A wind increasing and noise reducing impeller

Abstract

The utility model relates to a fan technical field, concretely relates to a kind of wind-increasing noise-reducing impeller, including top disc piece, bottom disc piece and the multiple arc blades of annular array fixed between top disc piece and bottom disc piece, the arc blade includes air suction introduction section and exhaust air export section, the cross section of air suction introduction section and exhaust air export section is all concave arc structure and thick in the middle and thin at both ends, air suction introduction section outer edge gradually extends outward from below to above, exhaust air export section inner edge is arc contraction from below to above, the longitudinal section of exhaust air export section inner edge is convex streamline type structure.The utility model wind-increasing noise-reducing impeller is through the construction high-efficiency airflow channel, reduce air resistance, strengthen airflow capture and import efficiency;Meanwhile, the cross section of air suction introduction section and exhaust air export section is all concave arc structure and thick in the middle and thin at both ends, adaptive airflow wall effect, suppress vortex, weaken blade vibration, realize noise reduction and wind-increasing.

Description

Technical Field

[0001] This utility model relates to the field of ventilation fan technology, specifically to an air-enhancing and noise-reducing impeller. Background Technology

[0002] The impellers of existing fans generally consist of a top disc, curved blades, and a bottom disc. The two ends of the curved blades are directly welded to the top and bottom discs, respectively, and then a shaft is installed on the bottom disc to drive the impeller to rotate. However, existing fans have the disadvantages of small air volume and high noise. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a wind-enhancing and noise-reducing impeller.

[0004] The objective of this utility model is achieved through the following technical solution: a wind-enhancing and noise-reducing impeller, comprising a top disc, a bottom disc, and a ring array of multiple arc-shaped blades fixed between the top and bottom discs. Each arc-shaped blade includes an air intake section and an air exhaust section. Both the air intake section and the air exhaust section have concave arc-shaped cross-sections, thicker in the middle and thinner at both ends. The air intake section includes an outer edge and an inner edge, with the overall thickness of the outer edge being less than the overall thickness of the inner edge. The outer edge of the air intake section gradually extends outward from bottom to top. The air exhaust section includes an outer edge and an inner edge, with the overall thickness of the outer edge being less than the overall thickness of the inner edge. The inner edge of the air exhaust section tapers in an arc shape from bottom to top, and its longitudinal section is a convex streamlined structure.

[0005] Furthermore, the bottom plate has an air inlet in the center and the top plate has an air outlet in the center, with the central axis of the air inlet and the central axis of the air outlet being collinear.

[0006] Furthermore, the outer edge of the top disc is folded upward to form a first vertical annular wall, and the inner edge of the top disc extends upward to form a trumpet-shaped guide. The cross-section of the trumpet-shaped guide is non-linearly tapering from bottom to top, and the tapering rate gradually increases.

[0007] Furthermore, the outer edge of the bottom disc is folded downward to form a second vertical annular wall, and multiple mounting holes are formed in a circumferential annular array along the inner edge of the bottom disc.

[0008] Furthermore, the top of the outer edge of the exhaust outlet section is provided with an arc-shaped notch, which is adapted to the horn-shaped guide tube.

[0009] Furthermore, the number of the arc-shaped blades is four to six.

[0010] The beneficial effects of this utility model are as follows: The air intake section of the air-increasing and noise-reducing impeller has a thick outer edge and a thin inner edge, with the outer edge expanding outward from bottom to top. Combined with the streamlined inner edge of the exhaust section, it constructs an efficient airflow channel. The former reduces air intake resistance and enhances airflow capture and introduction efficiency, while the latter allows airflow to be smoothly discharged, reducing energy loss. The intake and exhaust sections work together to boost airflow. At the same time, the cross-sections of both the air intake section and the exhaust section are concave arc-shaped structures that are thick in the middle and thin at both ends, which adapts to the airflow adhesion effect, suppresses eddies, reduces impact and friction noise, weakens blade vibration, and achieves synergistic noise reduction and airflow enhancement functions, optimizing the impeller's ventilation and quietness performance. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present invention.

[0012] Figure 2 This is a perspective view of the top plate component described in this utility model.

[0013] Figure 3 This is a perspective view of the bottom plate component described in this utility model.

[0014] Figure 4 This is a perspective view of the arc-shaped blade described in this utility model.

[0015] Figure 5 This is a longitudinal cross-sectional view of the arc-shaped blade described in this utility model.

[0016] Figure 6 This is a transverse cross-sectional view of the air intake section of the arc-shaped blade described in this utility model.

[0017] Figure 7 This is a transverse cross-sectional view of the exhaust outlet section of the arc-shaped blade described in this utility model.

[0018] The attached diagram is labeled as follows: top plate 1, air outlet 11, first vertical annular wall 12, horn-shaped guide 13, bottom plate 2, air inlet 21, second vertical annular wall 22, mounting hole 23, arc-shaped blade 3, suction inlet section 31, suction inlet section outer edge 311, suction inlet section inner edge 312, exhaust outlet section 32, exhaust outlet section outer edge 321, exhaust outlet section inner edge 322, and arc-shaped notch 323. Detailed Implementation

[0019] To facilitate understanding by those skilled in the art, the following description is provided in conjunction with embodiments and appendices. Figure 1-7 The present invention will be further described below. The content mentioned in the embodiments is not intended to limit the present invention.

[0020] See Figure 1-7An air-enhancing and noise-reducing impeller includes a top disc 1, a bottom disc 2, and a ring array of multiple arc-shaped blades 3 fixed between the top disc 1 and the bottom disc 2. Each arc-shaped blade 3 includes an air intake section 31 and an air exhaust section 32. Both the air intake section 31 and the air exhaust section 32 have concave arc-shaped cross-sections that are thicker in the middle and thinner at both ends. The air intake section 31 includes an outer edge 311 and an inner edge 312. The overall thickness of 11 is less than the overall thickness of the inner edge 312 of the suction inlet section. The outer edge 311 of the suction inlet section gradually extends outward from bottom to top. The exhaust outlet section 32 includes the outer edge 321 and the inner edge 322 of the exhaust outlet section. The overall thickness of the outer edge 321 of the exhaust outlet section is less than the overall thickness of the inner edge 322 of the exhaust outlet section. The inner edge 322 of the exhaust outlet section tapers in an arc shape from bottom to top. The longitudinal section of the inner edge 322 of the exhaust outlet section is a convex streamlined structure.

[0021] The air intake section 31 of this utility model has a thick outer edge and a thin inner edge, with the outer edge expanding outward from bottom to top. Combined with the streamlined inner edge of the exhaust outlet section 32, it forms an efficient airflow channel. The former reduces air intake resistance and enhances airflow capture and introduction efficiency, while the latter allows airflow to be smoothly discharged, reducing energy loss. The intake and exhaust work together to boost airflow. At the same time, the cross-sections of both the air intake section 31 and the exhaust outlet section 32 are concave arc-shaped structures that are thick in the middle and thin at both ends, which adapts to the airflow adhesion effect, suppresses eddies, reduces impact and friction noise, weakens blade vibration, and achieves synergistic noise reduction and airflow enhancement functions, optimizing the impeller's ventilation and quietness performance.

[0022] In this embodiment, the bottom plate 2 has an air inlet 21 in the center, and the top plate 1 has an air outlet 11 in the center. The central axis of the air inlet 21 and the central axis of the air outlet 11 are collinear. The collinearity of the central axis of the air inlet 21 and the central axis of the air outlet 11 can form a smooth axial airflow channel, allowing the airflow to flow efficiently in a straight line, reducing the resistance caused by the bend in the channel, and reducing the loss of air volume.

[0023] In this embodiment, the outer edge of the top disc 1 is folded upward to form a first vertical annular wall 12, and the inner edge of the top disc 1 extends upward to form a trumpet-shaped guide 13. The cross-section of the trumpet-shaped guide 13 is non-linearly tapering from bottom to top, and the tapering rate gradually increases. The trumpet-shaped guide 13 and the non-linearly tapering cross-section form a tapering pressurizing flow channel, which accelerates the tapering rate along the direction of the air outlet 11, thereby accelerating the airflow, increasing the air outlet speed and air volume, and enhancing the air enhancement effect.

[0024] In this embodiment, the outer edge of the bottom disc 2 is folded downward to form a second vertical annular wall 22, and multiple mounting holes 23 are arranged in a circumferential annular array along the inner edge of the bottom disc 2. The second vertical annular wall 22 folds downward to form a barrier structure, which can constrain the airflow around the air inlet 21, reduce external turbulence interference, guide the airflow to be drawn in more stably from the air inlet 21 axially, and reduce the noise generated by the airflow hitting the edge of the chassis; the mounting holes 23 facilitate the installation of the impeller and the drive device.

[0025] In this embodiment, an arc-shaped notch 323 is provided at the top of the outer edge 321 of the exhaust outlet section, and the arc-shaped notch 323 is adapted to the funnel-shaped guide 13. The adaptation design of the arc-shaped notch 323 and the funnel-shaped guide 13 forms a continuously and gradually changing flow channel boundary, which can avoid kinetic energy loss caused by abrupt changes in the flow channel and avoid a decrease in the exhaust velocity.

[0026] In this embodiment, the number of arc-shaped blades 3 is four to six. To achieve the best performance of this invention, the number of arc-shaped blades 3 is set to five.

[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A noise-reducing and air-boosting impeller comprising a top disc, a bottom disc, and a plurality of arc-shaped blades in an annular array fixed between the top disc and the bottom disc, characterized in that: The arc-shaped blade includes an air intake section and an air exhaust section. Both the air intake section and the air exhaust section have concave arc-shaped cross-sections that are thicker in the middle and thinner at both ends. The air intake section includes an outer edge and an inner edge. The overall thickness of the outer edge is less than the overall thickness of the inner edge. The outer edge of the air intake section gradually extends outward from bottom to top. The air exhaust section includes an outer edge and an inner edge. The overall thickness of the outer edge is less than the overall thickness of the inner edge. The inner edge of the air exhaust section tapers in an arc shape from bottom to top. The longitudinal section of the inner edge of the air exhaust section is a convex streamlined structure.

2. The wind increasing and noise reducing impeller according to claim 1, characterized in that: An air inlet is provided in the center of the bottom plate, and an air outlet is provided in the center of the top plate. The central axis of the air inlet and the central axis of the air outlet are collinear.

3. The wind increasing and noise reducing impeller according to claim 1, characterized in that: The outer edge of the top disc is folded upward to form a first vertical annular wall, and the inner edge of the top disc extends upward to form a trumpet-shaped guide. The cross-section of the trumpet-shaped guide gradually narrows from bottom to top, and the narrowing rate gradually increases.

4. The air-enhancing and noise-reducing impeller according to claim 1, characterized in that: The outer edge of the bottom disc is folded downward to form a second vertical annular wall, and multiple mounting holes are arranged in a circumferential annular array along the inner edge of the bottom disc.

5. The air-enhancing and noise-reducing impeller according to claim 3, characterized in that: The top of the outer edge of the exhaust outlet section is provided with an arc-shaped notch, which is adapted to the horn-shaped guide tube.

6. The air-enhancing and noise-reducing impeller according to claim 1, characterized in that: The number of the arc-shaped blades is four to six.

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