CN110664305A

CN110664305A - Dust collector

Info

Publication number: CN110664305A
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: 2020-01-10
Anticipated expiration: 2039-11-19
Also published as: CN110664305B

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, the movable impeller is configured to discharge airflow into the exhaust duct, and a flow blocking structure is arranged between the inner wall of the exhaust duct and the movable impeller to block the airflow from flowing back along the surface of the movable impeller. Through the arrangement of the flow blocking structure, the airflow can be prevented from flowing back along the surface of the movable impeller, and the leakage of the air quantity is reduced, so that the efficiency and the performance of the whole machine are improved.

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 applied to various places as a cleaning tool. In order to improve the performance of the whole vacuum cleaner, the motor is generally modified, and the performance of the whole vacuum cleaner is improved by improving the bare machine performance of the motor. However, under the condition of motor modification, the performance of the whole motor is improved, but the temperature rise, noise, service life and other aspects of the motor are also affected, multiple adjustments are often needed to meet the requirements, 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 an air flow filtered in the cleaner. The air duct 100 has an air inlet and an air outlet, 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 airflow in the vacuum cleaner enters the air duct 100 and is discharged through the air outlet.

Because a large gap 103 exists between the impeller 101 and the inner wall of the air duct 100, airflow leakage and backflow are easy to occur at the air inlet, so that the use efficiency of the motor 102 is low, and the performance of the whole machine is not high.

Disclosure of Invention

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

As the conception, the technical scheme adopted by the invention is as follows:

a vacuum cleaner is provided with an exhaust duct, wherein a movable impeller is arranged in an air inlet of the exhaust duct, the movable impeller is configured to discharge airflow into the exhaust duct, and a flow blocking structure is arranged between the inner wall of the exhaust duct and the movable impeller to block the airflow 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 annularly arranged between the inner wall of the exhaust duct and the surface of the movable impeller, and the sealing ring is abutted against the movable impeller to prevent airflow from flowing back along the surface of the movable impeller.

Wherein, the seal ring is provided with a plurality of at intervals.

Wherein, a first clearance is arranged between the lower surface of the movable impeller and the inner wall of the exhaust duct, and the sealing ring is positioned in the first clearance.

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 oppositely and are arranged at intervals along the axial direction of the movable impeller.

The flow blocking structure comprises a blocking part annularly arranged at the edge of the air inlet, and the blocking part bends and extends towards the direction of the movable impeller and extends into the movable impeller.

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

The air guide rib plates are arranged on the inner wall of the air exhaust duct and used for guiding airflow 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, so that airflow is prevented from flowing back along the surface of the movable impeller, the leakage of air volume is reduced, and the efficiency and the 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 sectional view of a vacuum cleaner according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a front view of the sole plate of the vacuum cleaner in accordance with one embodiment of the present invention;

FIG. 5 is a 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 view of the structure of the bottom bracket of the vacuum cleaner provided by the second embodiment of the invention;

FIG. 8 is a sectional view of a vacuum 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 vacuum cleaner 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 flow blocking ring; 22. a stopper portion; 23. wind guide rib plates; 24. a seal ring;

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

4. an exhaust duct;

5. a movable impeller; 51. a flange;

6. a motor;

7. and (5) sealing rings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

Referring to fig. 2 to 4, an embodiment of the present invention provides a vacuum cleaner, including a housing 1 and a main body portion disposed in the housing 1, where the main body portion is a split structure and includes a bottom support 2 and a cover 3 disposed on the bottom support 2, a space between the bottom support 2 and the cover 3 forms an exhaust duct 4, an air inlet of the exhaust duct 4 is disposed on the bottom support 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 an air flow into the exhaust duct 4.

The cover body 3 is provided with a mounting opening opposite to the air inlet, the mounting opening is provided with a motor 6, an output shaft of the motor 6 is connected with the movable impeller 5, and the movable impeller 5 is driven by the motor 6 to rotate so as to exhaust air into the exhaust duct 4. In this embodiment, the exhaust duct 4 is distributed around the circumference of the motor 6 in a U-shape, the motor 6 is located in the 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 airflow from flowing back along the surface of the movable impeller 5. Through the setting of keeping off class structure, can effectively hinder the air current backward flow, reduce revealing of the amount of wind to improve 6 efficiency of motor, 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 annularly arranged on one axial side of the outer edge of the movable impeller 5. When the movable impeller 5 rotates, wind enters the exhaust duct 4 from a gap on the movable impeller 5, 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 airflow is blocked from flowing back through the surface of the movable impeller 5.

Specifically, the first baffle ring 21 is disposed on the shoe 2, and an inner diameter of the first baffle ring 21 is slightly larger than an outer diameter of the movable impeller 5. In order to ensure the structural strength, the first baffle ring 21 is integrally formed with the base plate 2. For the sake of understanding, it can also be described that a step surface is provided on the bottom support 2 at the radial outer side of the movable impeller 5 to block the gap between the blade surface of the movable impeller 5 and the air inlet, so as to reduce the 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 movable vane 5 is located the air intake, along movable vane 5's axial, movable vane 5's two surfaces all with the exhaust duct 4 inner wall before the interval set up, the setting of first fender stream ring 21 blocks one side that movable vane 5 is close to the air intake, the setting of second fender stream ring 31 blocks one side that the air intake was kept away from to movable vane 5, further prevents the air current backward flow and reveals.

Specifically, the second baffle ring 31 is disposed on the cover 3, and the inner diameter of the first baffle ring 21 is slightly larger than the outer diameter of the movable impeller 5. In order to ensure structural strength, the second baffle ring 31 is integrally formed with the lid body 3. For the sake of easy understanding, it can be further described that a step surface is provided on the cover 3 radially outside the movable impeller 5 to block a gap between the movable impeller 5 and the exhaust duct 4, and reduce backflow.

The first flow blocking ring 21 and the second flow blocking 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 through 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 influenced.

The flow blocking structure further comprises a blocking portion 22 annularly arranged at the edge of the air inlet, and the blocking portion 22 extends in a bending manner towards the movable impeller 5 and extends into the movable impeller 5, so that the air inlet can be blocked, and airflow with a backflow trend can be redirected to the movable impeller 5.

Specifically, the stopping portion 22 is disposed on the bottom base 2, that is, the edge of the air inlet is bent and extended toward the movable impeller 5, and the stopping portion 22 faces the gap in the middle of the movable impeller 5, so that interference on rotation of the movable impeller 5 is avoided.

The inner wall of the exhaust duct 4 is provided with air guide rib plates 23, and the plurality of air guide rib plates 23 are arranged at intervals around the impeller 5 in the circumferential direction and used for guiding air flow discharged from the edge of the impeller 5 so as to enable air outlet to be uniform.

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

The first baffle ring 21 may be separately disposed, or may be disposed together with the stopper 22 to form a double baffle structure, so that the backflow blocking effect is better.

Example two

Fig. 5 to 7 show a second embodiment, wherein the same or corresponding parts as the first embodiment are provided with the same reference numerals as the first embodiment. For the sake of simplicity, only the differences 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 an encircling manner, and the sealing ring 24 is abutted with the movable impeller 5 to prevent the airflow from flowing back along the surface of the movable impeller 5.

The seal ring 24 may be provided separately or simultaneously with the first baffle ring 21, so that the effect of blocking the backflow is better.

Because movable vane wheel 5 rotates, and collet 2 and lid 3 are all fixed, movable vane wheel 5 rotates for the air intake, so must have the gap between movable vane wheel 5 and the air intake, and even the gap is very little, also exists. In the present embodiment, a first gap is formed between the lower surface of the movable impeller 5 and the inner wall of the exhaust duct 4, and the seal ring 24 is located in the first gap.

The seal ring 24 is provided in plurality at intervals. The plurality of seal rings 24 form a multi-baffle structure, so that the effect of blocking the backflow is better. The sealing rings 24 surround layer by layer, and even if a small part of airflow enters the first gap through the gap between the movable impeller 5 and the first flow blocking ring 21, the airflow is difficult to reach the air inlet due to the layer-by-layer blocking effect of the sealing rings 24, so that backflow at the air inlet is prevented.

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

The sectional area of the seal ring 24 is gradually reduced from the inner wall of the exhaust duct 4 toward the movable impeller 5, so that the contact area between the seal ring 24 and the surface of the movable impeller 5 is small, and interference with rotation of the movable impeller 5 is prevented.

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

EXAMPLE III

Fig. 8 and 10 show a third embodiment, wherein the same or corresponding parts as the second embodiment are provided with the same reference numerals as the second embodiment. For the sake of simplicity, only the points of difference 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 air flow leakage.

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

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A dust collector is provided with an exhaust duct (4), wherein a movable impeller (5) is arranged in an air inlet of the exhaust duct (4), the movable impeller (5) is configured to discharge airflow into the exhaust duct (4), and a flow blocking structure is arranged between the inner wall of the exhaust duct (4) and the movable impeller (5) to block airflow from flowing back along the surface of the movable impeller (5).

2. The vacuum cleaner as claimed in claim 1, wherein the flow blocking structure comprises a first flow blocking ring (21) disposed on an inner wall of the exhaust duct (4), the first flow blocking ring (21) being disposed on an axial side of an outer edge of the movable impeller (5).

3. The vacuum cleaner according to claim 1 or 2, 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 movable impeller (5), and the sealing ring (24) abuts against the movable impeller (5) to prevent the airflow from flowing back along the surface of the movable impeller (5).

4. A vacuum cleaner according to claim 3, characterized in that the sealing ring (24) is provided in plurality at intervals.

5. A vacuum cleaner according to claim 3, characterized in that there is a first gap between the lower surface of the impeller (5) and the inner wall of the exhaust duct (4), the sealing ring (24) being located in the first gap.

6. The vacuum cleaner as claimed in claim 2, wherein the baffle structure further comprises a second baffle ring (31) disposed on an inner wall of the exhaust duct (4), the second baffle ring (31) being disposed on the other axial side of the outer edge of the movable impeller (5).

7. The vacuum cleaner as claimed in claim 6, wherein 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).

8. The vacuum cleaner as claimed in claim 1, wherein the flow blocking structure comprises a blocking portion (22) annularly arranged at an edge of the air inlet, and the blocking portion (22) extends in a bending manner towards the impeller (5) and extends into the impeller (5).

9. The vacuum cleaner as claimed in 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 a sealing ring (7) is sleeved on the flange.

10. The vacuum cleaner according to claim 1, wherein air guiding ribs (23) are arranged on the inner wall of the air exhaust duct (4), and a plurality of air guiding ribs (23) are used for guiding airflow exhausted from the edge of the movable impeller (5).