Noise reduction impeller for range hood

Abstract

The utility model relates to a noise reduction impeller for a range hood, and belongs to the field of kitchen appliances. The impeller comprises an impeller upper edge ring, an impeller middle ring and an impeller lower edge ring, and the impeller middle ring is arranged between the impeller upper edge ring and the impeller lower edge ring. The first blades and the second blades are arranged on the impeller upper edge ring, the impeller middle ring and the impeller lower edge ring in a circumferential array mode, the first blades and the second blades are arranged at intervals, noise reduction holes are formed in the first blades, and the first blades and the second blades are arranged in an arc-shaped structure. An upper edge ring limiting groove is formed in the impeller upper edge ring, the upper end of the first blade penetrates through the upper edge ring limiting groove and is bent to form a first upper bent hook, and the upper end of the second blade penetrates through the upper edge ring limiting groove and is bent to form a second upper bent hook.

Description

Technical Field

[0001] This utility model relates to a noise-reducing impeller for a range hood, belonging to the field of kitchen appliances. Background Technology

[0002] Range hoods are used to exhaust fumes produced during cooking in the kitchen. When the range hood is running, it relies on the rotation of its internal impeller to expel the fumes. During operation, the range hood will generate noise. In the current technology, most range hoods in China currently use sound-absorbing cotton to reduce noise, which is costly and inconvenient to install. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and to provide a noise-reducing impeller for range hoods with a reasonable structural design.

[0004] The technical solution adopted by this utility model to solve the above problems is: the noise-reducing impeller for the range hood includes an upper impeller ring, a middle impeller ring, and a lower impeller ring. The middle impeller ring is located between the upper impeller ring and the lower impeller ring. Its structural feature is that it also includes a first blade and a second blade. The first blade and the second blade are arranged in a circumferential array on the upper impeller ring, the middle impeller ring, and the lower impeller ring, and the first blade and the second blade are arranged alternately. The first blade is provided with noise-reducing holes.

[0005] Furthermore, both the first blade and the second blade are arranged in an arc shape.

[0006] Furthermore, the upper edge ring of the impeller is provided with an upper edge ring limiting groove, the upper end of the first blade passes through the upper edge ring limiting groove and is bent to form a first upper bending hook, and the upper end of the second blade passes through the upper edge ring limiting groove and is bent to form a second upper bending hook.

[0007] Furthermore, the impeller has a central groove, and both the first blade and the second blade pass through the central groove.

[0008] Furthermore, a lower edge ring limiting groove is provided on the lower edge ring of the impeller. The lower end of the first blade passes through the lower edge ring limiting groove and is bent to form a first lower bending hook. The lower end of the second blade passes through the lower edge ring limiting groove and is bent to form a second lower bending hook.

[0009] Furthermore, a flange is installed on the impeller's middle ring.

[0010] Furthermore, the noise reduction hole is a circular hole with a diameter of D, where D = 2 mm.

[0011] Furthermore, the distance between the two noise reduction holes set along the length direction of the first blade is L1, and the distance between the two noise reduction holes set along the width direction of the first blade is L2, where L1 = L2 = 12mm.

[0012] Compared with the prior art, this utility model has the following advantages: the noise reduction impeller of the range hood directly reduces noise by evenly distributing the first blade of the impeller throughout the noise reduction holes, thus eliminating the need to install sound-absorbing cotton inside the range hood while ensuring that the appearance of the range hood remains unchanged. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural schematic diagram of the noise-reducing impeller for a range hood according to an embodiment of the present invention.

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the noise-reducing impeller for a range hood according to an embodiment of the present utility model.

[0015] Figure 3 This is a three-dimensional structural schematic diagram of the noise-reducing impeller for a range hood according to an embodiment of the present utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the first blade according to an embodiment of the present invention.

[0017] Figure 5 This is a three-dimensional structural diagram of the second blade in an embodiment of this utility model.

[0018] Figure 6 This is a schematic diagram of the main structure of the first blade in an embodiment of this utility model.

[0019] In the diagram: 1. Upper impeller ring; 2. Middle impeller ring; 3. Lower impeller ring; 4. Blade No. 1; 5. Blade No. 2; 6. Noise reduction hole; 7. Flange.

[0020] Upper ring limiting groove 11

[0021] Middle ring through groove 21,

[0022] Lower ring limiting groove 31

[0023] No. 1 upward bend hook 41, No. 1 downward bend hook 42

[0024] No. 2 upward bend hook 51, No. 2 downward bend hook 52. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0026] Example

[0027] See Figures 1 to 6 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted in this specification are merely for illustrative purposes to aid those skilled in the art and to provide a clear understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is solely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] The noise-reducing impeller for the range hood in this embodiment includes an upper impeller ring 1, an inner impeller ring 2, a lower impeller ring 3, a first blade 4, and a second blade 5. The inner impeller ring 2 is located between the upper impeller ring 1 and the lower impeller ring 3, and a flange 7 is installed on the inner impeller ring 2.

[0029] In this embodiment, blade 4 and blade 5 are arranged in a circular array on the upper ring 1, middle ring 2 and lower ring 3 of the impeller, and blade 4 and blade 5 are arranged alternately. Noise reduction hole 6 is provided on blade 4.

[0030] In this embodiment, the upper edge ring 1 of the impeller is provided with an upper edge ring limiting groove 11. The upper end of the first blade 4 passes through the upper edge ring limiting groove 11 and is bent to form a first upper bending hook 41. The upper end of the second blade 5 passes through the upper edge ring limiting groove 11 and is bent to form a second upper bending hook 51.

[0031] In this embodiment, the impeller middle ring 2 is provided with a middle ring through groove 21, and the first blade 4 and the second blade 5 both penetrate the middle ring through groove 21. The first blade 4 and the second blade 5 are both arranged in an arc shape.

[0032] In this embodiment, the lower edge ring 3 of the impeller is provided with a lower edge ring limiting groove 31. The lower end of the first blade 4 passes through the lower edge ring limiting groove 31 and is bent to form a first lower bending hook 42. The lower end of the second blade 5 passes through the lower edge ring limiting groove 31 and is bent to form a second lower bending hook 52.

[0033] In this embodiment, the noise reduction hole 6 is a circular hole with a diameter of D, where D = 2 mm. The distance between the two noise reduction holes 6 arranged along the length direction of the first blade 4 is L1, and the distance between the two noise reduction holes 6 arranged along the width direction of the first blade 4 is L2, where L1 = L2 = 12 mm.

[0034] Specifically, the material, blade shape, position, and number of all parts of the noise-reducing impeller are not restricted. The first blade 4 is covered with noise-reducing holes 6, the spacing of the noise-reducing holes 6 is 12, and the diameter of the noise-reducing holes 6 is 2.0. The first blade 4 and the second blade 5 are arranged alternately.

[0035] By covering the first blade 4 with noise reduction holes 6, the fluid velocity is lower when passing through the noise reduction holes 6, reducing flow velocity oscillation and eddy currents. At the same time, the streamline is smoother, reducing noise generation.

[0036] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A noise-reducing impeller for a range hood, comprising an upper impeller ring (1), an inner impeller ring (2), and a lower impeller ring (3), wherein the inner impeller ring (2) is disposed between the upper impeller ring (1) and the lower impeller ring (3), characterized in that: It also includes blade number 1 (4) and blade number 2 (5), which are arranged in a circular array on the upper edge ring (1), middle edge ring (2) and lower edge ring (3) of the impeller, and blade number 1 (4) and blade number 2 (5) are arranged alternately. Noise reduction holes (6) are provided on blade number 1 (4).

2. The noise-reducing impeller for a range hood according to claim 1, characterized in that: Both blade No. 1 (4) and blade No. 2 (5) are arranged in an arc shape.

3. The noise-reducing impeller for a range hood according to claim 1, characterized in that: The impeller upper ring (1) is provided with an upper ring limiting groove (11). The upper end of the first blade (4) passes through the upper ring limiting groove (11) and is bent to form a first upper bending hook (41). The upper end of the second blade (5) passes through the upper ring limiting groove (11) and is bent to form a second upper bending hook (51).

4. The noise-reducing impeller for a range hood according to claim 1, characterized in that: The impeller middle ring (2) is provided with a middle ring through groove (21), and the first blade (4) and the second blade (5) both penetrate the middle ring through groove (21).

5. The noise-reducing impeller for a range hood according to claim 1, characterized in that: The impeller lower ring (3) is provided with a lower ring limiting groove (31). The lower end of the first blade (4) passes through the lower ring limiting groove (31) and is bent to form a first lower bending hook (42). The lower end of the second blade (5) passes through the lower ring limiting groove (31) and is bent to form a second lower bending hook (52).

6. The noise-reducing impeller for a range hood according to claim 1, characterized in that: A flange (7) is installed on the impeller middle ring (2).

7. The noise-reducing impeller for a range hood according to claim 1, characterized in that: The noise reduction hole (6) is a circular hole with a diameter of D, where D = 2 mm.

8. The noise-reducing impeller for a range hood according to claim 1, characterized in that: The distance between the two noise reduction holes (6) set along the length direction of the first blade (4) is L1, and the distance between the two noise reduction holes (6) set along the width direction of the first blade (4) is L2, L1 = L2 = 12mm.

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