CN110613399A - Dust collector, dust cup device and separating cone thereof - Google Patents

Abstract

The invention relates to a dust collector, a dust cup device and a separation cone thereof. The separating cone is provided with an inner cavity, an air inlet, an air outlet and a dust collecting port which are communicated with the inner cavity; the air inlet is positioned on the circumferential side wall of the top end of the separation cone, and the air outlet and the dust collecting opening are respectively positioned on the axial top end and the axial bottom end of the separation cone; the separating cone comprises at least two sections of reducing sections arranged along the axial direction of the separating cone, and the inner diameter of each reducing section is gradually reduced in the direction from the top end to the bottom end of the separating cone. The dust-carrying airflow enters the inner cavity of the separation cone through the air inlet to form a downward-moving rotating airflow. After the rotating airflow moving downwards enters the reducing sections, dust and dirt sequentially collide with the circumferential side walls of the reducing sections under the action of centrifugal force, so that the dust and dirt fall downwards and are collected from the gas collecting port. That is to say, carry out the dust and gas separation twice at least to the air current to be favorable to improving the dust and gas separation effect, and then avoid influencing motor life and environment.

Description

Vacuum cleaner, dust cup device and separating cone

technical field

The invention relates to the technical field of dust collection equipment, in particular to a vacuum cleaner, a dust cup device and a separating cone.

Background technique

With the continuous improvement of people's living standards, the requirements for residential sanitation and environmental sanitation are also getting higher and higher. Vacuum cleaners have gradually become an indispensable household appliance in life.

Generally, the vacuum cleaner has a dust cup device for multi-layer filtration and separation of gas and dust. The gas and dust entering the dust cup device are separated by cyclone, the dust is collected in the dust collection chamber, and the gas is discharged. However, the dust cup device in the prior art cannot separate part of the dust with small particle size, and it will be discharged with the air flow, affecting the service life of the motor and causing pollution to the environment.

Contents of the invention

Based on this, it is necessary to provide an improvement to the problem that the dust cup device in the prior art cannot separate part of the dust with a small particle size, which will be discharged with the airflow, affect the service life of the motor, and cause pollution to the environment. The vacuum cleaner, the dust cup device and the separation cone thereof with the above-mentioned defects.

A separation cone has an inner cavity and an air inlet connected to the inner cavity, an exhaust port and a dust collection port; the air inlet is located on the circumferential side wall of the top of the separation cone, and the exhaust port and the dust collection port are respectively located at the top and bottom ends of the separation cone axis;

The separation cone includes at least two diameter-reducing sections arranged along its axial direction, and the inner diameter of each diameter-reducing section gradually decreases in a direction from the top end to the bottom end of the separation cone.

In one of the embodiments, the separation cone further includes a first straight wall section, and there is a first straight wall section between every two adjacent diameter reducing sections, and the inner diameter of the first straight wall section is not Change.

In one of the embodiments, each of the reduced-diameter sections transitions smoothly to the circumferential inner wall of the adjacent first straight wall section.

In one of the embodiments, the separation cone further includes a second straight wall section located at the top of the separation cone, and the inner diameter of the second straight wall section is constant;

The air inlet is opened on the second straight wall section.

In one of the embodiments, the air inlet penetrates through the circumferential inner wall of the second straight wall section along the tangential direction.

In one of the embodiments, the cross section of the air inlet is rectangular, and the length direction of the cross section is parallel to the axial direction of the separation cone.

In one of the embodiments, the circumferential inner wall of the second straight wall section and the adjacent reduced diameter section transitions smoothly.

In one of the embodiments, the diameter-reducing section includes two sections, the second straight wall section, one of the diameter-reducing sections, the first straight wall section and the other diameter-reducing section. The separation cones are arranged sequentially from the top to the bottom.

A dust cup device, comprising a dust cup and at least one separation cone as described in any one of the above embodiments;

An air inlet is opened on the circumferential side wall of the dust cup, and the separation cone is assembled in the dust cup.

In one of the embodiments, the dust cup device further includes a filter screen cover arranged in the dust cup, and the separation cone is arranged in the filter screen cover;

A dust collection chamber is defined between the outer wall of the filter screen cover and the inner wall of the dust cup.

A vacuum cleaner, comprising the dust cup device as described in any one of the above embodiments.

In the separation cone, dust cup device and vacuum cleaner, the dust-laden airflow enters the inner cavity of the separation cone through the air inlet, and rotates along the circumference of the separation cone to form a downward-moving rotating airflow. After the rotating airflow moving downwards enters the diameter-reducing section, under the action of centrifugal force, the dust collides with the circumferential side walls of each diameter-reducing section in turn, falls downwards, and is collected from the gas collection port. At the same time, the airflow is gradually reflected by the circumferential side walls of each reducing section to form an upwardly moving swirling airflow in the middle of the inner cavity, and then from the exhaust port. In this way, the separation cone is provided with at least two variable-diameter sections, and when the dust-laden airflow passes through at least two variable-diameter sections, the dust-gas separation is carried out under the action of centrifugal force, that is, the dust-gas separation is performed on the airflow at least twice, which is beneficial to improve the dust-gas separation effect, thereby avoiding affecting the life of the motor and the environment.

Description of drawings

Fig. 1 is a schematic structural view of a dust cup device in an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of the dust cup device shown in Fig. 1;

Fig. 3 is a schematic cross-sectional structure diagram of the dust cup device shown in Fig. 1;

FIG. 4 is a schematic structural view of a separation cone of the dust cup device shown in FIG. 1 .

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention 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 there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 , an embodiment of the present invention provides a vacuum cleaner, including a main body (not shown in the figure) and a dust cup device 100 . The dust cup device 100 is connected to the main body. The main body includes a casing, a motor and an impeller. The motor and the impeller are housed in the casing. The impeller is connected to the drive shaft of the motor, and the dust cup device 100 is connected to the casing. During the dust collection process, the drive shaft of the motor rotates to drive the impeller to rotate to generate negative pressure, and the external dusty gas is sucked into the dust cup device 100 under the action of the negative pressure, and the dusty gas entering the dust cup device 100 is generated by the motor. The swirling airflow is formed under the action of the cyclone, and the separation of gas and dust is realized under the action of centrifugal force.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 together. The dust cup device 100 includes a dust cup 10 , a filter screen cover 20 and a separating cone 30 . An air inlet 12 is provided on the circumferential side wall of the dust cup 10 . The filter screen cover 20 is disposed in the dust cup 10 . The separation cone 30 is disposed inside the filter screen cover 20 . A dust collection chamber a is defined between the outer wall of the filter screen cover 20 and the inner wall of the dust cup 10 . Under the action of the negative pressure generated by the rotation of the impeller driven by the motor, the dust-laden airflow enters the dust collection chamber a through the air inlet 12, and forms a rotating airflow around the filter screen cover 20 under the cyclone action generated by the motor. The dirt collides with the inner wall of the dust cup 10 under the action of centrifugal force and falls, and the rest of the dust passes through the filter screen cover 20 with the airflow and then enters the separation cone 30, where the dust and gas are separated again in the separation cone 30. That is to say, the filter screen cover 20 separates the dust-laden airflow into the dust cup 10 at the first stage. Separation cone 30 performs second-stage dust-gas separation on the dust-laden airflow.

It should be noted that the dust cup device 100 may include one or more separation cones 30 . One or more separation cones 30 are disposed inside the filter screen cover 20 . The number of separation cones 30 can be designed according to specific conditions, and is not limited here. In the following, the dust cup device 100 includes a separation cone 30 as an example for description.

Specifically, the air intake hole 12 runs through the circumferential side wall of the dust cup 10 in a tangential direction, so that the air intake hole 12 has the effect of changing the direction of the airflow with dust, so that the airflow with dust enters the dust collection chamber a through the air intake hole 12 At this time, the direction of the dust-carrying airflow is changed to be along the tangential direction of the dust cup 10, which is conducive to the formation of a swirling airflow.

Further, the dust cup device 100 also includes a filter element 40 . The top end of the dust cup 10 has an opening 14 . The top end of the filter screen cover 20 has an opening 24 . The filter screen cover 20 is assembled in the dust cup 10 through the opening 14 of the dust cup 10 , and the peripheral edge of the top end of the filter screen cover 20 is sealed with the inner wall of the dust cup 10 to form the above-mentioned dust collection chamber a. The separation cone 30 is assembled in the filter screen cover 20 through the opening 24 at the top of the filter screen cover 20 . The filter element 40 is sealed and arranged at the opening 14 at the top of the dust cup 10 to filter the fine dust remaining in the airflow discharged from the top of the separation cone 30 . That is to say, the filter element 40 performs a third-stage gas-dust separation on the airflow. Optionally, the filter element 40 can be filter cotton. The filter element 40 is not limited to filter cotton, and other materials that can meet filtering requirements can also be used, which is not limited here.

It should be noted that the assembly method of the dust cup 10, the filter screen cover 20 and the separation cone 30 is not limited to the above-mentioned assembly method, and other methods can also be used. After the air is separated, the filter cover 20 enters the separation cone 30 for the second-stage dust-gas separation, and the airflow discharged from the top of the separation cone 30 passes through the filter element 40 for the third-stage dust-gas separation, which is not limited here.

Furthermore, the bottom end of the separation cone 30 passes through the bottom end of the filter screen cover 20 and communicates with the outside of the dust cup 10 , and the dust generated by separation by the separation cone 30 can be discharged through its bottom end.

Referring to FIG. 3 and FIG. 4 , the separation cone 30 has an inner chamber b and an air inlet 312 (see FIG. 4 ), an exhaust outlet 314 and a dust collection outlet 316 communicating with the inner chamber b. The air inlet 312 is located on the circumferential sidewall of the top end of the separation cone 30 . The exhaust port 314 and the dust collection port 316 are respectively located at the top and bottom ends of the separating cone 30 in the axial direction.

The separation cone 30 includes at least two diameter-reducing sections 32 arranged along its axial direction. The inner diameter of each diameter reducing section 32 gradually decreases in the direction from the top end to the bottom end of the separation cone 30 .

For the separation cone 30 , the dust-laden airflow enters the inner chamber b of the separation cone 30 through the air inlet 312 , and rotates along the circumference of the separation cone 30 to form a downwardly moving swirling airflow. After the downward rotating airflow enters the reducing section 32 , the dust collides with the circumferential sidewalls of each reducing section 32 under the action of centrifugal force, and then falls downward, and is collected from the dust collecting port 316 . At the same time, the airflow is gradually reflected by the circumferential side walls of each reducing section 32 to form an upwardly moving swirling airflow in the middle of the inner cavity b, and then from the exhaust port 314 . In this way, the separating cone 30 is provided with at least two variable diameter sections 32, and when the dusty airflow passes through at least two sections of variable diameter sections 32, the dust and gas are separated under the action of centrifugal force, that is, the airflow is separated from the dust and gas at least twice, which is beneficial Improve the dust and gas separation effect, thereby avoiding affecting the life of the motor and the environment.

In an embodiment of the present invention, the separation cone 30 further includes a first straight wall section 34 . There is a first straight wall section 34 between every two adjacent diameter reducing sections 32 . The inner diameter of the first straight wall section 34 is constant in the direction from the top end to the bottom end of the separation cone 30 . In this way, the dust-laden airflow enters the first straight wall section 34 adjacent to the variable diameter section 32 after passing through the variable diameter section 32. Since the inner diameter of the first straight wall section 34 remains constant, the airflow is gradually stable, and it is necessary to enter the variable diameter section again. Section 32 prepares for dust and gas separation to avoid air flow disturbance and improve the effect of dust and gas separation.

Specifically, in the embodiment, the circumferential inner wall of each variable diameter section 32 and the adjacent first straight wall section 34 is smoothly transitioned, so as to reduce the influence on the air flow and help to ensure the separation effect of dust and gas.

In one embodiment, the separating cone 30 also includes a second straight wall section 36 at the top end of the separating cone 30 . The inner diameter of the second straight wall segment 36 remains constant in the direction from the top end to the bottom end of the separation cone 30 . The air inlet 312 is opened on the second straight wall section 36 . In this way, opening the air inlet 312 on the second straight wall section 36 is conducive to forming a stable downward moving swirling airflow and improving the separation effect of dust and gas.

Further, the air inlet 312 penetrates through the circumferential inner wall of the second straight wall section 36 in a tangential direction, so as to facilitate the formation of a swirling airflow.

Further, the cross section of the air inlet 312 is rectangular, and the length direction of the cross section is parallel to the axial direction of the separation cone 30 . In this way, the airflow entering the inner chamber b is distributed along the circumferential inner wall of the second straight wall section 36, avoiding airflow turbulence, and is conducive to forming a stable swirling airflow.

Specifically in the embodiment, the circumferential inner wall of the second straight wall section 36 and the adjacent reduced-diameter section 32 transitions smoothly, so as to avoid affecting the swirling airflow.

Specifically in one embodiment, the reducing section 32 includes two sections. The second straight wall section 36, one section of the reducing section 32 among the two sections of reducing section 32, the first straight wall section 34 and the other section of reducing section 32 among the two sections of reducing sections 32 are formed from the top of the separating cone 30 to the bottom. The ends are arranged in sequence. In this way, the dust-gas separation is performed sequentially on the dust-laden airflow entering the inner chamber b through the two diameter-reducing sections 32 , which is beneficial to improve the dust-gas separation effect.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. 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, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (11)

1. a separation cone, characterized in that, has an inner cavity (b) and an air inlet (312), an exhaust port (314) and a dust collection port (316) communicating with the inner cavity (b); The air inlet (312) is positioned at the circumferential sidewall of the top of the separating cone (100), and the exhaust port (314) and the dust collecting port (316) are respectively positioned at the axial direction of the separating cone (100). top and bottom of The separation cone (100) includes at least two diameter-reducing sections (32) arranged along its axial direction, and each of the diameter-reduction sections (32) is directed from the top end of the separation cone (100) to the bottom end. The inner diameter gradually decreases. 2. The separation cone according to claim 1, characterized in that, the separation cone (100) also comprises a first straight wall section (34), and there is a gap between every two adjacent sections of the variable diameter section (32). The first straight wall section (34), the inner diameter of the first straight wall section (34) is constant. 3. The separation cone according to claim 2, characterized in that each of the variable diameter sections (32) and the circumferential inner wall of the adjacent first straight wall section (34) make a smooth transition. 4. separation cone according to claim 2, is characterized in that, described separation cone (100) also comprises the second straight wall section (36) that is positioned at described separation cone (100) top, and described second straight wall The internal diameter of section (36) is constant; The air inlet (312) is opened on the second straight wall section (36). 5. The separation cone according to claim 4, characterized in that, the air inlet (312) penetrates through the circumferential inner wall of the second straight wall section (36) in a tangential direction. 6. separation cone according to claim 5, is characterized in that, the cross section of described air inlet (312) is rectangular, and the longitudinal direction of described cross section is parallel to the axial direction of described separation cone (100) . 7. The separation cone according to claim 4, characterized in that, the second straight wall section (36) and the adjacent diameter-reducing section (32) transition smoothly to the circumferential inner wall. 8. separation cone according to claim 4, is characterized in that, described variable diameter section (32) comprises two sections, described second straight wall section (36), wherein a section of described variable diameter section (32), The first straight wall section (34) and the other diameter reducing section (32) are arranged sequentially from the top end to the bottom end of the separation cone (100). 9. A dust cup device, characterized in that it comprises a dust cup (10) and at least one separating cone (100) according to any one of claims 1 to 8; An air inlet (12) is opened on the circumferential side wall of the dust cup (10), and the separation cone (100) is assembled in the dust cup (10). 10. The dust cup device according to claim 9, characterized in that, the dust cup device further comprises a filter screen cover (20) arranged in the dust cup (10), and the separating cone (30) is arranged in Inside the filter screen cover (20); A dust collection cavity (a) is defined between the outer wall of the filter screen cover (20) and the inner wall of the dust cup (10). 11. A vacuum cleaner, characterized by comprising the dust cup device according to claim 9 or 10.