Air blower

A blower and casing technology, applied in the field of blowers, can solve the problems of inconvenient disassembly and installation, reduced product service life, low concentricity, etc., and achieves the effects of smooth operation, protection of wires, and reduction of installation difficulty.

Active Publication Date: 2014-01-01
NINGBO HUJIANG ELECTRIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The blower motor mentioned above is external, and the shaft is connected to the impeller. There is an error in the connection between the shaft and the impeller, resulting in a deviation between the axis of the motor and the axis of the impeller. The concentricity is not high, and the impeller will move greatly, resulting in large The noise reduces the service life of the product, and the multi-blade fan is fixed on the motor shaft, which is very inconvenient to disassemble and install

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0048] According to the composition and mass percentage of the impeller, the ingredients are smelted at 1430°C by using the common smelting method in the prior art. The composition and mass percentage of the impeller are: carbon (C): 0.20%, silicon (Si): 0.25 %, nitrogen (N): 0.03%, manganese (Mn): 0.45%, titanium (Ti): 0.008%, aluminum (Al): 0.01%, phosphorus (P): 0.02%, sulfur (S): 0.01%, The balance is iron (Fe) and unavoidable impurities.

[0049] Preheat the template, cavity and core of the mold to 180°C, apply mold release agent after heating, then fix the cavity on the lower template, load the core, cover the upper template, and fix the pouring sleeve , pour the above smelted alloy into the mold at a casting temperature of 440°C, open the mold after hardening and take out the semi-finished product, quench the casting at 170°C and place it at room temperature for 46 hours; The mold is used for secondary casting, and the mold does not need to be reheated to obtain the fi...

Embodiment 2

[0051] According to the composition and mass percentage of the impeller, the ingredients are smelted at 1420°C by using the common smelting method in the prior art. The composition and mass percentage of the impeller are: carbon (C): 0.16%, silicon (Si): 0.15 %, nitrogen (N): 0.01%, manganese (Mn): 0.33%, titanium (Ti): 0.005%, aluminum (Al): 0.007%, phosphorus (P): 0.015%, sulfur (S): 0.002%, The balance is iron (Fe) and unavoidable impurities.

[0052] Preheat the template, cavity, and core of the mold to 190°C, apply a release agent after heating, then fix the cavity on the lower template, load the core, cover the upper template, and fix the pouring sleeve , pour the above smelted alloy into the mold at a casting temperature of 450°C. After hardening, the mold is opened to take out the semi-finished product. The casting is quenched at 180°C and placed at room temperature for 48 hours; The mold is used for secondary casting, and the mold does not need to be reheated to obta...

Embodiment 3

[0054] According to the composition and mass percentage of the impeller, the ingredients are smelted at 1450°C by using the common smelting method in the prior art. The composition and mass percentage of the impeller are: carbon (C): 0.22%, silicon (Si): 0.35 %, nitrogen (N): 0.05%, manganese (Mn): 0.63%, titanium (Ti): 0.010%, aluminum (Al): 0.015%, phosphorus (P): 0.03%, sulfur (S): 0.015%, The balance is iron (Fe) and unavoidable impurities.

[0055] Preheat the template, cavity, and core of the mold to 200°C, apply mold release agent after heating, then fix the cavity on the lower template, load the core, cover the upper template, and fix the pouring sleeve , pour the above smelted alloy into the mold at a casting temperature of 460°C, open the mold to take out the semi-finished product after hardening, and place the casting at room temperature for 50 hours after quenching at 190°C; The mold is used for secondary casting, and the mold does not need to be reheated to obtai...

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Abstract

The invention provides an air blower, belonging to the technical field of air blowers and solving the problems of low concentricity rate, high noise and inconvenience in mounting of existing air blowers. The air blower comprises a shell, motor mounting seats, impellers and a motor, wherein the motor mounting seats, the impellers and the motor are arranged in the shell, the impellers are mounted on the motor mounting seats, the motor is mounted in the motor mounting seats and can drive the impellers to rotate, and a support shaft penetrates through the motor and is bridged on the shell; the impellers comprise inner steel rings and outer steel rings, two sides of the inner steel rings are uniformly wound with fan blades, one ends of the fan blades are fixedly connected with the inner steel rings, the other ends of the fan blades are fixedly connected with the outer steel rings, the inner steel rings are provided with motor grooves, the motor mounting seats are arranged in the motor grooves, and the center of the motor coincides with the centers of the impellers. The air blower has the advantages of small movement, high concentricity rate, convenience in machining and simplicity in detaching.

Description

technical field [0001] The invention belongs to the technical field of air blowers and relates to an air blower. Background technique [0002] The existing blower uses a motor to drive the impeller to rotate at a high speed through the shaft. The air flow enters the high-speed rotating impeller axially from the inlet and then becomes a radial flow to be accelerated, and then enters the diffuser chamber to change the flow direction and decelerate. The kinetic energy in the rotating air flow is converted into pressure energy (potential energy), so that the outlet of the fan maintains a stable pressure. [0003] Patent 200310118403 discloses a blower, which includes a fan motor, two multi-blade fans fixed on the two shafts of the fan motor, and a turbine cover respectively covering the two multi-blade fans. The fan motor is mounted on a partition inside the machine body. The multi-blade fan is rotated by the operation of the fan motor, and the air sucked in from the suction p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D29/28F04D29/30C22C38/14C22C38/50
Inventor 陈洪飞杨源欣
Owner NINGBO HUJIANG ELECTRIC MOTOR
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