CN201766541U

CN201766541U - Air conditioner motor control circuit

Info

Publication number: CN201766541U
Application number: CN2010202437763U
Authority: CN
Inventors: 徐胜江
Original assignee: Panasonic R&D Center Suzhou Co Ltd
Current assignee: Panasonic R&D Center Suzhou Co Ltd
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-03-16
Anticipated expiration: 2020-06-30

Abstract

The utility model discloses an air conditioner motor control circuit which comprises an AC motor control circuit, a microcomputer controller, a DC control circuit and a DC motor drive power supply, wherein the AC motor control circuit controls the starting or stopping of an AC motor; the microcomputer controller sends out starting and stopping control signals to the AC motor control circuit; the DC control circuit provides control voltage for a DC motor and can adjust the rotational speed of the DC motor; the DC motor drive power supply provides power for the DC motor; and the DC control circuit is connected with the control signal output terminal Port A arranged on the microcomputer controller. The utility model adopting the technical scheme has the beneficial effects that the DC control circuit is additionally arranged so that the air conditioner motor control circuit can utilize one microcomputer controller, namely, one control signal to control the AC motor and the DC motor simultaneously, the air conditioner motor control circuit not only can be used for an air conditioner simultaneously adopting the AC motor and the DC motor, but also can be used for an air conditioner solely adopting either the AC motor or the DC motor; moreover, the air conditioner motor control circuit has very strong compatibility, simple circuit and low cost.

Description

The air-conditioning motor control circuit

Technical field

The utility model relates to air-conditioning equipment, is specifically related to a kind of air-conditioning motor control circuit.

Background technology

The off-premises station of air-conditioning generally need use fan motor at present, some uses alternating current motor, some uses d.c. motor, some can use above-mentioned two breeds of horses to reach as required simultaneously, because cost control reason, alternating current motor employing microcomputerized control solid-state relay break-make is controlled the startup of alternating current motor and is stopped, the efficient of alternating current motor is lower, the more easy-to-use simple circuit of d.c. motor is realized speed governing, therefore under the prerequisite of controlling cost, can obtain the delivery efficiency higher than alternating current motor, but both control circuits are also incompatible at present, therefore need two cover control circuits, can not exchange, use the place of alternating current motor and d.c. motor simultaneously, also be to adopt two cover control circuits, remove to control respectively alternating current motor and d.c. motor by different control signals, cause production cost higher, need be a kind of with low cost, and adopt a control signal can control the control circuit of alternating current motor and d.c. motor simultaneously.

The utility model content

For addressing the above problem, it is a kind of with low cost that the purpose of this utility model is to provide, and adopt a control signal can control the air-conditioning motor control circuit of alternating current motor and d.c. motor simultaneously.

For achieving the above object, the technical solution of the utility model is: a kind of air-conditioning motor control circuit, comprise alternating current motor control circuit that the control alternating current motor starts or stops and the microcomputer controller that sends startup and stop control signal to the alternating current motor control circuit, be included as also that d.c. motor provides the DC control circuit of control voltage and adjustable DC motor rotary speed and for described d.c. motor provides the d.c. motor driving power of power supply, described DC control circuit is connected with the control signal output ends PortA that described microcomputer controller is provided with.

Preferably, be provided with photoelectrical coupler between described microcomputer controller and the described DC control circuit, the input of described photoelectrical coupler is connected with described control signal output ends PortA by a current-limiting resistance R1, and the output of described photoelectrical coupler is serially connected with between a direct current power supply and the described DC control circuit.

Preferably, described DC control circuit comprises by resistance R 2, R3, a bleeder circuit and an electrochemical capacitor C2 that R4 and R5 form, the input of described DC control circuit is that the head end of R2 is connected with the output of described photoelectrical coupler, the tail end of described R2 is connected with the head end of described R3 and R4, the negative pole of the tail end of described R3 and the tail end of described R5 and C2 is connected and is connected with the earth terminal GND of described DC power supply, and the tail end of described R4 is connected with the positive pole of the head end of described R5 and C2 and is connected with the control end Vsp of described d.c. motor as the output of described DC control circuit.

Preferably, described DC control circuit comprises a bleeder circuit and an electrochemical capacitor C2 who is made up of resistance R x and Ry, the input of described DC control circuit is that the head end of Rx is connected with the output of described photoelectrical coupler, the tail end of described Rx is connected with the positive pole of the head end of described Ry and C2, and be connected with the control end Vsp of described d.c. motor as the output of described DC control circuit, the tail end of described Ry is connected with the negative pole of described C2 and is connected with the earth terminal GND of described DC power supply.

Adopt the beneficial effect of the technical program to be: to set up DC control circuit and make that the technical program can be that a control signal is controlled alternating current motor and d.c. motor simultaneously with a microcomputer controller, both can use for the air-conditioning equipment that adopts alternating current motor and d.c. motor simultaneously, have can for single employing wherein a kind of equipment of motor use, has very strong compatibility, circuit is simple, with low cost simultaneously.

Description of drawings

Fig. 1 is the schematic diagram of a kind of air-conditioning motor control circuit of the utility model embodiment 1;

Fig. 2 is the schematic diagram of a kind of air-conditioning motor control circuit of the utility model embodiment 2;

Fig. 3 is the schematic diagram of a kind of air-conditioning motor control circuit of the utility model control timing.

Numeral and the represented corresponding component title of letter among the figure:

1. alternating current motor control circuit 11. alternating current motors 2. microcomputer controllers 31. DC control circuit 32. photoelectrical couplers 33. d.c. motors 35. d.c. motor driving powers

Embodiment

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

Embodiment 1

Among Fig. 1, AC power supplies is AC power, and the AC motor is alternating current motor 11, and the DC motor is d.c. motor 33, IC1 is microcomputer controller 2, FUSE1 is the electric current fuse, and ZNR1 is a piezo-resistance, and SSR1-B is the actuating station of solid-state relay, SSR1-A is the control end of solid-state relay, IC2 is a reverser, and PC1 is photoelectrical coupler 32, and DC motor driven power supply is d.c. motor driving power 35.

As shown in Figure 1, a kind of air-conditioning motor control circuit, comprise alternating current motor control circuit 1 that control alternating current motor 11 starts or stops and the microcomputer controller 2 that sends startup and stop control signal to alternating current motor control circuit 1, be included as also that d.c. motor 33 provides the DC control circuit 31 of control voltage and adjustable DC motor 33 rotating speeds and for d.c. motor 33 provides the d.c. motor driving power 35 of power supply, DC control circuit 31 is connected with the control signal output ends PortA that microcomputer controller 2 is provided with.

Be provided with photoelectrical coupler 32 between microcomputer controller 2 and the DC control circuit 31, the input of photoelectrical coupler 32 is connected with control signal output ends PortA by a current-limiting resistance R1, and the output of photoelectrical coupler 32 is serially connected with between a direct current power supply and the DC control circuit 31.DC control circuit 31 comprises a bleeder circuit and an electrochemical capacitor C2 who is made up of resistance R 2, R3, R4 and R5, the input of DC control circuit 31 is that the head end of R2 is connected with the output of photoelectrical coupler 32, the tail end of R2 is connected with the head end of R3 and R4, the tail end of R3 is connected with the tail end of R5 and C2 and is connected with the earth terminal GND of d.c. motor driving power 35, and the tail end of R4 is connected with the head end of C2 and R5 and is connected with the control end Vsp of d.c. motor 33 as the output of DC control circuit 31.

Operation principle is, when the air-conditioning standby, the PortA of microcomputer controller 2 holds output low level, the control end SSR1-A dead electricity of the solid-state relay that control alternating current motor 11 starts, and SSR1-B disconnects, and alternating current motor 11 is in halted state; Simultaneously, the input of photoelectrical coupler 32 also is a low level, and its output disconnects, DC control circuit 31 dead electricity, and the control input end Vsp of d.c. motor 33 is a low level, d.c. motor 33 is not worked.

When the user starts air-conditioning, the output control terminal PortA of microcomputer controller 2 sends operation or halt instruction according to temperature sensor monitors value and microcomputer internal control program, be PortA end output high level or low level, when operating instruction is that duty ratio Duty is when being 100%, the output control terminal PortA of microcomputer controller 2 exports high level all the time, the control end SSR1-A of the solid-state relay that control alternating current motor 11 starts gets electric, and SSR1-B connects, and alternating current motor 11 starts operation; Simultaneously, the input of photoelectrical coupler 32 also is a high level, and its output is connected, and DC control circuit 31 gets electric, and the control input end Vsp of d.c. motor 33 is a high level, and d.c. motor 33 starts operation.

See Fig. 3, when operating instruction is that duty ratio Duty is when being 10%-90%, in the Ton period, the output control terminal PortA of microcomputer controller 2 exports high level all the time, alternating current motor 11 and d.c. motor 33 move always, in the Toff period, the output control terminal PortA output low level of microcomputer controller 2, alternating current motor 11 and d.c. motor 33 dead electricity, dependence inertia rotates, its rotating speed reduces rapidly, and so Ton period and Toff period replace, the power output of may command alternating current motor 11 and d.c. motor 33.

Change the resistance of R2-R5 in the DC control circuit 31, can change the rotating speed of d.c. motor 33, shown in the dotted line of rotation speed of the fan among Fig. 3.

The circuit of the foregoing description goes for using separately alternating current motor 11 or d.c. motor 33, and alternating current motor 11 and d.c. motor 33 situation about using simultaneously, has good compatibility, and circuit is simple, and is with low cost, meets the needs of production and sales.

Embodiment 2

As shown in Figure 2, all the other are identical with embodiment 1, difference is, bleeder circuit electrochemical capacitor C2 in parallel that DC control circuit 31 is made up of resistance R x and Ry, the input of DC control circuit 31 is that the head end of Rx is connected with the output of photoelectrical coupler 32, the tail end of Rx is connected with the positive pole of the head end of Ry and C2, and be connected with the control end Vsp of d.c. motor 33 as the output of DC control circuit 31, the tail end of Ry is connected with the negative pole of C2 and is connected with the earth terminal GND of d.c. motor driving power 35.

Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.

Claims

1. air-conditioning motor control circuit, comprise alternating current motor control circuit that the control alternating current motor starts or stops and the microcomputer controller that sends startup and stop control signal to the alternating current motor control circuit, it is characterized in that, be included as also that d.c. motor provides the DC control circuit of control voltage and adjustable DC motor rotary speed and for described d.c. motor provides the d.c. motor driving power of power supply, described DC control circuit is connected with the control signal output ends PortA that described microcomputer controller is provided with.

2. air-conditioning motor control circuit as claimed in claim 1, it is characterized in that, be provided with photoelectrical coupler between described microcomputer controller and the described DC control circuit, the input of described photoelectrical coupler is connected with described control signal output ends PortA by a current-limiting resistance R1, and the output of described photoelectrical coupler is serially connected with between a direct current power supply and the described DC control circuit.

3. air-conditioning motor control circuit as claimed in claim 2, it is characterized in that, described DC control circuit comprises by resistance R 2, R3, a bleeder circuit and an electrochemical capacitor C2 that R4 and R5 form, the input of described DC control circuit is that the head end of R2 is connected with the output of described photoelectrical coupler, the tail end of described R2 is connected with the head end of described R3 and R4, the negative pole of the tail end of described R3 and the tail end of described R5 and C2 is connected and is connected with the earth terminal GND of described DC power supply, and the tail end of described R4 is connected with the positive pole of the head end of described R5 and C2 and is connected with the control end Vsp of described d.c. motor as the output of described DC control circuit.

4. air-conditioning motor control circuit as claimed in claim 2, it is characterized in that, described DC control circuit comprises a bleeder circuit and an electrochemical capacitor C2 who is made up of resistance R x and Ry, the input of described DC control circuit is that the head end of Rx is connected with the output of described photoelectrical coupler, the tail end of described Rx is connected with the positive pole of the head end of described Ry and C2, and be connected with the control end Vsp of described d.c. motor as the output of described DC control circuit, the tail end of described Ry is connected with the negative pole of described C2 and is connected with the earth terminal GND of described DC power supply.