CN201947144U

CN201947144U - Permanent magnet brushless direct current motor of bean juice maker

Info

Publication number: CN201947144U
Application number: CN2011200014646U
Authority: CN
Inventors: 罗健全; 杨向宇
Original assignee: Jiangkou Taishan City Electrical Equipment Manufacturing Co Ltd
Current assignee: Jiangkou Taishan City Electrical Equipment Manufacturing Co Ltd
Priority date: 2011-01-05
Filing date: 2011-01-05
Publication date: 2011-08-24
Anticipated expiration: 2021-01-05

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a permanent magnet brushless direct current motor of a bean juice maker. The permanent magnet brushless direct current motor comprises an end cover and a stator, wherein the stator is arranged in the end cover, a rotor which is a magnetic steel type rotor is arranged in the stator. The permanent magnet brushless direct current motor has the advantages of simple structure, small volume, light weight, simple production process, higher reliability, good stability, high adaptability and simple repair and maintenance.

Description

The soy bean milk making machine non-brush permanent-magnet DC motor

Technical field

The utility model belongs to technical field of motors, specifically, relates to a kind of soy bean milk making machine non-brush permanent-magnet DC motor.

Background technology

Along with the development of electric tool industry, the client is more and more higher to the requirement of motor, and bigger power to volume ratio, stronger overload capacity, better reliability, higher cost performance become client's first-selection.

At present, the drive motors that is used on the small household appliances such as soy bean milk making machine generally adopts interchange to encourage motor entirely, though it is cheap, during its work, the rotating speed height, noise is big, the power height, vibration is big, life-span is short, and the electromagnetic consumable height of excitation winding, and its complex structure are made and the maintenance cost height.

The utility model content

The utility model has overcome shortcoming of the prior art, and a kind of soy bean milk making machine non-brush permanent-magnet DC motor is provided, and electromagnetic consumable is low, and is simple in structure, low cost of manufacture, and easily assembling, safer, efficiency is higher, noise is lower and performance is better.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of soy bean milk making machine non-brush permanent-magnet DC motor comprises end cap and is located at the interior stator of this end cap that be provided with rotor in this stator, described rotor is a magnet steel formula rotor.

Further, described magnet steel formula rotor is a rubidium iron boron magnet steel watt.

Further, described end cap is divided into front end housing and rear end cap.

Further, also comprise power circuit module, motor drive module, signal processing module and human-computer interface module.

Further, described power circuit module comprises current rectifying and wave filtering circuit, non-isolated direct current 15V circuit and direct current 5V circuit.

Further, described motor drive module is the three-phase bridge drive circuit that power MOSFET tube is formed.

Further, described signal processing module comprises three-phase back electromotive force circuit, voltage signal change-over circuit and operating current testing circuit.

Further, described three-phase back electromotive force circuit comprises RC low pass filter and single-chip microcomputer.

Compared with prior art, the beneficial effects of the utility model are:

1, the utility model is simple in structure, volume is little, in light weight, manufacturing process is simple, the reliability height, good stability, adaptability is strong, maintenance and maintenance are simple.

2, the utility model adopts magnet steel formula rotor, and the excitation winding of having removed general motor from has reduced electromagnetic consumable, do not have the commutation carbon brush simultaneously, so just do not have the mechanical friction loss, improved operational efficiency, overall efficiency has realized the purpose of power and energy saving greater than 90%.

3, the design of front end housing and rear end cap makes the assembling of motor and maintenance be more prone to, make things convenient for.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is a front view of the present utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the theory diagram of control system;

Fig. 4 is the circuit diagram of power circuit module;

Fig. 5 is the circuit diagram of signal processing module;

Fig. 6 is control circuit interface circuit figure.

Embodiment

As shown in Figure 1, 2, soy bean milk making machine non-brush permanent-magnet DC motor described in the utility model, comprise front end housing 1 and rear end cap 2, be provided with stator 3 in this front end housing 1 and the rear end cap 2, be provided with rotor 4 in this stator 3, rotor 4 is located in the rotating shaft 5, rotor 4 is a magnet steel formula rotor, and in the present embodiment, magnet steel formula rotor adopts the high-performance rare-earth permanent-magnetic body, be specially rubidium iron boron magnet steel watt, this motor lower portion also is provided with lead assemblies 6.

Control system of the present utility model such as Fig. 3 comprise power circuit module, motor drive module, signal processing module, human-computer interface module and function expansion interface circuit to shown in Figure 6.

Described power circuit module comprises current rectifying and wave filtering circuit, non-isolated direct current 15V circuit and direct current 5V circuit.

Current rectifying and wave filtering circuit: the civil power alternating current 220V is changed into direct current, as soy bean milk making machine brushless DC motor driving power.

Non-isolated direct current 15V circuit: for the mos gate utmost point drives and the signal processing circuit power supply.

Direct current 5V circuit: be the single-chip microcomputer power supply.

Motor drive module is that power MOSFET tube is formed the three-phase bridge drive circuit, is used to drive the soy bean milk making machine DC Brushless Motor.

Signal processing module comprises three-phase back electromotive force circuit, voltage signal change-over circuit and operating current testing circuit.

1) brushless DC motor three-phase back electromotive force circuit: behind RC low pass filter processing of motor three-phase back electromotive force process hardware and single-chip microcomputer signal operation, software cooperates with hardware, produces suitable commutation signal; 2) brushless DC motor operating voltage signaling conversion circuit and brushless DC motor operating current testing circuit.

Also comprise man-machine interface circuit and function expansion interface circuit, the man-machine interface circuit adopts the touch-switch mode as function selecting, and LED light is exported as the soy bean milk making machine status signal.

Control system of the present utility model has the following advantages, and A. saves the production cost of sensor installation; B. reduce the lead-in wire of brushless DC motor; C. increase work efficiency; D. improve reliability, life-saving, this driver of E. and integrated driving sensorless DC motor function and soy bean milk making machine complete machine function, control circuit board is accomplished integrated, and a nearly step is dwindled board area, reduces cost.

The utility model is not limited to above-mentioned execution mode, if various changes of the present utility model or distortion are not broken away from spirit and scope of the present utility model, if these changes and distortion belong within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and distortion.

Claims

1. a soy bean milk making machine non-brush permanent-magnet DC motor is characterized in that: comprise end cap and be located at the interior stator of this end cap that be provided with rotor in this stator, described rotor is a magnet steel formula rotor.

2. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 1 is characterized in that: described magnet steel formula rotor is a rubidium iron boron magnet steel watt.

3. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 1 is characterized in that: described end cap is divided into front end housing and rear end cap.

4. according to each described soy bean milk making machine non-brush permanent-magnet DC motor of claim 1 to 3, it is characterized in that: also comprise power circuit module, motor drive module, signal processing module and human-computer interface module.

5. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 4 is characterized in that: described power circuit module comprises current rectifying and wave filtering circuit, non-isolated direct current 15V circuit and direct current 5V circuit.

6. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 4 is characterized in that: described motor drive module is the three-phase bridge drive circuit that power MOSFET tube is formed.

7. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 4 is characterized in that: described signal processing module comprises three-phase back electromotive force circuit, voltage signal change-over circuit and operating current testing circuit.

8. soy bean milk making machine non-brush permanent-magnet DC motor according to claim 7 is characterized in that: described three-phase back electromotive force circuit comprises RC low pass filter and single-chip microcomputer.