CN216951000U - Booster, pressure boost radiator fan and dc-to-ac converter - Google Patents
Booster, pressure boost radiator fan and dc-to-ac converter Download PDFInfo
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- CN216951000U CN216951000U CN202220615434.2U CN202220615434U CN216951000U CN 216951000 U CN216951000 U CN 216951000U CN 202220615434 U CN202220615434 U CN 202220615434U CN 216951000 U CN216951000 U CN 216951000U
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- fan
- supercharger
- air flow
- flow channel
- outer shell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a supercharger, which is arranged in an air inlet path of a cooling fan and comprises: the outer shell and the reverse prerotation sheet; the outer shell is provided with an air flow channel and is used for being coaxially assembled with the heat dissipation fan; the reverse pre-rotation piece is fixed in the air flow channel, and the wind guide rotation direction of the reverse pre-rotation piece is opposite to the wind guide rotation direction of the heat dissipation fan. The air current of this scheme obtains a reverse rotation speed before getting into the movable vane to increase the pressure of fan, improve the radiating effect, can also reduce surge, have certain noise reduction. The utility model also discloses a supercharging and cooling fan and an inverter which apply the supercharger.
Description
Technical Field
The utility model relates to the technical field of fans, in particular to a supercharger, a supercharging cooling fan and an inverter.
Background
In recent years, photovoltaic inverters have higher and higher power, complicated internal structures and densely distributed electronic components, so that system impedance is higher, when the static pressure of a fan is insufficient, the fan easily enters a stall area, so that the flow is reduced, heat dissipation is insufficient, and meanwhile, the problems of surge, noise increase and the like are caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a pressure booster, which can increase the pressure of the fan and improve the heat dissipation effect.
The utility model provides a supercharging cooling fan and an inverter applying the supercharger.
In order to achieve the purpose, the utility model provides the following technical scheme:
a supercharger for placement in an air intake path of a radiator fan, comprising: the outer shell and the reverse prerotation sheet;
the outer shell is provided with an air flow channel and is used for being coaxially assembled with the heat dissipation fan;
the reverse pre-rotation piece is fixed in the air flow channel, and the wind guide rotation direction of the reverse pre-rotation piece is opposite to the wind guide rotation direction of the heat dissipation fan.
Preferably, the number of the anti-prerotation pieces is multiple, and the anti-prerotation pieces are uniformly distributed around the central axis of the air flow channel.
Preferably, the anti-prerotation piece has a circular arc-shaped cross section or an airfoil shape.
Preferably, the air flow passage is of a cylindrical structure.
Preferably, the outer casing is provided with a screw hole for connecting with the fan stator.
Preferably, the method further comprises the following steps: a rectification head cover;
the rectifying head cover is fixed at the axis position of the air flow channel, and a convergent channel with a distance from the air inlet side to the air outlet side being smaller and smaller is formed between the rectifying head cover and the inner wall of the air flow channel.
Preferably, the fairing head is conical or hemispherical.
Preferably, the outer shell, the anti-prerotation piece and the fairing cover are integrally formed by injection molding.
A booster radiator fan comprising: the fan comprises a fan body and the supercharger, wherein the supercharger is coaxially assembled in an air inlet path of the fan body.
Preferably, the method further comprises the following steps: support and spiro union piece, the fan body includes: a fan rotor and a fan stator;
the outer shell and the fan stator are mounted on the support through the screw connector.
An inverter, comprising: the forced induction cooling fan as described above.
According to the technical scheme, the supercharger provided by the utility model has the advantages that airflow obtains a reverse rotating speed before entering the movable blades, so that the pressure of the fan is increased, the heat dissipation effect is improved, the surge can be reduced, and a certain noise reduction effect is achieved. The utility model also provides a supercharging cooling fan and an inverter, and the supercharger has corresponding beneficial effects due to the adoption of the supercharger, and specific reference can be made to the foregoing description, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1-1 is an exploded view of a booster heat dissipation fan according to an embodiment of the present invention;
fig. 1-2 are schematic views illustrating an assembly structure of a booster radiator fan according to an embodiment of the present invention;
FIG. 2-1 is a schematic axial view of a supercharger according to an embodiment of the present invention;
2-2 are schematic cross-sectional structural views of a supercharger provided in an embodiment of the present invention;
FIG. 3-1 is a primitive stage velocity triangle at the bucket without a supercharger;
3-2 is a planar cascade view of a belt booster provided by an embodiment of the present invention;
3-3 are anti-pre-rotor velocity triangles provided in accordance with embodiments of the present invention;
fig. 3-4 are bucket velocity triangles provided by embodiments of the utility model.
Wherein, 1 is a screw, 2 is a nut, 3 is a fan protecting net, and 4 is a bracket;
5 is a supercharger, 5-1 is an outer shell, 5-2 is a reverse pre-spinning piece, and 5-3 is a rectifying head cover;
6 is a fan rotor, and 7 is a fan stator.
Detailed Description
The embodiment of the utility model provides a supercharger, wherein the pressure of a fan is increased and the heat dissipation effect is improved by arranging a supercharging device with anti-pre-rotation sheets in front of movable blades of the fan; the pre-rotation piece can be a circular arc or an airfoil shape; the outer shell and the rectifying head cover form a convergent channel which can accelerate incoming flow uniformly and avoid air flow separation; the device can reduce surging and has certain noise reduction effect.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The supercharger 5 provided by the embodiment of the present invention is configured to be disposed in an air intake path of a heat dissipation fan (including a fan rotor 6 and a fan stator 7), and includes: an outer shell 5-1 and a reverse pre-rotation sheet 5-2; the structure of the device can be shown by reference to fig. 1-1, fig. 1-2 and fig. 2-1;
wherein, the outer shell 5-1 is provided with an air flow channel, and the outer shell 5-1 is used for being coaxially assembled with the cooling fan;
the anti-prerotation blades 5-2 are fixed in the air flow passage, namely, are used as static blades, and the wind guiding rotation direction of the anti-prerotation blades 5-2 is opposite to the wind guiding rotation direction of the radiating fan (one is anticlockwise, and the other is clockwise).
It can be seen from the above technical solutions that, in the supercharger provided in the embodiments of the present invention, as shown in the air inlet direction shown by the arrow in fig. 1-1 and the assembly structure shown in fig. 1-2, the supercharger 5 is located on the air inlet side of the cooling fan, so that the airflow obtains a reverse rotation speed before entering the movable blades (i.e., the fan rotor 6), thereby increasing the pressure of the fan, improving the cooling effect, and also reducing surge, and having a certain noise reduction effect.
Preferably, the number of the anti-prerotation pieces 5-2 is multiple, and the anti-prerotation pieces are uniformly distributed around the central axis of the air flow channel. The structure of which can be seen in fig. 2-1 and 2-2 to provide an air flow corresponding to the form of the fan rotor 6 for a better supercharging effect.
Further, the section of the reverse prerotation sheet 5-2 is arc-shaped or wing-shaped, so that a good reverse rotation effect is obtained. Of course, the above form is only a preferred embodiment, and the form of the reverse pre-rotation plate 5-2 in the present solution is not limited thereto, and is not described herein again.
In this embodiment, the air flow channel is a cylindrical structure, and is matched with the form of the fan stator 7, so that a better air guiding effect can be achieved.
Specifically, the outer casing 5-1 is provided with a screw hole for connecting with the fan stator 7. The structure of the device can be shown in figures 1-1 and 1-2, the device is fixedly connected through screw connecting pieces (such as a screw 1 and a nut 2), and the device is simple in structure, firm and reliable.
The supercharger 5 provided in the embodiment of the present invention further includes: 5-3 of a rectification head cover; the structure of which can be seen with reference to fig. 2-1;
the rectification head cover 5-3 is fixed at the axis position of the air flow channel, and a convergent channel with a distance from the air inlet side to the air outlet side being smaller and smaller is formed between the rectification head cover 5-3 and the inner wall of the air flow channel, so that incoming flow can be accelerated uniformly, air flow separation is avoided, and flow loss is reduced.
Further, the fairing head cover 5-3 is conical or hemispherical, and the small-diameter end of the fairing head cover is located on the air inlet side, and the structure can be shown in a reference mode in fig. 2-2.
Preferably, the outer shell 5-1, the anti-prerotation piece 5-2 and the rectifying head cover 5-3 are integrally formed by injection molding, so that the structure is simple, and the assembly and the processing are convenient.
An embodiment of the present invention further provides a pressurized heat dissipation fan, including: the fan body and the supercharger 5 as described above, the supercharger 5 being coaxially fitted in the air intake path of the fan body. The supercharging and cooling fan provided by the scheme has corresponding beneficial effects due to the adoption of the supercharger, and specific reference can be made to the previous description, so that the repeated description is omitted.
Further, the pressurized heat dissipation fan provided in the embodiment of the present invention further includes: support 4 and spiro union piece, the fan body includes: a fan rotor 6 and a fan stator 7;
the outer shell 5-1 and the fan stator 7 are arranged on the support 4 through screw connectors (the screw 1 and the nut 2), and the structure is simple, firm and reliable.
The present solution is further described below in connection with the complete embodiments:
as shown in fig. 1-1, the supercharged heat-dissipating fan mainly includes a fan guard 3, a bracket 4, a supercharger 5, a fan rotor 6, and a fan stator 7. The fan protecting net 3, the supercharger 5 and the fan stator 7 are all locked on the bracket 4 through the screw 1 and the nut 2. As shown in fig. 2-1, the supercharger 5 comprises an outer shell 5-1, a reverse pre-rotation plate 5-2 and a fairing 5-3, wherein the outer shell 5-1 and the fairing 5-3 form a convergent channel, which can accelerate incoming flow uniformly, avoid air flow separation and reduce flow loss. The anti-pre-rotor blade can obtain a reverse rotation speed C before the airflow enters the rotor blade1UThereby achieving the supercharging effect.
The supercharging principle is as follows: FIG. 3-1 is a triangle of elementary stage velocity at the rotor blade without supercharger, Ca is axial velocity, C1Is the absolute velocity of the flow at the inlet of the rotor blade, C2Is the absolute velocity of the blade outlet flow, C1uIs the circumferential component of the absolute velocity of the rotor blade inlet flow, C2uIs the circumferential component of the absolute velocity of the bucket outlet flow, W1Is the relative velocity of the inlet flow of the rotor blade, W2For the relative velocity of the blade outlet gas flow, U is the circumferential linear velocity (bulk velocity), and C ═ W + U. The gas flow flowing axially at the inlet, i.e. C1＝Ca，C 1u0, so the air flow twist rate Δ Cu＝C2u-C1u＝C2u. Theoretical total pressure rise Δ P ═ ρ U · Δ C of the fanu。
FIG. 3-2 is a planar cascade diagram with a supercharger, and FIG. 3-3 is a counter-proprotor velocity triangle; fig. 3-4 are bucket velocity triangles with superchargers. Ca is axial velocity, C0For the absolute velocity of the airflow at the inlet of the reverse prerotation vane, C1Is the absolute velocity of the airflow at the outlet of the reverse pre-spinning disk, C1uIs the circumferential component of the absolute velocity of the air flow at the outlet of the anti-prerotation vane, C2Is the absolute velocity of the flow at the inlet of the rotor blade, C3Absolute velocity of the blade outlet flow, C2uIs the circumferential component of the absolute velocity of the rotor blade inlet flow, C3uIs the circumferential component of the absolute velocity of the bucket outlet flow, W2Is the relative velocity of the inlet flow of the rotor blade, W3For the relative velocity of the blade outlet gas flow, U is the circumferential linear velocity (bulk velocity), and C ═ W + U. The gas flow entering axially at the inlet of the anti-preswirl, i.e. C, of the supercharger0＝CaThe anti-pre-rotor blade may attain a reverse rotational speed C before the airflow enters the rotor blade1uAnd C is2＝C1，C2u＝C1uAirflow torsion velocity delta C of the rotor bladeu＝C3u-C2u(C3uAnd C2uOpposite in direction, the subtracted value is algebraic sum), so the theoretical total pressure rise Δ P ═ ρ U ·Δc of the fanuWould be larger than without the booster.
An embodiment of the present invention further provides an inverter, including: such as the booster radiator fan described above. Specifically, two cooling fans are arranged on the back of an inverter product of a certain type and are fixed on a rear cover plate through a support, and a radiator is arranged inside the cover plate.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The utility model provides a booster for set up in radiator fan's air inlet route, its characterized in that includes: an outer shell (5-1) and a reverse prerotation sheet (5-2);
the outer shell (5-1) is provided with an air flow channel, and the outer shell (5-1) is coaxially assembled with the heat dissipation fan;
the reverse pre-rotation sheet (5-2) is fixed in the air flow channel, and the wind guide rotation direction of the reverse pre-rotation sheet (5-2) is opposite to the wind guide rotation direction of the radiating fan.
2. A supercharger according to claim 1, characterised in that the number of anti-pre-swirl vanes (5-2) is multiple and evenly distributed around the central axis of the air flow channel.
3. A supercharger according to claim 1, characterised in that the cross-section of the anti-pre-swirl vanes (5-2) is circular or aerofoil.
4. The supercharger of claim 1, wherein the air flow channel is a cylindrical structure.
5. Supercharger according to claim 1, characterized in that the outer housing (5-1) is provided with screw holes for connection with the fan stator (7).
6. The supercharger of any one of claims 1-5, further comprising: a rectification head cover (5-3);
the rectifying head cover (5-3) is fixed at the axis position of the air flow channel, and a convergent channel with a distance from the air inlet side to the air outlet side being smaller and smaller is formed between the rectifying head cover (5-3) and the inner wall of the air flow channel.
7. A supercharger according to claim 6, characterised in that the fairing covers (5-3) are conical or hemispherical.
8. A supercharger according to claim 6, characterised in that the outer housing (5-1), the anti-pre-swirl vanes (5-2) and the fairing covers (5-3) are injection moulded in one piece.
9. A booster radiator fan, comprising: a fan body and a supercharger (5) according to any one of claims 1 to 8, the supercharger (5) being coaxially fitted within the air inlet path of the fan body.
10. The booster radiator fan as claimed in claim 9, further comprising: support (4) and spiro union piece, the fan body includes: a fan rotor (6) and a fan stator (7);
the outer shell (5-1) and the fan stator (7) are installed on the support (4) through the screw connector.
11. An inverter, comprising: a booster radiator fan according to claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220615434.2U CN216951000U (en) | 2022-03-21 | 2022-03-21 | Booster, pressure boost radiator fan and dc-to-ac converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220615434.2U CN216951000U (en) | 2022-03-21 | 2022-03-21 | Booster, pressure boost radiator fan and dc-to-ac converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951000U true CN216951000U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220615434.2U Active CN216951000U (en) | 2022-03-21 | 2022-03-21 | Booster, pressure boost radiator fan and dc-to-ac converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951000U (en) |
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2022
- 2022-03-21 CN CN202220615434.2U patent/CN216951000U/en active Active
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