Handheld dust collector
By designing the up and down exhaust chamber and transverse partition structure in the handheld vacuum cleaner, the airflow path is extended, and the problem of high noise in the handheld vacuum cleaner is solved and the comfort of use is improved.
Patent Information
- Application Number
- CN202422481325.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The handheld vacuum cleaner is noisy during work, which affects the user experience.
A compact hand-held vacuum cleaner is designed, by providing an exhaust chamber extending up and downwardly in the housing, and adding a transverse partition and multiple exhaust ports to the exhaust chamber, extending the airflow exhaust path, increasing the airflow pressure loss, thereby reducing noise.
It effectively reduces the working noise of the handheld vacuum cleaner and makes the operator more comfortable to use.
Smart Images
Figure CN223299021U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cleaning technology, and in particular to a handheld vacuum cleaner. Background Art
[0002] Handheld vacuum cleaners are popular among users due to their small size, compactness, and portability. When in use, the handheld vacuum cleaner body is directly held by the operator's hand, usually at a relatively close distance from the operator. This also directly affects the user experience due to the noise level of the handheld vacuum cleaner.
[0003] A handheld vacuum cleaner typically consists of a housing, a dust cup, and a suction motor. Inside the housing is an exhaust duct that vents the airflow generated by the suction motor to the outside world, along which a filter is placed. Because airflow through the exhaust duct produces noise, the design of the exhaust duct directly impacts the operating noise of the handheld vacuum cleaner. Utility Model Content
[0004] The purpose of this application is to provide a handheld vacuum cleaner with a compact structure while effectively reducing the noise generated by the handheld vacuum cleaner during operation.
[0005] In order to achieve the above-mentioned purpose, the present application provides a handheld vacuum cleaner, comprising a shell, a cyclone separation device arranged on the lower side of the shell, and a suction motor installed on the inner side of the shell, a motor cover is provided on the inner side of the shell, the suction motor is placed on the inner side of the motor cover, a motor downstream filter is provided between the shell and the motor cover, an exhaust chamber extending up and down is defined between the motor downstream filter and the inner wall surface of the shell, a motor air outlet is provided on the motor cover, and a plurality of exhaust ports connecting the exhaust chamber with the outside atmosphere are arranged at the lower part of the shell.
[0006] In the above technical solution, preferably, a transverse partition with a plurality of through holes is provided in the middle of the exhaust cavity, and the plurality of exhaust ports are located on the lower side of the transverse partition.
[0007] In the above technical solution, preferably, the lower end portion of the motor downstream filter abuts against the transverse partition.
[0008] In the above technical solution, preferably, the housing includes a peripheral side wall and an upper cover assembly detachably mounted on the top of the peripheral side wall, and the motor downstream filter is supported by the upper cover assembly.
[0009] In the above technical solution, preferably, the handheld vacuum cleaner also includes: a handle, which is located on the rear side of the shell; and a short dust suction tube, which is located on the front side of the shell, and the multiple exhaust ports are distributed on the left or right side of the shell.
[0010] In the above technical solution, preferably, each of the plurality of exhaust ports is provided with an air guiding slope inclined forward.
[0011] In the above technical solution, preferably, the wind guide slope is inclined forward at an angle of 5-80°.
[0012] In the above technical solution, preferably, the handheld vacuum cleaner further includes: a battery pack, the battery pack is located at the rear side of the cyclone separation device, and the handle is located between the battery pack and the shell.
[0013] In the above technical solution, preferably, the handle is in an inverted L-shape, and a plurality of control switches are arranged on the handle.
[0014] In the above technical solution, preferably, the cyclone separation device has a first cyclone separation chamber and a second cyclone separation chamber, the second cyclone separation chamber is located inside the first cyclone separation chamber and the rotation axes of the two are collinear.
[0015] In the technical solution of the present application, the exhaust path length from the motor air outlet to the multiple exhaust outlets is extended by adding an exhaust cavity extending up and down, thereby increasing the pressure loss of the airflow flowing from the motor air outlet to the multiple exhaust outlets, thereby reducing the noise of the airflow exhaust process, making the operator more comfortable and pleasant when using the vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional schematic diagram of a handheld vacuum cleaner provided in an embodiment of the present application;
[0017] Figure 2 for Figure 1 A partially disassembled diagram of a handheld vacuum cleaner is shown;
[0018] Figure 3 for Figure 1 A schematic top view of a handheld vacuum cleaner is shown;
[0019] Figure 4 for Figure 1 A schematic front view of the handheld vacuum cleaner shown;
[0020] Figure 5 for Figure 1 A main cross-sectional view of the housing, cyclone separation device and dust suction short pipe portion of the handheld vacuum cleaner shown;
[0021] Figure 6 for Figure 3 The handheld vacuum cleaner shown is a schematic cross-sectional view of the handheld vacuum cleaner taken along the AA direction;
[0022] Figure 7 for Figure 3 The handheld vacuum cleaner shown is a schematic cross-sectional view of the handheld vacuum cleaner taken along direction BB;
[0023] Figure 8 for Figure 4 The handheld vacuum cleaner shown is a schematic cross-sectional view of the handheld vacuum cleaner taken along direction CC.
[0024] Among them: 100, handheld vacuum cleaner; 1, shell; 2, cyclone separation device; 3, handle; 4, battery pack; 5, short dust suction tube; 6, suction motor; 21, dust cup; 22, filter element; 23, dust cover; 221, mesh filter wall; 222, cyclone separation cone; 223, air guide; 224, ash storage pipe; 24, first cyclone separation chamber; 25, second cyclone separation chamber; 26, motor upstream filter; 61, motor; 62, wind wheel assembly; 31, control switch; 32, display screen; 7, motor cover; 71, motor air outlet; 8, motor downstream filter; 9, exhaust chamber; 911, through hole; 91, horizontal partition; 901, upper chamber; 902, lower chamber; 10, exhaust port; 11, peripheral side wall; 12, upper cover assembly; 101, guide rib. DETAILED DESCRIPTION
[0025] In order to describe the technical content, structural features, achieved purpose and effect of the utility model in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the utility model. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the concept of the utility model, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.
[0026] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, which illustrates a handheld vacuum cleaner 100 of the present application, comprising a housing 1, a cyclonic separation device 2 detachably mounted on the underside of the housing 1, a handle 3 fixedly attached to the rear of the housing 1, a battery pack 4 fixedly disposed below the handle 3 and located behind the cyclonic separation device 2, a short suction tube 5 fixedly attached to the front of the housing 1, and a suction motor 6 mounted inside the housing 1. The short suction tube 5 defines a transverse centerline X extending in the front-to-back direction. The cyclonic separation device 2 defines a longitudinal centerline Y extending in the up-down direction. The transverse centerline X is perpendicular to the longitudinal centerline Y.
[0027] The housing 1 is cylindrical, with its center line being the longitudinal center line Y. The housing 1 and the cyclone separation device 2 have substantially the same outer contour radius.
[0028] The cyclone separation device 2 includes a dust cup 21 and a filter element 22 located inside the dust cup 21. The upper part of the dust cup 21 is detachably connected to the lower part of the housing 1, and the lower part of the dust cup 21 has an openable dust cover 23. The filter element 22 is installed at the lower part of the housing 1 and is located inside the dust cup 21. The filter element 22 can also be removed from the housing 1 after the dust cup 21 is removed. The filter element 22 includes a mesh filter wall 221, a cyclone separation cone 222 located inside the mesh filter wall 221, an air guide pipe 223 located between the mesh filter wall 221 and the cyclone separation cone 222, and an ash storage pipe 224 located at the lower part of the cyclone separation cone 222. A first cyclone separation chamber 24 is formed between the dust cup 21 and the mesh filter wall 221. The inner side of the cyclone separation cone 222 defines a second cyclone separation chamber 25. The rotation axis of the second cyclone separation chamber 25 is colinear with the rotation axis of the first cyclone separation chamber 24 and both fall on the longitudinal center line Y. The lower portion of the ash storage pipe 224 is open and in sealing contact with the middle portion of the dust cover 23 .
[0029] The upper portion of the filter core 22 is provided with a motor upstream filter 26. In this example, the motor upstream filter 26 is supported on the upper portion of the filter core 22; when the operator removes the filter core 22 from the housing 1, the motor upstream filter 26 will also be removed together.
[0030] The suction motor 6 is located within the housing 1, above the motor upstream filter 26. Airflow exiting the second cyclonic separation chamber 25 passes through the motor upstream filter 26 before flowing toward the suction motor 6. The suction motor 6 consists of an electric motor 61 and a wind wheel assembly 62. Since the suction motor 6 is a common component in the vacuum cleaner industry, its detailed description is omitted here.
[0031] The handle 3 is in an inverted L-shape, and a plurality of control switches 31 and a display screen 32 are arranged on the handle 3 .
[0032] The battery pack 4 is used to power various energy-consuming components of the handheld vacuum cleaner 100, such as the suction motor 6. In this example, the battery pack 4 is housed in a battery pack housing (not shown) located behind the dust cup 21; the battery pack housing and the handle 3 form an integral component.
[0033] A motor cover 7 is provided in the housing 1. The suction motor 6 is installed in the motor cover 7. The motor cover 7 is provided with a plurality of motor air outlets 71.
[0034] Housing 1 also houses a motor downstream filter 8, which is sleeved onto the outside of motor cover 7. An exhaust cavity 9 is also defined between the inner wall of housing 1 and motor downstream filter 8. This cavity 9 extends vertically. Airflow from motor outlet 71 first passes through motor downstream filter 8 before entering cavity 9. This cavity 9 effectively reduces airflow noise.
[0035] like Figure 5 As shown, a transverse partition 91 having a plurality of through-holes 911 is disposed in the middle of the exhaust chamber 9. This transverse partition 91 divides the exhaust chamber 9 into an upper chamber 901 and a lower chamber 902. The motor air outlet 71 is located in the upper chamber 901 of the exhaust chamber 9. The motor downstream filter 8 is located in the upper chamber 901, with the lower end of the motor downstream filter 8 abutting the transverse partition 91.
[0036] The airflow flowing into the upper chamber 901 can flow to the lower chamber 902 through the plurality of through holes 911 of the transverse partition 91. These through holes 911 can also play a role in noise reduction.
[0037] Continue as Figure 2 、 Figure 3 As shown, a plurality of exhaust ports 10 are provided on the shell 1 , which are located on the lower side of the transverse partition 91 and connect the lower chamber 902 with the outside atmosphere; in this way, the airflow flowing into the lower chamber 902 can be discharged to the outside through these exhaust ports 10 .
[0038] A plurality of exhaust ports 10 are located on the right side of the housing 1 and are distributed near the dust cup 21. This arrangement allows the exhaust ports 10 to be kept away from the operator. In other examples, the exhaust ports may also be arranged on the left side of the housing.
[0039] The housing 1 includes a peripheral side wall 11 and an upper cover assembly 12 detachably mounted on top of the peripheral side wall 11. The motor downstream filter 8 is supported by the upper cover assembly 12. This structure makes it easy for the operator to remove the motor downstream filter 8 for cleaning or replacement.
[0040] like Figure 8 As shown, a plurality of guide ribs 101 arranged side by side are provided on the right side of the housing 1 ; an exhaust port 10 is defined between adjacent guide ribs 101 .
[0041] The opening direction of each exhaust port 10 is inclined toward the front side. In this example, the opening direction F of the exhaust port 10 is within the angle range α of 5° to 80° relative to the transverse center line X.
[0042] Continue as Figure 6 、 Figure 7 When the suction motor 6 is started, negative pressure is generated within the cyclone separation device 2, causing the dust-laden airflow to be sucked in through the dust suction short pipe 5. The dust-laden airflow first enters the first cyclone separation chamber 24 for gas-solid separation, with large dust particles trapped in the dust cup 21. The air, along with small dust particles, flows from the first cyclone separation chamber 24 into the second cyclone separation chamber 25 for further gas-solid separation, with the small dust particles falling into the ash storage pipe 224 at the bottom of the cyclone separation cone 21. The airflow from the second cyclone separation chamber 25 passes through the motor upstream filter 26 and flows to the suction motor 6. It then flows out of the motor air outlet 71 of the motor cover 7, passes through the motor downstream filter 8, and enters the exhaust chamber 9. From the upper chamber 901 of the exhaust chamber 9, it flows downward through the through-holes 911 of the transverse partition 91, flows into the lower chamber 902, and is then discharged to the outside atmosphere through multiple exhaust ports 10.
[0043] After using the handheld vacuum cleaner 100, the dust cup 21 and the dust storage tube 224 can be discharged by opening the dust cover 23. After removing the dust cup 21 and the filter element 22, the motor upstream filter 26 can be removed for cleaning or replacement. After the operator removes the upper cover assembly 12, the motor downstream filter 8 can be removed for cleaning or replacement.
[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims, the description and their equivalents.
Claims
1. A handheld vacuum cleaner comprising a housing, a cyclone separation device disposed on the lower side of the housing, and a suction motor mounted on the inner side of the housing, characterized in that: A motor cover is provided on the inner side of the shell, and the suction motor is placed on the inner side of the motor cover. A motor downstream filter is provided between the shell and the motor cover. An exhaust cavity extending up and down is defined between the motor downstream filter and the inner wall surface of the shell. A motor air outlet is provided on the motor cover, and a plurality of exhaust ports connecting the exhaust cavity with the outside atmosphere are arranged at the lower part of the shell.
2. The handheld vacuum cleaner according to claim 1, characterized in that A transverse partition with a plurality of through holes is provided in the middle of the exhaust cavity, and the plurality of exhaust ports are located on the lower side of the transverse partition.
3. The handheld vacuum cleaner according to claim 2, characterized in that The lower end portion of the motor downstream filter abuts against the transverse partition.
4. The handheld vacuum cleaner according to claim 2, characterized in that The shell includes a peripheral side wall and an upper cover assembly detachably mounted on the top of the peripheral side wall, and the motor downstream filter is supported by the upper cover assembly.
5. The handheld vacuum cleaner according to claim 1, characterized in that: Also includes: a handle, the handle being located at the rear side of the shell; and a dust suction short pipe, which is located at the front side of the shell and defines a transverse center line extending along the front and rear, and the multiple exhaust ports are distributed on the left side or the right side of the shell.
6. The handheld vacuum cleaner according to claim 5, characterized in that The mouth of each of the exhaust ports is inclined toward the front.
7. The handheld vacuum cleaner according to claim 6, characterized in that The direction of the mouth of the exhaust port is within a range of 5° to 80° relative to the transverse center line.
8. The handheld vacuum cleaner according to claim 5, characterized in that: Also includes: A battery pack is located at the rear side of the cyclone separation device, and the handle is located between the battery pack and the shell.
9. The handheld vacuum cleaner according to claim 7, characterized in that: The handle is in an inverted L shape, and a plurality of control switches are arranged on the handle.
10. The handheld vacuum cleaner according to claim 1, characterized in that The cyclone separation device comprises a first cyclone separation chamber and a second cyclone separation chamber. The second cyclone separation chamber is located inside the first cyclone separation chamber and the rotation axis lines of the second cyclone separation chamber are collinear.