CN210431031U - High-air-volume three-phase brushless direct current fan - Google Patents
High-air-volume three-phase brushless direct current fan Download PDFInfo
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- CN210431031U CN210431031U CN201921371365.XU CN201921371365U CN210431031U CN 210431031 U CN210431031 U CN 210431031U CN 201921371365 U CN201921371365 U CN 201921371365U CN 210431031 U CN210431031 U CN 210431031U
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Abstract
The utility model provides a big amount of wind three-phase brushless DC fan has solved that the brushless DC fan amount of wind among the prior art is little, the rotational speed is unstable under the high temperature, rotational speed control precision is low, structural strength subalternation technical problem. The utility model discloses a fan, which comprises a shell, a rotor blade, a stator, a first bearing, a second bearing, a check valve, a rear end cover, a controller component, a rotor component and a front end cover; the utility model discloses a fan has the big advantage of amount of wind in the fan of equal volume, and the biggest amount of wind can reach 9.6m3The utility model discloses a three-phase brushless direct current fan can extensively be applicable to and ventilate, dispel the heat, the air current is derived, use such as keep pressure in space flight, aviation, weapon, boats and ships and high-end civilian equipment, has very wide application and market prospect.
Description
Technical Field
The utility model relates to a brushless DC fan structural design technical field provides a large-air-volume three-phase brushless DC fan very much.
Background
The air volume is one of important parameters of the brushless direct current fan, and in order to increase the air volume of the fan, modes of increasing the rotating speed, increasing the size of fan blades and the like are generally adopted at present. However, in special application occasions, the rotating speed index and the mechanical size of the fan are limited within a certain range. Therefore, people urgently want to obtain a large-air-volume brushless direct current fan under the same volume and rotating speed index.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a three-phase brushless direct current fan of big amount of wind, permanent rotational speed, high strength.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a large-air-volume three-phase brushless direct current fan comprises a shell, rotor blades, a stator, a first bearing, a second bearing, a check valve, a rear end cover, a controller assembly, a rotor assembly and a front end cover;
the stator is bonded in the shell and comprises a stator core and a winding, a stator slot is formed in the stator core, and the winding is embedded in the stator slot;
the rotor assembly is arranged in the stator and consists of a rotor core, a permanent magnet, a shaft and a rotor sleeve, the rotor core is arranged on the periphery of the shaft in an interference fit manner, the permanent magnet is bonded on the rotor core, and the rotor sleeve is arranged with the permanent magnet in an interference fit manner;
a front end cover and a rear end cover are respectively installed at the left end and the right end of the rotor assembly, the front end cover and the rear end cover support the rotor assembly, a first step hole and a second step hole are respectively formed in the center positions of the front end cover and the rear end cover, a first stainless steel sleeve and a second stainless steel sleeve are respectively embedded into a first large-diameter hole of the first step hole and a second large-diameter hole of the second step hole to serve as a first bearing chamber and a second bearing chamber, a first bearing and a second bearing are respectively installed at shaft shoulders at the left end and the right end of the shaft, the first bearing is installed in the first bearing chamber, the second bearing is installed in the second bearing chamber, the rotor assembly is fixed between the front end cover and the rear end cover, and the front end cover is fixed on a boss in the shell through screws;
a controller assembly is arranged between the rotor assembly and the rear end cover, the controller assembly comprises a circuit board box and a circuit board assembly, the circuit board assembly is fixed on the circuit board box through screws, the circuit board box is fixed on the shell through screws, and the rear end cover is fixed on the circuit board box through screws;
install rotor flabellum in the left side of front end housing, rotor flabellum suit is in the periphery of axle, is equipped with the keyway at the left end of axle, is equipped with the navigation key on the rotor flabellum, and rotor flabellum passes through the cooperation installation of navigation key and keyway with the axle to it is spacing with rotor flabellum to install the nut at the terminal groove of axle, and rotor flabellum arranges the casing inside and adopts small clearance fit between the casing in, reduces the air leakage, improves the air output.
Further, the stator core is made by stator punching lamination to do the antirust treatment that sprays paint and improve three proofings performance. Riveting is carried out at the tip after stator core assembly, further improved structural strength and stability.
Furthermore, the first stainless steel sleeve and the second stainless steel sleeve are respectively in interference pressing with the front end cover and the rear end cover, so that the stability of a mechanical structure is guaranteed, and the stability of the rotor structure is improved.
Further, the shaft was made of 1Cr17Ni2 and heat treated.
Furthermore, the permanent magnet is made of Y30 ferrite materials, quadrupole saturation magnetization of the permanent magnet is realized, the rotor sleeve and the permanent magnet are in interference fit, the permanent magnet is prevented from falling off, and the strength is improved.
Further, the casing adopts aluminum alloy material machine tooling shaping, and production efficiency is high and stable in structure, and is equipped with guide vane in the inside of casing, helps the gas flow, increases the amount of wind.
Furthermore, the circuit board box is in a sawtooth shape, so that the heat dissipation area of the power device is increased, and the working efficiency of the fan is improved.
Furthermore, the first bearing and the second bearing are both 608ZZ type bearings, are provided with metal dust covers, and have small friction retardation.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a fan has the big advantage of amount of wind in the fan of equal volume, and the biggest amount of wind can reach 9.6m3The air blower has the characteristics of large air quantity, high strength, controllable rotating speed, capability of preventing air flow from flowing backwards, good temperature characteristic and the like. The technical problems that in the prior art, the air outlet quantity of a fan is small, the rotating speed is unstable at high temperature, the rotating speed control precision is low, the structural strength is poor and the like are solved. The utility model discloses a three-phase brushless direct current fan can extensively be applicable to and ventilate, use such as heat dissipation, air current derivation, holding pressure in space flight, aviation, weapon, boats and ships and high-end civilian equipment, has very wide application and market prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a schematic structural view of the housing;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic structural view of the front end cap;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
FIG. 7 is a schematic structural view of the rear end cap;
FIG. 8 is a sectional view taken along line A-A of FIG. 7;
FIG. 9 is a schematic view of the stator construction;
FIG. 10 is a schematic diagram of the structure of the winding unwinding;
FIG. 11 is a schematic view of the construction of the rotor assembly;
FIG. 12 is a schematic structural view of a controller assembly;
in the figure: 1-a shell; 2-rotor fan blade, 3-stator, 3-1-stator iron core; 3-2-winding; 4-a first bearing, 5-a second bearing, 6-a check valve, 7-a rear end cover and 7-1-a second stepped hole; 7-1-1-a second large diameter hole; 8-controller component, 9-rotor component, 9-1-rotor core, 9-2-permanent magnet and 9-3-shaft; 9-3-1-keyway; 9-3-2-grooves; 9-4-rotor sleeve; 10-front end cap; 10-1-a first stepped bore; 10-1-1-a first large diameter bore; 11-a first stainless steel sleeve; 12-a second stainless steel sleeve; 13-nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the large-air-volume three-phase brushless direct current fan comprises a housing 1, rotor blades 2, a stator 3, a first bearing 4, a second bearing 5, a check valve 6, a rear end cover 7, a controller assembly 8, a rotor assembly 9 and a front end cover 10;
the stator 3 is adhered to the inside of the shell 1, the stator 3 comprises a stator core 3-1 and a winding 3-2, a stator slot is formed in the stator core 3-1, and the winding 3-2 is embedded in the stator slot; the structure of the stator 3 and the winding 3-2 refer to fig. 9 and 10, respectively.
Referring to fig. 11, the rotor assembly 9 is arranged inside the stator 3, the rotor assembly 9 is composed of a rotor core 9-1, permanent magnets 9-2, a shaft 9-3 and a rotor sleeve 9-4, the rotor core 9-1 is installed on the periphery of the shaft 9-3 in an interference fit manner, the permanent magnets 9-2 are bonded on the rotor core 9-1, and the rotor sleeve 9-4 and the permanent magnets 9-2 are installed in an interference fit manner;
a front end cover 10 and a rear end cover 7 are respectively arranged at the left end and the right end of the rotor component 9, the front end cover 10 and the rear end cover 7 support the rotor component 9, a first stepped hole 10-1 and a second stepped hole 7-1 are respectively formed at the central positions of the front end cover 10 and the rear end cover 7, a first stainless steel sleeve 11 and a second stainless steel sleeve 12 are respectively embedded in a first large-diameter hole 10-1-1 of the first stepped hole 10-1 and a second large-diameter hole 7-1-1 of the second stepped hole 7-1 to serve as a first bearing chamber and a second bearing chamber, a first bearing 4 and a second bearing 5 are respectively arranged at shaft shoulders at the left end and the right end of the shaft, the first bearing 4 is arranged in a first bearing chamber, the second bearing 5 is arranged in a second bearing chamber, a rotor assembly 9 is fixed between a front end cover 10 and a rear end cover 7, and the front end cover 10 is fixed on a boss in the shell 1 through screws; the structure of the front end cover 10 refers to fig. 5-6 in particular, and the structure of the rear end cover 7 refers to fig. 7-8 in particular.
Referring to fig. 12, a controller assembly 8 is disposed between the rotor assembly 9 and the rear end cap 7, the controller assembly 8 includes a circuit board box 8-1 and a circuit board assembly 8-2, the circuit board assembly 8-2 is fixed on the circuit board box 8-1 by screws, the circuit board box 8-1 is fixed on the housing 1 by screws, and the rear end cap 7 is fixed on the circuit board box 8-1 by screws;
the left side of the front end cover 10 is provided with a rotor fan blade 2, the rotor fan blade 2 is sleeved on the periphery of a shaft 9-3, the left end of the shaft 9-3 is provided with a key groove 9-3-1, the rotor fan blade 2 is provided with a positioning key 2-1 matched with the key groove 9-3-1, the rotor fan blade 2 and the shaft 9-3 are installed through the matching of the positioning key 2-1 and the key groove 9-3-1, a nut 13 is installed at a groove 9-3-2 at the tail end of the shaft 9-3 to limit the rotor fan blade 2, the rotor fan blade 2 is arranged in the shell 1 and is in micro clearance fit with the shell 1, air leakage is reduced, and air output is improved.
The stator core 3-1 is formed by laminating stator punching sheets, and is subjected to spray painting and rust prevention treatment to improve three-proofing performance. And the end part of the stator core 3-1 is riveted after assembly, so that the structural strength and the stability are further improved.
The first stainless steel sleeve 11 and the second stainless steel sleeve 12 are respectively in interference pressing with the front end cover 10 and the rear end cover 7, so that the stability of a mechanical structure is guaranteed, and the structural stability of the rotor is improved.
The shaft was made of 1Cr17Ni2 and heat treated.
The permanent magnet 9-2 is made of Y30 ferrite material, quadrupole saturation magnetization of the permanent magnet 9-2 is achieved, the rotor sleeve 9-4 is in interference fit with the permanent magnet 9-2, the permanent magnet 9-2 is prevented from falling off, and strength is improved.
The rotor fan blade 2 is machined and formed by a grinding tool, and dynamic balance is corrected by adopting a weight reducing mode.
The shell 1 is formed by machining an aluminum alloy material, the production efficiency is high, the structure is stable, and the guide vanes 1-1 are arranged inside the shell 1, so that the gas flow is facilitated, and the air volume is increased.
The circuit board box 8-1 is in a sawtooth shape, so that the heat dissipation area of a power device is increased, and the working efficiency of the fan is improved.
The circuit board assembly 8-2 realizes the closed-loop control of the rotating speed of the fan, and has high control precision and strong anti-jamming capability. The rotating speed control of different targets can be realized at different temperatures, and the fan can operate in a safe current range;
the first bearing 4 and the second bearing 5 are both 608ZZ type bearings, are provided with metal dust covers, and have small friction drag.
The utility model discloses through the electromagnetic simulation calculation, confirm that the fan is 4 utmost points, the stator slot number is 24, and winding 3-2 adopts the star type to connect, and every groove enameled wire number of turns is 32, and every circle adopts 4 line duplex windings. The enameled wire is a QZY-2/180 polyester-imide enameled copper round wire, the wire diameter is phi 0.4mm, and the enameled wire can bear a high-temperature environment of 180 ℃;
the design of check valve 6 can prevent the air current refluence, prevents inside the barrier gets into the fan, improves the security of operation.
The utility model discloses a fan has the big advantage of amount of wind in the fan of equal volume, and the biggest amount of wind can reach 9.6m3Min, the utility model discloses a three-phase brushless direct current fan can extensively be applicable to and ventilate, dispel the heat, the air current is derived, keep uses such as pressure in space flight, aviation, weapon, boats and ships and high-end civilian equipment, has non-Has wide application and market prospect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A large-air-volume three-phase brushless direct current fan is characterized by comprising a shell, rotor blades, a stator, a first bearing, a second bearing, a check valve, a rear end cover, a controller assembly, a rotor assembly and a front end cover;
the stator is bonded in the shell and comprises a stator core and a winding, a stator slot is formed in the stator core, and the winding is embedded in the stator slot;
the rotor assembly is arranged in the stator and consists of a rotor core, a permanent magnet, a shaft and a rotor sleeve, the rotor core is arranged on the periphery of the shaft in an interference fit manner, the permanent magnet is bonded on the rotor core, and the rotor sleeve is arranged with the permanent magnet in an interference fit manner;
a front end cover and a rear end cover are respectively installed at the left end and the right end of the rotor assembly, the front end cover and the rear end cover support the rotor assembly, a first step hole and a second step hole are respectively formed in the center positions of the front end cover and the rear end cover, a first stainless steel sleeve and a second stainless steel sleeve are respectively embedded into a first large-diameter hole of the first step hole and a second large-diameter hole of the second step hole to serve as a first bearing chamber and a second bearing chamber, a first bearing and a second bearing are respectively installed at shaft shoulders at the left end and the right end of the shaft, the first bearing is installed in the first bearing chamber, the second bearing is installed in the second bearing chamber, the rotor assembly is fixed between the front end cover and the rear end cover, and the front end cover is fixed on a boss in the shell through screws;
a controller assembly is arranged between the rotor assembly and the rear end cover, the controller assembly comprises a circuit board box and a circuit board assembly, the circuit board assembly is fixed on the circuit board box through screws, the circuit board box is fixed on the shell through screws, and the rear end cover is fixed on the circuit board box through screws;
install rotor flabellum in the left side of front end housing, rotor flabellum suit is in the periphery of axle, is equipped with the keyway at the left end of axle, is equipped with the navigation key on the rotor flabellum, and rotor flabellum passes through the cooperation installation of navigation key and keyway with the axle to it is spacing with rotor flabellum to install the nut at the terminal groove of axle, and rotor flabellum arranges the casing inside and adopts small clearance fit between the casing in, reduces the air leakage, improves the air output.
2. The large-air-volume three-phase brushless direct-current fan according to claim 1, wherein the stator core is formed by laminating stator punching sheets, is subjected to paint spraying and rust preventing treatment, and is riveted at the end after being assembled.
3. The large-air-volume three-phase brushless direct current fan according to claim 1, wherein the first stainless steel sleeve and the second stainless steel sleeve are respectively in interference fit with the front end cover and the rear end cover.
4. The high-airflow three-phase brushless direct-current fan according to claim 1, wherein the shaft is made of 1Cr17Ni2 and is heat-treated.
5. The large-air-volume three-phase brushless direct-current fan according to claim 1, wherein the permanent magnet is made of Y30 ferrite material, quadrupole saturation magnetization of the permanent magnet is performed, and the rotor sleeve and the permanent magnet are in interference fit, so that the permanent magnet is prevented from falling off, and the strength is improved.
6. The large-air-volume three-phase brushless direct-current fan as claimed in claim 1, wherein the housing is machined from an aluminum alloy material, and guide vanes are provided inside the housing.
7. The large-air-volume three-phase brushless direct current fan according to claim 1, wherein the circuit board box is in a zigzag shape, so that the heat dissipation area of a power device is increased, and the working efficiency of the fan is improved.
8. The large-air-volume three-phase brushless direct-current fan according to claim 1, wherein the first bearing and the second bearing are both 608 ZZ-type bearings, and are provided with metal dust covers and low in friction drag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371365.XU CN210431031U (en) | 2019-08-22 | 2019-08-22 | High-air-volume three-phase brushless direct current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371365.XU CN210431031U (en) | 2019-08-22 | 2019-08-22 | High-air-volume three-phase brushless direct current fan |
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| Publication Number | Publication Date |
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| CN210431031U true CN210431031U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921371365.XU Active CN210431031U (en) | 2019-08-22 | 2019-08-22 | High-air-volume three-phase brushless direct current fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492631A (en) * | 2019-08-22 | 2019-11-22 | 沈阳兴华航空电器有限责任公司 | A kind of Wind Volume three-phase brushless DC fan |
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2019
- 2019-08-22 CN CN201921371365.XU patent/CN210431031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492631A (en) * | 2019-08-22 | 2019-11-22 | 沈阳兴华航空电器有限责任公司 | A kind of Wind Volume three-phase brushless DC fan |
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