CN103375887A - Air conditioner, and control circuit and control method thereof - Google Patents
Air conditioner, and control circuit and control method thereof Download PDFInfo
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- CN103375887A CN103375887A CN2012101157237A CN201210115723A CN103375887A CN 103375887 A CN103375887 A CN 103375887A CN 2012101157237 A CN2012101157237 A CN 2012101157237A CN 201210115723 A CN201210115723 A CN 201210115723A CN 103375887 A CN103375887 A CN 103375887A
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Abstract
The invention discloses an air conditioner, a control circuit and a control method thereof. The control circuit of the air conditioner comprises a first switch unit, a second switch unit and a control unit, wherein the first switch unit is arranged on a first power supply circuit and used for switching off when receiving a first switch-off signal or switching on when receiving a first switch-on signal, the second switch unit is arranged on a second power supply circuit and is used for switching off when receiving a second switch-off signal or switching on when receiving a second switch-on signal, and the control unit is connected with the first switch unit and the second switch unit respectively. The problem that an intelligent power module of the air conditioner in the prior art is prone to being burnt out is solved, and the service life of the intelligent power module of the air conditioner is prolonged.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of control circuit, control method and air-conditioner of air-conditioner.
Background technology
In the daily life, just no longer extract behind the attaching plug insertion socket of most of users with air-conditioner, a problem that causes like this is that even the user does not use air-conditioner, 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-conditioners all produce stand-by power consumption, can waste a large amount of electric power resources.Particularly use the air-conditioner of direct current generator, if the air-conditioner of the type when standby, the 310V of its direct current generator and 15V power supply still are in "on" position, the power consumption in the time of can greatly improving the air-conditioner standby.
Publication number is the application for a patent for invention of CN1987244A, a kind of stand-by electric control device and method thereof of air-conditioner are disclosed, when air-conditioner stops to drive, to cut off the power supply of each load of air-conditioner, but, the disclosed technical scheme of this application for a patent for invention burns out intelligent power (Intelligent Power Module the is called for short IPM) module in the air-conditioner blower fan easily when cutting off the power supply of each load of air-conditioner.
In addition, when the start of control air-conditioner, when technical scheme of the prior art powered in each load of control air-conditioner, same existence burnt out the problem of the SPM in the air-conditioner blower fan easily.
Problem for the SPM of air-conditioner in the correlation technique burns out easily not yet proposes effective solution at present.
Summary of the invention
The invention provides a kind of control circuit, control method and air-conditioner of air-conditioner, the problem that burns out easily with the SPM that solves air-conditioner in the prior art.
To achieve these goals, according to an aspect of the present invention, a kind of control circuit of air-conditioner is provided, comprise: the first switch element, be arranged in the first supply line, be used for when receiving the first cut-off signal, disconnecting, perhaps, 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; The second switch unit is arranged in the second supply line, is used for when receiving the second cut-off signal, disconnecting, perhaps, and 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 module, be connected respectively with the second switch unit with the first switch element, send the second cut-off signal to the second switch unit for the first Preset Time after sending the first cut-off signal to the first switch element, perhaps, send the second Continuity signal to the first switch element at transmission the first Continuity signal second Preset Time to the second switch unit.
Further, control module comprises: the first lead-out terminal, be connected with the first switch element, and be used 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 the second switch unit, be used for sending the second control signal to the 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 control coil of the first lead-out terminal and 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, 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 and the first lead-out terminal of the first triode.
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 and the first lead-out terminal of the first triode.
Further, the second switch unit comprises: the second switch subelement is connected between the power supply and drive circuit of drive circuit; Light comprises input and output every chip, and wherein, light is connected with the second lead-out terminal every the input of chip, and light is connected with the second switch subelement every the output of chip; And light is connected to light between the input and the second lead-out terminal of chip every the chip controls subelement.
Further, the 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; The second resistance is connected between the base stage of the power supply of drive circuit and 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, the second switch subelement also comprises: the 4th resistance is connected between the colelctor electrode of the emitter stage of the second triode and the second triode.
Further, light comprises every the 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; The 4th resistance is connected between the base stage and the second lead-out terminal of the 3rd triode; And the 5th resistance, be connected to light between second input and dc source of chip, wherein, dc source is used to light every chip power supply.
To achieve these goals, according to a further aspect in the invention, a kind of control method of air-conditioner is provided, comprise: send the first cut-off signal to being arranged on the first switch element in the first supply line or sending the first Continuity signal to the second switch unit that is arranged in the second supply line, wherein, the 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 the second switch unit after sending the first cut-off signal to the first switch element, or sends the second Continuity signal to the first switch element at second Preset Time of transmission the first Continuity signal to the second switch unit.
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, comprised the control circuit of any air-conditioner that foregoing of the present invention provides.
By the present invention, employing comprises the control circuit of following structure: the first switch element, be arranged in the first supply line, be used for when receiving the first cut-off signal, disconnecting, perhaps, 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; The second switch unit is arranged in the second supply line, is used for when receiving the second cut-off signal, disconnecting, perhaps, and conducting when receiving the second Continuity signal, wherein, the second supply line is the supply line of drive circuit control voltage; Control module; be connected respectively with the second switch unit with the first switch element; send the second cut-off signal to the second switch unit for the first Preset Time after sending the first cut-off signal to the first switch element; perhaps; send the second Continuity signal to the first switch element at transmission the first Continuity signal second Preset Time to the second switch unit; after controlling the disconnection of the first switch element, control again the disconnection of second switch unit; the supply line that has realized the operating voltage of control air-conditioner blower fan drive circuit disconnected before the supply line of control voltage; control again the first switch element conducting after the control second switch cell conduction; realized supply line's conducting before the supply line of the operating voltage of blower fan drive circuit of the control voltage of control air-conditioner blower fan drive circuit; realized the SPM in the protection drive circuit; avoided the air-conditioner SPM to repeat the drawback of conducting; solve the problem that the SPM of air-conditioner burns out easily in the prior art, and then reached the effect in the life-span of the SPM that improves air-conditioner.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the first connection diagram according to the control circuit of the embodiment of the invention and blower fan;
Fig. 2 is the second connection diagram according to the control circuit of the embodiment of the invention and blower fan;
Fig. 3 is the physical circuit figure according to the power supply circuits of the first switch element of the control circuit of the embodiment of the invention and drive circuit works voltage;
Fig. 4 is the physical circuit figure according to the second switch unit of the control circuit of the embodiment of the invention;
Fig. 5 is the flow chart according to the control method of the embodiment of the invention;
Fig. 6 is the schematic diagram that carries out air-conditioner start control and shutdown control according to the control method of the embodiment of the invention; And
Fig. 7 is the flow chart according to the control method of the start of air-conditioner or the shutdown command execution embodiment of the invention.
The specific embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The embodiment of the invention provides a kind of control circuit of air-conditioner, Fig. 1 is the first connection diagram according to the control circuit of the embodiment of the 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 module 30.
Wherein, the 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 on the drive circuit of air-conditioner blower fan and controls in the supply line of voltage, wherein, when receiving the cut-off signal that sends to the first switch element 10, the first switch element 10 disconnects so that the supply line of blower fan drive circuit works voltage opens circuit, conducting when the first switch element 10 receives the Continuity signal that sends to the first switch element 10 is so that supply line's connection of blower fan drive circuit control voltage, conducting when second switch unit 20 receives the Continuity signal that sends to second switch unit 20 is so that supply line's connection of blower fan drive circuit control voltage, when receiving the cut-off signal that sends to second switch unit 20, second switch unit 20 disconnects so that the supply line of blower fan drive circuit works voltage disconnects, 30 of control modules are used for sending Continuity signal and cut-off signal to the first switch element 10 and second switch unit 20, particularly, control module 30 can send first the first cut-off signal to the first switch element 10, then experiences to send the second cut-off signal behind the first Preset Time to second switch unit 20; Also can send first the first Continuity signal to second switch unit 20, then experience sending the second Continuity signal to the first switch element 10 behind the second Preset Time.Wherein, the first Preset Time and the second Preset Time can arrange according to concrete needs, in this embodiment can be take the first Preset Time as 2 minutes, and the second Preset Time is to be illustrated 2 seconds.
For air-conditioner, the principal element that affects its SPM life-span is the unreasonable control of two power supplies of air-conditioner blower fan drive circuit, the power supply of the power supply that these two power supplies are respectively blower fan drive circuit works voltage and blower fan drive circuit control voltage, be respectively 310V power supply and 15V power supply, when air-conditioning works, to the 310V of dc fan power supply, the 15V power supply all is in conducting state, the air-conditioning normal operation.The 15V power supply is to the metal-oxide-semiconductor grid power supply of IPM module the inside, and the 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 disconnect simultaneously, or 15V cuts off first, cuts off 310V again, namely following situation can appear: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ended, grid and drain electrode were in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also very high voltage can occur, make metal-oxide-semiconductor repeat conducting, the time has been grown namely and can cause damage to metal-oxide-semiconductor.When air-conditioning enters normal operating conditions by holding state, if simultaneously conducting of the 310V of dc fan and 15V or 310V pass through first, namely following situation can appear: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ended, grid and drain electrode were in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also very high voltage can occur, make metal-oxide-semiconductor repeat conducting, the time has been grown equally and can cause damage to metal-oxide-semiconductor.And the control circuit of this embodiment is entered by normal operating conditions under the holding state at air-conditioning, control module 30 cuts off first the 310V power supply to the dc fan drive circuitry, cut off the 15V power supply to the dc fan drive circuitry after 2 minutes, this moment, operation of air conditioner was under the 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 the 15V power supply is stable, conducting 310V power supply again.Wherein, Fig. 2 shows the connection diagram of control circuit and the blower fan of the another kind of embodiment of the invention, figure 2 illustrates IPM module, 15V power supply and 310V power supply in the drive circuit.
The control circuit of this embodiment is controlled 20 disconnections of second switch unit again after controlling 10 disconnections of the first switch element; the supply line that has realized the drive circuit works voltage of control air-conditioner blower fan disconnected before the supply line of blower fan drive circuit control voltage; control again 10 conductings of the first switch element after unit 20 conductings of control second switch; realized supply line's conducting before the supply line of blower fan drive circuit works voltage of control air-conditioner blower fan drive circuit control voltage; realized the SPM in the protection drive circuit; avoided the air-conditioner SPM to repeat the drawback of conducting; solve the problem that the SPM of air-conditioner burns out easily in the prior art, and then reached the effect in the life-span of the SPM that improves air-conditioner.Simultaneously, by when the air-conditioner standby, the supply line of control blower fan drive circuit works voltage and the supply line of blower fan drive circuit control voltage all disconnect, and realized reduction air-conditioner stand-by power consumption, have reduced the extra power consumption of air-conditioner, have reached the effect of energy saving.
Further, the physical circuit connection layout of the first switch element 10 that provides in the embodiment of the invention control circuit can illustrate by Fig. 3, Fig. 3 is the physical circuit figure according to the power supply circuits of the first switch element of the control circuit of the embodiment of the invention and blower fan drive circuit works voltage, as shown in Figure 3, the first switch element 10 is mainly by relay K 4, triode Q20, resistance R 1 and diode D9 form, wherein, the first end of resistance R 1 is connected with the DC-CONTROL lead-out terminal of control module, the second end of resistance R 1 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 on (shown in Fig. 3 is on the zero line that arranges) in the supply line of blower fan drive circuit works voltage 310V, in this embodiment, control module can be master integrated circuit (the Integrated Circuit of air-conditioner, be called for short IC), when air-conditioning works, main IC " DC-CONTROL " pin output high level, triode Q20 conducting, relay K 4 is in closure state, rectifier bridge DB2 normal operation this moment, capacitor C 216 is charged to 310V, to give the dc fan drive circuit for the work electricity, capacitor C 36 can be carried out rectifying and wave-filtering to 310V; When air-conditioning work during at holding state, main IC " DC-CONTROL " pin output low level, triode Q20 cut-off, relay K 4 is in off-state, and this moment, rectifier bridge DB2 quit work, capacitor C 216 is owing to can not get charging, and discharge resistance R93 is arranged, R95, R96, R97 does not stop to consume the electric weight of capacitor C 216 storages, makes the voltage of capacitor C 216 drop to very soon zero.Because the 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, and is therefore safer than the control DC terminal with Control rectifier bridge input, also lower to the requirement of relay, wherein, RNTC2 is thermistor, by the live wire in the supply line of blower fan drive circuit works voltage thermistor is set, and can fall the impact of Low Drift Temperature circuit.
The physical circuit figure of the second switch unit 20 that provides in the embodiment of the invention control circuit can illustrate by Fig. 4, Fig. 4 is the physical circuit figure according to the second switch unit of the control circuit of the embodiment of the invention, as shown in Figure 4, the second control module 20 mainly contains triode Q10, triode Q11, light is every chip U5 and resistance R 4, R5, R8, R10 and R13 form, wherein, the base stage of triode Q11 is connected with the lead-out terminal CONRTONL of main IC by resistance R 10, the colelctor electrode of triode Q10 is connected with the blower fan drive circuit, when air-conditioning works, main IC " CONRTONL " pin output low level, triode Q11 conducting, " 2 " pin of optocoupler U5 is equivalent to ground connection, make optocoupler U5 conducting, when optocoupler U5 conducting, its the 3rd pin and the 4th pin are equivalent to short circuit, voltage U 1=15/ between R4 and R5 (5100+2700) * 2700=5.19V (wherein like this, the resistance of R4 and R5 is respectively 5100 ohm, 2700 ohm), because the BE extreme pressure of triode Q10 is poor greater than 0.7V, triode Q10 conducting makes 15V voltage power to dc fan by the CE utmost point of triode.When air-conditioning enters holding state, main IC " CONRTONL " pin output high level, triode Q11, optocoupler U5 is in cut-off state, the B utmost point of triode Q10 and E are extremely idiostatic like this, and triode Q10 also is in cut-off state, and 15V can't power to dc fan by triode Q10.Wherein, the effect of each components and parts is respectively:
R10: current-limiting resistance;
Q11: control optocoupler U5 makes it be in conducting or cut-off state;
U5: control triode Q10 makes it be in conducting or cut-off state;
R4, R5: divider resistance, when making the optocoupler conducting, the B of triode Q10, the E utmost point form the pressure reduction greater than 0.7V;
Q10: during conducting, 15V voltage during cut-off, cuts off the 15V power supply to the dc fan drive circuitry to the drive circuitry of dc fan;
R8: reserve resistance, use during test.
The control circuit of the embodiment of the invention shown in Fig. 3 and Fig. 4 is mainly controlled the electric power thus supplied of blower fan every chip by relay, triode and light, control circuit compared to existing technology, the element that increases has: one on 5A relay, three on triode, light are every one of chip and Chip-R, compare the cost increase with the control mainboard of existing air-conditioner and almost can ignore, so the control circuit of the embodiment of the invention has reached the effect in the life-span of the SPM that improves air-conditioner when not increasing the air-conditioner cost.
The embodiment of the invention also provides a kind of control method of air-conditioner, this control method can be carried out by the control circuit that the embodiment of the invention provides, Fig. 5 is the flow chart according to the control method of the embodiment of the invention, as shown in Figure 5, the control method of this embodiment comprises that step S502 is to step S504.
S502: send the first cut-off signal to being arranged on the first switch element in the first supply line or sending the first Continuity signal to the second switch unit that is arranged in the second supply line.Wherein, the first supply line is the supply line of the drive circuit works voltage of air-conditioner blower fan, the second supply line is the supply line of blower 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, when receiving the first cut-off signal, the first switch element disconnects the supply line of blower fan, when needs control air-conditioner transfers open state to from holding state, then send the first Continuity signal to the second switch unit, the supply line of conducting blower fan drive circuit when the second switch unit receives the first Continuity signal.
S504: the first Preset Time sends the second cut-off signal to the second switch unit after sending the first cut-off signal to the first switch element, or send the second Continuity signal to the first switch element sending second Preset Time of the first Continuity signal to the second switch unit, wherein, when needs control air-conditioner transfers holding state to from open state, then step S502 sends the first cut-off signal to the first switch element, at this moment, step S504 then after sending the first cut-off signal to the first switch element the first Preset Time send the second cut-off signal to the second switch unit, the second switch unit receives the supply line of disconnection blower fan drive circuit behind the second cut-off signal; When needs control air-conditioner transfers open state to from holding state, then step S502 sends the first Continuity signal to the second switch unit, at this moment, step S504 then sends the second Continuity signal to the first switch element sending the first Continuity signal second Preset Time to the second switch unit, and the first switch element receives the supply line of conducting blower fan behind the second Continuity signal.Wherein, the first Preset Time and the second Preset Time can arrange according to concrete needs, in this embodiment can be take the first Preset Time as 2 minutes, and the second Preset Time is to be illustrated 2 seconds.
For air-conditioner, the principal element that affects its SPM life-span is the unreasonable control of two power supplies of air-conditioner blower fan drive circuit, the power supply of the power supply that these two power supplies are respectively blower fan drive circuit works voltage and blower fan drive circuit control voltage, be respectively 310V power supply and 15V power supply, when air-conditioning works, to the 310V of dc fan power supply, the 15V power supply all is in conducting state, the air-conditioning normal operation.The 15V power supply is to the metal-oxide-semiconductor grid power supply of IPM module the inside, and the 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 disconnect simultaneously, or 15V cuts off first, cuts off 310V again, namely following situation can appear: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ended, grid and drain electrode were in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also very high voltage can occur, make metal-oxide-semiconductor repeat conducting, the time has been grown namely and can cause damage to metal-oxide-semiconductor.When air-conditioning enters normal operating conditions by holding state, if simultaneously conducting of the 310V of dc fan and 15V or 310V pass through first, namely following situation can appear: because metal-oxide-semiconductor is the device of Control of Voltage electric current, when metal-oxide-semiconductor ended, grid and drain electrode were in high-impedance state, if very little electric current appears in grid here, according to U=I*R, also very high voltage can occur, make metal-oxide-semiconductor repeat conducting, the time has been grown equally and can cause damage to metal-oxide-semiconductor.
And the control method of this embodiment is entered by normal operating conditions under the holding state at air-conditioning, control module 30 cuts off first the 310V power supply to dc fan drive circuit works power voltage supply, cut off the 15V power supply to dc fan drive circuit control power voltage supply after 2 minutes, this moment, operation of air conditioner was under the 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 the 15V power supply is stable, conducting 310V power supply again.Concrete control flow as shown in Figure 6.
The control method of the embodiment of the invention is controlled the disconnection of second switch unit again after controlling the disconnection of the first switch element; the supply line that has realized the operating voltage of control air-conditioner blower fan drive circuit disconnected before the supply line of control voltage; control again the first switch element conducting after the control second switch cell conduction; realized supply line's conducting before the supply line of the operating voltage of drive circuit of the control voltage of control air-conditioner blower fan drive circuit; realized the SPM in the protection drive circuit; avoided the air-conditioner SPM to repeat the drawback of conducting; solve the problem that the SPM of air-conditioner burns out easily in the prior art, and then reached the effect in the life-span of the SPM that improves air-conditioner.Simultaneously, by when the air-conditioner standby, the supply line of control blower fan drive circuit works voltage and the supply line of blower fan drive circuit control voltage all disconnect, and realized reduction air-conditioner stand-by power consumption, have reduced the extra power consumption of air-conditioner, have reached the effect of energy saving.
Further, can judge 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 invention, judge according to whether receiving start-up command whether air-conditioner transfers open state (duty) to from holding state.Idiographic flow as shown in Figure 7.
In addition, the embodiment of the invention also provides a kind of air-conditioner, this air-conditioner can be the air-conditioner with control circuit of any air-conditioner that the embodiment of the invention provides, also can be the air-conditioner that adopts the control method of the air-conditioner that the embodiment of the invention provides.
As can be seen from the above description, the present invention has reached the life-span of the SPM that improves air-conditioner and the effect of energy saving.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the control circuit of an air-conditioner is characterized in that, comprising:
The first switch element is arranged in the first supply line, is used for disconnecting when receiving the first cut-off signal, perhaps, conducting when receiving the first Continuity signal, wherein, the supply line of the drive circuit works voltage that described the first supply line is the air-conditioner blower fan;
The second switch unit is arranged in the second supply line, is used for disconnecting when receiving the second cut-off signal, perhaps, conducting when receiving the second Continuity signal, wherein, the supply line of the drive circuit control voltage that described the second supply line is described air-conditioner blower fan;
Control module, be connected respectively with the second switch unit with described the first switch element, send described the second cut-off signal to the second switch unit for the first Preset Time after sending described the first cut-off signal to the first switch element, perhaps, send extremely described the first switch element of described the second Continuity signal sending described the first Continuity signal second Preset Time to the described second switch unit.
2. control circuit according to claim 1 is characterized in that, described control module comprises:
The first lead-out terminal is connected with described the first switch element, is used for sending the first control signal to described the first switch element, and wherein, described the first control signal comprises described the first cut-off signal and described the first Continuity signal; And
The second lead-out terminal is connected with described second switch unit, is used for sending the second control signal to described second switch unit, and wherein, described the second control signal comprises described the second cut-off signal and described the second Continuity signal.
3. control circuit according to claim 2 is characterized in that, described the first switch element comprises:
Relay, wherein, the contact of described relay is arranged in described the first supply line; And
Relay driven element unit is connected between the control coil of described the first lead-out terminal and described relay.
4. control circuit according to claim 3 is characterized in that, described relay driven element unit comprises:
The first triode, wherein, the base stage of described the first triode is connected with described the first lead-out terminal, the grounded emitter of described the first triode, the colelctor electrode of described the first triode is connected with the control coil of described the first relay; And
The first resistance is connected between the base stage and described the first lead-out terminal of described the first triode.
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 the first supply line; And
The first resistance is connected between the base stage and described the first lead-out terminal of described the first triode.
6. control circuit according to claim 2 is characterized in that, described second switch unit comprises:
The second switch subelement is connected between the power supply and described drive circuit of described drive circuit;
Light comprises input and output every chip, and wherein, described light is connected with described the 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 is connected to described light between the input and described the second lead-out terminal of chip every the chip controls subelement.
7. control circuit according to claim 6 is characterized in that, described second switch subelement comprises:
The second triode, the emitter stage of described the second triode is connected with the power supply of described drive circuit, and the colelctor electrode of described the second triode is connected with described drive circuit, and the base stage of described the second triode is connected with the output of described light every chip;
The second resistance is connected between the base stage of the power supply of described drive circuit and described the second triode; And
The 3rd resistance is connected to the base stage of described the 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:
The 4th resistance is connected between the colelctor electrode of the emitter stage of described the second triode and described the second triode.
9. control circuit according to claim 6 is characterized in that, described light comprises every the chip controls subelement:
The 3rd triode, the emitter stage of described the 3rd triode is connected with the first input end of described light every chip, and the base stage of described the 3rd triode is connected the grounded collector of described the 3rd triode with described the second lead-out terminal;
The 4th resistance is connected between the base stage and described the second lead-out terminal of described the 3rd triode; And
The 5th resistance is connected to described light between second input and dc source of chip, and wherein, described dc source is used to described light every chip power supply.
10. the control method of an air-conditioner is characterized in that, described method comprises:
Send the first cut-off signal to being arranged on the first switch element in the first supply line or sending the first Continuity signal to the second switch unit that is arranged in the second supply line, wherein, the supply line of the drive circuit works voltage that described the first supply line is the air-conditioner blower fan, the supply line of the drive circuit control voltage that described the second supply line is described air-conditioner blower fan; And
Send the second cut-off signal to described second switch unit sending described the first cut-off signal first Preset Time to described the first switch element, or send extremely described the first switch element of the second Continuity signal sending described the first Continuity signal to the second Preset Time after the described second switch unit.
11. control method according to claim 10 is characterized in that, described the first Preset Time is greater than described the second Preset Time.
12. an air-conditioner is characterized in that, comprises the control circuit of each described air-conditioner in the claim 1 to 9.
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| CN111343065A (en) * | 2020-03-03 | 2020-06-26 | 广东美的暖通设备有限公司 | Communication electric appliance and air conditioner |
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| CN112947170A (en) * | 2021-02-02 | 2021-06-11 | 珠海拓芯科技有限公司 | Double-fan control circuit and air conditioner |
| CN115095963A (en) * | 2022-08-26 | 2022-09-23 | 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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