200848602 九、發明說明： 【發明所屬之技術領域】 本發明涉及安裝在内燃機排氣管的端部或者鍋爐通風 筒（或烟筒）端部的消除背壓（啊）且防止逆流的求 置’尤其涉及這樣-種消除背壓防止逆流的裝置，觀置消除排 氣阻力和排氣逆流，以便順_排出為了使内燃機或崎等進行 r 運作而燃燒燃料所產生的廢氣’從而可以提高内燃機或銷爐_ 燒效率。 ’' 【先前技術】 一般情況下’作為在__燃燒的污_質的廢氣大致以 的壓力和峨左右的高溫、高壓被排出，因此，必缺 安裝有催化裝置和消音器。 w 在排出上述内燃機内燃燒的廢氣時，在排氣支管（manif〇⑷ 内形成真空’且形成妨礙廢氣排出的—次排氣阻力，在通過三元 催化劑的蜂窩式淨化器時，廢氣的流速顯著下降，從而形成二-欠 排氣阻力，在流人消音器時，繞行形成為多段狀的間隔件而排出， 幵> 成二次排氣阻力。 所述的廢氣排出的過程中，消音器的容積—般 的&2G倍左右，從而-定產生排氣阻力，由此^ 峨，崎蝴谓、約5-卿軸料消耗增 6 200848602 加以及污染物增加等問題。 從而，可以僅通過順利地排出廢氣，來提高燃燒效率，從而 可以改善燃料的消耗、提高動能和熱能，在這樣的背景下，公開 有多種技術。 鍋爐的情況也相同，在通風筒上吹著逆風時，外部空氣逆流， (風進入到燃燒室内部，從而引起不完全燃燒，燃燒時產生的蒸汽 和氮化物的懸浮物_在熱交換器的表面上，重複出現該情況， 攸而發生熱父換的性能下降以及熱能下降的問題，因此，為了 解決該問題，進行著各種研究。 專利公開公報第雇-56951號公開了 _空⑽動的汽車排 氣筒’該技術汽車行驶中引起的空氣的流動，將流線型的排 軋口主體安裝在魏尾管（tall pipe)上，轉流财線型主體 的空氣的流速’形成低壓區域，由於該低壓，廢氣被急速吸出， t排氣。但是’從結構上看，將這樣的流線型的排氣口主體安 衣/飞車上，使得結構較為龐大且複雜，從而不易商業化。 裝置翻Γ鮮1998—75223射娜邮域流產生 （ eneer)的排氣尾管，在排氣尾管的中， 置渴流用⑼’使葉片通過廢氣 ㈣間叹 同時產生触，從而進行納y /轉⑼通過廢氣旋轉的 mu反峨 7 200848602 動的阻力’且由於熱量，使得結構變形，從而存在實質上不易解 決的問題。 專利授權公報第257874號公開的利用滿流的廢氣排出裝置 中’形成在廢氣歧上的消音H的前端均加設置有使外部空氣 流入的管道，在該管道上内設有將流人的外部氣體形成為渦流的 葉片’並且形成用於外部氣體流人的板（damper)，以與 節流閥的打開程度相—致。 、 但疋，向廢氣通道供給献，且在用於消除排氣噪音的消音 器的前端上形成使得外部氣體流通的子排泄管（subduct),因此 排㈣音通過該子排岭排出，㈣噪音較大，並且由於設置與 汽管的節流閥聯動的用於調節外部氣體的調節板，因此，使得裝 置的結構和設施變得複雜。 …亚且’在中魏為2()—_194號中請中，彙集隨著汽車行歇 形成的空氣的_，形賴流，形成多個流人孔，在外部氣體流 形成鐵片和板材的板牙（screw 攸），且内設固定在排氣 C7中。 *但是’在張_°椒管上通過鐵姊板牙形成献，通過較 乍的職’因此使得結構不夠歡，產生職阻力和逆 氣流，且在消音H料部上魅噪音功率。 8 200848602 費率==:==„和燃料消 而高速練畴在在端部上產生辨果微小’ 【發明内容】 為了解決上述問題，本發明採用 且具有除去觀阻力、減少奴狀排姊構原理， 為了解決上述問題，本發明的目的在於提供—種消除背壓防 止逆流_，該裝_ 了物峨或者峨進行運作 _職的f體向外排出時，除去本質上產生的排氣阻力和ς :机以及大减力，·排出廢氣，從而可以提高嶋:機或者 銷爐的燃燒效率。 置 孓的另個目的在於提供一種消除背壓防止逆流的穿 ，該裝置在不改變内燃機的排氣管或者鋪的通風筒的端部二 構的情況下，可以進行簡單裝卸。 、、° 用於實現上述目的且解決現有技射存在的問題的本發明的 ^徵，於包括.固《官葉片112，其具有可以插人從_機延伸的 ^管1G或者峨的通風筒端部的結構，其一部分比排氣管端部 更加朝外突出從而形成排出廢氣的第-通道W1，上述第-通道W1 具有沿排出廢氣的方向面積越小㈣-文丘裡結構V1 ;固定管 ^其述_葉片112 ’且上述__比上述固 b葉片112更加朝外突出，並且形成第二通道舵，以使經由上 200848602 述固定管葉片112的 呢具有沿排出参、—通這W1的廢氣再次通過，上述第二通道 固定管110的C方向面積越小的第二文丘裡結構V2 ;在上述 沿著圓周形成多_#、、“ 運接的的彳日疋位置， 設置在固定管11Q sW σ 111，以及二重排氣们20，連接 二重排氣管與上_==上述_110 _则，且在 的第三通道W3 s之間留有空隙來形成吸入排氣逆流 文丘減構=第三通道W3形成有越往裡面積越減少的第三 排氣上述固定管葉片112的直徑大於 筒的社槿㈣ n H便在錢變錢管10或者通風 片1。構的情況下’可叫單地插人安裝，並且在上述固定管草 2筒内部具有多個加麼部113，以便強行插入安裝排氣管10或者 ==的特徵在於，與上述二重排氣管相隔_定間隔 ^置二重排《咖，以職上述二重排氣管的周圍上述三重 乳管130連接在固定管葉片⑴的突出部分的相反側。 而且’本發明的特徵在於，上述固定管葉片112的端部的直 徑D2大於或等於固定管110的端部的直徑m。 並且，本發明的特徵在於，其包括：固定管葉片出，其具有 10 200848602 延伸出的排氣㈣或者通風筒的結構，其一部 =r㈣斷加料設置，物峨的第 ^’固疋管m，其包圍上述固定管葉請；上述固定管⑽ 的端部向比上述_葉片112更加铸突出，形成錢由上述 的第一通道的廢氣再次通過的第二通道;以及二 他〜^二 0内部（與固定管葉片連接的位置） 曰疋H者0周方向形成多_定管流細⑴，連接設置 更包圍上述固定管11〇的外側周圍，咖^ 疋吕之間留有空縣形朗於吸人職逆流料三通道。 内燃止逆流的裝置安裝械 和大氣阻力，间同的端部，通過降低排氣阻力 爐的燃燒效率’從而’提高了内燃機或者銷 產生。 祉全燃燒姑的燃料消耗以及有害物質的 【實施方式】 下面，參照本發明的優選實施例和附圖，詳細說明本發明。 在說明本發明的過程中，對有關公知常識或者結構的具體說明使 本發明的要料清楚時，省略其詳細的說明。 圖1是根據本發明的優選實施例的消除#壓防止逆流的襄置 的立體圖’圖2是沿圖丨的Α_Α'線喊取後錄其中—部分後的 體圖圖3疋沿圖i的Α_Α線截取的截面圖，圖4是圖i的後 200848602 視圖。爹關1至圖4，根據本發明優選實施綱消除背壓防止逆 流的裝置1GG包括固定管m、固定管葉片112、二重排氣管12〇、 以及三重排氣管130。固定管11G、固定管葉片112、二重排氣管 120以及一重排氣官13〇分別具有不同的直徑，在固定管HQ的 外側設置#二重魏管跡賴定管11G的關設置有固定管葉 片112 ’在一重排氣管12〇的外側設置有三重排氣管13〇，下面詳 細說明每一個的結構。 上述的固疋官葉片112設置在從内燃機延伸的排氣管10或者 銷爐的通風筒上，與上述排氣f 1G或者通風筒_部相比，固定 f葉片更加犬出’形成排出廢氣的第—通道，且具有第一文丘 裡（ventur i)結構V卜該第一文丘裡結構越接近排出廢氣的端部， 通道的面積越減少。具有上述結構的固定管葉片ιΐ2越靠近第一 通運W1的面積減少的端部，廢氣的流速越增加，通過降低排氣阻 力和大氣阻力，細可以财且糊地排出廢氣。 另一方面，上述固定管葉片112的直徑大於排氣管10或者通 風筒的直徑’以便在不改變排氣管或者通風筒的結構的情況下 可以通過插人連接進行設置，且在内部具有多個加壓部113，以便 強行插入連接排氣㈣或者通風筒。上述加㈣ιΐ3以一定的間 =固_片__形成，在連_管葉請和排 孔s 10或者固“茱片112和通風筒時，固定管葉片緊貼在排氣 200848602 管或通顺上，從啼翻絲軸112的牢固結合。 這時，用於更加牢固地安袭 _謂形成在·氣管二栓b ^ 1〇π ^ υ的才日疋位置上（未設置有三 重排軋官130 4，連接孔形成在-會 接孔1切奸入沾门 職—重排軋官120上），經由上述連 插入的固定用螺栓β連接在排氣管Η)或者通簡上，從 而防止固定管葉片112的脫離。 氣乳问上伙 管m圍繞上述_葉謂的同時 的外側突出，且形成有第二通道w 疋管茶片112的第—糊的廢氣再次通過，並且形成有第二文 丘裡結構V2 ’該結構朝廢氣排出的方向，上述第二通㈣的面積 逐漸減少。 、 這時，固定管葉片112的端部的直徑的大於固定管11〇端部 直徑D1，這是為了使通_定管HG形成的第二通道？2的流速大 义葉片112形成的第一通道…的流速，迅速地將廢氣 "卜排出#於具有上述的結構，通過形成在固定管葉和 口定g 110上的第一文丘裡和第二文丘裡迅速地將廢氣排到外部。 上述—重排氣管丨20用於形成使逆流的廢氣流入的第三通道 W3連接设置在固定管11〇上，以便圍繞固定管的外姻圍， 並且，形成有第三文丘裡結構V3，該結構越朝裡面方向（即，排 13 200848602 氣g ίο的方向第二相:W3的_越減少，以便逆流的廢氣（下 面稱為“排氣逆流，，）更加·的流人。之所以設計成上述的第 三文丘裡是由於排氣逆流主要沿著二重排氣管12〇的内侧壁發 生’因此，為了迅速的排出魏而具有上述結構。 …上述固定管110的裡面（與固定管葉片ιΐ2連接的部分）的 才曰疋位置上，沿著周緣部形成有多細定管流動口⑴，其用於形 (成將沿著二重排氣管120的外壁逆流的廢氣（即，“排氣逆流，，） 也向外排出的通這，從^魏逆流通過峡管流動口 HI朝 g 1〇的内部流動’最終與被排出的廢氣一同迅速地被排到 外部。 :麵氣管13G與上述二重排氣管具有—㈣隔，且圍繞二 重〜的周圍’上述二重排氣管13〇與固定管葉片⑴的突出 部分的相對側相連接。 具有上述結構的肖除背壓防止逆流的裝置⑽可適於設置在 内燃機的排氣管端部或者纖通風筒的端部上。 μ Γ轉本發明的雜f壓防止逆流的装置安裝在内燃機 ¥孔 廢乳和排氣逆流的流動喊面圖。如圖5所示，使 内燃機進行運作蝴魏料產生的純触魏管1G和固定管葉 片112排出’廢氣G1經由通過蚊管葉片112形成的第一文丘裡 14 200848602 結構V1區断物㈣_如_的排出廢氣。 u〇=面^上_管葉片112排出的廢氣經由固定管 在固—Κ) Γ經由固定管UG的端部的廢氣G2在經由形成 在固心m的端部的第二文丘裡結構V2區域時流速進一步择 加，迅速地向外部排到。 曰 f μ 氣時’廢氣的—部分必然、會逆流，從而 產生排㈣流，，，㈣通過：峨管i2Q形成的第三文丘 裡結構^產生的峨者真空，如上述形成的排氣逆流⑽ 著二重排氣管m的内壁迅速地向内部移動。這樣移動的排氣逆 流G3由於在晴葉請和固定管11G之間產生的低壓或者直 空’而通過樹曙町_σ lu職固定管⑽ 的内部流動G4,從而，谁人11Λ 产 進入固疋官110内部的排氣逆流最終與廢 氣一同迅速地向外部排出。 x 如上所述’本發明通過基於固定管葉片112的第一文丘裡姓 構vi、基於固定管m的第二文丘裡結構V2和基於二重排氣料 第三文丘裡結構Μ更有效地翻廢氣，減逆流在沿著二重排氣 管的内壁移_途帽顧定管流細⑴再次進人固定管内部 之後’再排到外部，從而可以防止排氣逆流，提高内燃機或者銷 爐的燃燒效率。 15 200848602 本發明並稀定於上述的魏實施例，在錢離請求保護的 範圍的本發_要旨的情況下，本領域技術人員可以有多種變形 實施例，並且這樣的變形實施例均屬於要求保護的範圍内。 广如上所述，本發明消除了廢氣的排氣阻力和排氣逆流，降低 大氣阻力，從而可以實現由浦機和纖的峨效率的提高而引 起的燃料消費率的改善和煙塵的降低、卓越的運轉性能以及使得 動能和熱能極大化。 並且，在不改變内燃機排氣管端部或者麵通風筒端部的結 構的情況下，可以簡單的進行安裝，從而提高了與多種裝置之間 的互換性。 3 【圖式簡單說明】 圖1是根據本發明優選實施例的消除背壓防止逆流的裝置的 立體圖； 圖2是沿圖1的線A_r截取後除去其中—部分的立體圖 圖3是沿圖1的線a—a -的截面圖； 圖4是圖1的後視圖； 燃機 H是根據本發明的消除背壓防止逆流的裝置安裝在内 排乳管中時的廢氣和排氣的逆流的流朗截面圖。 16 200848602 【主要元件符號說明】 G1廢氣 G2廢氣 G3排氣逆流 G4内部流動 VI第一文丘裡結構 V2第二文丘裡結構 V3第三文丘裡結構 W1第一通道 W2 第二通道 W3第三通道 10排氣管 100消除背壓防止逆流的裝置 110固定管 17 200848602 111固定管流動口 112固定管葉片 113加壓部 120二重排氣管 130三重排氣管 132連接孔200848602 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to the elimination of back pressure (ah) installed at the end of an exhaust pipe of an internal combustion engine or at the end of a boiler ventilator (or a chimney) and prevents the countercurrent from being sought. The present invention relates to a device for eliminating back pressure to prevent backflow, and to eliminate exhaust gas resistance and exhaust gas reverse flow, so as to exhaust the exhaust gas generated by burning fuel in order to operate the internal combustion engine or the like, thereby improving the internal combustion engine or the pin. Furnace _ burning efficiency. [Prior Art] In general, the exhaust gas is discharged at approximately the pressure of the exhaust gas of the __ combustion and the high temperature and high pressure of the exhaust gas. Therefore, the catalytic device and the muffler are indispensable. w When exhausting the exhaust gas burned in the internal combustion engine, a vacuum is formed in the exhaust manifold (manif〇(4) and a secondary exhaust resistance is formed which hinders the exhaust gas discharge, and the flow rate of the exhaust gas when passing through the three-way catalyst honeycomb purifier Significantly descending, thereby forming a two-under-exhaust resistance, which is discharged as a multi-segmented spacer when flowing through a muffler, and 成> becomes a secondary exhaust resistance. In the process of exhausting the exhaust gas, The volume of the silencer is about 2G times, so that the exhaust resistance is generated, and thus, the problem is that the consumption of the 5-axis material is increased, and the increase in pollutants is increased. In this context, a variety of techniques can be disclosed by improving the combustion efficiency by simply exhausting the exhaust gas, thereby improving fuel consumption and improving kinetic energy and thermal energy. The same applies to the boiler, when the ventilator is blown against the wind. The external air flows countercurrently (the wind enters the inside of the combustion chamber, causing incomplete combustion, and the vapor and nitride suspended matter generated during combustion _ repeats on the surface of the heat exchanger In this case, there is a problem that the performance of the hot parent change is degraded and the heat energy is lowered. Therefore, in order to solve the problem, various studies have been conducted. Patent Publication No. -56951 discloses an empty (10) moving automobile exhaust pipe. 'The flow of air caused by the driving of the technology car installs the main body of the streamlined rolling port on the tall pipe, and the flow velocity of the air flowing through the main body of the wire-line forms a low-pressure region, due to the low pressure, the exhaust gas is Quickly sucking out, t exhausting. But 'from the structural point of view, the body of such a streamlined exhaust port is attached/flying, making the structure relatively large and complicated, so that it is not easy to commercialize. Na's postal flow generation (eneer) exhaust tail pipe, in the exhaust tail pipe, thirsty flow (9) 'make the blade through the exhaust gas (four) sigh at the same time to produce a touch, thereby performing nano y / turn (9) through the exhaust gas rotating mu峨7 200848602 Dynamic resistance 'and the structure is deformed due to heat, so there is a problem that is not easy to solve. Patent No. 257874 In the apparatus, the front end of the muffling H formed on the exhaust gas is provided with a pipe for allowing outside air to flow therein, and a blade for forming an external air of the flow person into a vortex is provided in the pipe and formed for external gas flow The damper of the person is in agreement with the degree of opening of the throttle valve. However, the damper is supplied to the exhaust passage, and a submerged gas is formed on the front end of the muffler for eliminating exhaust noise. a subduct, so that the row (four) sound is discharged through the sub-row ridge, (iv) the noise is large, and the adjustment plate for adjusting the external gas is provided in conjunction with the throttle valve of the steam pipe, thereby making the structure of the device and The facility has become complicated. ... and Ya's in the middle of the Wei 2 () - _194, in the collection of the air formed by the car break, the shape of the flow, forming a plurality of flow holes, in the external gas flow A die and a plate die are formed, and the built-in is fixed in the exhaust gas C7. *But's formed on the _° pepper tube through the shovel die, through the more ruthless job', so the structure is not enough, resulting in job resistance and reverse airflow, and the noise power in the silencer H material. 8 200848602 Rate ==:==„ and the fuel is eliminated and the high-speed training domain produces a small discriminating effect at the end. [Inventive content] In order to solve the above problems, the present invention adopts and has the effect of removing the viewing resistance and reducing the slaves. In order to solve the above problems, an object of the present invention is to provide a method for eliminating back pressure and preventing backflow, and removing the essentially generated exhaust gas when the material is discharged to the outside. Resistance and enthalpy: machine and large reduction, exhaust gas, which can improve the combustion efficiency of 嶋: machine or pin furnace. Another purpose of 孓 is to provide a way to eliminate back pressure and prevent back flow, the device does not change the internal combustion engine. In the case of the exhaust pipe or the end of the ventilating ventilator, simple loading and unloading can be performed. , ° The present invention for achieving the above object and solving the problems of the prior art is included. The official blade 112 has a structure in which the end of the ventilating cylinder which can be inserted from the _ machine or the ventilating cylinder end, and a portion thereof protrudes more outward than the end portion of the exhaust pipe to form the first passage W1 for exhausting the exhaust gas. The first passage W1 has a smaller area in the direction along which the exhaust gas is exhausted (four)-venturi structure V1; the fixed tube is described as the blade 112' and the above-mentioned __ protrudes more outward than the above-described solid b blade 112, and forms a second passage The rudder is such that the fixed venting vane 112 of the above-mentioned 200848602 has the exhaust gas passing through the exhausting passage and the passage W1 again, and the second venturi structure V2 having the smaller C-direction area of the second passage fixing pipe 110; The above-mentioned _# is formed along the circumference, and the position of the transported 彳 疋 is set in the fixed pipe 11Q sW σ 111, and the double exhaust gas 20 is connected to the double exhaust pipe and the upper _== the above _110 _, and a gap is left between the third passages W3 s to form a suction exhaust gas counterflow venting reduction = the third passage W3 is formed with a third exhaust gas having a smaller innerward area, the diameter of the fixed pipe blade 112 The community that is larger than the cylinder (4) n H is in the money to change the money tube 10 or the ventilation sheet 1. In the case of a structure, it can be called a single insertion, and there are a plurality of adding portions 113 inside the fixed tube 2 cylinder so as to forcibly insert and install the exhaust pipe 10 or == characterized by the above-mentioned double row The trachea is separated from each other by a predetermined interval. The above-mentioned triple breast tube 130 is connected to the opposite side of the protruding portion of the fixed tube blade (1). Further, the present invention is characterized in that the diameter D2 of the end portion of the fixed pipe blade 112 is greater than or equal to the diameter m of the end portion of the fixed pipe 110. Moreover, the present invention is characterized in that it comprises: a fixed pipe blade having a structure of exhaust gas (four) or a ventilating cylinder extending from 10 200848602, one of which is = r (four) broken feeding setting, and the first solidifying tube of the material m surrounding the fixed pipe leaf; the end of the fixed pipe (10) is more cast and protruded than the above-mentioned blade 112, forming a second passage through which the exhaust gas of the first passage is passed again; and two he~^2 0 inside (the position to be connected to the fixed pipe blade) 曰疋H is formed in the 0-week direction. The _ tube flow is fine (1), and the connection is arranged to surround the outer side of the fixed pipe 11〇, and there is an empty county between the coffee and the 疋It is shaped like a three-channel inhalation. The device for internal combustion and backflow is equipped with mechanical and atmospheric resistance, and the same end portion improves the combustion efficiency of the internal combustion engine or the pin by reducing the combustion efficiency of the exhaust resistance furnace. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the invention and the accompanying drawings. In the course of explaining the present invention, the detailed description of the common general knowledge or the structure will clarify the details of the present invention, and the detailed description thereof will be omitted. 1 is a perspective view of a device for eliminating #pressure preventing backflow according to a preferred embodiment of the present invention. FIG. 2 is a body diagram of a portion of the figure 喊 Α Α 沿 沿 线 线 线 线 线 线 线 疋 疋A cross-sectional view taken from the Α_Α line, and Figure 4 is a view of the rear 200848602 of Figure i. Between 1 and 4, a device 1GG for eliminating back pressure against backflow according to a preferred embodiment of the present invention includes a fixed pipe m, a fixed pipe blade 112, a double exhaust pipe 12A, and a triple exhaust pipe 130. The fixed pipe 11G, the fixed pipe blade 112, the double exhaust pipe 120, and the one heavy exhaust pipe 13〇 respectively have different diameters, and the #二重魏管管莱定管 11G is disposed on the outer side of the fixed pipe HQ, and the fixed pipe is provided The blade 112' is provided with a triple exhaust pipe 13A on the outer side of a heavy exhaust pipe 12A, and the structure of each will be described in detail below. The above-described sturdy blade 112 is disposed on the ventilating tube 10 extending from the internal combustion engine or the ventilating cylinder of the pin furnace, and the fixed f blade is more inferior than the ventilating venting portion. The first passage has a first ventur structure V. The closer the first venturi structure is to the end of the exhaust gas, the smaller the area of the passage. The closer the fixed tube blade ι2 having the above structure is to the end portion where the area of the first passage W1 is reduced, the more the flow rate of the exhaust gas is increased, and by reducing the exhaust resistance and the atmospheric resistance, the exhaust gas can be discharged finely. On the other hand, the diameter of the above-mentioned fixed pipe blade 112 is larger than the diameter of the exhaust pipe 10 or the ventilating cylinder so that it can be set by a plug-in connection without changing the structure of the exhaust pipe or the ventilating cylinder, and has many internals. Pressurizing portions 113 for forcibly inserting and connecting the exhaust gas (four) or the ventilating cylinder. The above-mentioned plus (four) ιΐ3 is formed by a certain interval=solid_sheet__, and the fixed pipe blade is closely attached to the exhaust gas 200848602 pipe or the cistern when the _tube leaf and the venting hole s 10 or the solid cymbal 112 and the ventilating cylinder are formed. From the 结合 啼 轴 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 112 4, the connection hole is formed in the - the contact hole 1 is cut into the door - the redistribution roll 120), and is connected to the exhaust pipe 经由 via the above-mentioned inserted fixing bolt β or simplified, thereby preventing the fixing The detachment of the tube blade 112. The air pumping member m protrudes around the simultaneous outer side of the above-mentioned leaf, and the exhaust gas of the first paste formed with the second passage w 疋 tube tea piece 112 passes again, and is formed with the second The venturi structure V2 'the structure of the second passage (four) is gradually decreased in the direction in which the exhaust gas is discharged. At this time, the diameter of the end portion of the fixed pipe blade 112 is larger than the diameter D1 of the end portion of the fixed pipe 11, in order to make The flow rate of the second passage 2 formed by the pass tube HG is formed by the blade 112 The flow rate of the first passage... quickly exhausts the exhaust gas to the structure having the above structure, and rapidly exhausts the exhaust gas through the first venturi and the second venturi formed on the fixed tube leaf and the port g 110 The above-mentioned heavy exhaust pipe 20 is formed to form a third passage W3 for inflowing the reverse flow of exhaust gas to be disposed on the fixed pipe 11〇 so as to surround the outer circumference of the fixed pipe, and a third venturi structure V3 is formed. The more the structure is facing inward (ie, the second phase of the row 13 200848602 gas g ίο: the _ the more the _ is reduced, so that the exhaust gas (hereinafter referred to as "exhaust countercurrent,") is more flowing. Therefore, the third venturi designed as described above is because the exhaust gas countercurrent mainly occurs along the inner side wall of the double exhaust pipe 12'. Therefore, the above structure is provided for the rapid discharge of the Wei. The inside of the fixed pipe 110 (and the fixed portion) At a position of the joint of the tube blade ιΐ2, a fine tube flow port (1) is formed along the peripheral portion for forming an exhaust gas that will flow countercurrently along the outer wall of the double exhaust pipe 120 (ie, "Exhaust gas flow , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The exhaust pipe has a (four) partition, and the surrounding double exhaust pipe 13A is connected to the opposite side of the protruding portion of the fixed pipe blade (1). The device (10) having the above-mentioned structure can eliminate the back pressure to prevent backflow. It is suitable for being disposed at the end of the exhaust pipe of the internal combustion engine or the end of the ventilating cylinder. μ Γ The device for preventing backflow of the mis-pressure of the present invention is installed in the flow squeak of the internal combustion engine and the reverse flow of the exhaust gas. As shown in FIG. 5, the purely inductive tube 1G and the fixed tube blade 112 generated by the operation of the internal combustion engine are discharged. The exhaust gas G1 is formed by the first venturi formed by the mosquito tube blade 14 200848602 Structure V1 area broken object (4) _ Exhaust gas such as _. U〇=面面上_The exhaust gas discharged from the tube blade 112 is via the fixed tube at the end of the fixed tube UG, and the exhaust gas G2 at the end of the fixed tube UG passes through the second venturi structure V2 region formed at the end of the solid center m The flow rate is further increased and quickly discharged to the outside. When 曰f μ gas, the part of the exhaust gas will inevitably flow backwards, resulting in a flow of the discharge (four), and (4) through: the vacuum generated by the third venturi structure formed by the i2Q, such as the exhaust gas flow formed as described above. (10) The inner wall of the double exhaust pipe m is moved to the inside quickly. The exhaust gas counterflow G3 thus moved flows through the internal flow G4 of the tree 曙 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The exhaust gas countercurrent inside the official 110 is finally quickly discharged to the outside together with the exhaust gas. x As described above, the present invention is more effectively turned over by the first venturi structure based on the fixed tube blade 112, the second venturi structure V2 based on the fixed tube m, and the third venturi structure based on the double exhaust material. Exhaust gas, the counter-current flow moves along the inner wall of the double exhaust pipe. _ The cap is fixed to the inside of the fixed pipe after the capillary tube (1) enters the inside of the fixed pipe again, so that the exhaust gas can be prevented from flowing backward, and the combustion of the internal combustion engine or the pin furnace can be improved. effectiveness. 15 200848602 The present invention is also stipulated in the above-mentioned Wei embodiment, and those skilled in the art can have various modified embodiments in the case of the present invention, and such modified embodiments are all required. Within the scope of protection. As described above, the present invention eliminates the exhaust resistance of the exhaust gas and the reverse flow of the exhaust gas, and lowers the atmospheric resistance, thereby achieving an improvement in fuel consumption rate and a reduction in smoke due to an increase in the efficiency of the pump and the fiber. The running performance and the kinetic energy and thermal energy are maximized. Further, in the case where the structure of the end portion of the exhaust pipe of the internal combustion engine or the end portion of the face ventilator is not changed, the mounting can be easily performed, thereby improving the interchangeability with various devices. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a device for eliminating back pressure against backflow according to a preferred embodiment of the present invention; FIG. 2 is a perspective view of a portion taken along line A_r of FIG. FIG. 4 is a rear view of FIG. 1; the gas turbine H is a countercurrent of exhaust gas and exhaust gas when the device for eliminating back pressure prevention against backflow is installed in the inner discharge tube according to the present invention. Flowing the cross section. 16 200848602 [Description of main components] G1 exhaust gas G2 exhaust gas G3 exhaust countercurrent G4 internal flow VI first venturi structure V2 second venturi structure V3 third venturi structure W1 first channel W2 second channel W3 third channel 10 The exhaust pipe 100 eliminates the back pressure to prevent the reverse flow device 110 fixed pipe 17 200848602 111 fixed pipe flow port 112 fixed pipe blade 113 pressurizing portion 120 double exhaust pipe 130 triple exhaust pipe 132 connecting hole