TW482877B - Screw machine - Google Patents

Screw machine Download PDF

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Publication number
TW482877B
TW482877B TW089125486A TW89125486A TW482877B TW 482877 B TW482877 B TW 482877B TW 089125486 A TW089125486 A TW 089125486A TW 89125486 A TW89125486 A TW 89125486A TW 482877 B TW482877 B TW 482877B
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TW
Taiwan
Prior art keywords
rotor
screw press
separated
rotors
outermost surface
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Application number
TW089125486A
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English (en)
Inventor
Alexander Lifson
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Carrier Corp
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Publication of TW482877B publication Critical patent/TW482877B/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00Sealing arrangements in rotary-piston machines or engines
    • F01C19/08Axially-movable sealings for working fluids
    • F01C19/085Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or engines, e.g. gear machines or engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/08Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082Details specially related to intermeshing engagement type machines or engines
    • F01C1/084Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/08Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082Details specially related to intermeshing engagement type machines or engines
    • F01C1/086Carter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/08Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/16Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Feeding Of Workpieces (AREA)

Description

482877 五、發明說明(1) 在一傳統式螺旋壓機中,一配列於界定一 個別對置部分重疊心孔中之公轉子及一母鍾^子框體内之 以截辑月轉 母轉子,共用作用 a叶&沙 大量氣體。雖然此種雙轉子形態為最普遍之 ΐλ個技術中已知之螺旋壓機,具有三個或更多之 之公及母轉^重豐=孔中之轉子,俾成對相互作用。成對 链如,具有不同之輪葉外形及輪葉及溝槽數量。 i接人?子可能具有六個被六個溝槽分開之輪葉,而成 此,i i么轉子可能具有五個被五個溝槽分開之輪葉。因 :種可能之共同作用於轉子間之輪葉及組合,均 」月b在一循環基礎下產生。 同3壓機之轉子,安裝於每-端之承轴上,用以 在轉+二仏向及軸向繫留。雖然如此,在傳統式練習中, 由J氣二二提,一末端運轉間隙之需主要導因於轉子 期盼一壓縮過?中生熱而導致之熱成長之故。保持 外層表面=轉間隙1足以確保不會在轉子端面及框體最 外,觸,對可靠操作螺旋壓機甚為重要。此 -軸向中,在被壓縮流體中之壓力梯|,通常在 吸入端轉子"L,其傾向將轉子推向螺旋壓機之 鳊,因而傾向於增大末端運轉間隙。 低螺旋壓機之總效率。在傳统之;^隙,因而嚴重地降 牡得,、死之成油式螺旋壓機中,通常
第4頁 緣ϊίί 可能造成i缩流體過多地經周 五、發明說明(2) _ t、油至由轉子端面及框 面區域而做為一提供、、☆:板間之末端運轉間隙界定之介 介面區域。然而者體铪封之裝置,俾減少氣體之漏入 轉子端面及框體;板;::間隙減小時,效率耗損將由於 大。 心板間油料内之黏度磨擦力而傾向於加 如上所述在操作過程中, 受熱之熱成長,轉子在細^由於導因於流體在壓縮過程中 增大。轉子之此一埶成11方向向框體排放端之末端外殼 在操作過程中,前:軸向'麼3運轉間隙。然而 子推向螺旋壓機之吸入總,力梯度傾向在一軸向方向將轉 因此,在傳統之溢油式螺,而傾向增加末端運轉間隙。 量之末端運轉間隙以減小磨中二常維持-相當數 長之故。同樣地當=广縮過程中之熱成 外:持;轉間隙之罰則,為持續增加 較大之末端運轉間=專=油式螺旋塵縮機中維持 質障礙至周遭之氣體外漏。孽如,已,2面以提供實 端面,俾徑向地沿著轉子輪葉或刀鋒背::棒:焊至轉子 而伸越且橋接末端運轉間隙之相當部位。中、線延伸’因 曼Jg總論 本發明一目標為改進一螺旋壓機内 本發明另一目標為減少一螺旋壓機内之 端運轉間 4828// 五、發明說明(3) 隙之外漏 在本發明之螺旋壓機中,壓縮 螺旋壓 運轉間隙…’可藉由針對外漏氣、體在末端運轉 提供持續之膨脹及收縮路徑而減少。纟本發明—實例二内 轉子端面表面及/或框體端板最外層表面,包含由呈蜂 型式之個別凹壁結構分開之小隔離凹穴表面,該蜂巢型式 係由網狀之互連壁面構件分開。在橫向移過諸如表面時, 外漏氣體在當其通過凹穴及凹壁時,必須重覆地膨脹及收 縮’此即一用以減少流動外漏之過程。不^專统式僅在一 f方向提供密封且經由由曲徑密封形成之溝槽而可實際造 ^周邊外漏增加之曲徑密封,本蜂巢型式之結構表面 %針對徑向及周邊氣體外漏,提供有效密封。 本發明對以較少量循環油操作螺旋壓機特別重要◊在 ^機中’由於不足量之油料㈣外漏路徑之&,因此更 難以獲得良好之外漏控制。 現在宜參考下面各種實例之詳 、、,田呪明及參考附圖,其中: 圖1為一螺旋壓機之橫向斷面圖; 圖2為圖1中螺旋壓機之部分斷面圖; 圖3為圖1中螺旋壓機部分排放端之放大圖; 圖4為圖3中沿4_4連線所取之轉子端視圖, 知面實例; W 丁 圖5為蜂巢式表面結構特定實例之放大圖;以及
第6頁 482877 五、發明說明(4) 圖6為圖3中沿6 - 6連線所取之框體端板端視圖,顯示本 發明之一變通實例。 I佳實例說明 現在參考圖1 ’說明一諸如一螺旋壓縮機之螺旋壓機 1 〇,具有一其内配置一對部分重疊心孔丨3及丨5之轉子框體 或外殼1 2。母轉子1 4設置於心孔丨3内,而公轉子丨6設置於 心孔15内。心孔13及15 —般分別沿著平行軸a及b延伸。 在圖示實例中,母轉子Γ4具有六片被六個溝槽分開之輪 葉14A,而公轉子16具有五片被五個溝槽分開之輪葉16八。 任一母轉子14或公轉子16可與主移動件(未圖示)連接而作 用為驅動轉子。亦可採用其他數量之母及公輪葉及溝槽組 合。 一現在參考圖2及3,轉子14具有一軸桿部位23,其配置一 徑向伸出軸桿部位23而成形於轉子14末端上之端面24。 子14軸桿部位23藉由-個或多個軸承3〇支撐 【。同樣地,轉子具有—軸桿部位25,其配置 4出軸桿部位26而成形於轉子16末端上之端面26。轉子16 部位25,藉由-個或多個轴承31支撐於出口外抓 動軸』L子31』吸入側軸桿部位27及29,分別被滾 動=承32及33支撐承置於轉子框體12内。 當操作諸如一電冰箱壓縮機 時,轉子16轉動接合轉子14且使ίςς轉=f驅動轉子 及Η内之旋轉轉子14及16之共轉;^列個別心孔 束氣體抽人轉子16及14溝槽,、^且口 18將冷 一戳後且反縮大1氣體,同
第7頁 482877 五、發明說明(5) k輸送熱壓縮氣體至排放口 1 9。針對前面討論過之理 必須分別在轉子丨4及1 6排放端之端面2 4及2 6以及出口’ 53端板55之最外層表面51之間,維持一末端運轉間喊 此一末端運轉間隙60,界定為轉子端面24及26之最接〇 ° 面表面及端板55最外層表面51間之區域。此一末 ,介 隙60在轉子端面24及26與出口外殼53端板55間,同日士t間 -周邊及徑向 <潛在氣體外漏路徑。纟傳統之溢 機中,自然流入末端運轉間隙6 〇内之潤滑油,可作鈿 密封而減少氣體經由末端運轉間隙外漏。 為一 在本發明螺旋壓機中,壓縮空氣經由一螺旋壓縮 運,間隙之外㉟,可藉由提供一迂迴外漏路徑而減:末: 持續之膨脹及收縮產生於末端運轉間隙内。在本發 〃 所示之實例中,轉子端面24及26表面包含一蜂巢式圖4 65。如圖5所述,表面65包含多數個被個別凹壁構\ \面八 ^ ^較f分離式凹穴70。在橫越末端運轉間隙6 G時,外刀漏 =體必須通過轉子端面24及26上之蜂巢式表面65。如^ 後,外漏氣體流在當其通過凹穴及凹壁時,不斷地膨 收縮’此即用以減少外漏流動之過程。 又 f本發明之圖6所示實例中’出口外殼53端板55上之 :卜層表面51,包含-蜂巢式表面65,其如圖5所述包 數個被個別凹壁構件80分開之較小分離式凹穴7〇。在 末端運轉間隙60中’外漏氣體必須通過出口外殼53端板55 上最外層表面51上之蜂巢式表面65。如此之後,外漏氣體 流在當其通過凹穴70及凹壁構件80時,不斷地膨脹及收 482877 五、發明說明(6) 縮,此即用以減少外漏流動之過程。 不似傳統式僅在一方向提供密封之曲徑密封,蜂巢式凹 穴結構表面同時針對徑向及周邊之氣體外漏,提供有效之 密封。宜了解蜂巢式結構代表多數個被網狀互連壁面結構 8 0分開之分離式開口凹穴7 0。凹穴實際上不必然好似與蜂 巢相關之六角型式小室。凹穴7 0開口區域之深度、形狀以 及大小,對本發明均不重要,重要者為設計選擇。
雖然本發明已藉由雙轉子式螺旋壓機特別圖示及說明, 但亦可應用採用三個或更多轉子之螺旋壓機。因此,本發 明僅欲受限於隨附申請專利範圍之範疇内。
第9頁

Claims (1)

  1. 482877 六、申請專利範圍 1. 一種螺旋壓機,包含一界定至少一對平行、部分重疊 心孔之框體、一具有最外層表面之出口外殼、以及一置於 該至少一對心孔内之配合成對之相互嚙合轉子,每一該轉 子具有一端面,該轉子端面與出口外殼之該最外層表面分 隔,同時與其界定一末端運轉間隙;其特徵為至少任一該 轉子端面之表面或出口外殼之該最外層表面,包含多數個 被一網狀互連壁面構件分開之分離式凹穴。
    2 ·根據申請專利範圍第Γ項之螺旋壓機,其中該多數個 被一網狀互連壁面構件分開之分離式凹穴,成形於每一該 轉子端面上。 3.根據申請專利範圍第1項之螺旋壓機,其中該多數個 被一網狀互連壁面構件分開之分離式凹穴,成形於出口外 殼之最外層表面上。
    第10頁
TW089125486A 1999-12-20 2000-11-30 Screw machine TW482877B (en)

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US09/467,266 US6290480B1 (en) 1999-12-20 1999-12-20 Screw machine

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US (1) US6290480B1 (zh)
EP (1) EP1111187A3 (zh)
JP (1) JP2001193678A (zh)
KR (1) KR100378933B1 (zh)
CN (1) CN1121556C (zh)
AU (1) AU744102B2 (zh)
BR (1) BR0005950B1 (zh)
TW (1) TW482877B (zh)

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CN1300904A (zh) 2001-06-27
BR0005950A (pt) 2001-07-17
EP1111187A2 (en) 2001-06-27
KR20010067412A (ko) 2001-07-12
AU744102B2 (en) 2002-02-14
EP1111187A3 (en) 2002-05-02
BR0005950B1 (pt) 2008-11-18
JP2001193678A (ja) 2001-07-17
KR100378933B1 (ko) 2003-04-08
AU7234200A (en) 2001-06-21
CN1121556C (zh) 2003-09-17
US6290480B1 (en) 2001-09-18

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