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.
CN105257592AActive Publication Date: 2016-01-20NINGBO LANGDI IMPELLER MACHINERY
9 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NINGBO LANGDI IMPELLER MACHINERY
Publication Date
2016-01-20

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More