Cyclone separator for handheld vacuum cleaner and handheld vacuum cleaner

Abstract

The present invention discloses a cyclone separator for a handheld vacuum cleaner, including a first cyclone stage and a second cyclone stage, wherein the second cyclone stage includes at least a plurality of separators arranged in a circle, and two adjacent separators are connected to each other, and the plurality of separators are conical cylindrical structures, and a plurality of conical protrusions with conical surfaces are formed on the outer periphery of the second cyclone stage, and a secondary air duct is formed between each two adjacent conical protrusions, and the first cyclone stage and the secondary air duct are used to guide the incoming fluid into the separator in sequence for separation. The present invention can guide the fluid into the separator in sequence for separation through the secondary air ducts of the first cyclone stage and the second cyclone stage, thereby accelerating the wind speed and improving the separation efficiency; the structure of the separator itself is conical, and conical protrusions are naturally formed on its surface, and secondary air ducts are formed between adjacent conical protrusions, so that the fluid can enter the separator in an orderly manner without adding additional structures.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a cyclone separator of a handheld vacuum cleaner and the handheld vacuum cleaner. Background Art

[0002] With the development of electronic technology, smart homes have become more and more popular, and vacuum cleaners have entered ordinary households. Handheld vacuum cleaners are small in size and do not need to be mopped or moved on the ground when used. They are convenient to use and are very popular. Common handheld vacuum cleaners include a suction pipe, a dust cup, an airflow generating device, a cyclone separator, and a dust collection mechanism.

[0003] In the existing design, the cyclone separator includes a filter and a conical separator. The filter is mounted on the separator. The air sucked in by the suction pipe directly enters the outside of the separator through the filter, and then enters the separator to separate the air and dust. Finally, the dust falls to the bottom of the separator and then falls into the dust collection mechanism. However, in the existing design, since the air directly enters the outside of the separator through the filter, the flow direction of the air is chaotic after entering the outside of the separator. There is no clear and relatively single flow direction, so the wind speed is limited, which in turn affects the efficiency of dust and gas separation. Summary of the invention

[0004] The object of the present invention is to provide a cyclone separator for a handheld vacuum cleaner and the handheld vacuum cleaner, so as to overcome the deficiencies of the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a cyclone separator for a handheld vacuum cleaner, comprising a first cyclone stage and a second cyclone stage, wherein the second cyclone stage is located downstream of the first cyclone stage, and the second cyclone stage at least comprises a plurality of separators arranged in a circle, and two adjacent separators are connected to each other, and the plurality of separators are conical cylindrical structures, and a plurality of conical protrusions with conical surfaces are formed on the outer periphery of the second cyclone stage, and a secondary air duct is formed between each two adjacent conical protrusions, and the first cyclone stage and the secondary air duct are used to guide the incoming fluid into the separators in sequence for separation.

[0007] Preferably, the first cyclone stage includes a transition connection part and an air inlet mesh sleeve, the transition connection part is connected to the multiple separators, the interior of the transition connection part is communicated with the multiple separators, the outer surface of the transition connection part protrudes outward to form a plurality of arc convexities, the multiple arc convexities are connected one-to-one with the multiple conical convexities, a primary air duct is formed between two adjacent arc convexities, the primary air duct is communicated one-to-one with the secondary air duct, and the air inlet mesh sleeve is sleeved on the transition connection part.

[0008] Further preferably, the transition connection portion comprises a cylindrical structure, the interior of the cylindrical structure is communicated with the plurality of separators, and the outer peripheral surface of the cylindrical structure also protrudes outward to form a plurality of the arc convexities.

[0009] Further preferably, the cyclone separator of the handheld vacuum cleaner further comprises a multi-cone bracket, and the plurality of separators are arranged in the multi-cone bracket.

[0010] More preferably, the outer periphery of the multi-cone bracket forms an arc-shaped air inlet duct for guiding the fluid to enter, the arc-shaped air inlet duct is connected to the air inlet mesh sleeve, and the fluid enters the primary air duct and the secondary air duct through the arc-shaped air inlet duct.

[0011] Preferably, an air guide rib is provided at the end of the secondary air duct, and the air guide rib has an air guide slope, the end of the air guide slope faces the inlet of the separator, and the air guide slope is used to guide the fluid from the end of the secondary air duct into the separator.

[0012] Further preferably, the wind guiding slope has a set curvature.

[0013] Further preferably, a first accelerating air duct is provided at the inlet of the separator, the air guiding slope faces the inlet of the first accelerating air duct, and the cross-sectional area of ​​the inlet of the first accelerating air duct is larger than the cross-sectional area of ​​the outlet of the first accelerating air duct.

[0014] Furthermore, the wind guide ribs are arranged on the terminal ends of the conical protrusions of two adjacent separators, the outer shell component forming the first acceleration channel is integrally arranged with the shell component forming the separator, and the wind guide ribs are integrally arranged with the outer shell component forming the first acceleration channel, and in the clockwise direction, the wind guide slope of the wind guide ribs connected to the previous outer shell component forming the first acceleration channel faces the next first acceleration channel.

[0015] Further preferably, the second cyclone stage also includes a plurality of central separators arranged among the plurality of separators, the central separators are connected to each other, a second acceleration air duct is arranged at the inlet of the central separator, and the second acceleration air duct is intersected and connected with the first acceleration air duct adjacent thereto, and both have the same inlet.

[0016] The present invention also discloses a handheld vacuum cleaner, comprising the above-mentioned cyclone separator, an air suction duct, a dust cup, an airflow generating device and a dust falling chamber connected to the cyclone separator, wherein the cyclone separator and the dust falling chamber are arranged in the dust cup.

[0017] Compared with the prior art, the advantages of the present invention are at least:

[0018] 1) The cyclone separator provided by the present invention can guide the fluid into the separator in sequence for separation through the secondary air ducts of the first cyclone stage and the second cyclone stage, thereby accelerating the wind speed and improving the separation efficiency.

[0019] 2) The structure of the separator itself is conical, and conical protrusions are naturally formed on its surface. A secondary air duct is formed between adjacent conical protrusions, so that the fluid can enter the separator in an orderly manner without adding additional structures.

[0020] 3) Through the wind guide slope, on the one hand, the fluid in the secondary air duct can be more effectively guided into the separator, so that the wind does not have a significant speed reduction after reaching the wind guide slope, avoiding the generation of vortices and reducing noise. On the other hand, it can effectively increase the air outlet area, which is more conducive to the wind entering the separator.

[0021] 4) The cross-sectional area of ​​the inlet of the accelerating air duct is larger than the cross-sectional area of ​​the outlet of the accelerating air duct. In this way, the fluid can have a higher wind speed at the outlet of the accelerating air duct than at the inlet of the accelerating air duct, so that the dust carried in the air flow can obtain a greater kinetic potential energy, which is more conducive to the separation of dust from air in the separator.

[0022] 5) The cyclone separator provided by the present invention not only includes a plurality of separators arranged in a circle, but also includes a central separator arranged in the middle of the plurality of separators. The second accelerating air duct of the central separator and the first accelerating air duct of the edge separator share a common inlet, which can ensure that the central separator also has sufficient air intake and a clear air intake direction, fully utilize the space in the center of the ground, increase the number of separators, and improve the separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0024] Figure 1 A front view of a cyclone separator of a handheld vacuum cleaner provided by an embodiment of the present invention;

[0025] Figure 2 A front view of a cyclone separator of a handheld vacuum cleaner provided by an embodiment of the present invention (excluding the dust cup);

[0026] Figure 3 A top view of a cyclone separator of a handheld vacuum cleaner provided by an embodiment of the present invention;

[0027] Figure 4 It is a cross-sectional view at AA;

[0028] Figure 5 A schematic diagram of the structure of a cyclone separator provided in an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the local structure of a cyclone separator provided in an embodiment of the present invention Figure 1 ;

[0030] Figure 7 A schematic diagram of the local structure of a cyclone separator provided in an embodiment of the present invention Figure 2 ;

[0031] Figure 8 A schematic diagram of the structure of a separator provided in an embodiment of the present invention;

[0032] Fig. 9 A side view of a cyclone separator provided by an embodiment of the present invention;

[0033] Fig.10 for Fig. 9 Cross-sectional view at BB;

[0034] Fig.11 A front view of a cyclone separator provided by an embodiment of the present invention;

[0035] Fig.12 for Fig.11 Cross-sectional view at CC. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] See also Figure 1-4 As shown, an embodiment of the present invention discloses a handheld vacuum cleaner, comprising a cyclone separator a, an air suction pipe b, a dust cup c, an air flow generating device d, and a dust chamber e connected to the cyclone separator a, wherein the cyclone separator a and the dust chamber e are arranged in the dust cup c. The air flow generating device d generates suction, and a fluid (mixed dust, dirt, and air) enters the dust cup c from the air suction pipe b, and large particles of dirt remain in the dust cup c. The dust and air enter the cyclone separator a for separation, and the separated dust enters the dust chamber e from the cyclone separator a for collection, while the clean air exits the cyclone separator a through the outlet and is discharged from the vacuum cleaner. When the cover on the dust cup c is opened, the dirt in the dust cup c and the dust in the dust chamber e are poured out.

[0038] See also Figure 1-12As shown, the cyclone separator a includes a first cyclone stage 1 and a second cyclone stage 2, the second cyclone stage 2 is located downstream of the first cyclone stage 1, and the second cyclone stage 2 includes at least a plurality of separators 21 arranged in a circle, and two adjacent separators 21 are interconnected, and a plurality of separators 21 are interconnected to form a whole. Since the plurality of separators 21 are conical cylindrical structures, a plurality of conical protrusions 22 with conical surfaces are naturally formed on the outer periphery of the second cyclone stage 2, and a secondary air duct 23 is formed between each two adjacent conical protrusions 22. The first cyclone stage 1 and the secondary air duct 23 are used to guide the incoming fluid to the separators 21 in sequence for separation.

[0039] Among them, the separator 21 is a conical cylindrical structure, which is the common shape of the separator 21. The interior of the separator 21 is called the cyclone chamber 211. The dirty fluid enters the cyclone chamber through the inlet of the separator 21 and rotates above the cyclone chamber. Under the action of centrifugal force, the dust falls to the bottom of the cyclone chamber, and the clean air is discharged from the overflow port 212 and finally discharged from the cyclone separator a.

[0040] The first cyclone stage 1 includes an air intake mesh sleeve 11 and a transition connection part 12, the transition connection part 12 is connected to a plurality of separators 21, the interior of the transition connection part 12 is connected to the plurality of separators 21, the outer surface of the transition connection part 12 protrudes outward to form a plurality of arc convexities 121, the plurality of arc convexities 121 are connected to a plurality of cone convexities 22 in a one-to-one correspondence, a primary air duct 122 is formed between two adjacent arc convexities 121, the primary air duct 122 is connected to a secondary air duct 23 in a one-to-one correspondence, and the air intake mesh sleeve 11 is sleeved on the transition connection part 12. The air intake mesh sleeve 11 plays a role in filtering large particles of dirt, retaining the large particles of dirt in the dust cup c, and small particles of dust enter the cyclone separator a.

[0041] The cyclone separator a provided in the embodiment of the present invention can guide the fluid into the separator 21 for separation in sequence through the primary air duct 122 of the first cyclone stage 1 and the secondary air duct 23 of the second cyclone stage 2, thereby accelerating the wind speed and improving the separation efficiency; the structure of the separator 21 itself is conical, and a conical protrusion 22 is naturally formed on its surface, and a secondary air duct 23 is formed between adjacent conical protrusions 22, so that the fluid can enter the separator 21 in an orderly manner without adding additional structure; the transition connection part 12 protrudes outward on its outer surface to form a plurality of arc protrusions 121, and a primary air duct 122 is formed between two adjacent arc protrusions 121, and the primary air duct 122 plays a role of preliminary guidance, so that the fluid enters the secondary air duct 23 in an orderly manner, and then after the secondary air duct 23, it can flow downstream in a more orderly manner, avoiding the gas from directly entering the outside of the separator 21 from the air inlet mesh sleeve 11, further improving the ability of the airflow to flow in an orderly manner.

[0042] The transition connection portion 12 includes a cylindrical structure, the interior of the cylindrical structure is connected to a plurality of separators 21, and the outer circumferential surface of the cylindrical structure also protrudes outward to form a plurality of arc convexities 121, and the length of the arc convexities 121 is preferably set to be consistent with the length of the cylindrical structure. The cylindrical structure is simple in design, and the interior of the cylindrical structure is connected to the separator 21, which can guide dust into the dust collection chamber e for collection.

[0043] The cyclone separator a of the handheld vacuum cleaner further comprises a multi-cone bracket 3, and a plurality of separators 21 are arranged in the multi-cone bracket 3. The multi-cone bracket 3 plays a role in supporting and fixing the plurality of separators 21, and the multi-cone bracket 3 is located outside the separator 21, that is, arranged around the outside of the separator 21, so that the secondary air duct 23 is a closed air duct, so that the fluid flows in the secondary air duct 23 in an orderly manner.

[0044] The outer periphery of the multi-cone bracket 3 forms an arc-shaped air inlet duct 31 for guiding the fluid to enter. The arc-shaped air inlet duct is connected to the air inlet mesh sleeve 11, and the fluid enters the primary air duct 122 and the secondary air duct 23 through the arc-shaped air inlet duct. Specifically, the arc-shaped air inlet duct 31 on the multi-cone bracket 3 is connected to the air outlet of the air intake channel, so that the fluid can be introduced into the cyclone separator a. The arc-shaped air inlet duct 31 is provided so that when the fluid in the air intake duct b enters the cyclone separator a, it first flows along an arc-shaped trajectory around the arc-shaped air inlet duct, that is, flows around the outer periphery of the multi-cone bracket 3 for about half a circle, and then the fluid enters the air inlet mesh sleeve 11, and the air inlet mesh sleeve 11 plays a role of preliminary filtering, so that dust and air enter the transition connection part 12.

[0045] A guide rib 4 is provided at the end of the conical protrusion 22 of two adjacent separators 21, and a guide slope 41 is provided on the guide rib. The guide slope 41 is located at the end of the secondary air duct 23, and the end of the guide slope 41 faces the entrance of the separator 21. The guide slope 41 is used to guide the fluid from the end of the secondary air duct 23 into the separator 21. Through the guide slope 41, on the one hand, the fluid in the secondary air duct 23 can be more effectively guided into the separator 21, so that the wind does not significantly slow down after reaching the guide slope 41, avoiding the generation of vortexes and reducing noise. On the other hand, the outlet area can be effectively increased, which is more conducive to the wind entering the separator 21. The guide slope 41 preferably has a set curvature, which can play a better guiding role, further reduce noise, avoid vortices, and increase wind speed.

[0046] A first accelerating air duct 5 is disposed at the inlet of the separator 21 , the wind guiding slope 41 faces the inlet of the accelerating air duct, and the cross-sectional area of ​​the inlet 51 of the first accelerating air duct 5 is larger than the cross-sectional area of ​​the outlet 52 of the first accelerating air duct 5 .

[0047] The outer shell member forming the first acceleration channel is integrally arranged with the shell member forming the separator, and the wind guide ribs are integrally arranged with the outer shell member forming the first acceleration channel. In the clockwise direction, the wind guide slope of the wind guide ribs connected to the previous outer shell member forming the first acceleration channel faces the next first acceleration channel.

[0048] The cross-sectional area of ​​the inlet of the accelerating air duct is larger than the cross-sectional area of ​​the outlet of the accelerating air duct, so that the fluid can have a higher wind speed at the outlet of the accelerating air duct than at the inlet of the accelerating air duct, so that the dust carried in the airflow obtains a greater kinetic potential energy, which is more conducive to the separation of dust from air in the separator 21. The first accelerating air duct 5 is a tangential channel, which makes it easy for the fluid to enter the separator 21.

[0049] The second cyclone stage 2 also includes a plurality of central separators 22 disposed in the middle of the plurality of separators 21, the central separators 22 are interconnected with the separators 21, a second accelerating air duct 6 is disposed at the inlet of the central separator 22, and the second accelerating air duct 6 is intersected and connected with the first accelerating air duct 5 adjacent thereto, and both have the same inlet. The central separator 22 is disposed, and the second accelerating air duct 6 of the central separator 22 shares the inlet 7 with the first accelerating air duct 5 of the separators 21 at the edge, which can ensure that the central separator 22 also has sufficient air intake and a clear air intake direction, fully utilizes the space at the center of the ground, increases the number of separators 21, and improves the separation efficiency.

[0050] Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cyclone separator for a handheld vacuum cleaner, characterized in that: The invention comprises a first cyclone stage and a second cyclone stage, wherein the second cyclone stage is located downstream of the first cyclone stage, and the second cyclone stage at least comprises a plurality of separators arranged in a circle, and two adjacent separators are connected to each other, and the plurality of separators are conical cylindrical structures, and a plurality of conical protrusions with conical surfaces are formed on the outer periphery of the second cyclone stage, and a secondary air duct is formed between each two adjacent conical protrusions, and the first cyclone stage and the secondary air duct are used to sequentially guide the incoming fluid to the separators for separation; The first cyclone stage includes a transition connection part and an air inlet mesh sleeve, the transition connection part is connected to the multiple separators, the interior of the transition connection part is communicated with the multiple separators, the outer surface of the transition connection part protrudes outward to form a plurality of arc convexities, the plurality of arc convexities are connected one-to-one with the plurality of conical convexities, a primary air duct is formed between two adjacent arc convexities, the primary air duct is communicated one-to-one with the secondary air duct, and the air inlet mesh sleeve is sleeved on the transition connection part.

2. The cyclone separator for a handheld vacuum cleaner according to claim 1, characterized in that: The transition connection portion includes a cylindrical structure, the interior of the cylindrical structure is connected to the multiple separators, and the outer peripheral surface of the cylindrical structure also protrudes outward to form a plurality of arc convexities.

3. The cyclone separator for a handheld vacuum cleaner according to claim 1, characterized in that: The cyclone separator of the handheld vacuum cleaner also includes a multi-cone bracket, and the multiple separators are arranged in the multi-cone bracket.

4. The cyclone separator for a handheld vacuum cleaner according to claim 3, characterized in that: The outer periphery of the multi-cone bracket forms an arc-shaped air inlet duct for guiding the fluid to enter, and the arc-shaped air inlet duct is connected with the air inlet mesh sleeve. The fluid enters the primary air duct and the secondary air duct through the arc-shaped air inlet duct.

5. The cyclone separator of a handheld vacuum cleaner according to claim 1, characterized in that: An air guide rib is provided at the end of the secondary air duct, and an air guide slope is provided on the air guide rib. The end of the air guide slope faces the inlet of the separator, and the air guide slope is used to guide the fluid from the end of the secondary air duct into the separator.

6. The cyclone separator of a handheld vacuum cleaner according to claim 5, characterized in that: The wind guiding inclined surface has a set curvature.

7. The cyclone separator of a handheld vacuum cleaner according to claim 5, characterized in that: A first accelerating air duct is arranged at the inlet of the separator, the wind guiding slope faces the inlet of the first accelerating air duct, and the cross-sectional area of ​​the inlet of the first accelerating air duct is larger than the cross-sectional area of ​​the outlet of the first accelerating air duct.

8. The cyclone separator of a handheld vacuum cleaner according to claim 7, characterized in that: The second cyclone stage also includes a plurality of central separators arranged among the plurality of separators, the central separators are connected to each other, a second acceleration air duct is arranged at the inlet of the central separator, and the second acceleration air duct intersects and is connected with the first acceleration air duct adjacent thereto, and both have the same inlet.

9. A handheld vacuum cleaner, characterized in that: It comprises a cyclone separator according to any one of claims 1 to 8, an air intake duct, a dust cup, an airflow generating device and a dust removal chamber connected to the cyclone separator, wherein the cyclone separator and the dust removal chamber are arranged in the dust cup.

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