Impeller and fan structure of range hood

Abstract

The application relates to an impeller, comprising a blade disc, a plurality of first blades and a plurality of second blades, the first blades and the second blades are alternately arranged on the blade disc, and a plurality of micro holes are arranged on the first blades. The impeller of the application is provided with the alternately arranged first blades and second blades, and the first blades are provided with the micro holes, in the rotating process, the air jetted out through the micro holes can weaken the vortex flow near the vortex tongue and the airflow separation, thus, the noise can be reduced, the air outlet speed of an air outlet can be improved, and the performance of a fan structure and the experience of a user can be improved.

Description

Technical Field

[0001] This application relates to the field of range hoods, and more particularly to an impeller and a fan structure for a range hood. Background Technology

[0002] The impellers of some fan structures on the market are mostly composed of sheet metal blades. The vortex area generated in the vortex tongue section will produce a lot of noise and also affect the air outlet speed.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0004] This application provides an impeller and a fan structure for a range hood to solve the above-mentioned problems.

[0005] In a first aspect, this application provides an impeller, including an impeller disk, a first blade and a second blade, wherein multiple first blades and multiple second blades are provided, and the first blades and the second blades are alternately arranged on the impeller disk, and multiple micro-holes are provided on the first blade.

[0006] Optionally, the first blade and the second blade are integrally arc-shaped.

[0007] Optionally, the bladed disk includes a first fixing part and a second fixing part in the form of a ring. A first through hole is formed on the surface of the first fixing part, and a second through hole corresponding to the first through hole is formed on the second fixing part. A first insertion bending part matching the first through hole and the second through hole is provided at both ends of the first blade. After the first insertion bending part at both ends of the first blade is inserted into the first through hole and the second through hole, it bends under the action of external force to achieve connection with the first fixing part and the second fixing part.

[0008] Optionally, a third through hole is provided on the surface of the first fixing part, and a fourth through hole corresponding to the third through hole is provided on the second fixing part. Second insertion bending parts matching the third through hole and the fourth through hole are provided at both ends of the second blade. After the second insertion bending parts at both ends of the second blade are inserted into the third through hole and the fourth through hole, they are bent under the action of external force to achieve connection with the first fixing part and the second fixing part.

[0009] Optionally, the impeller further includes a reinforcing fixing part in the form of a ring, the reinforcing fixing part being disposed between the first fixing part and the second fixing part, the reinforcing fixing part having a fifth through hole matching the cross-sectional shape of the first blade, the first blade passing through the fifth through hole and contacting the fifth through hole at its middle position, and the two ends of the first blade being connected to the first fixing part and the second fixing part respectively.

[0010] Optionally, a sixth through hole matching the cross-sectional shape of the second blade is provided on the reinforcing fixing part. The second blade passes through the sixth through hole and its middle position contacts the sixth through hole. The two ends of the second blade are respectively connected to the first fixing part and the second fixing part.

[0011] Optionally, the diameter of the micropore is 1.5-2.5 mm.

[0012] Optionally, the plurality of the micropores are arranged in an array.

[0013] Secondly, this application provides a fan structure for a range hood, which includes the aforementioned impeller.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art:

[0015] This embodiment of the application sets alternating first and second blades, and the first blade has a micro-hole. During rotation, the air jetted through the micro-hole can weaken the vortex and airflow separation near the vortex tongue. This helps to reduce noise and increase the air outlet speed, which is beneficial to improving the performance of the fan structure and the user experience. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a perspective view of an impeller provided in an embodiment of this application.

[0020] Figure 2 This is a perspective view of the first blade of this application.

[0021] Figure 3 This is a perspective view of the second blade of this application.

[0022] Figure 4 This is a perspective view of the impeller of this application.

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Impeller; 2. First blade; 3. Second blade; 4. Micro-hole; 5. First fixing part; 6. Second fixing part; 7. Reinforcing fixing part; 8. First through hole; 9. Second through hole; 10. First insertion bending part; 11. Third through hole; 12. Fourth through hole; 13. Second insertion bending part; 14. Fifth through hole; 15. Sixth through hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0028] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0029] To address the technical problems in the prior art, this application provides an impeller and a fan structure for a range hood. By setting alternating first and second blades, with the first blade having micro-holes, the air jetted through the micro-holes during rotation can weaken the vortex and airflow separation near the vortex tongue. This helps to reduce noise and increase the air outlet speed, thereby improving the performance of the fan structure and the user experience.

[0030] Figure 1-5 An impeller provided in this application embodiment includes an impeller disk 1, a first blade 2, and a second blade 3. Multiple first blades 2 and second blades 3 are provided, and the first blades 2 and second blades 3 are alternately arranged on the impeller disk 1. The first blades 2 and second blades 3 are generally arc-shaped, and multiple micro-holes 4 are formed on the first blade 2. The arc-shaped first blades 2 and second blades 3 can trap a larger amount of air when the impeller rotates, allowing more airflow to be delivered towards the outlet, thus increasing the airflow volume. The micro-holes 4 allow the air jetted from the micro-holes 4 to weaken the vortex near the vortex tongue and reduce the separation layer generated near the vortex tongue during impeller rotation, thus reducing noise and increasing the airflow velocity at the outlet. Preferably, the diameter of the micro-holes 4 is 1.5-2.5 mm. The diameter is not too small, which would weaken the vortex weakening effect near the vortex tongue, nor too large, which would weaken the catching effect of the first blade 2. Further optimization reveals that when the aperture of the micro-hole 4 is 2.0 mm, the effect in weakening the vortex and providing a better scouring effect is optimal. The alternating arrangement of the first blade 2 and the second blade 3 also ensures that the impeller has a good airflow, avoiding the impact of too many first blades 2 on the airflow and avoiding the reduction in the vortex weakening effect due to too many second blades 3.

[0031] Please see Figure 2 Multiple micro-holes 4 are arranged in an array. The micro-holes 4 arranged in an even array can more comprehensively weaken the vortex near the vortex tongue, avoiding uneven weakening of the vortex due to uneven setting, which would reduce the noise reduction effect. At the same time, it can also make the first blade 2 bear force evenly, avoiding the occurrence of bending and damage of the first blade 2 due to uneven force over a long period of time.

[0032] Furthermore, the impeller 1 includes a first fixing part 5, a second fixing part 6, and a reinforcing fixing part 7, all in an annular structure. The reinforcing fixing part 7 is disposed between the first fixing part 5 and the second fixing part 6. The first blade 2 and the second blade 3 pass through the reinforcing fixing part 7 and are respectively connected to the first fixing part 5 and the second fixing part 6. The first fixing part 5 and the second fixing part 6 are used to fix the first blade 2 and the second blade 3. The reinforcing fixing part 7 is used to fix the intermediate structure of the first blade 2 and the second blade 3, thereby strengthening the structure of the first blade 2 and the second blade 3 and reducing the possibility of the first blade 2 and the second blade 3 bending during rotation and the possibility of deformation from slight contact with external objects.

[0033] Please see Figure 2 , 4 -5. A first through hole 8 is provided on the surface of the first fixing part 5, and a second through hole 9 corresponding to the first through hole 8 is provided on the second fixing part 6. First insertion bending parts 10 matching the first through hole 8 and the second through hole 9 are provided at both ends of the first blade 2. After the first insertion bending parts 10 at both ends of the first blade 2 are inserted into the first through hole 8 and the second through hole 9, they are bent under the action of external force to achieve connection with the first fixing part 5 and the second fixing part 6. Specifically, the first blade 2 and the impeller 1 can be connected by the worker using a special tool such as a small hammer to insert the first insertion bending parts 10 into the first through hole 8 and the second through hole 9 and then bend them. This has a better connection stability and will not easily separate, which is beneficial to improving the service life of the impeller.

[0034] Please see Figure 3 , 5 A third through hole 11 is provided on the surface of the first fixing part 5, and a fourth through hole 12 corresponding to the third through hole 11 is provided on the second fixing part 6. Second insertion bending parts 13, matching the third through hole 11 and the fourth through hole 12, are provided at both ends of the second blade 3. After being inserted into the third through hole 11 and the fourth through hole 12, the second insertion bending parts 13 at both ends of the second blade 3 are bent under external force to achieve connection with the first fixing part 5 and the second fixing part 6. Specifically, workers can use a special tool, such as a small hammer, to insert the second insertion bending part 13 into the third through hole 11 and the fourth through hole 12 and then bend it to achieve the connection between the second blade 3 and the impeller 1. This connection has a better degree of stability, does not easily separate, and helps to improve the service life of the impeller.

[0035] Please see Figure 5A fifth through hole 14, matching the cross-sectional shape of the first blade 2, is provided on the reinforcing fixing part 7. The first blade 2 passes through the fifth through hole 14 and its middle position contacts the fifth through hole 14. The two ends of the first blade 2 are connected to the first fixing part 5 and the second fixing part 6, respectively. The reinforcing fixing part 7 contacts part of the structure of the first blade 2 through the fifth through hole 14, thereby strengthening the structural strength of the first blade 2 and reducing the possibility of bending in the middle part of the first blade 2 during rotation.

[0036] Please continue reading. Figure 5 A sixth through hole 15, matching the cross-sectional shape of the second blade 3, is provided on the reinforcing fixing part 7. The second blade 3 passes through the sixth through hole 15 and contacts the sixth through hole 15 at its middle position. The two ends of the second blade 3 are connected to the first fixing part 5 and the second fixing part 6, respectively. The reinforcing fixing part 7 contacts part of the structure of the second blade 3 through the sixth through hole 15, thereby strengthening the structural strength of the second blade 3 and reducing the possibility of bending in the middle part of the second blade 3 during rotation.

[0037] This utility model also provides a fan structure for a range hood (not shown in the figure), which includes the aforementioned impeller, which can rotate under the drive of the motor of the fan structure of the range hood to transport out the fumes.

[0038] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0044] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0045] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An impeller, characterized by: It includes an impeller, a first blade, and a second blade. Multiple first blades and multiple second blades are provided. The first blades and the second blades are alternately arranged on the impeller. Multiple micro-holes are provided on the first blade.

2. The impeller according to claim 1, characterized in that: The first blade and the second blade are arc-shaped as a whole.

3. The impeller according to claim 1, characterized in that: The bladed disk includes a first fixing part and a second fixing part in the form of a ring. A first through hole is provided on the surface of the first fixing part, and a second through hole corresponding to the first through hole is provided on the second fixing part. A first insertion bending part matching the first through hole and the second through hole is provided at both ends of the first blade. After the first insertion bending part at both ends of the first blade is inserted into the first through hole and the second through hole, it bends under the action of external force to achieve connection with the first fixing part and the second fixing part.

4. The impeller according to claim 3, characterized in that: A third through hole is provided on the surface of the first fixing part, and a fourth through hole corresponding to the third through hole is provided on the second fixing part. A second insertion bending part matching the third through hole and the fourth through hole is provided at both ends of the second blade. After the second insertion bending part at both ends of the second blade is inserted into the third through hole and the fourth through hole, it bends under the action of external force to achieve connection with the first fixing part and the second fixing part.

5. The impeller according to claim 3, characterized in that: The bladed disk also includes a reinforcing fixing part in the form of a ring structure. The reinforcing fixing part is disposed between the first fixing part and the second fixing part. A fifth through hole matching the cross-sectional shape of the first blade is opened on the reinforcing fixing part. The first blade passes through the fifth through hole and its middle position contacts the fifth through hole. The two ends of the first blade are respectively connected to the first fixing part and the second fixing part.

6. The impeller according to claim 5, characterized in that: A sixth through hole matching the cross-sectional shape of the second blade is provided on the reinforcing fixing part. The second blade passes through the sixth through hole and its middle position contacts the sixth through hole. The two ends of the second blade are respectively connected to the first fixing part and the second fixing part.

7. The impeller according to claim 1, characterized in that: The diameter of the micropore is 1.5-2.5 mm.

8. The impeller according to claim 1, characterized in that: The multiple micropores are arranged in an array.

9. A fan structure for a range hood, characterized in that: Includes the impeller as described in any one of claims 1-8.

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