JP6830369B2 - 1-can type compound heat source machine - Google Patents
1-can type compound heat source machine Download PDFInfo
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- JP6830369B2 JP6830369B2 JP2017014907A JP2017014907A JP6830369B2 JP 6830369 B2 JP6830369 B2 JP 6830369B2 JP 2017014907 A JP2017014907 A JP 2017014907A JP 2017014907 A JP2017014907 A JP 2017014907A JP 6830369 B2 JP6830369 B2 JP 6830369B2
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- 150000001875 compounds Chemical class 0.000 title claims 3
- 238000005192 partition Methods 0.000 claims description 68
- 239000002131 composite material Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 41
- 239000000463 material Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000001514 detection method Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
本発明は、缶体の内部に２つのバーナを持つ１缶式複合熱源機に関する。 The present invention relates to a one-can type composite heat source machine having two burners inside a can body.
この種の１缶式複合熱源機は、単一の缶体内部に２つのバーナが横並びに収容され、各バーナの上方には、夫々、熱交換器が設けられている。各熱交換器は、夫々のバーナの燃焼排気が通過することによって加熱される。このとき、一方のバーナによって生成された燃焼排気が他方の熱交換器を加熱しないように、缶体内部は、金属板によって形成された仕切部材によって夫々のバーナを収容する２つの燃焼室に区画されている（下記特許文献１参照）。 In this type of one-can type combined heat source machine, two burners are housed side by side inside a single can body, and heat exchangers are provided above each burner. Each heat exchanger is heated by passing the combustion exhaust of each burner. At this time, the inside of the can body is divided into two combustion chambers accommodating each burner by a partition member formed of a metal plate so that the combustion exhaust generated by one burner does not heat the other heat exchanger. (See Patent Document 1 below).
仕切部材は、２つのバーナ間に設けられて上方に延びる形状とされており、バーナの上面の炎口よりも上方となる位置においては、バーナによる通常の加熱だけでなく異常時にも過剰な熱を受け易いため比較的高温となる。 The partition member is provided between the two burners and has a shape that extends upward, and at a position above the flame port on the upper surface of the burner, not only normal heating by the burner but also excessive heat in the event of an abnormality occurs. It becomes relatively hot because it is easily affected.
このため、仕切部材は、その材料として例えば安価な軟鉄等の金属材料を用いた場合には、高い温度の影響により孔が開き易く、仕切部材に孔が開くと２つの燃焼室間で排気が流通してしまうおそれがある。そこで、従来より、この種の仕切部材は、ステンレス等の高い耐熱性を有する金属材料によって形成され、これによって孔開き等の発生が防止されている。 Therefore, when a metal material such as cheap soft iron is used as the material of the partition member, holes are easily opened due to the influence of high temperature, and when the partition member is opened, exhaust gas is discharged between the two combustion chambers. There is a risk of distribution. Therefore, conventionally, this type of partition member is formed of a metal material having high heat resistance such as stainless steel, thereby preventing the occurrence of perforation and the like.
しかし、ステンレス等の高い耐熱性を有する金属材料は高価であるため、コストが高くなる不都合があった。 However, since a metal material having high heat resistance such as stainless steel is expensive, there is a disadvantage that the cost is high.
上記の点に鑑み、本発明は、仕切部材の材料コストを低く抑えつつ仕切部材の孔開きを確実に防止できる１缶式複合熱源機を提供することを目的とする。 In view of the above points, it is an object of the present invention to provide a one-can type composite heat source machine capable of reliably preventing perforation of a partition member while keeping the material cost of the partition member low.
かかる目的を達成するために、本発明は、缶体と、該缶体内部に互いに隣接して収容された一対のバーナと、両バーナ間を仕切る仕切部材と、を備える１缶式複合熱源機において、前記仕切部材は、金属製の一対の外層板と、両外層板の間に設けられた金属製の内層板とを備え、前記内層板は、前記外層板よりも耐熱性の高い金属材料により形成されていて、前記バーナの上面に形成された炎口より上方となる位置にのみ配設されていることを特徴とする。 In order to achieve such an object, the present invention is a one-can type composite heat source machine including a can body, a pair of burners housed adjacent to each other inside the can body, and a partition member for partitioning between the two burners. In, the partition member includes a pair of metal outer layer plates and a metal inner layer plate provided between the two outer layer plates, and the inner layer plate is formed of a metal material having higher heat resistance than the outer layer plate. It is characterized in that it is arranged only at a position above the flame port formed on the upper surface of the burner.
本発明によれば、仕切部材を構成する一対の外層板を例えば軟鉄等の耐熱性の比較的低い安価な金属材料を用いて形成することにより、その材料コストを低く抑えることができる。 According to the present invention, by forming a pair of outer layer plates constituting a partition member using an inexpensive metal material having relatively low heat resistance such as soft iron, the material cost can be kept low.
そして、外層板は、バーナの炎口より上方に位置する部分で高温となるが、この部分の一対の外層板の間には、外層板よりも耐熱性の高い金属材料による内層板が設けられている。よって、内層板が有する高い耐熱性により、仕切部材の孔開きを防止することができる。 The outer layer plate becomes hot at a portion located above the flame port of the burner, and an inner layer plate made of a metal material having higher heat resistance than the outer layer plate is provided between the pair of outer layer plates in this portion. .. Therefore, due to the high heat resistance of the inner layer plate, it is possible to prevent the partition member from opening holes.
しかも、ステンレス等の耐熱性の高い金属材料で形成した内層板は、その材料が高価であってもバーナの炎口より上方に位置する位置に設けられるので、材料コストの増加が抑えられる。 Moreover, since the inner layer plate made of a metal material having high heat resistance such as stainless steel is provided at a position above the flame port of the burner even if the material is expensive, an increase in material cost can be suppressed.
このように、本発明によれば、仕切部材の材料コストを低く抑えつつ仕切部材の孔開きを確実に防止できる１缶式複合熱源機を提供することができる。 As described above, according to the present invention, it is possible to provide a one-can type composite heat source machine that can surely prevent the partition member from being perforated while keeping the material cost of the partition member low.
また、本発明において、前記内層板は、前記バーナに加熱された前記仕切部材における最も高温となる部分にのみ設けられていることを特徴とする。 Further, in the present invention, the inner layer plate is provided only at the hottest portion of the partition member heated by the burner.
本発明によれば、仕切部材で最も高温となる部分にのみ内層板を設けることにより、仕切部材全体に内層板を設けた場合に比べて、内層板を設ける領域を小さくすることができ、材料コストを一層低減させることができる。 According to the present invention, by providing the inner layer plate only in the portion of the partition member having the highest temperature, it is possible to reduce the area in which the inner layer plate is provided as compared with the case where the inner layer plate is provided in the entire partition member. The cost can be further reduced.
また、本発明において、前記一対の外層板間の一部に温度センサが設けられている場合、前記内層板は、前記温度センサから離間した位置にのみ設けられていることを特徴とする。 Further, in the present invention, when the temperature sensor is provided in a part between the pair of outer layer plates, the inner layer plate is provided only at a position separated from the temperature sensor.
一対の外層板間の一部に温度センサを設けることにより、温度センサの検出温度から、過剰な加熱を検出して燃焼を止める等の対策が可能となる。しかし、温度センサが温度を検出可能な領域は仕切部材の一部であり、温度センサから比較的離れた位置で過剰な温度上昇が生じても、それを温度センサで検出することは困難である。そこで、本発明は、温度センサから離間した位置にのみ内層板を設け、温度センサによる高温検出が行えなかった場合に備えて内層板による仕切部材の孔開きを防止する。しかも、温度センサが設けられていることにより、内層板を設ける領域を比較的小さくすることができ、仕切部材の材料コストを低減させることができる。 By providing a temperature sensor in a part between the pair of outer layer plates, it is possible to take measures such as detecting excessive heating from the temperature detected by the temperature sensor and stopping combustion. However, the region where the temperature sensor can detect the temperature is a part of the partition member, and even if an excessive temperature rise occurs at a position relatively distant from the temperature sensor, it is difficult for the temperature sensor to detect it. .. Therefore, in the present invention, the inner layer plate is provided only at a position separated from the temperature sensor to prevent the partition member from being perforated by the inner layer plate in case the high temperature cannot be detected by the temperature sensor. Moreover, since the temperature sensor is provided, the area where the inner layer plate is provided can be made relatively small, and the material cost of the partition member can be reduced.
また、本発明において、前記内層板は、少なくとも一方の前記外層板の一部を外方に膨出させることにより両外層板の間に形成した収容部に収容され、該収容部は、前記両外層板を互いに密着させた密着部により包囲されていることを特徴とする。 Further, in the present invention, the inner layer plate is housed in an accommodating portion formed between the two outer layer plates by inflating at least a part of the outer layer plate outward, and the accommodating portion is housed in the accommodating portion formed between the two outer layer plates. It is characterized in that it is surrounded by a close contact portion in which the two are in close contact with each other.
本発明よれば、両外層板の間に形成した収容部に内層板を収容する。この収容部は、その周囲の両外層板が密着部により密着して閉塞されている。これにより、外層板への内層板のネジ止めや溶接等による連結が不要となり、構造簡単として内層板を外層板間に確実に保持することができる。更に、両外層板間の内層板と異なる位置に温度センサが設けられている場合には、密着部によって温度センサの周囲の両外層板間も通気不能とすることができ、両外層板間に侵入した空気との接触の影響により温度センサの検出精度が低下することを防止することができる。 According to the present invention, the inner layer plate is accommodated in the accommodating portion formed between the two outer layer plates. In this accommodating portion, both outer layer plates around the accommodating portion are closed by the close contact portion. As a result, it is not necessary to screw or weld the inner layer plate to the outer layer plate, and the inner layer plate can be reliably held between the outer layer plates as the structure is simple. Further, when the temperature sensor is provided at a position different from the inner layer plate between the two outer layer plates, it is possible to prevent ventilation between the two outer layer plates around the temperature sensor by the close contact portion, and between the two outer layer plates. It is possible to prevent the detection accuracy of the temperature sensor from being lowered due to the influence of contact with the invading air.
また、本発明において、前記外層板は、熱伝導性の比較的高い金属材料である鉄製薄板の表面にアルミメッキを施した板金により形成されていることを特徴とする。 Further, in the present invention, the outer layer plate is characterized in that it is formed of a sheet metal in which the surface of an iron thin plate, which is a metal material having a relatively high thermal conductivity , is plated with aluminum .
本発明によれば、バーナから受ける熱が仕切部材全体に分散して一部のみへの熱の集中を防止することができる。これにより、内層板の厚みを小とすることが可能となるので材料コストを一層低減させることができる。更に、両外層板間の内層板と異なる位置に温度センサが設けられている場合には、温度センサへの熱伝導が円滑に行われ、温度センサの検出範囲が広くなる。よって、内層板を設ける領域を一層縮小することができ、材料コストを一層低減できる。 According to the present invention, the heat received from the burner can be dispersed over the entire partition member to prevent the heat from being concentrated on only a part of the partition member. As a result, the thickness of the inner layer plate can be reduced, so that the material cost can be further reduced. Further, when the temperature sensor is provided at a position different from the inner layer plate between the two outer layer plates, heat conduction to the temperature sensor is smoothly performed, and the detection range of the temperature sensor is widened. Therefore, the area where the inner layer plate is provided can be further reduced, and the material cost can be further reduced.
本発明の一実施形態を図面に基づいて説明する。図１は、２つの水回路（例えば、給湯回路と風呂回路）を有する１缶式複合熱源機１を示している。１缶式複合熱源機１は、単一の缶体２の内部に横方向に並ぶ第１熱交換器３１と第２熱交換器３２とを備えている。 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a one-can type composite heat source machine 1 having two water circuits (for example, a hot water supply circuit and a bath circuit). The one-can type composite heat source machine 1 includes a first heat exchanger 31 and a second heat exchanger 32 arranged in the horizontal direction inside a single can body 2.
缶体２の内部における第１熱交換器３１の下方には第１燃焼室４１が形成されており、第１燃焼室４１内には、第１熱交換器３１を加熱するための燃焼排気を生成する第１バーナ５１が設けられている。 A first combustion chamber 41 is formed below the first heat exchanger 31 inside the can body 2, and combustion exhaust for heating the first heat exchanger 31 is provided in the first combustion chamber 41. A first burner 51 to be generated is provided.
同じように、缶体２の内部における第２熱交換器３２の下方には第２燃焼室４２が形成されており、第２燃焼室４２内には、第２熱交換器３２を加熱するための燃焼排気を生成する第２バーナ５２が設けられている。 Similarly, a second combustion chamber 42 is formed below the second heat exchanger 32 inside the can body 2, and the second heat exchanger 32 is heated in the second combustion chamber 42. A second burner 52 is provided to generate the combustion exhaust of the above.
第１バーナ５１と第２バーナ５２との間には、第１燃焼室４１と第２燃焼室４２とを仕切る仕切部材６が設けられている。 A partition member 6 for partitioning the first combustion chamber 41 and the second combustion chamber 42 is provided between the first burner 51 and the second burner 52.
缶体２の内部における第１バーナ５１及び第２バーナ５２の下部には、上下に通気自在の分布板７が設けられており、缶体２の下部には、分布板７によって画成された給気室８が形成されている。 A distribution plate 7 that allows vertical ventilation is provided below the first burner 51 and the second burner 52 inside the can body 2, and is defined by the distribution plate 7 at the lower portion of the can body 2. The air supply chamber 8 is formed.
給気室８には、燃焼ファン９が接続されている。燃焼ファン９は、給気室８から分布板７を介して第１バーナ５１と第２バーナ５２とに燃焼用二次空気を供給する。 A combustion fan 9 is connected to the air supply chamber 8. The combustion fan 9 supplies secondary combustion air from the air supply chamber 8 to the first burner 51 and the second burner 52 via the distribution plate 7.
缶体２の上部には排気フード１０が連結されている。排気フード１０には、第１燃焼室４１と第２燃焼室４２との両方に連通する排気口１０ａが形成されている。 An exhaust hood 10 is connected to the upper part of the can body 2. The exhaust hood 10 is formed with an exhaust port 10a that communicates with both the first combustion chamber 41 and the second combustion chamber 42.
第１バーナ５１によって第１燃焼室４１で生成された燃焼排気は、第１燃焼室４１を上昇して第１熱交換器３１を通過し、排気フード１０の排気口１０ａに向かう。このとき、第１熱交換器３１の吸熱管３１ｂ内を流れる水が加熱される。 The combustion exhaust generated in the first combustion chamber 41 by the first burner 51 rises in the first combustion chamber 41, passes through the first heat exchanger 31, and heads for the exhaust port 10a of the exhaust hood 10. At this time, the water flowing in the endothermic pipe 31b of the first heat exchanger 31 is heated.
第２バーナ５２によって第２燃焼室４２で生成された燃焼排気は、第２燃焼室４２を上昇して第２熱交換器３２を通過し、排気フード１０の排気口１０ａに向かう。このとき、第２熱交換器３２の吸熱管３２ｂ内を流れる水が加熱される。 The combustion exhaust generated in the second combustion chamber 42 by the second burner 52 rises in the second combustion chamber 42, passes through the second heat exchanger 32, and heads for the exhaust port 10a of the exhaust hood 10. At this time, the water flowing in the endothermic tube 32b of the second heat exchanger 32 is heated.
第１バーナ５１と第２バーナ５２とは、何れも複数の単位バーナ５により構成される。単位バーナ５は、図２に示すように、上面に上向きに開口する炎口５ｉが形成されており、混合管部５ａで生成された混合ガスを炎口５ｉから噴出して火炎を形成する。混合管部５ａは、マニホールド５ｂに設けられたガスノズル５ｃから供給される燃料ガスと燃焼用一次空気とを取り込み混合することにより混合ガスを生成する。 Both the first burner 51 and the second burner 52 are composed of a plurality of unit burners 5. As shown in FIG. 2, the unit burner 5 has a flame port 5i that opens upward on the upper surface thereof, and ejects the mixed gas generated by the mixing tube portion 5a from the flame port 5i to form a flame. The mixing pipe portion 5a generates a mixed gas by taking in and mixing the fuel gas supplied from the gas nozzle 5c provided on the manifold 5b and the primary air for combustion.
第１熱交換器３１と第２熱交換器３２とは、夫々、吸熱フィン３１ａ，３２ａと、吸熱フィン３１ａ，３２ａを貫通する蛇行形状の吸熱管３１ｂ，３２ｂとを備えている。第１熱交換器３１の吸熱管３１ｂには、図示しないが、例えば、上流側の給水管と下流側の出湯管とが接続され、出湯管の下流端の出湯栓を開いて第１熱交換器３１の吸熱管３１ｂに通水したとき、第１バーナ５１に点火されて、出湯栓から設定温度の湯が出湯される。また、第２熱交換器３２の吸熱管３２ｂには、図示しないが、例えば、往き管と戻り管とを介して浴槽が接続されており、浴槽内の水を第２熱交換器３２の吸熱管３２ｂを介して循環させるとき、第２バーナ５２に点火されて、風呂の追い焚きが行われる。 The first heat exchanger 31 and the second heat exchanger 32 each include heat absorbing fins 31a and 32a and serpentine heat absorbing tubes 31b and 32b penetrating the heat absorbing fins 31a and 32a, respectively. Although not shown, the heat absorption pipe 31b of the first heat exchanger 31 is connected to, for example, an upstream water supply pipe and a downstream hot water outlet pipe, and the hot water tap at the downstream end of the hot water outlet pipe is opened to exchange the first heat. When water is passed through the heat absorbing pipe 31b of the vessel 31, the first burner 51 is ignited, and hot water having a set temperature is discharged from the hot water tap. Further, although not shown, a bathtub is connected to the heat absorbing pipe 32b of the second heat exchanger 32 via, for example, an outgoing pipe and a returning pipe, and water in the bathtub is absorbed by the second heat exchanger 32. When circulating through the pipe 32b, the second burner 52 is ignited to reheat the bath.
本実施形態の１缶式複合熱源機１は、第１バーナ５１の定格燃焼量（最大燃焼量）の方が第２バーナ５２の定格燃焼量よりも大きいことにより、第１熱交換器３１の方が第２熱交換器３２よりも大型となっている。要求加熱能力が大きい場合には、比較的大きな熱交換器が必要となるため、本実施形態のような１缶式複合熱源機１では、第２熱交換器３２よりも大型の第１熱交換器３１が給湯回路に接続され、小型の第２熱交換器３２は風呂回路に接続される。 In the one-can type combined heat source machine 1 of the present embodiment, the rated combustion amount (maximum combustion amount) of the first burner 51 is larger than the rated combustion amount of the second burner 52, so that the first heat exchanger 31 The size is larger than that of the second heat exchanger 32. When the required heating capacity is large, a relatively large heat exchanger is required. Therefore, in the one-can type combined heat source machine 1 as in this embodiment, the first heat exchange is larger than the second heat exchanger 32. The vessel 31 is connected to the hot water supply circuit, and the small second heat exchanger 32 is connected to the bath circuit.
仕切部材６は、図１に示すように、第１バーナ５１及び第２バーナ５２の炎口５ｉよりも上方に位置して第１燃焼室４１と第２燃焼室４２とを仕切る上側仕切部６ａと、第１バーナ５１と第２バーナ５２との間に位置する下側仕切部６ｂとを備えている。 As shown in FIG. 1, the partition member 6 is located above the flame port 5i of the first burner 51 and the second burner 52, and is an upper partition portion 6a that separates the first combustion chamber 41 and the second combustion chamber 42. And a lower partition portion 6b located between the first burner 51 and the second burner 52.
図３に示すように、上側仕切部６ａと下側仕切部６ｂとは、一対の外層板（第１外層板６１、第２外層板６２）により形成されている。即ち、図１及び図３に示すように、第１外層板６１は、第１燃焼室４１に面する側の上側仕切部６ａから下側仕切部６ｂまでを１枚で形成しており、第２外層板６２は、第２燃焼室４２に面する側の上側仕切部６ａから下側仕切部６ｂまでを１枚で形成している。そして、第１外層板６１と第２外層板６２とは、鉄製薄板の表面にアルミメッキを施した板金を材料として採用したことにより、材料コストを低く抑えることができる。 As shown in FIG. 3, the upper partition portion 6a and the lower partition portion 6b are formed by a pair of outer layer plates (first outer layer plate 61, second outer layer plate 62). That is, as shown in FIGS. 1 and 3, the first outer layer plate 61 is formed by one sheet from the upper partition portion 6a to the lower partition portion 6b on the side facing the first combustion chamber 41. The two outer layer plates 62 form one sheet from the upper partition portion 6a on the side facing the second combustion chamber 42 to the lower partition portion 6b. The material cost of the first outer layer plate 61 and the second outer layer plate 62 can be kept low by adopting a sheet metal having an aluminum-plated surface of an iron thin plate as a material.
上側仕切部６ａには、温度センサ１１を収容するセンサ収容部６ｃと、内層板６３を収容する内層板収容部６ｄ（本発明における収容部に相当する）とが形成されている。下側仕切部６ｂには、給気室８からの空気が供給される内部空隙６ｅと、内部空隙６ｅの空気を上方に流出させる通気孔６ｆとが形成されている。 The upper partition portion 6a is formed with a sensor accommodating portion 6c accommodating the temperature sensor 11 and an inner layer plate accommodating portion 6d (corresponding to the accommodating portion in the present invention) accommodating the inner layer plate 63. The lower partition portion 6b is formed with an internal gap 6e to which air from the air supply chamber 8 is supplied and a ventilation hole 6f for allowing the air in the internal gap 6e to flow upward.
センサ収容部６ｃは、棒状の温度センサ１１を収容する筒状空間であり、第１外層板６１と第２外層板６２とに絞り加工を施すことにより形成されている。内層板収容部６ｄは、平坦な薄板である内層板６３を収容する空間で、第１外層板６１に絞り加工を施すことにより形成されている。 The sensor accommodating portion 6c is a tubular space accommodating the rod-shaped temperature sensor 11, and is formed by drawing the first outer layer plate 61 and the second outer layer plate 62. The inner layer plate accommodating portion 6d is a space for accommodating the inner layer plate 63 which is a flat thin plate, and is formed by drawing the first outer layer plate 61.
上側仕切部６ａにおけるセンサ収容部６ｃと内層板収容部６ｄとを除く部分は、第１外層板６１と第２外層板６２とを密着させて形成した密着部６ｈとなっている。これにより、密着部６ｈに対して、センサ収容部６ｃは、上側仕切部６ａの第１燃焼室４１側と第２燃焼室４２側との両方に膨出するように形成され、内層板収容部６ｄは、上側仕切部６ａの第１燃焼室４１側にのみ膨出するように形成される。 The portion of the upper partition portion 6a excluding the sensor accommodating portion 6c and the inner layer plate accommodating portion 6d is a close contact portion 6h formed by bringing the first outer layer plate 61 and the second outer layer plate 62 into close contact with each other. As a result, the sensor accommodating portion 6c is formed so as to bulge into both the first combustion chamber 41 side and the second combustion chamber 42 side of the upper partition portion 6a with respect to the close contact portion 6h, and the inner layer plate accommodating portion. 6d is formed so as to bulge only on the first combustion chamber 41 side of the upper partition portion 6a.
センサ収容部６ｃの周囲が密着部６ｈとなっているので、外層板６１，６２間を上昇する空気が温度センサ１１に接触して外層板６１，６２から伝達される温度を正確に検出できなくなるといった事態が防止され、安定した温度検出が行える。 Since the periphery of the sensor accommodating portion 6c is the close contact portion 6h, the air rising between the outer layer plates 61 and 62 comes into contact with the temperature sensor 11 and the temperature transmitted from the outer layer plates 61 and 62 cannot be accurately detected. Such a situation is prevented, and stable temperature detection can be performed.
内層板６３は、矩形状のステンレス製薄板であり、図４に示すように、内層板収容部６ｄに収容されて第１外層板６１と第２外層板６２との間に挟み込まれた状態で保持されている。また、内層板６３は、内層板収容部６ｄに収容されてその周囲が密着部６ｈとなっていることにより、例えば、ネジ止めや溶接等によって連結することなく、確実に内層板６３を定位置に保持しておくことができる。 The inner layer plate 63 is a rectangular stainless steel thin plate, and as shown in FIG. 4, is accommodated in the inner layer plate accommodating portion 6d and sandwiched between the first outer layer plate 61 and the second outer layer plate 62. It is held. Further, since the inner layer plate 63 is accommodated in the inner layer plate accommodating portion 6d and the periphery thereof is the close contact portion 6h, the inner layer plate 63 can be reliably positioned at a fixed position without being connected by screwing or welding, for example. Can be held in.
温度センサ１１は、コントローラ１２に接続されている。コントローラ１２は、温度センサ１１から得られる温度検出信号に基づいて各種の異常を監視する。温度センサ１１を備えることにより、例えば、第１バーナ５１と第２バーナ５２との何れか一方のバーナのみの単独燃焼時に、温度センサ１１の検出温度が所定の閾値以上になったとき（上側仕切部６ａが過剰に高温となったとき）、燃焼中の一方のバーナに対応する一方の熱交換器のフィン詰りが発生したと判断して、一方のバーナの燃焼を禁止する。 The temperature sensor 11 is connected to the controller 12. The controller 12 monitors various abnormalities based on the temperature detection signal obtained from the temperature sensor 11. By providing the temperature sensor 11, for example, when the detection temperature of the temperature sensor 11 becomes equal to or higher than a predetermined threshold value when only one of the burners 51 and the second burner 52 is burned independently (upper partition). (When the temperature of the part 6a becomes excessively high), it is determined that the fin clogging of one heat exchanger corresponding to one burner during combustion has occurred, and the combustion of one burner is prohibited.
上側仕切部６ａが過剰に高温となると、上側仕切部６ａを形成している外層板６１，６２が鉄製であるため、孔開きが生じるおそれがあるが、内層板６３が耐熱性の高い金属材料であるステンレス製であることにより、内層板６３で孔開きが生じることはなく、上側仕切部６ａを介して第１燃焼室４１と第２燃焼室４２とで燃焼排気が連通するような事態を防止することができる。 When the upper partition portion 6a becomes excessively high in temperature, the outer layer plates 61 and 62 forming the upper partition portion 6a are made of iron, so that holes may occur. However, the inner layer plate 63 is a metal material having high heat resistance. Because it is made of stainless steel, no holes are formed in the inner layer plate 63, and the combustion exhaust is communicated between the first combustion chamber 41 and the second combustion chamber 42 via the upper partition portion 6a. Can be prevented.
更に、本実施形態においては、温度センサ１１が設けられていることにより、温度センサ１１から離間した位置にのみ内層板６３を設けている。温度センサ１１は上述のように上側仕切部６ａの異常な高温を検出してバーナ５１，５２の燃焼を停止させるので、少なくとも温度センサ１１による高温検出が可能となる位置においては上側仕切部６ａの外層板６１，６２に孔開きは生じない。そして、温度センサ１１から離間した位置は正確な温度検出が困難となるおそれがあるため、ここに内層板６３を設けて孔開きを防止している。そして、このように、内層板６３を設ける領域が小さくてよいので、内層板６３を設けることによる材料コストの増加を抑えることができる。 Further, in the present embodiment, since the temperature sensor 11 is provided, the inner layer plate 63 is provided only at a position away from the temperature sensor 11. As described above, the temperature sensor 11 detects the abnormally high temperature of the upper partition 6a and stops the combustion of the burners 51 and 52. Therefore, at least at a position where the temperature sensor 11 can detect the high temperature, the temperature sensor 11 of the upper partition 6a No holes are formed in the outer layer plates 61 and 62. Since it may be difficult to accurately detect the temperature at a position separated from the temperature sensor 11, an inner layer plate 63 is provided here to prevent hole opening. Since the area where the inner layer plate 63 is provided may be small in this way, it is possible to suppress an increase in material cost due to the provision of the inner layer plate 63.
なお、第１外層板６１と第２外層板６２とは、鉄製薄板の表面にアルミメッキを施した板金により形成されていることにより、熱伝導性が比較的高い。従って、仕切部材６全体で熱を効率よく分散させることができて、最も高温となる上側仕切部６ａの温度上昇を抑えることができる。しかも、温度センサ１１への熱伝導も向上するので温度センサ１１による温度検出可能な領域も広がり、内層板６３を設ける領域を一層小さくすることができる。 Since the first outer layer plate 61 and the second outer layer plate 62 are formed of a sheet metal having an aluminum plating on the surface of an iron thin plate, the thermal conductivity is relatively high. Therefore, the heat can be efficiently dispersed in the entire partition member 6, and the temperature rise of the upper partition portion 6a, which becomes the highest temperature, can be suppressed. Moreover, since the heat conduction to the temperature sensor 11 is also improved, the area where the temperature can be detected by the temperature sensor 11 is expanded, and the area where the inner layer plate 63 is provided can be further reduced.
以上のように、本実施形態の１缶式複合熱源機１によれば、仕切部材６の最も高温となる部分であって温度センサ１１から離間した位置の両外層板６１，６２間に内層板６３を設けることにより、仕切部材６の孔開きの防止と材料コストの低減とを両立させることができる。 As described above, according to the one-can type composite heat source machine 1 of the present embodiment, the inner layer plate is located between the outer layer plates 61 and 62 at the position where the partition member 6 has the highest temperature and is separated from the temperature sensor 11. By providing 63, it is possible to both prevent the partition member 6 from being perforated and reduce the material cost.
また、例えば、内層板６３を設けずに、仕切部材６の下側仕切部６ｂを軟鉄製とし上側仕切部６ａをステンレス製として互いにカシメ等により連結することも考えられるが、連結部分には製造ばらつきによる歪みや隙間が生じやすく、下側仕切部６ｂの内部空隙６ｅの空気が通気孔６ｆから上方に流出するときに、上記連結部分の歪みや隙間によって空気流が乱され、十分な冷却効果が得られなくなるおそれがある。 Further, for example, it is conceivable that the lower partition portion 6b of the partition member 6 is made of soft iron and the upper partition portion 6a is made of stainless steel and connected to each other by caulking or the like without providing the inner layer plate 63. Distortion and gaps are likely to occur due to variation, and when the air in the internal void 6e of the lower partition 6b flows upward from the ventilation hole 6f, the air flow is disturbed by the distortion and gap of the connecting portion, and a sufficient cooling effect is obtained. May not be obtained.
それに対して本実施形態の１缶式複合熱源機１によれば、第１外層板６１及び第２外層板６２が上側仕切部６ａから下側仕切部６ｂまで１枚で形成されているので、上記のような通気孔６ｆから上方に流出する空気の乱れが生じることがなく、上側仕切部６ａの外面に沿って円滑に冷却空気を流すことができる。 On the other hand, according to the one-can type composite heat source machine 1 of the present embodiment, the first outer layer plate 61 and the second outer layer plate 62 are formed by one from the upper partition portion 6a to the lower partition portion 6b. The cooling air can be smoothly flowed along the outer surface of the upper partition portion 6a without causing the turbulence of the air flowing upward from the ventilation hole 6f as described above.
なお、内層板６３は、仕切部材６がバーナ５１，５２によって加熱されたとき、バーナ５１，５２の炎口５ｉよりも上方位置であって、仕切部材６における最も高温となる部分にのみ設けることが好ましい。本実施形態の１缶式複合熱源機１の場合、温度センサ１１が設けられていることにより、温度センサ１１による温度検出可能な範囲が存在する。よって、内層板６３は、温度センサ１１の温度検出範囲を除く部分に設けられている。一方、温度センサ１１が設けられていない場合には、図５に示すように、上側仕切部６ａの上下左右の端部の数mm〜数cmを除いた位置（この範囲で最も高温となる可能性が高い）に設ける。この場合、高価な内層板６３の使用量が増加するが、仕切部材６の上半部である上側仕切部６ａのみであるため全部に設ける場合に比べてコストは低く抑えることができる。 The inner layer plate 63 is provided only at a portion of the partition member 6 that is above the flame port 5i of the burners 51 and 52 and has the highest temperature when the partition member 6 is heated by the burners 51 and 52. Is preferable. In the case of the one-can type composite heat source machine 1 of the present embodiment, since the temperature sensor 11 is provided, there is a range in which the temperature can be detected by the temperature sensor 11. Therefore, the inner layer plate 63 is provided in a portion excluding the temperature detection range of the temperature sensor 11. On the other hand, when the temperature sensor 11 is not provided, as shown in FIG. 5, the position excluding the upper, lower, left and right ends of the upper partition 6a from several mm to several cm (the highest temperature is possible in this range). (Highly likely). In this case, the amount of the expensive inner layer plate 63 used increases, but since it is only the upper partition portion 6a which is the upper half portion of the partition member 6, the cost can be suppressed as compared with the case where it is provided in all.
また、図示しないが、上側仕切部６ａにおける両外層板６１，６２には、内層板収容部６ｄに絞り加工を施すことなく、平坦な両外層板６１，６２間に内層板６３を挟み込むように構成してもよい。これによっても、仕切部材６の高温となる位置にのみ内層板６３を設けることができる。このとき、上側仕切部６ａに温度センサ１１が設けられている場合には、内層板６３を挟み込んだことによって形成された両外層板６１，６２間の隙間に流れる空気の冷却を温度センサ１１が受けないように、温度センサ１１の周囲の隙間を閉塞する部材（例えば耐熱性のシール部材）等を設けることが好ましい。 Further, although not shown, the inner layer plates 63 are sandwiched between the flat outer layer plates 61 and 62 in the upper partition portions 6a so that the inner layer plate accommodating portions 6d are not drawn. It may be configured. Also with this, the inner layer plate 63 can be provided only at the position where the temperature of the partition member 6 becomes high. At this time, when the temperature sensor 11 is provided in the upper partition portion 6a, the temperature sensor 11 cools the air flowing in the gap between the two outer layer plates 61 and 62 formed by sandwiching the inner layer plate 63. It is preferable to provide a member (for example, a heat-resistant seal member) that closes the gap around the temperature sensor 11 so as not to receive the temperature sensor 11.
１…１缶式複合熱源機、２…缶体、５１…第１バーナ（バーナ）、５２…第２バーナ（バーナ）、５ｉ…炎口、６…仕切部材、６１…第１外層板（外層板）、６２…第２外層板（外層板）、６３…内層板、６ｄ…内層板収容部（収容部）、６ｈ…密着部、１１…温度センサ。 1 ... 1 can type composite heat source machine, 2 ... can body, 51 ... first burner (burner), 52 ... second burner (burner), 5i ... flame port, 6 ... partition member, 61 ... first outer layer plate (outer layer) Plate), 62 ... Second outer layer plate (outer layer plate), 63 ... Inner layer plate, 6d ... Inner layer plate accommodating portion (accommodating portion), 6h ... Adhesion portion, 11 ... Temperature sensor.
Claims (5)
前記仕切部材は、金属製の一対の外層板と、両外層板の間に設けられた金属製の内層板とを備え、
前記内層板は、前記外層板よりも耐熱性の高い金属材料により形成されていて、前記バーナの上面に形成された炎口より上方となる位置にのみ配設されていることを特徴とする１缶式複合熱源機。 In a one-can type composite heat source machine including a can body, a pair of burners housed adjacent to each other inside the can body, and a partition member for partitioning between the two burners.
The partition member includes a pair of metal outer layer plates and a metal inner layer plate provided between the two outer layer plates.
The inner layer plate is formed of a metal material having higher heat resistance than the outer layer plate, and is provided only at a position above the flame port formed on the upper surface of the burner. Can type compound heat source machine.
前記内層板は、前記バーナに加熱された前記仕切部材における最も高温となる部分にのみ設けられていることを特徴とする１缶式複合熱源機。 In the one-can type combined heat source machine according to claim 1.
A one-can type composite heat source machine characterized in that the inner layer plate is provided only in a portion of the partition member heated by the burner that has the highest temperature.
前記内層板は、前記温度センサから離間した位置にのみ設けられていることを特徴とする１缶式複合熱源機。 The one-can type composite heat source machine according to claim 1 or 2, wherein a temperature sensor is provided in a part between the pair of outer layer plates.
A one-can type composite heat source machine characterized in that the inner layer plate is provided only at a position separated from the temperature sensor.
前記内層板は、少なくとも一方の前記外層板の一部を外方に膨出させることにより両外層板の間に形成した収容部に収容され、該収容部は、前記両外層板を互いに密着させた密着部により包囲されていることを特徴とする１缶式複合熱源機。 In the one-can type combined heat source machine according to any one of claims 1 to 3.
The inner layer plate is housed in an accommodating portion formed between the two outer layer plates by bulging at least a part of the outer layer plate outward, and the accommodating portion is in close contact with the two outer layer plates in close contact with each other. A one-can type compound heat source machine characterized by being surrounded by a part.
前記外層板は、鉄製薄板の表面にアルミメッキを施した板金により形成されていることを特徴とする１缶式複合熱源機。 In the one-can type combined heat source machine according to any one of claims 1 to 4.
The outer layer plate is a one-can type composite heat source machine characterized in that the outer layer plate is formed of a sheet metal having an aluminum plating on the surface of a thin iron plate .
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