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Centrifugal fan with multiple groups of fan blades

A centrifugal fan and centrifugal technology, applied in the direction of mechanical equipment, non-variable pumps, machines/engines, etc., can solve the problems of affecting the exhaust work effect, high wind pressure, low wind pressure, etc., and achieve simple structure, The effect of high wind pressure and strong practicability

Inactive Publication Date: 2016-10-05
程相杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the fan structures in the market are different. Under the same specification and the same speed, the axial flow fan needs a large air flow, but the wind pressure is small; the centrifugal fan needs a small air flow, but the wind pressure is high; at the same time, the air flow is large and the wind pressure is high. The high-pressure fan is blank in the market
[0003] The invention of my "turbine high-pressure fan" has been applied for a national patent. "Turbine high-pressure fan" has shortcomings in production. The combined work of the blades, because the diameter of the axial flow fan blade and the centrifugal fan blade is the same, which affects the overall working effect of the exhaust, so it is necessary to further improve the casing

Method used

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  • Centrifugal fan with multiple groups of fan blades
  • Centrifugal fan with multiple groups of fan blades
  • Centrifugal fan with multiple groups of fan blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 Shown: the centrifugal fan with multiple sets of fan blades is composed of a motor (1), a fan assembly (5), a connector (3), and a metal frame (16).

[0026] The motor (1) is an electric motor.

[0027] Described connector (3) is shaft coupling.

[0028] The motor (1), the connector (3) and the fan assembly (5) are supported and fixed by the metal frame (16), the motor shaft (11) of the motor (1) and the blade shaft (12) of the fan assembly (5) Connected as a whole by the connector (3), the power of the motor (1) is transmitted to the blade shaft (12) of the fan assembly (5) through the motor shaft (11), and the blade shaft (12) drives the blade to start pumping air , Exhaust work.

[0029] Such as figure 2 Shown: The fan assembly (5) consists of a casing (8), fan shaft (12), axial flow fan blade (9), centrifugal impeller (10), bracket (2), and bearing (4) .

[0030] The cross-section of described casing (8) is circular, and its sectional view is...

Embodiment 2

[0039] refer to figure 1 , figure 2 , image 3 As shown, the motor (1) and fan assembly (5) of the centrifugal fan with multiple sets of fan blades shown in Embodiment 2 are the same as the combined structure described in Embodiment 1, and the similarities in this embodiment I won't repeat it.

[0040] A centrifugal fan with multiple sets of blades is composed of a motor (1), a fan assembly (5), and a connector (3); the motor (1) and the fan assembly (5) are supported and fixed by a metal frame (16).

[0041] Described connector (3) is pulley.

[0042] The motor (1) is an electric motor; the connector (3) fixedly installed on the motor shaft (11) of the motor is a belt pulley.

[0043] The connector (3) fixedly installed on the shaft head of the fan blade shaft (12) at the side of the casing (8) where the fan blade shaft (12) of the fan assembly (5) extends is a pulley.

[0044] The power of the motor (1) is transmitted from the pulley on the motor shaft (11) to the pull...

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Abstract

The centrifugal fan with multiple groups of fan blades of the present invention is composed of a motor, a fan assembly, a connector and a metal frame. The fan assembly is composed of a casing, a blade shaft, an axial flow blade, a centrifugal impeller, a bracket, and a bearing. The motor shaft of the motor and the blade shaft of the fan assembly are connected as a whole by a connector, and the motor and the fan assembly are supported and fixed by a metal frame. The casing is circular, and its cross-sectional view is T-shaped. The fan blade shaft is installed in the casing, and the multiple groups of fan blades on the fan blade shaft are composed of 1-17 groups of axial flow fan blades and 1 group of centrifugal impellers. When the fan blade shaft rotates, due to the centrifugal effect, the air between the two blades is quickly moved toward the outer edge, transferring energy, and the wind pressure is quickly superimposed to form a high pressure, and the speed of the wind force is increased. When the air is reintroduced into the next set of blades by the air duct, it will be accelerated again. Due to the energy transferred by multiple sets of blades, the wind pressure is quickly superimposed, forming a high pressure or high suction.

Description

technical field [0001] The invention relates to a fan, in particular to a centrifugal fan with multiple sets of fan blades. Background technique [0002] At present, the fan structures in the market are different. Under the same specification and the same speed, the axial flow fan needs a large air flow, but the wind pressure is small; the centrifugal fan needs a small air flow, but the wind pressure is high; at the same time, the air flow is large and the wind pressure is high. The high-pressure fan is blank in the market. [0003] The invention of my "turbine high-pressure fan" has been applied for a national patent. "Turbine high-pressure fan" has shortcomings in production. The combined work of the blades, because the diameter of the axial-flow fan blades and the centrifugal fan blades is the same, which affects the overall working effect of the exhaust, so it is necessary to further improve the casing. Contents of the invention [0004] The technical problem to be s...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D29/30F04D29/05F04D29/42
Inventor 程相杰
Owner 程相杰
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