JP6029504B2 - Latent heat recovery type heat source machine - Google Patents

Latent heat recovery type heat source machine Download PDF

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JP6029504B2
JP6029504B2 JP2013060397A JP2013060397A JP6029504B2 JP 6029504 B2 JP6029504 B2 JP 6029504B2 JP 2013060397 A JP2013060397 A JP 2013060397A JP 2013060397 A JP2013060397 A JP 2013060397A JP 6029504 B2 JP6029504 B2 JP 6029504B2
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drain
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JP2014185802A (en
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寿久 斉藤
寿久 斉藤
優介 藤枝
優介 藤枝
吉田 輝
輝 吉田
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株式会社ガスター
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本発明は、燃焼排気から顕熱および潜熱を回収する潜熱回収型の熱源機に関する。 The present invention relates to a latent heat recovery type heat source machine for recovering sensible and latent heat from the combustion exhaust.

バーナーで加熱された空気(燃焼排気)から主に顕熱を回収する顕熱回収用熱交換器の下流に、排気の潜熱をさらに回収する潜熱回収用熱交換器を設けて熱回収効率を高めるように構成された潜熱回収型の給湯機などの熱源機がある。 Downstream of sensible heat recovery heat exchanger mainly for recovering sensible heat from air heated by a burner (combustion exhaust), increasing the heat recovery efficiency by providing a latent heat recovery heat exchanger for further recovery of the latent heat of the exhaust there is a heat source machine such as configured latent heat recovery type water heater as.

このような潜熱回収型の熱源機では、排気に含まれる水蒸気が潜熱回収時に結露して凝縮水(ドレン)が生じる。 In such a latent heat recovery type heat source machine, condensed water (drain) occurs water vapor contained in the exhaust gas and condensation during latent heat recovery. このドレンは、排気中の窒素酸化物や硫黄酸化物を吸収して酸性となる。 The drain is made acidic by absorbing nitrogen oxides and sulfur oxides in the exhaust. そのため、潜熱回収型の熱源機では、ドレンを回収し、中和器で中和した後、ドレン排出口から排水するようになっている。 Therefore, in the latent heat recovery type heat source machine, after recovering the drain, and neutralized with the neutralizer, so as to drain from the drain outlet.

通常、中和器は、水封構造を備えた容器の中に中和剤を入れて構成される。 Usually, neutralizer is configured to put a neutralizing agent in a vessel equipped with a water seal structure. 中和器にドレンが溜まって水封された状態では、排気が中和器を通ってドレン排出口から外部へ漏れ出ることはない。 In a state where the drain is water-sealed accumulated in neutralizer, exhaust does not leak to the outside from the drain outlet through the neutralizer. しかし、工場出荷時は中和器は乾燥した状態にされており、内部にドレンがなく、水封されていないので、熱源機を設置した後、そのまま最初の運転を行うと、排気が中和器を通って外部へ漏れ出てしまう。 However, factory neutralizer is in dry state, no drain inside, because they are not water seal, after the setting of the heat source apparatus, when it performs the first operation, the exhaust gas is neutralized from leaking to the outside through the vessel. ドレン排出口から漏れた排気は、周囲の者に不快感を与えるだけでなく、結露すると酸性のドレンを発生させるので、パイプシャフトなどに熱源機が設置されて、配管やガスメータなどが近くにあると、これらを腐食させてしまう。 Exhaust gas leakage from the drain outlet, as well as discomfort around the person, because to generate acidic drainage and condensation, such as the heat source machine is installed pipe shaft, such as piping and gas meter is near When, thus corrode them.

そこで、設置後の運転開始前に作業者が中和器に水を入れて水封状態を確保する、といった作業を設置手順に規定することが行われる。 Therefore, it is performed to define the operator before starting operation after installation to ensure water sealing state put water into neutralizer, a work such as the installation procedure.

また、特許文献1には、給水管から分岐させた注水配管を中和器に接続し、該注水配管の途中に設けた電磁弁を開くことで中和器へ注水できるようにした給湯機が開示されている。 In Patent Document 1, a water injection pipe is branched from the water supply pipe connected to the neutralizer, infusion water water heater has to be water injection into the neutralizer by opening the electromagnetic valve provided in the middle of the piping It has been disclosed. この給湯機では中和器の水封が確保されるまで燃焼を禁止するように制御している。 And are controlled as in this water heater prohibits burn until the water sealing of the neutralizer is ensured.

なお、下記特許文献2には、潜熱回収用熱交換器を通る水管がドレンによって腐食されて孔が開いた場合でも、この孔から漏れた水がドレンパンに回収され中和器を通って排水されてしまうので腐食に気付かないという課題を解決するために、中和器の上流側のドレン配管の途中に、該ドレン配管を流れる水の量を検出する水量センサを設けた給湯機が開示されている。 Incidentally, in Patent Document 2, even if the water pipe through a latent heat recovery heat exchanger the punched been corroded by drain water that has leaked from the hole is drained through the neutralizer is collected in the drain pan to solve the problem of not notice corrosion since the results, in the middle of the upstream side of the drain pipe of the neutralizer, water heater provided with a water sensor which detects the amount of water flowing through the drain pipe is disclosed there. この水量センサは、底部に絞りを有する溜め空間と、溜め空間内で上下するフロートと、フロートの位置を検出するセンサとを有して構成される。 The water sensor includes a reservoir space having a diaphragm in the bottom, and the float up and down in the reservoir space, and having a sensor for detecting the position of the float.

特開2009−109085号公報 JP 2009-109085 JP 特開2002−147847号公報 JP 2002-147847 JP

設置後の運転開始前に作業者が中和器に水を入れることを設置手順に規定しても、作業者のミスや懈怠によりこの作業が実施されない恐れがある。 Even the operator before starting operation after installation defined installation procedures to put water into neutralizer by operator error or negligence may cause this task is not performed. 一方、特許文献1に開示されたように注水配管や電磁弁を設けると、熱源機の製造コストが嵩む。 On the other hand, the provision of the water injection pipe and the solenoid valve as disclosed in Patent Document 1, increase the cost of manufacturing the heat source apparatus.

特許文献2に開示された水量センサは、ドレンが流れないときはフロートが下がって絞りに蓋をするので、中和器が水封されていない状態において排気が絞りから中和器を通って外部へ漏れ出ることを防ぐ役割を果たす。 Water sensor disclosed in Patent Document 2, since the cover to stop down the float when the drain does not flow, the outside through the neutralizer from exhaust throttle in a state where the neutralizer is not water-sealed It serves to prevent the leakage of to. しかし、ドレンパンに溜まったゴミや土埃などがドレンと共にドレン配管へ流入すると、絞りが直ぐに詰まってしまうという問題がある。 However, when the dust and dust that has accumulated in the drain pan flows into the drain pipe with the drain, there is a problem that the aperture is clogged immediately.

本発明は、上記の問題を解決しようとするものであり、水封される前のドレン排出路を通じて排気が外部へ漏れ出ることを防止することのできる潜熱回収型の熱源機を提供することを目的としている。 The present invention is intended to solve the above problems, to provide a latent heat recovery type heat source machine capable of preventing the exhaust through drainage passage before being water seal leaks to the outside it is an object.

かかる目的を達成するための本発明の要旨とするところは、次の各項の発明に存する。 It is a gist of the present invention for achieving the above object resides in the invention in the following sections.

[1]燃焼部と、 [1] and the combustion section,
前記燃焼部の排気から顕熱および潜熱を回収する熱交換器と、 A heat exchanger for recovering sensible and latent heat from the exhaust of the combustion section,
前記熱交換器で生じたドレンを回収するドレン回収部と、 A drain recovery unit for recovering the drain generated in the heat exchanger,
前記ドレン回収部で回収されたドレンを外部へ排出するドレン排出路と、 A drain discharge passage for discharging the drain water recovered in the drain recovery unit to the outside,
前記ドレン排出路の途中に設けられた水封部と、 A water sealing portion provided in the middle of the drainage channel,
前記水封部の水封完了時の出側の水面より下流側における該水封部の容器内通路または該水封部の出口または該水封部より下流側の前記ドレン排出路を封鎖する水溶性の封鎖材と、 Water to block the drainage passage downstream of the outlet or the water seal portion of the container in the passage or the water seal portion of the water seal portion on the downstream side of the water surface of the delivery side during water seal completion of the water seal portion and sex of sealants,
を有し、 Have,
工場出荷後の燃焼で生じるドレンで前記水封部における水封が完了した後に前記ドレンによって前記封鎖材が溶けて前記封鎖が解除される ことを特徴とする潜熱回収型の熱源機。 Latent heat recovery type heat source machine, characterized in that the blocked with drain occurring in the combustion after the factory shipment said sequestering material is melted by drainage after the water sealing is completed in the water seal portion is released.

上記発明では、工場出荷時に水封部の出口等を水溶性の封鎖材で封鎖しておくだけで、水封部が水封されていない状態のままで設置後に熱源機の運転が開始されても、排気がドレン排出路を通じて外部へ流出することが阻止されると共に、水封完了後は水封部から溢れ出たドレンによって封鎖材が溶けて封鎖が自動的に解除されるので、ドレン排出路を通じたドレンの排水が確保される。 In the above invention, only keep blocking the outlet or the like of the water sealing portion in a water-soluble sequestering material factory, and the operation of the heat source apparatus is started after installation in the state where water sealing part is not water-sealed also, the exhaust gas with it is prevented from flowing out to the outside through the drainage passage, since after the water seal complete blockade for melting sealants by overflowing drain from the water sealing portion is automatically released, drainage wastewater drainage through the road is ensured.

[2]前記水封部は、中和剤が入れられて、前記ドレンを中和する中和器の機能を果たす ことを特徴とする[1]に記載の潜熱回収型の熱源機。 [2] The water seal portion, the neutralizing agent is placed, latent heat recovery type heat source machine according to [1], wherein the act of neutralizer to neutralize the drain.

上記発明では、水封部は中和器の機能を兼ねる。 In the above invention, the water sealing section also serves the function of a neutralizer.

[3]前記封鎖材は、僅かな通気性を備えた水溶性の紙である ことを特徴とする[1]または[2]に記載の潜熱回収型の熱源機。 [3] The sequestering material, characterized in that it is a water-soluble paper having a slight air permeability [1] or latent heat recovery type heat source machine according to [2].

上記発明では、水封完了後に水封部内の水位が上昇するとき、出口が封鎖材で封鎖されているために内圧が上昇するが、封鎖材の僅かな通気によって過度の内圧上昇が抑制され、水位の上昇を妨げない。 In the above invention, when the water level in the water seal portion after the water seal completed increases, but the internal pressure rises to the outlet is blocked with sealants, excessive increase in internal pressure by a slight venting of the sealants is suppressed, It does not interfere with the rise of the water level. なお、通気性を「僅か」とすることで、水封前に排気が封鎖材を通じて顕著に漏れ出ることはない。 Note that by breathability and "slightly", the exhaust before the water seal will not leave significant leaks through sealants.

[4]前記封鎖材は、水溶性の紙の一方の面にガスバリア性を有する水溶性物質の膜が形成されたものであり、前記膜を前記ドレン排出路の下流側に向けて取り付けられる ことを特徴とする[1]または[2]に記載の潜熱回収型の熱源機。 [4] The sealants are those films of water-soluble substance having a gas barrier property on one surface of a water-soluble paper is formed, it is mounted towards the membrane on the downstream side of the drainage channel the features [1] or latent heat recovery type heat source machine according to [2].

[5]前記封鎖材は、ガスバリア性を有する水溶性の物質で構成される ことを特徴とする[1]または[2]に記載の潜熱回収型の熱源機。 [5] The sealants are characterized by consisting of a water-soluble substance having a gas barrier property [1] or latent heat recovery type heat source machine according to [2].

[6]前記水封部の最高水位時の出側の水面から前記封鎖材までの間の通路に通気用細孔を設けた ことを特徴とする[1]、[2]、[4]または[5]に記載の潜熱回収型の熱源機。 [6], characterized in that a vent pores passage between the water surface of the outlet side at the maximum water level of the water seal portion to the sealants [1], [2], [4] or latent heat recovery type heat source machine according to [5].

上記発明では、ガスバリア性を有する(通気性のない)封鎖材を使用した場合において、水封完了後にさらに水封部内の水位が上昇するときの過度の内圧上昇が通気用細孔によって回避され、水封完了後の水位上昇が確保される。 In the above invention, in the case of using a gas barrier property (no breathable) sealants, excessive increase in internal pressure when further water level in the water sealing portion is raised after the water seal completion is avoided by pores for ventilation, level rise after water seal completed is ensured.

[7]前記通気用細孔が当該潜熱回収型の熱源機の本体内に開放されている ことを特徴とする[6]に記載の潜熱回収型の熱源機。 [7] The latent heat recovery type heat source machine according to the ventilation pores, characterized in that it is open to the body of the latent heat recovery type heat source apparatus [6].

上記発明では、水封前に通気用細孔から僅かに排ガスが漏れ出ても、熱源機の本体内に出るので、直接器具外へ排出する場合に比べて、周囲への影響を少なく抑えることができる。 In the above invention, even if leaks are slightly exhaust gas from the ventilation pores before water seal, because the leaves within the body of the heat source apparatus, as compared with the case of discharging directly instrument out, to suppress reduce the influence of the surrounding can.

[8]前記通気用細孔が当該潜熱回収型の熱源機の排気経路に開放されている ことを特徴とする[6]に記載の潜熱回収型の熱源機。 [8] the latent heat recovery type heat source machine according to the ventilation pores, characterized in that it is open to the exhaust path of the latent heat recovery type heat source apparatus [6].

上記発明では、通気用細孔を通じて逃がした空気や排ガスは排気経路を通じて外部へ排出される。 In the above invention, air and exhaust gas relief through pores for ventilation is discharged to the outside through the exhaust path.

本発明に係る潜熱回収型の熱源機によれば、水封される前のドレン排出路を通じて排気が外部へ漏れ出ることを防止することができると共に、水封完了後は自動的に封鎖が解除されてドレンの排水が確保される。 According to latent heat recovery type heat source machine according to the present invention, it is possible to prevent the leakage of the exhaust gas outside through before drainage passage being water seal, after the water seal is completed automatically blockade released are drained of the drain is secured.

本発明の実施の形態に係る熱源機の概略の構成を示す図である。 It is a diagram showing a schematic configuration of the heat source machine according to an embodiment of the present invention. 中和器の構成を示す図である。 It is a diagram showing a configuration of a neutralizer. 工場から出荷された熱源機を設置して最初に運転した際の中和器および封鎖材の状態変化を示す図である。 By installing a heat source unit that is shipped from the factory is a diagram showing the state change of the first neutralizer when drove in and sealants. 封鎖材の各種の取り付け位置を示す図である。 Is a diagram showing various mounting positions of the sealants. 熱源機の分解斜視図である。 It is an exploded perspective view of the heat source apparatus. 水封部の後室側の容器の上部に通気用細孔を設けた中和器の例を示す図である。 The top of the rear chamber side of the container of the water sealing portion is a diagram showing an example of a neutralizer provided with vent pores. 水封部の仕切り板に前室と後室とを連通させる通気用細孔を設けた中和器の例を示す図である。 It is a diagram illustrating an example of a neutralizer provided with ventilation pores communicating the front chamber and the rear chamber to the partition plate water sealing portion.

以下、図面に基づき本発明の実施の形態を説明する。 Hereinafter, an embodiment of the present invention based on the drawings.

図1は、本発明の実施の形態に係る熱源機3の概略の構成を示している。 Figure 1 shows a schematic configuration of the heat source apparatus 3 according to the embodiment of the present invention. 熱源機3は、給水を加熱して出湯する給湯機能を備えている。 Heat source apparatus 3 is provided with a hot water supply function for tapping by heating feed water. 熱源機3は、燃焼ガスを燃焼させるバーナー4と、バーナー4へ空気を送り込む燃焼ファン5と、バーナー4の上方に設置されてバーナー4で加熱された空気(燃焼排気)から主に顕熱を回収して給水を加熱する顕熱熱交換器6と、バーナー4からの空気の流れで顕熱熱交換器6の下流に配置され、主として排気の潜熱を回収して給水を加熱する潜熱熱交換器7を有する。 Heat source apparatus 3 includes a burner 4 to burn the combustion gas, the combustion fan 5 for feeding air to the burner 4 is installed above the burner 4 mainly sensible from the heated air (flue gas) with a burner 4 recovering the sensible heat exchanger 6 for heating the feedwater, arranged downstream of the air flow sensible heat exchanger 6 from the burner 4, the latent heat exchanger to heat the feed water to recover mainly the latent heat of the exhaust with a vessel 7.

熱源機3の内部にはさらに、上記のバーナー4、顕熱熱交換器6、潜熱熱交換器7を下からこの順に並べて収めた燃焼室8と、燃焼室8の上端に連通した排気筒9が設けてある。 Further inside the heat source apparatus 3, above the burner 4, the sensible heat exchanger 6, a combustion chamber 8 of the latent heat exchanger 7 matches are arranged in this order from the bottom, communicating with the upper end of the combustion chamber 8 chimney 9 It is provided.

潜熱熱交換器7の下方には、排気の潜熱を回収することで生じた酸性の凝縮水(ドレン)を受け止めて回収するための受け皿11が設けてある。 Below the latent heat exchanger 7, the pan 11 for recovering receiving condensed water acidic generated by recovering the latent heat of the exhaust (the drain) is provided. また、排気筒9の出口近傍の底部には、ドレン回収口12が設けてある。 Further, the bottom near the outlet of the exhaust pipe 9, drain recovery port 12 is provided. ドレン回収部(受け皿11およびドレン回収口12)で回収されたドレンはドレン排出管13を通じて排水される。 Drain recovered in the drain recovery unit (pan 11 and the drain recovery port 12) is drained through the drain discharge pipe 13. このドレン排出管13の途中には水封機能とドレンを中和する機能とを備えた中和器20が設けてある。 The midway of the drain discharge pipe 13 is neutralizer 20 is provided with a function to neutralize the water sealing function and drain. 工場出荷時の熱源機3には、中和器20の出口を封鎖する水溶性の封鎖材30が取り付けてある。 The heat source apparatus 3 factory, sealants 30 of a water-soluble sequestering outlet of neutralizer 20 is attached. また、工場出荷時は、中和器20の内部はドレンがなく乾燥した状態にされている。 Also, factory, inside the neutralizer 20 is the state in which the drain is dried without.

図2は、中和器20の構成をより詳細に示している。 Figure 2 shows the configuration of the neutralizer 20 in more detail. 中和器20は、水封機能を果たす水封部21(図2のグレー部分)と、水封部21の出口22に連通した排水用の通路を成す排水路部23とから構成される。 Neutralizer 20, water seal portion 21 to fulfill the water sealing function with (gray portion in FIG. 2), and a drainage portion 23 forming a passage for the waste water in communication with the outlet 22 of the water sealing portion 21. 水封部21は、中空の容器を、下部が連通するように仕切り板24で2室(前室25と後室26)に区切った構造をなしている。 Water sealing portion 21, a hollow vessel, the lower part forms a separated structure into two chambers by the partition plate 24 (front chamber 25 and rear chamber 26) so as to communicate.

前室25の上部には、中和器20より上流側のドレン排出管13aからドレンを受け入れるドレン入口27が設けてある。 The top of the front chamber 25, a drain inlet 27 for receiving a drain from the upstream side of the drainage pipe 13a from the neutralizer 20 are provided. ドレン入口27には、ドレン排出管13aの終端が接続されている。 The drain inlet 27, is connected the end of the drain discharge pipe 13a. 後室26の上部には中和したドレンを排出する前述の出口22が設けてある。 The upper portion of the rear chamber 26 is provided with a preceding outlet 22 for discharging the neutralized drain. この出口22に連通する排水路部23は、出口22から水封部21に沿って下方へ所定長だけ延設された中空筒状の通路を成すと共に、その下端には、中和器20より下流側のドレン排出管13bの始端を接続するための接続口28が設けてある。 Drainage unit 23 communicating with the outlet 22, together form a hollow cylindrical passage which extends a predetermined length downwards along the outlet 22 to the water sealing portion 21, in its lower end, from neutralizer 20 connection port 28 for connecting the starting end of the downstream side of the drain discharge pipe 13b is provided. 排水路部23とドレン排出管13bは水封部21より下流側のドレン排水路を構成する。 Drainage unit 23 and the drain discharge pipe 13b constitutes a downstream drainage drainage from water sealing portion 21.

水封部21の出口22はドレン入口27より低い位置にされている。 Outlet 22 of the water seal portion 21 is located lower than the drain inlet 27. また排水路部23の下端の接続口28は、出口22より低い位置にされている。 The lower end of the connecting port 28 of the drainage channel 23 is at a position lower than the outlet 22. なお、本例では、中和器20は、ドレン入口27および接続口28の各開口を除いて、気密に構成されている。 In the present embodiment, the neutralizer 20, except for the opening of the drain inlet 27 and the connecting port 28, and is airtight.

水封部21の前室25および後室26には、凝縮水を中和するための中和剤29が装填されている。 The front chamber 25 and rear chamber 26 of the water seal portion 21, the neutralizing agent 29 for neutralizing condensed water is loaded. 中和剤29は、炭酸カルシウムなどであり、直径1cmほどの豆粒大の粒状を成している。 Neutralizing agent 29, and the like calcium carbonate forms a pea-sized particulate diameter of about 1 cm. ドレン入口27から流入したドレンは、水封部21の前室25および後室26に装填された多数の粒状の中和剤29の隙間を通る際に中和される。 Drain that has flowed from the drain inlet 27 is neutralized as it passes a number of gaps of the neutralizing agent 29 of particulate loaded in front chamber 25 and rear chamber 26 of the water sealing portion 21.

工場出荷時点では、中和器20の排水路部23の下端の接続口28に、該接続口28を封鎖する封鎖材30が取り付けてある。 The factory time, the lower end of the connecting port 28 of the drainage channel 23 of the neutralizer 20, sequestering material 30 to seal the connecting port 28 is attached. 封鎖材30は、僅かな通気性を有する水溶性の紙である。 Sealants 30 is a water-soluble paper having a slight air permeability.

次に、封鎖材30の作用について説明する。 Next, the operation of the blockade member 30.

図3は、工場から出荷された熱源機3を設置して最初に運転した際の中和器20および封鎖材30の状態変化を示している。 Figure 3 shows the state change of the neutralizer 20 and sealants 30 when initially operated by installing a heat source apparatus 3 shipped from the factory.

工場出荷時は、図3(a)に示すように、中和器20の内部は、ドレンが空で乾燥した状態にされている。 Factory, as shown in FIG. 3 (a), the interior of the neutralizer 20 is the state in which the drain is dried in air. この状態で運転を開始すると、排気の一部がドレン排出管13aを通じて中和器20側へ流れ込もうとするが、中和器20の出口が封鎖材30で封鎖されているので、流れ込みはほとんどなく、かつまた、ドレン排出管13bを通じて外部へ排気が流出することも阻止される。 When starting the operation in this state, a part of the exhaust gas is going flow into the neutralizer 20 side through the drain discharge pipe 13a, since the outlet of the neutralizer 20 is blocked by the blockade member 30, flows the little, and also is prevented that the exhaust to the outside flows through the drain discharge pipe 13b. なお、封鎖材30がなければ、排気の一部がドレン排出管13を通じて外部へ流出してしまい、背景技術の項で説明したような不具合を生じさせる。 If there is no sealants 30, part of the exhaust gas ends up flowing out to the outside through the drain discharge pipe 13, causing a malfunction as described in the background section. 図3(a)の破線は、封鎖材30を設けない場合の排気の流れを示している。 Broken line in FIG. 3 (a) shows the flow of exhaust case without the blockade member 30.

熱源機3の運転を継続すると、ドレンが中和器20の水封部21に溜まりはじめる。 With continued operation of the heat source apparatus 3, the drain begins accumulates in water sealing portion 21 of the neutralizer 20. そして、図3(b)に示すように、中和器20の水封部21内の水位が上昇して水封部21がドレンによって水封された状態になると、以後は、この水封によって排気がドレン排出管13を通じて外部へ流出することが阻止される。 Then, as shown in FIG. 3 (b), when the water sealing portion 21 water level water sealing portion 21 of the neutralizer 20 rises and becomes a state of being water-sealed by the drain, is hereinafter this water seal exhaust it is prevented to flow to the outside through the drain discharge pipe 13.

その後さらに運転を続けてドレンが中和器20へ流入し続けると、図3(c)に示すように、水封部21の出口22からドレンが溢れて排水路部23へ流出する。 When then drain further continued operation continues to flow into the neutralizer 20, as shown in FIG. 3 (c), it flows out overflow drain from the outlet 22 of the water sealing portion 21 to the drainage channel 23. すると、出口22から流出したドレンで濡れた封鎖材30が溶け始め、しばらくすると、図3(d)に示すように、封鎖材30が破れて封鎖が解除される。 Then, start to melt sealants 30 which is wet with the drain flowing out of the outlet 22, after a while, as shown in FIG. 3 (d), sealants 30 blockade is canceled torn. これにより、水封部21から溢れたドレンがドレン排出管13bを通じて外部へ排出される。 Accordingly, drain water overflowing from the water sealing portion 21 is discharged to the outside through the drain discharge pipe 13b.

このように、工場出荷時に、中和器20の出側を水溶性の封鎖材30で封鎖しておくだけで、中和器20が水封されていない状態のままで設置後に熱源機3の運転が開始されても、排気がドレン排出管13を通じて外部へ流出することが阻止される。 Thus, at the factory, just keep sealed the outlet side of the neutralizer 20 at sealants 30 of a water-soluble, neutralizer 20 is the heat source apparatus 3 after installation in the state that are not water-sealed operation even been started, it is prevented that the exhaust gas flows out to the outside through the drain discharge pipe 13. また、水封完了後に中和器20から溢れ出たドレンによって封鎖材30が溶けて封鎖が自動的に解除されるので、ドレン排出管13を通じたドレンの排水が確保される。 Also, since the sequestering melts blockade member 30 by overflowing drain from neutralizer 20 after water seal completed is automatically released, the drainage of the drain through the drain discharge pipe 13 is secured.

したがって、設置後の運転開始前に作業者が中和器に水を入れて水封状態を確保する、といった作業が不要になる。 Therefore, the worker before starting operation to ensure the water sealing state put water into neutralizer after installation, operations such is not required. また、作業者に手動で水を入れさせる場合には、中和器に水位センサを設け、水封完了前の運転を禁止したり、水の入れ忘れを警告したりする等の対策を講じるべきであるが、本実施の形態の熱源機3では封鎖材30を設けることで、そのような対策も一切不要になる。 Also, when the manually causes put water into the operator, a water level sensor provided in the neutralizer, or prohibit the operation of the prior water seal completed, it should take measures such or warns forgot water the case, by providing the heat source apparatus 3, sealants 30 of the present embodiment, it becomes not require any such measures. あるいは、給水管から分岐させた注水配管を中和器に接続し、該注水配管の途中に設けた電磁弁を開くことで中和器へ自動的に注水する、といった構成も不要になる。 Alternatively, a water injection pipe is branched from the water supply pipe connected to the neutralizer, automatically water injection into the neutralizer by opening the electromagnetic valve provided in the middle of the infusion water piping, structure becomes unnecessary, such as.

封鎖材30は、僅かな通気性を有する水溶性の紙で形成されている。 Sealants 30 is formed of a water-soluble paper having a slight air permeability. 図3(b)に示す状態(水封完了時)から図3(c)に示す状態へと水封部21内のドレンの水位が上昇すると、出側(後室26側)のドレンの水面から封鎖材30までの空間の容積が次第に減少して内圧が上昇し、封鎖材30を構成する紙の目の間から空気が少しずつ外部へ漏れ出る。 Figure 3 when the water level of the drain of the water sealing portion 21 is increased from (b) the state shown in (when the water sealing completed) to the state shown in FIG. 3 (c), the water surface of the drain of the outlet side (rear chamber 26 side) pressure volume gradually decreases and the space up to sealants 30 is raised from the air from between the paper eye constituting the sealants 30 leaks out to the outside bit by bit. これにより、ドレン入口27および接続口28を除いて気密に構成された中和器20においても、過度の内圧上昇が抑えられて、水位の上昇が妨げられない。 Thus, even in the neutralizer 20 constructed airtight except for drain inlet 27 and the connecting port 28, an excessive increase in internal pressure is suppressed, the increase in water level is unrestricted.

僅かな通気性は紙の繊維間の隙間によって確保されるが、微細な孔をもうけてもよく、上記のように水位の上昇を阻止しない程度に僅かの通気性があればよい。 Slight breathability is ensured by the gap between paper fibers may be provided with fine holes, or if there is a slight breathable so as not to block the rise in water level as described above. たとえば、20mmH 2 O未満の気圧ではほとんど通気がなく、20mmH 2 O以上、たとえば、30mmH 2 Oから50mmH 2 Oで、上記した水位の上昇を妨げないほどの通気性が確保されることが望ましい。 For example, there is little ventilation in 20 mm H 2 O less than atmospheric pressure, 20 mm H 2 O or more, e.g., at 50 mm H 2 O from 30mmH 2 O, it is desirable that the breathable enough not to interfere with the rise of the water level above is ensured.

なお、封鎖材30に到達する排気の圧力は最大で約20mmH 2 O程度なので、それに室内負圧(たとえば、ドアの開け閉めによる負圧で、約−20mmH 2 Oと想定される)を考慮し、100mmH 2 O程度で封鎖材30が破れるなどして封鎖材30による封鎖(気密)が破壊されないようにしてある。 The pressure of the exhaust gas reaching the sequestering material 30 is the maximum at the about 20 mm H 2 O of about, indoor negative pressure (e.g., a negative pressure by opening and closing of the door is assumed to be about -20mmH 2 O) Considering , blockade sealants 30 with such sealants 30 is broken at 100 mm H 2 O of about (airtight) is are then prevented from being destroyed. 具体的には、封鎖材30の材質や厚み、取り付け方などを上記の条件に適合するようにしてある。 Specifically, the material and thickness of the sealants 30, Attaching the like are to conform to the above conditions. 後に説明する他の種類の封鎖材30についても同様である。 The same applies to other types of sealants 30 to be described later.

図4は、封鎖材30の各種の取り付け位置を示している。 Figure 4 shows the various mounting positions of the blockade member 30. 封鎖材30は、水封部21の出口22を封鎖するように設ける(図中の取り付け位置A)、排水路部23の任意の箇所を封鎖するように設ける(たとえば、図中の取り付け位置B)、中和器20の接続口28を封鎖するように設ける(図中の取り付け位置C)、中和器20より下流のドレン排出管13bの任意の箇所を封鎖するように設ける(たとえば、図中の取り付け位置D)ことができる。 Sealants 30 is provided so as to seal the outlet 22 of the water sealing portion 21 (mounting position A in the drawing), provided so as to seal any portion of the drain passage 23 (e.g., the attachment of FIG position B ), provided so as to seal the connecting port 28 of the neutralizer 20 (mounting position in FIG. C), provided so as to block the anywhere from neutralizer 20 downstream of the drain discharge pipe 13b (e.g., FIG. can mounting position D) that in.

また、水封部21に中和剤29を投入しない場合や投入量が少ない場合には、水封完了時の出側(後室26)のドレンの水面S(水面が仕切り板24の下端に達した位置)より下流側における水封部21の容器内通路(図中の取り付け位置Eなど)に封鎖材30を設けてもよい。 Further, if or when input amount is not charged with a neutralizing agent 29 to the water sealing portion 21 is small, the water surface S (the water level of the partition plate 24 the lower end of the drain of the water seal upon completion of the outgoing side (rear chamber 26) It reaches a position) from the container in the path of the water sealing portion 21 on the downstream side (may be provided sealants 30, etc. mounting position E) in FIG. 要するに水面Sより下流であれば任意の箇所に封鎖材30を取り付けてよい。 In brief may blockade member 30 mounted anywhere as long as downstream water surface S.

次に、ガスバリア性を有する封鎖材30を使用する場合について説明する。 Next, the case of using a sequestering material 30 having a gas barrier property.

ガスバリア性を有する(言い換えると、通気性のない)封鎖材30には、代表的構成として以下の2種類がある。 Having gas barrier properties (in other words, no air permeability) The sealants 30, there are two types as a representative configuration.

(1)水溶性の紙の一方の面にガスバリア性を有する水溶性物質の膜を、貼り付ける、塗布する等により形成して封鎖材30を構成する。 (1) a film of water-soluble substance having a gas barrier property on one surface of a water-soluble paper, paste, constituting the sealants 30 are formed such as by coating.
この場合、封鎖材30は水溶性物質の膜(薄膜)が形成されている方の面をドレン排出経路の下流側に向けて取り付ける。 In this case, the sealing member 30 is attached to face towards the film of the water-soluble substance (films) are formed toward the downstream side of the drainage path. この構成の封鎖材30では、紙の部分で排気圧等に耐える強度を確保する。 In sealants 30 in this configuration, to ensure the strength to withstand the exhaust gas pressure or the like in the portion of the paper. そして、紙の部分がドレンで溶けると、ガスバリア性の膜が水圧で直ぐに破れるようにされている。 When the piece of paper is melted by a drain, gas barrier properties of the film is to immediately break hydraulically. なお、ガスバリア性の膜を水溶性とすることで、破れた膜が排水経路を詰まらせることが防止される。 Note that by the gas barrier properties of the film and the water-soluble, torn film is prevented from clogging the drainage path.

ガスバリア性のある水溶性物質としては、でんぷん(オブラート)、カラーギナン、寒天、プルラン、キタンサンガム、ペクチン、アラビノガラクタン、レゾール型フェノール樹脂、メチロール化ユリア(尿素)樹脂、メチロール化メラミン樹脂、ポリビニルアルコール、ポリエチレンオキシド、ポリアクリルアミド、カルボキシメチルセルロース等がある。 The water-soluble substance having a gas barrier property, starch (oblate), carrageenan, agar, pullulan, xanthan gum, pectin, arabinogalactan, resol type phenolic resins, methylolated urea (urea) resins, methylolated melamine resins, polyvinyl alcohol, polyethylene oxide, polyacrylamide, carboxymethylcellulose and the like.

(2)ガスバリア性を有する水溶性の物質で封鎖材30を構成する。 (2) constituting the sealants 30 a water-soluble substance having a gas barrier property.
水溶性物質(たとえば、ポリビニルアルコール)を射出成型して水封部21の出口22やドレン排出管13bなどを封鎖する。 Water-soluble substance (e.g., polyvinyl alcohol) injection molded to the sequestering like outlet 22 and the drain discharge pipe 13b of the water sealing portion 21. また、封鎖材30としての水溶性物質の薄膜(たとえば、フィルム状、シート状)を、前述した水面Sより下流の容器内通路や中和器20の出口(接続口28)に挟み込む。 Further, a thin film of water soluble materials as sealants 30 (e.g., film, sheet) and, sandwiched outlet (connection port 28) downstream of the container passageway and neutralizer 20 from the water surface S described above. たとえば、図5に示すように、中和器20の出口の接続口28に、ドレン排出管13bとしてのゴムホース41を外嵌させてバンド42で固定するが、このとき、接続口28とゴムホース41との間に封鎖材30としての水溶性物質の薄膜を挟んでゴムホース41を差し込むようにすれば、簡単に封鎖材30を取り付けることができる。 For example, as shown in FIG. 5, the outlet connection port 28 of the neutralizer 20 and fixed with a band 42 by externally fitted rubber hose 41 as the drain discharge pipe 13b, this time, the connection port 28 and the rubber hose 41 sandwiching a thin film of water-soluble substance as sealants 30 between when to insert the rubber hose 41 can be attached easily sealants 30. あるいは、前述した水面Sより下流の容器内通路や中和器20の出口(接続口28)などに封鎖材30としての水溶性物質の薄膜をヒートシール(熱溶着)させてもよい。 Alternatively, it may be a thin film of water soluble material is heat sealed (heat welded) as sealants 30, etc. outlet (connection port 28) of the water surface S described above and downstream of the container passage neutralizer 20.

ガスバリア性を有する封鎖材30で封鎖する場合、水封完了後の水封部21内の水位上昇に伴って容器内の空気を封鎖材30を通じて外部へ逃がすことができない。 If blocking by the blockade member 30 having gas barrier properties, can not escape to the outside through the sealants 30 The air in the vessel with the water level rising in the water seal portion 21 after water seal completion. そこで、水封部21の後室26側の最高水位時の水面から封鎖材30までの空間を形成する容器のいずれかの箇所に通気用細孔44(図6参照)を設ける、あるいは上記部分の容器が気密にならないように隙間を設ける。 Therefore, providing the venting pores 44 (see FIG. 6) in any position of the container to form a space up to sealants 30 from the water surface at the maximum water level of the rear chamber 26 side of the water sealing portion 21, or the partial of the container is provided with a gap so as not to be airtight. なお、最高水位より低い箇所に通気用細孔44を設けると、その部分からドレンが漏れ出たり、通気用細孔44より水位が高くなると空気を逃がすことができなくなったりする。 Incidentally, when providing a vent pores 44 lower than the highest water level position, or leak is drained from the portion, or can no longer escape the water level is higher than the ventilating pores 44 air.

図6は、水封部21の後室26側の容器の上部に通気用細孔44を設けた例を示している。 Figure 6 shows an example in which the ventilation pores 44 on the top of the container rear chamber 26 side of the water sealing portion 21. この通気用細孔44は熱源機3の本体内に開口されている。 The venting pores 44 are open to the body of the heat source apparatus 3. 水封完了前の熱源機3の運転中は、通気用細孔44を通じて、極めて僅かであるが、排ガスが外部へ漏れることになる。 During operation of the water seal before completion of the heat source unit 3, through vent pores 44, is a very slight, so that the exhaust gas from leaking to the outside. そこで、図6に示すような位置に通気用細孔44を設ける場合は、熱源機3は屋外設置式であることが望ましい。 Therefore, the case of providing the ventilation pores 44 in the position shown in FIG. 6, it is desirable heat source apparatus 3 is installed outdoors type. また、通気用細孔44は熱源機3の本体内に開口されているので、たとえば、熱源機3がパイプシャフトに設けられた場合でも、通気用細孔44からの排ガスが直接、パイプシャフト内に流れ出ないので、パイプシャフト内のガス管等を腐食させることがない。 Moreover, since the vent pores 44 are open to the body of the heat source apparatus 3, for example, even when the heat source equipment 3 is provided on the pipe shaft, the exhaust gas directly from the vent pores 44, the pipe shaft does not flow out to, it does not corrode the gas pipe or the like in the pipe shaft.

一方、熱源機3が屋内設置式の場合には、通気用細孔44を通じて、排ガスが室内に僅かでも漏れないようにすることが望ましい。 On the other hand, when the heat source apparatus 3 is an indoor installation type, through vent pores 44, it is desirable to exhaust gas from leaking even slightly into the room. そこで、通気用細孔44を熱源機3の排気経路に開放する。 Therefore, to open the vent pores 44 in the exhaust path of the heat source apparatus 3. たとえば、図7に示すように、最高水位より高い位置の仕切り板24に前室25と後室26とを連通させる通気用細孔45を形成すると、通気用細孔45を通じた排ガスの出口が排気経路に開放されることになる。 For example, as shown in FIG. 7, to form a front chamber 25 and rear chamber 26 and the ventilation pores 45 for communicating to the partition plate 24 is higher than the highest water level position, the outlet of the exhaust gas through the vent pores 45 It will be open to the exhaust path. この構成では、水封完了前の熱源機3の運転中に排ガスが外部に漏れ出ることはない。 In this configuration, the exhaust gas during operation of the water seal before completion of the heat source unit 3 does not leak to the outside. また、水封完了後は、中和器20内の水位が上昇する際に後室26内の空気が通気用細孔45を通じて前室25側へ移動し、ドレン排出管13aおよび排気筒9を通じて外部へ排出される。 Further, after the water seal is completed, the air in the rear chamber 26 when the water level in the neutralizer 20 rises moves to the front chamber 25 side through the ventilation pores 45 through the drain discharge pipe 13a and the exhaust pipe 9 It is discharged to the outside.

なお、仕切り板24に通気用細孔45を設ける代わりに、たとえば、図6の通気用細孔44を設け、該通気用細孔44の出口を管等でドレン入口27あるいはドレン排出管13aに連通させるようにしてもよい。 Instead of providing the ventilation pores 45 in the partition plate 24, for example, the ventilation pores 44 in FIG. 6 is provided, the drain inlet 27 or the drain discharge pipe 13a to the outlet of the vent for the pores 44 in the pipe or the like it may be communicating.

図5では、仕切り板24に通気用細孔45が設けてあり、該通気用細孔45を通じて後室26側の空気が前室25へ入り、さらにドレン入口27、ドレン排出管13aを通じて排気筒9から排出されるまでの経路を破線の矢印で示してある。 In Figure 5, is provided with a ventilation pores 45 in the partition plate 24, enters the rear chamber 26 side of the air pre-chamber 25 through the vent for pores 45, exhaust stack further drain inlet 27, through the drain discharge pipe 13a 9 is shown a route to be discharged by the dashed arrows from.

以上のように、本実施の形態の熱源機3では、水封部21の水封完了時の出側(後室26側)の水面より下流側における該水封部21の容器内通路または該水封部21の出口22または水封部22より下流側のドレン排出路(排水路部23やドレン排出管13b)を封鎖するように水溶性の封鎖材30を工場出荷時に取り付けておくので、水封部21が水封される前の運転でドレン排出管13を通じて排気が外部へ漏れ出ることが防止される。 As described above, in the heat source unit 3 of this embodiment, water sealing portion 21 of the water seal upon completion of the outgoing side (rear chamber 26 side) water vessel passage or said the seal portion 21 on the downstream side of the surface of the water since permanently installing sealants 30 of a water-soluble factory to sequester from the outlet 22 or the water seal 22 of the water sealing portion 21 downstream drainage passage of the (drainage unit 23 and the drain discharge pipe 13b), water sealing section 21 exhaust is prevented from leaking to the outside through the drainage pipe 13 in operation before being water seal. また、水封完了後は、水封部21から溢れ出たドレンで封鎖材30が溶けて封鎖が自動的に解除されるので、中和器20から溢れるドレンを、ドレン排出管13bを通じて円滑に排出することができる。 Further, after the water seal is completed, since blockade melts blockade member 30 by a drain overflowing from a water sealing part 21 is automatically released, the drain overflowing from the neutralizer 20, smoothly through the drain discharge pipe 13b it can be discharged.

以上、本発明の実施の形態を図面によって説明してきたが、具体的な構成は実施の形態に示したものに限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although the embodiments of the present invention has been described in conjunction with the drawings, specific configurations are not limited to those shown in the preferred embodiments, there are additional modifications and without departing from the scope of the present invention also included in the present invention.

実施の形態で示した封鎖材30は例示であり、水溶性であれば、他の素材で構成されてもよい。 Sequestering material 30 shown in the embodiments are examples, if water soluble, may be constituted by other materials. また、膜状やシート状、フィルム状でなくてもよく、短時間で水に溶解するならば塊状の詰め物等であってもよい。 Further, film or sheet, may not be a film-like, or may be a wadding or the like massive if a short time to dissolve in water.

実施の形態では水封部21に中和剤29を入れて、水封部21を中和器20として兼用するようにしたが、ドレンを中和する中和器と水封部を別々に設けてもかまわない。 Put a neutralizing agent 29 to the water sealing portion 21 in the embodiment, although double as a water sealing section 21 as the neutralizer 20 is provided with a neutralizer and water sealing part to neutralize the drain separately and it may be.

熱源機3は、給湯機に限定されず暖房機や乾燥機などでもよい。 Heat source apparatus 3 may be like heater or a dryer is not limited to the water heater.

3…熱源機 4…バーナー 5…ファン 6…顕熱熱交換器 7…潜熱熱交換器 8…燃焼室 9…排気筒 11…受け皿 12…ドレン回収口 13、13a、13b…ドレン排出管 20…中和器 21…水封部 22…出口 23…排水路部 24…仕切り板 25…前室 26…後室 27…ドレン入口 28…接続口 29…中和剤 30…封鎖材 41…ゴムホース 42…バンド 44…通気用細孔 45…通気用細孔 A〜E…封鎖材の取り付け位置 S…水封完了時の水面 3 ... heat source apparatus 4 ... burners 5 ... fan 6 ... sensible heat exchanger 7 ... latent heat exchanger 8 ... combustion chamber 9 ... exhaust pipe 11 ... pan 12 ... drain recovery port 13, 13a, 13b ... drain discharge pipe 20 ... neutralizer 21 ... water sealing portion 22 ... exit 23 ... drain channel section 24 ... partition plate 25 ... front chamber 26 ... rear chamber 27 ... drain inlet 28 ... connecting port 29 ... neutralizer 30 ... sealants 41 ... rubber hose 42 ... band 44 ... water during mounting position S ... water seal complete ventilation pores 45 ... ventilation pores a-E ... sealants

Claims (8)

  1. 燃焼部と、 And the combustion section,
    前記燃焼部の排気から顕熱および潜熱を回収する熱交換器と、 A heat exchanger for recovering sensible and latent heat from the exhaust of the combustion section,
    前記熱交換器で生じたドレンを回収するドレン回収部と、 A drain recovery unit for recovering the drain generated in the heat exchanger,
    前記ドレン回収部で回収されたドレンを外部へ排出するドレン排出路と、 A drain discharge passage for discharging the drain water recovered in the drain recovery unit to the outside,
    前記ドレン排出路の途中に設けられた水封部と、 A water sealing portion provided in the middle of the drainage channel,
    前記水封部の水封完了時の出側の水面より下流側における該水封部の容器内通路または該水封部の出口または該水封部より下流側の前記ドレン排出路を封鎖する水溶性の封鎖材と、 Water to block the drainage passage downstream of the outlet or the water seal portion of the container in the passage or the water seal portion of the water seal portion on the downstream side of the water surface of the delivery side during water seal completion of the water seal portion and sex of sealants,
    を有し、 Have,
    工場出荷後の燃焼で生じるドレンで前記水封部における水封が完了した後に前記ドレンによって前記封鎖材が溶けて前記封鎖が解除される ことを特徴とする潜熱回収型の熱源機。 Latent heat recovery type heat source machine, characterized in that the blocked with drain occurring in the combustion after the factory shipment said sequestering material is melted by drainage after the water sealing is completed in the water seal portion is released.
  2. 前記水封部は、中和剤が入れられて、前記ドレンを中和する中和器の機能を果たす ことを特徴とする請求項1に記載の潜熱回収型の熱源機。 The water seal portion, the neutralizing agent is placed, latent heat recovery type heat source machine according to claim 1, characterized in that functions of neutralizer to neutralize the drain.
  3. 前記封鎖材は、僅かな通気性を備えた水溶性の紙である ことを特徴とする請求項1または2に記載の潜熱回収型の熱源機。 The sealants may latent heat recovery type heat source machine according to claim 1 or 2, characterized in that a water-soluble paper having a slight air permeability.
  4. 前記封鎖材は、水溶性の紙の一方の面にガスバリア性を有する水溶性物質の膜が形成されたものであり、前記膜を前記ドレン排出路の下流側に向けて取り付けられる ことを特徴とする請求項1または2に記載の潜熱回収型の熱源機。 The sealants are those films of water-soluble substance having a gas barrier property on one surface of a water-soluble paper is formed, and characterized in that it is attached towards the membrane on the downstream side of the drainage channel latent heat recovery type heat source machine according to claim 1 or 2.
  5. 前記封鎖材は、ガスバリア性を有する水溶性の物質で構成される ことを特徴とする請求項1または2に記載の潜熱回収型の熱源機。 The sealants may latent heat recovery type heat source machine according to claim 1 or 2, characterized in that consists of water-soluble substance having a gas barrier property.
  6. 前記水封部の最高水位時の出側の水面から前記封鎖材までの間の通路に通気用細孔を設けた ことを特徴とする請求項1、2、4または5に記載の潜熱回収型の熱源機。 Latent heat recovery type according to claim 1, 2, 4 or 5, characterized in that a vent pores passage between the water surface of the outlet side at the maximum water level of the water seal portion to the sealants of the heat source equipment.
  7. 前記通気用細孔が当該潜熱回収型の熱源機の本体内に開放されている ことを特徴とする請求項6に記載の潜熱回収型の熱源機。 Latent heat recovery type heat source machine according to claim 6, characterized in that the ventilation pores are open to the body of the latent heat recovery type heat source machine.
  8. 前記通気用細孔が当該潜熱回収型の熱源機の排気経路に開放されている ことを特徴とする請求項6に記載の潜熱回収型の熱源機。 Latent heat recovery type heat source machine according to claim 6, characterized in that the ventilation pores are open to the exhaust path of the latent heat recovery type heat source machine.
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