Stacked cone type cyclone separator and vacuum cleaner with same

Abstract

The vacuum cleaner and fluid separator include a vortex generating device that generates a forced vortex based on the Coanda effect principle. And the generated vortex is laminar vortex flow, so that fluid particles are clearly separated into layers. The fluid with larger particles or higher density vortexes at the outer layer, and the fluid with smaller particles or lower density vortexes at the inner layer, so that the fluid is easy to separate. The separator also includes stacked cones with a narrow space between the stacked cones to serve as a surface settling area to facilitate separation. As a large number of cones can be stacked in a limited area, a large number of surface settling areas are formed. The fluid separator also includes a reverse vortex promoting cone to separate the larger or denser fluid to be contained into the larger particulate fluid storage chamber and draw a portion of the fluid swirled at the inner layer through the connecting channel back to the separation system. Extracting a portion of the fluid from the fluid collection channel for larger or higher density of particles causes the fluid to swirl down through each interstitial space between the stacked cones to the fluid collection channel for larger or higher density of particles, thereby achieving efficient separation over a surface settling area, which is a shroud surface of the stacked cones. The vacuum cleaner further comprises a preliminary separation section that separates large or fibrous impurities prior to the separation process of the smaller particulate fluid, so that the vacuum cleaner is less susceptible to clogging, and the separation process is very efficient, capable of separating contaminants to enable clean air to be expelled from the vacuum cleaner, and also capable of removing the contaminants from the vacuum cleaner. And an additional filter layer is not needed. Therefore, the suction force of the dust collector cannot be reduced due to blockage of the filter layer.

Description

Technical Field

[0001] The invention relates to a stacked cone type cyclone separator and a vacuum cleaner having the stacked cone type cyclone separator. Background Art

[0002] Cyclone separator is a long-term commonly used fluid separator, and provides good results when the inhomogeneous fluid to be separated is composed of multiple phases and the size or density of the particles of each phase is very different (such as water and oil). However, when the size or density of the particles used to separate the phases is only slightly different (such as fine dust in the air), its efficiency is low. This is mainly because the traditional cyclone separator generates a vortex flow when the fluid is introduced through a tangential inlet. Therefore, the vortex flow generated is a free vortex, and its vortex speed becomes higher as the vortex approaches the center of the vortex. Under the action of this centrifugal force (centrifugal force directly changes with the speed of the vortex), particles with smaller size or lower density will be arranged into vortices along the outer layer of the vortex under the action of a smaller centrifugal force, while larger or higher density particles will be arranged into vortices along the inner layer of the vortex under the action of a larger centrifugal force. The fluid will be separated again at the vortex reversal point of the cyclone cone. The reverse vortex is a forced vortex type vortex, that is, the outer vortex speed is higher than the inner vortex speed. Due to the fact that the centrifugal force changes directly with the speed of the vortex. At the vortex reversal point, the fluid centrifuged to the outer layer contains both large particles centrifuged by the reverse vortex (the reverse vortex is a forced vortex) and fluid with smaller particles, which are subjected to the smaller centrifugal force from the free vortex previously swirled in the outer layer. Therefore, it becomes difficult to separate only the fluid containing larger or higher density particles. For this reason, the fluid with smaller particles that was previously swirled in the outer layer is also separated. If the separation opening end of the cone bottom is too small, a part of the fluid with larger particles or higher density will not be completely separated through the cone bottom outlet. Then it will be discharged in the reverse direction through the outlet for the fluid with smaller particles or lower density. If the cone bottom outlet is too wide, the fluid flowing down to the storage chamber for the fluid with larger particles or higher density will exceed the capacity of the storage chamber for the fluid with larger particles or higher density, and a strongly reversed vortex will be formed from the storage chamber, thereby carrying the fluid with larger particles or higher density in the reverse flow through the fluid outlet for the fluid with smaller particles or lower density. Alternatively, when it is discharged from the separator through the outlet below the cone, the proportion of the discarded fluid relative to the total fluid volume will become too much. That is, the discarded portion includes a portion of the fluid having smaller particles or lower density.

[0003] Conventional cyclone separators are used in industrial dust filtration, and they have the above-mentioned disadvantages of conventional cyclone separators, resulting in some fine dust residues that cannot be completely filtered. Therefore, filter bags or filter layers must be used as the final filtration before the inhaled air is released into the external atmosphere.

[0004] In recent years, the use of cyclone separators in vacuum cleaners has become very popular, due to the fact that cyclone type vacuum cleaners are not as prone to clogging as conventional vacuum cleaners using bags. When the bag is clogged, air cannot circulate. The suction is thus reduced and the efficiency of the vacuum cleaner decreases accordingly. Moreover, cleaning the filter bag that is covered with dust is harmful to health. Due to the above-mentioned shortcomings of conventional cyclone separators in separating fine dust, in order to achieve an acceptable cleanliness standard before the dust is discharged into the atmosphere, multiple cyclone separators are required. As a result, the vacuum cleaner becomes bulky. The problem that cannot be solved is that conventional cyclone separators cannot filter out the dust carried in the inhaled air to achieve an acceptable cleanliness standard before releasing it to the outside atmosphere. A filter layer is required for final filtration before discharge to the outside atmosphere. Such a requirement leads to the problem of filter clogging in the former. An example of such a vacuum cleaner can be found in US Patent No. 8979960B2. Recently popular small handheld vacuum cleaners have gradually abandoned cyclone separators and replaced them with various filters. Nonetheless, it suffers from the same previous problems in that the filter becomes clogged easily, causing the efficiency of the vacuum cleaner to decrease, and the filter needs to be cleaned frequently. An example of such a vacuum cleaner is disclosed in U.S. Patent No. 2021 / 0290019A1. Summary of the invention

[0005] The cyclone separator according to the present invention uses a vortex generating device based on the Coanda Effect principle. The vortex generated is a forced vortex with a laminar swirling flow, i.e., the vortex velocity is the largest at the outermost periphery of the vortex. As the vortex approaches the center of the vortex, the velocity gradually decreases, which corresponds to the distribution of fluid particles under the action of centrifugal force. In other words, fluids with larger particle sizes or higher densities are subjected to the action of larger centrifugal forces, thereby vortexing at the outer layer of the vortex. On the contrary, fluids with smaller particles or lower densities are subjected to the action of smaller centrifugal forces, and then vortexing at the inner layer of the vortex. Using the vortex generated based on the Coanda Effect, the vortex will attach to the convex surface vortex next to the orifice and flow in a laminar form, so that the fluid particles are separated into and distributed in the vortex layer according to the particle size or density that is easy to separate. The separation will be carried out from the outer layer to the inner layer until the desired fluid with a specific particle size or density is obtained.

[0006] The cyclone separator according to the present invention also includes stacked cones to increase the surface sedimentation area, thereby increasing the sedimentation rate or separation rate. The stacked truncated cones have upstream and downstream open ends, wherein each cone is installed separately to form a narrow gap space between the cones. The stacked cones are installed after the vortex generating chamber, which can stack a large number of cones in a limited area. This arrangement provides a large amount of space between the cones, so the inner cover area of ​​a large number of stacked cones is large. These areas are surface sedimentation areas to promote separation, which significantly improves the separation capacity compared to currently existing cyclone separators (which have a single cyclone cone or a small number of cones due to the need for a larger placement area).

[0007] The cyclone separator according to the present invention also includes a design of a fluid circulation system for recirculating the remaining fluid after separation, wherein the fluid with larger particles or higher density (heavier phase) is partially separated by the vortex at the cone cover area of ​​the space between the adjacent cones and the vortex of the wall of the collection channel for the fluid with larger particles or higher density adjacent to the cone. In order to recirculate the remaining fluid back to the separation chamber for re-separation to obtain a cleaner result, a vacuum motor fan is placed between the fluid inlet and the vortex generating device, and a connection is arranged between the end of the fluid collection channel for larger or higher density particles and the fluid inlet of the separator by arranging a connecting channel at the downstream end of the cone to assist the reverse vortex flow to connect to the fluid inlet of the separator. The fluid is recirculated back to the separation process by the fluid circulation system to form a fluid suction in the fluid collection channel for the fluid with larger particles. Therefore, the fluid is sucked through each space between the cones in the form of a vortex, and flows evenly and thoroughly to the fluid collection channel for larger particles to promote efficient separation on the surface settling area of ​​the cover surface of the stacked cones.

[0008] In summary, the stacked cone cyclone separator according to the present invention includes a fluid inlet, a vacuum motor fan for suction and blowing, a vortex generating device, a vortex generating chamber, a separation chamber including gap spaces between cones in the stacked cones, and the separation chamber is formed by the downstream opening end of the stacked cones. A fluid collection channel for larger or higher density particles (heavier phase) located near the upstream opening end of the stacked cones, a cone for promoting reverse vortex flow to separate fluid with larger particles or higher density (heavier phase) from fluid with smaller particles or lower density (lighter phase), wherein the fluid with smaller particles or lower density is brought back to the separation system through a connecting channel connected to the fluid inlet located before the vacuum motor fan, a storage chamber for larger or higher density particles (heavier phase), and an outlet provided for the light phase fluid.

[0009] The operation of the stacked cone cyclone separator according to the present invention starts with introducing the fluid from the fluid inlet into the separator through a vacuum motor fan located between the fluid inlet and the vortex generating device, generating a partial vacuum to suck the fluid into the separator and blow the fluid to the fluid distribution chamber, distributing the fluid to the orifice of the vortex generating device, the vortex generating device generates a vortex flow based on the Coanda effect principle, and the vortex generating device is a conical or cylindrical transmission base with an internal cavity configuration. An orifice is installed around the transmission base. A convex surface bent toward the inner wall of the internal cavity is arranged next to the orifice, and the internal cavity is used as a vortex generating chamber. The convex surface next to the orifice is set to be the closest surface compared to other surfaces around the exit axis of the orifice. The fluid driven by the orifice will be deflected and flow along the convex surface next to the orifice, and induce the fluid in the vortex generating chamber to flow into and flow along the convex surface, because the pressure of the convex surface is lower than that of other parts of the vortex generating chamber filled with fluid. A plurality of orifices and convex surfaces of the orifice side pieces are symmetrically arranged around the transmission base of the vortex generating device. Therefore, the fluid flow of each convex surface inside the vortex generating chamber relays each other to form a vortex flow inside the vortex generating chamber. Since the fluid pressure is the largest at the outlet of the orifice and the convex surface that bends toward the inner wall of the vortex generating chamber, the vortex velocity is the largest at the vortex layer of the wall adjacent to the vortex generating chamber, and the vortex velocity gradually decreases when it approaches the central vortex of the vortex, thereby reducing the corresponding thrust. Since the centrifugal force changes directly with the vortex velocity, the centrifugal force becomes the largest at the outermost layer of the vortex. Fluids with larger particles or higher density (heavier phase) are subject to a larger centrifugal force and vortex at the outer layer of the vortex. Fluids with smaller particles or lower density (lighter phase) are subject to a smaller centrifugal force and vortex at the inner layer of the vortex. After the fluid vortexes for a while in the vortex generating chamber, the fluid particles will be obviously dispersed into layers. When the fluid swirls to the separation chamber, the separation chamber is an internal cavity formed by the downstream open ends of the stacked cones. When the fluid swirls to the first gap space between the first stacked cones and the second stacked cones (where the downstream open end of the first cone is surrounded by the open end of the vortex generating chamber), due to the sudden lengthening of the circumference of the vortex to correspond to the circumference of the second stacked cones, the fluid with larger particles or higher density (heavier phase) swirling at the outer layer is thrown out to swirl around the inner cover of the stacked cones, and then swirls around the cover of the stacked cones, and then swirls downward to the fluid collection channel for larger or higher density particles (heavier phase). Subsequently, the fluid adheres to the cover of the fluid collection channel for larger or higher density particles (heavier phase) and swirls downward to the bottom of the fluid collection channel for larger or higher density particles.During the hood vortex of the inner hood attached to the cone and the fluid collection channel for larger particles (which is the surface settling area), the fluid with larger particles or higher density will settle when it contacts the surface, so when the fluid with larger particles or higher density vortex flows to the bottom of the collection channel for larger or higher density particles, the fluid is separated. The cone is installed to promote reverse vortex, and an annular space is provided between the hood edge of the fluid collection channel for larger or higher density particles and the cone for promoting reverse vortex. The total cross-sectional area of ​​the annular space must be less than the minimum space that can allow the fluid to flow completely through, so that the remaining part of the light phase fluid vortexing at the inner layer of the vortex can reversely vortex upward along the cone surface of the reverse vortex promoting cone. At the vortex reversal point, the fluid with larger particles is separated out to the space and collected in the storage chamber for the fluid with larger particles or higher density. The rest of the fluid with smaller particles vortexing at the inner layer of the vortex will reversely vortex upward into the connecting channel to carry the fluid back to the fluid inlet before the vacuum motor fan to be sucked into the fluid distribution chamber and then enter the vortex generating device. This will allow the partially sorted fluid to be circulated back into the separation process. The fluid is then sorted multiple times by recirculation until the desired clean fluid is obtained. The cyclic suction is conducive to sucking fluid from the fluid collection channel for larger particles, so that the fluid in the induced separation chamber is thoroughly vortexed downward to each gap space between the stacked cones. This enables the separator according to the present invention to achieve efficient fluid separation.

[0010] The rest of the fluid that previously swirled at the inner layer, after swirling downward to the first inter-cone space, will swirl outward as the outer vortex, attached to the inner cone cover vortex, swirl toward the downstream portion of the cone cover, that is, swirl upward to the end of the second stacked cone. Through the space between the second stacked cones and the third stacked cones, the fluid swirling at the outer layer (which is a fluid with larger particles) is attached to the vortex on the inner cover of the third cone by centrifugal action, and then swirls downward along the second gap space between the cones (the fluid attached to the inner cover vortex of each cone promotes sedimentation), and settles downward to the fluid collection channel for larger or higher density particles. The separation process is repeated again at the vortex reversal point promoted by the reverse vortex promoting cone. The fluid with larger particles or higher density swirling at the outer layer is separated through the annular space between the channel cover for the fluid collection channel for larger or higher density particles and the reverse vortex promoting cone, and goes down to the storage chamber for larger particles. The remaining part of the fluid swirling at the inner layer will reversely swirl upward along the reverse vortex promoting cone to the connecting channel and return to the vortex generating system to perform the above-mentioned separation process.

[0011] The rest of the fluid swirling at the inner layer of the vortex remaining from the downward vortex to the second space between the cones will swirl outward to become the outer layer of the vortex. Then it swirls continuously to the next gap space between the cones. The above-mentioned separation process will occur repeatedly corresponding to the number of gap spaces between the stacked cones. Due to the fact that this cone stacking allows a large number of cones to be stacked in a limited area, there is a large amount of space between the cones so that the separation can occur a large number of times at the space between the cones and the large amount of cover area of ​​the cones, which is the surface sedimentation area to promote precipitation. Therefore, the separation efficiency of the separator according to the present invention is efficient.

[0012] When the fluid is sorted to the last accumulation cone, the fluid becomes clean and reaches acceptable standards so that it can be discharged from the fluid separator through the outlet of the fluid with smaller particles (lighter phase) or the outlet of the fluid whose particles are sorted to the required standards.

[0013] The fluid separator according to the present invention generates a forced vortex with a laminar vortex flow, and the vortexed fluid is therefore separated into corresponding layers according to its particle size or density, which is consistent with the fluid distribution under the action of centrifugal force. Therefore, it is easy to separate (i.e., separate layer by layer from the outer layer of the vortex to the inner layer). The fluid separator according to the present invention includes a plurality of stacked cones, which can be stacked in a limited area, and there are multiple spaces between these cones, and the large area of ​​the cone cover is used as a surface sedimentation area to promote precipitation, and the recycling system recycles part of the fluid back to the separation system for re-separation, so the fluid separator according to the present invention is efficient. Since the fluid separator according to the present invention can separate the contaminated fluid by using centrifugal force to achieve the desired cleanliness, no additional filtering device is required for further filtering before the fluid is discharged from the separator. Therefore, maintenance is rarely required, that is, no filter is required, and therefore no filter cleaning that affects health is required. Most importantly, there is no need for a filter that is easily clogged, and the suction efficiency of sucking out the fluid to allow the semi-vacuum to occur will not subsequently decrease due to a clogged dirty filter. Therefore, it is suitable for use as a filter in various applications, for example, in industrial vacuum cleaners, domestic vacuum cleaners, in particular portable vacuum cleaners or handheld vacuum cleaners.

[0014] A vacuum cleaner using a cyclone separator according to the above invention comprises: an inlet for dust and impurities sucked in with air; a preliminary separator for separating large impurities from fibrous garbage; a storage chamber for large impurities; a fine dust separator using the above stacked cone cyclone separator; a storage chamber for fine dust; and an outlet for filtered clean air.

[0015] The primary separator of the vacuum cleaner according to the present invention comprises: an inlet for dust and garbage sucked in with the air; a vortex generating device for generating a vortex flow based on the Coanda effect principle, the vortex generating device having a cone or a shallow dome, the vortex generating device comprising a fluid distribution chamber, an orifice and a convex surface located next to the outlet of the orifice, the convex surface being curved toward the outer peripheral surface of the gently sloping cone or the outer peripheral surface of the shallow dome; a vortex generating chamber / separation chamber for generating a vortex flow and separating impurities being a chamber surrounding the vortex generating chamber; a storage chamber, the storage chamber being used to collect large, elongated or fibrous impurities, the storage chamber being a lower cavity adjacent to the lower part of the vortex generating or separation chamber; a connecting channel, the connecting channel connecting the downstream part of the vortex generating chamber or the separation chamber with the stacked cone cyclone separator according to the present invention; a storage chamber for large impurities, which is detachable to facilitate the handling of impurities.

[0016] When impurities and dust are sucked in through the inlet along with the air, they are collected in the fluid distribution chamber of the vortex generating device, which is cylindrical, and the end of the vortex generating device is connected to a gently sloping cone or a shallow dome to distribute the fluid to the orifice around the cone or dome cover. Next to the outlet of the orifice is a convex surface that curves toward the circumferential cover outside the cone or shallow dome, and the convex surface is the surface closest to the exit axis of the orifice. When the fluid containing air and impurities is sucked into the outer cover from the inside of the cone or shallow dome through the orifice, under the influence of the Coanda effect, the fluid as air and impurities is deflected to flow along the convex surface attached to the orifice symmetrically installed around the cone or shallow dome, and a forced vortex with a laminar vortex flow is generated around the cone or shallow dome through the concentric spiral channel of the orifice. The vortex generating device is surrounded by a vortex generating chamber, the cover of the vortex generating chamber is conical, and the edge of the vortex generating chamber is located below the base of the vortex generating device. That is, the cover of the vortex generating chamber extends to the bottom of the vortex generating device, and under the action of the centrifugal force generated by the vortex, the impurities with larger particles are subjected to the action of the larger centrifugal force and are thrown out to the outermost layer, thrown to the flow of the cover of the vortex generating chamber or the separation chamber, and vortexed downward to the storage chamber for large particle impurities, where the large impurities are stored. The air polluted with smaller impurities is subjected to the action of the smaller centrifugal force, and will vortex at the inner layer, and continuously vortex to the dust separator, that is, the stacked cone fluid cyclone separator according to the present invention, through the connecting channel connected to the fluid inlet of the fluid separator according to the present invention. The fine dust is sucked and blown into the fluid distribution chamber of the vortex generating device, and the vortex generating device generates a vortex flow based on the Coanda effect principle to accelerate the vortex speed in the vortex generating chamber. Subsequently, the dust is centrifuged and dispersed into layers, and then separated in the separation chamber, which is the gap space between the cones, and the separation chamber is formed by the stacked downstream opening end of the stack of the stacked cones, and at the vortex reversal point, the reverse vortex promotes the cone to reverse the vortex. As described above, with the fluid separator having stacked cones according to the present invention, dust will be collected at the storage chamber for fine dust, and the sorted clean air will be discharged from the vacuum cleaner at the outlet.

[0017] The vacuum cleaner according to the present invention separates dust and impurities through a separation section, which includes stacked cones, which are a large number of cones that can be stacked in a limited area, and a connecting channel is connected between a fluid collection channel for larger or higher density particles and a fluid inlet to circulate the fluid back to the separation system. Suctioning the fluid back to the separation system causes the fluid to swirl downward through each gap space between the cones. This allows the separator to be efficiently separated even in a compact size, and is therefore suitable for portable vacuum cleaners or handheld vacuum cleaners. In addition, since the vortex generated is a laminar forced vortex, impurities and dust can be efficiently separated. Dust can be completely separated from the air before being discharged from the vacuum cleaner, and no filter bag or filter layer is required to re-filter the purified air to reach the cleanliness standard, and then discharged from the cleaner. In addition, the vacuum cleaner according to the present invention is provided with a preliminary separator, which is used to separate large, elongated or fibrous impurities before the fluid separation process in the separator according to the present invention, thereby preventing the clogging of the fine dust separation section. The vacuum cleaner according to the present invention is not easy to be clogged, the suction efficiency is stable, and the suction power does not decrease. Since the vacuum cleaner according to the present invention has two storage chambers, one storage chamber for large fibrous impurities and the other storage chamber for fine dust, the dust in the storage chamber for dust can be processed through the garbage chute without being spread out to cause any harm to health. Fibrous or large impurities will not generate diffusive dust that is harmful to human health during processing. According to the above details, the vacuum cleaner according to the present invention has better or more superior advantages than conventional vacuum cleaners.

[0018] The vacuum cleaner according to the present invention can also be effectively applied to various separation processes in industrial plants, filtration of combustion chamber intake air of engines, and dust filtration of air conditioners. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings.

[0020] Figure 1A A stacked cone cyclone separator and a vacuum cleaner including the fluid separator are shown;

[0021] Figure 1B Shows the details of the vortex flow system of the stacked cone cyclone separator;

[0022] Figure 2 A stacked cone cyclone separator with a Coanda sieve cone and a vacuum cleaner including the fluid separator are shown;

[0023] Figure 3A A vortex generating device having fixed blades is shown;

[0024] Figure 3B Details of a vortex generating device with fixed blades and a schematic outline of said device are shown;

[0025] Figure 3C shows details of the stationary blades adjacent to the hub as viewed from the inside;

[0026] Figure 4A A vortex generating device having guide vanes is shown;

[0027] Figure 4B Details of a vortex generating device with guide vanes and a schematic outline of said device are shown;

[0028] Figure 4C Shown is a detail of the guide vanes adjacent to the hub as viewed from the inside;

[0029] Figure 5A shows a schematic outline of a vortex generating device for generating vortices based on the Coanda effect principle;

[0030] Figure 5B A vortex generating device for generating vortex based on the Coanda effect principle is shown;

[0031] Fig. 6A The Conda sieve cone is shown;

[0032] Figure 6B A schematic outline of a Conda sieve cone is shown;

[0033] Fig. 7A A cone vortex generating device is shown;

[0034] Figure 7B The cross-sectional profile of the cone vortex generating device is shown;

[0035] Figure 7C A top view of a cone vortex generating device is shown;

[0036] Fig. 8A A shallow circular dome vortex generating device is shown;

[0037] Figure 8B A cross-sectional profile of a shallow circular dome vortex generating device is shown;

[0038] Figure 8C A top view of a shallow circular dome vortex generating device is shown;

[0039] Fig. 9A The acceleration gradient distribution of the forced eddy current is shown;

[0040] Fig. 9B shows the distribution profile of fluid particles under the centrifugal force generated by the forced vortex;

[0041] Fig. 10A A vacuum cleaner comprising a fluid separator according to the invention and using a floor vacuum head is shown;

[0042] Fig. 10B A vacuum cleaner comprising a fluid separator according to the invention and using a round brush vacuum head is shown;

[0043] Fig. 10C A vacuum cleaner comprising a fluid separator according to the invention and using a cutting edge vacuum head is shown. DETAILED DESCRIPTION

[0044] according to Figure 1A A stacked cone cyclone separator (1) according to the present invention comprises: a fluid inlet (10); a vacuum motor fan (11, 12), the vacuum motor fan being installed between the fluid inlet and a vortex generating device for generating a partial vacuum to draw fluid into the separator through the fluid inlet; a vortex generating device (13), the vortex generating device being connected from the vacuum motor fan; a vortex generating chamber (14), the vortex generating chamber being installed after the vortex generating device; a separation section, the separation section being axially installed after the vortex generating chamber, the separation section comprising: an internal cavity (27) formed by the stacked downstream open ends of the stacked cones; at least one gap space (16) between the stacked cones; a fluid collection channel (18) for larger particles or higher density, the fluid collection channel for larger particles or higher density being located at the upstream open end of the stacked cones (at least one cone (15)); a reverse vortex promoting cone (23) , the reverse vortex promoting cone is installed at the lower end of the fluid collection channel for the larger or higher density particles; an annular space (20) for fluid separation, the annular space is the annular space between the cover (19) of the fluid collection channel for the larger or higher density particles and the reverse vortex promoting cone (23), the annular space is used to separate the fluid with larger particles or higher density (heavier phase) from the fluid with smaller particles or lower density (lighter phase) to the storage chamber (21) for larger or higher density particles (heavier phase); a connecting channel (25), wherein its inlet (24) is installed at the end of the reverse vortex promoting cone to recirculate the fluid to the separation process, wherein the outlet (26) of the connecting channel is connected to the fluid inlet located before the vacuum motor fan; an outlet (32) for discharging the fluid with smaller particles or lower density (lighter phase) from the fluid separator according to the present invention, the outlets are sequentially located downstream of the stacked cones.

[0045] The vacuum motor fan (11, 12) operates to draw the fluid into the separator and blow the fluid through the vortex generating device (13) to generate a vortex to swirl to the downstream of the separator according to the present invention. The vacuum motor fan can be implemented as a motor and a fan both coupled together, or the motor and the fan are separated and separated from the flow path of the fluid to avoid the motor being contaminated by the fluid to be separated and damaged, or in the case where the separated fluid is a liquid, the motor is installed outside the fluid flow path to transmit its rotational power to the fan installed between the fluid inlet and the vortex generating device through a shaft fixed to the chassis and the bearing to prevent the motor from being wetted by water.

[0046] In order to make the fluid separator according to the present invention work more efficiently, a vortex generating device which generates a forced vortex with a laminar vortex flow is preferred. As described below, there are different types of such devices.

[0047] Figure 3A , Figure 3B and Figure 3CA vortex generating device is shown, which has a fixed blade (300) with an aerodynamic surface (303), wherein the fixed blade is installed in an annular space between a hub (301) and a cover (302) of a cylindrical tube or a conical tube, and the hub hole (314) is covered so that the fluid only passes through the annular space, and the required flow size and flow direction can be obtained, that is, the fluid flows through the fixed blade with a high velocity component and a high tangential component in the flow, wherein the leading edge (304) of the fixed blade is convexly curvatured, and the blade ridge (305) is curved with a convex curvature from the leading edge (304) to the trailing edge (306) to generate a Coanda effect, wherein the Coanda effect deflects the fluid into an attached flow along the convex surface of the blade ridge, and the thickness of the concave side (307) of the blade is increased to reduce the degree of its concave curvature, thereby reducing the flow turbulence and promoting the flow to adhere to the convex surface of the previous fixed blade, and the outer edge (308) of the fixed blade is curved at a larger angle and extends longer than the inner edge (309) of the fixed blade. The trailing edge (306) of the fixed blade is slightly curved downward, and the downward curvature turning point (310) at the outer edge of the fixed blade is curved downward to a lower height (relative to the height of the hub) than the downward curvature turning point (311) at the inner edge of the fixed blade. The space between the trailing edges (313) of the fixed blades should be smaller than the space between the leading edges (312) of the fixed blades to increase the speed of the wake of the fixed blades. The fixed blades with the aforementioned aerodynamic surface are symmetrically installed around the hub, wherein the wide side of the fixed blade is installed in the annular space between the hub (301) and the cover (302) in the transverse direction, and is concentrically curved in the longitudinal direction from the upstream to the downstream of the annular space. At the open end downstream, the outer edge of the fixed blade is curved downward lower and for a longer distance than the inner edge of the fixed blade. This will create a tapered surface around the hub. The fixed blades are installed relative to the blowing direction of the vacuum motor fan to allow the fluid driven by the vacuum motor fan to impact the leading edge at the convex surface of the ridge side of the fixed blade. Due to the Coanda effect, the fluid deflected to flow along the convex surface of the blade ridge is curved convexly from upstream to downstream of the fixed blade along the flow path A. Since the fixed blades are placed around the hub, a vortex is generated around the hub along the flow path B. Fig. 9A In the "acceleration gradient distribution" (900), the vortex acts as a forced vortex, and the vortex velocity is the largest at the outer edge, and then the velocity decreases in the inner layer. Since the centrifugal force varies directly with the vortex velocity, the maximum centrifugal force is reached at the outermost layer and then decreases in the inner layer. Due to the Coanda effect, the fluid that is deflected to adhere to the surface produces a laminar vortex flow. Fluids with larger particles or higher density are subject to a larger centrifugal force and vortex in the outer layer, while fluids with smaller particles or lower density are subject to a smaller centrifugal force and vortex in the inner layer (901), such as Fig. 9B Figure 4 shows the dispersion of fluid particles when subjected to the centrifugal force generated by the forced vortex.

[0048] Figure 4A, Figure 4B , Figure 4C A vortex generating device (400) with guide vanes is shown. The vortex generating device is a device equipped with guide vanes (403) in the space between the hub (401) and the outer cover (402) of a cylindrical tube or a conical tube. The hub hole (414) is closed so that the fluid flows only through the annular space. The guide vanes are installed from upstream to downstream of the cylindrical tube or the conical tube to generate vortices, wherein the wide side of the guide vanes is installed in the space between the hub (401) and the outer cover (402) of the cylindrical tube or the conical tube in the transverse direction. The long side of the guide vane is installed axially from upstream to downstream in the longitudinal direction and is concentrically curved in the transverse direction. The ridge side (405) of the guide vane is convexly curved from the front tip (404) of the guide vane to the end (406), wherein the end (406) of the guide vane forms a transverse concentric spiral twist. The outer edge (408) of the guide vane is curved downward, lower and longer than the inner edge (409) of the guide vane. The end of the guide vane is slightly bent downward. The outer edge of the guide vane at the downward bending turning point (410) is lower than the inner edge of the guide vane at the downward bending turning point (411) (relative to the hub). Multiple guide vanes are stacked separately to have spaces between the guide vanes and symmetrically surround the hub of a cylindrical tube or a conical tube, which will provide the guide vanes to bend around the hub. The guide vanes are bent downward at the end portion and bent around the assembled hub to form a cone around the hub. When the fluid flows through the space between the guide vanes, due to the Coanda effect, the fluid is deflected to flow along the arrow of the streamline A attached to the convex surface of the guide vane. Since multiple guide vanes are symmetrically installed around the hub, the flows from each guide vane relay each other to generate a vortex flow around the hub along the direction of the arrow of the stream line B on the surface of the concentric curved guide vane. Due to the Coanda effect, the fluid attaches to the guide vane flow to generate a laminar vortex flow. Due to the concentric curvature of the guide vane, the outer edge of the guide vane is curved more and longer than the inner edge of the guide vane, and the outer edge of the guide vane is curved to a lower position than the inner edge of the guide vane. This will produce a forced vortex, in which the vortex velocity reaches its highest value at the outermost layer of the vortex. Since the centrifugal force varies directly with the velocity of the vortex, the vortex velocity decreases as the vortex approaches the center of the vortex. The centrifugal force is largest at the outermost layer of the vortex, and is smaller at the inner layer of the vortex. Fluids with larger particles or higher density that are subject to larger centrifugal forces vortex at the outer layer; fluids with smaller particles or lower density that are subject to smaller centrifugal forces vortex at the inner layer. Since the generated vortex is a laminar vortex flow, the fluid particles are distributed into layers according to their size or density, and are therefore easily separated, which is in Fig. 9B Shown in.

[0049] Figure 5B and Figure 5AThe invention shows a vortex generating device (500) for generating vortex based on the Coanda effect principle. The generated vortex is a forced vortex with a laminar vortex flow. The vortex generating device is installed behind a vacuum motor fan. The vortex generating device is a conical or cylindrical transmission base (501) with an internal cavity (502), which includes a fluid inlet (113) of the vortex generating device, a fluid distribution chamber (114) of the vortex generating device, and the fluid distribution chamber is as shown in FIG. Figure 2 The transmission base (115) around the vortex generating device is installed to distribute the fluid into the internal cavity of the transmission base through the orifices (503) symmetrically arranged around the transmission base wall, thereby introducing the fluid into the internal cavity of the transmission base, and the internal cavity is used as a vortex generating chamber. Next to the orifice at the inner outlet is a convex surface (505) curved toward the inner wall of the transmission base next to the orifice. The convex surface (505) next to the orifice is installed as the surface closest to the orifice exit axis (a) compared with other surfaces around the orifice (503). When the fluid is driven through the orifice (503), due to the Coanda effect, the fluid is deflected to flow along the convex surface (505) curved toward the inner wall of the transmission base next to the orifice. Since the pressure on the curved surface is the lowest compared to other places in the internal cavity, this is because the wall separates the pressure from the convex curved surface when the internal cavity of the transmission base is filled with fluid, and the flow attached to the convex curved surface (505) next to the orifice induces the fluid in the internal cavity of the transmission base to be drawn in and flow along the convex curved surface (505) next to the orifice that bends toward the inner wall of the internal cavity of the transmission base along the arrow of the flow line A. Since the orifice (503) and the convex curved surface (505) next to the orifice are symmetrically arranged around the inner wall of the transmission base, the fluids from each group flow in relay around the inner wall of the transmission base, forming a vortex in the internal cavity of the transmission base along the vortex line B. Since the driving force at the outlet of the orifice adjacent to the convex curved surface is the largest, the vortex velocity is the highest at the convex curved surface, and gradually decreases according to the decreasing driving force as it vortexes toward the center of the vortex, in accordance with the above. Fig. 9A The acceleration gradient distribution (900) is shown. Since the centrifugal force varies directly with the vortex velocity, the centrifugal force is the largest at the outermost layer of the vortex. The centrifugal force gradually decreases according to the vortex velocity as the fluid swirls toward the center of the vortex. The fluid with larger particles or higher density (heavier phase) subjected to the greater centrifugal force swirls in the outer layer. The fluid with smaller particles or lower density (lighter phase) subjected to the smaller centrifugal force swirls in the inner layer. Fig. 9BAs shown in the distribution of fluid particles acted on by the centrifugal force generated by the forced vortex (901), the length of the vortex generating chamber extends beyond the orifice by a certain length to provide sufficient area to accelerate the vortex until the fluid is clearly distributed into layers before reaching the separation section. Since the vortex is generated by the Coanda effect, the vortex flow attached to the convex surface next to the orifice acts as a laminar vortex flow. This allows the fluid to be clearly separated into layers according to particle size or density (due to being free from turbulence interference). Therefore, the separation is easy to handle.

[0050] according to Figure 1AAccording to the present invention, the fluid separation section of the cyclone separator including the stacked cones having at least one cone (15) is a truncated cone, both the upstream and downstream open ends of which are axially installed after the vortex generating chamber (14), the downstream open end of the first stacked cone (15) is surrounded by the downstream open end of the vortex generating chamber (14), each cone is stacked separately to have a narrow gap space between the cones, at least one gap space (16) between the cones is provided, and the internal cavity (27) formed by the downstream open end of the stacked cones axially installed after the vortex generating chamber is used as a separation chamber, which can improve the separation efficiency, and the cones can be stacked so that The downstream open end of the subsequent cone is slightly arranged in front of the downstream open end of the previous stacked cone to form a conical internal cavity (27) axially installed after the vortex generating chamber (14), so that the diameter of the internal cavity gradually shortens in the longitudinal direction to serve as a separation chamber, and at the upstream open end or base of the stacked cone, there is a covering cone to cover the stacked cones, and an open space is provided between the covering cone and the upstream open end of the stacked cones to serve as a collection channel (18) for fluids with larger particles or higher density (heavier phase) separated from the separation chamber and the gap space between the stacked cones (the gap space (16) between at least one cone). The cone cover between the cones in the stacked cones and the cover (19) for the collection channel for fluids with larger particles or higher density act as a surface settling area to promote the separation process. A reverse vortex promoting cone (23) is installed at the bottom end of the collection channel for fluids with larger particles or higher density to promote reverse vortex, and an annular space (20) is provided between the reverse vortex promoting cone and the cover of the collection channel (19) for collecting fluids with larger particles or higher density to serve as a separation space. At this vortex reversal point, the fluid with larger particles or higher density attached to the cover vortex of the collection channel for fluids with larger particles or higher density is separated and vortexes through the annular space (20), which is a space for separation to enter the storage chamber (21) for fluids with larger particles or higher density. A valve (22) for opening and closing is installed at the wall of the fluid storage chamber for larger or higher density particles to discharge the fluid with larger particles or higher density from the storage chamber. A portion of the fluid with smaller particles or lower density swirling in the inner layer of the vortex flows upward along the reverse vortex of the reverse vortex promoting cone and enters the inlet (24) of the connecting channel (25). The connecting channel is the space between the reverse vortex promoting cone and the vortex generating device. The outlet (26) of the connecting channel is connected to the fluid inlet (10) located before the vacuum motor fan for sucking the fluid through the connecting channel (25), thereby circulating the fluid back to the separation system.

[0051] The storage chamber for larger or higher density particles may be equipped with a spiral ramp to guide the sorted fluid with larger or higher density particles to flow downward through the inlet of the storage chamber equipped with a check valve to the storage chamber for larger or higher density particles. The flow direction of the check valve allows one-way flow into the storage chamber, but does not allow backflow from the storage chamber. This is to prevent the fluid particles contained in the storage chamber from being drawn out when the fluid separator is turned on. An on-off valve (22) may be placed at the bottom of the storage chamber to remove the fluid particles that have been melted inside from the storage chamber.

[0052] Figure 2 A separation section of a fluid separator according to the invention is shown with a Coanda sieve cone (117) having both upstream and downstream open ends, the hollow interior of the Coanda sieve cone serving as an internal cavity (128) which is axially mounted to connect from a vortex generating chamber (116) further downwardly to the downstream open end (131) of the Coanda sieve cone where there is an outlet (132) for carrying the separated fluid out of the fluid separator. Fig. 6A , the Coanda sieve cone (600) is a cone having an upstream open end (601) and a downstream open end (602). The inner cavity of the Coanda sieve cone acts as a separation chamber. The Coanda sieve cone consists of a conical structure whose cover is covered with a wedge wire (603). According to Figure 6B, the wedge wire is a wire with a triangular cross-section. The wedge wire is longitudinally attached to the conical structure so that there is a narrow space (604) between the wedge wires. The wedge wire is wrapped around the cone, except for the equal space between the wedge wires, where the flat side (b) of the wedge wire faces inward as an inner cone cover. The wedge wire at the tip (h) of the triangle faces outward as an outer cover of the cone. Due to the curvature of the circumference of the cone, the flat side of the subsequent wedge wire (from the flow direction of the fluid swirling inside the cone) has a rise angle of w degrees with the flat side of the previous wedge wire. This allows the flow path inside the cone to flow directly from the flat side of the previous wedge wire to the triangular side (h) of the subsequent wedge wire, as shown by the solid flow line. Fluids with larger particles or higher density (heavy phase) swirl at the outer layer due to the larger centrifugal force generated by the vortex generating device, and have accelerated the vortex in the vortex generating chamber until the fluid particles are separated into layers according to size or density, wherein the fluid with larger particles swirls at the outer layer, while the smaller or lower density particles swirl at the inner layer. Fluids with larger particles or higher density swirl at the outer layer and adhere to the inner cover (which is the flat side of the wedge wire) of the cone and swirl. Due to the curvature of the circular cone, the subsequent wedge line has a rising angle relative to the previous wedge line. Due to the Coanda effect, the fluid that flows along the surface is therefore attached to the flat side of the wedge wire nozzle and flows, and directly adheres to the triangular side (h) of the wedge wire through the space (604) between the wedge wires. Due to the Coanda effect, the fluid adheres to the hood at the triangular side of the wedge wire and flows out of the Coanda sieve cone (600), while the fluid with smaller particles or lower density that was previously swirling in the inner layer of the vortex will flow outward to replace the fluid with larger particles flowing out of the Coanda sieve, and then adheres to the inner cone hood (which is the flat side (b) of the next wedge wire), and then flows through the space (604) between the wedge wires, attaches to the triangular side (h) of the wedge wire and flows out of the Coanda sieve cone (600). This separation process is always happening, and the fluid continues to swirl in the Coanda sieve cone until it swirls to the end of the cone (602). The fluid that swirls and is completely sorted in the cone will be discharged at the outlet for fluid with smaller particles or lower density. According to Figure 2, the Coanda sieve cone (117) will be covered by a solid cone (119), and a space is left between the solid covering cone and the Coanda sieve cone to serve as a collection channel (118) for fluids with larger particles or higher density. The fluid separated from the Coanda sieve cone still has an inertial force, which causes the fluid to adhere to the cover vortex of the covering cone, which is the cover (119) of the collection channel for fluids with larger particles or higher density. At the bottom of the collection channel for larger or higher density particles, a cone (123) for promoting reverse vortex is installed to form an annular space (120) between the cover (119) of the covering cone and the reverse vortex promoting cone (123) to serve as a space for separation. At this vortex reversal point, the fluid with larger particles or higher density swirling attached to the inner cover (which is the cover (119) of the collecting channel) covering the cone will flow downward through the annular space (120) (which is the space for separation) and flow downward to the storage chamber (121) for the fluid with larger particles or higher density. An on-off valve (122) can be installed at the cover next to the storage chamber for the fluid with larger particles to discharge the fluid with larger particles from the storage chamber for the fluid with larger particles. A portion of the fluid with smaller particles or lower density swirling at the inner layer swirls in the reverse vortex promoting cone (123) and enters the inlet (124) of the connecting channel (125), which is the space that brings the fluid back to the separation system at the outlet (126), and the outlet is connected to the fluid inlet (110) located before the vacuum motor fan (111, 112). In order to prevent the fluid swirling in the collection channel for fluids with larger particles or higher density from taking a shortcut and flowing into the connecting channel (125) before the fluid swirls downward to the annular separation space (120) and becoming the fluid that is brought back to the separation process. This can be prevented by installing a shortcut flow prevention cone (127) to cover the reverse vortex promotion cone, leaving a certain space between the base of the shortcut flow prevention cone (127) and the cover (119) of the collection channel for fluids with larger particles or higher density, so that the fluid with larger particles will swirl downward to the vortex reversal point. The fluid with larger particles or higher density is separated downward to the storage chamber for the fluid with larger particles or higher density through the annular separation space (120). The fluid with smaller particles or higher density will reversely swirl along the reverse vortex promotion cone to circulate to the separation process through the connecting channel (125) by suction.

[0053] Figure 1A and Figure 2The invention shows a sorting fluid passing through a separation section, which is a stack of cones (at least one cone (15)) or a wall screen cone (117), and the sorting fluid will be taken out of the fluid separator at the outlet for the fluid with smaller particles or lower density (light phase), and the fluid with larger particles or higher density can be separated from the fluid with smaller particles or lower density in a more complete manner before the fluid is discharged from the last stack of cones (28) or Coanda sieve cone. A cylindrical pipe (29, 129) will be installed at the downstream open end of the last stack of cones or Coanda sieve cones (28, 117), and the cylindrical pipe (29, 129) will be installed at the downstream open end of the last stack of cones or Coanda sieve cones (28, 117). The cylindrical tube is smaller than the downstream open end of the last stacked cone or Coanda sieve cone (28, 117), wherein the end of the cylindrical tube is longer than the end of the cone to provide a space (30, 130) as a collection channel for fluids with larger particles or higher density, the collection channel is connected to the main collection channel (18, 118) for fluids with larger particles or higher density, wherein there is: a cone covering the last stacked cone, where the cover of the cone covers the end cover of the cylindrical tube and the cover of the fluid collection channel (19); or a top plate, which connects the end cover of the cylindrical tube and the cover of the fluid collection channel (119). The annular space between the downstream open end of the cone and the cylindrical tube is a space for separating fluids with larger particles or higher density, the fluid swirls at the outer layer to return to the fluid collection channel (18, 118) for fluids with larger particles or higher density.

[0054] Figure 1BThe operation of the fluid separator according to the present invention is shown, starting from the vacuum motor fan (11, 12) sucking in the fluid through the fluid inlet (10) and blowing it towards the vortex generating device (13). The vortex generated by the vortex generating device (as shown by the vortex line with five arrows) will swirl in the vortex generating chamber (14) for a certain time interval, up to the length of the vortex generating chamber. If the vortex generating chamber is conical, the vortex speed will be accelerated longitudinally along the ever-shortening circumference of the conical vortex generating chamber. The vortex swirl lasts for a certain time interval and continuously accelerates the vortex speed longitudinally along the ever-shortening circumference. Therefore, the centrifugal force increases with the increase in speed. The fluid is continuously subjected to the centrifugal force. Therefore, the fluid is clearly separated into layers according to the size or density of the fluid particles. The fluid with larger particles or higher density (heavy phase) subjected to the greater centrifugal force swirls at the outer layer of the vortex. A part of the fluid with smaller particles or lower density (lighter phase) subjected to the smaller centrifugal force will swirl at the inner layer of the vortex. When the vortexed fluid is separated into layers according to the size or density of the particles in the vortex generating chamber, the vortex is vortexed to the fluid separation section. In the case where the separation section of the cyclone fluid separator according to the present invention is a stacked cone, there is a space between the cones to increase the surface sedimentation area to promote separation. When the fluid vortexes to the first gap space between the cones (16), the outer layer of the vortex (which is a fluid with larger particles or higher density (heavy phase)) will be thrown out under the action of centrifugal force to attach to the inner cover vortex of the second stacked cone (17). The fluid with smaller particles previously vortexed at the inner layer will vortex outward to replace the outer layer and attach to the upper inner cone cover vortex, as shown by the vortex line with five arrows. Therefore, the fluid with larger particles is driven by the above process and is sucked from the fluid inlet through the connecting channel (which is connected to the collection channel of the fluid with larger particles located at the upstream open end or base of the stacked cones) to vortex downward to the space (16) between the cones, as shown by the vortex line with four arrows. Under the action of the centrifugal force generated by the vortex, the fluid is therefore attached to the inner cone cover vortex, and by attaching to the inner cone cover and covering the cone cover vortex, the cone cover is the cover (19) of the fluid collection channel for fluids with larger particles or higher density, as shown by the vortex line with three arrows, these cone covers are surface sedimentation areas for accelerating separation. When the fluid vortex reaches the end of the fluid collection channel. The fluid with larger particles or higher density vortexes downward through the annular space (20) (which is a space for separation) between the cover (19) of the collection channel and the reverse vortex promoting cone (23), and reaches the storage chamber (21) for the fluid with larger particles or higher density (heavier phase) downward. The fluid with smaller particles or lower density vortexing at the inner layer vortexes upward in the opposite direction along the reverse vortex promoting cone (23), as shown by the vortex line with two arrows.When the fluid swirls to the tip of the cone, the fluid will swirl downward to the inlet (24) of the connecting channel (25) (the inlet is the space between the reverse vortex promoting cone (23) and the cover of the vortex generating device, as shown by the vortex line with an arrow), and is connected to the fluid inlet (10) located before the vacuum motor fan (11, 12) via the outlet (26) of the connecting channel to be brought back to the separation system for separation again, where the suction force of the vacuum motor fan will draw the fluid through the connecting channel. The suction force will reduce the pressure in the fluid collection channel (18) for larger particles or higher density. Therefore, it draws the fluid downward into the collection channel (18) for larger particles or higher density fluid through the space between the stacked cones (the gap space (16) between at least one stacked cone), and the collection channel (18) for larger particles or higher particle density fluid is narrower at the upstream part and gradually widens when approaching the downstream part (based on the flow direction), so that the suction force can be thoroughly distributed. Therefore, the fluid flows thoroughly through each gap space between the stacked cones (at least one gap space (16) between the stacked cones) without any shortcut flow. The fluid that previously swirls from the vortex generating chamber and flows at the inner layer will change to swirl outward and will be thrown out to attach to the inner cover vortex of the upper part of the stacked cone (17) (as shown by the vortex line with five arrows), continue to swirl beyond the downstream open end of the cone, and then it will be thrown out to attach to the inner cover vortex of the next stacked cone. The above separation process is repeated according to the number of spaces between the stacked cones, so that a large number of cones can be stacked in a limited area after the vortex generating chamber along the longitudinal axis direction. The separation process will be repeated until the last stacked cone. There are many spaces between the stacked cones, so the number of inner cover areas of the stacked cones is large, which are surface settling areas for precipitation, so that separation is formed at each cone opening end, at the inner cone cover surface at the space between the cones, at the cover of the cone cover surface (which is the cover of the collection channel for fluids with larger particles or higher density), and at the annular space between the cover of the collection channel for fluids with larger particles or higher density and the reverse vortex promoting cone (which is the space for separation). Therefore, the separator according to the present invention continuously separates the fluid, so the separation is very efficient. This enables the fluid to be sorted to meet the required standards without the need to use an additional filter as the final separation before the fluid is discharged from the separator.

[0055] according to Figure 1A and Figure 2In the case where the separation section is a stacked cone, in order to distribute suction so that the fluid is thoroughly sucked through each gap space (at least one gap space (16) between the stacked cones), or in the case where the separation section is a Coanda sieve cone, the suction is distributed so that the fluid is thoroughly sucked through each space between the wedge wires. The collection channel (18, 118) for fluids with larger particles or higher density is located at the upstream open end of the stacked cones, or outside the Coanda sieve cone, and the width of the upstream part of the collection channel is narrower than that of the downstream part (upstream / downstream is described based on the flow direction), wherein the width gradually increases in the longitudinal direction.

[0056] The separator according to the present invention has a compact structure and high efficiency, because the centrifugal force generated by the forced vortex generated makes the particles clearly separate the fluid particles into vortex layers according to the size or density of the particles. The fluid with larger particles or higher density vortexes at the outer layer, and the fluid with smaller particles or lower density vortexes at the inner layer, so it is easy to separate. Since a large number of cones are stacked in a limited area, the surface of the cone cover as the surface sedimentation area is larger, thus promoting separation. Since there are multiple separation stages in the separation section, that is, in the separation chamber as the axial cavity of the stacked cone, wherein the separation is generated by the vortex in the axial cavity from one cone to another until the last stacked cone, the separation is generated by the vortex of the vortex attached to the cone cover in the gap space between the large number of stacked cones, the separation is generated by the vortex attached to the vortex of the collection channel cover vortex for the fluid with larger particles or higher density, and the separation is generated by the reverse vortex flow. Therefore, the fluid can be sorted to meet the requirements without an additional filter. Therefore, the separator is not easy to be blocked and does not require frequent maintenance. It is therefore suitable for use as a domestic vacuum cleaner, in particular a portable vacuum cleaner or a handheld vacuum cleaner.

[0057] Figure 1A and Figure 2A vacuum cleaner using the fluid separator according to the present invention is shown, which comprises two main parts, namely a preliminary separation section (2, 102) for separating large, elongated or fibrous impurities and a fluid separation section, which is the above-mentioned fluid separator (1, 101) according to the present invention. The preliminary separation section includes an inlet (3, 103) for impurities sucked in with the air; a vortex generating device (4, 104); a vortex generating chamber (5, 105); a vortex generating chamber cover (6, 106); a large fiber impurity storage chamber (8, 108); a large fiber impurity storage chamber cover (7, 107); a concave side cover (9, 19) of the storage chamber for large fiber impurities adjacent to the inlet pipe for impurities sucked in with the air; a connecting channel (10, 110) axially connected to the fluid separator (1, 101) of the present invention; and a vacuum cleaner handle (33, 133) axially extending from the outlet of the fully sorted air, the vacuum cleaner handle being a telescopic handle, which can be extended / retracted to adapt to work requirements.

[0058] The inlet for impurities sucked in with the air can be connected according to Fig. 10A Connect to the floor vacuum head (1000) or to Fig. 10B The round brush vacuum head (1001) is connected, or connected with the Fig. 10C The cutting edge vacuum head (1002) is connected.

[0059] The vortex generating device used in the preliminary separation section for large impurities may be a conical or shallow circular dome vortex generating device.

[0060] according to Fig. 7A , Figure 7B , Figure 7CA conical vortex generating device (700) is shown, which is a conical transmission base (701). The interior of the hollow cone is an internal cavity (704) for fluid distribution, and the internal cavity is connected to the impurity inlet, and the impurity inlet sucks impurities together with the air carrying the fluid through the cone base. If the conical transmission base is larger than the fluid inlet pipe, the part below the conical base that is larger than the fluid inlet pipe will be covered by the lower cover so as to be connected to the fluid inlet, thereby guiding the fluid to flow to the conical transmission base. An orifice (702) is provided at the cone cover, and the orifice is concentrically curved and passes through the cone cover from the inside to the outer cone cover. The orifice is a long channel installed at a certain degree above the edge of the cone base. The orifice space can have the same width as the entire orifice. A plurality of orifices and convex surfaces next to the orifices are symmetrically arranged around the cone. The exit axis (a) of the orifice is adjacent to the convex surface (703) next to the orifice, and the convex surface is a surface curved along the shape of the outer cone cover. The convex surface (703) beside the orifice is the surface closest to the exit axis (a) of the orifice compared to the surface around the exit axis (a) of the orifice. The orifice (702) is concentrically curved, and the tail section of the orifice is more concentrically curved or bent than the head section. Multiple orifices and the convex surfaces beside the orifices are symmetrically arranged around the cone. In the case of the above-mentioned layout of the orifice, the exit axis of the orifice, and the convex surface (703) beside the orifice, due to the Coanda effect, when the fluid is sucked or driven through the orifice, even if the convex surface of the cone deviates beyond the exit axis (a) of the orifice, the fluid will be deflected to flow attached to the convex surface (703) beside the orifice, flow attached along the convex surface (703) of the outer cone cover, and induce the fluid in the vortex generating chamber to flow attached along the convex surface (703) beside the orifice along the flow path A. Since the orifices are symmetrically placed around the cone, the fluid flows around the cone in relay, thereby generating a vortex flow around the cone along the flow path B. Due to the Coanda effect of fluid attachment to the surface flow, the generated vortex is a laminar vortex flow, and therefore does not cause turbulence. In the case of a conical fluid distribution chamber, the interval space between the orifices near the edge of the cone base will be narrowed, and the curvature of the tail section of the orifice will be more concentric, so the vortex velocity of the vortex at the outer layer is greater than the vortex velocity of the vortex at the inner layer, which is a forced vortex type vortex. Since the centrifugal force changes directly with the vortex velocity, the centrifugal force at the outer layer is higher than the centrifugal force at the inner layer.

[0061] Fig. 8A , Figure 8B and Figure 8CA vortex generating device with a shallow circular dome (800) is shown. The shallow dome is a transmission base (801). The interior of the hollow dome is an internal cavity (804), which is used as a fluid distribution chamber connected to the impurity inlet. Impurities are sucked in together with the air carrying the fluid through the cone base. If the shallow circular dome is larger than the fluid inlet, a cover will be provided below the dome base that is larger than the fluid inlet to guide the fluid flow to the shallow circular dome transmission base. At the dome cover, concentric curved orifices (802) extend from the inside of the dome to the outer cover of the dome, wherein the orifices are in the shape of a long channel extending to a certain extent from the edge of the dome base. The long channel orifice does not extend to the center of the dome tip. The orifice may have the same width along the entire length. Multiple orifices are symmetrically arranged around the circular dome, and next to the orifices is a convex surface curved along the shape of the dome. The convex surface (803) beside the orifice is set to be the surface closest to the exit axis (a) of the orifice compared with other surfaces around the exit axis (a) of the orifice. The orifice (802) is concentrically curved. The tail section of the orifice is more concentrically curved than the head section of the orifice, and the convex surfaces beside the plurality of orifices are symmetrically arranged around the cover of the shallow dome. When the fluid is sucked or driven through the orifice (802), due to the Coanda effect, the fluid flow will be deflected to flow along the flow path A attached to the convex surface (803) beside the orifice. Since the plurality of orifices and the convex surfaces beside the orifices are symmetrically arranged around the outer cover of the dome, the flow flows in relay to generate a vortex flow around the dome along the flow path B. Since the tail section of the orifice is more concentrically curved than the head section of the orifice, and the spacing space between the orifices becomes narrowest at the edge of the dome, the vortex velocity reaches its highest value at the edge of the shallow dome-shaped base. The vortex velocity decreases near the center of the circular dome. The vortex thus generated is a forced vortex. Due to the Coanda effect, the fluid adheres to the convex surface (803) next to the orifice and flows, so the vortex is a laminar vortex flow. This prevents turbulence. Since the centrifugal force varies directly with the vortex speed, the centrifugal force at the outer layer is higher than the centrifugal force at the inner layer.

[0062] Figure 1A and Figure 2The vortex generating chamber (5, 105) of the preliminary separation section is shown to be a cavity outside the vortex generating device, which originates from the cone covering the vortex generating device (4, 104), and a space is left between the covering cone and the vortex generating device. The covering cone cover (6, 106) of the vortex generating chamber extends below the base surface of the vortex generating device, and the vortex generating chamber cover (9, 109) forms a concave curve on the other side beside the fluid inlet. When impurities are sucked through the vortex generating device (4, 104) together with the air. Large impurities subjected to the maximum centrifugal force are thrown out to attach to the vortex generating chamber cover (6, 106) vortex, and then flow downward to the large impurity storage chamber (8, 108). Since the lower cover (7, 107) of the large impurity storage chamber is narrowed and the cover (9, 109) on the other side adjacent to the fluid inlet is concave, the impurities vortex into a ring inside the large impurity storage chamber (8, 108) under the inertial force of the vortex. The large impurity storage chamber can be disassembled from the vacuum cleaner to handle the impurities, while small impurities such as dust swirling in the inner layer of the vortex will be sucked into the fluid separator (1, 101) according to the present invention via the fluid inlet (10, 110), and then enter the above-mentioned separation system of the fluid separator (1, 101) according to the present invention.

[0063] The vacuum cleaner described above is not only used as a household vacuum cleaner, but can also be applied to air filtration of air conditioners, air filtration of internal combustion engines, or dust filtration or fluid separation in industry. In order to improve the separation efficiency, an additional vacuum fan can be coaxially arranged with the main vacuum fan installed between the fluid inlet and the vortex generating device of the fluid separator, and the additional vacuum fan is installed at the fluid inlet and the vortex generating device of the preliminary separation section to increase the suction and discharge force so that the device can fully function. If the additional vacuum fan is installed at the fluid inlet of the preliminary separation section, the vortex generating device can also be a vortex generating device with a fluid guide vane, or a vortex generating device with a fixed blade to generate a vortex.

[0064] Best Mode of the Invention

[0065] The best mode of the present invention is the same as disclosed in the detailed description.

Claims

1. A stacked cone cyclone separator (1) having stacked cones, comprising: a fluid inlet (10); a vacuum motor fan (11, 12), the vacuum motor fan being installed between the fluid inlet and the vortex generating device; the vortex generating device (13); a vortex generating chamber (14), the vortex generating chamber being connected after the vortex generating device; A separation section, which is axially connected after the vortex generating chamber, and includes: an internal cavity (27) formed by the downstream open ends of the stacked cones; gap spaces between the stacked cones, that is, at least one gap space (16) between the stacked cones; a collection channel (18) for fluids with larger particles or higher density, the collection channel for fluids with larger particles or higher density being installed at the upstream open ends of the stacked cones; a reverse vortex promoting cone (23), the reverse vortex promoting cone being installed at the lower end of the collection channel for fluids with larger particles or higher density; an annular space (20) for fluid separation, the annular space being the collection channel for fluids with larger particles or higher density. The fluid separator further comprises: a storage chamber (21) for fluids with larger particles or higher density, the storage chamber for fluids with larger particles or higher density being installed after the annular space for separation; a fluid connecting channel (25), the fluid connecting channel being connected between the collection channel for fluids with larger particles or higher density and the fluid inlet, wherein the inlet (24) of the connecting channel is located at the end of the reverse vortex promoting cone, and the outlet (26) of the connecting channel is located next to the fluid inlet; an outlet (32) for fluids with smaller particles or lower density, the outlet for fluids with smaller particles or lower density being installed after the downstream opening end of the last stacked cone.

2. A stacked cone cyclone separator using a Coanda sieve cone as the main device for the separation process (101), comprising: a fluid An inlet (110); a vacuum motor fan (111, 112), wherein the vacuum motor fan is installed between the fluid inlet and a vortex generating device (115); and a vortex generating chamber (116), wherein the vortex generating chamber is installed after the vortex generating device. A Coanda sieve cone (117) as a main device in the separation process is axially connected after the vortex generating chamber. The Coanda sieve cone is a truncated cone with upstream and downstream open ends, and consists of a conical structure wrapped with wedge wires (603) at the hood. The wedge wires are wires with triangular cross-sections, which are longitudinally fixed to the conical structure and have narrow gap spaces (604) between the wedge wires, wherein the flat side (b) of the wedge wires faces inward as the Coanda The inner cone cover of the sieve cone, and the wedge wire at the triangular tip (h) faces the outside of the cone, and due to the curvature of the circumference of the Coanda sieve cone, the flat side of the subsequent wedge wire (based on the flow direction) has an ascending angle relative to the flat side of the previous wedge wire; a collection channel (118) for fluids with larger particles or higher density, the collection channel for fluids with larger particles or higher density is the space between the covering cone and the Coanda sieve cone; a reverse vortex promoting cone (123), the reverse vortex promoting cone Installed at the lower end of the collection channel for fluids with larger particles or higher density; an annular space (120) for fluid separation, which is the annular space between the cover of the collection channel for fluids with larger particles or higher density and the reverse vortex promoting cone (123); a storage chamber (121) for fluids with larger particles or higher density, which is installed after the annular space for separation; a fluid connecting channel (125), which is connected between the collection channel for fluids with larger particles or higher density and the fluid inlet, wherein the inlet (124) of the connecting channel is located at the end of the reverse vortex promoting cone, and the outlet (126) of the connecting channel is located next to the fluid inlet; an outlet (132) for fluids with smaller particles or lower density, which is installed after the downstream opening end of the Coanda sieve cone.

3. A vacuum cleaner comprising: The stacked cone cyclone separator having stacked cones according to claim 1; A preliminary separation section (2) is used to separate large impurities, and the preliminary separation section comprises: an inlet (3) for impurities sucked in with air; a vortex generating device (4); and a vortex generating chamber (5); A large impurity storage chamber (8), the vortex generating chamber of the preliminary separation section is connected to the fluid inlet (10) of the stacked cone cyclone separator having stacked cones according to claim 1.

4. A vacuum cleaner comprising: The stacked cone cyclone separator according to claim 2 using the Conda sieve cone as the main device for the separation process; A preliminary separation section (102) is used to separate large impurities, and comprises: an inlet (103) for impurities sucked in with air; a vortex generating device (104); and a vortex generating chamber (105); A large impurity storage chamber (108), wherein the vortex generating chamber of the preliminary separation section is connected to the fluid inlet (110) of the stacked cone cyclone separator using the Coanda sieve cone as a main device for the separation process according to claim 2.

5. A vortex generating device (300) with fixed blades, comprising: A stationary blade having an aerodynamic surface (303), the stationary blade being installed in an annular space between a hub and an outer shroud of a cylindrical tube or a conical tube, the space (314) of the hub being closed to allow fluid to pass only through the annular space, the leading edge (304) of the stationary blade being convexly curved to a certain extent, the ridge side (305) of the stationary blade being convexly curved along the entire length to the trailing edge (306) of the stationary blade, the concave curve side (307) of the stationary blade having a certain thickness, the outer edge (308) of the stationary blade being curved at a greater angle and extending longer than the inner edge (309) of the stationary blade, the stationary blade being slightly curved downward at the trailing edge (306) of the stationary blade, and the outer edge of the stationary blade being curved downward at a curvature turning point (310) to a depth greater than that of the stationary blade. The height at the inner edge bending turning point (311) is lower, the space (313) between the trailing edges of the fixed blades should be narrower than the space (312) between the leading edges of the fixed blades, the wide side of the fixed blade is installed transversely relative to the annular space between the hub and the cover of the cylindrical tube or the conical tube, the long side of the fixed blade is installed axially from the upstream of the annular space between the hub and the cover of the concentrically curved cylindrical tube or the conical tube to the downstream of the cylindrical tube or the conical tube, the fixed blade is installed relative to the blowing direction and angle of the vacuum motor fan to drive the fluid to collide with the ridge side of the leading edge of the fixed blade, and a plurality of fixed blades (303) are symmetrically installed around the hub in the annular space between the hub and the cover of the cylindrical tube or the conical tube.

6. A vortex generating device (400) with a guide vane, comprising: A guide vane (403) is installed in an annular space between a hub and a shroud of a cylindrical or conical tube, wherein the wide side of the guide vane is installed transversely, the long side of the guide vane is installed longitudinally, and the guide vane is concentrically curved around the hub from upstream to downstream in the annular space between the hub and the shroud of the cylindrical or conical tube, and the ridge side (405) of the guide vane is convexly curved from the front tip (404) of the guide vane to the end (406), wherein the end (406) of the guide vane is concentrically curved transversely and slightly curved downward, and the outer edge (408) of the guide vane is curved at an angle compared to the inner edge (409) of the guide vane. The guide vane has a greater degree and extends longer, the outer edge bending turning point (410) of the guide vane is bent downward to a lower height than the inner edge bending turning point (411) of the guide vane, the space (413) between the trailing edges of the guide vanes should be narrower than the space (412) between the leading edges of the guide vanes, the guide vanes are installed relative to the direction and blowing angle of the vacuum motor fan to drive the fluid to collide with the ridge side of the leading edge of the guide vane, the leading edge of the guide vane is the convex surface of the guide vane, and a plurality of the guide vanes are symmetrically installed around the hub in the annular space between the hub and the cover of the cylindrical tube or the conical tube.

7. A vortex generating device (500) for generating vortex using the Coanda effect principle, comprising: A transmission base (501), the transmission base having a conical or cylindrical shape, the interior of the transmission base being a hollow internal cavity (502) consistent with the conical or cylindrical shape of the transmission base; a fluid inlet (113); a fluid distribution chamber (114); an orifice (503), the orifice extending from the outside of the transmission base to the internal cavity; a convex surface (505) next to the orifice, the convex surface bending toward the inner cover of the transmission base; the convex surface next to the orifice being the surface closest to the exit axis (a) of the orifice compared to other surfaces around the exit axis (a), and a plurality of orifices and the convex surfaces next to the orifices are symmetrically installed around the transmission base.

8. A vortex generating device (700) having a cone shape for generating a vortex around an outer surface of a cone, the vortex generating device comprising: A conical transmission base (701), the interior of the conical transmission base being a hollow conical internal cavity (704) of the conical transmission base; A fluid inlet (3, 103), the fluid inlet is connected to the bottom of the cone base of the transmission base, the inner cavity (704) of the cone is a fluid distribution cavity; an orifice (702) installed at the cone cover, the orifice runs through from the inside of the cone to the outside of the cone, wherein the exit axis (a) of the orifice nozzle is adjacent to the outer cover of the cone, the orifice is a long channel extending upward to a certain extent from the edge of the base, the orifice is concentrically curved, wherein the tail section of the orifice is more curved than the head section of the orifice on the side close to the tip of the cone, next to the orifice is a convex surface (703) next to the orifice, the convex surface is a part of the cover surface of the cone transmission base, the convex surface (703) next to the orifice is the surface closest to the exit axis of the orifice compared with other surfaces around the exit axis of the orifice, and the multiple orifices and the convex surfaces next to the orifices are symmetrically arranged around the cover of the cone transmission base.

9. A vortex generating device (800) having a shallow dome for generating a vortex around the dome, the vortex generating device comprising: A shallow dome transmission base (801), the interior of the shallow dome is hollow, and the internal cavity (804) of the transmission base corresponds to the shape of the shallow dome; a fluid inlet (3, 103), the fluid inlet is connected to the base of the shallow dome, the base is the transmission base, and the internal cavity (804) of the shallow dome is a fluid distribution chamber; An orifice (802) installed at the dome cover, the orifice passes through from the inside of the dome to the outside of the shallow dome, wherein the exit axis (a) of the orifice is adjacent to the outer cover of the shallow dome, the orifice is a long channel extending upward to a certain extent from the edge of the base, the orifice is concentrically curved, wherein the tail section of the orifice close to the dome base is more curved than the head section of the orifice close to the dome tip, next to the orifice is a convex surface (803) next to the orifice, the convex surface is a part of the cover surface of the shallow dome transmission base, the convex surface (803) next to the orifice is the surface closest to the exit axis of the orifice compared to other surfaces around the exit axis of the orifice, and the multiple orifices and the convex surfaces next to the orifices are symmetrically arranged around the shallow dome transmission base.

10. The stacked cone cyclone separator having stacked cones according to claim 1, comprising the vortex generating device with fixed blades according to claim 5.

11. The stacked cone cyclone separator having stacked cones according to claim 1, comprising the vortex generating device with guide vanes according to claim 6.

12. The stacked cone cyclone separator having stacked cones according to claim 1, comprising a vortex generating device for generating vortex using the Coanda effect principle according to claim 7.

13. The stacked cone cyclone separator according to claim 2, which uses the Coanda sieve cone as the main device of the separation process, comprising the vortex generating device with fixed blades according to claim 5.

14. The stacked cone cyclone separator according to claim 2, which uses the Coanda sieve cone as the main device of the separation process, comprising the vortex generating device with guide vanes according to claim 6.

15. The stacked cone cyclone separator using the Coanda sieve cone as the main device in the separation process according to claim 2, comprising the vortex generating device for generating vortices using the Coanda effect principle according to claim 7.

16. The vacuum cleaner according to claim 3, comprising the stacked-cone cyclone separator according to claim 10.

17. The vacuum cleaner according to claim 3, comprising the stacked-cone cyclone separator according to claim 11.

18. The vacuum cleaner according to claim 3, comprising the stack-cone cyclone separator according to claim 12.

19. The vacuum cleaner according to claim 4, comprising the stack-cone cyclone separator according to claim 10.

20. The vacuum cleaner according to claim 4, comprising the stack-cone cyclone separator according to claim 11.

21. The vacuum cleaner according to claim 4, comprising the stack-cone cyclone separator according to claim 12.

22. The vacuum cleaner according to any one of claims 16, 17, 18, 19, 20 and 21, wherein the preliminary separation section comprises a vortex generating device having a cone shape for generating a vortex around an outer surface of a cone according to claim 8.

23. The vacuum cleaner according to any one of claims 16, 17, 18, 19, 20, and 21, wherein the preliminary separation section comprises a vortex generating device having a shallow dome for generating a vortex around the dome according to claim 9.

24. A stacked-cone cyclone separator according to any one of claims 1, 2, 10, 11, 12, 13, 14, and 15, wherein an opening and closing valve is installed next to a cover at the bottom of the storage chamber (21, 121) for fluids with larger particles or higher density for conveying the fluids with larger particles or higher density out of the storage chamber for fluids with larger particles or higher density.

25. According to claim 2, the stacked cone cyclone separator using the Coanda sieve cone as the main device of the separation process includes a shortcut flow prevention cone (127) for preventing the fluid vortexing in the fluid collection channel (118) for larger particles or higher density from taking a shortcut and vortexing directly to the connecting channel (125) located at the reverse vortex promoting cone (123) before flowing to the annular space (120) for separation, wherein the connecting channel is connected between the fluid collection channel for larger particles and the fluid inlet (110) of the fluid separator, wherein the shortcut flow prevention cone opens the space at the base of the cone so that the fluid in the fluid collection channel for larger particles or higher density will flow to the annular separation space.

26. The stacked cone cyclone separator according to claim 1 or 2, wherein a cylindrical pipe (29, 129) having upstream and downstream open ends is installed at the outlet (31, 131) located at the end of the separation chamber, the diameter of the cylindrical pipe being smaller than the diameter of the downstream open end of the last stacked cone (28) or the downstream open end of the Coanda sieve cone (117), and the annular space between the cylindrical pipe and the last stacked cone or the Coanda sieve cone serves as an annular separation space (30, 1 30) to separate the fluid swirling at the outer layer for the last time before discharging the remaining completely sorted fluid through the outlet (32, 132) out of the separator, the fluid being a fluid with larger particles or a higher density, the end edge of the cylindrical tube being higher than the downstream end of the last stacked cone or the Coanda sieve cone and being covered by the cone or the top plate to leave a certain space for discharging the sorted fluid to the collection channel (18, 118) for fluids with larger particles or a higher density so as to return to the separation system again.

27. A collection channel (18, 118) for fluids with larger particles or higher density of a stacked cone cyclone separator according to claim 1 or 2, wherein the channel is narrower upstream and gradually widens as it approaches downstream longitudinally (upstream / downstream is described based on the flow direction), and is capable of distributing suction from a vacuum motor fan through the collection channel (18, 118) for fluids with larger particles or higher density and the connecting channel (25, 125) between the fluid inlet (10, 110) to draw the fluid from upstream to downstream and thoroughly swirl downward through the gap space between the stacked cones (the gap space (16) between at least one stacked cone) or through the space (604) between all the wedge wires of the Coanda sieve cone to reach the collection channel for fluids with larger particles or higher density, so that perfect separation can be achieved due to sedimentation at the surface sedimentation area, which is the cover surface of the stacked cones or the space between the wedge wires of the Coanda sieve cone.

28. A vacuum motor fan installed between the fluid inlet and the vortex generating device of the stacked cone cyclone separator according to claim 1 or 2, wherein the fan blades are installed separately from the fan motor, wherein the blades are installed at the same position between the fluid inlet (10, 110) and the vortex generating device (13, 115) by isolating the motor outside the flow path of the fluid to prevent the motor from being contaminated by the fluid to be sorted, or in the case of liquid separation to prevent the motor from being wetted by water, and the motor is installed with a structure for transmitting the rotational force to the blades (11, 111) through a shaft.

29. A vacuum cleaner according to claim 3 or 4, wherein the vortex generating chamber (5, 105) of the preliminary separation section is conical, so that large impurities centrifuged by the centrifugal force from the vortex generating device (4, 104) collide with a cover of the conical vortex generating chamber (6, 106) extending below the base surface of the vortex generating device, thereby falling downward to a storage chamber (8, 108) for large impurities, the storage chamber cover (7, 107) being narrower at the bottom portion, and the storage chamber cover (9, 109) being provided at the inlet for the impurities sucked in with the air One side of the concavely curved toward the base of the vortex generating device, under the action of the inertial force of the vortex, the large impurities vortex with the air to the storage chamber cover (7, 107), and then adhere to the cover vortex concavely curved toward the base of the vortex generating device near the fluid inlet of the chamber, and then vortex into a collision with the cover (9, 109) of the conical vortex generating chamber, thereby generating a vortex in the storage chamber and causing the large impurities to vortex into a ring in the storage chamber to be accommodated in the storage chamber (8, 108) for large impurities.

30. A vacuum cleaner according to claim 3 or claim 4, comprising a telescopic handle (33, 133) which is extendable / retractable to suit working requirements.

31. A vacuum cleaner according to claim 3 or claim 4, which can be connected to a floor vacuum head (1000) or a round brush head (1001) or a knife-edge vacuum head (1002) for sucking impurities into the vacuum cleaner together with air through the fluid inlet (3, 103).

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