Dust collector

Abstract

The application relates to a dust collector. The dust collector comprises a main machine device and a cyclone separation device, the cyclone separation device comprises a shell and a cyclone separation assembly, a first dust chamber is formed between the cyclone separation assembly and the inner side wall of the shell, the cyclone separation assembly comprises a first cyclone unit and a second cyclone unit, and the second cyclone unit is internally provided with a second dust chamber; the second cyclone unit comprises a base and an annular air baffle connected with the base, the annular air baffle comprises a top plate, blades and airflow guide pieces arranged on the outer periphery of the blades, the top plate is connected with the first cyclone unit, the blades are multiple, the multiple blades are annularly connected with the top plate, filter openings are formed between adjacent blades, the second dust chamber is arranged in the base, and the first dust chamber is communicated with the second dust chamber through the filter openings of the annular air baffle; when air flow spirally flows in the first dust chamber, at least part of the air flow enters the second dust chamber through the filter openings, and at least part of the air flow moves towards the bottom of the first dust chamber under the obstruction of the airflow guide pieces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust suction devices, and in particular to a dust suction device. BACKGROUND

[0002] Dust suction devices can be generally classified into canister type and upright type. In the canister type, a main body and a suction nozzle are separated by a predetermined pipe and connected to each other. In the upright type, the main body and the suction nozzle are formed as one body according to the type thereof.

[0003] The dust suction device includes a driving unit generating suction force, a suction unit sucking air on a surface to be cleaned using the suction force of the driving unit, and a cyclone separating device separating and collecting dust from the air sucked by the suction unit and discharging clean air. The cyclone separating device is a device separating dust in the sucked air using centrifugal force.

[0004] However, the conventional dust suction device has a complicated structure and a poor dust separation effect. SUMMARY

[0005] Therefore, it is necessary to provide a dust suction device to solve the above technical problems.

[0006] A dust suction device includes:

[0007] a main device for providing suction power; and

[0008] a cyclone separating device connected to the main device, the cyclone separating device including a housing and a cyclone separating assembly disposed in the housing, the cyclone separating assembly including a second cyclone unit including a ring-shaped air baffle and a filter screen disposed at an outer periphery of the ring-shaped air baffle, the ring-shaped air baffle including a plurality of vanes and an air flow guide disposed at an outer periphery of the vanes, the vanes having a filter opening formed between adjacent vanes.

[0009] In one embodiment, an end of the air flow guide and an end of the vane abut an inner wall of the filter screen.

[0010] In one embodiment, a first dust chamber is formed between the cyclone separating assembly and an inner wall of the housing, the cyclone separating assembly further including a base connected to the ring-shaped air baffle and a second air duct flange connected to the base and extending into the first dust chamber.

[0011] In one embodiment, a distance L1 between the air flow guide and the end of the vane is 5-6 mm, a length L2 of the vane is 15-16 mm, a gap L3 between adjacent vanes is 2-3 mm, and a distance L4 between the end of the air flow guide and the vane is 2-3 mm.

[0012] In one of the embodiments, the cyclone separation assembly is provided with a second air outlet for communicating with the first dust chamber along the axial direction of the housing, and the annular baffle is located between the second air outlet and the second air duct flange.

[0013] The second air duct flange comprises a first blocking portion and a second blocking portion arranged at the outer periphery of the first blocking portion, and a blocking cavity is formed between the first blocking portion and the base.

[0014] In one of the embodiments, the cyclone separation assembly comprises a first cyclone unit connected to the second cyclone unit, and the second cyclone unit is formed with a second dust chamber, and the first cyclone unit is used to form a first cyclone in the first dust chamber, and the first cyclone forms a second cyclone in the second dust chamber after passing through the annular baffle.

[0015] In one of the embodiments, the second cyclone unit is formed with a first air inlet duct, and the first cyclone unit is provided with a second air inlet duct communicating with the first air inlet duct, and the second air inlet duct comprises a straight air duct and a spiral air duct communicating with the straight air duct, and the straight air duct communicates with the first air inlet duct.

[0016] In one of the embodiments, the straight air duct has a second air inlet communicating with the first air inlet duct, and the spiral air duct has a second air outlet communicating with the first dust chamber, and the second air outlet faces the inner side wall of the housing.

[0017] In one of the embodiments, the second cyclone unit is provided with a first air inlet duct, and the first cyclone unit is provided with a second air inlet duct communicating with the first air inlet duct, and the second air inlet duct communicates with the first dust chamber, and the first dust chamber communicates with the second dust chamber, and the first cyclone unit is further provided with an air outlet duct communicating with the second dust chamber.

[0018] In one of the embodiments, a filter element is arranged in the air outlet duct of the cyclone separation device, and the air passing through the air outlet duct enters the main machine device after passing through the filter element.

[0019] The dust collector comprises a main machine device and a cyclone separating device. The cyclone separating assembly is arranged in the housing and forms a first dust chamber between the inner side wall of the housing. The cyclone separating assembly comprises a first cyclone unit and a second cyclone unit, and the second cyclone unit is arranged with a second dust chamber. The first cyclone unit is used to form a first cyclone in the first dust chamber, and the second cyclone unit is used to form a second cyclone in the second dust chamber. Since the cyclone separating assembly forms the first dust chamber between the inner side wall of the housing, and the second cyclone unit in the cyclone separating assembly is arranged with the second dust chamber, the maximum diameter of the first dust chamber is greater than that of the second dust chamber, and thus the wind speed of the first cyclone in the first dust chamber is less than that of the second cyclone in the second dust chamber. Therefore, the second cyclone in the second dust chamber can separate particles with lighter mass. By separating different particles mixed in the airflow according to the mass through the first cyclone in the first dust chamber and the second cyclone in the second dust chamber, a better separation effect of dust particles can be achieved. When the airflow spirally flows in the first dust chamber, at least a part of the airflow moves towards the bottom of the first dust chamber under the obstruction of the airflow guide piece, so that the dust particles in the airflow are concentrated at the bottom of the first dust chamber, thereby making the dust particles more easily separated from the airflow and improving the separation effect of dust. Further, since the dust particles are concentrated at the bottom of the first dust chamber instead of staying near the annular baffle, the dust particles are prevented from passing through the filter port, thereby improving the separation effect of dust. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structural schematic diagram of a dust collector in an embodiment of the present application is shown;

[0021] Figure 2 A dust collector in Figure 1 comprises a cyclone separating device, an axial sectional view of which is shown;

[0022] Figure 3 A first cyclone unit in Figure 2 is shown in a top view;

[0023] Figure 4 An exploded schematic diagram of part of the structure of a cyclone separating device in an embodiment of the present application is shown;

[0024] Figure 5 Another exploded schematic diagram of part of the structure of a cyclone separating device in an embodiment of the present application is shown;

[0025] Figure 6 A cross-sectional view of an annular baffle in Figure 4 in a plane perpendicular to the central axis is shown;

[0026] Figure 6A A force analysis diagram of a dust particle is shown;

[0027] Figure 6BPartial cross-sectional views of two types of annular slats are shown;

[0028] Figure 6C and Figure 6D The diagram shows the structure of the filter screen and the annular grating in the two embodiments;

[0029] Figure 7 This is a schematic diagram of the structure of a vacuum cleaner in one embodiment of the present application when the power suction port of the main unit is separated from the exhaust end of the cyclone separator.

[0030] Figure 8 This is a partial schematic diagram of the locking device of a vacuum cleaner cooperating with surrounding components in one embodiment of this application;

[0031] Figure 9 for Figure 8 A schematic diagram of the locking device in the middle;

[0032] Figure 10 A schematic diagram illustrating the self-locking mechanism between the latch and the locking element;

[0033] Figure 11 This is a schematic diagram of the structure of the suction unit of the cyclone separator in one embodiment of this application when it is open relative to the housing;

[0034] Figure 12 for Figure 11 Another structural schematic diagram of the cyclone separator in the image;

[0035] Figure 13 This is a structural schematic diagram of a vacuum cleaner from another perspective in one embodiment of this application;

[0036] Figure 14 This is a schematic diagram of the housing of the host device in another embodiment;

[0037] Figure 15 To and Figure 14 A schematic diagram of the suction port unit that fits with the housing shown;

[0038] Figure 16 This is a partial structural diagram of a vacuum cleaner in one embodiment;

[0039] Figure 17 for Figure 16 A schematic diagram of the suction port unit perpendicular to the axial direction.

[0040] 100, cyclone separation device; 110, first cyclone unit; 120, second cyclone unit; 121, base; 122, annular cyclone baffle; 122A, filter port; 122A1, filter port; 122A2, filter port; 122B, top plate; 122C, vane; 122D, airflow guide; 122F, stop groove; 122G, flow guide; 123, filter screen; 130, housing; 130A, inner side wall; 131A, air suction end; 131B, air discharge end; 131C, first wire slot; 131D, second wire slot; 131E, first wire guide; 131F, second wire guide; 131G, locking member; 132, suction port unit; 132A, first electrical element; 132B, end cap; 132C, suction nozzle; 132C1, channel; 132C2, sliding slot; 133, rotating shaft; 133A, first wire passage; 141, first air duct flange; 142, second air duct flange; 142A, first blocking portion; 142B, second blocking portion; 143C, blocking cavity; 151, first dust chamber; 152, second dust chamber; 161, first air inlet duct; 161A, first air inlet; 161B, first air outlet; 162, second air inlet duct; 162A, second air inlet; 162B, second air outlet; 162C, straight air duct; 162D, spiral air duct; 163, air outlet duct; 170, filter element; 180, locking unit; 190, elastic unlocking member; 200, main device; 201, second wire passage; 202, connecting rotating shaft; 210, handle; 220, battery unit; 230, motor unit; 231, power suction port; 240, magnetic reed switch; 241, magnetic member; 300, locking device; 310, lock catch; 310A, rotating shaft portion; 311, hook end; 312, driving end; 320, unlocking unit; 321, connecting rod; 321A, first rod end; 321B, second rod end; 322, button; 323, second elastic member; 330, first elastic member; 41, airflow; 42, airflow; 43, airflow; X, first electrical connection member; Y, second electrical connection member; L1, L2, L3, airflow; G1, G2, dust particles; 400, locking structure; 410, first locking assembly; 420, second locking assembly; 421, locking pin; 4211, driving portion; 4212, locking portion; 422, elastic return member. DETAILED DESCRIPTION

[0041] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein, and it is understood that similar modifications of the present application can be constructed by those skilled in the art without departing from the scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0042] Figure 1 A structural schematic diagram of a vacuum cleaner in one embodiment of the present application is shown. The vacuum cleaner comprises a main machine device 200 and a cyclone separating device 100.

[0043] The main machine device 200 comprises a handle 210, one end of the handle 210 is connected with a battery unit 220, and the other end of the handle 210 is connected with a motor unit 230. The battery unit 220 is used to provide power, and the motor unit 230 rotates after being powered on, thereby generating suction power.

[0044] The cyclone separating device 100 is connected with the main machine device 200. As shown in Figure 2 , Figure 2 A cross-sectional view of the cyclone separating device 100 contained in the vacuum cleaner in Figure 1 is shown. The cyclone separating device 100 comprises a housing 130 and a cyclone separating assembly arranged in the housing 130.

[0045] The cyclone separating assembly has two dust chambers, i.e. a first dust chamber 151 and a second dust chamber 152. The main machine device 200 provides suction power to form an air flow. Along the direction of the air flow, the first dust chamber 151 is arranged upstream, and the second dust chamber 152 is arranged downstream. The first dust chamber 151 generates a first cyclone, and the second dust chamber 152 generates a second cyclone. The air flow carrying dust first completes the separation of large-particle dust in the first dust chamber 151, and then completes the separation of small-particle dust in the second dust chamber 152, and then the cleaned air flow enters the main machine device 200.

[0046] Specifically, as shown in Figure 2 , the cyclone separating assembly is arranged in the housing 130, and the cyclone separating assembly and the inner side wall 130A of the housing 130 form the first dust chamber 151. The cyclone separating assembly comprises a first cyclone unit 110 and a second cyclone unit 120, and the second cyclone unit 120 is connected with the first cyclone unit 110. The second cyclone unit 120 is arranged with the second dust chamber 152. The first cyclone unit 110 is used to form a first cyclone in the first dust chamber 151, and the second cyclone unit 120 is used to form a second cyclone in the second dust chamber 152.

[0047] As shown in Figure 2 , the second cyclone unit 120 is formed with a first air inlet channel 161, and the first cyclone unit 110 is formed with a second air inlet channel 162. The first air inlet channel 161 communicates with the second air inlet channel 162, the second air inlet channel 162 communicates with the first dust chamber 151, and the second dust chamber 152 communicates with the first dust chamber 151. The first cyclone unit 110 is formed with an air outlet channel 163. The air outlet channel 163 communicates with the second dust chamber 152.

[0048] Specifically, the first air inlet 161 has a first air inlet 161 A and a first air outlet 161 B. The second air inlet 162 has a second air inlet 162A and a second air outlet 162B. The first air outlet 161 B communicates with the second air inlet 162A. The second air outlet 162B communicates with the first dust chamber 151.

[0049] The flow path of the air flow is from the first air inlet 161 A into the first air inlet 161, from the first air outlet 161 B of the first air inlet 161 into the second air inlet 162A, from the second air outlet 162B of the second air inlet 162 into the first dust chamber 151. The first cyclone is formed in the first dust chamber 151. The first cyclone enters the second dust chamber 152 and is converted into the second cyclone in the second dust chamber 152. The second cyclone enters the main machine device 200 from the air outlet 163.

[0050] Further, the second air inlet 162 includes a straight air inlet 162C and a spiral air inlet 162D. The straight air inlet 162C is connected to the spiral air inlet 162D. More specifically, the straight air inlet 162C has the second air inlet 162A, and the spiral air inlet 162D has the second air outlet 162B. The second air inlet 162A of the straight air inlet 162C is connected to the first air outlet 161 B of the first air inlet 161. The second air outlet 162B of the spiral air inlet 162D is connected to the first dust chamber 151. The end of the straight air inlet 162C away from the second air inlet 162A is connected to the end of the spiral air inlet 162D away from the second air outlet 162B.

[0051] As shown in FIG. 1 1, Figure 3 As shown in FIG. 1 1, Figure 3 As shown in FIG. 1 1, Figure 2 As shown in FIG. 1 1, Figure 3 As shown in FIG. 1 1, the straight air inlet 162C, the spiral air inlet 162D and the second air outlet 162B can be seen. The straight air inlet 162C is located approximately in the middle of the first cyclone unit 1 10 and extends along the central axis direction of the first cyclone unit 1 10. The first air inlet 161 and the straight air inlet 162C are arranged in the middle of the housing 130. The second air outlet 162B is located approximately at the outer periphery of the first cyclone unit 1 10. The spiral air inlet 162D spirally extends from the middle of the first cyclone unit 1 10 to the outer periphery of the first cyclone unit 1 10, and the outer shape of the spiral air inlet 162D is similar to the shape of a volute. Figure 3 The dashed line in FIG. 1 1 also shows the trajectory of the air flow. When the air flow is discharged from the second air outlet 162B of the spiral air inlet 162D, it is approximately discharged along the tangent of the outer periphery of the first cyclone unit 1 10. Further, as shown in FIG. 1 1, Figure 2As shown, the second air outlet 162B of the spiral air duct 162D is substantially directed to the inner side wall 130A of the housing 130. It should be understood that when the entire inner side wall 130A of the housing 130 is substantially cylindrical, in a cross section perpendicular to the central axis of the cylindrical surface, the shape of the inner side wall 130A of the housing 130 is circular; the normal direction of the second air outlet 162B is not along the radial direction of the circular shape, but at an angle with the radial direction of the circular shape.

[0052] The above structure makes the air flow enter the cyclone separation device 100 from the axial passage in the middle of the cyclone separation device 100, and forms a first cyclone around the middle of the cyclone separation device 100, so that the structure of the cyclone separation device 100 is more compact. In addition, the spiral air duct 162D has a shape similar to a volute, so that the air flow forms a first cyclone in the first dust chamber 151, thereby pressing the dust and other particles carried in the air flow downward into the bottom of the first dust chamber 151 to complete the first filtration. It should be noted that the second air outlet 162B should not be too large, so as to ensure that the air flow discharged from the second air outlet 162B has a large centrifugal force, thereby improving the separation effect of dust.

[0053] Figure 4 An exploded schematic view of part of the structure of the cyclone separation device 100 of one embodiment of the application is shown. Figure 5 Another exploded schematic view of part of the structure of the cyclone separation device 100 of one embodiment of the application is shown. As shown in Figure 4 and Figure 5 As shown, the cyclone separation device 100 includes a first cyclone unit 110 and a second cyclone unit 120. The structure of the first cyclone unit 110 and the second cyclone unit 120 after assembly is shown in Figure 2 The second cyclone unit 120 includes a base 121, an annular air baffle 122, and a filter screen 123. The base 121 is connected to the lower end of the housing 130. The upper end of the base 121 is connected to the annular air baffle 122. The filter screen 123 is annular, and the filter screen 123 is sleeved on the outer periphery of the annular air baffle 122. The annular air baffle 122 has a plurality of filter openings 122A, which are all strip-shaped and arranged annularly on the outer periphery of the annular air baffle 122. The second dust chamber 152 is arranged in the base 121, and the first dust chamber 151 communicates with the second dust chamber 152 through the filter openings 122A of the annular air baffle 122. Specifically, the air flow in the first dust chamber 151 first passes through the filter screen 123, then passes through the filter openings 122A of the annular air baffle 122, and then enters the second dust chamber 152.

[0054] As shown, Figure 6 Figure 6 An exploded schematic view of part of the structure of the cyclone separation device 100 of one embodiment of the application is shown. Figure 4 ​The cross-sectional view of the annular baffle 122 in the first cyclone unit 110 in a plane perpendicular to the central axis. The outer part of the filter screen 123 is the first dust chamber 151, and the annular baffle 122 is arranged inside the filter screen 123. The annular baffle 122 can be attached to the inner wall of the filter screen 123 or have a certain gap with the inner wall of the filter screen 123. Figure 6 The direction of the air flow is also shown in the figure. The air flow is roughly spirally into the second dust chamber 152 from the first dust chamber 151 along the direction shown in the figure, and forms a second cyclone in the second dust chamber 152. The first dust chamber 151 and the second dust chamber 152 are coaxially arranged, and the straight air duct 162C is located at the central axis of the first dust chamber 151. Since the moving track of the air is in turn through the straight air duct 162C, the spiral air duct 162D, the first dust chamber 151 and the second dust chamber 152, the dust carried by the air entering the inside of the annular baffle 122 is collected in the second dust chamber 152 under the action of the spiral centrifugal force in the second dust chamber 152. As Figure 6 shown, the specific structure of the annular baffle 122 is further illustrated. In combination with Figure 5 and Figure 6 , the annular baffle 122 includes a circular top plate 122B and a plurality of strip-shaped blades 122C connected to the top plate 122B. The top plate 122B can be connected to the first cyclone unit 110 by a threaded part. These blades 122C are arranged in a ring shape, and the blades 122C are inclined relative to the radial direction of the annular baffle 122. The filter openings 122A are formed between adjacent blades 122C. The air flow guide 122D is arranged outside the blade 122C. The air flow guide 122D forms a stop groove 122F with the blade 122C. The stop groove 122F can be an acute angle, and the side complementary to the stop groove 122F forms a guide part 122G for guiding the air flow. That is, the air flow is guided by the guide part 122G so that the air flow does not enter the annular baffle 122 along the radial direction of the annular baffle 122, and then the air flow is guided by the blade 122C in the tangential direction. As Figure 6 shown, the air flow spirally flows in the first dust chamber 151, Figure 6The diagram shows the flow of three airflows. One airflow 41 can pass directly through the filter port 122A. Another airflow 42 can be blocked by the airflow guide 122D on the blade 122C and enters the filter port 122A after bypassing the airflow guide 122D. A third airflow 43 flows around the outer periphery of the annular grating 122. Since the airflow carries dust particles, some smaller dust particles flow with the airflow through the filter port 122A, while larger dust particles are deposited at the bottom of the first dust chamber 151 under the spiral force of the cyclone. Specifically, before contacting the blade 122C and the airflow guide 122D, the larger particles in the airflow are filtered by the filter screen 123. Under the spiral force, these larger particles sink to the bottom of the first dust chamber 151. Some smaller particles pass through the filter port 122A into the second cyclone unit 120 and form a second cyclone in the second dust chamber 152.

[0055] It should be noted that the mesh diameter of filter 123 can be about 1mm. Filter 123 filters larger particles in the airflow. Over time, larger particles may clog the mesh of filter 123, leading to the intake unit 132 ( Figure 7 The suction force is reduced (as shown). In this embodiment, the annular grating 122 is set to reduce the entry of larger dust particles into the filter screen 123, thereby preventing larger dust particles from clogging the filter screen. The working principle of the annular grating 122 will be explained below through the force analysis of larger dust particles.

[0056] like Figure 6A As shown, Figure 6A The diagram shows the force analysis of larger dust particles G1 and G2. It illustrates two types of filter openings 122A1 and 122A2 located on the annular grating 122. The annular grating 122 forming filter opening 122A1 does not have an airflow guide 122D, while the annular grating 122 forming filter opening 122A2 is... Figure 6 The annular grating 122 shown has an airflow guide 122D. Combined with... Figure 6 The airflow guide 122D is arranged approximately along the radial direction of the annular grating 122, where the radial direction is the radial direction of the outer contour of the annular grating 122.

[0057] The effects of the two filter types, 122A1 and 122A2, on dust particles are analyzed below.

[0058] Dust particles G1 and G2 tend to move in a ring along the direction of airflow 43.

[0059] For dust particles G1:

[0060] The dust particle G1 is subjected to centrifugal force Foff and suction force Fabs, the direction of the suction force Fabs is along the extension direction of the filter port 122A1. The centrifugal force Foff can offset part of the suction force Fabs, so the suction force Fabs can still attract the dust particle G1 towards the filter port 122A1.

[0061] For the dust particle G2:

[0062] The dust particle G2 is also subjected to centrifugal force Foff and suction force Fabs, the direction of the suction force Fabs is along the extension direction of the filter port 122A2. The centrifugal force Foff can offset all of the suction force Fabs, so the suction force Fabs cannot attract the dust particle G2 towards the filter port 122A2.

[0063] Therefore, the dust particle G2 at the filter port 122A2 is not easy to block the mesh of the filter screen 123. For the embodiment without the filter screen 123, the airflow guide 122D is arranged substantially along the radial direction of the ring-shaped baffle 122, so that the dust particle is not easy to enter the inside of the ring-shaped baffle 122. For some fine dust, even if it enters the ring-shaped baffle 122, it can form a spiral motion in the second dust chamber 152 and be collected in the second dust chamber 152 under the action of the spiral centrifugal force. As shown in Figure 6B , Figure 6B two partial cross-sectional views of the ring-shaped baffle 122 are shown, Figure 6B the upper part in Figure 6 the partial cross-sectional view of the ring-shaped baffle 122 shown in Figure 6B the lower part in Figure 6B the structure shown in the lower part is different from the structure shown in the upper part in Figure 6 the guide part 122G shown in the upper part in Figure 6 the guide part 122G shown in the lower part is the entire airflow guide 122D. Figure 6B The angle between the direction of the airflow guided by the guide part 122G in the upper part structure and the tangent direction of the ring-shaped baffle 122 is small, but Figure 6B The angle between the direction of the airflow guided by the guide part 122G in the lower part structure and the tangent direction of the ring-shaped baffle 122 is large. Therefore, Figure 6B The structure of the upper part can form a stronger cyclone in the second dust chamber 152.

[0064] As shown in Figure 6 the distance L1 between the airflow guide 122D and the end of the blade 122C on both sides of the guide part 122G can be 5mm-6mm, for example, it can be 5.5mm;

[0065] The length L2 of the blade 122C can be 15mm-16mm, for example, 15.5mm.

[0066] The width L3 of the filter port 122A formed between two adjacent blades 122C can be 2mm-3mm, for example, 2.5mm. When the value of L3 is small, the pressure drop caused by the annular wind screen 122 increases, resulting in loss of suction energy, and when the value of L3 is large, the tangential acceleration effect of the flow guide 122G on the airflow decreases, resulting in reduced cleaning performance. The value can be selected at an intermediate position in the range to balance the suction energy and cleaning power.

[0067] The distance L4 between the end of the airflow guide 122D and the blade 122C can be 2mm-3mm, for example, 2.5mm.

[0068] The maximum radius R of the annular wind screen 122 is the farthest distance from the center of the blade 122C due to the inclination of the blade 122C of the annular wind screen 122. The value of R can be 35mm-40mm. When the inner wall of the filter screen abuts against the annular wind screen 122, the radius of the filter screen is also approximately 35mm-40mm. The angle a between the length direction of the blade 122C and the radius R of the annular wind screen 122 can be 55°-75°, for example, 70°.

[0069] Since the number of blades 122C, the length of the blade 122C, and the inclination angle of the blade affect both the filtering effect and the cleaning ability of the dust collector, for example, a large number of blades 122C results in a dense arrangement of the blades 122C, which is good for dust filtering, but increases the pressure drop of the annular wind screen 122, resulting in loss of suction energy, and a small number of blades 122C reduces the filtering effect, although the loss of suction energy is small. For example, the inclination angle of the blade 122C (in this embodiment, the supplementary angle of the blade 122C relative to the angle a of the radius R) also affects the strength of the secondary cyclone formed in the annular wind screen 122. The greater the inclination angle of the blade 122C, the smaller the strength of the secondary cyclone in the annular wind screen 122, and the shorter the length of the blade 122C, the smaller the strength of the secondary cyclone in the annular wind screen 122. By reasonably setting the number, length, and inclination angle of the blade 122C, the dust collector can achieve good dust particle filtering effect and cleaning power. Preferably, the number of blades 122C can be 15, the length L2 of the blade 122C can be 15.5mm, and the inclination angle of the blade 122C can be 20°.

[0070] Figure 6C And Figure 6D are schematic structural diagrams of the filter screen 123 and the annular wind screen 122 in the two embodiments. It should be noted that in the Figure 6In the embodiment shown, the ends of the blades 122C of the annular baffle 122 and the ends of the airflow guide 122D can be attached to the filter screen 123 or can form a gap with the filter screen 123, and Figure 6 The filter screen 123 of the embodiment shown is still provided with mesh holes between the ends of the airflow guide 122D and the ends of the blades 122C. Dust particles in cyclone motion outside the filter screen 123 can enter the stop groove 122F through the mesh holes on the filter screen 123. However, since the air pressure in the stop groove 122F is basically the same as the air pressure outside the filter screen 123, the stop groove 122F has no suction force on dust, so dust basically does not accumulate in the stop groove 122F. In order to further prevent dust from accumulating in the stop groove 122F, a Figure 6C and Figure 6D embodiment shown. Figure 6C and Figure 6D The embodiment shown can prevent dust from accumulating in the stop groove 122F.

[0071] As Figure 6C shown, in one embodiment, the ends of the airflow guide 122D and the ends of the blades 122C abut on the filter screen 123, and the area between the ends of the airflow guide 122D and the ends of the blades 122C is not provided with mesh holes. As Figure 6D shown, Figure 6D The embodiment shown is different from the embodiment shown in Figure 6C in that the stop groove 122F in Figure 6C is physically filled to disappear.

[0072] By providing the annular baffle 122, the direction of the airflow is substantially along the tangential direction of the outer periphery of the annular baffle 122 to pass through the filter port 122A into the second dust chamber 152. The airflow is accelerated when passing through the annular baffle 122 to form a second cyclone in the second dust chamber 152. Therefore, the extension direction of the filter port 122A on the annular baffle 122 can affect the wind speed of the second cyclone. As Figure 6A shown, if the extension direction of the filter port 122A is too small with respect to the radial direction of the annular baffle 122, for example, the extension direction of the filter port 122A2 is 0 with respect to the radial direction of the annular baffle 122, so that the degree of acceleration of the airflow passing through the filter port 122A2 is insufficient, thus resulting in a slower wind speed of the second cyclone; while the extension direction of the filter port 122A1 is larger with respect to the radial direction of the annular baffle 122, so that the degree of acceleration of the airflow passing through the filter port 122A1 is greater, thus resulting in a larger wind speed of the second cyclone.

[0073] The present application provides an embodiment which is different from the above-mentioned various embodiments in that, in combination with Figure 6 , the dust collector in the embodiment cancels Figure 6A filter screen 123 is disposed outside the annular grating 122. Dust particles in the airflow are blocked by the stop groove 122F. Other features of this embodiment have been described in the above embodiments. In this embodiment, the annular grating 122 provides suction force, and the airflow outside the annular grating 122 spirals around the outer periphery of the annular grating 122 and enters the interior of the annular grating 122 through the filter port 122A.

[0074] In the embodiment where a filter screen 123 is installed outside the annular grating 122, the airflow is mostly blocked by the filter screen 123. Figure 6 The trajectory of the airflow 41 shown enters the annular grating 122. At this time, the particles in the airflow 41 are blocked by the filter screen 123 and may clog the filter screen 123.

[0075] For the embodiment where no filter screen 123 is installed outside the annular grating 122, for Figure 6 In the trajectory shown by the airflow 42, dust in the airflow 42 can be blocked by the stop groove 122F and slide down along the stop groove 122F into the bottom of the first dust chamber 151 and be contained within the first dust chamber 151. Therefore, this embodiment does not include a filter screen 123, which can effectively prevent the filter screen 123 from becoming clogged. Because the filter screen 123 is eliminated, the suction power of the vacuum cleaner will not decrease due to the filter screen 123, thus improving the suction power of the vacuum cleaner.

[0076] like Figure 2 As shown, the second cyclone unit 120 also includes a second air duct flange 142 connected to the base 121, the second air duct flange 142 extending into the first dust chamber 151. Along the axial direction of the housing 130, an annular air grating 122 is located between the second air outlet 162B and the second air duct flange 142. The second air duct flange 142 includes a first baffle portion 142A and a second baffle portion 142B disposed on the outer periphery of the first baffle portion 142A, forming a baffle cavity 143C between the first baffle portion 142A and the base 121. The first cyclone in the first dust chamber 151 gathers dust particles at the bottom of the first dust chamber 151, and the first baffle portion 142A and the second baffle portion 142B can prevent the dust particles at the bottom of the first dust chamber 151 from moving upward and entering the second dust chamber 152 through the annular air grating 122.

[0077] like Figure 2As shown, the cyclone separation device 100 further comprises a first air duct flange 141. The first air duct flange 141 is arranged at the joint of the first air inlet duct 161 and the second air inlet duct 162, and forms a seal at the joint of the first air inlet duct 161 and the second air inlet duct 162. The skirt of the first air duct flange 141 extends into the second dust chamber 152. In the axial direction of the housing 130, the first air duct flange 141 is located substantially in the middle of the second dust chamber 152. The exhaust air duct 163 of the cyclone separation device 100 is connected with a filter element 170, which can be a HEPA filter. The air passing through the exhaust air duct 163 passes through the filter element 170 before entering the main machine device 200. The inlet of the exhaust air duct 163 is located above the first air duct flange 141. The second cyclone in the second dust chamber 152 collects small dust particles at the bottom of the second dust chamber 152. The first air duct flange 141 prevents dust at the bottom of the second dust chamber 152 from entering the exhaust air duct 163, thereby preventing dust particles from clogging the filter element 170.

[0078] In addition, the first air inlet duct 161 is arranged in the middle of the second cyclone unit 120. The second dust chamber 152 is arranged around the first air inlet duct 161. The first air inlet duct 161 and the second air inlet duct 162 are arranged in a detachable manner. From the perspective of mold design, the detachable air ducts are beneficial for thin-wall design and simplify the mold design of the cyclone separation device 100. As shown, Figure 5 As shown, the second dust chamber 152 is substantially conical in structure. Specifically, in the direction of the central axis of the second cyclone unit 120, the cross-sectional area of the top of the second dust chamber 152 is large, and the cross-sectional area of the bottom is small. The wind speed of the second cyclone increases from top to bottom, which helps to improve the separation effect of dust.

[0079] Figure 7 A schematic view of the structure when the power suction port 231 of the main machine device 200 in the cleaner of an embodiment of the present application is separated from the exhaust end 131B of the cyclone separation device 100. As shown, Figure 7 As shown, the cleaner in an embodiment comprises a main machine device 200 and a cyclone separation device 100. The main machine device 200 and the cyclone separation device 100 are rotationally connected to enable the power suction port 231 of the main machine device 200 to be docked with or separated from the exhaust end 131B of the cyclone separation device 100.

[0080] Further, as shown, Figure 7As shown, the power suction port 231 of the host device 200 is used to provide suction power. For example, the host device 200 comprises a handle 210, a battery unit 220 and a motor unit 230. The handle 210 is used as a handheld part of the vacuum cleaner. The battery unit 220 is used to provide electric power for the whole vacuum cleaner. The motor unit 230 is electrically connected to the battery unit 220 to provide suction power for the whole vacuum cleaner when the battery unit 220 provides electric power. When the power suction port 231 of the host device 200 is docked with the exhaust end 131B of the cyclone separating device 100, the motor unit 230 provides suction power, and the airflow enters the cyclone separating device 100 from the suction nozzle 132C of the cyclone separating device 100, and completes the separation of wind and dust particles in the first cyclone unit 110 and the second cyclone unit 120 of the cyclone separating device 100. The dust particles are left in the first dust chamber 151 and the second dust chamber 152 of the cyclone separating device 100, and the clean wind enters the motor unit 230 from the exhaust end 131B of the cyclone separating device 100, and is then discharged from the motor unit 230 of the vacuum cleaner.

[0081] It should be noted that, in order to prevent dust particles from entering the motor unit 230 from the exhaust end 131B of the cyclone separating device 100 and damaging the motor unit 230, the exhaust end 131B of the cyclone separating device 100 is provided with a filter element 170. After the exhaust end 131B is docked with the power suction port 231, the wind discharged from the exhaust end 131B needs to pass through the filter element 170 to enter the power suction port 231. The filter element 170 can be a HEPA filter. The HEPA filter is also called a HEPA filter, which is made of laminated borosilicate microfiber, and can remove at least 97.00% of the particles in the airflow passing through the HEPA filter, and the diameter of the particles can be as small as 0.3 microns. The filter element 170 is detachably mounted on the exhaust end 131B. When it is necessary to clean or replace the filter element 170, the exhaust end 131B of the vacuum cleaner and the power suction port 231 can be separated, and then the filter element 170 is replaced or removed for cleaning.

[0082] The filter element 170 is a key element to ensure that the motor unit 230 is not damaged by dust particles. When the filter element 170 is replaced or disassembled for cleaning, it can be forgotten to install the filter element 170 back to the exhaust end 131B. In order to be able to prevent this from happening, the main machine device 200 is provided with a detection unit for detecting whether the filter element 170 is installed on the exhaust end 131B of the cyclone separation device 100. Specifically, a magnetic piece 241 is arranged in the filter element 170, and a control element is arranged in the main machine device 200. The detection unit includes a magnetic reed switch 240 electrically connected to the control element. When the exhaust end 131B is docked with the power suction port 231, the magnetic reed switch 240 senses the magnetic piece 241 to generate an induction signal for transmission to the control element. Only when the control element receives this induction signal, the motor unit 230 of the dust collector can be started.

[0083] The working principle of the magnetic reed switch 240 and the magnetic piece 241 is further explained below. The magnetic reed switch 240 can be a dry reed tube in particular. When the exhaust end 131B is docked with the power suction port 231, the magnetic piece 241 on the filter element 170 in the exhaust end 131B is designed to be about 2.5mm away from the dry reed tube. In addition, the dry reed tube is a mechanical device, which does not need external power supply when working. However, the Hall switch needs to work with power supply. Therefore, when the Hall switch is used as the element of the detection unit for detecting whether the filter element 170 is installed on the exhaust end 131B, the requirement for the working environment is more stringent, and it is not as stable as the dry reed tube.

[0084] As shown in Figure 7 , the dust collector further includes a locking device 300 for locking the cyclone separation device 100 and the main machine device 200 when the exhaust end 131B is docked with the power suction port 231, and the locking device 300 is also used to unlock the cyclone separation device 100 and the main machine device 200.

[0085] The detailed structure of the locking device 300 is further described below. Figure 8 is a partial schematic view of the locking device 300 of the dust collector in an embodiment of the present application and the surrounding components, Figure 9 is a structure schematic view of the locking device 300 in Figure 8 . As shown in Figure 8As shown, the cyclone separating device 100 comprises a housing 130, which is provided with a locking member 131G at an exhaust end 131B of the housing 130. The locking device 300 comprises a lock catch 310 for hooking the locking member 131G. The locking device 300 further comprises an unlocking unit 320 for driving the lock catch 310 to disengage from the locking member 131G. The lock catch 310 is pivotally connected to the main machine device 200. Specifically, the lock catch 310 has a hook end 311 and a driving end 312. The locking device 300 further comprises a first elastic member 330 for elastically abutting the lock catch 310 to keep the hook end 311 hooked to the locking member 131G. The first elastic member 330 can be a spring. When unlocking, the unlocking unit 320 is used to abut the driving end 312 to disengage the hook end 311 from the locking member 131G.

[0086] In combination Figure 8 and Figure 9 , the position where the lock catch 310 is pivotally connected to the main machine device 200 is a pivot position. The distance between the hook end 311 and the pivot position is greater than the distance between the driving end 312 and the pivot position. That is, the lock catch 310 forms a lever structure, which has the effect of saving labor when unlocking.

[0087] As Figure 8 and Figure 9As shown, the unlocking unit 320 includes a connecting rod 321 and a button 322. The connecting rod 321 has a first rod end 321A and a second rod end 321B. The portion between the first rod end 321A and the second rod end 321B is rotationally connected to the main machine device 200. The first rod end 321A is used to abut against the driving end 312. The button 322 is used to press the second rod end 321B. Since the connecting rod 321 is rotationally connected to the main machine device 200, when the button 322 presses the second rod end 321B, the first rod end 321A can be lifted upward to drive the lock catch 310 to rotate, and then the lock catch 310 is disengaged from the locking member 131G. The button 322 is also connected with a second elastic member 323 for driving the button 322 to return. The second elastic member 323 can be a spring. When the button 322 is pressed, the button 322 compresses the second elastic member 323, and when the button 322 is not pressed, the second spring pushes the button 322 back to the original position. It should be noted that the second elastic member 323 can also not be provided. Since the button 322 is pressed, the connecting rod 321 is rotated to drive the lock catch 310 to rotate to unlock. The rotation of the lock catch 310 also compresses the first elastic member 330. When the button 322 is not pressed, the first elastic member 330 drives the lock catch 310 to rotate in the opposite direction to return to the original position, so that the driving end 312 presses the first rod end 321A of the connecting rod 321 to drive the connecting rod 321 to rotate in the opposite direction, and thus the second rod end 321B also pushes the button 322 to return to the original position. Therefore, the second elastic member 323 mainly plays a role of assistance. The connecting rod 321 and the lock catch 310 in the above-mentioned locking device 300 are both small in size, which makes the structure of the dust collector more compact.

[0088] In combination Figure 7 , after the locking device 300 is unlocked, the cyclone separation device 100 can rotate in the clockwise direction under the action of gravity to separate the power suction port 231 from the exhaust end 131B. In addition, as shown in Figure 8 and Figure 9 , the hook end 311 is bent to the left, and the locking member 131G is bent to the right, and the two can form a self-locking fit. When the power suction port 231 is connected to the exhaust end 131B and locked by the locking device 300, under the action of gravity of the cyclone separation device 100, the self-locking fit of the hook end 311 and the locking member 131G is achieved, and the firm locking of the cyclone separation device 100 and the main machine device 200 is achieved. As shown in Figure 10 , the principle diagram of the self-locking fit of the lock catch 310 and the locking member 131G is shown in Figure 10 . Figure 10The rotating position of the cyclone separating device 100 and the main device 200 is the connecting shaft 202, and the rotating position of the locking catch 310 and the main device 200 is the shaft portion 310A. When the cyclone separating device 100 is rotated due to its own weight or the user rotates it downward, the cyclone separating device 100 tends to rotate around the connecting shaft 202 in the clockwise direction, and the locking catch 310 tends to rotate around the shaft portion 310A in the clockwise direction. At the position where the locking member 131G and the hook end 311 of the locking catch 310 are in contact, the locking member 131G provides the hook end 311 with a force F1, the direction of the force F1 is tangent to the rotating direction of the locking member 131G. The force F1 generates an upward component force F2, under the action of the component force F2, the hook end 311 of the locking catch 310 tends to rotate counterclockwise around the shaft portion 310A, thus forming a self-locking.

[0089] One embodiment of the present application provides a dust collector including a dust separating device and an electric dust collecting accessory. The dust separating device is used to separate dust from airflow. The dust separating device can be, for example, a cyclone separating device 100, which separates dust from airflow by centrifugal force of cyclone. Alternatively, the dust separating device can also be a filter element, which is provided with filter holes for filtering dust, so that airflow can pass through the filter element while dust cannot pass through the filter element.

[0090] The dust separating device includes a suction port unit 132 and a housing 130 having a suction end 131A and an exhaust end 131B. The suction port unit 132 includes an end cap 132B, a suction nozzle 132C connected to the end cap 132B, and a first electrical element 132A provided on the suction nozzle 132C. The end cap 132B can be docked with the suction end 131A. The cyclone separating device 100 is taken as an example for detailed description below. As shown in Figure 11 The cyclone separating device 100 includes the housing 130 and the suction port unit 132. The housing 130 has the suction end 131A and the exhaust end 131B. The housing 130 is rotationally connected to the main device 200 through the connecting shaft 202, so that the exhaust end 131B can be docked with the power suction port 231 of the main device 200. The suction port unit 132 has a rotating shaft 133 rotationally connected to the housing 130. The suction port unit 132 rotates relative to the housing 130 through the rotating shaft 133, so that the suction port unit 132 can be docked with the suction end 131A. As shown in Figure 11 When the suction port unit 132 rotates relative to the housing 130 and opens the housing 130, dust in the first dust chamber 151 and the second dust chamber 152 in the housing 130 can be cleaned through the suction end 131A. As shown in Figure 12 As shown in Figure 12 To Figure 11Figure 6 is a structural schematic view of the cyclone separation device 100 from another perspective. The rotating shaft 133 is provided with a first wire passing hole 133A that communicates with the inside of the suction port unit 132, and the suction port unit 132 is provided with a first electrical element 132A. The outer wall of the housing 130 is provided with a wire slot, and the wire slot is provided with a wire that is electrically connected to the control element of the main machine device 200. The wire passes through the first wire passing hole 133A into the suction port unit 132 and is electrically connected to the first electrical element 132A. The first electrical element 132A can be a terminal for power supply. When the suction port unit 132 of the dust collector is provided with an electrically powered floor brush or other electrically powered cleaning accessory, the electrically powered floor brush is electrically connected to the first electrical element 132A, so that the electrically powered floor brush can be powered by the battery unit 220 of the main machine device 200, and the operation of the electrically powered floor brush can be controlled by the control element of the main machine device 200. The electrically powered cleaning accessory has a second electrical element, and when the electrically powered cleaning accessory is installed on the suction port unit 132, the second electrical element is electrically connected to the first electrical element 132A.

[0091] The electrically powered floor brush is connected to the suction port unit 132, and the suction port unit 132 needs to be able to open relative to the housing 130 to clean dust particles inside the housing 130. The suction port unit 132 is not directly connected to the main machine device 200, but is connected to the main machine device 200 through the housing 130. The electrically powered floor brush connected to the suction port unit 132 needs to be provided with power and control signals by the main machine device 200 to work normally. By providing the rotating shaft 133 with the first wire passing hole 133A that communicates with the suction port unit 132 for passing the wire, the abrasion of the wire caused by the rotation of the suction port unit 132 relative to the housing 130 can be effectively prevented, and the wire is also prevented from being subjected to a large pulling force or bending force, thereby preventing the wire from being damaged and improving the safety performance of the dust collector.

[0092] As shown in Figure 12As shown, the wire trough may include a first wire trough 131C and a second wire trough 131D. The wire may include a first wire 131E and a second wire 131F. The first wire 131E is disposed in the first wire trough 131C, and the second wire 131F is disposed in the second wire trough 131D. The first wire through hole 133A has inlets at both ends along its own axis. The first wire 131E and the second wire 131F enter the first wire through hole 133A from the inlets at both ends of the first wire through hole 133A, respectively. The middle position of the first wire through hole 133A communicates with the suction port unit 132. The wire entering the first wire through hole 133A can enter the suction port unit 132 through the middle position of the first wire through hole 133A and electrically connect to the first electrical component 132A of the suction port unit 132. Among them, the first wire 131E can be the drive wire of the electric floor brush, and the second wire 131F can be the LED light wire of the electric floor brush. Furthermore, the suction unit 132 includes an end cap 132B and a suction nozzle 132C, with the end cap 132B connected to the suction nozzle 132C. The suction nozzle 132C has a ventilation hole in its center, and the end cap 132B also has a ventilation hole in its center. The ventilation holes of the suction nozzle 132C and the end cap 132B are connected. When the end cap 132B is aligned with the suction end 131A, the ventilation hole of the end cap 132B can also connect with the first air inlet 161A of the suction end 131A of the housing 130. Figure 11 As shown, the cyclone separator 100 also includes a locking unit 180 for locking the housing 130 and the suction unit 132 when the suction unit 132 is docked with the suction end 131A. The locking unit 180 is also used to unlock the suction unit 132 from the housing 130. The locking unit 180 may be a snap-fit ​​structure.

[0093] like Figure 12 As shown, the cyclone separator 100 also includes an elastic unlocking member 190. The elastic unlocking member 190 can be a torsion spring. One end of the torsion spring is connected to the housing 130 and the other end is connected to the suction unit 132, so that the housing 130 and the suction unit 132 can be released when the locking unit 180 unlocks the suction unit 132 and the suction end 131A.

[0094] Figure 13 This is a structural schematic diagram of a vacuum cleaner from another perspective in one embodiment of this application. The main unit 200 is provided with a connecting shaft 202 rotatably connected to the housing 130. The connecting shaft 202 is provided with a second wire passage hole 201 communicating with the interior of the main unit 200. A wire enters the main unit 200 through the second wire passage hole 201 and is electrically connected to a control element within the main unit 200. (Combined with...) Figure 7When the shell 130 rotates to a certain angle relative to the host device 200, the outer side wall of the shell 130 can abut against the battery unit 220. That is, the battery unit 220 limits the angle of the shell 130 relative to the host device 200 to prevent the opening angle from being too large, which causes the wires in the second wire passing hole 201 to be pulled and worn more severely.

[0095] Figure 14 FIG. 4 is a structural schematic diagram of the shell 130 of the host device 200 in another embodiment, Figure 15 FIG. 5 is a structural schematic diagram of the mouthpiece unit 132 cooperating with the shell 130 shown in FIG. 1. In the embodiment shown in FIG. 5, Figure 14 Figure 14 In the embodiment shown in FIG. 1, Figure 15 In the embodiment shown in FIG. 1, the shell 130 is provided with a first electrical connector X, and the mouthpiece unit 132 is provided with a second electrical connector Y. For example, the second electrical connector Y can be provided on the end cover 132B.

[0096] In combination with the embodiment shown in FIG. 1, Figure 11 In combination with the embodiment shown in FIG. 1, Figure 14 The structure of the embodiment shown in FIG. 2 is basically the same as that of the embodiment shown in FIG. 1, that is, the rotation connection of the shell 130 and the mouthpiece unit 132 is realized through the rotation shaft 133. Figure 11 Figure 14 The difference between the embodiment shown in FIG. 2 and the embodiment shown in FIG. 1 lies in that, Figure 11 Figure 14 In the structure of the embodiment shown in FIG. 2, the first wire passing hole 133A is not provided at the rotation shaft 133, but the electrical connection is realized through the contact of the first electrical connector X and the second electrical connector Y.

[0097] Specifically, Figure 14 In the embodiment shown in FIG. 2, the first electrical connector X and the second electrical connector Y are both metal connectors, the first electrical connector X is electrically connected to the first wire 131E, and the second electrical connector Y is electrically connected to the first electrical element 132A. Figure 14 The position of the first electrical connector X in the embodiment shown in FIG. 2 corresponds to the position of X1 in the embodiment shown in FIG. 1, Figure 11 The position of the second electrical connector Y in the embodiment shown in FIG. 2 corresponds to the position of Y1 in the embodiment shown in FIG. 1. For example, the first electrical connector X can be a tab, and the second electrical connector Y can be a pin. When the mouthpiece unit 132 is closed on the shell 130, the first electrical connector X and the second electrical connector Y are in contact and realize electrical connection, and after the mouthpiece unit 132 is opened relative to the shell 130, the first electrical connector X and the second electrical connector Y are separated. Figure 14 Figure 11 As shown in FIG. 2,

[0098] As shown in FIG. 2, Figure 16 Figure 16 ​​​​​This is a partial structural diagram of a vacuum cleaner in one embodiment. The diagram shows a housing 130 and a suction unit 132, which are rotatably connected by a rotating shaft 133. For example, the housing 130 can be cylindrical, with the rotating shaft 133 located at one end of the housing 130. Along the diameter of the cylindrical housing 130, a portion of a locking unit 180 is provided at the other end. The locking unit 180 includes a first locking member on the housing and a second locking member on the suction unit. The first locking member can be either a locking pin or a locking hole, and the second locking member can be either a locking pin or a locking hole. In other words, the locking unit can include a locking pin and a locking hole that engage with each other. For example, the locking pin can be located on the housing 130 and the locking hole on the suction unit 132, or the locking pin can be located on the suction unit 132 and the locking hole on the housing 130. When the suction unit 132 is closed on the suction end 131A of the housing 130, the suction unit 132 and the housing 130 can be locked by the locking unit 180.

[0099] In the above embodiments, when the suction unit 132 and the housing 130 are locked, the suction unit 132 and the housing 130 are connected by the locking unit 180 and also by the rotating shaft 133. The suction unit 132 includes an end cap 132B and a suction nozzle 132C connected to the end cap 132B. The suction nozzle 132C is used to connect vacuuming accessories such as floor brushes and mite removal brushes. When the vacuuming accessories are connected to the suction nozzle 132C, the total weight of the suction unit 132 and the vacuuming accessories increases. However, since the suction unit 132 and the housing 130 are only connected by the rotating shaft 133 and the locking unit 180, the connection strength may be insufficient.

[0100] To improve the connection strength between the rotating shaft 133 and the locking unit 180, in one embodiment, a locking structure 400 is provided on the suction port unit 132 of the vacuum cleaner. The locking structure 400 includes a first locking component 410 and a second locking component 420 that can lock into each other. The first locking component 410 is disposed on the housing 130, and the second locking component 420 is disposed on the suction port unit 132. Figure 16 In the illustrated embodiment, two sets of locking structures 400 are shown, each set including a first locking component 410 and a second locking component 420 capable of locking into each other. The two sets of locking structures 400 are arranged along the radial direction of the vacuum cleaner housing 130.

[0101] Figure 17 for Figure 16A structure diagram of the mouth unit 132 in the vertical direction of the axial direction is shown in FIG. 13. A hole 132C1 is provided on the mouth 132C. When the cleaning accessory is inserted into the hole 132C1, the cleaning accessory can drive the second locking assembly 420 to lock with the first locking assembly 410. When the cleaning accessory is pulled out of the hole 132C1, the first locking assembly 410 and the second locking assembly 420 are unlocked. It can also be understood that, when the cleaning accessory is pulled out of the hole 132C1, as long as the cleaning accessory is out of contact with the second locking assembly 420, the first locking assembly 410 and the second locking assembly 420 are unlocked.

[0102] When the cleaning accessory is inserted into the hole 132C1 of the mouth unit 132, the total weight of the mouth unit 132 and the cleaning accessory increases.

[0103] As shown in FIG. 14, a spring-loaded pin is provided on the cleaning accessory. The spring-loaded pin can include a pin body and a spring connected to the pin body. A hole is provided on the inner wall of the hole 132C1. When the cleaning accessory is inserted into the hole 132C1 to the target position, the spring-loaded pin on the cleaning accessory is inserted into the hole on the inner wall of the hole 132C1. At this time, the position of the cleaning accessory and the mouth unit 132 is locked. A lock release button k is provided on the mouth unit 132. When the lock release button k is pressed, the lock release button k ejects the spring-loaded pin from the hole on the inner wall of the hole 132C1. At this time, the cleaning accessory can be pulled out of the hole 132C1. Figure 16

[0104] Of course, in other embodiments, a spring-loaded pin can also be provided on the inner wall of the hole 132C1, and a hole is provided on the cleaning accessory. The spring-loaded pin can include a pin body and a spring connected to the pin body. The middle part of the pin body can be rotatably connected to the mouth unit 132. Among the two ends of the pin body, the first end is connected to the mouth unit 132 through the spring, and the second end extends into the inside of the hole 132C1. When the cleaning accessory is inserted into the hole 132C1 to the target position, the pin body extending into the inside of the hole 132C1 is inserted into the hole on the cleaning accessory. At this time, the position of the cleaning accessory and the mouth unit 132 is locked. A lock release button k is provided on the mouth unit 132. The lock release button k is connected to the first end of the pin body. When the lock release button k is pressed, the pin body rotates relative to the mouth unit 132, the spring is compressed, and the second end is withdrawn from the hole. At this time, the cleaning accessory can be pulled out of the hole 132C1. When the lock release button k is not pressed, the first end extends into the inside of the hole 132C1 under the action of the spring.

[0105] ​When the dusting accessory is inserted into the hole 132C1 of the suction nozzle unit 132, the second locking assembly 420 provided on the dusting accessory engages with the first locking assembly 410 provided on the housing 130, thereby improving the connection strength between the suction nozzle unit 132 and the housing 130. When the dusting accessory is pulled out of the hole 132C1 of the suction nozzle unit 132, the second locking assembly 420 and the first locking assembly 410 can be disengaged, thereby facilitating the separation of the housing 130 from the suction nozzle unit 132. For example, when the dust collector is working, dust is stored in the housing 130, and when the housing 130 is separated from the suction nozzle unit 132, the dust in the housing 130 can be poured out. Therefore, when the dusting accessory is inserted into the hole 132C1 of the suction nozzle unit 132, the housing 130 cannot be separated from the suction nozzle unit 132 to prevent dust leakage, but when the dusting accessory is pulled out of the hole 132C1 of the suction nozzle unit 132, the housing 130 needs to be separated from the suction nozzle unit 132 to facilitate the separation, thereby facilitating the pouring of dust. Therefore, the dust collector in the embodiment has the advantages of locking the housing 130 from the suction nozzle unit 132 when the dusting accessory is inserted into the hole 132C1 of the suction nozzle unit 132, and facilitating the separation of the housing 130 from the suction nozzle unit 132 when the dusting accessory is pulled out of the hole 132C1 of the suction nozzle unit 132.

[0106] The first locking assembly 410 is provided on the housing 130. The first locking assembly 410 can include a slot structure, for example, a slot structure is formed on the housing 130, and at least a part of the second locking assembly 420 is inserted into the slot structure when the second locking assembly 420 engages with the first locking assembly 410. For example, the first locking assembly 410 can include a lock ring, which can be a ring-shaped member, and the second locking assembly 420 can be hooked on the lock ring when the second locking assembly 420 engages with the first locking assembly 410.

[0107] As Figure 17As shown, the second locking assembly 420 includes a locking pin 421 and a resilient return member 422, the resilient return member 422 connecting the locking pin 421 and the suction port unit 132. The locking pin 421 has a driving portion 4211 and a locking portion 4212. When the cleaning accessory is inserted into the hole 132C1, the cleaning accessory can contact and push the driving portion 4211 of the locking pin 421, and then drive the locking pin 421 to move relative to the suction port unit 132, so that the locking portion 4212 of the locking pin 421 is locked with the first locking assembly 410. When the first locking assembly 410 includes a slot structure, the locking portion 4212 can be inserted into the slot structure. When the first locking assembly 410 includes a locking ring, the locking portion 4212 can hook the locking ring. When the cleaning accessory is inserted into the hole 132C1 and pushes the locking pin 421 to move relative to the suction port unit 132, the locking pin 421 compresses the resilient return member 422. When the cleaning accessory is pulled out of the hole 132C1, specifically, when the cleaning accessory is out of contact with the locking pin 421, the resilient return member 422 drives the second locking assembly 420 to reset, so that the second locking assembly 420 is unlocked with the first locking assembly 410.

[0108] As shown, Figure 17 The suction port unit 132 is provided with a sliding groove 132C2, and the extension direction of the sliding groove 132C2 can be along the radial direction of the suction port unit 132. The locking pin 421 of the second locking assembly 420 is slidingly connected to the sliding groove 132C2.

[0109] In other embodiments, the locking pin 421 can also be rotatably connected to the suction port unit 132. For example, the locking pin 421 and the two ends of the rotation shaft of the suction port unit 132 are respectively the locking portion 4212 and the driving portion 4211 of the locking pin 421. When the cleaning accessory is inserted into the hole 132C1, the cleaning accessory can contact and push the driving portion 4211 of the locking pin 421, so that the locking pin 421 rotates relative to the suction port unit 132 and rotates to the state that the locking portion 4212 is locked with the first locking assembly 410. When the cleaning accessory is pulled out of the hole 132C1, the resilient return member 422 can drive the locking pin 421 to rotate reversely relative to the suction port unit 132, so that the locking portion 4212 is unlocked with the first locking assembly 410.

[0110] In Figure 17In the illustrated embodiment, the locking pin 421 includes a driving portion 4211 and a locking portion 4212. For example, when the locking pin 421 is in the shape of an elongated bar, the two ends of the elongated bar along the length direction of the elongated bar are the driving portion 4211 and the locking portion 4212, respectively. For another example, when the locking pin 421 is in the shape of an ellipse, the two ends of the ellipse along the long axis direction of the ellipse are the driving portion 4211 and the locking portion 4212, respectively. The driving portion 4211 is used to extend into the hole 132C1 before the cleaning accessory is inserted into the hole 132C1. Because the elastic restoring member 422 connects the locking pin 421 and the suction port unit 132, when the cleaning accessory is not inserted into the hole 132C1 of the suction port unit 132, the driving portion 4211 extends into the hole 132C1 under the action of the elastic restoring member 422. The locking portion 4212 is used to be locked with the first locking assembly 410 when the driving portion 4211 is pushed after the cleaning accessory is inserted into the hole 132C1. That is, when the cleaning accessory is inserted into the hole 132C1 and the driving portion 4211 is pushed, the locking pin 421 can drive the elastic restoring member to be compressed, and in this process, the locking portion 4212 moves synchronously with the driving portion 4211, and finally the locking portion 4212 can be locked with the first locking assembly 410.

[0111] In one embodiment, the driving portion 4211 can also not extend into the hole 132C1. That is, no matter whether the cleaning accessory extends into the hole 132C1 or not, the driving portion 4211 does not extend into the hole 132C1. Specifically, the locking pin 421 includes the driving portion 4211 and the locking portion 4212, and the driving portion 4211 is accommodated in the mounting groove. Because the elastic restoring member 422 connects the locking pin and the suction port unit 132, when the cleaning accessory is not inserted into the hole 132C1 of the suction port unit 132, the driving portion 4211 is also accommodated in the mounting groove under the action of the elastic restoring member 422. The driving portion 4211 being accommodated in the mounting groove means that the driving portion 4211 does not extend into the hole 132C1. Further, the cleaning accessory is provided with a protruding portion, for example, the cleaning accessory at least includes a cylindrical tubular structure, and the protruding portion is arranged on the outer wall of the cylindrical tubular structure. The protruding portion can have a certain elasticity, and when the cylindrical tubular structure is inserted into the hole 132C1 in the first stage, the protruding portion is in a compressed state. With the further insertion of the cylindrical tubular structure into the hole 132C1, and the movement of the protruding portion to the position of the mounting groove, the protruding portion elastically extends along the radial direction of the cylindrical tubular structure, thereby pushing the driving portion 4211 accommodated in the mounting groove. At this time, the driving portion can compress the elastic restoring member 422, and in this process, the locking portion 4212 moves synchronously with the driving portion 4211, and finally the locking portion 4212 can be locked with the first locking assembly 410.

[0112] In Figure 17 In the illustrated embodiment, the number of the locking structures 400 is two. In other embodiments, the number of the locking structures 400 is at least two, for example, the number can be three, four or more. Continuing to take the embodiment of FIG. 4 as an example,Figure 17 As shown, at least two locking structures 400 are arranged radially along the housing 130.

[0113] like Figure 13 As shown, the vacuum cleaner also includes a locking unit 180, which is disposed circumferentially between at least two locking structures 400 along the housing 130. The locking unit 180 includes a first locking member and a second locking member capable of locking and unlocking. The first locking member is disposed on the housing 130, and the second locking member is disposed on the suction port unit 132. The difference between the locking unit 180 and the locking structure 400 is that when the suction port unit 132 and the housing 130 are engaged, i.e.... ​ In the engaged state shown, locking unit 180 locks the suction port unit 132 and the housing 130. Furthermore, locking structure 400 is activated only after the vacuum cleaner accessory is inserted into the channel 132C1, further locking the suction port unit 132 and the housing 130. Locking structure 400 ensures enhanced locking strength between the suction port unit 132 and the housing 130 after the vacuum cleaner accessory is inserted. When the vacuum cleaner accessory is removed, the vacuum cleaner is not in operation, and locking unit 180 alone is sufficient to lock the suction port unit 132 and the housing 130.

[0114] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A vacuum cleaner characterised in that, The utility model relates to a cyclone separation device (100) connected with the host device (200), the cyclone separation device (100) comprises a shell (130) and a cyclone separation assembly arranged in the shell (130), the cyclone separation assembly comprises a second cyclone unit (120), the second cyclone unit (120) comprises a ring-shaped air baffle (122) and a filter screen (123) arranged at the outer periphery of the ring-shaped air baffle (122), the ring-shaped air baffle (122) comprises blades (122C) and airflow guide pieces (122D) arranged at the outer periphery of the blades (122C), the blades (122C) are multiple, filter openings (122A) are formed between adjacent blades (122C), the airflow guide pieces (122D) and the blades (122C) form guide portions (122G), the guide portions (122G) are arranged towards the filter openings (122A), and the airflow guide pieces (122D) extend towards the radial direction of the ring-shaped air baffle (122). The end of the airflow guide piece (122D) and the end of the blade (122C) abut against the inner wall of the filter screen (123). The cyclone separation assembly and the inner side wall (130A) of the shell (130) form a first dust chamber (151), the cyclone separation assembly further comprises a base (121) connected with the ring-shaped air baffle (122) and a second air duct flange (142) connected to the base (121) and extending into the first dust chamber (151). The distance L1 between the end of the airflow guide piece (122D) and the end of the blade (122C) is 5mm-6mm, the length L2 of the blade (122C) is 15mm-16mm, the gap L3 between adjacent blades (122C) is 2mm-3mm, and the distance L4 between the end of the airflow guide piece (122D) and the blade (122C) is 2mm-3mm.

2. The dustsucker according to claim 1, characterized in that, Along the axial direction of the shell (130), the cyclone separation assembly is provided with a second air outlet (162B) for communicating with the first dust chamber (151), and the ring-shaped air baffle (122) is located between the second air outlet (162B) and the second air duct flange (142); or 3. The dustsucker according to claim 2, characterized in that, The second air duct flange (142) comprises a first blocking portion (142A) and a second blocking portion (142B) arranged at the outer periphery of the first blocking portion (142A), and the first blocking portion (142A) and the base (121) form a blocking cavity (143C).

4. The dust cup according to claim 1, wherein ​ 5. The dust cup according to claim 3, wherein ​ ​ 6. The dust cup according to claim 3, wherein The cyclone separation assembly comprises a first cyclone unit (110) connected to the second cyclone unit (120), the second cyclone unit (120) is formed with a second dust chamber (152), the first cyclone unit (110) is used for forming a first cyclone in the first dust chamber (151), and the first cyclone forms a second cyclone in the second dust chamber (152) after passing through the annular baffle (122).

7. The dustsucker according to claim 6, characterized in that The second cyclone unit (120) is formed with a first air inlet channel (161), the first cyclone unit (110) is provided with a second air inlet channel (162) communicating with the first air inlet channel (161), the second air inlet channel (162) comprises a straight air inlet channel (162C) and a spiral air inlet channel (162D) communicating with the straight air inlet channel (162C), and the straight air inlet channel (162C) communicates with the first air inlet channel (161).

8. The dust cup according to claim 7, wherein The straight air inlet channel (162C) has a second air inlet (162A) communicating with the first air inlet channel (161), and the spiral air inlet channel (162D) has a second air outlet (162B) communicating with the first dust chamber (151), and the second air outlet (162B) faces the inner side wall (130A) of the shell (130).

9. The dustsucker according to claim 8, characterized in that The second cyclone unit (120) is provided with a first air inlet channel (161), the first cyclone unit (110) is provided with a second air inlet channel (162) communicating with the first air inlet channel (161), the second air inlet channel (162) communicates with the first dust chamber (151), the first dust chamber (151) communicates with the second dust chamber (152), and the first cyclone unit (110) is further provided with an air outlet channel (163) communicating with the second dust chamber (152).

10. The dust cup according to claim 1, wherein The filter element (170) is arranged in the air outlet channel (163) of the cyclone separation device (100), and the air passing through the air outlet channel (163) passes through the filter element (170) and then enters the main machine device (200).

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