Cyclone separation structure, cyclone separator, cyclone separation device and dust collector

Abstract

Cyclone separation structure, cyclone separator, cyclone separation device and dust collector, including separation cone with truncated cone rotating cavity, the upper end of the separation cone is a large end and is provided with a cut-in port for external wind to enter; including a cylindrical shell, a plurality of rotating cavities are arranged annularly on the inner side of the cylindrical shell, part of the cylindrical shell forms part of the separation cone of the rotating cavity, and a plurality of separation cones surround to form a central passage; further comprising a plug, which blocks the upper end of the separation cone to allow the airflow in the rotating cavity to flow downward from the small end of the separation cone to the central passage; a cyclone separation device, comprising a dust cup and a cup cover, the upper part of the dust cup is provided with an open mouth, and the cup cover is detachably covered at the open mouth; further comprising a dust collector containing the cyclone separation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning appliances, in particular to a cyclone separation structure, a cyclone separator, a cyclone separation device and a dust collector. BACKGROUND

[0002] The dust collector is a commonly used cleaning appliance due to its strong cleaning ability and convenient use. People are constantly improving the dust collector to improve its cleaning ability, for example, by improving the air-dust separation structure to improve the air-dust separation efficiency. The common air-dust separation structure is a filter screen, and the interception of dust of different sizes in the air can be changed by adjusting the density of the filter screen. Although the use of high-density filter screen can improve the interception effect of dust, the accumulated dust will block the air holes of the filter screen and cause a large pressure drop in the air flow passage, thereby reducing the efficiency of the dust collector. As a zero-waste filter structure, the cyclone separation structure is generally provided upstream of the high-density filter screen to prolong the service life of the high-density filter screen.

[0003] As shown in Figure 1 The common cyclone separation structure is shown in the figure. This structure is to let the dust and air rotate at high speed in the conical cyclone barrel, and use the rotating centrifugal force to throw the dust with larger density to the barrel wall and make it slide down along the barrel wall and be discharged from the lower dust outlet. As disclosed in Chinese patent CN101049221A, a cyclone separation device for a dust collector is disclosed, which comprises a cyclone barrel, the cyclone barrel is provided with an air inlet and an air outlet, and the inner cavity of the cyclone barrel forms a cyclone separation chamber. Figure 1 It can be seen that the air outlet and the air inlet of the cyclone separation device are arranged at the large end of the cyclone barrel, and the air flow flowing from the air inlet rotates downward along the barrel wall to form an outer layer of rotational flow, and the outer layer of rotational flow is folded back upward after flowing to the bottom of the cone to flow to the air outlet. The cyclone separation device guides the air flow to form a folded flow path, and the outer layer of rotational flow and the inner layer of rotational flow are easily disturbed, and the vortex generated locally also increases the resistance of the air flow passage of the cyclone separation device to a certain extent, which affects the air-dust separation efficiency of the cyclone separation device. SUMMARY

[0004] In order to further reduce the resistance of the air flow passage of the cyclone separation device and improve the air-dust separation efficiency, the present application provides a cyclone separation structure, which comprises a separation cone body having a truncated conical rotating cavity, the upper end of the separation cone body is a large end and is provided with a cut-in port, and the cut-in port is used for entering external wind; characterized in that a baffle is arranged at the lower part of the separation cone body, and from the axis direction of the rotating cavity, the baffle is located outside the small end port of the separation cone body; the baffle has a windward surface capable of meeting the rotating wind, and the windward surface of the baffle extends downward out of the small end port of the separation cone body.

[0005] The separating cone is the main part of the cyclone separation structure, having a conical sidewall forming the truncated conical rotating cavity. The upper end of the separating cone is the larger cone end, and the lower end is the smaller cone end. The lower end is provided with a small port, which is a structure to accelerate the airflow rotation. Of course, the up and down direction here is only used to distinguish the two ends of the separating cone, and does not limit the placement direction of the separating cone in specific applications. For example, in one embodiment, the separating cone can be inverted, with the small port at the upper end (small cone end) and the inlet at the lower end (large cone end), which can also be achieved. Furthermore, the large cone end of the separating cone can also be provided with a section of straight cylindrical wall, which facilitates the arrangement of the inlet on the straight cylindrical wall.

[0006] The small port is the opening through which the airflow in the rotating cavity is discharged outward. The flow path of the airflow through the separation cone is as follows: external wind enters from the inlet at the upper end of the separation cone, and the wind entering the rotating cavity rotates downward along the side wall of the separation cone to form a rotating airflow, which can be discharged from the small port of the separation cone.

[0007] The baffle is a component used to block dust from being discharged from the small port of the separation cone. Due to the difference in density between dust and air, when the rotating airflow carries dust out of the small port of the separation cone, the dust is thrown outward along the tangent direction of the small port under centrifugal force. The baffle arranged on the outside of the small port of the separation cone is located exactly on the path of the dust being thrown out. The dust is blocked by the baffle and slides down along the windward side of the baffle, thereby achieving air-dust separation.

[0008] The baffle extends downward from the small port of the separation cone. After the rotating airflow leaves the small port of the separation cone, the dust is not only thrown outward along the tangential direction of the small port, but also moves downward along the axis of the rotating cavity under the action of inertial force. The baffle extends downward in order to better block the dust and achieve air-dust separation.

[0009] Specifically, when viewed from the central axis of the rotating cavity, the baffle is located outside the small port of the separation cone. This means that although the baffle extends along the radial direction of the rotating cavity, the projection of the baffle along the central axis of the rotating cavity does not fall into the small port of the separation cone.

[0010] The windward surface of the baffle is the surface on the baffle used to block the movement of dust. The windward surface varies depending on the structure of the baffle. For example, if the baffle is a thin, flat plate, the windward surface refers to one or more of its flat surfaces. When the baffle is curved or one side of the baffle is curved, the windward surface refers to the curved side of the baffle. Furthermore, when one baffle is connected to two separating cones, the front and back sides of the baffle can respectively serve as the windward surfaces of the two separating cones.

[0011] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0012] First, the air entering from the inlet forms a rotating airflow in the rotating cavity and carries the dust out from the small port of the separation cone. The rotating airflow does not need to turn back upwards, which makes the airflow path in the rotating cavity relatively simple. Compared with the prior art, it effectively solves the vortex formed by the interference of airflow from different directions, reduces the airflow resistance in the rotating cavity, and helps to improve the gas-dust separation efficiency.

[0013] Secondly, after the rotating airflow is discharged from the small port of the separation cone, the denser dust separates from the air under centrifugal force. By setting the baffle to block the dust, the dust falls and separates. This air-dust separation structure is simple, has high separation efficiency, and low resistance to airflow.

[0014] Third, the baffle is arranged on the outside of the small port of the separation cone. This not only helps the windward side of the baffle to block the dust separated outward, but also the baffle does not extend into the inside of the small port of the separation cone. The baffle does not obstruct the airflow in the middle, which helps to reduce the formation of vortices in the middle of the outside of the small port, thus allowing clean air to be discharged smoothly.

[0015] To arrange the baffle, a further technical solution is to connect the cantilevered baffle to the side wall of the separation cone.

[0016] To enhance the efficiency of gas-dust separation, the cyclone separation structure includes at least one baffle. When multiple baffles are arranged, they are spaced apart on the outside of the small port of the separation cone.

[0017] Of course, the structure and shape of the baffle are diverse. The following describes several common arrangement methods:

[0018] In the first case, the central axis of the rotating cavity falls on the geometric plane where the windward surface is located. That is, when viewed from the direction of the central axis of the rotating cavity, the windward surface extends outward along the diameter direction of the rotating cavity. The windward surface arranged in this way is close to the small port and can effectively block dust flying out along the tangent of the edge of the small port.

[0019] In the second configuration, the central axis of the rotating cavity is arranged parallel to the windward surface of the baffle, and the minimum distance between the geometric plane containing the windward surface and the central axis of the rotating cavity is less than the radius of the small port. Although the windward surface is offset from the central axis of the rotating cavity, it is always positioned close to the small port and can extend to a large extent. Especially when multiple separation cones are arranged consecutively, the offset baffle can form a larger windward surface, which can block more dust flying out along the tangent of the edge of the small port.

[0020] The third arrangement involves a geometric plane containing the windward surface that passes through the small port and intersects the central axis of the rotating cavity at a single point. In this arrangement, the windward surface is relatively close to the small port, and the central axis of the rotating cavity forms a certain angle with the windward surface. This also increases the surface area of ​​the windward surface that blocks dust. In addition, dust can slide along the inclined windward surface to the designated collection space, which helps to improve the air-dust separation effect.

[0021] To fully utilize the air-dust separation characteristics of the cyclone separation structure, this invention includes a cyclone separator employing the cyclone separation structure, comprising a cylindrical shell, multiple rotating chambers arranged annularly inside the cylindrical shell, a portion of the cylindrical shell forming a partial separation cone of the rotating chamber, and the multiple separation cones surrounding to form a central channel. The inlet of each separation cone faces outward from the cylindrical shell. A blocking device is also included, which blocks the upper port of each separation cone, allowing the airflow in the rotating chamber to flow downward from the small port of the separation cone into the central channel. The cylindrical shell has an annular sidewall, which serves both to connect the multiple separation cones and, in part, to act as the sidewall of the separation cone, reducing the volume of the cyclone separator. Furthermore, the cyclone separator is provided with a tangential air inlet channel communicating with the outer side of the cylindrical shell. The large-end cavity of each separation cone is connected to the tangential air inlet channel via the inlet, and the tangential air inlet channel provides tangential airflow to the rotating chamber. The cylindrical shell separates the tangential air intake channel and the small port of each of the separating cones on the outer and inner sides, respectively, and the upper port is blocked by the sealing device. The air-dust separation process is easy to understand: air outside the cylindrical shell enters the rotating chamber through the tangential air intake channel, and the rotating airflow accelerated by the rotating chamber exits from the small port. The baffle separates and removes most of the dust particles in the airflow, while clean air is discharged upwards through the central channel. The cyclone separator, on the one hand, increases the cross-sectional area of ​​the air passage within a limited space by increasing the number of separating cones; on the other hand, it scientifically divides the airflow direction and the direction of dust separation and falling, which neither increases the resistance of the airflow nor hinders the improvement of dust collection efficiency.

[0022] To further optimize the air-dust separation duct, a further technical solution involves placing a baffle between two adjacent separation cones, with a gap between the two adjacent baffles to allow airflow. This arrangement of the baffle serves two purposes: firstly, it connects the two adjacent separation cones, thereby strengthening the structural strength of the cyclone separator; secondly, it prevents the baffle from obstructing the connection between the small port and the central channel, allowing clean air to flow to the central channel via a shorter path, thus reducing duct resistance and minimizing the remixing of clean air with dust.

[0023] To further enhance the dust-blocking effect of the baffle, a further technical solution involves extending a small port edge of the separation cone from the lower end of the cylindrical shell, with the baffle spaced apart from the cylindrical shell. This spatial distance between the baffle and the cylindrical shell allows dust particles to travel a certain distance after leaving the small port edge before impacting the windward side of the baffle, thus achieving air-dust separation.

[0024] To achieve more efficient air-dust separation, the cyclone separator can be applied to a cyclone separation device. This device includes a dust cup and a lid. The dust cup has an opening at its upper part, and the lid is detachably fitted onto the opening. An air inlet is located on the side wall of the dust cup, and an air outlet is located on the lid. The device also includes a cyclone separator housed within the dust cup. The lid also covers the upper end of the separation cone of the cyclone separator, acting as a sealant to block the large port of the separation cone. The air inlet connects to the inlet of the separation cone, and the central channel of the cyclone separator connects to the air outlet. Air entering through the air inlet can enter the rotating chamber through the inlet, and air exiting through the central channel can exit the dust cup through the air outlet. In this way, the dust separated by the cyclone separator is stored in the dust cup, while clean air is discharged from the air outlet.

[0025] To achieve a gradual separation of dust particles, from coarse to fine, a further technical solution includes an intermediate barrel within the dust cup. The upper part of the intermediate barrel is open, and at least a portion of the cyclone separator is disposed within it. The cylindrical shell of the cyclone separator is connected to the intermediate barrel to form an intermediate channel. A porous filter is provided on the wall of the intermediate barrel. Air entering from the dust cup inlet passes sequentially through the porous filter, the intermediate channel, and the tangential inlet before entering the rotating chamber. By using the porous filter, large dust particles or filaments are separated from the airflow before it enters the cyclone separator, effectively reducing the occurrence of clogging in the cyclone separator.

[0026] To facilitate cleaning the dust inside the dust cup, a further technical solution includes a bottom cover that is rotatably hinged to the bottom of the dust cup. The lower end of the intermediate barrel is open. When the bottom cover is closed to the bottom of the dust cup, the open lower end of the intermediate barrel rests against the bottom cover.

[0027] Because of the above-mentioned features and advantages, this invention can be applied to cyclone separation structures, cyclone separators, cyclone separation devices, and vacuum cleaners. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a cyclone separation structure in the prior art;

[0029] Figure 2 This is a schematic diagram of the axial side structure of a vacuum cleaner applying the technical solution of this invention;

[0030] Figure 3 This is a schematic diagram of the axial side structure of the cyclone separator;

[0031] Figure 4This is a schematic diagram of the exploded structure of the cyclone separator;

[0032] Figure 5 This is a schematic diagram of the cross-sectional structure of the cyclone separator;

[0033] Figure 6 This is a schematic diagram of the cyclone separator's axial side structure;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of the cyclone separator viewed from the front.

[0035] Figure 8 This is a schematic diagram of the cyclone separator from a bottom-view perspective;

[0036] Figure 9 This is a schematic diagram of the cyclone separation structure in the axial direction of the present invention;

[0037] Figure 10 This is a schematic diagram of the cyclone separation structure in the front view direction according to the present invention;

[0038] Figure 11 This is the first arrangement of the baffle;

[0039] Figure 12 This is the second arrangement of the baffle;

[0040] Figure 13 This is the third arrangement of the baffle;

[0041] Figure 14 This is a frontal cross-sectional view of the cyclone separator, showing another arrangement of the cyclone separator. Detailed Implementation

[0042] The cyclone separation structure, cyclone separator, cyclone separation device, and vacuum cleaner applying the technical solution of the present invention will be further described below with reference to the accompanying drawings. Except where explicitly stated that they are equivalent or alternative embodiments, the various implementation details disclosed below may be selectively applied or combined in a single embodiment even if they are not directly related or synergistic in function.

[0043] like Figure 2The image shows a vacuum cleaner, which includes a cyclone separator 1, a suction head 2, and a motor assembly 3. The suction head 2 is located upstream of the cyclone separator 1 and has a suction port and an air outlet. The air outlet of the suction head 2 is connected to the air inlet of the cyclone separator 1 via a connecting pipe 21. The motor assembly 3 is located behind the cyclone separator 1, and its suction port is connected to the exhaust port of the cyclone separator 1. The motor assembly 3 draws air to create a negative pressure at the suction port of the suction head 2, thereby sucking up dust from the surface of objects.

[0044] To reduce the resistance of the cyclone separator 1 duct and improve the gas-dust separation efficiency, such as Figures 2 to 5 As shown, this invention proposes a cyclone separator 1, which includes a dust cup 4 and a lid 5. The dust cup 4 has a side wall 41 and a bottom cover 44 rotatably hinged to the bottom of the dust cup 4. The side wall 41 and the bottom cover 44 define a cup cavity 40 of the dust cup. The upper part of the dust cup 4 has an opening, and the dust cup 4 has a cup air inlet 42. To guide external air tangentially into the cup cavity 40, a cup tangential channel 43 is also provided on the side wall 41. The cup tangential channel 43 connects to the cup cavity 40 through the cup air inlet 42, so that external air can enter the cup cavity 40 tangentially along the cup tangential channel 43. The lid 5 is detachably closed to the opening, and the lid 5 has a lid air outlet 50. The air in the cup cavity 40, after being filtered, can be discharged outward from the lid air outlet 50. In this embodiment, the airflow entering the cup cavity 40 tangentially is generally mixed with a large amount of dust. The airflow flows along the cup side wall 41 to form a rotating airflow. The heavier dust will slide down the cup side wall 41 to the bottom of the dust cup 4.

[0045] The general process of air-dust separation involves separating dust particles from coarse to fine. For this purpose, an intermediate barrel 6 is provided in the dust cup 4. The intermediate barrel 6 is funnel-shaped, with its upper diameter larger than its lower diameter, and both its upper and lower parts are open. The upper opening of the intermediate barrel 6 is connected to the cup lid 5. When the bottom lid 44 is closed to the bottom of the dust cup 4, the lower opening of the intermediate barrel 6 rests against the bottom lid 44, and the cup sidewall 41 and the intermediate barrel 6 form an outer dust collection chamber. Furthermore, a porous filter screen 61 is provided on the wall of the intermediate barrel 6. Thus, air entering from the cup inlet 42, after initial rotational separation, can pass through the porous filter screen 61 into the internal space of the intermediate barrel 6, while dust particles with a diameter larger than the mesh size of the porous filter screen 61 are intercepted in the outer dust collection chamber.

[0046] After filtration by the porous filter 61, large dust particles in the airflow have been intercepted. To further separate small dust particles in the airflow, the cyclone separator 1 also includes a cyclone separator 7 disposed in the dust cup 4, with at least a portion of the cyclone separator 7 arranged in the intermediate barrel 6. The cyclone separator 7 utilizes the centrifugal force generated when the airflow rotates to separate dust particles in the airflow. Figures 4 to 7 As shown, the cyclone separator 7 includes a cylindrical shell 71 and a plurality of annularly arranged separation cones 8. Each separation cone 8 has a rotating cavity 80, and the plurality of rotating cavities 80 are arranged inside the cylindrical shell 71. The cylindrical shell 71 also connects to the plurality of separation cones 8, with a portion of the cylindrical shell 71 forming a portion of the rotating cavity 80 of the separation cone 8. The plurality of separation cones 8 surround to form a central channel 81. Each separation cone 8 includes a rotating cavity 80 with a truncated cone shape. The upper end of the separation cone 8 is the larger cone end and is provided with a cutting inlet 82 for allowing external air to enter. Correspondingly, the lower end of the separation cone 8 is the smaller cone end, and the smaller cone end of the separation cone 8 is provided with a small port 83. Of course, to facilitate the arrangement of the cutting inlet 82, a section of straight cylindrical wall can also be provided at the upper end of the separation cone 8, and the cutting inlet 82 is arranged on the straight cylindrical wall. The inlet 82 of each of the separating cones 8 faces the outside of the cylindrical housing 71, and the small port 83 connects to the central channel 81. Figure 4 As shown, the cup lid 5 also covers the separation cone 8 of the cyclone separator 7, thereby acting as a sealer to block the large port of the separation cone 8, and the central channel 81 of the cyclone separator 7 is connected to the air outlet 50 of the lid.

[0047] In order to allow the airflow to form a rotating airflow within the rotating cavity 80, such as Figure 4 , Figure 9 and Figure 10As shown, the cyclone separator 7 is also provided with an outer tangential air inlet channel 72 that connects to the cylindrical shell 71. The large end cavity of the separation cone 8 is connected to the tangential air inlet channel 72 through the inlet 82. The tangential air inlet channel 72 is used to provide tangential airflow to the rotating cavity 80. When the airflow enters the rotating cavity 80, it flows along the side wall of the separation cone 8 and forms a rotating airflow. The airflow accelerates and rotates from the large end to the small end of the separation cone 8. This causes the air and dust at the lower end of the rotating cavity 80 to form a preliminary separation. That is, the dust is mainly distributed on the periphery of the rotating cavity 80 under the action of centrifugal force and slides downward along the inner surface of the wall of the separation cone 8, while the clean air is distributed in the middle range of the rotating cavity 80. The accelerating airflow eventually exits the rotating cavity 80 through the small port 83. However, the dust exiting through the small port 83 moves towards the outer and lower side of the small port 83 under centrifugal force, while the clean air exiting through the small port 83 flows towards the area with relatively lower air pressure. In this embodiment, such as... Figure 5 As shown, clean air flows upward along the central channel 81.

[0048] To further separate and collect the dust flying outwards, a baffle 9 is further provided at the lower part of the separation cone 8. Viewed from the central axis of the rotating cavity 80, the baffle 9 is located outside the small port 83 of the separation cone 8. The baffle 9 has a windward surface 91 that can meet the rotating wind, and the windward surface 91 of the baffle 9 extends downwards beyond the small port 83 of the separation cone 8. The baffle 9 is a component used to block dust, and its arrangement below and outside the small port 83 is precisely along the path of dust movement. The windward surface 91 of the baffle 9 is part of its outer surface, used to change the direction of dust movement. In this embodiment, the thin-plate-shaped baffle 9 is placed below and outside the small port 83, and the surface of the baffle 9 facing the dust is the windward surface 91. Of course, this is also related to the rotation direction of the airflow within the rotating cavity 80; if the rotation direction of the airflow changes, the corresponding windward surface 91 also changes accordingly. In this way, the separation cone 8 and the baffle 9 are combined to form a cyclone separation structure. After the dust flies out and hits the baffle 9, it can slide down along the windward surface 91.

[0049] Furthermore, at least one baffle 9 is provided on one of the separating cones 8, and the baffles 9 are spaced apart on the outer side of the small port 83 of the separating cone 8. Figures 6 to 8As shown, a baffle 9 is arranged on each side of the same separation cone 8, and the cantilevered baffle 9 is connected to the side wall of the separation cone 8. In this embodiment, multiple separation cones 8 are arranged in a ring, and a baffle 9 is set between two adjacent separation cones 8. The baffles 9 arranged in this way serve two purposes: firstly, to connect two adjacent separation cones 8, thereby strengthening the structural strength of the cyclone separator 7; secondly, for a single separation cone 8, the baffles 9 on both sides can play a role in dust blocking, and for multiple separation cones, the two sides of each baffle 9 are the windward surfaces 91; furthermore, a gap is reserved between two adjacent baffles 9 to allow airflow to pass through, in order to reduce the obstruction formed by the baffles 9 between the small port 83 and the central channel 81, allowing clean air to flow to the central channel 81 with a shorter path, which reduces the resistance of the air duct and also reduces the remixing of clean air with dust.

[0050] The arrangement of the baffle 9 is flexible and varied. Taking the baffle 9 as a thin flat plate and the windward surface 91 as a plane as an example, the following describes the arrangement of the baffle through several specific implementation methods:

[0051] The first type, such as Figure 11 As shown, the central axis of the rotating cavity 80 falls on the geometric plane where the windward surface 91 is located. That is, when viewed from the direction of the central axis of the rotating cavity 80, the windward surface 91 extends outward along the diameter direction of the rotating cavity 80. The baffle 9 arranged in this way can effectively block dust flying out along the edge of the small port 83, whether its front or back is the windward surface 91.

[0052] The second type, such as Figure 12 As shown, the central axis of the rotating cavity 80 is arranged parallel to the windward surface 91 of the baffle 9, and the minimum distance between the geometric plane containing the windward surface 91 and the central axis of the rotating cavity 80 is less than the radius of the small port 83. Although the windward surface 91 is offset from the central axis of the rotating cavity 80, it is still positioned relatively close to the side of the small port 83 and can effectively block dust flying out along the edge of the small port 83.

[0053] The third type, such as Figure 13As shown, the geometric plane containing the windward surface 91 passes through the small port 83 and intersects the central axis of the rotating cavity 80 at a point. In this arrangement, the windward surface 91 is relatively close to the small port 83, and the central axis of the rotating cavity 80 forms a certain angle with the windward surface 91. This can increase the surface area of ​​the windward surface 91 to a certain extent, thus blocking more dust. In addition, dust can slide along the inclined windward surface 91 to the designated collection space, which is beneficial to improving the air-dust separation effect.

[0054] Of course, the above is just an example of the windward surface 91 being a plane. In actual applications, the windward surface 91 can also be set to have a certain curved shape according to the actual application environment.

[0055] To better collect dust, a further technical solution involves extending the lower end of the cylindrical shell 71 along the small port 83 of the separating cone 8. The lower edge of the cylindrical shell 71 connects to the upper wall of the intermediate barrel 6, thus forming an intermediate dust collection chamber with the lower wall of the intermediate barrel 6, and an intermediate channel with the upper wall of the intermediate barrel 6. To ensure effective air-dust separation, the baffles 9 are spaced apart from the cylindrical shell.

[0056] To further improve the cleanliness of the air discharged from the cyclone separator 1, a further technical solution includes a high-density filter 51 disposed on the cup lid 5. The air discharged from the lid air outlet 50 is filtered by the high-density filter 51 and then flows to the air extraction port of the motor assembly 3.

[0057] In summary, the air-dust separation process is as follows: Air carrying dust enters from the suction port of the suction head 2 and flows along the connecting pipe 21 to the cup tangential channel 43 of the cyclone separator 1. Air then enters the cup cavity 40 from the cup inlet 42. After passing through the porous filter 61 on the intermediate barrel 6, dust particles with a diameter larger than the mesh size of the porous filter 61 are intercepted in the outer dust collection chamber. The air passing through the porous filter 61 flows along the intermediate channel to the tangential air inlet channel 72. After entering the rotating chamber 80 through the inlet 82, the air accelerates and rotates. The rotating airflow exits from the small port 83 and, with the help of the baffle, separates most of the dust particles in the airflow, causing the dust to fall into the intermediate dust collection chamber. Further, the air flows upward through the central channel 81 and the cover outlet 50, and is further filtered by the high-density filter 51. Finally, the clean air is extracted to the external space through the motor assembly. This arrangement of the air-dust separation structure scientifically divides the air path and classifies and concentrates dust, which is beneficial to both air-dust separation efficiency and extending filter life. On the other hand, the cyclone separator 7 further optimizes the air-dust separation structure, effectively reducing airway resistance and improving air-dust separation efficiency.

[0058] In the above embodiment, the vertical direction defined by the separating cone 8 is merely an illustrative representation for ease of understanding. In practical applications, the separating cone 8 can also be inverted. Figure 14 The diagram shows another arrangement of the cyclone separator 7. An intermediate barrel 6 is provided within the dust cup 4, and the cyclone separation structure is disposed within the intermediate barrel 6. The cyclone separation structure includes an inverted separation cone 8 and a baffle 9. The lower end of the separation cone 8 is a large end with an inlet 82, and the upper end is a small end with a small outlet 83. The baffle 9 is disposed outside the small outlet 83 on the upper part of the separation cone 8, and the windward surface 91 of the baffle 9 extends upward beyond the small outlet 83 of the separation cone 8. When the rotating airflow is discharged from the small outlet 83, dust moves upward and outward from the small outlet 83, collides with the baffle 9, and slides downward to separate, while clean air flows upward and is discharged upward through the cover outlet 50.

Claims

1. A cyclone separator structure, comprising a separator cone having a truncated conical rotating cavity, wherein the upper end of the separator cone is a large cone end and is provided with a cutting inlet, the cutting inlet being used to allow external air to enter; characterized in that, It also includes a blocker that blocks the upper port of the separation cone, allowing the airflow in the rotating chamber to flow downwards from the small port of the separation cone. A baffle is provided at the lower part of the separation cone, and viewed from the central axis of the rotating chamber, the baffle is located outside the small port at the lower end of the separation cone. The baffle has a windward surface that can meet the rotating wind, and the windward surface of the baffle extends downwards from the edge of the small port of the separation cone.

2. The cyclone separation structure according to claim 1, characterized in that, It includes at least one of the baffles, the central axis of the rotating cavity is arranged parallel to the windward surface of the baffle, and the minimum distance between the geometric plane containing the windward surface and the central axis of the rotating cavity is less than the radius of the small port.

3. The cyclone separation structure according to claim 1, characterized in that, It includes at least one of the baffles, and the geometric plane containing the windward surface passes through the small port and intersects the central axis of the rotating cavity at a point.

4. A cyclone separator using the cyclone separation structure according to any one of claims 1 to 3, characterized in that, The device includes a cylindrical shell, and a plurality of rotating cavities are arranged in a ring inside the cylindrical shell. A portion of the cylindrical shell forms a partial separation cone of the rotating cavity. The plurality of separation cones surround to form a central channel. The inlet of each separation cone faces the outside of the cylindrical shell. The airflow in the rotating cavity flows downward from the small port of the separation cone into the central channel.

5. The cyclone separator according to claim 4, characterized in that, A baffle is provided between two adjacent separation cones, and a gap is reserved between two adjacent baffles to allow airflow to pass through.

6. The cyclone separator according to claim 5, characterized in that, The cyclone separator is also provided with an outer tangential air intake channel that connects to the cylindrical shell. The large end cavity of the separation cone is connected to the tangential air intake channel through the inlet. The tangential air intake channel is used to provide tangential airflow to the rotating cavity.

7. The cyclone separator according to claim 6, characterized in that, The lower end of the cylindrical shell extends out from the small port edge of the separating cone, and the baffle is arranged at intervals with the cylindrical shell.

8. A cyclone separator, comprising a dust cup and a lid, wherein the dust cup has an opening at its upper part, the lid is detachably fitted onto the opening, an air inlet is provided on the side wall of the dust cup, and an air outlet is provided on the lid, characterized in that, It also includes a cyclone separator as described in any one of claims 4 to 7 disposed in the dust cup, wherein the cup cover also covers the upper end of the separation cone of the cyclone separator, thereby acting as a plug to block the large port of the separation cone, the cup inlet is connected to the inlet of the separation cone, the central channel of the cyclone separator is connected to the outlet of the cover, air entering from the cup inlet can enter the rotating chamber through the inlet, and air exiting from the central channel can be discharged to the outside of the dust cup through the outlet of the cover.

9. The cyclone separator according to claim 8, characterized in that, It also includes an intermediate barrel disposed in the dust cup, the upper part of the intermediate barrel being open, at least part of the cyclone separator being disposed in the intermediate barrel, the cylindrical shell of the cyclone separator being connected to the intermediate barrel to form an intermediate channel, and a porous filter screen being disposed on the wall of the intermediate barrel, and air entering from the air inlet of the cup sequentially passing through the porous filter screen, the intermediate channel and the tangential air inlet into the rotating chamber.

10. A vacuum cleaner, characterized in that, Includes the cyclone separator as described in claim 8 or 9.

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