CN110848886B - Air conditioner, defrosting method thereof and computer readable storage medium - Google Patents
Air conditioner, defrosting method thereof and computer readable storage medium Download PDFInfo
- Publication number
- CN110848886B CN110848886B CN201911212307.7A CN201911212307A CN110848886B CN 110848886 B CN110848886 B CN 110848886B CN 201911212307 A CN201911212307 A CN 201911212307A CN 110848886 B CN110848886 B CN 110848886B
- Authority
- CN
- China
- Prior art keywords
- current
- air conditioner
- defrosting
- preset
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses an air conditioner, a defrosting method thereof and a computer readable storage medium, wherein the defrosting method of the air conditioner comprises the following steps: collecting effective currents of an external fan of the air conditioner at a plurality of moments after the air conditioner runs for a preset time in a heating mode; judging whether the condition for defrosting a condenser in the air conditioner is met or not according to the effective currents; and if the condition for defrosting the condenser in the air conditioner is met, defrosting the condenser in the air conditioner. According to the invention, the external fan is frosted more at effective current representation at multiple moments, and defrosting is started when the defrosting condition is achieved, so that the outlet temperature of the condenser is avoided being used as the defrosting starting condition, accurate defrosting starting is facilitated, and the defrosting effect is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a defrosting method of the air conditioner and a computer readable storage medium.
Background
With the improvement of living standard of people, the air conditioner becomes a standard distributor in a household. In the heating operation process of the air conditioner, frost is easily formed on a condenser in an outdoor unit under the outdoor low-temperature and high-humidity environment, and the heating effect is greatly reduced along with the increase of the frost formation amount. Therefore, in order to secure the heating effect of the air conditioner, it is necessary to perform a defrosting operation when the frost is formed to a certain extent.
At present, the outlet temperature of a condenser is often used as a condition for defrosting an outdoor unit during starting, but the outlet temperature of the condenser is influenced by factors such as frequency, an inner fan, an outer fan, inner environment temperature and outer environment temperature, so that the condition for starting defrosting is inaccurate, existing defrosting is not changed, the problem of defrosting is solved, and the defrosting effect is poor.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a defrosting method thereof and a computer readable storage medium, and aims to solve the problems that the starting defrosting condition of the air conditioner is inaccurate and the defrosting effect is poor in the prior art.
In order to achieve the above object, the present invention provides a defrosting method of an air conditioner, which comprises the following steps:
collecting effective currents of an external fan of the air conditioner at a plurality of moments after the air conditioner runs for a preset time in a heating mode;
judging whether the condition for defrosting a condenser in the air conditioner is met or not according to the effective currents;
and if the condition for defrosting the condenser in the air conditioner is met, defrosting the condenser in the air conditioner.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to each effective current includes:
determining the current slope of the outer fan according to each effective current;
and judging whether the condition of defrosting the condenser in the air conditioner is met or not according to the current slope and a preset slope threshold.
In an embodiment, each of the effective currents includes a first-time current, a second-time current, and a third-time current having a time-sequence relationship, and the step of determining the current slope of the outer fan according to each of the effective currents includes:
performing difference operation between the first moment current and the second moment current to generate a first difference result;
performing difference operation between the current at the second moment and the current at the third moment to generate a second difference result;
and generating the current slope of the outer fan according to the first difference result and the second difference result.
In an embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is met according to the current slope and a preset slope threshold includes:
judging whether the current slope is greater than the preset slope threshold, and if so, executing a step of collecting effective currents of an outer fan of the air conditioner at multiple moments;
if the current slope is not greater than the preset slope threshold, executing a step of collecting effective currents of an outer fan of the air conditioner at a plurality of moments, and counting the continuous times that the current slope generated based on the collected effective currents is not greater than the preset slope threshold continuously;
and judging whether the condition for defrosting the condenser in the air conditioner is met or not according to the continuous times.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the continuous times includes:
judging whether the continuous times reach a preset time threshold value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current does not reach the preset frequency threshold value, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the continuous times includes:
judging whether the continuous times reach a preset time threshold value or not and whether the first outlet temperature of a condenser in the air conditioner is in a descending trend or not;
if the continuous times reach the preset times threshold value and the first outlet temperature is in a descending trend, judging that the condition for defrosting the condenser in the air conditioner is reached;
and if the continuous times do not reach the preset times threshold value or the first outlet temperature does not trend downwards, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of collecting the effective current of the external fan of the air conditioner at a plurality of times comprises:
calling a preset time interval, and calculating the current average value of the outer fan in the preset time interval by taking the current time point as the starting time of the preset time interval;
and taking the end time of the preset time interval as the acquisition start time, and acquiring the effective current of the outer fan at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to each effective current includes:
according to the sequence relation of the corresponding moments of the effective currents, taking the effective currents as the current effective currents one by one, and executing the following steps:
performing difference operation between the current average value and the current effective current to generate a current difference value;
judging whether the current difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value;
if the current difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value, counting the current difference value to generate a count value, and judging whether a defrosting condition of a condenser in the air conditioner is met or not according to the count value;
and if the current difference value is smaller than a preset current difference value or larger than a preset current maximum difference value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
judging whether the count value reaches a preset value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current time does not reach the preset value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
judging whether the count value reaches a preset value or not and whether the temperature of a second outlet of a condenser in the air conditioner is in a descending trend or not;
if the count value reaches a preset value and the second outlet temperature is in a descending trend, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the count value does not reach the preset value or the second outlet temperature does not trend downwards, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a defrosting program of the air conditioner stored in the memory and operable on the processor, wherein the defrosting program of the air conditioner, when executed by the processor, implements the defrosting method of the air conditioner as described above.
To achieve the above object, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a defrosting program of an air conditioner, and the defrosting program of the air conditioner, when executed by a processor, implements the defrosting method of the air conditioner as described above.
According to the air conditioner, the defrosting method and the computer readable storage medium provided by the invention, when the air conditioner runs in a heating mode for a preset time, the current of an external fan in the air conditioner is stabilized, the current is taken as a starting point, the effective current of the external fan at a plurality of subsequent moments is collected, whether the condition of defrosting a condenser in the air conditioner is met or not is judged according to each effective current, and if yes, the condenser in the air conditioner is defrosted. As the frost quantity in the outdoor unit of the air conditioner is increased, the wind resistance is correspondingly increased, the air quantity of the outdoor fan is reduced, and the current of the outdoor fan is continuously reduced; therefore, the frosting condition of the outer fan can be reflected through the collected effective current of the outer fan at multiple moments, the effective current at multiple moments represents that the outer fan is frosted more, the defrosting is started when the defrosting condition is achieved, the condition that the outlet temperature of the condenser is used as the starting defrosting condition is avoided, the accurate starting defrosting is facilitated, and the defrosting effect is improved.
Drawings
FIG. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a defrosting method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a defrosting method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a defrosting method of an air conditioner according to a fifth embodiment of the present invention;
fig. 5 is a flow chart illustrating a defrosting method of an air conditioner according to a seventh embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the method comprises the steps that after the air conditioner runs in a heating mode for a preset time length to enable the current of an external fan in the air conditioner to be stable, the current time is taken as a starting point, the effective current of the external fan at a plurality of subsequent moments is collected, whether the condition of defrosting a condenser in the air conditioner is met or not is judged according to each effective current, and if yes, the condenser in the air conditioner is defrosted. As the frost quantity in the outdoor unit of the air conditioner is increased, the wind resistance is correspondingly increased, the air quantity of the outdoor fan is reduced, and the current of the outdoor fan is continuously reduced; therefore, the frosting condition of the outer fan can be reflected through the collected effective current of the outer fan at multiple moments, the effective current at multiple moments represents that the outer fan is frosted more, the defrosting is started when the defrosting condition is achieved, the condition that the outlet temperature of the condenser is used as the starting defrosting condition is avoided, the accurate starting defrosting is facilitated, and the defrosting effect is improved.
As one implementation, the air conditioner may be as shown in fig. 1.
The embodiment of the invention relates to an air conditioner, which comprises: a processor 101, such as a CPU, a memory 102 and a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a memory 103, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a defrosting program of an air conditioner; and the processor 101 may be configured to call a defrosting program of the air conditioner stored in the memory 102, and perform the following operations:
collecting effective currents of an external fan of the air conditioner at a plurality of moments after the air conditioner runs for a preset time in a heating mode;
judging whether the condition for defrosting a condenser in the air conditioner is met or not according to the effective currents;
and if the condition for defrosting the condenser in the air conditioner is met, defrosting the condenser in the air conditioner.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to each effective current includes:
determining the current slope of the outer fan according to each effective current;
and judging whether the condition of defrosting the condenser in the air conditioner is met or not according to the current slope and a preset slope threshold.
In an embodiment, each of the effective currents includes a first-time current, a second-time current, and a third-time current having a time-sequence relationship, and the step of determining the current slope of the outer fan according to each of the effective currents includes:
performing difference operation between the first moment current and the second moment current to generate a first difference result;
performing difference operation between the current at the second moment and the current at the third moment to generate a second difference result;
and generating the current slope of the outer fan according to the first difference result and the second difference result.
In an embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is met according to the current slope and a preset slope threshold includes:
judging whether the current slope is greater than the preset slope threshold, and if so, executing a step of collecting effective currents of an outer fan of the air conditioner at multiple moments;
if the current slope is not greater than the preset slope threshold, executing a step of collecting effective currents of an outer fan of the air conditioner at a plurality of moments, and counting the continuous times that the current slope generated based on the collected effective currents is not greater than the preset slope threshold continuously;
and judging whether the condition for defrosting the condenser in the air conditioner is met or not according to the continuous times.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the continuous times includes:
judging whether the continuous times reach a preset time threshold value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current does not reach the preset frequency threshold value, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the continuous times includes:
judging whether the continuous times reach a preset time threshold value or not and whether the first outlet temperature of a condenser in the air conditioner is in a descending trend or not;
if the continuous times reach the preset times threshold value and the first outlet temperature is in a descending trend, judging that the condition for defrosting the condenser in the air conditioner is reached;
and if the continuous times do not reach the preset times threshold value or the first outlet temperature does not trend downwards, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of collecting the effective current of the external fan of the air conditioner at a plurality of times comprises:
calling a preset time interval, and calculating the current average value of the outer fan in the preset time interval by taking the current time point as the starting time of the preset time interval;
and taking the end time of the preset time interval as the acquisition start time, and acquiring the effective current of the outer fan at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to each effective current includes:
according to the sequence relation of the corresponding moments of the effective currents, taking the effective currents as the current effective currents one by one, and executing the following steps:
performing difference operation between the current average value and the current effective current to generate a current difference value;
judging whether the current difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value;
if the current difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value, counting the current difference value to generate a count value, and judging whether a defrosting condition of a condenser in the air conditioner is met or not according to the count value;
and if the current difference value is smaller than a preset current difference value or larger than a preset current maximum difference value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
judging whether the count value reaches a preset value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current time does not reach the preset value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In one embodiment, the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
judging whether the count value reaches a preset value or not and whether the temperature of a second outlet of a condenser in the air conditioner is in a descending trend or not;
if the count value reaches a preset value and the second outlet temperature is in a descending trend, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the count value does not reach the preset value or the second outlet temperature does not trend downwards, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
According to the scheme, when the air conditioner runs in the heating mode for a preset time, and the current of the external fan in the air conditioner is stable, the current is taken as the starting point, the effective current of the external fan at a plurality of subsequent moments is collected, whether the condition for defrosting the condenser in the air conditioner is met or not is judged according to each effective current, and if yes, the condenser in the air conditioner is defrosted. As the frost quantity in the outdoor unit of the air conditioner is increased, the wind resistance is correspondingly increased, the air quantity of the outdoor fan is reduced, and the current of the outdoor fan is continuously reduced; therefore, the frosting condition of the outer fan can be reflected through the collected effective current of the outer fan at multiple moments, the effective current at multiple moments represents that the outer fan is frosted more, the defrosting is started when the defrosting condition is achieved, the condition that the outlet temperature of the condenser is used as the starting defrosting condition is avoided, the accurate starting defrosting is facilitated, and the defrosting effect is improved.
Based on the hardware architecture of the air conditioner, the embodiment of the defrosting method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a defrosting method of an air conditioner according to the present invention, the defrosting method of an air conditioner includes the steps of:
step S10, collecting effective current of an external fan of the air conditioner at a plurality of moments after the air conditioner runs in a heating mode for a preset time;
the defrosting method of the air conditioner is applied to the control center of the air conditioner, and is suitable for the control center of the air conditioner to control the start of defrosting operation of the condenser in the air conditioner according to the current change of the outer fan under the heating mode, so that the condenser is prevented from frosting continuously and the heating effect is prevented from being influenced. Specifically, the air conditioner includes a heating mode in which low-temperature and high-humidity outdoor air is easily condensed on a condenser of the outdoor unit, and a frosting phenomenon occurs. In order to judge whether the frosting occurs, the control center firstly detects the current operation mode of the air conditioner and judges whether the air conditioner operates in the heating mode at present. In addition, the external fan of the air conditioner is considered to be started to be shut down under some special conditions, such as the condition that the indoor temperature is high and the air conditioner runs in an overload mode. Therefore, after the air conditioner is detected to be operated in the heating mode currently, the control center continuously judges whether the external fan of the air conditioner is in the opening state. And if the fan is in the starting state, waiting for a preset time length, wherein the preset time length is a time length preset according to requirements, so as to ensure that the current of the outer fan is in a stable state.
Further, after the air conditioner runs in a heating mode for a preset time and the current of the outer fan is stable, collecting effective currents of the outer fan at a plurality of subsequent moments, wherein the effective currents are currents of the outer fan during normal operation; determining the current change condition of the outer fan through the effective current at a plurality of subsequent moments; and further determining whether defrosting of the condenser needs to be started or not according to the change situation of the current.
Step S20, judging whether the condition for defrosting the condenser in the air conditioner is achieved according to each effective current;
furthermore, after the effective currents of the external fan of the air conditioner at multiple moments are collected, the effective currents at the multiple moments can be generated into slopes representing the change of the current at the multiple moments, and the continuous change of the current of the external fan is judged through the slopes in continuous time. In addition, reference current representing that the external fan is not frosted can be obtained, and the continuous change of the current of the external fan is represented through difference operation between the effective current and the reference current at multiple moments.
Understandably, the rotational speed of the external fan for mounting direct current has a constant characteristic. Along with the increase of frost formation on a condenser in the outdoor unit, the wind resistance is increased, and the air output is reduced; therefore, the working power of the outer fan is reduced, and the current of the outer fan is reduced. Therefore, in the present embodiment, it is determined whether a condition for defrosting a condenser in the air conditioner is met, which is substantially to determine whether the current of the external fan is in a downward trend. Whether the outer fan current continuously drops is represented by the slope generated by the effective current at multiple moments or the difference between the effective current and the reference current at multiple moments; if the air resistance continuously decreases, the air resistance continuously increases, the frosting amount continuously increases, and the defrosting of the condenser needs to be started. On the contrary, if the slope or the difference value does not represent that the current of the external fan continuously decreases, the frosting amount is not continuously increased, and the defrosting of the condenser is not needed for a moment.
And step S30, if the condition for defrosting the condenser in the air conditioner is met, defrosting the condenser in the air conditioner.
Further, if it is determined that a condition for defrosting a condenser in the air conditioner is met, that is, the current of the external fan continuously decreases, according to the effective currents of the external fan at a plurality of times after the external fan is stably operated, the condenser in the air conditioner is defrosted. If the condition for defrosting the condenser in the air conditioner is judged not to be met, the condenser is not defrosted, and effective currents of the outer fan at a plurality of subsequent moments are continuously collected for judgment so as to defrost in time when the defrosting condition is met; the influence of frosting on the heating function of the air conditioner is avoided, and the heating effect of the air conditioner in the heating mode is ensured.
In the technical scheme provided by this embodiment, when the air conditioner operates in a heating mode for a preset time, and the current of the external fan in the air conditioner is stable, the current is taken as a starting point, the effective currents of the external fan at a plurality of subsequent moments are collected, whether a condition for defrosting the condenser in the air conditioner is met is judged according to each effective current, and if yes, the condenser in the air conditioner is defrosted. As the frost quantity in the outdoor unit of the air conditioner is increased, the wind resistance is correspondingly increased, the air quantity of the outdoor fan is reduced, and the current of the outdoor fan is continuously reduced; therefore, the frosting condition of the outer fan can be reflected through the collected effective current of the outer fan at multiple moments, the effective current at multiple moments represents that the outer fan is frosted more, the defrosting is started when the defrosting condition is achieved, the condition that the outlet temperature of the condenser is used as the starting defrosting condition is avoided, the accurate starting defrosting is facilitated, and the defrosting effect is improved.
Further, referring to fig. 3, a second embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the first embodiment of the defrosting method of an air conditioner according to the present invention, wherein in the second embodiment, the step of determining whether the condition for defrosting the condenser in the air conditioner is reached according to each of the effective currents includes:
step S21, determining the current slope of the outer fan according to each effective current;
in this embodiment, the current slope of the external fan is determined according to the effective flow of the external fan at multiple times, so as to reflect the change condition of the current of the external fan through the current slope. The time interval point can be set according to actual requirements, for example, the time interval point can be set to be a time point for collection every one minute, and the time interval point can also be set to be a time point for collection every two minutes. The effective currents at the multiple moments at least comprise effective currents at three continuous moments with time sequence relation, and for the situation that the collected time points are taken at intervals of one minute, the collected effective currents at the multiple moments at least comprise the effective current at the current moment, the effective current one minute before the current moment and the effective current two minutes before the current moment.
Further, in order to distinguish the effective currents at a plurality of moments, the effective current with the first collecting time in the three continuous moments is used as the current at the first moment, the effective current with the second collecting time is used as the current at the second moment, and the effective current with the last collecting time at the current moment is used as the current at the third moment. Therefore, each of the collected effective currents at a plurality of moments at least comprises a first moment current, a second moment current and a third moment current which have a time sequence relation; therefore, the current slope is generated through the effective current of at least three continuous moments, and the change of the outer fan current is represented. Specifically, the step of determining the current slope of the outer fan according to each effective current includes:
step S211, performing a difference operation between the first time current and the second time current to generate a first difference result;
step S212, performing difference operation between the second moment current and the third moment current to generate a second difference result;
step S213, generating a current slope of the outer fan according to the first difference result and the second difference result.
Furthermore, in order to determine the current slope of the outer fan, the current at the first moment and the current at the second moment are subjected to difference operation to obtain a first difference result. And simultaneously, performing difference operation on the current at the second moment and the current at the third moment to obtain a second difference result. And then, making a ratio of the first difference result and the second difference result, wherein the ratio result is the current slope of the outer fan, and representing the current change condition of the outer fan at the current moment. The calculation process can be characterized by a preset formula (1), wherein the preset formula (1) is as follows:
Rx＝(I(x-2)-I(x-1))/(I(x-1)-Ix)(1)；
wherein Rx represents the current slope, I (x-2) represents the current at the first moment, I (x-1) represents the current at the second moment, and Ix represents the current at the third moment.
And transmitting the first moment current, the second moment current and the third moment current included in the collected effective current to a preset formula (1), so as to obtain the current slope of the outer fan.
And step S22, judging whether the condition for defrosting the condenser in the air conditioner is achieved according to the current slope and a preset slope threshold.
Further, in order to represent the magnitude of the current slope, a preset slope threshold value is preset. The preset slope threshold is set through experimental tests, the frosting condition is represented seriously, the heating effect of the air conditioner is influenced, and the slope value of defrosting needs to be started. And calling the preset slope threshold after the actual current slope is obtained through calculation, and judging whether the condition of defrosting the condenser is met or not according to the magnitude relation between the actual current slope and the preset slope threshold. Specifically, the step of judging whether the condition for defrosting the condenser in the air conditioner is reached according to the current slope and the preset slope threshold comprises the following steps:
step S221, judging whether the current slope is greater than the preset slope threshold, and if so, executing a step of collecting effective currents of an external fan of the air conditioner at multiple moments;
step S222, if the current slope is not greater than the preset slope threshold, performing a step of collecting effective currents of an external fan of the air conditioner at multiple moments, and counting the continuous times that the current slope generated based on the collected effective currents is not greater than the preset slope threshold continuously;
and step S223, judging whether the condition for defrosting the condenser in the air conditioner is achieved or not according to the continuous times.
And comparing the current slope with a preset slope threshold value, and judging whether the current slope is greater than the preset slope threshold value. If the current change of the current outer fan is larger than the preset slope threshold, the current change of the current outer fan does not meet the defrosting condition, the current time is taken as a starting point, the effective current at a plurality of subsequent moments is continuously collected, and a new current slope is generated. And comparing the newly generated current slope with a preset slope threshold value, and judging whether the newly generated current slope is greater than the preset slope threshold value. And if not, continuously collecting until the current slope is greater than a preset current threshold.
Further, if the current threshold is judged to be smaller than or equal to the preset current threshold, it is indicated that the current change of the current outer fan meets the defrosting condition. At this time, in order to eliminate accidental factors and ensure that the condition of starting defrosting the condenser is achieved, the current time is taken as a starting point, the effective currents of the outer fan at a plurality of subsequent moments are continuously collected, and a new current slope is generated so as to continuously judge whether the newly generated current slope is greater than a preset current threshold. And counting the continuous times that the current slope is continuously less than or equal to the preset current threshold, wherein the continuous times represent the times that the defrosting condition is met within a continuous period of time, and the influence of accidental factors is eliminated. Therefore, whether the defrosting condition of the condenser in the air conditioner is achieved can be judged according to the number of times of meeting the defrosting condition represented by the continuous times.
The current slope in continuous time periods represents the continuous change condition of the current of the outer fan by generating the effective current at multiple moments into the current slope, and then whether the condition of starting defrosting is achieved is judged. Compared with the condition that the outlet temperature of the condenser is used as the starting defrosting condition, the problem of inaccurate starting caused by the fact that the outlet temperature is influenced by multiple external factors is solved, and accurate starting defrosting is facilitated.
Further, a third embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the second embodiment of the defrosting method of an air conditioner according to the present invention, and in the third embodiment, the step of determining whether or not a condition for defrosting a condenser in the air conditioner is reached according to the number of consecutive times includes:
step a, judging whether the continuous times reach a preset time threshold value, and if the continuous times reach the preset time threshold value, judging that the condition of defrosting a condenser in the air conditioner is reached;
and b, if the preset frequency threshold value is not reached, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In this embodiment, a preset time threshold value representing that the start-up defrosting condition is reached in a continuous time period is preset, the continuous times representing that the defrosting condition is met in a continuous time period are compared with the preset time threshold value, whether the continuous times reach the preset time threshold value or not is judged, and if the continuous times reach the preset time threshold value, it is indicated that the current change condition of the external fan in the continuous time period reaches the start-up defrosting condition. At this time, it is determined that the condition for defrosting the condenser in the air conditioner is reached, and defrosting of the condenser is started.
On the contrary, if the continuous times do not reach the preset times threshold, it is indicated that the current change condition of the external fan in the continuous time period does not reach the condition of starting defrosting, the effective current of the external fan at multiple moments needs to be continuously collected, and the current slope is generated until the continuous times of which the generated current slope is less than or equal to the preset slope threshold reach the preset times threshold, and defrosting of the condenser is started. If the preset time threshold is 3 times, after the current slope is judged to be smaller than the preset current threshold, recording the continuous times as 1, continuously acquiring the effective current to generate the current slope, and judging whether the regenerated current slope is larger than the preset current threshold or not; if so, resetting the continuous times to facilitate subsequent re-recording; and if the continuous times are less than or equal to the preset times threshold value 3, accumulating the continuous times and recording the continuous times as 2, and starting defrosting the condenser until the continuous times reach the preset times threshold value.
According to the defrosting method and the defrosting device, whether the defrosting condition is achieved or not is judged through the preset times threshold, and the condition that the defrosting condition is achieved due to the influence of accidental factors on the current of the outer fan is avoided. And the defrosting of the condenser is started only when the continuous times that the current slope is less than or equal to the preset slope threshold reach the preset time threshold, so that the accuracy of starting the defrosting is further improved.
Further, a fourth embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the second embodiment of the defrosting method of an air conditioner according to the present invention, and in the fourth embodiment, the step of determining whether or not a condition for defrosting a condenser in the air conditioner is reached according to the number of consecutive times includes:
step c, judging whether the continuous times reach a preset time threshold value or not, and whether the first outlet temperature of a condenser in the air conditioner is in a descending trend or not;
d, if the continuous times reach the preset times threshold value and the first outlet temperature is in a descending trend, judging that the condition of defrosting a condenser in the air conditioner is met;
and e, if the continuous times do not reach the preset times threshold value or the first outlet temperature does not trend downwards, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
In this embodiment, in addition to a preset threshold of the number of times for representing that the starting defrosting condition is reached in a continuous period of time, a change trend of the outlet temperature of the condenser is also used as a condition for judging the starting defrosting, and the condition for starting defrosting is judged only when the continuous number of times that the current slope is less than or equal to the preset threshold of the slope reaches the preset threshold of the number of times and the outlet temperature of the condenser is in a descending trend. Specifically, the outlet temperature of the condenser is detected as the first outlet temperature of the condenser, and in order to represent the variation trend of the outlet temperature of the condenser, the current time temperature of the outlet of the condenser and the previous time temperature of the outlet of the condenser are detected, that is, the temperatures corresponding to the current at the third time and the current at the second time are detected as the first outlet temperature. And then subtracting the temperature corresponding to the current at the third moment from the temperature corresponding to the current at the second moment, judging whether the subtraction result is greater than 0, if so, judging that the first outlet temperature is in a descending trend, otherwise, judging that the first outlet temperature is in an ascending trend.
The descending trend judgment can adopt an addition mode besides a subtraction mode, the temperature at the later moment is divided by the temperature at the previous moment, whether the result of the addition is less than 1 or not is judged, and if the result is less than 1, the descending trend is judged; or dividing the temperature of the previous moment by the temperature of the later moment, judging whether the division result is greater than 1, and if the division result is greater than 1, judging that the trend is downward.
Further, if the continuous times are compared and judged to reach the preset time threshold value, and the first outlet temperature of the condenser is in a descending trend within the continuous times, the condition that the frosting amount is more and more represented no matter from the current change condition or the temperature change condition is shown, and the condition that the condenser is defrosted is judged to be reached. And otherwise, if any one of the current change situation and the temperature change situation does not represent that the frosting amount is more and more, namely the continuous times do not reach the preset time threshold value, or the first outlet temperature does not fall for one time in the continuous times, judging that the condition for defrosting the condenser is not reached. And continuing to collect the effective current of the outer fan at a plurality of moments and generating a current slope until the continuous times that the generated current slope is less than or equal to the preset slope threshold reach the preset time threshold, and the first outlet temperature is in a descending trend within the continuous times.
The embodiment judges whether the defrosting condition is achieved or not by combining the preset times threshold value with the variation trend of the first outlet temperature, and avoids the influence of the current of the outer fan due to accidental factors to achieve the defrosting condition. And defrosting the condenser is started only when the continuous times that the current slope is less than or equal to the preset slope threshold reach the preset time threshold and the first outlet temperature is in a descending trend in each continuous time, so that the defrosting starting accuracy is improved.
Further, referring to fig. 4, a fifth embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the first embodiment of the defrosting method of an air conditioner according to the present invention, wherein in the fifth embodiment, the step of collecting the effective currents of the external fan of the air conditioner at a plurality of times after the air conditioner is operated in the heating mode for a preset time period includes:
step S11, calling a preset time interval, and calculating the current average value of the outer fan in the preset time interval by taking the current time point as the starting time of the preset time interval;
and step S12, taking the end time of the preset time interval as the collection start time, and collecting the effective current of the outer fan at a plurality of moments.
In this embodiment, the continuous change of the current of the external air blower is represented by representing the difference between the reference current when the external air blower is not frosted and the effective current at a plurality of moments, so as to determine whether the condition of defrosting the condenser in the external air blower is met. Specifically, in order to obtain the reference current when the external air blower is not frosted, a preset time interval is set in advance according to requirements, such as 5 minutes, 10 minutes, or the like. The method comprises the steps of calling a preset time interval after the air conditioner runs for a preset time length in a heating mode, taking a current time point as the starting time of the preset time interval, collecting current values of an outer fan at all moments in the preset time interval by taking the current time point as the starting time, and carrying out average value processing on all the current values to obtain the current average value of the outer fan in the preset time interval, wherein the current average value is the reference current for representing that the outer fan is not frosted. The number of the collected current values is set according to requirements, if a preset time interval is set to be 5 minutes, the current values are collected every 1 minute, and the current values of the external fan are collected once after the air conditioner operates in a heating mode for a preset time; then, the current values are collected uniformly every 1 minute until 5 minutes of a preset time interval is reached, and 6 current values are collected in total; and carrying out mean value processing on the 6 current values to obtain the current mean value of the outer fan within a preset time interval.
Further, after the current average value in the preset time interval is obtained through calculation, the end time of the preset time interval is used as the collection starting time, and the effective currents of the external fan at multiple moments are collected. And judging whether the condition of defrosting the condenser in the external fan is met or not according to the magnitude relation between the effective current and the average current value collected after the preset time interval is ended. Specifically, in this embodiment, the step of determining whether the condition for defrosting the condenser in the air conditioner is met according to each effective current includes:
step S23, according to the precedence order relationship of the corresponding time of each effective current, taking each effective current as the current effective current one by one, and executing the following steps:
step S24, performing difference operation between the current average value and the current effective current to generate a current difference value;
step S25, judging whether the current difference is larger than or equal to a preset current difference and smaller than a preset current maximum difference;
step S26, if the current difference is larger than or equal to a preset current difference and smaller than a preset current maximum difference, counting the current difference to generate a count value, and judging whether the condition of defrosting a condenser in the air conditioner is met or not according to the count value;
and step S27, if the current difference is smaller than a preset current difference or larger than a preset current maximum difference, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
Furthermore, the collected effective currents are used as the current effective currents to be processed one by one according to the sequence relation of the respective collection time. The one-by-one processing may be to collect the effective current of the external fan after the preset time interval is finished, and to process the current effective current when one effective current is collected, or to process each effective current one by one according to the sequence of the collection time after the effective currents at a plurality of moments are collected. Presetting a preset current difference value representing the difference value between the current average value and the current effective current and a preset current maximum difference value between the current average value and the current effective current, wherein the difference value between the current average value and the current effective current cannot exceed the preset current maximum difference value. And when the current effective current is subtracted from the current average value one by one during processing, generating a current difference value between the current effective current and the current average value, comparing the current difference value with a preset current difference value and a preset current maximum difference value respectively, and judging whether the current difference value is greater than or equal to the preset current difference value and smaller than the preset current maximum difference value.
If the current difference value is between the preset current difference value and the preset maximum current difference value, the current of the current outer fan meets the condition of defrosting a condenser in the air conditioner. At this time, in order to eliminate accidental factors and ensure that the condition for starting defrosting of the condenser is really achieved, the current difference values of the type generated in the continuous times are counted and counted to generate a counting value. The counting value represents the times that the effective current collected in a continuous period of time meets the defrosting condition, and the influence of accidental factors is eliminated. Therefore, whether the defrosting condition of the condenser in the air conditioner is met can be judged according to the number of times of meeting the defrosting condition represented by the counting value.
Otherwise, if the current difference value is not between the preset current difference value and the preset current maximum difference value, that is, the current difference value is judged to be smaller than the preset current difference value or larger than or equal to the preset current maximum difference value, it is indicated that the current of the outer fan does not meet the condition of defrosting the condenser in the air conditioner. And at the moment, taking the current time as the acquisition starting time, continuously acquiring the effective currents of the outer fan at a plurality of moments, processing the effective currents as the current effective currents one by one to generate current difference values until the newly generated current difference values are positioned between the preset current difference values and the maximum preset current difference values, counting the current difference values, generating a counting value, and judging whether the condition of defrosting the condenser in the air conditioner is met or not according to the counting value.
In the embodiment, the current difference value is generated one by one with the effective current at a plurality of continuous moments through the current average value when the external fan is not frosted so as to represent the continuous change condition of the current of the external fan, and further judge whether the condition of defrosting the condenser in the external fan is met. Compared with the condition that the outlet temperature of the condenser is used as the starting defrosting condition, the problem of inaccurate starting caused by the fact that the outlet temperature is influenced by multiple external factors is solved, and accurate starting defrosting is facilitated.
Further, a sixth embodiment of the defrosting method of an air conditioner according to the present invention is provided based on the fifth embodiment of the defrosting method of an air conditioner according to the present invention, and in the sixth embodiment, the step of determining whether or not a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
step 261, judging whether the count value reaches a preset value, and if so, judging that a defrosting condition of a condenser in the air conditioner is reached;
and S262, if the current time does not reach the preset value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
The method includes the steps of presetting a preset value for representing that a defrosting starting condition is achieved in a continuous time period, comparing a counting value for representing that effective current collected in the continuous time period meets the defrosting condition with the preset value, judging whether the counting value reaches the preset value, and if so, indicating that the current change condition of an external fan in the continuous time period reaches the defrosting starting condition. At this time, it is determined that the condition for defrosting the condenser in the air conditioner is reached, and defrosting of the condenser is started.
On the contrary, if the count value does not reach the preset value, it indicates that the current change condition of the external fan in the continuous time interval does not reach the condition of starting defrosting. At the moment, taking the current time as the acquisition starting time, continuously acquiring the effective currents of the outer fan at a plurality of moments, and processing the effective currents as the current effective currents one by one to generate current difference values; and counting the current difference value between the preset current difference value and the preset current maximum difference value generated in the continuous time period, generating a count value until the newly generated count value reaches the preset value, and starting defrosting the condenser. If the preset value is 3 times, after the current difference value is judged to be between the preset current difference value and the preset current maximum difference value, the counting value is recorded as 1, the effective current is continuously collected to generate the current difference value, and whether the regenerated current difference value is between the preset current difference value and the preset current maximum difference value is judged; if not, the count value can be cleared so as to facilitate subsequent re-recording; and if the number of the condenser is within the preset range, accumulating the counting value, recording the counting value as 2, and starting defrosting the condenser until the counting value reaches a preset value 3.
The embodiment judges whether the defrosting condition is achieved or not through the preset value, and avoids the influence of the current of the outer fan due to accidental factors, so that the defrosting condition is achieved. And defrosting the condenser is started only when the generated current difference value is greater than or equal to the preset current difference value and the continuous times smaller than the preset current maximum difference value reach the preset value, so that the defrosting starting accuracy is further improved.
Further, referring to fig. 5, a seventh embodiment of the defrosting method of an air conditioner according to the present invention is proposed based on the fifth embodiment of the defrosting method of an air conditioner according to the present invention, and in the seventh embodiment, the step of determining whether or not a condition for defrosting a condenser in the air conditioner is reached according to the count value includes:
step S263, judging whether the count value reaches a preset value and whether the second outlet temperature of the condenser in the air conditioner is in a descending trend;
step S264, if the count value reaches a preset value and the second outlet temperature is in a downward trend, determining that a defrosting condition for a condenser in the air conditioner is reached;
and step S265, if the count value does not reach the preset value or the second outlet temperature does not trend downwards, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
In this embodiment, besides preset values representing conditions of starting defrosting within a continuous time period, a change trend of the outlet temperature of the condenser is also used as a condition for judging starting defrosting, and the condition for starting defrosting is judged only when the generated current difference is greater than or equal to the preset current difference, and the continuous times smaller than the preset current maximum difference reach the preset values, and the outlet temperature of the condenser is in a descending trend. Specifically, the outlet temperature of the condenser is used as the second outlet temperature of the condenser for detection, in order to represent the variation trend of the outlet temperature, the temperature of the outlet of the condenser at the current moment and the temperature at the previous moment are detected, the temperature at the previous moment is subtracted from the temperature at the current moment, whether the subtraction result is greater than 0 is judged, if so, the second outlet temperature is determined to be in a descending trend, otherwise, the second outlet temperature is determined to be in an ascending trend.
The descending trend judgment can adopt an addition mode besides a subtraction mode, the temperature at the current moment is used for dividing the temperature at the previous moment, whether the result of the addition is less than 1 or not is judged, and if the result is less than 1, the descending trend is judged; or dividing the temperature at the previous moment by the temperature at the current moment, judging whether the division result is greater than 1, and if so, judging that the trend is a descending trend.
Further, if the comparison result shows that the count value reaches the preset value and the second outlet temperature of the condenser is in a descending trend in each counting process, the fact that the frosting amount is more and more represented no matter from the current change condition or the temperature change condition indicates that the defrosting condition of the condenser is achieved. And otherwise, if any one of the current change situation and the temperature change situation does not represent more and more frosting amount, namely the counting value does not reach the preset value, or the second outlet temperature does not fall for a certain time in each counting process, judging that the condition for defrosting the condenser is not reached. At the moment, taking the current time as the acquisition starting time, continuously acquiring the effective currents of the outer fan at a plurality of moments, and processing the effective currents as the current effective currents one by one to generate current difference values; and counting the current difference value between the preset current difference value and the preset current maximum difference value generated in the continuous time interval, generating a count value until the newly generated count value reaches the preset value, and starting defrosting the condenser when the temperature of the second outlet is in a descending trend in each counting process.
The embodiment judges whether the defrosting condition is achieved or not by combining the preset value with the variation trend of the second outlet temperature, and avoids the influence of the current of the outer fan due to accidental factors, so that the defrosting condition is achieved. And defrosting the condenser is started only when the generated current difference value is greater than or equal to the preset current difference value and the continuous times smaller than the preset current maximum difference value reach the preset value and the second outlet temperature is in a descending trend in each continuous time, so that the defrosting starting accuracy is improved.
The invention also provides an air conditioner, which comprises a memory, a processor and a defrosting program of the air conditioner, wherein the defrosting program of the air conditioner is stored in the memory and can run on the processor, and when the defrosting program of the air conditioner is executed by the processor, the defrosting method of the air conditioner is realized.
The present invention also provides a computer-readable storage medium storing a defrosting program of an air conditioner, which when executed by a processor implements the defrosting method of the air conditioner as described in the above embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
Claims (12)
1. A defrosting method of an air conditioner is characterized by comprising the following steps:
after the air conditioner runs for a preset time in a heating mode, acquiring a current average value in a preset time interval, and acquiring effective currents of an external fan of the air conditioner at multiple moments;
judging whether the condition for defrosting a condenser in the air conditioner is met or not according to the effective currents;
wherein the step of judging whether the condition for defrosting the condenser in the air conditioner is reached according to each effective current comprises the following steps:
performing difference operation between the current average value and the current effective current to generate a current difference value;
judging whether the current difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value;
if the difference value is larger than or equal to a preset current difference value and smaller than a preset current maximum difference value, judging that the condition of defrosting a condenser in the air conditioner is achieved;
if the condition for defrosting the condenser in the air conditioner is met, defrosting the condenser in the air conditioner;
after the step of determining that the condition for defrosting the condenser in the air conditioner is reached, the method further comprises the following steps:
and if the current difference value is smaller than a preset current difference value or larger than a preset current maximum difference value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
2. The defrosting method of an air conditioner according to claim 1, wherein the step of judging whether a condition for defrosting a condenser in the air conditioner is reached according to each of the effective currents comprises:
determining the current slope of the outer fan according to each effective current;
and judging whether the condition of defrosting the condenser in the air conditioner is met or not according to the current slope and a preset slope threshold.
3. The defrosting method of an air conditioner according to claim 2, wherein each of the effective currents includes a first time current, a second time current, and a third time current having a time-sequential relationship, and the determining the current slope of the outer fan according to each of the effective currents includes:
performing difference operation between the first moment current and the second moment current to generate a first difference result;
performing difference operation between the current at the second moment and the current at the third moment to generate a second difference result;
and generating the current slope of the outer fan according to the first difference result and the second difference result.
4. The defrosting method of an air conditioner according to claim 2, wherein the step of determining whether a condition for defrosting a condenser in the air conditioner is reached according to the current slope and a preset slope threshold comprises:
judging whether the current slope is greater than the preset slope threshold, and if so, executing a step of collecting effective currents of an outer fan of the air conditioner at multiple moments;
if the current slope is not greater than the preset slope threshold, executing a step of collecting effective currents of an outer fan of the air conditioner at a plurality of moments, and counting the continuous times that the current slope generated based on the collected effective currents is not greater than the preset slope threshold continuously;
and judging whether the condition for defrosting the condenser in the air conditioner is met or not according to the continuous times.
5. The defrosting method of an air conditioner according to claim 4, wherein the step of judging whether a condition for defrosting a condenser in the air conditioner is reached according to the consecutive number of times includes:
judging whether the continuous times reach a preset time threshold value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current does not reach the preset frequency threshold value, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
6. The defrosting method of an air conditioner according to claim 4, wherein the step of judging whether a condition for defrosting a condenser in the air conditioner is reached according to the consecutive number of times includes:
judging whether the continuous times reach a preset time threshold value or not and whether the first outlet temperature of a condenser in the air conditioner is in a descending trend or not;
if the continuous times reach the preset times threshold value and the first outlet temperature is in a descending trend, judging that the condition for defrosting the condenser in the air conditioner is reached;
and if the continuous times do not reach the preset times threshold value or the first outlet temperature does not trend downwards, executing the step of collecting the effective current of the outer fan of the air conditioner at a plurality of moments.
7. The defrosting method of an air conditioner according to claim 1, wherein the step of obtaining the average value of the current in the preset time interval and collecting the effective current of the external fan of the air conditioner at a plurality of times comprises:
calling a preset time interval, and calculating the current average value of the outer fan in the preset time interval by taking the current time point as the starting time of the preset time interval;
and taking the end time of the preset time interval as the acquisition start time, and acquiring the effective current of the outer fan at a plurality of moments.
8. The defrosting method of an air conditioner according to claim 7, wherein the step of generating the current difference by performing the difference operation between the current average value and the present effective current further comprises:
according to the sequence relation of the corresponding moments of the effective currents, taking the effective currents as the current effective currents one by one;
after the step of determining whether the difference is greater than or equal to the preset current difference and less than the preset current maximum difference, the method further comprises:
and counting the current difference value to generate a count value, and judging whether the condition of defrosting a condenser in the air conditioner is met or not according to the count value.
9. The defrosting method of an air conditioner according to claim 8, wherein the determining whether the condition for defrosting the condenser in the air conditioner is reached according to the count value comprises:
judging whether the count value reaches a preset value or not, and if so, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the current time does not reach the preset value, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
10. The defrosting method of an air conditioner according to claim 8, wherein the determining whether the condition for defrosting the condenser in the air conditioner is reached according to the count value comprises:
judging whether the count value reaches a preset value or not and whether the temperature of a second outlet of a condenser in the air conditioner is in a descending trend or not;
if the count value reaches a preset value and the second outlet temperature is in a descending trend, judging that the condition of defrosting a condenser in the air conditioner is reached;
and if the count value does not reach the preset value or the second outlet temperature does not trend downwards, taking the current time as the acquisition starting time, and executing the step of acquiring the effective current of the outer fan of the air conditioner at a plurality of moments.
11. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and a defrosting program of the air conditioner stored in the memory and operable on the processor, wherein the defrosting program of the air conditioner, when executed by the processor, implements the defrosting method of the air conditioner according to any one of claims 1 to 10.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a defrosting program of an air conditioner, which when executed by a processor, implements the defrosting method of the air conditioner according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212307.7A CN110848886B (en) | 2019-11-28 | 2019-11-28 | Air conditioner, defrosting method thereof and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212307.7A CN110848886B (en) | 2019-11-28 | 2019-11-28 | Air conditioner, defrosting method thereof and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110848886A CN110848886A (en) | 2020-02-28 |
| CN110848886B true CN110848886B (en) | 2022-04-15 |
Family
ID=69607096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911212307.7A Active CN110848886B (en) | 2019-11-28 | 2019-11-28 | Air conditioner, defrosting method thereof and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110848886B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336648A (en) * | 2020-03-16 | 2020-06-26 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| CN111397139A (en) * | 2020-04-14 | 2020-07-10 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807132A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| CN108151231A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| JP2018128194A (en) * | 2017-02-08 | 2018-08-16 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner |
| CN108444037A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108488994A (en) * | 2018-02-14 | 2018-09-04 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN109269019A (en) * | 2018-10-10 | 2019-01-25 | 珠海格力电器股份有限公司 | Defrosting control method, device and heating equipment |
| CN109323370A (en) * | 2018-09-30 | 2019-02-12 | 广东美的制冷设备有限公司 | Air-conditioning and its defrosting method and device |
| CN109469963A (en) * | 2018-09-28 | 2019-03-15 | 珠海格力电器股份有限公司 | A kind of defrosting control method and unit |
| CN109827361A (en) * | 2018-12-29 | 2019-05-31 | 西安交通大学 | The reverse cycle defrosting method, apparatus of air-conditioning system and air-conditioning system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186157A (en) * | 1986-02-07 | 1987-08-14 | Mitsubishi Electric Corp | Defrosting control unit of air conditioner |
| CN101660808B (en) * | 2008-08-29 | 2012-01-04 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| CN203869255U (en) * | 2014-01-23 | 2014-10-08 | 珠海格力电器股份有限公司 | Defrosting control device |
| CN107084507A (en) * | 2017-06-05 | 2017-08-22 | 广东美的暖通设备有限公司 | Defrost determination methods, defrost judge system and air-conditioning |
| CN107270479A (en) * | 2017-06-19 | 2017-10-20 | 广东美的暖通设备有限公司 | The control method and control system of outdoor fan of air conditioner |
| CN107401883A (en) * | 2017-07-19 | 2017-11-28 | 深圳市傲天医疗智能系统有限公司 | Refrigerator self checking method and self-checking system |
| JP2019116993A (en) * | 2017-12-27 | 2019-07-18 | 株式会社富士通ゼネラル | Air conditioner |
| CN108444048A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108507120B (en) * | 2018-02-14 | 2020-07-31 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN108613473B (en) * | 2018-04-02 | 2019-08-23 | 合肥美的电冰箱有限公司 | Wind cooling refrigerator and its control method of defrost, control system, controller |
-
2019
- 2019-11-28 CN CN201911212307.7A patent/CN110848886B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807132A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| JP2018128194A (en) * | 2017-02-08 | 2018-08-16 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner |
| CN108151231A (en) * | 2017-12-25 | 2018-06-12 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN108444037A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108488994A (en) * | 2018-02-14 | 2018-09-04 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN109469963A (en) * | 2018-09-28 | 2019-03-15 | 珠海格力电器股份有限公司 | A kind of defrosting control method and unit |
| CN109323370A (en) * | 2018-09-30 | 2019-02-12 | 广东美的制冷设备有限公司 | Air-conditioning and its defrosting method and device |
| CN109269019A (en) * | 2018-10-10 | 2019-01-25 | 珠海格力电器股份有限公司 | Defrosting control method, device and heating equipment |
| CN109827361A (en) * | 2018-12-29 | 2019-05-31 | 西安交通大学 | The reverse cycle defrosting method, apparatus of air-conditioning system and air-conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110848886A (en) | 2020-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110848886B (en) | Air conditioner, defrosting method thereof and computer readable storage medium | |
| CN109213654B (en) | Anomaly detection method and device | |
| CN110762747B (en) | Defrosting control method of air conditioner | |
| CN109946505B (en) | Voltage drop detection method and system, readable storage medium and computer equipment | |
| CN111078755A (en) | Time sequence data storage query method and device, server and storage medium | |
| CN107655173B (en) | Operation control method, operation control device, air conditioning system and computer readable storage medium | |
| CN112880130B (en) | Air conditioner control method and device and electronic equipment | |
| CN106933109B (en) | Intelligent control method for kitchen household appliances | |
| CN107478616A (en) | Screen pack laying dust detection method, household electrical appliances and computer-readable recording medium | |
| CN107218702B (en) | Air conditioner, air conditioner frequency adjusting method and computer readable storage medium | |
| CN111854059A (en) | Control method and device for preventing snow accumulation of air conditioner, air conditioner and storage medium | |
| CN117233645B (en) | Energy storage inverter battery abnormality judging method, system and medium | |
| CN112283882B (en) | Method and device for acquiring sampling value and air conditioner | |
| CN110608520B (en) | Air conditioner, control method thereof and readable storage medium | |
| CN109186044B (en) | Human body sensing method and device and air conditioner | |
| CN113704698B (en) | Event detection method and system for non-intrusive load identification | |
| CN112515465B (en) | Cooking equipment and intelligent drying method thereof | |
| CN113705710A (en) | Method and device for identifying default electricity consumption of electric vehicle charging facility | |
| JP7027273B2 (en) | Equipment selection support equipment and programs | |
| CN111594980A (en) | Air conditioner filth blockage judging method and device, medium and air conditioner | |
| CN108388949B (en) | Power equipment allocation method and system based on equipment relative service environment sensitivity | |
| CN113553545B (en) | Event detection method and system for small-current electrical appliance, equipment and storage medium | |
| CN115032446A (en) | Voltage and zero-crossing detection method, household appliance, control device and storage medium | |
| JP3278636B2 (en) | CPU usage rate calculation method, CPU usage rate calculation method, and recording medium storing CPU usage rate calculation program | |
| CN115829786B (en) | Power grid response adjusting method based on air conditioner load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |