CN113432241A - Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner - Google Patents
Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner Download PDFInfo
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- CN113432241A CN113432241A CN202110686227.6A CN202110686227A CN113432241A CN 113432241 A CN113432241 A CN 113432241A CN 202110686227 A CN202110686227 A CN 202110686227A CN 113432241 A CN113432241 A CN 113432241A
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- 238000004891 communication Methods 0.000 title claims abstract description 220
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 238000012937 correction Methods 0.000 claims abstract description 116
- 238000001514 detection method Methods 0.000 claims abstract description 76
- 238000011084 recovery Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 35
- 238000012423 maintenance Methods 0.000 claims description 28
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 abstract description 26
- 230000001276 controlling effect Effects 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
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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
- F24F11/52—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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/88—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
The application provides an air conditioner indoor and outdoor unit communication fault processing method, a control system and an air conditioner, relates to the technical field of air conditioners, and solves the problem that the lower the ambient temperature is, the more the equivalent series resistance of an electrolytic capacitor is increased rapidly, and the communication fault of an indoor unit and an outdoor unit is caused, wherein the air conditioner comprises an outdoor unit electric control board, a power factor correction circuit is arranged on the electric control board, and the air conditioner comprises the following steps: acquiring communication fault detection information of an indoor unit and an outdoor unit; and according to the communication fault detection information, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value, and adjusting the current carrier frequency of the power factor correction circuit and the on-off of a communication switch of the indoor unit and the outdoor unit according to the outdoor environment temperature set value and the current outdoor environment temperature value. The current carrier frequency of the power factor correction circuit is adjusted to adjust the heat generated by a power device in the outdoor unit, so that the temperature of the outdoor unit is adjusted, and the problem of communication faults of the indoor unit and the outdoor unit caused by the increase of the equivalent series resistance is solved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner indoor and outdoor unit communication fault processing method, a control system and an air conditioner.
Background
At present, the indoor and outdoor units of the household variable frequency air conditioner are communicated in a zero-live line communication mode, a zero-live line communication circuit is composed of common devices such as a resistor, a capacitor, a diode, a triode, an optocoupler and the like, an additional chip is not needed, and hardware is low in cost, so that the household variable frequency air conditioner is widely applied to the field of household variable frequency air conditioners.
As shown in fig. 1, the zero-live line communication is a current loop communication mode, the on and off of the optocoupler in the circuit is determined by the loop current value, the loop current value is greatly influenced by the power supply voltage and the total loop resistance in the circuit, and the lower the ambient temperature is, the more the equivalent series resistance of the electrolytic capacitor for storing energy and providing power will be greatly increased, the abnormal increase of the resistance in the loop is caused, so that the current of the communication loop is reduced, the optocoupler can not be switched on, the internal and external machines can not normally communicate, the communication fault is reported, and the normal use of the user is influenced.
Disclosure of Invention
The application provides a communication fault processing method for an internal machine and an external machine of an air conditioner, which aims to solve the problem that the normal operation of the air conditioner is influenced by the communication fault of the internal machine and the external machine caused by the increase of the equivalent series resistance of an electrolytic capacitor for providing energy storage for a communication loop power supply at a low temperature.
On one hand, the application provides an air conditioner indoor and outdoor unit communication fault processing method, the air conditioner comprises an outdoor unit electric control board, a power factor correction circuit is arranged on the electric control board, and the method comprises the following steps:
acquiring communication fault detection information of the indoor unit and the outdoor unit;
acquiring an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
and adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value.
In a possible implementation manner of the present application, before obtaining the communication fault detection information of the indoor unit and the outdoor unit, the method further includes:
and acquiring a first carrier frequency value of the power factor correction circuit.
In a possible implementation manner of the present application, obtaining an outdoor environment temperature setting value and a current outdoor environment temperature value according to the communication fault detection information includes:
the communication fault detection information comprises normal communication and abnormal communication;
if the communication fault detection information indicates that the communication is normal, the power factor correction circuit maintains a first carrier frequency value to operate;
and if the communication fault detection information is abnormal, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value.
In a possible implementation manner of the present application, the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
acquiring frequency adjustment information of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value;
and within a preset first adjusting time length, adjusting the current carrier frequency of the power factor correcting circuit according to the frequency adjusting information.
In a possible implementation manner of the present application, the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
comparing the outdoor environment temperature set value with the current outdoor environment temperature value to obtain an outdoor environment temperature comparison result;
if the outdoor temperature comparison result indicates that the current outdoor environment temperature value is greater than the outdoor environment temperature set value, the frequency adjustment information is maintenance information, and the maintenance information indicates the power factor correction circuit to maintain the first carrier frequency value to operate;
and if the outdoor temperature comparison result shows that the current outdoor environment temperature value is smaller than the set outdoor environment temperature value, the frequency adjustment information is frequency increasing information, and the frequency increasing information indicates that the power factor correction circuit operates at a second carrier frequency value within a preset first adjustment time length, wherein the second carrier frequency value is larger than the first carrier frequency value.
In a possible implementation manner of the present application, after the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further includes:
after a preset first adjustment time, starting a communication switch of the indoor unit and the outdoor unit;
acquiring communication recovery detection information of the indoor unit and the outdoor unit, wherein the communication recovery detection information comprises communication recovery normality and communication recovery abnormity;
and if the communication recovery detection information indicates that the communication is recovered to be normal, the frequency adjustment information is frequency reduction information, and the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value.
In a possible implementation manner of the present application, after the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further includes:
acquiring a preset upper limit duration;
if the communication recovery detection information is abnormal, comparing a preset first adjusting time length with a preset upper limit time length to obtain a time length comparison result;
if the time length comparison result indicates that the first adjustment time length is smaller than the time length upper limit, the frequency adjustment information is maintenance information, and the maintenance information indicates that the power factor correction circuit operates at the second carrier frequency value within a preset second adjustment time length, wherein the second adjustment time length is larger than the first adjustment time length;
and if the time length comparison result shows that the first adjustment time length is greater than or equal to the time length upper limit, the frequency adjustment information is stop information, and the stop information indicates that the power factor correction circuit stops running.
In a possible implementation manner of the present application, after the preset first adjustment duration, the turning on the communication switch of the indoor unit and the outdoor unit includes:
acquiring a communication switch opening instruction;
and controlling the communication switch of the air conditioner external unit to be turned on according to the communication switch turning-on instruction.
In a possible implementation manner of the present application, the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
acquiring the adjustment information instruction;
and acquiring the frequency adjustment information of the power factor correction circuit according to the adjustment information instruction.
In another aspect, the present application provides a control system comprising:
the communication fault detection module is used for acquiring communication fault detection information of the indoor unit and the outdoor unit;
the outdoor environment temperature acquisition module is used for acquiring an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
and the adjusting module is used for adjusting the current carrier frequency of the power factor correcting circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value.
The system further comprises:
and the first carrier frequency value acquisition module is used for acquiring a first carrier frequency value of the power factor correction circuit.
The outdoor environment temperature acquisition module specifically comprises:
the communication fault detection information comprises normal communication and abnormal communication;
if the communication fault detection information indicates that the communication is normal, the power factor correction circuit maintains a first carrier frequency value to operate;
and if the communication fault detection information is abnormal, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value.
The outdoor environment temperature acquisition module specifically comprises:
the frequency adjusting circuit is used for acquiring frequency adjusting information of the power factor correcting circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value;
and within a preset first adjusting time length, the carrier frequency adjusting circuit is used for adjusting the current carrier frequency of the power factor correction circuit according to the frequency adjusting information.
The outdoor environment temperature acquisition module specifically comprises:
the outdoor environment temperature setting value is used for comparing the outdoor environment temperature setting value with the current outdoor environment temperature value to obtain an outdoor environment temperature comparison result;
if the outdoor temperature comparison result indicates that the current outdoor environment temperature value is greater than the outdoor environment temperature set value, the frequency adjustment information is maintenance information, and the maintenance information indicates the power factor correction circuit to maintain the first carrier frequency value to operate;
and if the outdoor temperature comparison result shows that the current outdoor environment temperature value is smaller than the set outdoor environment temperature value, the frequency adjustment information is frequency increasing information, and the frequency increasing information indicates that the power factor correction circuit operates at a second carrier frequency value within a preset first adjustment time length, wherein the second carrier frequency value is larger than the first carrier frequency value.
The control system further comprises a communication recovery detection module, and the communication recovery detection module specifically comprises:
after a preset first adjustment time, starting a communication switch of the indoor unit and the outdoor unit;
the communication recovery detection information comprises communication recovery normality and communication recovery abnormality;
and if the communication recovery detection information indicates that the communication is recovered to be normal, the frequency adjustment information is frequency reduction information, and the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value.
The control system further comprises a duration comparison module, wherein the duration comparison module specifically comprises:
the method comprises the steps of obtaining a preset upper limit duration;
if the communication recovery detection information is abnormal, comparing a preset first adjusting time length with a preset upper limit time length to obtain a time length comparison result;
if the time length comparison result indicates that the first adjustment time length is smaller than the time length upper limit, the frequency adjustment information is maintenance information, and the maintenance information indicates that the power factor correction circuit operates at the second carrier frequency value within a preset second adjustment time length, wherein the second adjustment time length is larger than the first adjustment time length;
and if the time length comparison result shows that the first adjustment time length is greater than or equal to the time length upper limit, the frequency adjustment information is stop information, and the stop information indicates that the power factor correction circuit stops running.
The communication recovery detection module further comprises:
the communication switch starting instruction receiving module is used for acquiring a communication switch starting instruction;
and the communication switch starting instruction execution module controls the communication switch of the air conditioner external unit to be started according to the communication switch starting instruction.
The outdoor ambient temperature acquisition module further includes:
the adjustment information instruction acquisition module is used for acquiring the adjustment information instruction;
and the adjustment information instruction execution module is used for acquiring the frequency adjustment information of the power factor correction circuit according to the adjustment information instruction.
In another aspect, the present application also provides an air conditioner, including: the air conditioner comprises an indoor unit, an outdoor unit and an outdoor unit electric control board, wherein a power factor correction circuit is arranged on the electric control board, and the air conditioner adopts the air conditioner indoor and outdoor unit communication fault processing method or is provided with the control system.
According to the communication fault detection method and device, when the communication between the indoor unit and the outdoor unit is abnormal, the communication fault detection information of the indoor unit and the outdoor unit is obtained, the outdoor environment temperature set value and the current outdoor environment temperature value are obtained, whether the communication between the indoor unit and the outdoor unit is abnormal due to the outdoor environment temperature is judged, the current carrier frequency of the power factor correction circuit is adjusted to adjust the heat generated by a power device in the outdoor unit, the temperature of the outdoor unit is adjusted, and the problem that the normal operation of an air conditioner is affected by the communication fault of the indoor unit and the outdoor unit caused by the fact that the equivalent series resistance of an electrolytic capacitor providing energy storage for a communication loop power supply is increased at a low temperature is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art current loop circuit provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a configuration of a switching dc boost circuit of an air conditioner provided in an embodiment of the present application;
fig. 3 is a flowchart illustrating an embodiment of a method for handling communication failure between an air conditioner internal and external units according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating an embodiment of a method for handling communication failure between an air conditioner indoor unit and an air conditioner outdoor unit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an embodiment of the control system in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 inventive exercise, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
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 invention. 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 invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention 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 application provides an air conditioner indoor and outdoor unit communication fault processing method, a control system and an air conditioner, which are respectively described in detail below.
Because the switch-on and switch-off of the optical coupler in the communication current loop circuit of the indoor and outdoor communication of the air conditioner are determined by the current value of the communication current loop circuit, the current value of the current loop circuit is greatly influenced by the power supply voltage and the total resistance of the current loop circuit in the current loop circuit, because the environmental temperature is lower, the equivalent series resistance of the electrolytic capacitor for storing energy and providing power can be greatly increased, the resistance in the current loop circuit is increased abnormally, the communication loop current is reduced, the optical coupler can not be switched on, and the indoor machine and the outdoor machine can not communicate normally.
The Equivalent Series Resistance (ESR) of the electrolytic capacitor is composed of an electrolyte Resistance, an alumina Resistance of a negative electrode plate, an aluminum plate and an anode foil Resistance. Wherein the resistivity of the electrolyte decreases with increasing temperature and the resistance of the alumina, aluminum plate and anode foil increases with increasing temperature, and therefore the ESR of the electrolytic capacitor will decrease with increasing ambient temperature.
Illustratively, when the ambient temperature is increased from 25 ℃ to the high temperature limit of the electrolytic capacitor, the ESR of the electrolytic capacitor will be reduced by about 35-50%. However, if the temperature is reduced to the low temperature limit of the electrolytic capacitor, the ESR of the electrolytic capacitor can be increased by more than 10 times, and the ESR of the electrolytic capacitor can be increased more in a device with a rated temperature of-20 ℃ or-40 ℃, and the ESR of the electrolytic capacitor can be increased by more than 100 times in a device with a rated temperature of-40 ℃.
As shown in fig. 2, the switching dc boost circuit of the air conditioner is provided, in which the switching power consumption of the power device IGBT and the power diode D is large and the heat generation is large due to the long-term frequent switching state. Wherein, the carrier frequency of power factor correction circuit is higher, then power device switching loss is bigger, power device IGBT in the PFC circuit promptly, the produced heat such as power diode IGBT and inductance L is more, and because frequently strikeing, electrolytic capacitor E also can produce more heat for the energy storage, thereby promote the interior temperature of automatically controlled box body at control circuit board place in the air conditioner, consequently, this application is through the environment temperature that improves electrolytic capacitor and locates, with the ESR that reduces electrolytic capacitor, thereby total resistance value in the reduction air conditioner current loop circuit, with the normal conduction of opto-coupler in the realization current loop circuit, thereby realize the normal communication of the inside and outside machine of air conditioner.
As shown in fig. 3 and 4, which are schematic flow diagrams illustrating an embodiment of a method for processing communication faults of an indoor unit and an outdoor unit of an air conditioner in the embodiment of the present application, the air conditioner includes an outdoor unit electric control board, a power factor correction circuit is disposed on the electric control board, and the method for processing communication faults of the indoor unit and the outdoor unit of the air conditioner includes steps 101 to 103:
101. acquiring communication fault detection information of an indoor unit and an outdoor unit;
in the operation process of the air conditioner, the communication fault detection module in a communication current loop circuit between an indoor unit and an outdoor unit of the air conditioner is used for detecting the communication conditions of the indoor unit and the outdoor unit in real time, the communication fault detection module can be a voltage sensor, a current sensor or a sampling resistor in the communication current loop circuit, and power data of the communication current loop circuit are sent to a main controller of the air conditioner through the communication fault detection module so that the air conditioner can acquire the communication fault detection information of the indoor unit and the outdoor unit in real time.
102. Acquiring an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
the current outdoor environment temperature value is the current temperature value of the outdoor environment where the outdoor unit of the air conditioner is located, the set value of the outdoor environment temperature is preset in the air conditioner, the set value of the outdoor environment temperature is used for judging whether the outdoor environment temperature value reaches the set value of the outdoor environment temperature, therefore, when the communication fault detection information indicates that the outdoor unit of the air conditioner has a communication fault, the set value of the outdoor environment temperature and the current outdoor environment temperature value are obtained, and the current outdoor environment temperature value is judged to be the lowest value, the set value of the outdoor environment temperature can be manually set in advance, or the air conditioner can be set in a self-adaptive mode according to the detection of the outdoor environment temperature, and the current outdoor environment temperature value can be detected through a temperature sensor installed in the outdoor unit of the air conditioner.
103. And adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value.
After the current outdoor environment temperature value and the outdoor environment temperature set value are obtained, the operating frequency of the power factor correction circuit is adjusted according to the specific comparison condition of the current outdoor environment temperature value and the outdoor environment temperature set value, so that the temperature inside the outdoor unit of the air conditioner is adjusted, the temperature of the current loop circuit of the air conditioner at one end of the outdoor unit is adjusted, and the ESR and the total resistance value of an electrolytic capacitor in the current loop circuit of the outdoor unit are reduced.
This application is when communication is unusual at the indoor outer machine, acquire the communication fault detection information of indoor outer machine, and acquire outdoor ambient temperature set value and current outdoor ambient temperature value, judge whether the indoor outer machine communication that leads to because of outdoor ambient temperature is unusual, current carrier frequency through adjustment power factor correction circuit, with the heat of the production of the power device in the regulation outdoor machine, thereby the temperature of adjustment outdoor machine, with the indoor outer machine communication that leads to because of the low temperature is unusual, through the start-stop of the communication switch of adjustment indoor outer machine, whether check communication resumes normally, consequently, the communication of this application resumes the indoor outer machine under the prerequisite that does not change power factor correction circuit's output voltage, protect the communication function of indoor outer machine better.
In another embodiment of the present application, before the communication failure detection information of the indoor and outdoor units is obtained, the method further includes the steps of:
acquiring a first carrier frequency value of a power factor correction circuit;
the power factor correction circuit operates at a first carrier frequency value.
A first carrier frequency value of the power factor correction circuit is set in advance in the main controller of the air conditioner so that the power devices in the current loop circuit of the outdoor unit are operated at the first carrier frequency value, i.e., carrier frequency f1 shown in fig. 4, when the air conditioner is started.
In another embodiment of the present application, obtaining the set value of the outdoor environment temperature and the current outdoor environment temperature value according to the communication fault detection information includes:
the communication fault detection information comprises normal communication and abnormal communication;
if the communication fault detection information indicates that the communication is normal, the power factor correction circuit maintains the first carrier frequency value to operate;
and if the communication fault detection information is abnormal, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value.
When the communication fault detection information is normal, the communication fault of the indoor unit and the outdoor unit of the air conditioner is indicated, and further the current loop circuit of the indoor unit and the current loop circuit of the outdoor unit are not required to be adjusted, the power factor correction circuit is controlled to operate at a preset first carrier frequency value, when the communication fault detection information is abnormal, the communication fault of the indoor unit and the outdoor unit of the air conditioner is indicated, the outdoor environment temperature of the outdoor unit is required to be detected, an outdoor environment temperature set value and a current outdoor environment temperature value are obtained, and the current outdoor environment temperature value is judged to be the lowest value, namely whether the communication fault is caused by the fact that the electrolytic capacitor ESR for providing the power supply in a communication loop is increased suddenly due to the fact that the outdoor environment temperature is too low is judged.
In another embodiment of the present application, adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
acquiring frequency adjustment information of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value;
the method comprises the steps of judging an outdoor environment temperature set value and a current outdoor environment temperature value to obtain the current communication fault reason of the air conditioner and obtain the frequency adjustment information of a corresponding power factor correction circuit, wherein the frequency adjustment information of the power factor correction circuit can be frequency increasing information for controlling the current carrier frequency of the power factor correction circuit to increase frequency, frequency decreasing information for controlling the current carrier frequency of the power factor correction circuit to decrease frequency or stop information for controlling the power factor correction circuit to stop running.
And within a preset first adjusting time length, adjusting the current carrier frequency of the power factor correction circuit according to the frequency adjusting information.
After the air conditioner acquires the frequency adjustment information, a main controller in the air conditioner executes corresponding frequency adjustment information, namely controls the frequency up-down of the current carrier frequency of the power factor correction circuit.
In another embodiment of the present application, adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
comparing the set outdoor environment temperature value with the current outdoor environment temperature value to obtain an outdoor environment temperature comparison result;
when the air conditioner has communication fault, the set value of the outdoor environment temperature is compared with the current outdoor environment temperature value to judge whether the outdoor environment temperature value is close to the set value of the outdoor environment temperature, and an outdoor environment temperature comparison result is obtained. As shown in fig. 4, the outdoor ambient temperature setting value is set to TOutdoor temperatureOutdoor ambient temperature set value is TLow temperature thresholdThe outdoor environment temperature comparison result may be that the current outdoor environment temperature value is greater than the outdoor environment temperature set value or the current outdoor environment temperature value is less than the outdoor environment temperature set value.
As shown in fig. 4, if the outdoor temperature comparison result indicates that the current outdoor environment temperature value is greater than the outdoor environment temperature set value, the frequency adjustment information is the maintenance information, and the maintenance information indicates the power factor correction circuit to maintain the first carrier frequency value to operate.
For example, if the current outdoor environment temperature value is greater than the set outdoor environment temperature value, it indicates that the outdoor environment temperature is not lower than the set outdoor environment temperature value, it may be determined that the communication failure of the air conditioner is not the ESR surge of the electrolytic capacitor in the current loop circuit of the outdoor unit due to the excessively low outdoor environment temperature, and therefore the current carrier frequency of the power factor correction circuit does not need to be adjusted, that is, the frequency adjustment information is maintenance information, and the maintenance information indicates that the power factor correction circuit maintains the first carrier frequency value to operate.
And if the outdoor temperature comparison result shows that the current outdoor environment temperature value is smaller than the set outdoor environment temperature value, the frequency adjustment information is frequency increasing information, and within a preset first adjustment time length, the frequency increasing information indicates that the power factor correction circuit operates at a second carrier frequency value, wherein the second carrier frequency value is larger than the first carrier frequency value.
For example, if the current outdoor environment temperature value is less than the set outdoor environment temperature value, it indicates that when the outdoor environment temperature is lower than the set outdoor environment temperature value, that is, the communication fault of the air conditioner is a communication fault that is generated by an excessively large total resistance value of the current loop circuit due to an increase in ESR of the electrolytic capacitor in the current loop circuit of the outdoor unit caused by an excessively low outdoor environment temperature, and therefore the current carrier frequency of the power factor correction circuit needs to be increased to increase the temperature of the environment where the current loop circuit of the outdoor unit is located, and the ESR of the electrolytic capacitor is controlled to be decreased, so that within a preset first adjustment duration, the frequency adjustment information is frequency increase information, and within the preset first adjustment duration, the frequency increase information indicates that the power factor correction circuit operates at a second carrier frequency value, and simultaneously, the communication switch of the indoor unit and the outdoor unit is turned off, i.e., carrier frequency f2 as shown in fig. 4, for a first adjustment period of time, set to TAdjusting durationThe second carrier frequency value is greater than the first carrier frequency value.
In another embodiment of the present application, after adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further includes:
after a preset first adjustment time, starting a communication switch of an indoor unit and an outdoor unit;
acquiring communication recovery detection information of the indoor unit and the outdoor unit, wherein the communication recovery detection information comprises communication recovery normality and communication recovery abnormality;
and when the power factor correction circuit operates for the first adjustment time with the second carrier frequency value, the communication switch of the indoor unit and the communication switch of the outdoor unit are turned on, the communication condition of the indoor unit and the communication condition of the outdoor unit are detected, and whether the communication of the indoor unit and the communication condition of the outdoor unit are recovered to be normal or not is judged.
If the communication recovery detection information indicates that the communication is recovered to be normal, the frequency adjustment information is frequency reduction information, and the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value.
If the communication recovery detection information indicates that the communication is recovered to be normal, the temperature of the environment where the current loop circuit of the outdoor unit is located is increased, the ESR of the electrolytic capacitor is reduced, and the total resistance value of the current loop circuit of the outdoor unit is reduced after the power factor correction circuit operates at the second carrier frequency value for the first adjustment time, so that the temperature rise of the environment where the current loop circuit is located needs to be stopped, the carrier frequency of the power factor correction circuit is reduced, namely, the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value, and the normal working state of the air conditioner with the communication fault is recovered.
In another embodiment of the present application, after adjusting the current carrier frequency of the power factor correction circuit and the on/off of the communication switch of the indoor unit and the outdoor unit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further includes:
acquiring a preset upper limit duration;
when the air conditioner has a communication fault, although whether the ESR surge of the electrolytic capacitor in the current loop circuit of the outdoor unit is caused by the excessively low outdoor environment temperature can be checked by increasing the carrier frequency of the power factor correction circuit, the running time of the power factor correction circuit at the second carrier frequency needs to be controlled, so that the current loop circuit of the outdoor unit is prevented from being burnt out due to the excessively long running time of the power factor correction circuit at the second carrier frequency, and therefore, the preset upper limit time length is the highest time length for controlling the power factor correction circuit to run at the second carrier frequency.
If the communication recovery detection information is abnormal, comparing a preset first adjustment time length with a preset upper limit time length to obtain a time length comparison result;
and comparing the preset first adjustment time length with the preset upper limit time length to obtain whether the running time of the power factor correction circuit in the second carrier frequency exceeds the set highest running time length or not, wherein the obtained time length comparison result comprises that the first adjustment time length is less than the time length upper limit and the first adjustment time length is greater than or equal to the time length upper limit.
If the time length comparison result is that the first adjustment time length is smaller than the time length upper limit, the frequency adjustment information is maintenance information, the maintenance information indicates that the power factor correction circuit operates at a second carrier frequency value within a preset second adjustment time length, and the second adjustment time length is larger than the first adjustment time length;
after the power factor correction circuit is controlled to operate at the second carrier frequency for a preset first adjustment duration, the communication of the air conditioner is recovered to be abnormal, and the duration comparison result shows that the first adjustment duration is smaller than the duration upper limit, which indicates that the power factor correction circuit operates at the first adjustment duration in an up-conversion mode, the indoor unit and the outdoor unit of the air conditioner still have communication faults, and as the first adjustment duration does not exceed the preset duration upper limit, the power factor correction circuit is continuously controlled to operate at the second carrier frequency for a second adjustment duration, which is longer than the first adjustment duration, as shown in fig. 4, the first adjustment duration can be set as TAdjusting durationThe upper limit of the duration is T duration upper limit, and the second adjustment duration is TAdjusting duration＝TAdjusting durationAnd + t, namely the second adjustment time length is longer than the first adjustment time length by t, namely the power factor correction circuit is controlled to run at the second carrier frequency for a longer time, the temperature of the environment where the current loop circuit of the outdoor unit is located is continuously increased within the second adjustment time length, and the ESR of the electrolytic capacitor is controlled to be reduced.
As shown in fig. 4, after the power factor correction circuit is controlled to operate at the second carrier frequency for the preset second adjustment duration, when the indoor unit and the outdoor unit of the air conditioner are still in communication abnormality and the second adjustment duration does not exceed the upper limit of the duration, the power factor correction circuit is continuously controlled to operate at the second carrier frequency for a third adjustment duration, where the third adjustment duration is greater than the second adjustment duration, and for example, the second adjustment duration is set to TAdjusting durationWith an upper time limit of TUpper limit of durationThe second adjustment duration is TAdjusting duration＝TAdjusting duration+ t, i.e. the second adjusting time length is longer than the first adjusting time length t, when the power factor correction circuit is controlled to operate at the second carrier frequency for the third adjusting time length, it is continuously judged whether the communication recovery detection information is normal, and the detection and the adjustment are carried out in a circulating way until the power factor correction circuit is controlled to operate at the second carrier frequency for the Nth adjusting time length which is longer than the Nth adjusting time lengthOr equal to the upper duration limit.
And if the time length comparison result is that the first adjustment time length is greater than or equal to the time length upper limit, the frequency adjustment information is stop information, and the stop information indicates that the power factor correction circuit stops running.
When the power factor correction circuit operates at the second carrier frequency for the first adjustment time and reaches the upper limit of the time, the communication fault still exists between the indoor unit and the outdoor unit of the air conditioner, which indicates that the communication fault between the indoor unit and the outdoor unit of the air conditioner is not the ESR surge of the electrolytic capacitor in the current loop circuit of the outdoor unit caused by the excessively low outdoor environment temperature, so that the operation of the power factor correction circuit at the second carrier frequency needs to be stopped, and the damage to the current loop circuit of the outdoor unit of the air conditioner is reduced.
In another embodiment of the present application, after a preset first adjustment duration, turning on a communication switch of an indoor unit and an outdoor unit includes:
acquiring a communication switch opening instruction;
the air conditioner is internally provided with a signal receiving module, a user can send a communication switch opening instruction signal to the air conditioner through the remote control equipment in the running process of the air conditioner, and the signal receiving module of the air conditioner acquires the communication switch opening instruction.
And controlling the communication switch of the air conditioner external unit to be turned on according to the communication switch turning-on instruction.
After the communication switch opening instruction is obtained, the main controller of the air conditioner opens the communication functions of the indoor unit and the outdoor unit according to the communication switch opening instruction, and the communication function of the air conditioner is manually regulated and controlled by a user.
In another embodiment of the present application, adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value includes:
acquiring an adjustment information instruction;
in the operation process of the air conditioner, a user can send an adjustment information instruction to the air conditioner through the remote control device, and a signal receiving module of the air conditioner obtains the adjustment information instruction.
And acquiring frequency adjustment information of the power factor correction circuit according to the adjustment direction instruction.
After the adjustment information instruction is obtained, the main controller of the air conditioner obtains the frequency adjustment information of the corresponding power factor correction circuit according to the adjustment direction instruction, and adjusts the power factor correction circuit according to the frequency adjustment information of the power factor correction circuit.
In order to better implement the method for processing the communication fault of the indoor unit and the outdoor unit of the air conditioner in the embodiment of the present application, based on the method for processing the communication fault of the indoor unit and the outdoor unit of the air conditioner, a control system is further provided in the embodiment of the present application, as shown in fig. 5, the control system 200 includes:
a communication fault detection module 201, configured to obtain communication fault detection information of the indoor unit and the outdoor unit;
an outdoor environment temperature obtaining module 202, configured to obtain an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
and the adjusting module 203 is configured to adjust a current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value.
The control system further comprises:
the first carrier frequency value acquisition module is used for acquiring a first carrier frequency value of the power factor correction circuit, and the power factor correction circuit operates by the first carrier frequency value.
The outdoor ambient temperature obtaining module 202 specifically includes:
the communication fault detection information comprises normal communication and abnormal communication;
if the communication fault detection information indicates that the communication is normal, the power factor correction circuit maintains the first carrier frequency value to operate;
and if the communication fault detection information is abnormal, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value.
The adjusting module 203 specifically includes:
the frequency adjusting circuit is used for acquiring frequency adjusting information of the power factor correcting circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value;
and within a preset first adjusting time length, adjusting the current carrier frequency of the power factor correction circuit according to the frequency adjusting information.
The adjusting module 203 specifically includes:
the outdoor environment temperature setting value is compared with the current outdoor environment temperature value to obtain an outdoor environment temperature comparison result;
if the outdoor temperature comparison result shows that the current outdoor environment temperature value is greater than the outdoor environment temperature set value, the frequency adjustment information is maintenance information, and the maintenance information indicates the power factor correction circuit to maintain the first carrier frequency value to operate;
and if the outdoor temperature comparison result shows that the current outdoor environment temperature value is smaller than the set outdoor environment temperature value, the frequency adjustment information is frequency increasing information, and within a preset first adjustment time length, the frequency increasing information indicates that the power factor correction circuit operates at a second carrier frequency value, wherein the second carrier frequency value is larger than the first carrier frequency value.
The control system further comprises a communication recovery detection module, and the communication recovery detection module specifically comprises:
after a preset first adjustment time, starting a communication switch of an indoor unit and an outdoor unit;
the communication recovery detection information comprises communication recovery normality and communication recovery abnormality;
if the communication recovery detection information indicates that the communication is recovered to be normal, the frequency adjustment information is frequency reduction information, and the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value.
The control system further comprises a time length comparison module, wherein the time length comparison module specifically comprises:
the method comprises the steps of obtaining a preset upper limit duration;
if the communication recovery detection information is abnormal, comparing a preset first adjustment time length with a preset upper limit time length to obtain a time length comparison result;
if the time length comparison result is that the first adjustment time length is smaller than the time length upper limit, the frequency adjustment information is maintenance information, the maintenance information indicates that the power factor correction circuit operates at a second carrier frequency value within a preset second adjustment time length, and the second adjustment time length is larger than the first adjustment time length;
and if the time length comparison result is that the first adjustment time length is greater than or equal to the time length upper limit, the frequency adjustment information is stop information, and the stop information indicates that the power factor correction circuit stops running.
The communication recovery detection module further comprises:
the communication switch starting instruction receiving module is used for acquiring a communication switch starting instruction;
and the communication switch starting instruction execution module controls the communication switch of the air conditioner outdoor unit to be started according to the communication switch starting instruction.
The adjusting module 203 further includes:
the adjustment information instruction acquisition module acquires an adjustment information instruction;
and the adjustment information instruction execution module acquires the frequency adjustment information of the power factor correction circuit according to the adjustment information instruction.
In another embodiment of the present application, there is also provided an air conditioner including: the air conditioner comprises an indoor unit, an outdoor unit and an outdoor unit electric control board, wherein a power factor correction circuit is arranged on the electric control board, and an air conditioner indoor and outdoor unit communication fault processing method or a control system is adopted by the air conditioner.
The method for processing communication fault of the indoor unit and the outdoor unit of the air conditioner, the control system and the air conditioner provided by the embodiment of the application are described in detail, a specific embodiment is applied in the method for explaining the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, 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 invention.
Claims (11)
1. A communication fault processing method for an indoor unit and an outdoor unit of an air conditioner is characterized in that the air conditioner comprises an outdoor unit electric control board, a power factor correction circuit is arranged on the electric control board, and the method comprises the following steps:
acquiring communication fault detection information of the indoor unit and the outdoor unit;
acquiring an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
and adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value.
2. The communication failure handling method of an indoor unit and an outdoor unit of an air conditioner as claimed in claim 1, wherein before the communication failure detection information of the indoor unit and the outdoor unit is acquired, the method further comprises:
and acquiring a first carrier frequency value of the power factor correction circuit.
3. The method for processing communication failure of an indoor unit and an outdoor unit of an air conditioner according to claim 2, wherein the obtaining of the outdoor environment temperature setting value and the current outdoor environment temperature value according to the communication failure detection information comprises:
the communication fault detection information comprises normal communication and abnormal communication;
if the communication fault detection information indicates that the communication is normal, the power factor correction circuit maintains a first carrier frequency value to operate;
and if the communication fault detection information is abnormal, acquiring an outdoor environment temperature set value and a current outdoor environment temperature value.
4. The method for handling communication failure between an indoor unit and an outdoor unit of an air conditioner as claimed in claim 2, wherein said adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value comprises:
acquiring frequency adjustment information of the power factor correction circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value;
and within a preset first adjusting time length, adjusting the current carrier frequency of the power factor correction circuit according to the frequency adjusting information.
5. The method for handling communication failure between an indoor unit and an outdoor unit of an air conditioner as claimed in claim 4, wherein said adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value comprises:
comparing the outdoor environment temperature set value with the current outdoor environment temperature value to obtain an outdoor environment temperature comparison result;
if the outdoor temperature comparison result indicates that the current outdoor environment temperature value is greater than the outdoor environment temperature set value, the frequency adjustment information is maintenance information, and the maintenance information indicates the power factor correction circuit to maintain the first carrier frequency value to operate;
and if the outdoor temperature comparison result shows that the current outdoor environment temperature value is smaller than the set outdoor environment temperature value, the frequency adjustment information is frequency increasing information, and within a preset first adjustment time length, the frequency increasing information indicates that the power factor correction circuit operates at a second carrier frequency value, wherein the second carrier frequency value is larger than the first carrier frequency value.
6. The communication fault handling method for an outdoor unit and indoor unit of an air conditioner as claimed in claim 5, wherein after the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further comprises:
after a preset first adjustment time, starting a communication switch of the indoor unit and the outdoor unit;
acquiring communication recovery detection information of the indoor unit and the outdoor unit, wherein the communication recovery detection information comprises communication recovery normality and communication recovery abnormity;
and if the communication recovery detection information indicates that the communication is recovered to be normal, the frequency adjustment information is frequency reduction information, and the maintenance information indicates that the power factor correction circuit operates at the first carrier frequency value.
7. The communication fault handling method for an outdoor unit and indoor unit of an air conditioner as claimed in claim 6, wherein after the adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value, the method further comprises:
acquiring a preset upper limit duration;
if the communication recovery detection information is abnormal, comparing a preset first adjustment time length with a preset upper limit time length to obtain a time length comparison result;
if the time length comparison result shows that the first adjustment time length is smaller than the time length upper limit, the frequency adjustment information is maintenance information, and the maintenance information indicates that the power factor correction circuit operates at the second carrier frequency value within a preset second adjustment time length, wherein the second adjustment time length is larger than the first adjustment time length;
and if the time length comparison result shows that the first adjustment time length is greater than or equal to the time length upper limit, the frequency adjustment information is stop information, and the stop information indicates that the power factor correction circuit stops running.
8. The method for handling the communication failure between the indoor unit and the outdoor unit of the air conditioner as claimed in claim 6, wherein the turning on the communication switch of the indoor unit and the outdoor unit after the preset first adjustment duration comprises:
acquiring a communication switch opening instruction;
and controlling the communication switch of the air conditioner external unit to be turned on according to the communication switch turning-on instruction.
9. The method for handling communication failure between an indoor unit and an outdoor unit of an air conditioner as claimed in claim 4, wherein said adjusting the current carrier frequency of the power factor correction circuit according to the outdoor environment temperature setting value and the current outdoor environment temperature value comprises:
acquiring the adjustment information instruction;
and acquiring the frequency adjustment information of the power factor correction circuit according to the adjustment information instruction.
10. A control system, characterized in that the control system comprises:
the communication fault detection module is used for acquiring communication fault detection information of the indoor unit and the outdoor unit;
the outdoor environment temperature acquisition module is used for acquiring an outdoor environment temperature set value and a current outdoor environment temperature value according to the communication fault detection information;
and the adjusting module is used for adjusting the current carrier frequency of the power factor correcting circuit according to the outdoor environment temperature set value and the current outdoor environment temperature value.
11. An air conditioner, characterized in that the air conditioner comprises: the air conditioner comprises an indoor unit, an outdoor unit and an outdoor unit electric control board, wherein a power factor correction circuit is arranged on the electric control board, and the air conditioner adopts the communication fault processing method of the indoor unit and the outdoor unit of the air conditioner as claimed in any one of claims 1 to 9 or the control system as claimed in claim 10.
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| CN202110686227.6A CN113432241A (en) | 2021-06-21 | 2021-06-21 | Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner |
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| CN202110686227.6A CN113432241A (en) | 2021-06-21 | 2021-06-21 | Air conditioner indoor and outdoor unit communication fault processing method, control system and air conditioner |
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