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Jet fan impeller hub

A technology of jet fan and hub, applied in mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problems of large centrifugal force, high cost, waste of raw materials, etc., to improve the ability to transmit torque and increase the allowable compressive stress , the effect of reducing the moment of inertia

Active Publication Date: 2017-10-20
天津中隧通风机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the blades can be clamped and positioned, due to unreasonable structural design, there are defects such as heavy weight, many processing procedures, waste of raw materials resulting in high cost, and large centrifugal force generated during rotation.

Method used

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see Figure 1-2 , including shaft sleeve 1, fixing bolt 2, hub and blade handle seat 5, also includes blade handle 10 and blade to be installed, the hub core is provided with iron core 9, and the hub is composed of left-right symmetrical hub A 3 and Hub B 4 consists of hub A 3 and hub B 4. Blade shank 5 is provided inside. Said blade shank 5 includes an upper shank and a lower shank, and said lower shank is provided with a limit block 6 and a clip. The...

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Abstract

The invention discloses a jet fan impeller hub. The jet fan impeller hub comprises a shaft sleeve, fixing bolts and a hub; an iron core is arranged on the core of the hub, the hub is composed of hub bodies A and hub bodies B which achieve bilateral symmetry, blade shank bases are arranged in the hub bodies A and the hub bodies B, each blade shank base comprises an upper shank base and a lower shank base, a limiting block and a clamping base are arranged in each lower shank base, each limiting block is provided with a magnet block, and the blade shank bases, the limiting blocks, the clamping bases and the magnet blocks are symmetrically arranged and combined to form a cylindrical cavity. According to the jet fan impeller hub, the installing accuracy is guaranteed by adopting a double-faced clamping mode; a complete hub is obtained by adding a motor iron core, the rotational inertia of an impeller is decreased, the iron core is arranged on the core of the hub, the allowable compressive stress is increased, and the torque transmission capability is improved. The machining procedure of a draught fan is reduced on the premise that the draught fan running safety is guaranteed, and the improved draught fan is high in efficiency, low in noise, compact in structure and steady and reliable in running.

Description

technical field [0001] The invention relates to a jet fan impeller hub. Background technique [0002] Jet fan is a kind of axial fan. With the rapid development of my country's national economy and transportation industry, and the development of expressways in mountainous areas, tunnels and extra-long tunnels will inevitably appear in order to reduce the overall cost of high-speed operation. The pressure of transportation in big cities is becoming increasingly severe. In order to alleviate the pressure of ground transportation, subways, as a new and efficient mode of transportation, have appeared in major cities one after another. [0003] The ventilation of tunnels and subways is almost entirely completed by fans. Due to blockage and fire exhaust, the fans need to supply air in forward and reverse directions, and ensure that the air volume and wind pressure in forward and reverse directions are basically the same. Therefore, the ventilation system is equipped with a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/32F04D29/66
CPCF04D29/329F04D29/663F04D29/666
Inventor 毛建强
Owner 天津中隧通风机有限公司
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