JPH11329679A - Flat electric warmer - Google Patents
Flat electric warmerInfo
- Publication number
- JPH11329679A JPH11329679A JP13543798A JP13543798A JPH11329679A JP H11329679 A JPH11329679 A JP H11329679A JP 13543798 A JP13543798 A JP 13543798A JP 13543798 A JP13543798 A JP 13543798A JP H11329679 A JPH11329679 A JP H11329679A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- heating
- temperature
- wire
- voltage
- 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
- Surface Heating Bodies (AREA)
- Central Heating Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、電気毛布などの面
状電気採暖具の発熱面を複数に分割し、且つ金属抵抗線
からなる感熱線を使用して発熱面の温度を制御する面状
電気採暖具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 electric heating device, such as an electric blanket, which divides a heating surface into a plurality of portions and controls the temperature of the heating surface by using a heat-sensitive wire made of a metal resistance wire. It is related to electric heating equipment.
【０００２】[0002]
【従来の技術】例えば電気毛布は、発熱線の配置間隔を
胸側より足側を密に配置し、比較的冷えやすい足側の単
位面積当たりの発熱量を多くするなどして、快適な採暖
ができるようにすることが従来から行われている。2. Description of the Related Art For example, in an electric blanket, heating wires are arranged more densely on the foot side than on the chest side so as to increase the amount of heat generated per unit area on the foot side, which is relatively easy to cool, so as to provide comfortable heating. Conventionally, it has been made possible to do this.
【０００３】[0003]
【発明が解決しようとする課題】ところで電気毛布の使
用中に、例えば明け方など、胸側は十分暖まっているが
足元を暖めたいと思うなど、部分的に採暖したい場合が
ある。本発明は、上記問題に着目してなされたものであ
り、電気毛布などの面状電気採暖具の発熱面を複数に分
割し、それぞれに発熱線を配置し、部分的発熱を可能に
し、且つ温度検出を金属抵抗線によって行うようにした
面状電気採暖具を提供することを目的としている。By the way, during the use of the electric blanket, there is a case where the chest side is sufficiently warmed, for example, at dawn, but the user wants to warm the feet, so that the user may want to partially heat the blanket. The present invention has been made in view of the above problems, and divides a heating surface of a planar electric heating device such as an electric blanket into a plurality of parts, arranges heating lines in each of the heating surfaces, enables partial heating, and It is an object of the present invention to provide a planar electric warming device in which temperature detection is performed by a metal resistance wire.
【０００４】[0004]
【課題を解決するための手段】以上の目的を達成するた
めの本発明の面状電気採暖具は、電気毛布などの面状発
熱体及び温度制御回路とからなり、前記発熱体の発熱面
を、それぞれ発熱線と感熱線とからなる導電線を配置し
た複数の区画に分割し、前記感熱線に金属抵抗線を使用
し、前記温度制御回路に、前記区画のうち発熱させる区
画を選択する第１切換スイッチと、制御温度設定回路
と、発熱面の温度検出回路とを設け、前記制御温度設定
回路は、抵抗の分圧位置を可変にした可変分圧回路と、
該可変分圧回路に並列接続する補償抵抗と直列接続する
補償抵抗と、これらの補償抵抗の前記可変分圧回路への
接続・非接続を切り換える第２切換スイッチとからな
り、該第２切換スイッチを前記第１切換スイッチと連動
させ、前記温度検出回路は、前記複数の感熱線と前記制
御温度設定回路とを直列に接続し、発熱させる区画の選
択に関係なく発熱面温度と前記可変分圧回路の分圧位置
とが対応するように前記補償抵抗の抵抗値を決定し、発
熱面温度が設定温度に一致すると出力電圧が一定電圧と
なるようにしたものである。According to a first aspect of the present invention, there is provided a planar electric heating device comprising a planar heating element such as an electric blanket and a temperature control circuit. Divided into a plurality of sections in which conductive lines each composed of a heating wire and a heat-sensitive wire are arranged, a metal resistance wire is used as the heat-sensitive wire, and the temperature control circuit selects a section to generate heat among the sections. 1 switch, a control temperature setting circuit, and a temperature detection circuit for a heating surface, wherein the control temperature setting circuit includes a variable voltage dividing circuit that varies a voltage dividing position of a resistor;
A compensation resistor connected in series with the variable voltage dividing circuit, a compensation resistor connected in series with the variable voltage dividing circuit, and a second changeover switch for switching connection / non-connection of the compensation resistor to the variable voltage dividing circuit. In conjunction with the first changeover switch, the temperature detection circuit connects the plurality of heat-sensitive wires and the control temperature setting circuit in series, and regardless of the selection of a section to generate heat, the heating surface temperature and the variable partial pressure The resistance value of the compensation resistor is determined so as to correspond to the voltage dividing position of the circuit, and the output voltage becomes a constant voltage when the heating surface temperature matches the set temperature.
【０００５】前記感熱線に使用する金属抵抗線には特に
限定はないが、例えばニッケル、マンガン−ニッケル合
金などを使用することができる。前記分圧器の分圧位置
からの出力電圧によって発熱線の温度を制御する手段に
は特に限定はないが、例えば前記温度制御回路に、基準
電圧を発生する基準電圧発生回路と、該基準電圧発生回
路から出力される基準電圧と、前記可変分圧器の分圧位
置から出力される出力電圧とを比較する比較回路と、前
記出力電圧を基準電圧に一致させるように前記発熱線へ
の通電を制御する電力制御器を備えた通電制御回路とを
設けることによって温度制御を行わせることができる。[0005] The metal resistance wire used for the heat-sensitive wire is not particularly limited. For example, nickel, manganese-nickel alloy, or the like can be used. Means for controlling the temperature of the heating wire based on the output voltage from the voltage dividing position of the voltage divider is not particularly limited. For example, a reference voltage generating circuit for generating a reference voltage in the temperature control circuit; A comparison circuit that compares a reference voltage output from a circuit with an output voltage output from a voltage dividing position of the variable voltage divider; and controls energization of the heating wire so that the output voltage matches the reference voltage. The temperature control can be performed by providing a power supply control circuit including a power controller.
【０００６】前記通電制御回路に使用する通電制御器に
は特に限定はないが、リレー、サイリスタなど、各種の
制御器又は素子を使用することができる。前記第１切換
スイッチを、前記区画の全ての発熱線を直列に接続可能
に形成することにより、前記全区画に通電する際の消費
電力を節約し、採暖しながら、比較的大きな消費電力の
電気器具を使用することができる。There is no particular limitation on the energization controller used in the energization control circuit, but various controllers or elements such as relays and thyristors can be used. By forming the first change-over switch so that all the heating wires of the section can be connected in series, power consumption when energizing all the sections is reduced, and the electricity of relatively large power consumption is saved while heating. Instruments can be used.
【０００７】[0007]
【発明の実施の形態】以下添付の図面を参照し、電気毛
布によって実施した一実施の形態により本発明を具体的
に説明する。使用した電気毛布の面状発熱体１は、図１
に示すように、表地及び裏地の２層からなる毛布２（図
は裏生地のみ示す）の足元側区画Ｆに導電線３-Fを、ま
た胸元側区画Ｂに導電線３-Bを、それぞれ配置し、それ
ぞれの端部を毛布２に取り付けたコネクター４に接続し
たものである。なお図１に示す符合５は、コントローラ
（図示せず）に接続するケーブルである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the accompanying drawings by way of an embodiment implemented using an electric blanket. The heating element 1 of the electric blanket used is shown in FIG.
As shown in the figure, a conductive wire 3- F is placed on the foot section F of the blanket 2 (only the back cloth is shown in the figure) and a conductive wire 3- B is placed on the chest section B of the blanket 2 composed of two layers of outer and lining. It is arranged and each end is connected to a connector 4 attached to a blanket 2. Reference numeral 5 shown in FIG. 1 is a cable connected to a controller (not shown).
【０００８】前記導電線３-F（又は３-B）は、可撓性樹
脂芯（図示せず）の上に発熱線H1（又はH2）を巻き付
け、その上に例えばナイロンなどのポリアミド樹脂、そ
の他融点又は軟化点を有する樹脂層Ｒ（図２）で被覆
し、その上に例えばニッケルからなる感熱線S1（及びS
2）を巻き付け、表面を可撓性絶縁樹脂（図示せず）で
被覆したものである。The conductive wire 3 -F (or 3- B ) is formed by winding a heating wire H1 (or H2) on a flexible resin core (not shown), and a polyamide resin such as nylon, for example. In addition, it is covered with a resin layer R having a melting point or softening point (FIG. 2), and a heat-sensitive wire S1 (and S
2), and the surface is covered with a flexible insulating resin (not shown).
【０００９】前記導電線H1, H2は、図２に示すように、
面状発熱体１全面を温めるときは直列に接続し、足元側
区画Ｆのみ温めるときは導電線H2を切り離し、導電線H1
のみに通電するものであり、その切換は第１切換スイッ
チSW２によって行うようにした。なお、図２に示す示す
符合SW１は電源スイッチである。温度制御回路の直流電
源は、箔ヒューズｆ、抵抗R1、ダイオードD2、抵抗R2，
R3、ツェナーダイオードZD１によって構成し、ダイオー
ドD2及び抵抗R2に接続するノードN1から高圧電源DCＨ
（１３０Ｖ）を取り出し、抵抗R3及びツェナーダイオー
ドZD１に接続するノードN2から低圧電源DCＬ（６．２
Ｖ）を取り出した。As shown in FIG. 2, the conductive lines H1 and H2 are
When the entire surface of the sheet heating element 1 is to be warmed, connect it in series. To heat only the foot section F, disconnect the conductive line H2 and connect the conductive line H1.
Only the power is supplied to the first switch SW2. The symbol SW1 shown in FIG. 2 is a power switch. The DC power supply of the temperature control circuit is foil fuse f, resistor R1, diode D2, resistor R2,
R3, a zener diode ZD1, and a high voltage power supply DCH from a node N1 connected to a diode D2 and a resistor R2.
(130V) and take out the low voltage power supply DCL (6.2) from the node N2 connected to the resistor R3 and the Zener diode ZD1.
V) was removed.
【００１０】面状発熱体１の温度検出回路は、足元側区
画Ｆに配した感熱線S1と胸元側区画Ｂに配した感熱線S2
とを直列に接続し、１本の感熱線Ｓ（以下S1とS2との直
列接続を示すときは符合Ｓを使用する）とし、発熱線H1
（足元側区画Ｆに配置）及び発熱線H2（胸元側区画Ｂに
配置）の温度を前記感熱線Ｓによって検出するようにし
た。The temperature detecting circuit of the sheet heating element 1 comprises a heat sensitive line S1 disposed in the foot section F and a heat sensitive line S2 disposed in the chest section B.
Are connected in series to form one heat-sensitive wire S (hereinafter, the symbol S is used when indicating a series connection of S1 and S2), and a heat-generating wire H1
The temperature of the heating line H2 (disposed in the chest side section B) and the temperature of the heating line H2 (disposed in the chest side section B) are detected by the heat-sensitive line S.
【００１１】そのため感熱線Ｓに、制御温度設定用ボリ
ューム抵抗VR及び分圧値補正抵抗Ｒ 23とを並列に接続し
た可変分圧回路を、直列接続した温度検出回路（以下で
詳細説明する）と、該温度検出回路に、前記第１切換ス
イッチSW２と連動する第２切換スイッチSW３及び補償抵
抗Ｒ25，Ｒ26により形成した暖房面積切換回路を接続す
ることにより、発熱させる区画を、足元側区画Ｆ、又は
発熱体全面FBのいずれにしても、可変分圧回路（実際は
ボリューム抵抗VR）の摺動端子に現れる分圧電圧が、
該摺動端子の分圧位置に割り当てられた設定温度に一
致すると一定電圧となるようにすることができる。以下
にその説明をする。For this reason, the control wire for setting the control temperature is
Resistor VR and partial pressure compensation resistor R twenty threeAnd connected in parallel
A variable voltage divider circuit is connected in series to a temperature detection circuit
The first switching switch is connected to the temperature detection circuit.
The second switch SW3 and the compensation resistor interlocked with the switch SW2.
Anti-Rtwenty five, R26Connect the heating area switching circuit formed by
By doing so, the section to be heated, the foot side section F, or
Regardless of the FB on the entire heating element, the variable voltage dividing circuit (actually,
The divided voltage that appears at the sliding terminal of the volume resistor VR)
The set temperature assigned to the partial pressure position of the sliding terminal
When they match, a constant voltage can be obtained. Less than
The explanation is given below.
【００１２】前記暖房面積切換回路から説明する。発熱
線H1のみ通電する場合（第１切換スイッチSW２及び第２
切換スイッチSW３が図２に示す状態）の感熱線Ｓの抵抗
変化と、発熱線H1，H2の両方に通電する場合（第１切換
スイッチSW２及び第２切換スイッチSW３を白丸端子側に
切り換えた場合）の抵抗変化と、では、発熱面温度が同
じ温度であっても、感熱線Ｓの抵抗変化は、後者、即ち
全面発熱の場合の方が大きくなる。The heating area switching circuit will be described first. When only the heating wire H1 is energized (the first changeover switch SW2 and the second
When the resistance change of the heat sensing wire S and the heating wires H1 and H2 are energized when the changeover switch SW3 is in the state shown in FIG. 2 (when the first changeover switch SW2 and the second changeover switch SW3 are switched to the white circle terminal side) The resistance change of the heat-sensitive wire S is larger in the latter case, that is, in the case of the entire surface heat generation, even if the heating surface temperature is the same.
【００１３】そこで、発熱線H1と発熱線H2とを直列に接
続して全面発熱させる場合の最低設定温度時の抵抗値と
最高設定温度時の抵抗値とを、分圧値補正抵抗Ｒ23とボ
リューム抵抗VRとの並列回路（前記可変分圧回路）によ
って設定した。そして、発熱線H1のみ通電する場合（図
１の状態）には、前記のとおり同じ発熱面温度でも感熱
線Ｓの抵抗変化が減少することの補償を行うため、前記
可変分圧回路と補償抵抗Ｒ25（「低」〜「高」の温度設
定用）とを並列に接続し、これに補償抵抗Ｒ26（「高」
の温度設定用）を直列に接続することにより、可変分圧
回路の全抵抗変化幅に対する見掛け抵抗変化を小さくす
ると共に、補償抵抗Ｒ26によって全体の抵抗値を調整し
た。[0013] Therefore, the resistance value of the resistance value and the time of maximum set temperature at the minimum set temperature when connected to the entire surface heating of the heating wire H1 and the heating cable H2 in series, the partial pressure value correction resistor R 23 It was set by a parallel circuit (variable voltage dividing circuit) with the volume resistor VR. When only the heating wire H1 is energized (the state shown in FIG. 1), the variable voltage dividing circuit and the compensation resistor are used to compensate for the decrease in the resistance change of the heat sensing wire S even at the same heating surface temperature as described above. R 25 (for setting the temperature between “low” and “high”) are connected in parallel, and a compensation resistor R 26 (for “high”
The temperature-setting) of by connecting in series, as well as reduce the apparent resistance change with respect to the total resistance variation of the variable voltage dividing circuit, to adjust the total resistance value by the compensation resistor R 26.
【００１４】即ち、補償抵抗Ｒ25，Ｒ26の抵抗値を調整
することにより、発熱線H1及び発熱線H2の両方に通電す
る全面暖房の場合でも、発熱線H1のみに通電する足元側
区画Ｆのみの暖房の場合でも、ボリューム抵抗RVの摺動
端子に発生する電圧が、発熱している面の温度に依存
して決まるようにすることができる。That is, by adjusting the resistance values of the compensating resistors R 25 and R 26 , even in the case of full heating in which both the heating line H 1 and the heating line H 2 are energized, the foot-side section F which energizes only the heating line H 1 is provided. Even in the case of only heating, the voltage generated at the sliding terminal of the volume resistor RV can be determined depending on the temperature of the heating surface.
【００１５】本実施の形態の温度検出回路は、ボリュー
ム抵抗VRの摺動端子、抵抗Ｒ12、Ｒ13によって構成
し、抵抗Ｒ13とダイオードD6との間のノードに生じた電
圧をコンパレータＵ1Bの反転入力端子６に与える回路に
よって形成した。以上のように温度検出回路を構成する
ことにより、発熱線H1, H2を並列接続した場合でも、同
様に温度検出することができることは明らかである。The temperature detection circuit of this embodiment, the sliding terminal of the volume resistivity VR, constituted by resistors R 12, R 13, the voltage generated at the node between the resistor R 13 and diode D6 of the comparator U1B It was formed by a circuit provided to the inverting input terminal 6. By configuring the temperature detection circuit as described above, it is apparent that the temperature can be similarly detected even when the heating wires H1 and H2 are connected in parallel.
【００１６】前記コンパレータＵ1Bの入力端子５に与え
られる基準電圧は、以下に説明する温度基準信号回路に
よって形成した。即ち、前記高圧電源CDＨを抵抗Ｒ
22と、抵抗Ｒ14及び抵抗HR２と、によって分圧し、更に
コンパレータＵ1A、抵抗Ｒ15、Ｒ 16、Ｒ17、Ｒ18及びコ
ンデンサC9によって、図３に示すとおり、交流電圧の正
サイクルがハイ信号電圧“Ｈ”を、負サイクルがロー信
号電圧“Ｌ”を有する温度設定基準信号Ｖｃを発生する
交流電圧発生回路により構成した。The signal is supplied to the input terminal 5 of the comparator U1B.
The reference voltage is applied to the temperature reference signal circuit described below.
Therefore, it was formed. That is, the high voltage power supply CDH is connected to the resistor R
twenty twoAnd the resistance R14And the resistance HR2,
Comparator U1A, resistor RFifteen, R 16, R17, R18And
As shown in FIG. 3, the positive
Cycle is high signal voltage “H”, negative cycle is low signal
A temperature setting reference signal Vc having a signal voltage "L" is generated.
It consisted of an AC voltage generation circuit.
【００１７】なお図１において、符号HR１はサイリスタ
逆導通時に温度ヒューズTFを溶断する発熱抵抗であり、
HR２は発熱線H1， H2 と感熱線S1，S2とが過熱その他の
原因で短絡した場合に温度ヒューズTF溶断用発熱抵抗で
あり、該発熱抵抗HR２と抵抗R7とは、前記温度検出回路
の一部をなしている。In FIG. 1, reference numeral HR1 denotes a heating resistor that blows the thermal fuse TF when the thyristor is reversely turned on.
HR2 is a heating resistor for fusing the thermal fuse TF when the heating wires H1, H2 and the heat sensing wires S1, S2 are short-circuited due to overheating or other causes. The heating resistor HR2 and the resistor R7 are connected to one of the temperature detection circuits. Part.
【００１８】次に、以上説明した温度制御回路の動作を
以下に説明する。 ＜毛布温度が設定温度より低いとき＞温度信号Ｖｓは、
温度設定基準信号Ｖｃの“Ｈ”と“Ｌ”との間（図３の
破線Ｖｓ）にあり、コンパレータＵ1Bは、前記交流電圧
の正サイクル時にハイ信号電圧“Ｈ”を出力し、抵抗R
9、トランジスタQ1のコレクタ、抵抗R8、コンデンサC
4、ＳＣＲゲート、ＳＣＲカソードの経路でコンデンサC
4に充電電流が流れ、ＳＣＲをオンさせて発熱線H1又はH
1及びH2に通電される。Next, the operation of the above-described temperature control circuit will be described below. <When the blanket temperature is lower than the set temperature> The temperature signal Vs is
Between the "H" and "L" of the temperature setting reference signal Vc (broken line Vs in FIG. 3), the comparator U1B outputs a high signal voltage "H" during the positive cycle of the AC voltage, and
9, the collector of transistor Q1, resistor R8, capacitor C
4. Capacitor C in the path of SCR gate and SCR cathode
4, the charging current flows, turns on the SCR, and generates the heating wire H1 or H
1 and H2 are energized.
【００１９】次に、前記交流電圧の負のサイクル時にロ
ー信号電圧“Ｌ”を出力し、コンデンサC4に充電された
電荷は、抵抗R8、トランジスタQ1、コンパレータＵ1Bの
出力、抵抗R5、の経路で放電される。 ＜毛布温度が設定温度より高いとき＞温度信号Ｖｓは、
温度設定基準信号Ｖｃより高く（Ｖｓ＞Ｖｃ：図３の一
点鎖線Ｖｓ）なっており、コンパレータＵ1Bの出力は、
“Ｌ”となってコンデンサC4に充電電流は流れず、ＳＣ
Ｒはオフする。Next, a low signal voltage "L" is output during the negative cycle of the AC voltage, and the electric charge charged in the capacitor C4 is transferred through a path of the resistor R8, the transistor Q1, the output of the comparator U1B, and the resistor R5. Discharged. <When the blanket temperature is higher than the set temperature> The temperature signal Vs is
It is higher than the temperature setting reference signal Vc (Vs> Vc: the dashed line Vs in FIG. 3), and the output of the comparator U1B is
It becomes “L” and the charging current does not flow through the capacitor C4.
R turns off.
【００２０】周知のとおり金属抵抗線を用いた感熱線Ｓ
の温度に対する抵抗値の変化は極めて精度が高く、しか
も、以上に説明したとおり温度制御回路は、発熱面を複
数に区画し、区画された発熱面全面を発熱させるときは
直列に接続し、温度検出は、複数の区画に跨がって１本
の感熱線を用い、温度補償抵抗により、前記区画を発熱
させる場合でも、また部分的区画を発熱させる場合で
も、常に通電中の発熱面温度が設定温度が以下となる
と、基準電圧より低くなり、ＳＣＲをオンし、基準電圧
より高くなるとオフするようにしたので、全面発熱の際
の消費電力を低減させると共に、金属抵抗線を用いた感
熱線を用いて、発熱させる区画の温度を比較的簡単な回
路構成により制御することができる。As is well known, a heat-sensitive wire S using a metal resistance wire
The change in the resistance value with respect to the temperature is extremely high in accuracy, and as described above, the temperature control circuit divides the heating surface into a plurality of sections, and connects the heating sections in series to generate heat over the entire heating section. Detection is performed using a single heat-sensitive wire over a plurality of sections, and the temperature of the heat-generating surface during energization is always constant even when the sections generate heat or when the partial sections generate heat, using a temperature compensation resistor. When the set temperature is below, the temperature becomes lower than the reference voltage and the SCR is turned on. When the temperature is higher than the reference voltage, the SCR is turned off. , The temperature of the section to be heated can be controlled by a relatively simple circuit configuration.
【００２１】[0021]
【発明の効果】以上説明したように本発明の金属抵抗線
からなる１本の感熱線によって発熱面温度を検出する面
状電気採暖具を構成したので、複数に区画した面状発熱
体のいずれの面を選択的に通電し発熱させた場合でも、
制御温度設定用可変分圧回路の分圧位置を、通電してい
る発熱面温度に対応させることができる。したがって、
温度制御回路を簡単な回路構成とすることができるの
で、製造コストを削減し、しかも故障の少ない面状発熱
体を提供することができる。As described above, the planar electric heating device for detecting the temperature of the heating surface by one heat-sensitive wire composed of the metal resistance wire of the present invention is constituted. Even if the surface of
The voltage dividing position of the variable voltage dividing circuit for setting the control temperature can be made to correspond to the temperature of the heat generating surface that is energized. Therefore,
Since the temperature control circuit can have a simple circuit configuration, it is possible to reduce the manufacturing cost and provide a planar heating element with less failure.
【図１】本発明の一実施の形態による面状電気採暖具の
本体に導電線を配置した様子を示す説明図である。FIG. 1 is an explanatory view showing a state where conductive wires are arranged on a main body of a planar electric warming device according to an embodiment of the present invention.
【図２】図１に示す面状電気採暖具の温度制御回路図で
ある。FIG. 2 is a temperature control circuit diagram of the planar electric warming device shown in FIG.
【図３】図２の温度制御回路に使用する基準電圧の波形
を示すグラフ図である。FIG. 3 is a graph showing a waveform of a reference voltage used in the temperature control circuit of FIG. 2;
１ 面状発熱体 ２ 毛布 ３-B 導電線 ３-F 導電線 Ｂ 胸元側区画 Ｆ 足元側区画 Ｈ１ 発熱線 Ｈ２ 発熱線 Ｓ１ 感熱線 Ｓ２ 感熱線 Ｓ 感熱線（S1とS2とを直列接続した感熱線） Ｒ
樹脂層 SW２ 第１切換スイッチ SW３ 第２切換ス
イッチ Ｒ25 補償抵抗 Ｒ26 補償抵抗 ＶＲ 可変分圧器（ボリューム抵抗） Ｕ1A コンパレータ Ｕ1B コンパレー
タDESCRIPTION OF SYMBOLS 1 Planar heating element 2 Blanket 3- B conductive line 3- F conductive line B Chest side section F Foot side section H1 Heating wire H2 Heating wire S1 Heat sensing wire S2 Heat sensing wire S Heat sensing wire (S1 and S2 are connected in series. Heat ray) R
Resin layer SW2 first changeover switch SW3 second changeover switch R 25 compensation resistor R 26 compensation resistor VR variable divider (volume resistivity) U1A comparator U1B comparator
Claims (3)
回路とからなり、前記発熱体の発熱面を、それぞれ発熱
線と感熱線とからなる導電線を配置した複数の区画に分
割し、前記感熱線に金属抵抗線を使用し、前記温度制御
回路に、前記区画のうち発熱させる区画を選択する第１
切換スイッチと、制御温度設定回路と、発熱面の温度検
出回路とを設け、前記制御温度設定回路は、抵抗の分圧
位置を可変にした可変分圧回路と、該可変分圧回路に並
列接続する補償抵抗と直列接続する補償抵抗と、これら
の補償抵抗の前記可変分圧回路への接続・非接続を切り
換える第２切換スイッチとからなり、該第２切換スイッ
チを前記第１切換スイッチと連動させ、前記温度検出回
路は、前記複数の感熱線と前記制御温度設定回路とを直
列に接続し、発熱させる区画の選択に関係なく発熱面温
度と前記可変分圧回路の分圧位置とが対応するように前
記補償抵抗の抵抗値を決定し、発熱面温度が設定温度に
一致すると出力電圧が一定電圧となるようにしたことを
特徴とする面状電気採暖具。1. A heating device comprising a planar heating element such as an electric blanket and a temperature control circuit, wherein a heating surface of the heating element is divided into a plurality of sections in which conductive wires each comprising a heating wire and a heat-sensitive wire are arranged. A first step of using a metal resistance wire as the heat-sensitive wire, and selecting, in the temperature control circuit, a section to be heated among the sections;
A changeover switch, a control temperature setting circuit, and a heating surface temperature detection circuit, wherein the control temperature setting circuit is connected in parallel to the variable voltage dividing circuit having a variable voltage dividing position of the resistor; And a second switch for switching connection / disconnection of these compensation resistors to / from the variable voltage dividing circuit. The second switch is interlocked with the first switch. The temperature detection circuit connects the plurality of heat-sensitive wires and the control temperature setting circuit in series, and the heating surface temperature corresponds to the voltage dividing position of the variable voltage dividing circuit irrespective of the selection of the section to be heated. Wherein the resistance value of the compensation resistor is determined so that the output voltage becomes a constant voltage when the heating surface temperature matches the set temperature.
と、該基準電圧発生回路から出力される基準電圧と、前
記可変分圧器の分圧位置から出力される出力電圧とを比
較する比較回路と、前記出力電圧を基準電圧に一致させ
るように前記発熱線への通電を制御する電力制御器を備
えた通電制御回路とを前記温度制御回路に設けたことを
特徴とする請求項１記載の面状電気採暖具。2. A reference voltage generation circuit for generating a reference voltage, and a comparison circuit for comparing a reference voltage output from the reference voltage generation circuit with an output voltage output from a voltage dividing position of the variable voltage divider. 2. The temperature control circuit according to claim 1, further comprising: a power supply control circuit including a power controller that controls power supply to the heating wire so that the output voltage matches a reference voltage. Electric heater.
ての発熱線を直列に接続可能に形成したことを特徴とす
る請求項１又は２記載の面状電気採暖具。3. The planar electric warming tool according to claim 1, wherein the first changeover switch is formed so that all heating wires of the section can be connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13543798A JPH11329679A (en) | 1998-05-18 | 1998-05-18 | Flat electric warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13543798A JPH11329679A (en) | 1998-05-18 | 1998-05-18 | Flat electric warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11329679A true JPH11329679A (en) | 1999-11-30 |
Family
ID=15151707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13543798A Pending JPH11329679A (en) | 1998-05-18 | 1998-05-18 | Flat electric warmer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11329679A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267371A (en) * | 2019-07-15 | 2019-09-20 | 北京烯研科技有限公司 | The anti-overheat protecting system of the whole face of two-dimensional electric heating device and a kind of heating equipment |
| CN110505716A (en) * | 2019-09-02 | 2019-11-26 | 余姚卓瑞电子有限公司 | A kind of single line realizes the heat generating device and its processing method of subregion temperature control |
-
1998
- 1998-05-18 JP JP13543798A patent/JPH11329679A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267371A (en) * | 2019-07-15 | 2019-09-20 | 北京烯研科技有限公司 | The anti-overheat protecting system of the whole face of two-dimensional electric heating device and a kind of heating equipment |
| CN110505716A (en) * | 2019-09-02 | 2019-11-26 | 余姚卓瑞电子有限公司 | A kind of single line realizes the heat generating device and its processing method of subregion temperature control |
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