TWI306392B - Electrically heated cigarette smoking system with internal manifolding for puff detection - Google Patents

Electrically heated cigarette smoking system with internal manifolding for puff detection Download PDF

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Publication number
TWI306392B
TWI306392B TW092131225A TW92131225A TWI306392B TW I306392 B TWI306392 B TW I306392B TW 092131225 A TW092131225 A TW 092131225A TW 92131225 A TW92131225 A TW 92131225A TW I306392 B TWI306392 B TW I306392B
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Taiwan
Prior art keywords
cigarette
heater unit
passage
flow
smoker
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TW092131225A
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English (en)
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TW200416001A (en
Inventor
John Louis Felter
Robert E Lee
Ashok Solanky
Clint Blake
Pamela Davis
David E Shapre
Mark E Watson
Robert L Ripley
Brett W Stevenson
William J Crowe
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Philip Morris Prod
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50Control or monitoring
    • A24F40/51Arrangement of sensors
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F1/00Tobacco pipes
    • A24F1/02Tobacco pipes with arrangements for cleaning or cooling the smoke
    • A24F1/22Tobacco pipes with arrangements for cleaning or cooling the smoke with arrangements for cooling by air, e.g. pipes with double walls
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F13/00Appliances for smoking cigars or cigarettes
    • A24F13/02Cigar or cigarette holders
    • A24F13/04Cigar or cigarette holders with arrangements for cleaning or cooling the smoke
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48Fluid transfer means, e.g. pumps
    • A24F40/485Valves; Apertures
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20Devices using solid inhalable precursors

Description

1306392 玖、發明說明: (一) 發明所屬之技術領域 本發明係關於一種電氣吸煙系統,其在偵測到在香煙上吸 氣時可將香煙加熱。 (二) 先前技術 習知上傳統點燃的香煙由於煙草的燃燒會送出氣味及香 味給使用者。主要係煙草的大量可燃性材料,由於在抽煙期 間超過800°C的習知香煙中係以一般燃燒溫度施加的熱而被 氧化。藉由在香煙之嘴端上吸氣,熱被抽吸通過相鄰之大量 煙草。在此加熱之時,會產生可燃性材料之低效率的氧化, 並且產生許多蒸餾物及裂解物。因爲這些產物係通過吸煙裝 置本體而進入吸煙者之嘴中,其等被冷卻及凝結而形成氣溶 膠,其將與吸煙有關的氣味及香味提供給消費者。傳統點燃 的香煙在抽吸之間的燻燒之時產生側流之煙霧,其對某些非 吸煙者無法接受。而且一旦點燃之後,傳統香煙必須完全抽 完或被丟棄。 在此加入做爲參考之共同受讓的美國專利No. 5, 388, 5 94 中揭示有一種電氣吸煙系統,其包含有新穎的電氣點火機及 與點火機合作之新穎香煙。點火機包含有裝在一滑動地容納 香煙之煙草桿部之結構中的複數個金屬加熱器。此吸煙系統 之許多優點之一個爲,點火機可重複使用於多個香煙。如美 國專利No . 5 , 3 8 8,5 9 4中所揭示的電氣吸煙系統之主要目的 之一個爲,提供與抽吸傳統香煙所體驗之感覺很相近的抽煙 感覺。一些感覺包含吸煙者在香煙上抽吸時體驗的抗抽吸 —y _ 1306392 (RTD ),以及當吸煙者開始在香煙上吸取之時與當吸煙者可 首次偵測到與吸煙有關的氣味及香味時之間的時間長度。 傳統香煙之RTD爲迫使空氣以1 7 . 5毫升/秒之速率通過標 準香煙之全長所需的壓力。RTD通常以英吋或毫米水柱表示 。吸煙者在抽吸傳統香煙時有某種期望,即太小的RTD或太 多的RTD會減少吸煙樂趣。普通排放量之更傳統的香煙具有 RTD=s ’其一般在約1〇〇至130毫米水柱的範圍內。 在電氣吸煙系統中建立一個所需之RTD係很複雜,在如美 國專利No.5 ,388,594及美國專利No.5,692, 525所示之吸煙 系統中的環境,空氣首先在被抽吸離開香煙之前,被抽吸通 過香煙點火機內之通道。這些系統之香煙的濾嘴尖端最好爲 流通及/或低微粒效率之濾嘴,以減少任何產生煙霧的壓力 損失。此種濾嘴產生低壓力降,並且不會產生太多RTD。因 而,先前技術包括主要在電氣吸煙系統之點火機部建立RTD( 或壓力降),例如在此加入本文中供參考的共同受讓之美國 專利No. 5,9 5 4, 97 9中揭示,在靠近點火機之空氣進入口的 環狀玻璃質(frit)(多孔體)。因爲壓力降隨著瓶頸尺寸之任 何變化而寬廣地改變,據發現,點火機本體中玻璃質或小的 流動瓶頸之其他型式必須小心地製造。因此會增加費用及其 它生產及品質之顧慮事項。再者,小的流動通道易阻塞,尤 其在任何煙霧在完成抽吸之後可逗留之點火機。 再者,建立響應於香煙之抽吸而以一或多個加熱器元件, 對香煙之一部分實施電氣加熱的快速反應時間係一個必需 的特徵。爲了達成與傳統香煙同等的體驗,理想上香煙的加 ~ 8 - 1306392 熱必須與噴煙周程(puff cycle)之開始而瞬時間完成。然而 ,感測系統一般在噴煙周程(p u f f c y c 1 e )之開始,與使用一 或多個加熱器對香煙進行加熱之間有一些延遲時間。 在此加入本文中供參考的共同受讓之如美國專利 No.5,388,594及美國專利No.5,878,752所顯示之吸煙系統 的加熱固定具,包括有複數個被支持且徑向隔開之加熱片 (h e a t i n g b 1 a d e ),其被支撐以從匯集點延伸,並且個別在 電子電路的控制下由電源供能,以加熱在一支插入的香煙周 圍的許多個別加熱區。最好如傳統香煙一樣地使用八個加熱 片以形成八道煙,雖然可以裝設較多或較少的加熱片。 電氣吸煙系統中之電子電路可由抽吸感應感測器所供電 ’抽吸感應感測器對吸煙者在香煙上抽吸之時所產生的壓力 降很敏銳。由於吸煙者在香煙上抽吸之時所產生的壓力變化 ,抽吸感測器作動適當的一個香煙加熱元件或加熱片。依賴 壓力降之偵測而啓動吸煙的感測器需要通過香煙之RTD,吸 煙者發現其比傳統香煙的RTD較高。電氣吸煙系統最好提供 RTD,使其儘可能地接近傳統香煙,而且亦避免加熱片由於 吸煙者在香煙上抽吸以外的因素、諸如由於電氣吸煙系統之 移動或空氣移動通過電氣吸煙系統、所引起之震動或空氣流 過系統中而產生錯誤信號及非所需作動。 (三)發明內容 根據本發明之電氣加熱吸煙裝置的實施例,包括有一加熱 器單元,在加熱器單元內將熱施加於支持在加熱器單元內之 香煙的部分上之複數個加熱器,加熱器單元具有容納香煙之 -9- 1306392 一端的開口,並且可將該端定位在該等加熱器之附近,並且 加熱器單元形成至少吸入流動通道之局部,當吸煙者在定位 於加熱器單元之香煙上抽吸之時,周遭空氣經由流動通道被 抽入與香煙接觸。一外殻與加熱器單元耦合,並且被設計成 使吸煙者可以很舒適地握住。一隔板使加熱器單元相對於外 殼而定位,並且至少局部地形成一旁通流動通道而與外殼周 圍的周遭空氣相通,該隔板又形成一流動轉向通道,當吸煙 者在插入加熱器單元開口中的香煙上抽吸之時,周遭空氣經 由流動轉向通道從旁通流動通道被抽入吸入流動通道。一感 測器可被設置在流動轉向通道中或在吸入流動通道中,且較 佳地在通到吸入流動通道之流動轉向通道,以提供一顯示吸 煙者在香煙上抽吸之信號。 在另一實施例中,電氣加熱吸煙裝置之外殼包括有一個容 室,當香煙被插入外殼時,其係被形成於香煙濾嘴端之至少 局部周圍。一真空或壓力降(p r e s s u r e d r ο p )感測器可被裝 設於容室中,並且因此可感測在此位置上產生之真空或壓力 降。當吸煙者在香煙上抽吸之時,在此位置之香煙的開口可 被用於感測在香煙中產生的內部真空。此配置可比RTD (或壓 力降)主要被建立在電氣吸煙系統的點火機部內、如共同受 讓之美國專利No . 5,9 54 , 97 9中所揭示之靠近點火機的空氣 進入口的環狀玻璃質(多孔體)之配置提供更快速之反應時 間。 (四)實施方式 根據本發明實施例之電氣加熱吸煙系統包括有一具有多 -10- 1306392 個加熱元件之加熱器單元,該等加熱器可將熱施加於支持在 加熱器單元內之香煙的部分上。加熱器單元形成至少吸入流 動通道之局部’當吸煙者在香煙上抽吸之時,周遭空氣經由 流動通道被抽入而與香煙接觸。一隔板使加熱器單元相對於 外殻而定位’並且至少局部地形成一旁通流動通道而與外殻 周圍的周遭空氣相通。該隔板又形成一通到吸入流動通道的 流動轉向通道,當吸煙者在香煙上抽吸之時,周遭空氣經由 流動轉向通道從旁通流動通道被抽入吸入流動通道。 與周遭空氣相通的旁通流動通道,及僅在吸煙者於香煙上 抽吸之時,周遭空氣從旁通流動通道被抽入吸入流動通道所 經過的流動轉向通道之設置,可確保位於流動轉向通道或吸 入流動通道中的感測器僅在吸煙者於香煙上抽吸之時被作 動。在外殻內及由外殻形成之流動通道,加熱器單元及使加 熱器單元相對於外殼而定位的隔板的配置,可改善電氣加熱 吸煙裝置的製造性》此配置產生一流動通道,其中可裝設感 測器且在吸煙者正在於香煙上抽吸時以外的時間,係與通過 裝置的額外周遭空氣流充分地隔絕。將感測器設置在空氣已 從旁通流動通道被轉向至少一次之後進入的流動轉向通道 或吸入流動通道’可減少錯誤信號,因爲空氣僅在吸煙者於 插入吸煙裝置的香煙上抽吸之時流經吸入流動通道。最好在 流動轉向通道中使用一流動感測器,因爲其可在吸煙者一開 始在香煙上抽吸就偵測流動,因而可使反應時間非常地相似 於吸煙者在抽吸傳統香煙時所感受到的反應時間。 根據本發明電氣加熱吸煙系統之另一實施例包括有一外 _ 1 1 一 1306392 殼;配置於外殼中之複數個加熱器’用來容納在其間的香煙 之一部分;一可輸送能量到加熱元件以加熱香煙之電源;及 一多歧管配置,其形成一在香煙濾嘴部份上圍住香煙之一部 分的抽吸感測室。該室係與香煙的內部通過香煙濾嘴部周圍 之細孔或開口而流體相通,因此使裝設成與容室相通的壓力 感測器,當吸煙者在香煙上抽吸之時’可偵測通過香煙的壓 力降。 在此另一實施例中,電氣加熱吸煙裝置之分開且不同的抽 吸感測室可被形成爲抵接於香煙的一部分上。抽吸感測室在 一個位置上可朝向抵接於香煙上之一特定點或面積,或者抽 吸感測室可圍住香煙的周圍。感測室在另一位置可通到可偵 測感測室之真空變化的壓力感測器開關或被該壓力感測器 開關所佔據。抽吸感測室可固定到電氣加熱吸煙裝置’或被 建立成電氣加熱吸煙裝置之分開的部分或容室。在香煙之情 形,香煙上與抽吸感測室抵接之一部分可包括有許多開口、 孔或細孔,其使可抽吸產品內部的壓力變化在抽吸時更容易 且直接地被感測。開口、孔或細孔可預先在可抽吸產品中形 成或可由包含在電氣加熱吸煙裝置中之穿刺工具所做成。 抽吸感測室可附著到電氣加熱吸煙系統之點火器部的外 表面,並且可包括有一環狀通道,其在香煙周圍之至少一部 分周圍形成一個容室。在此情形下,當香煙被設置於吸煙系 統之點火器部之時,通道係位於香煙的濾嘴端。 在一個變化體中,感測室爲其中心軸與狹長香煙軸之中心 軸成平行的圓柱狀。感測室可被形成在圓柱形多歧管配置之 -12- 1306392 內’其可與點火器之一端耦合或結合,使得當香煙被插通到 多歧管配置並進入點火器中之時,香煙的濾嘴端被形成於多 歧管配置之內的感測室所圍住。多歧管配置亦可與點火器形 成一體。形成於多歧管配置之內的通道可設計成將圍在吸煙 裝置或點火器周圍的周遭空氣引導到點火器的內部通道中 ,其係通到圍在香煙之煙草部的點火器之加熱器部分。 在現時狀態的技術中,一感測真空用之感測器可感測在加 熱器組合之內側的香煙之煙草部周圍之抽吸真空。加熱器具 有一限制裝置位於空氣入口路徑中,當吸煙者在香煙上抽吸 之時,其可形成一壓力降。爲了使吸煙系統之設計RTD更像 傳統香煙之KTD,限制裝置最好在本發明此實施例中被去除 ,並且所有RTD均在香煙中。因而在加熱器室中沒有壓力降 可感測。 在香煙之濾嘴端周圍的多歧管配置主要將周遭空氣無拘 束地通過內部通道而引導到加熱器,因而提供一從抽吸感測 器(真空感測器)到香煙之濾嘴端周圍的抽吸感測室之分開 的通道。因爲在香煙中仍形成有真空或壓力降,根據本發明 之此實施例的結構提供用來感測形成於香煙中之壓力降,其 中在香煙附近壓力降爲最大。此配置可使點火器更快速地反 應,及/或減少真空感測器系統所需之精密度。此亦可使用 現有的真空感測技術。 用於偵測流動或壓力降的感測器最好爲配合到很小空間 中的微電子加工裝置(micro-electrically machined d e v i c e ),使吸煙裝置整個尺寸可保持很小,並且感測器僅 1306392 快裝加 很煙動 供吸作 提熱時 可加號 時氣信 之電之 吸。器 抽化測 上變感 煙力自 香壓來 在或收 者動接 煙流在 吸成可 當形其 , 而 , 力因置 電,裝 的間子 量時電 小應有 。 很反含片 耗的包器 消速置熱 根據本發明實施例的電氣加熱吸煙裝置200之組合情況顯 示於第1圖中,第2圖爲分解圖。整個電氣加熱吸煙裝置20 0 包括有一上加熱器箱蓋20、一前外殼22及一左及右側電池 盒部26 , 24。如第2圖之分解圖所示,加熱器單元30係設置 於加熱器箱蓋20之下方,加熱器單元30係配合在隔板40 之內側,隔板40使加熱器單元相對於吸煙裝置之前外殻22 而設置。在加熱器箱蓋20之頂部的開口 1 8可供香煙插入到 加I熱器單元30之頂部開口 30a內。當香煙已經由開口 18被 插入加熱器單元30之頂部開口 30a內之時,其被置於配置 在香煙圓周之周圍之複數個加熱器片(未顯示)附近。加熱器 片於每次在香煙上抽吸一次之時依照順序地被作動,並且通 過加熱器片的電力充分地提高加熱器片的溫度到使煙草產 生熱解,煙草一般係包含於香煙之至少一層緊接在外香煙紙 層內側之被稱爲「墊(m a t )」層之內,如在此加入以做爲 參考之共同受讓的美國專利Nos.5, 388,594,5,878, 752及 5, 9 3 4 , 2 89中所顯示者。加熱器片與外香煙紙層接觸,並且 熱可充分地使外香煙紙層內側在墊層的煙草及在墊層內側 可能容納於煙草栓的額外煙草熱解。 一印刷電路板60被設置於隔板40與前外殼22之間,並 且包括有可顯示如電池充電準位及已插入加熱器單元30中 -14- 1306392 之香煙剩餘抽吸次數等訊息給吸煙者之液晶顯示器。印刷電 路板60上亦可裝設必要的電子元件,其在接收來自同時裝 設在印刷電路板上之感測器的信號時,可作動加熱器單元3 〇 中之加熱器片。如第1圖所示,穿過加熱器箱蓋20之長孔 23,25提供周遭空氣用之通道,當香煙被裝在開口 18內之時 ,周遭空氣可進入吸煙裝置中。 如第2圖及第4圖之更詳細之圖中清楚地顯示,隔板40 又形成有一周圍通道42或旁通流動通道,當吸煙裝置被組 合時,其係與長孔2 3 , 2 5對齊。 —加熱器單元連接器56被設置在加熱器單元30下方之內 殼構件52,54之內,其可提供裝在加熱器單元30內之加熱 器片及如裝在電池盒部24,26內之電池(未顯示)的電源之間 的電氣連接。第4-7圖之細部圖顯示裝在加熱器單元連接器 56之隔板40,而一般裝設在隔板40內之加熱器單元30則 沒有被顯示。 例如當香煙被夾在吸煙裝置內且裝置被到處移動、但是吸 煙者並未在香煙上抽吸之時,圍繞吸煙裝置200之周遭空氣 可自由地在由周圍通道42所形成的旁通流動通道內流動, 並且在外長孔23, 25中進出。 當香煙被插入加熱器箱蓋20之開口 18'及加熱器單元30 之開口 3 0 a內、且吸煙者在香煙上抽吸之時,可形成吸入力 而將周遭空氣從圓周旁通流動通道42拉入流動轉向通道44 中,空氣流動必須從圓周方向改變到沿著軸心方向及徑向往 內之方向,如第4,5及7圖所示,其中空氣流動係以箭頭,A, -15- 1306392 表示。藉由吸煙者在香煙上抽吸形成的壓力降,可造成空氣 從旁通流動通道4 2流入流動轉向通道44 ,並且進入由圓 周溝部形成於加熱器單元30之外側及隔板40的內周之吸入 流動通道32中,如第3A及3B圖所示。被吸入該吸入流動 通道32中之空氣可通過圓周溝部32之對向端處的徑向孔 34a,34b ’並且與放置於加熱器單元30內的香煙接觸。空氣 必須遵循從旁通流動通道42移動到流動轉向通道44之方向 的改變,可確保空氣僅在藉由吸煙者在被夾在吸煙裝置內的 香煙上抽吸所造成的吸入之時流過此路徑。通過吸煙裝置的 流動通道之另一配置可包括有T型檔板,其可將周遭空氣引 導到僅在當吸煙者在香煙上抽吸之時與香煙接觸。 一感測器’如微電子加工之流動感測器可被設置在流動轉 向通道44內’並且安裝在印刷電路板60上。此感測器最好 爲一流動感測器,其可偵測任何通過流動轉向通道44之氣 流。使用於流動轉向通道中用以偵測吸煙者之抽吸之感測器 之一個例子爲雙熱風速計(dual thermal anemometer),其 可使用微電子加工原理技術而製造。雙熱風速計係根據差電 壓' 差電流、或差溫度之原理。空氣通過此裝置之流動產生 該裝置中兩個電力元件之加熱差異,其接著形成元件之間的 電壓、電流、電阻或溫度差異。雙熱風速計內之元件可間接 地被分開之加熱元件所加熱’加熱元件一般係裝設於感測元 件之間且靠近這些元件。其它之流動感測器可包括有一葉片 風速計(vane anemometer),其具有一可計數葉片旋轉且輸 送一脈衝序列的近端開關’脈衝序列可由測量儀器轉變成流 一 1 6 - 1306392 量。葉片風速計之例子包括槳輪式風速計 (paddlewheel-type anemometer)、杯式風速計(cup anemometer)、或螺旋槳式風速計(propellor-type a n e m 〇 m e t e r )。使用微電子加工原理技術而製造的流動感測 器可做成很小的尺寸,其可減少整個吸煙裝置的尺寸,並且 改善感測器的反應時間。最好感測器爲可偵測流動者,例如 微電子加工風速計,因爲其不須要偵測壓力差,因而當吸煙 者在裝設於裝置內的香煙上抽吸時,可維持吸煙裝置抽吸時 之低阻抗。微電子加工流動感測器亦可提供很快的反應時間 ’使抽吸的偵測與設置在裝置內之香煙的加熱之間的時間可 被減少到一位準,其與吸煙者抽吸一支傳統香煙的感受比較 時係有優勢者。微電子加工流動感測器亦可使吸煙裝置的尺 寸減少,因爲安裝感測器的轉向通道之尺寸可保持很小之故 〇 減少抽吸的偵測與設置在裝置內之香煙的加熱之間的時 間之另一個優點爲,造成煙草產品暴露於熱之抽吸期間的時 間長度增加。從而,對一通常吸煙者在香煙上抽吸之給定長 度之時間而言,較大部分該時間係包括熱被施加到煙草產品 、及最後提供吸煙者所喜歡的氣味及香味之氣溶膠及總微粒 的生成物之產生。 在附圖顯示的實施例中,在空氣從形成在隔板4 0外側周 圍的旁通流動通道通過流動轉向通道44而沿軸向地向下及 徑向地向內被轉向之後,到達通到香煙的吸入流動通道3 2 。普通技術人員將可認知,此流動通道之正確配置可視吸煙 1306392 裝置內許多元件的結構而改變。主要的需求係,安裝有流動 感測器的通道係與氣流旁通道隔開,氣流旁通道藉由某種氣 流轉向通道或機械式檔板與外部的周圍空氣直接相通,這確 保空氣在當吸煙者於夾在吸煙裝置內的香煙上抽吸時只流 過吸入流動通道。由於此結構,可避免僅由裝置的移動產生 之錯誤信號,並且不再需要電子電路以過濾這些錯誤信號。 局部顯示於第8圖之電氣加熱吸煙系統之另一實施例中, 抽吸感測室1 3 2可被形成一中心軸朝香煙1 5之中心軸成平 行之多歧管140內之環狀通道》圓柱形之多歧管配置140可 與點火器300之一端配合及結合,使得當香煙通過多歧管配 置1 40被插入點火器3 00之時,香煙之濾嘴端係由形成於多 歧管配置1 4 0之內的抽吸感測室丨3 2圍住。多歧管配置亦可 與點火器一體形成。 香煙15與形成於多歧管配置140之內的抽吸感測室132 抵接之一部分可包含有許多開口、孔或細孔17,以便香煙被 抽吸時在香煙內部所產生的壓力變化更容易且直接地被感 測。細孔17可預先在香煙15中形成,或者可由在電氣吸煙 裝置中的刺穿工具所形成。香煙1 5之濾嘴端周圍之多歧管 配置140亦可包含有通道,其可將周遭空氣流基本上無拘束 地引導到點火器3 00中之內通道,其通到與包住香煙1 5之 煙草部的香煙紙接觸之加熱器元件1 3 0。一分開的通道1 3 1 從抽吸感測器1 46 (真空感測器)通到香煙之濾嘴端周圍的抽 吸感測室1 3 2。因爲在香煙中仍有真空形成,根據本發明此 實施例之構造提供用來感測在香煙中所形成真空,其中在香 -18- 1306392 煙附近壓力降爲最大。此配置可使點火器更快速地反應及/ 或減少真空感測系統所需之精細度。 雖然本發明在此係以上述之實施例而敘述,但是很明顯地 熟於此技術者可從事許多選擇方案、修正及改變。從而,在 不違離申請專利範圍所設定之本發明精神及範圍之下,可做 成本發明之實施例及修正及改變。 (五)圖式簡單說明 本發明之許多較佳特徵及優點可由上述之詳細說明、參照 其附圖而清楚地了解,其中每個特定參考符號在本說明書中 一貫地係指特定零件。下列圖中: 第1圖係根據本發明實施例之電氣加熱吸煙系統之立體圖 第2圖係第1圖所示之電氣加熱吸煙系統的立體分解圖; 第3A及3B圖係根據本發明實施例之電氣加熱吸煙系統的 加熱器外殻蓋及加熱器外殼之兩個立體圖; 第4圖係根據本發明實施例之電氣加熱吸煙系統之隔板及 加熱器單元連接器之立體圖; 第5圖係第4圖之隔板及加熱器單元連接器的另一立體圖 » 第6圖係第4及5圖所示之隔板及加熱器單元連接器的另 —立體圖; 第7圖係第4,5及6圖所示之隔板及加熱器單元連接器的 一部分之放大立體圖; 第8圖係具有形成圍繞於插入之香煙之濾嘴部分之感測室 -19- 1306392 的電氣加熱吸煙系統之橫剖面圖。 元件符號說明 15 香煙 17 細孔 18 開口 20 加熱器箱蓋 22 前外殻 23,25 長孔 24 ,26 電池盒部 30 加熱器單元 30a 頂部開口 32 吸入流動通道 34a,34b 徑向孔 40 隔板 42 周圍通道 44 流動轉向通道 52,54 內殼構件 56 加熱器單元連接器 60 印刷電路板 130 加熱器元件 13 1 通道 132 抽吸感測室 140 多歧管 146 抽吸感測器
-20- 1306392 200 電氣加熱吸煙裝置 300 點火器

Claims (1)

  1. 1306392 第92131225號「具有用於抽煙偵測的內部歧管之電氣加熱 吸煙系統」專利案 (2008年4月修正) 拾、申請專利範圍: 1.一種電氣加熱吸煙系統,其包括有: 一加熱器單元, 該加熱器單元具有用來容納香煙的一端之開口,並且該 加熱器單元可將熱施加於該香煙的一部分;
    該加熱器單元形成至少吸入流動通道之局部,當吸煙者 在定位於加熱器單元的香煙上抽吸之時,周遭空氣經由流 動通道被抽入而與香煙接觸; 一外殼,其被設計成可被吸煙者握住; 一隔板,其將該加熱器單元相對於外殼定位,並且至少 局部地形成一與圍住於外殼周圍的周遭空氣流體相通之 旁通流動通道,該隔板又形成一從該旁通流動通道通到吸 入流動通道的流動轉向通道,當吸煙者在插入於加熱器單 元開口中的香煙上抽吸之時,周遭空氣從旁通流動通道經 φ 由流動轉向通道被抽入;及 —感測器,其可操作以偵測在該流動轉向通道中之空氣 流動,並且輸出一吸煙者在香煙上進行抽吸之信號指示。 2 .如申請專利範圍第1項之電氣加熱吸煙系統,其又包括有 電子電路,用以在接收來自感測器的信號之時作動該加熱 器單元。 1306392 柒、指定代表圖: (一) 本案指定代表圖為:第(1 )圖。 (二) 本代表圖之元件代表符號簡單說明: 18 開口 20 加熱器箱蓋 22 前外殼 23,25 長孑L 24,26 電池盒部 200 電氣加熱吸煙裝置 捌、本案若有化學式時,請揭示最能顯示發明特徵的化學式:
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