CN115218375A - Communication control method and device for indoor unit and outdoor unit of air conditioner, air conditioner and computer storage medium - Google Patents
Communication control method and device for indoor unit and outdoor unit of air conditioner, air conditioner and computer storage medium Download PDFInfo
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- CN115218375A CN115218375A CN202210877026.9A CN202210877026A CN115218375A CN 115218375 A CN115218375 A CN 115218375A CN 202210877026 A CN202210877026 A CN 202210877026A CN 115218375 A CN115218375 A CN 115218375A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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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
- F24F11/58—Remote control using Internet communication
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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Abstract
The embodiment of the application provides an air conditioner indoor and outdoor machine communication control method, a control device, an air conditioner and a computer storage medium, and relates to the technical field of air conditioners, wherein the air conditioner comprises at least two PFC control circuits which are connected in parallel; the control method comprises the following steps: and in response to a judgment result that the outdoor temperature is lower than the preset temperature threshold, at least one path of PFC control circuit is turned off so as to improve the working temperature of the electrolytic capacitor in the communication loop. According to the embodiment of the application, the outdoor temperature is obtained and compared with the preset temperature threshold, when the working temperature of the electrolytic capacitor of the communication loop is judged to be too low, at least one path of PFC control circuit of the air conditioner is turned off to improve the working temperature of the electrolytic capacitor of the communication loop, and the fault of communication between the internal machine and the external machine caused by too low working temperature of the electrolytic capacitor is avoided.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner indoor and outdoor unit communication control method, an air conditioner indoor and outdoor unit communication control device, an air conditioner and a computer storage medium.
Background
At present, communication between indoor and outdoor units of a household variable frequency air conditioner mostly adopts a zero-live wire communication mode, and the current of a communication loop is greatly influenced by power supply voltage and total loop resistance in a circuit. The temperature reduction can lead to the equivalent resistance ESR surge of the electrolytic capacitor who is used for the energy storage to lead to resistance unusual increase in the loop, and then make the electric current of communication loop reduce, lead to the opto-coupler can't switch on, make the communication of interior external machine break down, and finally lead to the air conditioner to shut down, influence user's normal use.
Disclosure of Invention
The embodiment of the application provides an air conditioner indoor and outdoor machine communication control method, a control device, an air conditioner and a computer storage medium, which can effectively solve the problem of low-temperature communication faults of indoor and outdoor machines of the air conditioner in a low-temperature environment.
On one hand, the embodiment provides an air conditioner indoor and outdoor machine communication control method, the air conditioner comprises at least two PFC control circuits, the PFC control circuits are connected in parallel; the control method comprises the following steps: and in response to a judgment result that the outdoor temperature is lower than the preset temperature threshold, at least one path of PFC control circuit is turned off so as to improve the working temperature of the electrolytic capacitor in the communication loop.
In some embodiments, before turning off at least one PFC control circuit in response to a determination result that an outdoor temperature is lower than a preset temperature threshold, the control method further includes: and determining that the communication fault exists between the internal machine and the external machine of the air conditioner.
In some embodiments, after it is determined that there is a fault in the communication between the internal and external machines of the air conditioner, and before the at least one PFC control circuit is turned off in response to a determination result that the outdoor temperature is lower than the preset temperature threshold, the control method further includes: the communication between the internal machine and the external machine of the air conditioner is cut off.
In some embodiments, after turning off at least one PFC control circuit in response to a determination result that the outdoor temperature is lower than the preset temperature threshold, the control method further includes: and starting the communication between the indoor unit and the outdoor unit of the air conditioner again at the interval of the first preset time.
In some embodiments, after the air conditioner starts to communicate with the indoor unit and the outdoor unit again at a first preset time interval, the control method further includes: responding to the judgment result that the communication fault is not eliminated, cutting off the communication between the internal machine and the external machine of the air conditioner again, and cutting off at least one path of other PFC control circuits; and opening the air conditioner for communication between the indoor unit and the outdoor unit again at the interval of second preset time.
In some embodiments, after turning on the communication between the indoor unit and the outdoor unit of the air conditioner again at intervals of a second preset time, the control method further includes: and responding to a judgment result that the communication fault is not eliminated yet, and sending out early warning.
In some embodiments, determining that a communication fault exists between the air conditioner internal machine and the air conditioner external machine comprises: responding to a judgment result that the resistance of the communication loop is larger than a preset resistance threshold value for normal communication of the internal machine and the external machine, and determining that the internal machine and the external machine of the air conditioner have communication faults; or responding to a judgment result that the power supply voltage is lower than a preset voltage threshold value for normal communication of the indoor unit and the outdoor unit, and determining that the communication of the indoor unit and the outdoor unit of the air conditioner has a fault.
In some embodiments, the control method further comprises: acquiring the times of turning off the PFC control circuit in preset unit time; and when the times of turning off the PFC control circuit in preset unit time exceed a preset time threshold, generating a fault signal.
In another aspect, the present embodiment provides an air conditioner indoor unit and outdoor unit communication control apparatus, including: the judging module is used for comparing the outdoor temperature with a preset temperature threshold; and the control module is used for controlling the starting and stopping of the PFC control circuit.
The present embodiment further provides an air conditioner, including a temperature obtaining device, a memory and a processor, where the memory stores a computer program, and the computer program is executed by the processor to implement the method for controlling communication between the indoor unit and the outdoor unit of the air conditioner according to any one of the above embodiments.
The present embodiment also provides a computer storage medium having a computer program stored thereon, where the computer program is loaded by a processor to execute the steps in the method for controlling communication between an air conditioner and an indoor unit and an outdoor unit of an air conditioner in any one of the above embodiments.
Compared with the prior art, according to the embodiment of the application, the outdoor temperature is obtained and compared with the preset temperature threshold, when the working temperature of the electrolytic capacitor of the communication loop is judged to be too low, the working temperature of the electrolytic capacitor of the communication loop is improved by switching off at least one PFC control circuit of the air conditioner, and the communication fault of the internal and external communication machines caused by too low working temperature of the electrolytic capacitor is avoided. The method can intervene in advance to prevent the low-temperature communication fault from influencing the use of a user, reduce the frequency of the low-temperature communication fault, reduce the maintenance frequency and solve the problem of the low-temperature communication fault of the internal and external machines caused by the increase of Equivalent Series Resistance (ESR) of the electrolytic capacitor of the air conditioner in a low-temperature environment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a communication loop provided in some embodiments of the present application;
fig. 2 is a diagram of a two-way PFC control circuit according to some embodiments of the present application;
fig. 3 is a schematic flow chart illustrating a method for controlling communication between an air conditioner and an indoor unit according to some embodiments of the present disclosure;
fig. 4 is a flowchart illustrating a method for controlling communication between an air conditioner and an indoor unit and an outdoor unit according to some embodiments of the present disclosure.
Reference numerals are as follows:
101. an indoor unit communication sub-circuit; 102. an outdoor unit communication sub-path; 103. an electrolytic capacitor; 104. for the electronic circuit.
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, 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.
In the description of the present application, it is to be understood that, in the description of the present application, "a plurality" means two or more unless specifically defined otherwise.
"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.
The use of "adapted to" or "configured to" in this application means open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps. Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiment of the invention provides an air conditioner internal and external machine communication control method, an air conditioner internal and external machine communication control device, an air conditioner and a computer storage medium.
According to an embodiment of the method for controlling communication between an air conditioner and an indoor unit and an outdoor unit of an air conditioner provided by the embodiment of the present application, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be executed in a sequence different from that shown herein.
In some embodiments of the present application, the method for controlling communication between an indoor unit and an outdoor unit of an air conditioner provided in the embodiments of the present application is applied to the air conditioner. In some embodiments of the present application, the air conditioner may be an industrial air conditioner; in some embodiments of the present application, the air conditioner may be a household air conditioner; in some embodiments of the present application, the air conditioner may be a single air conditioner, such as a cabinet air conditioner or a wall-mounted air conditioner; in some embodiments of the present application, the air conditioner may be an air conditioner group composed of a plurality of air conditioners, a multi-connected air conditioner, for example, a central air conditioner composed of a plurality of air conditioners.
In some embodiments of the present application, an air conditioner includes an indoor unit, an outdoor unit, and a communication loop connecting the indoor unit and the outdoor unit for communication between the indoor unit and the outdoor unit; the outdoor unit comprises a fan and a compressor; the communication loop comprises an outer machine communication electronic circuit, an inner machine communication electronic circuit, an electrolytic capacitor and a power supply electronic circuit; the outer machine communication circuit is connected with the inner machine communication circuit through the power supply circuit to form a communication loop; the electrolytic capacitor is connected with the electronic circuit. The power supply circuit is used for supplying electric energy to the electrolytic capacitor, is connected with the live wire and the zero wire and charges the electrolytic capacitor when the communication loop is conducted; the electrolytic capacitor is used for providing energy storage for the communication loop and providing electric energy for the communication loop when the communication loop is conducted.
In some embodiments of the present application, an embodiment structure of a communication loop is described in detail, and for example, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a communication loop provided in an embodiment of the present application, where the communication loop includes an internal machine communication sub-circuit 101, an external machine communication sub-circuit 102, an electrolytic capacitor 103, and an electronic supply circuit 104.
As shown in fig. 1, the indoor unit communication sub-circuit 101 includes a second triode Q2, a second isolation optocoupler OPT2, a fourth isolation optocoupler OPT4, and a third resistor R3; the base electrode of a second triode Q2 is connected with a TXD1 signal end, the collector electrode of the second triode Q2 is connected with a 1 st pin of a second isolating optocoupler OPT2, the emitter electrode of the second triode Q2 is grounded, a 2 nd pin of the second isolating optocoupler OPT2 is connected with an external machine communication electronic circuit through a first resistor R1, a 3 rd pin of the second isolating optocoupler OPT2 is connected with a 2 nd pin of a fourth isolating optocoupler OPT4, a 4 th pin of the second isolating optocoupler OPT2 and a 4 th pin of the fourth isolating optocoupler OPT4 are connected with power, a 3 rd pin of the fourth isolating optocoupler OPT4 is connected with an electrolytic capacitor 103, a 1 st pin of the fourth isolating optocoupler OPT4 is connected with a D1 signal end, one end of an RXD resistor R3 is connected with the RXD1 signal end in parallel and then connected with the 1 st pin of the fourth isolating optocoupler OPT4, and the other end of the third resistor R3 is grounded; in some embodiments of the application, the communication loop is controlled to be disconnected, and the second triode Q2 can be cut off, so that the second isolation optocoupler OPT2 is disconnected to realize the disconnection of the communication loop; in some embodiments of the present application, the communication loop is controlled to be conducted, and the communication loop can be conducted through the second triode Q2, so that the second isolation optocoupler OPT2 is conducted to realize the conduction of the communication loop.
As shown in fig. 1, the external unit communication sub-circuit 102 includes a first triode Q1, a first isolation optocoupler OPT1, a third isolation optocoupler OPT3, and a second resistor R2; TXD2 signal terminal is connected to first triode Q1's base, the 1 st foot of first isolation opto-coupler OPT1 is connected to first triode Q1's collecting electrode, first triode Q1's emitter ground connection, the 3 rd foot of fourth isolation opto-coupler is connected to the 2 nd foot of first isolation opto-coupler OPT1, the 3 rd foot of first isolation opto-coupler OPT1 passes through first resistance R1 and the 2 nd foot of second isolation opto-coupler OPT2, the 4 th foot of first isolation opto-coupler OPT1 and the 4 th foot of third isolation opto-coupler OPT3 connect the electricity, electrolytic capacitor 103 is connected to the 2 nd foot of third isolation opto-coupler OPT3, RXD2 signal terminal is connected to the 1 st foot of third isolation opto-coupler OPT3, the 1 st foot of third isolation opto-coupler OPT3 is connected after second resistance R2 one end and RXD2 signal terminal are parallelly connected, the other end ground connection of second resistance R2.
As shown in fig. 1, the positive electrode of the electrolytic capacitor 103 is connected to the 3 rd pin of the fourth isolating optocoupler OPT4, the negative electrode of the electrolytic capacitor 103 is connected to the 2 nd pin of the third isolating optocoupler OPT3, when the communication loop is conducted for communication, the electrolytic capacitor 103 supplies power to the communication loop, when the current of the communication loop is lower than the normal current of the communication loop, that is, the charging speed of the electrolytic capacitor 103 is lower than the power consumption speed of the communication loop, the second triode Q2 or the first triode Q1 is turned off to disconnect the communication loop, thereby preventing the air conditioner from being stopped due to communication failure, after the communication loop is disconnected, the electrolytic capacitor 103 only needs to charge and store energy, so as to prepare for communication loop recovery communication.
As shown in fig. 1, the power supply circuit 104 includes a diode D1, a zener diode D2, and a fourth resistor R4, the anode of the zener diode D2 is connected to the cathode of the electrolytic capacitor 103 and the ac power supply, the cathode of the zener diode D2 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is connected to the current power supply, and the power supply circuit 104 supplies power to the electrolytic capacitor 103 to ensure the normal operation of the communication loop.
The method for controlling communication between an internal machine and an external machine of an air conditioner provided in the embodiment of the present application is described by taking the air conditioner as an execution main body, and for simplifying description, the execution main body is omitted in the embodiment of the present application, and it can be understood that the execution main body in the following technical solution is the air conditioner.
On one hand, the embodiment of the application provides an air conditioner indoor and outdoor machine communication control method, the air conditioner applied by the method comprises at least two PFC control circuits, and the PFC control circuits in different paths are mutually connected in parallel. In a specific example, the PFC control circuit may employ a two-way parallel PFC control circuit as shown in fig. 2. Specifically, as shown in fig. 3, the method for controlling communication between the indoor unit and the outdoor unit of the air conditioner specifically includes the following steps: s101, when a signal that outdoor temperature is lower than a preset temperature threshold value is acquired; s102, closing at least one PFC control circuit to improve the working temperature of an electrolytic capacitor 103 in the communication loop. Specifically, when two parallel PFC control circuits are adopted, the ripples of the two PFC control circuits are balanced, so that the generated heat is reduced, when one PFC control circuit is closed or the two PFC control circuits are closed simultaneously, the heat generated by the circuit is increased, the increased heat is used for influencing a communication loop, in a specific structure, the PFC control circuit and the communication loop can be arranged in an electric control box or are arranged adjacently, so that the generated heat influences the communication loop when at least one PFC circuit is turned off. The influence on the communication loop is mainly generated on the electrolytic capacitor 103 in the communication loop, so as to increase the working temperature of the electrolytic capacitor 103 in the communication loop.
In some embodiments, before turning off at least one PFC control circuit in response to a determination result that an outdoor temperature is lower than a preset temperature threshold, the control method further includes the following steps of: firstly, setting a preset temperature threshold, then obtaining outdoor temperature information, comparing the outdoor temperature with the preset temperature threshold, and judging whether the outdoor temperature is lower than the preset temperature threshold or not by calculating the temperature difference between the outdoor temperature and the preset temperature threshold. In various embodiments, this step may be obtained by other auxiliary devices that need only send a signal that the outdoor temperature is below a predetermined temperature threshold.
In some examples, the temperature threshold is a low temperature threshold of the electrolytic capacitor 103 in the communication loop, and for example, when the outdoor temperature is lower than the low temperature threshold of the electrolytic capacitor 103 in the communication loop of the air conditioner, the equivalent resistance of the electrolytic capacitor 103 increases, so that the current in the communication loop decreases to open the communication loop, and the air conditioner is shut down due to communication failure. When at least one PFC control circuit is closed, the generated heat is increased to improve the working temperature of the electrolytic capacitor 103 in the communication loop, so that the fault caused by the increase of the equivalent resistance of the electrolytic capacitor 103 due to the over-low temperature of the electrolytic capacitor 103 is avoided or eliminated.
In other examples, the method provided in this embodiment of the present application may be used for early warning of communication monitoring between an internal machine and an external machine of an air conditioner and fault prevention, and when a temperature threshold is set, a low temperature threshold higher than the electrolytic capacitor 103 in the communication loop is set, that is, before a fault possibly caused by an excessively low external temperature affects the electrolytic capacitor 103 in the communication loop, the operating temperature of the electrolytic capacitor 103 is increased, so as to achieve the purpose of preventing the electrolytic capacitor 103 in the communication loop from having an excessively low temperature.
In the specific example of the above embodiment, the operating temperature of the electrolytic capacitor 103 in the communication loop can be effectively increased by turning off at least one PFC control circuit, and when the operating temperature of the electrolytic capacitor 103 in the communication loop needs to be increased, an additional heating device does not need to be added, and the operation of the original air conditioner circuit is not affected. By closing at least one of the two phases of the staggered PFC, the power device can generate more heat to improve the working temperature of the electrolytic capacitor 103, recover the normal loop current and protect the normal communication of the internal and external units, thereby reducing after-sale maintenance and improving the user experience.
In some embodiments, as shown in fig. 4, before acquiring the signal that the outdoor temperature is lower than the preset temperature threshold, the method further includes the following steps: s201, judging whether communication between the indoor unit and the outdoor unit of the air conditioner fails, and performing S202 to judge whether the outdoor temperature is lower than a preset temperature threshold value. And when the communication between the indoor unit and the outdoor unit of the air conditioner fails and the outdoor temperature is lower than the preset temperature threshold value, judging that the communication failure between the indoor unit and the outdoor unit of the air conditioner is caused by too low outdoor temperature.
In some embodiments, after it is determined that the communication failure between the indoor unit and the outdoor unit of the air conditioner is caused by the excessively low outdoor temperature, the method further includes the following steps: and S204, cutting off the communication between the indoor unit and the outdoor unit of the air conditioner, namely cutting off a communication loop. After the communication loop is cut off, the electrolytic capacitor 103 only needs to be charged to store energy so as to prepare for the communication loop to recover communication. And turning off one path of PFC control circuit to improve the working temperature of the electrolytic capacitor 103 in the communication loop.
In some embodiments, after the communication loop is cut off and at least one PFC control circuit is turned off, the method further includes the following steps: and S205, after a period of time (first preset time), starting the communication between the indoor unit and the outdoor unit of the air conditioner again, namely, conducting a communication loop to realize the normal communication between the indoor unit and the outdoor unit of the air conditioner. Because the steps of cutting off the communication loop and turning off at least one path of PFC control circuit are independent, the two steps can be carried out simultaneously, and the situations of succession can also exist. And under the condition of precedence, taking the time point of the last finished step as the timing starting point of the first preset time. The embodiment is mainly used for solving the problem that outdoor low temperature affects the electrolytic capacitor 103 of the communication loop, and after the fault information and the low temperature information are obtained, the fault is determined to be corresponding, and the fault is solved through the embodiment.
In some embodiments, after the communication between the indoor unit and the outdoor unit of the air conditioner is started again after the first preset time, the following steps are continued: and S206, judging whether the communication between the internal machine and the external machine of the air conditioner is normal again, if the fault still exists, continuing the step S207, cutting off the communication between the internal machine and the external machine of the air conditioner again, and cutting off other PFC control circuits, wherein after at least two PFC control circuits are cut off simultaneously, more heat can be generated in unit time, and in order to ensure the normal operation of the air conditioner, the communication cutting-off time of the internal machine and the external machine cannot be overlong, so that a mode of increasing heat in unit time is adopted, namely two PFC control circuits are cut off simultaneously, and the working temperature of the electrolytic capacitor 103 in the communication loop is increased. And after a period of time, adopting a second preset time, and turning on the air conditioner for communication between the internal machine and the external machine again. In a specific example, in some cases, the working temperature of the electrolytic capacitor 103 of the communication loop may not be recovered to a normal level, and therefore, the judgment and the corresponding processing are still needed.
In some of these embodiments, the following steps are also included: and S208, after the communication between the indoor unit and the outdoor unit of the air conditioner is opened again after the second preset time, S209, continuously judging whether the communication between the indoor unit and the outdoor unit of the air conditioner is normal, if the fault still exists, judging that the fault is not caused by the fact that the temperature of the electrolytic capacitor 103 is too low, and S210, sending out early warning to inform a user. In a specific example, although the outdoor temperature is lower than the preset temperature threshold, the specific fault is not caused by the outdoor temperature, and then the specific fault needs to be sent to the user to remind the user to repair the outdoor temperature in time.
In some embodiments, the method for controlling communication between the air conditioner indoor unit and the air conditioner outdoor unit further comprises: and acquiring the early warning times in the preset unit time, and if the early warning times in the preset unit time exceed a preset time threshold, generating a fault signal, providing a basis for maintenance and knowing the actual operation condition of the current air conditioner.
In some embodiments, the method for controlling communication between the air conditioner indoor unit and the air conditioner outdoor unit further comprises: acquiring the times of turning off the PFC control circuit in preset unit time; and when the times of turning off the PFC control circuit in preset unit time exceed a preset time threshold, generating a fault signal. In the process of preventing faults, the running state of a communication loop of the air conditioner is judged according to the times of the received prompt information in unit time, if the times of the received prompt information in unit time reach preset times, the running state of the communication loop of the air conditioner is abnormal, and the adaptability of the air conditioner in a low-temperature environment is poor, repair information is sent out to prompt a user to carry out maintenance.
In some embodiments, after the first preset time, after the communication between the indoor unit and the outdoor unit of the air conditioner is started again, the current, the voltage and/or the resistance in the communication loop are detected, and whether the communication between the indoor unit and the outdoor unit of the air conditioner is recovered to be normal is judged by taking the current, the voltage and/or the resistance as a judgment basis, and if the communication is recovered to be normal, the PFC control circuit which is turned off before is turned on.
In some embodiments, after the second preset time, the communication between the internal machine and the external machine of the air conditioner is opened again, the current, the voltage and/or the resistance in the communication loop are detected, whether the communication between the internal machine and the external machine of the air conditioner is recovered to be normal or not is judged, and if the communication between the internal machine and the external machine of the air conditioner is recovered to be normal, the PFC control circuit which is turned off before is turned on.
In some embodiments, determining whether the communication between the internal machine and the external machine of the air conditioner is still failed comprises: detecting whether the resistance of a communication loop is larger than a preset resistance threshold value for normal communication of the internal machine and the external machine or whether the power supply voltage is lower than a preset voltage threshold value for normal communication of the internal machine and the external machine; and if the resistance of the communication loop is larger than the preset resistance threshold value for normal communication of the internal and external machines, or the power supply voltage is lower than the preset voltage threshold value for normal communication of the internal and external machines, the communication loop is disconnected.
In another aspect, the present embodiment provides an air conditioner indoor unit and outdoor unit communication control apparatus, including: the device comprises a judgment module and a control module. The judging module is used for comparing the outdoor temperature with a preset temperature threshold value and sending a comparison result to the control module; and the control module selectively controls the starting and stopping of the PFC control circuit after receiving the information sent by the judging module.
In some embodiments, the determining module is further configured to determine whether communication between the internal machine and the external machine of the air conditioner fails, and/or the control module is further configured to control start and stop of the communication loop.
In some embodiments, after the control module controls to close the PFC control circuit and switches the communication loop, and after a first preset time or a second preset time and a certain condition is met, the control module controls to open the communication loop and open the PFC control circuit that was closed before. The specific adjustment required is described in detail in the communication control method between the indoor unit and the outdoor unit of the air conditioner in the above embodiments, and is not described herein again.
In some embodiments, the air conditioner indoor and outdoor unit communication control device further includes an early warning module, and after the second preset time, the control module controls the early warning module to send out an early warning when the air conditioner indoor and outdoor unit communication still has a fault after the air conditioner indoor and outdoor unit communication is opened.
In some embodiments, when it is required to determine whether the communication between the indoor unit and the outdoor unit of the air conditioner fails, the determining module obtains the resistance and/or the power supply voltage information of the communication loop, and determines whether the resistance of the communication loop is greater than a preset resistance threshold for normal communication between the indoor unit and the outdoor unit, or detects whether the power supply voltage is lower than a preset voltage threshold for normal communication between the indoor unit and the outdoor unit, and if the resistance of the communication loop is greater than the preset resistance threshold for normal communication between the indoor unit and the outdoor unit, or the power supply voltage is lower than the preset voltage threshold for normal communication between the indoor unit and the outdoor unit, determines that the communication between the indoor unit and the outdoor unit of the air conditioner fails.
In some embodiments, the control module is further configured to obtain a number of times that the PFC control circuit is turned off in a preset unit time, and generate the fault signal when the number of times that the PFC control circuit is turned off in the preset unit time exceeds a preset number threshold.
The present embodiment further provides an air conditioner, including a temperature obtaining device, a memory and a processor, where the memory stores a computer program, and the computer program, when executed by the processor, implements the method for controlling communication between an internal machine and an external machine of the air conditioner according to any one of the above embodiments.
The present embodiment also provides a computer storage medium, on which a computer program is stored, where the computer program is loaded by a processor to execute the steps in the method for controlling communication between an air conditioner and an indoor unit and an outdoor unit of an air conditioner according to any one of the foregoing embodiments.
The method for controlling communication between an air conditioner and an indoor unit and an outdoor unit, the control device, the air conditioner and the computer storage medium provided by the embodiment of the application are described in detail, a specific example is applied to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (11)
1. The communication control method for the indoor unit and the outdoor unit of the air conditioner is characterized in that the air conditioner comprises at least two PFC control circuits, wherein the PFC control circuits are connected in parallel; the control method comprises the following steps:
and in response to a judgment result that the outdoor temperature is lower than the preset temperature threshold, at least one path of PFC control circuit is turned off so as to improve the working temperature of the electrolytic capacitor in the communication loop.
2. The method as claimed in claim 1, wherein before the step of turning off at least one PFC control circuit in response to the determination that the outdoor temperature is lower than the preset temperature threshold, the method further comprises:
and determining that the communication fault exists between the internal machine and the external machine of the air conditioner.
3. The method as claimed in claim 2, wherein after determining that there is a failure in the communication between the air conditioner and the indoor and outdoor units, and before turning off the at least one PFC control circuit in response to the determination that the outdoor temperature is lower than the predetermined temperature threshold, the method further comprises:
and cutting off the communication between the internal machine and the external machine of the air conditioner.
4. The communication control method for the indoor unit and the outdoor unit of the air conditioner as claimed in claim 3, wherein after at least one PFC control circuit is turned off in response to the determination result that the outdoor temperature is lower than the preset temperature threshold, the control method further comprises: and starting the communication between the internal machine and the external machine of the air conditioner again at intervals of first preset time.
5. The method as claimed in claim 4, further comprising, after re-enabling the air conditioner indoor and outdoor unit communication at the interval of the first preset time, the step of:
responding to the judgment result that the communication fault is not eliminated, cutting off the communication between the internal machine and the external machine of the air conditioner again, and cutting off at least one other path of PFC control circuit;
and opening the air conditioner for communication between the indoor unit and the outdoor unit again at intervals of second preset time.
6. The method of claim 5, further comprising, after turning on the air conditioner indoor/outdoor unit communication again at the interval of the second preset time, the step of:
and responding to the judgment result that the communication fault is not eliminated yet, and sending out early warning.
7. The method for controlling communication between an indoor unit and an outdoor unit of an air conditioner according to claim 2, wherein the determining that the indoor unit and the outdoor unit of the air conditioner have the communication failure comprises:
responding to a judgment result that the resistance of a communication loop is larger than a preset resistance threshold value for normal communication of the internal and external machines, and determining that the internal and external machines of the air conditioner have communication faults; or
And determining that the communication between the internal machine and the external machine of the air conditioner has a fault in response to a judgment result that the power supply voltage is lower than a preset voltage threshold value for normal communication between the internal machine and the external machine.
8. The communication control method for indoor and outdoor units of an air conditioner according to claim 1, wherein the control method further comprises:
acquiring the times of turning off the PFC control circuit in preset unit time;
and when the times of turning off the PFC control circuit in preset unit time exceed a preset time threshold, generating a fault signal.
9. An air conditioner internal and external machine communication control device is characterized by comprising:
the judging module is used for comparing the outdoor temperature with a preset temperature threshold;
and the control module is used for controlling the starting and stopping of the PFC control circuit.
10. An air conditioner comprising a temperature acquisition device, a memory and a processor, wherein the memory stores a computer program which, when executed by the processor, implements the method for controlling communication between the indoor unit and the outdoor unit of the air conditioner as set forth in any one of claims 1 to 8.
11. A computer storage medium, having a computer program stored thereon, the computer program being loaded by a processor to perform the steps in the communication control method for the indoor and outdoor units of the air conditioner according to any one of claims 1 to 8.
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| CN202210877026.9A CN115218375A (en) | 2022-07-25 | 2022-07-25 | Communication control method and device for indoor unit and outdoor unit of air conditioner, air conditioner and computer storage medium |
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| CN202210877026.9A CN115218375A (en) | 2022-07-25 | 2022-07-25 | Communication control method and device for indoor unit and outdoor unit of air conditioner, air conditioner and computer storage medium |
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| CN101399493A (en) * | 2007-09-27 | 2009-04-01 | 艾默生网络能源***有限公司 | AC/DC rectifier |
| CN113432241A (en) * | 2021-06-21 | 2021-09-24 | Tcl空调器(中山)有限公司 | Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner |
| CN113432207A (en) * | 2021-06-21 | 2021-09-24 | Tcl空调器(中山)有限公司 | Communication control method and device for indoor and outdoor units of air conditioner, air conditioner and storage medium |
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2022
- 2022-07-25 CN CN202210877026.9A patent/CN115218375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399493A (en) * | 2007-09-27 | 2009-04-01 | 艾默生网络能源***有限公司 | AC/DC rectifier |
| CN113432241A (en) * | 2021-06-21 | 2021-09-24 | Tcl空调器(中山)有限公司 | Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner |
| CN113432207A (en) * | 2021-06-21 | 2021-09-24 | Tcl空调器(中山)有限公司 | Communication control method and device for indoor and outdoor units of air conditioner, air conditioner and storage medium |
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