201104177 六、發明說明： 【發明所屬之技術領域】 本發明是關於用來將液體燃料及水混合的乳液燃燒用 混合器及使用該混合器之乳液燃燒用混合液體供給系統。 【先前技術】 以往以來，對液體燃料添加水混合成乳液狀後使其燃 燒之被稱爲乳液燃燒的技術爲眾所皆知。在乳液燃燒，藉 由當燃燒時產生水粒子的微小水蒸氣爆發，來將液體燃料 粒子細分化。藉此，具有燃料與空氣變得容易混合，可使 燃燒效率提升等的優點。又，亦可抑制NOx的產生。 爲了提高這種乳液燃燒的效果，將液體燃料與水充分 地混合成乳液狀爲佳。再者，藉由使用界面活性，雖可促 進液體燃料與水的乳液化，但是在削減成本的這一點上， 理想爲不使用界面活性劑，而是將液體燃料及水混合成乳 液狀爲佳。因此，被提案有藉由例如採用機械性設計、或 使用還原水（氧化還原電位降低的水）來作爲與液體燃料 混合的水，不須採用界面活性劑而可將液體燃料及水混合 成乳液狀之各種構造的乳液燃燒用混合器（參照例如專利 文獻1、2)。 [專利文獻1]特開平6-3 1 997 1号公報 [專利文獻2]特開2000-3 293 08号公報 【發明內容】 -5- 201104177 [發明所欲解決之課題] 但是，即使使用上述這種以往的乳液燃燒用混合器， 會有無法將液體燃料與水充分地混合成乳液狀之情況。又 ，在使用還原水之情況，亦會有需要用來進行產生還原水 之成本的問題。 本發明是有鑒於以上的問題點而開發完成的發明，其 目的是在於提供即使不使用界面活性劑、還原水等，也能 將液體燃料與水充分地混合成乳液狀之乳液燃燒用混合器 及使用此混合器的乳液燃燒用混合液體供給系統》 [用以解決課題之手段] 爲了解決上述課題，本發明的乳液燃燒用混合器，係 包含有：略筒狀體，從一方的端部之入口端朝另一方的端 部之出口端，使混合有液體燃料及水之混合液體朝一方向 流動之管狀部；和以將前述管狀部的內側隔成前述入口端 的側與前述出口端的側的方式配置於前述管狀部的內側， 且形成於連通於前述入口端的側及前述出口端的側之複數 個貫通孔的攪拌器，前述管狀部具有：呈內徑自前述入口 端的側朝前述出口端的側變小的形狀，比起前述攪拌器配 置於更靠近前述出口端的側之出口側縮徑錐形部；和比起 該出口側縮徑錐形部，以沿著圓周方向的方式形成於更靠 近前述出口端的側的內周面支出口側內周溝部。 再者，前述管狀部，在前述出口側縮徑錐形部與前述 出口側內周溝部之間，還具有其內徑較前述出口側內周溝 -6- 201104177 部之前述入口端的側的端部的內徑小、且與前述出口側縮 徑錐形部相鄰接的中間小內徑部，在前述中間小內徑部與 前述出口側內周溝部之境界’內徑自前述入口端的側朝前 述出口端的側未連續地擴大爲佳。 又，前述出口側內周溝部的內周側面的至少一部分， 係內徑自前述入口端的側朝前述出口端的側變小的錐形形 狀爲佳。 又*前述管狀部還具有：呈內徑自前述入口端的側朝 前述出口端的側變大的形狀，且比起前述攪拌器配置於更 靠近前述入口端的側之入口側擴徑錐形部爲佳》 又，前述攪拌器具有自前述入口端的側朝前述出口端 的側，外徑及內徑變大的略錐面體側面的形狀爲佳。 又，爲了解決上述課題，本發明之乳液燃燒用混合液 體供給系統，係具有：上述任一個所記載的乳液燃燒用混 合器；用來儲存前述混合液體之混合液體儲存槽；用來從 該混合液體儲存槽朝前述乳液燃燒用混合器供給前述混合 液體之混合液體供給部；以及將在前述乳液燃燒用混合器 被混合的混合液體回流至前述混合液體儲存槽之混合液體 回流部。 再者’前述混合液體回流部是具有配置於前述混合液 體儲存槽中之吐出部，其將前述混合液體朝前述混合液體 儲存槽的底面吐出爲佳。 又’前述混合液體回流部的前述吐出部係爲前端位於 前述混合液體儲存槽的底面的附近、且對前述底面呈垂直 201104177 的方向傾斜配置之管狀構件爲佳。 又，將前述混合液體供給部作爲第1混合液體供給部 ，還具有用來自前述混合液體儲存槽朝燃燒用器具供給前 述混合液體之第2混合液體供給部爲佳。 又，構成爲自前述乳液燃燒用混合器朝燃燒用器具直 接供給前述混合液體，前述混合液體回流部，使在前述乳 液燃燒用混合器被混合的混合液體中之未被供給到前述燃 燒用器具的剩餘之混合液體回流至前述混合液體儲存槽爲 佳。 [發明效果] 若依據本發明，能夠達到即使不使用界面活性劑、還 原水等，也能將液體燃料與水充分地混合成乳液狀之乳液 燃燒用混合器及乳液燃燒用混合液體供給系統。 【實施方式】 以下，參照圖面詳細地說明關於本發明的理想實施形 能〇 如圖1所示，本發明的第1實施形態之乳液燃燒用混 合器10’其特徵爲：包含有：略筒狀體，且自一方的端 部之入口端1 2 A朝另一方的端部之出口端1 2 B，使混合液 體燃料及水所構成的混合液體朝一方向流動之管狀部1 2 :和將管狀部1 2的內側隔成入口端1 2 A的側與出口端 1 2B的側的方式配置於管狀部1 2的內側，且形成於連通BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixer for emulsion combustion for mixing liquid fuel and water, and a mixed liquid supply system for emulsion combustion using the same. [Prior Art] Conventionally, a technique called emulsion combustion in which a liquid fuel is mixed with water to form an emulsion and then burned is known. In emulsion combustion, liquid fuel particles are subdivided by a small water vapor burst that produces water particles when burned. Thereby, there is an advantage that the fuel and the air are easily mixed, and the combustion efficiency can be improved. Moreover, the generation of NOx can also be suppressed. In order to enhance the effect of such emulsion combustion, it is preferred to sufficiently mix the liquid fuel with water to form an emulsion. Further, by using the interfacial activity, it is possible to promote the emulsion formation of the liquid fuel and water. However, in terms of cost reduction, it is preferable to use a surfactant instead of a surfactant, and it is preferable to mix the liquid fuel and water into an emulsion. . Therefore, it has been proposed to mix liquid fuel and water into an emulsion without using a surfactant, for example, by mechanical design, or using reduced water (water with reduced redox potential) as water mixed with liquid fuel. A mixer for emulsion combustion of various structures (see, for example, Patent Documents 1 and 2). [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei No. 2000-3 293 No. PCT Publication No. JP-A No. 2000-3 293. In such a conventional mixer for emulsion combustion, there is a case where the liquid fuel and water cannot be sufficiently mixed into an emulsion. Moreover, in the case of using reduced water, there is also a problem that the cost of producing reduced water is required. The present invention has been developed in view of the above problems, and an object of the invention is to provide a mixer for emulsion combustion which can sufficiently mix a liquid fuel and water into an emulsion without using a surfactant, reduced water or the like. And a mixed liquid supply system for emulsion combustion using the mixer. [Means for Solving the Problem] In order to solve the above problems, the emulsion combustion mixer of the present invention includes a slightly cylindrical body from one end portion. a tubular end portion in which the mixed end of the liquid fuel and water flows in one direction, and a side in which the inner side of the tubular portion is partitioned from the side of the inlet end and the side of the outlet end An agitator disposed on an inner side of the tubular portion and formed in a plurality of through holes that communicate with a side of the inlet end and a side of the outlet end, the tubular portion having a diameter that changes from a side of the inlet end toward a side of the outlet end a small shape which is smaller than the tapered portion of the outlet side disposed on the side closer to the outlet end than the agitator; and The outlet-side reduced-diameter tapered portion is formed on the inner peripheral surface branch-outlet inner peripheral groove portion on the side closer to the outlet end side in the circumferential direction. Further, the tubular portion further has a side having a smaller inner diameter than the inlet end of the outlet-side inner circumferential groove -6-201104177 between the outlet-side reduced-diameter tapered portion and the outlet-side inner circumferential groove portion An intermediate small inner diameter portion having a small inner diameter and adjacent to the outlet-side reduced-diameter tapered portion, and a boundary between the intermediate small inner diameter portion and the outlet-side inner circumferential groove portion from the side of the inlet end It is preferable that the side of the aforementioned outlet end is not continuously expanded. Further, it is preferable that at least a part of the inner peripheral side surface of the outlet-side inner circumferential groove portion has a tapered shape in which the inner diameter is smaller from the side of the inlet end toward the outlet end. Further, the tubular portion further has a shape in which the inner diameter increases from the side of the inlet end toward the outlet end, and is preferably larger than the tapered portion of the inlet side of the agitator disposed on the side closer to the inlet end. Further, the agitator preferably has a shape of a side surface of the slightly tapered body in which the outer diameter and the inner diameter are increased from the side of the inlet end toward the outlet end. Further, in order to solve the above problems, the mixed liquid supply system for emulsion combustion according to the present invention includes the emulsion combustion mixer according to any one of the above, and a mixed liquid storage tank for storing the mixed liquid; The liquid storage tank supplies the mixed liquid supply unit of the mixed liquid to the emulsion burning mixer; and the mixed liquid mixed in the emulsion combustion mixer is returned to the mixed liquid return portion of the mixed liquid storage tank. Further, the mixed liquid returning portion has a discharge portion disposed in the mixed liquid storage tank, and the mixed liquid is preferably discharged to the bottom surface of the mixed liquid storage tank. Further, the discharge portion of the mixed liquid returning portion is preferably a tubular member whose tip is located in the vicinity of the bottom surface of the mixed liquid storage tank and which is disposed obliquely to the bottom surface in the direction of vertical 201104177. Further, it is preferable that the mixed liquid supply unit is a first mixed liquid supply unit, and the second mixed liquid supply unit that supplies the mixed liquid to the combustion device from the mixed liquid storage tank. In addition, the mixed liquid is directly supplied to the combustion tool from the mixer for emulsion combustion, and the mixed liquid return portion is not supplied to the combustion device in the mixed liquid in which the emulsion combustion mixer is mixed. It is preferred that the remaining mixed liquid is refluxed to the aforementioned mixed liquid storage tank. [Effect of the Invention] According to the present invention, it is possible to obtain an emulsion combustion mixer and an emulsion combustion mixed liquid supply system in which a liquid fuel and water are sufficiently mixed into an emulsion without using a surfactant, a raw water or the like. [Embodiment] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. The emulsion burning mixer 10' according to the first embodiment of the present invention is characterized by: a tubular body, and from the inlet end 1 2 A of one end to the outlet end 1 2 B of the other end, the tubular portion 1 2 in which the mixed liquid of the mixed liquid fuel and water flows in one direction: The inner side of the tubular portion 12 is disposed on the inner side of the tubular portion 1 2 so as to be separated from the side of the inlet end 1 2 A and the side of the outlet end 1 2B, and is formed in communication.
-8- 201104177 於入口端12A的側及出口端12B的側之複數個貫通孔 14A的攪拌器14，管狀部12具有：呈內徑自入口端12A 的側朝出口端1 2B的側變小的形狀，配置於較攪拌器1 4 更靠近出口端1 2B的側之出口側縮徑錐形部1 2C ;和以沿 著圓周方向的方式，比起出口側縮徑錐形部12C形成於更 靠近出口端12B的側的內周面之出口側內周溝部12D。再 者，圖1中的箭號是顯示混合液體流動的方向。 管狀部12的結構是具有第1構件16、第2構件18、 第3構件20及第4構件22。這些第1構件1 6、第2構件 1 8、第3構件20及第4構件22，皆爲筒狀體，以此順序 ，自入口端1 2A的側朝出口端1 2B的側呈同軸地排列配 置，並相互螺合而結合著。 第1構件16的內周面具有：入口端12 A的側的小內 徑部1 6A ;第2構件1 8的側的大內徑部1 6B ;以及具內 徑自小內徑部朝大內徑部（自入口端1 2 A的側朝出口端 12B的側）變大的形狀，且配置於小內徑部16A及大內徑 部16B之間（比起攪拌器14更靠近入口端12A的側）之 入口側擴徑錐形部1 6C。再者，在大內徑部1 6B的第2構 件1 8側的端部附近，形成有用來供第2構件1 8結合之母 螺紋。又，第1構件16的外周面是呈具有入口端12A的 側的小外徑部16D、和第2構件1 8的側的大外徑部1 6E 之具階差的形狀，並在小外徑部1 6D形成有用來供外部 配管寺結合之公螺紋。-8- 201104177 The agitator 14 of the plurality of through holes 14A on the side of the inlet end 12A and the side of the outlet end 12B, the tubular portion 12 having a smaller inner diameter from the side of the inlet end 12A toward the outlet end 1 2B The shape is disposed on the outlet-side reduced-diameter tapered portion 1 2C on the side closer to the outlet end 1 2B than the agitator 14; and is formed in the circumferential direction in comparison with the outlet-side reduced-diameter tapered portion 12C. The outlet-side inner circumferential groove portion 12D of the inner circumferential surface on the side close to the outlet end 12B. Further, the arrows in Fig. 1 indicate the direction in which the mixed liquid flows. The tubular portion 12 has the first member 16, the second member 18, the third member 20, and the fourth member 22. The first member 16 , the second member 18 , the third member 20 , and the fourth member 22 are all cylindrical bodies, and in this order, the side from the side of the inlet end 1 2A toward the side of the outlet end 1 2B is coaxially Arrange the configurations and screw them together. The inner peripheral surface of the first member 16 has a small inner diameter portion 16A on the side of the inlet end 12A, a large inner diameter portion 16B on the side of the second member 18, and an inner diameter from the small inner diameter portion toward the inner portion. The diameter portion (the side from the side of the inlet end 1 2 A toward the outlet end 12B) has a large shape and is disposed between the small inner diameter portion 16A and the large inner diameter portion 16B (closer to the inlet end 12A than the agitator 14) The inlet side of the side) is expanded to have a tapered portion 1 6C. Further, in the vicinity of the end portion on the second member 18 side of the large inner diameter portion 16B, a female screw for coupling the second member 18 is formed. Further, the outer peripheral surface of the first member 16 has a shape having a stepped portion of the small outer diameter portion 16D having the side of the inlet end 12A and the large outer diameter portion 16E of the side of the second member 18, and is small The diameter portion 16D is formed with a male thread for coupling the external piping temple.
第2構件18之內徑是較第1構件16的小內徑部16A -9- 201104177 大、而較大內徑部16B稍小。在第2構件18之第1構件 16側的端部，一體地形成有攪拌器14。再者，在第2構 件1 8的外周面之第1構件1 6側的部分，形成有供第1構 件16結合之公螺紋，在第2構件18的內周面之第3構件 20側的端部附近，形成有供第3構件20結合之母螺紋。 在第3構件20的內周面之第2構件1 8側的端部，形 成有前述出口側縮徑錐形部12C。又，第3構件20的內 周面之比起出口側縮徑錐形部1 2C更靠近出口端1 2B側 的部分（出口側縮徑錐形部1 2 C與出口側內周溝部1 2D 之間的部分）係爲中間小內徑部1 2 E。再者，中間小內徑 部12E的內徑爲一定。又，中間部12E的內徑係與第1 構件1 6的小內徑部16A的內徑相等。又，在第3構件20 的外周面之第2構件1 8側的端部附近，形成有供第2構 件1 8結合之公螺紋，在外周面之第4構件22側的部分， 形成有供第4構件22結合之公螺紋。 第4構件22的內周面具有：第3構件20的側的大內 徑部22A ;出口端1 2B的側的小內徑部22B ;和配置於這 些大內徑部22 A及小內徑部22B之間（比起攪拌器1 4更 靠近出口端12B的側）的縮徑錐形部22C。再者，小內徑 部22B的內徑係與第1構件1 6的小內徑部1 6A的內徑、 第3構件2 0的中間小內徑部1 2 E的內徑相等。縮徑錐形 部22C係相當於前述出口側內周溝部1 2D的內周側面’ 內徑自大內徑部22A的側朝小內徑部22B的側（自入口 端1 2 Α的側朝出口端1 2Β的側）變小的錐形形狀。另外 ⑧ -10- 201104177 ，第3構件20之與縮徑錐形部22C相對向的軸 面是對軸方向呈垂直的平面，管狀部12係在中 部12E與出口側內周溝部12D之境界，內徑 1 2A的側朝出口端1 2B的側未連續地擴大。再者 徑部22A，形成有供第3構件20結合之母螺紋 4構件22的外周面係爲具有第3構件20的側的 2 2 D和出口端1 2 B的側的小外徑部2 2 E之具階差 在小外徑部22E形成有供外部配管等結合之公螺 攪拌器14係具有自入口端12A的側朝出口: 側，外徑及內徑變大的略錐面體側面的形狀。又 ，攪拌器14是一體地形成於構成管狀部12之j 18，配置成自第2構件18之入口端12A的側的 口端12A的側突出。在攪拌器14，形成有數十 例如20〜80左右）之貫通孔14A。貫通孔14A的 數百μπι~數mm程度（例如0.5~2.0mm左右）。 再者，作爲液體燃料，能夠使用例如重油、 油、廢油、酒精或二甲醚等。 其次，說明關於乳液燃燒用混合器1 〇的作月 在乳液燃燒用混合器1 〇，混合液體燃料及 混合液體，自管狀部12的入口端12A朝另一方 出口端12B向一方向流動。混合液體，首先從構 1 2之第1構件1 6的小內徑部1 6 A，經過入口側 部1 6C減速，然後到達大內徑部1 6B (攪拌器： 端12A的側）。混合液體在通過攪拌器14的貫 方向的端 間小內徑 自入口端 ，在大內 。又，第 大外徑部 的形狀， 紋。 瑞12B的 ，如上述 赛2構件 端部朝入 個左右（ 直徑係爲 煤油、輕The inner diameter of the second member 18 is larger than the small inner diameter portion 16A -9-201104177 of the first member 16, and the larger inner diameter portion 16B is slightly smaller. The agitator 14 is integrally formed at the end of the second member 18 on the first member 16 side. In the portion on the first member 16 side of the outer peripheral surface of the second member 18, a male screw for joining the first member 16 is formed, and on the third member 20 side of the inner peripheral surface of the second member 18 In the vicinity of the end portion, a female thread for coupling the third member 20 is formed. The outlet-side reduced-diameter tapered portion 12C is formed at an end portion of the inner peripheral surface of the third member 20 on the second member 18 side. Further, the inner peripheral surface of the third member 20 is closer to the outlet end 1 2B side than the outlet-side reduced-diameter tapered portion 1 2C (the outlet-side reduced-diameter tapered portion 1 2 C and the outlet-side inner peripheral groove portion 1 2D) The portion between them is the intermediate small inner diameter portion 1 2 E. Further, the inner diameter of the intermediate small inner diameter portion 12E is constant. Further, the inner diameter of the intermediate portion 12E is equal to the inner diameter of the small inner diameter portion 16A of the first member 16 . Further, in the vicinity of the end portion on the second member 18 side of the outer peripheral surface of the third member 20, a male screw to which the second member 18 is coupled is formed, and a portion on the side of the fourth member 22 of the outer peripheral surface is formed. The fourth member 22 is combined with a male thread. The inner peripheral surface of the fourth member 22 has a large inner diameter portion 22A on the side of the third member 20, a small inner diameter portion 22B on the side of the outlet end 1 2B, and a large inner diameter portion 22 A and a small inner diameter. The reduced-diameter tapered portion 22C between the portions 22B (the side closer to the outlet end 12B than the agitator 14). Further, the inner diameter of the small inner diameter portion 22B is equal to the inner diameter of the small inner diameter portion 16A of the first member 16 and the inner diameter of the intermediate small inner diameter portion 1 2E of the third member 20. The reduced-diameter tapered portion 22C corresponds to the inner peripheral side surface of the outlet-side inner circumferential groove portion 1 2D. The inner diameter is from the side of the large inner diameter portion 22A toward the side of the small inner diameter portion 22B (the side from the inlet end 1 2 Α toward the outlet) The side of the end 1 2 ) has a tapered shape. Further, 8-10-201104177, the axial surface of the third member 20 opposed to the reduced-diameter tapered portion 22C is a plane perpendicular to the axial direction, and the tubular portion 12 is at the boundary between the central portion 12E and the outlet-side inner circumferential groove portion 12D. The side of the inner diameter 1 2A toward the outlet end 1 2B is not continuously expanded. Further, the diameter portion 22A is formed with the outer peripheral surface of the female screw 4 member 22 to which the third member 20 is joined, and the small outer diameter portion 2 having the side of the second member 20 and the side of the outlet end 1 2 B 2 2 E has a step in the small outer diameter portion 22E, and a male screw agitator 14 for combining external piping or the like has a side from the inlet end 12A toward the outlet: a side, an outer diameter and an inner diameter of a slightly tapered body The shape of the side. Further, the agitator 14 is integrally formed in the j 18 constituting the tubular portion 12, and is disposed to protrude from the side of the mouth end 12A on the side of the inlet end 12A of the second member 18. In the agitator 14, a through hole 14A of several tens, for example, about 20 to 80 is formed. The number of the through holes 14A is several hundred μm to several mm (for example, about 0.5 to 2.0 mm). Further, as the liquid fuel, for example, heavy oil, oil, waste oil, alcohol or dimethyl ether can be used. Next, the description will be given of the month for the emulsion combustion mixer 1 In the emulsion combustion mixer 1 , the liquid fuel and the mixed liquid are mixed, and flow from the inlet end 12A of the tubular portion 12 toward the other outlet end 12B in one direction. The mixed liquid is first decelerated from the small inner diameter portion 16A of the first member 16 of the structure 12 through the inlet side portion 16C, and then reaches the large inner diameter portion 16B (the side of the agitator: the end 12A). The mixed liquid has a small inner diameter between the ends passing through the direction of the agitator 14 from the inlet end, and is large. Further, the shape of the largest outer diameter portion is curved. Rui 12B, as mentioned above, the end of the 2 component is facing to the left and right (the diameter is kerosene, light
水所成的 的端部之 成管狀部 擴徑錐形 .4的入口 通孔1 4 A -11 - 201104177 之際會加速’自各貫通孔14A噴出的混合液體，會一邊 相互地撞擊、混合一邊與出口側縮徑錐形部1 2 C相撞擊。 又’混合液體藉由通過攪拌器14的貫通孔14A，成爲空 化的狀態。藉此’混合液體被顯著地攪拌，液體燃料的粒 子分離’使得水的粒子變得容易進入到液體燃料的粒子之 間’而液體燃料與水之油中水滴型的乳液化行進。 接著’混合液體經過出口側縮徑錐形部1 2C流入到中 間小內徑部1 2E。此時，混合液體藉由管狀部丨2的內徑 的改變而被攪拌，液體燃料與水之乳液化更進一步行進， 又，抑制了液體燃料與水之分離。 接著’混合液體從中間小內徑部1 2 E經過出口側內周 溝部1 2 D，流入到構成管狀部1 2之第4構件2 2的小內徑 部2 2 B。此時’混合液體藉由出口側內周溝部1 2 D之內徑 改變等，被更進一步攪拌。特別是因出口側內周溝部1 2D 的內周側面是與出口側縮徑錐形部1 2 C同樣地，其內徑自 入口端1 2 A的側朝出口端1 2 B的側變小的錐形形狀，所 以，混合液體是與在出口側縮徑錐形部1 2 C同樣地，會與 出口側內周溝部12D的錐形形狀的內周側面撞擊，進而 被顯著地攪拌。又，因在中間小內徑部1 2 E與出口側內周 溝部1 2D之境界，內徑自入口端1 2A的側朝出口端12B 的側未連續地擴大，所以，藉由這一點，也使混合液體被 顯著地攪拌。藉此，液體燃料與水之油中水滴型的乳液化 更進一步行進。 如此，乳液燃燒用混合器1 〇，因除了入口側擴徑錐 (S) -12- 201104177 形部16C、攪拌器14、出口側縮徑錐形部12C外，還具 備有出口側內周溝部1 2 D，所以，能夠將液體燃料與水充 分地混合成乳液狀。例如，即使不使用界面活性劑、還原 水等，也能夠將液體燃料與水充分地混合成乳液狀。 其次，說明關於本發明的第2實施形態。 在前述第1實施形態，構成管狀部12之第4構件22 的縮徑錐形部22C和第3構件20之與縮徑錐形部22C相 對向的軸方向的端面接近，縮徑錐形部22C相當於出口側 內周溝部12D的內周側面的大致全部。 相對於此，如圖2所示，在本第2實施形態，於在第 4構件22的縮徑錐形部22C和第3構件20之與縮徑錐形 部2 2C相對向的軸方向的端面之間，具有一定的軸方向的 間隙，縮徑錐形部22C僅構成出口側內周溝部1 2D的內 周面的一部分，出口側內周溝部12D的內周面之縮徑錐 形部22C以外的部分之內徑爲一定。其他的結構是與前述 第1實施形態相同，在此針對與圖1賦予相同的圖號並省 略其說明。 如此，在縮徑錐形部22C僅構成出口側內周溝部1 2D 的內周側面的一部分，出口側內周溝部12D的內周面之 縮徑錐形部22C以外的部分之內徑爲一定之情況，亦可將 液體燃料與水充分地混合成乳液狀。 其次，說明關於本發明的第3實施形態。 在前述第1及第2實施形態，在構成管狀部1 2之第 4構件22形成有縮徑錐形部22C，縮徑錐形部22C構成 -13- 201104177 出口側內周溝部1 2D的內周側面的全部或一部分。 相對於此，如圖3所示’在本第3實施形態，在第4 構件22的大內徑部22A與小內徑部22B之間，不存在有 縮徑錐形部22C ’而出口側內周溝部1 2D的內周側面的內 徑爲一定。其他的結構與前述第1及2實施形態相同，在 此針對與圖1、2賦予相同的圖號並省略其說明。 如此，即使在出口側內周溝部1 2D的內周側面的內 徑爲一定之情況’亦可將液體燃料與水充分地混合成乳液 狀。 其次，說明關於本發明的第4實施形態。 在前述第1實施形態，於構成管狀部12之第4構件 2 2，形成有內徑自入口端1 2 A的側朝出口端1 2 B的側變 小的錐形形狀的縮徑錐形部22C，第3構件20之與縮徑 錐形部22C相對向的軸方向的端面係對軸方向呈垂直的平 面，縮徑錐形部22C相當於出口側內周溝部1 2D的內周 側面的大致全部。 相對於此，如圖4所示，本第4實施形態，於第4構 件22的大內徑部22A與小內徑部22B之間，不存在有縮 徑錐形部。另外，在第3構件20之出口端12B的側的端 部，形成有內徑自入口端1 2A的側朝出口端1 2B的側變 大之錐形形狀的擴徑錐形部20A，擴徑錐形部20A構成出 口側內周溝部12D的內周側面。 如此，即使在出口側內周溝部1 2D的內周側面係爲 內徑自入口端1 2A的側朝出口端1 2B的側變大的錐形形 201104177 狀的擴徑錐形部20A之情況’亦可將液體燃料與水充分 地混合成乳液狀。 再者，在前述第1〜第4實施形態，管狀部12的結構 爲具有第1構件16、第2構件18、第3構件20及第4構 件2 2，但是，管狀部的結構不限於此。例如，管狀部亦 可爲單一構件所組成之結構。又，管狀部亦可爲由2或3 個構件所組成之結構。又，管狀部亦可爲5個以上的構件 所組成之結構。 又，在前述第1〜第4實施形態，攪拌器1 4是一體地 形成於構成管狀部1 2之第2構件1 8，但是，攪拌器亦可 藉由螺合等結合於管狀部。 又，在前述第1〜第4實施形態，攪拌器14是具有自 入口端12A的側朝出口端12B的側，外徑及內徑變大的 略錐面體側面的形狀，但是亦可使用其他形狀的攪拌器。 例如，亦可使用對管狀部12的軸方向呈略垂直的圓板形 狀且形成有軸方向的貫通孔的構造之攪拌器。 其次，說明關於本發明的第5實施形態》 本第5實施形態，是關於如圖5及6所示之乳液燃燒 用混合液體供給系統3 0。乳液燃燒用混合液體供給系統 3〇 ’係具有：前述第卜第4實施形態中任一個形態所記 載之乳液燃燒用混合器1 〇 ;用來儲存混合液體之混合液 體儲存槽34;用來自混合液體儲存槽34對乳液燃燒用混 合器1 〇供給混合液體之第1混合液體供給部3 6 ;用來將 在乳液燃燒用混合器10被混合的混合液體回流至混合液 -15- 201104177 體儲存槽34之混合液體回流部38 ;以及用來自混合液 儲存槽34朝燃燒用器具32供給混合液體之第2混合液 供給部40。 且’乳液燃燒用混合液體供給系統30還具有：用 儲存（與水混合前的）液體燃料之液體燃料儲存槽42 自液體燃料儲存槽42朝混合液體儲存槽34供給液體燃 用之液體燃料供給部44 ;以及用來對混合液體儲存槽 供給水之水供給部4 6。 燃燒用器具3 2係爲例如噴燈，設置於溫室用加溫 、溫風鍋爐單元等的鍋爐、熔融爐、焚化爐等。 混合液體儲存槽3 4係爲略圓筒形之罐狀體，底 34A略呈平面。混合液體儲存槽34，在底面34A的附 ，具備有排洩用閥34B。且，混合液體儲存槽34具備 浮子感應器48。浮子感應器48具備有第1浮子48A、 2浮子48B、第3浮子48C，這3個浮子依此順序由上 下呈同軸地排列設置著。第1浮子48A是用來檢測混 液體的液面的上限高度。第2浮子4 8 B是用來在初期狀 ，僅液體燃料或水的先被供給之情況，檢測該液面的高 。第3浮子48C是用來檢測例如混合液體的液面的下限 度。 第1混合液體供給部3 6具有：設置於混合液體儲 槽34的底面34A的附近之閥36A、泵浦36B、用來將 36A及泵浦36B連接的配管36C、以及用來將泵浦36B 乳液燃燒用混合器10連接之配管36D。再者’在圖6 體 體 來 t 料 34 機 面 近 有 第 朝 合 態 度 高 存 閥 及 中 -16- 201104177 ，爲了說明上的方便，以二點鎖線顯示配管36D。 混合液體回流部38具有：設置於較混合液體儲存槽 34的上下方向的中央部稍爲上側之閥38A ;用來連接乳 液燃燒用混合器1〇及閥38A之配管38B;以及與閥38A 相連接，配置於混合液體儲存槽34中之吐出部38C，該 吐出部係將混合液體朝混合液體儲存槽34的底面34A吐 出。再者，在圖6中，爲了說明上的方便，以二點鎖線顯 示配管38B。吐出部38C係爲前端位於混合液體儲存槽 34的底面34A的附近、且對底面34呈垂直的方向傾斜配 匱之管狀構件。對底面34呈垂直的方向（垂直方向）之 吐出部3 8 C的傾斜角度例如爲2 5 °。 第2混合液體供給部40具有··設置於較混合液體儲 存槽34的上下方向的中央部稍下側之閥40A ;及用來將 閥40A及燃燒用器具32連接之配管40B。 液體燃料儲存槽42係爲與混合液體儲存槽34同樣之 略圓筒形的罐狀體。 液體燃料供給部44係爲用來連接液體燃料儲存槽42 與混合液體儲存槽34之配管，前端的吐出部44A係配置 於混合液體儲存槽34中，用來將液體燃料朝混合液體儲 存槽34的底面34A的附近吐出。又，液體燃料供給部44 具有流量計44B、固定栓44C、及電磁閥44D。 水供給部46係爲將自來水管、井、水槽（均未圖示 )等與混合液體儲存槽34連接之配管，前端的吐出部 46 A是配置於混合液體儲存槽34中，用來將水潮混合液 -17- 201104177 體儲存槽34的上部附近吐出。又，水供給部46具有減壓 閥46B、流量計46C、固定栓46D、及電磁閥46E。 其次，說明關於乳液燃燒用混合液體供給系統3 0的 作用。 在混合液體儲存槽34，自液體燃料儲存槽42經由液 體燃料供給部44供給液體燃料，又，自自來水管、井、 水槽等經由水供給部4 6供給水。此時，例如首先僅將液 體燃料供給至混合液體儲存槽34。當藉由第2浮子48B， 檢測到液體燃料的液面大達預定高度時，停止供給液體燃 料，並且開始供給水。再者，水因比重較液體燃料大，所 以’所吐出的水會朝液體燃料的下方移動，液體燃料會朝 上方移動。藉此，液體燃料與水會某種程度被攬拌。藉由 第1浮子4 8 A進行檢測，當檢測到混合液體的液面到達 預定高度時’停止進行水的供給。藉此，液體燃料與水以 預定的混合比儲存於液體燃料儲存槽42。再者，亦可首 先僅將水供給到混合液體儲存槽3 4，再藉由第2浮子4 8 B 進行檢測，當檢測到水的液面到達預定的高度時，停止水 的供給，並且開始進行液體燃料的供給。在此情況，因液 體燃料之比重較水小，所以，被吐出的液體燃料會朝上方 移動而水朝下方移動，液體燃料與水某種程度被攪拌。藉 由浮子感應器48、液體燃料供給部44的電磁閥44D、水 供給部46的電磁閥46E等，抑制液體燃料及水的供給量 ’能夠自動地調整液體燃料與水的混合比》再者，液體燃 料與水的混合比之調整，亦可藉由作業者的手動來進行。 ⑧ -18- 201104177 如此，被儲存於混合液體儲存槽34之由混合體燃料 及水所構成的混合液體，經由第1混合液體供給部3 6供 給至乳液燃燒用混合器10，在液燃燒用混合器10，如述 第1〜第4實施形態所說明，被充分地混合成乳液狀。在 液燃燒用混合器10被混合成乳液狀之混合液體，經由液 體回流部3 8回流至混合液體儲存槽3 4。合液體，自合液 體回流部3 8的吐出部3 8 C朝混合液體儲存槽3 4的底面 34A吐出，在此，混合液體被攪拌。特別是因吐出部38C ，其前端位於混合液體儲存槽34的底面34A的附近、且 對底面3 4呈垂直的方向傾斜配置，所以，可提高攪拌混 合液體之效果。藉此，可進一步促進液體燃料與水之乳液 化。又，可抑制液體燃料與水之分離。如此，藉由混合液 體在混合液體儲存槽3 4與乳液燃燒用混合器1 〇之間循環 ，既可保持混合液體被充分地乳液化的狀態，亦可將其儲 存到混合液體儲存槽34。再者，被乳液化後的混合液體 不容易分離成液體燃料與水。特別是液體燃料與水之混合 比（容積比）爲85 (液體燃料）：15 (水）〜90 (液體燃 料）：1 〇 (水）左右，則，能夠抑制乳液化之混合液體再 次分離成液體燃料與水之效果高。 儲存於混合液體儲存槽3 4之被充分地乳液化的混合 液體的一部分，經由第2混合液體供給部40供給至燃燒 用器具3 2而進行燃燒。混合液體，因被充分地乳液化’ 液體燃料成爲極小微粒子，所以容易與氧氣接觸。因此’ 能夠抑制C Ο產生，能夠達到完全燃燒或接近完全燃燒之 -19- 201104177 燃燒。 再者，藉由混合液體供給燃燒用器具32並進行燃燒 ，儲存於混合液體儲存槽34之混合液體的量會減少。胃 了補足此減少量，對混合液體儲存槽34，自液體燃料n 存槽42經由液體燃料供給部44供給液體燃料，又，自自 來水管、井、水槽等經由水供給部46供給水。例如，藉 由第3浮子48C進行檢測，當檢測到混合液體的液面到達 預定的下限高度時，開始朝混合液體儲存槽34供給液體 燃料及水。藉此，在燃燒用器具32可持續地進行完全燃 燒或接近完全燃燒之燃燒。 其次，說明關於本發明的第6實施形態。 前述第5實施形態之乳液燃燒用混合液體供給系統 30’係將在乳液燃燒用混合器10被混合的所有混合液體 經油混合液體回流部3 8回流至混合液體儲存槽3 4。 相對於此’如圖7所示，本第6實施形態之乳液燃燒 用混合液體供給系統5 0係構成爲自乳液燃燒用混合器i 0 朝燃燒用器具3 2直接供給混合液體，混合液體回流部3 8 係構成爲將在乳液燃燒用混合器1 0被混合的混合液體中 未供給到燃燒用器具3 2的剩餘的混合液體回流至混合液 體儲存槽34。再者’不具備有第2混合液體供給部。其 他的結構是與前述第5實施形態之乳液燃燒用混合液體供 給系統3 0 ’相同’針對相同構件賦予與圖5及6相同圖 號，並省略其說明。 如此’即使在構成爲自乳液燃燒用混合器1 〇朝燃燒 ⑧ -20- 201104177 用器具32直接供給混合液體，混合液體回流部38將在乳 液燃燒用混合器10被混合的混合液體中之未供給到燃燒 用器具32之剩餘的混合液體回流至混合液體儲存槽34的 情況’在乳液燃燒用混合器10，混合液體，被充分地乳 液化，液體燃料成爲極小微粒子，供給至燃燒用器具3 2 ’因此’當燃燒時，液體燃料與氧氣容易接觸。因此，能 夠抑制CO產生，能夠達到完全燃燒或接近完全燃燒之燃 燒。 [實施例] 使用前述第5實施形態之圖5及6所示的乳液燃燒用 混合液體供給系統3 0，進行燃燒實驗。再者，乳液燃燒 用混合器10，係使用前述第1實施形態之圖1所示的結 構之混合器。主要的實驗條件如下。 氣溫：約2 0 °C 風速：約2 m 液體燃料：A重油 水：井水（非還原水） 混合比（容積比）：87 ( A重油）：13 (水） 小內徑部1 6A、22B、中間小內徑部1 2E的內徑（直 徑）：1 2 m m 大內徑部16B的內徑（直徑）：29mm 攪拌器14的貫通孔14A的內徑（直徑）：lmm 攪拌器14的貫通孔“A的數量：51 -21 - 201104177 攪拌器14的前端平面部的直徑：7mm 第2構件18的內徑（直徑）：24mm 大內徑部22A的內徑（直徑）：27mm 泵浦36B的吐出量：16.5公升/時間 對底面34A呈垂直的方向之吐出部38C的傾斜角： 25° 燃燒用器具32 :溫室用加溫機 HK-402 5 (內盆（ Nepon)(股）製） 排氣溫度測定用熱電偶：具端子箱之熱電偶T08型K (東京熱學（股）製） 測量計：SRF106AS (山武（Yamatake Corporation ) (股）製） 再者，未使用界面活性劑。又，燃燒用器具32設置 於屋外（非溫室內）。在以上的條件下，對燃燒用器具 3 2供給混合液體大約2小時，以燃燒用器具3 2燃燒混合 液體。首先，作爲予備燃燒，持續大約28分鐘，以燃燒 用器具32將混合液體燃燒，到排氣溫度大約成爲290〇c 。其次’進行本燃燒。具體而言，排氣溫度到達2 6 0 °C左 右爲止’斷續地大約1 0 0分鐘，以燃燒用器具3 2將混合 液體燃燒。再者，排氣溫度係爲溫室用加溫機的排氣口的 位置之溫度。又’在混合液體儲存槽3 4最初大約儲存4 5 公升的混合液體’途中不進行液體燃料、水的補給。間隔 數分鐘〜10數分鐘測定排氣溫度、混合液體儲存槽34內The end portion of the water is formed into a tubular portion, and the inlet through hole 1 4 A -11 - 201104177 accelerates the mixed liquid ejected from each of the through holes 14A, and collides and mixes with each other. The outlet side reduced diameter taper portion 1 2 C phase impact. Further, the mixed liquid is in a cavitation state by passing through the through hole 14A of the agitator 14. Thereby, the 'mixed liquid is significantly agitated, the particle separation of the liquid fuel is made such that the particles of water easily enter between the particles of the liquid fuel' and the droplet-type emulsion of the liquid fuel and the oil of water travels. Then, the mixed liquid flows into the intermediate small inner diameter portion 1 2E through the outlet side reduced diameter tapered portion 1 2C. At this time, the mixed liquid is stirred by the change in the inner diameter of the tubular portion 2, and the emulsion of the liquid fuel and water proceeds further, and the separation of the liquid fuel from the water is suppressed. Then, the mixed liquid flows from the intermediate small inner diameter portion 1 2 E through the outlet side inner circumferential groove portion 1 2 D to the small inner diameter portion 2 2 B of the fourth member 2 2 constituting the tubular portion 12 . At this time, the mixed liquid is further stirred by the change in the inner diameter of the inner peripheral groove portion 1 2 D on the outlet side. In particular, since the inner peripheral side surface of the outlet-side inner peripheral groove portion 1 2D is the same as the outlet-side reduced-diameter tapered portion 1 2 C, the inner diameter thereof becomes smaller from the side of the inlet end 1 2 A toward the side of the outlet end 1 2 B. In the tapered shape, the mixed liquid collides with the tapered inner circumferential side surface of the outlet-side inner circumferential groove portion 12D in the same manner as the outlet-side reduced-diameter tapered portion 1 2 C, and is also significantly agitated. Further, since the inner diameter of the intermediate small inner diameter portion 1 2 E and the outlet side inner circumferential groove portion 1 2D is not continuously expanded from the side of the inlet end 1 2A toward the outlet end 12B, therefore, by this point, The mixed liquid was stirred significantly. Thereby, the droplet type emulsion in the liquid fuel and the water oil proceeds further. In this manner, the emulsion burning mixer 1 is provided with an outlet side inner peripheral groove portion in addition to the inlet side expanded diameter taper (S) -12-201104177 shaped portion 16C, the agitator 14 and the outlet side reduced diameter tapered portion 12C. 1 2 D, therefore, the liquid fuel and water can be sufficiently mixed into an emulsion. For example, the liquid fuel and the water can be sufficiently mixed into an emulsion even without using a surfactant, reduced water or the like. Next, a second embodiment of the present invention will be described. In the first embodiment, the reduced-diameter tapered portion 22C of the fourth member 22 constituting the tubular portion 12 and the end surface of the third member 20 facing the reduced-diameter tapered portion 22C in the axial direction are approximated, and the tapered portion is reduced in diameter. 22C corresponds to substantially all of the inner circumferential side surface of the outlet-side inner circumferential groove portion 12D. On the other hand, as shown in FIG. 2, in the second embodiment, the reduced-diameter tapered portion 22C of the fourth member 22 and the axial direction of the third member 20 opposed to the reduced-diameter tapered portion 2 2C are formed. The end faces have a constant axial gap, and the reduced-diameter tapered portion 22C constitutes only a part of the inner peripheral surface of the outlet-side inner circumferential groove portion 1 2D, and the tapered portion of the inner peripheral surface of the outlet-side inner circumferential groove portion 12D. The inner diameter of the portion other than 22C is constant. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to those in Fig. 1 and the description thereof will be omitted. In the tapered portion 22C, only a part of the inner circumferential side surface of the outlet-side inner circumferential groove portion 1 2D is formed, and the inner diameter of the portion other than the reduced-diameter tapered portion 22C of the inner circumferential surface of the outlet-side inner circumferential groove portion 12D is constant. In this case, the liquid fuel and the water may be sufficiently mixed into an emulsion. Next, a third embodiment of the present invention will be described. In the first and second embodiments, the reduced diameter tapered portion 22C is formed in the fourth member 22 constituting the tubular portion 12, and the reduced-diameter tapered portion 22C constitutes the inner peripheral groove portion 1 2D of the outlet side of the -13-201104177. All or part of the side of the week. On the other hand, in the third embodiment, the reduced-diameter tapered portion 22C' and the outlet side are not present between the large inner diameter portion 22A and the small inner diameter portion 22B of the fourth member 22. The inner diameter of the inner peripheral side surface of the inner circumferential groove portion 1 2D is constant. The other structures are the same as those of the first and second embodiments, and the same reference numerals are given to FIGS. 1 and 2, and the description thereof will be omitted. In this manner, even if the inner diameter of the inner peripheral side surface of the inner peripheral groove portion 1 2D on the outlet side is constant, the liquid fuel and the water can be sufficiently mixed into an emulsion. Next, a fourth embodiment of the present invention will be described. In the first embodiment, the fourth member 2 2 constituting the tubular portion 12 is formed with a tapered tapered portion having a tapered inner diameter from the side of the inlet end 1 2 A toward the outlet end 1 2 B. 22C, the end surface of the third member 20 facing the reduced-diameter tapered portion 22C in the axial direction is a plane perpendicular to the axial direction, and the reduced-diameter tapered portion 22C corresponds to the inner peripheral side of the outlet-side inner peripheral groove portion 1 2D. Almost all. On the other hand, as shown in Fig. 4, in the fourth embodiment, the tapered portion is not formed between the large inner diameter portion 22A and the small inner diameter portion 22B of the fourth member 22. Further, at the end portion on the side of the outlet end 12B of the third member 20, a tapered tapered portion 20A having a tapered shape whose inner diameter increases from the side of the inlet end 1 2A toward the outlet end 1 2B is formed, and the diameter is expanded. The tapered portion 20A constitutes an inner peripheral side surface of the outlet-side inner circumferential groove portion 12D. In this case, even if the inner peripheral side surface of the inner peripheral groove portion 1 2D on the outlet side is a tapered shape 201104177-shaped expanded diameter tapered portion 20A whose inner diameter increases from the side of the inlet end 1 2A toward the side of the outlet end 1 2B' The liquid fuel and water can also be sufficiently mixed into an emulsion. In the first to fourth embodiments, the tubular portion 12 has the first member 16, the second member 18, the third member 20, and the fourth member 2, but the configuration of the tubular portion is not limited thereto. . For example, the tubular portion may also be a structure composed of a single member. Further, the tubular portion may be a structure composed of 2 or 3 members. Further, the tubular portion may have a structure composed of five or more members. Further, in the first to fourth embodiments, the agitator 14 is integrally formed in the second member 1 8 constituting the tubular portion 12, but the agitator may be coupled to the tubular portion by screwing or the like. Further, in the above-described first to fourth embodiments, the agitator 14 has a shape of a side surface of a slightly tapered body having a larger outer diameter and an inner diameter from the side of the inlet end 12A toward the outlet end 12B, but may be used. Other shapes of the mixer. For example, an agitator having a structure in which a circular plate shape of the tubular portion 12 is slightly perpendicular and a through hole in the axial direction is formed may be used. Next, a fifth embodiment of the present invention will be described. The fifth embodiment relates to a mixed liquid supply system 30 for emulsion combustion as shown in Figs. The mixed liquid supply system for emulsion combustion is characterized in that: the emulsion burning mixer 1 according to any one of the fourth embodiment; the mixed liquid storage tank 34 for storing the mixed liquid; The liquid storage tank 34 supplies the mixed liquid supply unit 1 to the first mixed liquid supply unit 3 of the mixed liquid for the emulsion combustion, and is used for refluxing the mixed liquid mixed in the emulsion combustion mixer 10 to the mixed liquid -15 - 201104177 The mixed liquid returning portion 38 of the tank 34 and the second mixed liquid supply portion 40 for supplying the mixed liquid from the mixed liquid storage tank 34 to the combustion tool 32. And the mixed liquid supply system 30 for emulsion combustion further has a liquid fuel supply tank 42 for supplying liquid fuel from the liquid fuel storage tank 42 to the mixed liquid storage tank 34 by a liquid fuel storage tank 42 for storing liquid fuel (before mixing with water). a portion 44; and a water supply portion 46 for supplying water to the mixed liquid storage tank. The combustion device 3 2 is, for example, a blower, and is installed in a boiler, a melting furnace, an incinerator, or the like for heating or warming a boiler unit for a greenhouse. The mixed liquid storage tank 34 is a substantially cylindrical can body, and the bottom 34A is slightly flat. The mixed liquid storage tank 34 is provided with a drain valve 34B attached to the bottom surface 34A. Further, the mixed liquid storage tank 34 is provided with a float sensor 48. The float sensor 48 is provided with a first float 48A, a float 48B, and a third float 48C. The three floats are arranged coaxially from top to bottom in this order. The first float 48A is an upper limit height for detecting the liquid level of the mixed liquid. The second float 4 8 B is used to detect the high level of the liquid surface in the initial state, in which only liquid fuel or water is supplied first. The third float 48C is used to detect, for example, the lower limit of the liquid level of the mixed liquid. The first mixed liquid supply unit 36 includes a valve 36A provided in the vicinity of the bottom surface 34A of the mixed liquid storage tank 34, a pump 36B, a pipe 36C for connecting 36A and the pump 36B, and a pump 36B for pumping 36B. The emulsion burning mixer 10 is connected to a pipe 36D. In addition, in the body of Fig. 6, the surface of the material 34 has a first-stage high-precision valve and a medium-16-201104177. For convenience of explanation, the pipe 36D is displayed by a two-point lock line. The mixed liquid return portion 38 has a valve 38A provided slightly above the center portion of the mixed liquid storage tank 34 in the vertical direction, a pipe 38B for connecting the emulsion combustion mixer 1 and the valve 38A, and a valve 38A. The discharge portion 38C is connected to the discharge liquid storage tank 34, and the discharge portion discharges the mixed liquid toward the bottom surface 34A of the mixed liquid storage tank 34. Further, in Fig. 6, the piping 38B is shown by a two-point lock line for convenience of explanation. The discharge portion 38C is a tubular member whose front end is located in the vicinity of the bottom surface 34A of the mixed liquid storage tank 34 and which is inclined in a direction perpendicular to the bottom surface 34. The inclination angle of the discharge portion 3 8 C in the direction perpendicular to the bottom surface 34 (vertical direction) is, for example, 25 °. The second mixed liquid supply unit 40 has a valve 40A provided slightly below the center portion of the mixed liquid storage tank 34 in the vertical direction, and a pipe 40B for connecting the valve 40A and the combustion tool 32. The liquid fuel storage tank 42 is a substantially cylindrical can body similar to the mixed liquid storage tank 34. The liquid fuel supply unit 44 is a pipe for connecting the liquid fuel storage tank 42 and the mixed liquid storage tank 34, and the discharge portion 44A at the front end is disposed in the mixed liquid storage tank 34 for directing the liquid fuel toward the mixed liquid storage tank 34. The bottom surface 34A is discharged near the bottom. Further, the liquid fuel supply unit 44 includes a flow meter 44B, a fixing plug 44C, and a solenoid valve 44D. The water supply unit 46 is a pipe that connects a water pipe, a well, a water tank (none of which is shown) to the mixed liquid storage tank 34, and the discharge portion 46A at the front end is disposed in the mixed liquid storage tank 34 for water. The tidal mixture -17- 201104177 is discharged near the upper portion of the body storage tank 34. Further, the water supply unit 46 includes a pressure reducing valve 46B, a flow meter 46C, a fixing plug 46D, and a solenoid valve 46E. Next, the action of the mixed liquid supply system 30 for emulsion combustion will be explained. In the mixed liquid storage tank 34, the liquid fuel is supplied from the liquid fuel storage tank 42 via the liquid fuel supply unit 44, and water is supplied from the water supply pipe, the well, the water tank or the like via the water supply unit 46. At this time, for example, only the liquid fuel is first supplied to the mixed liquid storage tank 34. When the liquid level of the liquid fuel is detected to be a predetermined height by the second float 48B, the supply of the liquid fuel is stopped, and the supply of water is started. Further, since the water has a larger specific gravity than the liquid fuel, the water discharged by the liquid moves toward the lower side of the liquid fuel, and the liquid fuel moves upward. Thereby, the liquid fuel and water will be mixed to some extent. The detection is performed by the first float 4 8 A, and when the liquid level of the mixed liquid is detected to reach the predetermined height, the supply of water is stopped. Thereby, the liquid fuel and water are stored in the liquid fuel storage tank 42 at a predetermined mixing ratio. Further, first, water may be supplied to the mixed liquid storage tank 34, and then detected by the second float 4 8 B. When the liquid level of the water is detected to reach a predetermined height, the supply of water is stopped, and the start is started. The supply of liquid fuel is performed. In this case, since the specific gravity of the liquid fuel is smaller than that of water, the liquid fuel to be discharged moves upward and the water moves downward, and the liquid fuel and water are stirred to some extent. By the float sensor 48, the electromagnetic valve 44D of the liquid fuel supply unit 44, the electromagnetic valve 46E of the water supply unit 46, and the like, the supply amount of the liquid fuel and water is suppressed, and the mixing ratio of the liquid fuel and the water can be automatically adjusted. The adjustment of the mixing ratio of the liquid fuel to the water can also be performed manually by the operator. 8-18-201104177 In this way, the mixed liquid composed of the mixed fuel and the water stored in the mixed liquid storage tank 34 is supplied to the emulsion combustion mixer 10 via the first mixed liquid supply unit 36, and is used for liquid combustion. The mixer 10 is sufficiently mixed into an emulsion form as described in the first to fourth embodiments. The mixed liquid in which the liquid combustion mixer 10 is mixed into an emulsion is returned to the mixed liquid storage tank 34 via the liquid return portion 38. The liquid is discharged, and the discharge portion 38C of the self-closing liquid return portion 38 is discharged toward the bottom surface 34A of the mixed liquid storage tank 34, and the mixed liquid is stirred. In particular, since the tip end portion 38C is disposed in the vicinity of the bottom surface 34A of the mixed liquid storage tank 34 and obliquely arranged in the direction perpendicular to the bottom surface 34, the effect of stirring the mixed liquid can be enhanced. Thereby, the emulsion of the liquid fuel and water can be further promoted. Moreover, the separation of the liquid fuel from the water can be suppressed. Thus, by circulating the mixed liquid between the mixed liquid storage tank 34 and the emulsion burning mixer 1 ,, the mixed liquid can be kept in a state of being sufficiently emulsified, or it can be stored in the mixed liquid storage tank 34. Further, the mixed liquid after the emulsification is not easily separated into a liquid fuel and water. In particular, the mixing ratio (volume ratio) of the liquid fuel to water is 85 (liquid fuel): 15 (water) to 90 (liquid fuel): 1 〇 (water) or so, the mixed liquid capable of suppressing the emulsification is separated again. The effect of liquid fuel and water is high. A part of the mixed liquid which is sufficiently emulsified in the mixed liquid storage tank 34 is supplied to the combustion tool 32 through the second mixed liquid supply unit 40 to be combusted. The mixed liquid is easily emulsified and the liquid fuel becomes extremely fine particles, so that it is easily contacted with oxygen. Therefore, it is possible to suppress the generation of C , and to achieve complete combustion or near complete combustion -19- 201104177 combustion. Further, by supplying the mixed liquid to the combustion tool 32 and burning, the amount of the mixed liquid stored in the mixed liquid storage tank 34 is reduced. In the mixed liquid storage tank 34, the liquid fuel is supplied from the liquid fuel storage tank 44 via the liquid fuel supply unit 44, and the water is supplied from the water supply pipe, the well, the water tank or the like via the water supply unit 46. For example, it is detected by the third float 48C, and when it is detected that the liquid level of the mixed liquid reaches a predetermined lower limit height, the supply of the liquid fuel and the water to the mixed liquid storage tank 34 is started. Thereby, the combustion apparatus 32 can continuously perform combustion of complete combustion or near complete combustion. Next, a sixth embodiment of the present invention will be described. In the mixed liquid supply system for emulsion combustion according to the fifth embodiment, all of the mixed liquid mixed in the emulsion combustion mixer 10 is returned to the mixed liquid storage tank 34 via the oil mixed liquid return portion 38. As shown in Fig. 7, the mixed liquid supply system for emulsion combustion according to the sixth embodiment is configured such that the mixed liquid is directly supplied from the emulsion combustion mixer i 0 to the combustion device 32, and the mixed liquid is refluxed. The portion 3 8 is configured to return the remaining mixed liquid that has not been supplied to the combustion tool 3 2 to the mixed liquid storage tank 34 in the mixed liquid in which the emulsion combustion mixer 10 is mixed. Furthermore, the second mixed liquid supply unit is not provided. The other configuration is the same as that of the mixed liquid supply system for emulsion combustion according to the fifth embodiment, and the same members are denoted by the same reference numerals as those of Figs. 5 and 6 and the description thereof will be omitted. Thus, even if the mixed liquid is directly supplied from the emulsion burning mixer 1 to the combustion apparatus 8 to 201104177, the mixed liquid returning portion 38 is not mixed in the mixed liquid in which the emulsion burning mixer 10 is mixed. When the remaining mixed liquid supplied to the combustion tool 32 is returned to the mixed liquid storage tank 34, the mixed liquid is mixed in the emulsion burning mixer 10, and the liquid fuel is sufficiently emulsified, and the liquid fuel becomes extremely fine particles and is supplied to the combustion tool 3 2 'So 'when burning, liquid fuel is in easy contact with oxygen. Therefore, it is possible to suppress the generation of CO and to achieve combustion of complete combustion or near complete combustion. [Examples] A combustion test was carried out by using the mixed liquid supply system 30 for emulsion combustion shown in Figs. 5 and 6 of the fifth embodiment. Further, the mixer for emulsion combustion 10 is a mixer using the structure shown in Fig. 1 of the first embodiment. The main experimental conditions are as follows. Temperature: approx. 20 °C Wind speed: approx. 2 m Liquid fuel: A heavy oil water: well water (non-reduced water) Mixing ratio (volume ratio): 87 (A heavy oil): 13 (water) Small inner diameter portion 1 6A, 22B, inner diameter (diameter) of the intermediate small inner diameter portion 1 2E: 1 2 mm inner diameter (diameter) of the large inner diameter portion 16B: 29 mm inner diameter (diameter) of the through hole 14A of the agitator 14: 1 mm agitator 14 Through-hole "Number of A: 51 -21 - 201104177 Diameter of the front end flat portion of the agitator 14: 7 mm Inner diameter (diameter) of the second member 18: 24 mm Inner diameter (diameter) of the large inner diameter portion 22A: 27 mm Pump The discharge amount of the Pu 36B: the inclination angle of the discharge portion 38C in the direction perpendicular to the bottom surface 34A of 16.5 liters/time: 25° The apparatus for combustion 32: The heating machine for the greenhouse HK-402 5 (Nepon) Thermocouple for measuring exhaust gas temperature: Thermocouple with terminal box T08 type K (Tokyo Thermal Co., Ltd.) Meter: SRF106AS (Yamatake Corporation) In addition, no surfactant is used. Further, the burning appliance 32 is installed outside the house (not in the greenhouse). Under the above conditions, the burning appliance 3 2 The mixed liquid is supplied for about 2 hours, and the mixed liquid is burned by the burning appliance 32. First, as the preliminary combustion, the mixed liquid is burned for about 28 minutes, and the mixed liquid is burned by the burning appliance 32 until the exhaust gas temperature is about 290 〇c. 'This combustion is carried out. Specifically, the exhaust gas temperature reaches about 260 °C until it is intermittently about 1000 minutes, and the mixed liquid is burned by the combustion appliance 32. Further, the exhaust gas temperature is the greenhouse. The temperature of the position of the exhaust port of the warmer is used. In the middle of the mixed liquid storage tank 34, the liquid fuel and water are not replenished during the initial storage of about 4 5 liters of mixed liquid. The interval is determined by several minutes to 10 minutes. Exhaust gas temperature, mixed liquid storage tank 34
-22- 201104177 的混合液體的殘餘量。測定結果如表1所示。又，本燃燒 之混合液體的總消耗量、含於混合液體的液體燃料（A重 油）之總消耗量、本燃燒之液體燃料的平均消耗量一倂記 載於表1。 -23- 201104177 [表i] 預備燃燒 本燃燒 時 間 排氣溫度 (°C) 混合液儲存量 (公升） 時 (時 刻 分） 經過時間 (時：分） 著火/滅火 11 30 - 著火 10.7 45.6 11 58 - 滅火 294.0 - 12 00 0 ： 00 著火 283.0 39.7 12 10 0 ： 10 1 283.0 37.9 12 20 0 ： 20 滅火 292.0 35.8 12 21 0 ： 21 著火 _ . 12 25 0 ： 25 1 263.0 - 12 30 0 ： 30 i 278.0 34.1 12 36 0 ： 36 滅火 291.0 - 12 37 0 ： 37 著火 • - 12 42 0 ： 42 1 256.0 32.3 12 52 0 ·· 52 滅火 287.0 30.2 12 54 0 ： 54 著火 - - 12 59 0 ： 59 滅火 243.0 _ 13 00 1 ： 00 著火 . 29.1 13 05 1 ： 05 滅火 244.0 _ 13 06 1 ： 06 著火 - - 13 11 1:11 滅火 241.0 27.2 13 12 1 : 12 著火 - - 13 17 1 ： 17 滅火 237.0 - 13 18 1 ： 18 著火 - - 13 22 1 ： 22 滅火 232.0 26.1 13 23 1 ： 23 著火 - 13 28 1 ： 28 滅火 238.0 - 13 29 1 ： 29 著火 - - 13 32 1 ： 32 丄 - 24.9 13 34 1 ： 34 滅火 234.0 - 13 35 1 ： 35 著火 - - 13 40 1 ： 40 滅火 235.0 23.4 16.3 本燃燒之混合液體的總消耗量（公升） 本燃燒之混合液體的總消耗量（公升） 14.2 本燃燒之混合液體的平均消耗量（公升/分） 0.142 201104177 [比較例] 對上述實施例，非混合液體，而是僅將液體燃料（A 重油）供給至燃燒用器具3 2。再者，氣溫、風速如以下 所述。-22- 201104177 The residual amount of mixed liquid. The measurement results are shown in Table 1. Further, the total consumption of the mixed liquid of the combustion, the total consumption of the liquid fuel (A heavy oil) contained in the mixed liquid, and the average consumption of the liquid fuel of the present combustion are shown in Table 1. -23- 201104177 [Table i] Pre-combustion combustion time Exhaust gas temperature (°C) When the mixed liquid storage capacity (liters) (time division) Elapsed time (hour: minute) Ignition/extinguishing 11 30 - Ignition 10.7 45.6 11 58 - Fire extinguishing 294.0 - 12 00 0 : 00 Fire 283.0 39.7 12 10 0 : 10 1 283.0 37.9 12 20 0 : 20 Fire extinguishing 292.0 35.8 12 21 0 : 21 Fire _ . 12 25 0 : 25 1 263.0 - 12 30 0 : 30 i 278.0 34.1 12 36 0 : 36 Fire extinguishing 291.0 - 12 37 0 : 37 Fire • - 12 42 0 : 42 1 256.0 32.3 12 52 0 ·· 52 Fire extinguishing 287.0 30.2 12 54 0 : 54 Fire - - 12 59 0 : 59 Fire extinguishing 243.0 _ 13 00 1 : 00 On fire. 29.1 13 05 1 : 05 Fire extinguishing 244.0 _ 13 06 1 : 06 Fire - - 13 11 1:11 Fire extinguishing 241.0 27.2 13 12 1 : 12 Fire - - 13 17 1 : 17 Fire extinguishing 237.0 - 13 18 1 : 18 Fire - 13 22 1 : 22 Fire extinguishing 232.0 26.1 13 23 1 : 23 Fire - 13 28 1 : 28 Fire extinguishing 238.0 - 13 29 1 : 29 Fire - 13 32 1 : 32 丄 - 24.9 13 34 1 : 34 Fire Extinguish 234.0 - 13 35 1 : 35 On Fire - - 13 40 1 : 40 Off 235.0 23.4 16.3 Total consumption of mixed liquids in this combustion (liters) Total consumption of mixed liquids in this combustion (liters) 14.2 Average consumption of mixed liquids in this combustion (liters per minute) 0.142 201104177 [Comparative Example] In the embodiment, the liquid fuel (A heavy oil) is supplied only to the combustion appliance 32 without mixing the liquid. Furthermore, the temperature and wind speed are as follows.
氣溫：23°C 風速：0m (無風） 其他的條件是與上述實施例相同下，與實施例同樣地 ，首先做爲予備燃燒，持續大約18分鐘，以燃燒用器具 32將混合液體燃燒，到排氣溫度成爲大約29(rc。其次， 進行本燃燒。具體而言，排氣溫度到達260〇C左右爲止， 斷續地大約105分鐘，以燃燒用器具32將混合液體燃燒 。又’與實施例同樣地，間隔數分鐘〜1 〇數分鐘測定排氣 溫度、混合液體儲存槽3 4內的混合液體的殘餘量。測定 結果如表2所示。 -25- 201104177 [表2] 時間 著火/滅火 排氣溫度 (°C) 混合液儲存量 (公升） 時 (時 刻 分） 經過時間 (時：分） 預備燃燒 14 07 - 著火 60 45.2 14 25 - 滅火 290.0 _ 本燃燒 14 27 0 00 著火 273.0 41.9 14 37 0 10 1 279.0 39.7 14 47 0 20 滅火 292.0 38.0 14 48 0 21 著火 - - 14 53 0 26 1 270.0 - 14 57 0 30 i - 36.3 15 03 0 36 滅火 287.0 - 15 05 0 38 著火 - - 15 10 0 43 1 254.0 34.2 15 20 0 53 滅火 282.0 32.6 15 22 0 55 著火 - - 15 27 1 00 滅火 238.0 - 15 28 1 01 著火 - - 15 33 1 06 滅火 238.0 30.9 15 34 1 07 著火 - - 15 39 1 12 滅火 243.0 - 15 41 1 14 著火 - - 15 43 1 16 i - 28.9 15 46 1 19 滅火 231.0 - 15 47 1 20 著火 - - 15 52 1 25 滅火 237.0 - 15 54 1 27 著火 - 27.8 15 59 1 32 滅火 241.0 - 16 00 1 33 著火 - - 16 05 1 38 滅火 240.0 - 16 06 1 39 著火 - 26.3 16 11 1 44 滅火 241.0 - 16 12 1 45 1 - 25.4 本燃燒之混合液體的總消耗量（公升） 16.5 本燃燒之混合液體的平均消耗量（公升/分） 0-157 201104177 如表1及2所示，雖實施例係與比較例相等的排氣溫 度，但實施例之液體燃料的平均消耗量係較比較例之液體 燃料的平均消耗量少。具體而言，比較例之液體燃料的平 均每分鐘之消耗量爲0.157公升，相對於此，實施例之液 體燃料之平均每分鐘之消耗量爲0.142公升。即，實施例 之液體燃料的平均消耗量係對比較例之液體燃料的平均消 耗量少大約9.6 %。如此，若依據本發明的實施例，確認 到即使不使用界面活性劑、還原水等，也能獲得乳液燃燒 的燃燒效率提升之效果。 [產業上的利用可能性] 本發明係可應用於例如溫室用加溫機、鍋爐、熔融爐 、焚化爐等。 【圖式簡單說明】 圖1是顯示本發明的第1實施形態之乳液燃燒用混合 器的構造之斷面圖。 圖2是顯示本發明的第2實施形態之乳液燃燒用混合 器的出口側內周溝部的形狀之斷面圖》 圖3是顯示本發明的第3實施形態之乳液燃燒用混合 器的出口側內周溝部的形狀之斷面圖。 圖4是顯示本發明的第4實施形態之乳液燃燒用混合 器的出口側內周溝部的形狀之斷面圖。 圖5是顯示本發明的第5實施形態之乳液燃燒用混合 -27- 201104177 液體供給系統的槪略構造之包含一部斷面的側面圖。 圖6是同平面圖。 圖7是顯示本發明的第6實施形態之乳液燃燒用混合 液體供給系統的槪略構造之斜視圖。 【主要元件符號說明】 1 〇 :乳液燃燒用混合器 12 :管狀部 12A :入口端 12B :出口端 12C :出口側縮徑錐形部 1 2D :出口側內周溝部 12E :中間小內徑部 14 :攪拌器 14A :貫通孔 16 :第1構件 16A :小內徑部 16B :大內徑部 16C :入口側擴徑錐形部 16D :小外徑部 16E :大外徑部 1 8 :第2構件 2 〇 :第3構件 22 :第4構件 -28- ⑧. 201104177 22A :大內 22B ··小內 2 2 C :縮徑: 22D :大外 2 2 E :小外: 30 ' 50 ：乳 3 2 :燃燒用 3 4 :混合液 3 4 A :底面 36 :第1混 3 8 :混合液 38C、44A、 40 :第2混 42 :液體燃 44 :液體燃 4 6 :水供給 徑部 徑部 錐形部 徑部 徑部 液燃燒用混合液體供給系統 器具 體儲存槽 合液體供給部 體回流部 46A :吐出部 合液體供給部 料儲存槽 料供給部 部 -29-Temperature: 23 ° C Wind speed: 0 m (no wind) Other conditions are the same as in the above-described embodiment. First, in the same manner as the embodiment, first, the combustion is performed for about 18 minutes, and the combustion liquid 32 is used to burn the mixed liquid. The exhaust gas temperature is about 29 (rc. Second, the combustion is performed. Specifically, the exhaust gas temperature reaches about 260 ° C, and the mixed liquid is burned intermittently for about 105 minutes, and the combustion liquid 32 is burned. In the same manner, the exhaust gas temperature and the residual amount of the mixed liquid in the mixed liquid storage tank 34 were measured at intervals of several minutes to 1 minute. The measurement results are shown in Table 2. -25- 201104177 [Table 2] Time ignition/ Extinguishing and extinguishing temperature (°C) When the mixture is stored (in liters) (time division) Elapsed time (hour: minute) Pre-combustion 14 07 - Fire 60 45.2 14 25 - Fire extinguishing 290.0 _ Burning 14 27 0 00 Fire 273.0 41.9 14 37 0 10 1 279.0 39.7 14 47 0 20 Fire extinguishing 292.0 38.0 14 48 0 21 Fire - - 14 53 0 26 1 270.0 - 14 57 0 30 i - 36.3 15 03 0 36 Fire extinguishing 287.0 - 15 05 0 38 Fire - - 15 10 0 43 1 254.0 34.2 15 20 0 53 Fire extinguishing 282.0 32.6 15 22 0 55 Fire - - 15 27 1 00 Fire extinguishing 238.0 - 15 28 1 01 Fire - - 15 33 1 06 Fire extinguishing 238.0 30.9 15 34 1 07 Fire - - 15 39 1 12 Fire extinguishing 243.0 - 15 41 1 14 Fire - - 15 43 1 16 i - 28.9 15 46 1 19 Fire extinguishing 231.0 - 15 47 1 20 Fire - - 15 52 1 25 Fire extinguishing 237.0 - 15 54 1 27 Fire - 27.8 15 59 1 32 Fire extinguishing 241.0 - 16 00 1 33 On fire - - 16 05 1 38 Fire extinguishing 240.0 - 16 06 1 39 Fire - 26.3 16 11 1 44 Fire extinguishing 241.0 - 16 12 1 45 1 - 25.4 Total consumption of mixed liquids in combustion (liters) 16.5 Burning Average consumption of mixed liquid (liters per minute) 0-157 201104177 As shown in Tables 1 and 2, although the examples are exhaust gas temperatures equivalent to those of the comparative examples, the average consumption of liquid fuels in the examples is comparatively comparative. The average consumption of liquid fuel is small. Specifically, the average consumption per minute of the liquid fuel of the comparative example was 0.157 liters, whereas the average consumption per minute of the liquid fuel of the example was 0.142 liter. That is, the average consumption amount of the liquid fuel of the example was about 9.6% less than the average consumption amount of the liquid fuel of the comparative example. As described above, according to the embodiment of the present invention, it was confirmed that the effect of improving the combustion efficiency of the emulsion combustion can be obtained without using the surfactant, the reduced water or the like. [Industrial Applicability] The present invention is applicable to, for example, a warming machine for a greenhouse, a boiler, a melting furnace, an incinerator, and the like. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the structure of an emulsion burning mixer according to a first embodiment of the present invention. 2 is a cross-sectional view showing the shape of the inner peripheral groove portion on the outlet side of the emulsion burning mixer according to the second embodiment of the present invention. FIG. 3 is a view showing the outlet side of the emulsion burning mixer according to the third embodiment of the present invention. A cross-sectional view of the shape of the inner circumferential groove portion. Fig. 4 is a cross-sectional view showing the shape of the inner circumferential groove portion on the outlet side of the emulsion burning mixer of the fourth embodiment of the present invention. Fig. 5 is a side elevational view showing a schematic cross-sectional view showing a schematic configuration of a liquid supply system for a liquid fuel supply system according to a fifth embodiment of the present invention. Figure 6 is the same plan view. Fig. 7 is a perspective view showing a schematic structure of a mixed liquid supply system for emulsion combustion according to a sixth embodiment of the present invention. [Explanation of main component symbols] 1 〇: Mixer for emulsion combustion 12: tubular portion 12A: inlet end 12B: outlet end 12C: outlet side reduced diameter tapered portion 1 2D: outlet side inner peripheral groove portion 12E: intermediate small inner diameter portion 14 : agitator 14A : through hole 16 : first member 16A : small inner diameter portion 16B : large inner diameter portion 16C : inlet side expanded diameter tapered portion 16D : small outer diameter portion 16E : large outer diameter portion 1 8 : 2 member 2 〇: 3rd member 22: 4th member -28- 8. 201104177 22A: Big inner 22B · · Small inner 2 2 C: Reduced diameter: 22D: Large outer 2 2 E: Small outer: 30 ' 50 : Milk 3 2 : Combustion 3 4 : Mixed liquid 3 4 A : Bottom surface 36 : First mixed 3 8 : Mixed liquid 38C, 44A, 40 : 2nd mixed 42 : Liquid burning 44 : Liquid burning 4 6 : Water supply diameter Diameter taper portion diameter portion liquid combustion mixed liquid supply system unit specific storage tank liquid supply unit body return portion 46A: discharge portion liquid supply portion material storage tank supply portion -29-