CN220151568U - Small-sized double-blade isolation type centrifugal fan - Google Patents
Small-sized double-blade isolation type centrifugal fan Download PDFInfo
- Publication number
- CN220151568U CN220151568U CN202321080697.9U CN202321080697U CN220151568U CN 220151568 U CN220151568 U CN 220151568U CN 202321080697 U CN202321080697 U CN 202321080697U CN 220151568 U CN220151568 U CN 220151568U
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- China
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- impeller
- support frame
- blade
- centrifugal fan
- silicon steel
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- 238000002955 isolation Methods 0.000 title claims abstract description 10
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000010030 laminating Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The utility model relates to a small double-blade isolation type centrifugal fan, which is characterized in that an upper impeller, magnetic steel and silicon steel sheets are sequentially sleeved and connected, the silicon steel sheets are sequentially attached to a circuit board and a support frame, the silicon steel sheets and the circuit board are respectively sleeved on the outer side of a sleeve of the support frame, the support frame and a lower impeller are sequentially arranged in a sleeved mode, the inner side of the sleeve of the support frame is sequentially sleeved and connected with an enameled wire and a shaft core rod, one end of the shaft core rod is sequentially provided with a bearing, a spring and a customized nut from inside to outside, and the other end of the shaft core rod is sequentially provided with a bearing, a gasket and a fixing nut from inside to outside. The utility model has small volume, light weight and compact structure.
Description
Technical Field
The utility model relates to the technical field of centrifugal fan equipment, in particular to a small double-blade isolation type centrifugal fan which is small in size, light in weight and compact in structure.
Background
The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc. The centrifugal fan is based on the principle of converting kinetic energy into potential energy, and utilizes an impeller rotating at high speed to accelerate gas, then decelerate and change flow direction, so that kinetic energy is converted into potential energy (pressure). In a single stage centrifugal fan, gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes flow direction and the increase in the cross-sectional area of the duct slows the gas flow, which slows down the kinetic energy into pressure energy. The pressure increase occurs mainly in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a reflux is used to force the air flow into the next impeller, creating a higher pressure. The working principle of the centrifugal fan is basically the same as that of the turbine compressor, and the gas is treated as incompressible fluid because the gas flow rate is low and the pressure change is small, so that the change of the specific volume of the gas is generally not needed to be considered.
The centrifugal fan can be made into a right-handed type and a left-handed type. The impeller rotates clockwise from the front view of one side of the motor and is called a right rotary fan; the impeller rotates counterclockwise, known as a left-hand rotary blower. The centrifugal fan consists of a casing, a main shaft, an impeller, a bearing transmission mechanism, a motor and the like. The shell is made of steel plates, is firm and reliable, can be divided into an integral type and a semi-open type, and is convenient to overhaul. The impeller consists of blades, a curved front disc and a flat rear disc. The rotor should be subjected to static balance and dynamic balance, so that stable rotation and good performance are ensured. The transmission part consists of a main shaft, a bearing box, a rolling bearing and a belt pulley (or a coupling).
In the prior art, centrifugal fans are numerous in variety, and for small-sized special occasions, the weight of the centrifugal fans is required to be below 0.5kg, and meanwhile, the centrifugal fans are compact in structure and excellent in performance. A small-sized double-blade isolation type centrifugal fan with small volume, light weight and compact structure is needed.
Disclosure of Invention
The utility model aims to provide a small double-blade isolation type centrifugal fan which is small in size, light in weight and compact in structure.
A miniature double-blade isolated centrifugal fan comprising:
go up the impeller, go up impeller, magnet steel, blade of silicon steel and overlap in proper order and connect, blade of silicon steel laminates circuit board, support frame in proper order, blade of silicon steel, circuit board overlap the sleeve pipe outside at the support frame respectively, support frame and lower impeller laminating set up, the sleeve pipe inboard of support frame overlaps in proper order and connects enameled wire, axle center pole, the one end of axle center pole sets gradually bearing, spring, customization nut from inside to outside, the other end of axle center pole sets gradually bearing, gasket, fixation nut from inside to outside.
The upper impeller is characterized in that arc-shaped blades are uniformly arranged on one outward side of the upper impeller, arc-shaped blades are uniformly arranged on one outward side of the lower impeller, the upper impeller is of a frustum shape, and the lower impeller is of a cylinder shape.
The middle part of the axle center rod is provided with a boss, and the length of one end of the lower impeller is longer than that of one end of the upper impeller.
The magnetic steel is a circular ring, the outer side of the magnetic steel is tightly attached to the inner wall of the impeller, and the inner side of the magnetic steel is tightly attached to the outer wall of the silicon steel sheet.
The circuit board is circular and is clamped in the annular groove of the support frame.
The lower impeller is provided with an annular inner groove at one side close to the support frame, and a central sleeve is arranged at the center of the annular inner groove.
According to the utility model, the upper impeller, the magnetic steel and the silicon steel sheets are sequentially sleeved and connected, the silicon steel sheets are sequentially attached to the circuit board and the support frame, the silicon steel sheets and the circuit board are respectively sleeved on the outer side of a sleeve of the support frame, the support frame and the lower impeller are sequentially attached, the inner side of the sleeve of the support frame is sequentially sleeved and connected with an enameled wire and a shaft core rod, one end of the shaft core rod is sequentially provided with a bearing, a spring and a customized nut from inside to outside, and the other end of the shaft core rod is sequentially provided with a bearing, a gasket and a fixing nut from inside to outside. The utility model has small volume, light weight and compact structure.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a perspective view of the present utility model;
FIG. 3 is a side view of the present utility model;
in the figure: 1. the device comprises a customized nut, 2, an upper impeller, 3, magnetic steel, 4, a silicon steel sheet, 5, enameled wires, 6, a shaft core rod, 7, a spring, 8, a bearing, 9, a circuit board, 10, a bracket frame, 11, a gasket, 12, a fixed nut, 13 and a lower impeller.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples.
A miniature double-blade isolated centrifugal fan, comprising: the upper impeller 2, the magnetic steel 3 and the silicon steel sheet 4 are sequentially connected in a sleeved mode, the silicon steel sheet 4 is sequentially attached to the circuit board 9 and the support frame 10, the silicon steel sheet 4 and the circuit board 9 are respectively sleeved on the outer side of a sleeve of the support frame 10, the support frame 10 is attached to the lower impeller 13, the inner side of the sleeve of the support frame 10 is sequentially sleeved with the enameled wire 5 and the shaft center rod 6, one end of the shaft center rod 6 is sequentially provided with the bearing 8, the spring 7 and the customized nut 1 from inside to outside, and the other end of the shaft center rod 6 is sequentially provided with the bearing 8, the gasket 11 and the fixing nut 12 from inside to outside.
The outward side of the upper impeller 2 is uniformly provided with arc-shaped blades, the outward side of the lower impeller 13 is uniformly provided with arc-shaped blades, the upper impeller 2 is in a frustum shape, and the lower impeller 13 is in a cylinder shape. The middle part of the shaft core rod 6 is provided with a boss, and the length of one end provided with the lower impeller 13 is longer than that of one end provided with the upper impeller 2. The magnetic steel 3 is a circular ring, the outer side is tightly attached to the inner wall of the impeller 2, and the inner side is tightly attached to the outer wall of the silicon steel sheet 4. The circuit board 9 is circular and is clamped in an annular groove of the bracket frame 10. The lower impeller 13 is provided with an annular inner groove at one side close to the support frame 10, and a central sleeve is arranged at the center of the annular inner groove.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A miniature double-blade isolated centrifugal fan, comprising:
go up impeller (2), magnet steel (3), blade of silicon steel (4) and overlap in proper order and connect, blade of silicon steel (4) laminating circuit board (9) in proper order, support frame (10), blade of silicon steel (4), circuit board (9) overlap respectively in the sleeve pipe outside of support frame (10), support frame (10) and lower impeller (13) laminating set up, the sleeve pipe inboard of support frame (10) overlaps in proper order and connects enameled wire (5), axle center pole (6), the one end of axle center pole (6) sets gradually bearing (8), spring (7), customization nut (1) from inside to outside, the other end of axle center pole (6) sets gradually bearing (8), gasket (11), fixation nut (12) from inside to outside.
2. The small double-blade isolation type centrifugal fan according to claim 1, wherein arc-shaped blades are uniformly arranged on one outward side of the upper impeller (2), arc-shaped blades are uniformly arranged on one outward side of the lower impeller (13), the upper impeller (2) is in a frustum shape, and the lower impeller (13) is in a cylindrical shape.
3. The small double-blade isolation type centrifugal fan according to claim 1, wherein a boss is arranged in the middle of the shaft (6), and the length of one end of the lower impeller (13) is longer than that of one end of the upper impeller (2).
4. The small double-blade isolation type centrifugal fan according to claim 1, wherein the magnetic steel (3) is a circular ring, the outer side is tightly attached to the inner wall of the impeller (2), and the inner side is tightly attached to the outer wall of the silicon steel sheet (4).
5. The miniature double-blade isolation type centrifugal fan according to claim 1, wherein the circuit board (9) is in a circular ring shape and is clamped in an annular groove of the support frame (10).
6. A miniature double-blade isolated centrifugal fan according to claim 1, wherein the lower impeller (13) is provided with an annular inner groove at one side close to the support frame (10), and a central sleeve is arranged at the center of the annular inner groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321080697.9U CN220151568U (en) | 2023-05-08 | 2023-05-08 | Small-sized double-blade isolation type centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321080697.9U CN220151568U (en) | 2023-05-08 | 2023-05-08 | Small-sized double-blade isolation type centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220151568U true CN220151568U (en) | 2023-12-08 |
Family
ID=89020477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321080697.9U Active CN220151568U (en) | 2023-05-08 | 2023-05-08 | Small-sized double-blade isolation type centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220151568U (en) |
-
2023
- 2023-05-08 CN CN202321080697.9U patent/CN220151568U/en active Active
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