JPS60220593A - Hollow sheathed heater - Google Patents
Hollow sheathed heaterInfo
- Publication number
- JPS60220593A JPS60220593A JP7664284A JP7664284A JPS60220593A JP S60220593 A JPS60220593 A JP S60220593A JP 7664284 A JP7664284 A JP 7664284A JP 7664284 A JP7664284 A JP 7664284A JP S60220593 A JPS60220593 A JP S60220593A
- Authority
- JP
- Japan
- Prior art keywords
- sheathed heater
- metal pipe
- hollow sheathed
- hollow
- heating coil
- 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.)
- Pending
Links
Landscapes
- Resistance Heating (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、中空シーズヒータ、特に、中空の穴内な流通
する流体を加熱するための中空シーズヒータに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a hollow sheathed heater, and particularly to a hollow sheathed heater for heating fluid flowing in a hollow hole.
従来の中空シーズヒータは、第１図に示すように、外側
金属パイプ例えば外側金属パイプｌ内に両端に端子３．
弘な接続した発熱コイルコな挿入し、更に発熱コイ、／
Ｌ／−の内側に内側パイプ例えば内側金属パイプ！を挿
入して、該外側金属パイプｌに対して発熱コイルλ及び
内側金属パイプｊをほぼ同心九支持すると共に、これら
の間のすき間に耐熱電気絶縁粉末例えはマグネシア粉末
６を充填して構成されている。As shown in FIG. 1, a conventional hollow sheathed heater has terminals 3.
Insert the connected heating coil, and then insert the heating coil, /
Inner pipe inside L/-, for example, inner metal pipe! is inserted to support the heating coil λ and the inner metal pipe J almost concentrically with respect to the outer metal pipe L, and the gap between them is filled with heat-resistant electrical insulating powder, for example magnesia powder 6. ing.
このような中空シーズヒータの主な用途としては、第１
図に示すように、内側金属パイプＳ内に、矢印Ａのよう
に、水や空気等の流体りを流して加熱する等に使用され
る。The main uses of such hollow sheathed heaters are
As shown in the figure, it is used for heating by flowing a fluid such as water or air into the inner metal pipe S as indicated by arrow A.
このような従来の中空シーズヒータにおいては、内側金
属パイプ！に対し外側金属パイプｌの方が表面積が大さ
いから、その受熱量も大きく、従って、熱の損失が大と
なり、流体７の加熱効率が悪くなるという欠点を有して
いる。In such conventional hollow sheathed heaters, the inner metal pipe! On the other hand, since the outer metal pipe l has a larger surface area, it receives a larger amount of heat, and therefore has the disadvantage that the heat loss is large and the heating efficiency of the fluid 7 is poor.
本発明は、このような従来の中空シーズヒータの欠点を
解消し、加熱効率の良い中空シーズヒータを得ることを
目的としてなされたものであって、そのために、内側パ
イプの外径面に突出した複数個の凸起を設けて受熱面積
な拡大して伝熱効率を向上した加熱効率のよい中空シー
ズヒータを提供しようとするものである。The present invention was made for the purpose of eliminating the drawbacks of the conventional hollow sheathed heater and obtaining a hollow sheathed heater with good heating efficiency. It is an object of the present invention to provide a hollow sheathed heater with good heating efficiency in which a plurality of protrusions are provided to increase the heat receiving area and improve heat transfer efficiency.
以下、本発明をその一実施例を示す図面に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on drawings showing one embodiment thereof.
第２図及び第３図において、符号ｌは外側パイプ例えば
外側金属パイプで、鉄、ステンレス鋼、銅などのパイプ
から成る。コは発熱コイルで、両端に端子３．ダを接続
し、外側金属パイプｔのほぼ中心に挿入されている。In FIGS. 2 and 3, reference numeral l designates an outer pipe, for example an outer metal pipe, which is made of iron, stainless steel, copper, or the like. This is a heating coil with 3 terminals on both ends. The outer metal pipe t is inserted approximately into the center of the outer metal pipe t.
また、符号／／は内側パイプ例えば内側金属パイプであ
って、鉄、ステンレス鋼、銅パイプよりなるパイプで、
発熱コイルスのほぼ中心に挿入されており、その外周面
には、その半径方向に突出した複数個の凸起ｌλが少な
（とも発熱コイルスが配設されている範囲内にわたって
設けられている。Also, the symbol // is an inner pipe, for example, an inner metal pipe, which is a pipe made of iron, stainless steel, or copper pipe.
It is inserted approximately in the center of the heating coil, and a plurality of protrusions lλ protruding in the radial direction are provided on its outer circumferential surface with a small number (all extending within the range where the heating coil is disposed).
なお、符号６は従来装置と同様に外側金属パイプｌと内
側金属パイプ１１と発熱コイルスとのすきまに充填され
ている耐熱電気絶縁粉末、例えば、マグネシア粉末、７
も同様に内側パイプ１１内を流れる水や空気の流体であ
る。Incidentally, the reference numeral 6 denotes heat-resistant electrical insulating powder, such as magnesia powder, 7, which is filled in the gap between the outer metal pipe 1, the inner metal pipe 11, and the heating coils, as in the conventional device.
Similarly, it is a fluid such as water or air flowing inside the inner pipe 11.
なお、上記実施例では凸起ｌコを軸方向に連続したもの
について説明したが、これに限らず、円周方向に連続し
た凸起としてもよい。In addition, in the above embodiment, the protrusions l are continuous in the axial direction, but the present invention is not limited to this, and the protrusions may be continuous in the circumferential direction.
本発明の中空シーズヒータは、上記のように構成されて
いるので、発熱コイルスに通電されて発生した熱は、マ
グネシア粉末基に伝わり、次いで、外側金属パイプｌ及
び内側金属パイプｉｔへと伝導して温度上昇するが、本
発明のように、内側金属パイプ／／の外周面に複数個の
凸起ｌコが設ゆられているために、表面積が大きくなり
、従って、発熱コイルスよりの熱を広い面積で受けるこ
とができる。その結果、内側金属パイプ／／側への・。Since the hollow sheathed heater of the present invention is configured as described above, the heat generated by energizing the heating coils is transmitted to the magnesia powder base, and then to the outer metal pipe l and the inner metal pipe it. However, as in the present invention, since a plurality of protrusions are provided on the outer peripheral surface of the inner metal pipe, the surface area becomes large, and therefore the heat from the heating coil is absorbed. Can be received over a wide area. As a result, the inner metal pipe // to the side.
熱移動も太き（なるので、当然内側金属パイプ／／内を
流れる流体７に対しても、加熱効率の良い加 □熱がで
き、従って、性能も向上し且つ省エネタイプの加熱装置
を実現し得る中空シーズヒータな得ることかできる効果
を有している。The heat transfer is also large (because of course, the fluid 7 flowing inside the inner metal pipe can be heated with good heating efficiency. Therefore, the performance is improved and an energy-saving type heating device is realized. The hollow sheathed heater has the effect that can be obtained.
＄１図は従来の中空シーズヒータを示す縦断面図、第２
図は本発明の一実施例の中空シーズヒータの縦断面図、
第３図は第２図のｔｕ−ｍ線による断面図である。
図中、ｌ・・外側パイプ（外側金属パイプ）、λ・・発
熱コイル、ｊ、ｌＩ・・端子、ｓ、ｉｔ・・内側パイプ
（内側金属パイプ）、６・・耐熱電気絶縁粉末（マグネ
シア粉末）、７・・流体、１２・・凸起。
なお、各図中、同一符号は同−父は相当部分を示す。
第１図
第３図Figure 1 is a vertical cross-sectional view showing a conventional hollow sheathed heater.
The figure is a longitudinal sectional view of a hollow sheathed heater according to an embodiment of the present invention.
FIG. 3 is a sectional view taken along the t-m line in FIG. 2. In the figure, l...outer pipe (outer metal pipe), λ...heating coil, j, lI...terminal, s, it...inner pipe (inner metal pipe), 6...heat-resistant electrical insulating powder (magnesia powder) ), 7...Fluid, 12... Convexity. In each figure, the same reference numerals indicate corresponding parts. Figure 1 Figure 3
Claims (1)
ルとの間を耐熱電気絶縁粉末によって絶縁している中空
シーズヒータにおいて、上記二重管の内側パイプは、そ
の外径面に半径方向に突出した複数個の凸起が少なくと
も上記発熱コイルの配設されている範囲内圧わたって設
けられていることを特徴とする中空シーズヒータ。In a hollow sheathed heater in which a heating coil is inserted between double tubes and the double tube and the heat generating coil are insulated by heat-resistant electrical insulating powder, the inner pipe of the double tube has a A hollow sheathed heater characterized in that a plurality of protrusions protruding in the radial direction are provided over at least the pressure range within which the heating coil is disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7664284A JPS60220593A (en) | 1984-04-18 | 1984-04-18 | Hollow sheathed heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7664284A JPS60220593A (en) | 1984-04-18 | 1984-04-18 | Hollow sheathed heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60220593A true JPS60220593A (en) | 1985-11-05 |
Family
ID=13611033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7664284A Pending JPS60220593A (en) | 1984-04-18 | 1984-04-18 | Hollow sheathed heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60220593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017009255A (en) * | 2015-06-26 | 2017-01-12 | 新熱工業株式会社 | Fluid heater |
-
1984
- 1984-04-18 JP JP7664284A patent/JPS60220593A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017009255A (en) * | 2015-06-26 | 2017-01-12 | 新熱工業株式会社 | Fluid heater |
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