CN113551386A - Control method and control circuit of air conditioning system and air conditioning system - Google Patents
Control method and control circuit of air conditioning system and air conditioning system Download PDFInfo
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- CN113551386A CN113551386A CN202111015329.1A CN202111015329A CN113551386A CN 113551386 A CN113551386 A CN 113551386A CN 202111015329 A CN202111015329 A CN 202111015329A CN 113551386 A CN113551386 A CN 113551386A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000004891 communication Methods 0.000 claims abstract description 79
- 230000015654 memory Effects 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 29
- 238000004590 computer program Methods 0.000 claims description 24
- 230000004044 response Effects 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
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- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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Classifications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
Abstract
The embodiment of the application provides a control method and a control circuit of an air conditioning system and the air conditioning system, and is applied to the technical field of household appliances. When the indoor unit is detected to be disconnected from a power supply, the power supply is supplied to the indoor unit through the output voltage of the carrier communication bus; controlling an electronic expansion valve of the indoor unit to be closed; when the electronic expansion valve is detected to be failed to close, first indication information is sent to the outdoor unit, and the first indication information is used for indicating the outdoor unit to increase the output voltage of the carrier communication bus. In the scheme, when the electronic expansion valve fails to be closed, the output voltage of the carrier communication bus can be increased by the outdoor unit, so that the electronic expansion valve is normally closed when the indoor unit is powered off, and the safety of the air conditioning system is improved.
Description
Technical Field
The application relates to the technical field of household appliances, in particular to a control method and a control circuit of an air conditioning system and the air conditioning system.
Background
In an air conditioning system, when an indoor unit of the air conditioning system is powered off, an electronic expansion valve of the indoor unit is in an uncontrollable state, so that the indoor unit has the problems of condensation, water leakage and the like, the service life and the safety of the air conditioning system are seriously affected, and therefore, the electronic expansion valve needs to be closed in time when the indoor unit is powered off.
In the related art, an outdoor unit and an indoor unit of an air conditioning system are connected through a carrier communication bus, and when the indoor unit is powered off, the outdoor unit can supply power to the indoor unit through the carrier communication bus, so that the electronic expansion valve is closed. However, in this process, the output voltage of the carrier communication bus may be insufficient, and the electronic expansion valve may not be closed.
Disclosure of Invention
In view of the above, it is desirable to provide a control method and a control circuit for an air conditioning system, and an air conditioning system, so as to solve the technical problem in the prior art that an electronic expansion valve cannot be normally closed due to insufficient output voltage of a carrier communication bus.
In order to achieve the purpose, the technical scheme of the application is as follows:
in a first aspect, an embodiment of the present application provides a control method for an air conditioning system, where the air conditioning system includes an indoor unit and an outdoor unit, a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve;
the control method is applied to the indoor unit and comprises the following steps:
when the indoor unit is detected to be disconnected from a power supply, the power supply is supplied to the indoor unit through the output voltage of the carrier communication bus;
controlling an electronic expansion valve of the indoor unit to be closed;
when the electronic expansion valve is detected to be failed to close, first indication information is sent to the outdoor unit, and the first indication information is used for indicating the outdoor unit to increase the output voltage of the carrier communication bus.
In some embodiments, controlling the electronic expansion valve of the indoor unit to close comprises:
sending second indication information to the outdoor unit, wherein the second indication information is used for indicating the indoor unit to be disconnected from the power supply;
and controlling the electronic expansion valve to be closed according to a first response message sent by the outdoor unit, wherein the response message is used for indicating the electronic expansion valve to be closed.
In some embodiments, before controlling the electronic expansion valve of the indoor unit to close, the method further includes:
and controlling the load to be powered off, wherein the load comprises the load of the indoor unit and/or the load of the display panel.
In some embodiments, when the load is a load of a display panel, controlling the load to be powered off includes:
sending third indication information to the display panel, wherein the third indication information is used for indicating the display panel to control the load of the display panel to be powered off;
and receiving a second response message sent by the display panel, wherein the second response message is used for indicating that the load of the display panel is powered off.
In some embodiments, after controlling the electronic expansion valve of the indoor unit to close, the control method further includes:
when the connection between the indoor unit and the power supply is detected, the voltage output by the power supply supplies power to the indoor unit.
In some embodiments, the control method further comprises: and controlling the load to be powered on.
In a second aspect, an embodiment of the present application provides a control method for an air conditioning system, where the air conditioning system includes an indoor unit and an outdoor unit, a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve;
the control method is applied to the outdoor unit and comprises the following steps:
receiving first indication information sent by the indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, supplies power to the indoor unit through output voltage of a carrier communication bus, and controls an electronic expansion valve to fail to close;
and according to the first indication information, increasing the output voltage of the carrier communication bus.
In some embodiments, the control method further comprises: receiving second indication information sent by the indoor unit, wherein the second indication information is used for indicating the indoor unit to be disconnected from the power supply;
and sending a first response message to the indoor unit, wherein the first response message is used for indicating the indoor unit to control the electronic expansion valve to close.
In a third aspect, an embodiment of the present application provides a control circuit for an air conditioning system, where the air conditioning system includes an indoor unit and an outdoor unit, a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve;
this control circuit is applied to the off-premises station, and this control circuit includes: the outdoor unit main control unit and the power supply unit are connected, one end of the power supply unit is connected with the outdoor unit main control unit, and the other end of the power supply unit is connected with the indoor unit through a carrier communication bus;
and the outdoor unit main control unit is used for increasing the output voltage of the power supply unit when receiving first indication information sent by the indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from the power supply, the output voltage of the carrier communication bus is used for supplying power to the indoor unit, and the first indication information is sent when the electronic expansion valve of the indoor unit fails to be closed.
In some embodiments, the control circuit further comprises: the outdoor unit comprises a control unit and a voltage regulating unit, wherein the voltage regulating unit is connected with an outdoor unit main control unit through the control unit;
the outdoor unit main control unit is specifically configured to: and sending a control signal to the control unit so as to instruct the control unit to control the voltage regulating unit to increase the output voltage of the power supply unit through the control signal.
In a fourth aspect, an embodiment of the present application provides a control device for an air conditioning system, where the air conditioning system includes an indoor unit and an outdoor unit, a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve;
this controlling means is applied to indoor set, and this controlling means includes:
the first control module is used for supplying power to the indoor unit through the output voltage of the carrier communication bus when the indoor unit is detected to be disconnected from the power supply;
the second control module is used for controlling the electronic expansion valve of the indoor unit to be closed;
and the sending module is used for sending first indication information to the outdoor unit when the electronic expansion valve is detected to be failed to close, wherein the first indication information is used for indicating the outdoor unit to improve the output voltage of the carrier communication bus.
In some embodiments, the second control module is specifically configured to send second indication information to the outdoor unit, where the second indication information is used to indicate that the indoor unit is disconnected from the power supply;
and controlling the electronic expansion valve to be closed according to a first response message sent by the outdoor unit, wherein the response message is used for indicating the electronic expansion valve to be closed.
In some embodiments, the first control module is further configured to control the load to be powered off, where the load includes a load of the indoor unit and/or a load of the display panel.
In some embodiments, when the load is a load of the display panel, the first control module is specifically configured to send third indication information to the display panel, where the third indication information is used to indicate the display panel to control the load of the display panel to be powered off;
and receiving a second response message sent by the display panel, wherein the second response message is used for indicating that the load of the display panel is powered off.
In some embodiments, the first control module is further configured to supply power to the indoor unit through a voltage output by the power supply when it is detected that the indoor unit is connected to the power supply.
In some embodiments, the first control module is further configured to control the load to power up.
In a fifth aspect, an embodiment of the present application provides a control device for an air conditioning system, where the air conditioning system includes an indoor unit and an outdoor unit, a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve;
this controlling means is applied to the off-premises station, and this controlling means includes:
the receiving module is used for receiving first indication information sent by the indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, supplies power to the indoor unit through the output voltage of the carrier communication bus, and controls the electronic expansion valve to be closed in failure;
and the processing module is used for improving the output voltage of the carrier communication bus according to the first indication information.
In some embodiments, the receiving module is further configured to receive second indication information sent by the indoor unit, where the second indication information is used to indicate that the indoor unit is disconnected from the power supply;
and sending a first response message to the indoor unit, wherein the first response message is used for indicating the indoor unit to control the electronic expansion valve to close.
In a sixth aspect, an embodiment of the present application provides an indoor unit, including a memory and a processor, where the memory stores a computer program; the processor, when executing the computer program, implements the method of controlling an air conditioning system as described in the first aspect.
In a seventh aspect, an embodiment of the present application provides an outdoor unit, including a memory and a processor, where the memory stores a computer program; the processor, when executing the computer program, implements the control method of the air conditioning system according to the second aspect.
In an eighth aspect, an embodiment of the present application provides an air conditioning system, where the air conditioning system includes an indoor unit as described in the sixth aspect, and an outdoor unit as described in the seventh aspect, where a carrier communication bus is provided between the indoor unit and the outdoor unit, and the indoor unit includes an electronic expansion valve.
In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored; the computer program, when executed, implements a control method for an air conditioning system as described in the first and/or second aspect.
In a tenth aspect, an embodiment of the present application provides a computer program product, including: a computer program that, when executed by a processor, implements a control method of an air conditioning system as described in the first aspect and/or the second aspect.
The embodiment of the application provides a control method and a control circuit of an air conditioning system and the air conditioning system, when the condition that an indoor unit is disconnected from a power supply is detected, the power supply is supplied to the indoor unit through the output voltage of a carrier communication bus; controlling an electronic expansion valve of the indoor unit to be closed; when the electronic expansion valve is detected to be failed to close, first indication information is sent to the outdoor unit, and the first indication information is used for indicating the outdoor unit to increase the output voltage of the carrier communication bus. In the scheme, when the electronic expansion valve fails to be closed, the output voltage of the carrier communication bus can be increased by the outdoor unit, so that the electronic expansion valve is ensured to be closed timely when the indoor unit is powered off, and the safety of the air conditioning system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of an air conditioning system according to an embodiment of the present disclosure;
fig. 2 is a first schematic structural diagram of a control circuit of an air conditioning system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a control circuit of an air conditioning system according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a control method of an air conditioning system according to an embodiment of the present application;
fig. 5 is a second flowchart illustrating a control method of an air conditioning system according to an embodiment of the present application;
fig. 6 is a first schematic structural diagram of a control device of an air conditioning system according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a control device of an air conditioning system according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an indoor unit of an air conditioning system according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an outdoor unit of an air conditioning system according to an embodiment of the present application.
Description of reference numerals:
101. 201-indoor unit;
102. 202-an outdoor unit;
103. 203-carrier communication bus;
2011-indoor unit master control unit;
2012-power conversion unit;
2021-outdoor unit main control unit;
2022-a power supply unit;
2023-a control unit;
2024-voltage regulation unit.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated.
In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present application. As shown in fig. 1, the air conditioning system 100 provided in the present embodiment includes: indoor unit 101 and outdoor unit 102.
A carrier communication bus 103 is provided between the indoor unit 101 and the outdoor unit 102, and the indoor unit 101 is provided with an electronic expansion valve (not shown).
In practical applications, the carrier communication bus 103 is a carrier communication mode, which not only can implement communication, but also can be connected with other power supplies, so that electric energy and communication signals can be superposed together to be transmitted on the bus.
In some embodiments, the indoor units 101 and the outdoor units 102 are powered by different power sources, as shown in fig. 1, a power source 1 is connected to the indoor unit 101 for supplying power to the indoor unit 101, and a power source 2 is connected to the outdoor unit 102 for supplying power to the outdoor unit 102.
In some embodiments, the carrier communication bus 103 may be connected to the power supply 2 of the outdoor unit 102, and when the indoor unit 101 is powered off (i.e., the indoor unit is disconnected from the power supply 1), the power supply 2 may output voltage to the indoor unit 101 through the carrier communication bus 103 to supply power to the indoor unit 101, and at this time, the main control unit of the indoor unit may complete other operations after the indoor unit is powered off through the power supply, for example, closing an electronic expansion valve.
However, since the voltage output by the carrier communication bus 103 is a constant voltage value, a certain voltage is consumed in the process of transmitting the electric power to the indoor unit 101, which causes a voltage drop, so that the output voltage of the carrier communication bus 103 is insufficient, and the electronic expansion valve cannot be closed.
In view of this, embodiments of the present application provide a control method and a control circuit for an air conditioning system, and an air conditioning system. When the indoor unit 101 is powered off and the output voltage of the carrier communication bus is insufficient to close the electronic expansion valve, the outdoor unit 102 increases the output voltage of the carrier communication bus 103 to close the electronic expansion valve. Through the scheme, when the indoor unit 101 is powered off, the electronic expansion valve can be normally closed, and the safety of the air conditioning system is further improved.
It should be noted that the type of the air conditioning system in the embodiments of the present application is not particularly limited, and examples thereof include a central air conditioner, a vertical air conditioner, and a wall-mounted air conditioner. In some embodiments, the air conditioning system may also include a plurality of air conditioners, such as an outdoor unit of an air conditioner, an indoor unit of an air conditioner, and the like. In an embodiment, the air conditioning system may also include a plurality of indoor units or a plurality of outdoor units, which are not listed.
Next, how to solve the above technical problem by the solution provided by the embodiment of the present application is described in detail by specific embodiments.
Fig. 2 is a schematic structural diagram of a control circuit of an air conditioning system according to an embodiment of the present application. As shown in fig. 2, the air conditioning system includes an indoor unit 201 and an outdoor unit 202, and the indoor unit 201 and the outdoor unit 202 are connected by a carrier communication bus 203.
On the one hand, the control circuit of the indoor unit 201 includes: an indoor unit main control unit 2011, a power conversion unit 2012 and an electronic expansion valve (not shown), and an indoor unit main control unit 1011 is connected to the carrier communication bus 203 through the power conversion unit 2012.
The indoor unit 201 is further connected to a power supply 1, and the voltage output by the power supply 1 is used for supplying power to the indoor unit 201.
On the other hand, the control circuit of the outdoor unit 202 includes: and a power supply unit 204 and an outdoor unit main control unit 2021, where the outdoor unit main control unit 2021 is connected to the carrier communication bus through the power supply unit 204.
Wherein, one end of the power supply unit 204 is connected to the power supply 2, the power supply 2 can supply power to the outdoor unit main control unit 2021 through the power supply unit 204,
in this embodiment of the application, after the indoor unit 201 is powered on (at this time, the indoor unit 201 is normally connected to the power supply 1), the indoor unit main control unit 2011 detects the connection between the indoor unit 201 and the power supply 1 in real time, and sends an enable signal to the power conversion unit 2012 if the indoor unit 201 is disconnected from the power supply 1 (that is, the indoor unit 201 is powered off).
Further, after receiving the enable signal, the power conversion unit 2012 switches on the connection between the indoor unit main control unit 2011 and the carrier communication bus 203, so that the power supply 2 supplies power to the indoor unit main control unit 2011 through the carrier communication bus 203.
It should be noted that, for a specific type and a circuit structure of the power conversion unit 2012, the embodiment of the present application is not limited, and for example, the power conversion unit 2012 may include a DC-DC circuit.
Further, after the power is supplied to the indoor unit main control unit 2011, the indoor unit main control unit 2011 controls the electronic expansion valve to be closed, and detects the closing condition of the electronic expansion valve in real time.
When the indoor unit main control unit 2011 detects that the electronic expansion valve is not successfully closed, the indoor unit main control unit 2011 sends first indication information to the outdoor unit main control unit 2021, where the first indication information is used for instructing the outdoor unit main control unit 2021 to increase the output voltage of the carrier communication bus 203.
Correspondingly, the outdoor unit main control unit 2021 increases the output voltage according to the first indication information.
In a specific implementation, the outdoor unit main control unit 2021 may send a control signal to the power supply unit 204 to make the power supply unit 204 increase the output voltage, so as to increase the output voltage.
It should be noted that, for the specific type of the power supply unit 204, the embodiment of the present application is not limited, and for example, the power supply unit 204 may be a transformer, and the scheme specifically includes: the outdoor unit main control unit 2021 controls the transformer (power supply unit 204) to increase the output voltage.
In the control circuit of the air conditioning system provided in the embodiment of the present application, when the indoor unit is disconnected from the power supply 1, the power supply of the outdoor unit supplies power to the main control unit of the indoor unit through the carrier communication bus to close the electronic expansion valve, and if the electronic expansion valve is not successfully closed, the voltage value of the output voltage can be increased by the outdoor unit, so that when the indoor unit is powered down, the electronic expansion valve is ensured to be normally closed, and the safety of the air conditioning system is improved.
In some scenarios, it may not be possible to directly control the power supply unit 204 to boost the output voltage, which requires the output voltage of the carrier communication circuit 203 to be regulated by means of other elements.
Fig. 3 is a schematic structural diagram of a control circuit of an air conditioning system according to an embodiment of the present application. As shown in fig. 3, the control circuit 200 further includes, in addition to the control circuit shown in fig. 2: a voltage adjusting unit 2024 and a control unit 2023, wherein the outdoor unit main control unit 2021 is connected to the voltage adjusting unit 2024 through the control unit 2023.
In this embodiment, when the outdoor unit main control unit 2021 increases the output voltage, the specific steps are: a control signal for instructing to raise the output voltage is sent to the control unit 2023.
It should be noted that, for a specific type of the voltage regulation unit 2024, the embodiment of the present application is not limited, and for example, the voltage regulation unit 2024 may be a MOS transistor.
Next, the application and implementation principle of the control circuit in the present application will be specifically described with reference to specific embodiments.
Fig. 4 is a flowchart illustrating a control method of an air conditioning system according to an embodiment of the present application. As shown in fig. 4, when implementing the control method in the present embodiment, the indoor unit 201 and the outdoor unit 202 respectively execute the following steps:
and S401, when the indoor unit detects that the indoor unit is disconnected from the power supply, supplying power to the indoor unit through the output voltage of the power supply of the outdoor unit.
Specifically, if it is detected that the indoor unit 201 is disconnected from the power supply 1, an enable signal is sent to the DC-DC circuit, thereby turning on the power bus so that the power supply 2 supplies power to the indoor unit 201 through the carrier communication bus 203.
And S402, the indoor unit controls the electronic expansion valve of the indoor unit to be closed.
Specifically, after the power is supplied to the indoor unit 201 through the carrier communication bus 203, the indoor unit 201 is powered on, so as to control the electronic expansion valve to be closed, and detect the closing condition of the electronic expansion valve in real time.
And S403, when the indoor unit detects that the electronic expansion valve is not closed successfully, the indoor unit sends first indication information for indicating to increase the output voltage to the outdoor unit.
Specifically, when the indoor unit 201 detects that the electronic expansion valve fails to close, the first instruction information is sent to the outdoor unit 202.
And S404, the outdoor unit increases the output voltage of the carrier communication bus according to the first indication information.
It should be noted that, as to the way of increasing the output voltage of the carrier communication bus by the outdoor unit, the embodiment of the present application is not particularly limited, and on the one hand, the output voltage may be increased by controlling the transformer (the power supply unit 2022) by the outdoor unit 202.
Accordingly, after the outdoor unit 202 increases the output voltage, the indoor unit 201 continues to control the electronic expansion valve to close using the increased output voltage.
In the control method provided by the embodiment of the application, when the indoor unit is disconnected from the power supply, the carrier communication bus supplies power to the indoor unit to close the electronic expansion valve, and if the electronic expansion valve fails to be closed, the output voltage can be increased by the outdoor unit, so that the electronic expansion valve is ensured to be normally closed when the indoor unit is powered off, and the safety of the air conditioning system is improved.
In a possible implementation manner, before the indoor unit 201 controls the electronic expansion valve to close, the method further includes the following steps:
s4021, the indoor unit transmits second instruction information for instructing the indoor unit to disconnect from the power supply to the outdoor unit.
S4022, the indoor unit receives a first response message sent by the outdoor unit and used for indicating the closing of the electronic expansion valve, and controls the electronic expansion valve to be closed according to the first response message.
It should be understood that, for increasing the output voltage, the embodiment of the present application is not particularly limited. In one aspect, the lifting may be performed with a fixed lifting margin.
Optionally, after the output voltage is boosted by the fixed boosting range, if the indoor unit 201 still cannot close the electronic expansion valve, the outdoor unit 202 may be notified according to the above steps, so as to further boost the output voltage.
Through this embodiment, can adjust output voltage many times to realize closing of electronic expansion valve, promote the reliability.
On the other hand, when the indoor unit 201 sends the first indication information to the outdoor unit, the indication information carries voltage information, and the outdoor unit 202 may control the power supply unit 2022 to increase the output voltage according to the voltage information, where the voltage information may include: the current output voltage of the carrier communication bus 203, the voltage required to close the electronic expansion valve, etc., which are not listed here
Through this embodiment, the outdoor unit 202 can accurately know the boost amplitude of the output voltage, so as to close the electronic expansion valve as soon as possible, thereby further improving the safety of the air conditioning system.
In some embodiments, after the power failure of the indoor unit 201, when the power supply 2 supplies power to the indoor unit 201, the load of the indoor unit 201 also consumes a certain voltage, which causes a voltage drop, such that the output voltage is insufficient, and the electronic expansion valve cannot be closed.
In view of this, in the control method provided in the embodiment of the present application, after the indoor unit 201 is disconnected from the power supply 1, the indoor unit 201 may also turn off the relevant load, thereby reducing power consumption.
Fig. 5 is a flowchart illustrating a control method of an air conditioning system according to an embodiment of the present application. On the basis of the embodiment shown in fig. 4, the present solution will be described in more detail with reference to the embodiment shown in fig. 5, and when implementing the control method in the present embodiment, the indoor unit 201 and the outdoor unit 202 perform the following steps:
and S501, when the indoor unit detects that the indoor unit is disconnected from the power supply, supplying power to the indoor unit through the power supply of the outdoor unit.
It should be noted that step S501 is similar to step S401 in the embodiment of fig. 4, and the detailed description may refer to the above embodiment, which is not repeated herein.
And S502, controlling the load to be powered off by the indoor unit.
Wherein, the load comprises the load of the display panel and/or the load of the indoor unit.
In general, the load of the indoor unit may include: relay, water pump, anion module, LED lamp etc..
In practical applications, the indoor unit 201 further includes a display panel (not shown). The display panel can be used for receiving commands of the indoor unit and controlling the load of the display panel according to the commands, wherein the load of the display panel is, for example, a buzzer, a display screen, a swing motor and the like.
Specifically, when the load of the display panel is controlled to be turned off, the method comprises the following steps:
(1) the indoor unit 201 sends third indication information indicating that the display panel controls the load of the display panel to be powered off to the display panel;
(2) correspondingly, the display panel controls the load corresponding to the display panel to be powered off according to the third indication information, and sends a second response message to the indoor unit after the power off is completed.
(3) The indoor unit 201 receives a second response message sent by the display panel to indicate that the load of the display panel has been successfully powered off.
At this point, the power down of the load is completed.
And S503, closing the electronic expansion valve by the indoor unit.
And S504, when the indoor unit detects that the electronic expansion valve is not successfully closed, the indoor unit sends first indication information for indicating the outdoor unit to increase the output voltage.
And S505, the outdoor unit receives the first indication information and increases the output voltage according to the first indication information.
It should be noted that steps S503 to S505 are similar to steps S402 to S404 in the embodiment shown in fig. 4, and the detailed description may refer to the above embodiment, which is not repeated herein.
And S506, when the indoor unit detects that the indoor unit is connected with the power supply, the indoor unit is powered by the voltage output by the power supply corresponding to the indoor unit.
Specifically, the indoor unit 201 detects the connection between the indoor unit and the power supply 1 in real time, and when the indoor unit 201 is reconnected to the power supply 1 (i.e., the indoor unit 201 is powered up again), an enable signal is sent to the DC-DC circuit (the power conversion unit 2012), so as to turn on the power bus, and supply power to the indoor unit 201 through the voltage output by the power supply 1.
And S507, controlling the load to be powered on by the indoor unit.
Wherein the load includes a load of the room display panel and/or a load of the internal room.
Specifically, when the load of the display panel is controlled to be turned off, the method comprises the following steps:
(1) the indoor unit 201 transmits fourth instruction information for instructing to control the power-on of the load of the display panel to the display panel.
Optionally, after the indoor unit 201 is powered on again, indication information for indicating that the outdoor unit 202 stops increasing the output voltage may be sent to the outdoor unit 202.
Fig. 6 is a first schematic structural diagram of a control device of an air conditioning system according to an embodiment of the present application. The air conditioning system comprises an indoor unit and an outdoor unit, wherein the outdoor unit is connected with the indoor unit through a carrier communication bus, and the indoor unit comprises an electronic expansion valve. The control device is applied to the indoor unit of the air conditioning system shown in the above embodiment.
As shown in fig. 6, a control device 600 according to an embodiment of the present application includes:
the first control module 601 is used for supplying power to the indoor unit through the output voltage of the carrier communication bus when the indoor unit is detected to be disconnected from a power supply;
a second control module 602, configured to control an electronic expansion valve of the indoor unit to close;
the sending module 603 is configured to send first indication information to the outdoor unit when it is detected that the electronic expansion valve fails to close, where the first indication information is used to indicate the outdoor unit to increase an output voltage of the carrier communication bus.
It should be noted that the control device of the air conditioning system provided in this embodiment may be used to execute the processing method of the air conditioning system corresponding to the indoor unit, and the implementation manner and the technical effect are similar, and details are not described herein again.
Fig. 7 is a schematic structural diagram of a control device of an air conditioning system according to an embodiment of the present application. The control device provided in the embodiment of the present application is applied to the outdoor unit of the air conditioning system shown in the above embodiment.
The air conditioning system includes an outdoor unit and an indoor unit, a carrier communication bus is provided between the outdoor unit and the indoor unit, an electronic expansion valve is provided in the indoor unit, as shown in fig. 7, a control device 700 provided in the embodiment of the present application specifically includes:
the receiving module 701 is used for receiving first indication information sent by the indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, supplies power to the indoor unit through the output voltage of a carrier communication bus, and controls the electronic expansion valve to be closed in failure;
and the processing module 702 is configured to increase the output voltage of the carrier communication bus according to the first indication information.
It should be noted that the control device of the air conditioning system provided in this embodiment may be used to execute the processing method of the air conditioning system corresponding to the outdoor unit, and the implementation manner and the technical effect are similar, and details are not repeated herein.
Fig. 8 is a schematic structural diagram of an indoor unit of an air conditioning system according to an embodiment of the present application. This indoor set and the outdoor unit of the air conditioning system are connected through a bus, and an electronic expansion valve is provided in the indoor set, as shown in fig. 8, the indoor set 800 includes: a processor 801 and a memory 802.
Wherein, the memory 802 is used for storing computer programs; the processor 801 is configured to execute a computer program stored in the memory, and implement a control method corresponding to the indoor unit in each of the above method embodiments.
It should be noted that the indoor unit provided in this embodiment may be configured to execute the control method corresponding to the indoor unit, and the implementation manner and the technical effect are similar, which are not described herein again.
Fig. 9 is a schematic structural diagram of an outdoor unit of an air conditioning system according to an embodiment of the present application. The outdoor unit is connected to an indoor unit of an air conditioning system through a carrier communication bus, and an electronic expansion valve is provided in the indoor unit, as shown in fig. 9, the outdoor unit 900 includes: a processor 901, a memory 902.
The memory 902 stores a computer program; the processor 901 executes the computer program stored in the memory to implement the control method of the air conditioning system corresponding to the outdoor unit in the above embodiments of the methods.
In the outdoor unit 900 or the indoor unit 800, the memory and the processor are electrically connected directly or indirectly to realize data transmission or interaction. For example, the elements may be electrically connected to each other via one or more communication buses or signal lines, such as bus 803 or 903. The memory stores computer-executable instructions for implementing the data access control method, and includes at least one software functional module which can be stored in the memory in the form of software or firmware, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory.
The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory is used for storing programs, and the processor executes the programs after receiving the execution instructions. Further, the software programs and modules within the aforementioned memories may also include an operating system, which may include various software components and/or drivers for managing system tasks (e.g., memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.
The Processor 901 may be an integrated circuit chip having signal Processing capability, and the Processor 901 may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It should be noted that the outdoor unit provided in this embodiment may be used to execute the control method of the air conditioning system corresponding to the outdoor unit, and the implementation manner and the technical effect are similar, and details are not described here again.
The embodiment of the application also provides an air conditioning system, which comprises the outdoor unit and the indoor unit, wherein the outdoor unit and the indoor unit are connected through a carrier communication bus, and the indoor unit comprises an electronic expansion valve.
An embodiment of the present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the computer-executable instructions are used to implement a control method corresponding to an indoor unit and/or an outdoor unit in the foregoing method embodiments.
Embodiments of the present application further provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program is configured to implement a control method corresponding to an indoor unit and/or an outdoor unit in the foregoing method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, the computer program can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.
Claims (16)
1. The control method of the air conditioning system is characterized in that the air conditioning system comprises an indoor unit and an outdoor unit, a carrier communication bus is arranged between the indoor unit and the outdoor unit, and an electronic expansion valve is arranged in the indoor unit;
the control method is applied to the indoor unit and comprises the following steps:
when the indoor unit is detected to be disconnected from a power supply, the power is supplied to the indoor unit through the output voltage of the carrier communication bus;
controlling an electronic expansion valve of the indoor unit to be closed;
and when the electronic expansion valve is detected to be failed to close, sending first indication information to the outdoor unit, wherein the first indication information is used for indicating the outdoor unit to increase the output voltage of the carrier communication bus.
2. The control method according to claim 1, wherein the controlling of the closing of the electronic expansion valve of the indoor unit includes:
sending second indication information to the outdoor unit, wherein the second indication information is used for indicating that the indoor unit is disconnected from a power supply;
and controlling the electronic expansion valve to be closed according to a first response message sent by the outdoor unit, wherein the response message is used for indicating the electronic expansion valve to be closed.
3. The control method according to claim 1, wherein before controlling the electronic expansion valve of the indoor unit to close, the method further comprises:
and controlling the power failure of loads, wherein the loads comprise the load of the indoor unit and/or the load of a display panel.
4. The control method of claim 3, wherein when the load is a load of a display panel, the controlling the load to be powered off comprises:
sending third indication information to the display panel, wherein the third indication information is used for indicating the display panel to control the load of the display panel to be powered off;
and receiving a second response message sent by the display panel, wherein the second response message is used for indicating that the load of the display panel is powered off.
5. The control method according to claim 3, wherein after controlling the electronic expansion valve of the indoor unit to be closed, the control method further comprises:
and when the connection between the indoor unit and a power supply is detected, the power supply is supplied to the indoor unit through the voltage output by the power supply.
6. The control method according to claim 5, characterized by further comprising:
and controlling the load to be powered on.
7. The control method of the air conditioning system is characterized in that the air conditioning system comprises an indoor unit and an outdoor unit, a carrier communication bus is arranged between the indoor unit and the outdoor unit, and an electronic expansion valve is arranged in the indoor unit;
the control method is applied to the outdoor unit, and comprises the following steps:
receiving first indication information sent by an indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, supplies power to the indoor unit through the output voltage of the carrier communication bus, and controls the electronic expansion valve to fail to close;
and according to the first indication information, improving the output voltage of the carrier communication bus.
8. The control method according to claim 7, characterized by further comprising:
receiving second indication information sent by the indoor unit, wherein the second indication information is used for indicating the indoor unit to be disconnected from a power supply;
and sending a first response message to the indoor unit, wherein the first response message is used for indicating the indoor unit to control the electronic expansion valve to be closed.
9. The control circuit of the air conditioning system is characterized in that the air conditioning system comprises an indoor unit and an outdoor unit, a carrier communication bus is arranged between the indoor unit and the outdoor unit, and the indoor unit comprises an electronic expansion valve;
the control circuit is applied to the outdoor unit, and comprises: the outdoor unit main control unit and the power supply unit are connected, one end of the power supply unit is connected with the outdoor unit main control unit, and the other end of the power supply unit is connected with the indoor unit through the carrier communication bus;
and the outdoor unit main control unit is used for increasing the output voltage of the power supply unit when receiving first indication information sent by the indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, the power is supplied to the indoor unit through the output voltage of the carrier communication bus, and the first indication information is sent when the electronic expansion valve of the indoor unit fails to be closed.
10. The control circuit of claim 9, further comprising: the outdoor unit comprises a control unit and a voltage regulating unit, wherein the voltage regulating unit is connected with the outdoor unit main control unit through the control unit;
the outdoor unit main control unit is specifically configured to: and sending a control signal to the control unit so as to instruct the control unit to control the voltage regulating unit to increase the output voltage of the power supply unit through the control signal.
11. The control device of the air conditioning system is characterized in that the air conditioning system comprises an indoor unit and an outdoor unit, a carrier communication bus is arranged between the indoor unit and the outdoor unit, and an electronic expansion valve is arranged in the indoor unit;
the control device is applied to the indoor unit, and comprises:
the first control module is used for supplying power to the indoor unit through the output voltage of the carrier communication bus when the indoor unit is detected to be disconnected from a power supply;
the second control module is used for controlling the electronic expansion valve of the indoor unit to be closed;
and the sending module is used for sending first indication information to the outdoor unit when the electronic expansion valve is detected to be failed to close, wherein the first indication information is used for indicating the outdoor unit to improve the output voltage of the carrier communication bus.
12. The control device of the air conditioning system is characterized in that the air conditioning system comprises an indoor unit and an outdoor unit, a carrier communication bus is arranged between the indoor unit and the outdoor unit, and an electronic expansion valve is arranged in the indoor unit;
the control device is applied to the outdoor unit, and comprises:
the receiving module is used for receiving first indication information sent by an indoor unit, wherein the first indication information is sent when the indoor unit is disconnected from a power supply, the power is supplied to the indoor unit through the output voltage of the carrier communication bus, and the electronic expansion valve is controlled to be failed to be closed;
and the processing module is used for improving the output voltage of the carrier communication bus according to the first indication information.
13. An indoor unit comprising a memory and a processor, the memory storing a computer program;
the processor, when executing the computer program, implements the control method of the air conditioning system according to any one of claims 1 to 6.
14. An outdoor unit comprising a memory and a processor, the memory having stored thereon a computer program;
the processor, when executing the computer program, implements the control method of the air conditioning system according to any one of claims 7 to 8.
15. An air conditioning system comprising the indoor unit of claim 13 and the outdoor unit of claim 14, wherein a carrier communication bus is provided between the indoor unit and the outdoor unit.
16. A computer-readable storage medium having a computer program stored thereon; the computer program, when executed, implements a control method of an air conditioning system as claimed in any one of claims 1-8.
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Application publication date: 20211026 |