CN116678100A - Control method and control device of air conditioner and air conditioner - Google Patents
Control method and control device of air conditioner and air conditioner Download PDFInfo
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- CN116678100A CN116678100A CN202310805848.0A CN202310805848A CN116678100A CN 116678100 A CN116678100 A CN 116678100A CN 202310805848 A CN202310805848 A CN 202310805848A CN 116678100 A CN116678100 A CN 116678100A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000010257 thawing Methods 0.000 claims abstract description 376
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 230000005494 condensation Effects 0.000 claims description 40
- 238000009833 condensation Methods 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 36
- 230000001276 controlling effect Effects 0.000 claims description 33
- 238000004590 computer program Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 7
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
-
- 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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and device of an air conditioner and the air conditioner. The method comprises the following steps: responding to a signal of the air conditioner in a heating mode, and acquiring front working information of the air conditioner, temperature parameters of the front working information and internal and external environment temperatures of the front working information; when the air conditioner does not defrost, if the temperature parameter meets the first defrosting condition, controlling the air conditioner to enter a defrosting mode; when the air conditioner has at least one defrosting operation, determining that the temperature parameter simultaneously meets a first defrosting condition and a second defrosting condition, and controlling the air conditioner to enter a defrosting mode if the time interval of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval; the first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter. The method provided by the invention ensures that the time for entering the defrosting mode of the air conditioner is more accurate, avoids the problem that the air conditioner enters the defrosting too early or too late, and ensures the smooth, efficient and thorough completion of the defrosting.
Description
Technical Field
The present invention relates to the field of electrical appliances, and in particular, to a control method and a control device for an air conditioner, and an air conditioner.
Background
In the related art, during the starting or running process of the outdoor unit of the existing air conditioner, particularly under the condition of lower air temperature in winter in north, the outdoor unit often has a frosting phenomenon, but the existing defrosting control technology for the outdoor unit of the existing air conditioner on the market is not perfect, the defrosting control method cannot accurately grasp the defrosting conditions required by the air conditioner to defrost, the problem of untimely defrosting or early defrosting is often caused, the defrosting efficiency is lower, and the targeted change and adaptation cannot be made according to different environments.
Disclosure of Invention
The invention provides a control method and a control device of an air conditioner and the air conditioner, which are used for solving the defects in the prior art and realizing the following technical effects: by analyzing the running state of the air conditioner and combining the outdoor environment state and the indoor environment state, defrosting entering conditions under different using scenes are set, so that the defrosting control of the air conditioner is more accurate, namely the time for entering the defrosting mode of the air conditioner is more accurate, the problem that the air conditioner enters defrosting too early or too late is avoided, and smooth, efficient and thorough defrosting is guaranteed.
According to an embodiment of the first aspect of the present invention, a control method of an air conditioner includes:
Responding to a signal of the air conditioner in a heating mode, acquiring front working information and temperature parameters of the air conditioner, and acquiring external environment temperature and indoor environment temperature;
if the front working information indicates that the air conditioner does not perform defrosting operation, determining that the temperature parameter meets a first defrosting condition, and controlling the air conditioner to enter a defrosting mode;
when the prepositive working information is that the air conditioner performs at least one defrosting operation, determining that the temperature parameter simultaneously meets a first defrosting condition and a second defrosting condition, and controlling the air conditioner to enter a defrosting mode if the interval time of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval;
the first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
According to one embodiment of the present invention, the temperature parameter includes a defrost detection temperature of the defrost sensor and an exhaust gas temperature of the compressor;
the first defrosting condition is that the defrosting detection temperature is smaller than or equal to a frost point temperature, the temperature difference between the exhaust temperature and the indoor environment temperature is smaller than a first set temperature, the exhaust temperature is smaller than a second set temperature, and at least the first set duration is maintained;
The frost point temperature is obtained according to the external environment temperature, and the first set temperature and the second set temperature are obtained according to the rotating speed of an inner fan of the air conditioner.
According to one embodiment of the invention, the frost temperature is obtained as follows:
obtaining the region type of a region where an air conditioner is located, wherein the region type at least comprises a common region and a frosting prone region;
obtaining the condensation point temperature of the air conditioner under the region type according to the region range where the external environment temperature is located and the region type;
and obtaining the frost point temperature according to the condensation point temperature.
According to an embodiment of the present invention, in the case that the pre-operation information is that the air conditioner has not performed a defrosting operation, the step of obtaining the frost point temperature according to the condensation point temperature includes: the frost point temperature is equal to the condensation point temperature;
or, when the pre-working information is that the air conditioner performs at least one defrosting operation, the step of obtaining the frost point temperature according to the condensation point temperature specifically includes:
acquiring the defrosting duration time in the last defrosting operation;
determining an error correction value according to the interval range of the defrosting duration;
And adding the error correction value and the condensation point temperature to obtain the frost point temperature, wherein the error correction value is positively correlated with the defrosting duration.
According to one embodiment of the present invention, after the steps of obtaining the front working information of the air conditioner and the temperature parameter thereof in response to the signal that the air conditioner is in the heating mode, and obtaining the external environment temperature and the indoor environment temperature, the control method of the air conditioner further includes:
acquiring the defrosting duration time in the last defrosting operation under the condition that the prepositive working information is that the air conditioner at least performs one defrosting operation;
and if the defrosting duration time is greater than or equal to the maximum defrosting duration time and the temperature parameter meets the first defrosting condition, controlling the air conditioner to enter the defrosting mode.
According to one embodiment of the present invention, the temperature parameter further includes a minimum defrost detection temperature detected by the defrost sensor;
the second defrosting condition is that the difference between the current defrosting detection temperature and the minimum defrosting detection temperature is larger than or equal to a set temperature difference and at least lasts for a second set period of time.
According to one embodiment of the present invention, after the step of responding to the signal that the air conditioner is in the heating mode, the control method of the air conditioner further includes:
Acquiring accumulated operation time of the compressor and defrosting detection temperature of a defrosting sensor;
and determining that the accumulated operation duration and the defrosting detection temperature meet a third defrosting condition, and controlling the air conditioner to forcedly enter the defrosting mode.
According to one embodiment of the present invention, the step of determining that the accumulated operation duration and the defrosting detection temperature satisfy a third defrosting condition, and controlling the air conditioner to forcedly enter the defrosting mode, specifically includes:
determining that the accumulated operation duration at least reaches a first operation duration, the defrosting detection temperature is smaller than a third set temperature, and at least continuously lasts for a third set duration, and controlling the air conditioner to forcedly enter the defrosting mode;
determining that the accumulated operation duration at least reaches a second operation duration, the defrosting detection temperature is smaller than a fourth set temperature, and at least lasts for a third set duration, and controlling the air conditioner to forcedly enter the defrosting mode;
if the accumulated operation duration is at least up to the third operation duration, controlling the air conditioner to forcedly enter the defrosting mode;
the first operation time length is smaller than the second operation time length, the second operation time length is smaller than the third operation time length, and the third set temperature is smaller than the fourth set temperature.
According to one embodiment of the present invention, after the steps of obtaining the front working information of the air conditioner and the temperature parameter thereof in response to the signal that the air conditioner is in the heating mode, and obtaining the external environment temperature and the indoor environment temperature, the control method of the air conditioner further includes:
under the condition that the prepositive working information is that the air conditioner at least carries out one defrosting operation, determining that the shortest defrosting interval is a preset default value;
and acquiring the defrosting duration in the last defrosting operation, correcting the shortest defrosting interval according to the defrosting duration, and updating the shortest defrosting interval.
According to one embodiment of the present invention, the step of correcting the shortest defrosting interval and updating the shortest defrosting interval according to the defrosting duration specifically includes:
determining that a correction value for correcting the shortest defrosting interval is a positive value according to the defrosting duration time being a first time interval;
determining that a correction value for correcting the shortest defrosting interval is zero according to the defrosting duration time being a second duration time interval;
determining that a correction value for correcting the shortest defrosting interval is a negative value according to the defrosting duration time being a third duration time interval;
According to the defrosting duration time being a fourth time interval, correcting and updating the shortest defrosting interval to be a minimum duration value;
the first time interval is smaller than the second time interval, the second time interval is smaller than the third time interval, and the third time interval is smaller than the fourth time interval.
According to a second aspect of the present invention, a control device for an air conditioner includes:
the acquisition module is used for responding to the signal of the air conditioner in the heating mode, acquiring front working information and temperature parameters of the air conditioner, and acquiring the external environment temperature and the indoor environment temperature;
the first control module is used for controlling the air conditioner to enter a defrosting mode when the temperature parameter meets a first defrosting condition under the condition that the front working information is that the air conditioner does not perform defrosting operation;
the second control module is used for determining that the temperature parameter simultaneously meets a first defrosting condition and a second defrosting condition under the condition that the prepositive working information is that the air conditioner performs defrosting operation at least once, and controlling the air conditioner to enter a defrosting mode if the interval time of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval;
the first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
An air conditioner according to an embodiment of a third aspect of the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing a control method of the air conditioner according to an embodiment of the first aspect of the present invention when executing the program.
The invention provides a control method, a control device and an air conditioner of the air conditioner, which are used for distinguishing the front defrosting condition of the air conditioner by acquiring the front working information of the air conditioner, and obtaining the defrosting entering conditions corresponding to different front defrosting conditions of the air conditioner by utilizing at least one of the external environment temperature, the indoor environment temperature and the temperature parameters of the air conditioner.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of an air conditioner provided by the invention;
fig. 2 is a schematic structural view of a control device of an air conditioner according to the present invention;
fig. 3 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, 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 embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The control method and device of the air conditioner and the air conditioner provided by the invention are described below with reference to the accompanying drawings. Before the embodiments of the present invention are described in detail, the entire application scenario is described. The control method, the control device, the electronic equipment and the computer readable storage medium of the air conditioner can be applied to the local area of the air conditioner, cloud platforms in the field of the Internet, cloud platforms in the field of other kinds of Internet, or third party equipment. The third party device may include a mobile phone, a tablet computer, a notebook computer, a vehicle-mounted computer, and other intelligent terminals.
In the following, a control method suitable for an air conditioner is only described as an example, and it should be understood that the control method according to the embodiment of the present invention may also be suitable for a cloud platform and a third party device.
As shown in fig. 1, a control method of an air conditioner according to an embodiment of a first aspect of the present invention includes:
step S1, responding to a signal of an air conditioner in a heating mode, acquiring front working information and temperature parameters of the air conditioner, and acquiring external environment temperature and indoor environment temperature;
Step S2, when the front working information is that the air conditioner does not defrost, determining that the temperature parameter meets a first defrosting condition, and controlling the air conditioner to enter a defrosting mode;
step S3, under the condition that the prepositive working information is that the air conditioner performs at least one defrosting operation, determining a temperature parameter to simultaneously meet a first defrosting condition and a second defrosting condition, and controlling the air conditioner to enter a defrosting mode if the interval time of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval;
the first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
According to the control method of the air conditioner, the specific working process is as follows: firstly, after the air conditioner is started, the controller acquires a current working mode of the air conditioner, and after the controller determines that the air conditioner is in a normal heating mode, namely, after the controller receives a signal of the heating mode, the controller further acquires the external environment temperature of the outdoor environment of the outdoor unit of the air conditioner, the indoor environment temperature of the indoor environment of the indoor unit and the temperature parameter of the air conditioner, acquires and analyzes and judges the working state of the air conditioner in a current period after the air conditioner is started, and further acquires the front working information of the air conditioner.
It should be explained that the pre-operation information is obtained by analyzing the operation state of the air conditioner from the time when the heating mode is turned on to the current time, and includes information such as whether the defrosting operation has been performed by the air conditioner after the heating mode is turned on and a specific number of times of defrosting operations have been performed, and the present invention is not limited thereto.
Further, after the front working information is obtained in step S1, the controller determines, according to the front working information, a defrosting condition to be satisfied when the air conditioner enters the defrosting mode, where the defrosting condition is different when the front working information is different.
Specifically, in the case that the pre-operation information is that the air conditioner does not perform the defrosting operation, the defrosting conditions include a first defrosting condition, and at this time, when the controller determines that the temperature parameter of the air conditioner satisfies the first defrosting condition, the air conditioner enters the defrosting mode, and it can be understood that the above case is an entry condition of the first defrosting operation of the air conditioner, and thus there is no limitation of the shortest defrosting interval.
When the controller determines that the temperature parameter of the air conditioner simultaneously satisfies the first defrosting condition and the second defrosting condition, and when the interval between two adjacent defrosting operations is determined to be longer than or equal to the shortest defrosting interval, the air conditioner enters the defrosting mode.
The first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
It should be noted that the "temperature parameter of the air conditioner" refers to a temperature parameter of the whole or internal components of the air conditioner when the air conditioner is operated, wherein the temperature parameter may include at least one of a compressor discharge temperature, a compressor suction temperature, a detection temperature of a defrosting sensor, a coil temperature of the indoor unit, a coil temperature of the outdoor unit, and the like of the air conditioner, and the composition of the temperature parameter is not particularly limited in the present invention.
In the related art, during the starting or running process of the outdoor unit of the existing air conditioner, particularly under the condition of lower air temperature in winter in north, the outdoor unit often has a frosting phenomenon, but the existing defrosting control technology for the outdoor unit of the existing air conditioner on the market is not perfect, the defrosting control method cannot accurately grasp the defrosting conditions required by the air conditioner to defrost, the problem of untimely defrosting or early defrosting is often caused, the defrosting efficiency is lower, and the targeted change and adaptation cannot be made according to different environments.
In summary, in order to solve the technical problems in the related art, the present invention provides a control method of an air conditioner, by acquiring front working information of the air conditioner, distinguishing front defrosting conditions of the air conditioner, and utilizing at least one of an external environment temperature, an indoor environment temperature and temperature parameters of the air conditioner to obtain defrosting entry conditions corresponding to different front defrosting conditions of the air conditioner, further, in a heating operation process of the air conditioner, the air conditioner enters a defrosting mode only after the air conditioner meets the defrosting entry conditions, so that the defrosting entry conditions under different use situations are set by analyzing the operation state of the air conditioner and combining the indoor and outdoor environment states, so that defrosting control of the air conditioner is more accurate, namely, the time of entering the defrosting mode of the air conditioner is more accurate, the problem that the air conditioner enters defrosting too early or too late is avoided, and smooth, efficient and thorough completion of defrosting is ensured.
According to some embodiments of the present invention, in step S2, if the air conditioner enters the defrosting mode for the first time, the air conditioner needs to satisfy not only the first defrosting condition but also the limitation of the duration of use of the compressor at the same time, and at this time, the air conditioner may not be limited by the shortest defrosting interval.
Specifically, the limit of the compressor use time period is: after the air conditioner is powered on for the first time, the air conditioner is allowed to enter a defrosting mode after the first defrosting condition is met only when the accumulated operation duration of the compressor reaches at least thirty minutes and the single continuous operation duration reaches at least one minute.
It should be noted that, in the above-described limitation of the compressor use period, the compressor is allowed to enter the defrost mode for at least three consecutive minutes, in addition to two minutes required to determine the defrost condition.
In the present embodiment, the considerations of the zero clearing operation for 30 minutes of cumulative operation of the compressor are as follows: firstly, when the air conditioner enters a refrigeration or dehumidification mode, the accumulated running time of the compressor is cleared; secondly, when the remote control is turned OFF or the temperature sensor is OFF, the accumulated running time of the compressor is not cleared; third, when the air conditioner is shut down due to fault protection, the accumulated operation duration of the compressor is not cleared.
According to other embodiments of the present invention, if the air conditioner does not enter the defrost mode for the first time in step S3, the air conditioner needs to satisfy the first defrost condition, the second defrost condition, the limitation of the compressor use period, and the limitation of the shortest defrost interval at the same time.
Specifically, after the first defrosting cycle is completed, when the cumulative operation duration of the compressor reaches at least thirty minutes and the single continuous operation duration reaches at least one minute, and the interval time between the two defrosting operations is longer than the shortest defrosting interval, the air conditioner is allowed to enter the defrosting mode after simultaneously satisfying the first defrosting condition and the second defrosting condition.
In the present embodiment, the considerations of the zero clearing operation for 30 minutes of cumulative operation of the compressor are as follows: firstly, when the air conditioner enters a refrigeration mode or a dehumidification mode after defrosting operation is finished, the accumulated running time of the compressor is cleared; secondly, when the remote control is turned OFF or the temperature sensor is OFF, the accumulated running time of the compressor is not cleared; third, when the air conditioner is shut down due to fault protection, the accumulated operation duration of the compressor is not cleared.
Further, in the present embodiment, the notice of the clear operation of the interval duration between the two defrosting operations is as follows: firstly, resetting the time length of a defrosting interval twice under the conditions of defrosting end, power failure, refrigeration or dehumidification of an air conditioner; secondly, the interval time only calculates the time under the heating mode, namely the running time of the compressor and the OFF time of the temperature sensor; thirdly, the shutdown time is not cleared, but the time after shutdown is not accumulated in the interval time; fourth, when the air conditioner is shut down due to fault protection, the interval duration is not cleared, and the shut down duration of the compressor is accumulated in the interval duration.
In addition, it should be noted that there are special cases in both step S2 and step S3 in which the defrosting mode is not entered, that is, although the air conditioner satisfies the defrosting entry condition in step S2 or step S3, the air conditioner does not enter the defrosting mode if at least one of the following special cases occurs, specifically, the special cases include: firstly, the difference value between the current indoor environment temperature and the set indoor environment temperature is more than or equal to minus 1 ℃; second, the difference between the current indoor environment temperature and the set indoor environment temperature is less than-1 ℃ and the actual operating frequency of the compressor is less than the set operating frequency thereof. In the above-described embodiment, it is noted that when the set temperature of the indoor unit is fixed and is 10 ℃ (including the overseas "10 ℃ heating function"), the above-described special case need not be considered; when the indoor unit transmits the real-time set temperature to the outdoor unit, the special situation needs to be considered.
According to some embodiments of the invention, the temperature parameter includes a defrost detection temperature of the defrost sensor and an exhaust temperature of the compressor, and the first defrost condition is that the defrost detection temperature is less than or equal to a frost point temperature, a temperature difference between the exhaust temperature and an indoor ambient temperature is less than a first set temperature, the exhaust temperature is less than a second set temperature, and at least for a first set period of time.
The frost point temperature is obtained according to the external environment temperature, and the first set temperature and the second set temperature are obtained according to the rotating speed of an inner fan of the air conditioner.
In this embodiment, the first defrosting condition includes an outdoor side temperature condition and an indoor side temperature condition, wherein the outdoor side temperature condition requires the defrosting detection temperature to be less than or equal to the frost point temperature and at least for a first set period of time, and the indoor side temperature condition requires the temperature difference between the exhaust gas temperature and the indoor environment temperature to be less than the first set temperature and the exhaust gas temperature to be less than the second set temperature and at least for the first set period of time.
Further, in the outdoor side temperature condition in the first defrosting condition, the frost point temperature is obtained as follows:
obtaining the region type of the region where the air conditioner is located, wherein the region type at least comprises a common region and a frosting prone region;
obtaining the condensation point temperature of an air conditioner under the region type according to the region range where the external environment temperature is located and the region type;
and obtaining the frost point temperature according to the condensation point temperature.
It can be understood that, in this embodiment, in order to obtain the frost point temperature, the controller first needs to determine, through the information such as the interval range where the external environment temperature is located and the region type, to obtain the condensation point temperature of the air conditioner in the local region type, and then obtains the frost point temperature according to the condensation point temperature.
For ease of understanding, a specific example is given below to explain the manner in which the condensation point temperature is obtained. For example, tes (i.e., condensation point temperature) is calculated in a common area and a frosting prone area, and the condensation point temperature under different area types is calculated as follows:
in the general region: when the external environment temperature Tao is more than or equal to 6 ℃, the condensation point temperature tes= -6 ℃; when the external environment temperature Tao is less than or equal to-15 ℃ and is less than 6 ℃, the condensation point temperature Tes= (5 multiplied by Tao-72)/7; when the temperature of the external environment is less than or equal to-23 ℃ and less than or equal to-15 ℃, the condensation point temperature Tes= (Tao-69)/4; when the external environment temperature Tao < -23 ℃, the condensation point temperature tes= -23 ℃.
In the area easy to frost: when the external environment temperature Tao is more than or equal to 6 ℃, the condensation point temperature tes= -5 ℃; when the external environment temperature Tao is less than or equal to-15 ℃ and is less than 6 ℃, the condensation point temperature Tes= (13 multiplied by Tao-120)/21; when the temperature of the external environment is less than or equal to-23 ℃ and less than or equal to-15 ℃, the condensation point temperature Tes= (Tao-45)/4; when the external environment temperature Tao < -23 ℃, the condensation point temperature tes= -17 ℃.
Further, after the condensation point temperature is obtained, the controller further determines a frost point temperature according to the obtained condensation point temperature, specifically, the step of obtaining the frost point temperature according to the condensation point temperature specifically includes:
And determining the frost point temperature according to the condensation point temperature and the front working information.
That is, when the pre-operation information is different (for example, the number of defrosting operations that the air conditioner has undergone is different), the calculation mode of the frost point temperature is also changed.
For example, in the case that the front working information is that the air conditioner has not performed the defrosting operation, the frost point temperature is obtained according to the condensation point temperature: the frost point temperature is equal to the condensation point temperature. I.e. the first defrosting operation after the heating is started, the frost point temperature is equal to the condensation point temperature.
For another example, when the front working information is that the air conditioner performs at least one defrosting operation, the step of obtaining the frost point temperature according to the condensation point temperature specifically includes:
acquiring the defrosting duration time in the last defrosting operation;
determining an error correction value according to the interval range of the defrosting duration;
and adding the error correction value and the condensation point temperature to obtain the frost point temperature, wherein the error correction value is positively correlated with the defrosting duration.
That is, after the first defrosting operation is finished, the temperature of the frost point is correspondingly adjusted according to the defrosting duration of the last defrosting operation from the second defrosting operation of the air conditioner, that is, the temperature of the frost point is continuously corrected and updated in the multiple defrosting operations, so that the temperature of the frost point when entering defrosting each time is ensured to be in accordance with the current air conditioner state, the entering condition of the defrosting operation each time can be updated and corrected according to different actual conditions, the accuracy and timeliness of the time when the air conditioner executes the defrosting operation each time are ensured, and the defrosting efficiency and the defrosting effect of the air conditioner are greatly improved.
Specifically, in the case where the pre-operation information is that the air conditioner has performed at least one defrosting operation, the correction and update process of the frost point temperature is adjusted as follows:
when the defrosting duration is less than 2 minutes, TL (frost point temperature) is adjusted according to the following formula: TL (frost temperature) =tes (condensation temperature) -2 ℃;
TL (frost point temperature) =tes (condensation point temperature) when the defrosting duration is within 2 minutes to 7 minutes 59 seconds;
TL (frost point temperature) =tes (condensation point temperature) +2 ℃ when the defrosting duration is within 7 minutes 59 seconds to 8 minutes 59 seconds;
when the defrosting duration is longer than 8 minutes 59 seconds, TL (frost point temperature) =tes (condensation point temperature) +4 ℃.
Further, in the indoor side temperature condition in the first defrosting condition, the first set temperature and the second set temperature are both obtained according to the rotation speed of the inner fan of the air conditioner.
For example, when the rotational speed gear of the inner fan is a low wind speed gear or a mute wind speed gear, the first set temperature takes a value of 25 ℃; when the rotational speed gear of the inner fan is the rest rotational speed gear, the first set temperature is 20 ℃.
When the rotating speed gear of the inner fan is a low wind speed gear or a mute wind speed gear, the second set temperature is 45 ℃; when the rotational speed gear of the inner fan is the rest rotational speed gear, the second set temperature is 42 ℃.
Of course, the above embodiment is only one of many embodiments of the present invention, and does not constitute a specific limitation on the first set temperature and the second set temperature of the present invention.
According to some embodiments of the invention, the temperature parameter further includes a minimum defrost detection temperature detected by the defrost sensor, and the second defrost condition is that a difference between the current defrost detection temperature and the minimum defrost detection temperature is greater than or equal to a set temperature difference for at least a second set period of time.
For example, the minimum defrost detection temperature Temin is determined as follows: in the heating mode, the compressor is started, the four-way valve is electrified, and the minimum value Temin of the average value of the defrosting detection temperatures Te within 10 seconds every interval from 7 minutes to 12 minutes after the compressor is started to continuously run is recorded.
Further, under the condition that the Temin-Te is more than or equal to 5 ℃ for 2 minutes continuously, the second defrosting condition is satisfied.
It should be noted that, within 7 minutes of starting the compressor after starting the heating start-up compressor or defrosting, if the compressor is stopped, the judgment of continuous operation of the compressor is carried out again for 7 minutes; if the compressor can continuously run for more than 7 minutes, recording the Temin in the accumulated running time of the compressor within 5 minutes after the moment (when the shutdown of the compressor occurs, the Temin which is taken before the shutdown is adopted if the shutdown time is less than or equal to 60 minutes, and when the shutdown time is greater than 60 minutes, the Temin in which is continuously run for 7-12 minutes is started after the shutdown time is taken again).
According to some embodiments of the present invention, after the steps of acquiring front working information of the air conditioner and temperature parameters thereof, and acquiring an external environment temperature and an indoor environment temperature in response to a signal that the air conditioner is in a heating mode, the control method of the air conditioner further includes:
acquiring the defrosting duration time in the last defrosting operation under the condition that the prepositive working information is that the air conditioner at least performs the defrosting operation once;
and if the defrosting duration is longer than or equal to the maximum defrosting duration and the temperature parameter meets the first defrosting condition, controlling the air conditioner to enter a defrosting mode.
In this embodiment, unlike the defrosting entry condition in step S3, this embodiment increases the judgment of the duration of defrosting for the last defrosting operation, and when the duration of defrosting is equal to or greater than the maximum duration of defrosting, the air conditioner can directly enter the defrosting mode without satisfying the second defrosting condition, as long as the first defrosting condition and the limitation of the shortest defrosting interval are satisfied.
For example, when the defrosting duration of the last defrosting operation is greater than or equal to 9 minutes, the air conditioner only needs to judge the first defrosting condition and the shortest defrosting interval before entering the next defrosting operation.
According to some embodiments of the invention, after the step of responding to the signal that the air conditioner is in the heating mode, the control method of the air conditioner further includes:
acquiring accumulated operation time of the compressor and defrosting detection temperature of a defrosting sensor;
and determining that the accumulated operation duration and the defrosting detection temperature meet a third defrosting condition (forced defrosting condition), and controlling the air conditioner to forcedly enter a defrosting mode.
It can be understood that the usage scenario given in this embodiment is: the air conditioner does not need to be judged by the first setting condition, the second setting condition, the shortest defrosting interval and other conditions, and when the air conditioner meets the third defrosting condition, the controller controls the air conditioner to forcedly enter the defrosting mode. That is, the above embodiment is an embodiment in which the air conditioner forcibly enters the defrosting mode.
Further, determining that the accumulated operation duration and the defrosting detection temperature meet a third defrosting condition, and controlling the air conditioner to forcedly enter a defrosting mode, specifically includes:
determining that the accumulated operation time length at least reaches the first operation time length, the defrosting detection temperature is smaller than the third set temperature, and at least continuously for the third set time length, and controlling the air conditioner to forcedly enter a defrosting mode;
determining that the accumulated operation time length at least reaches the second operation time length, the defrosting detection temperature is smaller than the fourth set temperature, and at least the third set time length is continued, and controlling the air conditioner to forcedly enter a defrosting mode;
And controlling the air conditioner to forcedly enter the defrosting mode when the accumulated operation time is at least up to the third operation time.
The first operation time length is smaller than the second operation time length, the second operation time length is smaller than the third operation time length, and the third set temperature is smaller than the fourth set temperature.
For example, the step of determining that the accumulated operation duration and the defrosting detection temperature satisfy the third defrosting condition and controlling the air conditioner to forcedly enter the defrosting mode specifically includes:
when the accumulated operation time of the compressor is up to 45 minutes, if Te < -24 ℃ and lasts for 2 minutes, the air conditioner directly enters a defrosting mode (45 minutes is higher than the shortest defrosting interval);
when the accumulated running time of the compressor is 120 minutes, if Te < -18 ℃ lasts for 2 minutes, the air conditioner directly enters a defrosting mode;
when the accumulated operation time of the compressor is up to 480 minutes, the air conditioner directly enters a defrosting mode.
The manner in which the shortest interval duration is obtained in the present method is given below.
According to some embodiments of the present invention, after the steps of acquiring front working information of the air conditioner and temperature parameters thereof, and acquiring an external environment temperature and an indoor environment temperature in response to a signal that the air conditioner is in a heating mode, the control method of the air conditioner further includes:
Under the condition that the prepositive working information is that the air conditioner at least carries out one defrosting operation, determining that the shortest defrosting interval is a preset default value;
and acquiring the defrosting duration in the last defrosting operation, correcting the shortest defrosting interval according to the defrosting duration, and updating the shortest defrosting interval.
Further, the step of correcting the shortest defrosting interval and updating the shortest defrosting interval according to the defrosting duration time specifically includes:
determining that a correction value for correcting the shortest defrosting interval is a positive value according to the defrosting duration time as a first time interval;
determining that the correction value for correcting the shortest defrosting interval is zero according to the defrosting duration time being the second duration time interval;
determining that a correction value for correcting the shortest defrosting interval is a negative value according to the defrosting duration time being a third duration time interval;
and correcting and updating the shortest defrosting interval to be the minimum duration value according to the fourth duration interval of the defrosting duration.
The first time interval is smaller than the second time interval, the second time interval is smaller than the third time interval, and the third time interval is smaller than the fourth time interval.
For example, after the first defrost cycle is powered up, the last shortest defrost interval is defaulted to 45 minutes.
The shortest defrosting interval is correspondingly adjusted according to the last defrosting duration, and it is to be explained that the defrosting duration refers to the accumulated duration from the start to the stop of the compressor during the defrosting, and if the compressor is stopped due to faults and protection, the stopping time is not calculated in the defrosting duration, and the adjusting mode is as follows:
if the last defrosting duration is less than 2 minutes, the shortest defrosting interval is adjusted according to the following formula: this time of shortest defrost interval = last shortest defrost interval +5min;
if the duration of the last defrosting is within 2 minutes to 7 minutes and 59 seconds, the shortest defrosting interval is kept unchanged, namely, the shortest defrosting interval=the shortest defrosting interval of the last time;
if the last defrosting duration is within 7 minutes 59 seconds to 8 minutes 59 seconds, the shortest defrosting interval=the last shortest defrosting interval-5 minutes;
if the last defrosting duration is longer than 8 minutes and 59 seconds, the shortest defrosting interval is set to be 30 minutes.
In addition, the time of the shortest defrosting interval is limited to a minimum value of 30min and a maximum value of 75min.
According to some embodiments of the present invention, after controlling the air conditioner to enter the defrosting mode, the control method of the air conditioner further includes:
Based on the defrosting start signal, the compressor is controlled to stop, the four-way valve is controlled to reverse after 40 seconds, the external fan is controlled to stop, the compressor is controlled to start and run according to the program oil return platform setting, and then the running frequency of the compressor is controlled to run up to the target frequency of 95Hz (the target frequency is not limited).
During operation in defrost mode, it is also noted that protection such as compressor current protection, compressor discharge protection, etc. is active during defrost and the compressor exits defrost due to protection or failure shutdown. Further, the valve opening degree during defrosting was 480, and defrosting in/out wind speed was performed in accordance with the wind speed within 3 minutes of the compressor being turned on.
Among the protection involved during defrosting is: 1. system class protection: high temperature prevention and protection of TD jetting; 2. and (3) electric control class protection: total current protection, compressor phase current protection, module over-temperature protection, driving module protection (including IPM protection, compressor over-temperature/pressure over-high protection, over-voltage and under-voltage protection, compressor locked-rotor/compressor instant stop, compressor operation out-of-step/compressor disengaging position, position detection loop fault, and current flowing of the motor). When the protection appears in the defrosting process, the shutdown time of the press is not counted in the defrosting time, the press directly enters defrosting after restarting, and the operation frequency is limited by the oil return platform.
In addition, if the air conditioner is turned on again after being turned off during defrosting, it is necessary to re-judge the defrosting entry condition to re-enter defrosting.
According to some embodiments of the present invention, after the step of controlling the air conditioner to enter the defrosting mode, the defrosting control method of the air conditioner further includes:
after the air conditioner continuously operates in the defrosting mode for at least the shortest defrosting time, controlling the air conditioner to exit the defrosting mode and restore to the heating mode according to the condition that the air conditioner at least meets at least one of the first exit condition, the second exit condition and the third exit condition;
the first condition is that the coil temperature of the outdoor unit is larger than the first exit temperature and at least lasts for a first exit time period; the second condition is that the coil temperature of the outdoor unit is larger than the second exit temperature and at least lasts for a second exit time period; the third condition is that the defrosting duration of the air conditioner operation defrosting mode meets the set condition.
The first exit temperature is less than the second exit temperature, and the first exit time period is longer than the second exit time period.
For example, when the air conditioner satisfies any one of the following conditions in the defrost mode, the defrost operation is resumed to the heating operation (the compressor operation is started 1 minute later to determine the external coil condition).
The first condition is: the coil temperature of the outdoor unit is continuously higher than 5 ℃ for 60 seconds; the second condition is: the coil temperature of the outdoor unit is continuously higher than 10 ℃ for 20 seconds; the third condition is: tim=0.25t-2, and tim is less than or equal to 12 minutes, wherein T is the defrosting interval duration in the complete defrosting process.
Further, when the air conditioner satisfies the defrosting exit condition, the following procedure is performed: the compressor is stopped, the four-way valve is closed after the external fan is opened for 50 seconds, and the compressor is operated according to the starting process after the external fan is opened for 60 seconds.
The control device of the air conditioner provided by the invention is described below, and the control device of the air conditioner described below and the control method of the air conditioner described above can be referred to correspondingly.
As shown in fig. 2, a control device of an air conditioner according to an embodiment of a second aspect of the present invention includes:
an acquiring module 110, configured to acquire front working information of an air conditioner and a temperature parameter thereof, and acquire an external environment temperature and an indoor environment temperature in response to a signal that the air conditioner is in a heating mode;
the first control module 120 is configured to, when the pre-working information indicates that the air conditioner has not performed a defrosting operation, determine that the temperature parameter satisfies a first defrosting condition, and control the air conditioner to enter a defrosting mode;
the second control module 130 is configured to determine that the temperature parameter satisfies both the first defrosting condition and the second defrosting condition when the pre-working information indicates that the air conditioner performs at least one defrosting operation, and if the interval time of two adjacent defrosting operations is greater than or equal to the shortest defrosting interval, then control the air conditioner to enter a defrosting mode;
The first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
An air conditioner according to an embodiment of a third aspect of the present invention includes an indoor unit and an outdoor unit, and further includes a control device of the air conditioner as described in the embodiment of the second aspect of the present invention.
According to the control device of the air conditioner and the air conditioner, the front defrosting conditions of the air conditioner are distinguished by acquiring the front working information of the air conditioner, and at least one of the external environment temperature, the indoor environment temperature and the temperature parameter of the air conditioner is utilized to obtain the defrosting entering conditions corresponding to the air conditioner under different front defrosting conditions.
Fig. 3 illustrates a physical schematic diagram of an electronic device, as shown in fig. 3, where the electronic device may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. The processor 810 may call logic instructions in the memory 830 to perform a control method of the air conditioner.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer can execute the control method of the air conditioner provided by the above methods.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the control method of an air conditioner provided by the above methods.
The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product, which may be stored in a computer-readable storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the various embodiments or methods of some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A control method of an air conditioner, comprising:
responding to a signal of the air conditioner in a heating mode, acquiring front working information and temperature parameters of the air conditioner, and acquiring external environment temperature and indoor environment temperature;
if the front working information indicates that the air conditioner does not perform defrosting operation, determining that the temperature parameter meets a first defrosting condition, and controlling the air conditioner to enter a defrosting mode;
when the prepositive working information is that the air conditioner performs at least one defrosting operation, determining that the temperature parameter simultaneously meets a first defrosting condition and a second defrosting condition, and controlling the air conditioner to enter a defrosting mode if the interval time of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval;
The first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
2. The control method of an air conditioner according to claim 1, wherein the temperature parameter includes a defrost detection temperature of a defrost sensor and an exhaust temperature of a compressor;
the first defrosting condition is that the defrosting detection temperature is smaller than or equal to a frost point temperature, the temperature difference between the exhaust temperature and the indoor environment temperature is smaller than a first set temperature, the exhaust temperature is smaller than a second set temperature, and at least the first set duration is maintained;
the frost point temperature is obtained according to the external environment temperature, and the first set temperature and the second set temperature are obtained according to the rotating speed of an inner fan of the air conditioner.
3. The control method of an air conditioner according to claim 2, wherein the acquiring of the frost point temperature includes the steps of:
obtaining the region type of a region where an air conditioner is located, wherein the region type at least comprises a common region and a frosting prone region;
obtaining the condensation point temperature of the air conditioner under the region type according to the region range where the external environment temperature is located and the region type;
And obtaining the frost point temperature according to the condensation point temperature.
4. The control method of an air conditioner according to claim 3, wherein, in the step of obtaining the frost point temperature according to the condensation point temperature, in the case where the pre-operation information is that the air conditioner has not performed a defrosting operation: the frost point temperature is equal to the condensation point temperature;
or, when the pre-working information is that the air conditioner performs at least one defrosting operation, the step of obtaining the frost point temperature according to the condensation point temperature specifically includes:
acquiring the defrosting duration time in the last defrosting operation;
determining an error correction value according to the interval range of the defrosting duration;
and adding the error correction value and the condensation point temperature to obtain the frost point temperature, wherein the error correction value is positively correlated with the defrosting duration.
5. The method according to claim 2, further comprising, after the steps of acquiring front operation information of the air conditioner and its temperature parameters, and acquiring an outside ambient temperature and an indoor ambient temperature in response to the signal that the air conditioner is in the heating mode:
Acquiring the defrosting duration time in the last defrosting operation under the condition that the prepositive working information is that the air conditioner at least performs one defrosting operation;
and if the defrosting duration time is greater than or equal to the maximum defrosting duration time and the temperature parameter meets the first defrosting condition, controlling the air conditioner to enter the defrosting mode.
6. The control method of an air conditioner according to claim 2, wherein the temperature parameter further includes a minimum defrost detection temperature detected by the defrost sensor;
the second defrosting condition is that the difference between the current defrosting detection temperature and the minimum defrosting detection temperature is larger than or equal to a set temperature difference and at least lasts for a second set period of time.
7. The control method of an air conditioner according to any one of claims 1 to 6, further comprising, after the step of responding to a signal that the air conditioner is in a heating mode:
acquiring accumulated operation time of the compressor and defrosting detection temperature of a defrosting sensor;
and determining that the accumulated operation duration and the defrosting detection temperature meet a third defrosting condition, and controlling the air conditioner to forcedly enter the defrosting mode.
8. The method of controlling an air conditioner according to claim 7, wherein the step of determining that the accumulated operating time period and the defrost detection temperature satisfy a third defrost condition, controlling the air conditioner to forcibly enter the defrost mode, comprises:
determining that the accumulated operation duration at least reaches a first operation duration, the defrosting detection temperature is smaller than a third set temperature, and at least continuously lasts for a third set duration, and controlling the air conditioner to forcedly enter the defrosting mode;
determining that the accumulated operation duration at least reaches a second operation duration, the defrosting detection temperature is smaller than a fourth set temperature, and at least lasts for a third set duration, and controlling the air conditioner to forcedly enter the defrosting mode;
if the accumulated operation duration is at least up to the third operation duration, controlling the air conditioner to forcedly enter the defrosting mode;
the first operation time length is smaller than the second operation time length, the second operation time length is smaller than the third operation time length, and the third set temperature is smaller than the fourth set temperature.
9. The method according to any one of claims 1 to 6, further comprising, after the steps of acquiring front-end operation information of the air conditioner and temperature parameters thereof in response to a signal that the air conditioner is in a heating mode, and acquiring an outside ambient temperature and an indoor ambient temperature:
Under the condition that the prepositive working information is that the air conditioner at least carries out one defrosting operation, determining that the shortest defrosting interval is a preset default value;
and acquiring the defrosting duration in the last defrosting operation, correcting the shortest defrosting interval according to the defrosting duration, and updating the shortest defrosting interval.
10. The control method of an air conditioner according to claim 9, wherein the step of correcting the shortest defrosting interval and updating the shortest defrosting interval according to the defrosting duration time specifically includes:
determining that a correction value for correcting the shortest defrosting interval is a positive value according to the defrosting duration time being a first time interval;
determining that a correction value for correcting the shortest defrosting interval is zero according to the defrosting duration time being a second duration time interval;
determining that a correction value for correcting the shortest defrosting interval is a negative value according to the defrosting duration time being a third duration time interval;
according to the defrosting duration time being a fourth time interval, correcting and updating the shortest defrosting interval to be a minimum duration value;
the first time interval is smaller than the second time interval, the second time interval is smaller than the third time interval, and the third time interval is smaller than the fourth time interval.
11. A control device of an air conditioner, comprising:
the acquisition module is used for responding to the signal of the air conditioner in the heating mode, acquiring front working information and temperature parameters of the air conditioner, and acquiring the external environment temperature and the indoor environment temperature;
the first control module is used for controlling the air conditioner to enter a defrosting mode when the temperature parameter meets a first defrosting condition under the condition that the front working information is that the air conditioner does not perform defrosting operation;
the second control module is used for determining that the temperature parameter simultaneously meets a first defrosting condition and a second defrosting condition under the condition that the prepositive working information is that the air conditioner performs defrosting operation at least once, and controlling the air conditioner to enter a defrosting mode if the interval time of two adjacent defrosting operations is longer than or equal to the shortest defrosting interval;
the first defrosting condition is obtained according to the external environment temperature, the indoor environment temperature and the temperature parameter, and the second defrosting condition is obtained according to the temperature parameter.
12. An air conditioner comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the control method of the air conditioner according to any one of claims 1 to 10 when executing the program.
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| CN202310805848.0A CN116678100A (en) | 2023-06-30 | 2023-06-30 | Control method and control device of air conditioner and air conditioner |
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