CN110500696B - Control circuit and air conditioner - Google Patents

Control circuit and air conditioner Download PDF

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Publication number
CN110500696B
CN110500696B CN201910750891.5A CN201910750891A CN110500696B CN 110500696 B CN110500696 B CN 110500696B CN 201910750891 A CN201910750891 A CN 201910750891A CN 110500696 B CN110500696 B CN 110500696B
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China
Prior art keywords
outdoor
circuit
switch circuit
indoor
control circuit
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CN201910750891.5A
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Chinese (zh)
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CN110500696A (en
Inventor
安丰德
陈建兵
牛建勇
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN201910750891.5A priority Critical patent/CN110500696B/en
Publication of CN110500696A publication Critical patent/CN110500696A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • F24F11/58Remote control using Internet communication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits

Abstract

The invention discloses a control circuit and an air conditioner, relates to the technical field of control, and is used for reducing standby power consumption of the air conditioner. The method comprises the following steps: the control circuit is applied to the air conditioner and comprises a first indoor switch circuit arranged in a first indoor unit, an outdoor control circuit arranged in an outdoor unit and a first outdoor switch circuit; the first indoor switch circuit is used for switching on a first end of the first indoor switch circuit and a second end of the first indoor switch circuit after receiving the switching-on instruction so as to enable the outdoor control circuit to be electrified and operated; and the outdoor control circuit is used for sending a first control instruction to the control end of the first outdoor switch circuit through the second end of the outdoor control circuit after the outdoor control circuit is electrified to enable the first outdoor switch circuit to control the connection and disconnection between the first end and the second end of the first outdoor switch circuit according to the first control instruction. The embodiment of the invention is applied to reducing the standby power consumption of the air conditioner.

Description

Control circuit and air conditioner
Technical Field
The invention relates to the technical field of control, in particular to a control circuit and an air conditioner.
Background
Currently, when a frequency conversion unit air conditioner and a multi-split air conditioner are started, an indoor unit sends a starting signal to an outdoor unit, so that a load power supply of the outdoor unit controls a compressor to be conducted with an alternating current power supply, and the outdoor unit enters an operating state; the communication between the indoor unit and the outdoor unit is carried out in an alternating current loop communication mode.
However, when the inverter unit air conditioner and the multi-split air conditioner are in standby, many components of the air conditioner are still in a charged state, and especially a load power supply and a communication power supply of the air conditioner consume much power in the standby state. Therefore, how to reduce the power consumption of the air conditioner during standby is a technical problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a control circuit and an air conditioner, which are used for reducing the power consumption of the air conditioner during standby.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a control circuit is provided for an air conditioner, which includes a first indoor unit and an outdoor unit; the control circuit comprises a first indoor switch circuit arranged in the first indoor unit, an outdoor control circuit arranged in the outdoor unit and a first outdoor switch circuit; the first end of the first indoor switch circuit is connected with the alternating-current power supply, and the second end of the first indoor switch circuit is connected with the first end of the outdoor control circuit; the second end of the outdoor control circuit is connected with the control end of the first outdoor switch circuit; the first end of the first outdoor switch circuit is connected with an electric load of the outdoor unit of the air conditioner, and the second end of the first outdoor switch circuit is connected with an alternating-current power supply; the first indoor switch circuit is used for switching on a first end of the first indoor switch circuit and a second end of the first indoor switch circuit after receiving the switching-on instruction so as to enable the outdoor control circuit to be electrified and operated; and the outdoor control circuit is used for sending a first control instruction to the control end of the first outdoor switch circuit through the second end of the outdoor control circuit after the outdoor control circuit is electrified to enable the first outdoor switch circuit to control the connection and disconnection between the first end and the second end of the first outdoor switch circuit according to the first control instruction.
In a second aspect, an air conditioner is provided, which comprises the control circuit according to the first aspect.
The control circuit and the air conditioner provided by the embodiment of the invention are applied to reducing the standby power consumption of the air conditioner; the control circuit provided by the invention can be used for controlling the power supply to the outdoor control circuit by the first indoor switch circuit, so that the load power supply and the communication power supply of the outdoor unit are not required to be electrified in a standby state; when the air conditioner is started, the first indoor switch circuit in the indoor unit supplies power to the outdoor control circuit, so that after the outdoor control circuit is electrified and operated, the first outdoor switch circuit is controlled to supply power to components such as an electric load and the like, and the starting process of the air conditioner is realized. Finally, the effect that the load power supply and the communication power supply of the outdoor unit are not required to be electrified when the air conditioner is in a standby state is achieved, and therefore the power consumption of the air conditioner in the standby state is reduced.
Drawings
FIG. 1 is a schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 3 is a third schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 4 is a fourth schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 5 is a fifth schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 6 is a sixth schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 7 is a seventh schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 8 is an eighth schematic diagram of a control circuit according to an embodiment of the present invention;
FIG. 9 is a ninth schematic diagram of a control circuit according to an embodiment of the present invention;
fig. 10 is a tenth schematic diagram of a control circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, "/" means "or" unless otherwise specified, for example, a/B may mean a or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The inventive concept of the present invention is described below: currently, as shown in fig. 1, when an inverter unit air conditioner or a multi-split air conditioner is in standby, the switching power supplies of the indoor unit and the outdoor unit, the communication module 1, and the load power supply of the outdoor unit are in a charged state. When the air conditioner is started, a single chip Microcomputer (MCU) of the indoor Unit receives a starting signal, transmits the starting signal to the MCU of the outdoor Unit through a communication module 1 of the indoor Unit and a communication module 1 of the outdoor Unit, and controls a load power supply of the outdoor Unit to enable the compressor to be conducted with an alternating current power supply and work normally after the MCU of the outdoor Unit receives the starting signal.
Based on the above technology, the present invention finds that, when the air conditioner is in a standby state, the indoor unit and the outdoor unit are still in a charged state, and particularly, a load power supply and a switching power supply of the outdoor unit and a communication line between the indoor unit and the outdoor unit are in a charged state all the time in order to ensure that the outdoor unit can receive a start-up signal of the indoor unit at any time in the standby state, so that a lot of power consumption is consumed. Therefore, how to reduce the power consumption of the air conditioner during standby is a technical problem to be solved.
In order to solve the above technical problems, the present invention provides a solution that a module for managing power supply of an outdoor unit (hereinafter, referred to as an outdoor control circuit) is disposed in the outdoor unit, and an indoor unit controls on/off of the module and an ac power supply. Therefore, in a standby state, when all the components of the outdoor unit are in a complete power-off state and need to be started, the indoor unit supplies power to the module for managing the power supply of the outdoor unit, and the module sequentially controls all the components of the outdoor unit to be powered on and work.
Based on the above inventive concept, as shown in fig. 2, an embodiment of the present invention provides a control circuit 100 applied to an air conditioner, where the air conditioner includes a first indoor unit and an outdoor unit; the control circuit 100 comprises a first indoor switch circuit 101 arranged in the first indoor unit, and the control circuit 100 further comprises an outdoor control circuit 102 and a first outdoor switch circuit 103 arranged in the outdoor unit;
a first end of the first indoor switch circuit 101 is connected with an alternating current power supply, and a second end of the first indoor switch circuit 101 is connected with a first end of the outdoor control circuit 102; a second end of the outdoor control circuit 102 is connected with a control end of the first outdoor switch circuit 103; a first end of the first outdoor switch circuit 103 is connected to an electric load 104 of the outdoor unit of the air conditioner, and a second end of the first outdoor switch circuit 103 is connected to an ac power supply.
The first indoor switch circuit 101 is configured to, after receiving the conduction instruction, turn on a first terminal of the first indoor switch circuit 101 and a second terminal of the first indoor switch circuit 101, so that the outdoor control circuit 102 is powered on to operate.
Specifically, when the air conditioner is in a standby state, the first end and the second end of the first indoor switch circuit are in a disconnected state; when the air conditioner is started, the first indoor switch circuit 101 receives the conduction instruction, and conducts the first end and the second end of the first indoor switch circuit 101, so that the outdoor control circuit 102 is powered on to work.
The outdoor control circuit 102 is configured to send a first control instruction to the control end of the first outdoor switch circuit 103 through the second end of the outdoor control circuit 102 after power-on operation, so that the first outdoor switch circuit 103 controls on/off between the first end and the second end of the first outdoor switch circuit 103 according to the first control instruction.
Specifically, the outdoor control circuit 102 starts to operate after being connected to the ac power supply through the first indoor switch circuit, and sends a first control instruction to the first outdoor switch circuit 103.
The first control instruction is used for controlling the on/off of the first end and the second end of the first outdoor switch circuit 103.
It should be noted that the outdoor control circuit 102 may specifically include a single chip, and the single chip is used to implement a function of sending the first control instruction to the first outdoor switch circuit 103.
The first outdoor switch circuit 103, upon receiving the first control instruction, controls the electrical load 104 connected to the first outdoor switch circuit 103 to be turned on or off from the ac power supply in accordance with the first control instruction.
It should be noted that the first outdoor switch circuit 103 may specifically include at least one relay, and the switching between the first end and the second end of the first outdoor switch circuit 103 is realized through the at least one relay.
It should be noted that, in order to facilitate identifying the terminal pins on the modules, corresponding numbers are respectively marked at the terminal pins of each module in the drawings of the embodiments of the present invention. For example, in fig. 2 the outdoor control circuit is labeled with a "1" at the first end and a "2" at the second end to facilitate identification of the terminal pin. Similarly, the circuits in fig. 3, 4, 5, 6, 9 and 10 are labeled accordingly, and the description thereof will not be repeated below.
Optionally, as shown in fig. 3, the control circuit 100 according to the embodiment of the present invention may further include a second outdoor switch circuit 105 disposed in the outdoor unit of the air conditioner.
The second end of the first indoor switch circuit 101 is connected to the first end of the outdoor control circuit 102, and specifically includes: the second end of the first indoor switch circuit 101 is connected to the first end of the outdoor control circuit through the second outdoor switch circuit 105; a first end of the outdoor control circuit 102 is connected to a first end of the second outdoor switch circuit 105, and a second end of the first indoor switch circuit 101 is connected to a second end of the second outdoor switch circuit 105 through a first predetermined conductive wire.
The second outdoor switch circuit 105, further comprising: a third end and a control end; the third terminal of the second outdoor switch circuit 105 is connected to the ac power supply, and the control terminal of the second outdoor switch circuit 105 is connected to the third terminal of the outdoor control circuit 102.
The second outdoor switch circuit 105 is configured to maintain a conducting state between the first terminal and the second terminal of the second outdoor switch circuit 105 and maintain a disconnecting state between the first terminal and the third terminal of the second outdoor switch circuit 105 before the outdoor control circuit 102 is powered on.
Specifically, when the air conditioner is in a standby state, the first terminal and the second terminal of the second outdoor switch circuit 105 are kept in a conducting state; when the air conditioner is started, after the first terminal and the second terminal of the first indoor switch circuit 101 are conducted, the outdoor control circuit 102 is conducted with the second terminal of the first indoor switch circuit 101 through the first terminal and the second terminal of the second outdoor switch circuit 105.
And the outdoor control circuit 102 is configured to send a second control instruction to the control terminal of the second outdoor switch circuit 105 through the third terminal of the outdoor control circuit 102 after the power-on operation.
Specifically, after the outdoor control circuit 102 is powered on to operate, the single chip microcomputer included in the outdoor control circuit 102 sends a second control instruction to the third terminal of the second outdoor switch circuit 105 through the third terminal of the outdoor control circuit 102.
The second outdoor switch circuit 105 is further configured to, after receiving the second control instruction, disconnect a path between the first terminal and the second terminal of the second outdoor switch circuit 105, and connect a path between the first terminal and the third terminal of the second outdoor switch circuit 105.
Further, after the first terminal and the third terminal of the second outdoor switch circuit 105 are connected to each other by the second outdoor switch circuit 105, the outdoor control circuit 102 may be connected to the ac power supply on the outdoor unit side through the second outdoor switch circuit 105.
It is considered that after the second outdoor switch circuit 105 disconnects the path between the first terminal and the second terminal of the second outdoor switch circuit 105, the first preset conducting wire between the second terminal of the first indoor switch circuit 101 and the second terminal of the second outdoor switch circuit 105 is still in a charged state, that is, a charged conducting wire exists between the first indoor unit and the outdoor unit, so that the outdoor unit is in an unsafe state.
Therefore, optionally, as shown in fig. 4, in the control circuit 100 according to the embodiment of the present invention, the first indoor switch circuit is further configured to disconnect the path between the first terminal and the second terminal of the first indoor switch circuit 101 after the second outdoor switch circuit 105 disconnects the path between the first terminal and the second terminal of the second outdoor switch circuit 105.
Optionally, as shown in fig. 4, the control circuit 100 according to the embodiment of the present invention further includes a first indoor communication circuit 106 disposed in the first indoor unit; the consumer load 104 includes a first outdoor communication circuit 1041; the first predetermined conductive line includes a first node and a second node.
The first indoor communication circuit 106 is connected to the first node, and the first outdoor communication circuit 1041 is connected to the second node.
The first indoor communication circuit 106 is configured to communicate with the first outdoor communication circuit 1041 through a first preset wire after the first end and the second end of the first indoor switch circuit 101 are disconnected.
Optionally, as shown in fig. 5, in the control circuit 100 according to the embodiment of the present invention, the first indoor communication circuit 106 and the first outdoor communication circuit 1041 specifically communicate in an ac loop communication manner.
Specifically, the electric load 104 provided in the embodiment of the present invention further includes a communication power supply circuit 1042; the communication power circuit 1042 is connected to the first outdoor communication circuit 1041.
When the electrical load 104 is connected to the ac power source, the communication power circuit 1042 provides the power source for the ac loop communication between the first indoor communication circuit 106 and the first outdoor communication circuit 1041.
Optionally, as shown in fig. 5, an outdoor control circuit 102 is provided in the embodiment of the present invention, and is specifically configured to send, after receiving a shutdown instruction, a disconnection instruction to a control terminal of the first outdoor switch circuit 103 through a second terminal of the outdoor control circuit 102, so that the first outdoor switch circuit 103 disconnects a path between the first terminal and the second terminal of the first outdoor switch circuit 103.
Specifically, after the first outdoor switch circuit 103 disconnects the path between the first terminal and the second terminal of the first outdoor switch circuit 103, the electric load 104 is disconnected from the ac power supply.
The outdoor control circuit 102 is further configured to send a third control instruction to the control terminal of the second outdoor switch circuit 105 through the third terminal of the outdoor control circuit 102 after sending the disconnection instruction, so that the second outdoor switch circuit 105 conducts a path between the first terminal of the second outdoor switch circuit 105 and the second terminal of the second outdoor switch circuit 105, and disconnects a path between the first terminal and the third terminal of the second outdoor switch circuit 105.
Optionally, as shown in fig. 6, the air conditioner provided in the embodiment of the present invention further includes a second indoor unit, and the control circuit 100 further includes a second preset conducting wire and a second indoor switch circuit 107 disposed in the second indoor unit; a first end of the second indoor switch circuit 107 is connected to the ac power supply, and a second end of the second indoor switch circuit 107 is connected to a second end of the second outdoor switch circuit 105 through a second predetermined conductive line.
The first preset conductor is connected to the second end of the second outdoor switch circuit 105 through the first diode unit.
The second preset conductor is connected to the second end of the second outdoor switch circuit 105 through a second diode unit.
The first diode unit and the second diode unit are respectively used for isolating communication between the first indoor unit and the second indoor unit.
And the second indoor switch circuit 107 is configured to, after receiving the conduction instruction, turn on a first terminal of the second indoor switch circuit 107 and a second terminal of the second indoor switch circuit 107, so as to power on the outdoor control circuit 102 for operation.
Specifically, when the air conditioner is in a standby state, the first terminal and the second terminal of the second indoor switch circuit 107 are in an off state; when the air conditioner is started, the second indoor switch circuit 107 receives the conduction command, and conducts the first terminal and the second terminal of the first indoor switch circuit 101, so that the outdoor control circuit 102 is conducted with the ac power supply through the second indoor switch circuit 107 and the second outdoor switch circuit 105.
Optionally, as shown in fig. 6, the control circuit 100 according to the embodiment of the present invention further includes a second indoor communication circuit 108 disposed in a second indoor unit of the air conditioner, and the power load further includes a second outdoor communication circuit 1043; the second preset conducting wire comprises a third node and a fourth node;
the second indoor communication circuit 108 is connected to the third node, and the second outdoor communication circuit 1043 is connected to the fourth node.
The second indoor switch circuit 107 is further configured to disconnect the first terminal and the second terminal of the second indoor switch circuit 107 after the second outdoor switch circuit 105 disconnects the path between the first terminal and the second terminal of the second outdoor switch circuit 105.
The second indoor communication circuit 108 is configured to communicate with the second outdoor communication circuit 1043 through a second predetermined conductive line after the first terminal and the second terminal of the second indoor switch circuit 107 are disconnected.
It should be noted that, as shown in fig. 6, a third diode unit is further included between the second node and the first outdoor communication circuit 1041; a fourth diode unit is further included between the fourth node and the second outdoor communication circuit 1043.
The third diode unit is used for preventing the ac power from flowing into the communication loop of the first outdoor communication circuit 1041; the fourth diode unit is used to prevent the ac power from flowing into the communication loop of the second outdoor communication circuit 1043.
Optionally, as shown in fig. 6, the control circuit 100 according to the embodiment of the present invention further includes a first indoor control circuit 109 disposed in the first indoor unit.
The first indoor control circuit 109 is connected to the first indoor switch 101 and the first indoor communication circuit 106 respectively.
The first indoor control circuit 109 is configured to send an off command or an on command to the first indoor switch circuit 101.
It should be noted that the first indoor control circuit 109 may specifically include a single chip microcomputer, and is connected to a control pin of a relay included in the first indoor switch 101.
The first indoor control circuit 109 is further configured to communicate with the outdoor control circuit 102 through the first indoor communication circuit 106 and the first outdoor communication circuit 1041.
Optionally, as shown in fig. 6, the control circuit 100 according to the embodiment of the present invention further includes a second indoor control circuit 110 disposed in the second indoor unit.
The second indoor control circuit 110 is connected to the second indoor switch 107 and the second indoor communication circuit 108, respectively.
And a second indoor control circuit 110 for sending an off command or an on command to the second indoor switch circuit 107.
It should be noted that the second indoor control circuit 110 may specifically include a single chip microcomputer, and is connected to a control pin of a relay included in the second indoor switch 107.
The second indoor control circuit 110 is further configured to communicate with the outdoor control circuit 102 through the second indoor communication circuit 108 and the second outdoor communication circuit 1043.
Optionally, as shown in fig. 6, in the control circuit 100 according to the embodiment of the present invention, the first outdoor communication circuit 1041 and the second outdoor communication circuit 1043 are respectively connected to the fourth end of the outdoor control circuit 102.
The first outdoor communication circuit 1041 and the second outdoor communication circuit 1043 communicate with the outdoor control circuit 102 through the fourth terminal of the outdoor control circuit 102 at different time periods.
For example, fig. 7 shows the timing sequence of the communication between the first indoor control circuit 109 and the second indoor control circuit 110 and the outdoor control circuit 102; the communication between the first indoor control circuit 109 and the outdoor control circuit 102 and the communication between the second indoor control circuit 110 are performed alternately; the first indoor control circuit 109 communicates with the outdoor control circuit 102 during a communication period t1, and the second indoor control circuit 110 communicates with the outdoor control circuit 102 during a communication period t 2.
For example, fig. 8 shows a manner in which the communication power circuit 1042 of the outdoor unit of the air conditioner supplies power for ac loop communication.
Referring to fig. 6 and 8, the terminals a1, K1, C2, and E2 of the first outdoor communication circuit 1041 are respectively connected to the fourth terminal of the outdoor control circuit 102, and the first outdoor communication circuit 1041 is connected to the first indoor communication circuit 106 through COM 1.
The first outdoor communication circuit 1041 receives the signal sent by the outdoor control circuit 102 through the terminal pins a1 and K1, converts the signal, and sends the converted signal to the first indoor communication circuit 106 through COM 1.
The first outdoor communication circuit 1041 receives the signal sent by the first indoor communication circuit 106 through the COM1, converts the signal, and sends the converted signal to the outdoor control circuit 102 through the terminal pins C2 and E2.
Referring to fig. 6 and 8, the terminal pins a3, K3, C4, and E4 of the second outdoor communication circuit 1043 are respectively connected to the fourth terminal of the outdoor control circuit 102, and the second outdoor communication circuit 1043 is connected to the second indoor communication circuit 108 through COM 2.
The second outdoor communication circuit 1043 receives the signal sent by the outdoor control circuit 102 through the terminal pins a3 and K3, converts the signal, and sends the converted signal to the first indoor communication circuit 106 through COM 2.
The second outdoor communication circuit 1043 receives the signal sent by the second indoor communication circuit 108 through COM2, converts the signal, and sends the converted signal to the outdoor control circuit 102 through terminal pins C4 and E4.
In one implementation, as shown in fig. 6, the outdoor control circuit 102 according to an embodiment of the present invention is further configured to, when receiving a shutdown instruction, if any indoor unit is still in an operating state, not send the second turn-off instruction to the control terminal of the first outdoor switch circuit 103, and not send the third control instruction to the second outdoor switch circuit 105.
The second disconnection instruction is used for controlling the first outdoor switch circuit 103 to disconnect the first end and the second end of the first outdoor switch circuit 103; the third control command is used to control the second outdoor switch circuit 105, turn on the first terminal of the second outdoor switch circuit 105 and the second terminal of the second outdoor switch circuit 105, and turn off the first terminal and the third terminal of the second outdoor switch circuit 105.
In an implementation manner, when an air conditioner has only one indoor unit, with reference to fig. 9, the control circuit 100 provided in the embodiment of the present invention may be specifically as shown in fig. 9:
the first indoor switch circuit 101 may specifically include a single-pole single-throw relay K3; the first end of the K3 is connected with an alternating current power supply, and the second end of the K3 is connected with the first node.
The outdoor control circuit 102 may specifically include: the device comprises a full-bridge rectifier B3, an energy storage capacitor E3, a switching power supply 2 and a singlechip 2; the energy storage capacitor E3 is respectively connected with the full-bridge rectifier B3 and the switch power supply 2, and the switch power supply 2 is connected with the singlechip 2; the full-bridge rectifier B3 is used for converting an alternating current power supply into a direct current power supply, the energy storage capacitor E3 is used for providing a stable power supply for the switch power supply 2, and the switch power supply 2 is used for providing the direct current power supply for the single chip microcomputer 2.
The electric load 104 may specifically include a full bridge rectifier B2, an energy storage capacitor E2, an Intelligent Power Module (IPM) and a compressor; the energy storage capacitor E2 is respectively connected with the full-bridge rectifier B2 and the IPM, and the IPM is connected with the compressor.
The second outdoor switch circuit 105 may specifically include a single-pole double-throw relay K4, and the single-pole double-throw relay is used to implement the functions implemented by the second outdoor switch circuit 105. For example, the first terminal of the second outdoor switch circuit may be a common terminal of the single-pole double-throw relay, the second terminal of the second outdoor switch circuit may be a normally closed terminal of the single-pole double-throw relay, and the third terminal of the second outdoor switch circuit may be a normally open terminal of the single-pole double-throw relay.
The communication power circuit 1042 may specifically include a communication power supply; wherein the communication power supply is used for supplying power to the first outdoor communication circuit 1041.
The first outdoor communication circuit 1041 may specifically include a communication module 2.
The first indoor communication circuit 106 may specifically include a communication module 1.
The first outdoor switch circuit 103 may specifically include a first relay K1, a second relay K2, and a thermistor PTC; the first relay K1 is connected in series with the thermistor PTC and then connected in parallel with the second relay K2.
In the standby state, the first end and the second end of the first relay K1 are in an off state; the first terminal and the second terminal of the second relay K2 are in an open state.
And a first outdoor switch circuit 103 for turning on a path between the first terminal and the second terminal of the first room relay K1 after receiving the first control command.
The first outdoor switch circuit 103 is also used for turning on the path between the first terminal and the second terminal of the second relay K2 and turning off the path between the first terminal and the second terminal of the first relay K1 after turning on the path between the first terminal and the second terminal of the first room relay K1 for a preset time.
It should be noted that the preset time may be used as the energy storage time of the energy storage capacitor E2.
In another implementation manner, when the air conditioner has a plurality of indoor units, the control circuit 100 provided in the embodiment of the present invention may be specifically as shown in fig. 10:
the first indoor control circuit 109 may specifically include: the device comprises a full-bridge rectifier B1, an energy storage capacitor E1, a switching power supply 1 and a singlechip 1; the energy storage capacitor E1 is respectively connected with the full-bridge rectifier B1 and the switch power supply 1, and the switch power supply 1 is connected with the single chip microcomputer 1; the full-bridge rectifier B1 is used for converting an alternating current power supply into a direct current power supply, the energy storage capacitor E1 is used for providing a stable power supply for the switch power supply 1, and the switch power supply 1 is used for providing the direct current power supply for the single chip microcomputer 1.
The first indoor control circuit 110 may specifically include: the device comprises a full-bridge rectifier B4, an energy storage capacitor E4, a switching power supply 3 and a singlechip 3; the energy storage capacitor E4 is respectively connected with the full-bridge rectifier B4 and the switch power supply 3, and the switch power supply 3 is connected with the singlechip 3; the full-bridge rectifier B4 is used for converting an alternating current power supply into a direct current power supply, the energy storage capacitor E4 is used for providing a stable power supply for the switch power supply 3, and the switch power supply 3 is used for providing the direct current power supply for the singlechip 3.
The second indoor switch circuit 107 may specifically include a single-pole single-throw relay K4; the first end of the K4 is connected with an alternating current power supply, and the second end of the K4 is connected with the third node.
The second indoor communication circuit 108 may be specifically a communication module 3.
The second outdoor communication circuit 1043 may specifically include a communication module 4.
The first diode unit may particularly comprise a diode D1; the second diode unit may particularly comprise a diode D2; the third diode unit may particularly comprise a diode D3; the fourth diode unit may particularly comprise a diode D4.
It should be noted that, in the embodiment of the present invention, specific structures of a control circuit and an air conditioner in the case of a single indoor unit and two indoor units are provided only by way of example. In specific implementation, a person skilled in the art can also control a multi-split central air conditioner having three or more indoor units according to the control circuit provided in the embodiment of the present invention. The invention is not limited in this respect.
The control circuit and the air conditioner provided by the embodiment of the invention are applied to reducing the standby power consumption of the air conditioner; the control circuit provided by the invention can be used for controlling the power supply to the outdoor control circuit by the first indoor switch circuit, so that the load power supply and the communication power supply of the outdoor unit are not required to be electrified in a standby state; when the air conditioner is started, the first indoor switch circuit in the indoor unit supplies power to the outdoor control circuit, so that after the outdoor control circuit is electrified and operated, the first outdoor switch circuit is controlled to supply power to components such as an electric load and the like, and the starting process of the air conditioner is realized. Finally, the effect that the load power supply and the communication power supply of the outdoor unit are not required to be electrified when the air conditioner is in a standby state is achieved, and therefore the power consumption of the air conditioner in the standby state is reduced.
An embodiment of the present invention provides an air conditioner, which includes the control circuit 100 related to the above embodiment.
Since the air conditioner in the embodiment of the present invention may be applied to the control circuit, the technical effect obtained by the air conditioner may also refer to the method embodiment, and the embodiment of the present invention is not described herein again.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (9)

1. A control circuit is applied to an air conditioner, and is characterized in that the air conditioner comprises a first indoor unit and an outdoor unit; the control circuit comprises a first indoor switch circuit arranged in the first indoor unit, an outdoor control circuit arranged in the outdoor unit and a first outdoor switch circuit;
the first end of the first indoor switch circuit is connected with an alternating current power supply, and the second end of the first indoor switch circuit is connected with the first end of the outdoor control circuit; the second end of the outdoor control circuit is connected with the control end of the first outdoor switch circuit; the first end of the first outdoor switch circuit is connected with an electric load of the outdoor unit of the air conditioner, and the second end of the first outdoor switch circuit is connected with an alternating-current power supply;
the first indoor switch circuit is used for switching on a first end of the first indoor switch circuit and a second end of the first indoor switch circuit after receiving a switching-on instruction so as to enable the outdoor control circuit to be electrified and operated;
the outdoor control circuit is used for sending a first control instruction to the control end of the first outdoor switch circuit through the second end of the outdoor control circuit after the outdoor control circuit is powered on to work, so that the first outdoor switch circuit controls the connection and disconnection between the first end and the second end of the first outdoor switch circuit according to the first control instruction;
the control circuit also comprises a second outdoor switch circuit arranged in the air conditioner outdoor unit;
the second end of first indoor switch circuit connects outdoor control circuit's first end specifically includes: the second end of the first indoor switch circuit is connected with the first end of the outdoor control circuit through the second outdoor switch circuit; the first end of the outdoor control circuit is connected with the first end of the second outdoor switch circuit, and the second end of the first indoor switch circuit is connected with the second end of the second outdoor switch circuit through a first preset lead;
the second outdoor switching circuit further includes: a third end and a control end; the third end of the second outdoor switch circuit is connected with an alternating current power supply, and the control end of the second outdoor switch circuit is connected with the third end of the outdoor control circuit;
the second outdoor switch circuit is used for keeping a conducting state between a first end and a second end of the second outdoor switch circuit and keeping a disconnecting state between the first end and a third end of the second outdoor switch circuit before the outdoor control circuit is electrified and works;
the outdoor control circuit is used for sending a second control instruction to the control end of the second outdoor switch circuit through the third end of the outdoor control circuit after being electrified;
the second outdoor switch circuit is further configured to disconnect a path between the first end and the second end of the second outdoor switch circuit and to connect a path between the first end and the third end of the second outdoor switch circuit after receiving the second control instruction.
2. The control circuit of claim 1, wherein the first indoor switch circuit is further configured to disconnect the first terminal and the second terminal of the first indoor switch circuit after the second outdoor switch circuit disconnects the path between the first terminal and the second terminal of the second outdoor switch circuit.
3. The control circuit of claim 2, further comprising a first indoor communication circuit disposed in the first indoor unit; the electric load further comprises a first outdoor communication circuit; the first preset conducting wire comprises a first node and a second node;
the first indoor communication circuit is connected with the first node, and the first outdoor communication circuit is connected with the second node;
the first indoor communication circuit is used for communicating with the first outdoor communication circuit through the first preset conducting wire after the first end and the second end of the first indoor switch circuit are disconnected.
4. The control circuit of claim 3, wherein the first indoor communication circuit communicates with the first outdoor communication circuit in an AC loop communication manner.
5. The control circuit of claim 1,
the outdoor control circuit is specifically configured to send a disconnection instruction to the control terminal of the first outdoor switch circuit through the second terminal of the outdoor control circuit after receiving a shutdown instruction, so that the first outdoor switch circuit disconnects the path between the first terminal and the second terminal of the first outdoor switch circuit;
the outdoor control circuit is further configured to send a third control instruction to the control terminal of the second outdoor switch circuit through the third terminal of the outdoor control circuit after sending the disconnection instruction, so that the second outdoor switch circuit conducts a path between the first terminal of the second outdoor switch circuit and the second terminal of the second outdoor switch circuit, and disconnects a path between the first terminal and the third terminal of the second outdoor switch circuit.
6. The control circuit of claim 3, wherein the air conditioner further comprises a second indoor unit; the control circuit also comprises a second preset lead and a second indoor switch circuit arranged in the second indoor unit; the first end of the second indoor switch circuit is connected with an alternating current power supply, and the second end of the second indoor switch circuit is connected with the second end of the second outdoor switch circuit through the second preset conducting wire;
the first preset lead is connected with the second end of the second outdoor switch circuit through a first diode unit;
the second preset lead is connected with a second end of the second outdoor switch circuit through a second diode unit;
and the second indoor switch circuit is used for switching on the first end of the second indoor switch circuit and the second end of the second indoor switch circuit after receiving the switching-on instruction, so that the outdoor control circuit is electrified and works.
7. The control circuit according to claim 6, wherein the control circuit further comprises a second indoor communication circuit provided in a second indoor unit of the air conditioner, and the electric load further comprises a second outdoor communication circuit; the second preset conducting wire comprises a third node and a fourth node;
the second indoor communication circuit is connected with the third node, and the second outdoor communication circuit is connected with the fourth node;
the second indoor switch circuit is further configured to disconnect the first end and the second end of the second indoor switch circuit after the second outdoor switch circuit disconnects the path between the first end and the second end of the second outdoor switch circuit;
and the second indoor communication circuit is used for communicating with the second outdoor communication circuit through the second preset conducting wire after the first end and the second end of the second indoor switch circuit are disconnected.
8. The control circuit of claim 6, wherein the first outdoor communication circuit and the second outdoor communication circuit are respectively connected to a fourth terminal of the outdoor control circuit;
the first outdoor communication circuit and the second outdoor communication circuit communicate with the outdoor control circuit through the fourth end of the outdoor control circuit in different time periods.
9. An air conditioner characterized in that it comprises a control circuit according to any one of claims 1 to 8.
CN201910750891.5A 2019-08-14 2019-08-14 Control circuit and air conditioner Active CN110500696B (en)

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CN112146253B (en) * 2020-09-23 2021-12-17 海信(山东)空调有限公司 Air conditioner and compressor control method thereof
CN112833520B (en) * 2021-01-19 2022-02-22 海信(广东)空调有限公司 Control device, air conditioner controller, air conditioner and control method thereof

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JP2003274694A (en) * 2002-03-14 2003-09-26 Mitsubishi Electric Corp Controller and refrigeration air conditioner
CN106247537A (en) * 2016-08-08 2016-12-21 海信(山东)空调有限公司 Air-conditioner outdoor unit and one drags many air-conditionings
CN106440220A (en) * 2016-10-12 2017-02-22 青岛海尔空调器有限总公司 Air conditioner standby circuit and air conditioner
CN108119994A (en) * 2017-12-26 2018-06-05 奥克斯空调股份有限公司 The low power consumpting controling circuit and Low-power-consumptiocontrol control method of air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003274694A (en) * 2002-03-14 2003-09-26 Mitsubishi Electric Corp Controller and refrigeration air conditioner
CN106247537A (en) * 2016-08-08 2016-12-21 海信(山东)空调有限公司 Air-conditioner outdoor unit and one drags many air-conditionings
CN106440220A (en) * 2016-10-12 2017-02-22 青岛海尔空调器有限总公司 Air conditioner standby circuit and air conditioner
CN108119994A (en) * 2017-12-26 2018-06-05 奥克斯空调股份有限公司 The low power consumpting controling circuit and Low-power-consumptiocontrol control method of air conditioner

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