JPH11273832A - Sheet-shaped heater - Google Patents
Sheet-shaped heaterInfo
- Publication number
- JPH11273832A JPH11273832A JP6985198A JP6985198A JPH11273832A JP H11273832 A JPH11273832 A JP H11273832A JP 6985198 A JP6985198 A JP 6985198A JP 6985198 A JP6985198 A JP 6985198A JP H11273832 A JPH11273832 A JP H11273832A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- short
- circuit
- heating
- heater
- 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.)
- Granted
Links
Landscapes
- Surface Heating Bodies (AREA)
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は電気カーペット、電
気毛布、電気パネルヒータ等の面状採暖具に係わり、特
に発熱線および短絡線の巻線構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar heating device such as an electric carpet, an electric blanket, and an electric panel heater, and more particularly to a winding structure of a heating wire and a short-circuit wire.
【0002】[0002]
【従来の技術】従来の電気カーペット等の面状採暖具は
図2、図4(A)、図5、図6および図7に示すよう
に、通電により発熱する発熱体22を内蔵した本体21
と、その発熱体22への通電量を制御して本体21の温
度を制御する制御回路や安全保護装置等を含めた制御部
23とからなり、制御部23には給電用のプラグ24が
接続してある。前記発熱体22は、ポリエステル繊維等
からなる巻き芯25の周囲に発熱線26を螺旋状に捲回
し、その上からナイロン等からなる感熱層27を被覆
し、この上に短絡線28を螺旋状に捲回し、その上から
塩化ビニール等からなる外被絶縁層29を被覆した構成
となっている。2. Description of the Related Art As shown in FIGS. 2, 4A, 5, 6 and 7, a conventional planar heating device such as an electric carpet has a body 21 having a built-in heating element 22 which generates heat when energized.
And a control unit 23 including a control circuit for controlling the temperature of the main body 21 by controlling the amount of electricity supplied to the heating element 22 and a safety protection device. The control unit 23 has a power supply plug 24 connected thereto. I have. The heating element 22 spirally winds a heating wire 26 around a winding core 25 made of polyester fiber or the like, coats a heat-sensitive layer 27 made of nylon or the like thereon, and forms a short-circuit wire 28 on the heat-sensitive layer 27. And a cover insulating layer 29 made of vinyl chloride or the like is coated thereon.
【0003】前記発熱体22を表生地と裏生地間に挟持
し蛇行状に配設し、発熱線26の一端を電源スイッチ3
0とリレー接点31とを直列に配して電源24a に接続
し、他端を電流ヒューズ32と温度ヒューズ33とを直
列に配して電源24a に接続され、発熱体22は通電によ
り発熱する。前記発熱線26が異常過熱した時、発熱線
26を被覆する感熱層27のインピーダンスが小さくな
り(又は溶け)、発熱線26と短絡線28との間に短絡
電流が流れる結果、短絡線28に接続された発熱抵抗が
発熱して温度過昇防止回路を介して、温度ヒューズ33
を溶断させ電源回路を切れるようにしている。The heating element 22 is sandwiched between a front cloth and a back cloth and arranged in a meandering manner, and one end of a heating wire 26 is connected to a power switch 3.
0 and the relay contact 31 are connected in series to the power supply 24a, the other end is connected to the power supply 24a by connecting the current fuse 32 and the temperature fuse 33 in series, and the heating element 22 generates heat when energized. When the heating wire 26 is abnormally overheated, the impedance of the heat-sensitive layer 27 covering the heating wire 26 becomes small (or melts), and a short-circuit current flows between the heating wire 26 and the short-circuit wire 28. The connected heating resistor generates heat and passes through the temperature overheating prevention circuit, and the temperature fuse 33
To cut off the power supply circuit.
【0004】図6に示すように、前記発熱線26に流れ
る電流Iaと、前記短絡線28に流れる電流Ibを互いに逆
方向(逆位相)になるように流し、磁界の発生を抑えた
ものがある。しかしながら、発熱線26の電流の流れは
じめのa点の抵抗は小さく電圧が高く、電流の流れ終わ
るb点は電圧降下し電圧が低くなっている。一方短絡線
28の電流の流れはじめのc点は電圧が高く、電流の流
れ終わるd点は電圧が低くなっている。このため、図4
(A)に示すように、a−d間およびb−c間の電位差
Vaが大きくなり、発熱線26と短絡線28とが短絡した
場合、瞬間的に大電流が流れ、放電音やアークによる類
焼の恐れが生じるという問題があった。As shown in FIG. 6, a current Ia flowing through the heating wire 26 and a current Ib flowing through the short-circuit wire 28 flow in opposite directions (opposite phases) to suppress generation of a magnetic field. is there. However, the resistance at the point a at the beginning of the current flow of the heating wire 26 is small and the voltage is high, and at the point b where the current ends, the voltage drops and the voltage decreases. On the other hand, the voltage at point c at the beginning of the current flow of the short-circuit line 28 is high, and the voltage at point d at which the current ends is low. For this reason, FIG.
As shown in (A), the potential difference between ad and bc
When Va becomes large and the heating wire 26 and the short-circuit wire 28 are short-circuited, a large current flows instantaneously, and there is a problem that a discharge sound or a burning by an arc may occur.
【0005】[0005]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、発熱線および短絡線をそれぞれ2
つに分割し、商用電源に対し直列接続されると共に、互
いに流れる電流方向が逆方向となるよう並列接続し、発
熱線と短絡線間の電位差を小さくし、短絡時の放電音や
アークによる類焼を防止することのできる面状採暖具を
提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has two heating wires and two short-circuit wires.
And connected in series to the commercial power supply, and connected in parallel so that the current flowing directions are opposite to each other, to reduce the potential difference between the heating wire and the short-circuit line, It is an object of the present invention to provide a planar warming device capable of preventing the occurrence of a fire.
【0006】[0006]
【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、巻き芯に捲回した発熱線
と、同発熱線との間に感熱層を介在させ同軸上に螺旋状
に捲回された短絡線とからなり、商用電源に接続され通
電により発熱する発熱体を、表生地と裏生地間に挟持
し、蛇行状に配設してなる面状採暖具において、前記発
熱線および短絡線をそれぞれ2つに分割し、発熱線また
は短絡線の一方が両中間点同志で接続され、他方が両外
端同志で接続され、それぞれ前記商用電源に対し直列接
続されると共に、前記発熱線と短絡線を互いに流れる電
流方向が逆方向となるよう並列接続する構成となってい
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a heat-sensitive layer interposed between a heating wire wound around a winding core and the heating wire to form a coaxial cable. A heating element composed of a helically wound short-circuit wire, connected to a commercial power supply and generating heat by energization, is sandwiched between a front fabric and a back fabric, and is arranged in a meandering shape in a planar heating device. The heating wire and the short-circuit wire are each divided into two, and one of the heating wire and the short-circuit wire is connected at both intermediate points, the other is connected at both outer ends, and each is connected in series to the commercial power supply. At the same time, they are connected in parallel so that the directions of the currents flowing through the heating wire and the short-circuit wire are opposite to each other.
【0007】また、前記2つに分割された発熱線および
短絡線はそれぞれ対をなし長さが等しく形成された構成
となっている。[0007] Further, the heat-generating wire and the short-circuit wire divided into two are formed in pairs, and are formed to have the same length.
【0008】また、前記発熱線はそれぞれ両端間の抵抗
値が等しくなるよう2つに分割した構成となっている。
また、前記短絡線はそれぞれ両端間の抵抗値が等しくな
るよう2つに分割した構成となっている。The heating wire is divided into two parts so that the resistance value between both ends is equal.
Further, the short-circuit line is divided into two such that the resistance value between both ends is equal.
【0009】また、前記2つに分割された発熱線および
短絡線の各線端部の相対向するそれぞれの線間の電位差
がほぼ同等となる構成となっている。In addition, the potential difference between the opposite ends of each of the two ends of the heating wire and the short-circuit wire is substantially equal.
【0010】[0010]
【発明の実施の形態】以下、図面に基づいて本発明によ
る面状採暖具の実施の形態を説明する。図1は本発明に
よる電気カーペット等面状採暖具の外観概略図で、図2
は本発明の発熱体の拡大構造図で、図3は本発明による
要部回路図である。図において、面状採暖具の基本的な
構成は、通電により発熱する発熱体2を内蔵した本体1
と、その発熱体2への通電量を制御して本体1の温度を
制御する制御回路や安全保護装置等を含めた制御部3と
からなっている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a planar warming device according to the present invention. FIG. 1 is a schematic external view of a planar warming device such as an electric carpet according to the present invention.
FIG. 3 is an enlarged structural view of a heating element according to the present invention, and FIG. 3 is a main part circuit diagram according to the present invention. In the figure, the basic configuration of the planar heating device is a
And a control unit 3 including a control circuit for controlling the temperature of the main body 1 by controlling the amount of electricity supplied to the heating element 2 and a safety protection device.
【0011】本体1には繊維布からなる表生地と裏生地
の間に発熱体2を蛇行状に配設してあり、発熱体2の端
末部分は電気的に制御部3にまとめて接続されており、
制御部3には給電用のプラグ4が接続してある。In the main body 1, a heating element 2 is arranged in a meandering manner between a front cloth and a back cloth made of fiber cloth, and a terminal portion of the heating element 2 is electrically connected to a control section 3 collectively. And
A power supply plug 4 is connected to the control unit 3.
【0012】前記発熱体2は、ポリエステル繊維等の絶
縁材からなる巻き芯5に螺旋状に捲回された発熱線6
と、同発熱線6ナイロン等からなる感熱層7で被覆し、
この同軸上に短絡線8を螺旋状に捲回し、その上から塩
化ビニール等からなる外被絶縁層9を被覆した構成とな
っている。The heating element 2 includes a heating wire 6 spirally wound around a winding core 5 made of an insulating material such as polyester fiber.
And the heating wire 6 covered with a heat-sensitive layer 7 made of nylon or the like,
A short-circuit wire 8 is spirally wound on the same axis, and a jacket insulating layer 9 made of vinyl chloride or the like is coated thereon.
【0013】前記発熱線6は両端の抵抗値がほぼ等しい
2つの発熱線6a,6b に分割され、発熱線6aの一端a点を
電源スイッチ10とリレー接点11とを直列に配して電
源4aに接続し、発熱線6aの他端と発熱線6bの一端をe点
で直列に接続し、発熱線6bの他端b点を電流ヒューズ1
2と温度ヒューズ13とを直列に配して電源4aに接続
することにより、発熱体2は通電により発熱する。The heating wire 6 is divided into two heating wires 6a and 6b having substantially equal resistance values at both ends. One end a of the heating wire 6a is connected to a power switch 10 and a relay contact 11 in series to form a power supply 4a. The other end of the heating wire 6a and one end of the heating wire 6b are connected in series at point e, and the other end b of the heating wire 6b is connected to the current fuse 1
2 and the thermal fuse 13 are connected in series and connected to the power supply 4a, so that the heating element 2 generates heat when energized.
【0014】前記短絡線8は両端の抵抗値がほぼ等しい
2つの短絡線8a,8b に分割され、短絡線8aの中間側の一
端c点を電源スイッチ10とリレー接点11とを直列に配し
て電源4aに接続し、短絡線8aの他端f点と短絡線8bの一
端g点を直列に接続し、短絡線8bの中間側の他端d点を
電流ヒューズ12と温度ヒューズ13とを直列に配して電源
4aに接続し、前記発熱線6に流れる電流Iaと前記短絡
線8に流れる電流Ibは互いに逆方向(逆位相)とし、磁
界を打ち消すように構成されている。The short-circuit line 8 is divided into two short-circuit lines 8a and 8b having substantially equal resistance values at both ends, and a power switch 10 and a relay contact 11 are arranged in series at a point c at the middle side of the short-circuit line 8a. To the power supply 4a, connect the other end f of the short-circuit line 8a and the one end g of the short-circuit line 8b in series, and connect the other end d of the middle side of the short-circuit line 8b to the current fuse 12 and the temperature fuse 13. The current Ia flowing through the heating wire 6 and the current Ib flowing through the short-circuit line 8 are arranged in series and connected to the power supply 4a in opposite directions (opposite phases) to cancel the magnetic field.
【0015】前記発熱線6が異常過熱や衝撃を受けた
時、発熱線6を被覆する前記感熱層7のインピーダンス
が小さくなり(又は溶け)、発熱線6と前記短絡線8と
の間に短絡電流が流れる結果、短絡線8に接続された発
熱抵抗が発熱して図示してない温度過昇防止回路を介し
て、温度ヒューズ13を溶断させ電源回路が切られる。When the heating wire 6 is subjected to abnormal overheating or impact, the impedance of the heat-sensitive layer 7 covering the heating wire 6 decreases (or melts), and a short circuit occurs between the heating wire 6 and the short-circuit wire 8. As a result of the flow of the current, the heating resistor connected to the short-circuit line 8 generates heat, so that the temperature fuse 13 is blown through an overheating prevention circuit (not shown) to cut off the power supply circuit.
【0016】前記発熱線6aと短絡線8a、および発熱線6b
と短絡線8bは同軸上に互いに対をなして捲回され、これ
らの線の各ポイントの電圧関係を図4(B)に示す。発
熱線6の電流の流れはじめのa点の抵抗は小さく電圧が
高く、c点およびb点にいくほど電圧が降下しb点が最
も電圧が低くなっている。一方短絡線8は電流の流れは
じめの中間側のc点の電圧が高く、f点(g点も同じ)
からd点にいくほど電圧が降下しd点が最も電圧が低く
なっている。The heating wire 6a, the short-circuit wire 8a, and the heating wire 6b
And the short-circuit line 8b are wound coaxially in pairs with each other, and the voltage relationship at each point of these lines is shown in FIG. 4 (B). The resistance at the point a at the beginning of the current flow of the heating wire 6 is small and the voltage is high, and the voltage decreases as it goes to the points c and b, and the voltage is the lowest at the point b. On the other hand, the short-circuit line 8 has a high voltage at the point c on the intermediate side where the current starts to flow, and the point f (the same applies to the point g).
The voltage decreases from point d to point d, and the voltage is lowest at point d.
【0017】この結果、前記発熱線6と短絡線8の各ポ
イントの線間即ち、a−f間、e−c間、e−d間およ
びb−g間の電位差Vbはほぼ同等となり、図4(A)に
示す従来の発熱線と短絡線の両端間の電位差Vaの約半部
と小さくなっている。上記構成のように、発熱線6およ
び短絡線8をそれぞれ6a,6b および8a,8b の2つに分割
し、商用電源4aに対し直列接続されると共に、互いに流
れる電流位相が逆位相となるよう発熱線6および短絡線
8を並列接続し、各ポイントの線間の電位差を小さくす
ることにより、発熱線6が異常過熱や衝撃を受け、短絡
した時の放電音やアークによる類焼を防止することので
きる面状採暖具となる。As a result, the potential differences Vb between the points of the heating wire 6 and the short-circuit line 8, that is, a-f, ec, ed, and b-g become substantially equal. The potential difference Va between both ends of the conventional heating wire and the short-circuit wire shown in FIG. As in the above configuration, the heating wire 6 and the short-circuit wire 8 are divided into two, 6a, 6b and 8a, 8b, respectively, so that they are connected in series to the commercial power supply 4a and the phases of currents flowing therethrough are opposite to each other. The heating wire 6 and the short-circuit wire 8 are connected in parallel to reduce the potential difference between the wires at each point, thereby preventing the heating wire 6 from being overheated or shocked, thereby preventing a discharge sound or short-circuit caused by an arc when a short circuit occurs. It becomes a surface heating device that can be used.
【0018】[0018]
【発明の効果】以上に説明したように、本発明によれ
ば、上記構成のように、発熱線および短絡線をそれぞれ
2つに分割し、商用電源に対し直列接続されると共に、
互いに流れる電流位相が逆位相となるよう発熱線および
短絡線を並列接続し、各ポイントの線間の電位差を小さ
くすることにより、発熱線6が異常過熱や衝撃を受け、
短絡した時の放電音やアークによる類焼を防止すること
のできる面状採暖具となる。As described above, according to the present invention, as described above, the heating wire and the short-circuit wire are each divided into two and connected in series to the commercial power supply.
The heating wire 6 and the short-circuit wire are connected in parallel so that the current phases flowing to each other are opposite to each other, and the potential difference between the wires at each point is reduced, so that the heating wire 6 receives abnormal overheating or impact,
This is a planar heater that can prevent discharge noise and short-circuiting due to arcing when a short circuit occurs.
【図1】本発明における面状採暖具の外観概略図であ
る。FIG. 1 is a schematic external view of a planar heating device according to the present invention.
【図2】本発明による発熱体の拡大構造図である。FIG. 2 is an enlarged structural view of a heating element according to the present invention.
【図3】本発明による要部回路図である。FIG. 3 is a main part circuit diagram according to the present invention.
【図4】本発明および従来例による発熱線と短絡線の電
圧関係を表す図で、(A)は従来例で、(B)は本発明
による実施例である。4A and 4B are diagrams showing a voltage relationship between a heating wire and a short-circuit line according to the present invention and a conventional example, wherein FIG. 4A is a conventional example and FIG.
【図5】従来例における面状採暖具の外観概略図であ
る。FIG. 5 is a schematic external view of a conventional planar heating device.
【図6】従来例における発熱体の拡大構造図である。FIG. 6 is an enlarged structural view of a heating element in a conventional example.
【図7】従来例における要部回路図である。FIG. 7 is a main part circuit diagram in a conventional example.
1 本体 2 発熱体 3 制御部 4 プラグ 5 巻き芯 6 発熱線 7 感熱層 8 短絡線 9 外被絶縁層 10 電源スイッチ 11 リレー接点 12 電流ヒユーズ 13 温度ヒユーズ DESCRIPTION OF SYMBOLS 1 Main body 2 Heating element 3 Control part 4 Plug 5 Core 6 Heating wire 7 Heat-sensitive layer 8 Short-circuit wire 9 Outer insulation layer 10 Power switch 11 Relay contact 12 Current fuse 13 Temperature fuse
Claims (5)
の間に感熱層を介在させた同軸上に螺旋状に捲回された
短絡線とからなり、商用電源に接続され通電により発熱
する発熱体を、表生地と裏生地間に挟持し、蛇行状に配
設してなる面状採暖具において、 前記発熱線および短絡線をそれぞれ2つに分割し、発熱
線または短絡線の一方が両中間点同志で接続され、他方
が両外端同志で接続され、それぞれ前記商用電源に対し
直列接続されると共に、前記発熱線と短絡線を互いに流
れる電流方向が逆方向となるよう並列接続してなること
を特徴とする面状採暖具。1. A heating wire wound around a winding core, and a short-circuit wire wound spirally coaxially with a heat-sensitive layer interposed between the heating wire, and connected to a commercial power supply and energized. A heating element that generates heat by sandwiching the heating element between the front cloth and the back cloth and disposing the heating element and the short-circuit line in two. One is connected at both intermediate points, the other is connected at both outer ends, and each is connected in series to the commercial power supply, and the directions of currents flowing through the heating wire and the short-circuit wire are opposite to each other. A planar heating device characterized by being connected in parallel.
線はそれぞれ対をなし長さが等しく形成されてなること
を特徴とする請求項1記載の面状採暖具。2. The planar heating device according to claim 1, wherein the heat-generating wire and the short-circuit wire divided into two are formed in pairs and have equal lengths.
等しくなるよう2つに分割されてなることを特徴とする
請求項1または請求項2記載の面状採暖具。3. The planar heating device according to claim 1, wherein the heating wire is divided into two so that the resistance value between both ends is equal.
等しくなるよう2つに分割されてなることを特徴とする
請求項1または請求項2記載の面状採暖具。4. The planar heater according to claim 1, wherein the short-circuit line is divided into two so that the resistance value between both ends is equal.
線の各線端部の相対向するそれぞれの線間の電位差がほ
ぼ同等となることを特徴とする請求項1記載の面状採暖
具。5. The planar heater according to claim 1, wherein the potential difference between the two ends of the heat-generating wire and the short-circuit wire, which are opposed to each other, is substantially equal. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06985198A JP3772519B2 (en) | 1998-03-19 | 1998-03-19 | Surface heating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06985198A JP3772519B2 (en) | 1998-03-19 | 1998-03-19 | Surface heating device |
Publications (2)
Publication Number | Publication Date |
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JPH11273832A true JPH11273832A (en) | 1999-10-08 |
JP3772519B2 JP3772519B2 (en) | 2006-05-10 |
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Application Number | Title | Priority Date | Filing Date |
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JP06985198A Expired - Fee Related JP3772519B2 (en) | 1998-03-19 | 1998-03-19 | Surface heating device |
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JP (1) | JP3772519B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007183036A (en) * | 2006-01-06 | 2007-07-19 | Fujitsu General Ltd | Planar electric heater |
-
1998
- 1998-03-19 JP JP06985198A patent/JP3772519B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007183036A (en) * | 2006-01-06 | 2007-07-19 | Fujitsu General Ltd | Planar electric heater |
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Publication number | Publication date |
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JP3772519B2 (en) | 2006-05-10 |
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