CN202383451U - Air conditioner and control circuit thereof - Google Patents
Air conditioner and control circuit thereof Download PDFInfo
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- CN202383451U CN202383451U CN2011205396736U CN201120539673U CN202383451U CN 202383451 U CN202383451 U CN 202383451U CN 2011205396736 U CN2011205396736 U CN 2011205396736U CN 201120539673 U CN201120539673 U CN 201120539673U CN 202383451 U CN202383451 U CN 202383451U
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- machine mainboard
- outer machine
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- air conditioner
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Abstract
The utility model discloses an air conditioner and a control circuit thereof, wherein the control circuit of the air conditioner comprises a bus communication circuit which is connected between a main board of an internal machine and a main board of an external machine of the air conditioner for transferring a start-up control command sent by the main board of the internal machine to the main board of the external machine; a bus stealing circuit which is connected with the bus communication circuit for converting differential signals on the bus communication circuit into voltage signals when the bus communication circuit transmits data, wherein the voltage signals are served as start-up voltage of the main board of the external machine; and a power supply control circuit which is connected between the main board of the external machine and the power supply of an outdoor unit for connecting the main board of the external machine and the power supply of the outdoor unit after the main board of the external machine starts up and disconnecting them when the main board of the external machine stands by. According to the utility model, power consumption for starting the external machine of the air conditioner can be reduced, and the stand-by power consumption of the air conditioner is reduced.
Description
Technical field
The utility model relates to appliance field, in particular to a kind of air conditioner and control circuit thereof.
Background technology
At present, general commercial air conditioner indoor and outdoor machine all has control panel, for the indoor set mainboard can be controlled the off-premises station mainboard in real time; To control outer machine load, the off-premises station mainboard is under any circumstance all charged, and energy consumption is big; Power consumption is higher, and the waste electric energy also can't satisfy outlet 1W standby requirement.
Big to the outer machine mainboard stand-by power consumption of air conditioner in the correlation technique, as to waste electric energy problem does not propose effective solution at present as yet.
The utility model content
The fundamental purpose of the utility model is to provide a kind of air conditioner and control circuit thereof, and the outer machine mainboard power consumption of air conditioner is big to solve, the problem of waste electric energy.
To achieve these goals, according to an aspect of the utility model, a kind of control circuit of air conditioner is provided.
Control circuit according to the air conditioner of the utility model comprises: the bus communication circuit, be connected between the interior machine mainboard and outer machine mainboard of air conditioner, and be used for the start control command that interior machine mainboard sends is transferred to outer machine mainboard; Bus stealing circuit is connected with the bus communication circuit, is used for when bus communication circuit transmission data, converting the differential signal on the bus communication circuit into voltage signal, and wherein, voltage signal is used for the start voltage as outer machine mainboard; And power control circuit, be connected between the power supply of outer machine mainboard and off-premises station, be used for outside the start of machine mainboard after, connect the power supply of outer machine mainboard and off-premises station, during machine mainboard standby outside, break off the power supply of outer machine mainboard and off-premises station.
Further, bus stealing circuit comprises: rectification circuit, be connected with the bus communication circuit, and be used for the differential signal on the bus communication circuit is carried out the rectifier output voltage signal; And voltage conversion circuit, first end is connected with rectification circuit, and second end connects outer machine mainboard, is used for converting the voltage signal of rectification circuit output into voltage signal that outer machine mainboard starts.
Further, bus stealing circuit also comprises: the normally closed switch circuit, and first end is connected with rectification circuit; First filtering circuit, first end is connected with second end of normally closed switch circuit, and second end of first filtering circuit is connected with first end of voltage conversion circuit; Second filtering circuit, first end is connected with second end of voltage conversion circuit, and second end of second filtering circuit connects outer machine mainboard.
Further, the normally closed switch circuit comprises: first switching tube, the first end ground connection, the outer machine mainboard of second termination; Normally closed relay comprises contact switch and coil, and wherein, first end of coil is connected with the 3rd end of first switching tube, and second end of coil connects voltage conversion circuit, and first end of contact switch connects rectification circuit; First diode is with the coils from parallel connection of coils of normally closed relay; And first electric capacity, with the coils from parallel connection of coils of normally closed relay.
Further, first filtering circuit, second filtering circuit and voltage conversion circuit comprise: inductance, and first end connects second end of the contact switch of normally closed relay; Second diode, positive pole is connected with second end of inductance; Boost control chip, first pin is connected with the negative pole of second pin with second diode, and three-prong is connected in first node, the 4th pin ground connection, wherein, first node is the node between the inductance and second diode; The step-down control chip, the first pin ground connection, second pin is used to connect outer machine mainboard, and three-prong is connected with the negative pole of second diode; Second electric capacity, first end is connected in Section Point, the second end ground connection, wherein, Section Point is the node between the contact switch of inductance and normally closed relay; The 3rd electric capacity, first end is connected in the 3rd node, the second end ground connection, wherein, the 3rd node is the node between second electric capacity and the inductance; The 4th electric capacity, first end is connected with the negative pole of second diode, the second end ground connection; The 5th electric capacity, first end is connected in the 4th node, the second end ground connection, wherein, the 4th node be the step-down control chip and second diode between node, first end of the 5th electric capacity also connects the coil of normally closed relay; The 6th electric capacity, first end is connected in the 5th node, the second end ground connection, wherein, the 5th node is the node between step-down control chip and the outer machine mainboard; And the 7th electric capacity, first end is connected in the 6th node, the second end ground connection, and wherein, the 6th node is the node between the 6th electric capacity and the outer machine mainboard.
Further, power control circuit comprises: second switch pipe, the first end ground connection, the outer machine mainboard of second termination; Normally opened relay comprises contact switch and coil, and wherein, first end of coil is connected with the 3rd end of second switch pipe, and second end of coil connects power supply, and first end of contact switch connects the power supply of off-premises station, and second end connects the off-premises station mainboard; The 3rd diode is with the coils from parallel connection of coils of normally opened relay; And the 8th electric capacity, with the coils from parallel connection of coils of normally opened relay.
To achieve these goals, an aspect according to the utility model provides a kind of air conditioner.
Air conditioner according to the utility model comprises: interior machine mainboard; Outer machine mainboard; Be used to the power supply of outer machine main board power supply; And the control circuit of any air conditioner of providing of the utility model.
Through the utility model, adopt to comprise control circuit with the air conditioner of lower part: the bus communication circuit, be connected between the interior machine mainboard and outer machine mainboard of air conditioner, be used for the start control command that interior machine mainboard sends is transferred to outer machine mainboard; Bus stealing circuit is connected with the bus communication circuit, is used for when bus communication circuit transmission data, converting the differential signal on the bus communication circuit into voltage signal, and wherein, voltage signal is used for the start voltage as outer machine mainboard; And power control circuit, be connected between the power supply of outer machine mainboard and off-premises station, be used for outside the start of machine mainboard after; Connect the power supply of outer machine mainboard and off-premises station; During machine mainboard standby outside, break off the power supply of outer machine mainboard and off-premises station, solved the problem that the outer machine mainboard stand-by power consumption of air conditioner is big, waste electric energy; And then reached the power consumption that reduces outer machine startup, make the low effect of air conditioner stand-by power consumption.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the theory diagram according to the control circuit of the air conditioner of the utility model first embodiment;
Fig. 2 is the theory diagram according to the control circuit of the air conditioner of the utility model second embodiment;
Fig. 3 is the elementary diagram according to the bus communication circuit of the utility model embodiment;
Fig. 4 is the elementary diagram according to the bus stealing circuit of the utility model embodiment;
Fig. 5 is the elementary diagram according to the power control circuit of the utility model embodiment; And
Fig. 6 is the process flow diagram according to the control method of the air conditioner of the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 1 is the theory diagram according to the control circuit of the air conditioner of the utility model first embodiment, and is as shown in Figure 1, and this air conditioner comprises: interior machine mainboard 20; Outer machine mainboard 40; Be used to the power supply 60 of outer machine main board power supply, the power module of promptly outer machine mainboard, the AC power of this external outside of power module; And control circuit 80.
Wherein, control circuit 80 comprises: bus communication circuit 82; Bus stealing circuit 84 and power control circuit 86.
In the transmission course of data command, bus stealing circuit 84 is stolen bus current, converts the differential signal on the bus communication circuit 82 into voltage signal, makes the start of outer machine mainboard.
After outer machine mainboard 40 starts, send the connection control signal, the outer machine mainboard 40 and the power supply 60 of off-premises station are connected to power control circuit 86; Outer machine mainboard 40 can change over to and rely on self power work; Carry out normal operation mode, when needs changed standby mode over to, interior machine mainboard 20 outside machine mainboards 40 sent instruction; Outer machine mainboard receives the instruction back and sends the disconnection control signal to power control circuit 86; Power control circuit 86 breaks off the outer machine mainboard 40 and the power supply 60 of off-premises station, gets into standby, outer machine mainboard 40 not power consumptions.
During machine mainboard normal operation input, interior machine mainboard 20 continues to send the start control commands to bus communication circuit 82 outside needs wake up, through the stealing technology, accomplishes outer machine mainboard startup and course of normal operation.
In this embodiment, outer machine mainboard acquiescence is not charged, when starting, starts through stealing bus current, and start the back and connect self power work, not power consumption of deenergization during standby, thus reduced the power consumption that outer machine starts, make the air conditioner stand-by power consumption lower.
Fig. 2 is the theory diagram according to the control circuit of the air conditioner of the utility model second embodiment, and is as shown in Figure 2, and interior machine mainboard (not shown) is via 485 communicating circuits 82 (being the bus communication circuit) and MCU40 (promptly outer machine mainboard) communication.In communication process; Rectifier bridge 841 (being rectification circuit) is converted into voltage signal with the differential signal on 485 communicating circuits 82; Input to booster circuit 847 (being voltage conversion circuit) via normally closed relay 843 (being the normally closed switch circuit) and input filter circuit 845 (i.e. first filtering circuit), the voltage signal after boosting through booster circuit 847 provides start voltage via filtering and the outside machine MCU40 of tank circuit 849 (i.e. second filtering circuit).
After the outer machine MCU40 start, send the connection control signal, make MCU40 and external ac power source connect to power control circuit (including normally opened relay 861 and external power source change-over circuit 863); MCU40 can change over to and rely on self power work; Carry out normal operation mode, when needs changed standby mode over to, interior machine mainboard sent instruction to MCU40; MCU40 receives the instruction back and sends the disconnection control signal to power control circuit; Power control circuit breaks off MCU40 and external ac power source, gets into standby, not power consumption of MCU40.
Particularly, the elementary diagram of each several part circuit will specifically describe hereinafter.
Fig. 3 is the elementary diagram according to the bus communication circuit of the utility model embodiment; As shown in Figure 3; This bus communication circuit is an example with the RS485 communicating circuit; Through RS485 transceiver MAX3082/SP485 and other necessary pull-up resistor and pull down resistor, realize the communication of the inside and outside machine of air conditioner.
Fig. 4 is the elementary diagram according to the bus stealing circuit of the utility model embodiment, and is as shown in Figure 4, and rectification circuit is rectifier bridge D6, A, the B signal wire of its input termination RS485 transceiver.The normally closed switch circuit comprises: the first switching tube Q2, normally closed relay U3, and the first diode D14 and first capacitor C 21 of protection normally closed relay U3.Voltage conversion circuit comprises boost control chip U4 and step-down control chip V3, and other necessary electronic components and parts.Filtering circuit comprises different electric capacity with tank circuit.The concrete annexation of each electron device is following:
The first end ground connection of the first switching tube Q2, second end connects outer machine mainboard via resistance R 6; First end of normally closed relay U3 coil is connected with the 3rd end of the first switching tube Q2, and second end connects boost control chip U4 output terminal, and first end of normally closed relay U3 contact switch connects rectification circuit; The first diode D14 and first capacitor C 21 all with the coils from parallel connection of coils of normally closed relay U3.
Step-down control chip V3 is chosen as VOL_MC33269T, its GND pin ground connection, and the IN pin is connected with the negative pole of the second diode D1, after output 5V voltage transitions was 3.3V voltage after boost control chip U4 was boosted, inputs to outer machine mainboard via the 3V3 pin; The 4th capacitor C 6 is parallelly connected with the 5th capacitor C 7, is connected between boost control chip U4 and the step-down control chip V3, and wherein the 5th capacitor C 7 is an electrochemical capacitor, and boost control chip U4 relies on 7 energy storage of the 5th capacitor C, as the working power of normally closed relay U3.The 6th capacitor C 10 is parallelly connected with the 7th capacitor C 8, is connected between step-down control chip V3 and the outer machine mainboard, to the electric signal Filtering Processing of step-down control chip V3 output.
Fig. 5 is the elementary diagram according to the power control circuit of the utility model embodiment, and is as shown in Figure 5, and this circuit comprises: second switch pipe Q1, normally opened relay U2 and the second switch pipe Q1 and the 3rd diode D15 that are used to protect normally opened relay U2.
Wherein, the first end ground connection of second switch pipe Q1, second end connects outer machine mainboard via resistance R 5; First end of normally opened relay U2 coil is connected with the 3rd end of second switch pipe Q1, and second end connects the 5V power supply, and first end of contact switch connects the power supply of off-premises station, and second end connects the off-premises station mainboard; The coils from parallel connection of coils of the 3rd diode D15, the 8th capacitor C 19 and normally opened relay U2.
The concrete course of work of bus communication circuit shown in Figure 3, bus stealing circuit shown in Figure 4 and source control circuit shown in Figure 5 is described below:
Step 1: when just powering on, normally closed relay U3 adhesive is when the machine mainboard moves outside air-conditioner system needs; The indoor set mainboard sends communication data through the RS485 bus, and exist differential signal on A, the B line this moment, and this differential signal is the 5V power supply through boosting through NCP1402 behind rectification circuit; And the electrochemical capacitor C7 energy storage of dependence rear end; As the working power of relay, step-down is 3.3V to 5V through power supply chip MC33269 again, supplies outer machine MCU work.
Step 2: the normally opened relay U2 after outer machine MCU puts into operation among adhesive Fig. 5, with power connection, outer machine mainboard can change over to and rely on self power work, and then the normally closed relay U3 in the fragmentary 4.
Step 3: when the air conditioner complete machine need change low power operation over to; The indoor set mainboard sends standby command to the off-premises station mainboard; After the off-premises station mainboard is received standby command, the normally opened relay U2 among Fig. 5 is broken off, the off-premises station power supply breaks off; Outer machine MCU dead electricity is not worked fully, and whole outer machine controller is not charged.
Step 4: outside needs wake up, during the machine normal operation input, carry out the same step 1 of action.
Present embodiment adopts bus stealing technology, and the outer machine acquiescence in the back that powers on is not charged, when machine mainboard outside the needs is worked; Interior machine mainboard sends the certain hour data continuously to bus, and outer machine mainboard is stolen bus current, after storage capacitor reaches certain voltage outside machine MCU work; The power supply relay of the outer machine of adhesive, outer machine can change over to and rely on self power work, carry out normal operation mode; Machine sends instruction in when needs change standby mode over to; Outer machine mainboard receives the instruction back and breaks off the power supply relay on the outer machine, gets into standby, the not power consumption of outer machine mainboard.
Fig. 6 is the process flow diagram according to the control method of the air conditioner of the utility model embodiment, and is as shown in Figure 6, and this method comprises that following step S1021 is to step S110:
Step S102: the interior machine mainboard of control air conditioner sends the start control command via bus to the outer machine mainboard of air conditioner, and preferably, this bus adopts the RS485 communicating circuit to realize, and is as shown in Figure 3.
Step S104: obtain the differential signal on the bus, this step can convert the differential signal on the bus into current signal through rectifier bridge.
Step S106: convert differential signal into voltage signal, wherein, voltage signal is used for the start voltage as outer machine mainboard, and this step can be passed through the voltage transitions chip, and the low-voltage of rectifier bridge output is carried out boost conversion.
Step S108: through the start of the outer machine mainboard of voltage signal control.
Step S110: after the machine mainboard start outside; Connect the power supply of outer machine mainboard and off-premises station; During machine mainboard standby outside; Break off the power supply of outer machine mainboard and off-premises station, this step can realize the disconnection and the conducting of outer machine mainboard and power supply through outer machine mainboard control circuit as shown in Figure 5.
In this embodiment; Outer machine mainboard acquiescence is not charged, when starting, converts the differential signal on the bus into voltage, starts to steal bus current; Start the back and connect self power work; Not power consumption of deenergization during standby, thus the power consumption that outer machine starts reduced, make the air conditioner stand-by power consumption lower.
From above description; Can find out that the utility model has been realized following technique effect: outer machine mainboard acquiescence is not charged, when starting, starts through stealing bus current; Start the back and connect self power work; Not power consumption of deenergization during standby, thus the power consumption that outer machine starts reduced, make the air conditioner stand-by power consumption lower.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. the control circuit of an air conditioner is characterized in that, comprising:
The bus communication circuit is connected between the interior machine mainboard and outer machine mainboard of air conditioner, is used for the start control command that machine mainboard in said sends is transferred to said outer machine mainboard;
Bus stealing circuit; Be connected with said bus communication circuit, be used for when said bus communication circuit transmission data, converting the differential signal on the said bus communication circuit into voltage signal; Wherein, said voltage signal is used for the start voltage as said outer machine mainboard; And
Power control circuit; Be connected between the power supply of said outer machine mainboard and said off-premises station; After being used for outside said the start of machine mainboard; Connect the power supply of said outer machine mainboard and said off-premises station, outside said, during the standby of machine mainboard, break off the power supply of said outer machine mainboard and said off-premises station.
2. the control circuit of air conditioner according to claim 1 is characterized in that, said bus stealing circuit comprises:
Rectification circuit is connected with said bus communication circuit, is used for the differential signal on the said bus communication circuit is carried out the rectifier output voltage signal; And
Voltage conversion circuit, first end is connected with said rectification circuit, and second end connects said outer machine mainboard, is used for converting the voltage signal of said rectification circuit output into voltage signal that said outer machine mainboard starts.
3. the control circuit of air conditioner according to claim 2 is characterized in that, said bus stealing circuit also comprises:
The normally closed switch circuit, first end is connected with said rectification circuit;
First filtering circuit, first end is connected with second end of said normally closed switch circuit, and second end of said first filtering circuit is connected with first end of said voltage conversion circuit;
Second filtering circuit, first end is connected with second end of said voltage conversion circuit, and second end of said second filtering circuit connects said outer machine mainboard.
4. the control circuit of air conditioner according to claim 3 is characterized in that, said normally closed switch circuit comprises:
First switching tube (Q2), the first end ground connection, the said outer machine mainboard of second termination;
Normally closed relay (U3); Comprise contact switch and coil, wherein, first end of said coil is connected with the 3rd end of said first switching tube (Q2); Second end of said coil connects said voltage conversion circuit, and first end of said contact switch connects said rectification circuit;
First diode (D14) is with the coils from parallel connection of coils of said normally closed relay (U3); And
First electric capacity (C21) is with the coils from parallel connection of coils of said normally closed relay (U3).
5. the control circuit of air conditioner according to claim 4 is characterized in that, said first filtering circuit, said second filtering circuit and said voltage conversion circuit comprise:
Inductance (L1), first end connect second end of the contact switch of said normally closed relay (U3);
Second diode (D1), second end of anodal and said inductance (L1) is connected;
Boost control chip (U4); First pin is connected with the negative pole of second pin with said second diode (D1), and three-prong is connected in first node, the 4th pin ground connection; Wherein, said first node is the node between said inductance (L1) and said second diode (D1);
Step-down control chip (V3), the first pin ground connection, second pin is used to connect said outer machine mainboard, and three-prong is connected with the negative pole of said second diode (D1);
Second electric capacity (C1), first end is connected in Section Point, the second end ground connection, wherein, said Section Point is the node between the contact switch of said inductance (L1) and said normally closed relay (U3);
The 3rd electric capacity (C2), first end is connected in the 3rd node, the second end ground connection, wherein, said the 3rd node is the node between said second electric capacity (C1) and the said inductance (L1);
The 4th electric capacity (C6), first end is connected with the negative pole of said second diode (D1), the second end ground connection;
The 5th electric capacity (C7); First end is connected in the 4th node, the second end ground connection, wherein; Said the 4th node be said step-down control chip (V3) and said second diode (D1) between node, first end of said the 5th electric capacity (C7) also connects the coil of said normally closed relay (U3);
The 6th electric capacity (C10), first end is connected in the 5th node, the second end ground connection, wherein, said the 5th node is the node between said step-down control chip (V3) and the said outer machine mainboard; And
The 7th electric capacity (C8), first end is connected in the 6th node, the second end ground connection, wherein, said the 6th node is the node between said the 6th electric capacity (C10) and the said outer machine mainboard.
6. the control circuit of air conditioner according to claim 1 is characterized in that, said power control circuit comprises:
Second switch pipe (Q1), the first end ground connection, the said outer machine mainboard of second termination;
Normally opened relay (U2); Comprise contact switch and coil; Wherein, first end of said coil is connected with the 3rd end of said second switch pipe (Q1), and second end of said coil connects power supply; First end of said contact switch connects the power supply of said off-premises station, and second end connects said off-premises station mainboard;
The 3rd diode (D15) is with the coils from parallel connection of coils of said normally opened relay (U2); And
The 8th electric capacity (C19) is with the coils from parallel connection of coils of said normally opened relay (U2).
7. an air conditioner is characterized in that, comprising:
Interior machine mainboard;
Outer machine mainboard;
Be used to the power supply of said outer machine main board power supply; And
The control circuit of each described air conditioner in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205396736U CN202383451U (en) | 2011-12-19 | 2011-12-19 | Air conditioner and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205396736U CN202383451U (en) | 2011-12-19 | 2011-12-19 | Air conditioner and control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383451U true CN202383451U (en) | 2012-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205396736U Withdrawn - After Issue CN202383451U (en) | 2011-12-19 | 2011-12-19 | Air conditioner and control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383451U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162380A (en) * | 2011-12-19 | 2013-06-19 | 珠海格力电器股份有限公司 | Air conditioner, control circuit thereof and control method |
| CN104111673A (en) * | 2013-04-22 | 2014-10-22 | 艾默生电气公司 | Controller used for environment control system and control performance method thereof |
| CN104345729A (en) * | 2013-08-07 | 2015-02-11 | 海尔集团公司 | Current-loop communication loop-based power supply control circuit |
| CN108518826A (en) * | 2018-06-05 | 2018-09-11 | 珠海格力电器股份有限公司 | The control circuit and air-conditioning of zero stand-by power consumption outdoor machine of air-conditioner |
| WO2019196465A1 (en) * | 2018-04-13 | 2019-10-17 | 珠海格力电器股份有限公司 | Networking method, device and system for air conditioning system, and signal transmission method and device |
-
2011
- 2011-12-19 CN CN2011205396736U patent/CN202383451U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162380A (en) * | 2011-12-19 | 2013-06-19 | 珠海格力电器股份有限公司 | Air conditioner, control circuit thereof and control method |
| CN103162380B (en) * | 2011-12-19 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioner, control circuit thereof and control method |
| CN104111673A (en) * | 2013-04-22 | 2014-10-22 | 艾默生电气公司 | Controller used for environment control system and control performance method thereof |
| CN104111673B (en) * | 2013-04-22 | 2016-09-21 | 艾默生电气公司 | Controller and control execution method for environmental control system |
| US9739499B2 (en) | 2013-04-22 | 2017-08-22 | Emerson Electric Co. | Dual-mode power stealing for a climate control system controller |
| CN104345729A (en) * | 2013-08-07 | 2015-02-11 | 海尔集团公司 | Current-loop communication loop-based power supply control circuit |
| CN104345729B (en) * | 2013-08-07 | 2017-03-29 | 海尔集团公司 | A kind of power control circuit based on electric current loop order circuit |
| WO2019196465A1 (en) * | 2018-04-13 | 2019-10-17 | 珠海格力电器股份有限公司 | Networking method, device and system for air conditioning system, and signal transmission method and device |
| CN108518826A (en) * | 2018-06-05 | 2018-09-11 | 珠海格力电器股份有限公司 | The control circuit and air-conditioning of zero stand-by power consumption outdoor machine of air-conditioner |
| CN108518826B (en) * | 2018-06-05 | 2023-11-21 | 珠海格力电器股份有限公司 | Control circuit of zero standby power consumption air conditioner external unit and air conditioner |
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