開された拡開部４３が形成されているものである。   As shown in detail in FIG. 4, the header body 38 is formed in a container shape, and its bottom portion 40 is subjected to burring processing by the number of the heat receiving pipes 2 and protrudes inward of the header body 38. An insertion hole 41 having a rising edge at the periphery is formed, and ends of the plurality of straight tubular heat receiving pipes 2 are inserted and connected to the plurality of insertion holes 41 so that the heat receiving pipe 2 is interposed between the header bodies 38. Are arranged in parallel. In addition, the surface facing the bottom portion 40 of the header main body 38 is open, and the widened portion 43 is formed at the peripheral portion of the open portion 42 as the open surface.

また、前記ヘッダ本体３８の開放部４２は、ヘッダ蓋３９によって閉塞され、ヘッダ本体３８とヘッダ蓋３９との間には水が流通する空間が形成されるものである。このヘッダ蓋３９には、ヘッダ蓋３９の外方に突出する立ち上がりを周縁に備えた差込孔４４が複数形成されるものであり、この差込孔４４には、受熱管２の管径より小径の直管状をしており受熱管２より長尺のステー４５が複数（ここでは、３本）接続されるものであり、ステー４５は受熱管２内を挿通し、ステー４５の一端は流入ヘッダ４のヘッダ蓋３９の差込孔４４に、ステー４５の他端は流出ヘッダ５のヘッダ蓋３９の差込孔４４に差し込まれそれぞれ接続され、差込孔４４の端縁とステー４５の端縁とを全周にわたり接触させて、この接触部分をＴＩＧ溶接により接合されるものである。また、ヘッダ本体３８とヘッダ蓋３９とを組み付ける際は、ヘッダ本体３８の拡開部４３にヘッダ蓋３９を嵌入させ、ヘッダ本体３８の拡開部４３の周縁とヘッダ蓋３９の周縁とを全周にわたり接触させて、この接触部分をＴＩＧ溶接により接合するものである。   Further, the opening 42 of the header body 38 is closed by a header lid 39, and a space through which water flows is formed between the header body 38 and the header lid 39. The header lid 39 is formed with a plurality of insertion holes 44 having rising edges protruding outward from the header lid 39 at the periphery, and the insertion holes 44 have a diameter larger than that of the heat receiving pipe 2. A plurality of stays 45 (three in this case) that are longer than the heat receiving pipe 2 are connected, and the stay 45 is inserted through the heat receiving pipe 2 and one end of the stay 45 flows into the stay 45. The other end of the stay 45 is inserted into the insertion hole 44 of the header lid 39 of the outflow header 5 and connected to the insertion hole 44 of the header lid 39 of the header 4, and the edge of the insertion hole 44 and the end of the stay 45 are connected. The edge is brought into contact with the entire circumference, and the contact portion is joined by TIG welding. Further, when assembling the header body 38 and the header lid 39, the header lid 39 is fitted into the expanded portion 43 of the header body 38, and the peripheral edge of the expanded portion 43 of the header main body 38 and the peripheral edge of the header lid 39 are all Contact is made over the circumference, and this contact portion is joined by TIG welding.

このように、ヘッダ本体３８の周縁とヘッダ蓋３９の周縁とをＴＩＧ溶接により接合したものにおいて、受熱管２の管径より小径の直管状のステー４５を受熱管２内に挿通し、ステー４５の各端部をヘッダ蓋３９に設けた差込孔４４に接続し、差込孔４４の端縁とステー４５の端縁とをＴＩＧ溶接により接合したことで、水圧による応力がかかる箇所をヘッダ本体３８の周縁とヘッダ蓋３９の周縁との接合部分、すなわちＴＩＧ溶接部分以外にも分散することができ、ヘッダ本体３８の周縁とヘッダ蓋３９の周縁とのＴＩＧ溶接部分の割れを抑制することができ、水漏れを防止することができるものである。また、ステー４５を受熱管２の管径より小径の直管状として、受熱管２内を挿通させて、ステー４５により流入ヘッダ４側のヘッダ蓋３９と流出ヘッダ５側のヘッダ蓋３９の両方をいっぺんに接続するので、流入ヘッダ４側のヘッダ蓋３９にだけ、または流出ヘッダ５側のヘッダ蓋３９にだけ片側ずつステー４５を用いて接続するものに比べて、部品点数が少なくてすむと共に溶接箇所が少なくなるので、コストを安価に抑えることができるものである。   In this way, in the case where the periphery of the header body 38 and the periphery of the header lid 39 are joined by TIG welding, a straight tubular stay 45 having a smaller diameter than the tube diameter of the heat receiving pipe 2 is inserted into the heat receiving pipe 2, and the stay 45 Are connected to the insertion holes 44 provided in the header lid 39, and the edge of the insertion hole 44 and the end edge of the stay 45 are joined by TIG welding, so that the location where the stress due to water pressure is applied to the header It is possible to disperse other than the joint portion between the peripheral edge of the main body 38 and the peripheral edge of the header lid 39, that is, the TIG welded portion, and suppress the cracking of the TIG welded portion between the peripheral edge of the header main body 38 and the peripheral edge of the header lid 39 It is possible to prevent water leakage. Further, the stay 45 is a straight tube having a diameter smaller than the diameter of the heat receiving pipe 2, and the heat receiving pipe 2 is inserted through the stay 45, so that both the header lid 39 on the inflow header 4 side and the header lid 39 on the outflow header 5 side are Since they are connected together, the number of parts is reduced and the welding location is reduced as compared with the case where only the header cover 39 on the inflow header 4 side or the header cover 39 on the outflow header 5 side is connected with the stay 45 on one side. Therefore, the cost can be kept low.

次に、この潜熱回収型給湯機６の動作について説明する。
給湯必要箇所に適宜設けられている給湯蛇口（図示せず）を開くと、給湯管１９により貯湯缶体７内の高温水が出湯されて給湯が開始される。それと同時に、給水管３１から流入ヘッダ４に水が流入し、水は流入ヘッダ４から受熱管２内を通過して流出ヘッダ５へ流れ、流出ヘッダ５から連結管１８を介して貯湯缶体７内に流入するものである。 Next, the operation of the latent heat recovery type water heater 6 will be described.
When a hot water supply faucet (not shown) appropriately provided at a hot water supply location is opened, the hot water in the hot water storage can 7 is discharged from the hot water supply pipe 19 and hot water supply is started. At the same time, water flows into the inflow header 4 from the water supply pipe 31, and the water flows from the inflow header 4 through the heat receiving pipe 2 to the outflow header 5, and from the outflow header 5 through the connecting pipe 18 to the hot water storage can body 7. It flows into the inside.

そして、貯湯缶体７内の温水の温度が徐々に低下し、貯湯温度センサ１７で検出する温度が所定温度以下になると、バーナ部８にて燃焼が開始され、その燃焼ガスが燃焼室１４から貯湯缶体７内の熱交換パイプ１５を通過する際、熱交換パイプ１５内の高温の燃焼ガスと貯湯缶体７内の貯水との間で熱交換されて貯湯缶体７内の被加熱流体としての水を加熱するものである。   When the temperature of the hot water in the hot water storage can 7 gradually decreases and the temperature detected by the hot water storage temperature sensor 17 falls below a predetermined temperature, combustion is started in the burner unit 8, and the combustion gas is discharged from the combustion chamber 14. When passing through the heat exchange pipe 15 in the hot water storage can body 7, heat is exchanged between the high-temperature combustion gas in the heat exchange pipe 15 and the water stored in the hot water storage can body 7 to be heated in the hot water storage can body 7. As the water is heated.

前記熱交換パイプ１５内を通過して顕熱を吸熱された燃焼ガスは、缶体燃焼ガス出口１６を抜け消音部燃焼ガス入口２３から消音部１０に流入する。消音部１０に流入した燃焼ガスは、まだ高温で音速が大きく、同一周波数でも波長が短いので、消音部１０を潜熱熱交換器１の上流側に配置することにより、小容積の消音部１０でも低周波を効果的に消音できるものである。また、燃焼ガスの流れ方向として消音部１０を潜熱熱交換器１の上流側に配置することで、まだ燃焼ガスがドレンを生じるほど温度が低下しておらず、ドレンによる消音材９の腐食を防止できるものである。   The combustion gas that has absorbed the sensible heat through the heat exchange pipe 15 passes through the can body combustion gas outlet 16 and flows into the silencer 10 from the silencer combustion gas inlet 23. The combustion gas that has flowed into the silencer 10 is still high in temperature, has a high sound speed, and has a short wavelength even at the same frequency. By arranging the silencer 10 on the upstream side of the latent heat exchanger 1, even in the silencer 10 having a small volume. It can effectively mute low frequencies. In addition, by disposing the silencer 10 on the upstream side of the latent heat exchanger 1 as the flow direction of the combustion gas, the temperature has not yet decreased to the extent that the combustion gas generates drainage, and the silencer 9 is corroded by the drain. It can be prevented.

消音部１０を通過した燃焼ガスは、潜熱熱交燃焼ガス入口２６から潜熱熱交換器１の胴体部３内に流入し、胴体部３内に流入し潜熱熱交燃焼ガス流路２７を通過する燃焼ガスは、胴体部３内に収容された複数の受熱管２を流れる水と熱交換して貯湯缶体７に流入される水を加熱し、潜熱熱交換器１の潜熱熱交燃焼ガス流路２７を通過して潜熱を吸熱された燃焼ガスは、潜熱熱交燃焼ガス出口２８を抜けて連通路１１に流入し、連通路１１を通り排気筒１２から屋外に排気されるものである。   The combustion gas that has passed through the silencer 10 flows into the body 3 of the latent heat exchanger 1 from the latent heat exchanger gas inlet 26, flows into the body 3, and passes through the latent heat exchanger gas channel 27. The combustion gas exchanges heat with the water flowing through the plurality of heat receiving pipes 2 accommodated in the body portion 3 to heat the water flowing into the hot water storage can 7, and the latent heat heat exchange combustion gas flow of the latent heat exchanger 1 The combustion gas that has absorbed the latent heat through the passage 27 passes through the latent heat heat exchange combustion gas outlet 28 and flows into the communication passage 11, and is exhausted from the exhaust pipe 12 to the outside through the communication passage 11.

前記潜熱熱交換器１において、複数の受熱管２を流通する被加熱流体としての水と加熱流体としての燃焼ガスとが熱交換されると、燃焼ガス中の水蒸気が露点以下となることによって、受熱管２の表面や燃焼ガスと接触するヘッダ本体３８の底部４０の壁面に強酸性のドレンが生成され、生成されたドレンは胴体部３の底面で回収されるものであるが、胴体部３の底面はドレン排水接続口３０に向かって下り傾斜が付されており、胴体部３内で発生したドレンをスムーズにドレン排水接続口３０に導ける構造となっているものである。潜熱熱交換器１で発生したドレンは、ドレン排水接続口３０からドレン管２９を通過し中和器１３に流入し、中和器１３内で中和剤と接触して中和され、中和されたドレンは排水管３７を介して所定箇所の下水に排水されるものである。   In the latent heat exchanger 1, when the water as the heated fluid flowing through the plurality of heat receiving tubes 2 and the combustion gas as the heating fluid are subjected to heat exchange, the water vapor in the combustion gas becomes below the dew point, Strongly acidic drain is generated on the surface of the heat receiving pipe 2 and the wall surface of the bottom 40 of the header main body 38 that comes into contact with the combustion gas, and the generated drain is collected at the bottom of the trunk 3. The bottom surface is inclined downward toward the drain drain connection port 30, so that the drain generated in the body 3 can be smoothly guided to the drain drain connection port 30. The drain generated in the latent heat exchanger 1 passes through the drain pipe 29 from the drain drain connection port 30 and flows into the neutralizer 13, and is neutralized by contacting with the neutralizer in the neutralizer 13. The drain thus drained is drained into sewage at a predetermined location via the drain pipe 37.

なお、本発明は先に説明した一実施形態に限定されるものではなく、本実施形態では、ステー４５を３本設けているが、ヘッダ本体３８とヘッダ蓋３９とのＴＩＧ溶接部分にかかる応力を分散させ、ヘッダ本体３８とヘッダ蓋３９とのＴＩＧ溶接部分に割れを発生させないのに必要な本数だけ設ければよいものである。   The present invention is not limited to the above-described embodiment. In this embodiment, three stays 45 are provided, but the stress applied to the TIG welded portion between the header main body 38 and the header lid 39. , And as many as necessary to prevent cracks from occurring in the TIG welded portion between the header main body 38 and the header lid 39.

また、本実施形態では、ステー４５を、受熱管２の管径より小径で且つ受熱管２より長尺の直管状のものとしたが、ステー４５は中身が中空の管状でなくてもよく、中実の円柱状のものでもよく、また、角柱状のものでもよいものであり、受熱管２の管径より小さく且つ受熱管２より長尺の棒状のものであれば特に限定されるものではない。   In the present embodiment, the stay 45 is a straight tube having a diameter smaller than the diameter of the heat receiving tube 2 and longer than the heat receiving tube 2, but the stay 45 may not be a hollow tube. It may be a solid cylindrical shape or a prismatic shape, and is not particularly limited as long as it has a rod shape smaller than the diameter of the heat receiving pipe 2 and longer than the heat receiving pipe 2. Absent.

１ 潜熱熱交換器
２ 受熱管
３ 胴体部
４ 流入ヘッダ
５ 流出ヘッダ
３８ ヘッダ本体
３９ ヘッダ蓋
４０ 底部
４１ 挿入孔
４２ 開放部
４４ 差込孔
４５ ステー DESCRIPTION OF SYMBOLS 1 Latent heat exchanger 2 Heat receiving pipe 3 Body part 4 Inflow header 5 Outflow header 38 Header main body 39 Header lid 40 Bottom part 41 Insertion hole 42 Opening part 44 Insertion hole 45 Stay

Claims (1)

被加熱流体が流通する複数の直管状の受熱管と、該受熱管を内部に収容し両側端に開口部が形成された筒状の胴体部と、該胴体部の開口部を閉塞し前記受熱管の上流端および下流端がそれぞれ接続される流入ヘッダおよび流出ヘッダとを備え、前記流入ヘッダおよび前記流出ヘッダは、前記受熱管の端部が挿入される挿入孔が底部に設けられ且つその底部と対向する面が開放された器状のヘッダ本体と、該ヘッダ本体の開放面としての開放部を閉塞するヘッダ蓋とで構成され、前記ヘッダ本体の開放部に前記ヘッダ蓋を嵌入させ、前記ヘッダ本体の周縁と前記ヘッダ蓋の周縁とを全周にわたり接合する潜熱熱交換器において、前記受熱管の管径より小さい棒状のステーと、前記ヘッダ蓋に前記ステーの端部が差し込まれる差込孔とを設け、前記ステーを前記受熱管内に挿通させ、前記ステーの各端部を前記ヘッダ蓋の前記差込孔に差し込み、前記ステーの端縁と前記ヘッダ蓋の前記差込孔の端縁とを接合するようにしたことを特徴とする潜熱熱交換器。   A plurality of straight tubular heat receiving pipes through which a fluid to be heated flows, a cylindrical body part that accommodates the heat receiving pipes therein and has openings at both ends, and the openings of the body parts are closed. An inflow header and an outflow header to which an upstream end and a downstream end of a heat pipe are connected, respectively, and the inflow header and the outflow header are provided with an insertion hole into which an end of the heat receiving pipe is inserted, and the bottom And a header lid that closes an open portion as an open surface of the header body, and the header lid is fitted into the open portion of the header body, In the latent heat exchanger for joining the peripheral edge of the header body and the peripheral edge of the header lid over the entire circumference, a rod-like stay smaller than the diameter of the heat receiving pipe, and an insertion into which the end of the stay is inserted into the header lid A hole and a front Insert the stay into the heat receiving pipe, insert each end of the stay into the insertion hole of the header lid, and join the edge of the stay and the edge of the insertion hole of the header lid A latent heat exchanger characterized by that.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017172900A (en) * 2016-03-24 2017-09-28 株式会社ユタカ技研 Gas water heater
JP2017172899A (en) * 2016-03-24 2017-09-28 株式会社ユタカ技研 Gas water heater

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543221U (en) * 1978-09-11 1980-03-21
JPS5620902A (en) * 1979-07-30 1981-02-27 Toyo Engineering Corp Waste heat boiler
JPS60122677U (en) * 1984-01-25 1985-08-19 三菱重工業株式会社 Heat exchanger
JPS62614A (en) * 1985-06-25 1987-01-06 Nippon Denso Co Ltd Heat exchanger
JPH066981U (en) * 1992-06-17 1994-01-28 石川島播磨重工業株式会社 Heat exchanger
JPH0681650A (en) * 1992-09-03 1994-03-22 Toyota Motor Corp Radiator abnormality detecting device for internal combustion engine
JPH06313696A (en) * 1993-04-30 1994-11-08 Sanden Corp Heat exchanger
JP2005274028A (en) * 2004-03-25 2005-10-06 Noritz Corp Combustion device
JP2006337000A (en) * 2005-06-06 2006-12-14 Mitsubishi Heavy Ind Ltd Heat exchanger and method for manufacturing heat exchanger
US20070266702A1 (en) * 2006-05-16 2007-11-22 James Scott Cotton Combined egr cooler and plasma reactor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543221U (en) * 1978-09-11 1980-03-21
JPS5620902A (en) * 1979-07-30 1981-02-27 Toyo Engineering Corp Waste heat boiler
JPS60122677U (en) * 1984-01-25 1985-08-19 三菱重工業株式会社 Heat exchanger
JPS62614A (en) * 1985-06-25 1987-01-06 Nippon Denso Co Ltd Heat exchanger
JPH066981U (en) * 1992-06-17 1994-01-28 石川島播磨重工業株式会社 Heat exchanger
JPH0681650A (en) * 1992-09-03 1994-03-22 Toyota Motor Corp Radiator abnormality detecting device for internal combustion engine
JPH06313696A (en) * 1993-04-30 1994-11-08 Sanden Corp Heat exchanger
JP2005274028A (en) * 2004-03-25 2005-10-06 Noritz Corp Combustion device
JP2006337000A (en) * 2005-06-06 2006-12-14 Mitsubishi Heavy Ind Ltd Heat exchanger and method for manufacturing heat exchanger
US20070266702A1 (en) * 2006-05-16 2007-11-22 James Scott Cotton Combined egr cooler and plasma reactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017172900A (en) * 2016-03-24 2017-09-28 株式会社ユタカ技研 Gas water heater
JP2017172899A (en) * 2016-03-24 2017-09-28 株式会社ユタカ技研 Gas water heater

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