CN106108778B - Dust collector floor brush and dust collector - Google Patents
Dust collector floor brush and dust collector Download PDFInfo
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- CN106108778B CN106108778B CN201610669310.1A CN201610669310A CN106108778B CN 106108778 B CN106108778 B CN 106108778B CN 201610669310 A CN201610669310 A CN 201610669310A CN 106108778 B CN106108778 B CN 106108778B
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- floor brush
- air
- vacuum cleaner
- dust collector
- cleaned
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
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- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
The invention discloses a dust collector floor brush and a dust collector with the same, wherein the dust collector floor brush comprises: the air-tight dust collector comprises a body and a front dust collecting strip, wherein an air outlet channel is limited in the body, a suction port communicated with the air channel is formed in a bottom plate of the body, an air outlet is formed in the rear side of the body, and an air-tight space is formed between the air channel and the surface to be cleaned when the body covers the surface to be cleaned; the front dust collecting strip is arranged at the front end of the body to support the dust collector floor brush on the surface to be cleaned, a plurality of front air inlets communicated with the air channel are formed in the front dust collecting strip, and the front dust collecting strip is inclined relative to the normal direction of the surface to be cleaned. According to the floor brush of the dust collector, the air duct of the floor brush of the dust collector is optimized, the airflow flowing state in the floor brush of the dust collector is improved, the dust removing capacity of the floor brush of the dust collector is effectively improved, the noise of the floor brush of the dust collector is reduced, and the floor brush of the dust collector is simple in structure and low in cost.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a dust collector floor brush and a dust collector.
Background
In the related art, a vacuum cleaner such as a vacuum cleaner is a home appliance that sucks foreign substances such as dust and hair to achieve a cleaning effect by generating a negative pressure. The performance of a vacuum cleaner depends mainly on two factors: dust removal capacity and noise, both of which are closely related to the air duct of the floor brush. The dust removing capacity is determined by the suction force generated by the dust collector host, but on the premise that the dust collector host is determined, the air duct structure of the floor brush, such as the effective area of the air inlet of the floor brush, the ground clearance and the like, determines the speed distribution and the pressure distribution inside the floor brush when the air flow enters the floor brush, and further influences the dust removing effect. The noise sources of the dust collector are mainly a main machine and a floor brush. The main machine generates noise due to high-speed operation and mechanical vibration of an internal motor, and the noise of the floor brush is mainly pneumatic noise generated by high-speed flow of air flow and is directly influenced by an air duct of the floor brush.
However, the dust removing capacity and noise of the dust collector are often a pair of contradictory indexes: increasing the dust removal capacity requires increasing the speed of the airflow entering the floor brush, and increasing the flow rate generally results in increased aerodynamic noise; reducing the flow rate reduces the aerodynamic noise, but also reduces the dust removal capacity.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a floor brush for a vacuum cleaner, which has a strong dust removing ability, a low noise, a simple structure and a low cost.
Another object of the present invention is to provide a vacuum cleaner having the above vacuum cleaner floor brush.
A cleaner floor brush according to a first aspect of the present invention comprises: the air-out channel is limited in the body, a suction port communicated with the air channel is formed in a bottom plate of the body, an air exhaust port is formed in the rear side of the body, and an air-tight space is formed between the air channel and the surface to be cleaned when the body covers the surface to be cleaned; the front dust collecting strip is arranged at the front end of the body to support the dust collector floor brush on the surface to be cleaned, a plurality of front air inlets communicated with the air duct are formed in the front dust collecting strip, and the front dust collecting strip is inclined relative to the normal direction of the surface to be cleaned.
According to the dust collector floor brush, the front dust collecting strips are obliquely arranged relative to the normal direction of the surface to be cleaned, so that the air duct of the dust collector floor brush is optimized, the air flow state in the dust collector floor brush is improved, the dust removing capacity of the dust collector floor brush is effectively improved, and the noise of the dust collector floor brush is reduced. In addition, set up gyro wheel, fan or set up the amortization chamber on the scrubbing brush body with traditional in the dust catcher scrubbing brush, fill the scheme of making an uproar of falling of inhaling the sound medium and compare, the dust catcher scrubbing brush simple structure and with low costs in this scheme.
In addition, the dust collector floor brush according to the invention can also have the following additional technical characteristics:
according to some embodiments of the present invention, the angle α between the front dust bars and the normal direction of the surface to be cleaned satisfies 30 ° ≦ α ≦ 60 °.
Optionally, the angle α between the front dust bars and the normal direction of the surface to be cleaned satisfies α ═ 45 °.
According to some embodiments of the invention, a distance a between the upper end of the front air inlet and the bottom plate satisfies: a is more than or equal to 3 mm.
According to some embodiments of the invention, the plurality of front air ports are arranged symmetrically with respect to a central symmetry plane of the body, and distances between adjacent front air ports are unequal.
Specifically, the distance between adjacent front air ports gradually decreases in a direction toward the central symmetry plane.
According to some embodiments of the invention, the sum of the areas of the plurality of front air inlets S1 satisfies: 200mm2≤S1≤400mm2。
Further, at least one side of the body is also provided with a side air inlet communicated with the air duct.
Specifically, the height of the side intake port is smaller than the height of the front intake port, and the depth d of the side intake port satisfies: d is more than or equal to 5 mm.
Specifically, the sum of the areas of the side intake openings S2 satisfies: 100mm2≤S2≤300mm2。
Optionally, the sum of the areas of the plurality of front intake openings S1 and the sum of the areas of the side intake openings S2 satisfy: 300mm2≤S1+S2≤500mm2。
According to some embodiments of the invention, the air duct comprises a front wall surface, an exhaust port, a rear wall surface, two side wall surfaces and a lower wall surface, wherein the distance between the front wall surface and the surface to be cleaned is gradually increased from front to back and from two sides to the middle, the cross section of the rear wall surface is arc-shaped, the upper end of the rear wall surface is in smooth transition with the front wall surface, the exhaust port is arranged on the rear wall surface and in smooth transition with the rear wall surface, the two side wall surfaces are respectively connected with two sides of the front wall surface and the rear wall surface, the lower wall surface is connected with the exhaust port and is formed into a curved surface, and an angle β between a tangent line of any point of the projection of the lower wall surface on the central symmetry plane of the body and the surface to be cleaned meets β degrees or less than 45 degrees.
Specifically, the height h of the side wall surface satisfies: h is less than or equal to 3 mm.
According to some embodiments of the invention, a radius D of the arc surface of the arc transition between the rear wall surface and the exhaust port satisfies: d is more than or equal to 25 mm.
According to some embodiments of the invention, the cross-section of the exhaust port is formed in an ellipse shape, a major axis of the ellipse shape being parallel to the bottom plate, and a minor axis of the ellipse shape being perpendicular to the bottom plate.
According to further embodiments of the present invention, the cross-section of the exhaust port is formed in a circle or a polygon having more than four sides.
A vacuum cleaner according to a second aspect of the present invention comprises: the floor brush comprises a machine body and the floor brush of the dust collector according to the first aspect of the invention, wherein the floor brush of the dust collector is communicated with the machine body through a connecting pipe.
According to the dust collector of the second aspect of the invention, the dust removing capability of the dust collector is improved, the noise of the dust collector is reduced, the structure of the dust collector is simplified, and the cost of the dust collector is reduced by arranging the dust collector floor brush of the first aspect of the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view illustrating a structure of a floor brush for a vacuum cleaner according to an embodiment of the present invention;
FIG. 2 is another schematic view of the vacuum cleaner floor brush shown in FIG. 1;
FIG. 3 is a partial cross-sectional view of a vacuum cleaner floor brush according to an embodiment of the present invention;
fig. 4 is another partial sectional view of a cleaner floor brush according to an embodiment of the present invention.
Reference numerals:
a floor brush 100 for a vacuum cleaner is provided,
a body 1, an air duct 11, a front wall 111, a rear wall 112, a side wall 113, a lower wall 114, a bottom plate 12, an exhaust port 13, a side intake port 14,
the front dust collecting bar 2, the front air inlet 21,
a rear dust collecting bar 3.
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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A cleaner floor brush 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 4. Among them, the cleaner floor brush 100 can be used for a cleaner, such as a vacuum cleaner, etc.
As shown in fig. 1 and 2, a cleaner floor brush 100 according to an embodiment of a first aspect of the present invention includes: a body 1 and a front dust collecting bar 2.
Specifically, the body 1 defines an air duct 11 therein, a bottom plate 12 of the body 1 is provided with a suction port communicating with the air duct 11, and the rear side of the body 1 is provided with an exhaust port 13. When the body 1 is covered on a surface to be cleaned (e.g., a carpet, a floor, a sofa, etc.), an airtight space is formed between the air duct 11 and the surface to be cleaned. Wherein the exhaust port 13 may be connected to a connecting pipe, such as a hose (not shown), for conveying the surface to be cleaned to a dust collecting part, such as a dirt cup, in the cleaner.
The front dust collecting bar 2 is provided at the front end of the body 1 to support the cleaner floor brush 100 on a surface to be cleaned and to isolate the air duct 11 from the surface to be cleaned. The front dust bar 2 is provided with a plurality of (e.g., six, eight, etc.) front air inlets 21 communicating with the air duct 11, and the front dust bar 2 is inclined with respect to a normal direction of a surface to be cleaned. The air flow can enter the dust collector floor brush 100 through the front air inlet 21, and can be effectively accelerated when passing through the front air inlet 21, thereby being convenient for sucking the objects to be cleaned into the air duct 11.
Here, it is to be noted that, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified. In addition, the "normal line of the surface to be cleaned" refers to a line perpendicular to the surface to be cleaned.
Wherein the front dust bar 2 may be inclined toward a direction close to the center of the cleaner brush 100 with respect to a normal direction of the surface to be cleaned, or may be inclined toward a direction away from the center of the cleaner brush 100 with respect to the normal direction of the surface to be cleaned.
For example, referring to fig. 3 and 4, the front dust collecting bar 2 is inclined toward a direction close to the center of the cleaner floor brush 100 with respect to a normal direction of a surface to be cleaned, that is, the front dust collecting bar 2 may be installed obliquely into the cleaner floor brush 100, that is, toward the air passage 11, in a direction in which the air current flows. Therefore, the front dust collecting strips 2 can guide the airflow entering the front air inlet 21, and meanwhile, compared with the traditional installation mode that the front dust collecting strips 2 are parallel to the normal of the surface to be cleaned, the front dust collecting strips 2 are obliquely installed relative to the normal of the surface to be cleaned, so that the included angle between the front dust collecting strips 2 and the top of the air channel 11 is reduced, the eddy stagnation area formed at the included angle due to the fact that the area of the airflow entering the air channel 11 is sharply enlarged is reduced, and further noise is reduced.
In addition, the front dust collecting strip 2 is obliquely installed relative to the normal direction of the surface to be cleaned, so that a part of the air flow entering the dust collector floor brush 100 from the front air inlet 21 obliquely impacts the surface to be cleaned, the object to be cleaned on the surface to be cleaned is more easily rolled up, the speed direction of the part of the air flow reflected by the surface to be cleaned is obliquely upward, the air flow can directly enter the air outlet 13, the impact of the air duct 11 on the air flow is reduced, the noise is further reduced, and under the condition that the thickness of the front dust collecting strip 2 is consistent, the front dust collecting strip 2 is obliquely installed relative to the normal direction of the surface to be cleaned, the contact area between the front dust collecting strip 2 and the surface to be cleaned can be effectively increased, the sealing performance between the air duct 11 and the surface to be cleaned is improved when the dust collector floor brush 100 works, and the dust removing capacity of the dust collector floor brush 100 is further.
Alternatively, the longitudinal section of the front air inlet 21 may be formed in a rectangular shape, a square shape, a trapezoidal shape, or the like, and is simple in structure and easy to process.
For example, when the cleaner is in operation, the body 1 of the cleaner floor brush 100 is covered on a surface to be cleaned, an air flow can enter the cleaner floor brush 100 from the front air inlet 21, and dust and hair on the surface to be cleaned are sucked into a dust cup of the cleaner along with the air flow.
Alternatively, the front dust bars 2 may be slats made of plastic or plastic wool, but are not limited thereto.
According to the dust collector floor brush 100 of the embodiment of the invention, the air duct 11 of the dust collector floor brush 100 is optimized by obliquely arranging the front dust collecting strips 2 relative to the normal direction of the surface to be cleaned, the airflow flowing state in the dust collector floor brush 100 is improved, the dust removing capability of the dust collector floor brush 100 is effectively improved, and the noise of the dust collector floor brush 100 is reduced. In addition, set up gyro wheel, fan or set up the amortization chamber on the body with traditional in the dust catcher scrubbing brush, fill the scheme of making an uproar of falling of inhaling the sound medium and compare, the dust catcher scrubbing brush 100 in this scheme simple structure and with low costs.
According to some embodiments of the present invention, the angle α between the front dust collecting bars 2 and the normal direction of the surface to be cleaned satisfies 30 ° ≦ α ≦ 60 °, specific values thereof may be adjusted and designed according to specific specification of the dust collector floor brush 100, for example, α may further satisfy α ≦ 45 °, α ≦ 30 °, or α ≦ 60 °.
According to some embodiments of the present invention, the distance a between the upper end of the front air inlet 21 and the bottom plate 12 satisfies: a is more than or equal to 3 mm. The specific numerical values can be adjusted and designed according to the specific specification and model of the dust collector floor brush 100, for example, a can further satisfy: a 3mm or a 5 mm. Therefore, the distance between the upper end of the front air inlet 21 and the bottom plate 12 can be effectively controlled, and the flow guiding effect of the front dust collecting strip 2 is ensured.
Further, at least one side of the body 1 is provided with a side air inlet 14 communicating with the air duct 11. That is, the side air inlet 14 communicating with the air duct 11 may be provided on either one of the left and right sides of the body 1, or the side air inlet 14 communicating with the air duct 11 may be provided on both the left and right sides of the body 1. For example, referring to fig. 1 and 2, the left and right sides of the body 1 are provided with one side intake port 14, respectively. Of course, it will be understood that the left and right sides of the body 1 may be provided with a plurality of side intake ports 14, respectively. Thus, airflow can enter the cleaner brush 100 from the side intake opening 14. For convenience of description, in the following description of the present invention, the air flow entering the cleaner brush 100 from the front air inlet 21 will be referred to as "forward air flow", and the air flow entering the cleaner brush 100 from the side air inlet 14 will be referred to as "side air flow".
Alternatively, the longitudinal cross section of the side intake opening 14 may be formed in a square, or trapezoid shape, but is not limited thereto.
According to some embodiments of the present invention, the plurality of front air ports 21 are symmetrically arranged with respect to the central symmetry plane of the body 1, and the distances between the adjacent front air ports 21 are not equal. For example, among the plurality of front air ports 21 located on the same side of the central symmetry plane, the distances between the adjacent front air ports 21 are not equal. Specifically, the distance between the adjacent front air ports 21 gradually decreases in the direction toward the central symmetry plane.
For example, in the example of fig. 1, the plurality of front air ports 21 on the right side of the central symmetry plane gradually decrease in distance between adjacent front air ports 21 in a direction toward the central symmetry plane (e.g., in a direction from right to left in fig. 1). This increases the flow area of the airflow entering from the side intake port 14, i.e., the side airflow, and reduces the flow velocity of the side airflow, thereby reducing noise. Since the cross-sectional area of the air duct 11 is larger closer to the central symmetry plane, by reducing the distance between the adjacent front air inlets 21 close to the central symmetry plane, the influence of the air flow entering from the front air inlet 21, i.e., the forward air flow, on the flow area of the air flow entering from the side air inlet 14, i.e., the lateral air flow, can be effectively reduced, thereby reducing the noise generated by the impact of the two air flows.
For example, in the example of fig. 1, six front air inlets 21 are provided on the front dust bar 2, wherein three front air inlets 21 are provided on the left side of the central symmetry plane, and three front air inlets 21 are provided on the right side of the central symmetry plane, which are symmetrical to the three front air inlets 21 about the central symmetry plane. Specifically, for convenience of description, the three front air ports 21 positioned on the right side of the central symmetry plane will be referred to as a first front air port 21, a second front air port 21, and a third front air port 21, respectively, wherein the first front air port 21 is adjacent to the central symmetry plane, the third front air port 21 is away from the central symmetry plane, and the second front air port 21 is positioned between the first front air port 21 and the third front air port 21. Wherein, the distance between the first front air inlet 21 and the second front air inlet 21 is d1, the distance between the second front air inlet 21 and the third front air inlet 21 is d2, and d1 and d2 satisfy: d1 < d 2.
Some according to the inventionIn the embodiment, the sum S1 of the areas of the plurality of front intake ports 21 satisfies: 200mm2≤S1≤400mm2. The specific value can be adjusted and designed according to the specific specification and model of the dust collector floor brush 100, which is not limited in the invention. For example, S1 may further satisfy: 200mm for S12、300mm2Or 400mm2And the like. Therefore, the area sum of the front air inlet 21 is moderate, and the noise of the dust collector floor brush 100 is effectively reduced on the premise of ensuring the dust removing capability of the dust collector floor brush 100.
According to some embodiments of the present invention, the sum of the areas of the plurality of side intake openings 14, S2, satisfies: 100mm2≤S2≤300mm2. The specific value can be adjusted and designed according to the specific specification and model of the dust collector floor brush 100, which is not limited in the invention. For example, S2 may further satisfy: s2-100 mm2、200mm2Or 300mm2And the like. Therefore, the area sum of the side air inlet 14 is moderate, and the noise of the dust collector floor brush 100 is further reduced on the premise of ensuring the dust removing capability of the dust collector floor brush 100.
According to other embodiments of the present invention, the sum S1 of the areas of the plurality of front air openings 21 and the sum S2 of the areas of the side air openings 14 satisfy: 300mm2≤S1+S2≤500mm2. Therefore, the noise of the dust collector floor brush 100 can be reduced on the premise of ensuring the dust removing capability of the dust collector floor brush 100.
Specifically, the height of the side intake port 14 is smaller than the height of the front intake port 21, and the depth e of the side intake port 14 satisfies: e is more than or equal to 5 mm. The specific value can be adjusted and designed according to the specific specification and model of the dust collector floor brush 100, which is not limited in the invention. For example, e may further satisfy: e 5mm, 10mm, 15mm, or the like. Therefore, the lateral air flow can generate larger tangential force on the surface to be cleaned, the dust removal effect is improved, the forward air flow and the lateral air flow can be layered, the impact of the two air flows is reduced, and the noise of the dust collector floor brush 100 is further reduced.
Here, it should be noted that "the height of the side intake port 14" referred to in the present application means the distance between the upper end of the side intake port 14 and the surface to be cleaned, and "the height of the front intake port 21" means the distance between the upper end of the front intake port 21 and the surface to be cleaned.
Referring to fig. 3 in conjunction with fig. 4, the air chute 11 includes, according to some embodiments of the present invention: a front wall 111, a rear wall 112, two side walls 113 and a lower wall 114.
Wherein the front wall 111 is gradually increased in distance from the surface to be cleaned in the direction from the front to the rear and from both sides to the middle, and the exhaust port 13 is provided on the front wall 111. Therefore, the flow area of the airflow can be increased, the flow speed of the airflow is reduced, and the noise is effectively reduced. Alternatively, the front wall surface 111 may be formed as an arc surface, but is not limited thereto.
The cross section of the rear wall surface 112 is arc-shaped, and the upper end of the rear wall surface is in smooth transition with the front wall surface 111, and the exhaust port 13 is arranged on the rear wall surface 112 and in smooth transition with the rear wall surface 112. Accordingly, the side air flow can be moved close to the rear wall surface 112 and discharged out of the air outlet 13 along the rear wall surface 112, thereby reducing the flow resistance of the side air flow and reducing the noise of the cleaner floor brush 100.
The two side wall surfaces 113 are connected to both sides of the front wall surface 111 and the rear wall surface 112, respectively, and the lower wall surface 114 is connected to the exhaust port 13. Therefore, when the dust collector floor brush 100 works, an airtight space is conveniently formed between the air duct 11 and the surface to be cleaned, so that the dust removing effect of the dust collector floor brush 100 is improved.
Specifically, the lower wall surface 114 is formed into a curved surface, and an angle β between a tangent line of any point of the projection of the lower wall surface 114 on the central symmetry plane of the body 1 and the surface to be cleaned satisfies that β is not more than 45 degrees, the specific value of the tangent line can be adjusted according to the specific specification and model of the dust collector ground brush 100, and the invention is not particularly limited to this.
Specifically, the height h of the side wall surface 113 satisfies: h is less than or equal to 3 mm. For example, h may further satisfy: h 2mm, etc. Thereby, the expansion of the airflow flow area can be reduced, thereby further reducing noise.
Alternatively, the arc radius D of the arc transition between the rear wall surface 112 and the exhaust port 13 satisfies: d is more than or equal to 25 mm. Therefore, the transition between the rear wall surface 112 and the exhaust port 13 is smooth, the flow resistance of the air flow is effectively reduced, the impact force of the air flow is reduced, and the noise of the dust collector floor brush 100 is further reduced.
According to some embodiments of the present invention, the cross-section of the exhaust port 13 is formed in an elliptical shape, a major axis of the elliptical shape being parallel to the base plate 12, and a minor axis of the elliptical shape being perpendicular to the base plate 12. From this, the circular arc surface radius that back wall 112 transited to gas vent 13 has further been increased, make the transition smooth, because the separation that turns round and bring when having reduced the side direction air current and getting into gas vent 13, and can be when guaranteeing great circular arc transition face, reduce the longitudinal length of gas vent 13, wall 114's inclination under the control, make wall 114's inclination less down, thereby preceding air current can directly get into gas vent 13, the impact of preceding air current to lower wall 114 has further been reduced, and then noise has further been reduced.
According to other embodiments of the present invention, the cross-section of the exhaust port 13 may also be formed in a circle or a polygon having more than four sides. Accordingly, the noise of the cleaner floor brush 100 can be reduced as well.
Furthermore, a rear dust collecting strip 3 is arranged on the body 1. Referring to fig. 2, a rear dust collection strip 3 may be provided at the front end of the base plate 12. The rear dust collecting strips 3 may be fluffy strips made of plastic fibers, which act as a seal. Specifically, when the dust collector floor brush 100 is covered on the surface to be cleaned, the rear dust collecting strips 3 can effectively improve the sealing performance of the air duct 11, so that the suction force of the dust collector floor brush 100 is improved, and the dust removing capacity of the dust collector floor brush 100 is improved.
For example, when the vacuum cleaner is in operation, an air flow is sucked in from the front air inlet 21 and the side air inlet 14, the forward air flow entering from the front air inlet 21 enters the air duct 11, is discharged to a connecting pipe such as a hose through the air outlet 13 and then enters the fan unit of the vacuum cleaner, the side air flow entering from the side air inlet 14 enters the air duct 11, is discharged to the connecting pipe through the air outlet 13 along the rear wall surface 112 of the air duct 11 and then enters the fan unit, and an object to be cleaned on the surface to be cleaned is sucked into a dust collector of the vacuum cleaner such as a dust cup along with the air flow.
Referring to fig. 1 to 4, a specific embodiment of a cleaner floor brush 100 according to an embodiment of the present invention will be described.
As shown in fig. 1 and 2, a cleaner floor brush 100 according to an embodiment of the present invention includes: a body 1, a front dust collecting strip 2 and a rear dust collecting strip 3.
Specifically, the body 1 defines an air duct 11 therein, a bottom plate 12 of the body 1 is provided with a suction port communicating with the air duct 11, and the rear side of the body 1 is provided with an exhaust port 13. When the body 1 is covered on the surface to be cleaned, an air-tight space is formed between the air duct 11 and the surface to be cleaned.
The front dust collecting bar 2 is arranged at the front end of the body 1 to support the dust collector ground brush 100 on a surface to be cleaned and can separate the air duct 11 from the surface to be cleaned, six front air inlets 21 with rectangular longitudinal sections and communicated with the air duct 11 are arranged on the front dust collecting bar 2, the front dust collecting bar 2 is inclined relative to the normal direction of the surface to be cleaned and faces to the direction close to the center of the dust collector ground brush 100, the inclination angle α is 45 degrees, three front air inlets 21 on the left side of the central symmetry plane of the body 1 and three front air inlets 21 on the right side of the central symmetry plane of the body 1 are symmetrically arranged relative to the central symmetry plane of the body 1, the distance between the adjacent front air inlets 21 is gradually reduced in the direction towards the central symmetry plane, and the distance a between the upper ends of the front air inlets 21 and the bottom plate 12 meets the condition that a is 3 mm.
The left and right sides of the body 1 are respectively provided with a longitudinal-section side intake port 14. The height of the side intake port 14 is smaller than the height of the front intake port 21, and the depth e of the side intake port 14 satisfies: e 8 mm.
The sum S1 of the areas of the six front intake ports 21 satisfies: 350mm for S12The sum S2 of the areas of the two side intake openings 14 satisfies: 150mm of S22。
The air duct 11 includes: a front wall 111, a rear wall 112, two side walls 113 and a lower wall 114. Wherein the distance between the front wall 111 and the surface to be cleaned gradually increases from front to back and from both sides to the middle, the front wall 111 is formed into an arc-shaped surface, and the exhaust port 13 is provided on the front wall 111. The cross section of the rear wall surface 112 is arc-shaped, the upper end of the rear wall surface is in smooth transition with the front wall surface 111, the exhaust port 13 is arranged on the rear wall surface 112 and is in smooth transition with the rear wall surface 112, and the arc radius D of the arc transition between the rear wall surface 112 and the exhaust port 13 satisfies the following conditions: d is 30 mm.
Two side wall surfaces 113 are respectively connected to two sides of the front wall surface 111 and the rear wall surface 112, the lower wall surface 114 is connected with the exhaust port 13, the lower wall surface 114 is formed into a curved surface, an angle β between a tangent line of any point of the projection of the lower wall surface 114 on the central symmetrical plane of the body 1 and a surface to be cleaned satisfies that β is 40 degrees, the height h of the side wall surface 113 satisfies that h is 1.5mm, the cross section of the exhaust port 13 is formed into an oval shape, the major axis of the oval shape is parallel to the bottom plate 12, and the minor axis of the oval shape is perpendicular to the bottom plate 12.
The rear dust collecting bar 3 is provided at the front end of the bottom plate 12. The rear dust collecting strip 3 is a villiform strip made of plastic fiber, which can effectively improve the sealing performance of the air duct 11, thereby improving the suction force of the dust collector floor brush 100 and further improving the dust removing capacity of the dust collector floor brush 100.
To verify the noise reduction performance of the vacuum cleaner floor brush 100 of the present embodiment, a hand board was specially made and compared with a vacuum cleaner floor brush 100 representing the level of the floor brush performance prevailing in the current market for noise and floor cleaning capability tests. The noise testing method refers to the standard IEC60704-1 testing specification of airborne noise emitted by household appliances and similar appliances, the positions of microphones are arranged by adopting a hemispherical point arrangement method, and the radius r is 1.5 m.
Through tests, the dust collector floor brush 100 of the embodiment of the invention has greatly reduced noise values in low frequency band (<200HZ) and medium and high frequency band (>800 HZ). The reason for the low-frequency noise value reduction is as follows: the oval exhaust port 13 and the rear wall surface 112 adopt large arc surfaces for smooth transition, so that the separation of airflow flow and the rear wall surface 112 is reduced, and large vortexes are reduced.
In addition, the arrangement of the front dust bars 2 obliquely with respect to the normal direction of the surface to be cleaned, the arrangement of the front air openings 21 and the lower wall surface 114, reduces impact noise. The reason for the high-band noise reduction is: the front dust collecting strips 2 are obliquely arranged relative to the normal direction of the surface to be cleaned, the flowing direction of partial forward airflow is obliquely upward, layering is formed between the partial forward airflow and the lateral airflow, and meanwhile, the interference of the forward airflow to the lateral airflow is reduced by the non-uniform distance arrangement mode between adjacent air inlets on one side of the central symmetry plane, so that small vortexes generated by airflow disturbance are reduced.
The dust removal capability test method refers to the standard IEC60312, and tests show that the dust removal capability, namely the dust removal efficiency, of the dust collector floor brush 100 is about 94.5%, while the dust removal efficiency of the dust collector floor brush 100 of the embodiment of the invention is about 96.5%, which is obviously improved because the side air inlets 14 enable air flow to have larger impact on the ground, and meanwhile, the front dust collection strips 2 are obliquely arranged relative to the normal direction of the surface to be cleaned, so that the sealing performance of the dust collector floor brush 100 in the moving process is improved, and the dust removal efficiency is also improved.
Experiments show that compared with the dust collector floor brush 100 which represents the common level of the performance of the dust collector floor brush in the current market, the noise is reduced by about 6dB, the dust removal capacity is improved by about two percentage points, the effect is obvious, and the repeated experiment results are stable.
According to the dust collector floor brush 100 provided by the embodiment of the invention, the air duct 11 of the dust collector floor brush 100 is optimized, the airflow flowing state in the dust collector floor brush 100 is improved, the dust removing capability of the dust collector floor brush 100 is effectively improved, the noise of the dust collector floor brush 100 is reduced, and the dust collector floor brush 100 is simple in structure and low in cost.
A vacuum cleaner according to an embodiment of the second aspect of the present invention includes: a machine body and a cleaner floor brush 100 according to the above-described embodiment of the first aspect of the present invention, the cleaner floor brush 100 being communicated with the machine body through a connection pipe such as a hose. Wherein, the dust collector can be an upright dust collector or a horizontal dust collector.
According to the dust collector of the embodiment of the second aspect of the invention, by arranging the dust collector floor brush 100 of the embodiment of the first aspect of the invention, the dust removing capability of the dust collector is improved, the noise of the dust collector is reduced, the structure of the dust collector is simplified, and the cost of the dust collector is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (17)
1. A vacuum cleaner floor brush, comprising:
the air-out channel is limited in the body, a suction port communicated with the air channel is formed in a bottom plate of the body, an air exhaust port is formed in the rear side of the body, and an air-tight space is formed between the air channel and the surface to be cleaned when the body covers the surface to be cleaned;
the front dust collecting strip is arranged at the front end of the body to support the dust collector floor brush on the surface to be cleaned, a plurality of front air inlets communicated with the air duct are formed in the front dust collecting strip, and the front dust collecting strip is inclined relative to the normal direction of the surface to be cleaned.
2. A vacuum cleaner floor brush according to claim 1, characterized in that the angle α between the front dust collecting bar and the normal direction of the surface to be cleaned satisfies 30 ° ≦ α ≦ 60 °.
3. The vacuum cleaner floor brush of claim 2, wherein an angle α between the front dust collecting bar and a normal direction of the surface to be cleaned satisfies α -45 °.
4. The vacuum cleaner floor brush of claim 1, wherein a distance a between an upper end of the front air inlet and the bottom plate satisfies: a is more than or equal to 3 mm.
5. The vacuum cleaner floor brush of claim 1, wherein the plurality of front air inlets are symmetrically arranged with respect to a central symmetry plane of the body, and distances between adjacent front air inlets are unequal.
6. A vacuum cleaner floor brush as claimed in claim 5, wherein the distance between adjacent front air openings decreases in a direction towards the central symmetry plane.
7. The vacuum cleaner floor brush of claim 1, wherein a sum S1 of areas of the plurality of front air inlets satisfies: 200mm2≤S1≤400mm2。
8. The vacuum cleaner floor brush of claim 1, wherein at least one side of the body further has a side intake opening in communication with the air duct.
9. The vacuum cleaner floor brush of claim 8, wherein the height of the side intake opening is less than the height of the front intake opening, and the depth d of the side intake opening satisfies: d is more than or equal to 5 mm.
10. A vacuum cleaner floor brush as claimed in claim 8, wherein the sum S2 of the areas of the side air inlets satisfies: 100mm2≤S2≤300mm2。
11. The vacuum cleaner floor brush of claim 10, wherein a sum of areas of the plurality of front air inlets S1 and a sum of areas of the side air inlets S2 satisfy: 300mm2≤S1+S2≤500mm2。
12. A vacuum cleaner floor brush as claimed in any one of claims 1 to 11, wherein the air duct comprises:
the distance between the front wall surface and the surface to be cleaned is gradually increased in the direction from front to back and from two sides to the middle, and the exhaust port is formed in the front wall surface;
the cross section of the rear wall surface is arc-shaped, the upper end of the rear wall surface is in smooth transition with the front wall surface, and the exhaust port is arranged on the rear wall surface and is in smooth transition with the rear wall surface;
the two side wall surfaces are respectively connected to two sides of the front wall surface and the rear wall surface;
the lower wall surface is connected with the exhaust port and is formed into a curved surface, and an angle β between a tangent line of any point of the projection of the lower wall surface on the central symmetry plane of the body and the surface to be cleaned is equal to or less than β and equal to 45 degrees.
13. A vacuum cleaner floor brush as claimed in claim 12, wherein the height h of the side wall surface satisfies: h is less than or equal to 3 mm.
14. The vacuum cleaner floor brush of claim 12, wherein a radius D of the arc transition between the rear wall surface and the exhaust port satisfies: d is more than or equal to 25 mm.
15. The vacuum cleaner floor brush of claim 1, wherein the cross-section of the air outlet is formed in an ellipse, a major axis of the ellipse being parallel to the bottom plate, and a minor axis of the ellipse being perpendicular to the bottom plate.
16. The vacuum cleaner floor brush according to claim 1, wherein a cross-section of the air outlet is formed in a circular shape or a polygonal shape having more than four sides.
17. A vacuum cleaner, comprising:
a body;
the vacuum cleaner floor brush of any one of claims 1-16, in communication with the machine body through a connecting tube.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610669310.1A CN106108778B (en) | 2016-08-15 | 2016-08-15 | Dust collector floor brush and dust collector |
| EP16913370.9A EP3461384B1 (en) | 2016-08-15 | 2016-10-31 | Floor brush of dust collector and dust collector |
| PCT/CN2016/104125 WO2018032615A1 (en) | 2016-08-15 | 2016-10-31 | Floor brush of dust collector and dust collector |
| US16/233,133 US11103114B2 (en) | 2016-08-15 | 2018-12-27 | Ground brush for cleaning appliance and cleaning appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610669310.1A CN106108778B (en) | 2016-08-15 | 2016-08-15 | Dust collector floor brush and dust collector |
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| Publication Number | Publication Date |
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| CN106108778A CN106108778A (en) | 2016-11-16 |
| CN106108778B true CN106108778B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610669310.1A Active CN106108778B (en) | 2016-08-15 | 2016-08-15 | Dust collector floor brush and dust collector |
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| CN (1) | CN106108778B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3851015B1 (en) | 2018-11-09 | 2024-06-19 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Sweeping robot |
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| CN106108778A (en) | 2016-11-16 |
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Effective date of registration: 20201217 Address after: 528311 4 Global Innovation Center, industrial road, Beijiao Town, Shunde District, Foshan, Guangdong, China Patentee after: GUANGDONG MEIDI WHITE HOUSEHOLD ELECTRICAL APPLIANCE TECHNOLOGY INNOVATION CENTER Co.,Ltd. Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Patentee before: MIDEA GROUP Co.,Ltd. |