JPH0112794Y2 - - Google Patents
Info
- Publication number
- JPH0112794Y2 JPH0112794Y2 JP1982094846U JP9484682U JPH0112794Y2 JP H0112794 Y2 JPH0112794 Y2 JP H0112794Y2 JP 1982094846 U JP1982094846 U JP 1982094846U JP 9484682 U JP9484682 U JP 9484682U JP H0112794 Y2 JPH0112794 Y2 JP H0112794Y2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- groove
- sheathed
- protrusion
- caulking
- 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 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Resistance Heating (AREA)
- Electric Stoves And Ranges (AREA)
Description
【考案の詳細な説明】
この考案は電気加熱器のヒータの取付構造の改
良に関する。[Detailed Description of the Invention] This invention relates to an improvement in the heater mounting structure of an electric heater.
従来、たとえば電気天ぷらなべにおけるヒータ
の取付構造の１つとして、第１図に示すように、
金属製の容器１の底面に、カシメ可能な歯形の突
条２ａ，２ｂを円環状に設けて、この突条２ａ，
２ｂで囲まれる溝４内にシーズヒータ３を装入し
て、該突条２ａ，２ｂの先端を内向にカシメるこ
とにより、ヒータ３を固定するものが知られてい
る。 Conventionally, one of the mounting structures for a heater in an electric deep fryer, for example, is as shown in Fig. 1.
Tooth-shaped protrusions 2a, 2b that can be caulked are provided in an annular shape on the bottom of the metal container 1, and these protrusions 2a,
It is known that the sheathed heater 3 is inserted into the groove 4 surrounded by the groove 2b, and the heater 3 is fixed by caulking the tips of the protrusions 2a and 2b inward.
しかし、従来のこの種のヒータの取付構造にお
いては、溝４の底面（ヒータとの接触面）はヒー
タのシーズ外形と相似な半円形状であり、かつ、
その底面はヒータの敷設経路に沿つて一様に構成
され、ヒータをカシメて固定した後はヒータは上
記底面にシーズのほぼ全長に亘つて一様に接触し
ていた。このため、加熱時におけるヒータの膨張
によつて、溝内でヒータに不要な応力が加わり、
ヒータが断線しやすいという欠点があつた。１つ
の試験結果によれば、通常のカシメのもとで、78
時間ないし218時間内で断線が生じる。 However, in the conventional mounting structure of this type of heater, the bottom surface of the groove 4 (the contact surface with the heater) has a semicircular shape similar to the outer shape of the heater sheath, and
The bottom surface was configured uniformly along the heater installation route, and after the heater was caulked and fixed, the heater was in uniform contact with the bottom surface over almost the entire length of the sheath. For this reason, unnecessary stress is applied to the heater within the groove due to the expansion of the heater during heating.
The drawback was that the heater was easily disconnected. According to one test result, under normal caulking, 78
Disconnection occurs within 218 hours.
この考案は上述の従来の欠点を除くためになさ
れたものであつて、ヒータが収納される溝の内周
面に部分的にさらに別の溝を形成して、加熱時に
おけるヒータの膨張による応力を上記別設の溝で
吸収することにより、容器へのヒータからの熱伝
導を低下することなく、ヒータの長寿命化の可能
な電気加熱器のヒータ取付装置を提供することを
目的とするものである。 This idea was made in order to eliminate the above-mentioned drawbacks of the conventional method, and it is possible to partially form another groove on the inner peripheral surface of the groove in which the heater is housed, thereby reducing the stress caused by the expansion of the heater during heating. The purpose of the present invention is to provide a heater mounting device for an electric heater that can extend the life of the heater without reducing the heat conduction from the heater to the container by absorbing the above-mentioned separately provided groove. It is.
以下にこの考案の一実施例を図面とともに説明
する。各図において、第１図に示したものと同じ
部分には同一の符号を付した。 An embodiment of this invention will be described below with reference to the drawings. In each figure, the same parts as shown in FIG. 1 are given the same reference numerals.
電気天ぷらなべの容器１の底面には円環状に、
シーズヒータ３がカシメ用の歯形の突条２ａ，２
ｂに囲まれた溝４内に嵌入され固定されている。 There is a circular ring on the bottom of the electric tempura pot container 1.
The sheathed heater 3 has tooth-shaped protrusions 2a, 2 for caulking.
It is fitted and fixed in the groove 4 surrounded by b.
上記溝４内の内周面には、シーズヒータを横切
る方向に複数条の浅い切欠溝６が形成されてい
る。 A plurality of shallow notch grooves 6 are formed in the inner circumferential surface of the groove 4 in a direction transverse to the sheathed heater.
一例においては、全長約400mm、直径８mmφの
0.8KWヒータを固定した場合において、幅３mm、
深さ３mmの切欠溝６を、円周方向に45゜間隔で形
成した。そして上記突条２ａ，２ｂを200Kg／cm2
でカシメてヒータ３を固定した場合、ヒータの寿
命は200時間ないし1350時間に延長することがで
きた。このようにヒータの寿命を延長できる１つ
の理由は、ヒータの膨張時にそのシーズの一部が
第６図に示すように、膨張した部分が切欠溝６内
に吸収され、内部応力の発生を吸収するためと考
えられる。 In one example, the total length is approximately 400mm and the diameter is 8mmφ.
When the 0.8KW heater is fixed, the width is 3mm,
Notch grooves 6 with a depth of 3 mm were formed at intervals of 45° in the circumferential direction. And the above protrusions 2a and 2b are 200Kg/cm 2
When heater 3 was fixed by caulking, the lifespan of the heater could be extended to 200 to 1350 hours. One of the reasons why the lifespan of the heater can be extended in this way is that when the heater expands, a portion of the seeds are absorbed into the notched groove 6 as shown in Figure 6, absorbing the internal stress generated. This is thought to be for the purpose of
上述の実施例は切欠溝６をヒータ３の長手方向
に対して直角な方向に設けたが、第７図に示すよ
うに斜の方向に切欠溝６を形成してもよいし、さ
らに１点さ線で示すように溝４の長手方向に連続
する細い切欠溝６′を設けてもよい。 In the above-mentioned embodiment, the notch groove 6 is provided in a direction perpendicular to the longitudinal direction of the heater 3, but the notch groove 6 may be formed in an oblique direction as shown in FIG. As shown by the dotted line, a narrow notched groove 6' may be provided that continues in the longitudinal direction of the groove 4.
なおいずれの実施例においても切欠溝６のない
部分では、ヒータ３の外周は溝４の内周面と密着
しており、ヒータ３から容器１への良好な熱伝導
を保つている。 In any of the embodiments, the outer periphery of the heater 3 is in close contact with the inner periphery of the groove 4 in the portion without the notched groove 6, maintaining good heat conduction from the heater 3 to the container 1.
またヒータのカシメ方法としては、溝４にヒー
タ３を装着してから、ヒータ３のシーズをたとえ
ば100Kg／cm2で溝４の横方向に垂直にプレスし、
その後突条２ａ，２ｂを200Kg／cm2の力でプレス
する第１の方法、ヒータ３を溝４内に装入してか
ら、先ず突条２ａ，２ｂを200Kg／cm2でプレスし、
次いでヒータ３を100Kg／cm2で溝４の底方向にプ
レスし、さらに突条２ａ，２ｂを70Kg／cm2でプレ
スする第２の方法等がある。 The method for caulking the heater is to install the heater 3 in the groove 4, press the sheath of the heater 3 at 100 kg/cm 2 perpendicularly to the lateral direction of the groove 4,
After that, the first method is to press the protrusions 2a and 2b with a force of 200 kg/cm 2. After inserting the heater 3 into the groove 4, first press the protrusions 2a and 2b with a force of 200 kg/cm 2 .
Next, there is a second method in which the heater 3 is pressed at 100 kg/cm 2 toward the bottom of the groove 4, and the protrusions 2a and 2b are further pressed at 70 kg/cm 2 .
第１の方法によれば、ヒータの寿命は平均約
500時間（最大1350時間）に延長し、第２の方法
によれば寿命は415時間に延長することができた。 According to the first method, the average lifespan of the heater is approximately
500 hours (maximum 1350 hours), and according to the second method, the lifespan could be extended to 415 hours.
以上詳述したように、この考案は、カシメによ
つてシーズヒータを容器に装着するようにした加
熱器において、シーズヒータの取付面に、部分的
に溝を設けて、シーズヒータの膨張を吸収し、シ
ーズヒータ内での応力の発生を緩和するようにし
たから、簡単な構造でシーズヒータ寿命を延長す
ることが可能となり、またシーズヒータの容器へ
の伝熱特性を低下することはない。 As described in detail above, this invention is a heater in which the sheathed heater is attached to a container by caulking, and a groove is partially provided on the mounting surface of the sheathed heater to absorb the expansion of the sheathed heater. However, since the generation of stress within the sheathed heater is alleviated, it is possible to extend the life of the sheathed heater with a simple structure, and the heat transfer characteristics of the sheathed heater to the container are not deteriorated.
なお、この考案は上述の実施例に限らず、種々
の電気加熱機におけるシーズヒータの取付構造に
適用されるものである。 Note that this invention is applicable not only to the above-mentioned embodiments but also to mounting structures of sheathed heaters in various electric heating machines.
第１図はこの考案に用いられる電気天ぷらなべ
の一例を示す断面図、第２図は第１図の電気天ぷ
らなべの一部破断底面図、第３図はこの考案の一
実施例の要部を示す底面図、第４図は第３図の要
部を示す断面図、第５図は第３図のＡ視図、第６
図はヒータの変形状態を示す図、第７図はこの考
案の他の実施例を示す底面図である。
１…容器、２ａ，２ｂ…突条、３…シーズヒー
タ、４…溝、６…切欠溝。
Fig. 1 is a sectional view showing an example of an electric tempura frying pan used in this invention, Fig. 2 is a partially cutaway bottom view of the electric tempura frying pan in Fig. 1, and Fig. 3 is a main part of an embodiment of this invention. FIG. 4 is a sectional view showing the main parts of FIG. 3, FIG. 5 is a view from A in FIG. 3, and FIG.
The figure shows a deformed state of the heater, and FIG. 7 is a bottom view showing another embodiment of this invention. DESCRIPTION OF SYMBOLS 1... Container, 2a, 2b... Protrusion, 3... Sheathed heater, 4... Groove, 6... Notch groove.
Claims (1)
つてカシメ用の突条を設けるとともに、該突条に
よつて包囲される溝内にシーズヒータを装入し
て、上記突条をカシメて、シーズヒータを固定す
るようにした電気加熱器のヒータ取付装置におい
て、上記溝の底面に部分的にシーズヒータ外周と
非接触となる別の溝を設けたことを特徴とする電
気加熱器のヒータ取付装置。 A protrusion for caulking is provided on the bottom of the heating container along the installation path of the sheathed heater, and the sheathed heater is inserted into the groove surrounded by the protrusion, and the protrusion is caulked to seal the sheath. A heater mounting device for an electric heater for fixing a heater, characterized in that another groove is provided on the bottom surface of the groove partially not in contact with the outer periphery of the sheathed heater. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9484682U JPS59293U (en) | 1982-06-24 | 1982-06-24 | Heater mounting device for electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9484682U JPS59293U (en) | 1982-06-24 | 1982-06-24 | Heater mounting device for electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59293U JPS59293U (en) | 1984-01-05 |
| JPH0112794Y2 true JPH0112794Y2 (en) | 1989-04-13 |
Family
ID=30226810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9484682U Granted JPS59293U (en) | 1982-06-24 | 1982-06-24 | Heater mounting device for electric heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59293U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5334055B2 (en) * | 1972-10-06 | 1978-09-19 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615757Y2 (en) * | 1976-08-31 | 1981-04-13 | ||
| JPS5361842U (en) * | 1976-10-28 | 1978-05-25 |
-
1982
- 1982-06-24 JP JP9484682U patent/JPS59293U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5334055B2 (en) * | 1972-10-06 | 1978-09-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59293U (en) | 1984-01-05 |
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