JPS64492Y2 - - Google Patents
Info
- Publication number
- JPS64492Y2 JPS64492Y2 JP11937283U JP11937283U JPS64492Y2 JP S64492 Y2 JPS64492 Y2 JP S64492Y2 JP 11937283 U JP11937283 U JP 11937283U JP 11937283 U JP11937283 U JP 11937283U JP S64492 Y2 JPS64492 Y2 JP S64492Y2
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- concave surface
- curved
- heating element
- electric heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005485 electric heating Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Electric Stoves And Ranges (AREA)
- Control Of Resistance Heating (AREA)
Description
【考案の詳細な説明】
本考案は、輻射ヒータにおける反射板の熱歪に
よる変形を防止した反射板の改良に関するもので
ある。[Detailed Description of the Invention] The present invention relates to an improvement of a reflector in a radiant heater that prevents deformation of the reflector due to thermal distortion.
従来、この種の輻射ヒータにおける反射板は、
一般に、第１図を参照して説明すると、反射板２
は、縦長の前面が開放された断面コ字形状のケー
シング本体１内部に、光輝アルミニウム板を断面
二次曲線状２ａに彎曲して、その彎曲凹面２ｂが
前方を向くように配設され、前記彎曲凹面２ｂの
ほぼ焦点位置に縦長に赤外線ヒータなどの電気発
熱体ｅを配設したもので、前記電気発熱体ｅへの
通電により電気発熱体ｅの輻射熱を反射板２の前
記彎曲凹面２ｂ、その他二次曲線面２ａで前方開
放側へ反射して暖房するようにしたものである
が、前記彎曲凹面２ｂの焦点位置にある電気発熱
体ｅは高温であるため、前記彎曲凹面２ｂ、これ
に連なる二次曲線面２ａが高温に加熱され、しか
も前記反射板各面に温度ムラが生ずるため、反射
板２は熱歪変形し、この変形により電気発熱体ｅ
からの輻射熱が反射板２によつて真直前方に反射
されなかつたり、また、電気発熱体ｅと前記反射
板２の彎曲凹面２ｂが著しく接近したり、ついに
は接触したりして放熱効率が著しく低下するもの
である。 Conventionally, the reflector in this type of radiant heater is
Generally speaking, referring to FIG. 1, the reflector 2
In this case, a bright aluminum plate is arranged inside a casing main body 1 having a U-shaped cross section with an open vertically long front surface, with a bright aluminum plate curved in a cross-sectional quadratic curve shape 2a so that the curved concave surface 2b faces forward. An electric heating element e such as an infrared heater is arranged vertically at approximately the focal point of the curved concave surface 2b, and when the electric heating element e is energized, the radiant heat of the electric heating element e is transferred to the curved concave surface 2b of the reflecting plate 2, The other quadratic curved surface 2a heats the body by reflecting it toward the open front side, but since the electric heating element e located at the focal point of the curved concave surface 2b has a high temperature, the curved concave surface 2b Since the continuous quadratic curved surfaces 2a are heated to a high temperature and temperature unevenness occurs on each surface of the reflecting plate, the reflecting plate 2 is deformed by thermal strain, and this deformation causes the electric heating element e
The radiant heat from the reflector 2 may not be reflected directly forward by the reflector 2, or the electric heating element e and the curved concave surface 2b of the reflector 2 may come very close to each other, and may even come into contact with each other, resulting in poor heat dissipation efficiency. This is a significant decrease.
斯かる現象を避け熱歪変形を少くするために、
本考案者らは先に改良案を提案（昭和57年５月29
日出願、実願昭57−79212号）したが、この改良
案の概要を第４図、第５図に基づいて説明する
と、反射板ａは、一枚板の例えばアルミニウム製
法板でつくられ、縦長の断面二次曲線状a1に彎曲
して、その彎曲凹面a2が前方を向くように、縦長
の前面が開放された断面コ字形状のケーシング本
体Ｃ内部に配設され、反射板ａの背面に、反射板
ａの二次曲線面a1に当接して一対の半割状の反射
板支持部材b1，b2を複数個所で添設し、ケーシン
グ本体ｃの開放端縁部、反射板ａの開放端縁部、
反射板支持部材b1，b2の開放端縁部をそれぞれ左
右の結合部材d1，d2に嵌挿係止させて、ケーシン
グ本体ｃに反射板ａを固定支持している。 In order to avoid this phenomenon and reduce thermal strain deformation,
The inventors first proposed an improvement plan (May 29, 1981)
The outline of this improvement plan will be explained based on FIGS. 4 and 5. The reflecting plate a is made of a single plate, for example, an aluminum plate; The reflecting plate a is arranged inside the casing main body C, which has a U-shaped cross section with an open vertical front surface, and is curved in a vertically elongated quadratic curve shape a1 , with its curved concave surface a2 facing forward. A pair of half-shaped reflector support members b 1 and b 2 are attached at multiple locations on the back surface of the casing body c in contact with the quadratic curved surface a 1 of the reflector a, and the open end edge of the casing body c is an open end edge of the reflector a;
The open end edges of the reflector support members b 1 and b 2 are fitted and locked into the left and right coupling members d 1 and d 2 , respectively, to fixedly support the reflector a on the casing body c.
この提案によるときは、反射板ａの後方への熱
歪変形は複数の反射板支持部材b1，b2…によつて
規制されるが、前方への熱歪変形は結合部材d1，
d2の個所のみで規制しているので、一部の効果し
かなく、電気発熱体ｅに最も近くて最も高温とな
る二次曲線面２ａの彎曲凹面２ｂの部分では、背
面側に反射板支持部材b1，b2…があるのみで前方
に対しては全く自由であるため、後方変形に対し
ては効果があつても前方変形に対しては効果がな
く、前記変形による放熱効率の低下は依然として
免かれず、十分なものとはいえない。 According to this proposal, the rearward thermal strain deformation of the reflector a is regulated by the plurality of reflector support members b 1 , b 2 . . . , but the forward thermal strain deformation is restricted by the coupling members d 1 ,
Since it is restricted only at the point d 2 , it has only a partial effect.On the curved concave surface 2b of the quadratic curved surface 2a, which is closest to the electric heating element e and has the highest temperature, a reflector is supported on the back side. There are only members b 1 , b 2 ..., and they are completely free from the front, so even if they are effective against backward deformation, they are not effective against forward deformation, and the heat dissipation efficiency decreases due to the deformation. still remains unavoidable and not sufficient.
本考案は斯かる欠陥に鑑みこれを改良すべく考
案したもので、本考案の目的とするところは、輻
射ヒータにおける反射板は、前記の如く電気発熱
体の輻射熱により高温雰囲気中に曝されるが、簡
易な改良により熱歪変形を極力少なくするため
に、種々実験の結果、熱歪変形の最も起り易い個
所が中央部の切欠孔の位置と中央部と上、下端部
との中間位置であることを発見し、少くともこの
位置に周方向に補強リブを設けて前方および後方
に対して熱歪変形を防止せんとするものである。 The present invention was devised in order to improve this defect, and the purpose of the present invention is to prevent the reflection plate in a radiant heater from being exposed to a high temperature atmosphere due to the radiant heat of the electric heating element as described above. However, in order to minimize thermal strain deformation through simple improvements, various experiments have shown that the locations where thermal strain deformation is most likely to occur are the position of the notch hole in the central part and the intermediate position between the central part and the upper and lower ends. After discovering that there is, a reinforcing rib is provided in the circumferential direction at least at this position in order to prevent thermal strain deformation in the front and rear directions.
本考案の構成は前記目的を達成するために、断
面二次曲線状に彎曲して彎曲凹面が前方を向くよ
うに断面コ字形状のケーシング本体内部に配設さ
れ、前記彎曲凹面のほぼ焦点位置に電気発熱体を
配設する反射板において、該反射板の中央部にお
ける前記電気発熱体の支持部材取付用の長丸孔の
上下近傍位置および前記中央部と上下端部との中
間位置にそれぞれ断面Ｖ字状あるいはＵ字状の補
強用リブを周方向に設けて成る輻射ヒータにおけ
る反射板としたことを特徴とする。 In order to achieve the above object, the configuration of the present invention is arranged inside a casing main body having a U-shaped cross section so that the curved concave surface faces forward, and the curved concave surface is located almost at the focal point of the curved concave surface. In a reflector plate in which an electric heating element is disposed in the center part of the reflector plate, at positions near the top and bottom of an elongated round hole for attaching a support member for the electric heat generating element in the center part of the reflector plate, and at a position intermediate between the center part and the top and bottom ends, respectively. The present invention is characterized in that it is used as a reflecting plate in a radiant heater in which reinforcing ribs having a V-shaped or U-shaped cross section are provided in the circumferential direction.
以下本考案の実施例を添付図面に基づいて説明
する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は、輻射ヒータＡの全体概略斜視図であ
り、１はケーシング本体で、縦長で前方が開放さ
れた断面コ字形状になつており、２は本考案反射
板で該ケーシング本体１内部に、縦長の断面二次
曲線状２ａに彎曲して、その彎曲凹面２ｂが前方
を向くように配設されており、例えば光輝アルミ
ニウム板でつくられている。ｅは前記反射板２の
彎曲凹面２ｂのほぼ焦点位置に縦長に配設された
赤外線ヒータなどの電気発熱体であり、３はケー
シング本体１の開放端部、反射板２の開放端縁部
を嵌挿係合させた結合部材であり、５はグリルで
ある。 FIG. 1 is an overall schematic perspective view of the radiant heater A. 1 is a casing body, which is vertically elongated and has a U-shaped cross section with an open front, and 2 is a reflector of the present invention, which is inside the casing body 1. It is curved in a longitudinally elongated quadratic cross-sectional shape 2a, with its curved concave surface 2b facing forward, and is made of, for example, a bright aluminum plate. e is an electric heating element such as an infrared heater, which is vertically disposed approximately at the focal point of the curved concave surface 2b of the reflecting plate 2; This is a coupling member that is fitted and engaged, and 5 is a grill.
第２図、第３図は本考案反射板であつて、第２
図は斜視図、第３図は展開図であり、反射板２は
前記の如く二次曲線面２ａとその央部の彎曲凹面
２ｂとにより形成され、４は長丸孔で、前記電気
発熱体ｅが長尺のためその中央部で支持するため
の支持部材（図示せず）を取付けするための孔
で、反射板２の央部２ｃに穿設され、その形状
は、実験の結果によると矩形状よりも長丸状の方
が熱歪の切欠効果が少ないことが分かり長丸状の
方が良い。 Figures 2 and 3 show the reflector plate of the present invention.
The figure is a perspective view, and FIG. 3 is a developed view.As described above, the reflecting plate 2 is formed by the quadratic curved surface 2a and the curved concave surface 2b in the center, and 4 is an elongated hole, and the electric heating element This is a hole for attaching a support member (not shown) to support the center part of e because it is long, and is bored in the center part 2c of the reflector plate 2, and its shape is according to the results of experiments. It has been found that the notch effect of thermal distortion is smaller in an oblong shape than in a rectangular shape, and the oblong shape is better.
５ａ，５ｂは、反射板２の央部２ｃに設けた前
記長丸孔４の上，下近傍位置に設けた周方向の補
強用リブ、６ａ，６ｂはそれぞれ前記反射板２の
央部２ｃと上，下端部２ｄ，２ｅの中間位置に設
られた周方向の補強用リブであり、これら補強用
リブは断面Ｖ字状あるいはＵ字状に形成される。
なお、５ｃ…、６ｃ…は、切欠であつて、前記第
３図の如き反射板支持部材b1を反射板２背面に設
けるときの結合部材d1，d2取付用の逃げである。 5a and 5b are reinforcing ribs in the circumferential direction provided near the top and bottom of the oblong hole 4 provided in the central portion 2c of the reflecting plate 2; This is a reinforcing rib in the circumferential direction provided at an intermediate position between the upper and lower end portions 2d and 2e, and these reinforcing ribs are formed in a V-shape or a U-shape in cross section.
Note that 5c..., 6c... are notches, and are reliefs for attaching the coupling members d1 , d2 when the reflector support member b1 as shown in FIG. 3 is provided on the back surface of the reflector 2.
前記実施例においては、補強用リブを反射板２
の央部２ｃの長丸孔４の上，下近傍と、央部２ｃ
と上，下端部２ｄ，２ｅの中間位置の最も熱歪の
大きい４個所に設けたが、央部２ｃに長丸孔４の
切欠のないときはこの部分は１つの補強リブで良
く、また、反射板２の長さによつてはもつと多数
の補強用リブを設けても良く、これら補強用リブ
は熱応力に対し、前方または後方への熱歪を吸収
して反射板２の反射面の前方または後方への変形
を防止して二次曲線面２ａ、彎曲凹面２ｂを保持
するものである。 In the above embodiment, the reinforcing ribs are attached to the reflecting plate 2.
Near the top and bottom of the oblong hole 4 in the central part 2c, and in the central part 2c
The reinforcing ribs are provided at the four locations where the thermal strain is the largest, which is the intermediate position between the upper and lower end portions 2d and 2e, but if the central portion 2c does not have a notch for the oblong hole 4, one reinforcing rib may be sufficient for this portion; Depending on the length of the reflector plate 2, a large number of reinforcing ribs may be provided, and these reinforcing ribs absorb thermal strain toward the front or back against thermal stress, and improve the reflective surface of the reflector plate 2. This is to prevent forward or backward deformation and maintain the quadratic curved surface 2a and the curved concave surface 2b.
本考案は以上の如くであり、本考案は、断面二
次曲線状２ａに彎曲して彎曲凹面２ｂが前方を向
くように断面コ字形状のケーシング本体１内部に
配設され、前記彎曲凹面２ｂのほぼ焦点位置に電
気発熱体ｅを配設する反射板２において、該反射
板２の中央部２ｃにおける前記電気発熱体ｅの支
持部材取付用の長丸孔４の上下近傍位置および前
記中央部２ｃと上下端部２ｄ，２ｅとの中間位置
にそれぞれ断面Ｖ字状あるいはＵ字状の補強用リ
ブを周方向に設けて成る輻射ヒータにおける反射
板としたので、補強用リブの作用で機械的強度が
向上することは勿論、熱歪に対して反射板２の二
次曲線面２ａ、彎曲凹面２ｂの前方向または後方
向への歪がリブの部分で吸収され、また反射板２
各面に温度ムラがあり熱歪にムラがあるが、同様
にリブで吸収され、前記曲面２ａおよび２ｂの曲
率は保持されるので、前記例の如く反射面の曲面
の変形により反射効率の低下はなく、放熱効率が
低下することはなく、また、前記の如く補強用リ
ブを複数個所設けるだけで良いので、加工容易で
製造コストアツプを招くことも少くないという効
果を奏する。 The present invention is as described above, and the present invention is arranged inside a casing main body 1 having a U-shaped cross section so that the curved concave surface 2b is curved in a quadratic curve shape 2a and faces forward, and the curved concave surface 2b In a reflecting plate 2 in which an electric heating element e is disposed at approximately the focal position of the reflecting plate 2, a position near the top and bottom of an elongated round hole 4 for attaching a support member for the electric heating element e in the central part 2c of the reflecting plate 2 and the central part 2c and the upper and lower ends 2d and 2e, each of which has a V-shaped or U-shaped cross section, is provided as a reflecting plate in the circumferential direction for reinforcing ribs. Not only does the strength improve, but also thermal distortion in the forward or backward direction of the quadratic curved surface 2a and curved concave surface 2b of the reflector 2 is absorbed by the rib portion, and the reflector 2
Although each surface has uneven temperature and thermal strain, it is absorbed by the ribs and the curvature of the curved surfaces 2a and 2b is maintained, so as in the above example, the reflection efficiency decreases due to the deformation of the curved surface of the reflecting surface. There is no reduction in heat dissipation efficiency, and since it is sufficient to provide reinforcing ribs at a plurality of locations as described above, it is easy to process and does not incur an increase in manufacturing costs.
第１図は輻射ヒータの全体概略斜視図、第２図
は本考案反射板の斜視図、第３図は同展開図、第
４図、第５図は先に提案した反射板で、第４図は
斜視図、第５図は輻射ヒータの横断面図である。
１……ケーシング本体、２……反射板、２ａ…
…二次曲線状（面）、２ｂ……彎曲凹面、２ｃ…
…中央部、２ｄ，２ｅ……上、下端部、４……長
丸孔、ｅ……電気発熱体。
Figure 1 is an overall schematic perspective view of the radiant heater, Figure 2 is a perspective view of the reflective plate of the present invention, Figure 3 is an expanded view of the same, Figures 4 and 5 are the previously proposed reflector, and Figure 4 is a perspective view of the reflector of the present invention. The figure is a perspective view, and FIG. 5 is a cross-sectional view of the radiant heater. 1...Casing body, 2...Reflector, 2a...
...quadratic curve (surface), 2b...curved concave surface, 2c...
...Central part, 2d, 2e... Upper and lower end parts, 4... Oblong hole, e... Electric heating element.
Claims (1)
前方を向くように断面コ字形状のケーシング本体
１内部に配設され、前記彎曲凹面２ｂのほぼ焦点
位置に電気発熱体ｅを配設する反射板２におい
て、該反射板２の中央部２ｃにおける前記電気発
熱体ｅの支持部材取付用の長丸孔４の上下近傍位
置および前記中央部２ｃと上下端部２ｄ，２ｅと
の中間位置にそれぞれ断面Ｖ字状あるいはＵ字状
の補強用リブを周方向に設けて成る輻射ヒータに
おける反射板。 It is arranged inside the casing main body 1 having a U-shaped cross section so that the curved concave surface 2b is curved in a quadratic curve shape 2a and faces forward, and the electric heating element e is disposed at approximately the focal point of the curved concave surface 2b. In the reflector plate 2, at the upper and lower positions of the elongated round hole 4 for attaching the support member of the electric heating element e in the center part 2c of the reflector plate 2, and at the intermediate position between the center part 2c and the upper and lower end parts 2d and 2e. A reflecting plate in a radiant heater that is provided with reinforcing ribs each having a V-shaped or U-shaped cross section in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937283U JPS6039817U (en) | 1983-07-29 | 1983-07-29 | Reflector in radiant heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937283U JPS6039817U (en) | 1983-07-29 | 1983-07-29 | Reflector in radiant heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039817U JPS6039817U (en) | 1985-03-20 |
| JPS64492Y2 true JPS64492Y2 (en) | 1989-01-09 |
Family
ID=30273991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11937283U Granted JPS6039817U (en) | 1983-07-29 | 1983-07-29 | Reflector in radiant heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039817U (en) |
-
1983
- 1983-07-29 JP JP11937283U patent/JPS6039817U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6039817U (en) | 1985-03-20 |
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