JPS635198Y2 - - Google Patents
Info
- Publication number
- JPS635198Y2 JPS635198Y2 JP18415983U JP18415983U JPS635198Y2 JP S635198 Y2 JPS635198 Y2 JP S635198Y2 JP 18415983 U JP18415983 U JP 18415983U JP 18415983 U JP18415983 U JP 18415983U JP S635198 Y2 JPS635198 Y2 JP S635198Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling fan
- fan motor
- output
- cooling
- present
- 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
- 238000001816 cooling Methods 0.000 claims description 24
- 238000010411 cooking Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Description
【考案の詳細な説明】
〈技術分野〉
本考案は、誘導加熱調理装置の冷却用フアンモ
ータの制御回路に関するものである。[Detailed Description of the Invention] <Technical Field> The present invention relates to a control circuit for a cooling fan motor of an induction cooking device.
〈従来技術〉
誘導加熱調理装置の出力は、１口タイプのもの
で通常、約200W〜1200Wまで連続的に調節する
ことができるが、最大出力時におけるスイツチン
グ素子等から生じる熱に伴なう調理装置内の温度
を冷却用フアンにより効率的に抑制するようにフ
アンの回転数が設定されているため、200W程度
の弱出力にて比較的長時間使用する場合は、スイ
ツチング素子のON時間が短かくなるに従い発生
する熱も少なくなり冷却風量は逆に少し過剰気味
となる現象が起つていた。また、冷却用フアンの
回転音もできるだけ少ない方が望ましく弱出力時
における冷却用フアンモータの印加電圧を低く設
定する制御回路の出現が要望されていた。<Prior art> The output of an induction heating cooking device is usually a single-burner type and can be continuously adjusted from about 200W to 1200W, but cooking due to heat generated from switching elements etc. at maximum output The rotation speed of the cooling fan is set to efficiently control the temperature inside the device, so when using the device for a relatively long time at a low output of about 200W, the ON time of the switching element is shortened. As the temperature increased, the amount of heat generated decreased, and on the contrary, the amount of cooling air became slightly excessive. Further, it is desirable that the rotational noise of the cooling fan be as small as possible, and there has been a demand for a control circuit that sets the voltage applied to the cooling fan motor low when the output is low.
〈目的〉
本考案は、上述の点に鑑みてなされたものであ
り、簡単な回路構成でもつて、出力に応じて冷却
用フアンモータの印加電圧を増減させ、弱出力に
適した冷却を行なうことを目的とするものであ
る。<Purpose> The present invention has been made in view of the above points, and it is an object of the present invention to increase or decrease the voltage applied to the cooling fan motor according to the output, even with a simple circuit configuration, to perform cooling suitable for low output. The purpose is to
〈構成〉
本考案は、上述の目的を達成するためになされ
たものであり、２次側にインバータ回路を接続し
てなる電源トランスの１次側巻線の中間タツプに
接続されてなる冷却用フアンモータを備えたこと
を特徴とするものである。<Configuration> The present invention has been made to achieve the above-mentioned object, and is a cooling transformer connected to the intermediate tap of the primary winding of a power transformer having an inverter circuit connected to the secondary side. It is characterized by being equipped with a fan motor.
〈実施例〉
以下、本考案の一実施例を図面に基づいて説明
する。<Example> Hereinafter, an example of the present invention will be described based on the drawings.
第１図は、本考案の実施例を示す誘導加熱調理
装置の冷却用フアンモータの制御回路図であつ
て、１は１次側に交流電源２を接続し、２次側に
整流器３を介して加熱コイルを駆動するスイツチ
ング素子及び駆動回路を含むインバータ回路４を
接続してなる電源トランスであり、１次側の巻線
５の中間タツプ５′には整流器６を介して冷却用
フアンモータ７が接続されている。 FIG. 1 is a control circuit diagram of a cooling fan motor of an induction heating cooking device showing an embodiment of the present invention, in which 1 connects an AC power supply 2 to the primary side and a rectifier 3 to the secondary side. This is a power transformer in which an inverter circuit 4 including a switching element and a drive circuit for driving a heating coil is connected, and a cooling fan motor 7 is connected to an intermediate tap 5' of a primary winding 5 via a rectifier 6. is connected.
次に上記構成からなる本考案の実施例について
第２図に示す冷却用フアンモータの特性図を参照
して説明する。 Next, an embodiment of the present invention having the above structure will be described with reference to a characteristic diagram of a cooling fan motor shown in FIG.
まず、出力を200W程度の弱出力に設定してイ
ンバータ回路４の入力電流を2Aに調節すると、
冷却用フアンモータ７の印加電圧は約11Vとなる
が、1200W程度の最大出力時には、２次側に流れ
るインバータ回路４に流れる電流が増加するため
電源トランス１の１次側の巻線５の中間タツプ
５′に誘起される電圧が上昇して冷却用フアンモ
ータ７の印加電圧は約12Vになる。このように入
力電流つまり、２次側の負荷電流の増加に伴なつ
て冷却用フアンモータ７の印加電圧が増大するの
で冷却用送風量も増加し冷却効果を高めることが
できる。 First, if you set the output to a weak output of about 200W and adjust the input current of the inverter circuit 4 to 2A,
The voltage applied to the cooling fan motor 7 is about 11V, but at the maximum output of about 1200W, the current flowing to the inverter circuit 4 flowing to the secondary side increases, so the voltage between the windings 5 on the primary side of the power transformer 1 increases. The voltage induced at the tap 5' increases and the voltage applied to the cooling fan motor 7 becomes approximately 12V. In this way, as the input current, that is, the load current on the secondary side increases, the voltage applied to the cooling fan motor 7 increases, so the amount of cooling air blown also increases, and the cooling effect can be enhanced.
〈効果〉
以上に説明したように、本考案は、２次側にイ
ンバータ回路を接続してなる電源トランスの１次
側巻線の中間タツプに接続されてなる冷却用フア
ンモータを備えたから、２次側の負荷電流の増減
に応じて冷却用フアンの回転数を自動的に増減さ
せることができるので、冷却効率を最適に設定し
た状態で、特に弱出力時に冷却用フアンの回転を
抑制することができ、フアン及びフアンモータの
回転騒音も少なくなるので、商品性を高めるとと
もに、きわめて簡単な回路構成でもつて実施でき
るため低価格で実用価格の高い誘導加熱調理装置
を提供することができる。<Effects> As explained above, the present invention includes a cooling fan motor connected to the intermediate tap of the primary winding of a power transformer with an inverter circuit connected to the secondary side. Since the rotation speed of the cooling fan can be automatically increased or decreased according to the increase or decrease of the load current on the next side, it is possible to suppress the rotation of the cooling fan, especially when the output is low, with the cooling efficiency set to the optimum. Since the rotating noise of the fan and the fan motor is reduced, it is possible to improve the marketability, and since it can be implemented with an extremely simple circuit configuration, it is possible to provide an induction heating cooking device that is low in price and has a high practical cost.
第１図は、本考案の実施例を示す誘導加熱調理
装置の冷却用フアンモータの制御回路図、第２図
は、冷却用フアンモータの特性図である。
１……電源トランス、４……インバータ回路、
５……１次側の巻線、５′……中間タツプ、７…
…冷却用フアンモータ。
FIG. 1 is a control circuit diagram of a cooling fan motor of an induction heating cooking apparatus showing an embodiment of the present invention, and FIG. 2 is a characteristic diagram of the cooling fan motor. 1...Power transformer, 4...Inverter circuit,
5... Primary side winding, 5'... Intermediate tap, 7...
...Cooling fan motor.
Claims (1)
ランスの１次側巻線の中間タツプに接続されてな
る冷却用フアンモータを備えたことを特徴となる
誘導加熱調理装置。 An induction heating cooking device characterized by comprising a cooling fan motor connected to an intermediate tap of a primary winding of a power transformer having an inverter circuit connected to its secondary side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18415983U JPS6090792U (en) | 1983-11-28 | 1983-11-28 | induction heating cooking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18415983U JPS6090792U (en) | 1983-11-28 | 1983-11-28 | induction heating cooking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6090792U JPS6090792U (en) | 1985-06-21 |
| JPS635198Y2 true JPS635198Y2 (en) | 1988-02-12 |
Family
ID=30398383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18415983U Granted JPS6090792U (en) | 1983-11-28 | 1983-11-28 | induction heating cooking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6090792U (en) |
-
1983
- 1983-11-28 JP JP18415983U patent/JPS6090792U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6090792U (en) | 1985-06-21 |
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