CN110664318A - Vacuum cleaner, dust cup device and its separation cone - Google Patents

Abstract

The invention relates to a vacuum cleaner, a dust cup device and a separation cone thereof. The separation cone includes: a separation cone body with an inner cavity, an air inlet, an air outlet and a dust collection port; the air inlet is located on the circumferential side wall of the top of the separation cone body, and the air outlet and the dust collection port are respectively located in the separation cone. The top and bottom ends of the cone body in the axial direction; the reflection screen is matched in the inner cavity; there is a gap between the reflection screen and the circumferential side wall of the inner cavity, and a plurality of air flow holes are opened. In the downward airflow, the dust-laden airflow near the circumferential side wall of the inner cavity moves downward through the gap between the reflective screen and the circumferential side wall of the inner cavity. At the same time, the dust-free airflow near the middle of the inner cavity in the downward-moving airflow moves upward through the reflection of the reflective screen, and then is discharged from the exhaust port, which does not affect the downward-moving airflow and avoids dust in the downward-moving airflow. The dirt is brought out of the exhaust port by the upward moving airflow, which improves the separation effect of air and dust and reduces the impact on the life of the motor and the environment.

Description

Vacuum cleaner, dust cup device and its separation cone

technical field

The invention relates to the technical field of dust collection equipment, in particular to a dust collector, a dust cup device and a separation cone thereof.

Background technique

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

Generally, a vacuum cleaner has a dust cup device that filters and separates gas and dust in multiple layers. The gas and dust entering the dust cup device are separated by a cyclone, and the dust and dirt are collected in a dust collecting chamber, and the gas is discharged. However, in the dust cup device in the prior art, some dusts with small particle size cannot be separated, and they will be discharged with the airflow, affecting the service life of the motor and causing pollution to the environment.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an improved solution to the problem that the dust cup device in the prior art cannot separate some dusts with small particle size, and will be discharged with the airflow, affecting the service life of the motor and causing pollution to the environment. The above-mentioned defective vacuum cleaner, dust cup device and its separation cone.

A separation cone, comprising:

The separation cone body has an inner cavity and an air inlet, an exhaust port and a dust collection port communicating with the inner cavity; the air inlet is located on the circumferential side wall of the top end of the separation cone body, and the exhaust port and the dust collecting ports are respectively located at the top and bottom ends of the separating cone body in the axial direction; and

a reflection screen, which is fitted in the inner cavity and divides the inner cavity into a top cavity and a bottom cavity; there is a gap between the reflection screen and the circumferential side wall of the inner cavity, and is provided with A plurality of air flow holes communicating with the top chamber and the bottom chamber.

In one embodiment, the reflection screen is in the shape of a cone, and the cone top of the reflection screen faces the top of the separation cone body.

In one embodiment, the reflective screen is conical.

In one embodiment, the separation cone body includes at least one diffusion section located between the reflective screen and the air inlet, and each diffusion section is in a direction from the top end of the separation cone body to the bottom end thereof The inner diameter gradually increases.

In one embodiment, the separating cone body further comprises at least one necked-down section located between the reflecting screen and the dust collecting port, each of the necked-down sections pointing from the top end of the separating cone body The inner diameter gradually decreases in the direction of its bottom end.

In one embodiment, the separating cone body further includes a buffer section located between the reflective screen and the necking section, and the inner diameter of the buffer section is constant.

In one embodiment, a plurality of the airflow holes are symmetrically distributed with respect to the central axis of the reflective screen.

In one embodiment, at least two connecting portions are protruded from the circumferential edge of the reflective screen, and one end of each of the connecting portions away from the reflective screen is fixedly connected to the circumferential side wall of the inner cavity.

In one embodiment, the air inlet tangentially penetrates the circumferential sidewall of the conical cavity.

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

The circumferential side wall of the dust cup is provided with an air intake hole that communicates with the dust cup, and the separation cone is arranged in the dust cup.

In one embodiment, it also includes a filter screen cover, the filter screen cover is disposed in the dust cup, and the separation cone is disposed in the filter screen cover;

A dust collecting cavity 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 of the above embodiments.

The above-mentioned separation cone, dust cup device and vacuum cleaner, due to the setting of the reflective screen, the dust-carrying airflow close to the circumferential side wall of the inner cavity in the downward moving air flow in the inner cavity of the separation cone body passes through the reflective screen and the circumferential side wall of the inner cavity. The gap between them continues to move downward, and the dust-free airflow near the middle of the inner cavity in the downward moving airflow moves upward through the reflection of the reflective screen, and then is discharged from the exhaust port, which does not affect the airflow that continues to move downward. The dust in the downward-moving airflow is brought out of the dust outlet by the upward-moving airflow, which improves the separation effect of air and dust and reduces the impact on the life of the motor and the environment.

Description of drawings

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

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

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

FIG. 4 is a schematic cross-sectional structural diagram of the separation cone of the dust cup device shown in FIG. 1 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

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 intervening elements may also be present. 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 illustrative purposes 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 art to which this invention belongs. 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) 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 accommodated 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 vacuuming process, the drive shaft of the motor rotates to drive the impeller to rotate to generate negative pressure, and the external dust-laden gas is sucked into the dust cup device 100 under the action of the negative pressure, and the dust-laden gas entering the dust cup device 100 is generated by the motor. Under the action of the cyclone, a rotating airflow is formed, and the separation of gas and dust is realized under the action of centrifugal force.

Please refer to FIGS. 1 , 2 and 3 together. The dust cup device 100 includes a dust cup 10 , a filter cover 20 and a separation cone 30 . Air inlet holes 12 are provided on the circumferential side wall of the dust cup 10 . The filter screen cover 20 is arranged in the dust cup 10 . The separation cone 30 is arranged in the filter screen cover 20 . A dust collecting chamber a is defined between the outer wall of the filter 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 from the air inlet 12, and the cyclone generated by the motor forms a rotating airflow that rotates around the filter screen cover 20. Under the action of centrifugal force, the dirt collides with the inner wall of the dust cup 10 and falls, and the remaining dirt and dirt pass through the filter cover 20 and enter the separation cone 30 with the airflow, and the dust and gas are separated again in the separation cone 30 . That is to say, the filter cover 20 performs first-stage dust-gas separation on the dust-laden airflow entering the dust cup 10 . The separation cone 30 performs second-stage dust-gas separation on the dust-laden airflow.

Specifically, the air inlet hole 12 penetrates the circumferential side wall of the dust cup 10 tangentially, so that the air inlet hole 12 has the function of changing the direction of the dust-laden airflow, so that the dust-laden air flow enters the dust collection chamber a through the air inlet hole 12 When , the direction of the dust-laden airflow is changed to be along the tangential direction of the dust cup 10 , which is beneficial to the formation of a swirling airflow.

Further, the dust cup device 100 further includes a filter element 40 . The top end of the dust cup 10 has an opening 14 . The top end of the filter cover 20 has an opening 24 . The filter 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 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 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, the filter element 40 performs the 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 the use of filter cotton, and other materials that can meet the filtering requirements can also be used, which is not limited here.

Further, 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 so as to collect the dust and dirt discharged from the bottom end of the separation cone 30 .

Please refer to FIGS. 3 and 4 , the separation cone 30 includes a separation cone body 32 and a reflective screen 34 . The separation cone body 32 has an inner cavity b and an air inlet 322 , an exhaust outlet 324 and a dust collecting port communicating with the inner cavity b. mouth 326. The air inlet 322 is located on the circumferential side wall of the top end 321 of the separation cone body 32 . The exhaust port 324 and the dust collection port 326 are respectively located at the top end 321 and the bottom end 323 of the separation cone body 32 in the axial direction. The reflective screen 34 is fitted in the inner cavity b, and divides the inner cavity b into a top chamber c and a bottom chamber d. There is a gap h between the reflection screen 34 and the circumferential side wall of the inner cavity b, and a plurality of air flow holes are opened to communicate with the top cavity c and the bottom cavity d.

The above-mentioned separation cone 30 is provided with a reflective screen 34, and the dust-laden airflow enters the inner cavity b of the separation cone body 32 through the air inlet 322 and rotates around the axial direction of the separation cone body 32 to form a downward moving swirling air flow. Under the action of centrifugal force and gravity, the dust gradually gathers downward. After the downward-moving airflow encounters the reflective screen 34, a part of the airflow is reflected to form an upward-moving airflow, which is then discharged from the exhaust port 324 at the top of the separating cone body 32; another part of the airflow and dust pass through the reflective screen 34 and the inner cavity. The gap h between the circumferential sidewalls of b is downward. Under the action of centrifugal force, the dust and dirt collide with the circumferential sidewall of the inner cavity b and then fall and enter the dust collection port 326 to be collected, and the airflow passes through the reflective screen 34. The plurality of airflow holes are discharged upward through the exhaust port 324 .

In this way, the dust-laden airflow in the downward airflow in the inner cavity b of the separation cone body 32 close to the circumferential side wall of the inner cavity b continues downward through the gap h between the reflective screen 34 and the circumferential side wall of the inner cavity b In the downward moving airflow, the dust-free airflow near the middle of the inner cavity b is reflected by the reflective screen 34 and moves upward, and then is discharged from the exhaust port 324, which does not affect the airflow that continues to move downward, and avoids downward movement. The dust and dirt in the air flow is carried out of the exhaust port 324 by the upward moving air flow, which improves the air-dust separation effect and reduces the impact on the life of the motor and the environment.

Specifically, the air inlet 322 penetrates the circumferential side wall of the inner cavity b in the tangential direction, so that the air inlet 322 has the function of changing the direction of the dust-laden airflow, so that when the dust-laden airflow enters the inner cavity b through the air inlet 322 , the direction of the dust-laden airflow is changed to be along the tangential direction of the circumferential side wall of the inner cavity b, which is conducive to the formation of a swirling airflow.

In the embodiment of the present invention, the reflection screen 34 is in the shape of a cone, and the cone top of the reflection screen 34 faces the top 321 of the separation cone body 32 . Preferably, the reflective screen 34 has a conical shape. In this way, it is beneficial to realize the reflection of the air flow, and plays the role of guiding the dust and dirt, and further makes the dust and dirt gather on the circumferential side wall of the inner cavity b, and improves the gas and dust separation effect.

In the embodiment of the present invention, the plurality of airflow holes on the reflective screen 34 are symmetrically distributed with respect to the central axis of the reflective screen 34, so that the airflow in the inner cavity b is relatively uniform in the circumferential direction of the inner cavity b.

In the embodiment of the present invention, at least two connecting portions 342 are protruded from the circumferential edge of the reflective screen 34, and one end of each connecting portion 342 away from the reflective screen 34 is fixedly connected to the circumferential sidewall of the inner cavity b, so as to reflect the The screen 34 is fixedly attached to the circumferential side wall of the inner cavity b. At least two connecting portions 342 are arranged at intervals around the circumference of the reflective screen 34, and a channel for the downward movement of the dust-laden airflow to continue moving downward through the reflective screen 34 is defined between the two adjacent connecting portions 342 (that is, the above-mentioned The gap h) between the reflective screen 34 and the circumferential side wall of the inner cavity b.

It can be understood that the connecting portion 342 can be integrally formed with the reflective screen 34 . The connecting portion 342 and the circumferential side wall of the inner cavity b can be fixed by, for example, welding, snap-fitting, threaded fastener fastening, integral molding, etc., which are not limited herein.

In the embodiment of the present invention, the separation cone body 32 includes at least one diffusion section 32a located between the reflection screen 34 and the air inlet 322 . The inner diameter gradually increases in the direction. In this way, the disposition of the diffusion section 32a enables the dust-laden airflow entering the inner cavity b from the air inlet 322 to rapidly form a downward moving swirling airflow. Under the dual action of gravity and centrifugal force, the dust and dirt move toward the circumferential side of the inner cavity b. The walls move closer together and move downwards, so as to ensure that the dust-laden airflow close to the circumferential side wall of the inner cavity b enters the bottom chamber d through the gap h between the reflective screen 34 and the circumferential side wall of the inner cavity b, and at the same time close to the inner cavity The dust-free air flow in the middle of b is reflected by the reflective screen 34 and moves upward, and is discharged from the exhaust port 324, which further enhances the effect of gas and dust separation. In the embodiment shown in FIG. 4 , the separation cone body 32 only includes a section of the diffusion section 32a. The diffusing section 32a is the area between the separation cone body 32 where the air inlet 322 is provided and where the reflecting screen 34 is provided.

Specifically in the embodiment, the separating cone body 32 further includes at least one necked section 32b located between the reflective screen 34 and the dust collecting port 326 , and each necked section 32b is directed from the top end 321 of the separating cone body 32 to its bottom end The inner diameter gradually decreases in the direction of 323. In this way, since the inner diameter of the necked section 32b is gradually reduced, when the dust-laden airflow entering the bottom chamber d from the gap h between the reflection screen 34 and the circumferential side wall of the inner cavity b enters the necked section 32b, the dust will be polluted. It collides with the circumferential side wall of the inner cavity b and falls along the circumferential side wall of the inner cavity b, and is then collected from the dust collection port 326; at the same time, the airflow moves upward through the multiple airflow holes of the reflective screen 34, and is then discharged by the exhaust. Air port 324 is exhausted.

Further, the separating cone body 32 further includes a buffer section 32c located between the reflection screen 34 and the necking section 32b, and the inner diameter of the buffer section 32c is unchanged. In this way, the dust-laden airflow entering the buffer section 32c through the gap h between the reflective screen 34 and the circumferential side wall of the inner cavity b transitions smoothly, avoiding airflow turbulence and improving the gas-dust separation effect.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (12)

1. A separation cone, comprising:

the separation cone body (32) is provided with an inner cavity (b), and an air inlet (322), an air outlet (324) and a dust collecting port (326) which are communicated with the inner cavity (b); the air inlet (322) is positioned on the circumferential side wall of the top end of the separation cone body (32), and the air outlet (324) and the dust collecting opening (326) are respectively positioned on the top end and the bottom end of the separation cone body (32) in the axial direction; and

a reflective screen (34) coupled within the interior cavity (b) and dividing the interior cavity (b) into a top chamber (c) and a bottom chamber (d); a gap (h) is formed between the reflecting screen (34) and the circumferential side wall of the inner cavity (b), and a plurality of airflow holes communicated with the top cavity (c) and the bottom cavity (d) are formed.

2. The separation cone of claim 1, wherein the reflective screen (34) is conical in shape with the apex of the reflective screen (34) facing the apex of the separation cone body (32).

3. A separation cone according to claim 2, characterized in that the reflecting screen (34) is conical.

4. The separation cone according to claim 1, wherein the separation cone body (32) comprises at least one diffuser section (32a) between the reflective screen (34) and the air inlet (322), each diffuser section (32a) having an inner diameter that gradually increases in a direction from a top end of the separation cone body (32) to a bottom end thereof.

5. The separation cone according to claim 4, wherein the separation cone body (32) further comprises at least one necked-down section (32b) between the reflective screen (34) and the dust collection port (326), each of the necked-down sections (32b) having an inner diameter gradually decreasing in a direction from a top end of the separation cone body (32) toward a bottom end thereof.

6. The separation cone of claim 5, wherein the separation cone body (32) further comprises a buffer section (32c) between the reflective screen (34) and the necked-down section (32b), the buffer section (32c) having a constant inner diameter.

7. The skimmer cone of claim 1, wherein said plurality of air flow apertures are symmetrically distributed about a central axis of said reflective screen (34).

8. The separation cone according to claim 1, characterized in that the circumferential edge of the reflective screen (34) is provided with at least two connecting portions (342) in a protruding manner, each connecting portion (342) being fixedly connected to a circumferential side wall of the inner cavity (b).

9. The separation cone according to claim 1, characterized in that the air inlet (322) tangentially penetrates a circumferential side wall of the inner cavity (b).

10. A dirt cup arrangement, characterized by comprising a dirt cup (10) and a separation cone (30) according to any one of claims 1 to 9;

an air inlet hole (12) is formed in the circumferential side wall of the dust cup (10), and the separation cone (30) is arranged in the dust cup (10).

11. The dirt cup device of claim 10, further comprising a filter screen (20) disposed within the dirt cup (10), the separation cone (30) being disposed within the filter screen (20);

a dust collecting cavity (a) is defined between the outer wall of the filter screen cover (20) and the inner wall of the dust cup (10).

12. A vacuum cleaner, characterized in that it comprises a dirt cup device (100) according to claim 10 or 11.

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