CN103375887B - The control circuit of air-conditioner, control method and air-conditioner - Google Patents
The control circuit of air-conditioner, control method and air-conditioner Download PDFInfo
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- CN103375887B CN103375887B CN201210115723.7A CN201210115723A CN103375887B CN 103375887 B CN103375887 B CN 103375887B CN 201210115723 A CN201210115723 A CN 201210115723A CN 103375887 B CN103375887 B CN 103375887B
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Abstract
The invention discloses a kind of control circuit of air-conditioner, control method and air-conditioner.Wherein, the control circuit of air-conditioner comprises: the first switch element, is arranged in the first supply line, for disconnecting when receiving the first cut-off signal, or, the conducting when receiving the first Continuity signal; Second switch unit, is arranged in the second supply line, for disconnecting when receiving the second cut-off signal, or, the conducting when receiving the second Continuity signal; Control unit, is connected with second switch unit respectively with the first switch element.By the present invention, solve the problem that in prior art, the SPM of air-conditioner easily burns out, and then reach the effect in life-span of the SPM improving air-conditioner.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of control circuit of air-conditioner, control method and air-conditioner.
Background technology
In daily life, most of user just no longer extracts after the attaching plug of air-conditioner is inserted socket, and the problem caused like this is, even if user's not using air-condition device, this air-conditioner also can produce stand-by power consumption.Although the stand-by power consumption of an air-conditioner is also little, when most of air-conditioner all produces stand-by power consumption, a large amount of electric power resources can be wasted.Particularly use the air-conditioner of direct current generator, if the air-conditioner of the type is when standby, 310V and the 15V power supply of its direct current generator is still in "on" position, understands power consumption when raising air-conditioner is standby greatly.
Publication number is the application for a patent for invention of CN1987244A, disclose a kind of stand-by electric control device and method thereof of air-conditioner, the power supply of each load of air-conditioner is cut off during to stop driving at air-conditioner, but, technical scheme disclosed in this application for a patent for invention easily burns out intelligent power (Intelligent Power Module the is called for short IPM) module in air-conditioner blower fan when cutting off the power supply of each load of air-conditioner.
In addition, when controlling air-conditioner start, technical scheme of the prior art is when each load controlling air-conditioner powers on, and same existence easily burns out the problem of the SPM in air-conditioner blower fan.
For the problem that the SPM of air-conditioner in correlation technique easily burns out, at present effective solution is not yet proposed.
Summary of the invention
The invention provides a kind of control circuit of air-conditioner, control method and air-conditioner, to solve the problem that in prior art, the SPM of air-conditioner easily burns out.
To achieve these goals, according to an aspect of the present invention, provide a kind of control circuit of air-conditioner, comprising: the first switch element, being arranged in the first supply line, for disconnecting when receiving the first cut-off signal, or, the conducting when receiving the first Continuity signal, wherein, the first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan; Second switch unit, is arranged in the second supply line, for disconnecting when receiving the second cut-off signal, or, the conducting when receiving the second Continuity signal, wherein, the second supply line is the supply line of the drive circuit control voltage of air-conditioner blower fan; Control unit, be connected respectively with second switch unit with the first switch element, the second cut-off signal is sent to second switch unit for the first Preset Time after transmission first cut-off signal to the first switch element, or the second Preset Time sends the second Continuity signal to the first switch element after transmission first Continuity signal to second switch unit.
Further, control unit comprises: the first lead-out terminal, is connected with the first switch element, and for sending the first control signal to the first switch element, wherein, the first control signal comprises the first cut-off signal and the first Continuity signal; And second lead-out terminal, be connected with second switch unit, for sending the second control signal to second switch unit, wherein, the second control signal comprises the second cut-off signal and the second Continuity signal.
Further, the first switch element comprises: relay, and wherein, the contact of relay is arranged in the first supply line; And relay driven element unit, be connected between the first lead-out terminal and the control coil of relay.
Further, relay driven element unit comprises: the first triode, and wherein, the base stage of the first triode is connected with the first lead-out terminal, the grounded emitter of the first triode, and the colelctor electrode of the first triode is connected with the control coil of the first relay; And first resistance, be connected between the base stage of the first triode and the first lead-out terminal.
Further, control circuit also comprises: diode, is connected in parallel on the control coil two ends of relay; Thermistor, is arranged on the live wire of the first supply line; And first resistance, be connected between the base stage of the first triode and the first lead-out terminal.
Further, second switch unit comprises: second switch subelement, is connected between the power supply of drive circuit and drive circuit; Light, every chip, comprises input and output, and wherein, light is connected with the second lead-out terminal every the input of chip, and light is connected with second switch subelement every the output of chip; And light is every chip controls subelement, be connected to light between the input and the second lead-out terminal of chip.
Further, second switch subelement comprises: the second triode, the emitter stage of the second triode is connected with the power supply of drive circuit, and the colelctor electrode of the second triode is connected with drive circuit, and the base stage of the second triode is connected with the output of light every chip; Second resistance, is connected between the power supply of drive circuit and the base stage of the second triode; And the 3rd resistance, be connected to the base stage of the second triode and light between the output of chip.
Further, second switch subelement also comprises: the 4th resistance, is connected between the emitter stage of the second triode and the colelctor electrode of the second triode.
Further, light comprises every chip controls subelement: the 3rd triode, and the emitter stage of the 3rd triode is connected with the first input end of light every chip, and the base stage of the 3rd triode is connected with the second lead-out terminal, the grounded collector of the 3rd triode; 4th resistance, between the base stage being connected to the 3rd triode and the second lead-out terminal; And the 5th resistance, be connected to light between second input and dc source of chip, wherein, dc source is used for for light is every chip power supply.
To achieve these goals, according to a further aspect in the invention, provide a kind of control method of air-conditioner, comprise: send the first cut-off signal to the first switch element be arranged in the first supply line or send the first Continuity signal to the second switch unit be arranged in the second supply line, wherein, first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan, and the second supply line is the supply line of the drive circuit control voltage of air-conditioner blower fan; And the first Preset Time sends the second cut-off signal to second switch unit after transmission first cut-off signal to the first switch element, or the second Preset Time after transmission first Continuity signal to second switch unit sends the second Continuity signal to the first switch element.
Further, the first Preset Time is greater than the second Preset Time.
To achieve these goals, according to a further aspect in the invention, provide a kind of air-conditioner, comprise the control circuit of any one air-conditioner that foregoing of the present invention provides.
Pass through the present invention, adopt the control circuit comprising following structure: the first switch element, be arranged in the first supply line, for disconnecting when receiving the first cut-off signal, or, the conducting when receiving the first Continuity signal, wherein, the first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan, second switch unit, is arranged in the second supply line, for disconnecting when receiving the second cut-off signal, or, the conducting when receiving the second Continuity signal, wherein, the second supply line is the supply line of drive circuit control voltage, control unit, be connected respectively with second switch unit with the first switch element, the second cut-off signal is sent to second switch unit for the first Preset Time after transmission first cut-off signal to the first switch element, or, after transmission first Continuity signal to second switch unit, the second Preset Time sends the second Continuity signal to the first switch element, disconnect by controlling to control second switch unit again after the first switch element disconnects, the supply line achieving the operating voltage controlling air-conditioner fan drive circuit disconnected before the supply line of control voltage, the first switching means conductive is controlled again after controlling second switch cell conduction, achieve supply line's conducting before the supply line of the operating voltage of fan drive circuit of the control voltage controlling air-conditioner fan drive circuit, achieve the SPM in protection drive circuit, avoid the drawback that air-conditioner SPM repeats conducting, solve the problem that in prior art, the SPM of air-conditioner easily burns out, and then reach the effect in life-span of the SPM improving air-conditioner.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the first connection diagram of control circuit according to the embodiment of the present invention and blower fan;
Fig. 2 is the second connection diagram of control circuit according to the embodiment of the present invention and blower fan;
Fig. 3 is the physical circuit figure according to the first switch element of the control circuit of the embodiment of the present invention and the power supply circuits of drive circuit works voltage;
Fig. 4 is the physical circuit figure of the second switch unit of control circuit according to the embodiment of the present invention;
Fig. 5 is the flow chart of the control method according to the embodiment of the present invention;
Fig. 6 carries out according to the control method of the embodiment of the present invention schematic diagram that air-conditioner start controls and shutdown controls; And
Fig. 7 is the flow chart according to the start of air-conditioner or the control method of the shutdown command execution embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of control circuit of air-conditioner, Fig. 1 is the first connection diagram of control circuit according to the embodiment of the present invention and blower fan, as shown in Figure 1, in this embodiment, control circuit comprises the first switch element 10, second switch unit 20 and control unit 30.
Wherein, first switch element 10 is arranged in the supply line of drive circuit works voltage of air-conditioner blower fan, second switch unit 20 is arranged in the supply line of drive circuit control voltage of air-conditioner blower fan, wherein, first switch element 10 receives when sending to the cut-off signal of the first switch element 10 and disconnects with the supply line's open circuit making fan drive circuit operating voltage, first switch element 10 receives conducting when sending to the Continuity signal of the first switch element 10 and is communicated with to make the supply line of fan drive circuit control voltage, second switch unit 20 receives conducting when sending to the Continuity signal of second switch unit 20 and is communicated with to make the supply line of fan drive circuit control voltage, second switch unit 20 receives when sending to the cut-off signal of second switch unit 20 and disconnects to make the supply line of fan drive circuit operating voltage disconnect, control unit 30 is for sending Continuity signal and cut-off signal to the first switch element 10 and second switch unit 20, particularly, control unit 30 first can send the first cut-off signal to the first switch element 10, then the second cut-off signal is sent after experiencing the first Preset Time to second switch unit 20, also first can send the first Continuity signal to second switch unit 20, after then experiencing the second Preset Time, send the second Continuity signal to the first switch element 10.Wherein, the first Preset Time and the second Preset Time can be arranged according to specific needs, and can be 2 minutes with the first Preset Time in this embodiment, the second Preset Time be illustrated 2 seconds.
For air-conditioner, the principal element affecting its SPM life-span is the unreasonable control of two power supplies of air-conditioner fan drive circuit, these two power supplies are the power supply of fan drive circuit operating voltage and the power supply of fan drive circuit control voltage respectively, be respectively 310V power supply and 15V power supply, when air-conditioning normally works, all be in conducting state to the 310V that DC fan is powered, 15V power supply, air-conditioning normally works.15V power supply is powered to the metal-oxide-semiconductor grid inside IPM module, and 310V power supply is to metal-oxide-semiconductor drain electrode power supply, and DC fan runs well.When DC fan shuts down, if 310V and 15V power supply disconnects, or 15V first cuts off, then cuts off 310V simultaneously, namely there will be following situation: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ends, grid and drain electrode are in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also there will be very high voltage, make metal-oxide-semiconductor repeat conducting, the time has been grown and namely can cause damage to metal-oxide-semiconductor.When air-conditioning enters normal operating conditions by holding state, if 310V and 15V of DC fan conducting simultaneously or 310V first pass through, namely there will be following situation: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ends, grid and drain electrode are in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also there will be very high voltage, make metal-oxide-semiconductor repeat conducting, the time has been grown and can cause damage to metal-oxide-semiconductor equally.And the control circuit of this embodiment is under air-conditioning enters holding state by normal operating conditions, control unit 30 first cuts off to the 310V power supply of DC fan drive circuitry, cut off after 2 minutes to the 15V power supply of DC fan drive circuitry, now operation of air conditioner is under low standby power loss pattern again; When air-conditioner controller carries out normal operating conditions by holding state, first conducting 15V power supply, after 2 seconds, that is, after 15V power good, then conducting 310V power supply.Wherein, Fig. 2 shows the control circuit of the another kind of embodiment of the present invention and the connection diagram of blower fan, figure 2 illustrates the IPM module in drive circuit, 15V power supply and 310V power supply.
The control circuit of this embodiment disconnects by controlling second switch unit 20 again after the disconnection of control first switch element 10, the supply line achieving the drive circuit works voltage controlling air-conditioner blower fan disconnected before the supply line of fan drive circuit control voltage, the first switch element 10 conducting is controlled again after controlling the conducting of second switch unit 20, achieve the supply line's conducting before the supply line of fan drive circuit operating voltage controlling air-conditioner fan drive circuit control voltage, achieve the SPM in protection drive circuit, avoid the drawback that air-conditioner SPM repeats conducting, solve the problem that in prior art, the SPM of air-conditioner easily burns out, and then reach the effect in life-span of the SPM improving air-conditioner.Simultaneously, by when air-conditioner is standby, the supply line of the supply line and fan drive circuit control voltage that control fan drive circuit operating voltage all disconnects, and achieves and reduces air-conditioner stand-by power consumption, the extra power consumption of reduction air-conditioner, reach the effect of energy saving.
Further, the physical circuit connection layout of the first switch element 10 provided in embodiment of the present invention control circuit can be illustrated by Fig. 3, Fig. 3 is the physical circuit figure according to the first switch element of the control circuit of the embodiment of the present invention and the power supply circuits of fan drive circuit operating voltage, as shown in Figure 3, first switch element 10 is primarily of relay K 4, triode Q20, resistance R1 and diode D9 forms, wherein, the first end of resistance R1 is connected with the DC-CONTROL lead-out terminal of control unit, second end of resistance R1 is connected with the base stage of triode Q20, the grounded emitter of triode Q20, the colelctor electrode of triode Q20 is connected with the control coil of relay K 4, diode D9 is fly-wheel diode, be connected in parallel on the two ends of the control coil of relay K 4, for the protection of relay K 4, the switch contact of relay K 4 is arranged in the supply line of fan drive circuit operating voltage 310V (shown in Fig. 3 is on the zero line that arranges), in this embodiment, control unit can be the master integrated circuit (IntegratedCircuit of air-conditioner, be called for short IC), when air-conditioning normally works, main IC " DC-CONTROL " pin exports high level, triode Q20 conducting, relay K 4 is in closure state, now rectifier bridge DB2 normally works, electric capacity C216 is charged to 310V, to give DC fan drive circuit for work electricity, electric capacity C36 can carry out rectifying and wave-filtering to 310V, when air-conditioning work is at holding state, main IC " DC-CONTROL " pin output low level, triode Q20 ends, and relay K 4 is in off-state, and now rectifier bridge DB2 quits work, electric capacity C216 is owing to can not get charging, and there is discharge resistance R93, R95, R96, R97 does not stop the electricity consuming electric capacity C216 storage, makes the voltage of electric capacity C216 drop to zero very soon.Because rectifier bridge input is alternating current, voltage effective value is about 220V, and rectification bridge output end is direct current, voltage effective value is about 310V, therefore safer than controlling DC terminal with Control rectifier bridge input, also lower to the requirement of relay, wherein, RNTC2 is thermistor, by arranging thermistor on the live wire of the supply line of fan drive circuit operating voltage, can fall the impact of Low Drift Temperature circuit.
The physical circuit figure of the second switch unit 20 provided in embodiment of the present invention control circuit can be illustrated by Fig. 4, Fig. 4 is the physical circuit figure of the second switch unit of control circuit according to the embodiment of the present invention, as shown in Figure 4, second control unit 20 mainly contains triode Q10, triode Q11, light is every chip U5 and resistance R4, R5, R8, R10 and R13 forms, wherein, the base stage of triode Q11 is connected with the lead-out terminal CONRTONL of main IC by resistance R10, the colelctor electrode of triode Q10 is connected with fan drive circuit, when air-conditioning normally works, main IC " CONRTONL " pin output low level, triode Q11 conducting, light is equivalent to ground connection every " 2 " pin of chip U5, make light every chip U5 conducting, when light is every chip U5 conducting, its the 3rd pin and the 4th pin are equivalent to short circuit, voltage U 1=15/ (5100+2700) * 2700=5.19V between such R4 and R5 (wherein, the resistance of R4 and R5 is respectively 5100 ohm, 2700 ohm), because the BE extreme pressure difference of triode Q10 is greater than 0.7V, triode Q10 conducting, 15V voltage is powered to DC fan by the CE pole of triode.When air-conditioning enters holding state, main IC " CONRTONL " pin exports high level, triode Q11, light is in cut-off state every chip U5, the B pole of such triode Q10 and the extremely same current potential of E, triode Q10 is also in cut-off state, and 15V cannot be powered to DC fan by triode Q10.Wherein, the effect of each components and parts is respectively:
R10: current-limiting resistance;
Q11: control light and make it be in conducting or cut-off state every chip U5;
U5: control triode Q10 and make it be in conducting or cut-off state;
R4, R5: divider resistance, make light when chip conducting, and B, E pole of triode Q10 forms the pressure reduction being greater than 0.7V;
Q10: during conducting, 15V voltage, to the drive circuitry of DC fan, during cut-off, cuts off to the 15V power supply of DC fan drive circuitry;
R8: reserved resistance, uses during test.
The control circuit of the embodiment of the present invention shown in Fig. 3 and Fig. 4 controls every the electric power thus supplied of chip to blower fan mainly through relay, triode and light, control circuit compared to existing technology, the element increased has: one, 5A relay, three, triode, light are every chip one and Chip-R, cost increase is almost negligible compared with the control mainboard of existing air-conditioner, so the control circuit of the embodiment of the present invention reaches the effect in the life-span of the SPM improving air-conditioner while not increasing air-conditioner cost.
The embodiment of the present invention additionally provides a kind of control method of air-conditioner, the control circuit that this control method can be provided by the embodiment of the present invention performs, Fig. 5 is the flow chart of the control method according to the embodiment of the present invention, as shown in Figure 5, the control method of this embodiment comprises step S502 to step S504.
S502: send the first cut-off signal to the first switch element be arranged in the first supply line or send the first Continuity signal to the second switch unit be arranged in the second supply line.Wherein, first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan, second supply line is the supply line of fan drive circuit control voltage, when needs control air-conditioner transfers holding state to from open state, then send the first cut-off signal to the first switch element, first switch element disconnects the supply line of blower fan when receiving the first cut-off signal, when needs control air-conditioner transfers open state to from holding state, then send the first Continuity signal to second switch unit, the supply line of conducting fan drive circuit when second switch unit receives the first Continuity signal.
S504: the first Preset Time sends the second cut-off signal to second switch unit after transmission first cut-off signal to the first switch element, or the second Preset Time after transmission first Continuity signal to second switch unit sends the second Continuity signal to the first switch element, wherein, when needs control air-conditioner transfers holding state to from open state, then step S502 is transmission first cut-off signal to the first switch element, now, step S504 then after transmission first cut-off signal to the first switch element the first Preset Time send the second cut-off signal to second switch unit, second switch unit disconnects the supply line of fan drive circuit after receiving the second cut-off signal, when needs control air-conditioner transfers open state to from holding state, then step S502 is that transmission first Continuity signal is to second switch unit, now, step S504 then after transmission first Continuity signal to second switch unit the second Preset Time send the second Continuity signal to the first switch element, the first switch element receives the supply line of conducting blower fan after the second Continuity signal.Wherein, the first Preset Time and the second Preset Time can be arranged according to specific needs, and can be 2 minutes with the first Preset Time in this embodiment, the second Preset Time be illustrated 2 seconds.
For air-conditioner, the principal element affecting its SPM life-span is the unreasonable control of two power supplies of air-conditioner fan drive circuit, these two power supplies are the power supply of fan drive circuit operating voltage and the power supply of fan drive circuit control voltage respectively, be respectively 310V power supply and 15V power supply, when air-conditioning normally works, all be in conducting state to the 310V that DC fan is powered, 15V power supply, air-conditioning normally works.15V power supply is powered to the metal-oxide-semiconductor grid inside IPM module, and 310V power supply is to metal-oxide-semiconductor drain electrode power supply, and DC fan runs well.When DC fan shuts down, if 310V and 15V power supply disconnects, or 15V first cuts off, then cuts off 310V simultaneously, namely there will be following situation: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ends, grid and drain electrode are in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also there will be very high voltage, make metal-oxide-semiconductor repeat conducting, the time has been grown and namely can cause damage to metal-oxide-semiconductor.When air-conditioning enters normal operating conditions by holding state, if 310V and 15V of DC fan conducting simultaneously or 310V first pass through, namely there will be following situation: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ends, grid and drain electrode are in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also there will be very high voltage, make metal-oxide-semiconductor repeat conducting, the time has been grown and can cause damage to metal-oxide-semiconductor equally.
And the control method of this embodiment is under air-conditioning enters holding state by normal operating conditions, control unit 30 first cuts off to the 310V power supply of DC fan drive circuit works power voltage supply, cut off the 15V power supply of powering to DC fan drive circuit control voltage after 2 minutes again, now operation of air conditioner is under low standby power loss pattern; When air-conditioner controller carries out normal operating conditions by holding state, first conducting 15V power supply, after 2 seconds, that is, after 15V power good, then conducting 310V power supply.Concrete control flow as shown in Figure 6.
The control method of the embodiment of the present invention disconnects by controlling second switch unit again after the disconnection of control first switch element, the supply line achieving the operating voltage controlling air-conditioner fan drive circuit disconnected before the supply line of control voltage, the first switching means conductive is controlled again after controlling second switch cell conduction, achieve supply line's conducting before the supply line of the operating voltage of drive circuit of the control voltage controlling air-conditioner fan drive circuit, achieve the SPM in protection drive circuit, avoid the drawback that air-conditioner SPM repeats conducting, solve the problem that in prior art, the SPM of air-conditioner easily burns out, and then reach the effect in life-span of the SPM improving air-conditioner.Simultaneously, by when air-conditioner is standby, the supply line of the supply line and fan drive circuit control voltage that control fan drive circuit operating voltage all disconnects, and achieves and reduces air-conditioner stand-by power consumption, the extra power consumption of reduction air-conditioner, reach the effect of energy saving.
Further, can judging whether air-conditioner transfers holding state to from duty (open state) according to whether receiving shutdown command in the control method of the embodiment of the present invention, judging whether air-conditioner transfers open state (duty) to from holding state according to whether receiving start-up command.Idiographic flow as shown in Figure 7.
In addition, the embodiment of the present invention additionally provides a kind of air-conditioner, this air-conditioner can be the air-conditioner of the control circuit with any one air-conditioner that the embodiment of the present invention provides, and also can be the air-conditioner of the control method of the air-conditioner adopting the embodiment of the present invention to provide.
As can be seen from the above description, invention achieves the life-span of SPM of improving air-conditioner and the effect of energy saving.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a control circuit for air-conditioner, is characterized in that, comprising:
First switch element, is arranged in the first supply line, for disconnecting when receiving the first cut-off signal, or, the conducting when receiving the first Continuity signal, wherein, described first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan;
Second switch unit, is arranged in the second supply line, for disconnecting when receiving the second cut-off signal, or, the conducting when receiving the second Continuity signal, wherein, described second supply line is the supply line of the drive circuit control voltage of described air-conditioner blower fan;
Control unit, be connected respectively with second switch unit with described first switch element, described second cut-off signal is sent to second switch unit for the first Preset Time after described first cut-off signal to the first switch element of transmission, or the second Preset Time sends described second Continuity signal to described first switch element after transmission described first Continuity signal to described second switch unit.
2. control circuit according to claim 1, is characterized in that, described control unit comprises:
First lead-out terminal, is connected with described first switch element, and for sending the first control signal to described first switch element, wherein, described first control signal comprises described first cut-off signal and described first Continuity signal; And
Second lead-out terminal, is connected with described second switch unit, and for sending the second control signal to described second switch unit, wherein, described second control signal comprises described second cut-off signal and described second Continuity signal.
3. control circuit according to claim 2, is characterized in that, described first switch element comprises:
Relay, wherein, the contact of described relay is arranged in described first supply line; And
Relay driven element unit, is connected between described first lead-out terminal and the control coil of described relay.
4. control circuit according to claim 3, is characterized in that, described relay driven element unit comprises:
First triode, wherein, the base stage of described first triode is connected with described first lead-out terminal, the grounded emitter of described first triode, and the colelctor electrode of described first triode is connected with the control coil of the first relay; And
First resistance, is connected between the base stage of described first triode and described first lead-out terminal.
5. control circuit according to claim 4, is characterized in that, described control circuit also comprises:
Diode, is connected in parallel on the control coil two ends of described relay;
Thermistor, is arranged on the live wire of described first supply line; And
First resistance, is connected between the base stage of described first triode and described first lead-out terminal.
6. control circuit according to claim 2, is characterized in that, described second switch unit comprises:
Second switch subelement, is connected between the power supply of described drive circuit and described drive circuit;
Light, every chip, comprises input and output, and wherein, described light is connected with described second lead-out terminal every the input of chip, and described light is connected with described second switch subelement every the output of chip; And
Light, every chip controls subelement, is connected to described light between the input and described second lead-out terminal of chip.
7. control circuit according to claim 6, is characterized in that, described second switch subelement comprises:
Second triode, the emitter stage of described second triode is connected with the power supply of described drive circuit, and the colelctor electrode of described second triode is connected with described drive circuit, and the base stage of described second triode is connected with the output of described light every chip;
Second resistance, is connected between the power supply of described drive circuit and the base stage of described second triode; And
3rd resistance, is connected to the base stage of described second triode and described light between the output of chip.
8. control circuit according to claim 7, is characterized in that, described second switch subelement also comprises:
4th resistance, is connected between the emitter stage of described second triode and the colelctor electrode of described second triode.
9. control circuit according to claim 6, is characterized in that, described light comprises every chip controls subelement:
3rd triode, the emitter stage of described 3rd triode is connected with the first input end of described light every chip, and the base stage of described 3rd triode is connected with described second lead-out terminal, the grounded collector of described 3rd triode;
4th resistance, between the base stage being connected to described 3rd triode and described second lead-out terminal; And
5th resistance, is connected to described light between second input and dc source of chip, and wherein, described dc source is used for for described light is every chip power supply.
10. a control method for air-conditioner, is characterized in that, described method comprises:
Send the first cut-off signal to the first switch element be arranged in the first supply line or send the first Continuity signal to the second switch unit be arranged in the second supply line, wherein, described first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan, and described second supply line is the supply line of the drive circuit control voltage of described air-conditioner blower fan; And
After transmission described first cut-off signal to described first switch element, the first Preset Time sends the second cut-off signal to described second switch unit, or the second Preset Time after transmission described first Continuity signal to described second switch unit sends the second Continuity signal to described first switch element.
11. control methods according to claim 10, is characterized in that, described first Preset Time is greater than described second Preset Time.
12. 1 kinds of air-conditioners, is characterized in that, comprise the control circuit of the air-conditioner according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210115723.7A CN103375887B (en) | 2012-04-18 | 2012-04-18 | The control circuit of air-conditioner, control method and air-conditioner |
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| CN105186845B (en) * | 2015-09-29 | 2018-07-03 | 海信（山东）空调有限公司 | A kind of circuit and method for controlling IPM |
| CN109253103A (en) * | 2018-09-13 | 2019-01-22 | 奥克斯空调股份有限公司 | A kind of fan drive circuit, fan drive device and air conditioner |
| CN111343065B (en) * | 2020-03-03 | 2021-07-23 | 广东美的暖通设备有限公司 | Communication electric appliance and air conditioner |
| CN111780381B (en) * | 2020-06-01 | 2021-08-03 | 珠海格力电器股份有限公司 | Fan control method and device and air conditioner external unit |
| CN112947170B (en) * | 2021-02-02 | 2024-04-12 | 宁波奥克斯电气股份有限公司 | Double-fan control circuit and air conditioner |
| CN115095963B (en) * | 2022-08-26 | 2022-11-29 | 北京环都拓普空调有限公司 | Self-adaptive fresh air system adjusting method and corresponding fresh air system |
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