CN217327808U

CN217327808U - Centrifugal fan blade

Info

Publication number: CN217327808U
Application number: CN202221186071.1U
Authority: CN
Inventors: 蒋宗益; 柳作强; 罗永东
Original assignee: Shaoxing Yiqiang Electric Appliance Technology Co ltd
Current assignee: Shaoxing Yiqiang Electric Appliance Technology Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-30
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses a centrifugation fan blade, including the carousel, carousel one side winds the even spaced in carousel center is provided with a plurality of blades, and the blade is the arc crooked, and is a plurality of the blade upper shield is equipped with the position fixing cover, the position fixing cover is with a plurality of blade fixed connection, the position fixing cover center is provided with the air intake, the position fixing cover periphery with carousel periphery and a plurality of form a plurality of air outlets between the outside edge of blade. This kind of centrifugal fan blade passes through the carousel and fixes a position the cover and fix on the both sides of blade for blade location intensity is higher, and at the in-process that uses, the vibration and the deformation volume of blade are showing and are reducing, show the noise when reducing the operation, reduce the wind pressure loss, improve the efficiency that the electric energy changes into the aerodynamic energy, and simple structure, easy to assemble.

Description

Centrifugal fan blade

Technical Field

The utility model belongs to the technical field of centrifugal fan blade, specifically a centrifugal fan blade, centrifugal fan blade that in particular to hairdryer was used.

Background

In the prior art, blades adopted by the electric hair drier are generally axial flow blades, and the axial flow blades generally have small wind pressure and large flow in the working process. In order to enable the air blown out by the hair dryer in the using process to have larger wind pressure, some hair dryers also adopt centrifugal fan blades.

Current centrifugal fan blade generally includes a carousel, and carousel one side is revoluted the even spaced a plurality of blades that are provided with in carousel center, and the blade is the arc bending, and in the use, the motor is connected to the carousel, and the carousel rotates under the drive of motor, drives a plurality of blades and rotates for the gas at center flows to the carousel periphery. Because the centrifugal fan blade volume in the hairdryer is less, and the blade thickness is thinner, and generally adopt the plastics material preparation, can take place to warp and vibrate because of the lateral pressure of air at the high-speed pivoted in-process blade of carousel, lead to the noise great in the in-service use process, and because the loss of blade deformation vibration, the wind pressure does not reach predetermined wind pressure, causes the efficiency reduction that the electric energy changes into air kinetic energy.

Disclosure of Invention

The utility model discloses it is not enough to prior art, provide a centrifugal fan blade, noise when this kind of centrifugal fan blade can show the reduction operation reduces the wind pressure loss, improves the efficiency that the electric energy changes into the aerodynamic energy, and simple structure, easy to assemble.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve: the utility model provides a centrifugal fan blade, includes the carousel, carousel one side winds the even spaced a plurality of blades that are provided with in carousel center, the blade is the arc bending, and is a plurality of the blade upper shield is equipped with the position cover, the position cover with a plurality of blade fixed connection, the position cover center is provided with the air intake, the position cover periphery with carousel periphery and a plurality of form a plurality of air outlets between the outside edge of blade. This kind of centrifugal fan blade passes through the carousel and fixes a position the cover and fix on the both sides of blade for blade location intensity is higher, and at the in-process that uses, the vibration and the deformation volume of blade are showing and are reducing, show the noise when reducing the operation, reduce the wind pressure loss, improve the efficiency that the electric energy changes into the aerodynamic energy, and simple structure, easy to assemble.

In the above technical scheme, preferably, a plurality of insertion holes matched with the plurality of blades are formed in the bottom of the positioning cover, and the plurality of blades are inserted into the insertion holes in a one-to-one correspondence manner. By adopting the structure, the positioning cover and the blade are positioned more stably and accurately.

In the above technical solution, preferably, the insertion opening is formed between two protruding strips at the bottom of the positioning cover. Adopt this structure to make the blade can insert the socket between two sand grips, have more stable fixed effect.

In the above technical scheme, preferably, a plurality of the top parts of the blades are provided with limiting convex parts, the positioning cover is provided with limiting ports matched with the limiting convex parts, and the limiting convex parts are inserted into the limiting ports. The structure is adopted to further enhance the positioning between the blade and the positioning cover, and the assembly is convenient.

In the above technical solution, preferably, the limiting protrusions are arranged on three of the plurality of blades, and the three limiting protrusions are distributed in a triangular shape. The triangular positioning makes the positioning more reliable.

In the above technical scheme, preferably, the plurality of blades are close to the height of the center of the turntable is greater than the height of the center of the turntable, one side of the positioning cover close to the air inlet is provided with a cylindrical air inlet extending part, and one side of the plurality of blades close to the center of the turntable is inserted into the air inlet extending part. By adopting the structure, the blade and the air inlet extension part can be transversely positioned, and the limiting bulge part on the blade and the limiting opening are positioned, so that the positioning between the blade and the positioning cover is more stable.

In the above technical scheme, preferably, the center of the turntable is provided with a motor shaft mounting hole, and one surface of the turntable, which is provided with the blades, is an arc surface with the center higher than the edge. Adopt this structure to make the wind-guiding more smooth and easy.

In the above technical solution, preferably, the blade and the positioning cover are fixed by ultrasonic welding. And after the blade is positioned with the positioning cover, further improving the positioning firmness degree through ultrasonic welding.

Compared with the prior art, the utility model, following beneficial effect has: this kind of centrifugal fan blade passes through the carousel and fixes a position the cover and fix a position the both sides of blade for blade location intensity is higher, and at the in-process that uses, the vibration and the deformation volume of blade are showing and are reducing, show the noise when reducing the operation, reduce the wind pressure loss, improve the efficiency that the electric energy changes into the air-dynamic energy, and simple structure, easy to assemble.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a turntable according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the positioning cover in the embodiment of the present invention.

Fig. 4 is a schematic structural view of another view angle of the positioning cover in the embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, a centrifugal fan blade, including carousel 1, a plurality of blades 2 are provided with around the even interval in carousel 1 center on carousel 1 one side, and blade 2 is arc bending, and a plurality of blades 2 upper shield are equipped with position fixing cover 3, and position fixing cover 3 and a plurality of blade 2 fixed connection, position fixing cover 3 center are provided with air intake 4, form a plurality of air outlets 5 between the outside edge of position fixing cover 3 periphery and carousel 1 periphery and a plurality of blade 2. This kind of centrifugal fan blade is fixed on blade 2's both sides through carousel 1 and position guard 3 for blade 2 location intensity is higher, and at the in-process that uses, the vibration and the deformation volume of blade 2 are showing and are reducing, show the noise when reducing the operation, reduce the wind pressure loss, improve the efficiency that the electric energy changes into aerodynamic energy, and simple structure, easy to assemble. In the present embodiment, there are nine blades 2 in total.

In this embodiment, for making the position fixing cover 3 and blade 2 fix a position more stably and accurately, the bottom of the position fixing cover 3 is provided with nine sockets 31 matched with nine blades 2, and each blade 2 is inserted into the socket 31 in a one-to-one correspondence.

The insertion opening 31 in this embodiment is formed between two protruding ribs protruding from the bottom of the positioning cover 3.

In this embodiment, the top of some of the nine blades 2 is provided with a limiting protrusion 21, the positioning cover 3 is provided with a limiting opening 32 matched with the limiting protrusion 21, and the limiting protrusion 21 is inserted into the limiting opening 32. The structure is adopted to further enhance the positioning between the blade 2 and the positioning cover 3, and the assembly is convenient.

In this embodiment, three blades 2 of the nine blades 2 are provided with the limiting protrusions 21, and the three limiting protrusions 21 are distributed in a triangular shape. The triangular positioning makes the positioning more reliable.

In this embodiment, the height of the nine blades 2 near the center of the turntable 1 is greater than the height far away from the center of the turntable 1, a cylindrical air inlet extension 33 is disposed on one side of the positioning cover 3 near the air inlet 4, and one side of the nine blades 2 near the center of the turntable 1 is inserted into the air inlet extension 33. By adopting the structure, the blade 2 and the air inlet extension part 33 can be transversely positioned, and the limiting bulge part 21 on the blade 2 and the limiting opening 32 are positioned, so that the positioning between the blade 2 and the positioning cover 3 is more stable.

In this embodiment, the center of the turntable 1 is provided with a motor shaft mounting hole 11, and one surface of the turntable 1 having the blades 2 is an arc surface with the center higher than the edge. Adopt this structure to make the wind-guiding more smooth and easy.

In this embodiment, the blade 2 and the position cover 3 are fixed by ultrasonic welding. The positioning firmness is further improved by ultrasonic welding after the blade 2 is positioned with the positioning cover 3.

During the equipment, carousel 1 and blade 2 are integrated into one piece, and the position cover 3 covers and establishes the blade 2 top, then passes through ultrasonic bonding with blade 2 and position cover 3 welded fastening.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a centrifugal fan blade, includes carousel (1), carousel (1) one side is wound carousel (1) center evenly spaced is provided with a plurality of blades (2), and blade (2) are the arc crooked, its characterized in that: a plurality of blade (2) upper shield is equipped with location cover (3), location cover (3) and a plurality of blade (2) fixed connection, location cover (3) center is provided with air intake (4), location cover (3) periphery with carousel (1) periphery and a plurality of form a plurality of air outlets (5) between the outside edge of blade (2).

2. A centrifugal fan blade according to claim 1, wherein: the bottom of the positioning cover (3) is provided with a plurality of inserting holes (31) matched with the plurality of blades (2), and the plurality of blades (2) are correspondingly inserted into the plurality of inserting holes (31).

3. A centrifugal fan blade according to claim 2, wherein: the insertion opening (31) is formed between two raised convex strips at the bottom of the positioning cover (3).

4. A centrifugal fan blade according to claim 1, wherein: a plurality of the top of blade (2) is provided with spacing bellying (21), be provided with on position fixing cover (3) with spacing mouth (32) that spacing bellying (21) match, spacing bellying (21) insert spacing mouth (32).

5. A centrifugal fan blade according to claim 4, wherein: a plurality of three in blade (2) be equipped with on blade (2) spacing bellying (21), three spacing bellying (21) are triangle-shaped and distribute.

6. A centrifugal fan blade according to claim 4, wherein: a plurality of blade (2) are close to the height at carousel (1) center is greater than the height of keeping away from carousel (1) center, position fixing cover (3) are close to one side of air intake (4) is provided with cylindric air inlet extension (33), a plurality of blade (2) are close to one side at carousel (1) center inserts in the air inlet extension (33).

7. A centrifugal fan blade according to claim 1, wherein: the motor shaft mounting hole (11) is formed in the center of the rotary table (1), and the cambered surface, with the center higher than the edge, of one surface, provided with the blades (2), of the rotary table (1).

8. A centrifugal fan blade according to any one of claims 1 to 7, wherein: the blade (2) and the positioning cover (3) are fixed through ultrasonic welding.