CN112050384A - Control method of air conditioner under refrigeration working condition - Google Patents

Control method of air conditioner under refrigeration working condition Download PDF

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Publication number
CN112050384A
CN112050384A CN201910492034.XA CN201910492034A CN112050384A CN 112050384 A CN112050384 A CN 112050384A CN 201910492034 A CN201910492034 A CN 201910492034A CN 112050384 A CN112050384 A CN 112050384A
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air conditioner
compressor
time
frequency
starting
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CN112050384B (en
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罗荣邦
许文明
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • 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
    • F24F2110/20—Humidity
    • 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)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention belongs to the field of air conditioners, and particularly provides a control method of an air conditioner under a refrigeration working condition. The invention aims to solve the problem that the air conditioner cannot accurately balance the indoor humidity and the indoor temperature in the process of advanced refrigeration, and the control method comprises the following steps: when the predicted time point is reached, calculating the probability score of the air conditioner starting; when the probability score is larger than a set threshold value and the early opening time is reached, acquiring the actual temperature T and the actual humidity RH in the room; comparing T with the habitual temperature TsOf RH and the customary humidity RHsThe size of (d); an operating frequency of the compressor is selectively determined and the compressor is controlled to initiate operation at the operating frequency. Through the mode, the main task of confirming the air conditioner is dehumidification, still refrigerate, confirm the frequency of compressor, make the air conditioner can compromise indoor temperature and humidity, before the user opens the air conditioner, the indoor humiture of balanced, also make the air conditioner can judge whether to open according to the user's situation of going home.

Description

Control method of air conditioner under refrigeration working condition
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides a control method of an air conditioner under a refrigeration working condition.
Background
Air conditioners are widely used in daily life. In hot summer, the user starts the air conditioner after arriving at home in actual use, and can reach the comfortable environment appointed by the user only by carrying out a long temperature-adjusting waiting stage. In the prior art, a control method for an air conditioner can change the indoor temperature in advance by cooling in advance, or change the indoor humidity by dehumidifying in advance, so that the waiting time of a user is saved.
However, since the advance refrigeration and the advance dehumidification are both performed based on the refrigeration principle, the change of the indoor humidity may be accompanied in the advance refrigeration process, and correspondingly, the change of the indoor temperature may also be accompanied in the advance dehumidification process, and since there is no suitable control method to balance the refrigeration and dehumidification forces, only one index is adjusted and then another index is adjusted, the situation that the indoor temperature is normal but the humidity is too low or the situation that the humidity is suitable but the indoor temperature is too low or too high may often occur in the advance refrigeration process.
Accordingly, there is a need in the art for a new method for controlling an air conditioner under a cooling condition to solve the problem that the existing air conditioner cannot accurately balance the indoor humidity and the indoor temperature during the early cooling process.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the existing air conditioner cannot accurately balance the indoor humidity and the indoor temperature in the process of advanced refrigeration, the present invention provides a control method of an air conditioner under a refrigeration condition, wherein the air conditioner comprises a compressor, an indoor heat exchanger, an indoor fan, an outdoor heat exchanger and an outdoor fan, and the control method comprises:
when the predicted time point is reached, calculating the probability score of the air conditioner starting at the next early starting time based on a pre-established scoring system;
when the probability score is larger than a set threshold and the early opening time is reached, acquiring the actual temperature T and the actual humidity RH in the room;
based on the user habit information, comparing the actual temperature T with the habit temperature TsAnd the actual humidity RH and the customary humidity RHsThe size of (d);
selectively determining an operating frequency of the compressor based on the comparison result, and controlling the compressor to start operation at the operating frequency so as to enable the air conditioner to refrigerate in advance and/or dehumidify in advance;
the scoring system is used for representing the corresponding relation between historical operation information and historical prediction information of the air conditioner and the probability score of the air conditioner for starting the air conditioner at the next early starting moment.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, the step of selectively determining the operating frequency of the compressor based on the comparison result and controlling the compressor to start operating at the operating frequency further includes:
when T > TsAnd RH > RHsWhen the temperature is high, the compressor is controlled to be started and is increased to the refrigeration and dehumidification frequency faAnd (5) operating.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, the step of selectively determining the operating frequency of the compressor based on the comparison result and controlling the compressor to start operating at the operating frequency further includes:
when T > TsAnd RH is less than or equal to RHsWhen the compressor is started, the compressor is controlled to be started and the frequency is increased to the systemCold frequency fbAnd (5) operating.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, the step of selectively determining the operating frequency of the compressor based on the comparison result and controlling the compressor to start operating at the operating frequency further includes:
when T is less than or equal to TsAnd RH > RHsWhen the dehumidification frequency is higher than the predetermined frequency, the compressor is controlled to be started and is increased to the dehumidification frequency fcAnd (5) operating.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, the step of selectively determining the operating frequency of the compressor based on the comparison result and controlling the compressor to start operating at the operating frequency further includes:
when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to keep closed.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, after the step of selectively determining the operating frequency of the compressor based on the comparison result and controlling the compressor to start operating at the operating frequency, the control method further includes:
interval time interval t1Then, acquiring the actual temperature T and the actual humidity RH in the room again;
comparing the actual temperature T with the customary temperature TsAnd the actual humidity RH and the customary humidity RHsThe size of (d);
based on the comparison result, the operating frequency of the compressor is re-determined and the compressor is controlled to operate at the operating frequency.
In a preferred embodiment of the control method of the air conditioner under the cooling condition, the step of "re-determining the operating frequency of the compressor and controlling the compressor to operate at the operating frequency based on the comparison result" further includes:
when T > TsAnd RH > RHsWhile controlling the compressor to refrigerate and dehumidify at a frequency faRunning;
when T >TsAnd RH is less than or equal to RHsWhile controlling the compressor to cool at a cooling frequency fbRunning;
when T is less than or equal to TsAnd RH > RHsWhile controlling the compressor to dehumidify the frequency fcRunning;
when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to keep closed.
In a preferable technical solution of the control method of the air conditioner under the above-mentioned refrigeration condition, the control method further includes:
every t2And updating the user habit information.
In a preferred technical solution of the control method of the air conditioner under the above-mentioned refrigeration condition, the step of "calculating a probability score that the air conditioner is turned on at the next advanced turning-on time based on a pre-established scoring system" further includes:
inputting the next early starting time into a pre-trained air conditioner starting probability model to obtain the historical starting probability of the air conditioner starting at the next early starting time;
obtaining the recent opening probability based on the number of days for opening the air conditioner at the next early opening time within the set number of days;
obtaining historical prediction accuracy of the next early opening moment based on the historical prediction information;
calculating a probability score for the air conditioner to turn on at the next early turn-on time based on the historical turn-on probability, the recent turn-on probability, and the historical prediction accuracy;
the air conditioner starting probability model is used for representing the corresponding relation between the historical operation information and the historical starting probability.
In a preferable technical solution of the control method of the air conditioner under the above-mentioned refrigeration condition, the control method further includes:
judging the activity of the air conditioner based on the historical operation information of the air conditioner;
when the activity of the air conditioner is high, counting the running times of the air conditioner in a plurality of running time periods within a set number of days;
selecting a plurality of operation time periods with operation times larger than the set times from the plurality of operation time periods;
respectively calculating the average value of the starting time when all the air conditioners are started in advance in each selected operation time period as the advanced starting time of the operation time period;
and calculating the difference value of each advanced opening time and a preset time period as a predicted time point of the advanced opening time.
As can be understood by those skilled in the art, in the technical solution of the present invention, an air conditioner includes a compressor, an indoor heat exchanger and an indoor fan, and an outdoor heat exchanger and an outdoor fan, and a control method includes: when the predicted time point is reached, calculating the probability score of the air conditioner starting at the next early starting time based on a pre-established scoring system; when the probability score is larger than a set threshold value and the early opening time is reached, acquiring the actual temperature T and the actual humidity RH in the room; comparing the actual temperature T with the habit temperature T based on the habit information of the usersThe actual humidity RH and the customary humidity RHsThe size of (d); based on the comparison result, the operation frequency of the compressor is selectively determined, and the compressor is controlled to start operation at the operation frequency, so that the air conditioner performs early refrigeration and/or early dehumidification.
Through the arrangement mode, the control method can control the humidity through the actual temperature T, the actual humidity RH and the habitual temperature TsAnd the customary humidity RHsThe main task of the air conditioner is to dehumidify or refrigerate or to dehumidify and refrigerate at the same time, neither dehumidify nor refrigerate, based on which, the frequency value of the compressor of the air conditioner can be determined when dehumidification and/or refrigeration is needed, thus the air conditioner can give consideration to indoor temperature and humidity adjustment, and before the user arrives at home, the values of indoor humidity and indoor humidity can be accurately balanced, so that the indoor air conditioner can achieve early refrigeration and/or early dehumidification. Before the indoor humiture of detection, newly-increased system of marking has avoided nearly coming home at the user recentlyWhen the rate is not high, the system is still started every day, so that the energy is wasted.
Drawings
The control method of the air conditioner in the cooling operation according to the present invention will be described with reference to the accompanying drawings. In the drawings:
fig. 1 is a flowchart of a control method of an air conditioner under a refrigeration condition according to a first embodiment of the present invention;
fig. 2 is a logic diagram of a control method of an air conditioner under a cooling condition according to a first embodiment of the present invention.
FIG. 3 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a third embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a fourth embodiment of the present invention;
FIG. 6 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a fifth embodiment of the present invention;
fig. 7 is a schematic diagram of a scoring system according to a fifth embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although T ≦ T is used in the descriptionsAnd RH is less than or equal to RHsIn the present invention, it is obvious that the compressor can be controlled to continue operating in a low frequency state to maintain the indoor temperature and humidity, rather than only the option of turning off the compressor.
Example one
Referring first to fig. 1, a method for controlling an air conditioner in a cooling operation according to the present invention will be described. Fig. 1 is a flowchart illustrating a control method of an air conditioner according to the present invention under a cooling condition.
As shown in fig. 1, in order to solve the problem that the prior air conditioner cannot accurately balance the indoor humidity and the indoor temperature in the process of early cooling, the air conditioner of the invention comprises a compressor, an indoor heat exchanger, an indoor fan, an outdoor heat exchanger and an outdoor fan, and the control method comprises the following steps:
and S100, acquiring the actual temperature T and the actual humidity RH in the room when the air conditioner is in a stop state.
For example, the actual temperature and humidity in the room can be detected by a detection module arranged in the air conditioner, for example, a temperature sensor and a humidity sensor are respectively used for detecting the actual temperature and humidity in the room.
S200, comparing the actual temperature T with the habit temperature T based on the habit information of the usersThe actual humidity RH and the customary humidity RHsThe size of (2).
By comparing the actual temperature T with the customary temperature TsAnd actual humidity RH and customary humidity RHsCan determine the indoor environment condition, and judge whether the indoor needs dehumidification or cooling, or both needs, thereby making a judgment for controlling the value of the air conditioner compressor.
And S300, selectively determining the operating frequency of the compressor based on the comparison result, and controlling the compressor to start operation at the operating frequency so as to enable the air conditioner to refrigerate in advance and/or dehumidify in advance.
Through actual temperature T, actual humidity RH and habitual temperature TsAnd the customary humidity RHsThe main task of the air conditioner is to dehumidify, refrigerate, or dehumidify and refrigerate at the same time, namely not dehumidify nor refrigerate at the same time, on the basis of this, can determine the frequency value of the compressor of the air conditioner, thus make the air conditioner can compromise the indoor temperature and humidity to regulate, before users arrive and open the air conditioner at home, can balance the indoor humidity and numerical value of the indoor humidity accurately, make the indoor reach and refrigerate in advance and/or dehumidify in advance.
The control method of the present invention is described in detail below with further reference to fig. 1 and 2.
As shown in fig. 1 and 2, in one possible embodiment, the step S300 of "selectively determining an operation frequency of the compressor based on the comparison result, and controlling the compressor to start operation at the operation frequency" further includes:
when T > TsAnd RH > RHsWhen the compressor is started, the frequency is increased to the refrigerating and dehumidifying frequency faAnd (5) operating.
When T > TsAnd RH is less than or equal to RHsWhen the compressor is started, the compressor is controlled to be started and is increased to the refrigerating frequency fbRunning;
when T is less than or equal to TsAnd RH > RHsAt first, the compressor is controlled to start and frequency up to the dehumidification frequency fcRunning;
when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to be kept closed.
Wherein f isaFrequency of compressor for air conditioner when both advance cooling and advance dehumidification are needed, fbFrequency of compressor for air conditioner when advance refrigeration is required, fcThe frequency of the compressor when the air conditioner needs to dehumidify in advance.
It should be noted that the frequency at which the compressor is required to operate is different under different conditions, e.g. if only refrigeration is required, the compressor is controlled to fbOperation, only dehumidification is required, then the compressor needs to be controlled to fcOperation, wherein the frequency of the compressor required for dehumidification is greater than that of refrigeration, the refrigeration is the heat exchange efficiency of the indoor heat exchanger, the dehumidification is that the temperature value of the indoor heat exchanger is low enough, therefore, the requirements of the two are not completely the same, and if the dehumidification and the refrigeration are required, the operation frequency f of the compressor isaAnd f abovebAnd fcAre all different, preferably faWhile being larger than fbAnd fc。
The setting mode has the advantages that: comparing the actual temperature T with the customary temperature TsThe actual humidity RH and the customary humidity RHsThe total of four results, respectively, are:
(1)T＞Tsand RH > RHsWhen the indoor temperature is high and the indoor temperature is humid, dehumidification and refrigeration are needed, the frequency of the compressor needs to be adjusted to faThe temperature can be reduced and the humidity can be greatly reduced by adapting the conditions of refrigeration and dehumidification. f. ofaThe specific determination of (2) is also related to the indoor temperature and the indoor humidity, and can be obtained through calculation, or through empirical table query and the like.
(2)T＞TsAnd RH is less than or equal to RHsWhen the indoor temperature is high, but dehumidification is not required, the frequency of the compressor is adjusted to f accordinglybThe temperature can be reduced by adapting the conditions that only refrigeration is needed and dehumidification is not needed, and the value of the humidity is not changed as much as possible. f. ofbThe specific determination of (2) is also related to the indoor temperature and the indoor humidity, and can be obtained through calculation, or through empirical table query and the like.
(3)T≤TsAnd RH > RHsWhen the indoor temperature has reached the user's requirement, but the room is somewhat humid, the frequency of the compressor is adjusted to f accordinglycThe indoor temperature can be ensured not to continuously decrease as much as possible while dehumidification is carried out under the condition that refrigeration is not needed and only dehumidification is needed by adaptation. f. ofcThe specific determination of (2) is also related to the indoor temperature and the indoor humidity, and can be obtained through calculation, or through empirical table query and the like.
(4)T≤TsAnd RH is less than or equal to RHsAnd at the moment, the indoor temperature and humidity meet the requirements of users, so that the air conditioner can be directly controlled to stop running without refrigerating in advance and/or dehumidifying in advance.
In a possible implementation manner, after step S300, the method may further include: interval time interval t1Then, acquiring the actual temperature T and the actual humidity RH in the room again; comparing the actual temperature T with the customary temperature TsIs large or small, andactual humidity RH and customary humidity RHsThe size of (d); based on the comparison result, the operating frequency of the compressor is re-determined and the compressor is controlled to operate at the operating frequency.
Wherein the "re-determining the operating frequency of the compressor and controlling the compressor to operate at the operating frequency based on the comparison result" may still follow the previous determination manner, i.e., when T > TsAnd RH > RHsWhile controlling the compressor to refrigerate and dehumidify at a frequency faRunning; when T > TsAnd RH is less than or equal to RHsWhile controlling the compressor to cool at a cooling frequency fbRunning; when T is less than or equal to TsAnd RH > RHsWhile controlling the compressor to dehumidify the frequency fcRunning; when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to keep closed.
The setting mode has the advantages that: in general, during the process of adjusting the indoor temperature, the actual temperature T and the actual humidity RH in the room are also changed, and at this time, the changed actual temperature T and the changed actual humidity RH may be set at intervals of T1The time interval is judged again, and the frequency of the compressor is reselected, so that the indoor temperature and humidity regulation is more accurate.
In a possible implementation manner, after step S300, the method may further include: detecting outdoor ambient temperature Tao(ii) a Based on the outdoor ambient temperature TaoAnd compensating the running frequency of the compressor.
The setting mode has the advantages that: generally, the outdoor temperature has a great influence on the operation of the air conditioner, and if the difference between the habitual temperature and humidity of the user and the outdoor temperature is great, it is obvious that the larger the difference is, the more the air conditioner wants to reduce the difference, the higher the energy consumption of the required compressor is, and the higher the frequency of the required compressor is. Accordingly, the inventors propose to pass the outdoor ambient temperature TaoThe running frequency of the compressor is compensated, so that the selection of the frequency of the compressor is more reasonable, and a user can obtain better use experience. The compensation method can be theoretical calculation or empirical table, for example, when the outdoor ambient temperature is higher, the pressure is correspondingly increasedCompressor frequency, when outdoor ambient temperature is lower, compressor frequency is reduced accordingly, and the like.
In particular, by the outdoor ambient temperature TaoThe method for compensating the operating frequency of the compressor can also be implemented by performing the compensation in sections according to the difference of the outdoor environment temperature, for example, the compressor frequency is f when the outdoor environment temperature is 30 to 34 DEG C1The compensation value is 0, and the compressor frequency may be f at 34 to 36 DEG C1+f2At 26 to 30 ℃, the compressor frequency may be f1-f3By analogy, compensation values 0, f under different outdoor environments can be obtained2，-f3And so on.
In one possible embodiment, the habit information of the user in step S200 may be also be every t2The time is updated once.
The setting mode has the advantages that: since the habitual temperature and the habitual humidity of a user are different throughout the year, for example, the habitual temperature of an indoor user is about 25 ℃ in summer and about 21 ℃ in winter, and the habitual temperature and the habitual humidity of the user may also change according to the time, t2The time is updated once, so that the use habit of the user can be better fitted.
In summary, the control method of the present invention can utilize the actual temperature T, the actual humidity RH and the habitual temperature TsAnd the customary humidity RHsThe main task of the air conditioner is to dehumidify, refrigerate, or dehumidify and refrigerate at the same time, namely not dehumidify nor refrigerate at the same time, on the basis of this, can determine the frequency value of the compressor of the air conditioner, thus make the air conditioner can compromise the indoor temperature and humidity regulation, before the user opens the air conditioner, can balance the indoor humidity and numerical value of the indoor humidity accurately, make the indoor reach and refrigerate in advance and/or dehumidify in advance. By updating the habit information of the user, the use habits of the user can be better fitted. By the outdoor ambient temperature TaoThe frequency of the compressor is compensated, and the control can be more accurate.
It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can modify the above-mentioned structure so that the present invention can be applied to more specific application scenarios without departing from the principle of the present invention.
For example, in an alternative embodiment, although the description is made with T ≦ TsAnd RH is less than or equal to RHsThe compressor is controlled to keep the closed state for the example, however, the indoor temperature and humidity are changed again along with the time, the invention obviously can control the compressor to continue to operate in the low operation state to maintain the indoor temperature and humidity, and the invention does not relate to the selection of only closing the compressor, which does not deviate from the principle of the invention, therefore, the invention falls into the protection scope of the invention.
Although the foregoing embodiments describe the steps in the above sequential order, those skilled in the art will understand that, in order to achieve the effect of the present embodiments, the steps may not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverse order, and these simple variations are within the scope of the present invention.
In the first embodiment, how to control the air conditioner is mainly described, so that a user can keep a relatively comfortable and balanced temperature and humidity in a room after going home from work. However, the air conditioning system is not suitable for being always turned on, the indoor temperature and humidity can be adjusted all the time, the electric energy can be more efficiently utilized only when the air conditioning system is turned on for a period of time before a user is about to arrive at home, the energy waste is prevented, and particularly, the temperature needs to be accurately controlled due to high power consumption.
In the prior art, a user usually sets a preset starting time, such as 6:00 pm, and an air conditioner sets a fixed air conditioning time, such as 30min, of indoor temperature and humidity, so as to determine an advanced starting time, and if the preset starting time is 6:00 pm and the fixed air conditioning time is 30min, the advanced starting time is 5:30 pm.
However, the preset starting time of the user is not 6:00 every time, that is, the user is not 6:00 home every time, so that the situation that the user is started in advance, energy is wasted, the user is started after the user is delayed, and the user experience is poor may be caused. In addition, within a fixed air conditioning time of 30min, if the external environment is not referred to, the adjustment cannot be completed at every time, and further misjudgment is made on the early opening time, which may also cause energy waste or poor user experience.
How to accurately determine the preset starting time and how to ensure the fixed air conditioning time, and how to ensure the accuracy of the early starting time through the preset starting time and the fixed air conditioning time are emphasized in the second embodiment to the fourth embodiment.
Example two
In order to solve the problem that the preset startup time and the air conditioning time are not accurate enough in the prior art, the compensation for the preset startup time and the air conditioning time is added before the step S100 in the first embodiment of the present invention.
Referring to fig. 3, in which fig. 3 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a second embodiment of the present invention.
As shown in fig. 3, in a preferred embodiment, the method for controlling an air conditioner further includes:
and S110, acquiring the preset starting time and the outdoor environment temperature of the air conditioner.
The preset starting time in this embodiment may be a starting time actively set by a user, or a starting time statistically obtained based on a historical starting time of the air conditioner. For example, the preset starting time may be a starting time set by a user through a remote controller, a mobile phone APP, or a starting time obtained by a controller of the air conditioner or a cloud server through statistics according to a historical actual starting time of the air conditioner, for example, an average value of historical actual starting times obtained through statistical calculation of the historical actual starting time of the air conditioner by using statistical methods, probability theory calculation, and other methods is used as the preset starting time of the air conditioner. The following explains the control method by taking the cloud server as an example to perform statistical calculation.
And S111, correcting the preset starting-up time based on the time correction parameter.
The time correction parameter is used to represent a corresponding relationship between the preset startup time and the actual startup time, that is, a deviation between the preset startup time and the actual startup time, which is set or calculated by a user. After the preset starting time is set by a user or calculated by the air conditioner, the starting time is corrected based on the time correction parameter, and if the preset starting time is corrected by increasing or decreasing a time period on the basis of the determined preset starting time, the corrected preset starting time can be closer to the real starting time of the user. For example, if the preset power-on time is 18:00 and the time correction parameter is +10min, the corrected preset power-on time is 18:00+10min, which is 18: 10.
In a preferred embodiment, the time correction parameter is determined during the last operation of the air conditioner. Specifically, when the air conditioner receives a start-up instruction for the last time, if the air conditioner receives the start-up instruction in the same time period of the previous day or the same time period of the previous days, the current actual start-up time is recorded first, then the historical preset start-up time and the historical actual start-up time in the set days before (including this time) this time are counted, and the average value of the historical preset start-up time and the average value of the historical actual start-up time in the set days are calculated respectively. And then calculating a first difference value between the average value of the historical actual starting-up time and the average value of the historical preset starting-up time, and storing the first difference value as a time correction parameter for the next correction of the preset starting-up time.
For example, the cloud server counts historical preset starting-up time and historical actual starting-up time of the air conditioner in the same period (e.g., 18:00-19:00) of the past 7 days including this time, and calculates a mean value of all historical preset starting-up time and a mean value of all historical actual starting-up time, if the mean value of the historical preset starting-up time is calculated to be 18:30 and the mean value of the historical actual starting-up time is calculated to be 18:40, then the first difference is equal to 18:40-18: 30-10 min, that is, the time correction parameter is 10min, that is, in the past 7 days, the actual starting-up time of the user is 10min later than the preset starting-up time on average. Therefore, when the preset starting-up time is estimated next time, the sum of the estimated preset starting-up time and the time correction parameter is calculated to serve as the corrected preset starting-up time, and therefore the estimation accuracy of the preset starting-up time is improved, energy waste is reduced, and user experience is improved. Of course, the time correction parameter in the above example is described as a positive number, and the same holds true for the present control method if the time correction parameter obtained is a negative number. If the time correction parameter is-10 min, the actual starting time of the user in the past 7 days is 10min earlier than the preset starting time on average, and therefore when the preset starting time is estimated next time, the estimation accuracy of the preset starting time can be improved by calculating the sum of the preset starting time and the time correction parameter, namely subtracting 10min from the preset starting time to serve as the corrected preset starting time.
And S112, determining air conditioning time based on the outdoor environment temperature.
Acquiring the outdoor environment temperature of the position of the air conditioner at the same time, before or after the preset starting time of the air conditioner is acquired, for example, acquiring the outdoor environment temperature through a temperature sensor and the like arranged on an outdoor unit; then, based on the outdoor environment temperature, the air conditioning time is determined, and if the outdoor environment temperature is determined, the cloud server calculates the air conditioning time matched with the outdoor environment temperature based on the outdoor environment temperature.
Preferably, the air-conditioning time may be calculated based on a fitting formula between the outdoor ambient temperature and the air-conditioning time. For example, the air conditioning time is calculated using the following formula (1):
t＝k×Tao+b (1)
in equation (1), t represents the air conditioning time, Tao is the outdoor ambient temperature, and k and b are constants that can be fit based on experimental data. For example, a plurality of control experiments are performed for different outdoor ambient temperatures and air conditioning times, thereby establishing a linear relationship of the air conditioning time and the outdoor ambient temperature.
Of course, the determination of the air-conditioning time may also be performed based on other relationships between the outdoor ambient temperature and the air-conditioning time, such as the determination based on the fixed corresponding relationship between the outdoor ambient temperature and the air-conditioning time. If a comparison table of the outdoor ambient temperature and the air conditioning time is determined based on the air conditioning test, the air conditioning time determined by the outdoor ambient temperature is determined by using the comparison table.
It should be noted that, here, the outdoor ambient temperature is compensated for the total time period that the air conditioner needs to operate when the indoor environment is adjusted, i.e. the air conditioning time, and the compensation mentioned in the first embodiment regarding the outdoor ambient temperature to the frequency of the compressor is compensated for during the operation of the air conditioner. After the total time length is compensated and determined, the compensation is finished, and according to the air conditioning time determined after the compensation, it is determined that f is selecteda,fbOr fcAnd compensating the three compressor frequencies through the outdoor temperature to obtain a compensated compression frequency. In summary, one is to compensate the total duration, so that the setting of the total duration is more reasonable; one is to compensate the compression frequency in the working process, so that the frequency of the compressor is more reasonable, and the air conditioner can better complete air conditioning in the total time.
The setting mode has the advantages that: since different outdoor ambient temperatures have a great influence on the air conditioning capacity of the air conditioner, the accuracy of the air conditioning time can be ensured and the energy is prevented from being excessively wasted by determining the air conditioning time by using a fitting formula or a corresponding relationship between the outdoor ambient temperature and the air conditioning time.
S113, determining an advanced starting time based on the air conditioning time and the corrected preset starting time;
calculating the early starting time of the air conditioner based on the corrected preset starting time and the air conditioning time compensated by the outdoor environment temperature; after the preset on time is corrected, the turn-on timing of the air conditioning mode may be determined based on the air conditioning time. For example, if the air conditioning time of the air conditioner is 5min, the advanced start-up time is 18:05 when the corrected preset start-up time is 18: 10.
And S114, when the early opening time is reached, opening the step S100.
And when the time reaches the opening-in-advance time, controlling the air conditioner to regulate the indoor temperature and humidity.
According to the control method of the air conditioner, the preset starting time can be corrected based on the time correction parameter, and the accuracy of time estimation is improved. Specifically, the preset starting-up time is corrected based on the time correction parameter, and the control method can correct the preset starting-up time based on the starting-up habit of the user, so that the corrected preset starting-up time is closer to the real starting-up time of the user, the accurate and personalized treatment for a single user is realized, and the user experience is improved. In addition, the air conditioning time is determined based on the outdoor environment temperature, and because different outdoor environment temperatures have great influence on the air conditioning capacity of the air conditioner, the air conditioning time is determined by utilizing a fitting formula or a corresponding relation between the outdoor environment temperature and the air conditioning time, so that the accuracy of the air conditioning time is further ensured, and the energy is prevented from being excessively wasted.
EXAMPLE III
Embodiment three of the present invention is based on embodiment two, and the step of determining the air-conditioning time based on the outdoor ambient temperature is removed, and a fixed air-conditioning time is directly specified. Because, as long as the compressor frequency is properly chosen, it is guaranteed that the regulation can be completed within a fixed air-conditioning time each time. However, the air conditioning time of the second embodiment has a certain error, and therefore the finally determined advanced opening timing has a certain error, but the error is within an acceptable range.
Referring to fig. 4, in a specific embodiment, fig. 4 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a third embodiment of the present invention.
As shown in fig. 4, in one possible embodiment, the method for controlling an air conditioner further includes:
s120, acquiring a preset starting time of the air conditioner;
s121, correcting the preset starting-up time based on the time correction parameter;
s122, determining an advanced starting time based on the preset air conditioning time and the corrected preset starting time;
and S123, when the early opening time is reached, opening the step S100.
Example four
In the fourth embodiment of the present invention, on the basis of the second embodiment, the step of correcting the preset startup time based on the time correction parameter is eliminated. Correspondingly, however, since the fourth embodiment lacks a step of correcting the preset boot-up time, there is a certain error with respect to the second embodiment, but the error is within an acceptable range.
Referring to fig. 5, in a specific embodiment, fig. 5 is a flowchart of a control method of an air conditioner under a cooling condition according to a fourth embodiment of the present invention.
As shown in fig. 5, in one possible embodiment, the method for controlling an air conditioner further includes:
s130, acquiring a preset starting time and an outdoor environment temperature of the air conditioner;
s131, determining air conditioning time based on the outdoor environment temperature;
s132, determining an early starting time based on the air conditioning time and a preset starting time;
and S133, starting the step S100 when the early starting time is reached.
In the second to fourth embodiments, we all start the air conditioner in advance, and then optimize the time of the start in advance in various ways, but if the user has irregular life in a period of time, for example, the user frequently goes on a business trip, or if the time of returning home is unstable due to frequent overtime, it needs to be determined whether to start the step S100 to regulate the indoor air. In view of the above problem, a fifth embodiment of the present invention provides a determination method to determine whether to start the step S100.
EXAMPLE five
In order to solve the problem that the air conditioner cannot autonomously judge whether to adjust the indoor air when the life of a user is irregular, the step of predicting whether to start the air conditioner is added before the step of S100.
Fig. 6 and 7 show specific embodiments, where fig. 6 is a flowchart illustrating a control method of an air conditioner under a cooling condition according to a fifth embodiment of the present invention, and fig. 7 is a schematic diagram illustrating a scoring system according to the fifth embodiment of the present invention.
As shown in fig. 6, in a preferred embodiment, the method for controlling an air conditioner further includes:
and S141, when the predicted time point is reached, calculating the probability score of the air conditioner starting at the current early starting time based on a pre-established scoring system.
The scoring system is used for representing the corresponding relation between historical operation information and historical prediction information of the air conditioner and the probability score of the air conditioner starting at the next early starting moment. The advanced opening time is the same as in the above-described embodiments two to four, the predicted time point is a certain time point before the advanced opening time, the advanced opening time is 19:00, and the predicted time point may be 1 hour before 19:00, that is, 18: 00.
The cloud server calls a pre-established scoring system to calculate the probability score of the air conditioner being started in advance at 19:00, namely the probability of the air conditioner being started in advance at 19: 00. The scoring system is used for representing the corresponding relation between historical operation information and historical prediction information of the air conditioner and the probability score of the air conditioner for starting the air conditioner at the next early starting moment, namely after 19:00 is input into the scoring system, the scoring system can calculate the probability of starting the air conditioner in advance at the time point based on the historical operation information and the historical prediction information of the air conditioner.
In a preferred embodiment, step S141 may further include: inputting the next early opening time into a pre-trained air conditioner opening probability model to obtain the historical opening probability of the air conditioner for opening the air conditioner at the next early opening time; obtaining the recent starting probability based on the number of days for starting the air conditioner at the next advanced starting time within the set number of days; obtaining historical prediction accuracy of the next early opening moment based on historical prediction information; calculating the probability score of the air conditioner for starting the air conditioner at the next early starting moment based on the historical starting probability, the recent starting probability and the historical prediction accuracy; the air conditioner starting probability model is used for representing the corresponding relation between the historical operation information and the historical starting probability. Specifically, as shown in fig. 7, in the present embodiment, after the early start time is input into the scoring system, the score calculated by the scoring system is derived from three parts, the first part is the historical start frequency calculated based on the trained air conditioner start probability model; the second part is a recent opening probability obtained based on the number of times of opening within a set number of days at the early opening time; the third part is history prediction accuracy of the early opening time obtained based on history prediction information; the probability score can be weighted values of historical opening probability, recent opening probability and historical prediction accuracy, and the weights of the three parts in the scoring system can be 70 points, 15 points and 15 points respectively.
In the first part, the process of establishing the air conditioner starting probability model may specifically be: and establishing a model by taking the historical air conditioner starting time in advance, the starting times corresponding to the air conditioner starting time and the total operation days of the air conditioner as characteristic data to obtain the corresponding relation between the historical air conditioner starting time in advance and the historical starting probability, and inputting the advanced starting time into the model so as to output the historical starting probability corresponding to the advanced starting time. In the second part, the set number of days may be the last 7 days, the recent opening probability of the last 7 days with the number of opening days increased by 1 day is increased by 20%, and when the number of opening days is more than 5 days, the recent opening probability is 100%. In the third part, the historical prediction information may be a ratio of a predicted correct number to a predicted total number in the historical prediction of the early opening time.
For example, after the next early starting time is 19:00 and is input into the scoring system, the historical starting probability of the starting air conditioner at the starting time is calculated by the probability model of starting the air conditioner to be 80 percent; if the number of opening days in nearly 7 days is 4 days, the recent opening probability is 80 percent; the correct number of predictions at the early opening time of 19:00 is 7 times, the total number is 10 times, namely the prediction accuracy is 70%; from this, the three probabilities are multiplied by their weights, respectively, and summed to obtain a probability score P of 80% × 70+ 80% × 15+ 70% × 15 of 78.5.
And S142, when the probability score is larger than the set threshold and the early opening time is reached, the step S100 is carried out.
For example, on the premise of a full score of 100, the scoring system calculates the probability score of turning on the air conditioner in advance at 19:00 to be 80 minutes at 18:00 (namely, the probability of turning on the air conditioner in advance is 80%), which proves that a user is very likely to use the air conditioner after 19:00, and at the moment, when the moment of turning on in advance is reached, the cloud server issues an instruction of turning on the step S100, so that the air conditioner is turned on at 19:00 and starts to adjust the indoor temperature and humidity. For another example, the scoring system calculates that the probability score of turning on the air conditioner in advance is 50 points at 19:00, which proves that the user is most likely not to use the air conditioner after 19:00, and the cloud server controls the air conditioner not to turn on the step S100.
Further, in a preferred embodiment, the predicted time point may be determined based on the following method:
the predicted time point is selectively determined based on historical operation information of the air conditioner. Specifically, based on historical operation information of the air conditioner, judging the activity of the air conditioner; when the activity of the air conditioner is high, counting the operation times of the air conditioner in a plurality of operation time periods within set days; selecting a plurality of operation time periods with operation times larger than the set times from a plurality of operation time periods; respectively calculating the average value of the starting time when all the air conditioners are started in advance in each selected operation time period as the advanced starting time of the operation time period; and calculating the difference value of each advanced opening time and a preset time period as a predicted time point of the advanced opening time. For example, the activity of the air conditioner may be defined as whether there is a startup behavior in the past few days (e.g., the past 3 days), when there is a startup record in the past few days, the activity of the air conditioner is high, otherwise, the activity is low. When the activity degree is low, the user is proved to have less times of using the air conditioner, the probability of opening the air conditioner is lower, and whether the air conditioner is opened or not is not predicted at the moment. When the activity of the air conditioner is high, the fact that a user uses the air conditioner frequently is proved, habits and rules of using the air conditioner are easier to analyze, the operation times of the air conditioner in a plurality of operation periods within set days (such as within the last 7 days) are counted, for example, the operation times of the air conditioner in a plurality of operation periods are counted by 1 hour in an aggregation mode, then a plurality of periods with the operation times being more than 4 times within 7 days are selected from the plurality of operation periods, then the average value of all the startup moments within each period is respectively calculated to serve as the early startup moment of the operation period, and finally the time point obtained by subtracting 1 hour from each early startup moment is used as the predicted time point, if a certain early startup moment is 19:00, then 18:00 is the predicted time point of the early startup moment.
Through the control mode, the control method can improve the intelligent degree and the user experience of the air conditioner. Specifically, when the predicted time point is reached, the probability score of the air conditioner for starting the air conditioner at the next early starting time is calculated based on the scoring system, the control method can reasonably predict the probability of the air conditioner for starting the air conditioner at the next early starting time based on the historical information of the air conditioner used by a user, and therefore when the probability of starting the air conditioner is high, the air conditioner is started after the early starting time comes, the step S100 is controlled to be started, and indoor temperature and humidity are controlled to be balanced at the same time. In addition, the prediction process is completely and automatically completed, so that the control method can improve the intelligent degree of the air conditioner and improve the user experience.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A control method of an air conditioner under a refrigeration working condition, the air conditioner comprises a compressor, an indoor heat exchanger, an indoor fan, an outdoor heat exchanger and an outdoor fan, and is characterized in that the control method comprises the following steps:
when the predicted time point is reached, calculating the probability score of the air conditioner starting at the next early starting time based on a pre-established scoring system;
when the probability score is larger than a set threshold and the early opening time is reached, acquiring the actual temperature T and the actual humidity RH in the room;
based on the user habit information, comparing the actual temperature T with the habit temperature TsAnd the actual humidity RH and the customary humidity RHsThe size of (d);
selectively determining an operating frequency of the compressor based on the comparison result, and controlling the compressor to start operation at the operating frequency so as to enable the air conditioner to refrigerate in advance and/or dehumidify in advance;
the scoring system is used for representing the corresponding relation between historical operation information and historical prediction information of the air conditioner and the probability score of the air conditioner for starting the air conditioner at the next early starting moment.
2. The method as claimed in claim 1, wherein the step of selectively determining an operation frequency of the compressor based on the comparison result and controlling the compressor to start operation at the operation frequency further comprises:
when T > TsAnd RH > RHsWhen the temperature is high, the compressor is controlled to be started and is increased to the refrigeration and dehumidification frequency faAnd (5) operating.
3. The method as claimed in claim 1, wherein the step of selectively determining an operation frequency of the compressor based on the comparison result and controlling the compressor to start operation at the operation frequency further comprises:
when T > TsAnd RH is less than or equal to RHsWhen the frequency of the refrigerant reaches the refrigerating frequency f, the compressor is controlled to be started and is boosted to the refrigerating frequency fbAnd (5) operating.
4. The method as claimed in claim 1, wherein the step of selectively determining an operation frequency of the compressor based on the comparison result and controlling the compressor to start operation at the operation frequency further comprises:
when T is less than or equal to TsAnd RH > RHsWhen the dehumidification frequency is higher than the predetermined frequency, the compressor is controlled to be started and is increased to the dehumidification frequency fcAnd (5) operating.
5. The method as claimed in claim 1, wherein the step of selectively determining an operation frequency of the compressor based on the comparison result and controlling the compressor to start operation at the operation frequency further comprises:
when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to keep closed.
6. The method as claimed in claim 1, wherein after the step of selectively determining an operation frequency of the compressor based on the comparison result and controlling the compressor to start the operation at the operation frequency, the method further comprises:
interval time interval t1Then, acquiring the actual temperature T and the actual humidity RH in the room again;
comparing the actual temperature T with the customary temperature TsAnd the actual humidity RH and the customary humidity RHsThe size of (d);
based on the comparison result, the operating frequency of the compressor is re-determined and the compressor is controlled to operate at the operating frequency.
7. The method as claimed in claim 6, wherein the step of re-determining the operating frequency of the compressor and controlling the compressor to operate at the operating frequency based on the comparison result further comprises:
when T > TsAnd RH > RHsWhile controlling the compressor to refrigerate and dehumidify at a frequency faRunning;
when T > TsAnd RH is less than or equal to RHsWhile controlling the compressor to cool at a cooling frequency fbRunning;
when T is less than or equal to TsAnd RH > RHsWhile controlling the compressor to dehumidify the frequency fcRunning;
when T is less than or equal to TsAnd RH is less than or equal to RHsAnd when the compressor is controlled to keep closed.
8. The control method of the air conditioner under the refrigerating condition as claimed in claim 1, further comprising:
every t2And updating the user habit information.
9. The method as claimed in claim 1, wherein the step of calculating the probability score of the air conditioner turning on at the next early turn-on time based on a pre-established scoring system further comprises:
inputting the next early starting time into a pre-trained air conditioner starting probability model to obtain the historical starting probability of the air conditioner starting at the next early starting time;
obtaining the recent opening probability based on the number of days for opening the air conditioner at the next early opening time within the set number of days;
obtaining historical prediction accuracy of the next early opening moment based on the historical prediction information;
calculating a probability score for the air conditioner to turn on at the next early turn-on time based on the historical turn-on probability, the recent turn-on probability, and the historical prediction accuracy;
the air conditioner starting probability model is used for representing the corresponding relation between the historical operation information and the historical starting probability.
10. The control method of the air conditioner under the refrigerating condition as claimed in claim 1, further comprising:
judging the activity of the air conditioner based on the historical operation information of the air conditioner;
when the activity of the air conditioner is high, counting the running times of the air conditioner in a plurality of running time periods within a set number of days;
selecting a plurality of operation time periods with operation times larger than the set times from the plurality of operation time periods;
respectively calculating the average value of the starting time when all the air conditioners are started in advance in each selected operation time period as the advanced starting time of the operation time period;
and calculating the difference value of each advanced opening time and a preset time period as a predicted time point of the advanced opening time.
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