CN201113870Y

CN201113870Y - Brushless dc motor system for blower fan coil pipe

Info

Publication number: CN201113870Y
Application number: CNU2007200752367U
Authority: CN
Inventors: 张敏
Original assignee: CHANGZHOU XIANGXING ELECTRIC MACHINE Co Ltd
Current assignee: Changzhou Xiangming Electromotor Co., Ltd.
Priority date: 2007-09-29
Filing date: 2007-09-29
Publication date: 2008-09-10
Anticipated expiration: 2017-09-29

Abstract

The utility model relates to a direct current brushless motor system for fan coils, which comprises a power supply system, a control module, a driving module and a direct current brushless motor. The power supply system comprises an EMC filtering circuit, the filtering circuit is electrically connected with a high-frequency switch module and then is further connected with the control module and the driving module, is electrically connected with a PFC circuit module and then is further connected with the direct current brushless motor, and the control module and the driving module are connected with the direct current brushless motor to control and drive the direct current brushless motor to operate. With the setup, the direct current brushless motor system can effectively decrease the noise.

Description

A kind of fan coil DC brushless motor system

Technical field

The utility model relates to a kind of DC brushless motor system, relates in particular to a kind of fan coil DC brushless motor system.

Background technology

The central air-conditioning end-equipment also is fan coil, typically refer to be installed in interior of building each chamber everywhere, pipeline cold air or hot gas that central air-conditioning is produced send each chamber and equipment everywhere to.In the prior art, the motor that the central air-conditioning end-equipment is used all adopts the single phase alternating current (A.C.) asynchronous motor, and speed regulating method adopts motor windings tap mode, and the rotating speed stepping is many more, and tap is many more.When installing at the scene, easily the wrong line causes motor rotation undesired even burn motor and supply line.In addition, because rotation speed change is to have level to change (being generally three grades), so be difficult to satisfy various of user.Simultaneously, AC asynchronous motor efficient is low, power consumption is big, temperature rise, electromagnetic vibration noise is big, volume is big, consumptive material is many, power consumption is high, and because speed governing difficulty and regulate and control inconvenience and be difficult to make central air-conditioning end-equipment realization team control, automatic control.

How to solve above-mentioned the deficiencies in the prior art, provide a kind of fan coil simple, low noise to become the problem that industry need solve with dc brushless motor.

The utility model content

The technical problem that the utility model solves is at the deficiencies in the prior art, and a kind of fan coil dc brushless motor of simple, low noise is provided.

For addressing the above problem, the utility model provides a kind of fan coil DC brushless motor system, comprise power-supply system, control module, driver module and dc brushless motor, described power-supply system comprises EMC (Electromagnetic compatibility, electromagnetic compatibility) filter circuit, this filter circuit and high-frequency switch module further link to each other with control module and driver module after being electrically connected, above-mentioned filter circuit and with PFC (Power Factor Correction, power factor correction) circuit module further links to each other with dc brushless motor after being electrically connected, and above-mentioned control module links to each other with control with driver module and drives the dc brushless motor running with dc brushless motor.

The utility model also has following technical characterictic: the voltage of exporting after the described HF switch is 5V and 15V; further be connected with the current sense testing circuit between described control module and driver module and dc brushless motor to provide current-limiting protection to above-mentioned dc brushless motor; further be connected with the position sensing testing circuit between described control module and driver module and dc brushless motor to provide rotation-clogging protection to above-mentioned dc brushless motor; described driver module adopts the integrated power module that includes sine pulse width modulation (PWM) (Pulse Width Modulation, pulse width modulation) control.

By said system, on fan coil, use dc brushless motor, can carry out team control and automatic control easily so that its whole system noise is low, simple in structure.

Description of drawings

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

Fig. 1 is the structural representation of a kind of fan coil of the utility model with dc brushless motor.

Fig. 2 is the circuit diagram of a kind of fan coil of the utility model with the power-supply system part of dc brushless motor.

Fig. 3 is the circuit diagram of a kind of fan coil of the utility model with the control module and the driver module part of dc brushless motor.

Embodiment

See also Fig. 1, Fig. 2 and shown in Figure 3, the utility model fan coil DC brushless motor system, it comprises power-supply system (not shown), control module 5, driver module 6 and dc brushless motor 3, described power-supply system comprises EMC filter circuit 1, after being electrically connected, this filter circuit 1 and high-frequency switch module 4 further link to each other with control module 5 and driver module 6, above-mentioned EMC filter circuit 1 and with further link to each other after pfc circuit module 2 is electrically connected with dc brushless motor 3, above-mentioned control module 5 links to each other with dc brushless motor 3 with driver module 6 and turns round with control and driving dc brushless motor.

Please continue to consult Fig. 2 and shown in Figure 3, Fig. 2 is the utility model fan coil brshless DC motor power-supply system part, and the single phase alternating current (A.C.) power frequency supply is a full-wave direct current through the rectification of EMC filter circuit.One the tunnel is required+15V through high frequency switch power generation control and driving power device (MOSFET pipe, IGBT (INSULATED GATE BIPOLAR TRANSISTOR, insulated gate bipolar transistor) or power integrated circuit), the working power of+5V; Another road drives for brshless DC motor through the 385V DC bus-bar voltage of PFC control generation high power factor (COS Φ 〉=0.98).This power circuit part is fixed on the support under the brushless electric machine by shell, does not take other space of fan coil.

Fig. 3 is control module and the driver module of fan coil with brshless DC motor, and control module partly comprises HS (at a high speed), MS (middling speed), and LS (low speed) signal is imported through photoelectric switch; Motor stepless speed regulation signal (0-10V; or PWM speed-regulating signal) also is input to the microprocessor of control module through photoelectric isolating circuit; control rotating speed of motor by microprocessor; microprocessor provides current-limiting protection by the current sense testing circuit to motor; by PTC (PositiveTemperature coefficient; positive temperature coefficient) temperature detection provides the heat protection to motor, provides rotation-clogging protection by the motor position sensing signal to motor.We have adopted up-to-date IPM (the Intelligent Power Module that includes sine pulse width modulation (PWM) control driving and power output part, Intelligent Power Module), it can be deciphered the Brushless DC Motor Position transducing signal, and produces corresponding output, the driving power running.Adopt sinusoidal drive to cooperate motor, greatly degree has reduced the audible noise; Reduced the harmonic current of motor; Reduced the motor torque shake; Promoted the stable motor running degree.We are integrated into motor internal this partial circuit, have cancelled the motor windings lead-in wire, have reduced electromagnetic interference.

The brshless DC motor that adopts integrated sinusoidal drive circuit can also provide perfect defencive function except that general advantage such as energy-conservation.The required average power of rotation-clogging protection only needs about 3W, and stall and not damaging is better than AC blower fan coil pipe motor greatly for a long time, adopts sinusoidal model, and the noise torque pulsation is better than square wave pattern, is the developing direction of fan coil with motor.

Comprehensively above-mentioned, the utility model has been finished the purpose of design of utility model, and a kind of fan coil dc brushless motor of simple, low noise is provided.

Claims

1, a kind of fan coil DC brushless motor system, it is characterized in that: comprise power-supply system, control module, driver module and dc brushless motor, described power-supply system comprises the EMC filter circuit, this filter circuit and high-frequency switch module further link to each other with control module and driver module after being electrically connected, above-mentioned filter circuit and with further link to each other after the pfc circuit module is electrically connected with dc brushless motor, above-mentioned control module links to each other with dc brushless motor with driver module and turns round with control and driving dc brushless motor.

2, fan coil DC brushless motor system as claimed in claim 1 is characterized in that: the voltage of exporting after the described HF switch is 5V and 15V.

3, fan coil DC brushless motor system as claimed in claim 1 is characterized in that: further be connected with the current sense testing circuit between described control module and driver module and dc brushless motor to provide current-limiting protection to above-mentioned dc brushless motor.

4, fan coil DC brushless motor system as claimed in claim 1 is characterized in that: further be connected with the position sensing testing circuit between described control module and driver module and dc brushless motor to provide rotation-clogging protection to above-mentioned dc brushless motor.

5, fan coil DC brushless motor system as claimed in claim 1 is characterized in that: described driver module adopts the integrated power module that includes sine pulse width modulation (PWM) control.