阅读说明：本技术 一种用于通风换气的高效低噪混流风机 (A high-efficient low noise mixed flow fan for ventilation ) 是由 薛智鉴 尹东凯 黄正 李源 施炜 于 2021-10-14 设计创作，主要内容包括：本发明涉及混流风机技术领域,具体为一种用于通风换气的高效低噪混流风机,包括风机固定外筒体,所述风机固定外筒体的外表面位置固定安装有支撑块,所述风机固定外筒体的两端表面位置均分别固定安装有筒体端檐,所述风机固定外筒体的内部固定安装有电机安装板,所述风机固定外筒体的内部位于电机安装板的下表面位置固定安装有电机支撑竖板,所述电机安装板的上表面位置固定安装有电机固定板；通过风叶机构中的主动磁铁与从动磁铁感应传动能够使得传动过程具有柔性,使得风机扇叶运行更加平顺,能够有效降低风机扇叶运行产生的噪音,且能够降低驱动电机的启动负载,从而降低启动电流,延长驱动电机使用寿命并减少驱动电机启动时对电网的干扰。(The invention relates to the technical field of mixed flow fans, in particular to a high-efficiency low-noise mixed flow fan for ventilation, which comprises a fan fixing outer barrel, wherein a supporting block is fixedly arranged on the outer surface of the fan fixing outer barrel; the driving magnet and the driven magnet in the fan blade mechanism are in induction transmission, so that the transmission process is flexible, the fan blades can run smoothly, the noise generated by the running of the fan blades can be effectively reduced, the starting load of the driving motor can be reduced, the starting current is reduced, the service life of the driving motor is prolonged, and the interference to a power grid when the driving motor is started is reduced.)

1. The utility model provides a high-efficient low noise mixed flow fan for ventilation, includes the fixed outer barrel of fan (1), the surface position fixed mounting of the fixed outer barrel of fan (1) has supporting shoe (2), the both ends surface position of the fixed outer barrel of fan (1) is equallyd divide and is do not fixed mounting have barrel end eaves (3), the inside fixed mounting of the fixed outer barrel of fan (1) has motor mounting panel (4), the inside of the fixed outer barrel of fan (1) is located the lower surface position fixed mounting of motor mounting panel (4) and is had motor support riser (6), the upper surface position fixed mounting of motor mounting panel (4) has motor fixed plate (5), the upper surface position fixed mounting of motor fixed plate (5) has driving motor (7), the inside interlude of driving motor (7) is equipped with motor rotation axis (8), the method is characterized in that: the fan dust filter is characterized in that a fan blade mechanism with a magnetic transmission function is arranged at one end, located on the motor rotating shaft (8), of the inner portion of the outer fan fixing barrel body (1), and a fan cover mechanism with a dust filtering function is arranged at the other end, located on the motor rotating shaft (8), of the inner portion of the outer fan fixing barrel body (1).

2. A high efficiency low noise mixed flow fan for ventilation according to claim 1, wherein: the fan blade mechanism comprises a driving frame (801) fixedly installed at the surface position of one end of the motor rotating shaft (8), a magnet fixing disc (802) is fixedly installed at the surface position of the side end of the driving frame (801), and a driving magnet (803) is fixedly installed at the surface position of one side of the magnet fixing disc (802).

3. A high efficiency low noise mixed flow fan for ventilation according to claim 2, wherein: the inner wall fixed mounting of the outer barrel of fan (1) has axle sleeve support frame (804), the intermediate position fixed mounting of axle sleeve support frame (804) has fixed axle sleeve (805), the inside fixed mounting of fixed axle sleeve (805) has deep groove ball bearing (806), the inner circle interlude of deep groove ball bearing (806) is equipped with driven rotation axis (807).

4. A high efficiency low noise mixed flow fan for ventilation according to claim 3, wherein: a driven frame (808) is fixedly installed at one end surface position of the driven rotating shaft (807), a driven fixed disc (809) is fixedly installed at the side end surface position of the driven frame (808), a driven magnet (810) is fixedly installed at one side surface position of the driven fixed disc (809), and the driven magnet (810) corresponds to the driving magnet (803) in position.

5. The efficient low noise mixed flow fan for ventilation according to claim 4, wherein: the outer surface of driven rotation axis (807) is close to other end surface position cover and is established and install flabellum sleeve (811), the outer surface position fixed mounting of flabellum sleeve (811) has fan flabellum (812).

6. A high efficiency low noise mixed flow fan for ventilation according to claim 1, wherein: the fan cover mechanism comprises a fixed support rod (101) fixedly installed on the inner wall surface of the outer fixed fan barrel (1), and a dust filtering fan cover (102) is fixedly installed at the center of the inner fixed support rod (101) of the outer fixed fan barrel (1).

7. The efficient low noise mixed flow fan for ventilation according to claim 6, wherein: the utility model discloses a motor dust filter, including motor shaft (8), fixed sleeve (103) are established to the surface of motor shaft (8) and are installed near other end surface position cover, and the surface position fixed mounting of fixed sleeve (103) has sub-end flabellum (104), ventilation mesh (105) have been seted up to one side surface position of straining dirt fan housing (102), one side cover that the inside of straining dirt fan housing (102) is located ventilation mesh (105) is installed and is strained dirt cotton layer (106).

Technical Field

The invention relates to the technical field of mixed flow fans, in particular to a high-efficiency low-noise mixed flow fan for ventilation.

Background

The mixed flow fan is a fan between an axial flow fan and a centrifugal fan, an impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, and the motion of the air in a shell mixes two motion modes of the axial flow and the centrifugal motion, so that the mixed flow fan is called mixed flow.

The traditional mixed flow fan is not stable enough in acceleration in use, high in noise and high in current during starting, the burden on a driving motor and an external power grid is heavy, the service life of the motor is influenced, dust is easy to accumulate on the driving motor in a high-dust place, the heat dissipation and operation of the motor are influenced, and the service life of the motor is further influenced.

Disclosure of Invention

The invention aims to provide a high-efficiency low-noise mixed flow fan for ventilation and air exchange, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a high-efficiency low-noise mixed flow fan for ventilation comprises a fan fixing outer cylinder body, wherein a supporting block is fixedly arranged on the outer surface of the fan fixing outer cylinder body, the surface positions of the two ends of the fan fixed outer cylinder are respectively fixedly provided with a cylinder end brim, the inner part of the fan fixed outer cylinder is fixedly provided with a motor mounting plate, a motor supporting vertical plate is fixedly arranged in the fan fixing outer cylinder body and positioned on the lower surface of the motor mounting plate, a motor fixing plate is fixedly arranged on the upper surface of the motor mounting plate, a driving motor is fixedly arranged on the upper surface of the motor fixing plate, a motor rotating shaft is inserted in the driving motor, a fan blade mechanism with a magnetic transmission function is arranged at one end of the motor rotating shaft in the fan fixing outer cylinder body, and a fan cover mechanism with a dust filtering function is arranged at the other end, positioned on the motor rotating shaft, of the inner part of the fan fixing outer cylinder.

Preferably, the fan blade mechanism comprises a driving frame fixedly installed on the surface of one end of the motor rotating shaft, a magnet fixing disc is fixedly installed on the surface of the side end of the driving frame, and a driving magnet is fixedly installed on the surface of one side of the magnet fixing disc.

Preferably, the inner wall of the outer cylinder body fixed by the fan is fixedly provided with a shaft sleeve supporting frame, the middle position of the shaft sleeve supporting frame is fixedly provided with a fixed shaft sleeve, the inner part of the fixed shaft sleeve is fixedly provided with a deep groove ball bearing, and a driven rotating shaft is arranged in the inner ring of the deep groove ball bearing in an inserting mode.

Preferably, a driven frame is fixedly mounted on the surface of one end of the driven rotating shaft, a driven fixed disc is fixedly mounted on the surface of the side end of the driven frame, a driven magnet is fixedly mounted on the surface of one side of the driven fixed disc, and the driven magnet corresponds to the driving magnet in position.

Preferably, the outer surface of the driven rotating shaft is sleeved with a fan blade sleeve at a position close to the surface of the other end, and the outer surface of the fan blade sleeve is fixedly provided with a fan blade.

Preferably, the fan housing mechanism comprises a fixed support rod fixedly installed on the inner wall surface of the outer fixed cylinder of the fan, and the dust filtering fan housing is fixedly installed in the center of the fixed support rod inside the outer fixed cylinder of the fan.

Preferably, the outer surface of the motor rotating shaft is provided with a fixed sleeve close to the other end surface position, the outer surface position of the fixed sleeve is fixedly provided with a sub-end fan blade, a ventilation mesh is arranged on one side surface of the dust filtration fan cover, and a dust filtration cotton layer is arranged on one side, located in the ventilation mesh, of the inner portion of the dust filtration fan cover in a covering mode.

Compared with the prior art, the invention has the beneficial effects that:

the driving magnet and the driven magnet in the fan blade mechanism are in inductive transmission, so that the transmission process is flexible, the fan blades can run smoothly, the noise generated by the running of the fan blades can be effectively reduced, and the starting load of the driving motor can be reduced, so that the starting current is reduced, the service life of the driving motor is prolonged, and the interference of the driving motor on a power grid during starting is reduced;

can filter the dust in the inlet air current through fan housing mechanism to blow out the air current protective screen, make the air current that blows driving motor cleaner, form the air current protection protective screen on driving motor surface, reduce the dust on driving motor surface and pile up, further extension driving motor life, when mixed flow fan starts through fan housing mechanism, can blow out the air current and accelerate the fan flabellum rotatory, make mixed flow fan start initial stage efficiency higher.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic perspective half-section view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic perspective half-section view of the present invention.

In the figure: 1. the fan fixes the outer cylinder; 2. a support block; 3. a cylinder end brim; 4. a motor mounting plate; 5. a motor fixing plate; 6. a motor supporting vertical plate; 7. a drive motor; 8. a motor rotating shaft; 801. a driving frame; 802. a magnet fixing disc; 803. a driving magnet; 804. a shaft sleeve support frame; 805. fixing the shaft sleeve; 806. a deep groove ball bearing; 807. a driven rotating shaft; 808. a driven frame; 809. a driven fixed disc; 810. a driven magnet; 811. a fan blade sleeve; 812. fan blades; 101. fixing the support rod; 102. a dust filtering fan cover; 103. fixing the sleeve; 104. a sub-end fan blade; 105. ventilating mesh holes; 106. a dust filtering cotton layer.

Detailed Description

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.

Referring to fig. 1 to 5, the present invention provides a technical solution: a high-efficiency low-noise mixed flow fan for ventilation comprises a fan fixing outer barrel body 1, a supporting block 2 is fixedly installed at the outer surface position of the fan fixing outer barrel body 1, the supporting block 2 is welded at the outer surface position of the fan fixing outer barrel body 1, barrel body end eaves 3 are respectively and fixedly installed at the surface positions of two ends of the fan fixing outer barrel body 1, a motor mounting plate 4 is fixedly installed inside the fan fixing outer barrel body 1, the motor mounting plate 4 is fixedly welded with the inner wall of the fan fixing outer barrel body 1, a motor supporting vertical plate 6 is fixedly installed at the lower surface position of the motor mounting plate 4 inside the fan fixing outer barrel body 1, the motor supporting vertical plate 6 can support the motor mounting plate 4 to prevent the motor mounting plate 4 from deforming in long-term use, a motor fixing plate 5 is fixedly installed at the upper surface position of the motor mounting plate 4, and a driving motor 7 is fixedly installed at the upper surface position of the motor fixing plate 5, the motor fixing plate 5 and the driving motor 7 are fixed through welding, a motor rotating shaft 8 is arranged in the driving motor 7 in an inserting mode, a fan blade mechanism with a magnetic transmission function is arranged at one end, located at the motor rotating shaft 8, of the inner portion of the outer barrel 1 fixed by the fan, and a fan cover mechanism with a dust filtering function is arranged at the other end, located at the motor rotating shaft 8, of the inner portion of the outer barrel 1 fixed by the fan.

The fan blade mechanism comprises a driving frame 801 fixedly arranged on the surface of one end of the motor rotating shaft 8, a magnet fixing disc 802 is fixedly arranged on the surface of the side end of the driving frame 801, the magnet fixing disc 802 and the driving frame 801 can be manufactured in an integrated forming mode, an active magnet 803 is fixedly arranged on the surface of one side of the magnet fixing disc 802, and the active magnet 803 and the magnet fixing disc 802 can be fixed in a glue bonding mode; a shaft sleeve support frame 804 is fixedly installed on the inner wall of the fan fixing outer cylinder body 1, a fixing shaft sleeve 805 is fixedly installed in the middle of the shaft sleeve support frame 804, a deep groove ball bearing 806 is fixedly installed inside the fixing shaft sleeve 805, and a driven rotating shaft 807 is inserted into the inner ring of the deep groove ball bearing 806; a driven frame 808 is fixedly arranged on one end surface of the driven rotating shaft 807, a driven fixing disc 809 is fixedly arranged on the side end surface of the driven frame 808, a driven magnet 810 is fixedly arranged on one side surface of the driven fixing disc 809, and the driven magnet 810 corresponds to the driving magnet 803 in position, so that the driving magnet 803 can pass through the corresponding position of the driven magnet 810 in the rotating process, and the driven magnet 810 is driven to rotate along with the rotating process; the outer surface of the driven rotating shaft 807 is provided with a fan blade sleeve 811 in a position close to the other end surface, the fan blade sleeve 811 and the driven rotating shaft 807 can be fixed in an interference fit manner, the outer surface of the fan blade sleeve 811 is fixedly provided with a fan blade 812, and the fan blade sleeve 811 and the fan blade 812 can be fixed in a welding or integrated manner.

The fan cover mechanism comprises a fixed support rod 101 fixedly arranged on the inner wall surface of the fan fixing outer cylinder 1, the fixed support rod 101 is fixedly welded with the inner wall surface of the fan fixing outer cylinder 1, and a dust filtering fan cover 102 is fixedly arranged in the fan fixing outer cylinder 1 at the central position of the fixed support rod 101; the outer surface of the motor rotating shaft 8 is sleeved with a fixing sleeve 103 close to the other end surface, the fixing sleeve 103 and the motor rotating shaft 8 can be fixed in an interference fit manner, a sub-end fan blade 104 is fixedly installed at the outer surface of the fixing sleeve 103, a ventilation mesh 105 is arranged at one side surface of the dust filtering fan housing 102, the ventilation mesh 105 can enable air flow to normally pass through when the sub-end fan blade 104 rotates, a dust filtering cotton layer 106 is installed on one side, located at the ventilation mesh 105, of the inside of the dust filtering fan housing 102 in a covering manner, the dust filtering cotton layer 106 is attached to one side surface of the ventilation mesh 105, after the air flow passes through the ventilation mesh 105, dust and impurities can be filtered and removed by the dust filtering cotton layer 106, so that cleanness of the air flow blowing to the surface of the driving motor 7 is ensured, when air flow is influenced by excessive dust accumulated on the surface of the dust filtering cotton layer 106 due to long-time use, dust on the surface of the dust filtering cotton layer 106 can be cleaned by a brush or a dust suction device, ensuring the normal use of the dust filter cotton layer 106.

The working principle is as follows: when the mixed flow fan is used, firstly, the power supply of the driving motor 7 needs to be switched on, the driving motor 7 rotates and runs, the driving motor 7 drives the sub-end fan blade 104 and the driving frame 801 to rotate through the motor rotating shaft 8, the rotating speed of the sub-end fan blade 104 is consistent with that of the motor rotating shaft 8, firstly, airflow is generated to blow to the fan blade 812, the driving frame 801 rotates to drive the driving magnet 803 to rotate, the driving magnet 803 is attracted through magnetic force to enable the driven magnet 810 to rotate along with the rotation and gradually accelerate, the driven magnet 810 drives the driven rotating shaft 807 to rotate through the driven frame 808, the driven rotating shaft 807 rotates to drive the fan blade 812 to synchronously rotate, therefore, after the driving motor 7 is started, the fan blade 812 can rotate along with the rotation through the structure, the airflow generated by the running of the sub-end fan blade 104 blows to the fan blade 812, and the rotation of the fan blade 812 can be accelerated when the low rotating speed is started at the initial stage of the fan blade 812, improve fan flabellum 812 speed-raising efficiency, and the air current that sub-end flabellum 104 operation produced can pass through driving motor 7 at the in-process that blows to fan flabellum 812, form the air current on driving motor 7 surface and cover, prevent that driving motor 7 from accumulating the dust in a large number in long-time work, influence driving motor 7 heat dissipation and normal operating, because the air current that sub-end flabellum 104 operation produced filters cleaner through dust filtration cotton layer 106, consequently its air current that blows to driving motor 7 itself can not lead to driving motor 7 surface laying dust.

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.