JPH03176990A - Immersion heater type sheathed heater and manufacture thereof - Google Patents
Immersion heater type sheathed heater and manufacture thereofInfo
- Publication number
- JPH03176990A JPH03176990A JP31340389A JP31340389A JPH03176990A JP H03176990 A JPH03176990 A JP H03176990A JP 31340389 A JP31340389 A JP 31340389A JP 31340389 A JP31340389 A JP 31340389A JP H03176990 A JPH03176990 A JP H03176990A
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- temperature
- heating wire
- thermal fuse
- fuse
- 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
- 238000007654 immersion Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 98
- 239000002184 metal Substances 0.000 claims abstract description 98
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 230000015556 catabolic process Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- 239000012777 electrically insulating material Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000000919 ceramic Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 239000008267 milk Substances 0.000 description 5
- 235000013336 milk Nutrition 0.000 description 5
- 210000004080 milk Anatomy 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、投込み電熱器または投込み湯沸器のための密
閉形発熱体およびその製造方法に関る、。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a closed heating element for an immersion electric heater or an immersion water heater, and a method for manufacturing the same.
（従来の技術）
従来、水、牛乳等（被加熱液体）の加熱のために密閉形
発熱体に柄を設けて成る投込み湯沸器が用いられている
。前記密閉形発熱体は、金属管と、前記金属管内に収容
されかつ前記金属管と電気的に絶縁された電熱線と、前
記電熱線に接続された温度ヒユーズとを備え、前記金属
管はステンレス鋼管、あるいは、銅管てあってその表１
１′ｉ１に鍍金が施された表面を有る、鋼管で構成され
ていた。(Prior Art) Conventionally, immersion water heaters have been used, which include a closed heating element with a handle, for heating water, milk, etc. (liquids to be heated). The sealed heating element includes a metal tube, a heating wire housed in the metal tube and electrically insulated from the metal tube, and a temperature fuse connected to the heating wire, and the metal tube is made of stainless steel. Table 1 of steel pipes or copper pipes
It consisted of a steel tube with a plated surface.
（発明か解決しようとる、課題〉
前記投込み湯沸器によれば、その密閉形発熱体を前記被
加熱液体に沈め、前記電熱線に通電る、ことによって行
なわれ、１１ｈ５己７！Ｉａ度ヒユーズは、１１ｈ記密
閉発熱体が空気中に露出される場合における前記金属管
の過加熱に伴なって溶断し、過加熱の継続にイ゛ｒ−な
う金属管の爆発、焼損等を防ぐ。(Problem to be solved by the invention) According to the above-mentioned immersion water heater, the closed heating element is submerged in the liquid to be heated, and the heating wire is energized. The fuse blows when the metal tube is overheated when the sealed heating element described in 11h is exposed to the air, and prevents the metal tube from exploding, burning out, etc. due to continued overheating. .
ところで、前記従来の投込み湯沸器では、前記被加熱液
体か牛乳や糖分を含む水の場合、金属管自体または鍍金
か施された表面に焦げつきか牛しるという問題かあった
。By the way, in the conventional immersion water heater, when the liquid to be heated is milk or water containing sugar, there is a problem that the metal tube itself or the plated surface gets scorched or scorched.
この問題は、ポリテトラフルオロエチレンのような弗素
樹脂、セラミックス等から成る被覆部か形成された金属
管を用いれば解消る、ことかできる。This problem can be solved by using a metal tube with a coating made of a fluororesin such as polytetrafluoroethylene, ceramics, or the like.
ところて、従来の密閉形発熱体を製造る、ために、前記
電熱線とともに温度ヒユーズを金属管に通し、前記金属
管に電気絶縁材を充填し、前記金属管を）Ｅ延し、前記
金属管に曲げ加工を施した後、前記金属管の表面に鍍金
を施していた。By the way, in order to manufacture a conventional closed-type heating element, a temperature fuse is passed through a metal tube together with the heating wire, the metal tube is filled with an electrical insulating material, the metal tube is After bending the tube, the surface of the metal tube was plated.
前記金属管表面への鍍金による被覆部の形成は前記温度
ヒュースの破壊温度より俄い温度ドにおいて行なうこと
がてきる。しかし、前記弗素樹脂、セラミックス等を被
覆材料とる、被覆部の形成には、前記金属管内の温度ヒ
ユーズの破壊温度を越える高温度ての乾燥処理を必要と
１−る。このため、前記鍍金］１程を前記弗素松１脂、
セラミックス等の焼付１桿て中、に置き換えるときは、
前１己金属管内の温度ヒユーズはその破壊温度以上の熱
のために破壊される。また、このため、前記弗素樹脂、
セラミックス等か焼き付けられた金属管をイｊる、密閉
形発熱体は存在しない。Formation of the coating portion by plating on the surface of the metal tube can be performed at a temperature slightly lower than the breakdown temperature of the thermal fuse. However, in order to form a coating using the coating material such as fluororesin or ceramics, it is necessary to perform a drying process at a high temperature exceeding the breakdown temperature of the temperature fuse in the metal tube. For this reason, the above-mentioned plating] 1 was added to the above-mentioned fluorine pine 1 resin,
When replacing ceramics, etc. with a fired one-piece medium,
The first temperature fuse in a metal tube is destroyed due to heat above its failure temperature. Moreover, for this reason, the fluororesin,
There are no closed heating elements that use ceramic or fired metal tubes.
本発明の目的は、前記弗素樹脂、セラミックス等を焼き
付Ｃｊで成る被覆部を有る、、温度ヒユーズ（ハ）蔵の
金属管を備える密閉形発熱体およびその製造方法を提供
る、ことにある。An object of the present invention is to provide a closed type heating element including a metal tube containing a temperature fuse, which has a coating made of Cj baked with fluororesin, ceramics, etc., and a method for manufacturing the same. .
（課題を解決る、ための手段、発明の作用および効果）
本発明に係る投込み湯沸器の密閉形発熱体は、金属管と
、前記金属管内に収容されかつ前記金属管と電気的に絶
縁された電熱線と、前記電熱線に接続された温度ヒユー
ズとを含み、前記金属管がその表面に前記温度ビューズ
の破壊温度より高況度で焼き付けられた被覆部を有る、
本発明によれば、被加熱液体、例えば牛乳の加熱のため
にこれに前記密閉形発熱体を沈めるとき、被覆部に焦げ
付きは生しない。また、前記金属管が過度に加熱される
とき、内蔵のＺ温度ヒユーズの破断または溶断によって
前記金属管の爆発、焼損等は防止される。(Means for Solving the Problems, Actions and Effects of the Invention) A closed heating element for an immersion water heater according to the present invention includes a metal tube, and a metal tube that is housed in the metal tube and that is electrically connected to the metal tube. According to the present invention, the metal tube includes an insulated heating wire and a temperature fuse connected to the heating wire, and the metal tube has a coating portion baked on its surface at a temperature higher than the breakdown temperature of the temperature beam. For example, when the closed heating element is submerged in a liquid to be heated, such as milk, the coating does not burn. Moreover, when the metal tube is excessively heated, the built-in Z temperature fuse is ruptured or melted, thereby preventing the metal tube from exploding or burning out.
本発明に係る投込み湯沸器の密閉形発熱体の製造方法は
、金属管に電熱線を通すこと、前記金属管の一端部に空
間を残して前記金属管内に粉末状の電気絶縁材を充填る
、こと、前記金属管を圧延る、こと、前記金属管に曲げ
加工を施すこと、前記金属管の表面に高温焼付被覆処理
を施すこと、前記電熱線の一端部に７品度ヒユーズを接
続る、こと、前記温度ヒユーズを前記金属管の一端部の
空間に挿入しかつ前記温度ヒユーズの周りを電気絶縁材
て覆うことを含む。The manufacturing method of a closed type heating element for an immersion water heater according to the present invention includes passing a heating wire through a metal tube, leaving a space at one end of the metal tube, and inserting a powdered electrical insulating material into the metal tube. filling the metal tube, rolling the metal tube, bending the metal tube, applying a high-temperature baking coating to the surface of the metal tube, and attaching a 7-grade fuse to one end of the heating wire. connecting the temperature fuse, including inserting the temperature fuse into a space at one end of the metal tube and surrounding the temperature fuse with an electrically insulating material.
本発明によれば、前記金属管の表面への高温焼付被？’
ｆｆ ＩＡ理を施した後、前、記金属管内に温度ヒユー
ズを配置る、。このことがら、前記温度ヒユーズは前記
高温焼付被覆処理時に生じる前記温度ヒユーズの破壊温
度を越える高温にさらされることはない。したがって、
前記温度ヒユーズが組み込まれかつ前記温度ヒユーズの
破壊温度より高温度での焼付によって前記金属管の表面
に形成された被覆部を有る、密閉形発熱体を得ることが
できる。According to the present invention, the surface of the metal tube is coated with high temperature baking. '
ff After IA treatment, a temperature fuse is placed inside the metal tube. For this reason, the temperature fuse is not exposed to high temperatures exceeding the breakdown temperature of the temperature fuse, which occurs during the high temperature baking coating process. therefore,
It is possible to obtain a closed heating element in which the temperature fuse is incorporated and has a coating formed on the surface of the metal tube by baking at a temperature higher than the breakdown temperature of the temperature fuse.
前記空間は、前記金属管の内部に該金属管の端部の開口
から間隔おいて弾性体からなる仕切り部材を配置る、こ
とにより確保る、ことかできる。The space can be secured by arranging a partition member made of an elastic body inside the metal tube at a distance from the opening at the end of the metal tube.
前記電熱線の一端部に前記空間を経て前記金属管の一端
部の開口から突出る、銅製の撚線を予め１＆続しておく
ことかてき、これによれば、前記金属管の外部で前記撚
線を介して前記電熱線の一端部に前記塩度ヒユーズを容
易に接続る、ことかできる。A stranded copper wire may be connected in advance to one end of the heating wire and protruding from the opening of one end of the metal tube through the space, and according to this, the The salinity fuse can be easily connected to one end of the heating wire via twisted wires.
また、前記温度ヒユーズの周りを覆う電気絶縁材をカラ
ス管または酸化マグネシウム製の管とる、ことかできる
。Further, the electrical insulating material surrounding the temperature fuse may be a glass tube or a tube made of magnesium oxide.
（実胞例）
第１図を参照る、と、本発明に係る密閉形発熱体（以下
、単に「発熱体」と称る、。〉１０を有る、投込み湯沸
器１２が示されている。(Example of Actual Cell) Referring to FIG. 1, an immersion water heater 12 having a closed heating element (hereinafter simply referred to as "heating element") 10 according to the present invention is shown. There is.
発熱体１０には例えばプラスデック製の柄１４が固定さ
れ、発熱体１０は柄１４の内部を通るコード１６の一端
部に接続され、また、コート１６の他端部には差込みプ
ラク（図示せず）が接続されている。前記差込みプラク
をコンセントに差込み、柄１４を持って発熱体１０の一
部を水、牛乳等（被加熱液体）に枕めまたは浸すことに
より、前記被加熱液体を加熱る、ことができる。A handle 14 made of, for example, Plus Deck is fixed to the heating element 10, and the heating element 10 is connected to one end of a cord 16 passing inside the handle 14, and the other end of the coat 16 is connected to an insertion plaque (not shown). ) is connected. The liquid to be heated can be heated by inserting the plug into an outlet, holding the handle 14, and soaking or immersing a part of the heating element 10 in water, milk, etc. (liquid to be heated).
発熱体１０は、前記被加熱液体中に沈められる主要な発
熱部をなす螺線状の湾曲部とこれに連なる平行な両端部
を有る、例えば銅製の金属管１８と、金属管１８内に収
容されかつ金属管１８と電気的に絶縁された、電熱線２
０および該電熱線に接続された例えば１３０度の破壊温
度を有る、温度ヒユーズ２２とを含む。The heating element 10 is housed in a metal tube 18 made of copper, for example, and having a spiral curved portion that is a main heating portion that is submerged in the liquid to be heated, and both ends that are parallel to the spiral curved portion and are connected to the spiral curved portion and both ends that are parallel to the spiral curved portion that is submerged in the liquid to be heated. The heating wire 2 is electrically insulated from the metal tube 18.
0 and a temperature fuse 22 connected to the heating wire, having a breakdown temperature of, for example, 130 degrees.
金属管１８Ｑその表向に温度ヒユーズ２２の破壊温度よ
り高温度で焼付けられた被覆部（図示せず）を有る、。The metal tube 18Q has a coating portion (not shown) baked at a temperature higher than the breakdown temperature of the temperature fuse 22 on its surface.
前記被覆部は金属管の全表面、あるいは表面の一部、例
えば金属管１８の両端部の表面を除く残りの表面を覆う
ものとる、ことができる。前記被覆部を構成る、物質の
例としてポリテトラフルオロエチレンのような弗素相開
、セラミックス等の塗料があり、これらの塗料を用いた
焼イ１被覆処理には３００〜４００度の乾燥温度を必要
とる、。前記被覆部には、加熱のために牛乳、糖分を有
１−ろ水等に接しても焦（＝１きは生じない。The covering portion may cover the entire surface of the metal tube or a portion of the surface, for example, the remaining surface of the metal tube 18 except for the surfaces at both ends. Examples of materials constituting the coating part include paints such as fluorine phase openers such as polytetrafluoroethylene and ceramics, and the baking process using these paints requires a drying temperature of 300 to 400 degrees. I need it. Even if the coating part contains milk, sugar, etc. for heating, it will not burn even if it comes into contact with filtered water.
第２［′Ａを参照る、と、電熱線２０は金属１ｉ’ｉ
１８内に充填された酸化マグネシウム（ＭｇＯ）の粉末
２４を電気絶縁材としてこれに取り囲まれている。また
、温度ヒユーズ２２は、金属管１８の端部１８ａに挿入
されたガラス管２６を電気絶縁材としてこれに取り囲ま
れている。ガラス管２６に代えて、例えば、酸化マグネ
シウム製の管、ゴム管等を用いることができる。Referring to the second ['A, the heating wire 20 is a metal 1i'i
It is surrounded by magnesium oxide (MgO) powder 24 filled in 18 as an electrical insulating material. Further, the temperature fuse 22 is surrounded by a glass tube 26 inserted into the end 18a of the metal tube 18 as an electrically insulating material. Instead of the glass tube 26, for example, a tube made of magnesium oxide, a rubber tube, etc. can be used.
電熱線２０は金属管の一端部１８ａの開口から空間２８
を隔てた箇所と金属管の他端部１８ｂとの間の空間内に
あり、また、温度ヒユーズ２２は空間２８内にある。同
空間はゴムのような弾性体から成る仕切り部材３０て什
切られ、金属管の両端部１８ａ、１８ｂには各開口から
ゴムのような弾性体から成る栓３２．３４が圧入されて
いる。The heating wire 20 extends from the opening of one end 18a of the metal tube to the space 28.
The temperature fuse 22 is located within the space 28 between the space 28 and the other end 18b of the metal tube. The space is divided by a partition member 30 made of an elastic material such as rubber, and plugs 32 and 34 made of an elastic material such as rubber are press-fitted from each opening into both ends 18a and 18b of the metal tube.
電熱線２０の一端部２０ａは仕切り部材３０を貰通る、
端子ピン３６の一端部に接続されており、また、空間２
８を伸びる端子ピン３６の他端は銅製の撚線３８を介し
て温度ヒユーズ２２のリート線に接続されている。温度
ヒ：Ｌ−ズ２２は、栓３２を経て空間２８の内部から外
部に伸びる端ｒ−ピン４０に接続されている。電熱線の
他端部２０ｂも、また、栓３４を経て金属管１８の内外
に伸びる端子ピン４２に接続されている。One end 20a of the heating wire 20 passes through the partition member 30,
It is connected to one end of the terminal pin 36, and is also connected to the space 2.
The other end of the terminal pin 36 extending from 8 is connected to the wire of the temperature fuse 22 via a stranded copper wire 38. The temperature fuse 22 is connected to an end r-pin 40 extending from the interior of the space 28 to the exterior via a plug 32. The other end portion 20b of the heating wire is also connected to a terminal pin 42 extending into and out of the metal tube 18 via the plug 34.
両端子ビン４０．４２は圧着スリーブ４４４６を介して
コート１６（第１図）に接続されている。？Ｗ度ヒユー
ズ２２は、金属管１８か発る、熱によって加熱される空
間２８内の空気の温度が前記破壊温度を越えると溶断し
て、電熱線２０への通電を阻止し、これにより、金属管
１８の過加熱またはその継続に伴なう金属管１８の爆発
や焼損が防出される。Both terminal pins 40,42 are connected to coat 16 (FIG. 1) via crimp sleeves 4446. ? The W degree fuse 22 melts when the temperature of the air in the space 28 heated by the heat emitted from the metal tube 18 exceeds the breakdown temperature, thereby preventing the electricity from flowing to the heating wire 20. Explosion or burnout of the metal tube 18 due to overheating of the tube 18 or its continuation is prevented.
発熱体１０の製造のために、まず、真直に伸 ０
びる金属管１８に電熱線２０を通す。電熱線２０を金属
管１０に通ずに先立ち、電熱線の一端部２０ａには端子
ピン３６および撚線３８が順次に接続されており、端子
ピン３６は仕切り部材３０に通されている。また、電熱
線の他端部２０ｂには端子ピン４２が接続されている。To manufacture the heating element 10, first, the heating wire 20 is passed through the metal tube 18 that extends straight. Prior to passing the heating wire 20 through the metal tube 10, a terminal pin 36 and a stranded wire 38 are sequentially connected to one end 20a of the heating wire, and the terminal pin 36 is passed through the partition member 30. Further, a terminal pin 42 is connected to the other end portion 20b of the heating wire.
これらの端子ピン３６、撚線３８および両端子ピン４０
，４２は、実質的に電熱線２０の一部をな＝ｌ−ｏ撚線
３８の先端からと端子ピン４２の先端までの長さは、後
記圧延により伸長された金属管１８の長さ寸法より大き
い長さ寸法に設定される。These terminal pins 36, stranded wires 38 and both terminal pins 40
, 42 substantially constitute a part of the heating wire 20. The length from the tip of the lo stranded wire 38 to the tip of the terminal pin 42 is the length dimension of the metal tube 18 stretched by rolling, which will be described later. set to a larger length dimension.
上下にした真直な金属管の一端部１８ａから金属管１８
内に端子ピン４２を挿入し、また、什切り部材３０を一
端部１８ａから圧入し、端部１８ａの開りから所定の箇
所まで移動させる。その結果、金属管の他端部１８ｂか
ら端子ピン４２が突出る、。撚線３８は、この後に金属
管１８の上下を逆にしたときに空間２８を伸びかつ金属
管の一端部１８ａから突出る、ようにその１
長さ寸法を設定る、。仕切り部材３０か前記所定の箇所
に確実に保持されるように、金属管１８に仕切り部材３
０の周面に食い込むへこみ（図示せず）を設けることが
望ましい。Metal tube 18 from one end 18a of the straight metal tube held up and down
The terminal pin 42 is inserted inside, and the cutout member 30 is press-fitted from one end 18a, and moved from the opening of the end 18a to a predetermined position. As a result, the terminal pin 42 protrudes from the other end 18b of the metal tube. The length of the stranded wire 38 is set so that when the metal tube 18 is subsequently turned upside down, it extends through the space 28 and protrudes from one end 18a of the metal tube. The partition member 3 is attached to the metal tube 18 so that the partition member 30 is securely held at the predetermined location.
It is desirable to provide a recess (not shown) that bites into the circumferential surface of the 0.
次に、金属管の他端部１８ｂから電気絶縁材２４を供給
して、空間２８を除く金属管１８の内部を電気絶縁材２
４で充填る、。次いで、栓部材４２を金属管の他端部ｔ
ａｂに圧入る、。これにより、金属管１８内を電気絶縁
材２４て満たした状態を維持る、ことかてきる。Next, an electrical insulating material 24 is supplied from the other end 18b of the metal tube to cover the inside of the metal tube 18 excluding the space 28.
Fill with 4. Next, the plug member 42 is attached to the other end t of the metal tube.
Press into ab. This makes it possible to maintain the state in which the inside of the metal tube 18 is filled with the electrical insulating material 24.
その後、金属管１８をバー延る、。これにより、金属管
１８の内径および外径か減り、粉末状の電気絶縁材２４
は圧密され、電熱線２０は金属管１８に対して電気的に
絶縁される。Thereafter, the metal tube 18 is extended. As a result, the inner and outer diameters of the metal tube 18 are reduced, and the powdered electrical insulating material 24 is reduced.
is consolidated and the heating wire 20 is electrically insulated with respect to the metal tube 18.
次いて、螺線状の湾曲部を形成すぺく、金属管１８の両
端部間の中間部に曲げ加工を施す。Next, a bending process is performed on the intermediate portion between both ends of the metal tube 18 to form a spiral curved portion.
前記ＩＴｏげ加工は、例えば、金属管１８を円柱状の治
具の周りに１周半回転させて行なうことができる。The IT scraping process can be performed, for example, by rotating the metal tube 18 one and a half times around a cylindrical jig.
曲げ加工が施された金属管１８の表面の全部に ２
前記弗素樹脂、セラミックス等から成る塗料を塗り、こ
れを高温度（約３００〜４００度）て乾燥させる焼付被
覆処理を施す。これにより、金属管１８の全表面に前記
焦げ付きを生しさせない被覆部が形成される。前記被覆
部は、金属管１８の両端部の表面を除く残りの表面に形
成る、こともできる。The entire surface of the bent metal tube 18 is coated with a paint made of fluororesin, ceramics, etc., and then dried at a high temperature (approximately 300 to 400 degrees Celsius) to perform a baking coating treatment. As a result, the entire surface of the metal tube 18 is coated with a coating that does not cause burning. The coating portion can also be formed on the remaining surface of the metal tube 18 except for the surfaces at both ends.
前記焼付被覆処理の完了後、金属管の一端部１８ａから
突出る、撚線３８に金属管１８の外部で温度ヒユーズ２
２を接続る、。これにより、温度ヒユーズ２２が電熱線
１８の一端部に接続される。撚線３８への温度ヒユーズ
２２の接続に先立ちまたは接続後、ガラスクロス製のス
リーブから成る電気絶縁材２６をこれが撚線３８を取り
巻くように空間２８に挿入る、。その後、栓３２に通さ
れた端子ピン４０が接続された温度ヒユーズ２２を空間
２８に挿入る、。このとき、撚線３８は温度ヒユーズ２
２と仕切部材３０との間でしぐざぐに簡単に折れ曲がる
ため、温度ヒユーズ２２の空間２８内への挿入を容易に
行 ３
なうことがてきる。空間２８内に挿入された温度ヒユー
ズ２２は電気絶縁材２６によってその周囲が覆われる。After the baking coating process is completed, a temperature fuse 2 is connected to the stranded wire 38 protruding from one end 18a of the metal tube outside the metal tube 18.
Connect 2. This connects the temperature fuse 22 to one end of the heating wire 18 . Prior to or after connection of the thermal fuse 22 to the strands 38, an electrical insulation material 26 consisting of a glass cloth sleeve is inserted into the space 28 so that it surrounds the strands 38. Thereafter, the temperature fuse 22 to which the terminal pin 40 passed through the plug 32 is connected is inserted into the space 28. At this time, the stranded wire 38 is connected to the temperature fuse 2.
2 and the partition member 30, the temperature fuse 22 can be easily inserted into the space 28. The temperature fuse 22 inserted into the space 28 is surrounded by an electrically insulating material 26 .
温度ヒユーズ２２の前記焼付被覆処理後における金属管
１８内への配置により、ｎ「記焼付被覆処理時の高温に
よる温度ヒユーズ２２の破壊が回避される。By arranging the temperature fuse 22 within the metal tube 18 after the baking coating process, destruction of the temperature fuse 22 due to the high temperature during the baking coating process is avoided.
前記カラスクロス製のスリーブに代えて、酸化マグネシ
ウムを筒状に固めて成るスリーブ、ガラス製のスリーブ
等を用いることができる。また、前記スリーブ内に酸化
マグネシウム粉末をさらに充填してもよい。Instead of the crow cloth sleeve, a sleeve made of magnesium oxide solidified into a cylindrical shape, a glass sleeve, or the like may be used. Further, magnesium oxide powder may be further filled into the sleeve.
その後、金属管の一端部１８ａに栓部材３２を圧入る、
。これにより、金属管１８の一端部１８ａが栓をされる
とともに、管状の電気絶縁材２６の一端が仕切り部材３
０に押し付けられかつその他端か栓をされる。After that, the plug member 32 is press-fitted into the one end portion 18a of the metal tube.
. As a result, one end 18a of the metal tube 18 is plugged, and one end of the tubular electrical insulating material 26 is connected to the partition member 3.
0 and the other end is plugged.
このようにして形成された発熱体１０の金属管１８の両
端部から伸びる面接続ビン４０．４２は、圧着スリーブ
４４．４６を介してコート１６に接続され、金属管１８
の両端部の一部分、接 ４
続ビン４０．４２の一部、および圧着スリーブ４４．４
６をプラスチック材料で覆い、柄１４を形成る、ことに
より、投込み湯沸器１２の製造が完了１−る。Surface connection pins 40.42 extending from both ends of the metal tube 18 of the heating element 10 thus formed are connected to the coat 16 via crimp sleeves 44.46, and the metal tube 18
4, a portion of the connecting pin 40.42, and a crimp sleeve 44.4.
6 is covered with plastic material and the handle 14 is formed, thereby completing the manufacture of the immersion water heater 12.
第１図は本発明に係る投込み湯沸器の密閉形発熱体の部
分切欠き断面図、第２図は第１図に示す切欠き部の拡大
図である。
１０：密閉形発熱体、
１２・投込み湯沸器、
１８、金属管、
２０、電熱線、
２２ン温度ヒユーズ、
２４：粉末状の電気絶縁材、
２６・筒状の電気絶縁材、
２８：金属管の一端部の空間、
３０：仕切り部材、
３８ 撚線。FIG. 1 is a partially cutaway sectional view of a closed heating element of an immersion water heater according to the present invention, and FIG. 2 is an enlarged view of the notch shown in FIG. 1. 10: Sealed heating element, 12. Immersion water heater, 18. Metal tube, 20. Heating wire, 22 Temperature fuse, 24: Powdered electrical insulating material, 26. Cylindrical electrical insulating material, 28: Space at one end of metal tube, 30: Partition member, 38: Stranded wire.
Claims (6)
管と電気的に絶縁された電熱線と、前記電熱線に接続さ
れた温度ヒューズとを含み、前記金属管がその表面に前
記温度ヒューズの破壊温度より高温度で焼き付けられた
被覆部を有する、投込み湯沸器の密閉形発熱体。(1) A metal tube, a heating wire housed in the metal tube and electrically insulated from the metal tube, and a temperature fuse connected to the heating wire, the metal tube having a surface that A closed heating element for immersion water heaters that has a coating baked at a temperature higher than the breakdown temperature of the fuse.
に空間を残して前記金属管内に粉末状の電気絶縁材を充
填すること、前記金属管を圧延すること、前記金属管に
曲げ加工を施すこと、前記金属管の表面に高温焼付被覆
処理を施すこと、前記電熱線の一端部に温度ヒューズを
接続すること、前記温度ヒューズを前記金属管の一端部
の空間に挿入しかつ前記温度ヒューズの周りを電気絶縁
材で覆うことを含む、投込み湯沸器のための密閉形発熱
体の製造方法。(2) passing a heating wire through a metal tube; filling the metal tube with a powdered electrical insulating material leaving a space at one end; rolling the metal tube; applying a high-temperature baking coating to the surface of the metal tube; connecting a thermal fuse to one end of the heating wire; inserting the thermal fuse into a space at one end of the metal tube; A method of manufacturing a closed heating element for an immersion water heater, comprising surrounding the thermal fuse with an electrically insulating material.
間隔おいて弾性体からなる仕切り部材を配置することに
より前記空間を確保する、請求項（２）に記載の方法。(3) The method according to claim (2), wherein the space is secured by arranging a partition member made of an elastic body inside the metal tube at a distance from the opening at one end of the metal tube.
の一端部の開口から突出する銅製の撚線を予め接続して
おき、前記撚線を介して前記電熱線の一端部に前記温度
ヒューズを接続する、請求項（２）に記載の方法。(4) Connect in advance to one end of the heating wire a stranded copper wire that protrudes from the opening of one end of the metal tube through the space, and connect the one end of the heating wire to the one end of the heating wire via the stranded wire. 3. The method according to claim 2, wherein a thermal fuse is connected.
ーブから成る電気絶縁材で覆う、請求項（２）に記載の
方法。(5) The method according to claim (2), wherein the thermal fuse is covered with an electrically insulating material consisting of a sleeve made of glass cloth.
スリーブから成る電気絶縁材で覆う、請求項（２）に記
載の方法。(6) The method according to claim (2), wherein the thermal fuse is covered with an electrically insulating material consisting of a sleeve made of magnesium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31340389A JPH03176990A (en) | 1989-12-04 | 1989-12-04 | Immersion heater type sheathed heater and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31340389A JPH03176990A (en) | 1989-12-04 | 1989-12-04 | Immersion heater type sheathed heater and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03176990A true JPH03176990A (en) | 1991-07-31 |
Family
ID=18040853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31340389A Pending JPH03176990A (en) | 1989-12-04 | 1989-12-04 | Immersion heater type sheathed heater and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03176990A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373096C (en) * | 2003-06-11 | 2008-03-05 | 金斗年 | Method and device of inserting a coated electric heating wire into a hot water tube and a sealing apparatus thereof |
| JP2011253691A (en) * | 2010-06-02 | 2011-12-15 | Sukegawa Electric Co Ltd | Lead wire connection terminal of sheath heater |
| JP2013012360A (en) * | 2011-06-28 | 2013-01-17 | Nippon Denka Koki Kk | Electric heater and heater terminal connector |
| JP2018153190A (en) * | 2014-05-21 | 2018-10-04 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Electrically heated aerosol-generating system with end heater |
-
1989
- 1989-12-04 JP JP31340389A patent/JPH03176990A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373096C (en) * | 2003-06-11 | 2008-03-05 | 金斗年 | Method and device of inserting a coated electric heating wire into a hot water tube and a sealing apparatus thereof |
| JP2011253691A (en) * | 2010-06-02 | 2011-12-15 | Sukegawa Electric Co Ltd | Lead wire connection terminal of sheath heater |
| JP2013012360A (en) * | 2011-06-28 | 2013-01-17 | Nippon Denka Koki Kk | Electric heater and heater terminal connector |
| JP2018153190A (en) * | 2014-05-21 | 2018-10-04 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Electrically heated aerosol-generating system with end heater |
| JP2018157822A (en) * | 2014-05-21 | 2018-10-11 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Electrically heated aerosol-generating system with end heater |
| US11930566B2 (en) | 2014-05-21 | 2024-03-12 | Philip Morris Products S.A. | Electrically heated aerosol-generating system with end heater |
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