Impeller, fan and cleaning device

Abstract

The utility model relates to the technical field of fan noise reduction, in particular to an impeller, a fan and a cleaning device, the impeller comprises a seat body and fan blades, the seat body is provided with a top surface and a curved surface, and the curved surface surrounds the top surface and intersects with the top surface. And one end of each fan blade is connected with the seat body and extends on the curved surface. According to the impeller, generated noise can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fan noise reduction, and in particular to an impeller, a fan and a cleaning device. Background Art

[0002] A fan is a device that generates airflow, which can use the airflow to achieve the cleaning function of collecting and blowing away dust.

[0003] A fan generally consists of an impeller and an air duct. The airflow generated by the rotation of the impeller leaves the fan under the guidance of the air duct, achieving a cleaning function.

[0004] In the related art, the impeller easily generates noise when working, affecting the user's normal work and rest. Utility Model Content

[0005] In view of this, the present application provides an impeller, a fan and a cleaning device to reduce the noise generated.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of the present application provides an impeller, comprising a base and a blade, wherein the base has a top surface and a curved surface, the curved surface surrounds the top surface and intersects with the top surface. One end of the blade is connected to the base and extends on the curved surface.

[0008] Optionally, the impeller includes a muffler portion connected to the top surface of the seat body, the muffler portion has a muffler cavity, and the opening of the muffler cavity is located on a side of the muffler portion away from the seat body.

[0009] Optionally, the cross-sectional area of ​​the muffler cavity gradually decreases from the opening of the muffler cavity toward the top surface along the depth direction, or the cross-sectional area of ​​the muffler cavity is equal everywhere.

[0010] Optionally, the muffler portion is separated from the fan blades, the center of the top surface is located on the axis of the muffler cavity, and the area of ​​the orthographic projection of the muffler cavity on the top surface is greater than half the area of ​​the top surface.

[0011] Optionally, the distance S1 from the opening of the muffler cavity to the surface where the top surface is located and the distance S2 from the fan blade to the surface where the top surface is located have the following relationship: S1 <S2<2S1。

[0012] Optionally, one side of the fan blade extends along the extension direction of the spiral line from a side of the curved surface of the base body connected to the top surface of the base body to an edge of the curved surface of the base body.

[0013] Optionally, the cross-sectional area of ​​the fan blade gradually increases from the side connected to the base body to the side opposite to the base body.

[0014] A second aspect of the present application provides a fan, comprising an impeller as described in the above technical solution.

[0015] Optionally, the impeller includes a silencer portion, which is connected to the top surface of the seat body, and the silencer portion has a silencer cavity, and the opening of the silencer cavity is located on the side of the silencer portion away from the seat body. The fan includes an air duct and a motor, and the motor and the impeller are both located in the air duct. The motor is transmission-connected to the seat body, and the opening of the silencer cavity faces the entrance of the air duct.

[0016] Optionally, the axis of the muffler chamber coincides with the axis of the air duct.

[0017] Optionally, the base body has a cooling hole, which passes through the base body, one end of the cooling hole faces the motor, and the other end of the cooling hole is connected to the muffler cavity.

[0018] A third aspect of the present application provides a cleaning device, which includes a blower as described in the above technical solution.

[0019] The beneficial effects of the technical solution provided by the embodiments of the present application include at least the following: the top surface can be used for connecting to the motor transmission. The curved surface can avoid the motor, which is conducive to improving the compactness of the assembly of the impeller and the motor. One end of the fan blade is connected to the curved surface of the base body, which is conducive to the base body being driven to drive the fan blade to generate airflow. One end of the fan blade is connected to the base body and extends on the curved surface, which can not only improve the connection performance between the base body and the fan blade, but also reduce the interference of the fan blade when the airflow passes through the top surface of the base body and generates vortices. The reduction of vortices is conducive to reducing the noise generated by the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of a partial structure of a fan provided in an embodiment of the present application;

[0022] Figure 2 A schematic transverse cross-sectional view of an impeller provided in an embodiment of the present application;

[0023] Figure 3 A schematic longitudinal cross-sectional view of the first impeller provided in an embodiment of the present application;

[0024] Figure 4 A schematic longitudinal cross-sectional view of the second impeller provided in an embodiment of the present application;

[0025] Figure 5 A schematic structural diagram of a fan provided in an embodiment of the present application;

[0026] Figure 6 A schematic structural diagram of the inlet position of a fan provided in an embodiment of the present application;

[0027] Figure 7 A schematic structural diagram of the outlet position of a fan provided in an embodiment of the present application;

[0028] Figure 8 A schematic longitudinal cross-sectional view of a fan provided in an embodiment of the present application.

[0029] The reference numerals in the figures represent:

[0030] 1. Base; 101. Cooling hole; 102. Cavity; 11. Reinforcement rib; 12. Top surface; 13. Curved surface;

[0031] 2. Fan blades;

[0032] 3. Muffler unit; 301. Muffler chamber;

[0033] 4. Support ring;

[0034] 5. Motor;

[0035] 600, air duct; 601, inlet; 602, outlet;

[0036] 7. Bracket.

[0037] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The directional nouns involved in the embodiments of this application, such as "upper", "lower", "side", etc., are generally expressed in the form of Figure 1The relative relationships shown in the figure are used as a reference, and these directional terms are used only to more clearly describe the relationship between structures, not to describe absolute directions. When the product is placed in different postures, the direction may change, for example, "up" and "down" may be interchangeable.

[0040] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0041] In order to make the technical solutions and advantages of the present application clearer, the implementation methods of the present application will be described in further detail below with reference to the accompanying drawings.

[0042] The first aspect of the present application provides an impeller, such as Figure 1 and Figure 2 As shown, the impeller includes a base 1 and a blade 2, wherein the base 1 has a top surface 12 and a curved surface 13, and the curved surface 13 surrounds the top surface 12 and intersects with the top surface 12. One end of the blade 2 is connected to the base 1 and extends on the curved surface 13.

[0043] It is understandable that the top surface 12 can be used to connect to the motor transmission. The curved surface 13 can avoid the motor, which is conducive to improving the compactness of the impeller and motor assembly. One side of the fan blade 2 is connected to the curved surface 13 of the base body 1, which is conducive to the base body 1 being driven to drive the fan blade 2 to generate airflow. One end of the fan blade 2 is connected to the base body 1 and extends on the curved surface 13, which can not only improve the connection performance between the base body 1 and the fan blade 2, but also reduce the interference of the fan blade 2 when the airflow passes through the top surface 12 of the base body 1 and generates eddy currents. The reduction of eddy currents is conducive to reducing the noise generated by the impeller.

[0044] In the embodiment of the present application, since the fan blades 2 generally rotate around their rotating axis when working, the rotation will push the air and generate airflow. The top surface 12 of the base body 1 intersects with the curved surface 13. If the fan blades 2 extend to the top surface 12 of the base body 1, they will cooperate with the top surface 12 and the curved surface 13 of the base body 1 to form a factor that hinders the flow of airflow, thereby causing the airflow to collide back and forth and generate vortices. The existence of vortices also becomes the main source of noise for the fan. The present application improves the structure of the fan blades 2 so that one end is connected to the base body 1 and extends on the curved surface 13. This can reduce the interference of the fan blades 2 when the airflow passes through the top surface 12 of the base body 1 and the generation of vortices. The reduction of vortices is conducive to reducing the noise generated by the impeller.

[0045] In the embodiment of the present application, the base body 1 may be a frustum or a prism, the top surface 12 is the ground surface with a smaller area in the base body 1 , and the curved surface 13 is the side surface of the base body.

[0046] In the embodiment of the present application, the top surface 12 of the base body 1 may refer to the side with the smaller area among two parallel planes.

[0047] In the embodiment of the present application, the fan blades 2 can be connected to the base 1 through processes such as bonding and integral molding.

[0048] In the embodiment of the present application, a rounded corner may be formed between the curved surface 13 and the top surface 12 of the base body 1 to reduce interference with the airflow at the connection point between the two.

[0049] In the embodiment of the present application, the number of the fan blades 2 can be 1, 2, or 3, or any other number. The multiple fan blades 2 can be arranged at intervals along the circumference of the base 1 to reduce interference between the fan blades 2.

[0050] In the embodiment of the present application, the wind speed at the top surface 12 of the base body 1 is lower than the wind speed at the curved surface 13. Therefore, the impact of not arranging the fan blades 2 on the air output is relatively low. At the same time, the collision between the fan blades 2 and the airflow at the top surface 12 of the base body 1 can be reduced, which is conducive to reducing noise.

[0051] In the embodiment of the present application, the impeller includes a support ring 4, and the number of blades 2 is multiple, and the outer sides of the multiple blades 2 are connected to the inner side of the support ring 4. It is understood that the multiple blades 2 can be driven by the base 1 at the same time, and at the same time, an airflow flowing in the same direction is generated, and the airflow leaves the impeller under the guidance of the blades 2, which is conducive to increasing the air output of the impeller. By being connected to the blades 2, the support ring 4 can support the blades 2 and reduce the vibration of the blades 2 caused by the reaction force of the airflow on the blades 2, which is conducive to reducing the noise generated by the impeller.

[0052] In the embodiment of the present application, the number of the fan blades 2 can be a prime number, and a prime number of the fan blades 2 can reduce the noise generated when the impeller rotates.

[0053] In some of the embodiments of this application, Figure 3 and Figure 4 As shown, the impeller includes a muffler portion 3 , which is connected to the top surface 12 of the base 1 . The muffler portion 3 has a muffler cavity 301 , and the opening of the muffler cavity 301 is located on the side of the muffler portion 3 facing away from the base 1 .

[0054] It can be understood that the opening of the silencer chamber 301 is located on the side of the silencer portion 3 facing away from the seat body 1, so that when the seat body 11 rotates, external airflow can enter the silencer chamber 301 and interact in the silencer chamber 301 to reduce the vibration and noise caused by the collision with the seat body 11.

[0055] In the embodiment of the present application, the area of ​​the opening of the muffler cavity 301 may be smaller than or equal to the cross-sectional area of ​​the muffler cavity 301 .

[0056] In some of the embodiments of this application, Figure 3 and Figure 4As shown, the cross-sectional area of ​​the muffler cavity 301 gradually decreases from the opening of the muffler cavity 301 to the top surface 12 along the depth direction, or the cross-sectional area of ​​the muffler cavity 301 is equal everywhere.

[0057] It can be understood that such a setting is beneficial for the silencer chamber 301 to guide the airflow, and is beneficial for the direction of the airflow at the top surface 12 of the seat 1 to be consistent with the direction of the airflow generated by the fan blades 2, thereby reducing the generation of noise.

[0058] In the embodiment of the present application, the muffler cavity 301 is in a truncated cone or cylindrical shape.

[0059] In some of the embodiments of this application, Figure 2 and Figure 3 As shown, the muffler portion 3 is separated from the fan blades 2 , the center of the top surface 12 is located on the axis of the muffler cavity 301 , and the area of ​​the orthographic projection of the muffler cavity 301 on the top surface 12 is greater than half of the area of ​​the top surface 12 .

[0060] It is understood that the separation of the muffler portion 3 and the fan blades 2 can prevent the two from driving each other to generate vibration during operation, which is conducive to reducing the generation of noise. The center of the top surface 12 is located on the axis of the muffler cavity 301, which is conducive to the center of gravity of the entire impeller coinciding with its center, thereby helping to reduce the noise generated by the operation of the impeller. The area of ​​the orthographic projection of the muffler cavity 301 on the top surface 12 is greater than half the area of ​​the top surface 12, which can increase the capacity of the muffler cavity 301 and improve the noise reduction effect.

[0061] In some of the embodiments of this application, Figure 3 and Figure 4 As shown, the distance S1 from the opening of the muffler cavity 301 to the surface where the top surface 12 is located and the distance S2 from the fan blade 2 to the surface where the top surface 12 is located have the following relationship: S1 <S2<2S1。

[0062] It can be understood that such a setting is beneficial to increasing the volume of the silencer chamber 301 and improving the silencer effect, while also helping to maintain a relative separation distance between the fan blades 2 and the silencer part 3 to avoid interference between the fan blades 2 and the silencer part 3.

[0063] In some of the embodiments of this application, Figure 1 and Figure 2 As shown, one side of the fan blade 2 extends along the extension direction of the spiral line from the side of the curved surface 13 of the base body 1 connected to the top surface 12 of the base body 1 to the edge of the curved surface 13 of the base body 1.

[0064] It is understandable that the fan blades 2 can generate airflow under the drive of the base 1. The fan blades 2 extend along the extension direction of the spiral line, which can not only guide the generated airflow, but also increase the kinetic energy and pressure of the generated airflow, thereby improving the air outlet effect.

[0065] In some of the embodiments of this application, Figure 2 and Figure 3 As shown, the cross-sectional area of ​​the fan blade 2 gradually increases from the side connected to the base 1 to the side opposite to the base 1.

[0066] It can be understood that the fan blades 2 with gradually increasing cross-sectional areas can guide the airflow, which is beneficial for the airflow to maintain consistency in direction when leaving the fan blades 2, thereby improving the efficiency of air outlet.

[0067] The second aspect of the present application provides a fan, such as Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the fan includes the impeller of the above embodiment.

[0068] It can be understood that, due to the adoption of the impeller of the above embodiment, the fan of the present application has the same technical effects as the above embodiment, which will not be described in detail here.

[0069] In some embodiments of the present application, the impeller includes a silencer portion 3, which is connected to the top surface 12 of the seat body 1. The silencer portion 3 has a silencer cavity 301. The opening of the silencer cavity 301 is located on the side of the silencer portion 3 facing away from the seat body 1. The fan includes an air duct 600 and a motor 5. The motor 5 and the impeller are both located in the air duct 600. The motor 5 is transmission-connected to the seat body 1. The opening of the silencer cavity 301 faces the entrance 601 of the air duct 600.

[0070] It is understood that the motor 5 can rotate to drive the impeller, and the airflow generated by the impeller can be guided by the air duct 600 and leave the fan to complete its cleaning function. The opening of the muffler chamber 301 is oriented toward the inlet 601 of the air duct 600, so that when the airflow entering the air duct enters the muffler chamber 301 and collides with the top surface of the base 1, the noise generated can be consumed in the muffler chamber 301, thereby achieving a noise reduction effect.

[0071] In the embodiment of the present application, the motor 5 and the base body 1 can be connected to each other through key connection, bonding or welding.

[0072] In the embodiment of the present application, the output end of the motor 5 may be located on the central axis of the base 1 , thereby reducing the noise caused by structural balance problems when the base 1 rotates.

[0073] In the embodiment of the present application, the motor 5 is closer to the outlet 602 of the air duct 600 than the impeller.

[0074] In an embodiment of the present application, the air duct 600 has an inlet 601 and an outlet 602, and the area of ​​the inlet 601 and the area of ​​the outlet 602 are both less than or equal to the channel cross-sectional area of ​​the air duct 600. Such a setting can form an expanded silencer cavity at the channel position of the air duct 600, so that the noise energy generated by the air flow is consumed to a certain extent in the air duct 600, thereby reducing the noise generated.

[0075] In the embodiment of the present application, the channel cross-sections at various positions of the air duct 600 may be the same or substantially the same, so as to reduce the increase in noise caused by sudden changes in the channel cross-section.

[0076] In the embodiment of the present application, the base body 1 has a cavity 102, the motor 5 extends into the cavity 102 and is transmission-connected to the base body 1. The cavity 102 is conducive to accommodating the motor 5, which can reduce the interference of the shape of the motor 5 on the airflow and help reduce the noise generated.

[0077] In an embodiment of the present application, the base body 1 includes a reinforcing rib 11, which is located in the cavity 102 and connects the curved surface 13 and the top surface 12 of the cavity 102. The reinforcing rib 11 supports the top surface 12 and the curved surface 13 of the base body 1, thereby reducing the deformation of the top surface 12 and the curved surface 13 caused by the impact of airflow.

[0078] In this embodiment of the present application, the fan includes a bracket 7 , which connects the sidewall of the air duct 600 and the motor 5 . Because the airflow generated by the impeller carries certain vortices, which often cause certain noise during the flow of the airflow, the bracket 7 can guide and rectify the airflow, reducing the vortices generated by the airflow and, in turn, reducing the noise generated. Furthermore, the bracket 7 supports the motor 5 , helping to keep the motor 5 within the air duct 600 .

[0079] In some of the embodiments of this application, Figure 8 As shown, the axis of the muffler chamber 301 coincides with the axis of the air duct 600 .

[0080] It can be understood that the coincidence of the axes of the two is conducive to improving the uniformity of the force exerted by the airflow on the impeller as a whole during operation, thereby reducing the noise generated by the fan during operation.

[0081] In some of the embodiments of this application, Figure 2 As shown, the base body 1 has a cooling hole 101 , which passes through the base body 1 , with one end of the cooling hole 101 facing the motor 5 and the other end of the cooling hole 101 communicating with the muffler cavity 301 .

[0082] It is understandable that the motor 5 generates a certain amount of heat when in operation, and the impeller blocks the motor 5, preventing the airflow generated by the impeller from passing smoothly through the motor 5, resulting in heat accumulation in the motor 5. The cooling holes 101 allow airflow to pass through the base 1 and blow on the motor 5, reducing the heat generated by the motor 5.

[0083] A third aspect of the present application provides a cleaning device, which includes the fan as described in the above embodiment.

[0084] It can be understood that, due to the adoption of the fan of the above embodiment, the cleaning device of the present application has the same technical effects as the above embodiment, which will not be described in detail here.

[0085] In the embodiment of the present application, the fan can be used to dry air, collect dust or perform other tasks using airflow.

[0086] In the embodiment of the present application, the cleaning device may be a dehumidifier, a humidifier, an air purifier or the like.

[0087] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0088] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only.

[0089] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An impeller, characterized in that: The impeller comprises a seat body (1) and blades (2), wherein: The seat body has a top surface (12) and a curved surface (13), wherein the curved surface (13) surrounds the top surface (12) and intersects with the top surface (12); One end of the fan blade (2) is connected to the base (1) and extends on the curved surface (13).

2. The impeller according to claim 1, characterized in that The impeller comprises a muffler portion (3), the muffler portion (3) being connected to the top surface (12) of the seat body (1), the muffler portion (3) having a muffler cavity (301), and an opening of the muffler cavity (301) being located on a side of the muffler portion (3) facing away from the seat body (1).

3. The impeller according to claim 2, characterized in that The cross-sectional area of ​​the muffler cavity (301) gradually decreases along the depth direction from the opening of the muffler cavity (301) toward the top surface (12). or, The cross-sectional area of ​​the muffler cavity (301) is equal everywhere.

4. The impeller according to claim 2, characterized in that The muffler portion (3) is separated from the fan blade (2), the center of the top surface (12) is located on the axis of the muffler cavity (301), and the area of ​​the orthographic projection of the muffler cavity (301) on the top surface (12) is greater than half the area of ​​the top surface (12).

5. The impeller according to claim 2, characterized in that The distance S1 from the opening of the muffler cavity (301) to the surface where the top surface (12) is located and the distance S2 from the fan blade (2) to the surface where the top surface (12) is located have the following relationship: S1 <S2<2S1。 6. The impeller according to claim 1, characterized in that One side of the fan blade (2) extends along the extension direction of the spiral line from a side of the curved surface (13) of the base body (1) connected to the top surface (12) of the base body (1) to the edge of the curved surface (13) of the base body (1).

7. The impeller according to claim 1, characterized in that The cross-sectional area of ​​the fan blade (2) gradually increases from the side connected to the base body (1) to the side opposite to the base body (1).

8. A fan, characterized in that: The fan comprises the impeller according to any one of claims 1 to 7.

9. The fan according to claim 8, characterized in that The impeller comprises a muffler portion (3), the muffler portion (3) being connected to the top surface (12) of the base (1), the muffler portion (3) having a muffler cavity (301), the opening of the muffler cavity (301) being located on a side of the muffler portion (3) facing away from the base (1), the fan comprising an air duct (600) and a motor (5), the motor (5) and the impeller being both located in the air duct (600), the motor (5) being transmission-connected to the base (1), and the opening of the muffler cavity (301) facing the inlet (601) of the air duct (600).

10. The fan according to claim 9, characterized in that The axis of the muffler chamber (301) coincides with the axis of the air duct (600).

11. The fan according to claim 9, characterized in that The base body (1) has a cooling hole (101), the cooling hole (101) passes through the base body (1), one end of the cooling hole (101) faces the motor (5), and the other end of the cooling hole (101) is connected to the muffler cavity (301).

12. A cleaning device, characterized in that: The cleaning device comprises the fan according to any one of claims 8 to 11.

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