JP3682340B2 - Heat shield plate - Google Patents
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- JP3682340B2 JP3682340B2 JP17036296A JP17036296A JP3682340B2 JP 3682340 B2 JP3682340 B2 JP 3682340B2 JP 17036296 A JP17036296 A JP 17036296A JP 17036296 A JP17036296 A JP 17036296A JP 3682340 B2 JP3682340 B2 JP 3682340B2
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- heat shield
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Details Of Fluid Heaters (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、遮熱板に関するもので、例えば、給湯機内の熱交換器とケーシングとの間に介在させて該ケーシングの温度上昇を緩和させる場合等に使用できる。
【0002】
【従来の技術】
図9は給湯機の一部切欠の側面図である。
ケーシング(11)内にはガスバーナ等を具備する燃焼器(12)とその上方に連設された熱交換器(13)が収容されていると共に、ケーシング(11)の背面板(110) と前記熱交換器(13)の間には遮熱板(2) が設けられており、該遮熱板(2) によって、熱交換器(13)からの輻射熱や、該熱交換器(13)に不測の穴空きが生じた場合に於ける当該穴から洩れた排気熱が、背面板(110) に伝わるのを遮断している。
【0003】
そして、従来の遮熱板(2) は、図10に示すように、一枚の金属板の中央部をプレスで若干窪ませたトレー状に形成されており、外周フランジにはビス孔(28)(28)が穿設されている。そして、該遮熱板(2) の前記ビス孔(28)(28)部分は、背面板(110) を突出させて形成した取付脚(15)(15)に対してビス(16)(16)で固定されている。
【0004】
【発明が解決しようとする課題】
しかしながら、上記従来の遮熱板(2) は一枚の金属板から成形されたものであるから、これが熱交換器(13)からの輻射熱で加熱されて熱膨張すると、前記遮熱板(2) 中の各部分の熱膨張が確実にその外周に伝達され、該遮熱板(2) の変形力がビス(16)(16)の固定部→取付脚(15)(15)→背面板(110) と伝わって該背面板(110) を変形させる原因となる。
【0005】
又、器具のコンパクト化の為、遮熱板(2) と背面板(110) との間隙は小さく(例えば背面板(110) との間隙は現状では約2mmに設定されている)設定されるが、遮熱板(2) の変形が生じると、これと背面板(110) とが接触する。そして、遮熱板(2) が背面板(110) に接触すると前者の熱が後者の背面板(110) に直接に伝達されて遮熱機能を実質的に果たさなくなる。
【0006】
本願の発明は、遮熱板(2) が熱膨張する際に於ける、該遮熱板(2) の変形の緩和を図ると共に、該遮熱板(2) から背面板(110) 等の取付け対象部へ伝わる力を小さくできるようにして該遮熱板(2) からその取付け対象部に与える悪影響を抑え得るようにすることを課題とする。
【0007】
【課題を解決するための手段】
上記課題を解決する為の請求項1の発明の手段は、
『表裏方向から見た場合に全体として間隙が生じないように連結される複数の単位構成板で構成され、
隣接する前記単位構成板相互の連結部は、これら単位構成板相互を部分的に重ね合わせた部位内で局部的に結合されている』ことである。
【0008】
上記手段によれば、遮熱板(2) を構成する各単位構成板は局部的な結合部に於いてのみ連結されており、該局部的な結合部以外の部分は非連結状態となっている。従って、熱膨張する特定の単位構成板に注目した場合、熱膨張に伴う前記単位構成板の変形力が前記局部的な結合部のみを介して隣接する単位構成板に伝達され、前記局部的結合部以外の単位構成板相互が結合されていない非連結領域では、自由に熱膨張できる為、前記変形力が隣接する単位構成板に伝達されないことから、その分、該変形力が遮熱板(2) の外周部に伝わり難くなる。
【0009】
又、各単位構成板は、上記のように局部的な結合部以外の部分が非連結状態となっているから、遮熱板(2) の変形も緩和できる。
請求項2の発明のように、『前記局部的に結合されている部分は、前記互いに重ね合わされる一方の単位構成板に形成されたカシメ孔と、前記一方の単位構成板に重ねられる他方の単位構成板から部分的に***突出させて形成され且つ前記カシメ孔に挿入してカシメられるカシメ突起とから構成されている』場合は、一方の単位構成板に形成されたカシメ孔に対して、前記他方の単位構成板から部分的に***突出させたカシメ突起をカシメるものであるから、該カシメ部に、表裏に貫通する貫通孔、即ち、熱漏れの原因となる貫通孔が形成されない。
【0010】
請求項3の発明のように、『互いに局部的に結合される一対の単位構成板は一箇所で結合されている』場合には、熱膨張する各単位構成板の変形力が単一のカシメ箇所を介して隣接する単位構成板に伝達される。
【0011】
【発明の効果】
以上説明したように、請求項1〜請求項3の発明は、熱膨張する各単位構成板の変形力が遮熱板(2) の外周部に伝わり難いから、例えば、該遮熱板(2) の周縁部を取付け対象部にビス等で固定する場合でも、前記熱膨張に伴う遮熱板(2) の変形力が前記取付け対象部に伝達し難くなって、該取付け対象部に悪影響を与え難くなる。
【0012】
又、遮熱板(2) の変形が緩和できるから、遮熱板(2) と取付け対象部とが接触する心配が少なくなり、該取付け対象部に熱が直接伝達される不具合が生じない。
遮熱板(2) 全体を一枚の金属板で構成するものではなく、複数の単位構成板で構成するものであるから、例えば、金属板をプレス抜きした時に発生する打ち抜きカスとしての円板や矩形板等を連結することによっても製作することができ、スクラップとして廃棄処分の対象となっていた板材の有効利用が図れる。
【0013】
請求項2の発明では、熱の漏れの原因となる貫通孔が各単位構成板のカシメ部に形成されないから、遮熱板(2) の断熱効果が向上する。
請求項3の発明では、各単位構成板の変形力が単一のカシメ箇所を介して隣接する単位構成板に伝達されるから、隣接する単位構成板相互が複数の箇所でカシメられている場合に比べて、前記変形力の伝達経路が少なくなり、該変形力が一層伝わり難くなる。
【0014】
【発明の実施の形態】
次に、上記した発明の実施の形態を説明する。
図1の遮熱板(2) は、図9の如く給湯機の熱交換器(13)とケーシング(11)の間に配設されるものであり、図2の(イ)に示す第1単位構成板(21)を一枚,(ロ)(ハ)に示す第2,第3単位構成板(22)(23)を夫々四枚づつカシメ止めした図5の中間品に曲げ加工等を施したものである。
【0015】
又、各第1〜第3単位構成板(21)(22)(23)は、テーブルコンロの天板にガスバーナ用の開口部を形成するプレス抜き加工を施した際に生じる円板状の抜きカスを利用して製作したものである。
図2の(イ)に示す第1単位構成板(21)は、金属円板の周縁部を円周方向に90°ピッチで直線状に切り落とすことにより、互いに平行な上下辺(211) (212) 及び側辺(213) (214) を形成したものであり、上記上下辺(211) (212) 及び側辺(213) (214) の近傍には、カシメ孔(216) (216) が穿設されている。
【0016】
図2の(ロ)に示す第2単位構成板(22)は、金属円板の上部を水平に切り落とすと共に左右両側部から下部に至る領域を斜めに切り落として形成したもので、上記切り落としによって直線部(221) (222) (223) が形成されている。
尚、第1,第2単位構成板(21)(22)の周縁部を直線状に切り落として上下辺(211) (212) や側辺(213) (214) や直線部(221) (222) (223) を形成するのは、これら第1,第2単位構成板(21)(22)に後述のカシメ加工やプレス加工を施す際に前記直線部等を位置決め用の当たりに当接させる為である。
【0017】
又、第2単位構成板(22)の左右部には、その外周縁近傍にカシメ孔(226) が穿設されている。又、図3に示すように、第2単位構成板(22)の下部には、これから一体的に突出するカシメ用突起(225) が形成されている。
図2の(ハ)に示す第3単位構成板(23)の外周輪郭形状は上記第1単位構成板(21)と同一形状になっており、隣接する一対の側辺(234) と下辺(232) の近傍には、上記カシメ用突起(225) と同様に形成されたカシメ用突起(235) が突設されている。
【0018】
上記各第1〜第3単位構成板(21)(22)(23)を用いて遮熱板(2) を製作する場合には、第1単位構成板(21)に対し、図5に於ける紙面の裏面側となる方向から四枚の第2単位構成板(22)(22)(22)(22)の周縁部を重合させ、後者の各第2単位構成板(22)の外周近傍に突出形成されたカシメ用突起(225) を第1単位構成板(21)のカシメ孔(216) にその裏面側から挿入突出させ、その突出部をカシメることにより、図4に示すように第1単位構成板(21)と第2単位構成板(22)を重合状態に連結固定する。この場合、カシメられた後のカシメ用突起(225) の頂部は閉塞状態となっており、該カシメ用突起(225) 内は一方に閉じた盲孔となっているから、これが貫通孔に成っている場合に比べて、遮熱効果が向上する。又、上記各第2単位構成板(22)(22)(22)(22)の周縁には、直線部(222) (223) を設けることにより、これら第2単位構成板(22)(22)(22)(22)を第1単位構成板(21)に重ね合わせたときに、該第2単位構成板(22)(22)(22)(22)の端部が互いに重なることがない様にした。次に、第2単位構成板(22)の下面に第3単位構成板(23)を重ねると共に、第2単位構成板(22)に対してその裏面方向(図5に於ける紙面の裏側方向)からカシメ孔(226) に第3単位構成板(23)のカシメ用突起(235) を挿入突出させ、該突出部をカシメると、図5に示すように、第1〜第3単位構成板(21)(22)(23)が全体として隙間が無い状態で正方形板状に結合される。第2単位構成板(22)(22)(22)(22)同士は重ならないようになっているが、これらの一方の面には第1単位構成板(21)が当接すると共に他面には第3単位構成板(23)(23)(23)(23)が当接しており、第1,第3単位構成板(21)(23)(23)(23)(23)で第2単位構成板(22)(22)(22)(22)をサンドイッチ状に挟むことによって全体として三層構造に構成しているから、一層構造又は二層構造に比べて頑丈な構造と成る利点がある。更に、この正方形板状の四角部近傍にビス孔(33)(33)を穿設すると、図5に示す中間品ができ上がる。尚、上記のものでは、互いにカシメ結合された隣接する単位構成板は一箇所でカシメ結合された状態となっており、各第1〜第3単位構成板(21)(22)(23)の熱膨張に基づく変形力が前記単一のカシメ箇所を介してしか隣接する単位構成板に伝達されないようになっている。
【0019】
次に、前記図5の状態にある中間品の中央部をプレスで若干窪ませると同時に、外周部を所定形状に打ち抜くと、図1,図6に示す形状の遮熱板(2) が完成する。尚、遮熱板(2) は、その中央部を窪ませることなくフラット状態にし、外周部の打ち抜き加工のみを行っても良い。
次に、図9に示されるケーシング(11)の背面板(110) から突出する4つの取付脚(15)(15)部分に対して遮熱板(2) に形成されたビス孔(33)(33)を対応させて該部分をビス(16)(16)で結合すると、同図の如く、ケーシング(11)の背面板(110) と熱交換器(13)の間に遮熱板(2) が配設固定される。
【0020】
このものでは、遮熱板(2) を構成する第1〜第3単位構成板(21)(22)(23)は、図5に示すように一箇所のカシメ結合部(35)(35)に於いてのみ繋がっており、該カシメ結合部(35)(35)以外の部分は図7のように非連結状態となっている。従って、例えば第1単位構成板(21)と第2単位構成板(22)が熱膨張する場合には、これらがカシメ結合されていない非連結領域に於いては、図7の想像線で示すように第1,第2単位構成板(21)(22)の周縁部(219) (229) は互いに独立して伸縮移動する。従って、この領域では、熱膨張が自由に行われるため第1単位構成板(21)又は第2単位構成板(22)の熱膨張による変形力が他の第2単位構成板(22)又は第1単位構成板(21)に伝達されず、該領域近傍の変形は第1,第2単位構成板(21)(22)自体で吸収されてしまう。よって、遮熱板(2) の熱膨張の悪影響がビス(16)(16)及び取付脚(15)(15)を介して背面板(110) 側に伝わりにくくなって、無理な力の作用による背面板(110) の変形が生じ難くなる。
【0021】
又、上記のように第1単位構成板(21)や第2単位構成板(22)の非連結領域では、その熱膨張による変形が他の第2単位構成板(22)や第1単位構成板(21)に伝達されないから、遮熱板(2) 自体の変形も緩和される。
これにより、コンパクト化のために遮熱板(2) と背面板(110) との間隙を小さくした場合(例えば約2mm)であっても、遮熱板(2) が変形して背面板(110) と接触する不都合が防止でき、遮熱板(2) が背面板(110) に接触してこれに熱伝達されることによる遮熱板(2) の機能喪失の不都合が防止できる。
【0022】
又、複数の第1〜第3単位構成板(21)(22)(23)を連結して形成しているから、上記テーブルコンロの天板に形成するガスバーナ用の透孔をプレス抜きしたときに生じる円板状の抜きカスの如き小さなスクラップ材であっても、これを有効利用して遮熱板(2) を作ることができる。
尚、図9では遮熱板(2) を給湯機の熱交換器とケーシング(11)の間を遮熱する為に使用した例を示しているが、温風暖房器の燃焼部とケーシングの間を熱的に遮断する場合のように、種々の遮熱板として使用することができる。
【0023】
尚、上記実施の形態では、取付脚(15)(15)を介して遮熱板(12)を背面板(110) にビス(16)(16)で固定しているが、取付脚(15)(15)を設けることなく、遮熱板(12)をビス(16)(16)で背面板(110) に直接取付けても良い。
又、上記実施の形態では、第2,第3単位構成板(22)(23)から一体的に突出させたカシメ用突起(225) (235) を利用して、隣接する単位構成板相互をカシメ結合したが、第1〜第3単位構成板(21)(22)(23)の夫々にカシメ孔を形成し、該カシメ孔とこれに挿入するリベットを利用して各単位構成板をカシメ結合しても良い。
【0024】
又、隣接する各単位構成板をスポット溶接で局部的に結合しても良い。
尚、上記実施の形態では、単位構成板から一体的に突出させたカシメ用突起(225) (235) を利用して各単位構成板をカシメるようにしたから、該カシメ作業と遮熱板(2) の周縁の曲げ及び打ち抜き作業がプレス機で同時に行える。従って、単位構成板をスポット溶接によって結合しその後に曲げ加工等をする場合に比べて作業性が向上する。又、上記リベットを用いる場合と相違し、カシメのための特別な部材(リベット)が不要となり、部品数の減少を図ることができる。
【0025】
更に、上記実施の形態では、第1〜第3単位構成板(21)(22)(23)を順次重ね合わせて三層構造の遮熱板(2) を構成したが、図8の(イ)に示すように、周囲にカシメ孔(261) (261) (261) を具備する第1単位構成板(26)と、同様にカシメ孔(271) (271) を具備する第2単位構成板(27)(27)(27)(27)を同図のように同一平面内で集合させ、その裏面に、同図(ロ)に示すように集合させた第3単位構成板(28)(28)(28)(28)を重ね合わせ((イ)の想像線参照)、第3単位構成板(28)(28)(28)(28)に形成されたカシメ用突起(281) (281) を前記第1,第2単位構成板(26)(27)のカシメ孔(261) (271) 挿入してカシメる二層構造の遮熱板(2) にしてもよい。
【図面の簡単な説明】
【図1】本願の発明の実施の形態に係る遮熱板(2) の平面図
【図2】図5に現れる第2単位構成板(22)第3単位構成板(23)(24)の平面図
【図3】図2に於けるIII−IIIラインの要部の拡大断面図
【図4】第1単位構成板(21)と第2単位構成板(22)のカシメ部の詳細図
【図5】遮熱板(2) をプレス加工する前の中間品の平面図
【図6】図1の遮熱板(2) の側面図
【図7】第1単位構成板(21)と第1単位構成板(21)の非結合部の拡大図
【図8】第1〜第3単位構成板(26)(27)(28)の結合態様の変形例の説明図
【図9】遮熱板(2) の適用例を示す断面図
【図10】従来例の説明図
【符号の説明】
(2) ・・・遮熱板
(21)・・・第1単位構成板
(22)・・・第2単位構成板
(23)・・・第3単位構成板
(225) (235) ・・・カシメ用突起
(216) (226) ・・・カシメ孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat shield, and can be used, for example, when the temperature rise of the casing is mitigated by being interposed between a heat exchanger in the water heater and the casing.
[0002]
[Prior art]
FIG. 9 is a side view of a partially cutaway water heater.
The casing (11) accommodates a combustor (12) having a gas burner and the like, and a heat exchanger (13) connected thereabove, and a back plate (110) of the casing (11) and the above-mentioned A heat shield (2) is provided between the heat exchangers (13), and the heat shield (2) is used to radiate heat from the heat exchanger (13) and to the heat exchanger (13). When an unexpected hole is formed, the exhaust heat leaking from the hole is prevented from being transmitted to the back plate (110).
[0003]
As shown in FIG. 10, the conventional heat shield plate (2) is formed in a tray shape in which the central portion of one metal plate is slightly depressed by a press, and a screw hole (28 ) (28) is drilled. The screw holes (28), (28) of the heat shield plate (2) are screwed to the mounting legs (15), (15) formed by projecting the back plate (110). ).
[0004]
[Problems to be solved by the invention]
However, since the conventional heat shield plate (2) is formed from a single metal plate, when this is heated by radiant heat from the heat exchanger (13) and thermally expanded, the heat shield plate (2 ) The thermal expansion of each part is reliably transmitted to the outer periphery, and the deformation force of the heat shield plate (2) is fixed to the fixing part of the screws (16) (16) → mounting legs (15) (15) → back plate This is transmitted to (110) and causes the back plate (110) to be deformed.
[0005]
In order to make the instrument compact, the gap between the heat shield plate (2) and the back plate (110) is set small (for example, the gap between the back plate (110) is currently set to about 2 mm). However, when the heat shield plate (2) is deformed, it comes into contact with the back plate (110). When the heat shield plate (2) comes into contact with the back plate (110), the former heat is directly transferred to the latter back plate (110), so that the heat shield function is not substantially performed.
[0006]
The invention of the present application aims to alleviate deformation of the heat shield plate (2) when the heat shield plate (2) is thermally expanded, and from the heat shield plate (2) to the back plate (110), etc. It is an object of the present invention to reduce the force transmitted to the mounting target part so as to suppress the adverse effect exerted on the mounting target part from the heat shield plate (2).
[0007]
[Means for Solving the Problems]
The means of the invention of claim 1 for solving the above-mentioned problem is as follows:
“It consists of multiple unit components that are connected so that there is no gap as a whole when viewed from the front and back direction.
The connecting portions between the adjacent unit component plates are locally coupled within a portion where these unit component plates are partially overlapped.
[0008]
According to the above means, the unit component plates constituting the heat shield plate (2) are connected only at the local coupling portion, and the portions other than the local coupling portion are in an unconnected state. Yes. Therefore, when attention is paid to a specific unit component plate that thermally expands, the deformation force of the unit component plate accompanying the thermal expansion is transmitted to the adjacent unit component plate only through the local coupling portion, and the local coupling is performed. In the non-connection region where the unit component plates other than the portion are not coupled to each other, since the thermal expansion can be freely performed, the deformation force is not transmitted to the adjacent unit component plates, and accordingly, the deformation force is the heat shield plate ( 2) It is difficult to be transmitted to the outer periphery of
[0009]
In addition, since each unit component plate is in a non-connected state other than the local coupling portion as described above, the deformation of the heat shield plate (2) can be reduced.
As in the second aspect of the invention, “the locally coupled portions are the caulking holes formed in the one unit component plate overlapped with each other, and the other portion overlapped with the one unit component plate. `` It is formed by partially protruding and projecting from the unit component plate and is composed of a caulking projection that is inserted into the caulking hole and caulked '', with respect to the caulking hole formed in one unit component plate, Since the caulking protrusion partially raised and protruded from the other unit component plate is caulked, a through hole penetrating the front and back, that is, a through hole causing heat leakage is not formed in the caulking portion.
[0010]
As in the third aspect of the invention, when “a pair of unit component plates that are locally coupled to each other is coupled at one location”, the deformation force of each unit component plate that thermally expands is a single caulking force. It is transmitted to the adjacent unit component plate via the location.
[0011]
【The invention's effect】
As described above, in the inventions of claims 1 to 3, since the deformation force of each unit component plate that thermally expands is difficult to be transmitted to the outer peripheral portion of the heat shield plate (2), for example, the heat shield plate (2 ), The deformation force of the heat shield plate (2) due to the thermal expansion is difficult to be transmitted to the mounting target part, and the mounting target part is adversely affected. It becomes difficult to give.
[0012]
In addition, since the deformation of the heat shield plate (2) can be alleviated, there is less concern that the heat shield plate (2) will be in contact with the mounting target portion, and there will be no problem that heat is directly transferred to the mounting target portion.
The heat shield plate (2) is not composed of a single metal plate as a whole, but is composed of a plurality of unit component plates. For example, a disc as a punching residue generated when a metal plate is pressed. It can also be manufactured by connecting rectangular plates or the like, and the plate material that has been discarded as scrap can be effectively used.
[0013]
In the invention of
In the invention of
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the above invention will be described.
The heat shield plate (2) in FIG. 1 is disposed between the heat exchanger (13) and the casing (11) of the hot water heater as shown in FIG. 9, and is the first shown in FIG. Bending the intermediate product in Fig. 5 with one unit component plate (21) and four second and third unit component plates (22) and (23) shown in (b) and (c), respectively. It has been applied.
[0015]
Each of the first to third unit constituting plates (21), (22), and (23) is a disc-shaped punch produced when a punching process for forming an opening for a gas burner is performed on the top plate of the table stove. It was produced using waste.
The first unit constituting plate (21) shown in FIG. 2 (a) has upper and lower sides (211) (212) parallel to each other by cutting the peripheral portion of the metal disc linearly at a 90 ° pitch in the circumferential direction. ) And sides (213) and (214), and caulking holes (216) and (216) are formed in the vicinity of the upper and lower sides (211) and (212) and the sides (213) and (214). It is installed.
[0016]
The second unit component plate (22) shown in (b) of FIG. 2 is formed by cutting the upper part of the metal disk horizontally and obliquely cutting the region from the left and right sides to the lower part. Portions (221) (222) (223) are formed.
Note that the peripheral portions of the first and second unit component plates (21) and (22) are cut into a straight line, and the upper and lower sides (211) (212), the side sides (213) (214), and the straight portions (221) (222) ) (223) is formed when the first and second unit constituting plates (21) and (22) are subjected to a caulking process and a pressing process, which will be described later, and the linear portion and the like are brought into contact with each other for positioning. Because of that.
[0017]
Further, crimping holes (226) are formed in the left and right portions of the second unit component plate (22) in the vicinity of the outer peripheral edge thereof. Further, as shown in FIG. 3, a caulking protrusion (225) that integrally projects from the second unit component plate (22) is formed at the lower part of the second unit component plate (22).
The outer peripheral contour shape of the third unit component plate (23) shown in FIG. 2C is the same as that of the first unit component plate (21), and a pair of adjacent side sides (234) and lower sides ( In the vicinity of 232), a caulking projection (235) formed in the same manner as the caulking projection (225) is projected.
[0018]
When the heat shield plate (2) is manufactured using the first to third unit component plates (21), (22), and (23), the first unit component plate (21) is shown in FIG. The periphery of the four second unit component plates (22), (22), (22), and (22) is superposed from the direction of the back side of the paper surface, and the outer periphery of each of the latter second unit component plates (22) As shown in FIG. 4, the caulking protrusion (225) formed to protrude from the back surface is inserted into the caulking hole (216) of the first unit component plate (21) from the back side, and the protruding portion is caulked. The first unit component plate (21) and the second unit component plate (22) are connected and fixed in a polymerized state. In this case, the top of the caulking projection (225) after being crimped is in a closed state, and the inside of the caulking projection (225) is a blind hole closed on one side. Compared to the case, the heat shielding effect is improved. Further, the second unit component plates (22), (22), (22) are provided with straight portions (222), (223) at the periphery of the second unit component plates (22), (22), (22), (22). ) (22) (22) are overlapped with the first unit component plate (21), the ends of the second unit component plates (22) (22) (22) (22) do not overlap each other. I did it. Next, the third unit component plate (23) is overlaid on the lower surface of the second unit component plate (22), and the second unit component plate (22) has its back surface direction (the reverse direction of the paper surface in FIG. 5). ) Through the caulking hole (226), the caulking projection (235) of the third unit component plate (23) is inserted and projected, and the projecting portion is caulked, as shown in FIG. The plates (21), (22), and (23) are combined in a square plate shape with no gap as a whole. The second unit component plates (22), (22), (22) and (22) do not overlap each other, but the first unit component plate (21) abuts on one of these surfaces and the other surface Are in contact with the third unit component plates (23) (23) (23) (23), and the second unit component plates (21) (23) (23) (23) (23) are the second ones. Since the unit component plates (22), (22), (22), and (22) are sandwiched to form a three-layer structure as a whole, there is an advantage that the structure is stronger than a single-layer structure or a two-layer structure. is there. Further, when the screw holes (33) (33) are formed in the vicinity of the square portion of the square plate shape, the intermediate product shown in FIG. 5 is completed. In the above, adjacent unit constituent plates that are caulked and joined together are caulked and joined at one location, and each of the first to third unit constituent plates (21), (22), and (23) The deformation force based on the thermal expansion is transmitted to the adjacent unit component plate only through the single caulking location.
[0019]
Next, when the center part of the intermediate product in the state shown in FIG. 5 is slightly depressed by pressing and the outer peripheral part is punched into a predetermined shape, the heat shield plate (2) having the shape shown in FIGS. 1 and 6 is completed. To do. The heat shield plate (2) may be flattened without being depressed at the center, and only the outer peripheral portion may be punched.
Next, screw holes (33) formed in the heat shield plate (2) with respect to the four mounting legs (15) (15) protruding from the back plate (110) of the casing (11) shown in FIG. When the parts are coupled with screws (16) and (16) in correspondence with (33), as shown in the figure, a heat shield plate (110) is provided between the back plate (110) of the casing (11) and the heat exchanger (13). 2) is fixed.
[0020]
In this structure, the first to third unit constituting plates (21), (22), and (23) constituting the heat shield plate (2) are connected to one caulking coupling portion (35) (35) as shown in FIG. In FIG. 7, the portions other than the caulking coupling portions (35) and (35) are in a non-connected state. Therefore, for example, when the first unit component plate (21) and the second unit component plate (22) are thermally expanded, the unconnected region where they are not crimped is indicated by the imaginary line in FIG. As described above, the peripheral portions (219) and (229) of the first and second unit constituting plates (21) and (22) expand and contract independently. Therefore, in this region, since thermal expansion is performed freely, the deformation force due to the thermal expansion of the first unit component plate (21) or the second unit component plate (22) is affected by the other second unit component plate (22) or the second unit component plate (22). It is not transmitted to the one unit component plate (21), and the deformation in the vicinity of the region is absorbed by the first and second unit component plates (21) and (22) themselves. Therefore, the adverse effect of the thermal expansion of the heat shield plate (2) is not easily transmitted to the back plate (110) side through the screws (16) (16) and the mounting legs (15) (15). The back plate (110) is hardly deformed by the above.
[0021]
Further, as described above, in the unconnected region of the first unit component plate (21) and the second unit component plate (22), the deformation due to thermal expansion is caused by the other second unit component plate (22) and the first unit component plate. Since it is not transmitted to the plate (21), deformation of the heat shield plate (2) itself is also alleviated.
As a result, even if the gap between the heat shield plate (2) and the back plate (110) is reduced (for example, about 2 mm) for compactness, the heat shield plate (2) is deformed and the back plate ( 110), the heat shield plate (2) comes into contact with the back plate (110) and heat is transferred to the heat shield plate (2), and the heat loss of the heat shield plate (2) can be prevented.
[0022]
In addition, since the plurality of first to third unit constituting plates (21), (22), and (23) are connected and formed, when the gas burner through-hole formed in the top plate of the table stove is punched out Even if it is a small scrap material such as a disk-shaped punched residue generated in the above, the heat shield plate (2) can be made by making effective use of this.
FIG. 9 shows an example in which the heat shield plate (2) is used to shield heat between the heat exchanger of the water heater and the casing (11). It can be used as various heat shielding plates as in the case where the gap is thermally blocked.
[0023]
In the above embodiment, the heat shield plate (12) is fixed to the back plate (110) with screws (16) and (16) via the mounting legs (15) and (15). ) (15), the heat shield plate (12) may be directly attached to the back plate (110) with screws (16) (16).
In the above embodiment, the adjacent unit component plates are connected to each other by using the caulking protrusions (225) (235) integrally projected from the second and third unit component plates (22) and (23). The caulking connection is made, but caulking holes are formed in each of the first to third unit constituting plates (21), (22), and (23), and each unit constituting plate is caulked using the caulking holes and rivets inserted into the caulking holes. May be combined.
[0024]
Moreover, you may couple | bond together each adjacent unit component board locally by spot welding.
In the above embodiment, since each unit component plate is crimped using the caulking protrusions (225) (235) integrally projected from the unit component plate, the crimping operation and the heat shield plate are performed. The bending and punching operations of (2) can be performed simultaneously with a press. Accordingly, the workability is improved as compared with the case where the unit constituting plates are joined by spot welding and then bent. Unlike the case of using the rivet, a special member (rivet) for caulking is not required, and the number of parts can be reduced.
[0025]
Furthermore, in the above embodiment, the first to third unit component plates (21), (22), and (23) are sequentially stacked to form the three-layer structure heat shield plate (2). ), The first unit component plate (26) having caulking holes (261) (261) (261) around it and the second unit component plate similarly having caulking holes (271) (271). (27) (27) (27) (27) are assembled in the same plane as shown in the figure, and the third unit component plate (28) (28) ( 28) (28) (28) are superimposed (see the imaginary line in (a)), and the caulking projections (281) (281) formed on the third unit component plates (28) (28) (28) (28) ) May be used as the heat shield plate (2) having a two-layer structure in which the crimping holes (261) (271) of the first and second unit constituting plates (26) and (27) are inserted and crimped.
[Brief description of the drawings]
FIG. 1 is a plan view of a heat shield plate (2) according to an embodiment of the invention of the present application. FIG. 2 is a plan view of a second unit component plate (22) and a third unit component plate (23) (24) appearing in FIG. FIG. 3 is an enlarged cross-sectional view of the main part of the III-III line in FIG. 2. FIG. 4 is a detailed view of the caulking portion of the first unit component plate (21) and the second unit component plate (22). [Fig. 5] Plan view of intermediate product before pressing heat shield plate (2) [Fig. 6] Side view of heat shield plate (2) of Fig. 1 [Fig. 7] First unit component plate (21) and second plate Enlarged view of the non-bonded part of the 1 unit component plate (21). [FIG. 8] Explanatory drawing of a modified example of the coupling mode of the first to third unit component plates (26), (27), and [28]. Sectional view showing application example of plate (2) [Fig. 10] Explanatory drawing of conventional example [Explanation of symbols]
(2) ・ ・ ・ Heat shield
(21) ・ ・ ・ First unit component board
(22) ... Second unit component plate
(23) ... Third unit component plate
(225) (235) ・ ・ ・ Screw protrusion
(216) (226) ・ ・ ・ Caulking hole
Claims (3)
隣接する前記単位構成板相互の連結部は、これら単位構成板相互を部分的に重ね合わせた部位内で局部的に結合されている遮熱板。Consists of a plurality of unit component plates that are connected so that no gap occurs as a whole when viewed from the front and back directions,
The connecting portions of the adjacent unit component plates are locally connected to each other in a portion where the unit component plates are partially overlapped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17036296A JP3682340B2 (en) | 1996-06-28 | 1996-06-28 | Heat shield plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17036296A JP3682340B2 (en) | 1996-06-28 | 1996-06-28 | Heat shield plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1019386A JPH1019386A (en) | 1998-01-23 |
JP3682340B2 true JP3682340B2 (en) | 2005-08-10 |
Family
ID=15903534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP17036296A Expired - Fee Related JP3682340B2 (en) | 1996-06-28 | 1996-06-28 | Heat shield plate |
Country Status (1)
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JP (1) | JP3682340B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100752048B1 (en) * | 2007-06-25 | 2007-08-27 | 주식회사 성지공조기술 | freezing burst prevention system for heat exchangers |
JP7044900B2 (en) | 2018-11-14 | 2022-03-30 | 株式会社アルバック | Vacuum heating device, reflector device |
KR102372926B1 (en) * | 2019-05-31 | 2022-03-11 | 주식회사 경동나비엔 | Combustion room and boiler having the same |
-
1996
- 1996-06-28 JP JP17036296A patent/JP3682340B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPH1019386A (en) | 1998-01-23 |
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