CN112833520B - Control device, air conditioner controller, air conditioner and control method thereof - Google Patents
Control device, air conditioner controller, air conditioner and control method thereof Download PDFInfo
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- CN112833520B CN112833520B CN202110069414.XA CN202110069414A CN112833520B CN 112833520 B CN112833520 B CN 112833520B CN 202110069414 A CN202110069414 A CN 202110069414A CN 112833520 B CN112833520 B CN 112833520B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control device, an air conditioner controller, an air conditioner and a control method thereof, wherein the control device is applied to the air conditioner and comprises the following steps: a first communication unit of the first control board; a second communication unit and a power supply circuit of the second control board; a third communication unit and a control unit of a third control panel; the first communication unit comprises a first sending unit and a first receiving unit, the second communication unit comprises a second sending unit and a second receiving unit, the third communication unit comprises a third sending unit and a third receiving unit, the first sending unit, the first receiving unit, the second sending unit, the second receiving unit and the third receiving unit are connected in series, and the third sending unit and the second sending unit are connected in parallel. In the communication state, the third sending unit and the second sending unit are connected in parallel, only one sending unit is in a working state, and the other sending unit is in a turn-off state. The invention can effectively reduce the standby power consumption of the air conditioner, and has the advantages of simple structure, strong anti-interference performance, high reliability and simple control.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control device, an air conditioner controller, an air conditioner and a control method of the air conditioner.
Background
At present, the power supply modes for air conditioners, such as inverter air conditioners, mainly include the following two types:
one is a pseudo outdoor power supply mode, namely, a mains supply is directly connected to an indoor unit through a wiring terminal of an outdoor unit through a cable, the indoor unit performs low standby power consumption control, an extra cable between the indoor unit and the outdoor unit is required to be added at the position, the cost is increased, and the complexity of the circuit is increased.
The other method is to monitor the communication signals of the indoor unit and the outdoor unit, switch on the power supply of the outdoor unit when the communication signals are detected, and switch off the power supply of the outdoor unit if the communication signals are not detected. In this method, a communication signal is detected by hardware, and the communication signal is used to further control a main power supply relay of the outdoor unit, so as to control the on/off of the power supply of the outdoor unit. The scheme is characterized in that a hardware circuit is used for detecting communication signals, so that the circuit is complex and is easy to interfere, and the control signal of the on-off control circuit is obtained by detecting the communication signals, so that the reliability and the working stability of the air conditioner are insufficient in the service life of more than ten years.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, an object of the present invention is to provide a control device, which can be applied to an air conditioner, can effectively reduce the standby power consumption of the air conditioner, and has the advantages of simple structure, low cost, strong anti-interference performance, high reliability, and simple control.
Therefore, the second purpose of the invention is to provide an air conditioner controller.
To this end, a third object of the present invention is to provide an air conditioner.
To this end, a fourth object of the present invention is to provide a control method of an air conditioner.
In order to achieve the above object, an embodiment of a first aspect of the present invention discloses a control device applied to an air conditioner, the control device including: a first control board having a first communication unit; a second control board having a second communication unit and a power supply circuit for supplying power to the second control board; the third control board is provided with a third communication unit and a control unit connected with the power supply circuit; the first communication unit comprises a first sending unit and a first receiving unit, the second communication unit comprises a second sending unit and a second receiving unit, and the third communication unit comprises a third sending unit and a third receiving unit, wherein the first sending unit, the first receiving unit, the second sending unit, the second receiving unit and the third receiving unit are connected in series, and the third sending unit is connected with the second sending unit in parallel; in a communication state, the third sending unit and the second sending unit are connected in parallel, only one sending unit is in a working state, and the other sending unit is in a turn-off state.
The control device can be applied to an air conditioner, and the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel is communicated with the third control panel, the working connection with an indoor unit is completed instead of an outdoor unit, and a power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device is simple in structure, low in cost, strong in anti-interference performance, high in reliability and simple to control.
In addition, the control device according to the above embodiment of the present invention may further include the following additional technical features:
in some examples, the first communication unit performs half-duplex communication with the third communication unit when receiving an air conditioner standby instruction, and the control unit controls the power supply circuit to be disconnected; the first communication unit performs half-duplex communication with the third communication unit when receiving an air conditioner starting instruction, and the control unit controls the power supply circuit to be conducted so as to enable the second control panel and the second communication unit to be powered on; and the third sending unit is turned off, meanwhile, the second sending unit works to enable the first communication unit and the second communication unit to carry out half-duplex communication, and the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding action.
In some examples, wherein the first receiving unit receives the air conditioner standby instruction, the first transmitting unit, the first receiving unit, the third transmitting unit and the third receiving unit form a current loop communication loop.
In some examples, the first receiving unit receives the air conditioner turn-on instruction, and the third sending unit does not work.
In some examples, the control unit is further coupled to a plurality of loads for controlling one or more of the plurality of loads to start or stop.
In some examples, the first control panel is provided to an indoor unit controller of an air conditioner.
In some examples, the second control panel and the third control panel are provided to an outdoor unit controller of an air conditioner.
To achieve the above object, an embodiment of a second aspect of the present invention discloses an air conditioner controller, including: an indoor unit controller; an outdoor unit controller; and a control device according to an embodiment of the first aspect of the present invention.
According to the air conditioner controller provided by the embodiment of the invention, the control device is provided, the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel and the third control panel are firstly communicated, the outdoor unit is replaced to complete the working connection with the indoor unit, and the power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device of the air conditioner controller is simple in structure, low in cost, strong in anti-interference performance, high in reliability and simple to control.
To achieve the above object, an embodiment of a third aspect of the present invention discloses an air conditioner including: an indoor unit; an outdoor unit; and the control device according to the above-described first aspect of the present invention or the air conditioner controller according to the above-described second aspect of the present invention.
The air conditioner provided by the embodiment of the invention is provided with the control device, and the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel and the third control panel are firstly communicated, the working connection with an indoor unit is completed instead of an outdoor unit, and a power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device of the air conditioner has the advantages of simple structure, low cost, strong anti-interference performance, high reliability and simple control.
In order to achieve the above object, an embodiment of a fourth aspect of the present invention discloses a control method of an air conditioner, including the steps of: the first communication unit receives the air conditioner standby instruction, and performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be disconnected; the first communication unit receives an air conditioner starting instruction and performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be conducted so as to enable the second control panel and the second communication unit to be powered on; and the third sending unit is turned off, and meanwhile, the second sending unit works to enable the first communication unit and the second communication unit to carry out half-duplex communication, and the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding action.
According to the control method of the air conditioner, the first communication unit on the first control board is communicated with the third communication unit on the third control board, so that communication is firstly established between the first control board and the third control board, the outdoor unit is replaced to complete working connection with the indoor unit, and a power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control method of the air conditioner is low in implementation cost, strong in anti-interference performance, high in reliability and simple in control.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of a control device according to one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a control device according to another embodiment of the present invention;
FIG. 3 is a detailed circuit schematic of a control device according to one embodiment of the present invention;
fig. 4 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Reference numerals: 100-a control device; 110-a first control board; 120-a second control panel; 130-a third control panel; 111-a first communication unit; 121-a second communication unit; 122-supply circuitry; 131-a third communication unit; 132-a control unit; 1111-a first receiving unit; 1112-a first sending unit; 1211 — a second receiving unit; 1212-a second sending unit; 1311-a third receiving unit; 1312-third transmission unit.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
A control device, an air conditioner controller, an air conditioner, and a control method of the air conditioner according to embodiments of the present invention are described below with reference to fig. 1 to 4.
Fig. 1 is a schematic structural diagram of a control device according to an embodiment of the present invention. The control device can be applied to an air conditioner, such as a variable frequency air conditioner, can effectively reduce the standby power consumption of the air conditioner, and has the advantages of simple structure, strong anti-interference performance, high reliability and simple control.
As shown in fig. 1, the control device 100 includes: a first control board 110, a second control board 120, and a third control board 130.
Specifically, the first control board 110 has a first communication unit 111.
In an embodiment, the first control board 110 can be disposed on an indoor unit of an air conditioner, such as an inverter air conditioner, and can be particularly disposed on an indoor unit controller of the indoor unit, and the first control board 110 is used for implementing communication of the indoor unit.
The second control board 120 has a second communication unit 121 and a power supply circuit 122 for supplying power to the second control board 120.
The third control board 130, the third control board 130 has a third communication unit 131 and a control unit 132 connected to the power supply circuit 122.
In one embodiment of the present invention, as shown in fig. 2, the first communication unit 111 includes a first sending unit 1112 and a first receiving unit 1111, the second communication unit 121 includes a second sending unit 1212 and a second receiving unit 1211, and the third communication unit 131 includes a third sending unit 1312 and a third receiving unit 1311, wherein the first sending unit 1112, the first receiving unit 1111, the second sending unit 1212, the second receiving unit 1211 and the third receiving unit 1311 are connected in series. More specifically, as shown in fig. 2, the first receiving unit 1111, the first transmitting unit 1112, the second receiving unit 1211, and the second transmitting unit 1212 are connected in series, and the third receiving unit 1311 is connected in series to the series loop. It should be noted that the series order here can be adjusted according to the needs of the actual circuit, but the series nature of the current loop does not change. That is, first transmission section 1112, first reception section 1111, second transmission section 1212, second reception section 1211, and third reception section 1311 are connected in series with each other regardless of the connection method.
The third transmitting unit 1312 is connected in parallel with the second transmitting unit 1212 of the second communicating unit 121.
In the communication state, the third sending units 1312 and the second sending units 1212 are connected in parallel, and only one of the third sending units 1312 and the second sending unit 1212 is in an operating state.
In one embodiment, as shown in fig. 3, on the first control board 110, the circuit module B21 and its auxiliary circuits form a first transmitting unit 1112, and the circuit module B22 and its auxiliary circuits form a first receiving unit 1111. On the second control board 120, the circuit module B11 and its subordinate circuits constitute a second transmitting unit 1212, and the circuit module B12 and its subordinate circuits constitute a second receiving unit 1211. On the third control board 130, the circuit module B32 and its subordinate circuits constitute a third receiving unit 1311, and the circuit module B31 and its subordinate circuits constitute a third transmitting unit 1312.
In an embodiment of the present invention, when the first communication unit 111 receives the air conditioner standby command, it performs half-duplex communication with the third communication unit 131, and the control unit 132 controls the power supply circuit 122 to be disconnected; when the first communication unit 111 receives the air conditioner start-up instruction, the first communication unit 111 performs half-duplex communication with the third communication unit 131, and the control unit 132 controls the power supply circuit 122 to be conducted, so that the second control board 120 and the second communication unit 121 are powered on; the third sending unit 1312 is turned off, and the second sending unit 1212 operates to enable the first communication unit 111 and the second communication unit 121 to perform half-duplex communication, and the third communication unit 131 receives the communication information command between the first communication unit 111 and the second communication unit 121 and performs corresponding operations.
It is understood that the operation modes of the air conditioner include two modes, i.e., a start-up, a normal operation state, and a standby state. In the specific embodiment, when the air conditioner is turned on and normally operates, the third communication unit 131 is in a receiving state, that is, the third receiving unit 1311 is in an operating state, and meanwhile, the third sending unit 1312 is continuously in a disabled state, that is, is unavailable; the first communication unit 111 and the second communication unit 121 are continuously in a half-duplex communication state.
When the air conditioner is in standby operation, the second communication unit 121 is in an inoperative state, that is, the second receiving unit 1211 and the second sending unit 1212 are not in operation, and the third communication unit 131 and the first communication unit 111 form a complete current loop communication loop, at this time, the third sending unit 1312 of the third communication unit 131 is in an operative state, and the first communication unit 111 and the third communication unit 131 are in a half-duplex communication state continuously.
In an embodiment, the power supply of the control device 100 is located at the indoor unit side, and the power is supplied to the control device 100 through the first receiving unit 1111 of the first communication unit 111.
In an embodiment of the present invention, the first receiving unit 1111 receives an air conditioner standby instruction and an air conditioner on instruction.
Specifically, the first receiving unit 1111 of the first communication unit 111 is disposed on the indoor unit, and after the air conditioner standby instruction and the air conditioner startup instruction are sent by the air conditioner, the air conditioner standby instruction and the air conditioner startup instruction are received by the first communication unit 111, and specifically, the air conditioner standby instruction and the air conditioner startup instruction can be received by the first receiving unit 1111. When the air conditioner is started, sending an air conditioner starting instruction, and receiving the air conditioner starting instruction by the first communication unit 111; when the air conditioner stops operating and enters a standby state, an air conditioner standby instruction is sent out, and the first communication unit 111 receives the air conditioner standby instruction.
In an embodiment of the present invention, the first receiving unit 1111 receives the air conditioner standby command, and the first transmitting unit 1112, the first receiving unit 1111, the third transmitting unit 1312, and the third receiving unit 1311 form a current loop communication loop. In other words, when the first receiving unit 1111 receives the air conditioner standby command, the first communication unit 111 and the third communication unit 131 form a current loop communication loop and are continuously in the half-duplex communication state.
In an embodiment of the present invention, the first receiving unit 1111 receives the air conditioner on command, and the third sending unit 1312 does not operate. That is, when the air conditioner is turned on, the third communication unit 131 is in a receiving state, i.e., the third receiving unit 1311 is in an operating state, and the third sending unit 1312 is continuously in a disabled state, i.e., is unavailable.
Specifically, when the first communication unit 111 receives the air conditioner on command, the third communication unit 131 is in a receiving state, that is, the third receiving unit 1311 is in an operating state, and meanwhile, the third sending unit 1312 is continuously in a disabled state, that is, it is unavailable; the first communication unit 111 and the second communication unit 121 are continuously in a half-duplex communication state. When the first communication unit 111 receives the air conditioner standby instruction, the second communication unit 121 is in an inoperative state, that is, the second receiving unit 1211 and the second sending unit 1212 are not in operation, and the third communication unit 131 and the first communication unit 111 form a complete current loop communication loop, at this time, the third sending unit 1312 of the third communication unit 131 is in an operative state, and the first communication unit 111 and the third communication unit 131 are in a half-duplex communication state continuously.
In an embodiment, the second control panel 120 and the third control panel 130 may be disposed on an outdoor unit of an air conditioner, such as an inverter air conditioner, and may be disposed on an outdoor unit controller of the outdoor unit, and the second control panel 120 and the third control panel 130 are used for implementing communication and power supply of the outdoor unit.
When receiving the air conditioner standby command, the first communication unit 111 performs half-duplex communication with the third communication unit 131, and the control unit 132 controls the power supply circuit 122 to be turned off, that is, the power supply circuit 122 does not supply power to the second control board 120, and at this time, the outdoor unit is not operated when the power supply is turned off.
When receiving the air conditioner start-up command, the first communication unit 111 performs half-duplex communication with the third communication unit 131, the control unit 132 controls the power supply circuit 122 to be turned on, and the power supply circuit 122 supplies power to the second control board 120 and the second communication unit 121, so that the second control board 120 and the second communication unit 121 are powered on; at this time, the outdoor unit is powered on, the third sending unit 1312 is turned off, the second sending unit 1212 is turned on, the second communication unit 121 and the first communication unit 111 perform half-duplex communication, and the third communication unit 131 receives the communication information command between the first communication unit 111 and the second communication unit 121 and performs corresponding operations.
Specifically, when the air conditioner is turned on and normally operates, the third communication unit 131 is in a receiving state and the sending function thereof is in a disabled state; meanwhile, the first communication unit 111 and the second communication unit 121 are continuously in the half-duplex communication state.
When the air conditioner is in standby operation, the second communication unit 121 is in an inoperative state, the third communication unit 131 and the first communication unit 111 form a complete current loop communication loop, the sending function of the third communication unit 131 is in an available state, and the first communication unit 111 and the third communication unit 131 are continuously in a half-duplex communication state.
In a specific embodiment, the control device 100 is used in an air conditioner, when the air conditioner uses outdoor power supply, the power supply of an outdoor unit controller is to be cut off, the control device 100 is used to cut off the power supply of the outdoor unit controller at a standby time, and meanwhile, the outdoor unit controller keeps information communication with an indoor unit controller, when a start-up instruction of the indoor unit controller is received, the power supply of the outdoor unit controller is switched on to supply power to the outdoor unit, and meanwhile, in order to ensure smooth information communication between the outdoor unit and the indoor unit, the communication content of the outdoor unit controller is monitored timely, and an instruction sent to the control device 100 is received and executed, so that the control device 100 is implemented as a current loop control device with monitoring function.
Therefore, the control device 100 according to the embodiment of the present invention can be applied to an air conditioner, and the first communication unit 111 on the first control panel 110 and the third communication unit 131 on the third control panel 130 are used for communicating with each other, so that the first control panel 110 and the third control panel 130 are firstly communicated with each other, the outdoor unit is replaced by the outdoor unit to complete the working connection with the indoor unit, and the power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit 132 of the third control panel 130 controls the power supply circuit 122 of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the on-off control of the power supply is maintained, and meanwhile, the timely interaction of control instructions between the indoor unit and the outdoor unit can be ensured according to the requirements of user control instructions, thereby ensuring the actual operation control of the whole air conditioner; meanwhile, the control device 100 has the advantages of simple structure, low cost, strong anti-interference performance, high reliability and simple control.
In one embodiment of the present invention, the control unit 132 is further coupled to a plurality of loads for controlling one or more of the plurality of loads to start or stop.
Specifically, as shown in fig. 2, the plurality of loads include, for example, a load 1, a load 2, a load n, specifically, loads such as an outdoor fresh air exchange fan of an air conditioner, and the control unit 132 is connected to the plurality of loads, and during an operation process of the air conditioner, the control unit 132 may control a part or all of the plurality of loads, for example, control a power supply of the load to be turned on or off, and further control the load to be started or stopped, so that functions of the control unit 132 are expanded, an additional controller is not added to control the load, the cost is reduced, and an internal structural space of the air conditioner is optimized.
In the specific embodiment, as shown in fig. 2, the load 1 is taken as an outdoor fresh air exchange fan for example. The control unit 132 can control the on-off of the power supply of the outdoor fresh air exchange fan, and further control the starting or stopping of the outdoor fresh air exchange fan. When a user needs to use the fresh air function without refrigeration and heating requirements, the control unit 132 can directly control the outdoor fresh air exchange fan to start and operate, so that the outdoor fresh air exchange function is realized. The control process of other loads is similar to that of the above, and in order to reduce redundancy, detailed description is omitted here.
In an embodiment, a small control board, i.e., a third control board 130, is added to the control device 100, and is in communication with the first control board 110 and the second control board 120 to control the on/off of the main power supply loop of the outdoor unit in the outdoor power supply mode. At the standby time, the third control panel 130 performs current loop communication with the indoor unit and cuts off the power supply for the outdoor unit, and at the working time, gives the current loop communication authority to the second control panel 120 of the outdoor unit, only retains the function of monitoring communication information, and performs corresponding operation according to the monitored communication information command.
The workflow of the control device 100 can be summarized as follows: when the air conditioner is in a standby state, the first communication unit 111 receives an air conditioner standby instruction, at this time, the third communication unit 131 establishes a communication link with the first communication unit 111 to realize a half-duplex communication state, and simultaneously, the control unit 132 of the third control board 130 disconnects the power supply circuit 122 of the second control board 120, at this time, the second control board 120 located on the outdoor unit is powered off and does not work. When the air conditioner is turned on, the first communication unit 111 of the first control board 110 receives an air conditioner turn-on command, and at this time, the third sending unit 1312 is turned off, and the control unit 132 switches on the power supply circuit 122 of the second control board 120, so that the second control board 120 is powered on and starts to operate. The first communication unit 111 and the second communication unit 121 establish communication, and only the third receiving unit 1311 of the third communication unit 131 can receive the information command in the current loop control apparatus 100 and execute the relevant action according to the information command. Therefore, the standby power consumption of the air conditioner can be effectively reduced, the communication content of the indoor unit and the outdoor unit can be monitored timely, the information exchange between the outdoor unit and the indoor unit is smooth, and the information instruction sent to the control device 100 is received and executed, so that the on-off control of the power supply is maintained, and meanwhile, the timely interaction of the control instructions between the indoor unit and the outdoor unit of the air conditioner can be completed according to the requirements of the control instructions of the user.
In a specific embodiment, the control device 100 firstly establishes a communication link between the third control panel 130 and the first control panel 110, and replaces the outdoor unit to complete the working link with the indoor unit, and disconnects the power supply circuit of the outdoor unit, thereby achieving the purpose of reducing the standby power consumption of the outdoor unit; when the outdoor unit needs to start working, the third control panel 130 controls the power supply of the power supply source of the outdoor unit to recover through a communication instruction and switches to a communication monitoring state, so that the actual operation control of the whole air conditioner is not influenced, and the outdoor unit has the advantages of high reliability and simplicity in control.
In summary, the control device according to the embodiment of the present invention can be applied to an air conditioner, and the first communication unit on the first control board communicates with the third communication unit on the third control board, so that the first control board and the third control board firstly establish a communication link to replace an outdoor unit to complete a working link with an indoor unit, and a power supply circuit of the outdoor unit is disconnected, thereby effectively reducing the standby power consumption of the air conditioner; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device is simple in structure, low in cost, strong in anti-interference performance, high in reliability and simple to control.
A further embodiment of the present invention also provides an air conditioner controller, including: an indoor unit controller for controlling an indoor unit of an air conditioner, an outdoor unit controller for controlling an outdoor unit of an air conditioner, and a control device according to any of the above embodiments of the present invention.
In an embodiment, the first control panel of the control device may be disposed on the indoor unit controller, and the second control panel and the third control panel of the control device may be disposed on the outdoor unit controller.
It should be noted that, when the air conditioner controller performs communication control between the indoor unit and the outdoor unit, a specific implementation manner of the air conditioner controller is similar to that of the control device described in any of the above embodiments of the present invention, please refer to the description of the control device part specifically, and details are not described here again in order to reduce redundancy.
According to the air conditioner controller provided by the embodiment of the invention, the control device is provided, the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel and the third control panel are firstly communicated, the outdoor unit is replaced to complete the working connection with the indoor unit, and the power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device of the air conditioner controller is simple in structure, low in cost, strong in anti-interference performance, high in reliability and simple to control.
In addition, other configurations and functions of the air conditioner controller according to the above-mentioned embodiment of the present invention are known to those skilled in the art, and are not described in detail for reducing redundancy.
A further embodiment of the present invention further provides an air conditioner, which includes an indoor unit, an outdoor unit, and the control device according to any one of the above embodiments of the present invention or the air conditioner controller according to any one of the above embodiments of the present invention.
In a specific embodiment, the air conditioner is, for example, an inverter air conditioner.
The air conditioner controller may include an indoor unit controller and an outdoor unit controller. The indoor unit controller is arranged on the indoor unit and used for controlling the indoor unit. The outdoor unit controller is arranged on the outdoor unit and used for controlling the outdoor unit.
The control device comprises a first control panel, a second control panel and a third control panel, wherein the first control panel can be arranged on the indoor unit controller and used for controlling the indoor unit; the second control panel and the third control panel may be disposed on the outdoor unit controller for outdoor unit.
It should be noted that, when the air conditioner performs communication control between the indoor unit and the outdoor unit, a specific implementation manner of the air conditioner is similar to that of the control device described in any of the above embodiments of the present invention, please refer to the description of the control device part specifically, and details are not described here again in order to reduce redundancy.
The air conditioner provided by the embodiment of the invention is provided with the control device, and the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel and the third control panel are firstly communicated, the working connection with an indoor unit is completed instead of an outdoor unit, and a power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control device of the air conditioner has the advantages of simple structure, low cost, strong anti-interference performance, high reliability and simple control.
In addition, other configurations and functions of the air conditioner according to the above-mentioned embodiment of the present invention are known to those skilled in the art, and are not described in detail to reduce redundancy.
The embodiment of the invention also provides a control method of the air conditioner. The air conditioner is, for example, the air conditioner described in any of the above embodiments of the present invention, that is, the air conditioner includes the control device described in any of the above embodiments of the present invention or the air conditioner controller described in any of the above embodiments of the present invention.
In a specific embodiment, the air conditioner is, for example, an inverter air conditioner.
Fig. 4 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 4, the control method of the air conditioner includes the following steps:
step S1: the first communication unit of the first control board receives the air conditioner standby instruction and performs half-duplex communication with the third communication unit on the third control board, and the control unit of the third control board controls the power supply circuit of the second communication unit of the second control board to be disconnected.
Step S2: the first communication unit receives the air conditioner starting instruction and performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be conducted so as to enable the second control panel and the second communication unit to be powered on.
Step S3: and turning off the third sending unit of the third communication unit, and simultaneously turning on the second sending unit of the second communication unit, so that the first communication unit and the second communication unit carry out half-duplex communication, and the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding action.
In a specific embodiment, the first control board may be disposed on an indoor unit of an air conditioner, such as a variable frequency air conditioner, and may be specifically disposed on an indoor unit controller of the indoor unit, where the first control board is used to implement communication of the indoor unit. The second control panel and the third control panel may be disposed on an outdoor unit of an air conditioner, such as a variable frequency air conditioner, and may be specifically disposed on an outdoor unit controller of the outdoor unit, and the second control panel and the third control panel are used for implementing communication and power supply of the outdoor unit.
When receiving the air conditioner standby instruction, the first communication unit performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be disconnected, namely the power supply circuit does not supply power to the second control panel, and at the moment, the outdoor unit does not work when being powered off.
When the first communication unit receives an air conditioner starting instruction, the first communication unit carries out half-duplex communication with the third communication unit, the control unit controls the conduction of the power supply circuit, and the power supply circuit supplies power to the second control panel and the second communication unit so that the second control panel and the second communication unit are powered on; at the moment, the outdoor unit is powered on, the third sending unit is turned off, the second sending unit is turned on, the second communication unit and the first communication unit perform half-duplex communication, and the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding action.
Specifically, when the air conditioner is started and works normally, the third communication unit is in a receiving state and the sending function of the third communication unit is in a forbidden state; meanwhile, the first communication unit and the second communication unit are continuously in a half-duplex communication state.
When the air conditioner works in a standby mode, the second communication unit is in an inoperative state, the third communication unit and the first communication unit form a complete current loop communication loop, the sending function of the third communication unit is in an available state, and the first communication unit and the third communication unit are continuously in a half-duplex communication state.
In an embodiment of the present invention, the method for controlling an air conditioner further includes: the control unit of the third control panel controls one or more of the plurality of loads to be started or stopped. Wherein a plurality of loads are connected to the control unit.
Specifically, the plurality of loads can be loads such as an outdoor fresh air exchange fan of the air conditioner, the control unit is connected with the plurality of loads, and in the operation process of the air conditioner, the control unit can control part or all of the plurality of loads, such as the connection or disconnection of a power supply of the loads, so as to control the start or stop of the loads, thereby expanding the functions of the control unit, avoiding the addition of an additional controller to control the loads, reducing the cost and optimizing the internal structural space of the air conditioner.
In the specific embodiment, one of the loads is taken as an outdoor fresh air exchange fan for example. The power supply on-off of the outdoor fresh air exchange fan can be controlled by the control unit, and then the outdoor fresh air exchange fan is controlled to start or stop. When a user needs to use the fresh air function without refrigeration and heating requirements, the outdoor fresh air exchange fan can be directly controlled to start and operate through the control unit, and the outdoor fresh air exchange function is realized. The control process of other loads is similar to that of the above, and in order to reduce redundancy, detailed description is omitted here.
In a specific embodiment, the work flow of the control method of the air conditioner can be summarized as follows: when the air conditioner is in standby, the first communication unit receives an air conditioner standby instruction, the third communication unit receives the air conditioner standby instruction, at the moment, a half-duplex communication state is achieved, meanwhile, the control unit of the third control board cuts off a power supply circuit of the second control board, and at the moment, the second control board on the outdoor unit is powered off and does not work. When the air conditioner is started, the first communication unit of the first control panel receives an air conditioner starting instruction, at the moment, the sending function of the third communication unit is closed, and meanwhile, the control unit is connected with the power supply circuit of the second control panel, so that the second control panel is electrified to start working. The first communication unit and the second communication unit establish communication, and the third communication unit can only receive the information instruction in the current loop control device and execute the related action according to the information instruction. Therefore, the standby power consumption of the air conditioner can be effectively reduced, the communication content of the indoor unit and the outdoor unit can be timely monitored, the information exchange between the outdoor unit and the indoor unit is smooth, and the information instruction in the communication process is received and executed, so that the on-off control of the power supply is kept, and meanwhile, the timely interaction of the control instruction between the indoor unit and the outdoor unit of the air conditioner can be guaranteed according to the requirement of the control instruction of a user.
It should be noted that, when the control method of the air conditioner is used to implement communication control between the indoor unit and the outdoor unit of the air conditioner, the specific implementation manner of the control device is similar to that described in any of the above embodiments of the present invention, and please refer to the description of the control device section specifically, and details are not repeated here in order to reduce redundancy.
According to the control method of the air conditioner, the first communication unit on the first control panel is communicated with the third communication unit on the third control panel, so that the first control panel is communicated with the third control panel, the working connection with the indoor unit is completed instead of the outdoor unit, and the power supply circuit of the outdoor unit is disconnected, so that the standby power consumption of the air conditioner can be effectively reduced; when the outdoor unit needs to start working, the control unit of the third control panel controls a power supply circuit of the outdoor unit to supply power to the outdoor unit through an air conditioner starting instruction, and the outdoor unit is switched to a communication monitoring state to ensure that outdoor and indoor information are smoothly exchanged, so that the timely interaction of control instructions between indoor and outdoor units of the air conditioner can be ensured according to the requirements of user control instructions while the on-off control of a power supply is kept, and the actual operation control of the whole air conditioner is ensured; meanwhile, the control method of the air conditioner is low in implementation cost, strong in anti-interference performance, high in reliability and simple in control.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "a plurality" means two or more.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A control device, applied to an air conditioner, comprising:
the first control panel is arranged on an indoor unit controller of the air conditioner and used for realizing communication of an indoor unit of the air conditioner, and the first control panel is provided with a first communication unit;
a second control board having a second communication unit and a power supply circuit for supplying power to the second control board;
the third control board is provided with a third communication unit and a control unit connected with the power supply circuit; the second control panel and the third control panel are arranged on an outdoor unit controller of the air conditioner, the second control panel and the third control panel are used for realizing communication and power supply of an outdoor unit of the air conditioner, the first communication unit comprises a first sending unit and a first receiving unit, the second communication unit comprises a second sending unit and a second receiving unit, and the third communication unit comprises a third sending unit and a third receiving unit, wherein the first sending unit, the first receiving unit, the second sending unit, the second receiving unit and the third receiving unit are connected in series, and the third sending unit is connected with the second sending unit in parallel;
in a communication state, the third sending unit is connected with the second sending unit in parallel, only one sending unit is in a working state, and the other sending unit is in a turn-off state;
the first communication unit performs half-duplex communication with the third communication unit when receiving an air conditioner standby instruction, and the control unit controls the power supply circuit to be disconnected;
the first communication unit performs half-duplex communication with the third communication unit when receiving an air conditioner starting instruction, and the control unit controls the power supply circuit to be conducted so as to enable the second control panel and the second communication unit to be powered on;
and the third sending unit is turned off, meanwhile, the second sending unit works to enable the first communication unit and the second communication unit to carry out half-duplex communication, and the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding action.
2. The control device according to claim 1, wherein the first receiving unit receives the air conditioner standby instruction, and the first transmitting unit, the first receiving unit, the third transmitting unit, and the third receiving unit form a current loop communication loop.
3. The control device according to claim 1, wherein the first receiving unit receives the air conditioner turn-on instruction, and the third transmitting unit does not operate.
4. The control device of claim 1, wherein the control unit is further coupled to a plurality of loads for controlling one or more of the plurality of loads to start or stop.
5. An air conditioner controller, comprising:
an indoor unit controller;
an outdoor unit controller; and
a control device as claimed in any one of claims 1 to 4.
6. An air conditioner, comprising:
an indoor unit;
an outdoor unit; and
the control device according to any one of claims 1 to 4 or the air conditioner controller according to claim 5.
7. A control method of an air conditioner according to claim 6, comprising the steps of:
the first communication unit receives the air conditioner standby instruction, and performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be disconnected;
the first communication unit receives an air conditioner starting instruction and performs half-duplex communication with the third communication unit, and the control unit controls the power supply circuit to be conducted so as to enable the second control panel and the second communication unit to be powered on;
and turning off the third sending unit, and simultaneously turning on the second sending unit to enable the first communication unit and the second communication unit to carry out half-duplex communication, wherein the third communication unit receives a communication information instruction between the first communication unit and the second communication unit and executes corresponding actions.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001041530A (en) * | 1999-07-29 | 2001-02-16 | Daikin Ind Ltd | Air conditioner |
| JP2008101895A (en) * | 2006-10-18 | 2008-05-01 | Samsung Electronics Co Ltd | Air conditioner and control method therefor |
| JP2009097754A (en) * | 2007-10-15 | 2009-05-07 | Toshiba Carrier Corp | Communication control device for air conditioner |
| CN102162669A (en) * | 2010-02-12 | 2011-08-24 | 三星电子株式会社 | Air conditioner |
| JP2013137114A (en) * | 2011-12-28 | 2013-07-11 | Daikin Industries Ltd | Air conditioning device |
| CN104596049A (en) * | 2014-12-26 | 2015-05-06 | 广东美的制冷设备有限公司 | Current loop communication circuit and air conditioner |
| CN205299839U (en) * | 2015-12-31 | 2016-06-08 | 广东美的制冷设备有限公司 | Standby control circuit and air conditioning equipment |
| CN106383478A (en) * | 2016-11-15 | 2017-02-08 | 宁波奥克斯电气股份有限公司 | RS 485 bus-based low-power control method and circuit |
| CN108224707A (en) * | 2017-11-29 | 2018-06-29 | 珠海格力电器股份有限公司 | The air-conditioning internal-external machine means of communication, device and air-conditioning |
| CN109270862A (en) * | 2018-10-01 | 2019-01-25 | 珠海格力电器股份有限公司 | Apparatus control method, control device and the equipment using the control device |
| CN110500696A (en) * | 2019-08-14 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of control circuit and air-conditioning |
| CN211925953U (en) * | 2020-04-21 | 2020-11-13 | 珠海拓芯科技有限公司 | Low-power consumption control system and air conditioner |
| CN112083669A (en) * | 2020-08-11 | 2020-12-15 | 海信（山东）空调有限公司 | Household appliance, storage medium and method for controlling communication module of household appliance |
| CN214536732U (en) * | 2021-01-19 | 2021-10-29 | 海信（广东）空调有限公司 | Control device, air conditioner controller and air conditioner |
-
2021
- 2021-01-19 CN CN202110069414.XA patent/CN112833520B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001041530A (en) * | 1999-07-29 | 2001-02-16 | Daikin Ind Ltd | Air conditioner |
| JP2008101895A (en) * | 2006-10-18 | 2008-05-01 | Samsung Electronics Co Ltd | Air conditioner and control method therefor |
| JP2009097754A (en) * | 2007-10-15 | 2009-05-07 | Toshiba Carrier Corp | Communication control device for air conditioner |
| CN102162669A (en) * | 2010-02-12 | 2011-08-24 | 三星电子株式会社 | Air conditioner |
| JP2013137114A (en) * | 2011-12-28 | 2013-07-11 | Daikin Industries Ltd | Air conditioning device |
| CN104596049A (en) * | 2014-12-26 | 2015-05-06 | 广东美的制冷设备有限公司 | Current loop communication circuit and air conditioner |
| CN205299839U (en) * | 2015-12-31 | 2016-06-08 | 广东美的制冷设备有限公司 | Standby control circuit and air conditioning equipment |
| CN106383478A (en) * | 2016-11-15 | 2017-02-08 | 宁波奥克斯电气股份有限公司 | RS 485 bus-based low-power control method and circuit |
| CN108224707A (en) * | 2017-11-29 | 2018-06-29 | 珠海格力电器股份有限公司 | The air-conditioning internal-external machine means of communication, device and air-conditioning |
| CN109270862A (en) * | 2018-10-01 | 2019-01-25 | 珠海格力电器股份有限公司 | Apparatus control method, control device and the equipment using the control device |
| CN110500696A (en) * | 2019-08-14 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of control circuit and air-conditioning |
| CN211925953U (en) * | 2020-04-21 | 2020-11-13 | 珠海拓芯科技有限公司 | Low-power consumption control system and air conditioner |
| CN112083669A (en) * | 2020-08-11 | 2020-12-15 | 海信（山东）空调有限公司 | Household appliance, storage medium and method for controlling communication module of household appliance |
| CN214536732U (en) * | 2021-01-19 | 2021-10-29 | 海信（广东）空调有限公司 | Control device, air conditioner controller and air conditioner |
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|---|---|
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