CN216742161U - Multi-impeller centrifugal fan blade fixing plate - Google Patents
Multi-impeller centrifugal fan blade fixing plate Download PDFInfo
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- CN216742161U CN216742161U CN202122858431.XU CN202122858431U CN216742161U CN 216742161 U CN216742161 U CN 216742161U CN 202122858431 U CN202122858431 U CN 202122858431U CN 216742161 U CN216742161 U CN 216742161U
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Abstract
The utility model discloses a vane fixing plate of a multi-impeller centrifugal fan, which comprises a circular plate, vane fixing holes, a first circular groove, a first mounting hole and a second mounting hole, wherein the edge of the upper end surface of the circular plate is provided with a plurality of vane fixing holes, the upper end surface of the circular plate is provided with a coaxial first circular groove, the first circular groove is arranged at the inner side of the plurality of vane fixing holes, the upper end surface of the circular plate is provided with a plurality of first mounting holes, the plurality of first mounting holes are arranged at the inner side of the first circular groove, the upper end surface of the circular plate is provided with a coaxial second mounting hole, and the second mounting hole is arranged at the inner side of the plurality of first mounting holes. The utility model has the advantages of light weight, thinness and high strength, reduces the burden of the driving rotating shaft and reduces the cost of the centrifugal fan.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of a centrifugal fan blade fixing plate, in particular to the technical field of a multi-impeller centrifugal fan blade fixing plate.
[ background ] A method for producing a semiconductor device
The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion. Centrifugal fan relies on the rotation of drive pivot drive blade fixed plate and then the operation of indirect drive blade in the operation process, therefore the blade fixed plate can bear great pressure at the operation in-process, conventional blade fixed plate is flat, in order to ensure the intensity of blade fixed plate, people prevent blade fixed plate deformation through the mode of thickening blade fixed plate often, but this kind of mode not only can increase centrifugal fan's impeller weight, increase the burden of drive pivot, centrifugal fan's cost also can be improved simultaneously.
[ Utility model ] A method for manufacturing a semiconductor device
The utility model aims to solve the problems in the prior art, and provides a blade fixing plate of a multi-impeller centrifugal fan, which has the advantages of lightness, thinness and high strength, reduces the burden of a driving rotating shaft, and reduces the cost of the centrifugal fan.
In order to achieve the purpose, the utility model provides a vane fixing plate of a multi-impeller centrifugal fan, which comprises a circular plate, vane fixing holes, a first circular groove, a first mounting hole and a second mounting hole, wherein the edge of the upper end face of the circular plate is provided with a plurality of vane fixing holes, the upper end face of the circular plate is provided with the coaxial first circular groove, the first circular groove is arranged inside the plurality of vane fixing holes, the upper end face of the circular plate is provided with a plurality of first mounting holes, the plurality of first mounting holes are arranged inside the first circular groove, the upper end face of the circular plate is provided with the coaxial second mounting hole, and the second mounting hole is arranged inside the plurality of first mounting holes.
Preferably, the blade fixing holes are uniformly distributed in a circumferential array by taking the circle center of the circular plate as the circle center, and each blade fixing hole consists of three long round holes which are upwards protruded and distributed in a circular arc shape, and the circular arcs incline towards the lower right.
Preferably, the first mounting holes are uniformly distributed in a circumferential array by taking the circle center of the circular plate as the circle center.
Preferably, the first circular groove is formed by a circular plate which is sunken downwards, the groove bottom of the first circular groove and the upper end face of the circular plate are in inclined transition, and the radial length of the notch of the first circular groove is between one third and one half of the radius of the circular plate.
Preferably, a coaxial second circular groove is formed in the lower end face of the circular plate, the second circular groove is formed by upward protruding of the circular plate, and the second circular groove is formed in the connecting edge between the outer edge of the first circular groove and the upper end face of the circular plate.
The utility model has the beneficial effects that: the utility model has the advantages of lightness, thinness and high strength, reduces the burden of the driving rotating shaft and reduces the cost of the centrifugal fan; the blade fixing holes are formed by three long circular holes which are distributed in a convex arc shape upwards and incline towards the lower right, and the blades are fixed by the three long circular holes in a triangular direction, so that the blades can be firmly fixed due to the stability of the triangle; the circular ring grooves and the second circular ring groove structures with opposite sinking directions enable the circular plate not to deform easily in the radial direction, the strength of the circular plate is increased, the circular plate can bear the pressure caused by the operation of the blades even if the thickness of the circular plate is not increased, the burden of a driving rotating shaft is reduced, and the cost of the centrifugal fan is reduced.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a top view of a multiple impeller centrifugal fan blade retention plate of the present invention;
FIG. 2 is a front sectional view of a vane fixing plate of a multiblade centrifugal fan according to the present invention.
[ detailed description ] embodiments
Referring to fig. 1 and 2, the multi-impeller centrifugal fan blade fixing plate of the present invention comprises a circular plate 4, blade fixing holes 11, a first circular groove 12, a first mounting hole 13, and a second mounting hole 14, wherein the edge of the upper end surface of the circular plate 4 is provided with a plurality of blade fixing holes 11, the upper end surface of the circular plate 4 is provided with the coaxial first circular groove 12, the first circular groove 12 is arranged inside the plurality of blade fixing holes 11, the upper end surface of the circular plate 4 is provided with a plurality of first mounting holes 13, the plurality of first mounting holes 13 are arranged inside the first circular groove 12, the upper end surface of the circular plate 4 is provided with the coaxial second mounting hole 14, the second mounting holes 14 are arranged inside the plurality of first mounting holes 13, the plurality of blade fixing holes 11 are uniformly distributed in a circumferential array with the circle center of the circular plate 4 as the circle center, the blade fixing holes 11 are composed of three oblong holes 1101, three oblong holes 1101 are distributed in an upward protruding arc shape and the arc shape is inclined to the lower right, the first mounting hole 13 of a plurality of uses the centre of a circle of plectane 4 to be the centre of a circle and is circumference array evenly distributed, first ring groove 12 is formed by plectane 4 undercut, and the inclined plane transition between the tank bottom of first ring groove 12 and the plectane 4 up end, the radial length of first ring groove 12 notch is between the radial third of plectane 4 and half, the terminal surface is equipped with coaxial second ring groove 1201 under the plectane 4, and second ring groove 1201 is formed by plectane 4 upwards protrusion, and second ring groove 1201 establishes in the edge of being connected of first ring groove 12 outside edge and plectane 4 up end.
The working process of the utility model is as follows:
in the working process of the blade fixing plate of the multi-impeller centrifugal fan, the blades are fixed in the blade fixing holes 11 from the lower part of the circular plate 4, and the coaxial driving rotating shaft is arranged in the second mounting hole 14.
The centrifugal fan has the advantages of light weight, thinness and high strength, reduces the burden of driving the rotating shaft, and reduces the cost of the centrifugal fan; the blade fixing hole 11 is composed of three long circular holes 1101, the three long circular holes 1101 are distributed in an upward convex arc shape, the arc is inclined towards the lower right, the three long circular holes 1101 are used for fixing the blade in a triangular direction, and the blade can be firmly fixed due to the stability of the triangle; the circular groove 12 and the second circular groove 1201 which are opposite in sinking direction make the circular plate 4 difficult to deform radially, so that the strength of the circular plate 4 is increased, the circular plate 4 can bear the pressure caused by the operation of the blades even if the thickness of the circular plate 4 is not increased, the load of driving the rotating shaft is reduced, and the cost of the centrifugal fan is reduced.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a multiple impeller centrifugal fan blade fixed plate which characterized in that: including plectane (4), blade fixed orifices (11), first ring groove (12), first mounting hole (13), second mounting hole (14), plectane (4) up end edge is equipped with a plurality of blade fixed orifices (11), and plectane (4) up end is equipped with coaxial first ring groove (12), and first ring groove (12) are established at a plurality of blade fixed orifices (11) inboardly, and plectane (4) up end is equipped with the first mounting hole of a plurality of (13), and establish in first ring groove (12) inboard a plurality of first mounting hole (13), and plectane (4) up end is equipped with coaxial second mounting hole (14), and establish in the first mounting hole of a plurality of (13) inboard second mounting hole (14).
2. A multiple impeller centrifugal fan vane retainer plate according to claim 1, wherein: the blade fixing holes (11) are uniformly distributed in a circumferential array by taking the circle center of the circular plate (4) as the circle center, the blade fixing holes (11) are formed by three long circular holes (1101), the three long circular holes (1101) are upwards projected and distributed in a circular arc shape, and the circular arc inclines towards the lower right.
3. A multiple impeller centrifugal fan vane retainer plate according to claim 1, wherein: the first mounting holes (13) are uniformly distributed in a circumferential array by taking the circle center of the circular plate (4) as the circle center.
4. A multiple impeller centrifugal fan vane retainer plate according to claim 1, wherein: the first circular ring groove (12) is formed by downward sinking of a circular plate (4), the groove bottom of the first circular ring groove (12) and the upper end face of the circular plate (4) are in inclined surface transition, and the radial length of the notch of the first circular ring groove (12) is between one third and one half of the radius of the circular plate (4).
5. A multiple impeller centrifugal fan vane retainer plate according to claim 1, wherein: the lower end face of the circular plate (4) is provided with a coaxial second circular ring groove (1201), the second circular ring groove (1201) is formed by upward protruding of the circular plate (4), and the second circular ring groove (1201) is arranged at the connecting edge of the outer edge of the first circular ring groove (12) and the upper end face of the circular plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858431.XU CN216742161U (en) | 2021-11-22 | 2021-11-22 | Multi-impeller centrifugal fan blade fixing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858431.XU CN216742161U (en) | 2021-11-22 | 2021-11-22 | Multi-impeller centrifugal fan blade fixing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742161U true CN216742161U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122858431.XU Active CN216742161U (en) | 2021-11-22 | 2021-11-22 | Multi-impeller centrifugal fan blade fixing plate |
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| Country | Link |
|---|---|
| CN (1) | CN216742161U (en) |
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2021
- 2021-11-22 CN CN202122858431.XU patent/CN216742161U/en active Active
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