568999 五、發明說明（1) 【發明所屬之技術領域】 本創作係有關於一種交叉橢圓及圓截面換熱增強管， 係涉及傳熱增強元件，為一種兩端圓截面的圓一交叉橢圓 截面換熱增強管，屬傳熱增強和熱交換器技術領域。 【先前技術】 能，在 和被動 技術， 則是指 被採用 插入物 泛應用 ，流動 廣泛地 傳熱增強技術由於其能提高熱量傳遞速率和節 工程中獲得了廣泛的應用。它通常可分為主動強增 增強技術。前者是指需從外界輸入能量的傳熱增強 如電場增強、磁場增強、振動增強技術等等；後者 不需外界能量的傳熱增強技術，因此更易在工程中 。被動增強技術通常包括擴展表面〈肋片〉、管内 、旋流〈紊，〉發生器等。被動增強技術屬已被廣 ，但仍存在著一個共同的問題，即傳熱增強的同時 阻力增加更多，不利於節能，從而阻礙這些技術更 應用於各工程領域。 * & i t ΐ此，為與常規的傳熱增強技術不同，過增元等 的新方、>，，π边门又梯度的協同的角度提出了傳熱增強 洛I 、泡#秘原則 即棱南场的協同程度〈減小速 度矢里與溫度梯矢晋的水& ,. 1的A角、增加速度場的均勻程度等〉 568999 五、發明說明（2) 就能在阻力增加較少的條件杨 新原則，使管流中能形 i傳熱。本發明即根據此 與溫度梯度場的協同程rr::t強=顯著改善速度場 【發明内容】 一種交叉橢圓及 ，k出了 一種 管，與其他傳熱 具有更好的傳熱 阻力更小者。 熱增強管，其特 圓過渡段所組成 依次周期排列， 〜90度角；其橢 或兩條直線加兩 稱和近似對稱的 可以等長或不等 長或不等長，各 段的長度與其内 管段内徑之比為 1〜2 · 5 ;優選值 爰是，本發明之主要目的即在於提供 二截面換熱增強管’係根據，，場協同原貝，; 兩。截面的圓一交又橢圓載面換熱增強 二強管相比，在相同$〈風機〉功耗下， ，忐，或者在相同的傳熱能力下，其流動 一種交 干圓管 ，所述 段的橢 採用標 圓形或 形截面 〈矩形 以等長 ，各擴 徑的長 叉橢圓 段、橢 圓管段 圓長軸 準橢圓 多段孤 管；而 截面管 或不等 圓管段 軸與短 及圓截面換 圓管段及橢 和橢圓管段 之間交又1 5 或近似橢圓 線擬合的對 各個圓管段 〉段可以等 長；各圓管 的長度與圓 軸之比為1. 本發明係為 徵係在於：由若 ’兩端是圓管段 而且相鄰橢圓管 圓管段截面形狀 個圓弧構成的爲 扁圓形，包括矩 長；各個橢圓管 個橢圓過渡段τ 徑之比為0. 5〜1 〇 1〜1 0 ;橢圓管外 568999 五、發明說明（3) 為1.3〜1.7 ;換熱管的内表面，或外表面或内、外表面可 以採用光滑表面，也可以採用低肋表面或螺紋表面者。 | 【實施方式】 i 首先’清配合參閱第一圖所不’係為本發明交叉橢圓 及圓截面換熱增強管之結構示意圖，該換熱增強管由若干I ί個圓管段1 、橢圓管段2、橢圓過渡段3和兩端進口圓管 丨段4所組成。圓管段1的長度Lc根據耐壓、流動阻力、安 · 裝折流板或折流桿的要求來取，一般L c / d = 〇 . 5〜1 〇，其中d I疋圓管的内徑。各個圓管段1的長度可以等長也可以不等 |長。兩端進口圓管段4長度Lo可以取管板厚度的2〜4倍， 視它與管板裝配的需要而定，在滿足裝配需要的前提下取| '小值。橢圓管段2的長度Le根據傳熱增強的要求來取，一丨 丨般Le/d = 1〜10。各個橢圓管段2的長度可以等長也可以不 i 等長。橢圓管段2橫截面形狀為標準橢圓或近似橢圓形或i 兩條直線加兩個圓弧構成的扁圓形或多段弧線擬合的對稱 丨和近似對稱的扁圓形。橢圓管段2外徑長軸A、短軸b之比I 取Α/Β = 1·；[〜2. 5，優選用Α/Β = 1· 3]. 7。相鄰兩橢圓管段2 β 擴圓管段2的長轴之間有一個夾角c(請參閱第二圖 :所不）’取C = 15〜19度角，優選c等於60度和90度兩種；若 :換熱器中換熱管按四邊排列，取(^⑽度，若換熱管成三角 形排列’取C = 60度。橢圓過渡段3的長度Lt取Le/2 > =Lt丨 568999 五、發明說明（4) ~~~ —----—___ 等；篇選用小值，各個過渡段3的長度可以等長 j ^發明換熱增強管的内表面、外表面或内、外 = :赤(例t用普通圓管通過輥軋或模屢或在乳 制,，，、縫g時一:人成形），也可以是低肋表面或螺紋 (例如用低肋管或螺紋管來製造），形成周期性的软 丨橢圓、橫橢圓等結構（請參閱第一至 ^ I1 =;=;度不要太高的情況下，這種 :在-個截面上實現了一部分收縮而另一部分J:， 丨=了 渦流的二次流（再請參閱第三圖； 丨同。帶低肋表面：，官：流體速度場與溫度梯度場的協 1增強管，：.圓一橢圓截面交又縮放換熱 :放換孰辦強I f面的稱為’，螺紋圓之橢圓截面交叉縮 叉擴圓。“增兩端圓載面的圓-交 兩類：4 的作用’傳熱增強的效果更好。這 丨合用於工作产體不==父叉橢圓載面換熱增強管”更適 丨較小的場合3纖維和顆粒。且黏度較大、流動速度 ，其分敘3;我們可以知道本發明具有下列各項的優點 本i明所獲得的大尺度二次流〈渦流〉，不是靠外界 568999 五 2 4 發明說明（5) 插入物產生，而甚含& 此流動阻力小。Β子沿程截面形狀變化所致’因 •ίΓ明二次流是縱向…的方向與流向平 向〉相IΊ ί的k向渦〈渦的方向是垂直於流動方 而且沿程衰減；場= 有更好的協同程度’ .本發明與其它換心更好的傳熱增強性能。 粍下，且右由Λ、…、曰強s相比，在相同泵〈風機〉功 牦下具有更好的傳熱性能。 • 範圍廣，既能用於單相流體傳熱強化，亦 戽內^ 2 弗騰、流動冷凝等相變換熱強化，既用於 6 …、㈢強，亦使管外傳熱得到增強。 •本I”換熱增強管由於管截面狀和大小的頻繁變化 的鸽二々Γ ^阻止污垢的形成，使用換熱增強管製造 乂 &献換器，其官束的振動要比用普通圓管製 =父換器大為減輕，使換熱增強器的使用壽命大 大徒南。 綜ί上述，本發明實未曾見諸於同產品中，申請前亦 誠已符合專利法之以要件，爰依法提出發明 專利甲鲕。 Ϊ二士所述者，僅為本發明之較佳實施例，當不能以 之範圍’ #大凡依本發明申請專利範圍 及心 句内谷所作之等效變化與修飾，皆應仍屬本發568999 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a cross ellipse and a circular cross-section heat transfer enhancement tube, and relates to a heat transfer enhancement element, which is a circular-cross ellipse cross-section with a circular cross-section at both ends. The heat transfer enhancement tube belongs to the technical field of heat transfer enhancement and heat exchangers. [Previous technology] Energy, passive and passive technologies refer to the universal application of inserts, which are widely used for heat transfer enhancement because of its ability to increase heat transfer rates and energy efficiency. It can usually be divided into active power enhancement technology. The former refers to heat transfer enhancement that requires energy input from the outside, such as electric field enhancement, magnetic field enhancement, vibration enhancement technology, etc .; the latter does not require external energy heat transfer enhancement technology, so it is easier to be used in engineering. Passive enhancement techniques usually include extended surfaces (ribs), tubes, swirling <turbulence,> generators, etc. Passive enhancement technology has been widely used, but there is still a common problem, that is, the increase of heat resistance and the increase of resistance increase, which is not conducive to energy conservation, which prevents these technologies from being more widely used in various engineering fields. * & It is different from the conventional heat transfer enhancement technology, such as the new side of the additive element, >, the π side gate and the gradient of the synergy angle are proposed. The degree of synergy of the south edge field <reducing the water velocity of the velocity vector and the temperature gradient vector & 1, the angle of A, increasing the uniformity of the velocity field, etc.> 568999 V. Description of the invention (2) Yang Xin's principle with few conditions enables the heat transfer in the tube flow. The present invention is based on the synergy path rr :: t strong = temperature field to significantly improve the speed field [Content of the invention] A cross ellipse and k out of a tube, has better heat transfer resistance with other heat transfer, smaller By. Thermally enhanced tubes, whose special circular transition segments are arranged in a periodic period, an angle of ~ 90 degrees; their ellipses or two straight lines plus two dimensions and approximately symmetrical ones can be of equal or unequal length or unequal length, and the length of each segment is the same as The ratio of the inner diameters of the inner tube sections is 1 ~ 2 · 5; the preferred value 爰 is that the main object of the present invention is to provide a two-section heat exchange enhancement tube based on the field synergy with the original shell; two. The cross section of a circular cross section and an elliptical load-bearing heat transfer enhancement tube is compared to a cross-section circular tube that flows at the same $ <fan> power consumption, 忐, or at the same heat transfer capacity. The ellipse of the segment adopts a standard circle or a shaped cross-section (the rectangle is equal in length, and the long-forked ellipse segment and ellipse tube segment are expanded to a quasi-elliptical multi-segment solitary tube with an enlarged diameter. The round pipe segments and the intersection between the elliptical and elliptical pipe segments and the 15 or approximate elliptic line fitting can be equal length for each round pipe segment> the length of each round pipe and the axis of the circle is 1. The present invention is a collection It is: If 'the ends are round pipe sections and the cross section shape of the adjacent oval pipe round pipe sections is formed into an oblong shape, including the moment length; the ratio of the diameters of the ellipsoidal transition sections of each oval pipe is 0.5 to 1 〇1 ~ 1 0; elliptical tube outer 568999 5. Description of the invention (3) 1.3 ~ 1.7; The inner surface, or outer surface, or inner and outer surface of the heat exchange tube can be smooth surface, or low rib surface or thread surface By. [Embodiment] i First, the "clear match" is not shown in the first figure is a schematic diagram of the cross-ellipse and circular cross-section heat transfer enhancement tube of the present invention, the heat exchange enhancement tube is composed of a number of round tube sections 1, elliptical tube sections 2. It consists of elliptical transition section 3 and imported round pipe 丨 section 4 at both ends. The length Lc of the round pipe section 1 is based on the requirements of pressure resistance, flow resistance, and installation of baffles or baffles. Generally, L c / d = 0.5 to 1 〇, where d I 疋 the inner diameter of the round pipe . The length of each circular tube segment 1 may be equal or different. The length Lo of the imported circular pipe section 4 at both ends can be taken from 2 to 4 times the thickness of the tube sheet, depending on the needs of the assembly with the tube sheet. Take the small value | on the premise that the assembly needs are met. The length Le of the elliptical tube segment 2 is taken according to the requirements for enhanced heat transfer, and generally Le / d = 1 to 10. The lengths of the respective elliptical tube segments 2 may be the same length or not. The cross-sectional shape of the elliptic tube segment 2 is a standard ellipse or an approximately ellipse or an oblate or multi-segment arc composed of two straight lines and two arcs and a symmetrical and oblate oblate shape. 7. The ratio I of the major axis A and the minor axis b of the outer diameter of the elliptical pipe section 2 is taken as A / B = 1; [~ 2.5, preferably A / B = 1. 3]. 7. There is an included angle c between the major axes of two adjacent elliptical pipe sections 2 β and the extended round pipe section 2 (see the second figure: No). 'C = 15 ~ 19 degrees, preferably c is equal to 60 degrees and 90 degrees ; If: The heat exchanger tubes in the heat exchanger are arranged on four sides, take (^ ⑽ degrees, if the heat exchanger tubes are arranged in a triangle 'take C = 60 degrees. The length Lt of the elliptical transition section 3 is Le / 2 > = Lt 丨 568999 5 、 Explanation of the invention (4) ~~~ —----——___, etc .; choose a small value, the length of each transition section 3 can be the same length j ^ Invention of the inner surface, outer surface or inner and outer of the heat transfer enhancement tube = : Red (eg t is rolled or moulded with a common round tube, or when it is dairy ,,,, or seam g: a person is formed), or it can be a low-rib surface or a thread (such as a low-rib tube or a threaded tube) Manufacturing), forming periodic soft 丨 ellipses, transverse ellipses and other structures (see the first to ^ I1 =; =; in the case that the degree should not be too high, this: a part of the contraction and another part of the section J :, 丨 = Secondary flow of vortex (please refer to Figure 3 again; same. With low rib surface :, officer: Co-intensifier tube of fluid velocity field and temperature gradient field ,: round one Circular cross-section intersection and scaling heat transfer: The replacement of the strong I f plane is called ', and the elliptical cross-section of the threaded circle crosses and shrinks to expand the circle. "Increase the circle-intersection of two types of circle-intersection: the role of 4" The effect of heat enhancement is better. This combination is suitable for working production body == parent fork elliptical surface heat transfer enhancement tube "is more suitable for smaller occasions 3 fibers and particles. And it has a large viscosity and flow velocity. 3; We can know that the present invention has the following advantages: The large-scale secondary current <vortex flow> obtained by the present invention is not dependent on the external 568999. 5 2 4 Description of the invention (5) The insert is generated, but contains & this The flow resistance is small. Caused by the change in the shape of the cross section of the β-axis along the way, 因 Γ 明 The secondary flow is the direction of the longitudinal direction and the horizontal direction of the phase I 相 ί The k-direction vortex <the direction of the vortex is perpendicular to the flow side, Attenuation; field = there is a better degree of synergy '. The present invention has better heat transfer enhancement performance than other eccentrics. Majesty, and the right by Λ, ..., said strong s, in the same pump <fan> function 牦Has better heat transfer performance. • Wide range, can be used for both single-phase fluid heat transfer enhancement and Inner ^ 2 phase transformation heat strengthening such as fortten, flow condensation, etc., is used for 6…, stubborn, and also enhances heat transfer outside the tube. • The “I” heat transfer enhancement tube due to the frequent changes in the shape and size of the tube Pigeon 々Γ ^ prevents the formation of dirt, and uses a heat exchange enhancement tube to make a 乂 & converter, the vibration of the official beam is much less than that of a normal circle control = parent converter, so that the use of heat exchanger enhancer The life expectancy is far too high. In summary, the present invention has not been found in the same product. Before the application, it has also met the requirements of the Patent Law, and proposed an invention patent for the olive. According to the law, it is only the present. In the preferred embodiment of the invention, when it is impossible to use the scope of the invention, "#Dafan, the equivalent changes and modifications made in the scope of the patent application and the inner valley of the heart sentence should still belong to the present invention.
第10頁 568999 五、發明說明（6) 明專利涵蓋之範圍内。Page 10 568999 V. Description of the invention (6) The scope of the patent covers.
ηιι 568999 圖式簡單說明 有關本發明為達上述目的，所採用之技術 功效，兹舉較佳可行實施例，並配合圖式說明如^及=他 審查委員更易於瞭解本發明之產生。 使 本發明圖式之簡單說明 第一圖 係本發明之結構示意圖。 第二圖 係本發明之橢圖管段長軸間之失角示意圖 第三圖 係本發明橢圓管段内的流動結構示意圖。 本發明圖號之簡單說明 圓管段 2 橢圓管段 橢圓過渡段 4 進口圓管段 長軸 B 短軸 夾角 d 内徑 圓管段長度 Lo 進口圓管段長度 橢圓管段長度 Lt 橢圓過渡段長度η 568999 Brief description of the drawings Regarding the technical effects of the present invention to achieve the above-mentioned objects, the preferred feasible embodiments are given together with the illustrations of the drawings such as ^ and =. Examining members can more easily understand the emergence of the present invention. To make the drawings of the present invention simple, the first drawing is a schematic diagram of the structure of the present invention. The second diagram is a schematic diagram of the missing angle between the major axes of the elliptical pipe segments of the present invention. The third diagram is a schematic diagram of the flow structure in the elliptical pipe segments of the present invention. Brief description of the drawing number of the present invention Round pipe section 2 Elliptical pipe section Elliptical transition section 4 Inlet round pipe section Long axis B Short axis Included angle d Inner diameter Round pipe section length Lo Inlet round pipe section length Elliptical pipe section length Lt Elliptical transition section length
AA
CC
LcLc
LeLe
第12頁Page 12