CN114151927B - Anti-frosting control method and device and air conditioner - Google Patents
Anti-frosting control method and device and air conditioner Download PDFInfo
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- CN114151927B CN114151927B CN202111425899.8A CN202111425899A CN114151927B CN 114151927 B CN114151927 B CN 114151927B CN 202111425899 A CN202111425899 A CN 202111425899A CN 114151927 B CN114151927 B CN 114151927B
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an anti-frosting control method, an anti-frosting control device and an air conditioner; wherein, the method comprises the following steps: real-time T acquisition during heating operation of air conditioner Outer plate A first time from a first temperature threshold to a second temperature threshold; judging whether the first time is greater than a preset first time threshold value or not; if so, when T Outer plate When the temperature is not greater than the third temperature threshold value, controlling the air conditioner to enter a frost prevention mode; controlling the air conditioner to operate according to a first control mode corresponding to the first stage, and judging T Outer plate Whether or not an anti-frosting exit condition is satisfied; if not, when the running time of the first control mode reaches a second time threshold, the air conditioner is controlled to be switched from the first stage to the second stage, and the air conditioner is controlled to run according to a second control mode corresponding to the second stage until the anti-frosting mode is exited. This mode can effectively improve the air conditioner problem of frosting through preventing the mode of frosting to the internal unit stops when having avoided the defrosting, has improved user's experience degree.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an anti-frosting control method and device and an air conditioner.
Background
At present, when the air conditioner is used for rated heating, the outdoor unit generally cannot frost, but the outdoor unit frosts due to more uncontrollable factors of the air conditioner in production and use, such as less filling amount, liquid leakage, more dust of the outdoor unit and the like. At the moment, the outer machine of the air conditioner needs to be defrosted, when the outer machine is defrosted, the inner machine of the air conditioner stops rotating, so that the indoor temperature is reduced, the heating experience of a user is influenced, and the complaint rate is high.
Disclosure of Invention
In view of this, the present invention provides a control method and device for preventing frosting and an air conditioner, which effectively improve the frosting problem of the air conditioner, thereby avoiding the stop of an internal machine during defrosting, improving the experience of a user, and reducing the complaint rate of the air conditioner.
In a first aspect, an embodiment of the present invention provides an anti-frosting control method, applied to a controller of an air conditioner, including: when the heating operation of the air conditioner is monitored, the temperature T of an outdoor side coil of the air conditioner is acquired in real time Outer plate And T Outer plate A first time from a first temperature threshold to a second temperature threshold; judging whether the first time is greater than a preset first time threshold value or not; if so, when T Outer plate When the temperature is not greater than the third temperature threshold value, controlling the air conditioner to enter a frost prevention mode; the anti-frosting mode comprises a first stage and a second stage which are sequentially arranged; controlling the air conditioner to operate according to a first control mode corresponding to the first stage, and judging T Outer plate Whether or not an anti-frosting exit condition is satisfied; if not, when the running time of the first control mode reaches a second time threshold, the air conditioner is controlled to be switched from the first stage to the second stage, and the air conditioner is controlled to run according to a second control mode corresponding to the second stage until the anti-frosting mode is exited.
The embodiment of the invention provides an anti-frosting control method, which can effectively improve the frosting problem of an air conditioner through an anti-frosting mode, thereby avoiding the stop of an internal machine during defrosting, improving the experience degree of a user, and simultaneously improving the experience degree of the userThe complaint rate is reduced; furthermore, by T Outer plate The first time and the preset first time threshold for reducing the first temperature threshold to the second temperature threshold can also avoid the misoperation of the air conditioner in the low-temperature heating mode and the ultra-low-temperature heating mode, and the control precision of the air conditioner in frosting prevention during rated heating operation is improved.
Preferably, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the determining T is performed Outer plate A step of determining whether or not a frost prevention exit condition is satisfied, including: judgment of T Outer plate Whether the temperature is not less than the second temperature threshold value and whether the duration reaches a third time threshold value; if both are true, T is determined Outer plate Meeting the anti-frosting exit condition.
By judging T Outer plate Whether or not a frost prevention exit condition is satisfied, and when satisfied, exits a frost prevention mode, thereby ensuring T Outer plate The temperature is maintained above 0 ℃, so that the frosting possibility of the outdoor unit is further reduced, and the frosting of the outdoor unit is avoided.
Preferably, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the air conditioner further includes a compressor and an outdoor fan, and the step of controlling the air conditioner to operate according to a first control mode corresponding to the first stage includes: controlling the compressor to operate at a reduced frequency according to a first control parameter, and controlling the outdoor fan to operate at an increased speed according to a second control parameter; wherein the first control parameter is 4Hz, and the second control parameter is 100r/min.
Preferably, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the step of operating according to the second control mode corresponding to the second stage includes: controlling the compressor to operate at a reduced frequency according to a third control parameter; wherein the third control parameter is 2Hz.
Preferably, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the step of operating according to the second control mode corresponding to the second stage further includes: judging T in the second control mode operation Outer plate Whether or not an anti-frosting exit condition is satisfied; if not, according toAnd circulating the second control mode until the anti-frosting mode is exited by a preset fourth time threshold.
Preferably, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the method further includes: if T is Outer plate And meeting the condition of exiting frost prevention, and controlling the air conditioner to exit the frost prevention mode.
Preferably, embodiments of the present invention provide a sixth possible implementation manner of the first aspect, where the first temperature threshold is 2 ℃, the second temperature threshold is 0 ℃, and the third temperature threshold is-1 ℃.
In a second aspect, an embodiment of the present invention further provides an anti-frosting control device, applied to a controller of an air conditioner, the device including: the acquisition module is used for acquiring the temperature T of the outdoor coil of the air conditioner in real time when the heating operation of the air conditioner is monitored Outer plate And T Outer plate A first time from a first temperature threshold to a second temperature threshold; the judging module is used for judging whether the first time is greater than a preset first time threshold value or not; entering a control module for if T is Outer plate When the temperature is not greater than the third temperature threshold value, controlling the air conditioner to enter a frost prevention mode; the anti-frosting mode comprises a first stage and a second stage which are sequentially arranged; the operation control module is used for controlling the air conditioner to operate according to a first control mode corresponding to the first stage and judging T Outer plate Whether or not an anti-frosting exit condition is satisfied; and the switching control module is used for controlling the air conditioner to be switched from the first stage to the second stage and to operate according to the second control mode corresponding to the second stage until the air conditioner exits from the anti-frosting mode if the operation duration of the first control mode reaches the second time threshold.
In a third aspect, an embodiment of the present invention further provides an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method in the first aspect when executing the computer program.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method in the first aspect.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides an anti-frosting control method and device and an air conditioner, and the anti-frosting mode can effectively improve the frosting problem of the air conditioner, so that the stop of an internal machine during defrosting is avoided, the experience degree of a user is improved, and the complaint rate is reduced; furthermore, by T Outer plate The first time and the preset first time threshold for reducing the first temperature threshold to the second temperature threshold can also avoid the misoperation of the air conditioner in the low-temperature heating mode and the ultra-low-temperature heating mode, and the control precision of the air conditioner in frosting prevention during rated heating operation is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a control method for preventing frosting according to an embodiment of the present invention;
FIG. 2 is a flow chart of another control method for preventing frosting according to the embodiment of the present invention;
FIG. 3 is a schematic view of an anti-frosting control apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
For the convenience of understanding the present embodiment, a detailed description will be given below of an anti-frosting control method provided by the present embodiment. The execution main body is a controller of the air conditioner, the controller further comprises a compressor, an outdoor fan and an indoor fan which are in communication connection with the controller, a temperature sensor and the like arranged at an outdoor coil pipe, the structure of the air conditioner can be specifically set according to actual conditions, and detailed description is omitted here in the embodiment of the invention.
Based on the controller of the air conditioner, an embodiment of the present invention provides a control method for preventing frosting, as shown in fig. 1, the method includes the following steps:
step S102, when the heating operation of the air conditioner is monitored, the temperature T of the outdoor side coil of the air conditioner is obtained in real time Outer plate And T Outer plate A first time from a first temperature threshold to a second temperature threshold;
specifically, the air conditioner is also provided with an air conditioner remote controller or remote control equipment and the like which are in communication connection with the controller, when the indoor environment temperature is low, a user can set a heating mode through the air conditioner remote controller, and the controller controls the air conditioner to perform heating operation. The heating mode mainly comprises a low-temperature heating mode, an ultralow-temperature heating mode and a rated heating mode, for example, the heating in the low-temperature environment is called the low-temperature heating mode, the heating in the ultralow-temperature environment is called the ultralow-temperature heating mode, and the low-temperature environment and the ultralow-temperature environment can be determined according to preset temperatures; in practical applications, the heating mode is a rated heating mode, and thus the air conditioner is operated in the rated heating mode.
Because the frosting of the outdoor unit of the air conditioner is caused by that the low pressure is too low, but the pressure parameter air conditioning system cannot detect, the temperature T of the outdoor coil pipe can be detected Outer plate Whether the anti-frosting mode needs to be executed or not is judged, namely the controller obtains the temperature T of the outdoor coil pipe in real time through a temperature sensor arranged at the outdoor coil pipe Outer plate And according to T Outer plate The air conditioner is controlled to run in a frosting prevention mode, so that the frosting of the outer unit is avoided, the inner unit stops when the frosting and defrosting of the outer unit are avoided, the indoor environment temperature is reduced, and the user experience degree is lowered.
In addition, when T is detected Outer plate When the first temperature threshold is reached, T is counted Outer plate In the first time when the temperature is reduced from the first temperature threshold to the second temperature threshold, in practical application, the first temperature threshold and the second temperature threshold can be set according to practical conditions, and only the first temperature threshold is required to be larger than the second temperature threshold, because the frosting critical point of the outdoor side coil temperature is 0 ℃ in the continuous operation process of the air conditioner, when the frosting critical point is lower than 0 ℃, the frosting risk is large, preferably, the first temperature threshold is 2 ℃, the second temperature threshold is 0 ℃, and when the temperature is T, the frosting risk is large Outer plate When reaching 2 ℃, T is detected Outer plate First time from 2 ℃ to 0 ℃.
Step S104, judging whether the first time is greater than a preset first time threshold value;
for the above T Outer plate Determining whether the first time is greater than a preset first time threshold value, preferably, the first time threshold value is 5min, if so, determining that the air conditioner is in a rated heating mode, instead of the low-temperature heating mode and the ultra-low-temperature heating mode, thereby passing through T Outer plate A first time from the first temperature threshold to the second temperature threshold and a preset first time threshold, i.e. according to T Outer plate The cooling efficiency of the air conditioner is determined, and the air conditioner is in which heating mode to avoid the air conditioner in the low-temperature heating mode and the ultra-low heating modeThe Wen Zhi heat mode misoperation improves the control precision of the air conditioner in frost prevention during rated heating operation.
Step S106, if yes, when T is reached Outer plate When the temperature is not greater than the third temperature threshold value, controlling the air conditioner to enter a frost prevention mode;
if the first time is greater than the preset first time threshold value, T is carried out at the moment Outer plate Continuously decrease, and judge T Outer plate If not greater than the third temperature threshold, preferably-1 deg.C, and if not, T Outer plate At > -1 deg.C, heating operation is continued, if T Outer plate When the temperature is lower than or equal to minus 1 ℃, the air conditioner is controlled to enter a frost prevention mode, so that the frosting of the external unit caused by the problems of small filling amount, liquid leakage, much dust of the external unit and the like due to the abnormity of the external unit is avoided, and the control precision of the frost prevention is improved. The anti-frosting mode comprises a first stage and a second stage which are sequentially arranged, namely the air conditioner is controlled to enter the first stage of the anti-frosting mode at the moment.
Step S108, controlling the air conditioner to operate according to a first control mode corresponding to the first stage, and judging T Outer plate Whether or not an anti-frosting exit condition is satisfied;
specifically, the process of controlling the air conditioner to operate according to the first control mode corresponding to the first stage includes: controlling the compressor to operate at a reduced frequency according to a first control parameter, and controlling the outdoor fan to operate at an increased speed according to a second control parameter; preferably, the first control parameter is 4Hz and the second control parameter is 100r/min.
Furthermore, T is judged Outer plate Whether the condition of preventing frosting from exiting is met is concretely as follows: judgment of T Outer plate Whether the temperature is not less than the second temperature threshold value and whether the duration reaches a third time threshold value; if both are true, T is determined Outer plate Meeting the anti-frosting exit condition. Namely, in the process that the air conditioner operates according to the first control mode, T at the moment is obtained in real time Outer plate And determining T Outer plate If 0 ℃ is reached, if it is reached and the duration reaches a third time threshold, preferably 3min, if both are true, then T is determined Outer plate Meets the condition of frost-proof quit, at this momentControlling the air conditioner to exit the anti-frosting mode and operate according to the rated heating mode; on the contrary, if T Outer plate If the temperature does not reach 0 ℃ or reaches 0 ℃ but the duration is less than 3min, determining that T is Outer plate The frost-proof exit condition is not satisfied.
And step S110, if not, when the running time of the first control mode reaches a second time threshold, controlling the air conditioner to switch from the first stage to the second stage, and running according to a second control mode corresponding to the second stage until the anti-frosting mode is exited.
When T is Outer plate When the frost-prevention exit condition is not met, judging whether the running time of the first control mode reaches a second time threshold value or not, preferably, the second time threshold value is 7min, and when the running time of the first control mode reaches 7min, namely when the controller runs for 7min according to the first control mode, T Outer plate And if the frost-prevention exit condition is not met, controlling the air conditioner to switch from the first stage to the second stage.
At the moment, controlling the air conditioner to operate according to a second control mode corresponding to the second stage; specifically, the method comprises the following steps: controlling the compressor to operate at a reduced frequency according to a third control parameter; wherein the third control parameter is 2Hz. And, determining T in the second control mode operation Outer plate Whether or not an anti-frosting exit condition is satisfied; if T is Outer plate If the condition of the anti-frosting exit is met, controlling the air conditioner to exit the anti-frosting mode and operating according to the rated heating mode; if not, the second control mode is circulated according to a preset fourth time threshold value until the frosting prevention mode is exited. Preferably, the fourth time threshold is 5min, e.g. within 5min, if T Outer plate If the condition for quitting the frosting prevention is met, the air conditioner is controlled to quit the frosting prevention mode, and if T is met Outer plate And if the condition for preventing frosting from exiting is not met, the second control mode is circulated for 5min until the frosting prevention mode exits, so that the frosting of an outer machine of the air conditioner is avoided, and the problem of poor user experience caused by the fact that the inner machine stops when the outer machine is frosted and defrosted is further avoided.
The embodiment of the invention provides an anti-frosting control method, which can effectively improve the frosting of an air conditioner through an anti-frosting modeThe problem of frost is solved, so that the stop of an internal machine during defrosting is avoided, the experience degree of a user is improved, and the complaint rate is reduced; furthermore, by T Outer plate The first time and the preset first time threshold for reducing the first temperature threshold to the second temperature threshold can also avoid the misoperation of the air conditioner in the low-temperature heating mode and the ultra-low-temperature heating mode, and the control precision of the air conditioner in frosting prevention during rated heating operation is improved.
This is illustrated here for ease of understanding. Wherein the first temperature threshold is 2 ℃, the second temperature threshold is 0 ℃, the third temperature threshold is-1 ℃, and the first time threshold is 5min; the second time threshold is 7min, the third time threshold is 3min, and the fourth time threshold is 5min, as shown in fig. 2, the method includes the following steps:
step S202, the air conditioner is normally heated and operated; namely, the air conditioner is started to perform heating operation, the temperature of the outdoor side coil pipe is continuously reduced, and the temperature T of the outdoor side coil pipe is obtained in real time through the temperature sensor arranged at the outdoor side coil pipe Outer plate ；
Step S204, judging T Outer plate Whether the temperature reaches 2 ℃, if not, executing step S206, and if so, executing step S208;
step S206, maintaining normal heating operation;
step S208, judging that T1 is more than 5min; namely, determine T Outer plate Whether the first time T1 for reducing from 2 ℃ to 0 ℃ is more than 5min, if yes, executing the step S210, and if no, executing the step S206; it should be noted that, in this case, the heating operation is the low-temperature heating operation mode and/or the ultra-low-temperature heating operation mode, which may be specifically determined according to actual conditions (such as T) Outer plate Actual cooling efficiency) is determined, and is not the nominal heating mode; thereby passing through T Outer plate A first time from the first temperature threshold to the second temperature threshold and a preset first time threshold, i.e. according to T Outer plate The air conditioner is determined to be in which heating mode, so that the misoperation of the air conditioner in the low-temperature heating mode and the ultralow-temperature heating mode is avoided, and the control precision of frost prevention of the air conditioner in the rated heating operation is improved.
Step S210, judging T Outer plate At the temperature of less than or equal to-1 ℃, judging T Outer plate If the temperature is not greater than the third temperature threshold, if so, controlling the air conditioner to enter an anti-frosting mode, executing step S212, otherwise, T Outer plate > -1 deg.C, go to step S206; it should be noted that, at this time, the heating operation is an additional customized heating mode;
s212, controlling the compressor to operate at a reduced frequency of 4Hz, and controlling the outdoor fan to operate at an increased speed of 100 r/min; controlling the air conditioner to operate according to a first control mode corresponding to the first stage, wherein a second time threshold corresponding to the first control mode is 7min, namely, continuously monitoring for 7min;
step S214, judging T Outer plate The temperature is more than or equal to 0 ℃, and the duration is more than 3min; namely within 7min, judging T Outer plate Whether or not an anti-frosting exit condition is satisfied; if yes, go to step S206; otherwise, go to step S216;
step S216, controlling the compressor to operate according to 2Hz reduced frequency; i.e. T when the controller is operating in the first control mode for 7min Outer plate If the frost-prevention exit condition is not met, controlling the air conditioner to switch from the first stage to the second stage, and at the moment, controlling the air conditioner to operate according to a second control mode corresponding to the second stage and continuously monitoring for 5min;
step S218, judging T Outer plate The temperature is more than or equal to 0 ℃, and the duration is more than 3min; namely within 5min, judging T Outer plate Whether or not an anti-frosting exit condition is satisfied; if yes, go to step S206; otherwise, returning to execute the step S216, and circulating the second control mode according to 5min until the anti-frosting mode is exited; thereby ensuring T Outer plate The temperature is maintained above 0 ℃, so that the frosting possibility of the outdoor unit is further reduced, and the frosting of the outdoor unit is avoided.
In summary, the control method for preventing frosting provided by the embodiment of the invention not only relieves frosting of the external unit when the air conditioner operates in rated heating, thereby avoiding stopping of the internal unit, but also reduces after-sale complaints, improves the use comfort of users and does not increase configuration cost and after-sale maintenance; in addition, rated heating can be identified, misoperation of the air conditioner in a low-temperature heating mode and an ultra-low-temperature heating mode is avoided, and control precision of frosting prevention of the air conditioner in rated heating operation is improved.
Corresponding to the above method embodiment, an embodiment of the present invention further provides an anti-frosting control apparatus applied to a controller of an air conditioner, as shown in fig. 3, the apparatus includes: an acquisition module 31, a judgment module 32, an entry control module 33, an operation control module 34 and a switching control module 35; the functions of each module are as follows:
an obtaining module 31, configured to obtain the temperature T of the outdoor coil of the air conditioner in real time when it is monitored that the air conditioner is in heating operation Outer plate And T Outer plate A first time from a first temperature threshold to a second temperature threshold;
a determining module 32, configured to determine whether the first time is greater than a preset first time threshold;
entering a control module 33 for if yes, when T is Outer plate When the temperature is not greater than the third temperature threshold value, controlling the air conditioner to enter a frost prevention mode; the anti-frosting mode comprises a first stage and a second stage which are sequentially arranged;
an operation control module 34 for controlling the air conditioner to operate according to a first control mode corresponding to the first stage and determining T Outer plate Whether or not an anti-frosting exit condition is satisfied;
and the switching control module 35 is configured to, if not, control the air conditioner to switch from the first stage to the second stage when the operation duration of the first control mode reaches the second time threshold, and operate according to a second control mode corresponding to the second stage until the air conditioner exits from the anti-frosting mode.
The embodiment of the invention provides a frosting prevention control device, which can effectively improve the frosting problem of an air conditioner through a frosting prevention mode, thereby avoiding the stop of an internal machine during defrosting, improving the experience degree of a user and reducing the complaint rate; furthermore, by T Outer plate The first time and the preset first time threshold for reducing the first temperature threshold to the second temperature threshold can also avoid the misoperation of the air conditioner in the low-temperature heating mode and the ultra-low-temperature heating mode, and improve the frosting prevention of the air conditioner in the rated heating operationThe control accuracy of (2).
In one possible embodiment, the above-mentioned determination T Outer plate Whether an anti-frosting exit condition is met includes: judgment of T Outer plate Whether the temperature is not less than the second temperature threshold value and whether the duration reaches a third time threshold value; if both are true, T is determined Outer plate Meeting the anti-frosting exit condition.
In another possible embodiment, the air conditioner further includes a compressor and an outdoor fan, and the controlling the air conditioner to operate according to a first control mode corresponding to the first stage includes: controlling the compressor to operate at a reduced frequency according to a first control parameter, and controlling the outdoor fan to operate at an increased speed according to a second control parameter; wherein the first control parameter is 4Hz, and the second control parameter is 100r/min.
In another possible embodiment, the above-mentioned operation according to the second control mode corresponding to the second stage includes: controlling the compressor to operate at a reduced frequency according to a third control parameter; wherein the third control parameter is 2Hz.
In another possible implementation, the operating according to the second control mode corresponding to the second phase further includes: judging T in the second control mode operation Outer plate Whether or not an anti-frosting exit condition is satisfied; if not, the second control mode is circulated according to a preset fourth time threshold value until the frosting prevention mode is exited.
In another possible embodiment, the apparatus further comprises: if T is Outer plate And meeting the condition of exiting the frosting prevention, and controlling the air conditioner to exit the frosting prevention mode.
In another possible embodiment, the first temperature threshold is 2 ℃, the second temperature threshold is 0 ℃ and the third temperature threshold is-1 ℃.
The frost prevention control device provided by the embodiment of the invention has the same technical characteristics as the frost prevention control method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides an air conditioner, which comprises a processor and a memory, wherein the memory stores machine executable instructions capable of being executed by the processor, and the processor executes the machine executable instructions to realize the anti-frosting control method.
Referring to fig. 4, the air conditioner includes a processor 40 and a memory 41, the memory 41 stores machine executable instructions capable of being executed by the processor 40, and the processor 40 executes the machine executable instructions to implement the above-mentioned anti-frosting control method.
Further, the air conditioner shown in fig. 4 further includes a bus 42 and a communication interface 43, and the processor 40, the communication interface 43 and the memory 41 are connected through the bus 42.
The Memory 41 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 43 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like may be used. The bus 42 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, an EISA (Enhanced Industry Standard Architecture) bus, or the like. The above-mentioned bus may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but this does not indicate only one bus or one type of bus.
The processor 40 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 40. The Processor 40 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 41, and the processor 40 reads the information in the memory 41 and completes the steps of the method of the foregoing embodiment in combination with the hardware thereof.
The present embodiments also provide a machine-readable storage medium having stored thereon machine-executable instructions that, when invoked and executed by a processor, cause the processor to implement the above-described anti-frosting control method.
The anti-frosting control method and device and the computer program product of the air conditioner provided by the embodiment of the invention comprise a computer readable storage medium storing program codes, wherein instructions included in the program codes can be used for executing the method described in the previous method embodiment, and specific implementation can refer to the method embodiment, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control method for preventing frosting is characterized in that the method is applied to a controller of an air conditioner, and comprises the following steps:
when the heating operation of the air conditioner is monitored, the temperature T of an outdoor side coil of the air conditioner is acquired in real time Outer plate And said T Outer plate A first time from a first temperature threshold to a second temperature threshold;
judging whether the first time is greater than a preset first time threshold value or not;
if so, when the T is Outer plate When the temperature is not greater than the third temperature threshold, controlling the air conditioner to enter a frost prevention mode; the frosting prevention mode comprises a first stage and a second stage which are sequentially arranged;
controlling the air conditioner to operate according to a first control mode corresponding to the first stage, and judging the T Outer plate Whether or not an anti-frosting exit condition is satisfied;
if not, when the running time of the first control mode reaches a second time threshold, controlling the air conditioner to be switched from the first stage to the second stage, and running according to a second control mode corresponding to the second stage until the air conditioner exits from the anti-frosting mode.
2. The method of claim 1, wherein said determining said T Outer plate A step of determining whether or not a frost prevention exit condition is satisfied, including:
judging the T Outer plate Whether the second temperature threshold value is not less than the second temperature threshold value and whether the duration reaches a third timeA threshold value;
if both are true, determining the T Outer plate And the frost formation prevention exit condition is met.
3. The method as claimed in claim 1, wherein the air conditioner further includes a compressor and an outdoor fan, and the step of controlling the air conditioner to operate in a first control mode corresponding to the first stage includes:
controlling the compressor to operate at a reduced frequency according to a first control parameter, and controlling the outdoor fan to operate at an increased speed according to a second control parameter; wherein the first control parameter is 4Hz, and the second control parameter is 100r/min.
4. A method according to claim 3, wherein said step of operating in a second control mode corresponding to said second phase comprises:
controlling the compressor to operate at a reduced frequency according to a third control parameter; wherein the third control parameter is 2Hz.
5. The method of claim 4, wherein the step of operating in a second control mode corresponding to the second phase further comprises:
judging the T in the second control mode operation Outer plate Whether the anti-frosting exit condition is met;
if not, the second control mode is circulated according to a preset fourth time threshold value until the anti-frosting mode is exited.
6. The method of claim 5, further comprising:
if said T is Outer plate And when the condition of the frost formation prevention exit is met, controlling the air conditioner to exit the frost formation prevention mode.
7. The method of claim 1, wherein the first temperature threshold is 2 ℃, the second temperature threshold is 0 ℃, and the third temperature threshold is-1 ℃.
8. A control apparatus for preventing frosting, applied to a controller of an air conditioner, the apparatus comprising:
an acquisition module, configured to acquire the temperature T of the outdoor coil of the air conditioner in real time when it is monitored that the air conditioner is in heating operation Outer plate And said T Outer plate A first time from a first temperature threshold to a second temperature threshold;
the judging module is used for judging whether the first time is greater than a preset first time threshold value or not;
an entry control module for, if yes, when T is said Outer plate When the temperature is not greater than the third temperature threshold, controlling the air conditioner to enter a frost prevention mode; the frosting prevention mode comprises a first stage and a second stage which are sequentially arranged;
an operation control module for controlling the air conditioner to operate according to a first control mode corresponding to the first stage and judging the T Outer plate Whether or not an anti-frosting exit condition is satisfied;
and if not, when the running time of the first control mode reaches a second time threshold, the switching control module is used for controlling the air conditioner to be switched from the first stage to the second stage and run according to a second control mode corresponding to the second stage until the air conditioner exits from the anti-frosting mode.
9. An air conditioner comprising a memory, a processor and a computer program stored on said memory and executable on said processor, wherein said processor when executing said computer program performs the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, performs the steps of the method of any of the preceding claims 1-7.
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