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Injection molding centrifugal fan blade for air conditioner

A technology of centrifugal blades and injection molding, which is used in parts of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc.

Active Publication Date: 2016-01-20
NINGBO LANGDI IMPELLER MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects of the existing fan blades, and provide a novel structure, the chassis will not be deformed during injection molding, and the adjustment of the initial unbalance of the fan blades will not increase the product weight and cost, and the noise is low. Injection molded centrifugal fan blades on air conditioners

Method used

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  • Injection molding centrifugal fan blade for air conditioner

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Embodiment Construction

[0010] Attached below figure 1 A detailed description will be made to the specific embodiment of the present invention.

[0011] Such as figure 1 The shown injection-molded centrifugal fan blades for air conditioners include a chassis 1, a hub 3, a plurality of blades 2 and an outer ring 4, the outer side of the hub 3 is connected to the inner side of the chassis 1, and the bottom ends of all the blades 2 are connected to the chassis 1 Connected as a whole, the outer ring 4 is connected as a whole with the outer wall of the top of the blade 2 . The wheel hub 3 is provided with a plurality of material saving openings 31, which further reduces the weight of the product and the cost of production. The number of blades 2 is 43. The center of the centrifugal fan blade, that is, the center of the hub 3 is provided with a motor shaft hole.

[0012] The chassis 1 is provided with 10 material-saving holes 11, and at least two material-saving holes 11 have different areas. The dart...

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Abstract

The invention relates to the field of ventilation equipment, in particular to an injection molding centrifugal fan blade for an air conditioner. The injection molding centrifugal fan blade comprises a base plate, a hub, a plurality of blade bodies and an outer ring. The outer side of the hub and the inner side of the base plate are connected into a whole. The bottom ends of the blade bodies and the base plate are connected into a whole. The outer ring and the outer side walls of the tops of the blades are connected into a whole. The hub is provided with a plurality of material saving openings. The base plate is provided with 4-10 material saving holes. Not all the blade bodies have the same central angle. The air inlet end of each blade body is provided with a plurality of tooth-shaped notches. A plurality of bumps are arranged on the backpressure face of each blade body. The inner side end of the top of each blade is provided with an arc chamfer. The injection molding centrifugal fan blade for the air conditioner has the advantages that the structure is novel, and the base plate cannot deform during injection molding; the initial unbalance of the fan blade is adjusted, so that the product weight and cost are not increased, and noise is low.

Description

technical field [0001] The invention relates to the field of ventilation equipment, in particular to a centrifugal fan blade used in an air conditioner. Background technique [0002] Injection-molded centrifugal fan blade is a commonly used product in the field of ventilation equipment, especially in air conditioners. The fan blade includes a chassis, a hub and multiple blades. The outer side of the hub is connected to the inner side of the chassis, and the bottom of the blade is connected to the chassis. Centrifugal fan blades are injection molded parts. In order to reduce the weight of the product, multiple material-saving holes are generally opened on the hub. The disadvantages of the existing centrifugal fan blades are: (1) the chassis is deformed due to the large size during injection molding, and the production cost is also high; (2) in order to adjust the initial unbalance of the fan blades, it is necessary to increase the counterweight, which further increases the we...

Claims

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Application Information

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IPC IPC(8): F04D29/28F04D29/30F04D29/66
Inventor 周会中高文铭
Owner NINGBO LANGDI IMPELLER MACHINERY
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