Position-sensorless control DC brushless fan
A brushless DC and sensor technology, applied in the direction of connection with control/drive circuits, electromechanical devices, electrical components, etc., can solve the problems of electromagnetic noise, slow response, large power consumption, etc., achieve reduced volume, increased energy density, Effect of life improvement
Inactive Publication Date: 2018-09-25
上海日盈机电设备有限公司
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Problems solved by technology
Solve and overcome the problems of existing fan motors such as large volume, heavy weight, high power consumption, electromagnetic noise, low efficiency, slow response cost, etc., the utility model DC fan motor consists of:
Method used
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Embodiment 1
[0015] [Embodiment 1] Pass through embodiment below, and in conjunction with appendix figure 1 , figure 2 , image 3 Further description of brushless DC fans without position sensor control.
[0016] [Example 1]
[0017] 1. 3 impellers; 4 shafts; 5 impeller assemblies composed of magnetic steel yoke plates, 6 magnetic steels glued to the impeller assembly; after magnetization and dynamic balance adjustment, the rotor is formed. Provides a stable magnetic field for fan rotation.
[0018] 3. 7 Connecting board 1PCS; 9 air core cup coil windings; 8 drive circuit PCBA; A coil winding center line coincides with the magnetic center line of the magnetic steel A. Ensure energy conversion efficiency is maximized. Such as image 3 shown. The role of the stator drive component is to drive the coil winding to generate a magnetic field that interacts with the rotor magnetic field to make the fan motor continue to rotate. Using the back EMF method, the rotor position signal is obta...
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The invention discloses a position-sensorless control DC brushless fan, and the fan is used for as a cooling fan for automotive electronic products, scientific electronic instruments, electronic and electrical products and household appliances. The fan solves problems that a conventional DC fan is big in friction, is large in loss, is high in maintenance cost, is large in heating quantity, is short in service life, is small in output power, is high in IC cost, is big in size, is complex in structure, and is difficult to be small in size. The remarkable features of the fan are that the fan employs the following new technologies: employing an integrated circuit DRV10963 of TI as a commutator and driver of the fan, so as to detect the position of a magnetic field, drive a coreless coil winding to interact with a fan rotor, and enable the fan rotor to continuously rotate; employing a coreless motor structure which is remarkable in energy-saving characteristic, sensitivity control characteristic and stable operation characteristic as a high-efficiency energy conversion device, which is the development direction of a motor; and employing an axial structure magnetic field, thereby improving the energy conversion efficiency, and increasing the torque volume ratio.
Description
technical field [0001] The DC brushless fan without position sensor control developed by the present invention is a fan motor for local heat dissipation of computers, LEDs, automotive electronic products, scientific electronic instruments, civil aviation equipment, portable equipment, 3D printing and other equipment. Background technique [0002] The existing DC fan motor, the motor structure adopts the conventional iron core motor structure, the driving circuit is mainly composed of a single Hall IC and the coil winding, and the magnetic field adopts the radial magnetic field. Although it is widely used at present, there are still many shortcomings. : The structure of the iron core makes the fan motor stator bulkier, the weight increases by more than 30%, and the mechanical energy loss is large. The iron core material makes the fan motor have magnetic damping and iron loss, which increases the motor drive power and iron loss heat source. Make the motor consume more power. ...
Claims
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IPC IPC(8): H02K11/33H02K11/21
Inventor 刘明禄曹朋双顾明志
Owner 上海日盈机电设备有限公司