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Axial flow type jet fan

A technology of jet flow fan and axial flow fan, applied in axial flow pumps, mechanical equipment, non-variable pumps, etc., can solve the problems of unsatisfactory fire extinguishing effect and low working efficiency of fire extinguishing fans, and achieve light weight, simple structure, The effect of high work efficiency

Inactive Publication Date: 2020-09-11
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the portable jet fan urgently needs to solve the problem of low working efficiency and unsatisfactory fire extinguishing effect of the fire extinguishing fan. Consider using the axial flow fire extinguishing impeller to further optimize the fire extinguishing performance of the portable jet fan

Method used

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  • Axial flow type jet fan
  • Axial flow type jet fan
  • Axial flow type jet fan

Examples

Experimental program
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Effect test

Embodiment

[0033] combine Figure 1-Figure 5 As shown, this embodiment provides an axial flow jet fan, including a small power source, a casing 5, a conical fan cylinder 6, a gear box, and a two-stage axial flow fan assembly 100;

[0034] The small-sized power source is arranged on the outside of the casing 5, the gear box is installed at the air inlet of the casing 5, and the input shaft of the gear box is connected to the small-sized power source through transmission;

[0035] The conical air cylinder 6 is installed at the air outlet of the housing 5, and the conical air cylinder 6 is provided with a diversion cone, and the diversion cone and the two-stage axial flow fan assembly 100 connect;

[0036] The two-stage axial flow fan assembly is arranged inside the casing 5, and the two-stage axial flow fan assembly includes an inlet rectifying grid 8 and a first moving impeller 9 sequentially installed on the output shaft of the gear box. , the first guide vane 10 , the second moving im...

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Abstract

The invention provides an axial flow type jet fan. The axial flow type jet fan comprises a small power source, a shell, a conical air duct, a gear box and a two-stage axial flow fan assembly; the small power source is arranged on the outer part of the shell, the gear box is installed at an air inlet of the shell, an input shaft of the gear box is in transmission connection with the small power source; the conical air duct is installed at the air outlet of the shell, a flow guide cone is arranged in the conical air duct and connected with the two-stage axial flow fan assembly; and the two-stageaxial flow fan assembly is arranged in the inner part of the shell and comprises an inlet rectification grid, a first movable impeller, a first guide vane, a second movable impeller, a second guide vane and an outlet rectification grid, and the inlet rectification grid, the first movable impeller, the first guide vane, the second movable impeller, the second guide vane and the outlet rectification grid are sequentially installed on an output shaft of the gear box. The axial flow type jet fan is simple in structure, light in weight, convenient to use, high in fire extinguishing air speed, large in air volume, high in wind power and good in fire extinguishing effect.

Description

technical field [0001] The invention relates to the technical field of jet fans, in particular to an axial flow jet fan. Background technique [0002] At present, most of the existing portable jet fans use centrifugal fans. The working principle of the centrifugal fan is to use the centrifugal force to increase the pressure and speed of the air. When the impeller rotates at high speed, the air entering the impeller is pushed to the outer edge of the impeller under the action of centrifugal force. The high-speed flowing air is compressed and concentrated in the volute casing, and then passes through the volute whose cross section gradually expands. Shell-type casing, the speed gradually decreases, and part of the kinetic energy is converted into pressure energy, which further increases the pressure of the air, and finally is pressed out from the casing outlet. [0003] In the axial flow fan, the gas enters and exits along the axial direction, without centrifugal inertial fo...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D25/02F04D19/02F04D29/00F04D29/32F04D29/52F04D29/54F04D29/64F04D29/70
CPCF04D19/007F04D25/02F04D25/08F04D29/002F04D29/325F04D29/522F04D29/542F04D29/646F04D29/703
Inventor 朱兴业姜晨龙
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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