CN112690696B - Suction nozzle assembly and cleaning robot - Google Patents
Suction nozzle assembly and cleaning robotInfo
- Publication number
- CN112690696B CN112690696B CN202011637526.2A CN202011637526A CN112690696B CN 112690696 B CN112690696 B CN 112690696B CN 202011637526 A CN202011637526 A CN 202011637526A CN 112690696 B CN112690696 B CN 112690696B
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- suction nozzle
- air outlet
- suction
- shell
- nozzle assembly
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Abstract
本发明公开了一种吸嘴组件，包括吸嘴本体，吸嘴本体上设置有壳体，壳体上设置有倾斜侧壁，吸嘴本体和壳体形成有吸尘腔室，吸嘴本体的底面设置有进风口，壳体上开设有出风口，气流从进风口进入流经吸尘腔室从出风口排出使得流经吸尘腔室的气流分布均匀。还公开了一种清洁机器人，包括如以上所述的吸嘴组件。本发明提供的吸嘴组件降低出风口距离地面的高度，提高吸尘腔室内的平均风速有利于漩涡气流的发生，增强卷吸效果，从而提高对地面的吸力和负压水平，加强了出风口下方的吸力，表现为对尘粒输送能力的增强；加大两侧至吸嘴本体的过渡区域,使得吸力水平更加均衡,减少因吸力薄弱造成的尘粒泄漏。
The present invention discloses a nozzle assembly, including a nozzle body, a shell provided on the nozzle body, an inclined side wall provided on the shell, the nozzle body and the shell forming a dust collection chamber, an air inlet provided on the bottom surface of the nozzle body, an air outlet provided on the shell, air flow enters from the air inlet, flows through the dust collection chamber, and is discharged from the air outlet, so that the air flow passing through the dust collection chamber is evenly distributed. Also disclosed is a cleaning robot, including the nozzle assembly as described above. The nozzle assembly provided by the present invention reduces the height of the air outlet from the ground, increases the average wind speed in the dust collection chamber, is conducive to the occurrence of vortex airflow, enhances the suction effect, thereby increasing the suction force and negative pressure level on the ground, strengthens the suction force below the air outlet, and manifests as an enhancement of the dust particle conveying capacity; enlarges the transition area from both sides to the nozzle body, makes the suction level more balanced, and reduces the leakage of dust particles caused by weak suction.
Description
Technical Field
The invention belongs to the field of cleaning robots, and particularly relates to a suction nozzle assembly and a cleaning robot.
Background
The cleaning robot is a household appliance for absorbing dust particles on the ground by utilizing high negative pressure generated by a fan, wherein a suction nozzle is an inlet of a pneumatic system of an air duct of the whole machine and is also a part for collecting and absorbing the dust particles. In order to improve the cleaning efficiency of the whole machine, the rotating speed of a fan is generally increased in the industry, or a larger type fan is selected to increase the air quantity and the air pressure of a pneumatic system, but the working energy consumption and the noise are also increased.
When the air speed of the suction nozzle cavity close to the ground is larger than the suspension speed of dust particles, the dust particles can be lifted, and the flow speed below the suction pipe is gradually reduced from top to bottom. The design of the traditional suction nozzle dust collection cavity increases the space below the suction pipe and the ground height of the suction pipe, so that the average wind speed in the cavity is lower, particularly the wind speed near the ground is lower, and the suction force of the suction pipe to the ground is weaker, therefore, dust particles are continuously gathered below the suction pipe and are not lifted up, and leakage is easy to occur. The traditional suction nozzle has large outlet area, high suction port speed attenuation, small suction port suction force, small suction force on two sides and uneven overall suction force distribution, and is easy to cause dust particle side leakage caused by weak suction force.
Disclosure of Invention
In order to solve the problem that the suction force of the suction nozzle of the cleaning robot is uneven, and the side leakage phenomenon of dust particles is easy to occur, so that the cleaning efficiency is low, the invention provides a suction nozzle assembly and the cleaning robot, which solve the problems that the negative pressure distribution and the air flow movement inside the suction nozzle in the prior art are not beneficial to the suction and the transportation of dust particles on the ground, the dust particles are easy to leak in the middle of the suction nozzle, the suction nozzle assembly has the advantages that negative pressure distribution and airflow movement tracks in the suction nozzle are improved, the effect of vortex airflow is enhanced, the suction force of the suction pipe on the ground and the dust particle conveying capability are correspondingly improved, the absorption time is shorter, dust particle leakage caused by weak suction force is avoided, the suction level of each part is more balanced, and the cleaning performance is improved.
In order to achieve the above object, the specific technical scheme of the suction nozzle assembly and the cleaning robot of the invention is as follows:
The utility model provides a suction nozzle assembly, includes the suction nozzle body, is provided with the casing on the suction nozzle body, is provided with the slope lateral wall on the casing, and suction nozzle body and casing are formed with dust absorption cavity, and the bottom surface of suction nozzle body is provided with the air intake, has seted up the air outlet on the casing, and the air current gets into from the air intake and flows through dust absorption cavity and discharge from the air outlet and make the air current distribution that flows through dust absorption cavity even.
Further, a rolling brush chamber is formed in the suction nozzle body, a rolling brush body is arranged in the rolling brush chamber, an airflow channel is formed in the rolling brush chamber, and airflow flows through the airflow channel from the air inlet to the air outlet.
Further, the bottom surface of the shell is provided with an opening, the opening is communicated with the suction nozzle body to form a dust collection cavity, and the air outlet is arranged on the top surface of the shell.
Further, the vertical distance from the center of the air outlet to the bottom surface of the suction nozzle body is defined as H, and the length of the bottom surface of the suction nozzle body is set to be L, wherein H/L is more than or equal to 0.1 and less than or equal to 0.2.
Further, the length of the air outlet is set as A, the width of the air outlet is set as B, and the relation is 0.3-0.45,0.08-0.12.
Further, one end of the inclined side wall is connected with the air outlet, the other end of the inclined side wall is fixedly connected with the bottom surface of the shell, and the bottom end of the inclined side wall is provided with a distance from the end of the bottom surface of the shell.
Further, an included angle is formed between the inclined side wall and the horizontal plane where the bottom surface of the bottom shell is located, and the included angle is set to be alpha, and alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.
Further, inclined side walls are respectively arranged at two ends of the air outlet in the length direction, the distance between each inclined side wall and one end of the bottom surface of the shell is set to be L1, and the distance between each inclined side wall and the other end of the bottom surface of the shell is set to be L2, wherein L1/L is more than or equal to 0.02 and less than or equal to 0.04,0.02 and L2/L is more than or equal to 0.040.
Further, the air outlet is connected with an air duct, a dust box is arranged in the air duct, and a fan is arranged at one end of the dust box.
A cleaning robot comprising a nozzle assembly as described above.
The suction nozzle assembly has the advantages that the height of the air outlet from the ground is reduced, the average wind speed in the dust collection cavity is increased, vortex airflow is facilitated, the entrainment effect is enhanced, the suction force and the negative pressure level on the ground are improved, the suction force below the air outlet is enhanced, the dust particle conveying capacity is enhanced, the transition area from two sides to the suction nozzle body is enlarged, the suction force level is more balanced, and dust particle leakage caused by weak suction force is reduced.
Drawings
FIG. 1 is a cross-sectional view of a prior art suction nozzle assembly;
FIG. 2 is a cross-sectional view of a suction nozzle assembly of the present invention;
FIG. 3 is a partial structural cross-sectional view of the suction nozzle assembly of the present invention;
FIG. 4 is a schematic view of a portion of a suction nozzle assembly of the present invention;
FIG. 5 is a side view of a portion of the structure of the suction nozzle assembly of the present invention;
FIG. 6 is a schematic view of a region where the internal static pressure of a nozzle assembly is less than-250 Pa in the prior art;
FIG. 7 is a schematic view of suction distribution of a suction nozzle assembly of the prior art at 0.5mm near the wall;
FIG. 8 is a schematic view of a region of the suction nozzle assembly of the present invention having an internal static pressure of less than-250 Pa;
FIG. 9 is a schematic view of suction distribution of the suction nozzle assembly of the present invention at 0.5mm near the wall.
The figure indicates:
1. A suction nozzle body; 11, an air outlet, 12, a dust collection chamber, 13, an air inlet, 14, a rolling brush chamber, 15, a shell, 2, a rolling brush body, 3, a dust box, 4, an air duct, 5, a fan, 6 and an airflow channel.
Detailed Description
For a better understanding of the objects, structures and functions of the present invention, a nozzle assembly and a cleaning robot according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the suction nozzle assembly in the prior art includes a suction nozzle body 1, and the air outlet 11 of the suction nozzle body 1 is generally increased to the ground height and the dust collection chamber 12 so that the average air speed in the cavity is low, especially the air speed near the ground is low, the suction force to the ground is weak, and dust particles are continuously gathered below the suction pipe, so that the dust particles are not lifted and are easy to leak.
As shown in fig. 2, the invention provides a suction nozzle assembly, which comprises a suction nozzle body 1, wherein a shell 15 is arranged on the suction nozzle body 1, an inclined side wall is arranged on the shell 15, a dust collection cavity 12 is formed by the suction nozzle body 1 and the shell 15, an air inlet 13 is arranged on the bottom surface of the suction nozzle body 1, an air outlet 11 is arranged on the shell 15, and air flows enter from the air inlet 13 and flow through the dust collection cavity 12 and are discharged from the air outlet 11, so that the air flows through the dust collection cavity 12 are uniformly distributed.
As shown in fig. 3, a rolling brush chamber 14 is formed in the nozzle body 1, a rolling brush body 2 is arranged in the rolling brush chamber 14, an airflow channel 6 is formed in the rolling brush chamber 14, and airflow flows through the airflow channel 6 from an air inlet 13 to an air outlet 11.
The bottom surface of the shell 15 is provided with an opening, the opening is communicated with the suction nozzle body 1 to form a dust collection cavity 12, and the air outlet 11 is arranged on the top surface of the shell 15, so that the rolling brush rolls to enable sucked air to flow into the air outlet 11 through the air inlet 13.
The rolling brush body 2 is connected with a driving motor, and the driving motor is arranged in the suction nozzle body 1, so that the driving motor drives the rolling brush body 2 to rotate to realize the flow of air flow.
In order to improve the average wind speed in the dust collection chamber 12, the vertical distance from the center of the air outlet 11 to the bottom surface of the suction nozzle body 1 is defined as H, the length of the bottom surface of the suction nozzle body 1 is set as L, the ratio of H/L is set as 0.1-0.2, the height of the suction port is properly reduced, the average wind speed in the dust collection chamber 12 can be fully improved, the generation of vortex airflow is facilitated, the entrainment effect is enhanced, the suction force and the negative pressure level to the ground are improved, in particular, the suction force of the dust collection chamber 12 is enhanced, and the overall performance is enhanced.
As shown in FIG. 4, in order to increase the suction force of the air outlet 11 of the housing 15 and to avoid the flow loss caused by the excessively small suction port surface and the insufficient suction force caused by the excessively large suction port area, the length of the air outlet 11 is set to A, the width of the air outlet 11 is set to B, and the relation of 0.3-0.45,0.08-0.12 is satisfied.
One end of the inclined side wall is connected with the air outlet 11, the other end of the inclined side wall is fixedly connected with the bottom surface of the shell 15, and the bottom end of the inclined side wall is provided with a distance from the end of the bottom surface of the shell 15.
As shown in FIG. 5, an included angle is formed between the inclined side wall and the horizontal plane of the bottom surface of the bottom shell, and the included angle is set to be alpha, and alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.
The two ends of the air outlet 11 in the length direction are respectively provided with an inclined side wall, the distance between the inclined side wall and one end of the bottom surface of the shell 15 is set to be L1, the distance between the inclined side wall and the other end of the bottom surface of the shell 15 is set to be L2, L1/L is more than or equal to 0.02 and less than or equal to 0.04,0.02 and L2/L is less than or equal to 0.040, and the preferable L1 = L2, so that the transition area from two sides to the air outlet 11 is enlarged, and the suction distribution of the dust collection cavity 12 is more uniform.
As shown in fig. 6 and 7, which are simulation diagrams showing suction distribution of the suction nozzle assembly in the prior art, as shown in fig. 8 and 9, which are simulation diagrams showing suction distribution of the suction nozzle assembly in the present application, it can be seen from simulation results that the area of negative pressure < -250Pa in the cavity of the conventional suction nozzle assembly is mainly concentrated in the suction pipe near the suction end and the suction pipe at the upper end of the suction chamber 12, and the negative pressure at the lower end and other partial areas of the suction chamber 12 is not high, resulting in poor adsorption capability of the suction nozzle assembly to dust particles on the floor and the periphery of the suction nozzle. The suction nozzle component has the advantages that the area of negative pressure < -250pa in the suction nozzle component is obviously enlarged, the suction force at the position which is 0.5mm close to the wall surface is increased from 120pa to 160pa, the suction force extends to the ground and the two sides of the suction port, the pressure difference between the suction nozzle component and the outside of the suction nozzle component is improved, dust particles on the ground and the periphery can be adsorbed with higher intensity, the suction force level is more balanced, and the dust particle leakage caused by weak suction force is reduced.
Based on the theoretical analysis, the application also makes a test, and the following test data analysis and comparison fully show that the suction nozzle assembly can enhance the dust particle conveying capability and ensure that the suction force is uniformly distributed, thereby improving the dust collection efficiency. Table 1 shows the effect of height H on dust removal efficiency as shown in the following table:
TABLE 1
| Scheme for the production of a semiconductor device | H/L | A/L | B/L | L1/L | L2/L | α | Standard ash | Soybean |
| Comparative example | 0.3 | 0.4 | 0.1 | 0.03 | 0.03 | 15 | 88% | 94.3% |
| Preferred embodiment | 0.15 | 0.4 | 0.1 | 0.03 | 0.03 | 15 | 95% | 98.6% |
As shown in Table 1, when the H/L is 0.3 in the comparative example, and the preferred scheme is 0.15, the suction rate of standard ash and soybean is larger than that of the comparative example, which fully shows that the suction port height is properly reduced within the range of 0.1-0.2, the average wind speed in the cavity can be fully improved, the generation of vortex airflow is facilitated, the entrainment effect is enhanced, and the suction force and the negative pressure level to the ground are improved.
As shown in table 2, table 2 shows the effect of the air outlet length a and width B on the dust removal efficiency.
TABLE 2
| Scheme for the production of a semiconductor device | H/L | A/L | B/L | L1/L | L2/L | α | Standard ash | Soybean |
| Comparative example | 0.15 | 0.5 | 0.14 | 0.03 | 0.03 | 15 | 87% | 93% |
| Preferred embodiment | 0.15 | 0.4 | 0.1 | 0.03 | 0.03 | 15 | 95% | 98.6% |
As shown in table 2, the comparative example selects a/l=0.5 and b/l=0.14 to increase the suction force of the suction nozzle air outlet 11 while avoiding the flow loss caused by the excessively small suction surface of the suction nozzle and the suction force shortage caused by the excessively large suction surface area.
As shown in table 3, table 3 shows the effect of L1 and L2 on dust removal efficiency.
TABLE 3 Table 3
As shown in table 3, preferably l1=l2, i.e. the transition area from two sides to the suction nozzle is enlarged, the area of negative pressure < -250pa in the suction nozzle body 1 is obviously enlarged, the suction force of 0.5mm near the wall surface is lifted from 120pa to 160pa, and extends to the ground and two sides of the suction port, so that the pressure difference between the suction nozzle and the outside of the suction nozzle is greatly increased, and dust particles on the ground and the periphery can be adsorbed with greater intensity. The suction level is more balanced, and dust particle leakage caused by weak suction is reduced.
As shown in table 4, table 4 shows the effect of angle α on dust removal efficiency.
TABLE 4 Table 4
| Scheme for the production of a semiconductor device | H/L | A/L | B/L | L1/L | L2/L | α | Standard ash | Soybean |
| Comparative example 1 | 0.15 | 0.4 | 0.1 | 0.05 | 0.05 | 3 | 93% | 96.1% |
| Comparative example 2 | 0.15 | 0.4 | 0.1 | 0.05 | 0.05 | 30 | 92% | 94.5 |
| Preferred embodiment | 0.15 | 0.4 | 0.1 | 0.03 | 0.03 | 15 | 95% | 98.6% |
The adsorption forces of the standard ash and the soybean were 93% and 96.1% respectively when the angle was selected to be 3 ° in comparative example 1, 92% and 94.5% respectively when the angle was selected to be 30 ° in comparative example 2, and 95% and 98.6% respectively when the angle was selected to be 15 ° in the preferred embodiment. From the above data, it is apparent that the adsorption rate of standard ash and soybean is significantly improved when the angle is selected to be 15 °.
The air outlet 11 is connected with the wind channel 4, is provided with the dirt box 3 in the wind channel 4, and the one end of dirt box 3 is provided with fan 5 to fan 5 rotates the circulation that realizes the air current.
The invention also provides a cleaning robot comprising the suction nozzle assembly. One side of the dust box is connected with a suction pipe, thereby improving the cleaning efficiency of the cleaning robot.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention.
In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A suction nozzle assembly is characterized by comprising a suction nozzle body (1), wherein a shell (15) is arranged on the suction nozzle body (1), inclined side walls are arranged on the shell (15), a dust collection cavity (12) is formed between the suction nozzle body (1) and the shell (15), an air inlet (13) is formed in the bottom surface of the suction nozzle body (1), an air outlet (11) is formed in the shell (15), air flows enter the dust collection cavity (12) from the air inlet (13) and are discharged from the air outlet (11) so that the air flows through the dust collection cavity (12) are uniformly distributed, an included angle is formed between the inclined side walls and the horizontal plane of the bottom surface of a bottom shell, the included angle is set to be alpha, the alpha is less than or equal to 20 degrees, the distance between the inclined side walls and one end of the bottom surface of the shell (15) is set to be L1, the distance between the inclined side walls and the other end of the bottom surface of the shell (15) is set to be L2, L1/L0.04,0.02L 2/L2 is less than or equal to 0.040, L1=L 2, accordingly the area from two sides to the air outlet (11) is increased, and the suction cavity is uniformly distributed on the bottom surface (12), and the suction nozzle is more uniformly distributed on the bottom surface (1).
2. The suction nozzle assembly according to claim 1, wherein a rolling brush chamber (14) is formed in the suction nozzle body (1), a rolling brush body (2) is arranged in the rolling brush chamber (14), an air flow channel (6) is formed in the rolling brush chamber (14), and air flows from the air inlet (13) through the air flow channel (6) to the air outlet (11).
3. The suction nozzle assembly according to claim 1, characterized in that the bottom surface of the housing (15) is provided with an opening, the opening is communicated with the suction nozzle body (1) to form a dust collection chamber (12), and the air outlet (11) is arranged on the top surface of the housing (15).
4. The suction nozzle assembly as claimed in claim 1, characterized in that the vertical distance from the bottom surface of the suction nozzle body (1) at the center of the air outlet (11) is defined as H, 0.1-0.2.
5. The suction nozzle assembly as claimed in claim 1, wherein the length of the air outlet (11) is set to be A, the width of the air outlet (11) is set to be B, and the relation of A/L which is more than or equal to 0.3 and less than or equal to 0.45,0.08 and B/L which is more than or equal to 0.12 is satisfied.
6. The suction nozzle assembly as claimed in claim 1, characterized in that one end of the inclined side wall is connected to the air outlet (11), the other end of the inclined side wall is fixedly connected to the bottom surface of the housing (15), and a space is provided between the bottom end of the inclined side wall and the end of the bottom surface of the housing (15).
7. The suction nozzle assembly according to claim 1, characterized in that the air outlet (11) is connected with an air duct (4), a dust box (3) is arranged in the air duct (4), and a fan (5) is arranged at one end of the dust box (3).
8. A cleaning robot comprising the suction nozzle assembly of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011637526.2A CN112690696B (en) | 2020-12-31 | 2020-12-31 | Suction nozzle assembly and cleaning robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011637526.2A CN112690696B (en) | 2020-12-31 | 2020-12-31 | Suction nozzle assembly and cleaning robot |
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| Publication Number | Publication Date |
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| CN112690696A CN112690696A (en) | 2021-04-23 |
| CN112690696B true CN112690696B (en) | 2025-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011637526.2A Active CN112690696B (en) | 2020-12-31 | 2020-12-31 | Suction nozzle assembly and cleaning robot |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243820A (en) * | 2021-05-19 | 2021-08-13 | 上海高仙自动化科技发展有限公司 | Floor brush assembly and cleaning robot |
| CN113413085B (en) * | 2021-07-27 | 2022-12-02 | 苏州高之仙自动化科技有限公司 | Cleaning robot |
| CN113679284A (en) * | 2021-09-02 | 2021-11-23 | 苏州高之仙自动化科技有限公司 | Rolling brush mechanism and cleaning robot |
| CN114794989B (en) * | 2022-05-23 | 2024-05-14 | 深圳市无限动力发展有限公司 | Floor sweeping machine |
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|---|---|---|---|---|
| CN1768672A (en) * | 2004-11-03 | 2006-05-10 | 三星光州电子株式会社 | Suction Inlet Assembly for Vacuum Cleaners |
| CN214342117U (en) * | 2020-12-31 | 2021-10-08 | 珠海格力电器股份有限公司 | Suction nozzle assembly and cleaning robot |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003063673A1 (en) * | 2002-01-25 | 2003-08-07 | Alton James R | Vacuum cleaner nozzle assembly having edge-cleaning ducts |
| ATE519411T1 (en) * | 2004-03-16 | 2011-08-15 | Lg Electronics Inc | SUCTION NOZZLE AND VACUUM CLEANER HEAD WITH SAME |
| CN201282954Y (en) * | 2008-09-26 | 2009-08-05 | 杭州明强智能科技有限公司 | Pump type vacuum cleaner |
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2020
- 2020-12-31 CN CN202011637526.2A patent/CN112690696B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768672A (en) * | 2004-11-03 | 2006-05-10 | 三星光州电子株式会社 | Suction Inlet Assembly for Vacuum Cleaners |
| CN214342117U (en) * | 2020-12-31 | 2021-10-08 | 珠海格力电器股份有限公司 | Suction nozzle assembly and cleaning robot |
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