Less-channel diffuser
A diffuser and channel technology, applied in the field of centrifugal blower components, can solve the problems of large friction loss, reduced efficiency, long flow path, etc.
Inactive Publication Date: 2012-09-05
NANTONG DART POLLRICH FAN
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage of the vaneless diffuser is that the flow path is long and the friction loss is large; and under the design condition, its efficiency is lower than that of the vane diffuser
The disadvantage of the blade diffuser is that the impact loss is large when the working condition changes, and the efficiency drops significantly.
Although the performance of the straight wall diffuser is better than that of vaneless and vane diffuser, it is not obvious
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0014] A diffusor with few passages, comprising a wheel disc 1, a shaft hole 2 is arranged in the middle of the disc 1, two sides of the disc 1 are respectively an air inlet surface and an air outlet surface, and guide vanes are welded on the air inlet surface a3 and guide vane b4, guide vane a3 is straight and long with a slightly curved root, guide vane b4 is hook-shaped, guide vane a3 and guide vane b4 have their roots welded together, and the tip of guide vane a3 The part is welded to the middle position of the guide vane b4. The whole composed of the guide vane a3 and the guide vane b4 is a composite blade a5. The composite blade a5 is inclined to the wheel 1 and the radius is evenly distributed on the edge of the wheel 1, so that the composite blade a5 is An inflow channel 6 is formed between the inflow channel 6 and the outlet of the inflow channel 6 is provided with a deflector a7 and a deflector b8. The air outlet surface is welded with a deflector blade c9 and a deflec...
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
Login to View More Abstract
The invention discloses a less-channel diffuser which is novel and is designed aiming at the defects of the existing three diffusers including a vaneless diffuser, a vane diffuser and a straight-wall-type diffuser and based on the advantages and disadvantages of the three diffusers. The diffuser comprises an air inlet surface and an air outlet surface, wherein the air inlet surface and the air outlet surface are provided with guide vanes of different shapes so as to form arc flow channels, and arc channels at two sides are communicated mutually through guide plants of different specifications; and the less-channel diffuser is uniform in air flow velocity and pressure distribution, and is less in flow loss; the efficiency under the design working condition is about 3-5% higher than that of a straight-wall-type diffuser, and the impact loss in variable working conditions is not greater than that of the straight-wall-type diffuser, and the surge of a whole air blower is hardly caused.
Description
Technical field [0001] The invention relates to a component of a centrifugal blower, in particular to a diffuser of the centrifugal blower. Background technique [0002] The diffuser of a centrifugal blower is generally divided into three types: vaneless diffuser, vane diffuser and straight wall diffuser. The disadvantage of a vaneless diffuser is that the flow path is long and the friction loss is large; and under design conditions, its efficiency is lower than that of a vane diffuser. The disadvantage of the vane diffuser is that the impact loss is large when the working conditions are changed, and the efficiency is obviously reduced. Although the performance of the straight-wall diffuser is somewhat improved compared with the vaneless and vane diffusers, it is not obvious. Summary of the invention [0003] Objective of the invention: The objective of the present invention is to solve the shortcomings of the prior art and provide a diffuser with fewer channels that can effecti...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44
Inventor 陈勇
Owner NANTONG DART POLLRICH FAN