WO2021047098A1

WO2021047098A1 - Vacuum cleaner and cyclone separating device

Info

Publication number: WO2021047098A1
Application number: PCT/CN2019/126802
Authority: WO
Inventors: 颜勇; 黄月林; 李吉; 任敏; 王朝晖; 蔡木城; 李锦坤; 廖泓斌; 王德旭; 陈勇; 陈闪毅
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-09-11
Filing date: 2019-12-20
Publication date: 2021-03-18
Also published as: CN110558895A

Abstract

A vacuum cleaner and a cyclone separating device (100). The cyclone separating device (100) comprises: a cyclone separator (10) which is provided with a cyclone separating chamber (11) allowing an airflow to spirally rotate around a central axis, and an air inlet (13), an exhaust port (15) and a dust discharge port (17) which are all in communication with the cyclone separating chamber (11); and a flow collecting member (30) and a dust collecting member (50) which are respectively provided at two opposite ends of the cyclone separator (10), the flow collecting member (30) having a flow collecting chamber (32) in communication with the exhaust port (15), and the dust collecting member (50) having a dust collecting chamber (52) in communication with the dust discharge port (17). When the airflow flows within the cyclone separating chamber (11), a part of the airflow spirally descends together with the dust directly and enters the dust collecting chamber (52) from the dust discharge port (17), while the other part of the airflow gradually gathers towards the central axis of the cyclone separating chamber (11) during the spirally descending process and then enters the flow collecting chamber (32) from the exhaust port (15) after ascending from the center, such that the air pressure in the flow collecting chamber (32) is lower than the air pressure in the dust collecting chamber (52). An air suction pipe (70) is in communication with the dust collecting chamber (52) and the flow collecting chamber (32), so that the airflow flows from the dust collecting chamber (52) to the flow collecting chamber (32) under the effect of differential pressure, so as to automatically suction air from the dust collecting chamber (52), thereby improving the air-dust separation rate.

Description

Vacuum cleaner and cyclone separation device

Related application

This application claims the priority of the Chinese patent application filed on September 11, 2019, with the application number 201910858911.0, titled "Vacuum Cleaner and Cyclone Separator", which is hereby incorporated by reference in its entirety.

Technical field

This application relates to the field of dust collection technology, in particular to vacuum cleaners and cyclones.

Background technique

With the improvement of people's living standards, the requirements for the surrounding clean environment are getting higher and higher. Especially in household cleaning, it is necessary to thoroughly clean the dirt inside the house, but the traditional way cannot meet the indoor cleanliness. Moreover, it is time-consuming and labor-intensive, and the vacuum cleaner can effectively and quickly clean indoor stains and dirt to meet people's requirements. Therefore, it is widely used by people.

Generally, in a vacuum cleaner, the dust-inhaled air is separated by a separator, so that the dust enters the dust collection chamber, and the clean air after the separation of the dust is discharged from the vacuum cleaner to complete the dust collection work. However, the separator is not effective in separating dust and air.

Summary of the invention

Based on this, the present application provides a cyclone separation device that improves the separation effect of gas and dust.

A cyclone separation device, including:

The cyclone separation body has a cyclone separation chamber that allows the airflow to spirally rotate around the central axis, and an air inlet, an exhaust port, and a dust exhaust port that are all communicated with the cyclone separation chamber, and the air inlet is located in the cyclone separation chamber. The tangential direction of the outer circumference of the cavity, the exhaust port and the dust exhaust port are respectively located at opposite ends of the cyclone separation cavity in the axial direction;

The collecting piece and the dust collecting piece are respectively arranged at opposite ends of the cyclone separation body, and the collecting piece has a collecting cavity communicating with the exhaust port, and the dust collecting piece is provided with the exhaust port. Dust collection chamber connected to the dust port; and

An air suction pipe is connected between the dust collecting part and the current collecting part, and communicates with the dust collecting cavity and the collecting cavity.

In an embodiment, the air pressure in the dust collecting chamber is greater than the air pressure in the collecting chamber, and a suction air passage is formed in the air suction pipe from the dust collecting chamber to the collecting chamber.

In an embodiment, the dust collecting part is provided with a first air extraction port on the side facing the current collecting part, and the second air extraction opening is opened on the side of the dust collecting part facing the dust collecting part, and the air extraction pipe Connected between the first suction port and the second suction port.

In an embodiment, the cyclone separator includes a cylinder with a cylindrical cavity and a cone with a tapered cavity;

The cone is coaxially connected with the cylinder, the cylindrical cavity and the tapered cavity communicate with each other to form the cyclone separation cavity, and the air inlet is located in the tangential direction of the outer circumference of the cylindrical cavity.

In an embodiment, the end of the tapered cavity away from the cylindrical cavity forms the dust exhaust port, the side of the cylindrical cavity away from the tapered cavity forms the exhaust port, and the exhaust port The air port is located on the axis of the cylinder.

In an embodiment, the cyclone separation body further includes an exhaust core tube, the exhaust core tube is provided at the exhaust port of the cylinder and is connected to the cylinder extending in the axial direction of the cylinder. Between the cylinder and the collector, and communicates with the exhaust port and the collector cavity.

In one embodiment, the cyclone separation body includes a plurality of cyclone separation bodies connected between the current collecting part and the dust collecting part, and each of the cyclone separation bodies is The opposite ends of the cyclone separation cavity are respectively communicated with the flow collection cavity and the dust collection cavity.

In an embodiment, the plurality of cyclone separators are arranged at intervals along a circle, and the air suction pipe is arranged at the center of the circle.

In one embodiment, it further includes a flow regulating valve, which is provided on the air extraction pipe and is used to adjust the air flow in the air extraction pipe.

In one embodiment, the air flow in the suction pipe is 8%-11% of the air flow in the cyclone separation chamber.

The application also provides a vacuum cleaner including the above cyclone separation device.

In the above cyclone separation device, when the airflow flows in the cyclone separation chamber, a part of the airflow directly spirals down with the dust and enters the dust collection chamber from the dust outlet, while the other part of the airflow spirally descends gradually toward the center axis of the cyclone separation chamber. After going up from the center and then entering the manifold from the exhaust port, spiraling downward and then going up from the central axis and then entering the manifold, there will be pressure loss and vortex pressure loss along the way, which will make the air pressure in the manifold Lower than the air pressure in the dust chamber. Therefore, on the basis of this phenomenon, the air suction pipe is connected to the dust collecting chamber and the collecting chamber, and the air flow will flow from the dust collecting chamber to the collecting chamber under the action of the pressure difference. Dust separation rate, no need for external air extraction device, simple structure.

Description of the drawings

Figure 1 is a schematic structural diagram of a cyclone separation device in an embodiment of the application;

Figure 2 is an exploded schematic diagram of the cyclone separation device shown in Figure 1;

Figure 3 is a schematic structural diagram of a cyclone separation device in another embodiment of the application.

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.

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 terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is 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 cyclone separation device 100, which can be assembled in a vacuum cleaner, and when dust-laden air enters the cyclone separator, the dust and air are separated.

The cyclone separation device 100 includes a cyclone separation body 10, which has a cyclone separation chamber 11 that allows airflow to spirally rotate around a central axis, and an air inlet 13, an exhaust port 15 and a dust exhaust port that are all communicated with the cyclone separation chamber 11 17. The air inlet 13 is located in the tangential direction of the outer circumference of the cyclone separation chamber 11, and the air outlet 15 and the dust discharge opening 17 are respectively located at opposite ends of the cyclone separation chamber 11 in the axial direction. The airflow with dust enters the cyclone separation chamber 11 from the air inlet 13 in a tangential direction, and then spirally rotates around the central axis toward the dust outlet 17. During the rotation, because the dust is heavy, the centrifugal force of the rotation is large, and it will hit To the inner wall of the rotating separation chamber, and then leave from the dust outlet 17 due to its own gravity and downward airflow. At the same time, when the downward airflow is spirally running downwards, part of the downward airflow gradually moves to the center of the spiral and is discharged from the exhaust port 15 upward along the central axis, so that dust is discharged from the dust exhaust port 17, and clean air is discharged from the exhaust port 15. , In order to realize the separation of gas and dust.

The cyclone separation device 100 also includes a current collecting member 30, a dust collecting member 50, and an exhaust pipe 70. The current collecting member 30 and the dust collecting member 50 are respectively arranged at opposite ends of the cyclone separator 10, and the current collecting member 30 is connected to the exhaust The collecting chamber 32 connected to the port 15 can enter the collecting chamber 32 from the exhaust port 15 when the clean air separated from dust flows upwards, and then be discharged to the outside; the dust collecting member 50 has a dust collecting part connected with the dust discharge port 17 In the cavity 52, dust and part of the downward air flow enter the dust collection cavity 52 from the dust outlet 17 and gather in the dust collection cavity 52.

Moreover, the inventor found that when the airflow flows in the cyclone separation chamber 11, a part of the airflow directly spirals down with dust and enters the dust collection chamber 52 from the dust outlet 17, while another part of the airflow spirally descends gradually to the cyclone separation chamber 11. The airflow that gathers from the center axis of the center axis and moves upward from the center and then enters the manifold 32 from the exhaust port 15, and then spirally descends from the central axis and then enters the manifold 32. There will be pressure loss and vortex pressure loss along the way. The air pressure in the collecting chamber 32 will be lower than the air pressure in the dust collecting chamber 52. Therefore, on the basis of this phenomenon, the suction pipe 70 is connected between the dust collecting member 50 and the collecting member 30, and is connected to the dust collecting cavity 52 and the collecting cavity 32, and the airflow will be removed from the dust collecting under the action of the pressure difference. The cavity 52 flows to the collecting cavity 32. In this way, the dust collecting cavity 52 is automatically evacuated, which can improve the air-dust separation rate, and does not require an external air extraction device, and the structure is simple.

In some embodiments, the suction pipe 70 is formed with a suction air passage from the dust collecting chamber 52 to the collecting cavity 32, so that a part of the air flow in the dust collecting cavity 52 flows to the collecting cavity 32 under the action of the pressure difference, and the dust collecting The cavity 52 is automatically evacuated to increase the air-dust separation rate in the dust-collecting cavity 52.

In some embodiments, the air flow in the suction pipe 70 is 8%-11% of the air flow in the cyclone separation chamber 11. When the air flow in the air extraction pipe 70 is too small and the air extraction rate is too small, the improvement of the air and dust separation effect is small. When the air flow in the air extraction pipe 70 is too large and the air extraction rate is too large, the air and dust separation effect cannot be improved. , And will disturb the dust chamber 52. In some embodiments, when the air flow in the suction pipe 70 is 10% of the air flow in the cyclone separation chamber 11, the air-dust separation effect is the best.

In some embodiments, the cyclone separation device 100 further includes a flow regulating valve (not shown). The flow regulating valve is arranged on the air extraction pipe 70 and is used to adjust the air flow in the air extraction pipe 70 so as to reduce the air flow in the air extraction pipe 70. Adjust to a suitable range. In other embodiments, it is allowed to control the wind resistance at both ends of the suction pipe 70 by changing the pipe diameter, length, and winding manner of the suction pipe 70, so as to match the suction pipe 70 with an appropriate air flow.

As shown in FIG. 2, in some embodiments, the cyclone separator 10 includes a cylindrical body 12 with a cylindrical cavity and a cone 14 with a cone-shaped cavity. The cone 14 and the cylindrical body 12 are coaxially connected, and the cylindrical cavity and the cone are coaxially connected. The cavities communicate with each other to form a cyclone separation cavity 11, the air inlet 13 is located in the tangential direction of the outer circumference of the cylindrical cavity, the end of the tapered cavity away from the cylindrical cavity forms a dust exhaust port 17, and the side of the cylindrical cavity away from the tapered cavity forms an exhaust port 15 , And the exhaust port 15 is located on the axis of the cylinder 12. In this way, the airflow enters the cylindrical cavity from the tangential direction of the cylinder, and then spirally descends through the cylindrical cavity and the conical cavity, and the diameter of the conical cavity gradually decreases in the direction from the exhaust port 15 to the dust exhaust port 17, so that the dust gradually decreases. Gather and discharge to the dust outlet 17. At the same time, part of the spirally descending air flow gradually gathers toward the central axis of the cyclone separation cavity 11 and moves upward to the cylindrical cavity, and then is discharged from the exhaust port 15 located on the axis of the cylindrical body.

The cyclone separation body 10 also includes an exhaust core tube 16 which is arranged at the exhaust port 15 of the cylinder 12 and is connected between the cylinder 12 and the collector 30 along the axial direction of the cylinder 12, The exhaust port 15 is connected with the collecting cavity 32, and the air suction core pipe 16 is used to guide the air flow collected at the central axis of the pipe body to the collecting cavity 32, so that the clean air without dust is discharged from the suction core pipe 16 by the cyclone. Cavity 11.

The dust collecting member 50 and the current collecting member 30 respectively correspond to the dust exhaust port 17 and the exhaust port 15, and are arranged opposite to the two ends of the spiral separating member. Moreover, a first suction port 54 is opened on the side of the dust collecting member 50 facing the collecting member 30, a second suction opening 34 is opened on the side of the collecting member 30 facing the dust collecting member 50, and the suction pipe 70 is connected to the first suction opening. Between 54 and the second suction port 34, part of the air flow in the dust collecting chamber 52 flows autonomously from the suction pipe 70 to the collecting chamber 32 under the action of the pressure difference. In addition, the side of the dust collecting member 50 facing the current collecting member 30 is the top of the dust collecting member 50, and a first air extraction port 54 is opened on the top of the dust collecting member 50, so that the first air extraction port 54 avoids the accumulation of dust in the dust collecting member 50. The bottom part prevents the air flow from disturbing the dust at the bottom of the dust collecting chamber 52 during air extraction, and avoids dust from being brought up during air extraction, so that the air extraction does not affect the deposition of dust.

As shown in FIG. 3, in some embodiments, the cyclone separation body 10 includes a plurality of cyclone separation bodies 10 connected between the collecting member 30 and the dust collecting member 50, and each cyclone separation body 10 is separated from each other. The opposite ends of the cavity 11 are respectively communicated with the collecting cavity 32 and the dust collecting cavity 52. It can be understood that a plurality of cyclone separation bodies 10 are connected in parallel between the collection cavity 32 and the dust collection chamber 52, the dust discharge ports 17 of the plurality of cyclone separation bodies 10 are all connected to the dust collection chamber 52, and the plurality of cyclone separation chambers 11 The exhaust ports 15 are all communicated with the collecting cavity 32, and a plurality of cyclone separators 10 are connected in parallel between the dust collecting member 50 and the current collecting member 30, so that the plurality of cyclone separators 10 can perform gas and dust separation work and improve the separation efficiency. Moreover, only one suction pipe 70 is needed to enable the airflow in the dust collecting chamber 52 to flow to the collecting chamber 32 under the action of the pressure difference, thereby improving the air-dust separation effect of the plurality of cyclone separators 10 communicating with the dust collecting chamber 52 .

In some embodiments, a plurality of cyclone separators 10 are arranged at intervals along a circumference, and the exhaust pipe 70 is arranged at the center of the circumference, so that the exhaust pipe 70 uniformly exhausts the multiple cyclone separators 10 to ensure that the multiple cyclone separators 10 are uniformly exhausted. 10 can improve the effect of gas and dust separation. Understandably, in some other embodiments, the multiple cyclone separators 10 are arranged in other shapes, and the location and number of the suction pipes 70 can also be adjusted adaptively, and the multiple cyclone separators 10 can be improved by the suction pipe 70. The air-dust separation effect is sufficient.

In an embodiment of the present application, there is also provided a vacuum cleaner, including the above-mentioned cyclone separation device 100, which has a better gas and dust separation effect.

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 noted 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

A cyclone separation device, characterized in that it comprises:

The cyclone separation body (10) has a cyclone separation chamber (11) that allows the airflow to spirally rotate around the central axis, and an air inlet (13) and an exhaust port (15) that are both in communication with the cyclone separation chamber (11) And the dust exhaust port (17), the air inlet (13) is located in the tangential direction of the outer circumference of the cyclone separation chamber (11), the exhaust port (15) and the dust exhaust port (17) are respectively located at the The opposite ends of the cyclone separation chamber (11) in the axial direction;

The collecting piece (30) and the dust collecting piece (50) are respectively arranged at opposite ends of the cyclone separation body (10), and the collecting piece (30) is connected with the exhaust port (15) The collecting cavity (32) of the dust collecting member (50) has a dust collecting cavity (52) communicating with the dust outlet (17); and

An air suction pipe (70) is connected between the dust collecting piece (50) and the flow collecting piece (30), and communicates with the dust collecting cavity (52) and the collecting cavity (32).
The cyclone separation device according to claim 1, wherein the air pressure in the dust collecting chamber (52) is greater than the air pressure in the collecting chamber (32), and the exhaust pipe (70) is formed by The dust collecting cavity (52) flows to the suction air passage of the collecting cavity (32).
The cyclone separation device according to claim 1, characterized in that the dust collecting part (50) is provided with a first air extraction port (54) on the side facing the collecting part (30), and the collecting part ( 30) A second suction port (34) is opened on the side facing the dust collector (50), and the suction pipe (70) is connected to the first suction port (54) and the second suction port (34). )between.
The cyclone separation device according to claim 1, characterized in that the cyclone separation body (10) comprises a cylindrical body (12) with a cylindrical cavity and a cone (14) with a conical cavity;

The cone (14) is coaxially connected with the cylinder (12), the columnar cavity and the tapered cavity communicate with each other to form the cyclone separation cavity (11), and the air inlet (13) is located The tangential direction of the outer circumference of the columnar cavity is upward.
The cyclone separation device according to claim 4, wherein the end of the tapered cavity away from the cylindrical cavity forms the dust exhaust port (17), and one side of the cylindrical cavity away from the tapered cavity The exhaust port (15) is formed, and the exhaust port (15) is located on the axis of the cylinder (12).
The cyclone separation device according to claim 5, characterized in that the cyclone separation body (10) further comprises an exhaust core tube (16), and the exhaust core tube (16) is arranged on the cylinder (12). ) Is connected between the cylinder (12) and the collector (30) at the exhaust port (15) and along the axial extension of the cylinder (12), and communicates with the exhaust An air port (15) and the manifold (32).
The cyclone separation device according to claim 1, wherein the cyclone separation body (10) comprises a plurality of cyclone separation bodies (10) connected to the collector (30) and the Between the dust collection parts (50), the opposite ends of each cyclone separation cavity (11) of each cyclone separation body (10) are respectively connected to the collection cavity (32) and the dust collection cavity (52) Connected.
The cyclone separation device according to claim 7, wherein the plurality of cyclone separation bodies (10) are arranged at intervals along a circumference, and the suction pipe (70) is arranged at the center of the circumference.
The cyclone separation device according to any one of claims 1-8, further comprising a flow regulating valve, the flow regulating valve is arranged on the suction pipe (70) for adjusting the suction pipe ( 70) Air flow rate within.
The cyclone separation device according to any one of claims 1-8, wherein the air flow in the suction pipe (70) is 8%-11% of the air flow in the cyclone separation chamber (11).
A vacuum cleaner, characterized by comprising the cyclone separation device (100) according to any one of claims 1-10.