CN114061124A - Control circuit, control method, equipment and storage medium for air conditioner outdoor unit - Google Patents
Control circuit, control method, equipment and storage medium for air conditioner outdoor unit Download PDFInfo
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- CN114061124A CN114061124A CN202111201650.9A CN202111201650A CN114061124A CN 114061124 A CN114061124 A CN 114061124A CN 202111201650 A CN202111201650 A CN 202111201650A CN 114061124 A CN114061124 A CN 114061124A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004378 air conditioning Methods 0.000 claims abstract description 48
- 238000012937 correction Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 13
- 238000013461 design Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 7
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000012938 design process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The embodiment of the application discloses a control method, which comprises the following steps: determining the working mode of the air conditioning equipment; determining a first state of a first relay and a second state of a second relay included in the control circuit of the outdoor unit of the air conditioner based on the working mode; controlling a connection state of the first relay based on the first state; controlling a connection state of the second relay based on the second state. The embodiment of the application also discloses a control circuit, equipment and a storage medium for the outdoor unit of the air conditioner.
Description
Technical Field
The present disclosure relates to the field of air conditioning technologies, and in particular, to a control circuit, a control method, an apparatus, and a storage medium for an outdoor unit of an air conditioner.
Background
At present, air conditioning equipment has a function of heating or cooling according to the needs of users, and is widely installed and applied in various application scenes. With the wide application of air conditioning equipment, the requirements of users on the air conditioning equipment are higher and higher. In various environments such as home, work, and the like, there are more and more air conditioners installed, and it is a trend that air conditioners are miniaturized to reduce the space occupied by the air conditioners. In the miniaturization design process of the existing air conditioning equipment, the miniaturization design of an indoor unit electric control circuit is particularly important. At present, the common technical scheme in the miniaturization design process of the electric control circuit of the indoor unit mainly comprises the following steps: selecting smaller packaged components and/or optimizing circuit to reduce components, etc.
However, when the conventional technical scheme adopts smaller packaged components, the production cost is increased, and the reliability of the control circuit of the indoor unit is low due to the fact that the optimized circuits reduce the components, so that the scheme for improving the miniaturization design of the air conditioning equipment by effectively aiming at the electric control circuit of the indoor unit does not exist at present.
Content of application
In order to solve the above technical problems, embodiments of the present application are intended to provide a control circuit, a control method, an apparatus, and a storage medium for an outdoor unit of an air conditioner, so as to solve the problem that there is no scheme for improving an indoor unit electric control circuit to improve a miniaturization design of an air conditioner.
The technical scheme of the application is realized as follows:
in a first aspect, a control circuit for an outdoor unit of an air conditioner includes: the circuit protection device comprises a first relay, a thermistor, a second relay, a first rectifying unit, a rectifying bridge, a circuit protection unit, a second rectifying unit, a switching power supply module and an outdoor unit controller; wherein:
the power supply input end of the first relay is connected with a first external power supply input end, and the power supply output end of the first relay is connected with a first power supply input end of the rectifier bridge;
the power supply input end of the thermistor is connected with the first external power supply input end, the power supply output end of the thermistor is connected with the power supply input end of the second relay, and the power supply output end of the thermistor is also connected with the power supply input end of the first rectifying unit;
the power supply output end of the second relay is connected with the first power supply input end of the rectifier bridge;
the power supply output end of the first rectifying unit is connected with the power supply input end of the switching power supply module;
a second power input end of the rectifier bridge is connected with a second external power input end, a direct-current positive output end of the rectifier bridge is connected with a power input end of the circuit protection unit, and a direct-current negative output end of the rectifier bridge is connected with a power output end of the circuit protection unit;
the power supply input end of the circuit protection unit is connected with the power supply input end of the second rectifying unit;
the power supply input end of the second rectifying unit is grounded, and the power supply output end of the second rectifying unit is connected with the power supply input end of the switching power supply module;
the power output end of the switching power supply module is connected with the power input end of the outdoor unit controller;
and the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit.
In a second aspect, a control method is applied to an air conditioner including the air conditioner outdoor unit control circuit and an air conditioner indoor unit control circuit not including a relay, and includes:
determining the working mode of the air conditioning equipment;
determining a first state of a first relay and a second state of a second relay included in the control circuit of the outdoor unit of the air conditioner based on the working mode;
controlling a connection state of the first relay based on the first state;
controlling a connection state of the second relay based on the second state.
In a third aspect, an air conditioning apparatus includes: the control circuit of the outdoor unit of the air conditioner, the control circuit of the indoor unit of the air conditioner without the relay, the indoor unit and the outdoor unit are arranged in sequence; wherein:
the control circuit of the outdoor unit of the air conditioner is arranged in the outdoor unit and used for realizing the control method of any one of the preceding items so as to control the work of the outdoor unit;
the air-conditioning indoor unit control circuit is arranged in the indoor unit, is used for controlling the work of the indoor unit, and is in communication connection with the air-conditioning outdoor unit control circuit, so that the indoor unit and the outdoor unit work in a matched mode, and the air-conditioning function is achieved.
In a third aspect, a storage medium has stored thereon a control program which, when executed by a processor, implements the steps of the control method according to any one of the preceding claims.
In the embodiment of the application, by connecting the power input end of the first relay with the first external power input end, the power output end of the first relay is connected with the first power input end of the rectifier bridge, the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, the power output end of the thermistor is further connected with the power input end of the first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of the switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, and the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifier unit, the power input end of the second rectifier unit is grounded, the power output end of the second rectifier unit is connected with the power input end of the switch power module, the power output end of the switch power module is connected with the power input end of the outdoor unit controller, the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, therefore, the two relays arranged on the air conditioner outdoor unit control circuit replace the relays arranged on the air conditioner indoor unit control circuit and used for controlling the energy consumption of air conditioning equipment, and the space occupied by the relays in the air conditioner indoor unit control circuit is effectively reduced, the problem of do not have effectively to the indoor set electric control circuit at present and improve the scheme that realizes the miniaturized design of air conditioning equipment is solved, an air condensing units control circuit that can control the indoor set has been proposed to reduce the shared space of indoor set electric control circuit, and then can realize the miniaturization of air conditioning equipment.
Drawings
Fig. 1 is a schematic structural diagram of a control circuit of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another control circuit of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a first flowchart of a control method according to an embodiment of the present disclosure;
fig. 4 is a second flowchart illustrating a control method according to an embodiment of the present application;
fig. 5 is a third schematic flowchart of a control method according to an embodiment of the present application;
fig. 6 is a circuit diagram of an air conditioner outdoor unit control circuit according to an embodiment of the present disclosure;
fig. 7 is a fourth schematic flowchart of a control method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides an air conditioner outdoor unit control circuit, as shown in fig. 1, the circuit includes: a first relay 101, a thermistor 102, a second relay 103, a first rectifying unit 104, a rectifying bridge 105, a circuit protection unit 106, a second rectifying unit 107, a switching power supply module 108, and an outdoor unit controller 109; wherein:
the power input end of the first relay 101 is connected with the first external power input end, and the power output end of the first relay 101 is connected with the first power input end of the rectifier bridge 105;
the power supply input end of the thermistor 102 is connected with the first external power supply input end 21, the power supply output end of the thermistor 102 is connected with the power supply input end of the second relay 103, and the power supply output end of the thermistor 102 is also connected with the power supply input end of the first rectifying unit 104;
the first external power input end may be a power input end of commercial alternating current, for example, a zero line input end of commercial alternating current, and the thermistor may specifically be a semiconductor material or a component (PTC) having a large Positive Temperature Coefficient. The thermistor is used for preventing the input current from suddenly increasing to cause the damage of a module connected behind the thermistor.
The power output end of the second relay 103 is connected with the first power input end of the rectifier bridge 105;
the power output end of the first rectifying unit 104 is connected with the power input end of the switching power supply module 108;
wherein the first rectifying unit may be a diode element.
A second power input end of the rectifier bridge 105 is connected with the second external power input end 22, a direct current positive output end of the rectifier bridge 105 is connected with a power input end of the circuit protection unit 106, and a direct current negative output end of the rectifier bridge 105 is connected with a power output end of the circuit protection unit 106;
the second external power input terminal may be a different one of the mains ac power supply from the first external power input terminal, for example, may be a live input of the mains ac power supply. The circuit protection unit can be used for protecting a circuit so as to prevent the damage of components in the control circuit of the air conditioner outdoor unit such as the rectifier bridge and the like due to larger electric current at the moment of closing the relay.
The power input end of the circuit protection unit 106 is connected with the power input end of the second rectifying unit 107;
the second rectifying unit may be a diode component.
The power input end of the second rectifying unit 107 is grounded, and the power output end of the second rectifying unit 107 is connected with the power input end of the switching power supply module 108;
the power output end of the switching power supply module 108 is connected with the power input end of the outdoor unit controller 109;
the signal input terminal of the outdoor unit controller 109 is also connected to the signal output terminal of the corresponding indoor unit control circuit 3.
The outdoor Unit controller may be a Micro Controller Unit (MCU). The indoor unit control circuit is a control circuit for controlling the work of the air-conditioning indoor unit, can be in communication connection with third-party control equipment such as remote control equipment of the air-conditioning equipment, an intelligent mobile terminal, an intelligent central control platform and the like so as to receive a control instruction of a user, and can also be used for receiving or processing the control instruction sent by a physical key arranged on the air-conditioning equipment indoor unit or a corresponding virtual button on a corresponding display screen and carrying out corresponding response processing. The indoor unit control circuit does not comprise relay equipment, so that the volume of the indoor unit control circuit of the indoor unit can be obviously reduced, and the miniaturization design of the indoor unit is facilitated.
In the embodiment of the application, the power input end of a first relay is connected with the first external power input end, the power output end of the first relay is connected with the first power input end of a rectifier bridge, the power input end of a thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of a second relay, the power output end of the thermistor is also connected with the power input end of a first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of a switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of a circuit protection unit, and the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit, the power input end of the second rectifying unit is grounded, the power output end of the second rectifying unit is connected with the power input end of the switching power module, the power output end of the switching power module is connected with the power input end of the outdoor unit controller, and the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, so that the space occupied by the relay in the indoor unit control circuit of the air conditioner is effectively reduced by arranging two relays on the outdoor unit control circuit of the air conditioner to replace the relay which is arranged on the indoor unit control circuit of the air conditioner and is used for controlling the energy consumption of the air conditioner, and the problem that no scheme which is effectively improved for the indoor unit control circuit to improve the miniaturization design of the air conditioner is solved at present, the control circuit of the outdoor unit of the air conditioner can control the indoor unit, so that the space occupied by the electric control circuit of the indoor unit is reduced, and the miniaturization of the air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal instruction sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiment, in other embodiments of the present application, if the outdoor unit controller receives a first control signal sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in the first target mode, the outdoor unit controller controls the first relay to be in the off state, and controls the second relay to be in the on state, so that the circuit protection unit is in the charging state;
the circuit protection unit may be a large capacitor, for example, a polar capacitor. The first target mode may be a mode in which the indoor unit control circuit controls the air conditioning device to operate, that is, a corresponding operating mode of the indoor unit control circuit of the air conditioning device when the air conditioning device is at least in a cooling mode or a heating mode, and when the outdoor unit controller receives the first control signal, the outdoor unit controller controls the first relay to be in an off state, and controls the second relay to be in an on state, and after operating current provided by the commercial power supply can pass through the thermistor, the circuit protection unit is charged.
And if the outdoor unit controller receives a second control signal which is sent by the indoor unit control circuit and used for indicating the indoor unit control circuit to be in the second target mode, the outdoor unit controller controls the first relay to be in the off state and controls the second relay to be in the off state.
Wherein the second target mode includes at least one of: a sleep mode or a power off mode.
In this embodiment of the application, after the indoor unit control circuit and the outdoor unit control circuit are connected to the external power supply, that is, powered on, the indoor unit control circuit does not receive any control instruction for controlling the indoor unit control circuit to operate, for example, when a cooling or heating instruction is issued, the indoor unit control circuit is in a sleep mode, at this time, the indoor unit control circuit does not send any signal to the outdoor unit control circuit, at this time, the corresponding second control signal is an idle signal, and the outdoor unit control circuit controls the first relay and the second relay to be in an off state. Or when the indoor unit control circuit receives a control instruction for controlling the indoor unit circuit to shut down, the corresponding second control signal is a shutdown signal, the air conditioning equipment enters a shutdown mode at the moment, and the air conditioning outdoor unit control circuit controls the first relay and the second relay to be in a disconnected state. Like this, when air conditioner outdoor unit control circuit controlled first relay and second relay and all was in the off-state, made the city alternating current pass through thermistor, transmitted to switching power supply module through first rectifier unit, made switching power supply module with city alternating current conversion for low voltage power supply for example 5 volts (V), for the off-premises station controller provides working power supply, like this, other power consumptive modules of being connected with first relay and second relay are out of work, can effectively practice thrift the consumption of power.
Based on the foregoing embodiment, in other embodiments of the present application, when the outdoor unit controller receives the first control signal, and the first relay is in the off state, and the second relay is in the on state, if the outdoor unit controller detects that the charging capacity of the circuit protection unit reaches the preset capacity, the first relay is controlled to be in the on state, and the second relay is controlled to be in the off state.
In this embodiment of the application, the preset electric quantity may refer to a maximum electric quantity capacity of the circuit protection unit, that is, after working current provided by an ac power supply outside the market may pass through the thermistor, the circuit protection unit is charged, until the outdoor unit controller detects that the circuit protection unit is fully charged, the first relay is controlled to be in a conducting state, and the second relay is controlled to be in a disconnecting state, so as to perform short-circuit processing on the thermistor, increase current flowing into a subsequent working module, and enable the subsequent working module to rapidly enter a normal working state, at this time, the working current of the outdoor unit controller is provided by the second rectifying unit connected to the switching power supply module.
Based on the foregoing embodiment, referring to fig. 2, the circuit further includes: a power factor correction unit 110; wherein:
the first power input end of the power factor correction unit 110 is connected with the direct current positive output end of the rectifier bridge 105, the second power input end of the power factor correction unit 110 is connected with the direct current negative output end of the rectifier bridge 105, the first power output end of the power factor correction unit 110 is connected with the power input end of the circuit protection unit 106, and the second power output end of the power factor correction unit 110 is connected with the power output end of the circuit protection unit 106, so that the power factor correction unit is arranged between the rectifier bridge and the circuit protection unit.
The Power Factor Correction (PFC) unit is configured to correct a Power Factor.
Based on the foregoing embodiments, in other embodiments of the present application, as shown in fig. 2, the circuit further includes: a smart power module 111; wherein:
the power control terminal of the intelligent power module 111 is connected to the power input terminal of the second rectifying unit 107.
The built-in driving and protecting circuit of the Intelligent Power Module (IPM) can make the control circuit of the outdoor unit of the air conditioner simple and reliable, effectively shorten the system development time, improve the self-protecting capability of the control circuit of the outdoor unit of the air conditioner under the fault, effectively ensure other chips in the control circuit of the outdoor unit of the air conditioner and reduce the possibility of damaging other chips.
Based on the foregoing embodiments, in other embodiments of the present application, as shown in fig. 2, the circuit further includes: a current loop 112; wherein:
the current loop 112 is disposed between the signal input terminal of the outdoor unit controller 109 and the signal output terminal of the indoor unit control circuit 3.
In the embodiment of the application, the current loop is used for ensuring the signal quality of a transmission signal between the control circuit of the indoor unit and the controller of the outdoor unit and reducing noise interference in the signal transmission process.
Based on the foregoing embodiments, in other embodiments of the present application, as shown in fig. 2, the circuit further includes: an electromagnetic compatibility unit 113; wherein:
a first power input terminal of the electromagnetic compatibility unit 113 is connected to the first external power input terminal 21, a second power input terminal of the electromagnetic compatibility unit 113 is connected to the second external power input terminal 22, a first power output terminal of the electromagnetic compatibility unit 113 is connected to the first power input terminal of the rectifier bridge 105, and a second power output terminal of the electromagnetic compatibility unit 113 is connected to the power input terminal of the first relay 101.
In the embodiment of the application, the electromagnetic compatibility unit is used for improving the resistance of the control circuit of the outdoor unit of the air conditioner to electromagnetic interference in the current environment and reducing the electromagnetic interference generated by the control circuit of the outdoor unit of the air conditioner.
It should be noted that, for the descriptions of the same units and modules in this embodiment as in other embodiments, reference may be made to the descriptions in other embodiments, and details are not described here again.
In the embodiment of the application, the power input end of a first relay is connected with the first external power input end, the power output end of the first relay is connected with the first power input end of a rectifier bridge, the power input end of a thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of a second relay, the power output end of the thermistor is also connected with the power input end of a first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of a switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of a circuit protection unit, and the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit, the power input end of the second rectifying unit is grounded, the power output end of the second rectifying unit is connected with the power input end of the switching power module, the power output end of the switching power module is connected with the power input end of the outdoor unit controller, and the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, so that the space occupied by the relay in the indoor unit control circuit of the air conditioner is effectively reduced by arranging two relays on the outdoor unit control circuit of the air conditioner to replace the relay which is arranged on the indoor unit control circuit of the air conditioner and is used for controlling the energy consumption of the air conditioner, and the problem that no scheme which is effectively improved for the indoor unit control circuit to improve the miniaturization design of the air conditioner is solved at present, the control circuit of the outdoor unit of the air conditioner can control the indoor unit, so that the space occupied by the electric control circuit of the indoor unit is reduced, and the miniaturization of the air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal instruction sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, embodiments of the present application provide a control method, which is applied to an air conditioner including an outdoor unit control circuit of an air conditioner as shown in fig. 1 or fig. 2 and an indoor unit control circuit of an air conditioner without including a relay, and as shown in fig. 3, the method includes the following steps:
In the embodiment of the present application, the operation mode of the air conditioner may be a shutdown mode, a sleep mode, or an operation mode, and the operation mode may include at least a cooling mode or a heating mode.
In this application embodiment, under different operating modes, a first state of a first relay and a second state of a second relay are different, the first state of the first relay may be an off state or an on state, when the first relay is in the off state, the first relay disconnects the path, at this time, a current signal cannot be output through the first relay, when the first relay is in the on state, the first relay is equivalent to a wire, at this time, current information may be transmitted from the first relay to a module to which the first relay is connected.
In the embodiment of the application, when the first state is the same as the current connection state of the first relay, the current connection state of the first relay is maintained, and when the first state is different from the current connection state of the first relay, the first relay is controlled to switch the current connection state to the first state.
And step 404, controlling the connection state of the second relay based on the second state.
In the embodiment of the application, when the second state is the same as the current connection state of the second relay, the current connection state of the second relay is maintained, and when the second state is different from the current connection state of the second relay, the second relay is controlled to switch the current connection state to the second state.
In the embodiment of the application, the working mode of the air conditioner is determined, the first relay and the first state which are included in the control circuit of the outdoor unit of the air conditioner and the second state of the second relay are determined based on the working mode, the connection state of the first relay is controlled based on the first state, and the connection state of the second relay is controlled based on the second state, so that the two relays are arranged on the control circuit of the outdoor unit of the air conditioner to replace the relay which is arranged on the control circuit of the indoor unit of the air conditioner and is used for controlling the energy consumption of the air conditioner, the space occupied by the relay in the control circuit of the indoor unit of the air conditioner is effectively reduced, the problem that the existing scheme for improving the electric control circuit of the indoor unit to realize the miniaturization design of the air conditioner is not effectively improved is solved, and the control circuit of the outdoor unit of the air conditioner capable of controlling the indoor unit is provided, therefore, the space occupied by the electric control circuit of the indoor unit is reduced, and the miniaturization of the air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal instruction sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, embodiments of the present application provide a control method, which is applied to an air conditioner including an outdoor unit control circuit of an air conditioner as shown in fig. 1 or fig. 2 and an indoor unit control circuit of an air conditioner without including a relay, and as shown in fig. 4, the method includes the following steps:
In this embodiment of the present application, the working mode of the air conditioning equipment may be determined after the control circuit of the indoor unit of the air conditioner receives an operation instruction corresponding to a user. The operation instruction corresponding to the user may be obtained by the user operating a physical button set on the air conditioning equipment, may also be obtained by the user operating a virtual button set on a display screen set on the air conditioning equipment, and may also be obtained by the user operating a third-party control device, such as a remote control device, an intelligent mobile terminal device, and the like.
After the air conditioning equipment executes step 501, step 502, step 504 to step 505, or step 503 to step 505 can be selected and executed according to the working mode, if the working mode is the first target mode, step 502, step 504 to step 505 are selected and executed, if the working mode is the second target mode, step 503 to step 505 are selected and executed.
In the embodiment of the present application, when the first state of the first relay is an off state and the second state of the second relay is an on state, the IPM module, the PFC module, and the like in the control circuit of the outdoor unit of the air conditioner are connected to the circuit, so as to provide a protection effect for the control circuit of the outdoor unit of the air conditioner, and provide stable working voltage and current for the outdoor unit and the like.
In the embodiment of the application, in the second target mode, it is determined that the first state of the first relay is the off state, and the second state of the second relay is the off state, at this time, power consuming modules such as an IPM module and a PFC module in the control circuit of the outdoor unit of the air conditioner are in the off state, and stop working, so that energy consumption of the air conditioner can be realized.
And step 504, controlling the connection state of the first relay based on the first state.
And 505, controlling the connection state of the second relay based on the second state.
Based on the foregoing embodiments, in other embodiments of the present application, referring to fig. 5, when the air conditioning equipment selects to execute step 502 and steps 504 to 505, after the air conditioning equipment executes step 505, the air conditioning equipment is further configured to execute steps 506 to 508:
And step 507, controlling the connection state of the first relay to be switched to a conduction state.
And step 508, controlling the connection state of the second relay to be switched to the disconnection state.
In this embodiment, the circuit protection unit may be a polar capacitor, and the preset electric quantity may be an empirical value obtained through a large number of experiments, and in some cases, may be a maximum capacitor capacity that the polar capacitor can store. When the working mode is a first target mode, the connection state of the first relay is a disconnection state, and the connection state of the second relay is a conduction state, when the charging electric quantity of a circuit protection unit in an air conditioner outdoor unit control circuit is detected to reach a preset electric quantity, the first relay is switched to the conduction state, and when the connection state of the second relay is switched to the disconnection state, the second relay can be a thermistor short circuit, so that the current flowing into a PFC module is increased, a subsequent module connected with the PFC module can rapidly enter a normal working state, and the power supply path of the switching power supply module is provided by the second rectifying unit.
Based on the foregoing embodiments, the present application provides a specific connection schematic diagram of a control circuit of an outdoor unit of an air conditioner, which can be specifically shown in fig. 6. A control method based on the control circuit of the outdoor unit of the air conditioner shown in fig. 6 can be seen from fig. 7, and includes the following steps:
The control instruction is sent to the MCU of the air conditioner outdoor unit control circuit by the indoor unit control circuit through the current loop.
The switching power supply module obtains current through a path formed by the PTC 102 and the freewheeling diode D3107, and provides operating current to the MCU. Note that, in a general case, relays RY1 and RY2 are normally in a default off state, and at this time, the MCU only needs to control relays RY1 and RY2 to be on, and an operation of controlling relays RY1 and RY2 to be in an off state can be achieved. At this time, the MCU may be in a sleep mode to perform a low power mode of operation.
Thus, RY1 is kept in an off state, and when RY2 is controlled to be on, current flows into the PFC circuit through the PTC, so that sudden increase of current can be prevented by the PTC from damaging the PFC circuit at the subsequent stage, and shock resistance is achieved. At this time, the PFC circuit and IPM module are powered through the PTC and RY2 paths.
In step 604, after the inductor capacitor 106 of the post-PFC circuit 110 is fully charged, the MCU109 controls RY1101 to be in a conducting state and controls RY 2103 to be in a disconnecting state.
The inductor capacitor can be fully charged in a short time, usually several seconds. When the MCU109 controls RY1101 to be in a conducting state and RY 2103 to be in an off state, the power supply states of the PFC circuit and the IPM module are not changed and operate normally, and at this time, the switching power supply module 108 is powered by the freewheeling diode D3107.
In step 606, if the control instruction indicates that the shutdown instruction is executed, the MCU109 controls the relays RY1101 and RY 2103 to be in the off state.
After the MCU executes step 606, it repeats step 601.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
In the embodiment of the application, the working mode of the air conditioner is determined, the first relay and the first state which are included in the control circuit of the outdoor unit of the air conditioner and the second state of the second relay are determined based on the working mode, the connection state of the first relay is controlled based on the first state, and the connection state of the second relay is controlled based on the second state, so that the two relays are arranged on the control circuit of the outdoor unit of the air conditioner to replace the relay which is arranged on the control circuit of the indoor unit of the air conditioner and is used for controlling the energy consumption of the air conditioner, the space occupied by the relay in the control circuit of the indoor unit of the air conditioner is effectively reduced, the problem that the existing scheme for improving the electric control circuit of the indoor unit to realize the miniaturization design of the air conditioner is not effectively improved is solved, and the control circuit of the outdoor unit of the air conditioner capable of controlling the indoor unit is provided, therefore, the space occupied by the electric control circuit of the indoor unit is reduced, and the miniaturization of the air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal instruction sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, embodiments of the present application provide an air conditioning apparatus, and as shown in fig. 8, the air conditioning apparatus 7 may include: the outdoor unit control circuit 1 of fig. 1 or fig. 2, the indoor unit control circuit 3 of the air conditioner not including the relay, the indoor unit 71, and the outdoor unit 72; wherein:
the air conditioner outdoor unit control circuit 1 is disposed in the outdoor unit 72, and is configured to implement a control method implementation process provided in any one of the above method embodiments such as fig. 3 to 5, which is not described herein again to control the operation of the outdoor unit 72;
the air-conditioning indoor unit control circuit 3 is provided in the indoor unit 71, and is used for controlling the operation of the indoor unit 71, and is in communication connection with the air-conditioning outdoor unit control circuit 1, so that the indoor unit 71 and the outdoor unit 72 work cooperatively to realize an air-conditioning function.
Based on the foregoing embodiments, embodiments of the present application provide a computer-readable storage medium, which is referred to as a storage medium for short, where the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the implementation processes of the control methods provided in the embodiments corresponding to fig. 3 to 5, which are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.
Claims (13)
1. An air conditioner outdoor unit control circuit, characterized in that, the circuit includes: the circuit protection device comprises a first relay, a thermistor, a second relay, a first rectifying unit, a rectifying bridge, a circuit protection unit, a second rectifying unit, a switching power supply module and an outdoor unit controller; wherein:
the power supply input end of the first relay is connected with a first external power supply input end, and the power supply output end of the first relay is connected with a first power supply input end of the rectifier bridge;
the power supply input end of the thermistor is connected with the first external power supply input end, the power supply output end of the thermistor is connected with the power supply input end of the second relay, and the power supply output end of the thermistor is also connected with the power supply input end of the first rectifying unit;
the power supply output end of the second relay is connected with the first power supply input end of the rectifier bridge;
the power supply output end of the first rectifying unit is connected with the power supply input end of the switching power supply module;
a second power supply input end of the rectifier bridge is connected with a second external power supply input end, a direct current positive output end of the rectifier bridge is connected with a power supply input end of the circuit protection unit, and a direct current negative output end of the rectifier bridge is connected with a power supply output end of the circuit protection unit;
the power supply input end of the circuit protection unit is connected with the power supply input end of the second rectifying unit;
the power supply input end of the second rectifying unit is grounded, and the power supply output end of the second rectifying unit is connected with the power supply input end of the switching power supply module;
the power output end of the switching power supply module is connected with the power input end of the outdoor unit controller;
and the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit.
2. The circuit of claim 1,
if the outdoor unit controller receives a first control signal which is sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in a first target mode, the outdoor unit controller controls the first relay to be in a disconnected state and controls the second relay to be in a connected state, so that the circuit protection unit is in a charging state;
and if the outdoor unit controller receives a second control signal which is sent by the indoor unit control circuit and used for indicating the indoor unit control circuit to be in a second target mode, the outdoor unit controller controls the first relay to be in a disconnected state and controls the second relay to be in a disconnected state.
3. The circuit of claim 2,
and under the condition that the outdoor unit controller receives the first control signal, the first relay is in a disconnected state, and the second relay is in a connected state, if the outdoor unit controller detects that the charging electric quantity of the circuit protection unit reaches a preset electric quantity, the first relay is controlled to be in the connected state, and the second relay is controlled to be in the disconnected state.
4. The circuit of any of claims 1 to 3, further comprising: a power factor correction unit; wherein:
the first power input end of the power factor correction unit is connected with the direct current positive output end of the rectifier bridge, the second power input end of the power factor correction unit is connected with the direct current negative output end of the rectifier bridge, the first power output end of the power factor correction unit is connected with the power input end of the circuit protection unit, and the second power output end of the power factor correction unit is connected with the power output end of the circuit protection unit, so that the power factor correction unit is arranged between the rectifier bridge and the circuit protection unit.
5. The circuit of any of claims 1 to 3, further comprising: an intelligent power module; wherein:
and the power control end of the intelligent power module is connected with the power input end of the second rectifying unit.
6. The circuit of any of claims 1 to 3, further comprising: a current loop; wherein:
the current loop is arranged between the signal input end of the outdoor unit controller and the signal output end of the indoor unit control circuit.
7. The circuit of any of claims 1 to 3, further comprising: an electromagnetic compatibility unit; wherein:
the first power input end of the electromagnetic compatibility unit is connected with the first external power input end, the second power input end of the electromagnetic compatibility unit is connected with the second external power input end, the first power output end of the electromagnetic compatibility unit is connected with the first power input end of the rectifier bridge, and the second power output end of the electromagnetic compatibility unit is connected with the power input end of the first relay.
8. The circuit of claim 2,
the second target mode includes at least one of: a sleep mode and a shutdown mode.
9. A control method applied to an air conditioner including the control circuit of the outdoor unit of an air conditioner according to any one of claims 1 to 8 and a control circuit of an indoor unit of an air conditioner not including a relay, the method comprising:
determining the working mode of the air conditioning equipment;
determining a first state of a first relay and a second state of a second relay included in the control circuit of the outdoor unit of the air conditioner based on the working mode;
controlling a connection state of the first relay based on the first state;
controlling a connection state of the second relay based on the second state.
10. The method of claim 9, wherein the determining a first state of a first relay and a second state of a second relay included in the control circuit of the outdoor unit of the air conditioner based on the operation mode comprises:
if the working mode is a first target mode, determining that the first state of the first relay is a disconnected state and the second state of the second relay is a connected state;
and if the working mode is a second target mode, determining that the first state of the first relay is a disconnected state and the second state of the second relay is a disconnected state.
11. The method of claim 10, further comprising:
when the working mode is the first target mode, the connection state of the first relay is the disconnection state, and the connection state of the second relay is the conduction state, if it is detected that the charging electric quantity of a circuit protection unit in the control circuit of the outdoor unit of the air conditioner reaches a preset electric quantity, determining that the third state of the first relay is the conduction state, and the fourth state of the second relay is the disconnection state;
controlling the connection state of the first relay to be switched to the conduction state;
and controlling the connection state of the second relay to be switched to the disconnection state.
12. An air conditioning apparatus, characterized by comprising: the outdoor unit control circuit of claim 1 to 8, the indoor unit control circuit of an air conditioner not including a relay, the indoor unit, and the outdoor unit; wherein:
the outdoor unit control circuit of the air conditioner is disposed in the outdoor unit, and is configured to implement the control method according to any one of claims 9 to 11 to control the operation of the outdoor unit;
the air-conditioning indoor unit control circuit is arranged in the indoor unit, is used for controlling the work of the indoor unit, and is in communication connection with the air-conditioning outdoor unit control circuit, so that the indoor unit and the outdoor unit work in a matched mode, and the air-conditioning function is achieved.
13. A storage medium, characterized in that the storage medium has stored thereon a control program which, when executed by a processor, implements the steps of the control method according to any one of claims 9 to 11.
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| CN116026000A (en) * | 2022-12-12 | 2023-04-28 | 珠海格力电器股份有限公司 | Air conditioner electric heating treatment method and device, air conditioner and storage medium |
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