CN2403177Y

CN2403177Y - Motor for fan

Info

Publication number: CN2403177Y
Application number: CN99248410U
Authority: CN
Inventors: 洪银农
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1999-10-12
Filing date: 1999-10-12
Publication date: 2000-10-25
Anticipated expiration: 2009-10-12

Abstract

The utility model relates to a motor for fans. A stator coil of the utility model is composed of a single set of coils; the single set of the coils can be triggered by the control of interactive circuits, forward and reverse currents can be switched on with intervals, alternating magnetic fields are formed, and the motor which is driven rotates. In addition, a control circuit can be formed by that a protection circuit is arranged in the interactive circuits, and the motor and circuit elements can be carried out superheating and overladen protection by the protection circuit; in addition, a locking circuit and a frequency dividing circuit can be arranged, so the utility model can simultaneously has the functions of locking circuit and diving frequencies.

Description

Fan motor

The utility model relates to a kind of fan motor, refers to a kind of radiator fan motor of ultra-thin short and small type especially.

Existing fan motor can make motor itself produce very high temperature when long-time the use, some circuit elements in the motor or itself just might be burnt so owing to temperature overheating, thus cause damage to the user.In addition, because the complete control circuit of existing fan motor neither one makes its each device running each other can not unify control well and coordinate.And the general volume of existing motor is all bigger, uses very inconvenience.

For addressing the above problem, main purpose of the present utility model provides a kind of fan motor, and this fan motor not only volume is reduced to minimum, and has more and prevent that motor or circuit element from burning, pinning outage and multiple function such as frequency division.

For achieving the above object, the utility model provides a kind of fan motor, and it comprises motor stator coil and control circuit; This motor stator coil is made up of single group coil, and this single group coil contains two contacts that are subjected to mutual circuit control, and this two contact is drawn from mutual circuit; The mutual circuit, one that this control circuit comprises a control coil forward and reverse conduction makes motor rotor can carry out voltage ratio with the electric capacity of control locked loop because of the locked loop that pins outage and shut down, comparison circuit and that the mutual circuit of a control shuts down motor; Wherein, this mutual circuit comprises several transistors and is connected to coil, and this locked loop is connected to this mutual circuit, and the output of this comparison circuit is connected to this locked loop, and this electric capacity is connected to this comparison circuit.Described control circuit comprises a superheater in addition, and this superheater is a temperature sensitive member and is connected to locked loop.Described control circuit can be made into an IC wafer.It also comprises the Hall unit of this control circuit of control.Described control circuit and this Hall unit can be integrated and make an IC wafer.It also comprises a frequency dividing circuit that makes control circuit tool division function, and this frequency dividing circuit is connected to mutual circuit.

Motor stator coil composition of the present utility model is the design of drive circuit at existing single group coil, and only need draw two contacts, and this two contact is controlled by mutual circuit, forms the forward and reverse conduction of positive and negative electrode.In addition, this mutual circuit can cooperate locked loop, overheating protection circuit or frequency dividing circuit again, makes the control circuit of this radiator fan motor have functions such as the outage of pinning and frequency division.But this control circuit nationality is designed to a minimum IC wafer by semiconductor technology, makes the volume of fan motor be reduced to minimum and have multiple function.In addition, but the also application circuit of mating protection motor in this circuit, for example: add protective circuit, pin power-down circuit and frequency dividing circuit, make fan motor have the motor of preventing or circuit element burns, pins and cuts off the power supply and multiple function such as frequency division.

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

Fig. 1 is the circuit structure diagram of the utility model first embodiment;

Fig. 2 is the circuit diagram of the utility model second embodiment;

Fig. 3 is the functional block diagram of the utility model the 3rd embodiment.

Please refer to shown in Figure 1, this is the circuit structure diagram of the utility model first embodiment, show among the figure that the utility model mainly comprises a control circuit 10, a Hall unit 20 and a motor coil 30, wherein this control circuit comprises a mutual circuit 11, a locked loop 12, a superheater 13, an electric capacity 14, a comparison circuit 15 and a logical operation loop 16.

This Hall unit 20 is connected to logical operation loop 16 with this mutual circuit 11 of control through an operational amplifier, and this mutual circuit 11 comprises the forward and reverse conduction of several transistors with control motor coil 30, and wherein this motor coil 30 is the single group coil structure.This mutual circuit 11 also is connected to locked loop 12, this locked loop 12 then is connected to comparison circuit 15, wherein this comparison circuit 15 is connected to electric capacity 14 and this comparison circuit 15 comprises two operational amplifiers 151,152 and several diodes 153, and wherein the negative terminal of this operational amplifier 152 connects the comparative voltage of four diodes 153 as these electric capacity 14 charging voltages.When Hall unit 20 is output as high potential; this electric capacity 14 charges; if these electric capacity 14 charging voltages are greater than the total voltage of these four diodes; then operational amplifier 152 outputs control signals to this locked loop 12 through voltage ratio after, makes these locked loop 12 actions and then this mutual circuit 11 of control make the motor rotor formation power-off protection that shuts down.

In addition; this superheater 13 is a temperature sensitive member; it is connected to locked loop 12; when the temperature of IC wafer overloads; then this superheater 13 outputs signal to this locked loop 12; control this mutual circuit 11 and motor rotor is shut down avoid IC wafer or circuit element to burn, and then make circuit have the function of overtemperature protection.

Please refer to shown in Figure 2, this is the circuit diagram of the utility model second embodiment, wherein this mutual circuit 40 is identical with the mutual circuit of existing motor control single group coil, but it comprises a frequency dividing circuit 41, a Hall unit 42 and a motor coil 43 in addition, wherein this motor coil 43 is existing single group coil structure, and Hall unit 42 is in order to control mutual circuit 40.In addition, this frequency dividing circuit 41 can be integrated and be set as a frequency division IC, this frequency dividing circuit 41 can use the Hall unit (Hall IC) of multipole number (as: sextupole, the ends of the earth, ten utmost points, 12 utmost points etc.) the Brushless DC motor fan of non-four utmost points, or the output signal frequency division of mutual circuit 40 is converted to square wave output, utilize the frequency division multiple to select the setting of pin S0, S1 to select different frequency division multiples, this multiple can be complied with different Demand Design.In addition; this frequency dividing circuit 41, mutual circuit 40 and Hall unit 42 also can cooperate other application circuit design; be integrated into a multi-functional IC wafer; as shown in Figure 3; make this radiator fan motor not only ultra-thin short and small and have more back-up frequently, pin multiple functions such as outage and overtemperature protection, also can cooperate other motor applications circuit to make this radiator fan motor function more powerful in addition.

Please refer to shown in Figure 3, this is a most preferred embodiment of the present utility model, it comprises an integration frequency division, pins IC wafer 50, a Hall unit 60 and the motor coil 70 of functions such as outage, wherein this motor coil 70 is the single group coil structure in the utility model, and wherein this IC wafer 50 comprises a drive unit 51, a tachogenerator 52, a locking detector arrangement 53, reaches a logical operation module 54.Wherein this drive unit 51 is controlled the forward and reverse conduction of motor coils 70, this locking detector arrangement 53 is formed the function that provides motor of the present utility model to have the outage of pinning by the pinning power-down circuit, and this tachogenerator 52 is made up of frequency dividing circuit so that motor of the present utility model has division function.In addition, the signal that this logical operation module 54 receives tachogenerator 52 and locking detector arrangement 53 carries out logical operation and then accessory drive 51, makes motor coil do different drive manners because of different control signals.

In sum, control circuit of the present utility model, the application circuit of mating protection motor again; its Integration Design is become a single IC wafer; not only make the single group coil structural volume littler, more can cooperate the design of IC wafer, make motor have more function with on the industry of being applied in.

The above only is several preferred embodiment of the present utility model, is not to be used to limit the utility model.

Claims

1, a kind of fan motor is characterized in that: it comprises motor stator coil and control circuit; This motor stator coil is made up of single group coil, and this single group coil contains two contacts that are subjected to mutual circuit control, and this two contact is drawn from mutual circuit; The mutual circuit, one that this control circuit comprises a control coil forward and reverse conduction makes motor rotor can carry out voltage ratio with the electric capacity of control locked loop because of the locked loop that pins outage and shut down, comparison circuit and that the mutual circuit of a control shuts down motor; Wherein, this mutual circuit comprises several transistors and is connected to coil, and this locked loop is connected to this mutual circuit, and the output of this comparison circuit is connected to this locked loop, and this electric capacity is connected to this comparison circuit.

2, fan motor according to claim 1 is characterized in that: described control circuit comprises a superheater in addition, and this superheater is a temperature sensitive member and is connected to locked loop.

3, according to claim 1 or 2 described fan motors, it is characterized in that: described control circuit can be made into an IC wafer.

4, fan motor according to claim 1 is characterized in that: it also comprises the Hall unit of this control circuit of control.

5, according to claim 1 or 4 described fan motors, it is characterized in that: described control circuit and this Hall unit can be integrated and make an IC wafer.

6, according to the described fan motor of claim 1 Xu, it is characterized in that: it also comprises a frequency dividing circuit that makes control circuit tool division function, and this frequency dividing circuit is connected to mutual circuit.