JP7292756B2 - 加熱空気式電子タバコヒーター、セラミック発熱体及びその製造方法 - Google Patents
加熱空気式電子タバコヒーター、セラミック発熱体及びその製造方法 Download PDFInfo
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- JP7292756B2 JP7292756B2 JP2021566977A JP2021566977A JP7292756B2 JP 7292756 B2 JP7292756 B2 JP 7292756B2 JP 2021566977 A JP2021566977 A JP 2021566977A JP 2021566977 A JP2021566977 A JP 2021566977A JP 7292756 B2 JP7292756 B2 JP 7292756B2
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- ceramic
- alumina
- heating element
- honeycomb ceramic
- heating
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Description
ジルコニアセラミック基板+貴金属発熱ペーストでセラミック発熱シートを作製し、体積が小さく、重量が軽く、高出力密度を得ることができ、熱効率が高く、優れた熱的特性があり、昇温速度が速く、任意の温度分布を得ることができ、信頼性が高く、長使用寿命、発熱体材料が酸化せず、耐酸塩基性能が優れ、耐腐食、耐高温、温度が均一で、熱伝導性能が良く、熱補償速度が速い。
棒状構造を採用した発熱体であり、強度が高く、破断されない。高温同時焼成セラミック発熱体は、緻密性が良く、発熱線を完全にセラミックに包まれ、長期間使用信頼性が高く、接合部は1000℃銀ろう付けプロセスを採用し、接合安定、且つ長期間使用でも350℃の高温に耐えることができる。
1、あぶる対象品(喫煙物品)の熱伝導性能が悪く、温度を十分に伝導できず、あぶる対象品の内外の加熱不均一を招く。
2、様々なタイプのあぶる対象品の空間密度の差が大きく、異なるタイプのあぶる対象品を交換する時、その加熱効果保障が困難であり、一般的に、セット使用のあぶる対象品を使用しなければ比較的良好な効果を得ることができなく、適応性は非常に悪い。
まとめると、このような加熱装置には、加熱不均一、タバコの煙の量が小さく、吸い感が薄く、ユーザ体験が悪いなどの技術的欠陥が存在し、これらの様々な欠陥は本分野の更なる発展及び普及応用を厳重に制限している。
ステップ一:アルミナセラミック泥材料の調製:0.01~0.05重量部硝酸マグネシウム、0.01~0.05重量部オキシ塩化ジルコニウム、0.01~0.05重量部硝酸イットリウム、1.5~2.5重量部オレイン酸、1~2重量部潤滑剤、3~15重量部接合剤及び10~30重量部脱イオン水を100重量部のナノアルミナ粉に加え、配合機に入れ、30℃以下の温度下で1~5時間混練し、分散均一、固体含有量が75~85%であるアルミナハニカムセラミック泥材料を調製する。
ステップ一:アルミナセラミック泥材料の調製:0.01~0.05重量部硝酸マグネシウム、0.01~0.05重量部オキシ塩化ジルコニウム、0.01~0.05重量部硝酸イットリウム、1.5~2.5重量部オレイン酸、1~2重量部潤滑剤、3~15重量部接合剤及び10~30重量部脱イオン水を100重量部のナノアルミナ粉に加え、配合機に入れ、30℃以下の温度下で1~5時間混練し、分散均一、固体含有量が75~85%であるアルミナハニカムセラミック泥材料を調製する。
ステップ一:アルミナセラミック管泥材料の調製:0.04重量部Mg(NO3)2・6H2O、0.04重量部ZrOCl2・8H2O、0.01重量部Y(NO3)3・6H2O、2.4重量部オレイン酸、1.2重量部ポリエチレングリコール600、14重量部高純度エチルセルロースエーテル及び12重量部脱イオン水を100重量部のナノアルミナ粉に加え、配合機に入れ、30℃以下の温度下で5時間混練し、分散均一、固体含有量が75%であるアルミナハニカムセラミック泥材料を調製する。
ステップ一:アルミナセラミック管泥材料の調製:0.02重量部Mg(NO3)2・6H2O、0.05重量部ZrOCl2・8H2O、0.015重量部Y(NO3)3・6H2O、2重量部オレイン酸、1.5重量部ポリエチレングリコール600、8重量部高純度エチルセルロースエーテル及び20重量部脱イオン水を100重量部のナノアルミナ粉に加え、配合機に入れ、30℃以下の温度下で5時間混練し、分散均一、固体含有量が78%であるアルミナハニカムセラミック泥材料を調製する。
Claims (14)
- ハニカムセラミック本体と、発熱プリント回路とを含むセラミック発熱体であって、
前記ハニカムセラミック本体内には、円形孔又は多辺形孔である多孔性通路が設けられており、
前記発熱プリント回路は、前記多孔性通路を通過する空気を加熱するために、前記ハニカムセラミック本体の周壁の外表面に印刷により周設されており、
前記ハニカムセラミック本体は柱状体であり、且つ前記多孔性通路は、前記ハニカムセラミック本体の軸方向に沿って前記ハニカムセラミック本体の一端側から他端側に連続的に形成されており、前記ハニカムセラミック本体内に複数配置されている、
ことを特徴とするセラミック発熱体。 - 前記ハニカムセラミック本体は、アルミナハニカムセラミック本体であり,且つ前記アルミナハニカムセラミック本体の密度は3.86g/cm3以上である、ことを特徴とする請求項1に記載のセラミック発熱体。
- 前記多孔性通路は、前記ハニカムセラミック本体内に均一に分布されている、ことを特徴とする請求項1に記載のセラミック発熱体。
- 前記多孔性通路は、前記ハニカムセラミック本体の中心に配置されている、ことを特徴とする請求項1に記載のセラミック発熱体。
- 前記ハニカムセラミック本体は、断面が円形又は多辺形である柱状体である、ことを特徴とする請求項1~4のいずれか1項に記載のセラミック発熱体。
- 請求項1~5のいずれか1項に記載のセラミック発熱体と、予備加熱装置とを含む加熱空気式電子タバコヒーターであって、
前記予備加熱装置の下方には、前記セラミック発熱体が設けられている、ことを特徴とする加熱空気式電子タバコヒーター。 - 前記予備加熱装置は、予熱管を含み、前記予熱管と前記セラミック発熱体との間には、導流片が設けられており、前記導流片には、若干の導流孔が開設されている、ことを特徴とする請求項6に記載の加熱空気式電子タバコヒーター。
- 前記セラミック発熱体と前記予備加熱装置は、密封カバー内に設けられている、ことを特徴とする請求項6に記載の加熱空気式電子タバコヒーター。
- 前記予備加熱装置は、予熱用の薄壁アルミナセラミック管を含み、前記薄壁アルミナセラミック管中心のチャンバは、喫煙物品を放置するために用いられており、前記薄壁アルミナセラミック管の一端開口部と底板とを一つのコップ本体に組み合わせており、前記底板には、若干の熱気流通孔が開設されている、ことを特徴とする請求項6に記載の加熱空気式電子タバコヒーター。
- 前記薄壁アルミナセラミック管の密度は3.86g/cm3以上である、ことを特徴とする請求項9に記載の加熱空気式電子タバコヒーター。
- 前記底板の中心には、一つの仮想円周の周りに複数の熱気流通孔が均一に設けられており、前記熱気流通孔は、孔径範囲が0.1~2mmである円形孔である、ことを特徴とする請求項9に記載の加熱空気式電子タバコヒーター。
- 前記底板の材料は、高純度アルミナセラミックである、ことを特徴とする請求項9に記載の加熱空気式電子タバコヒーター。
- 請求項1~5のいずれか1項に記載のセラミック発熱体の製造方法であって、以下のステップを含み、
ステップ一:アルミナセラミック泥材料の調製:0.01~0.05重量部硝酸マグネシウム、0.01~0.05重量部オキシ塩化ジルコニウム、0.01~0.05重量部硝酸イットリウム、1.5~2.5重量部オレイン酸、1~2重量部潤滑剤、3~15重量部接合剤及び10~30重量部脱イオン水を100重量部のナノアルミナ粉に加え、配合機に入れ、30℃以下の温度下で1~5時間混練し、分散均一、固体含有量が75~85%であるアルミナハニカムセラミック泥材料を調製し、
ステップ二:アルミナハニカムセラミックの成形:ステップ一で調製されたアルミナハニカムセラミック泥材料を真空脱泡装置付きのスクリュー式セラミック押出成形機に加え、セラミック泥材料は、スクリューの押出下で、金型ヘッドを介して、中空、薄壁ハニカム状セラミック半加工品に押出成形し、
ステップ三:アルミナハニカムセラミック半加工品の乾燥:ステップ二で調製されたセラミック半加工品を乾燥オーブンに移して、40~50℃熱風条件下で、5~10分間乾燥脱水し、外観及び真直度がいずれも要求仕様どおりのセラミック生地体を得、
ステップ四:アルミナセラミック生地体のバインダ除去:ステップ三で調製されたセラミック生地体を1100~1200℃温度下で素焼きし、セラミック素焼き体を得、
ステップ五:アルミナハニカムセラミックの焼成:ステップ四のセラミック素焼き体を高温モリブデン管中に置いて、1600~1800℃温度下で、水素ガス雰囲気下又は空気中で直接焼成し、アルミナハニカムセラミックを得、
ステップ六:アルミナハニカムセラミック表面加熱プリント回路及びその導線の制作:ステップ五で調製されたアルミナハニカムセラミックをシルクスクリーン印刷技術でその外表面に厚膜電熱線を印刷し、プリント回路を乾燥させた後、パッド部に銀はんだを塗布して導線を接着し、乾燥オーブンに再入って乾燥させ、その後、炉に移して800~1500℃温度下で焼結し、一体焼成した導線とプリント回路を得るとともに、炉内での導線の銀ろう付けを完成する、ことを特徴とするセラミック発熱体の製造方法。 - 前記ステップ一で使用されるナノアルミナ粉の純度は99.99%以上であり、粒子粒径は350nmであり、比表面積は7m2/gである、ことを特徴とする請求項13に記載のセラミック発熱体の製造方法。
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