JP2919562B2 - Heating device heater switching device - Google Patents
Heating device heater switching deviceInfo
- Publication number
- JP2919562B2 JP2919562B2 JP2163280A JP16328090A JP2919562B2 JP 2919562 B2 JP2919562 B2 JP 2919562B2 JP 2163280 A JP2163280 A JP 2163280A JP 16328090 A JP16328090 A JP 16328090A JP 2919562 B2 JP2919562 B2 JP 2919562B2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- voltage
- power supply
- detection circuit
- switch
- 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 - Fee Related
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
- Cleaning And Drying Hair (AREA)
- Cookers (AREA)
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は、例えば電気ポット、ヘアードライヤ等の小
型の加熱器具のヒータ切換装置に関するものである。The present invention relates to a heater switching device for small heating appliances such as electric pots and hair dryers.
（ロ） 従来の技術 一般に電気ポットやヘアードライヤ等の小型の加熱器
具は海外旅行時に携行されることが多くなった。ところ
が、外国においては商用の交流電源電圧が大別して100V
国と200V国とがあり、定格電圧が100V用の器具に200Vを
印加した場合にはヒータが焼損したり火災等の危険が生
ずる。また、反対に定格電圧が200Vの器具に100Vを印加
した場合には定格の発熱量が得られない欠点があった。(B) Conventional technology Generally, small heating appliances such as electric pots and hair dryers are often carried when traveling overseas. However, in foreign countries, commercial AC power supply voltage is roughly divided into 100V
There is a country and a 200V country, and when 200V is applied to a device having a rated voltage of 100V, a danger such as burning of a heater or fire may occur. On the other hand, when 100 V is applied to a device having a rated voltage of 200 V, there is a disadvantage that a rated calorific value cannot be obtained.
このため、供給されている交流電源電圧に応じて使用
者が手動によりスイッチを切換えて２つのヒータを直列
接続したり、或いは並列接続するものが提案されたが、
前述のスイッチの切換操作を忘れたり間違える危険があ
ることから最近では特開平１−251204号に示す様に検出
回路によって交流電源の電圧を検出し自動的に２つのヒ
ータを直列或は並列に切換え接続するものがあるが、前
述の検出回路には200Vの高電圧が印加されるために該検
出回路内の電気部分（制御素子、定電圧素子等）の耐電
圧の高いものを用いる必要があり、この結果、電気部品
が大型化され器具全体の寸法が大きくなって携行に不便
となった。For this reason, there has been proposed a type in which a user manually switches a switch according to a supplied AC power supply voltage to connect two heaters in series or to connect two heaters in parallel.
Because of the danger of forgetting or making a mistake in the switching operation of the above-mentioned switch, recently, as shown in JP-A-1-251204, the detection circuit detects the voltage of the AC power supply and automatically switches the two heaters in series or in parallel. Although there is a connection, a high voltage of 200 V is applied to the above-mentioned detection circuit, so that it is necessary to use a high withstand voltage of the electric parts (control element, constant voltage element, etc.) in the detection circuit. As a result, the size of the electric parts is increased and the size of the entire device is increased, which makes it inconvenient to carry.
（ハ） 発明が解決しようとする課題 本発明は、交流電源電圧を検出する検出回路の小型化
を図り携行に便利な加熱器具となることを目的とする。(C) Problems to be Solved by the Invention It is an object of the present invention to reduce the size of a detection circuit for detecting an AC power supply voltage and to provide a heating device that is convenient to carry.
（ニ） 課題を解決するための手段 本発明は、第１ヒータと、該第１ヒータとほぼ同抵抗
値の第２のヒータと、前記第１及び第２ヒータの各々を
交流電源間に直列或は並列接続する第１及び第２スイッ
チと、前記交流電源の電圧を検出し前記第１及び第２ス
イッチを作動するリレー、定電圧素子、制御素子とから
なる検出回路とを備え、前記検出回路は、前記第１ヒー
タ或は第２ヒータの両端間に接続し交流電源の電圧が所
定電圧以上の時に第１及び第２スイッチを作動して第１
ヒータと第２ヒータを直列接続し、所定電圧以下の時に
第１及び第２スイッチによって第１ヒータと第２ヒータ
を並列接続するものであって、通常は前記第１ヒータと
第２ヒータを並列接続するものである。(D) Means for Solving the Problems According to the present invention, a first heater, a second heater having substantially the same resistance as the first heater, and each of the first and second heaters are connected in series between an AC power supply. Or a first and second switch connected in parallel, and a detection circuit comprising a relay, a constant voltage element, and a control element for detecting the voltage of the AC power supply and operating the first and second switches, The circuit is connected between both ends of the first heater or the second heater and operates the first and second switches when the voltage of the AC power supply is equal to or higher than a predetermined voltage.
A heater and a second heater are connected in series, and when the voltage is lower than a predetermined voltage, the first and second switches are connected in parallel by first and second switches. Usually, the first and second heaters are connected in parallel. Connect.
（ホ） 作用 本発明は、各々がほぼ同抵抗値の第１ヒータ及び第２
ヒータの何れか一方の両端間にリレー、定電圧素子、制
御素子とからなる検出回路を接続して検出回路に印加さ
れる電圧を低くしたため、検出回路内の各電気部品は耐
電圧の低いものを用いることができる。(E) Function The present invention provides a first heater and a second heater each having substantially the same resistance value.
Since a detection circuit consisting of a relay, a constant voltage element, and a control element is connected across either end of the heater to reduce the voltage applied to the detection circuit, each electric component in the detection circuit has a low withstand voltage Can be used.
（ヘ） 実施例 本発明の実施例を図面に基づいて説明する。第１図は
本発明の実施例となる電気鍋の加熱器具を示す断面図で
ある。（１）は器具本体、（２）は上面に開口部（３）
を設けた側板（４）と下面に複数個の通気孔（５）
（５）を穿設した裏板（６）とを有した合成樹脂製のフ
レーム、（７）は前記開口部（３）の上方に固定した遮
熱板、（８）は該遮熱板の上部に固定した第１ヒータ
（９）と該第１ヒータとほぼ同抵抗値の第２ヒータ（1
0）と短絡防止用の保護抵抗（30）（第１図に図示せ
ず、第２図を参照）を有する熱板、（11）は前記板
（６）と遮熱板（７）との間に入れてネジ（12）固定に
より挾持した中空パイプ、（13）は一端を前記遮熱板
（７）に固定したリミッター、（14）は前記フレーム
（２）内に収納固定した降圧抵抗、（15）はフレーム
（２）内に収納固定した電装部である。(F) Example An example of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a heating device for an electric pan according to an embodiment of the present invention. (1) is the instrument body, (2) is an opening on the top surface (3)
Side plate (4) provided with a plurality of ventilation holes (5) on the lower surface
A frame made of a synthetic resin having a back plate (6) with perforated (5), (7) a heat shield fixed above the opening (3), and (8) a heat shield of the heat shield. A first heater (9) fixed to the upper portion and a second heater (1) having substantially the same resistance value as the first heater.
0) and a hot plate having a protection resistor (30) (not shown in FIG. 1; see FIG. 2) for short-circuit prevention, and (11) is a hot plate having the above-mentioned plate (6) and heat shield plate (7). A hollow pipe sandwiched by screws (12) and interposed therebetween; (13) a limiter having one end fixed to the heat shield plate (7); (14) a step-down resistor housed and fixed in the frame (2); (15) is an electrical component housed and fixed in the frame (2).
第２図は電気回路を示すもので以下に説明する。（1
6）は商用の交流電源、（17）は交流電源の供給電圧を
検出する検出回路で、以下の電気部品（18）とからな
る。（19）は後述する第１スイッチ（28）と第２スイッ
チ（29）を作動するリレー、（20）は該リレーに直列接
続した制御素子、（21）は抵抗（22）に直列接続し所定
電圧（約150V）以上で導通する定電圧素子で、この直列
回路を前記リレー（19）と制御素子（20）の直列回路に
並列接続している。（23）は定電圧素子（21）と抵抗
（22）との接続部と制御素子（20）のゲートとの間に接
続した導通素子、（24）は前記降圧抵抗（14）と制御素
子（20）に直列接続したダイオード、（25）は前記制御
素子（20）の導通時に点灯する高電圧供給表示用のラン
プ、（26）は前記制御素子（20）の保護用の抵抗、（2
7）は安定化用のコンデンサである。FIG. 2 shows an electric circuit, which will be described below. (1
6) is a commercial AC power supply, and (17) is a detection circuit for detecting a supply voltage of the AC power supply, and includes the following electric components (18). (19) is a relay for operating a first switch (28) and a second switch (29) to be described later, (20) is a control element connected in series to the relay, and (21) is connected in series to a resistor (22) and A constant voltage element that conducts at a voltage (about 150 V) or more, and this series circuit is connected in parallel to the series circuit of the relay (19) and the control element (20). (23) is a conducting element connected between the connection between the constant voltage element (21) and the resistor (22) and the gate of the control element (20), and (24) is the step-down resistor (14) and the control element ( A diode connected in series to 20), (25) a lamp for displaying a high voltage supply which is turned on when the control element (20) is turned on, (26) a resistance for protection of the control element (20), (2)
7) is a stabilizing capacitor.
前記検出回路（17）はその両端を前記第１ヒータ
（９）の両側間に接続され、電装部（15）としてフレー
ム（２）内に収納固定している。The detection circuit (17) has both ends connected between both sides of the first heater (9), and is housed and fixed in the frame (2) as an electrical component (15).
（28）は前記第１ヒータ（９）の一端と第２ヒータ
（10）の一端との接続部に接続した共通接点（28a）と
通常該共通接点と接続され交流電源（16）の一極に接続
した第１接点（28b）とフリーな第２接点（28c）を有す
る第１スイッチで、前記リレー（19）の作動によって共
通接点（28a）と第１接点（28b）との接続を解除するも
のである。（29）は前記第２ヒータ（10）の他端に接続
した共通接点（29a）と通常該共通接点と接続され保護
抵抗（30）の一端に接続した第１接点（29b）と交流電
源（16）の一極に接続した第２接点（29c）を有する第
２スイッチで、前記第１スイッチ（28）と同時に前記リ
レー（19）の作動によって共通接点（29a）が第２接点
（29c）に接続される。また、第２接点（29c）は前記第
１スイッチ（28）の第１接点（28b）に接続している。
そして、前記第１ヒータ（９）の他端と保護抵抗（30）
の他端はリミッター（13）を介して交流電源（16）の他
極に接続している。(28) is a common contact (28a) connected to a connection between one end of the first heater (9) and one end of the second heater (10), and one pole of the AC power supply (16) normally connected to the common contact. A first switch having a first contact (28b) and a free second contact (28c) connected to the first switch. The connection between the common contact (28a) and the first contact (28b) is released by the operation of the relay (19). Is what you do. (29) a common contact (29a) connected to the other end of the second heater (10), a first contact (29b) normally connected to the common contact and connected to one end of the protection resistor (30), and an AC power supply ( 16) A second switch having a second contact (29c) connected to one pole, and the common contact (29a) is changed to the second contact (29c) by the operation of the relay (19) simultaneously with the first switch (28). Connected to. The second contact (29c) is connected to the first contact (28b) of the first switch (28).
The other end of the first heater (9) and the protection resistor (30)
Is connected to the other pole of the AC power supply (16) via a limiter (13).
斯して、第１スイッチ（28）と第２スイッチ（29）の
各々の共通接点（28a）、（29a）が各々の第１接点（28
b）、（29b）に接続されている場合には、第１ヒータ
（９）と第２ヒータ（10）が並列接続されて交流電源
（16）が供給され、第１スイッチ（28）と第２スイッチ
（29）の各々の共通接点（28a）（29b）が各々の第２接
点（28c）、（29c）に接続されている場合には、第１ヒ
ータ（９）と第２ヒータ（10）が直列接続されて交流電
源（16）が供給される。Thus, the respective common contacts (28a) and (29a) of the first switch (28) and the second switch (29) are connected to the respective first contacts (28
b) and (29b), the first heater (9) and the second heater (10) are connected in parallel, an AC power supply (16) is supplied, and the first switch (28) and the second switch (28) are connected. When the common contacts (28a) and (29b) of the two switches (29) are connected to the respective second contacts (28c) and (29c), the first heater (9) and the second heater (10 ) Are connected in series to supply an AC power supply (16).
次に動作について述べると、第２図に示す状態におい
て、交流電源（16）に電圧100Vが供給された場合には第
１ヒータ（９）の両端には供給電圧が印加され検出回路
（17）にもその電圧が供給されるが、前記定電圧素子
（21）が導通しないため、リレー（19）が作動せず第１
スイッチ（28）と第２スイッチ（29）の各々の共通接点
（28a）、（29a）が各々の第１接点（28b）、（29b）に
接続されたままとなって第１ヒータ（９）と第２ヒータ
（10）が並列接続される。Next, the operation will be described. In the state shown in FIG. 2, when a voltage of 100 V is supplied to the AC power supply (16), the supply voltage is applied to both ends of the first heater (9) and the detection circuit (17) The constant voltage element (21) does not conduct, so that the relay (19) does not operate and the first
The common contacts (28a) and (29a) of the switch (28) and the second switch (29) remain connected to the respective first contacts (28b) and (29b), and the first heater (9) And the second heater (10) are connected in parallel.
交流電源（16）に電圧200Vが供給された場合には、リ
レー（19）が作動する前に瞬間的に第１ヒータ（９）と
第２ヒータ（10）の並列回路に200Vが印加されるために
定電圧素子（21）が導通し導通素子（23）及び制御素子
（20）が導通してリレー（19）を作動し第１スイッチ
（28）及び第２スイッチ（29）の各々の共通接点（28
a）、（29a）を各々の第２接点（28c）、（29c）に接続
し第１のヒータ（９）と第２ヒータ（10）を直列接続し
ランプ（25）が点灯する。この後、第１ヒータ（９）の
両端には連続してほぼ100Vの電圧が発生し検出回路（1
7）に供給されるが、制御素子（20）が連続して導通状
態を保持する。When a voltage of 200 V is supplied to the AC power supply (16), 200 V is instantaneously applied to the parallel circuit of the first heater (9) and the second heater (10) before the relay (19) operates. Therefore, the constant voltage element (21) conducts, the conducting element (23) and the control element (20) conduct, actuating the relay (19), and the common operation of each of the first switch (28) and the second switch (29). Contact (28
a) and (29a) are connected to the respective second contacts (28c) and (29c), the first heater (9) and the second heater (10) are connected in series, and the lamp (25) is turned on. Thereafter, a voltage of approximately 100 V is continuously generated at both ends of the first heater (9), and the detection circuit (1
7), but the control element (20) keeps the conduction state continuously.
この様にして、交流電源（16）の供給電圧が異ったい
ずれの場合であってもほぼ一定の発熱量が得られ熱板
（８）上に載置した容器（図示せず）を加熱する。In this manner, a substantially constant calorific value is obtained regardless of the supply voltage of the AC power supply (16), and the container (not shown) placed on the hot plate (8) is heated. I do.
（ト） 発明の効果 本発明は、各々がほぼ同抵抗値の第１ヒータ及び第２
ヒータを供給電圧の検出回路によって直列或は並列接続
するものであって、前記検出回路を第１ヒータ及び第２
ヒータの何れか一方の両端間に接続すると共に、通常は
第１ヒータと第２ヒータを並列接続したため、検出回路
の定電圧素子、制御素子、リレーには供給電圧が異った
としても低電圧が印加されることになる。即ち、高電圧
が印加された時には瞬間的に検出回路に高電圧が印加さ
れるが、その後はすぐに低電圧が印加されるため、各々
の部品の耐電圧が小さいものを使用することができ、検
出回路の外径寸法が小さく携帯に便利な加熱器具を提供
することができる。(G) Effects of the Invention The present invention provides a first heater and a second heater each having substantially the same resistance value.
A heater is connected in series or in parallel by a supply voltage detection circuit, and the detection circuit includes a first heater and a second heater.
Since the first heater and the second heater are connected in parallel while being connected between either one end of the heater, low voltage is applied to the constant voltage element, the control element, and the relay of the detection circuit even if the supply voltage is different. Is applied. That is, when a high voltage is applied, a high voltage is instantaneously applied to the detection circuit, and thereafter a low voltage is applied immediately, so that a component with a small withstand voltage can be used. In addition, it is possible to provide a heating device which is small in outer diameter of the detection circuit and is convenient for carrying.
第１図は本発明のヒータ切換装置を有する加熱器具の断
面図、第２図は同じく電気回路図である。 （９）……第１ヒータ、（10）……第２ヒータ、（16）
……交流電源、（17）……検出回路、（18）……電気部
品、（19）……リレー、（20）……制御素子、（21）…
…定電圧素子、（23）……導通素子、（28）……第１ス
イッチ、（29）……第２スイッチ、（30）……保護抵
抗。FIG. 1 is a sectional view of a heating device having a heater switching device according to the present invention, and FIG. 2 is an electric circuit diagram thereof. (9) ... first heater, (10) ... second heater, (16)
... AC power supply (17) Detection circuit (18) Electrical parts (19) Relay (20) Control element (21)
... constant voltage element, (23) ... conductive element, (28) ... first switch, (29) ... second switch, (30) ... protection resistor.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 蔵光 幸子 鳥取県鳥取市南吉方３丁目201番地 鳥 取三洋電機株式会社内 (56)参考文献 特開 昭58−195429（ＪＰ，Ａ) 特開 平４−46526（ＪＰ，Ａ) 特開 昭58−127523（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H02J 3/00 - 5/00 G05F 5/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Sachiko Kuramitsu 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) References JP-A-58-195429 (JP, A) JP-A Hei 4-46526 (JP, A) JP-A-58-127523 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) H02J 3/00-5/00 G05F 5/00
Claims (1)
値の第２のヒータと、前記第１及び第２ヒータの各々を
交流電源間に直列或は並列接続する第１及び第２スイッ
チと、前記交流電源の電圧を検出し前記第１及び第２ス
イッチを作動するリレー、定電圧素子、制御素子とから
なる検出回路とを備え、前記検出回路は、前記第１ヒー
タ或は第２ヒータの両端間に接続し交流電源の電圧が所
定電圧以上の時に第１及び第２スイッチを作動して第１
ヒータと第２ヒータを直列接続し、所定電圧以下の時に
第１及び第２スイッチによって第１ヒータと第２ヒータ
を並列接続するものであって、通常は前記第１ヒータと
第２ヒータを並列接続することを特徴とする加熱器具の
ヒータ切換装置。1. A first heater, a second heater having substantially the same resistance as the first heater, and first and second heaters connected in series or in parallel between an AC power supply, each of the first and second heaters. A switch for detecting the voltage of the AC power supply and activating the first and second switches, a constant voltage element, and a detection circuit including a control element, wherein the detection circuit includes the first heater or When the voltage of the AC power supply is connected to both ends of the second heater and the voltage of the AC power supply is equal to or higher than a predetermined voltage, the first and second switches are operated to set the first
A heater and a second heater are connected in series, and when the voltage is lower than a predetermined voltage, the first and second switches are connected in parallel by first and second switches. Usually, the first and second heaters are connected in parallel. A heater switching device for a heating appliance, which is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163280A JP2919562B2 (en) | 1990-06-20 | 1990-06-20 | Heating device heater switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163280A JP2919562B2 (en) | 1990-06-20 | 1990-06-20 | Heating device heater switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454831A JPH0454831A (en) | 1992-02-21 |
| JP2919562B2 true JP2919562B2 (en) | 1999-07-12 |
Family
ID=15770816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2163280A Expired - Fee Related JP2919562B2 (en) | 1990-06-20 | 1990-06-20 | Heating device heater switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2919562B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2443175B (en) | 2006-10-24 | 2011-07-20 | Acco Uk Ltd | A laminator assembly |
| JP5332538B2 (en) * | 2008-11-21 | 2013-11-06 | パナソニック株式会社 | Electric air heater |
| WO2011048708A1 (en) * | 2009-10-23 | 2011-04-28 | Ikeda Kazuhiro | Tire wheel with double structure and method of mounting same |
| GB2619047A (en) * | 2022-05-25 | 2023-11-29 | Dyson Technology Ltd | Hairstyling apparatus with reconfigurable current flows |
-
1990
- 1990-06-20 JP JP2163280A patent/JP2919562B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0454831A (en) | 1992-02-21 |
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