JPH08167468A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JPH08167468A JPH08167468A JP30860994A JP30860994A JPH08167468A JP H08167468 A JPH08167468 A JP H08167468A JP 30860994 A JP30860994 A JP 30860994A JP 30860994 A JP30860994 A JP 30860994A JP H08167468 A JPH08167468 A JP H08167468A
- Authority
- JP
- Japan
- Prior art keywords
- electric
- heating
- metal sheath
- insulating material
- liquid
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は湯水を加熱保温する電気
温水器の加熱装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for an electric water heater which heats and keeps hot water.
【０００２】[0002]
【従来の技術】従来のこの種の加熱装置としては、図３
従来の加熱装置の外観平面図、図４その発熱体の一部断
面図に示すごとく、液体を加熱する発熱体であるシーズ
ヒータ９と、液体が通る通水管２と、これらシーズヒー
タ９と通水管２を一体に結合する伝熱性の金属部分３と
から構成されている加熱装置において、前記シーズヒー
タ９は電気発熱線４とこの電気発熱線４を覆う電気絶縁
材５と、この電気絶縁材５を覆う管状の金属シース６か
らなる一般的なシーズヒータを用いたもの（例えば特開
平５−３１２４０６号公報参照）がある。2. Description of the Related Art A conventional heating device of this type is shown in FIG.
As shown in an external plan view of a conventional heating device and FIG. 4 which is a partial cross-sectional view of the heating element, a sheathed heater 9 which is a heating element for heating a liquid, a water passage pipe 2 through which the liquid passes, and these sheathed heaters 9 are connected. In a heating device composed of a heat conductive metal part 3 that integrally connects the water pipes 2, the sheathed heater 9 has an electric heating wire 4, an electric insulating material 5 covering the electric heating wire 4, and the electric insulating material. There is one using a general sheathed heater composed of a tubular metal sheath 6 covering 5 (see, for example, JP-A-5-312406).
【０００３】[0003]
【発明が解決しようとする課題】前記従来の加熱装置で
は、加熱する液体に水を用いる電気温水器等の場合、シ
ーズヒータ９が寿命末期において電気絶縁材５の絶縁性
能が劣化し絶縁抵抗が低下し、さらに電気発熱線４が寿
命断線する際の局部発熱によって、電気発熱線４等電気
充電部と金属シース６の間が短絡現象を起し、電気温水
器の利用者が通水管２を通る水を介して感電する畏れが
あるという安全上の問題があった。In the above conventional heating device, in the case of an electric water heater using water as the liquid to be heated, the sheath heater 9 deteriorates the insulation performance of the electric insulating material 5 at the end of its life, and the insulation resistance increases. Due to local heat generation when the electric heating wire 4 is broken and the life of the electric heating wire 4 is broken, a short circuit phenomenon occurs between the electric charging part such as the electric heating wire 4 and the metal sheath 6, and the user of the electric water heater connects the water pipe 2 to the water pipe 2. There was a safety problem that there was a fear of electric shock through the water that passed through.
【０００４】本発明は寿命末期においても安全に通電機
能が停止するようにすることを目的とする。An object of the present invention is to safely stop the energizing function even at the end of life.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の課題を
解決するためになされたものであり、液体を加熱する発
熱体と、液体が通る通水管と、発熱体と通水管を一体に
結合する伝熱性の金属部分とから構成されている加熱装
置において、発熱体は電気発熱線とこの電気発熱線を覆
う電気絶縁材と、この電気絶縁材を覆う管状の金属シー
スと、この金属シースを覆う外側の電気絶縁材と、この
外側の電気絶縁材を覆う管状の外側の金属シースから構
成した。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a heating element for heating a liquid, a water pipe through which the liquid passes, and a heating element and a water pipe are integrally formed. In a heating device composed of a heat conductive metal part to be coupled, the heating element is an electric heating wire, an electric insulating material covering the electric heating wire, a tubular metal sheath covering the electric insulating material, and the metal sheath. And an outer metal insulating sheath that covers the outer electrical insulating material and a tubular outer metal sheath that covers the outer electrical insulating material.
【０００６】[0006]
【作用】このような構成にしたことにより、通常時金属
部分は発熱体が発生する熱を通水管に良く伝熱し効率良
く液体を加熱させる。また、電気発熱線が寿命末期にお
いては電気絶縁材の絶縁性能が劣化し絶縁抵抗が低下
し、さらに電気発熱線が寿命断線する際に局部的に電気
発熱線が細くなり局部発熱を起し電気発熱線と内側の金
属シースの間が短絡現象を呈しても、金属シースは局部
発熱の影響を遮断し、外側の電気絶縁材料は健全な絶縁
状態を維持し、電気発熱線と外側の電気シースの間、電
気充電部である電気発熱線と通水管の間、従って電気充
電部と加熱液体の間の絶縁状態を維持する作用をする。With this structure, the metal portion normally transfers the heat generated by the heating element to the water pipe to efficiently heat the liquid. In addition, at the end of the life of the electric heating wire, the insulation performance of the electrical insulating material deteriorates and the insulation resistance decreases, and when the electric heating wire is disconnected from its life, the electric heating wire locally becomes thin and local heat is generated, resulting in electrical Even if a short circuit occurs between the heating wire and the inner metal sheath, the metal sheath blocks the effect of local heat generation, the outer electrically insulating material maintains a healthy insulating state, and the electric heating wire and the outer electrical sheath In the meantime, it acts to maintain an insulating state between the electric heating line, which is the electric charging unit, and the water pipe, and thus the electric charging unit and the heating liquid.
【０００７】[0007]
【実施例】以下、本発明の一実施例を図面により説明す
る。図１は本発明の一実施例を示す加熱装置の外観平面
図であり、図２は同じく発熱体の一部断面図である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external plan view of a heating device showing an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of the heating element.
【０００８】図１において、液体を加熱する発熱体であ
るシーズヒータ１と、ステンレスパイプからなり液体を
通水する通水管２が伝熱性のアルミニウム合金等からな
る金属部分３で一体に結合されて加熱装置が構成されて
いる。In FIG. 1, a sheath heater 1 which is a heating element for heating a liquid and a water pipe 2 made of a stainless steel pipe for passing a liquid are integrally connected by a metal portion 3 made of a heat conductive aluminum alloy or the like. A heating device is configured.
【０００９】図２において前記シーズヒータ１は、電気
発熱線４とこの電気発熱線４を覆う酸化マグネシウム粉
末等からなる電気絶縁材５と、この電気絶縁材５を覆う
ステンレスパイプ等からなる管状の金属シース６と、こ
の金属シース６を覆う酸化マグネシウム粉末等からなる
外側の電気絶縁材７と、この外側の電気絶縁材７を覆う
ステンレスパイプ等からなる管状の外側の金属シース８
から構成されている。従ってこの外側の金属シース８と
金属部分３で一体に結合されていることになる。In FIG. 2, the sheath heater 1 has a tubular shape made up of an electric heating wire 4, an electric insulating material 5 made of magnesium oxide powder or the like for covering the electric heating wire 4, and a stainless pipe for covering the electric insulating material 5. A metal sheath 6, an outer electrical insulating material 7 made of magnesium oxide powder or the like for covering the metal sheath 6, and a tubular outer metal sheath 8 made of a stainless pipe or the like for covering the outer electrical insulating material 7.
It consists of Therefore, the outer metal sheath 8 and the metal portion 3 are integrally connected.
【００１０】次に、上記構成の作用について説明する。Next, the operation of the above configuration will be described.
【００１１】電気発熱線４に通電されると発熱し、その
熱は電気絶縁材５、金属シース６、外側の電気絶縁材７
さらに外側の金属シース８を介して金属部分３に伝熱す
る。従って通水管２の内部を液体が流れ、この液体を加
熱するに必要な熱量はシーズヒータ１から金属部分３を
介し通水管２の内部へ供給される。When the electric heating wire 4 is energized, heat is generated, and the heat is generated by the electric insulating material 5, the metal sheath 6, and the outer electric insulating material 7.
Further, heat is transferred to the metal portion 3 via the outer metal sheath 8. Therefore, the liquid flows through the inside of the water pipe 2, and the heat amount necessary for heating the liquid is supplied from the sheath heater 1 to the inside of the water pipe 2 through the metal portion 3.
【００１２】加熱装置を長期間使用し、寿命末期におい
て電気絶縁材５の絶縁性能が劣化し絶縁抵抗が低下し、
さらに電気発熱線４が寿命断線する際に局部的に電気発
熱線４が細くなることから、この部分で局部発熱を起
し、電気発熱線４と金属シース６の間が短絡現象を呈す
る。この時の局部発熱の影響は金属シース６によって遮
断され、外側の電気絶縁材７は健全な状態に維持でき
る。When the heating device is used for a long time, the insulation performance of the electric insulating material 5 deteriorates at the end of its life, and the insulation resistance decreases,
Furthermore, when the electric heating wire 4 is broken in service life, the electric heating wire 4 is locally thinned, so that local heat is generated in this portion, and a short circuit phenomenon occurs between the electric heating wire 4 and the metal sheath 6. The influence of local heat generation at this time is blocked by the metal sheath 6, and the outer electrical insulating material 7 can be maintained in a healthy state.
【００１３】従って、電気充電部である電気発熱線４と
外側の金属シース８の間、電気発熱線４と通水管２の間
は絶縁が維持された状態、即ち電気充電部と加熱液体の
間は絶縁された状態で、電気発熱線４が断線し、加熱装
置は利用者に対し安全な状態で通電機能を停止する。Therefore, insulation is maintained between the electric heating wire 4 which is the electric charging portion and the outer metal sheath 8 and between the electric heating wire 4 and the water pipe 2, that is, between the electric charging portion and the heating liquid. In the insulated state, the electric heating wire 4 is broken, and the heating device stops the energizing function in a safe state for the user.
【００１４】[0014]
【発明の効果】以上、本発明によれば、液体を加熱する
発熱体と、液体が通る通水管と、発熱体と通水管を一体
に結合する伝熱性の金属部分とから加熱装置を構成して
いるので、通常は金属部分は発熱体が発生する熱を通水
管に良く伝熱し効率良く液体を加熱させることができ、
発熱体は電気発熱線と電気発熱線を覆う電気絶縁材と、
電気絶縁材を覆う管状の金属シースと、金属シースを覆
う外側の電気絶縁材と、外側の電気絶縁材を覆う管状の
外側の金属シースとで構成したので、電気発熱線の断線
時において電気充電部と加熱液体の間は電気絶縁を維持
され、寿命末期においても利用者に対し安全な状態で、
通電状態が停止する加熱装置を提供できるという効果が
ある。As described above, according to the present invention, the heating device is constituted by the heating element for heating the liquid, the water pipe through which the liquid passes, and the heat-conductive metal portion integrally connecting the heating element and the water pipe. Therefore, the metal part normally transfers the heat generated by the heating element well to the water pipe and can efficiently heat the liquid,
The heating element is an electric heating wire and an electric insulating material covering the electric heating wire,
It consists of a tubular metal sheath that covers the electrical insulation material, an outer electrical insulation material that covers the metal sheath, and a tubular outer metal sheath that covers the outer electrical insulation material. The electrical insulation between the parts and the heated liquid is maintained, and it is safe for users even at the end of their life.
There is an effect that it is possible to provide a heating device in which the energized state is stopped.
【図１】本発明の一実施例を示す加熱装置の外観平面図
である。FIG. 1 is an external plan view of a heating device showing an embodiment of the present invention.
【図２】同じく発熱体の一部断面図である。FIG. 2 is a partial cross-sectional view of a heating element of the same.
【図３】従来の加熱装置の外観平面図である。FIG. 3 is an external plan view of a conventional heating device.
【図４】同じく発熱体の一部断面図である。FIG. 4 is a partial cross-sectional view of the heating element of the same.
１ 発熱体（シーズヒータ） ２ 通水管 ３ 金属部分 ４ 電気発熱線 ５、７ 電気絶縁材 ６、８ 金属シース 1 Heat generating element (sheath heater) 2 Water passage pipe 3 Metal part 4 Electric heating wire 5, 7 Electric insulating material 6, 8 Metal sheath
Claims (1)
通水管２と、これら発熱体１と通水管２を一体に結合す
る伝熱性の金属部分３とから構成されている加熱装置に
おいて、前記発熱体１は電気発熱線４とこの電気発熱線
４を覆う電気絶縁材５と、この電気絶縁材５を覆う管状
の金属シース６と、この金属シース６を覆う外側の電気
絶縁材７と、この外側の電気絶縁材７を覆う管状の外側
の金属シース８から構成したことを特徴とする加熱装
置。1. A heating device comprising a heating element 1 for heating a liquid, a water passage pipe 2 through which the liquid passes, and a heat-conducting metal portion 3 integrally connecting the heating element 1 and the water passage pipe 2 in a heating device. The heating element 1 includes an electric heating wire 4, an electric insulating material 5 covering the electric heating wire 4, a tubular metal sheath 6 covering the electric insulating material 5, and an outer electric insulating material 7 covering the metal sheath 6. And a tubular outer metal sheath 8 that covers the outer electrical insulating material 7, and a heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30860994A JPH08167468A (en) | 1994-12-13 | 1994-12-13 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30860994A JPH08167468A (en) | 1994-12-13 | 1994-12-13 | Heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08167468A true JPH08167468A (en) | 1996-06-25 |
Family
ID=17983108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30860994A Pending JPH08167468A (en) | 1994-12-13 | 1994-12-13 | Heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08167468A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105090A (en) * | 2008-07-21 | 2011-06-22 | Lg电子株式会社 | A steam head for cleanner |
| CN102281655A (en) * | 2011-07-20 | 2011-12-14 | 孙靖茗 | Heating wire |
| CN102798218A (en) * | 2012-07-23 | 2012-11-28 | 宁波宇峰电热器有限公司 | Heater for foot basin |
| CN103318207A (en) * | 2013-05-31 | 2013-09-25 | 镇江天信电器有限公司 | Electric heating device of passenger car |
-
1994
- 1994-12-13 JP JP30860994A patent/JPH08167468A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105090A (en) * | 2008-07-21 | 2011-06-22 | Lg电子株式会社 | A steam head for cleanner |
| CN102281655A (en) * | 2011-07-20 | 2011-12-14 | 孙靖茗 | Heating wire |
| CN102798218A (en) * | 2012-07-23 | 2012-11-28 | 宁波宇峰电热器有限公司 | Heater for foot basin |
| CN103318207A (en) * | 2013-05-31 | 2013-09-25 | 镇江天信电器有限公司 | Electric heating device of passenger car |
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