CN211397964U - Direct-current brushless motor type negative pressure fan - Google Patents
Direct-current brushless motor type negative pressure fan Download PDFInfo
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- CN211397964U CN211397964U CN201920829047.7U CN201920829047U CN211397964U CN 211397964 U CN211397964 U CN 211397964U CN 201920829047 U CN201920829047 U CN 201920829047U CN 211397964 U CN211397964 U CN 211397964U
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Abstract
The utility model discloses a brushless DC motor type negative pressure air fan, wherein, including the fan shell and set up in the inside motor controller of fan shell, brushless DC motor, the impeller, brushless DC motor is by the stator, the rotor, the three-phase line is constituteed, the rotor is connected with the impeller, the three-phase line winding is in the periphery of stator, motor controller is by power supply circuit, feedback circuit, a control circuit, drive circuit, power device constitutes, power supply circuit external connection is equipped with the power, power supply circuit connects in control circuit, feedback circuit respectively with the three-phase line, control circuit connects, control circuit control connects drive circuit, drive circuit control connects power device, power device respectively with the power, the three-phase line is connected.
Description
Technical Field
The utility model relates to a fan technical field, concretely relates to brushless DC motor type negative-pressure air fan.
Background
The existing negative pressure fan adopts a 220V or 380V alternating current asynchronous motor to drive fan blades, if speed regulation is needed, a frequency converter is distributed to change the speed, the alternating current asynchronous motor is the most widely used motor at present, the use is simple, but the motor has low efficiency and obvious heating, the frequency converter is required to be additionally arranged in the occasion needing speed regulation, the cost is increased, and in the low speed, the motor has low efficiency, the energy waste of the product is serious, and the low-carbon environment-friendly policy advocated by the current state is not met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a DC brushless motor type negative pressure air fan, can be at the inside permanent magnet rotor that uses of DC brushless motor, it is rotatory to produce the magnetic field through stator outlying three-phase line, the loss that can effectively reduce the energy, by the speed of the feedback circuit real-time feedback DC brushless motor who connects in DC brushless motor, the phase place, voltage, signal such as electric current and transmission give control circuit, control circuit real-time regulation control drive circuit, realize the function of synchronous speed governing, effectively solve the energy, moreover, the steam generator is simple in structure, convenient to use, a defect that leads to for solving prior art.
In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a direct current brushless motor type negative-pressure air fan, wherein, including the fan shell and set up in motor controller, direct current brushless motor, the impeller inside the fan shell, direct current brushless motor comprises stator, rotor, three-phase line, the rotor with the impeller is connected, the winding of three-phase line is in the periphery of stator, motor controller comprises power supply circuit, feedback circuit, control circuit, drive circuit, power device, the external connection of power supply circuit is equipped with the power, power supply circuit connect in control circuit, feedback circuit respectively with the three-phase line control circuit connect, control circuit control connects drive circuit, drive circuit control connects the power device, the power device respectively with the power, the three-phase line is connected.
In the above dc brushless motor type negative pressure fan, the control circuit is internally provided with a CPU and a peripheral circuit connected to the CPU, and the CPU is controlled and connected to the driving circuit.
In the above dc brushless motor type negative pressure fan, there are 22 stators, and every two stators form a pair.
In the above dc brushless motor type negative pressure fan, the rotor is a permanent magnet rotor.
According to the above the utility model relates to a technical scheme effect that DC brushless motor type negative-pressure air fan provided is: the permanent magnet rotor is used in the brushless DC motor, the magnetic field is generated by three phase lines on the periphery of the stator to drive the rotor to rotate, the loss of energy can be effectively reduced, signals such as speed, phase, voltage and current of the brushless DC motor are fed back in real time by a feedback circuit connected to the brushless DC motor and transmitted to a control circuit, the control circuit adjusts and controls a driving circuit in real time, the function of synchronous speed regulation is realized, the energy is effectively solved, the structure is simple, and the use is convenient.
Drawings
Fig. 1 is a schematic structural view of a dc brushless motor type negative pressure fan of the present invention.
Wherein the reference numbers are as follows: motor controller 110, brushless DC motor 120, impeller 130, power supply 140, power supply circuit 111, feedback circuit 112, control circuit 113, drive circuit 114, power device 115, stator 121, rotor 122, three-phase line 123.
Detailed Description
In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following specific drawings.
The utility model discloses a preferred embodiment provides a DC brushless motor type negative pressure air fan, the purpose is at the inside permanent magnet rotor that uses of DC brushless motor, it is rotatory to produce the magnetic field through stator outlying three-phase line, can effectively reduce the loss of energy, by the speed of the real-time feedback DC brushless motor of the feedback circuit who connects in DC brushless motor, the phase place, voltage, signal such as electric current and transmission give control circuit, control circuit adjusts control drive circuit in real time, realize synchronous speed governing's function, effectively solve the energy, moreover, the steam generator is simple in structure, and convenient to use.
As shown in fig. 1, a dc brushless motor type negative pressure fan includes a fan case, and a motor controller 110, a dc brushless motor 120, and an impeller 130 disposed inside the fan case, where the dc brushless motor 120 includes a stator 121, a rotor 122, and three-phase lines 123, the rotor 122 is connected to the impeller 130, the three-phase lines 123 are wound around the stator 121, the motor controller 110 includes a power circuit 111, a feedback circuit 112, a control circuit 113, a driving circuit 114, and a power device 115, the power circuit 111 is externally connected to the power circuit 111, the power circuit 111 is connected to the control circuit 113, the feedback circuit 112 is respectively connected to the three-phase lines 123 and the control circuit 113, the control circuit 113 is connected to the driving circuit 114, the driving circuit 114 is connected to the power device 115, and the power device 115 is respectively connected to the power circuit 140 and the three-phase lines 123.
In the dc brushless motor type negative pressure fan provided by this embodiment, a control circuit 113 is provided with a CPU and a peripheral circuit connected to the CPU, the CPU controls and is connected to the driving circuit 114, when the dc brushless motor 120 is used, the feedback circuit 112 detects signals such as speed, phase, voltage, and current of the current dc brushless motor 120 in real time, and transmits the detected feedback signal state to the control circuit 113, the CPU in the control circuit 113 calculates the feedback signal and generates a control signal, the control circuit 113 controls the driving circuit 114 to drive the power device 115 to operate after receiving the control signal, the power device 115 generates a magnetic field through the three-phase line 123 to drive the rotor 122 to rotate, and the rotation speed can be adjusted according to the brushless dc motor 120 in real time.
In the negative pressure fan of the dc brushless motor type according to this embodiment, 22 stators 121 are used, and each two stators 121 form a pair.
In the negative pressure blower of the dc brushless motor type provided in this embodiment, the rotor 122 is a permanent magnet rotor.
To sum up, the utility model discloses a brushless DC motor type negative pressure air fan can be at the inside permanent magnet rotor that uses of brushless DC motor, it is rotatory to produce the magnetic field through stator outlying three-phase line and drive the rotor, can effectively reduce the loss of energy, by the speed of connecting in brushless DC motor's feedback circuit real time feedback brushless DC motor, the phase place, voltage, signal such as electric current and transmission give control circuit, control circuit adjusts control drive circuit in real time, realize synchronous speed regulation's function, effectively solve the energy, moreover, the steam generator is simple in structure, and convenient to use.
The above description has been made of specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (4)
1. The utility model provides a direct current brushless motor type negative-pressure air fan, its characterized in that, including the fan shell and set up in motor controller, direct current brushless motor, the impeller of fan shell inside, direct current brushless motor comprises stator, rotor, three-phase line, the rotor with the impeller is connected, three-phase line winding is in the periphery of stator, motor controller comprises power supply circuit, feedback circuit, control circuit, drive circuit, power device, the external connection of power supply circuit is equipped with the power, power supply circuit connect in control circuit, feedback circuit respectively with the three-phase line control circuit connection, control circuit control connection drive circuit, drive circuit control connection the power device, the power device respectively with the power, the three-phase line is connected.
2. The dc brushless motor type negative pressure fan according to claim 1, wherein a CPU and a peripheral circuit connected to the CPU are provided inside the control circuit, and the CPU is connected to the driving circuit.
3. A brushless dc motor type negative pressure fan as claimed in claim 2, wherein there are 22 stators, and each two of said stators form a pair.
4. A brushless dc motor type negative pressure air blower according to claim 2, wherein said rotor is a permanent magnet rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829047.7U CN211397964U (en) | 2019-06-04 | 2019-06-04 | Direct-current brushless motor type negative pressure fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829047.7U CN211397964U (en) | 2019-06-04 | 2019-06-04 | Direct-current brushless motor type negative pressure fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211397964U true CN211397964U (en) | 2020-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920829047.7U Active CN211397964U (en) | 2019-06-04 | 2019-06-04 | Direct-current brushless motor type negative pressure fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211397964U (en) |
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2019
- 2019-06-04 CN CN201920829047.7U patent/CN211397964U/en active Active
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