Vacuum cleaner with air vent

Abstract

The present invention discloses a vacuum cleaner with an air leakage hole, which includes a housing for accommodating a motor, a cup body connected to the housing and having a dust cup cavity, and a rotating wheel assembly arranged in the dust cup cavity and performing dust separation, wherein the rotating wheel assembly includes a separation wheel having a plurality of airflow channels and capable of rotating to separate dust, a fixing frame having an air leakage hole at one end for accommodating the separation wheel, an impeller arranged at the other end of the fixing frame and coaxially arranged with the separation wheel, and a rotating shaft passing through the axes of the separation wheel and the impeller, and a transition cavity connected to the air leakage hole is arranged between the fixing frame and the cup body. The advantages of the present invention are: avoiding the generation of high pressure inside the motor when it stops working, timely air leakage and release, reducing air pressure and ensuring product reliability.

Description

Technical Field

[0001] The invention relates to a dust collector with an air leakage hole. Background Art

[0002] Currently, some vacuum cleaners separate dust by actively or passively rotating an auxiliary wheel inside the dust cup. However, once the auxiliary wheel stops working, a high air pressure is generated inside the auxiliary wheel due to the rotation. Once the air cannot be released, it is easy to cause high-pressure damage to the auxiliary wheel or the dust cup, affecting the life of the product. Summary of the invention

[0003] The purpose of the present invention is to provide a vacuum cleaner with an air release hole to avoid high pressure generated inside the motor when the motor stops working, release the air in time, reduce the air pressure and ensure product reliability.

[0004] The specific technical solution of the present invention is: a vacuum cleaner with an air leakage hole, which includes a shell that accommodates a motor, a cup body connected to the shell and having a dust cup cavity, and a rotating wheel assembly arranged in the dust cup cavity and performing dust separation, wherein the rotating wheel assembly includes a separation wheel having a plurality of air flow channels and rotatable to separate dust, a fixed frame at one end for accommodating the separation wheel and having an air leakage hole, an impeller arranged at the other end of the fixed frame and coaxially arranged with the separation wheel, and a rotating shaft passing through the axes of the separation wheel, the impeller and the three, and a transition cavity connected to the air leakage hole is arranged between the fixed frame and the cup body.

[0005] On the basis of the above technical solution, the following subsidiary technical solutions are further included:

[0006] The separation wheel comprises a separation wheel shaft portion having a separation wheel shaft hole, a separation wheel grid portion located outside the separation wheel shaft portion, and a separation wheel circumferential portion located at the top of the separation wheel grid portion, wherein the separation wheel grid portion is provided with a plurality of inclined or spiral grid ribs arranged at intervals, wherein an air flow channel is provided between two adjacent grid ribs.

[0007] It also includes a follower wheel, which includes a follower wheel shaft portion having a follower wheel shaft hole, a plurality of follower wheel air outlets located outside the follower wheel shaft portion, and a follower wheel rim located outside the follower wheel air outlets, wherein the follower wheel rim includes an inclined surface formed on the outer surface, and a vertical surface connected to one end of the inclined surface.

[0008] The fixing frame includes a fixing frame shaft portion having a fixing frame shaft hole and a fixing frame bearing chamber, a fixing frame air collecting cavity formed outside the fixing frame shaft portion, a fixing frame air inlet arranged in the fixing frame air collecting cavity, a fixing frame outer edge located outside the fixing frame air collecting cavity, a fixing frame annular cavity located between the fixing frame air collecting cavity and the fixing frame outer edge, and a fixing frame end portion extending upward from the fixing frame outer edge and accommodating an impeller.

[0009] The impeller comprises an impeller shaft portion having an impeller shaft hole, a hub located outside the impeller shaft portion, a plurality of arc-shaped blades connected to the outer surface of the hub, and an impeller connecting portion connecting the impeller shaft portion and the hub.

[0010] It also includes a cover plate arranged above the impeller, wherein the cover plate includes a cover plate base, a cover plate bearing chamber arranged on the cover plate base, and a cover plate air outlet arranged adjacent to the cover plate bearing chamber.

[0011] It also includes a handle located at the rear side of the cup body, a post-motor filter located at the upper end of the handle and adjacent to the motor, and a battery pack located at the lower end of the handle, wherein the motor is located above the cup body.

[0012] The central axis of the cup body is perpendicular to the horizontal plane and has an air inlet pipe, and the central axis of the air inlet pipe intersects with the handle at an obtuse angle.

[0013] The cross-sectional area of ​​the air leakage hole is smaller than the cross-sectional area of ​​the air flow channel, and is lower than one tenth of the cross-sectional area of ​​the transition cavity.

[0014] The invention has the advantages of preventing high pressure from being generated inside the motor when the motor stops working, releasing the gas in time, reducing the gas pressure and ensuring product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 is a stereogram of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] Figure 3 is a cross-sectional view of the present invention;

[0019] Figure 4 is a three-dimensional diagram of the separation wheel in the present invention;

[0020] Figure 5 is a bottom schematic diagram of the following wheel in the present invention;

[0021] Figure 6 is a stereogram of a follower wheel in the present invention;

[0022] Figure 7 is a three-dimensional diagram of the fixing frame of the present invention;

[0023] Figure 8 is a three-dimensional diagram of the separation wheel in the present invention;

[0024] Fig. 9 is a three-dimensional diagram of an impeller in the present invention;

[0025] Fig.10 It is a three-dimensional diagram of the cover plate in the present invention. DETAILED DESCRIPTION

[0026] Example: Figure 1-10 As shown, the present invention discloses a specific embodiment of a vacuum cleaner with an air leakage hole, which includes a housing 20 for accommodating a motor 30, a cup body 100 connected to the housing 20 and having a dust cup cavity 102, a handle 22 located at the rear side of the cup body 100, a motor post filter located at the upper end of the handle 22 and adjacent to the motor 30, a battery pack 50 located at the lower end of the handle 22, and a rotating wheel assembly disposed in the dust cup cavity 102 and performing dust separation. The motor 30 is located above the cup body 100, the rotating wheel assembly includes a separation wheel 200 having a plurality of air flow channels 234 and capable of rotating to separate dust, a fixing frame 400 having one end for accommodating the separation wheel 200 and having an air leakage hole 442, an impeller 500 disposed at the other end of the fixing frame 400 and coaxially disposed with the separation wheel 200, and a cover plate 600 disposed above the impeller 500. The central axis of the cup body 100 is perpendicular to the horizontal plane and has an air inlet pipe 120, and the central axis direction of the air inlet pipe 120 intersects with the handle 22 at an obtuse angle. A rotatable bottom cover 140 is provided at the bottom of the cup body 100 to clean dust.

[0027] The separation wheel 200 includes a separation wheel shaft portion 210 having a separation wheel shaft hole 212, a separation wheel grid portion 230 located outside the separation wheel shaft portion 210, and a separation wheel circumferential portion 220 located at the top of the separation wheel grid portion 230, wherein the separation wheel grid portion 230 is provided with a plurality of inclined or spiral and spaced grid ribs 232, wherein two adjacent grid ribs 232 are provided with an air flow channel 234.

[0028] The follower wheel 300 includes a follower wheel shaft portion 310 having a follower wheel shaft hole 312, a plurality of follower wheel air outlets 320 located outside the follower wheel shaft portion 310, and a follower wheel rim located outside the follower wheel air outlet 320, wherein the follower wheel rim includes an inclined surface 340 formed on the outer surface, and a vertical surface 342 at one end of the inclined surface 340. The circumferential angle corresponding to the inclined surface 340 is greater than 60 degrees. The vertical height of the vertical surface 342 is greater than half the axial height of the follower wheel 300. A space for accommodating airflow is formed between the inclined surface 340 and the vertical surface 342 and preventing the airflow from moving upward in the axial direction. In this embodiment, the number of the inclined surface 340 and the vertical surface 342 is preferably 4, and may also be 3 or other.

[0029] The fixing frame 400 includes a fixing frame shaft portion 410 having a fixing frame shaft hole 412 and a fixing frame bearing chamber 414, a fixing frame air collecting chamber 420 formed outside the fixing frame shaft portion 410, a fixing frame air inlet 430 arranged in the fixing frame air collecting chamber 420, a fixing frame outer edge 440 located outside the fixing frame air collecting chamber 420, and a fixing frame annular chamber 450 located between the fixing frame air collecting chamber 420 and the fixing frame outer edge 440, and a fixing frame end portion 460 extending upward from the fixing frame outer edge 440 and accommodating the impeller 500. The cross-sectional area of ​​the follower wheel air outlet 320 is larger than the cross-sectional area of ​​the fixing frame air inlet 430. A transition chamber 104 is arranged between the fixing frame 400 and the cup body 100 of the rotating wheel assembly, and the fixing frame outer edge 440 is provided with an air leakage hole 442, one end of which is connected to the transition chamber 104 and the other end of which is connected to the outside of the follower wheel 300. The end portion 460 of the fixing frame is provided with an end cavity 462 communicating with the fixing frame shaft hole 412, and an end air inlet 464 located in the end cavity 462 and communicating with the fixing frame air inlet 430. The cross-sectional area of ​​the air leakage hole 442 is smaller than the cross-sectional area of ​​the air flow channel 234, and is lower than one tenth of the cross-sectional area of ​​the filter cavity 104, so as to reduce the influence during normal operation.

[0030] The impeller 500 includes an impeller shaft 510 having an impeller shaft hole 512, a hub 520 located outside the impeller shaft 510, a plurality of arc-shaped blades 530 connected to the outer surface of the hub 520, and an impeller connecting portion 540 connecting the impeller shaft 510 and the hub 520. In order to obtain a better separation efficiency, the rotation speed of the impeller 500 is preferably 2000-10000 rpm, the overall height of the rotating wheel assembly is at least greater than 1 / 4 and less than 3 / 4 of the height of the cup body 100, and the minimum diameter of the separation wheel 200 in the rotating wheel assembly is greater than 1 / 3 and less than 2 / 3 of the diameter of the cup body 100, so as to fully drive the airflow for separation. The axial height of the separation wheel 200 is greater than the axial height of the following wheel 300 or the impeller 500. Preferably, the axial height of the separation wheel 200 is greater than the sum of the axial heights of the following wheel 300 and the impeller 500. Preferably, the axial height of the separation wheel 200 is preferably 25-45 mm, the bottom diameter is 50-65 mm, and the top diameter is 65-80 mm. The axial height of the impeller 500 is preferably 8-20 mm, and the diameter is 50-75 mm, thereby achieving effective separation and space intensiveness, a more compact structure, and better separation performance.

[0031] The cover plate 600 includes a cover plate base 604, a cover plate bearing chamber 610 disposed on the cover plate base 604, a cover plate air outlet 620 disposed adjacent to the cover plate bearing chamber 610, and a rotating shaft 700 passing through the axes of the separation wheel 200, the following wheel 300, and the impeller 500. The cross-sectional area of ​​the cover plate air outlet 620 is also smaller than the cross-sectional area of ​​the following wheel air outlet 320. The projection of the end air inlet 464 and the cover plate air outlet 620 on the horizontal plane at least partially overlaps, so as to shorten the airflow path and reduce airflow loss.

[0032] The invention has the advantages of preventing high pressure from being generated inside the motor when the motor stops working, releasing the gas in time, reducing the gas pressure and ensuring product reliability.

[0033] Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum cleaner with an air leakage hole, characterized in that It includes: A housing (20) for accommodating a motor (30), a cup body (100) connected to the housing (20) and having a dust cup cavity (102), and a rotating wheel assembly arranged in the dust cup cavity (102) and performing dust separation, wherein the rotating wheel assembly comprises a separation wheel (200) having a plurality of air flow channels (234) and capable of rotating to separate dust, a fixing frame (400) having an air leakage hole (442) at one end for accommodating the separation wheel (200), an impeller (500) arranged at the other end of the fixing frame (400) and coaxially arranged with the separation wheel (200), and a rotating shaft (700) passing through the axes of the separation wheel (200) and the impeller (500), and a transition cavity (104) communicating with the air leakage hole (442) is arranged between the fixing frame (400) and the cup body (100).

2. The vacuum cleaner with an air leakage hole as claimed in claim 1, characterized in that: The separation wheel (200) comprises a separation wheel shaft portion (210) having a separation wheel shaft hole (212), a separation wheel grid portion (230) located outside the separation wheel shaft portion (210), and a separation wheel circumferential portion (220) located at the top of the separation wheel grid portion (230), wherein the separation wheel grid portion (230) is provided with a plurality of inclined or spiral grid ribs (232) arranged at intervals, wherein an air flow channel (234) is provided between two adjacent grid ribs (232).

3. The vacuum cleaner with an air leakage hole as claimed in claim 2, characterized in that Also included is a follower wheel (300), which includes a follower wheel shaft portion (310) having a follower wheel shaft hole (312), a plurality of follower wheel air outlets (320) located outside the follower wheel shaft portion (310), and a follower wheel rim located outside the follower wheel air outlets (320), wherein the follower wheel rim includes an inclined surface (340) formed on the outer surface, and a vertical surface (342) connected to one end of the inclined surface (340).

4. The vacuum cleaner with an air leakage hole as claimed in claim 3, characterized in that: The fixing frame (400) comprises a fixing frame shaft portion (410) having a fixing frame shaft hole (412) and a fixing frame bearing chamber (414), a fixing frame air collecting chamber (420) formed outside the fixing frame shaft portion (410), a fixing frame air inlet (430) arranged in the fixing frame air collecting chamber (420), a fixing frame outer edge (440) located outside the fixing frame air collecting chamber (420), a fixing frame annular chamber (450) located between the fixing frame air collecting chamber (420) and the fixing frame outer edge (440), and a fixing frame end portion (460) extending upward from the fixing frame outer edge (440) and accommodating an impeller (500).

5. The vacuum cleaner with an air leakage hole as claimed in claim 4, characterized in that: The impeller (500) comprises an impeller shaft portion (510) having an impeller shaft hole (512), a hub (520) located outside the impeller shaft portion (510), a plurality of arc-shaped blades (530) connected to the outer surface of the hub (520), and an impeller connecting portion (540) connecting the impeller shaft portion (510) and the hub (520).

6. The vacuum cleaner with an air leakage hole as claimed in claim 4, characterized in that Also included is a cover plate (600) arranged above the impeller (500), the cover plate (600) comprising a cover plate base (604), a cover plate bearing chamber (610) arranged on the cover plate base (604), and a cover plate air outlet (620) arranged adjacent to the cover plate bearing chamber (610).

7. A vacuum cleaner with an air leakage hole as claimed in claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that It also includes a handle (22) located at the rear side of the cup body (100), a post-motor filter located at the upper end of the handle (22) and adjacent to the motor (30), and a battery pack (50) located at the lower end of the handle (22), wherein the motor (30) is located above the cup body (100).

8. The vacuum cleaner with an air leakage hole as claimed in claim 7, characterized in that: The central axis of the cup body (100) is perpendicular to the horizontal plane and has an air inlet pipe (120), and the central axis direction of the air inlet pipe (120) intersects with the handle (22) at an obtuse angle.

9. The vacuum cleaner with an air leakage hole as claimed in claim 2, characterized in that: The cross-sectional area of ​​the air leakage hole (442) is smaller than the cross-sectional area of ​​the air flow channel (234), and is lower than one tenth of the cross-sectional area of ​​the transition chamber (104).

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