TWI845165B - Rotor interlock sealing mechanism for wankel engine - Google Patents

Abstract

A rotor interlock sealing mechanism for Wankel engine, which comprised of six side rings, six corner seals, three apex seals and two rotor side plates.

A pressure reacting interlocked mechanism is formed. There is no relative motion between side rings and cylinder plates when the rotor rotates. relative motion takes over by rotor plates against cylinder side wall instead.

In comparison with conventional rotor side seals, they are all exposed to contact against cylinder side walls.

Description

轉子發動機之轉子內縮式密封環機構 Rotor retractable sealing ring mechanism of rotor engine

本發明係隸屬一種轉子式發動機之技術領域，以密封環結構內移再搭配側板的方式，避免轉子氣密環的磨擦位移，進而提升其氣密性、導熱性、耐用性等優勢，有別於傳統外露式氣密環。 The present invention belongs to the technical field of a rotor engine. The sealing ring structure is moved inward and matched with a side plate to avoid friction displacement of the rotor airtight ring, thereby improving its airtightness, thermal conductivity, durability and other advantages, which is different from the traditional exposed airtight ring.

按，傳統的轉子式發動機〔源自汪克爾引擎〕與傳統的往復式活發動機不同的是，其運轉元件為三角轉子，斷面造型是被稱為勒洛三角形的定寬形狀。三角型轉子循偏心軸採軸向運轉，而不需利用往復式活塞曲軸將輸出的力量轉向，因而減少了能量的耗損。傳統三角轉子的密封環設於於其轉子兩側壁面，直接外露與壁板磨擦，會形成下述缺陷： According to the traditional rotor engine (derived from the Wankel engine) and the traditional reciprocating engine, its running element is a triangular rotor, and the cross-sectional shape is a fixed width shape called a Reuleaux triangle. The triangular rotor rotates axially along the eccentric shaft, and does not need to use a reciprocating piston crankshaft to turn the output force, thus reducing energy loss. The sealing rings of the traditional triangular rotor are set on the walls on both sides of the rotor, directly exposed and rubbing against the wall, which will cause the following defects:

(1)封閉缺陷，外側環必須擔負吸收轉子軸向位移能量，一旦單側環縮入轉子環槽，封閉功能則完全喪失。 (1) Sealing defect: the outer ring must absorb the axial displacement energy of the rotor. Once the single-sided ring shrinks into the rotor groove, the sealing function is completely lost.

(2)角封缺陷，角封行經大面積排氣口，停機熱傷害導致潤滑油碳化喪失伸縮功能，於逆離心力角度發生彈跳。 (2) Corner seal defects. The corner seal passes through a large exhaust port. Thermal damage during shutdown causes the lubricating oil to carbonize and lose its expansion and contraction function, causing rebound at the angle against the centrifugal force.

(3)溫差過大，冷熱區域過大溫差導致平面形變，更惡化封閉問題，過高排氣側溫度使轉子油封快速脆化。 (3) The temperature difference is too large. The large temperature difference between the hot and cold areas causes plane deformation, which further aggravates the sealing problem. The high exhaust side temperature causes the rotor oil seal to become brittle quickly.

本發明之主要目的係在提供一種轉子發動機之轉子內縮式互鎖密封環機構，使提升工作效率，其應用於轉子發動機內之轉子，使達成更優良的氣密方式。轉子本體具有三個等角之邊緣面，且該三角轉子之尖端設有軸向延伸之直式角封安裝槽，供分別設置一可貼抵前述橢圓形汽缸殼體內部之直式角封，其特徵在於： The main purpose of the present invention is to provide a rotor retractable interlocking sealing ring mechanism for a rotor engine to improve working efficiency. It is applied to the rotor in the rotor engine to achieve a better airtight method. The rotor body has three equiangular edge surfaces, and the tip of the triangular rotor is provided with an axially extending vertical corner seal mounting groove for respectively setting a vertical corner seal that can be attached to the inside of the aforementioned elliptical cylinder shell. Its characteristics are:

(1)轉子本體兩側分別具有一可相對應之轉子側板，轉子本體與兩側之轉子側板之間分別設有轉子氣密環機構，該氣密環機構係由三個曲線側環及三個角封柱以環狀間隔連接而成，轉子本體上施作相對應之嵌槽，汽缸體經由轉子所隔開的三個艙室，會因為運轉產生壓力差，此壓力差將使機構產生互鎖達到氣密需求。 (1) The rotor body has a corresponding rotor side plate on both sides. A rotor airtight ring mechanism is provided between the rotor body and the rotor side plates on both sides. The airtight ring mechanism is composed of three curved side rings and three corner sealing columns connected by annular intervals. Corresponding grooves are made on the rotor body. The three chambers of the cylinder body separated by the rotor will generate a pressure difference due to operation. This pressure difference will cause the mechanism to interlock to achieve the airtight requirement.

(2)透過上述技術手段的具體實現，讓本發明可利用轉子側板隔開轉子氣密環機構使之不與汽缸壁產生磨擦，避免磨擦導致轉子氣密環位移，進而提升其氣密性，以提升運轉之效率。轉子本體之兩側壁面設有安裝槽，分別供側環及圓形角封柱嵌設，該角封柱與曲線側環經由彈力裝置凸出轉子本體之表面與側板密合。 (2) Through the specific implementation of the above technical means, the present invention can use the rotor side plate to separate the rotor airtight ring mechanism so that it does not produce friction with the cylinder wall, avoiding friction causing displacement of the rotor airtight ring, thereby improving its airtightness and improving the efficiency of operation. The two side walls of the rotor body are provided with mounting grooves for the side ring and the circular corner sealing column to be embedded respectively. The corner sealing column and the curved side ring protrude from the surface of the rotor body through the elastic device and fit tightly with the side plate.

為使 貴審查委員能進一步了解本發明的構成、特徵及其他目的，以下乃舉本發明之若干較佳實施例，並配合圖式詳細說明如後，同時讓熟悉該項技術領域者能夠具體實施。 In order to enable the review committee to further understand the structure, features and other purposes of the present invention, the following are some preferred embodiments of the present invention, and are described in detail with the help of drawings, so that those familiar with the technical field can implement them in detail.

10:三角轉子 10: Triangular rotor

11:轉子本體 11: Rotor body

110:內齒軸孔 110: Internal gear shaft hole

12:邊緣面 12: Edge surface

13:角封安裝槽 13: Corner seal installation slot

14:角封 14: Corner seal

15:轉子側板 15: Rotor side panel

16:環狀油封安裝槽 16: Ring oil seal mounting groove

17:曲線環槽 17: Curved ring groove

18:角封柱槽 18: Corner sealing column groove

20:轉子氣密環 20: Rotor airtight ring

21:曲線環 21: Curve loop

22:角封柱 22: Corner sealing column

220:角封嵌槽 220: Corner seal groove

第一圖：本發明轉子發動機之轉子內縮式密封環機構的外觀示意圖。 Figure 1: Schematic diagram of the appearance of the rotor retractable sealing ring mechanism of the rotor engine of the present invention.

第二圖：本發明轉子發動機之轉子內縮式密封環機構的立體分解示意圖。 Figure 2: A three-dimensional exploded schematic diagram of the rotor retractable sealing ring mechanism of the rotor engine of the present invention.

第三圖：本發明轉子發動機之轉子內縮式密封環機構的側視平面示意圖。 Figure 3: A side plan view of the rotor retractable sealing ring mechanism of the rotor engine of the present invention.

第四圖：本發明轉子發動機轉子之互鎖壓力反應側板平面示意圖。 Figure 4: Schematic diagram of the interlocking pressure reaction side plates of the rotor of the rotor engine of the present invention.

本發明係一種轉子發動機之轉子內縮式密封環機構，以下藉由特定的具體實施形態說明本發明之技術內容，使熟悉此技藝之人士可由本說明書所揭示之內容輕易地瞭解本發明之優點與功效。然本發明亦可藉由其他不同的具體實施形態加以施行或應用。因此隨附圖例之本發明的具體實施例及其構件中，所有關於指定的尺寸、前與後、左與右、頂部與底部、上部與下部、以及水平與垂直的參考，僅用於方便進行描述，並非限制本發明，亦非將其構件限制於任何位置或空間方向，當可在不離開本發明之申請專利範圍內，根據本發明之具體實施例的設計與需求而進行變化。 The present invention is a rotor retractable sealing ring mechanism for a rotor engine. The technical content of the present invention is described below by a specific concrete implementation form, so that people familiar with this technology can easily understand the advantages and effects of the present invention from the content disclosed in this manual. However, the present invention can also be implemented or applied through other different specific implementation forms. Therefore, in the specific implementation form of the present invention and its components attached with the legend, all references to the specified size, front and back, left and right, top and bottom, upper and lower, and horizontal and vertical are only used for the convenience of description, and do not limit the present invention, nor limit its components to any position or spatial direction. It can be changed according to the design and needs of the specific implementation form of the present invention without leaving the scope of the patent application of the present invention.

本發明的架構，則係如第一、二圖所示，該三角轉子(10)可應用於一發動機之一橢圓形汽缸殼體內部〔圖中未示〕，而該三角轉子(10)係由一中心具有一內齒軸孔(110)之轉子本體(11)所構成，又該轉子本體(11)具有三個等角之邊緣面(12)，且該三角轉子(10)之相鄰邊緣面(12)間分別形成有軸向延伸之角封安裝槽(13)，供分別設置一可貼抵前述橢圓形汽缸殼體內部之角封(14)，由於該三角轉子(10) 係於該橢圓形汽缸殼體內採偏心運轉，因此運轉過程中，利用該三角轉子(10)與該橢圓形汽缸殼體內部的容積會不斷地改變，來達成四行程運轉所需要的進氣、壓縮、點火與排氣過程，以上所述結構及動作原理與典型三角轉子式發動機相同，且非本發明之特徵所在，容不再贅述；而本發明的特色在於該三角轉子(10)之轉子本體(11)兩側分別具有一可相對貼合之轉子側板(15)，且該轉子本體(11)與兩側之轉子側板(15)之間分別設有一個轉子氣密環(20)，轉子氣密環(20)係由三個曲線側環(21)及三個角封柱(22)呈環狀間隔對接而成，其中角封柱(22)的寬度大於該等曲線環(21)，又該轉子本體(11)之兩側壁面分別形成有環狀安裝槽(16)，而該環狀安裝槽(16)係由間隔對接之三個曲線側環槽(17)與三個角封柱槽(18)所組成，且令該等角封柱(22)與該曲線環(21)略為凸出該轉子本體(11)之兩側表面，而該等角封柱(22)分別具有供該等角封(14)兩端嵌設之角封嵌槽(220)，以提供該等角封(14)兩端之密封作用，且令前述之轉子側板(15)可壓貼於該轉子本體(11)之轉子氣密環(20)上，而達到徑向密封之作用，且可利用該等轉子側板(15)保護該等轉子氣密環(20)，使得該等轉子氣密環(20)在該三角轉子(10)運轉時不造成磨擦位移。 The structure of the present invention is as shown in the first and second figures. The triangular rotor (10) can be applied to the inside of an elliptical cylinder housing of an engine (not shown in the figure), and the triangular rotor (10) is composed of a rotor body (11) having an internal gear shaft hole (110) at the center. The rotor body (11) has three equiangular edge surfaces (12), and axially extending corner seal mounting grooves (13) are formed between adjacent edge surfaces (12) of the triangular rotor (10) for respectively setting a corner seal (14) that can be attached to the inside of the elliptical cylinder housing. The triangular rotor (10) is eccentrically rotated in the elliptical cylinder housing. Therefore, during the operation, the volume of the triangular rotor (10) and the internal volume of the elliptical cylinder housing will continuously change to achieve the intake, compression, ignition and exhaust processes required for the four-stroke operation. The above-mentioned structure and operation principle are the same as those of a typical triangular rotor engine, and are not the characteristics of the present invention, so they will not be described in detail. The characteristic of the present invention is that the rotor body (11) of the triangular rotor (10) has a rotor side plate (15) on both sides that can be relatively fitted, and the rotor body ( A rotor airtight ring (20) is respectively arranged between the rotor side plates (15) on both sides. The rotor airtight ring (20) is formed by three curved side rings (21) and three corner sealing columns (22) connected in an annular manner at intervals, wherein the width of the corner sealing columns (22) is greater than the curved rings (21). The two side walls of the rotor body (11) are respectively formed with an annular mounting groove (16), and the annular mounting groove (16) is composed of three curved side ring grooves (17) and three corner sealing column grooves (18) connected in an annular manner at intervals, and the corner sealing columns (22) and the curved ring (21) are connected in an annular manner at intervals. 1) Slightly protrude from the two side surfaces of the rotor body (11), and the angle seal columns (22) respectively have angle seal embedding grooves (220) for embedding the two ends of the angle seals (14) to provide sealing for the two ends of the angle seals (14), and allow the aforementioned rotor side plates (15) to be pressed against the rotor airtight ring (20) of the rotor body (11) to achieve a radial sealing effect, and the rotor side plates (15) can be used to protect the rotor airtight rings (20), so that the rotor airtight rings (20) do not cause friction displacement when the triangular rotor (10) is running.

透過前述的結構設計，如第一、二、三及四圖所 揭示者，本發明之三角轉子(10)於實際運轉時，由於該等轉子氣密環(20)係設於該轉子本體(11)與兩側轉子側板(15)之間，再加上該轉子氣密環(20)具有對應轉子本體(11)邊緣面(12)之曲線環(21)與對應角封(14)端部之角封柱(22)，使得該三角轉子(10)能得到極佳的密封作用，且該三角轉子(10)運行時，其轉子氣密環(20)不會直接與該汽缸側壁磨擦產生位移洩漏。 Through the aforementioned structural design, as disclosed in the first, second, third and fourth figures, when the triangular rotor (10) of the present invention is actually in operation, since the rotor airtight rings (20) are arranged between the rotor body (11) and the two side rotor side plates (15), and the rotor airtight ring (20) has a curved ring (21) corresponding to the edge surface (12) of the rotor body (11) and a corner seal column (22) corresponding to the end of the corner seal (14), the triangular rotor (10) can obtain an excellent sealing effect, and when the triangular rotor (10) is in operation, the rotor airtight ring (20) will not directly rub against the cylinder side wall to generate displacement leakage.

由於傳統轉子式發動機〔汪克爾發動機〕皆是使用外露之轉子側邊環與角封以達成氣體封閉功能，如此設計將使轉子於運行時，側邊環直接與側壁板摩擦，產生之阻力致使側環僅是一端被推著運轉，於是側邊環兩端間隙狀況為一端無間隙，另一端大間隙，造成洩漏。 Since traditional rotor engines (Wankel engines) all use exposed rotor side rings and corner seals to achieve the gas sealing function, such a design will cause the side rings to directly rub against the side wall when the rotor is running, and the resistance generated will cause only one end of the side ring to be pushed to run, so the gap between the two ends of the side ring is one end without gap and the other end with a large gap, causing leakage.

傳統轉子式發動機於使用外露側邊環之形式，其汽缸側壁進排氣開口會與側邊環發生重疊，也就是如同二行程發動機相同，二行程發動機之活塞環會與進排氣口發生重疊，本發明內縮式轉子氣密環(20)將避免此與缺口重疊之現象，由於重疊現象是造成缸壁刮傷的一個潛在威脅。 In conventional rotary engines that use exposed side rings, the intake and exhaust openings on the cylinder side walls will overlap with the side rings, which is similar to a two-stroke engine, where the piston rings of two-stroke engines will overlap with the intake and exhaust ports. The retractable rotary airtight ring (20) of the present invention will avoid this phenomenon of overlapping with the gaps, as the overlapping phenomenon is a potential threat to scratching the cylinder wall.

本發明之內縮式轉子氣密環(20)不與汽缸壁發生摩擦，高壓之氣體會衝擊轉子氣密環(20)使之打印至轉子側板上(15)，轉子氣密環(20)硬度製作上大於轉子側板(15)，一旦運轉後打印完成，將達到最完美密封。 The retractable rotor airtight ring (20) of the present invention does not rub against the cylinder wall. The high-pressure gas will impact the rotor airtight ring (20) to print onto the rotor side plate (15). The rotor airtight ring (20) is made harder than the rotor side plate (15). Once the printing is completed after operation, the most perfect seal will be achieved.

本發明之內縮式轉子氣密環(20)得以進一步提 高進排氣開口裕度，因與開口重疊的封閉方式不是一個環而是一個面。 The retractable rotor airtight ring (20) of the present invention can further improve the margin of the intake and exhaust openings because the sealing method overlapping the opening is not a ring but a surface.

類似的技術領域中未見相同或近似的產品創作或公開使用，故本發明已符合發明專利有關「新穎性」與「進步性」的要件，乃依法提出申請發明專利。 There are no identical or similar products created or publicly used in similar technical fields, so this invention meets the requirements of invention patents regarding "novelty" and "progressiveness", and an application for an invention patent is filed in accordance with the law.

10:三角轉子 10: Triangular rotor

11:轉子本體 11: Rotor body

110:內齒軸孔 110: Internal gear shaft hole

12:邊緣面 12: Edge surface

13:角封安裝槽 13: Corner seal installation slot

14:直式角封 14: Vertical corner seal

15:轉子側板 15: Rotor side panel

16:環狀油封安裝槽 16: Ring oil seal mounting groove

17:曲線環槽 17: Curved ring groove

18:角封柱槽 18: Corner sealing column groove

20:轉子氣密環 20: Rotor airtight ring

21:曲線環 21: Curve loop

22:角封柱 22: Corner sealing column

220:角封嵌槽 220: Corner seal groove

Claims (1)

一種轉子發動機之轉子內縮式密封環機構，其可應用於一發動機之一橢圓形汽缸殼體內部，該轉子本體具有三個邊緣面，轉子之尖端有軸向延伸之直式角封安裝槽，供分別設置三片可貼抵前述汽缸體內部之角封並將汽缸隔為三個氣室，其特徵在於：該轉子本體兩側分別設有相對應之轉子側板，以轉子側板對應汽缸側壁之相對運動，藉此相對運動，依據運轉角度開啟或關閉進排氣口；該轉子本體與兩側之轉子側板之間分別設有轉子氣密環機構，該轉子氣密環機構一側係由三個曲線側環及三個角封柱以環狀對接而成，並以彈簧施以預力，使該轉子氣密環機構於三角轉子運轉時緊貼側板，此氣密環機構與轉子側板於運行期間不存在相對運動；以主轉子、兩側密封環機構、兩側轉子側板這三種主要零件，依據三個艙室之壓力差產生互鎖，達成三角轉子之密封之目的。 A rotor retractable sealing ring mechanism for a rotor engine can be applied to the inside of an elliptical cylinder shell of an engine. The rotor body has three edge surfaces, and the tip of the rotor has an axially extending vertical corner seal mounting groove for respectively arranging three corner seals that can abut against the inside of the cylinder body and divide the cylinder into three air chambers. The mechanism is characterized in that: corresponding rotor side plates are respectively arranged on both sides of the rotor body, and the rotor side plates move relative to the cylinder side walls, thereby opening or closing the air inlet and exhaust ports according to the operating angle; The rotor body and the rotor side plates on both sides are provided with rotor airtight ring mechanisms. One side of the rotor airtight ring mechanism is formed by three curved side rings and three corner sealing columns connected in a ring shape, and a spring is used to apply preload so that the rotor airtight ring mechanism is tightly attached to the side plate when the triangular rotor is running. There is no relative movement between the airtight ring mechanism and the rotor side plate during operation. The three main parts of the main rotor, the two side sealing ring mechanisms, and the two side rotor side plates are interlocked according to the pressure difference of the three chambers to achieve the purpose of sealing the triangular rotor.

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