Fan provided with bent blades

A blade and fan technology, applied in the field of automobile engine cooling, can solve the problems of increasing the idle power of blades, increasing the noise of the fan, and losing the effective air volume, and achieves the effect of reducing the loss of air volume, reducing noise, and improving aerodynamic performance.

Inactive Publication Date: 2020-11-17
DONGFENG BEHR THERMAL SYST
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the analysis of the existing linear blade CFD flow field, it is found that there is airflow disturbance at the edge of the blade. This phenomenon of airflow disturbance is caused by the high-pressure airflow near the edge of the blade. They cause the blade to lose a lot of effective air volume during operation, increasing the The useless work of the blades is reduced, and the turbulence increases the noise of the entire fan

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fan provided with bent blades
  • Fan provided with bent blades
  • Fan provided with bent blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 2-4 As shown, a blade-bending fan of the present invention includes a fan blade and an insert 1, the fan blade is a plastic part, and the insert 1 is a high-strength metal part. The fan blade is a rotating part and is used to dissipate heat to the engine system. The clutch assembly and insert 1 are connected by screws, and the flange shaft is connected to the engine to transmit the input torque of the engine.

[0021] The fan blade includes a hub and blades 2, and a plurality of blades 2 are uniformly arranged on the hub, and the roots of the plurality of blades 2 are all arranged on the hub. The end of each blade 2 is equally bent to the windward side of the fan at the bending transition line 23, and the blade 2 is divided into two parts at the bending transition line 23, which are respectively the bending part 21 at the e...

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

PUM

PropertyMeasurementUnit
Bend angleaaaaaaaaaa
Login to view more

Abstract

The invention relates to a fan provided with bent blades. The fan provided with the bent blades comprises fan blades and an insert; the fan blades include a hub and blade bodies; the insert is embedded in the hub; the multiple blade bodies are evenly arranged on the hub; the roots of the multiple blade bodies are all arranged on the hub; the tail end of each blade body is bent towards the windwardside of the fan in an equal-diameter manner to form a bent part and an original blade part, the relation between the length A of the bent part in the radial direction of the fan and the diameter B ofthe fan is that (B-2A) / B is larger than or equal to 0.8, and the bending radius R of the bent part is 8%-12% of the diameter B of the fan. The position, close to the tail end, of each blade body is bent, so that the aerodynamic performance of the edge of each blade body is effectively improved, the phenomena of airflow disturbance and front edge stalling of the edge of each blade body are reduced, the air volume loss is reduced, the blade efficiency is improved, and the power consumption is reduced; and meanwhile, airflow disturbance on the edges of the fan blades is reduced, so that noises are reduced.

Description

technical field [0001] The invention relates to the technical field of automobile engine cooling, in particular to a fan with bent blades. Background technique [0002] At present, the heat dissipation of the engine thermal system of commercial vehicles is completed by the silicone oil fan. Its working principle is: the engine torque is transmitted through the viscous force of the silicone oil, and the fan blades are driven to rotate to dissipate heat for the engine radiator and air conditioner condenser. According to the working mode, it is divided into Electric / temperature-controlled silicone oil fan. The power of silicone oil fans in commercial vehicles comes from the engine, which accounts for 5% to 10% of the fuel consumption of the vehicle. How to reduce the power consumption of silicone oil fans has become an important issue for silicone oil fan manufacturers. [0003] The structural design of the silicone oil fan blade will directly affect its power consumption and ...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F04D29/38F04D29/32F04D29/66
CPCF04D29/325F04D29/386F04D29/388F04D29/666
Inventor 夏哲浩江扬帆李东平权妮彭斯
Owner DONGFENG BEHR THERMAL SYST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap