TW478952B - Filter element - Google Patents

Abstract

There is provided a filter element including a through hole for passage of a particle containing fluid to be filtered, the through hole having a composite cross-section perpendicular to a direction of the fluid passage which cross-section includes an enlarged portion for ensuring fluid flow and a reduced portion for capturing particles in the fluid.

Description

478952 A7 B7 V. Description of the invention 1 () Background of the invention The present invention relates to a filter element (or filter medium), which is used in a filtering device of a system for filtering fluids, for example, for water clarification (or purification). Filter device. In particular, the filter element is preferably used to remove particulate-like suspended materials in fluids such as water or aqueous solutions, suspensions, or emulsions. The fluid includes water from a container, pond, or river for fish farming, and water from a public bath, hot spring, or swimming pool. To date, naturally occurring materials (such as sand or stones), or small, porous materials (such as charcoal, filter paper, or sponges) are used as filter elements in a water treatment system where water is recycled and filter. This material is used as a filter medium and traps particles such as small dust or organic materials such as proteins or fats that become pollutants in water. Recently, a shaped object is mainly used as a filter element, which is made of synthetic resin into a cylinder or a sphere, and has a number of small holes on its surface. When the filter element is made of synthetic resin, its pore size can be selected, depending on the size of the particles to be captured during filtration. Filter elements can be designed according to the purpose of filtration. In addition, the surface area of the filter element can be increased, and many bacteria can attach to the filter element, which additionally produces a biological purification effect. Among them, the bacteria decompose organic materials in the water into inorganic materials. In this way, a filter element with a unique physical purification effect and also a biological purification effect has now become the standard. This paper size applies Chinese national standard (0 milk) 戍 4 specifications (210 father 297 mm)-4 (Please read the precautions on the back before filling out this page): Binding · Order-Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Consumption Cooperative 478952 A7 B7 V. Description of the invention 2 () When the filtering process is continuously performed using the filter element, the particles are trapped in the gap of the filter element, which causes blockage (or blockage), thereby increasing the water pressure of the water cycle, which leads to the reduction of the filter element Increased bacteria on the surface. To solve the problem of increased water pressure, it is necessary to frequently perform replacement or reverse flushing of the filter element to remove the blockage, which is troublesome and costly. Furthermore, when reverse flushing is performed, since the flow of flushing water does not pass through the blocked element, the blocked particles on the element are not easily removed. SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and an object thereof is to provide an innovative filter element to improve the structure of the filter element. This innovative filter element does not cause fluids, such as when the water pressure to be filtered is recirculated, and the bacteria that perform the biological purification function of the fluid are accelerated, and the fluid cleaning function can be continuously performed for a long time. What's more, this innovative filter element facilitates the removal of trapped particles during backwashing. According to the present invention, there is provided a filter element including at least one through hole for passing particles to be filtered. The through hole has a composite cross section perpendicular to the direction of the fluid channel. Flow-through 'and a reduced (or narrow) portion are used to capture particles in the fluid. A through-hole with a composite cross-section can be called a composite through-hole. The filter element of the present invention has a composite through hole through which fluid passes. The composite through hole is a hole having at least two open ends. When fluid is supplied to the composite through-hole through one open end, the fluid flows out through the other open end. The number of open ends can be greater than two. For example, 'When the fluid is supplied to the composite through-hole through an open end, the fluid shall be sized according to the Chinese National Standard (CNS) A4 (210X 297 mm) via its paper size. _ 5 _ (Please read the precautions on the back before filling in this page)

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7 V. Description of Invention 3 () Multiple open ends flow out. (Please read the precautions on the back before filling this page) Regarding the filter element of the present invention, the fluid is a liquid containing particulates that are to be filtered by the filter element, and this is usually an aqueous fluid containing particulates ( Such as water). Insoluble matter in particulate form can float or suspend (or emulsify) in a liquid, and these can be settled. It should be noted that the particles do not need to be in the shape of particles, and the particles may be fine (small) solid substances. For example, the particles in the present invention include micro organisms (such as bacteria), pollutants (such as dust, sand, and algae), waste (such as protein and fat), and the like. In addition to particles, the fluid may contain organic materials (such as proteins, fats, etc.) and / or inorganic materials, which are dissolved or dispersed in the fluid. In a preferred embodiment, the particles are broken down by bacteria spreading around the reduced portion. That is, the diffusing bacteria break down the particles captured by the surrounding area. After disintegration, the bacteria can break down other particles captured by the reduced portion. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. There are no special restrictions on the number of through holes with composite sections. For example, the filter element may include a single through-hole with one composite cross-section, or may include more through-holes each with a composite cross-section, such as two, three, four, five, or six composite through-holes. The filter element may further include other through holes without a composite cross section. This through hole may be, for example, a cylindrical hole. In the filter element of the present invention, "the direction of the fluid channel" means from a micro viewpoint, which means the direction along which the fluid passes through the through-hole, that is, the direction along which the fluid passes through the through-hole. This direction is roughly equivalent to the longitudinal direction of the composite via. '' A section perpendicular to the passage of fluid " means a section of a through-hole perpendicular to the direction of the fluid channel at a position in that direction in the composite through-hole, and this is equivalent to what a person skilled in the art generally considers One of the cross-sections of the through-hole. The paper dimensions are applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -6 478952 A7 ____B7_ V. Description of the invention 4 () (note the longitudinal extension of the fluid channel). From a practical point of view, the cross section may be a cross section at one end of the through hole (ie, the mouth of the open end). (Please read the notes on the back before filling out this page) Basically, fluid can pass through any part of the composite section. However, with regard to the filter element of the present invention, the cross section includes an enlarged portion where the fluid is easier to pass and a reduced portion where the fluid is difficult to pass, which is referred to in the present invention as a "composite cross section". Those skilled in the art can easily understand by intuition that the fluid can easily pass through the enlarged part, and it is more difficult to pass through the reduced part. Therefore, with regard to the filter element of the present invention, the `` enlarged portion is used to ensure that the fluid flows through a large portion of the composite section, the fluid is easy to pass here, and the `` reduced portion is used to capture the particles As a narrow part of the composite section, the fluid is difficult to pass here. When a section is shown to a person skilled in the art, he can easily (intuitively) decide whether the section includes an enlarged portion and a reduced portion. In other words, 'When the fluid flows through the composite section, the average flow rate is larger in the enlarged part and smaller in the reduced part. Note that the number of enlarged sections is not particularly limited and is at least one. The number of reduced portions is not particularly limited and is at least one. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs in the filter element of the present invention, it is basically sufficient that the cross section at least at one position in the direction of the fluid channel has an enlarged portion and a reduced portion (that is, a composite section) . In a preferred embodiment, the cross-section at each position along a portion of the through hole is a composite cross-section. In a more preferred embodiment, the cross section at each location along a larger portion of a through hole is a composite cross section. In a specific embodiment, the cross-sections at various locations along substantially the entire through-hole are composite cross-sections (ie, any cross-section along the through-hole is a composite cross-section). As a specific example of a cross-section including an enlarged portion and a reduced portion, a cross-section having a neck portion corresponds to the composite cross-section of the present invention. As another example, the ^ Zhang scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -7-~ 478952 A7 B7 ------------------ V. Invention Explanation 5 () 'The following shapes (or figures) correspond to the cross section of the present invention. Referring to FIG. 28, when an elastic ring (or circle) 51, such as a rubber ring (for example, a 10 ring), makes one point (A) on the ring approach the other ~ point (B) on the ring while applying a force to the same When the ring is deformed (as shown by the arrow), various shapes are obtained. For example, when the initial shape is a circle (as shown in Fig. 2 (a)), this elastic ring is deformed, and at the same time two points A and b on the diameter are close to the center C, the ring produces various neck shapes, as shown in Figures 28 (b) and 28 (c), which correspond to the composite cross section of the present invention. It should be noted that the initial shape may be a shape different from a circle, and this may be an ellipse, a triangle, a square, or a polygon. Moreover, the composite section of the present invention need not be made to have a curve, and this can be made to have a straight section, or it can be made to have a combination of a straight section and a curved section. For example, instead of using the ring 5 1, a square elastic shape 5 1 > can be used to produce a composite cross-section as shown in FIG. 2 0 Another representation of the surface can provide the following: when the two plane graphics partially overlap, and then the overlapping portion is removed, a graphics with a neck is generated; the outline (or peripheral line) of this graphics is equivalent to the invention Composite section. For example, as shown in FIG. 30 (a), when the two circles C and C / are partially overlapped, the closed curve (or solid line) formed by the arc of the non-overlapping part of the two circles 5 2 is equivalent to the present invention The composite section (overlapping part 5 5 is oblique, and the neck is marked by 5 4). The number of overlapping circles can be greater than two, such as three, four, or six. Except for circles, sectors, triangles, squares, or polygons can overlap, or any combination of these shapes (including circles) can overlap, as shown in Figures 30. (B) and 3 0 (c). ^ The paper size applies the Zhongguanjia Standard (CNS) A4 specification (21〇 < 297 public envy) ~ 478952 A7 B7 V. Invention Description 6 () (Please read the precautions on the back before filling this page) The filter element of the present invention may be made of any suitable material, such as a plastic material, a metal, or a ceramic material. The filter element may be a shaped object. When plastic materials are used, the filter element can be produced by injection molding or extrusion. The same die casting production method can be applied to magnesium alloy materials. In particular, polyvinyl chloride and vinyl acetate / vinyl chloride copolymers are suitable as filter elements. In the filter element of the present invention, because the flow rate of the fluid in the reduced portion is low, the particles contained in the fluid are captured by the filter element, and the fluid, particles, and / or bacteria in the atmosphere (such as the surrounding air) around the element The bacteria is attached to a part (wall part) near the reduced part of the filter element, and the bacteria easily increase. That is, this part of the filter element becomes a bacterial spreading part. The particles in the fluid are solid substances, which are not dissolved in the fluid, and these can be called pollutants, depending on their properties. For example, the particles can be bacteria contained in wastewater, dirt in bath water or boiling water. Note that particles often contain bacteria on or in them. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs The filter element of the present invention may not generally capture all particles contained in a fluid passing once, and it is sufficient that the filter element captures at least a part of the particles contained in the fluid. By repeatedly recirculating the fluid through a container containing the filter element of the present invention and performing at least partially capturing the particles, the amount (or number) of particles contained in the fluid is gradually reduced. The capture of particles is performed by the physical collision between the particles in the fluid and the filter element, and then the particles are attached to the filter element by physical attachment (adsorption) or by the collision of particles in the fluid and particles on the filter element. In one embodiment, the filter element of the present invention includes a plurality of through holes, each having a composite cross section, which is generally similar to the composite cross sections of other through holes. The filter element may further include other types of through holes. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -9-478952 A7 _____B7 _______ V. Description of Invention 7 () (Please read the notes on the back before filling this page) In an example The filter element of the present invention includes a plurality of through holes, and the direction of each through hole is different from that of other through holes. Thus, the fluid to be filtered by the filter element of the present invention passes the filter element in various directions. In one embodiment of the filter element, the through hole is branched into a plurality of channels. Thus, the fluid to be filtered by the filter element of the present invention passes the filter element in various directions. In one embodiment, the filter element of the present invention has a plurality of grooves' and preferably the long grooves are on the outer wall of the defining filter element. The number, direction, and shape and size of the grooves are not limited. Long grooves should be arranged side by side on the outer wall. In one embodiment, the filter element of the present invention includes at least one gap portion, which communicates between the outside of the through hole and the inside of the filter element. That is, the gap portion extends between the inner wall defining the through hole and the outer wall defining the filter element. In one embodiment of the filter element, the inner wall defining the through hole has a plurality of grooves, and is preferably a long groove. The number of grooves, direction, cross-sectional shape and size are not particularly limited. Long grooves should be arranged side by side on the inner wall. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs In one embodiment of the filter element, the through hole has multiple lengths along the fluid path, and each length is different. In other words, the length of a through-hole varies depending on where the length extends through the composite section. In this embodiment, the end opening of the through hole does not extend perpendicular to the fluid passage. In one embodiment, the filter element of the present invention has a plurality of through holes, each through hole has a uniform length, and the length of each through hole is different from the length of other through holes. In this way, the lengths of the through holes have different steps. In one embodiment, a filter element is produced by cutting a component with a tube having a hollow portion. The cross-section of the hollow portion is equivalent to the composite cross-section. Therefore, a paper size is formed to comply with the Chinese National Standard (CNS) A4 specification. (210X297 mm) ~~ 478952 A7 B7 V. Description of the second section of 8 () pieces of the invention, which form an angle with the axis of the tube (for example, 90 °, 60 °, etc.). Each side forms the open end of the through hole of the filter element of the present invention. In one embodiment of the filter element, the area and / or shape of the composite section of the through-hole of the present invention varies in the direction of the fluid passage. As a result of this change, the fluid can be temporarily held in the through hole. In one embodiment of the filter element, the through hole of the filter element of the present invention includes a device for holding fluid on the inner wall defining the through hole. In one embodiment, the exposed surface of the filter element of the present invention is coated with a film, which reacts chemically with the material contained in the fluid. This material contains particles and various materials dissolved in the fluid. As a result of this chemical reaction, the fluid is clear. In another embodiment, the exposed surface of the filter element of the present invention is coated with a thin film ′. This preferably accelerates the increase of bacteria by detoxifying the fluid. These two films can be combined. That is, the exposed surface can be partially coated with a previous film and partially coated with a film. In one embodiment, the filter element of the present invention is made of polyvinyl chloride resin. Brief Description of the Drawings Plaque I 1 (a): a perspective view showing an embodiment of the filter element of the present invention; β 1 (b): a perspective view showing an embodiment of the filter element of the present invention; FIG. 1 ( C) A perspective view of one embodiment of the filter element of the present invention is shown; FIG. 1 (d): A transparent G-scale scale of one embodiment of the filter element of the present invention is applicable to the Chinese national standard 210 × 297 public magic · M _ (Please read the precautions on the back before filling this page) ¾ Clothing--Ordered by the Intellectual Property Bureau of the Ministry of Economic Affairs, Printed by the Consumer Cooperatives 478952 A7 B7 V. Description of Invention 9 () View; Figure 2 (a) To display Figure 1 (a) The initial perspective of the filter element (please read the precautions on the back before filling this page), a perspective view of the stage, where the filtration has just started; Figure 2 (b): To display the one shown in Figure 1 (a) A perspective view of one stage of the filter element, in which particles have been captured during some period after the stage of FIG. 2 (a); FIG. 2 (c) shows one of the filter elements shown in FIG. 1 (a) A perspective view of a stage in which bacteria have spread during some period after the stage of FIG. 2 (b); FIG. 2 (d) To show a perspective view of one stage of the filter element shown in FIG. 1 (a), during some periods after the stage of FIG. 2 (c), bacteria have broken down some of the captured particles; FIG. 3 shows the present A perspective view of an embodiment of the filter element of the invention, in which a plurality of through holes are formed, each having a composite cross-section; FIG. 4 shows a perspective view of the filter element shown in FIG. 3, which is used to capture different sizes of Particles; Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 5: A perspective view showing one embodiment of the filter element of the present invention, wherein the through holes extend in various directions; Figure 6 (a): Figure 5 The perspective view of the filter element is shown to illustrate the function of the filter element to change the direction of the fluid flow. Figure 6 (b) 槪 An embodiment is shown in which the filter elements shown in Figure 5 are used in a stack for fluid purification ( (Such as water purification); Figure 7 槪 shows a perspective view of an embodiment of the filter element of the present invention, in which a through-hole branch; This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) _ 478952 A7 B7 Intellectual Property of the Ministry of Economic Affairs Printed by the employee consumer cooperative V. Description of the invention 10) 1 | Figure 8 (a) Note m is a perspective view of the filter element shown in Figure 7, and 1 1 I is used to describe the filter element points— * fluid is the flow of multiple fluids Function j 1 1 Fig. 8 (b) Essential—. Example, in which the filter element shown in Fig. 1 I used in a reactor and the filter element shown in Fig. 1 I 7 is used for fluid purification, read 1 I Fig. 9 read 1 (a) 槪 A perspective view of the filter element is shown in which the outer wall back δ 1 I has a plurality of grooves extending vertically. Note 1 1 I Figure 9 (b) 槪 A perspective view of the filter element is shown. 1 plane with multiple grooves extending horizontally _ Mounting Figure 9 (C) 槪 Enlarged section of V-groove j Page 1 1 Fig. 9 (d) 槪 Enlarge of U-groove Section 9 1 | Figure 1 0 (a) A perspective view I of the filter element shown in FIG. 9 is used to explain the function of the filter element to form other reduced and enlarged parts. F 1 Order figure 10 (b) 槪 To display the circled part X of figure 10 (a) 1 1 Enlarged view; 1 1 Figure 1 1 (a) 槪 To show the side view of the filter element of the present invention J The top and bottom surfaces of the filter element I in I are the same (I Figure 1 1 (b) 槪 To show Figure 1 1 (a) top view of the filter element 1 1 I, 1 1 Figure 1 2 (a) 槪 To show the filter element of the present invention-Embodiment 1 1 perspective view, which has-* gap portion > 1 I FIG. 1 2 (b) 槪 1 I perspective view showing an embodiment of the filter element of the present invention, which has— * gap portion 1 1 FIG. 1 3 Perspective view of the filter element 1 1 1 to illustrate that the filter element 3 and 5 have other flow channels Function j 1 1 1 This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -13-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7_ V. Description of the invention 1 纟) Figure 1 4 ( a) To show a perspective view of the filter element, wherein the inner wall of the through hole has a plurality of grooves extending vertically; Figure 1 4 (b): To show a perspective view of the filter element, where the inner wall of the through hole has Multiple grooves extending horizontally; Figure 1 4 (c) 槪 To show an enlarged section of a v-shaped groove; Figure 1 4 (d) 槪 To show an enlarged section of a u-shaped groove; Figure 1 5 槪 To show A perspective view of a filter element, in which the length of the through hole is partially different from the appearance of a first-order portion; Figure 16 (a) A side view of the filter element of the present invention is shown, in which the top surface and the bottom Both surfaces are bent; Figure 16 (b): to show the top view of the filter element shown in Figure 16 (a); Figure 17 (a) to show the side view of the filter element of the present invention, where ' Its top surface and bottom surface are both convex and curved; Fig. 17 (b): To show the top view of the filter element shown in Fig. 17 (a) Figure 18 shows an embodiment in which the filter elements shown in Figure 15 in a stack are used for fluid purification (such as water purification). Figure 19 (a) shows the filter element of the present invention. Perspective view, where 'three object units are connected, and each object unit has a through hole of uniform length; Figure 19 (b): To show the line A-A along the filter element shown in Figure 19 (a) The sectional view above; this paper size is applicable to China National Standard (CNS) A4 specification (210X297) _ μ-(Please read the precautions on the back before filling this page)

478952 A7 B7_ 5. Description of the invention β) Figure 2 0 槪 shows an embodiment in which the filter element shown in Figure 19 in a stack is used for fluid purification (such as water purification) > Figure 2 1 ( a) To show a perspective view of the filter element of the present invention, in which the object units are integrated and connected, each object unit has a through hole with a part of a different length, and the top surface of the filter element is inclined to the through hole, while the bottom surface is perpendicular to Through-hole; Figure 2 1 (b): to show a sectional view along the line A-A of the filter element shown in Figure 2 1 (a); Figure 2 2 (a) to show the filter element of the present invention A perspective view, in which the top surface of the filter element is inclined to the through hole, and the bottom surface is perpendicular to the through hole. Figure 2 2 (b): A perspective view of the filter element of the present invention is shown, in which 'the top surface and the bottom surface of the filter element The through hole is inclined, and the second surface extends parallel; FIG. 2 (c) shows a perspective view of the filter element of the present invention, in which the top surface and the bottom surface of the filter element are inclined to the through hole, and the second surface extends non-parallel. ; Figure 2 2 (d) 槪 To show a perspective view of a tubular object, The various filter elements of the present invention are produced by cutting off the object; FIG. 23 shows an embodiment in which the filter elements shown in FIG. 22 (a) in a stack are used for fluid purification (such as water purification) ） 上 ； Figure 24 (a): To show the perspective view of the filter element of the present invention, its paper size is applicable to the Chinese National Standard (CNS) M specification (210X297 male shame 1 ~: π _ '" (Please read first Note on the back, please fill in this page) _ · Installation · 4 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7 V. Invention Description 1 $), a retaining hole is provided as a through hole; Intellectual Property Bureau of the Ministry of Economic Affairs The employee consumer cooperative prints a graph 24 (b): To show the cross-sectional view along the filter element A — A shown in FIG. 24 (a), where the inner wall of the through hole is parabolic; Figure 2 4 ( c) 槪 To show the section along the line a-A of the filter element, where the inner wall of the through hole is stepped; Figure 2 5 槪 To show the perspective view of the filter element shown in Figure 24 to illustrate the through hole Function; Figure 2 6 (a): To show a perspective view of the filter element of the present invention, where 'form as The inner wall of one of the holding holes has a recessed portion; Fig. 26 (b): A cross-sectional view taken along line A-A of the filter element shown in Fig. 26 (a), in which the through hole is The inner wall has grooves, each with a U-shaped cross-section; Fig. 26 (c): A cross-sectional view taken along line A-A of the filter element shown in Fig. 26 (a), in which the through-hole The inner wall has grooves, each with a V-shaped cross-section; Fig. 26 (d): A cross-sectional view taken along line A-A of the filter element shown in Fig. 26 (a), in which the through-hole The inner wall has grooves, each with a C-shaped cross-section; Figure 2 7 槪 The cross-sectional view of the filter element shown in Figure 26 is shown to illustrate the function of the groove portion; ® 2 8 (a) 槪 To be explained The formation of the composite cross section of the through hole of the filter element of the present invention 'wherein, the elastic ring is in the initial stage before deformation; Figure 2 8 (b) 槪 The compound sink surface of the through hole of the filter element of the present invention is explained Formation of 'where the elastic ring is deformed to have a composite section;

(Please read the precautions on the back before filling this page)

、 1T 478952 A7 _______ _B7__ V. Description of the invention 14) Figure 2 8 (c) 槪 To illustrate the formation of the composite section of the through hole of the filter element of the present invention, in which the elastic ring is deformed by one step and has another · Composite cross-section; (Please read the precautions on the back before filling this page) Figure 2 9 (a) 槪 To explain the formation of the composite cross-section of the through hole of the filter element of the present invention, where the elastic square ring is deformed before deformation The initial stage; Figure 2 9 (b) to explain the formation of the composite cross section of the through hole of the filter element of the present invention 'wherein the elastic four corner ring is deformed to have a composite cross section. Figure 2 9 (c) The formation of the composite cross section of the through hole of the filter element of the present invention will be described. Among them, the elastic quadrangular ring is further deformed to have another composite cross section; FIG. The formation of the composite section, where the two circles partially overlap; Figure 30 (b): To illustrate the formation of the composite section of the through hole of the filter element of the present invention, in which a circle and a triangle partially overlap; _ 3 0 (c) 槪 To explain the composite of the through holes of the filter element of the present invention The formation of the cross section 'Among them, a quadrangle and a triangle partially overlap; printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs _ 3 1 (a) 槪 The formation of the composite cross section of the through hole of the filter element of the present invention' Among them, 'the initial stage of an elastic ring before deformation; and H 3 1 < b) 槪 explain the formation of the composite section of the through hole of the filter element of the present invention', wherein the elastic ring is deformed to have a composite section surface. Comparison table of main components 1 Filter element ^ Paper size applies to China) A4 specification (21〇 < 297 mm) _ 478952 A7 B7 V. Inventive work) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2 Shaped objects 3 Through hole 4 Enlarged portion 5 Reduced portion 6 Groove 7 Gap portion 1 1 Particle 1 2 Bacteria 1 4 Main 孑 L 1 5 Branch hole 1 6 Stepped portion 1 8 End surface 2 0 Tube-shaped object 2 1 Hollow part 2 8 longer unit 2 9 medium unit 3 〇 shorter unit 4 〇 cylindrical part 4 1 protruding part 4 2 detailed description of the embodiment of the embodiment With reference to the drawings, the present invention will be described in detail. The fourth embodiment of the filter element of the present invention is shown in a perspective view and is to be shown in FIG. 1. This paper size is applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) -18-(Please read the precautions on the back before filling this page ) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7 V. Description of the invention 1 $) (a) to 1 (d) 'In each embodiment, the filter element 1 is made of plastic material' metal 'or ceramic material A shaped object 2 is manufactured, and includes a through hole 3 with a composite cross section. In any embodiment, the through-hole 3 has a composite cross-section including at least one enlarged portion 4, which ensures the flow rate of the fluid passing through the through-hole 3. The through hole additionally contains at least one reduced portion 5 which captures particles in the fluid to be filtered. It should be noted that in each of the illustrated embodiments, the through-hole has a single reduced portion, but those skilled in the art will readily understand that the through-hole 3 may have multiple reduced portions 5. Moreover, when the fluid contains bacteria or the atmosphere surrounding the filter element contains bacteria, the reduced portion 5 provides a wall portion, and the surroundings may be a propagation area for bacteria. It can be seen from the drawings that the structure of the filter element 1 maintains fluid communication between the enlarged portion 4 and the reduced portion 5, the enlarged portion provides a wider channel, and the reduced portion provides a narrow channel. The filter element shown in Fig. 1 (a) is a shaped object 2, which is in the shape of a deformed short cylinder, which extends vertically. This has a through hole 3 extending vertically, and is composed of a generally cylindrical portion 40 extending vertically, and a protruding portion 41 protruding laterally from the cylindrical portion 40. The protruding portion 41 is configured to be narrowed toward its end. The composite section of the through hole 3 is composed of a generally circular enlarged portion 4 and a reduced portion 5 extending from the enlarged portion 4 from the outside. The enlarged portion 4 forms a cylindrical portion 40 'and the reduced portion 5 forms a convex portion 41. The illustrated embodiment has an outer wall which is configured to define the through hole along its inner wall so that the width between the outer wall and the inner wall is substantially uniform. In this way, the outer wall allows the Shanghai component to have a convex portion and a concave portion. As for the embodiment shown in Fig. 1 (a), the composite section of the filter element 1 has a paper size that conforms to the Chinese National Standard (CNS) A4 specification (210X297 mm)-19-(Please read the precautions on the back before filling (This page)

478952 A7 ____B7 V. Inventive Poem) Similar to a shape. When the two points D and E of the quite close position shown in ring 0 1 as shown in Figure 3 1 (a) are close to each other, the shape is obtained, as shown in Figure 31 (b), after which the upper part is flattened, as shown by the dotted line. The reduced portion 5 is equivalent to a flat portion, and at such a close point, and the enlarged portion 4 is equivalent to the remaining portion. The filter element shown in FIG. 1 (b) is a shaped object and has the shape of a vertically extending short cylinder, which has a through hole 3 extending vertically. In the embodiment shown, the composite section of the through hole 3 is partially overlapped. Two circles or ellipses are formed by removing the overlapping parts of the two circles. The neck formed by partial overlap is equivalent to a reduction of 5 and the rest is equivalent to an enlarged portion of 4. Reduce part 5 and expand part 4. The filter element shown in Fig. 1 (c) is obtained by providing the filter element shown in Fig. 1 (b) with a plurality of other through holes 3 extending vertically. Holes having different sizes are constructed as the other through holes 3, and their cross sections are generally circular or oval. The filter element shown in FIG. 1 (d) is a shaped object 2, the whole is a short cylindrical shape extending vertically, and has a through hole 3. The enlarged portion 4 is composed of a plurality of partition members 10, which extend toward the center of the cylinder. The reduced portion 5 is connected to the enlarged portion 4 at the center of the cylinder. In the embodiment shown, four partitions are constructed with their ends located near the center of the through hole 3. Each partition 10 has an enlarged portion 4 on both sides. In other representations, when four sectors are set and their corners (central corner portions) are partially overlapped, the outer shape of such overlapping sectors is equivalent to the composite section of the filter element shown in Fig. 1. (d). The partially overlapping part forms a reduced part 5, such as a neck. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) ~ -20- " ~ (Please read the precautions on the back before filling this page) Order 4 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7_ V. Description of the invention 1) The method of using the filter element of the present invention will be described below with reference to the filter element 1 shown in FIG. 1 (a) as an example. Note that the filter element of the present invention can be used as follows. A container contains filter elements. Each element should be stacked randomly, and then the fluid to be clarified and filtered is continuously supplied to the container, and the fluid is continuously drawn from the container. During the period when the fluid passes through the container, the fluid contained in the fluid The particles are captured by the filter element (especially the reduced portion). The withdrawn fluid is then supplied to the container (ie fluid recirculation). During fluid recirculation. The growth of bacteria around the particles being detained is mainly caused by the reduction. The container can be filled with a fluid (where the fluid passes through the element in bulk form), or a three-bed type (where the fluid passes through a film-shaped element on the element surface), or a combination of these two modes. Bacteria that perform particle decomposition can originate from at least one of fluids, particles, and the ambient atmosphere. That is, bacteria contained in the fluid can be attached to the element and increased 'bacteria contained in the particles attached to the element can be increased, or bacteria contained in the atmosphere can be attached to the element and increased. When the filter element is placed in a fluid flow containing particles to be filtered, a fluid containing the particles 11 (which is made of, for example, an organic material) flows through the through hole 3 of the filter element 1, as shown in Fig. 2 (a). Most of the particles 11 are not detained in the through hole 3 for the first time, but the particles are gradually captured by the through hole 3 (or the wall portion constituting the through hole 3) of the filter element. After the fluid stream is recirculated several times, the particles 11 captured by the reduced portion 5 increase, as shown in Fig. 2 (b). When the amount of particles captured near the reduced part 5 is close to a certain amount, then the particles contained in the fluid cannot be captured. The paper size applies the Chinese National Standards (CNs) A4 specification (210X297 mm) _ 21 (Please read the back first (Notes to fill in this page again), installation-478952 A7 B7 V. Description of the invention) 'And this may be expanded by section 4. When the fluid is recirculated, bacteria 1 2 (such as aerobic bacteria) appear around the captured particles, or shrink the wall portion around the portion 5 and spread here, as shown in Figure 2 (c) . Bacteria originate from the fluid, particles in the fluid, and / or the atmosphere around the filter element. Bacterial decomposition and shrinkage 5 The inorganic particles are the particles and / or materials dissolved in the fluid. Then, after the bacteria have decomposed the captured particles, the other particles are recaptured, and the captured particles are sequentially decomposed, and the amount of particles 11 in the fluid is reduced, as shown in FIG. 2 (d). This causes the fluid Clear effect. In a preferred embodiment, the filter element captures the particles 11 and the bacteria 12 surrounding the narrowed portion 5 decomposes the particles 11 and then the filter element captures the other particles which are decomposed by the bacteria 12 again. That is, a sequence is repeated in the filter element of the present invention: trapped particulates-bacterial decomposition-trapped particulates-bacterial decomposition. From the viewpoint of the above-mentioned clearing mechanism, the filter element may be referred to as a packaging element, which provides a particle capturing function and a bacterial transmission function, and the bacteria break down the fine particles, which results in a fluid clearing effect. When using the above-mentioned filter element 1 to perform fluid filtration, the enlarged portion 4 ensures the flow rate of the fluid, and avoids the excessive pressure of the fluid required for recirculation on the filter element, thereby preventing the bacteria transmitted in the through hole 1 2 from being too high. The fluid pressure is reduced. In this way, the clear function of the filter element is maintained for a long time. Furthermore, the guide particles 11 are guided from the enlarged portion 4 to the reduced portion 5 and are easily captured by the reduced portion 5. That is to say, the reduced portion 5 provides a physical clearing function. This captures particles 1 1 and the size of the raw paper executed by bacteria added around the reduced portion 5 is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm)- 22 · (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

478952 A7 _ B7 V. Description of the invention 2 ()) The function of the material is clear. When the reduced portion 5 is blocked by the particles 1 1 due to the reduction in the number of bacteria, the filter element is flushed in the reverse direction. During reverse flushing, since a sufficient amount of water flows through the enlarged portion 4, the clogged particles 11 are carried away by the water flow, so the filter element is effectively flushed. The other filter element of the present invention is shown in a perspective view in FIG. 3. The formed article 2 as one of the filter elements 1 has a plurality of through holes 3 a, 3 b, and 3 c, and their composite sections are substantially similar (but different in size). The composite section of each through-hole is similar to Figure 1 (b). In the implementation shown, there are two sets of smaller through holes 3 c and one medium through hole 3 b in a large through hole (please read the precautions on the back before filling this page). Bureau employee consumer cooperative prints the recycling of Figure 3, and the medium-sized communication captures the hair 2 shown in Micro 3 contained in the large micro. For at least one of them, there are 5. Of course, it is not removed on the outer wall. The filter element shown by the section is particularly suitable for filtering various fluids. That is, the small through-hole 3 c captures the smaller hole 3 b and captures the medium-sized particles 1 lb and the large-sized particles 1 1 a, as shown in FIG. 4. Therefore, various filter elements are prepared without particles of different sizes. Instead, the filter elements are extended straight and have a plurality of through holes, and others. The overlapping part of the through hole overlaps a short circle of the filter and the opening of the cross-section. The shape of the copy of the through 3 is formed by the shape of the trap. The through hole can be formed by opening and closing the cross section of the filter element. For example, the neck is different from the picture. The filter element along one of the different parts of the filter element is partially weighted on the filter element in Figure 1 (equivalent to a reduced size of 5, which includes multi-directional penetration on the wall, the bottom of the piece is stacked two) b Particles 1 1 c Through-holes 3 a capture need to prepare particles according to the fluid. For forming objects, there are 3 through holes 3, filter elements. If it is displayed on the chart surface, and the circle or ellipse, the filter element 5 and the other paper sizes are applicable to the Chinese National Standard (CNS) A4 specification (210X297 Gong 23- 478952 A7 _____B7 V. Description of the Invention 2 (l) It is equivalent to the enlarged part 4. This composite fracture surface provides approximately the same clearing function as the fluid, as described above. Other through holes may have a generally circular or elliptical fracture surface, as shown. When the fluid flows through FIG. 5 When the filter element is shown, as shown in Fig. 5, the fluid flows in various directions when passing through the filter element 1, as shown by the arrows in Fig. 6 (a). Thus, when using as shown in Fig. 6 (b), The stacked filter elements 1 perform filtration of the recirculated fluid, and when the fluid passes through the filter elements to perform the fluid clarification function, the fluid flow passing through one filter element 1 is introduced into the other multiple filter elements around the one filter element 1. By repeatedly introducing fluid from one filter element to other filter elements, the fluid clearing effect is effectively achieved. Another filter element of the present invention is shown in a perspective view (shown in FIG. 7), which is a shaped object 2 and a vertically-extending short cylinder. Shape and has a The holes 14 extend vertically from the top of the object, and then are bent and branched to form a plurality of branch holes 15 and the openings are formed on the outer wall of the object, as shown. Thus, the implementation shown in FIG. 7 In the example, the through-hole 3 with the composite cross-section of the filter element of the present invention is composed of a main hole 14 and a branch hole 15. As can be seen from FIG. 7, the through-hole 3 has on the top surface of the object the same as FIG. 1 (b ) Similar to the printed section of the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Also, the through hole 3 has a composite section on the outer wall, which is actually curved because the outer wall is curved. When the fluid circulation filter element 1 is supplied When the fluid of the main hole 14 passes through the filter element 1, it is divided into the branch flow in the branch hole 15 as shown by the arrow in Fig. 8 (a). Note that there is no difference between the main hole and the branch hole. When the hole is called the main hole, the other holes automatically become branch holes. In this way, when using the filter elements stacked randomly as shown in Figure 8 (b) to perform the filtration of the recirculated fluid ', and this paper size applies the Chinese National Standard (CNS) A4 Specifications (210X297 mm) · 24-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs When 478952 A 7 ____ _B7____ V. invention described lun) fluid through the filter element to perform the action of the fluid Qing Cheng, filtered through a fluid stream is introduced into the element 1 of a plurality of filter elements surrounding the other filter element. By repeatedly introducing fluid from one filter element to other filter elements, the fluid clearing effect is effectively achieved. Further, even if one open end of one branch hole of the filter element 1 is covered by another filter element 1, the fluid supplied to the main hole 14 can leave the filter element 1 through the open end of the other branch hole 15. Therefore, the stop of the fluid flow is suppressed through the through hole of the filter element 1, and the fluid clearing effect is effectively achieved. Figures 9 and 10 show a filter element 1 according to the invention, which has a plurality of grooves 6 on the outer wall of the shaped article 2. The molded article 2 is a short cylindrical shape and has a through hole 3 with a composite cross section. The through hole itself is basically similar to the filter element shown in Fig. 1 (b), and the through hole 3 has the same fluid-clarifying effect as described above. The outer wall of the filter element 1 is structured along an inner wall, and the inner wall defines a through hole 3. Result The distance (or width) between the inner wall and the outer wall, that is, the wall thickness is uniform along the periphery of the through hole 3. It should be noted that the use of the word ', uniform' does not take into account the presence of grooves.

In the embodiment shown in FIG. 9, a plurality of grooves 6 are formed on the outer wall. The groove 6 can be vertically constructed (or longitudinally along the direction of fluid flow), as shown in Fig. 9 (a), or horizontally (transversely to the direction of fluid flow), as shown in Fig. 9 (b). In another embodiment, the grooves are configured in two directions (i.e., horizontal and vertical). Any suitable shape can be used as the cross section of the groove. For example, the cross section may be V-shaped 6 a, as shown in FIG. 9 (C) ′ or U-shaped (or angled or triangular) 6 b, as shown in FIG. 9 (d). These figures show enlarged sections of the grooves. When using a plurality of filter elements shown in Figure 9 (a) to perform recirculating fluid, the paper size is applicable to Chinese National Standard (CNS) A4 (2U) X297 mm) -25 · (Please read the precautions on the back before filling (This page) • I equipment

1T 478952 A7 B7 V. Description of the invention In the clear effect of ice), another reduced portion 5 is formed between the protruding portions of the groove 6 of the adjacent filter element, as shown in FIG. 1 〇 (a) And 10 (b) (Figure 10 (b) shows an enlarged view of the circle portion X in Figure 10 (a)) and another enlarged portion 4 / formed on the reduced portion 5 / bis thus formed On the side, 俾 shrinks part 5 / connects expands part 4 —. These enlarged portions 4 / and reduced portions 5 / are used as enlarged portions 4 and reduced portions 5 ′ These form a composite section of the through hole 3 in the filter element 1 of the present invention, so it is expected that the filter element 1 In addition, there is the clearing function described in the above-mentioned composite section to further improve the clearing effect of the fluid. The enlarged portion 4 / and the reduced portion 5 > may be constituted by arranging the filter elements in parallel as shown in FIG. 10 (a) or arbitrarily arranged. The filter element of the present invention can be constructed as shown in FIG. 11. FIG. 11 (a) is a side view of the filter element 1, and FIG. 11 (b) is a top view of the filter element 1. As shown in FIG. For example, one of the shaped objects 2 of the filter element 1 includes a through hole 3, which is similar to FIG. 9 (a), except that there is no outer groove, and the end surface 18 defining an opening at one end of the through hole 3 is curved. In the embodiment shown, the top end surface 18 and the bottom end surface 18 of the shaped article 2 are both curved. The top surface 18 is concavely curved on the left and convexly curved on the right. The bottom end surface 18 is convexly curved on the left and concavely curved on the right. As a result, the length of the through-holes shown in the examples is uniform throughout the composite cross section. The filter element 1 shown in FIG. 11 has a concave portion and a convex portion on the two end surfaces. In this way, when several filter elements are arranged (especially in densely spaced stacks), these are randomly stacked (or complexly joined) and oriented in different directions, and the fluid flow through the stacked filter elements flows in various directions, thus the paper Standards are applicable to China National Standard (CNS) A4 specifications (210X297 mm). 26-(Please read the precautions on the back before filling out this page.) · Binding · Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives. 478952 A7 _B7_ V. Description of the invention Hung) Effectively achieve the clearing effect of the fluid. Figs. 12 and 13 show other embodiments of the shaped object 2. As the filter element 1 of the present invention, this has a gap portion 7 connecting the outer portion of the filter element 1 and the through hole 3. In the filter element 1 shown in FIG. 12 (a), the shaped object 2 includes a through hole 3, and its composite cross section is a substantially fan shape with an acute angle. In this embodiment, a portion 5 near the center of the sector corresponds to a reduced portion, and the remaining portion 4 (mainly a portion on the arc side) corresponds to an enlarged portion. The outer wall of the shaped object 2 is constructed along the inner wall, and the inner wall defines the through hole 3, so the wall thickness of the object 2 is uniform along the periphery of the object. The object 2 has a slit portion 7 in an arc shape, and the slit portion 7 connects the inner wall of the through hole 3 and the outer wall of the filter element 1, so that the fluid communication between the through hole 3 and the outside of the filter element 1 is ensured. Moreover, the filter element shown in FIG. 12 (b) is substantially the same as that of FIG. 1 (a), except that it has a gap portion 7 on the outer wall of the substantially cylindrical portion 40. When the filter element 1 with the gap portion 7 is used in the Chenghao fluid (or water), the bacteria 12 around the reduced portion 5 increase, as shown in FIG. 2, so the biological purification effect is achieved. Moreover, the fluid flow occurs through the gap portion 7 and flows out of the enlarged portion 4 of the through hole 3, as shown by the arrow in FIG. 13, so the particles are also detained near the gap portion 7, which accelerates the object of the filter element of the present invention. Buried. And improve fluid clarity. In the embodiment of the filter element 1 shown in Figs. 14 (a) and 14 (b), a plurality of grooves 8 are formed on the inner wall, and this defines the through hole 3 having the above-mentioned clearing effect. The groove 8 can be structured vertically (or the side through which the fluid passes longitudinally ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) · 27-(Please read the precautions on the back before filling this page) · Installation Ordering printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and the Consumer Cooperatives printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumer Cooperatives of the Ministry of Economic Affairs printed 478952 A7 __B7 V. Description of the invention 2 $) Direction), as shown in Figure 14 (a), or horizontal structure ( Transverse to the direction of fluid flow) 'as shown in Figure 14 (b). In another embodiment, the groove is configured in two directions (ie, horizontal and vertical). Any appropriate shape can be used as the cross section of the groove. For example, the cross section may be V-shaped 8 a, as shown in FIG. 14 (c), or ϋ-shaped (or angular or triangular) 8b, as shown in FIG. 14 (d). These figures show enlarged sections of the grooves. When the filter element 1 is used to perform the fluid cleaning effect, the surface area of the filter element is increased, and some fluid may remain in the groove 8, and bacteria accumulating around the groove 8 are accelerated to increase. This leads to an increase in the biological purification effect, resulting in an effective fluid-clarifying effect. In Figs. 15 to 18, a single through hole 3 of the filter element 1 of the present invention has a plurality of lengths along the fluid passage, which differs depending on the position of the passage in a single composite section. That is, the lengths of the through holes 3 are different. The filter element 1 shown in Fig. 15 is similar to that shown in Fig. 1 (b), except that the top surface is stepped. Therefore, the top surface of the shaped object 2 has a stepped portion 16, so the length of the through hole 3 of the stepped portion 16 is shorter than the length of the compound through hole of the other portion. That is, the length of the through hole 3 from the lower surface to the top surface in the stepped portion 16 is shorter than that of the other portions. This is called "the length of the through hole is different in the filter element". The stepped portion can be made by cutting out a part of the filter element shown in FIG. 1 (b), which is defined by a vertical plane 101 and a horizontal plane 102. Fig. 16 (Fig. 16 (a) is a side view of the filter element 1, and Fig. 16 (b) is a top view of the filter element 1) The filter element 1 shown in Fig. 1 contains the same through hole as in Fig. 1 (b) The composite cross section, and reached the figure 1 (b) This paper size is applicable to the Chinese National Standard (CNS) A4 specifications (210X297 mm) -28-(Please read the precautions on the back before filling this page)

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7 V. Description of the invention 2 $) The same fluid clarity effect. In the embodiment shown, the top surface and the bottom surface of the filter element 1 are made into bent surfaces 17 and 17 > as shown separately. That is, the 'top surface 17 is inclined toward the reduced portion 5 in the left direction and inclined downward from the reduced portion 5 in the right direction. On the other hand, the bottom surface 1 7 is inclined downward toward the reduced portion 5 on the left and inclined upward from the reduced portion 5 on the right. As a result, the length of the composite through-hole is the longest in the reduced portion 5, and decreases as it approaches the periphery of the filter element 1. Moreover, in this embodiment, the length portions of the through holes 3 are different. The filter element shown in FIG. 17 is substantially the same as that shown in FIG. 16, except that the top and bottom surfaces 19 and 19 / are convexly curved instead of the knife shape as shown in FIG. 16. Note that Figure 17 (a) is a side view, and Figure 17 (b) is a top view. The length of the through hole 3 (this part is different, depending on the position of the channel, as above ^), the end surface (ie the top The surface and bottom surface) can be various complex surfaces, that is, the end surface has concave and / or convex portions. When the filter elements 1 shown in Figs. 15 to 17 are stacked, these are arbitrarily joined to each other, as shown in Fig. 18. Due to the complicated surface, the filter elements 1 face in various directions. These filter elements 1 are placed in the recirculated fluid flow, and the fluid flows through the filter element 1 in various directions, so that the fluid cleaning effect is enhanced. In the embodiment shown in Figs. 15 to 18, the length of the through hole 3 having a composite cross section is different from that of a through hole. In the embodiment shown in FIG. 19, the filter element has a plurality of through holes 3 (25, 26, and 27), each having a composite cross section, and each of the through holes 3 has a uniform length in its composite cross section. , And the lengths of these composite through holes are different from each other. Figure 19 (a) is the filter element 1 The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -29-" (Please read the precautions on the back before filling this page)

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 ____B7 V. Description of the invention)) A perspective view of Part 1 and Figure 19 (b) is a longitudinal sectional view of the filter element 1. The shaped object 2 as the filter element 1 may be formed by adhering three object units 2 8, 29 ′ 30. Each unit has a through hole 3 and a composite cross section (including an enlarged portion 4 and a reduced portion 5), which is the same as that in FIG. 1 (b), so as to achieve the above-mentioned fluid clearing effect. The outer surface is generally structured along each inner surface, which defines each through hole 3, so the wall thickness is approximately uniform. In the illustrated embodiment, the through-holes 3 of each of the units 28, 29, and 30 have a length that is different from the length of the through-holes of other units, and therefore, the object units themselves have different lengths. The filter element 1 includes a longer unit 2 8 with a longer-length through hole 25, a medium unit 2 9 with a medium-length through-hole 26, and a shorter unit 30 with a shorter-length through-hole 27. See Figure 19 (b). In the embodiment shown, the outer wall of the longer unit 28 is connected to the outer wall of the medium unit 29, which is connected to the outer wall of the shorter unit 30, while the bottom ends of all units are in the same plane (i.e., these Level with each other), and the tops are in different positions to form a step shape as shown in Figure 19 (b). When the filter elements 1 shown in FIG. 19 are stacked, these are arranged randomly, presenting a hierarchy of filter elements, so the filter elements are oriented in various directions, as shown in FIG. 20. In this way, when the fluid clearing effect is performed by using these filter elements, and the fluid passes through the filter elements thus stacked, the fluid effectively flows through the through holes and the filter element in different directions, so the clearing effect is improved. The filter element of the present invention is made of cut-shaped shaped articles (i.e., one shaped article having a hollow portion) as divided pieces each having two cutting surfaces on two ends. The hollow part has a cross section equivalent to that of the filter element of the present invention. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 30-(Please read the precautions on the back before filling this page)

478952 A7 B7____ 5. Description of the invention 邙) Compound cross section of hole. Specific examples are shown in Figure 2 1 to 2 3 ° (Please read the precautions on the back before filling this page) Although in the embodiment shown in Figure 19, the length of all through holes of the filter element changes stepwise, such as It is shown in Fig. 19 (b) 'but this length can be changed continuously (and smoothly). That is, the length of each through-hole is different (ie, continuously changed), and 'the length of one through-hole is different from the length of another through-hole'. Therefore, the longitudinal section of the filter element is shown in FIG. 2 (b), for example. In Object 2, filter element 1 shown in Figure 2 1 (b) (this shows the section along line A — A in Figure 2 1 (a)) 'Each object unit is 28, 29, and 30 The length of the hole 3 is partially different, and it is also different from the length of other units. Therefore, the entire unit of the object is constructed with different lengths. Longer through-holes 25 are constructed in longer object units 28, medium-length through-holes 26 are constructed in medium-object units 29, and shorter-length through-holes 27 are constructed in shorter object units 3 in 0. The filter element shown in FIG. 21 is substantially the same as that shown in FIG. 19 except that it is not a stepped top surface but a continuous top surface. Printed by the Employee Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In the illustrated embodiment, the outer wall of the longer unit 2 8 is connected to the outer wall of the medium unit 29 and this is connected to the outer wall of the shorter unit 30. The top end and the bottom end of each unit are on the same plane (that is, flush with each other), as can be seen from Figure 21 (b). The top end is on a plane inclined to the direction of the fluid channel, and the bottom end is on a plane perpendicular to the direction of the fluid channel. In this way, the length of the through hole changes continuously and linearly, across a through hole 3 and across the through holes 25, 26, and 27. The filter element shown in Figure 21 is made of a cut-shaped tube-shaped shaped object with a cross section ('as shown in Figure 2 2 (d)) which is equivalent to the size of the filter element 1. The paper size applies to Chinese national standards ( CNS) A4 specification (210X297 mm) -31-" 478952 A7 B7 V. Description of the invention etc.) The composite cross section of the hole to form a piece with two cut faces at each end. That is to say, cut through the tubular object 2 which has an outer wall and a hollow part 2 1 (its cross section is equivalent to the filter element (please read the precautions on the back before filling this page) pieces of through holes) 〇 ， 俾The hollow part is exposed at the two cut planes of the sub-piece 'to obtain the filter element 1. The cut plane forms the top plane 4 2 a and the bottom plane 42 b, as shown in FIG. 22. When cutting the tubular object 20, at least one of the cut surfaces should be made into a flat surface 'which is inclined in the direction of the long hollow portion 21 (that is, the direction of the through hole or the fluid channel). In FIG. 21, the direction of the top surface 42a of the filter element 1 to the through hole 3 is inclined, and the direction of the bottom surface 4 2b of the filter element 1 to the through hole 3 is perpendicular. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints the cut-off of the tubular object at a predetermined predetermined angle (that is, the angle of all faces inclined to the fluid channel). 20 is a component with a predetermined predetermined size, which effectively produces the same Filter elements 1 'of the same size and the same composite cross-section result in a good productivity of the filter. Moreover, in the case where at least one of the cut planes is inclined to the direction of the through hole of the filter element, when the filter elements shown in FIG. 21 are stacked, these are arranged randomly with the inclined surface of the filter element, with each filter element facing various directions . In this way, when the filter element is used to perform the fluid clearing effect 'and the fluid passes through the stacked filter elements, the fluid flows in various directions effectively through the through holes and the filter element, so the clearing effect is improved. By cutting a tube having a hollow portion 21, 1 piece is formed through a cylindrical body (as shown in Fig. 2 2 (d)), and various filter elements 1 'are produced. The perspective view is shown in Fig. 2 2 (a) To 2 2 (c). The hollow portion 21 has a composite cross section corresponding to the through hole 3 of the filter element 1 of the present invention. Figure 22 (a), 22 (b), or 22 (c) Filter element 1 The size of this paper is applicable to China National Standard (CNS) A4 specification (210X297 mm) -32-478952 A7 B7 V. Description of invention 3 (0) A hole 3 includes a pair of enlarged portions 4 and a reduced portion 5 connecting the enlarged portions 4. The shape of the composite cross section of the through hole 3 is substantially the same as that of FIG. 1 (b). Tube shape (please read the precautions on the back before filling this page) The hollow section 2 1 of the object 2 has an enlarged section 2 2 and a reduced section 2 3, which are equivalent to the compound section. Enlarge part 4 and reduce part 5. By cutting the tube-shaped object 20 along various cutting planes 24 to form a cutting plane 4 2 at various angles to the direction of the through-hole 3, various filter elements 1 'are produced which have the same composite cross-section and different passages. The length of the hole, and its top surface and bottom surface can be inclined at various angles. In the filter element 1 shown in FIG. 2 (a), the top surface is inclined to the direction of the through hole 3, and the bottom surface 4 2b is perpendicular to the direction of the through hole 3. In the filter element 1 shown in FIG. 22 (b), both the top surface 42a and the bottom surface 4 2 b are inclined to the direction of the through hole 3, so the two surfaces are parallel. In the filter element 1 shown in FIG. 22 (c), since the top surface 42a and the bottom surface 4 2 b are inclined to the direction of the through hole 3, the two surfaces are not parallel. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs When the filter elements shown in Figure 22 are stacked, these are arranged randomly on the inclined surface of the filter elements, as shown in Figure 23, so the filter elements are oriented in various directions. In this way, when the fluid clearing effect is performed by using these filter elements, and the fluid passes through the stacked filter elements, the fluid flows in various directions and effectively passes through the through-holes and on the filter element, thus improving the fluid clearing effect. In the filter element of the present invention, the area of the composite cross-section (this is referred to as the cross-sectional area of the through-hole) can be changed in the direction of the fluid channel (ie, the direction of the through-hole), which is shown in Fig. 24. The cross-sectional area of the through hole of the filter element 1 shown in Fig. 24 decreases from the top surface to the bottom surface of the right part of the filter element 1. Note that the embodiment shown can be constituted by applying the Chinese National Standard (CNS) A4 specification (210X297 mm) -33-478952 A7 B7 to this paper size. 5. Description of the invention P) Parallel connection of the two filter elements shown in Figure 1 (b) 'At the same time, the cross-sectional area of the through hole 3 of the right element changes along the direction of the flow channel. In the illustrated embodiment, the cross-sectional area of one of the through holes 3 of the 'right element' decreases toward the bottom surface of the filter element 1, and this hole 3 is called a holding hole 31. The holding hole 31 has a smaller cross-sectional area at the bottom end than the through hole at the top end. Therefore, the fluid passing through the through hole 3 (that is, the holding hole 3 1) is at least temporarily held in the through hole 3 (3 1) Within. The change rate of the cross-sectional area of the holding hole should be reduced toward the bottom surface of the filter element. For example, the vertical section of the through hole 3 (or the holding hole 3 1) can present a parabolic curve, as shown in FIG. 24 (b), this display is along the line A—A in FIG. 24 (a). . Or, the parabolic curve may be step-shaped, with several orders 4 3, as shown in FIG. 24 (c), this display is a cross-sectional view taken along line A-A in FIG. 24 (a), this Increasing the surface area of the through hole 3 is beneficial to accelerate the increase of bacteria. When using the filter element shown in FIG. 24 to perform fluid filtration, the recirculated fluid supplied from its top end to the holding hole 3 1 is temporarily held at the lower part of the holding hole 3 1 (its cross-sectional area is gradually narrowed). As the fluid passage is blocked, as shown by the thick and thin arrows in Figure 25, the particles 11 may remain in the holding hole 31 and settle on the inner wall of the hole. The area where the particles are left is generally indicated by the numbers in Figure 25, 39, and the increase in bacteria in area 39 is accelerated, which results in a more effective biological purification effect. Another embodiment of the filter element of the present invention is shown in FIG. 26, which is similar to the embodiment shown in FIG. 24 (c), but the inner wall defining the retaining hole 31 is different. The inner wall of the embodiment shown in FIG. 6 has at least one, preferably a plurality of recesses. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm). 34-(Please read the precautions on the back before filling This page) • Fitting · —. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 478952 A7 B7 V. Inventive T-shirt) (Please read the precautions on the back before filling this page) (or notch) Section 3 8, This holds the fluid therein to replace some of the steps of the embodiment shown in Fig. 24 (c). The concave portion extends along the periphery to surround the through hole 3. The longitudinal section of the concave portion 38 can be shown in Figs. 26 (b) to 26 (d). The concave portion 38 shown in Fig. 26 (b) is a groove having a U-shaped cross section, and the slope extends downward. The groove surrounds the through hole 3 1 horizontally, and this is contained in a plane perpendicular to the direction of the through hole 31. In the embodiment shown in Fig. 26 (b), two grooves 38 are formed in the middle of the inner wall shown in Fig. 24 (c) (as a result, the step 43 and the groove 3 8a are combined). As shown in Fig. 26, a part of the fluid supplied to the through hole 3 of the filter element 1 easily enters the recessed portion 3 8a. Once the fluid enters the part 38a, it cannot advance or exit the part 38a, because the inner surface of the concave part stops the fluid flow, so the fluid remains in the part 3.8a. In the embodiment shown in FIG. 26 (c), the inner wall defining the through hole 3 has a concave portion 38b of thousands (two or more), instead of the concave portion having a U-shaped cross section in FIG. 26 (b). Part 3 8 a, and each recessed part is printed with a V-shaped cross section by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, and there is no step shape. The function of the recessed part of Fig. 26 (c) is roughly the same as that of Fig. 26 (b). In the embodiment shown in FIG. 26 (d), the inner wall defining the through hole 3 has a plurality of concave portions 38c, instead of the two concave portions 3 8a of the U-shaped cross section of FIG. 26 (b), And each concave portion has a c-shaped cross section, which protrudes in this direction, and there is no step shape. It should be noted that the opening of the concave part 3 8 c is smaller than that of the concave section, so once the fluid enters the concave part, the paper size applies to the Chinese National Standard (CNS) A4 specification (210X297 mm)- 35-478952 A7 B7 V. Inventive shirt) It is difficult to leave the recessed part 3 8 c. -(Please read the precautions on the back before filling in this page) Although the oversprinkling of Cheng Cheng fluid has been performed using the 兀 2 and 6 elements, it has entered the recessed parts 38a, 38b, or 38c. The circulating fluid is held in this part, so another fluid holding part 39 is formed in part 38a, 38b, or 38c, as shown in FIG. 27. As a result, bacteria 12 in part 39 accelerates, which results in accelerated biological purification. Further, as described with reference to FIG. 25, the recirculated fluid supplied from the top end to the holding hole 31 is temporarily held in the lower portion of the holding hole 31, and its cross-sectional area is made smaller because the fluid passage is partially Blocking, as shown by the large and small arrows in Figure 27, so the particles may remain in the hole 31 and settle on the inner wall of the hole 31. The area where the particles are held is generally indicated by the number '' 3 9 〃 in Figure 27. The bacteria in area 39 accelerates to increase, which leads to an improved biological purification effect. Printed in other embodiments by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the filter element of the present invention is coated with a thin film, which can chemically decompose the particles contained in the fluid and / or the substances dissolved in the fluid, especially organic substances, Such as protein, fat, etc. perform chemical purification. Specifically, the thin film may be a photodestructive agent, such as titanium oxide, especially titanium dioxide, and at least a part of the exposed surface of the filter element is coated with the thin film. For example, when the filter element has this coating, and the filter element is used to perform fluid filtering, while the filter element is illuminated by light, such as a sun beam or light from a fluorescent lamp, the film decomposes the fluid due to its catalytic function. The organic materials and / or particulates are water and carbon dioxide. In this way, the chemical purification action additionally enhances the fluid cleaning effect. In other embodiments, the filter element of the present invention is coated with paper that can accelerate the growth of bacteria. The paper size is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -36-478952. Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. A7 _B7 5. Description of the invention and) Plus film. Specifically, the film may be made of a material which can neutralize a material harmful to the increase of bacteria. For example, the harmful material contains compounds related to chlorine, such as chloride ions, and the film may be made of sodium thiosulfate (N a 2 S 2 03). When the filter element has this coating, and the filtration of the fluid is performed, the membrane is dissolved in the fluid and neutralizes harmful materials in the fluid, and the bacteria are accelerated to increase, thereby further improving the biological purification effect. In one embodiment, the filter element of the present invention is a shaped object made of vinyl chloride resin (polyvinyl chloride), which has good weather resistance and chemical resistance. In addition, the shaped object of the filter element made of vinyl chloride resin is not easily deformed or dissolved in the fluid, so the object can be used for a long time. Moreover, vinyl chloride resin is cheaper than other materials, which reduces the production cost of filter elements. The filter element of vinyl chloride resin can be manufactured by an appropriate method, and is preferably an injection molding method or an extrusion method. Those skilled in the art will readily understand that the above-mentioned embodiments of the filter element of the present invention can be combined in any way, and that these combinations lead to the effect of such combined embodiments. 0 This invention is based on Japanese Patent Application 1 1-1 9 0 6 1 3 No. (filed on June 5, 1999) and the contents of this application are incorporated by reference. (Please read the precautions on the back before filling out this page) • Loading, ordering .4 This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) -37-

Claims (1)

478952 A8 B8 C8 D8 VI. Patent application scope 1 · A filter element including at least one through hole for the fluid to be filtered containing particles to pass through the 'through hole has a composite section perpendicular to the direction of the fluid channel, this section includes an enlargement A portion is used to ensure fluid flow through 'and a reduced portion is used to capture particles in the fluid. 2 · The filter element according to item 1 of the scope of patent application, wherein this contains a plurality of through holes, each having a composite cross section, which generally has a similar relationship with the composite cross sections of other through holes. 3 · The filter element according to item 1 in the scope of patent application, which includes multiple through holes, and the direction of each through hole is different from the direction of other through holes. 4 · As described in item 1 of the scope of patent application The filter element, wherein the through hole is branched into a plurality of channels. 5. The filter element according to item 1 of the scope of patent application, wherein the filter element has a plurality of grooves on an outer wall, and the outer wall defines the filter element. 6. The filter element according to item 1 of the scope of the patent application, wherein this includes at least one gap portion, and the communication defines an inner wall of the through hole and an outer wall of the filter element. 7. The filter element according to item 1 of the scope of patent application, wherein the inner wall defining the through hole has a plurality of grooves. 8 · The filter element according to item 1 of the scope of patent application, wherein the through hole has multiple lengths along the fluid channel, and the lengths are different. 9 · The filter element according to item 1 of the scope of patent application, wherein there are multiple through holes, each of which has a uniform length, and the length of each through hole is different from the length of other through holes, Different lengths. Applicable to China National Standards (CNS) A4 specifications (210X297 mm) -38-(Please read the precautions on the back before filling out this page): Packing, 1T 478952 A8 B8 C8 D8 VI. Patent Application Scope 1 〇. The filter element described in item i of the scope of patent application, wherein the section of the tube having a hollow portion generated by cutting a tube is equivalent to a composite section, and the two surfaces generated by cutting Make an angle to the axis of the tube. 1 1. The filter element according to item 1 of the scope of patent application, wherein an area of one of the composite cross-sections of the through hole changes in the direction of the fluid passage. 1 2. The filter element according to item 1 of the scope of patent application, wherein the through hole includes a device 'for holding a fluid on an inner wall constituting the through hole. i 3. The filter element according to item i in the scope of the patent application, wherein the exposed surface of the filter element is coated with a thin film, which chemically reacts with the material contained in the fluid to clarify the fluid. 14. The filter element according to item 1 of the scope of the patent application, wherein the exposed surface of the filter element is coated with a film, which accelerates the increase of bacteria. 1 5 · The filter element according to item 1 of the scope of patent application, wherein this is produced by manufacturing a polyvinyl chloride resin. (Please read the precautions on the back before filling out this page) Packing-， 1T Ministry of Economic Affairs Smart Money / 4 ^ 7¾Cooperation between Industry and Consumers 钍 The paper is printed in accordance with China National Standard (CNS) A4 (210X297mm) · 39 -