CN110664305B

CN110664305B - Dust collector

Info

Publication number: CN110664305B
Application number: CN201911137296.0A
Authority: CN
Inventors: 孔钊; 顾良; 李孝亮
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2024-04-02
Anticipated expiration: 2039-11-19
Also published as: CN110664305A

Abstract

The invention discloses a dust collector, and belongs to the technical field of dust collectors. The dust collector is provided with an exhaust duct, a movable impeller is arranged in an air inlet of the exhaust duct and is configured to exhaust air flow into the exhaust duct, and a flow blocking structure is arranged between the inner wall of the exhaust duct and the movable impeller so as to prevent the air flow from flowing back along the surface of the movable impeller. Through the setting of fender flow structure, can hinder the air current to follow the surperficial backward flow of moving impeller, reduce the leakage of amount of wind to improve complete machine efficiency and performance.

Description

Dust collector

Technical Field

The invention relates to the technical field of dust collectors, in particular to a dust collector.

Background

The dust collector is widely used as a cleaning tool in various places. In order to achieve the improvement of the performance of the whole machine, the existing dust collector generally changes a motor, and the aim of improving the performance of the whole machine is achieved by improving the bare metal performance of the motor. However, under the condition of motor modification, the performance of the whole machine is improved, but the temperature rise, noise, service life and other aspects of the motor are affected, and the motor needs to be adjusted for multiple times to meet the requirements, so that the adjustment period is long, and the corresponding production and manufacturing cost is high.

As shown in fig. 1, an air duct 100 is provided in a housing of the cleaner, and the air duct 100 is used to discharge air flow after filtering in the cleaner. The air duct 100 has an air inlet and an air outlet, and an impeller 101 is disposed at the air inlet, and the impeller 101 is driven by a motor 102. When the impeller 101 rotates, the air flow in the dust collector enters the air duct 100 and is discharged through the air outlet.

Because a larger gap 103 exists between the impeller 101 and the inner wall of the air duct 100, air leakage and backflow easily occur at the air inlet, so that the service efficiency of the motor 102 is low, and the performance of the whole machine is low.

Disclosure of Invention

The invention aims to provide a dust collector, which solves the technical problems of air leakage and backflow during air exhaust of the dust collector in the prior art.

The technical scheme adopted by the invention is as follows:

a dust collector is provided with an exhaust duct, a movable impeller is arranged in an air inlet of the exhaust duct, the movable impeller is configured to exhaust air flow into the exhaust duct, and a flow blocking structure is arranged between the inner wall of the exhaust duct and the movable impeller so as to prevent the air flow from flowing back along the surface of the movable impeller.

The flow blocking structure comprises a first flow blocking ring arranged on the inner wall of the exhaust duct, and the first flow blocking ring is arranged on one axial side of the outer edge of the movable impeller.

The flow blocking structure comprises a sealing ring which is arranged between the inner wall of the exhaust duct and the surface of the movable impeller in a surrounding mode, and the sealing ring is in butt joint with the movable impeller so as to prevent air flow from flowing back along the surface of the movable impeller.

Wherein, sealing ring interval is provided with a plurality of.

The lower surface of the movable impeller and the inner wall of the exhaust duct are provided with a first gap, and the sealing ring is positioned in the first gap.

The flow blocking structure further comprises a second flow blocking ring arranged on the inner wall of the exhaust duct, and the second flow blocking ring is arranged on the other axial side of the outer edge of the movable impeller.

The first flow blocking ring and the second flow blocking ring are arranged opposite to each other and are distributed at intervals along the axial direction of the movable impeller.

The flow blocking structure comprises a blocking part which is annularly arranged at the edge of the air inlet, and the blocking part extends towards the direction of the movable impeller in a bending way and stretches into the movable impeller.

The edge of the movable impeller is bent towards the inner wall of the exhaust duct to form a flange, and a sealing ring is sleeved on the flange.

The inner wall of the exhaust duct is provided with air guide rib plates, and a plurality of air guide rib plates are used for guiding air flow exhausted from the edge of the movable impeller.

The invention has the beneficial effects that:

according to the dust collector provided by the invention, the flow blocking structure is arranged between the inner wall of the exhaust duct and the movable impeller to prevent air flow from flowing back along the surface of the movable impeller, so that leakage of air quantity is reduced, and the efficiency and performance of the whole dust collector are improved.

Drawings

FIG. 1 is a cross-sectional view of a conventional vacuum cleaner;

fig. 2 is a cross-sectional view of a cleaner according to a first embodiment of the present invention;

fig. 3 is an enlarged view at a of fig. 2;

FIG. 4 is a front view of a shoe of a vacuum cleaner according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a vacuum cleaner according to a second embodiment of the present invention;

fig. 6 is an enlarged view at B of fig. 5;

fig. 7 is a schematic structural diagram of a shoe of a vacuum cleaner according to a second embodiment of the present invention;

fig. 8 is a cross-sectional view of a cleaner according to a third embodiment of the present invention;

fig. 9 is an enlarged view at C of fig. 8;

fig. 10 is a schematic structural view of a movable impeller of a dust collector according to a third embodiment of the present invention.

In the figure:

100. an air duct; 101. an impeller; 102. a motor; 103. a gap;

1. a housing;

2. a bottom support; 21. a first baffle ring; 22. a stopper; 23. an air guide rib plate; 24. a seal ring;

3. a cover body; 31. a second baffle ring;

4. an exhaust duct;

5. a moving impeller; 51. a flange;

6. a motor;

7. and (3) sealing rings.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

Referring to fig. 2 to 4, an embodiment of the present invention provides a dust collector, which includes a casing 1 and a main body portion disposed in the casing 1, wherein the main body portion is of a split structure, and includes a base 2 and a cover 3 disposed on the base 2, a space between the base 2 and the cover 3 forms an exhaust duct 4, an air inlet of the exhaust duct 4 is disposed on the base 2, a movable impeller 5 is disposed in the air inlet of the exhaust duct 4, and the movable impeller 5 is configured to discharge air flow into the exhaust duct 4.

The cover body 3 is provided with a mounting opening at a position opposite to the air inlet, a motor 6 is arranged at the mounting opening, an output shaft of the motor 6 is connected with the movable impeller 5, and the movable impeller 5 is driven to rotate by the motor 6 so as to exhaust air into the exhaust duct 4. In this embodiment, the exhaust duct 4 is circumferentially distributed around the motor 6 in a U shape, the motor 6 is located in a space surrounded by the cover 3, and the air inlet is located at the bottom end of the exhaust duct 4.

A flow blocking structure is arranged between the inner wall of the exhaust duct 4 and the movable impeller 5 to block the air flow from flowing back along the surface of the movable impeller 5. Through the setting of fender flow structure, can effectively hinder the air current backward flow, reduce revealing of amount of wind to improve motor 6 efficiency, and then improve complete machine efficiency and performance.

The flow blocking structure comprises a first flow blocking ring 21 arranged on the inner wall of the exhaust duct 4, and the first flow blocking ring 21 is arranged on one axial side of the outer edge of the movable impeller 5 in a surrounding manner. When the movable impeller 5 rotates, the air gap on the wind driven impeller 5 enters the exhaust duct 4, and the first flow blocking ring 21 is annularly arranged on one axial side of the outer edge of the movable impeller 5, so that the air flow is blocked from flowing back through the blade surfaces of the movable impeller 5.

Specifically, the first baffle ring 21 is disposed on the base 2, and an inner diameter of the first baffle ring 21 is slightly larger than an outer diameter of the impeller 5. In order to ensure the structural strength, the first baffle ring 21 is integrally formed with the shoe 2. For ease of understanding, it may also be described that a stepped surface is provided on the shoe 2 radially outside the impeller 5 to block the gap between the blade surface of the impeller 5 and the air intake, reducing backflow.

The flow blocking structure further comprises a second flow blocking ring 31 arranged on the inner wall of the exhaust duct 4, and the second flow blocking ring 31 is arranged on the other axial side of the outer edge of the movable impeller 5. Because the impeller 5 is located in the air intake, along the axial of impeller 5, two surfaces of impeller 5 all set up with the inner wall of exhaust duct 4 before the interval, the setting of first fender flow ring 21 blocks the impeller 5 to one side that is close to the air intake, and the setting of second fender flow ring 31 blocks the impeller 5 to one side that is away from the air intake, further prevents air current backward flow and leakage.

Specifically, the second flow blocking ring 31 is disposed on the cover 3, and the inner diameter of the second flow blocking ring 31 is slightly larger than the outer diameter of the impeller 5. In order to ensure structural strength, the second baffle ring 31 is integrally formed with the cover 3. For ease of understanding, it may also be described that a stepped surface is provided on the cover 3 radially outside the impeller 5 to block the gap between the impeller 5 and the exhaust duct 4, reducing backflow.

The first baffle ring 21 and the second baffle ring 31 are arranged opposite to each other and are arranged at intervals along the axial direction of the movable impeller 5. The air flow entering from the air inlet can enter the exhaust duct 4 in the gap between the first flow blocking ring 21 and the second flow blocking ring 31, and the smooth flow of the air flow is not affected.

The flow blocking structure further comprises a blocking part 22 which is arranged at the edge of the air inlet in a surrounding mode, and the blocking part 22 extends towards the direction of the movable impeller 5 in a bending mode and stretches into the movable impeller 5, so that the air inlet can be blocked, and air flow with a backflow trend can be redirected to the movable impeller 5.

Specifically, the stop portion 22 is disposed on the base 2, that is, the edge of the air inlet is bent and extended toward the impeller 5, and the stop portion 22 faces the gap in the middle of the impeller 5, so that no interference is generated to the rotation of the impeller 5.

The inner wall of the exhaust duct 4 is provided with air guide rib plates 23, and a plurality of air guide rib plates 23 are arranged at intervals around the circumference of the movable impeller 5 and used for guiding air flow exhausted from the edge of the movable impeller 5 so as to lead air to be uniform.

Specifically, the wind guiding rib plate 23 is arranged on the bottom support 2, and a certain distance is reserved between the wind guiding rib plate 23 and the movable impeller 5. An included angle is formed between the air guide rib plates 23 and the radial direction of the bottom support 2, so that the plurality of air guide rib plates 23 form a clockwise or counterclockwise air guide trend. The air guide rib plates 23 extend towards the cover body 3 and can be contacted with the cover body 3, so that air flow entering the exhaust duct 4 from the air inlet flows out between the adjacent air guide rib plates 23.

The first baffle ring 21 may be separately provided, or may be provided with the stop portion 22 at the same time to form a dual baffle structure, so that the blocking effect on the backflow is better.

Example two

Fig. 5 to 7 show a second embodiment, wherein the same or corresponding parts as those of the first embodiment are designated by the corresponding reference numerals. For simplicity, only the points of distinction between the second embodiment and the first embodiment will be described. The difference is that the flow blocking structure comprises a sealing ring 24 which is arranged between the inner wall of the exhaust duct 4 and the surface of the movable impeller 5 in a surrounding manner, and the sealing ring 24 is abutted with the movable impeller 5 so as to prevent the air flow from flowing back along the surface of the movable impeller 5.

The sealing ring 24 can be arranged alone or simultaneously with the first baffle ring 21, so that the blocking effect on the backflow is better.

Because the movable impeller 5 rotates, and the base 2 and the cover 3 are fixed, the movable impeller 5 rotates relative to the air inlet, a gap is necessarily formed between the movable impeller 5 and the air inlet, and even if the gap is small, the gap is also formed. In this embodiment, a first gap is provided between the lower surface of the impeller 5 and the inner wall of the exhaust duct 4, and the seal ring 24 is located in the first gap.

The seal rings 24 are provided in plural at intervals. The plurality of seal rings 24 form a multiple flow blocking structure that provides a better barrier to backflow. The plurality of sealing rings 24 encircle layer by layer, even if a small part of air flow enters the first gap through the gap between the movable impeller 5 and the first baffle ring 21, the air flow is difficult to reach the air inlet due to the layer by layer blocking effect of the sealing rings 24, and the air inlet is further prevented from generating backflow.

In the present embodiment, two seal rings 24 are provided at intervals.

The cross-sectional area of the sealing ring 24 gradually decreases from the inner wall of the exhaust duct 4 towards the movable impeller 5, so that the contact area between the sealing ring 24 and the surface of the movable impeller 5 is smaller, and interference to the rotation of the movable impeller 5 is prevented.

The seal ring 24 may be fixedly connected to the inner wall of the exhaust duct 4 or may be fixedly connected to the movable vane 5, which is not limited herein.

Example III

Fig. 8 and 10 show a third embodiment, in which the same or corresponding parts as those of the embodiment are given the same reference numerals as those of the embodiment. For simplicity, only the points of distinction between the third embodiment and the second embodiment will be described. The difference is that the edge of the movable impeller 5 bends towards the inner wall of the exhaust duct 4 to form a flange, and a sealing ring 7 is sleeved on the flange. The sealing ring 7 further improves the blocking effect and prevents the leakage of air flow.

The stop 22 may be provided simultaneously with the sealing ring 7 to provide a double blocking effect. The lower edge of the movable impeller 5 is bent towards the inner wall direction of the exhaust duct 4, the sealing ring 7 is positioned at the inner side of the stop part 22, and the flange is matched with the stop part 22 to block the edge of the air inlet.

The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a dust catcher, includes casing (1) and set up in main part in casing (1), main part is split type structure, including collet (2) and set up lid (3) on collet (2), the space between collet (2) and lid (3) forms exhaust duct (4), be provided with movable vane wheel (5) in the air intake of exhaust duct (4), movable vane wheel (5) are configured to with the air current into exhaust duct (4), characterized in that, be provided with between the inner wall of exhaust duct (4) and movable vane wheel (5) and keep off the flow structure to hinder the air current along the surface backward flow of movable vane wheel (5);

the flow blocking structure comprises a first flow blocking ring (21) arranged on the inner wall of the exhaust duct (4), the first flow blocking ring (21) is arranged on one axial side of the outer edge of the movable impeller (5), the first flow blocking ring (21) is arranged on the bottom support (2), and the inner diameter of the first flow blocking ring (21) is slightly larger than the outer diameter of the movable impeller (5);

the flow blocking structure further comprises a second flow blocking ring (31) arranged on the inner wall of the exhaust duct (4), the second flow blocking ring (31) is arranged on the other axial side of the outer edge of the movable impeller (5), the second flow blocking ring (31) is arranged on the cover body (3), and the inner diameter of the second flow blocking ring (31) is slightly larger than the outer diameter of the movable impeller (5);

the first flow blocking ring (21) and the second flow blocking ring (31) are arranged opposite to each other and are distributed at intervals along the axial direction of the movable impeller (5).

2. A vacuum cleaner according to claim 1, wherein the flow blocking structure comprises a sealing ring (24) arranged around the inner wall of the exhaust duct (4) and the surface of the impeller (5), the sealing ring (24) being in abutment with the impeller (5) to prevent backflow of air along the surface of the impeller (5).

3. A vacuum cleaner according to claim 2, wherein the sealing rings (24) are provided in a plurality at intervals.

4. A vacuum cleaner according to claim 2, characterized in that a first gap is provided between the lower surface of the impeller (5) and the inner wall of the exhaust duct (4), in which gap the sealing ring (24) is located.

5. A vacuum cleaner according to claim 1, wherein the flow blocking structure comprises a blocking portion (22) arranged around the edge of the air inlet, the blocking portion (22) extending in a curved manner in the direction of the impeller (5) and extending into the interior of the impeller (5).

6. A vacuum cleaner according to claim 1, characterized in that the edge of the impeller (5) is bent towards the inner wall of the exhaust duct (4) to form a flange, and the flange is sleeved with a sealing ring (7).

7. A vacuum cleaner according to claim 1, characterized in that the inner wall of the exhaust duct (4) is provided with air guiding ribs (23), a number of said air guiding ribs (23) being arranged to guide the air flow exiting from the edge of the impeller (5).