Silent fan blade

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a silent fan blade which comprises an installation portion, the middle of the installation portion protrudes towards one side, and a convex face and a concave face are arranged on the front side and the back side of the installation portion respectively. The arc-shaped guide vanes are arranged on the convex surface in a surrounding manner and are used for guiding flow; the connecting seat is arranged at the center of the concave surface, and the connecting seat is used for being connected with an external driving source; the plurality of supporting raised lines are arranged on the concave surface in a surrounding manner; each supporting protruding strip inclines from the outer edge of the concave face to the center of the concave face and is connected to the connecting base. Due to the fact that the supporting protruding strip is connected between the connecting boss and the connecting base, the supporting protruding strip can play a role in supporting the installation part. In addition, the supporting protruding strips incline from the outer edges of the concave faces to the centers of the concave faces, and hollow parts are formed above the supporting protruding strips. The hollow part can reduce the contact area between the supporting boss and the air when the mounting part rotates, so that the noise generated when the fan blade rotates is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps, in particular to a silent fan blade. Background Art

[0002] Chinese utility model 2023203786595 discloses a silent fan blade, comprising a mounting portion and a blade portion; the mounting portion is mounted on an external driving portion; the blade portion has a plurality of arc-shaped air guide blades, and the air guide blades are fixedly mounted on the mounting portion.

[0003] The mounting portion of the patent is also provided with reinforcing ribs, and the width of the reinforcing ribs gradually narrows from one end close to the drive connection hole to the end close to the edge of the mounting cavity, so that the reinforcing ribs have a certain width. When the fan blade rotates, the reinforcing ribs with a certain width will collide with the airflow, thereby generating noise. Summary of the invention

[0004] The utility model aims to provide a silent fan blade which can effectively reduce noise.

[0005] The purpose of the utility model is achieved in this way:

[0006] A silent fan blade, comprising:

[0007] A mounting portion, wherein the middle portion of the mounting portion is raised toward one side, and a convex surface and a concave surface are respectively provided on the front and back sides of the mounting portion;

[0008] A plurality of arc-shaped guide vanes, which are arranged around the convex surface and are used for guiding flow; and

[0009] A connecting seat, arranged at the center of the concave surface, and used for connecting to an external driving source;

[0010] A plurality of supporting convex strips are arranged around the concave surface; each of the supporting convex strips is inclined from the outer edge of the concave surface toward the center of the concave surface and is connected to the connecting seat.

[0011] Furthermore, a connecting boss is provided on the outer edge of the concave surface, and the outer end of the supporting convex strip is connected to the side wall of the connecting boss.

[0012] Furthermore, the thickness of the supporting ridges is the same from the outside to the inside.

[0013] Furthermore, a plurality of reinforcing ridges are fixed on the outer wall of the connecting seat, and the reinforcing ridges are downwardly connected to one end of the supporting ridges.

[0014] Furthermore, a slot is provided in the connection seat, and a connection hole is provided at the bottom of the slot for inserting an external driving source and a fastener is provided in the connection hole for fixing.

[0015] Furthermore, the supporting convex strip is arc-shaped.

[0016] Furthermore, the thickness of the supporting convex strip is between 0.5cm and 3cm.

[0017] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0018] In this patent, since the support convex strip is connected between the connecting boss and the connecting seat, it can play a role in supporting the mounting portion; and since the support convex strip is inclined from the outer edge of the concave surface toward the center of the concave surface, a hollow portion is formed above the support convex strip. The hollow portion can reduce the contact area between the support boss and the air when the mounting portion rotates, thereby reducing the noise generated when the fan blade rotates. In addition, since the support convex strip in this patent is arc-shaped, it is adapted to the rotation direction of the silent fan blade, and can better guide the gas flow direction to reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the water pump.

[0020] Figure 2 It is a schematic diagram of the structure of the convex surface of the silent fan blade.

[0021] Figure 3 It is a schematic diagram of the structure of the concave surface of the silent fan blade.

[0022] The meaning of the symbols in the figure:

[0023] 1. Mounting part; 11. Convex surface; 12. Concave surface; 2. Arc guide vane; 3. Connecting seat; 31. Strengthening convex strip; 32. Slot; 33. Connecting hole; 4. Supporting convex strip; 41. Empty part; 5. Connecting boss; 6. Fluid pump housing; 7. Motor housing; DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with specific embodiments:

[0025] A silent fan blade, which is used in a water pump, such as Figure 1-3 As shown, the water pump includes a fluid pump housing 6 , in which a chamber for fluid medium to pass is provided, an outlet is provided on the upper side of the fluid pump housing 6 , and a motor housing 7 is fixed beside the fluid pump housing 6 .

[0026] A driving motor is provided in the motor housing 7 , and the driving motor drives a driving main shaft. One end of the driving main shaft is connected to an impeller located in the motor housing 7 , and the other end is connected to the silent fan blade located outside the motor housing 7 .

[0027] like Figure 3As shown, the silent fan blade includes a mounting portion 1, an arc-shaped guide vane 2, a connecting seat 3 and a supporting convex strip 4; the mounting portion 1 is in a flat circular shape, and the middle portion of the mounting portion 1 bulges toward one side to form a convex surface 11 and a concave surface 12 on the front and back surfaces of the mounting portion 1. The arc-shaped guide vanes 2 are provided with a plurality of arc-shaped guide vanes 2, which are connected to the convex surface 11 in a surrounding manner; the connecting seat 3 is fixed on the center of the concave surface 12, and the connecting seat 3 is used to connect to an external driving source, and the mounting portion 1 is driven to rotate by the external driving source, and the arc-shaped guide vanes 2 on the mounting portion 1 are used to guide the flow.

[0028] In this embodiment, the connecting seat 3 is cylindrical and has a slot 32 therein. A connecting hole 33 is provided at the bottom of the slot 32. Since in the embodiment, the silent fan blade is used in a water pump, the driving shaft of the water pump can be inserted into the slot 32, and the driving shaft is fixed in the slot 32 by a fastener provided in the connecting hole 33 at the bottom of the slot 32 to achieve connection.

[0029] There are a plurality of support ridges 4, which are arranged around the concave surface 12; each support ridge 4 is inclined from the outer edge of the concave surface 12 toward the center of the concave surface 12, and is connected to the connection seat 3. Figure 3 As shown, in this embodiment, the supporting convex strips 4 are provided with five, the supporting convex strips 4 are arc-shaped, and are distributed in a spiral shape on the outer edge of the connecting seat 3. In fact, a connecting boss 5 is provided on the outer edge of the concave surface 12, and the height of the connecting boss 5 is consistent with the thickness of the supporting convex strips 4. The supporting convex strips 4 are integrally formed and arranged on the concave surface 12, and the outer ends thereof are integrally formed and connected with the connecting boss 5.

[0030] At this time, since the support rib 4 is connected between the connection boss 5 and the connection seat 3, it can play a role in supporting the mounting portion 1; and since the support rib 4 is inclined from the outer edge of the concave surface 12 toward the center of the concave surface 12, a hollow portion 41 is formed above the support rib 4. The hollow portion 41 can reduce the contact area between the support boss and the air when the mounting portion 1 rotates, thereby reducing the noise generated when the fan blade rotates. In addition, since the support rib 4 in this patent is arc-shaped, it is adapted to the rotation direction of the silent fan blade, and can better guide the gas flow direction to reduce noise.

[0031] Furthermore, the thickness of the support ridge 4 is the same from the outside to the inside, and its thickness is maintained between 0.5cm and 3cm; the support ridge 4 with uniform thickness forms an arc-shaped upper end surface on the support boss, which can make the gas flow smoother, thereby better guiding the gas flow direction to reduce noise.

[0032] Furthermore, a plurality of reinforcing ridges 31 are fixed on the outer wall of the connecting seat 3, and the reinforcing ridges 31 are downwardly connected to one end of the supporting ridges 4. Figure 3 As shown, there are 5 reinforcing ribs 31 arranged vertically, and the reinforcing ribs 31 are integrally formed with the supporting ribs 4, and the overall shape is approximately "L". The connection between the supporting ribs 4 and the reinforcing ribs 31 strengthens the supporting structure on the mounting portion 1, thereby improving the overall strength of the mounting portion 1.

[0033] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A silent fan blade, characterized in that: include: A mounting portion (1), wherein a middle portion of the mounting portion (1) is raised toward one side, and a convex surface (11) and a concave surface (12) are respectively provided on the front and back sides of the mounting portion (1); a plurality of arc-shaped guide vanes (2) which are arranged around the convex surface (11) and are used for guiding flow; and A connecting seat (3) is arranged at the center of the concave surface (12), and the connecting seat (3) is used to connect to an external driving source; A plurality of supporting convex strips (4) are arranged around the concave surface (12); each of the supporting convex strips (4) is inclined from the outer edge of the concave surface (12) toward the center of the concave surface (12) and is connected to the connecting seat (3); a hollow portion (41) is formed above the supporting convex strips (4).

2. The silent fan blade according to claim 1, characterized in that: A connecting boss (5) is provided on the outer edge of the concave surface (12), and the outer end of the supporting convex strip (4) is connected to the side wall of the connecting boss (5).

3. The silent fan blade according to claim 1, characterized in that: The thickness of the supporting convex strip (4) is the same from the outside to the inside.

4. The silent fan blade according to claim 1, characterized in that: A plurality of reinforcing ridges (31) are fixed on the outer wall of the connecting seat (3), and the reinforcing ridges (31) are downwardly connected to one end of the supporting ridges (4).

5. The silent fan blade according to claim 1, characterized in that: The connection seat (3) is provided with a slot (32), and a connection hole (33) is provided at the bottom of the slot (32) for inserting an external drive source and a fastener is arranged in the connection hole (33) for fixing.

6. A silent fan blade according to any one of claims 1 to 5, characterized in that: The supporting convex strip (4) is arc-shaped.

7. A silent fan blade according to any one of claims 1 to 5, characterized in that: The thickness of the supporting convex strip (4) is between 0.5 cm and 3 cm.

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