A small centrifugal fan air inlet guide device
A technology of centrifugal fan and diversion device, which is applied to the components of pumping device for elastic fluid, mechanical equipment, machine/engine, etc., can solve the problems of troublesome installation, unstable gas at the air inlet, etc. The effect of reducing and eliminating fan vibration and increasing strength
Active Publication Date: 2015-11-11
宁风科技(宁波)有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The application for this invention has anti-wear ribs welded on the inner wall of the air duct to increase the strength of the air inlet of the fan. Although it can reduce the vibration of the fan to a certain extent, it does not fundamentally solve the problem of gas instability at the air inlet, and it also Trouble with installation
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 1
[0016] A small centrifugal fan air inlet guide device, comprising an air inlet 1, the air inlet 1 includes an opening section 11 whose cross-sectional area gradually decreases from the outside to the inside and an outlet section 12 whose cross-sectional area gradually expands from the outside to the inside, The outlet section 12 is provided with a deflector assembly fixed on the inner wall of the air inlet 1, the deflector assembly includes a support frame 2 and a deflector 3, and the deflector 3 is fixed on the support frame 2 , the support frame is fixed on the inner wall of the air inlet 1, and the deflector 3 divides the outlet section 12 into a peripheral air inlet area 4 adjacent to the inner wall of the outlet section 12 and a peripheral air inlet area 4 connected to the outlet section. 12 central air intake areas 5 separated by inner walls.
[0017] In this embodiment, the above-mentioned deflectors 3 are connected end to end to form a circular platform with open ends,...
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 an air inlet flow guide device for a small centrifugal fan. The air inlet flow guide device comprises an air inlet, wherein the air inlet comprises an opening section of which the section area is gradually reduced from outside to inside, and an outlet section of which the section area is gradually increased from outside to the inside; a flow guide subassembly fixed to the internal wall of the air inlet is arranged in the outlet section, and the flow guide subassembly comprises a supporting frame and a flow guide plate fixed onto the supporting frame; the supporting frame is fixed to the internal wall of the air inlet; and the outlet section is divided into a peripheral air inlet area adjoined to the internal wall of the outlet section, and a central air inlet area separated from the internal wall of the outlet section. Compared with the prior art, the air inlet flow guide device provided by the invention reduces the influence of the air that is collected from the periphery to the middle to the air flow in the middle, and meanwhile, as the directions of connected air flows of the air are in the same direction when flowing out from the peripheral air inlet area and the central air inlet area, little influence is generated to each other, and the air flows are kept in a stable state, and as a result, the problem that a fan is vibrated can be completely reduced and even eliminated.
Description
technical field [0001] The invention belongs to the technical field of fans, and in particular relates to a guide device for an air inlet of a small centrifugal fan. Background technique [0002] Centrifugal fans, as a kind of impeller machinery for conveying air, are widely used in aviation, coal, electric power, metallurgy, electronics, automobiles, air conditioning and other industrial production and daily life fields. [0003] The centrifugal fan is composed of an inlet and an outlet when it is working. The impeller rotates at a high speed in the casing, sucks in the gas from the inlet, and then sends the gas out through the outlet. The different installation methods of the tuyere pipes will cause the instability of the gas entering the fan. Due to the instability of the gas entering the fan, a series of fan operation problems will be caused, such as vibration, and the size of the outlet flow is different. The Chinese invention patent application No. 201010543295.9 disc...
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 Patents(China)
IPC IPC(8): F04D29/44
Inventor 赵国强
Owner 宁风科技(宁波)有限公司