A forward impeller

Abstract

The utility model discloses a forward impeller, including impeller main part, this impeller main part has the boss part and the rim part, this rim part is located the rim of this boss part, is equipped with a plurality of convex blade to this rim part, blade circular array is located the circumference of this boss part, and a plurality of blade another end all are connected with the frame, and the clearance between blade and boss part forms the airflow channel, and the central part of boss part is equipped with the shaft sleeve, is equipped with the rotating shaft in this shaft sleeve. The impeller main part of high -speed rotation is through the centrifugal force and the thrust of blade to the air of inhaled exerting, will mechanical energy conversion air's kinetic energy and potential energy, centrifugal force makes airflow along blade radial outward motion, and speed and pressure increase synchronously simultaneously, the airflow after being accelerated by impeller main part enters the volute of turbine, and the passage cross section area of volute gradually expands, and airflow's kinetic energy is further converted into pressure energy, and finally is stably discharged from the air outlet, realizes the airflow delivery of large air volume and high efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of impeller technology, specifically relating to a forward impeller. Background Technology

[0002] In the fields of ventilation, air conditioning, fluid transport and power equipment, the impeller, as a core rotating component, directly determines the airflow transport efficiency, operating noise and service life of the equipment. Due to its adaptability to large air volume and low air pressure, the forward impeller is widely used in household air conditioner indoor units, industrial cooling fans, fresh air systems and other scenarios.

[0003] However, existing forward impellers still have many technical pain points in practical applications, making it difficult to meet the current equipment's upgrade requirements for high efficiency, low noise, and high stability: the blades of traditional forward impellers mostly adopt straight plates or simple zigzag structures. When the airflow flows on the blade surface, boundary layer separation is easily generated, leading to airflow turbulence and the formation of vortices. This not only causes energy loss, but also reduces the actual air volume by 10%-20% compared to the design value. Especially under high speed conditions, the efficiency decay problem is more significant, making it unsuitable for the heat dissipation or ventilation requirements of high-power equipment. Utility Model Content

[0004] Solve the technical problem of low air delivery efficiency of existing impellers.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a forward impeller, comprising an impeller body having a protrusion and an edge portion, the edge portion being disposed at the edge of the protrusion, the edge portion having a plurality of protruding blades arranged in a circular array on the outer periphery of the protrusion, the other ends of the plurality of blades being connected to a frame, the gap between the blades and the protrusion forming an airflow channel, a bushing being disposed at the center of the protrusion, and a rotating shaft being disposed in the bushing.

[0006] Furthermore, the blades are designed with an arc-shaped structure.

[0007] Furthermore, reinforcing ribs are provided between the bottom wall and the side wall of the protrusion.

[0008] The present invention has the following advantages: the rotating shaft is connected to the motor and drives the impeller body to rotate at high speed. When the impeller body rotates, a negative pressure zone (lower than the external atmospheric pressure) is formed between its blades. Under the action of the pressure difference, the outside air is drawn into the airflow channel from the air inlet of the impeller body. The high-speed rotating impeller body applies centrifugal force and thrust to the air inhaled through the blades, converting mechanical energy into the kinetic and potential energy of the air. The centrifugal force causes the airflow to move outward along the radial direction of the blades, while the speed and pressure increase simultaneously. The airflow accelerated by the impeller body enters the volute of the turbine. The cross-sectional area of ​​the volute gradually expands, further converting the kinetic energy of the airflow into pressure energy, and finally it is stably discharged from the air outlet, realizing the large volume and high efficiency of airflow delivery. Attached Figure Description

[0009] Figure 1 This is a perspective view of the present utility model;

[0010] Figure 2 This is a perspective view of the present utility model;

[0011] Figure 3 This is a cross-sectional view of the present invention.

[0012] Reference numerals: Impeller body 10; Protrusion 11; Edge 12; Blade 13; Frame 14; Airflow channel 15; Bushing 16; Rotating shaft 17; Reinforcing rib 18. Detailed Implementation

[0013] like Figures 1 to 3 As shown, a forward impeller includes an impeller body 10, which has a protrusion 11 and an edge portion 12. The edge portion 12 is located at the edge of the protrusion 11 and has a plurality of protruding blades 13 arranged in a circular array on the outer periphery of the protrusion 11. The other end of each blade 13 is connected to a frame 14. The gap between the blades 13 and the protrusion 11 forms an airflow channel 15. A bushing 16 is provided in the center of the protrusion 11, and a rotating shaft 17 is provided in the bushing 16.

[0014] When in use, the rotating shaft 17 is connected to the motor and drives the impeller body 10 to rotate at high speed. When the impeller body 10 rotates, a negative pressure zone (lower than the outside atmospheric pressure) is formed between its blades. Under the action of the pressure difference, the outside air is drawn into the airflow channel 15 from the air inlet of the impeller body 10.

[0015] The high-speed rotating impeller body 10 applies centrifugal force and thrust to the intake air through the blades, converting mechanical energy into the kinetic and potential energy of the air. The centrifugal force causes the airflow to move outward along the radial direction of the blades, while the speed and pressure increase simultaneously.

[0016] The airflow, accelerated by the impeller body 10, enters the turbine casing. The cross-sectional area of ​​the casing gradually expands, further converting the kinetic energy of the airflow into pressure energy, and finally it is stably discharged from the outlet, achieving high-volume and high-efficiency airflow delivery.

[0017] The blade 13 is designed with an arc shape. The arc shape can guide the airflow to flow more smoothly from the center of the impeller to the edge, reduce airflow turbulence and friction, and reduce aerodynamic noise.

[0018] A reinforcing rib 18 is provided between the bottom wall and the side wall of the protrusion 11, which can make the overall structure of the impeller more stable.

Claims

1. A forward-rotating impeller, characterized in that, The impeller body (10) includes a protrusion (11) and an edge (12). The edge (12) is located on the edge of the protrusion (11) and has a plurality of protruding blades (13). The blades (13) are arranged in a circular array on the outer periphery of the protrusion (11). The other end of each blade (13) is connected to a frame (14). The gap between the blades (13) and the protrusion (11) forms an airflow channel (15). A bushing (16) is provided in the center of the protrusion (11), and a rotating shaft (17) is provided in the bushing (16).

2. The forward impeller according to claim 1, characterized in that, The blade (13) is designed with an arc shape.

3. The forward-rotating impeller according to claim 1, characterized in that, The bottom wall and side wall of the protrusion (11) are provided with reinforcing ribs (18).

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