WO2021056869A1 - Cyclone separator and vacuum cleaner - Google Patents

Abstract

A cyclone separator (100) and a vacuum cleaner provided with same. The cyclone separator (100) comprises an air inlet channel (216), a first separation channel (61), a second separation channel (25), and an air discharging channel (412). The first separation channel (61), the second separation channel (25), the air discharging channel (412), and the air inlet channel (216) are coaxially provided sequentially from outside to inside. The air inlet channel (216), the first separation channel (61), the second separation channel (25), and the air discharging channel (412) sequentially communicate end to end with each other. An end of the air inlet channel (216) not connected to the first separation channel (61) communicates with an external environment. An end of the air discharging channel (412) not connected to the second separation channel (25) communicates with an external environment. An airflow entering the cyclone separator (100) is twice subjected to separation by means the first separation channel (61) and the second separation channel (25), thereby achieving a good separation effect. In addition, since the first separation channel (61) and the second separation channel (25) are coaxial, and communicate end to end with each other, the cyclone separator (100) has a compact and simple structure, and occupies less space inside a vacuum cleaner, thereby allowing a vacuum cleaner to be small.

Description

Cyclone separation device and vacuum cleaner

Related application

This application claims the priority of the Chinese patent application filed on September 23, 2019, with application number 201910900081.3, titled "Vacuum Cleaner with Cyclone Separator", which is hereby incorporated by reference in its entirety.

Technical field

This application relates to the field of cleaning equipment, in particular to a cyclone separation device and a vacuum cleaner.

Background technique

With the development of society and the advancement of technology, people’s requirements for the living environment are also increasing. As a cleaning device that can collect dust and small garbage, vacuum cleaners have brought great convenience to household cleaning, so they can be used in daily life. Has become more and more widely used.

In the related art vacuum cleaners, the cyclone type separation device has replaced the dust bag type separation device for separating dust due to its good separation effect.

However, the cyclone separation device still has major shortcomings, which affects the dust separation effect and the miniaturization of the vacuum cleaner.

Summary of the invention

Based on this, it is necessary to provide a cyclone separation device and a vacuum cleaner to solve the problem that the cyclone separation device still has a large shortcoming.

A cyclone separation device, the cyclone separation device includes an air inlet channel, a first separation channel, a second separation channel, and an exhaust channel, the first separation channel, the second separation channel, the exhaust channel, and The intake passage is arranged coaxially from the outside to the inside in sequence, the intake passage, the first separation passage, the second separation passage, and the exhaust passage are communicated end to end in sequence, and the intake passage is not connected One end of the first separation channel is connected to the external environment, and one end of the exhaust channel that is not connected to the second separation channel is connected to the external environment.

In some embodiments, the cyclone separation device includes:

An external cyclone forms the air inlet passage and an isolation cavity surrounding one end of the air inlet passage; and

One end of the inner cyclone extends into the isolation cavity to form the second separation channel and the exhaust channel.

In some embodiments, the outer cyclone includes an outer cyclone sub-body and a diversion wall arranged outside one end of the outer cyclone sub-body, the air inlet passage is formed in the outer cyclone sub-body, and the guide The isolation cavity is formed between the flow wall and the main body of the outer cyclone.

In some embodiments, the outer cyclone sub-body includes a first air inlet part and a second air inlet part connected to one end of the first air inlet part, and the air inlet passage is far away from the first air inlet part. One end of the second air inlet extends to an end of the second air inlet away from the first air inlet, and the guide wall is connected from the second air inlet to one end of the first air inlet The edge extends in a direction away from the second air inlet portion, and the guide wall surrounds the first air inlet portion outside of an end close to the second air inlet portion.

In some embodiments, one end of the inner cyclone is inserted between the main body of the outer cyclone and the guide wall, and the side wall of the inner cyclone and the main body of the outer cyclone form the Exhaust passage, the second separation passage is formed between the side wall of the inner cyclone and the guide wall.

In some embodiments, the side wall of the inner cyclone is provided with an air inlet connecting the exhaust passage and the second separation channel, and the air inlet is located at the inner cyclone close to the diversion channel. One end of the wall.

In some embodiments, the cyclone separation device further includes a filter element that is installed at the air inlet and communicates with the second separation channel and the exhaust channel.

In some embodiments, the filter element is a filter mesh provided with a plurality of filter holes.

In some embodiments, the cyclone separation device further includes a dust cup, the dust cup is sleeved outside the outer cyclone, and the first dust cup is formed between the side wall of the dust cup and the guide wall. Separation channel.

In some embodiments, the cyclone separation device further includes a barrier, the barrier is sheathed at one end of the inner cyclone away from the guide wall, the barrier, the inner cyclone, and the dust The cups jointly define a dust collection cavity, and the dust collection cavity communicates with the first separation channel.

Based on the same application idea, this application also provides a vacuum cleaner including the above cyclone separation device.

In the cyclone separation device of the present application, the airflow entering the cyclone separation device is separated twice through the first separation channel and the second separation channel, and has a good separation effect. Moreover, since the first separation channel and the second separation channel are coaxially arranged and communicated end to end, the cyclone separation device has a simple and compact structure, and therefore occupies a small space inside the vacuum cleaner, thereby facilitating the miniaturization of the vacuum cleaner.

Description of the drawings

Figure 1 is a cross-sectional view of a cyclone separation device according to an embodiment of the application;

Figure 2 is a schematic structural diagram of a part of the cyclone separation device shown in Figure 1;

Figure 3 is an exploded view of the cyclone separation device shown in Figure 1.

detailed description

In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The preferred embodiments of the application are shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the specification of the application herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

As shown in Fig. 1, the present application provides a vacuum cleaner (not shown) for cleaning dust and garbage in the environment. The vacuum cleaner includes a main body, a motor, blades, and a cyclone separation device 100 installed on the main body. The motor drives the blades to rotate to generate negative pressure in the cyclone separation device 100. The dusty gas in the external environment is sucked into the cyclone separation device 100 under the action of the negative pressure. The dust in the airflow stays in the cyclone under the action of centrifugal force and gravity. In the separation device 100, the clean air flow after separating the dust flows out of the cyclone separation device 100, and finally returns to the external environment.

As shown in FIGS. 1 to 3, the cyclone separation device 100 includes an outer cyclone 20, an inner cyclone subassembly 40, and a dust cup 60. The outer cyclone 20, the inner cyclone subassembly 40, and the dust cup 60 are matched with each other to form an air inlet channel. 216, the first separation passage 61, the second separation passage 25, and the exhaust passage 412. The first separation passage 61, the second separation passage 25, the exhaust passage 412, and the intake passage 216 are arranged coaxially in sequence from the outside to the inside, and the intake passage 216, the first separation passage 61, the second separation passage 25 and the exhaust passage 412 is connected in sequence, the end of the air inlet passage 216 not connected to the first separation passage 61 is connected to the external environment, and the end of the exhaust passage 412 not connected to the second separation passage 25 is connected to the external environment.

In this way, the airflow entering the cyclone separation device 100 is separated twice through the first separation channel 61 and the second separation channel 25, which has a better separation effect. Moreover, since the first separation channel 61 and the second separation channel 25 are coaxially arranged and communicated end to end, the cyclone separation device 100 has a simple and compact structure, and therefore occupies a small space inside the vacuum cleaner, thereby facilitating the miniaturization of the vacuum cleaner.

Please refer to FIG. 1 and FIG. 3. In some embodiments, the outer cyclone 20 is substantially in the form of a revolving structure, and includes an outer cyclone main body 21 and a diversion wall 23.

The outer cyclone sub-body 21 includes a first air inlet 212 and a second air inlet 214. The second air inlet 214 is connected to one end of the first air inlet 212 and is arranged coaxially with the first air inlet 212. In addition, the outer diameter of the first air inlet portion 212 is smaller than the outer diameter of the second air inlet portion 214. The air inlet passage 216 is opened in the outer cyclone sub-body 21. The air inlet passage 216 extends from the bottom wall of the first air inlet portion 212 away from the second air inlet portion 214 to the end of the second air inlet portion 214 away from the first air inlet portion 212 The sidewalls.

The guide wall 23 extends from the edge of the second air inlet 214 connected to the first air inlet 212 in a direction away from the second air inlet 214, and the guide wall 23 surrounds the first air inlet 212 in the circumferential direction and is connected to the first air inlet 212. One end of the second air inlet 214 is outside. In this way, an isolation cavity is formed between the guide wall 23 and the first air inlet portion 212 which surrounds the air inlet passage 216 in the circumferential direction.

The internal cyclone sub-assembly 40 includes an internal cyclone 41 and a filter 43. Specifically, the inner cyclone 41 has a cylindrical structure with two ends open, one end of the inner cyclone 41 extends into the isolation cavity to form the second separation channel 25 and the exhaust channel 412, and the filter 43 is installed on the inner cyclone 41. The dust in the airflow entering the exhaust passage 412 from the second separation passage 25 is filtered.

In some embodiments, the inner cyclone 41 has a first section and a second section that are connected to each other. The first section has a cylindrical shape with equal diameters. The inner diameter of the first section is larger than the first inlet of the outer cyclone body 21. The outer diameter of the air inlet 214 is smaller than the inner diameter of the guide wall 23. The second section is in the shape of a horn whose diameter gradually increases from one end connected to the first section to the other end.

The end of the first section of the inner cyclone 41 away from the second section is inserted between the outer cyclone body 21 and the guide wall 23, and the side wall of the inner cyclone 41 (including the first and second sections) is connected to the outer cyclone. An exhaust passage 412 is formed between the sub-main bodies 21, and a second separation passage 25 is formed between at least part of the side walls of the first section of the inner cyclone 41 and the guide wall 23. A side wall of the first section of the inner cyclone 41 close to the guide wall 23 is provided with an air inlet to connect the exhaust passage 412 and the second separation passage 25. In this way, the inner cyclone 41 and the outer cyclone 20 are mated with each other to jointly define the exhaust passage 412 and the second separation passage 25.

The filter element 43 is an annular metal mesh with a plurality of filter holes. The filter element 43 is installed at the air inlet of the inner cyclone 41 and communicates with the second separation channel 25 and the exhaust channel 412. In this way, the second separation passage 25 and the exhaust passage 412 are in communication through the filter 43, and the residual dust in the second separation passage 25 cannot enter the exhaust passage 412 due to the blocking of the filter 43, while the airflow that does not carry dust can It smoothly passes through the filter 43 and enters the exhaust passage 412, thereby further improving the cleanliness of the air flow out of the cyclone separation device 100.

In some embodiments, the cyclone separation device 100 further includes a barrier 45. The barrier 45 has a ring structure and is sleeved on the end of the inner cyclone 41 away from the guide wall 23. The outer diameter of the barrier 45 gradually increases from the end close to the guide wall 23 to the end far away from the guide wall 23, thereby guiding the airflow And the movement of dust.

The dust cup 60 has a hollow cylindrical structure with one end open. The inner diameter of the dust cup 60 is larger than the outer diameter of the outer cyclone 20 so as to be sleeved outside the outer cyclone 20, between the side wall of the dust cup 60 and the guide wall 23 A first separation passage 61 is formed, one end of the first separation passage 61 is communicated with one end of the exhaust passage 412, and the other end of the first separation passage 61 is communicated with the second separation passage 25. The edge of one end of the second section of the inner cyclone 41 away from the first section abuts against the side wall of the open end of the dust cup 60 to prevent dust from leaking from the gap between the inner cyclone 41 and the dust cup 60.

In this way, the blocking member 45, the inner cyclone 41, and the dust cup 60 jointly define a dust collection chamber communicating with the first separation channel 61. The dust in the first separation channel 61 and the second separation channel 25 is deposited in the dust collection chamber under the guidance of the barrier 45, and the clean airflow flows out of the cyclone separation device 100. Moreover, under the action of the blocking member 45, the dust collection chamber is relatively closed, and there is almost no air convection, so it is difficult for the dust in the dust collection chamber to rise again.

In some embodiments, as shown in FIG. 1, the dust separation process of the cyclone separation device 100 described above is as follows:

The airflow entering the intake passage 216 flows upward along the intake passage 216 and then flows into the first separation passage 61 in a tangential direction. During the downward rotation and flow of the air flow in the first separation channel 61, dust is deposited downward in the dust collection chamber under the action of external forces such as centrifugal force and gravity, while the air flow flows upwards into the second separation channel under the action of negative pressure 25. The remaining dust in the airflow flowing in the second separation channel 25 is blocked by the filter element 43, and the remaining clean airflow passes through the filter element 43 and then flows down the exhaust channel 412 and finally exits the exhaust channel 412.

It can be understood that the “upper” and “lower” mentioned in the above dust separation process are respectively the upper and lower sides of the cyclone separation device 100 in FIG. 1.

In the above dust separation process, because the outer cyclone 20 is provided with the guide wall 23, the airflow cannot enter the exhaust channel 412 from the first separation channel 61 directly through the filter 43, but enters the second separation channel in the opposite direction. 25, the second separation channel 25 enters the exhaust channel 412 through the filter 43. In this way, the cyclone separation device 100 achieves a two-stage separation of dust and air flow, and has a high separation effect. Moreover, since the second separation passage 25 is formed between the first separation passage 61 and the exhaust passage 412 by the guide wall 23 and the inner cyclone 41, the structure of the cyclone separation device 100 is higher while having higher separation efficiency. The compactness solves the contradiction between the separation effect and the space occupied, and maintains a small volume while ensuring a high separation effect, thereby facilitating the miniaturization of the vacuum cleaner.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims (11)

A cyclone separation device, characterized in that, the cyclone separation device includes an air inlet channel (216), a first separation channel (61), a second separation channel (25) and an exhaust channel (412), the first The separation passage (61), the second separation passage (25), the exhaust passage (412), and the intake passage (216) are arranged coaxially in sequence from the outside to the inside. The intake passage (216), And the first separation passage (61), the second separation passage (25), and the exhaust passage (412) are connected end to end in sequence, and the intake passage (216) is not connected to the first separation passage ( One end of 61) is connected to the external environment, and one end of the exhaust channel (412) that is not connected to the second separation channel (25) is connected to the external environment. The cyclone separation device according to claim 1, wherein the cyclone separation device comprises: The outer cyclone (20) forms the air inlet passage (216) and an isolation cavity surrounding one end of the air inlet passage (216); and The inner cyclone (41) has one end extended into the isolation cavity to form the second separation channel (25) and the exhaust channel (412). The cyclone separation device according to claim 2, characterized in that the outer cyclone (20) comprises an outer cyclone main body (21) and a guide wall arranged outside one end of the outer cyclone main body (21) (23) The air inlet passage (216) is formed in the outer cyclone sub-body (21), and the isolation cavity is formed between the guide wall (23) and the outer cyclone sub-body (21). The cyclone separation device according to claim 3, wherein the outer cyclone sub-body (21) comprises a first air inlet (212) and a second air inlet connected to one end of the first air inlet (212). An air inlet (214), the air inlet passage (216) extends from an end of the first air inlet (212) away from the second air inlet (214) to the second air inlet (214) One end away from the first air inlet portion (212), the guide wall (23) from the edge of the second air inlet portion (214) connected to the first air inlet portion (212) facing away from the The second air inlet portion (214) extends in the direction, and the guide wall (23) surrounds the first air inlet portion (212) outside of an end close to the second air inlet portion (214). The cyclone separation device according to claim 3, characterized in that one end of the inner cyclone (41) is inserted between the outer cyclone body (21) and the guide wall (23), and the The exhaust channel (412) is formed between the side wall of the inner cyclone (41) and the main body (21) of the outer cyclone, and the side wall of the inner cyclone (41) is connected to the guide wall (23). ) Form the second separation channel (25). The cyclone separation device according to claim 5, characterized in that the side wall of the inner cyclone (41) is provided with an intake connecting the exhaust passage (412) and the second separation passage (25). An opening (414), the air inlet (414) is located at one end of the inner cyclone (41) close to the guide wall (23). The cyclone separation device according to claim 6, characterized in that, the cyclone separation device further comprises a filter element (43), the filter element (43) is installed in the air inlet (414) and communicates with the first Two separation passages (25) and the exhaust passage (412). The cyclone separation device according to claim 7, characterized in that the filter element (43) is a filter mesh with a plurality of filter holes. The cyclone separation device according to claim 3, characterized in that the cyclone separation device further comprises a dust cup (60), the dust cup (60) is sleeved outside the outer cyclone (20), and the The first separation channel (61) is formed between the side wall of the dust cup (60) and the guide wall (23). The cyclone separation device according to claim 9, characterized in that the cyclone separation device further comprises a barrier (45), the barrier (45) is sleeved on the inner cyclone (41) away from the guide At one end of the flow wall (23), the blocking member (45), the inner cyclone (41) and the dust cup (60) jointly define a dust collection chamber, and the dust collection chamber communicates with the first separation channel (61). A vacuum cleaner, characterized by comprising the cyclone separation device according to any one of claims 1 to 10.

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