JPH0328141B2 - - Google Patents
Info
- Publication number
- JPH0328141B2 JPH0328141B2 JP57077168A JP7716882A JPH0328141B2 JP H0328141 B2 JPH0328141 B2 JP H0328141B2 JP 57077168 A JP57077168 A JP 57077168A JP 7716882 A JP7716882 A JP 7716882A JP H0328141 B2 JPH0328141 B2 JP H0328141B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- heater
- contact
- switching
- heaters
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
【発明の詳細な説明】
本発明はヒータを有する電気器具に係り、特に
日本国と電圧の異なる国においても自動的に電気
回路が切り換わり、加熱に適した電圧がヒータに
通電されるようにすることを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric appliance having a heater, and in particular, the electric circuit is automatically switched even in countries where the voltage is different from Japan, so that the heater is energized with a voltage suitable for heating. The purpose is to
従来この種の切り換えが必要な電気器具におい
ては、100Vで使用すべきところを電圧切り換え
を間違えて例えば200Vにスイツチを合わせて通
電すると、ヒータがほとんど加熱せず湯が沸かな
かつたり調理が出来なかつたりした。反対に
200Vで使用すべきところを例えば100Vにスイツ
チを合わせて通電すると、ヒータが異常加熱し断
線する欠点があつた。 Conventionally, with electrical appliances that require this type of switching, if you make a mistake in switching the voltage when it should be used at 100V and turn on the switch to 200V, the heater will hardly heat up and the water will not boil or you will not be able to cook. It was. Conversely
For example, if you turned on the switch to 100V when it should be used at 200V, the heater would overheat and break.
そこで上記の欠点を解消するものとして、例え
ば特開昭52−135026号公報に示された電源自動切
替装置が知られている。この装置はトランスの１
次側の巻線数を電源電圧に応じて自動的に切替
え、トランスの２次側に接続された負荷に一定の
電圧を供給する構成としている。しかしながら、
この装置はトランスを必要とするので形状が大型
化するとともに重量が増大するという欠点があ
る。そのため、ドライヤーやアイロン等のように
手で持つて使う小型の器具に実施すればその操作
性、携帯性が悪くなるという欠点がある。 As a solution to the above-mentioned drawbacks, an automatic power supply switching device disclosed in, for example, Japanese Patent Application Laid-Open No. 135026/1980 is known. This device is one of the transformers.
The number of windings on the secondary side is automatically switched according to the power supply voltage, and a constant voltage is supplied to the load connected to the secondary side of the transformer. however,
Since this device requires a transformer, it has the disadvantage of increasing its size and weight. Therefore, if this method is applied to a small handheld device such as a hair dryer or an iron, the operability and portability of the device will be poor.
そこで本発明は、上記の如き欠点を解消し、小
型、軽量化を図り、操作性、携帯性のよい電気器
具を提供するものである。 SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks, and provides an electric appliance that is small and lightweight, and has good operability and portability.
以下にその実施例を図面に基づいて説明する。 Examples thereof will be described below based on the drawings.
１は商業用交流電源、２，２は分圧用抵抗で片
方の分圧用抵抗２と並列に平滑用コンデンサー３
を接続している。４は電磁リレー用のコイル５を
介して電源１に接続されるサイリスタで、制御回
路Ａを形成している。６は抵抗７を介して前記分
圧用抵抗２，２の中点と前記サイリスタ４のゲー
トに接続したシエナーダイオードあるいはダイア
ツク等のトリガー用素子で、その特性を印加電圧
が100V前後のときにはブレークオーバー電圧を
越えずに非導通で、200V前後のときにはブレー
クオーバー電圧を越えて導通状態となるように設
定している。８，９は略同一の抵抗値を有した第
１ヒータ、第２ヒータである。１０は第１切換接
片で、前記第１ヒータ８と第２ヒータ９とを並列
にあるいは直列に切り換え接続するもので、ａ接
点(a)とｂ接点(b)とを有している。１１は第２切換
接片で、前記コイル５とサイリスタ４との中点に
接続したｄ接点(d)と、前記第１ヒータ８と第２ヒ
ータ９との中点に接続したｃ接点(c)とを有してい
る。そして、前記コイル５に通電されていないと
きには前記第１切換接片１０はａ接点(a)側に、第
２切換接片１１はｃ接点ｃ側に切り換わつてお
り、前記コイル５に通電されたときには第１切換
接片１０はｂ接点(b)側に、第２切換接片１１はｄ
接点(d)側に切り換わる。すなわち、前記コイル５
に通電されたときには第１ヒータ８と第２ヒータ
９とは直列となり、非通電のときには両ヒータ
８，９は並列となるものである。尚、前記第１切
換接片１０と第２切換接片１１とで切換回路Ｂを
形成している。 1 is a commercial AC power supply, 2 and 2 are voltage dividing resistors, and a smoothing capacitor 3 is connected in parallel with one voltage dividing resistor 2.
are connected. A thyristor 4 is connected to the power source 1 via an electromagnetic relay coil 5, and forms a control circuit A. Reference numeral 6 denotes a triggering element such as a Sienna diode or diac connected to the midpoint of the voltage dividing resistors 2 and 2 and the gate of the thyristor 4 via a resistor 7, and its characteristics are such that it will break over when the applied voltage is around 100V. It is set so that it is non-conductive without exceeding the voltage, and becomes conductive when the voltage exceeds the breakover voltage at around 200V. Reference numerals 8 and 9 indicate a first heater and a second heater having substantially the same resistance value. A first switching contact 10 connects the first heater 8 and second heater 9 in parallel or in series, and has an a contact (a) and a b contact (b). Reference numeral 11 designates a second switching contact piece, which includes a d contact (d) connected to the midpoint between the coil 5 and the thyristor 4, and a c contact (c) connected to the midpoint between the first heater 8 and second heater 9. ). When the coil 5 is not energized, the first switching contact 10 is switched to the a contact (a) side, and the second switching contact 11 is switched to the c contact (c) side, so that the coil 5 is energized. When the switch is switched, the first switching contact piece 10 is on the b contact (b) side, and the second switching contact piece 11 is on the d side.
Switches to contact (d) side. That is, the coil 5
When energized, the first heater 8 and second heater 9 are connected in series, and when not energized, both heaters 8 and 9 are connected in parallel. Note that the first switching contact piece 10 and the second switching contact piece 11 form a switching circuit B.
斯る構成による動作を説明すると、まず日本国
等に使用されている商業用交流電源が100V前後
の国において使用する時には、トリガー用素子６
に印加される電圧が低くてブレークオーバー電圧
に達せず、よつてこのトリガー用素子６は導通せ
ず、これによつてサイリスタ４もOFF状態を維
持してコイル５には通電されない。従つて、第１
切換接片１０はａ接点(a)側に、第２切換接片１１
はｃ接点(c)側に切り換わつており、前記第１ヒー
タ８と第２ヒータ９とは並列接続となつてこの両
ヒータ８，９には夫々100V前後の電圧が印加さ
れて通常加熱に支障なく被加熱物を加熱するもの
である。 To explain the operation of such a configuration, first, when used in countries where the commercial AC power supply used in Japan etc. is around 100V, the trigger element 6
The voltage applied to the trigger element 6 is not conductive because the voltage applied to the trigger element 6 is low and does not reach the breakover voltage, so that the thyristor 4 also maintains an OFF state and the coil 5 is not energized. Therefore, the first
The switching contact piece 10 has a second switching contact piece 11 on the a contact (a) side.
is switched to the C contact (c) side, and the first heater 8 and the second heater 9 are connected in parallel, and a voltage of around 100 V is applied to each of the heaters 8 and 9 for normal heating. It heats the object to be heated without any hindrance.
一方、商業用交流電源が200V前後の国におい
て使用する時には、前記トリガー用素子６に印加
される電圧が高くてブレークオーバー電圧に達
し、よつてこのトリガー用素子６は導通してサイ
リスタ４にゲート電圧を付与してこのサイリスタ
４をONせしめ、コイル５に通電せしめる。これ
によつて前記第１切換接片１０はｂ接点(b)側へ、
第２切換接片１１はｄ接点(d)側へ切り換え接続す
る。そしてこの時には前記第１ヒータ８と第２ヒ
ータ９とは直列接続となつて、この両ヒータ８，
９には印加電圧の1/2づつ、すなわち100V前後の
電圧が印加されることになつて、前述したような
同じ状態にて被加熱物を加熱することができる。 On the other hand, when used in a country where the commercial AC power supply is around 200V, the voltage applied to the trigger element 6 is high and reaches the breakover voltage, so the trigger element 6 becomes conductive and the thyristor 4 is gated. A voltage is applied to turn on the thyristor 4 and energize the coil 5. As a result, the first switching contact piece 10 moves to the b contact (b) side,
The second switching contact piece 11 is switched and connected to the d contact (d) side. At this time, the first heater 8 and the second heater 9 are connected in series, and both heaters 8,
9 is applied with a voltage of about 100 V, 1/2 of the applied voltage, so that the object to be heated can be heated in the same state as described above.
本発明は以上の如く構成したものであるから、
商業用交流電源の電圧の異なる国で本発明電気器
具を使用しても自動的にその変化電圧を検出して
ヒータに印加される電圧を常に略一定に維持し、
異常加熱によるヒータの断線や電圧がかからずに
被加熱物を加熱できなかつたりすることを防止
し、最適な加熱を印加電圧に関係なく行なうこと
ができる。さらに、トランス等の大型部品が不要
となるので、小型、計量化を図り、操作性、携帯
性のよい器具を提供することができる。 Since the present invention is configured as described above,
Even if the electric appliance of the present invention is used in a country where the voltage of the commercial AC power supply differs, the voltage change is automatically detected and the voltage applied to the heater is always kept approximately constant;
It is possible to prevent disconnection of the heater due to abnormal heating and failure to heat the object due to no voltage being applied, and to perform optimal heating regardless of the applied voltage. Furthermore, since large parts such as a transformer are not required, it is possible to provide a device that is compact and lightweight, and has good operability and portability.
図は本発明電気器具に使用せる電気回路図であ
る。
６……トリガー用素子、Ａ……制御回路、Ｂ…
…切換回路、８，９……ヒータ。
The figure is an electrical circuit diagram that can be used in the electrical appliance of the present invention. 6...Trigger element, A...Control circuit, B...
...Switching circuit, 8, 9...Heater.
Claims (1)
用可能で且つヒータを有する電気器具において、
前記ヒータは複数個設けるとともに電圧の変化に
応じて導通あるいは非導通状態となるトリガー用
素子と、この状態に応答して通電制御される制御
回路と、該制御回路の通電制御により前記ヒータ
を直列あるいは並列に切り換える切換回路とから
なり、入力電圧の変動に応じて前記ヒータを夫々
直列接続あるいは並列接続せしめたことを特徴と
する電気器具。1 In electrical appliances that can be used with an input voltage of around 100V or around 200V and have a heater,
A plurality of the heaters are provided, and the heaters are connected in series by a trigger element that becomes conductive or non-conductive in response to a change in voltage, a control circuit that controls energization in response to this state, and a control circuit that controls energization of the control circuit. Alternatively, an electric appliance comprising a switching circuit that switches in parallel, and the heaters are connected in series or in parallel, respectively, depending on fluctuations in input voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57077168A JPS58195429A (en) | 1982-05-08 | 1982-05-08 | Electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57077168A JPS58195429A (en) | 1982-05-08 | 1982-05-08 | Electric device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58195429A JPS58195429A (en) | 1983-11-14 |
| JPH0328141B2 true JPH0328141B2 (en) | 1991-04-18 |
Family
ID=13626254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57077168A Granted JPS58195429A (en) | 1982-05-08 | 1982-05-08 | Electric device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58195429A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3346833B2 (en) * | 1993-06-15 | 2002-11-18 | 松下電工株式会社 | Safety device for heat-sensitive heating element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135026A (en) * | 1976-05-07 | 1977-11-11 | Tokyo Keiki Kk | Power source automatic change over device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5569831U (en) * | 1978-11-08 | 1980-05-14 |
-
1982
- 1982-05-08 JP JP57077168A patent/JPS58195429A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135026A (en) * | 1976-05-07 | 1977-11-11 | Tokyo Keiki Kk | Power source automatic change over device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58195429A (en) | 1983-11-14 |
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