JPS6321722Y2 - - Google Patents
Info
- Publication number
- JPS6321722Y2 JPS6321722Y2 JP1983014944U JP1494483U JPS6321722Y2 JP S6321722 Y2 JPS6321722 Y2 JP S6321722Y2 JP 1983014944 U JP1983014944 U JP 1983014944U JP 1494483 U JP1494483 U JP 1494483U JP S6321722 Y2 JPS6321722 Y2 JP S6321722Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- insulator
- hole
- engine
- 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
- 238000010438 heat treatment Methods 0.000 claims description 36
- 239000012212 insulator Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Surface Heating Bodies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、デイーゼルエンジン等の吸気管に装
着され、エンジンの吸入空気を加熱してエンジン
の始動を補助するために用いられる吸気加熱用電
熱ヒータに関するものである。[Detailed description of the invention] [Industrial application field] The present invention is an electric heating device for heating intake air that is attached to the intake pipe of a diesel engine, etc., and is used to heat the intake air of the engine and assist in starting the engine. It is related to heaters.
従来公知の吸気加熱用電熱ヒータ（実開昭57−
58765）は、第１図のごとく、帯状の金属発熱体
２が金属ボデー１を支持体として磁器絶縁体３を
介して納められていて、該発熱体２の屈曲部２ａ
と絶縁体の凹状の孔底部との接触部は互いに半円
形となつている。また、該接触部は発熱体２の通
電時の熱膨張を見込んで両者の間には若干の隙間
が設けられている。
Conventionally known electric heater for heating intake air (Utility Model No. 57-
58765), as shown in FIG.
The contact portion between the contact portion and the bottom of the concave hole of the insulator is semicircular with respect to each other. Further, in consideration of the thermal expansion of the heating element 2 when energized, a slight gap is provided between the contact portion.
併しながら、上記の発熱体２と絶縁体３との接
触部は、実用状態に於いて振動により互いに衝突
し合うので、発熱体２の屈曲部２ａの先端が次第
に摩耗して遂には断線に至るという問題をかかえ
ていた。
However, since the contact portion between the heating element 2 and the insulator 3 collides with each other due to vibration in practical use, the tip of the bent portion 2a of the heating element 2 gradually wears out and eventually breaks. I was having a problem getting there.
本考案は、ボデイーに取付固定された絶縁体を
有し、該絶縁体に貫通孔を設け、金属発熱体の屈
曲部を絶縁体の貫通孔の内側に直接に挿入した技
術的手段を採用するものである。
The present invention has an insulator attached and fixed to the body, a through hole is provided in the insulator, and the bent part of the metal heating element is directly inserted into the through hole of the insulator. It is something.
本考案においては、金属発熱体の屈曲部が絶縁
体の貫通孔に直接に挿入される構成であるため、
金属発熱体の屈曲部の先端が貫通孔の内側に振動
により衝突することがなく、従来に比べて金属発
熱体の屈曲部の先端摩耗が抑制される。
In the present invention, since the bent part of the metal heating element is directly inserted into the through hole of the insulator,
The tip of the bent portion of the metal heating element does not collide with the inside of the through hole due to vibration, and wear of the tip of the bent portion of the metal heating element is suppressed compared to the conventional case.
また、本考案によれば、熱膨張に際し発熱体の
屈曲部が貫通孔内で伸びるのを妨げられないた
め、熱膨張時の発熱体の曲がり、歪みを回避でき
る。 Furthermore, according to the present invention, the bending portion of the heating element is not prevented from expanding within the through hole during thermal expansion, so bending and distortion of the heating element during thermal expansion can be avoided.
このように、本考案によれば、金属発熱体の屈
曲部先端の摩耗、断線を抑制できるとともに、金
属発熱体の熱膨張時の変形を抑制でき、従つて実
用上の効果は極めて大きい。
As described above, according to the present invention, it is possible to suppress the wear and disconnection of the tip of the bent portion of the metal heating element, and also to suppress the deformation of the metal heating element during thermal expansion, and therefore the practical effect is extremely large.
以下本考案の実施例を図について説明する。第
２図および第３図ａ，ｂに於いて、１はアルミニ
ウム合金より成る金属ボデーで、該ボデー１はそ
の孔１ａを用いて図示しないエンジンの吸気管に
固定される。前記ボデー１の中には、鉄クロム合
金等より成る波形の帯状発熱体２の屈曲部の側面
部２ａおよび先端部２ｂが、磁器絶縁体３の貫通
孔３ａの中に直接に挿入され、該貫通孔３ａの内
面に前記発熱体２の屈曲部の側平面部２ａを接触
させて納められている。尚、前記絶縁体３は、ボ
デー１に対してケイ部３ｂにスプリング４を介し
て固定されていて、前記発熱体２の両端部は、前
記ボデー１の両側で端子５と５′によつて夫々、
電気絶縁されて取付けられている。
Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 2 and 3a and 3b, reference numeral 1 denotes a metal body made of aluminum alloy, and the body 1 is fixed to an intake pipe of an engine (not shown) using its hole 1a. In the body 1, the side surface portion 2a and tip portion 2b of the bent portion of the corrugated band-shaped heating element 2 made of iron-chromium alloy or the like are directly inserted into the through hole 3a of the porcelain insulator 3. The heat generating element 2 is housed in the inner surface of the through hole 3a with the side plane part 2a of the bent part of the heating element 2 in contact with the inner surface of the through hole 3a. The insulator 3 is fixed to the body 1 via a spring 4 to a shell 3b, and both ends of the heating element 2 are connected to terminals 5 and 5' on both sides of the body 1. Respectively,
Installed with electrical insulation.
また、第２図では図面上で下側の絶縁体３につ
いてのみ断面が示してあるが、上側の絶縁体も同
様の断面構造を有している。 Further, in FIG. 2, only the lower insulator 3 is shown in cross section, but the upper insulator also has a similar cross-sectional structure.
次に、本考案に成るエンジンの吸気加熱用電熱
ヒータの作動を説明すると、図示していない電源
より導かれる電線が端子５に接続され、反対側の
端子５′にはアース線が接続されている。予熱に
於いて、電流は端子５より発熱体２を経て反対側
の端子５′からアースへと流れるので、発熱体２
が赤熱する。発熱体２が充分に赤熱した時点で予
熱からクランキングに切替えると、エンジンの回
転により吸入空気が発熱体２に触れて加熱され、
エンジンの燃焼室内に送り込まれるのでエンジン
の始動が容易となる。 Next, to explain the operation of the electric heater for heating intake air of an engine according to the present invention, an electric wire led from a power source (not shown) is connected to terminal 5, and a ground wire is connected to terminal 5' on the opposite side. There is. During preheating, current flows from the terminal 5 through the heating element 2 and from the opposite terminal 5' to ground, so the heating element 2
becomes red hot. When switching from preheating to cranking when the heating element 2 becomes sufficiently red-hot, the intake air comes into contact with the heating element 2 and is heated by the rotation of the engine.
Since it is sent into the combustion chamber of the engine, it becomes easier to start the engine.
ここで本考案の構成に於いては、絶縁体３の貫
通孔３ａの内面に接触している発熱体２の側面部
２ａの部分は、(1)接触隙間が小さく且つ、(2)接触
面が大きく設定されているので、該接触部は実用
状態での振動により衝突する力は小さく、そのた
め従来の構成のもののように発熱体の絶縁体に対
する接触部が振動摩耗して断線に至る事はない。 In the configuration of the present invention, the portion of the side surface 2a of the heating element 2 that is in contact with the inner surface of the through hole 3a of the insulator 3 has (1) a small contact gap and (2) a contact surface. is set to a large value, the force of collision of the contact part due to vibration in practical conditions is small, and therefore the contact part of the heating element to the insulator does not wear out due to vibration and breakage, unlike in conventional configurations. do not have.
更に、通電時に於ける発熱体２の熱膨張による
伸びは、発熱体２の屈曲部が絶縁体３の貫通孔３
ａの中で吸収されるため、従来の構成のもののよ
うに通電で発熱体２の曲りや歪みが生じることは
ない。 Furthermore, the elongation due to thermal expansion of the heating element 2 during energization causes the bent portion of the heating element 2 to close to the through hole 3 of the insulator 3.
Since the heat is absorbed in the heat generating element 2a, the heating element 2 does not bend or distort when energized unlike in conventional configurations.
本実施例では、発熱体２の屈曲部を絶縁体３の
貫通孔３ａの中に挿入し、該貫通孔３ａの内面に
屈曲部の側面部２ａを接触させたが、第４図に示
すごとく補強のために発熱体２の屈曲部の一部
を、更に、金属ボルト６によつてボデー１に対し
電気絶縁して固定しても良く、この場合該ボルト
６は、Ｕ型、Ｌ型、或いはＴ型等の各形状のボル
トが使用出来る。尚、発熱体２の、絶縁体３の貫
通孔３ａに内面に接触する部分に予め耐摩耗性の
物質を被着させて置けば、摩耗を更に抑える事が
出来る。 In this embodiment, the bent portion of the heating element 2 is inserted into the through hole 3a of the insulator 3, and the side surface portion 2a of the bent portion is brought into contact with the inner surface of the through hole 3a. For reinforcement, a part of the bent portion of the heating element 2 may be further fixed to the body 1 with electrical insulation using a metal bolt 6. In this case, the bolt 6 may be U-shaped, L-shaped, Alternatively, bolts of various shapes such as T-shape can be used. Incidentally, if a wear-resistant material is applied in advance to the portion of the heating element 2 that contacts the inner surface of the through hole 3a of the insulator 3, wear can be further suppressed.
第１図は従来例を示す一部破断面図、第２図は
本考案の一実施例を示す一部破断面図、第３図
ａ，ｂは第２図における絶縁体を示すもので、第
３図ａは平面図、第３図ｂは断面図、第４図は本
考案の他の実施例を示す一部破断面図である。
１……ボデー、２……発熱体、３……絶縁体、
３ａ……貫通孔。
FIG. 1 is a partially cutaway sectional view showing a conventional example, FIG. 2 is a partially broken sectional view showing an embodiment of the present invention, and FIGS. 3a and 3b show the insulator in FIG. FIG. 3a is a plan view, FIG. 3b is a sectional view, and FIG. 4 is a partially cutaway sectional view showing another embodiment of the present invention. 1...Body, 2...Heating element, 3...Insulator,
3a...Through hole.
Claims (1)
熱体を裸出せしめ、この発熱体に通電して発熱さ
せ、これにより前記吸気管内の吸気を加熱するエ
ンジンの吸気加熱用電熱ヒータにおいて、前記ボ
デーに取付固定された絶縁体を有し、該絶縁体に
貫通孔を設け、前記発熱体の屈曲部を前記絶縁体
の貫通孔の内側に直接に挿入した構成とする事を
特徴とするエンジン吸気加熱用電熱ヒータ。 In an electric heater for heating intake air of an engine, a metal heating element attached to the body is exposed in the intake pipe of the engine, and the heating element is energized to generate heat, thereby heating the intake air in the intake pipe. An engine intake air heating device comprising a fixed insulator, a through hole provided in the insulator, and a bent portion of the heating element directly inserted into the through hole of the insulator. Electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1494483U JPS59121462U (en) | 1983-02-02 | 1983-02-02 | Electric heater for engine intake air heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1494483U JPS59121462U (en) | 1983-02-02 | 1983-02-02 | Electric heater for engine intake air heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59121462U JPS59121462U (en) | 1984-08-16 |
| JPS6321722Y2 true JPS6321722Y2 (en) | 1988-06-15 |
Family
ID=30146284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1494483U Granted JPS59121462U (en) | 1983-02-02 | 1983-02-02 | Electric heater for engine intake air heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59121462U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219573Y2 (en) * | 1984-09-05 | 1990-05-30 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928661B2 (en) * | 1980-07-19 | 1984-07-14 | 株式会社山東鉄工所 | Atmosphere measurement and adjustment device in high pressure steamer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS587081Y2 (en) * | 1978-05-31 | 1983-02-07 | 株式会社デンソー | Electric heater for heating intake air of internal combustion engine |
| JPS5928661U (en) * | 1982-08-17 | 1984-02-22 | 日吉電装株式会社 | Air heater for starting diesel engine |
| JPS59115851U (en) * | 1983-01-26 | 1984-08-04 | 日産ディーゼル工業株式会社 | Air heater device for internal combustion engine |
-
1983
- 1983-02-02 JP JP1494483U patent/JPS59121462U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928661B2 (en) * | 1980-07-19 | 1984-07-14 | 株式会社山東鉄工所 | Atmosphere measurement and adjustment device in high pressure steamer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59121462U (en) | 1984-08-16 |
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