CN202326408U - Efficient centrifugal ventilator blade structure - Google Patents

Abstract

The utility model relates to an efficient centrifugal ventilator blade structure and belongs to the technical filed of fans. The technical scheme is as follows: the structure comprises blades (1), a wheel disk (2), a wheel hub strengthening cone (3) and a wheel hub (4); the wheel hub (4) is arranged at the center of the wheel disk (2), the wheel hub strengthening cone (3) is arranged outside the wheel hub (4) and a plurality of blades (1) are arranged at the wheel disk (2) and the wheel hub strengthening cone (3); the sections of the blades (1) are of a single-plate structure in which an arc is connected with a straight line; the front part of the single-plate structure is the arc-shaped line and the rear part of the single-plate structure is the straight line; and the blades are backward blades. By virtue of proper dimensional combination of the arced part and straight line part of each blades of the utility model, the inlet installing angel and outlet installing angle of the blades reach more reasonable values and are in match with an arc-conical wheel cover and the wheel disk (2) with the wheel hub strengthening cone (3) (rectification) and sawtooth-shaped edge, loss of air current in a blade channel is less in the operating section of the fan, thereby enabling the fan to be more efficient. The blade structure has the characteristics of simple blade shape, easiness for processing and manufacturing, low production cost and the like.

Description

A high-efficiency centrifugal fan blade structure

technical field

The utility model relates to a high-efficiency centrifugal fan blade structure, which belongs to the technical field of fans.

Background technique

The impeller is the core component of the fan, and its structure, geometry, size, number of blades and manufacturing precision have a great influence on the performance of the fan. The blade is the main part of the impeller, and it is the most important thing related to the performance of the fan. The main parameters of fan performance are flow, pressure, efficiency, power, etc. The structure of the blade is a crucial factor for the high efficiency of the fan. The blade structure of the centrifugal fan in the background art is unreasonable, the efficiency is not ideal, the processing and manufacturing is difficult, and the cost is high.

Utility model content

The purpose of the utility model is to provide a high-efficiency centrifugal fan blade structure, which improves efficiency, is easy to process and manufacture, and has low cost, so as to solve the above-mentioned problems in the background technology.

The technical scheme of the utility model is:

A high-efficiency centrifugal fan blade structure, including blades, discs, hub reinforcement cones, and hubs. The hub is arranged in the center of the hub, and the hub is provided with hub reinforcement cones outside the hub. Several blades are arranged on the hub and hub reinforcement cones. Said blade cross-section is a single-plate structure connected by arc and straight line, the front part is arc-shaped line, and the rear part is straight-line-shaped line, which is the backward blade.

The wheel disc has a saw-tooth outer edge structure and is equipped with a wheel cover. The wheel cover is an arc-cone wheel cover. The blade is an integrally stamped blade. Disk connected.

The positive effect of the utility model is that the blades can reach reasonable values for the inlet and outlet installation angles of the blades through the appropriate combination of the size of the arc part and the straight part, and then cooperate with the arc-cone wheel cover and the wheel cover with the hub The reinforced cone (rectification) and the sawtooth-shaped outer edge of the wheel make the airflow in the blade channel less loss in the working range of the fan, so that the fan can obtain higher efficiency, and the high-efficiency area is relatively wide; the utility model has the advantages of The blade has the characteristics of simple form, easy processing and manufacturing, and low production cost.

Description of drawings

Fig. 1 is the expanded view of blade of the present utility model;

Fig. 2 is the plan view of blade structure of the present utility model;

Fig. 3 is the front view of the utility model embodiment;

Fig. 4 is a side view of the utility model embodiment;

Fig. 5 is a rotary sectional view of the utility model embodiment;

In the figure: blade 1, wheel disc 2, wheel hub reinforcing cone 3, wheel hub 4, wheel cover 5.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further by embodiment.

A high-efficiency centrifugal fan blade structure, including blade 1, wheel disc 2, hub reinforcing cone 3, and hub 4, the hub is set in the center of the wheel disc, the hub is equipped with a hub reinforcing cone, and several blades are set on the wheel disc and the hub On the reinforcing cone, the section of the blade is a single-plate structure connected by a circular arc and a straight line, the front part is an arc-shaped line, and the rear part is a straight line, which is a backward-facing blade. The wheel disc has a sawtooth outer edge structure and is provided with a wheel cover 5. The upper part of the blade is connected with the arc-cone wheel cover, and the lower part of the blade is connected with the hub reinforcement cone and the wheel disc.

The circular arc line part of the blade is welded on the hub reinforcement cone, and the straight line part of the blade is welded on the wheel disc. The whole blade is stamped and formed. The upper part of the blade is welded with the arc cone wheel cover.

Claims (2)

1. A high-efficiency centrifugal fan blade structure, which is characterized in that it includes blades (1), wheel discs (2), hub reinforcement cones (3), and hubs (4). The hub reinforcing cone, several blades are arranged on the wheel disc and the hub reinforcing cone, the blade section is a single-plate structure connected by a circular arc and a straight line, the front part is a circular arc line, and the rear part is a straight line, which is Backward blade. 2. A high-efficiency centrifugal fan blade structure according to claim 1, characterized in that the wheel disc is a sawtooth-shaped outer edge structure, and a wheel cover (5) is provided. The wheel cover is an arc-cone wheel cover, and the blades are The blade is integrally stamped and formed. The upper part of the blade is connected with the arc-cone wheel cover, and the lower part is connected with the hub reinforcing cone and the wheel disc.

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