CN113218045A - Method for correcting compressor frequency control logic, air conditioner and storage medium - Google Patents
Method for correcting compressor frequency control logic, air conditioner and storage medium Download PDFInfo
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- CN113218045A CN113218045A CN202110511623.5A CN202110511623A CN113218045A CN 113218045 A CN113218045 A CN 113218045A CN 202110511623 A CN202110511623 A CN 202110511623A CN 113218045 A CN113218045 A CN 113218045A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Abstract
The invention discloses a method for correcting a compressor frequency control logic, an air conditioner and a storage medium, wherein the method for correcting the compressor frequency control logic comprises the following steps: controlling an air conditioner to operate an environmental load test mode, wherein actual environmental load test parameters are recorded; calculating a reference coefficient for correcting a compressor frequency control logic according to the actual environmental load test parameters; and obtaining a target compressor frequency control logic parameter according to the reference coefficient so as to correct the compressor frequency control logic. According to the method, when the actual working environment deviates from the standard working condition, the frequency control logic of the compressor can be corrected according to the obtained actual environment load test parameters, so that the air conditioner can be matched with the running load which is more in line with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method for correcting a compressor frequency control logic, an air conditioner, and a computer storage medium.
Background
In the related art, a compressor control scheme inside an air conditioner is set according to a standard working condition, and has certain adaptivity. However, when the actual working environment deviates from the standard working condition, the air conditioner cannot exert the optimal working state.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for correcting a compressor frequency control logic, which can correct the compressor frequency control logic according to the obtained actual environmental load test parameters when the actual working environment deviates from the standard working condition, so as to facilitate the air conditioner to match the operation load more conforming to the current environment, and improve the energy saving degree and the comfort level of the air conditioner.
The embodiment of the second aspect of the invention provides an air conditioner.
A third aspect of the present invention provides a computer storage medium.
In order to solve the above problem, a method for modifying a compressor frequency control logic according to an embodiment of the first aspect of the present invention includes: controlling an air conditioner to operate an environmental load test mode, wherein actual environmental load test parameters are recorded; calculating a reference coefficient for correcting a compressor frequency control logic according to the actual environmental load test parameters; and obtaining a target compressor frequency control logic parameter according to the reference coefficient so as to correct the compressor frequency control logic.
According to the method for correcting the frequency control logic of the compressor, the operation environment load test mode of the air conditioner is controlled, the actual environment load test parameters in the operation process of the air conditioner are monitored, and the reference coefficient of the frequency control logic of the compressor is corrected according to the actual environment load test parameters, so that when the actual working environment deviates from the standard working condition, the frequency control logic of the compressor can be corrected through the reference coefficient, the air conditioner is matched with the operation load which is more consistent with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In some embodiments, recording the actual environmental stress test parameters comprises: recording an initial indoor environment temperature of the environment load test mode, a first indoor environment temperature and an outdoor environment temperature of a first preset time after the environment load test mode is started; acquiring a second indoor environment temperature every other second preset time, determining the current time when the temperature difference between the second indoor environment temperature and the initial indoor environment temperature reaches a first temperature difference threshold, and recording the time interval from the time of starting the environment load test mode to the current time; recording the final indoor ambient temperature at the end of the environmental load test mode.
In some embodiments, calculating a reference coefficient for modifying compressor frequency control logic based on the actual environmental load test parameter comprises: acquiring a detection period reference coefficient according to an initial detection period for detecting the indoor environment temperature in the compressor frequency control logic under the time interval and the standard working condition; obtaining a first frequency adjustment reference coefficient according to the first indoor environment temperature and the initial indoor environment temperature, and obtaining a second frequency adjustment reference coefficient according to the final indoor environment temperature, the initial indoor environment temperature and the outdoor environment temperature.
In some embodiments, obtaining the detection period reference coefficient according to the time interval and an initial detection period of the compressor frequency control logic detecting the indoor environment temperature under the standard working condition comprises:
obtaining the detection period reference coefficient by the following formula:
K＝Δts/Δt；
and K is the reference coefficient of the detection period, K is less than or equal to 1, delta ts is a time interval, and delta t is the initial detection period.
In some embodiments, obtaining a target compressor frequency control logic parameter from the reference coefficient comprises: determining a target period threshold interval to which the detection period reference coefficient belongs; and acquiring a target detection period for acquiring the indoor environment temperature in the compressor frequency control logic according to the target period threshold interval, wherein the target detection period is in positive correlation with the detection period reference coefficient.
In some embodiments, obtaining a target detection period for acquiring an indoor ambient temperature in the compressor frequency control logic according to the target period threshold interval includes: if K1 is determined to be more than or equal to K and less than or equal to 1, keeping the detection period of the indoor environment temperature collected in the compressor frequency control logic unchanged; or determining that K is more than or equal to K2 and less than K1, and then the target detection period is delta t 1; alternatively, it is determined that K < K2, the target detection period is Δ t2, where Δ t2 <. DELTA t1 <. DELTA t.
In some embodiments, obtaining a first frequency adjustment reference coefficient from the first indoor ambient temperature and the initial indoor ambient temperature comprises:
the first intermediate parameter is obtained by the following formula:
M＝(T1-Ts)/ΔT1；
wherein M is the first intermediate parameter, T1 is the first indoor ambient temperature, Ts is the initial indoor ambient temperature, Δ T1 is a first predetermined temperature difference value;
obtaining the first frequency adjustment reference coefficient according to the first intermediate parameter, wherein the first frequency adjustment reference coefficient is inversely related to the first intermediate parameter.
In some embodiments, obtaining a second frequency adjustment reference coefficient from the final indoor ambient temperature, the initial indoor ambient temperature, and the outdoor ambient temperature comprises:
obtaining a temperature difference correction coefficient according to the outdoor environment temperature, wherein the temperature difference correction coefficient is in negative correlation with the outdoor environment temperature;
obtaining a second intermediate parameter according to the temperature difference correction coefficient, the final indoor environment temperature and the initial indoor environment temperature through the following formula:
L＝(Tz-Ts)/ΔT2；
ΔT2＝ΔT21*P；
wherein L is the second intermediate parameter, Tz is the final indoor environment temperature, Ts is the initial indoor environment temperature, Δ T21 is a second preset temperature difference value, and P is a temperature difference correction coefficient;
obtaining the second frequency adjustment reference coefficient according to the second intermediate parameter, wherein the second frequency adjustment reference coefficient is inversely related to the second intermediate parameter.
In some embodiments, controlling the air conditioner to operate in the environmental load test mode includes: starting the environmental load test mode; acquiring an outdoor environment temperature and an indoor environment temperature; determining that the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, and controlling the air conditioner to operate in a cooling mode, or determining that the outdoor environment temperature is less than a second preset temperature threshold value, and controlling the air conditioner to operate in a heating mode, wherein the first preset temperature threshold value is greater than the second preset temperature threshold value; controlling the compressor to operate at a preset target frequency; and if the change value of the indoor environment temperature is determined to be less than or equal to a third preset temperature difference value, controlling the air conditioner to exit the environment load test mode.
An embodiment of a second aspect of the present invention provides an air conditioner, including: at least one processor; a memory communicatively coupled to the at least one processor; wherein, the memory stores a computer program executable by at least one processor, and the at least one processor implements the method for modifying the compressor frequency control logic when executing the computer program.
According to the air conditioner provided by the embodiment of the invention, the method for correcting the compressor frequency control logic provided by the embodiment is adopted by the processor, and when the actual working environment deviates from the standard working condition, the compressor frequency control logic can be corrected according to the obtained actual environment load test parameters, so that the air conditioner can be matched with the running load which is more in line with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
A third embodiment of the present invention provides a computer storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for modifying the compressor frequency control logic according to the above embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method of modifying compressor frequency control logic according to one embodiment of the present invention;
FIG. 2 is a flow chart of a method of modifying compressor frequency control logic according to another embodiment of the present invention;
fig. 3 is a schematic structural view of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The air conditioner performs functions such as refrigeration/heating circulation or dehumidification through the compressor, the condenser, the expansion valve and the evaporator, can realize the regulation of the indoor environment, and improves the comfort of the indoor environment. The refrigeration cycle includes a series of processes, for example, involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas, the discharged refrigerant gas flows into a condenser, the condenser condenses the compressed refrigerant into a liquid state, and heat is released to the surrounding environment through a condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
In order to solve the problem that the air conditioner cannot exert the optimal working state when the actual working environment deviates from the standard working condition, the embodiment of the first aspect of the invention provides a method for correcting the frequency control logic of the compressor.
As shown in fig. 1, the method for modifying the frequency control logic of the compressor according to the embodiment of the present invention at least includes steps S1-S3, each of which is as follows.
And step S1, controlling the air conditioner to operate an environmental load test mode, wherein actual environmental load test parameters are recorded.
The environment load test mode is a mode for testing the operation load of the air conditioner in the current operation environment. The actual environmental load test parameters are environmental load characteristic parameters of the air conditioner in the actual working environment. The air conditioner can be used for matching the running load more conforming to the current running environment by referring to the load characteristic parameters in the running process of the environmental load test mode under other running modes by recording the actual environmental load test parameters.
In the embodiment, specific parameters of the working environment, such as the area, the height, the number of doors or the number of windows, etc., are generally fed back to the air conditioner by a user to fill in data, etc., but since the working environment has different maintenance structures and different area positions, etc., the characteristics of the actual operating environment of the air conditioner cannot be accurately reflected by only the above parameters. Based on this, the embodiment of the invention obtains the actual environmental load test parameters by controlling the air conditioner to operate the environmental load test mode, so that the air conditioner can pertinently correct the frequency control logic of the compressor according to the actual environmental load test parameters, and the air conditioner can exert the optimal working state in any environment.
In an embodiment, the air conditioner is configured with an environmental load test mode, after the air conditioner is started, the user can manually determine the air conditioner running environmental load test mode, and the air conditioner can also default the running environmental load test mode when the air conditioner is started. For example, when the user starts the air conditioner, the user manually selects the environmental load test mode according to the actual requirement; or when the user starts the air conditioner, the air conditioner does not receive the instruction of selecting the environmental load test mode, and the air conditioner operates the environmental load test mode by default. After the air conditioner enters the environmental load test mode, the built-in command can be automatically executed so as to record the actual environmental load test parameters.
During the operation environment load test mode of the air conditioner, a user can select whether to interrupt the mode through a shutdown key according to actual needs. And in order to avoid discomfort caused by running the environmental load test mode, the user can select to run the mode under the unmanned condition, and the mode can be automatically shut down after the mode is finished, so that the mode is set, and the user experience is improved.
And step S2, calculating a reference coefficient for correcting the frequency control logic of the compressor according to the actual environmental load test parameters.
In an embodiment, when the actual working environment deviates from the standard working condition, in order to enable the air conditioner to operate in the optimal working state in the environment, the controller calculates a reference coefficient for correcting the compressor frequency control logic according to the actual environmental load test parameters recorded when the air conditioner operates in the environmental load test mode, so that the air conditioner can correct the compressor frequency control logic according to the reference coefficient, and the air conditioner can be matched with the operating load more conforming to the current environment.
And step S3, obtaining a target compressor frequency control logic parameter according to the reference coefficient so as to modify the compressor frequency control logic.
The target compressor frequency control logic parameter can be understood as an operation parameter when the air conditioner operates in an optimal working state under the current actual working environment.
In the embodiment, the target compressor frequency control logic parameter which accords with the actual working environment is obtained according to the reference coefficient, and the compressor frequency control logic is corrected according to the target compressor frequency control logic parameter, so that the air conditioner runs by the corrected compressor frequency control logic, and therefore when the actual working environment deviates from the standard working condition, compared with the compressor frequency control logic under the standard working condition, the corrected compressor frequency control logic is more matched with the current actual working environment of the air conditioner, and the energy saving degree and the comfort degree of the air conditioner can be improved.
According to the method for correcting the frequency control logic of the compressor, the operation environment load test mode of the air conditioner is controlled, the actual environment load test parameters in the operation process of the air conditioner are monitored, and the reference coefficient of the frequency control logic of the compressor is corrected according to the actual environment load test parameters, so that when the actual working environment deviates from the standard working condition, the frequency control logic of the compressor can be corrected through the reference coefficient, the air conditioner is matched with the operation load which is more consistent with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In some embodiments, recording the actual environmental load test parameters may include recording an initial indoor environmental temperature at which the environmental load test mode is turned on, which may be, for example, Ts, a first indoor environmental temperature at a first preset time period after the environmental load test mode is turned on, which may be, for example, T1, and an outdoor environmental temperature, which may be, for example, Tw; acquiring a second indoor environment temperature every second preset time period, for example, recording the second indoor environment temperature as Td, determining the current time when the temperature difference between the second indoor environment temperature Td and the initial indoor environment temperature Ts reaches a first temperature difference threshold, for example, recording the time interval from the time of starting the environmental load test mode to the current time, for example, recording the time interval as Deltats, and thus, determining the lag time of the air conditioner for adjusting the temperature to be stable in the current operating environment; and recording the final indoor ambient temperature at the end of the environmental load test mode, which may be noted as Tz, for example. Therefore, the characteristics of the actual working environment of the air conditioner can be accurately reflected by recording the actual environment load test parameters, so that the air conditioner can conveniently correct the frequency control logic of the compressor according to the actual environment load test parameters during subsequent starting and running, and the air conditioner can favorably exert the optimal working state in any environment.
In some embodiments, an initial detection period for detecting the indoor ambient temperature in the compressor frequency control logic according to the time interval Δ ts and the standard working condition may be, for example, recorded as Δ t, and a detection period reference coefficient may be, for example, recorded as K, so that the air conditioner is matched with a detection period more suitable for monitoring the indoor ambient temperature in the current environment, and the energy saving degree of the air conditioner is improved; a first frequency adjustment reference coefficient, which may be obtained according to the first indoor ambient temperature T1 and the initial indoor ambient temperature Ts, may be recorded as N, for example, and a second frequency adjustment reference coefficient, which may be obtained according to the final indoor ambient temperature Tz, the initial indoor ambient temperature Ts, and the outdoor ambient temperature Tw, may be recorded as W, for example, so that the air conditioner matches a compressor frequency control logic that more conforms to the adjustment of the indoor ambient temperature in the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In some embodiments, the detection period reference coefficient K may be obtained by the following formula:
K＝Δts/Δt；
wherein K is a reference coefficient of the detection period, K is less than or equal to 1, delta ts is a time interval, and delta t is an initial detection period. Therefore, the air conditioner can match the indoor environment temperature detection period more consistent with the current environment according to the obtained detection period reference coefficient K, and the energy saving degree of the air conditioner is improved.
In some embodiments, the detection period reference coefficient K is determined by determining a target period threshold interval to which the detection period reference coefficient K belongs; and acquiring a target detection period for acquiring the indoor environment temperature in the compressor frequency control logic according to the target period threshold interval, wherein the target detection period is in positive correlation with a detection period reference coefficient, namely the smaller the detection period reference coefficient is, the larger the deviation between the actual working environment and the standard working condition is, and the indoor environment temperature is acquired by shortening the target detection period so as to ensure the stability of temperature adjustment in the actual working environment. That is, the air conditioner may preset a plurality of cycle threshold intervals according to actual conditions, each cycle threshold interval is provided with a corresponding detection cycle, and the corresponding relationship between the cycle threshold interval and the detection cycle is stored in the controller. After the detection period reference coefficient K is calculated, a target period threshold value interval to which the detection period reference coefficient K belongs is determined to obtain a target detection period, and correction of the indoor environment temperature detection period collected in the compressor frequency control logic according to the actual environment load test parameters is achieved.
In some embodiments, the air conditioner may set three period threshold intervals, specifically, if it is determined that K1 is greater than or equal to K is less than or equal to 1, the detection period for acquiring the indoor environment temperature in the compressor frequency control logic is kept unchanged, that is, the detection period is the same as the detection period for acquiring the indoor environment temperature in the compressor frequency control logic under the standard working condition; or if K2 is determined to be more than or equal to K < K1, the target detection period is delta t 1; alternatively, if K < K2 is determined, the target detection period is Δ t2, where Δ t2 <. DELTA t1 <. DELTA t. Namely, the smaller the reference coefficient of the detection period is, the larger the deviation between the actual working environment and the standard working condition is, and the indoor environment temperature is acquired by shortening the target detection period so as to ensure the stability of temperature adjustment in the actual working environment.
For example, three period threshold intervals set by the air conditioner may be embodied in the form of a table, as shown in table 1, after the controller stores the corresponding relationship table between the period threshold interval and the detection period, the target detection period may be obtained directly by looking up the table when necessary.
TABLE 1
| Periodic threshold interval | K＜K2 | K2≤K＜K1 | K1≤K≤1 |
| Detection period | △t2 | △t1 | △t |
In some embodiments, the first intermediate parameter M may be obtained by the following formula:
M＝(T1-Ts)/ΔT1；
where M is the first intermediate parameter, T1 is the first indoor ambient temperature, Ts is the initial indoor ambient temperature, and Δ T1 is the first predetermined temperature difference. Furthermore, the first frequency adjustment reference coefficient obtained according to the first intermediate parameter M may be, for example, denoted as N, where the first frequency adjustment reference coefficient N is inversely related to the first intermediate parameter M. Therefore, the air conditioner corrects the target compressor frequency control logic parameter according to the obtained first frequency adjustment reference coefficient N so as to match the compressor frequency control logic which is more consistent with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In an embodiment, when obtaining the first frequency adjustment reference coefficient N according to the first intermediate parameter M, the first frequency adjustment reference coefficient N may be obtained according to a functional relationship between the first intermediate parameter M and the first frequency adjustment reference coefficient N, such as the functional relationship may be expressed as N ═ f (M), N is negatively correlated with M; or, a plurality of first intermediate parameter threshold intervals may be preset, each first intermediate parameter threshold interval is provided with a corresponding first frequency adjustment reference coefficient, a correspondence between the first intermediate parameter threshold interval and the first frequency adjustment reference coefficient is stored in the controller, and the controller may obtain the corresponding first frequency adjustment reference coefficient N by directly looking up a table according to the calculated first intermediate parameter M.
Taking the example of determining the first frequency adjustment reference coefficient N by using a look-up table, as shown in table 2, where N1 < N2 < 1 < N3 < N4.
TABLE 2
| First intermediate parameter M | M≤M4 | M4＜M≤M3 | M3＜M≤M2 | M2＜M＜M1 | M≥M1 | |
| First frequency adjustment reference coefficient | N4 | N3 | 1 | N2 | N1 |
Therefore, according to the corresponding relationship between the first intermediate parameter threshold interval and the first frequency adjustment reference coefficient in table 2, after the first intermediate parameter M is obtained, the controller may determine the first intermediate parameter threshold interval to which the first intermediate parameter M belongs, and obtain the corresponding first frequency adjustment reference coefficient N according to the first intermediate parameter threshold interval.
In some embodiments, the temperature difference correction coefficient may be obtained from the outdoor ambient temperature Tw, for example, may be denoted as P, where the temperature difference correction coefficient P is inversely related to the outdoor ambient temperature Tw.
Specifically, when the temperature difference correction coefficient P is obtained from the outdoor ambient temperature Tw, the temperature difference correction coefficient P may be obtained from a functional relationship between the outdoor ambient temperature Tw and the temperature difference correction coefficient P, such as the functional relationship may be expressed as P ═ f (Tw), P is negatively correlated with Tw; or, a plurality of outdoor environment temperature threshold value intervals can be preset, each outdoor environment temperature threshold value interval is provided with a corresponding temperature difference correction coefficient, the corresponding relation between the outdoor environment temperature threshold value interval and the temperature difference correction coefficient is stored in the controller, and the controller can directly look up a table according to the outdoor environment temperature Tw to obtain the corresponding temperature difference correction coefficient P.
Taking the table lookup to determine the temperature difference correction coefficient P as an example, as shown in Table 3, wherein P1 < P2 < 1 < P3 < P4.
TABLE 3
Therefore, according to the corresponding relationship between the threshold interval of the outdoor environment temperature inside and outside the chamber and the temperature difference correction coefficient P in table 2, the controller can determine the threshold interval of the outdoor environment temperature to which the outdoor environment temperature Tw belongs, and obtain the corresponding temperature difference correction coefficient P according to the threshold interval of the outdoor environment temperature.
Further, the second intermediate parameter L is obtained by the following formula according to the temperature difference correction coefficient P, the final indoor ambient temperature Tz, and the initial indoor ambient temperature Ts.
L＝(Tz-Ts)/ΔT2；
ΔT2＝ΔT21*P；
Wherein, L is a second intermediate parameter, Tz is a final indoor environment temperature, Ts is an initial indoor environment temperature, Δ T21 is a second preset temperature difference value, and P is a temperature difference correction coefficient. Further, a second frequency adjustment reference coefficient W is obtained from the second intermediate parameter L, wherein the second frequency adjustment reference coefficient W is inversely related to the second intermediate parameter L. Therefore, the air conditioner corrects the target compressor frequency control logic parameter according to the obtained second frequency adjustment reference coefficient W so as to match the compressor frequency control logic which is more consistent with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In an embodiment, when obtaining the second frequency adjustment reference coefficient W according to the second intermediate parameter L, the second frequency adjustment reference coefficient W may be obtained according to a functional relationship between the second intermediate parameter L and the second frequency adjustment reference coefficient W, such as the functional relationship may be represented as W ═ f (L), W is negatively correlated with L; or, a plurality of second intermediate parameter threshold intervals may be preset, each second intermediate parameter threshold interval is provided with a corresponding second frequency adjustment reference coefficient, the correspondence between the second intermediate parameter threshold interval and the second frequency adjustment reference coefficient is stored in the controller, and the controller may obtain the corresponding second frequency adjustment reference coefficient W by directly looking up a table according to the calculated second intermediate parameter L.
For example, the second frequency adjustment reference coefficient W is determined by a look-up table, as shown in table 2, wherein W1 < W2 < 1 < W3 < W4.
TABLE 2
| Second intermediate parameter L | L≤L4 | L4＜L≤L3 | L3＜L≤L2 | L2＜L＜L1 | L≥L1 | |
| Second frequency adjustment reference coefficient | W4 | W3 | 1 | W2 | W1 |
Therefore, according to the corresponding relationship between the second intermediate parameter threshold interval and the second frequency adjustment reference coefficient W in table 2, after the second intermediate parameter L is obtained, the controller may determine the second intermediate parameter threshold interval to which the second intermediate parameter L belongs, and obtain the corresponding second frequency adjustment reference coefficient W according to the second intermediate parameter threshold interval.
Further, the compressor frequency control logic is modified according to the first frequency adjustment reference coefficient N and the second frequency adjustment reference coefficient W obtained in the above steps, and specifically, a final logic adjustment value for modifying the compressor frequency may be obtained by the following formula.
Δhz＝N*W*Δh
And the delta hz is a final logic adjustment value, the delta h is a compressor frequency control logic under a standard working condition, the N is a first frequency adjustment reference coefficient, and the W is a second frequency adjustment reference coefficient. Therefore, when the actual working environment deviates from the standard working condition, the frequency control logic of the compressor can be corrected through the first frequency adjustment reference coefficient N and the second frequency adjustment reference coefficient W, so that the air conditioner is matched with the running load more in line with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In some embodiments, after the air conditioner starts the environmental load test mode, the outdoor ambient temperature Tw and the indoor ambient temperature are first obtained; if the outdoor environment temperature Tw is determined to be greater than or equal to a first preset temperature threshold value, controlling the air conditioner to operate in a cooling mode, or if the outdoor environment temperature Tw is determined to be less than a second preset temperature threshold value, controlling the air conditioner to operate in a heating mode, wherein the first preset temperature threshold value is greater than the second preset temperature threshold value; and then controlling the compressor to operate at a preset target frequency.
And if the change value of the indoor environment temperature is determined to be less than or equal to the third preset temperature difference value, for example, t1, it indicates that the indoor environment temperature of the actual working environment is stable, and therefore the air conditioner is controlled to exit the environmental load test mode. For example, when the air conditioner operates in the environmental load test mode, the indoor environment temperature is monitored in real time, if the indoor environment temperature at the current time is Tq, the indoor environment temperature monitored after the time period of operation tm is Tn, the change value of the indoor environment temperature in the time period is | Tn-Tq |, and the change value | Tn-Tq |, is less than or equal to t1, the air conditioner is controlled to exit the environmental load test mode, and a shutdown instruction is executed.
The following describes an exemplary method for modifying the compressor frequency control logic according to an embodiment of the present invention with reference to fig. 2, which is described in detail below.
Step S4, the environmental load test mode is executed.
Step S5, obtaining actual environmental load test parameters including an initial indoor environment temperature Ts, a first indoor environment temperature T1, a final indoor environment temperature Tz and a time interval delta Ts.
In step S6, a detection period reference coefficient K is calculated.
In step S7, a first intermediate parameter M is calculated.
In step S8, a second intermediate parameter L is calculated.
And step S9, correcting the detection period of the indoor environment temperature, namely acquiring the target detection period of the indoor environment temperature collected in the compressor frequency control logic.
In step S10, the first frequency adjusts the reference coefficient N.
In step S11, a second frequency adjustment reference coefficient W is acquired.
In step S12, the compressor frequency adjustment value is corrected.
Therefore, through the steps, when the air conditioner runs in the environment load test mode, the actual environment load test parameters in the running process of the air conditioner are monitored, and the reference coefficient of the compressor frequency control logic is corrected according to the actual environment load test parameters, so that when the actual working environment deviates from the standard working condition, the compressor frequency control logic can be corrected through the reference coefficient, the air conditioner is matched with the running load which is more consistent with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
In an embodiment of the second aspect of the present invention, an air conditioner 1 includes at least one processor 2 and a memory 3 communicatively connected to the at least one processor 2, as shown in fig. 3.
The memory 3 stores a computer program executable by the at least one processor 2, and the at least one processor 2 implements the method for modifying the compressor frequency control logic provided in the above embodiments when executing the computer program.
According to the air conditioner 1 provided by the embodiment of the invention, the processor 2 adopts the method for correcting the compressor frequency control logic provided by the embodiment, and when the actual working environment deviates from the standard working condition, the compressor frequency control logic can be corrected according to the obtained actual environment load test parameters, so that the air conditioner can be matched with the running load more in line with the current environment, and the energy saving degree and the comfort degree of the air conditioner are improved.
A third embodiment of the present invention provides a computer storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for modifying the compressor frequency control logic provided by the above embodiments.
In the description of this specification, any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of custom logic functions or processes, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A method of modifying compressor frequency control logic, comprising:
controlling an air conditioner to operate an environmental load test mode, wherein actual environmental load test parameters are recorded;
calculating a reference coefficient for correcting a compressor frequency control logic according to the actual environmental load test parameters;
and obtaining a target compressor frequency control logic parameter according to the reference coefficient so as to correct the compressor frequency control logic.
2. The method of modifying compressor frequency control logic of claim 1, wherein recording actual environmental load test parameters comprises:
recording an initial indoor environment temperature of the environment load test mode, a first indoor environment temperature and an outdoor environment temperature of a first preset time after the environment load test mode is started;
acquiring a second indoor environment temperature every other second preset time, determining the current time when the temperature difference between the second indoor environment temperature and the initial indoor environment temperature reaches a first temperature difference threshold, and recording the time interval from the time of starting the environment load test mode to the current time;
recording the final indoor ambient temperature at the end of the environmental load test mode.
3. The method of modifying compressor frequency control logic of claim 2, wherein calculating a reference coefficient for modifying compressor frequency control logic based on said actual environmental load test parameter comprises:
acquiring a detection period reference coefficient according to an initial detection period for detecting the indoor environment temperature in the compressor frequency control logic under the time interval and the standard working condition;
obtaining a first frequency adjustment reference coefficient according to the first indoor environment temperature and the initial indoor environment temperature, and obtaining a second frequency adjustment reference coefficient according to the final indoor environment temperature, the initial indoor environment temperature and the outdoor environment temperature.
4. The method of modifying compressor frequency control logic according to claim 3, wherein obtaining the sensing period reference coefficient based on the time interval and an initial sensing period of the compressor frequency control logic during the normal operation for sensing the indoor ambient temperature comprises:
obtaining the detection period reference coefficient by the following formula:
K＝Δts/Δt；
and K is the reference coefficient of the detection period, K is less than or equal to 1, delta ts is a time interval, and delta t is the initial detection period.
5. The method of modifying compressor frequency control logic according to claim 3 or 4, wherein obtaining a target compressor frequency control logic parameter based on the reference coefficient comprises:
determining a target period threshold interval to which the detection period reference coefficient belongs;
and acquiring a target detection period for acquiring the indoor environment temperature in the compressor frequency control logic according to the target period threshold interval, wherein the target detection period is in positive correlation with the detection period reference coefficient.
6. The method of modifying compressor frequency control logic according to claim 5, wherein obtaining a target detection period for acquiring indoor ambient temperature in compressor frequency control logic based on said target period threshold interval comprises:
if K1 is determined to be more than or equal to K and less than or equal to 1, keeping the detection period of the indoor environment temperature collected in the compressor frequency control logic unchanged;
or determining that K is more than or equal to K2 and less than K1, and then the target detection period is delta t 1;
alternatively, it is determined that K < K2, the target detection period is Δ t2, where Δ t2 <. DELTA t1 <. DELTA t.
7. The method of modifying compressor frequency control logic according to claim 3, wherein obtaining a first frequency adjustment reference coefficient based on said first indoor ambient temperature and said initial indoor ambient temperature comprises:
the first intermediate parameter is obtained by the following formula:
M＝(T1-Ts)/ΔT1；
wherein M is the first intermediate parameter, T1 is the first indoor ambient temperature, Ts is the initial indoor ambient temperature, Δ T1 is a first predetermined temperature difference value;
obtaining the first frequency adjustment reference coefficient according to the first intermediate parameter, wherein the first frequency adjustment reference coefficient is inversely related to the first intermediate parameter.
8. The method of modifying compressor frequency control logic according to claim 3 or 7, wherein obtaining a second frequency adjustment reference coefficient based on said final indoor ambient temperature, said initial indoor ambient temperature and said outdoor ambient temperature comprises:
obtaining a temperature difference correction coefficient according to the outdoor environment temperature, wherein the temperature difference correction coefficient is in negative correlation with the outdoor environment temperature;
obtaining a second intermediate parameter according to the temperature difference correction coefficient, the final indoor environment temperature and the initial indoor environment temperature through the following formula:
L＝(Tz-Ts)/ΔT2；
ΔT2＝ΔT21*P；
wherein L is the second intermediate parameter, Tz is the final indoor environment temperature, Ts is the initial indoor environment temperature, Δ T21 is a second preset temperature difference value, and P is a temperature difference correction coefficient;
obtaining the second frequency adjustment reference coefficient according to the second intermediate parameter, wherein the second frequency adjustment reference coefficient is inversely related to the second intermediate parameter.
9. The method of modifying compressor frequency control logic of claim 1, wherein controlling an air conditioner to operate in an environmental load test mode comprises:
starting the environmental load test mode;
acquiring indoor ambient temperature and outdoor ambient temperature;
determining that the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, and controlling the air conditioner to operate in a cooling mode, or determining that the outdoor environment temperature is less than a second preset temperature threshold value, and controlling the air conditioner to operate in a heating mode, wherein the first preset temperature threshold value is greater than the second preset temperature threshold value;
controlling the compressor to operate at a preset target frequency;
and if the change value of the indoor environment temperature is determined to be less than or equal to a third preset temperature difference value, controlling the air conditioner to exit the environment load test mode.
10. An air conditioner, comprising:
at least one processor;
a memory communicatively coupled to the at least one processor;
wherein the memory has stored therein a computer program executable by at least one processor, the computer program when executed by the at least one processor implementing the method of modifying compressor frequency control logic of any one of claims 1-9.
11. A computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method of modifying compressor frequency control logic of any of claims 1-9.
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