CN114754461A - Control method of air conditioner, controller, air conditioner and storage medium - Google Patents
Control method of air conditioner, controller, air conditioner and storage medium Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a control method of an air conditioner, the controller, the air conditioner and a storage medium, wherein the control method of the air conditioner comprises the following steps: acquiring the indoor environment temperature of the air conditioner; determining an exhaust temperature adjustment parameter according to the indoor environment temperature; adjusting the first target exhaust temperature according to the exhaust temperature adjusting parameter to obtain a second target exhaust temperature, wherein the first target exhaust temperature is determined according to the operating frequency of the compressor and the temperature of the heat exchanger; and adjusting the opening degree of the electronic expansion valve according to the second target exhaust temperature. According to the control method of the air conditioner, the temperature adjustment parameters are obtained by correlating the indoor environment temperature, the unassociated first target exhaust temperature is adjusted, the second target exhaust temperature which enables the air conditioner to normally operate in different temperature ranges is obtained, the air conditioner is prevented from entering a low-temperature protection state under the condition of indoor low temperature, and the air conditioner is guaranteed to normally operate under the indoor low-temperature environment.
Description
Technical Field
The present invention relates to the field of air conditioner control technologies, and in particular, to an air conditioner control method, a controller, an air conditioner, and a computer-readable storage medium.
Background
In the prior art, the control mode of an electronic expansion valve of an air conditioner is generally automatic adjustment according to a target exhaust temperature, the electronic expansion valve adjusts the refrigerant circulation volume in an air conditioner system according to the target exhaust temperature, so that various indexes of the air conditioner meet the operation requirements of the air conditioner, wherein the target exhaust temperature is obtained according to parameters such as operation frequency, heat exchanger pipeline temperature and the like;
when the indoor unit of the air conditioner operates in an indoor low-temperature environment, due to the narrow application range of the parameters of the electronic expansion valve, the preset target exhaust temperature cannot be suitable for the air conditioner during low-temperature heating under the indoor low-temperature condition, the low pressure of the air conditioner is too low, low-pressure protection is triggered, and then the air conditioner is stopped due to faults.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the present application.
The embodiment of the invention provides a control method of an air conditioner, a controller, the air conditioner and a computer readable storage medium.
An embodiment of a first aspect of the present invention provides a control method of an air conditioner, the method including:
acquiring the indoor environment temperature of the air conditioner;
determining an exhaust temperature adjustment parameter according to the indoor environment temperature;
adjusting the first target exhaust temperature according to the exhaust temperature adjusting parameter to obtain a second target exhaust temperature, wherein the first target exhaust temperature is determined according to the operating frequency of the compressor and the temperature of the heat exchanger;
and adjusting the opening degree of the electronic expansion valve according to the second target exhaust temperature.
The control method of the air conditioner according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the control method of the air conditioner obtains the temperature adjustment parameter through the correlation indoor ambient temperature, adjusts the first target exhaust temperature determined according to the operating frequency of the compressor and the temperature of the heat exchanger, obtains the application range larger than that of the traditional method, enables the second target exhaust temperature of the air conditioner in the normal operation of the homoenergetic in different temperature ranges, avoids the air conditioner to enter the low temperature protection state under the indoor low temperature condition, and ensures that the air conditioner can also operate normally under the indoor low temperature environment.
In some embodiments, the second target exhaust gas temperature is positively correlated with the indoor ambient temperature in a case where the indoor ambient temperature is less than a temperature threshold.
In some embodiments, said determining an exhaust temperature adjustment parameter based on said indoor ambient temperature comprises:
determining a first coefficient according to the indoor environment temperature;
and calculating the exhaust temperature adjusting parameter according to the first coefficient, the first temperature threshold and the indoor environment temperature.
In some embodiments, the exhaust temperature adjustment parameter is positively correlated with the indoor ambient temperature when the indoor ambient temperature is less than a temperature threshold;
alternatively, the first and second electrodes may be,
the exhaust temperature adjustment parameter is 0 when the indoor ambient temperature is greater than or equal to a temperature threshold.
In some embodiments, said determining a first coefficient from said indoor ambient temperature comprises:
and determining the first coefficient corresponding to the indoor environment temperature according to a preset corresponding relation table, wherein the preset corresponding relation table represents the corresponding relation between the indoor environment temperature and the first coefficient.
In some embodiments, the determining the first coefficient corresponding to the indoor environment temperature according to a preset correspondence table includes:
under the condition that the indoor environment temperature is lower than a first temperature, taking the first coefficient as a first adjustment value;
under the condition that the indoor environment temperature is greater than or equal to the first temperature and is less than a second temperature, taking the first coefficient as a second adjustment value;
under the condition that the indoor environment temperature is greater than or equal to the second temperature and is less than a third temperature, taking the first coefficient as a third adjustment value;
when the indoor environment temperature is greater than or equal to a third temperature, taking the first coefficient as 0;
the first adjustment value is greater than the second adjustment value, and the second adjustment value is greater than the third adjustment value.
In some embodiments, the method of generating the first target exhaust temperature includes:
acquiring heat exchanger temperature parameters through a temperature sensor, wherein the heat exchanger temperature parameters comprise: indoor heat exchanger pipe temperature and outdoor heat exchanger pipe temperature;
acquiring the running frequency of a compressor of the air conditioner;
and inputting the indoor heat exchanger pipeline temperature, the outdoor heat exchanger pipeline temperature and the compressor running frequency into a preset algorithm model to obtain a first exhaust temperature.
In some embodiments, before obtaining the indoor ambient temperature of the air conditioner, the method further includes:
and after the air conditioner is electrified, heated and started, the electronic expansion valve is reset.
Embodiments of the second aspect of the present invention provide a controller, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the method for controlling an air conditioner as described in any one of the embodiments of the first aspect.
In some embodiments, the processor executes the computer program to perform the method of controlling an air conditioner according to any one of the embodiments of the first aspect of the present invention at preset intervals.
An embodiment of a third aspect of the invention provides an air conditioner comprising a controller as described in the second aspect of the invention.
An embodiment of a fourth aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the method of controlling an air conditioner according to any one of the embodiments of the first aspect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a step of determining an exhaust temperature adjustment parameter in a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a step of determining a first coefficient in a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart of determining a first coefficient according to a preset correspondence table in a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for generating a first target discharge air temperature in a control method of an air conditioner according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a method of controlling an air conditioner before obtaining an indoor ambient temperature according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a controller according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the related art, the electronic expansion valve of the air conditioner is generally controlled automatically according to a target exhaust temperature, and the electronic expansion valve adjusts the refrigerant circulation volume in the air conditioner system according to the target exhaust temperature, so that various indexes of the air conditioner meet the operation requirements of the air conditioner, wherein the target exhaust temperature is obtained according to parameters such as operation frequency, heat exchanger pipe temperature and the like, so that when an indoor unit of the air conditioner operates in a low-temperature environment, the problem that the preset target exhaust temperature cannot be suitable for the air conditioner during low-temperature heating due to narrow application range of the electronic expansion valve parameters exists, so that the indoor environment temperature is low, when various pressure indexes including return air pressure and exhaust air pressure in the air conditioner are reduced under the influence of the environment, the air conditioner is not suitable for reducing various pressure indexes due to the target exhaust temperature, so that the opening degree of the electronic expansion valve is small, the air conditioner enters a low-voltage protection state under the action of the pressure switch, and then the air conditioner is stopped due to faults.
Based on the above situation, an embodiment of the present invention provides a control method of an air conditioner, a controller, an air conditioner, and a computer-readable storage medium, where the control method of the air conditioner includes, but is not limited to, the following steps:
acquiring the indoor environment temperature of the air conditioner;
determining an exhaust temperature adjustment parameter according to the indoor environment temperature;
adjusting the first target exhaust temperature according to the exhaust temperature adjusting parameter to obtain a second target exhaust temperature, wherein the first target exhaust temperature is determined according to the operating frequency of the compressor and the temperature of the heat exchanger;
and adjusting the opening degree of the electronic expansion valve according to the second target exhaust temperature.
According to the technical scheme of the embodiment of the invention, the control method obtains the target exhaust temperature correction value by associating the indoor environment temperature, corrects the first target exhaust temperature obtained by the preset algorithm to obtain a second target exhaust temperature which has a wider application range compared with the traditional method and can be reasonably adjusted in different temperature ranges of the air conditioner, so that when the indoor environment temperature is in the preset temperature range, the second target exhaust temperature is reduced along with the reduction of the indoor environment temperature, and under the condition that the indoor environment temperature of the air conditioner is low, and when various pressure indexes including return air pressure and exhaust air pressure in the air conditioner are reduced under the influence of the environment due to the low indoor environment temperature, the target exhaust temperature is higher, the opening degree of the electronic expansion valve is small, and the pressure indexes are further reduced, so that under the action of the pressure switch, the air conditioner enters a low-voltage protection state, thereby causing the condition of fault shutdown of the air conditioner to occur, and simultaneously, after the second target exhaust temperature is obtained, the opening degree of the electronic expansion valve is adjusted according to the second target exhaust temperature, furthermore, when the air conditioner is in a low indoor environment temperature condition and various pressure indexes including return air pressure and exhaust pressure of the air conditioner are reduced by the influence of the environment, according to the second target exhaust temperature, the opening degree of the electronic expansion valve is increased, and then various pressure indexes including return air pressure and exhaust pressure of the air conditioner are increased, so that the opening degree of the electronic expansion valve can be increased by the second target exhaust temperature which is lower than that of a traditional method under the indoor low-temperature environment of the air conditioner, various pressure indexes including the return air pressure and the exhaust pressure are increased, and the air conditioner can normally run under the indoor low-temperature environment.
The embodiments of the present invention will be further explained with reference to the drawings.
Based on the above module hardware structure of the air conditioner, various embodiments of the control method of the air conditioner of the present invention are proposed.
As shown in fig. 1, fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. The control method of the air conditioner of the embodiment of the invention includes, but is not limited to, step S110, step S120, step S130 and step S140.
Step S110, acquiring the indoor environment temperature of the air conditioner;
specifically, the existing electronic expansion valve control method generally performs automatic adjustment according to a target exhaust temperature, wherein the target exhaust temperature is calculated according to a determined calculation formula, and only parameters such as an operating frequency, an outdoor environment temperature, a heat exchanger pipe temperature and the like are related. When the indoor unit of the air conditioner is operated in a low-temperature environment, for example: the indoor temperature is 0 ℃, and at this time, because the target exhaust temperature is not related to the indoor environment temperature, and the setting of general parameters is set according to the normal temperature, namely about 20 ℃, the preset parameters of the electronic expansion valve cannot be suitable for the system operation at this time, and the system fails, therefore, in the air conditioner control method, the indoor environment temperature of the air conditioner is obtained before the target exhaust temperature is determined, the exhaust temperature adjustment parameter is determined according to the indoor environment temperature, the first target exhaust temperature is adjusted according to the exhaust temperature adjustment parameter, and preparation is made for obtaining the second target exhaust temperature.
It should be noted that, in some embodiments, after the air conditioner is powered on and started, the electronic expansion valve first executes the reset action command, meanwhile, the temperature sensor connected with the air conditioner in a wired or wireless way is used for collecting the indoor environment temperature of the air conditioning system, wherein the temperature sensor may be one of the following thermocouple sensors, thermistor sensors, resistance temperature detectors or IC temperature sensors, and any combination of the following common temperature sensors, and a person skilled in the art may select a temperature sensor or select any other method for acquiring the indoor ambient temperature according to the actual situation, and this embodiment does not constitute a limitation to the step of acquiring the indoor ambient temperature of the air conditioner, the step includes a method for acquiring the indoor environment temperature through a temperature sensor, or acquiring the indoor environment temperature of the air conditioner through manual input of the indoor environment temperature and relevant parameters and the like.
It should be noted that, in some embodiments, the air conditioner includes, but is not limited to, an indoor unit, an outdoor unit and a controller, and the indoor ambient temperature of the air conditioner is the ambient temperature of the indoor unit.
Step S120, determining exhaust temperature adjusting parameters according to the indoor environment temperature;
specifically, in some embodiments, the exhaust temperature adjustment parameter is determined according to the indoor ambient temperature, so that when the indoor ambient temperature is within the preset temperature range, the target exhaust temperature is decreased with the decrease of the indoor ambient temperature, and it can be avoided that when the indoor ambient temperature of the air conditioner is low, and when pressure indexes including return air pressure and exhaust pressure in the air conditioner are decreased due to environmental influences, and simultaneously, the target exhaust temperature is high, the opening degree of the electronic expansion valve is small, and the pressure indexes are further decreased, so that the air conditioner enters a low-pressure protection state under the action of the pressure switch, and further the air conditioner is in a fault shutdown state, so that the air conditioner can increase the opening degree of the electronic expansion valve with the target exhaust temperature lower than that of the conventional method, and increase the pressure indexes including return air pressure and exhaust pressure, thereby enabling the air conditioner to operate normally.
It should be noted that, in some embodiments, the influence of the exhaust temperature adjustment parameter on the target exhaust temperature is reduced along with the reduction of the indoor ambient temperature, so that the air conditioner can obtain a reasonable target exhaust temperature according to the indoor ambient temperature under the condition of low indoor temperature and adjust according to the target exhaust temperature, thereby avoiding the condition of protection due to too low pressure.
Step S130, adjusting the first target exhaust temperature according to the exhaust temperature adjusting parameter to obtain a second target exhaust temperature, wherein the first target exhaust temperature is determined according to the running frequency of the compressor and the temperature of the heat exchanger;
specifically, the first target exhaust temperature is adjusted according to the exhaust temperature adjustment parameter to obtain a second target exhaust temperature, wherein the first exhaust temperature represents a target exhaust temperature obtained by calculating according to a determined calculation formula in the conventional electronic expansion valve control mode and only associating parameters such as operating frequency, outdoor environment temperature, heat exchanger pipeline temperature and the like without associating the indoor environment temperature, in the application, the first target exhaust temperature is corrected through the acquired exhaust temperature adjusting parameter, so that the first target exhaust temperature is related to the indoor environment temperature, a second target exhaust temperature can be obtained through reasonable adjustment according to the indoor environment temperature, and then the electronic expansion valve is controlled according to the second target exhaust temperature in the subsequent process, so that various pressure indexes in the air conditioner are ensured to be normal, and the air conditioner is prevented from being mistakenly contacted with low-pressure protection to influence the normal operation of the air conditioner.
It should be noted that, in some embodiments, in the case that the indoor ambient temperature is less than the temperature threshold, the second target exhaust temperature is in a positive correlation with the indoor ambient temperature, and when the indoor ambient temperature is within the preset temperature range, the second target exhaust temperature decreases with a decrease in the indoor ambient temperature, it is conceivable that, in the case of low-temperature heating of the air conditioner, since the pressure indexes including the return air pressure and the exhaust air pressure in the air conditioner with low indoor ambient temperature decrease due to environmental influence, and at the same time, the air conditioner has a small opening of the electronic expansion valve due to low target exhaust temperature, further decreasing the pressure indexes, causing the air conditioner to enter a low-pressure protection state under the action of the pressure switch, thereby causing a malfunction of the air conditioner, so that the second target exhaust temperature decreases with a decrease in the indoor ambient temperature, enabling the air conditioner to be in a low-temperature indoor environment, the opening degree of the electronic expansion valve can be increased by lowering the second target exhaust temperature compared with the traditional method, and various pressure indexes including return air pressure and exhaust pressure are increased, so that the air conditioner can normally operate.
In some embodiments, assuming that the second target exhaust gas temperature is TPx, the first target exhaust gas temperature is TP0, and the exhaust gas temperature adjustment parameter is TPc, the first target exhaust gas temperature is adjusted according to the exhaust gas temperature adjustment parameter, and the calculation formula of the second target exhaust gas temperature is: the second target exhaust gas temperature TPx is the sum of the first target exhaust gas temperature TP0 and the exhaust gas temperature adjustment parameter TPc, and is obtained by adding the first target exhaust gas temperature TP0 and the exhaust gas temperature adjustment parameter TPc.
In step S140, the opening degree of the electronic expansion valve is adjusted according to the second target exhaust gas temperature.
The low-pressure protection of the air conditioner is used for preventing the compressor from being damaged due to no refrigerant running in the air conditioner system, and the pressure index in the air conditioner system can reflect the unit volume of the refrigerant in the air conditioner system.
Specifically, the basis for the air conditioner to adjust the opening degree of the electronic expansion valve is the second target exhaust temperature, and the compressor exhaust temperature, that is, the second target exhaust temperature is used as a correction factor for adjusting the opening degree of the electronic expansion valve, where it is known to those skilled in the art that the compressor exhaust temperature and the opening degree of the electronic expansion valve are in a negative correlation relationship, and the compressor exhaust temperature is a stable value under the condition that the opening degree of the electronic expansion valve is not changed, so that there are technical means for those skilled in the art to adjust the opening degree of the electronic expansion valve according to the second target exhaust temperature, and the specific steps of the method do not limit the present application.
It should be noted that if the opening degree of the electronic expansion valve is relatively small, the refrigerant flow in the system will also be small, and the system pressure will be relatively low. Conversely, if the opening degree of the electronic expansion valve is large, the flow rate of the refrigerant is relatively large, and thus the system pressure is relatively large, while the lower the pressure is, the lower the corresponding temperature is due to the thermodynamic properties of the refrigerant; the higher the pressure is, the higher the corresponding temperature is, so when the air conditioner is in the low temperature heating state, because the refrigerant flow in the evaporator also can reduce under the indoor microthermal condition, the pressure of system also can reduce, lead to the refrigerating output of unit volume in the system also can reduce to reduce the refrigeration efficiency of system, need increase the electronic expansion valve aperture this moment, improve the refrigerating output of unit volume in the system, improve the pressure of system, avoid the air conditioner to get into the low pressure protection state.
It should be noted that, in some embodiments, after the second target exhaust temperature is obtained, the electronic expansion valve is automatically adjusted according to the second target exhaust value, where the automatic adjustment mainly includes adjustment of the opening degree of the electronic expansion valve, and the application range of the existing electronic expansion valve control algorithm is extended, so that the air conditioner adjusts the opening degree of the electronic expansion valve in an indoor low-temperature environment, and it is avoided that the normal operation of the air conditioner is affected by mistakenly touching the low-voltage protection in a low indoor environment temperature condition.
In some embodiments, the second target exhaust gas temperature increases as the indoor ambient temperature decreases; after the second target exhaust temperature is obtained, the opening degree of the electronic expansion valve is adjusted according to the second target exhaust temperature, and then under the condition that the indoor environment temperature of the air conditioner is low, when various pressure indexes including return air pressure and exhaust pressure of the air conditioner are reduced by the influence of the environment, the opening degree of the electronic expansion valve is increased according to the second target exhaust temperature, and further various pressure indexes including the return air pressure and the exhaust pressure of the air conditioner are increased, so that the air conditioner can normally operate in the indoor low-temperature environment.
Referring to fig. 2, step S120 includes, but is not limited to, the following steps S210, S220, and S230:
step S210, determining a first coefficient according to the indoor environment temperature;
and S220, calculating to obtain an exhaust temperature adjusting parameter according to the first coefficient, the first temperature threshold and the indoor environment temperature.
Specifically, in some embodiments, assuming that the first coefficient is a, the first temperature threshold is T10, the indoor ambient temperature is T1, and the exhaust temperature adjustment parameter is TPc, the calculation formula of the exhaust temperature adjustment parameter calculated according to the first coefficient, the first temperature threshold, and the indoor ambient temperature is: and TPc (a) (T1-T10), where the value of the exhaust temperature adjustment parameter TPc is the product of the first coefficient a and the difference between the indoor ambient temperature T1 and the first temperature threshold T10, where the calculation formula for obtaining the second target exhaust temperature is: when the value "a" is a fixed value, as T1 decreases, TPc also decreases, and TPx decreases, the opening degree of the electronic expansion valve is adjusted at a lower target exhaust gas temperature TPx, so that the opening degree of the electronic expansion valve increases, and the air conditioner is prevented from being erroneously protected from low pressure.
In some embodiments, the exhaust temperature adjustment parameter is positively correlated with the indoor ambient temperature in the event that the indoor ambient temperature is less than the temperature threshold; alternatively, the exhaust gas temperature adjustment parameter is 0 when the indoor ambient temperature is greater than or equal to the temperature threshold value.
In some embodiments, the T10 is in a range of 0 to 30 degrees celsius, preferably 20 degrees celsius, and T10 reflects the current ambient temperature to a certain extent, so the range of 0 to 30 degrees celsius is suitable, and in the calculation process of the preset target exhaust temperature of some air conditioners, the air conditioner controller presets a parameter value of 20 so that the control method of the air conditioner in the present application has a larger application range because 20 degrees celsius is a temperature value that can represent the normal indoor ambient temperature.
It should be noted that the first coefficient is determined according to the indoor environment temperature, the first coefficient is obtained according to a mapping relationship between the indoor environment temperature and the first coefficient which is built in the air conditioner after the indoor environment temperature is obtained, the first coefficient represents the influence of the indoor environment temperature on the exhaust temperature adjustment parameter, the first temperature threshold is a preset parameter value of the air conditioner controller, the first coefficient is determined according to the indoor environment temperature, the exhaust temperature adjustment parameter is obtained by calculation according to the first coefficient, the first temperature threshold and the indoor environment temperature, and then the first target exhaust temperature is corrected through the temperature adjustment parameter for the following, so that the second target exhaust temperature which enables the air conditioner to normally operate under the condition of the indoor low temperature is obtained.
Referring to fig. 3, step S210 includes, but is not limited to, the following step S310:
step S310, a first coefficient corresponding to the indoor environment temperature is determined according to a preset corresponding relation table, and the preset corresponding relation table represents the corresponding relation between the indoor environment temperature and the first coefficient.
It should be noted that the preset correspondence table may be automatically generated according to historical data or manually input by a worker, and represents a correspondence between the indoor environment temperature and the first coefficient, when the air conditioner acquires the indoor environment temperature, the first coefficient corresponding to the indoor environment temperature is determined according to the preset correspondence table, where the first coefficient represents an influence of the indoor environment temperature on the target temperature correction parameter, and the larger the first coefficient is, the larger the influence is.
Referring to fig. 4, step S310 includes, but is not limited to, the following steps S410, S420, S430, and S440:
step S410, under the condition that the indoor environment temperature is lower than the first temperature, taking the first coefficient as a first adjusting value;
step S420, when the indoor environment temperature is greater than or equal to the first temperature and less than the second temperature, taking the first coefficient as a second adjustment value;
step S430, under the condition that the indoor environment temperature is greater than or equal to the second temperature and less than the third temperature, taking the first coefficient as a third adjustment value;
step S440, when the indoor ambient temperature is greater than or equal to the third temperature, the first coefficient is set to 0.
Specifically, in some embodiments, the first adjustment value a1 is greater than the second adjustment value a2, the second adjustment value a2 is greater than the third adjustment value a3, and the value of the first coefficient is greater as the indoor ambient temperature decreases within the preset temperature range, i.e., the lower the indoor ambient temperature, the greater the absolute value of the target temperature correction parameter, and the smaller the second target temperature.
In some embodiments, let the indoor ambient temperature be T1, and the first coefficient be a, the first coefficient corresponding to the indoor ambient temperature is determined according to a preset correspondence table, and the preset correspondence table represents a correspondence between the indoor ambient temperature and the first coefficient, where the preset correspondence table is shown in the following table (1):
watch (1)
| Temperature interval of T1 | T1<0 | 0≤T1<10 | 10≤T1<20 | 20≤T1 | |
| Value of a | | a2 | a3 | 0 |
Namely, the first temperature is 0 ℃, the second temperature is 10 ℃, the third temperature is 20 ℃, and the first coefficient is a1 under the condition that the indoor environment temperature is less than 0 ℃; under the condition that the indoor environment temperature is greater than or equal to 0 ℃ and less than 10 ℃, taking the first coefficient as a 2; under the condition that the indoor environment temperature is higher than or equal to 10 ℃ and lower than 20 ℃, the first coefficient is set to be a 3; under the condition that the indoor environment temperature is more than or equal to 20 ℃, the value of the first coefficient is 0 ℃, so that the electronic expansion valve control algorithm has a wider application range, the air conditioner can be adjusted in different temperature ranges, and the condition that the air conditioner mistakenly touches low-voltage protection under the condition that the indoor environment temperature is low is avoided.
In some embodiments, the value ranges of a1 to a3 are 0 ℃ to 20 ℃, a1 is greater than a2, and a2 is greater than a3, so that the influence of the indoor environment temperature on various pressure indexes of the air conditioner at present can be better reflected, and the target exhaust air temperature adjustment value is obtained by using the first coefficient and the indoor environment temperature, and then the second target exhaust air temperature enabling the air conditioner to normally operate at the low indoor environment temperature is obtained.
Referring to fig. 5, the first target exhaust gas temperature generation method includes, but is not limited to, the following steps S510 and S520:
s510, acquiring temperature parameters of the heat exchanger through a temperature sensor, wherein the temperature parameters of the heat exchanger comprise: indoor heat exchanger pipe temperature and outdoor heat exchanger pipe temperature;
s520, acquiring the running frequency of a compressor of the air conditioner;
and S530, inputting the indoor heat exchanger pipeline temperature, the outdoor heat exchanger pipeline temperature and the compressor running frequency into a preset algorithm model to obtain a first exhaust temperature.
Specifically, in some embodiments, inputting the indoor heat exchanger pipe temperature, the outdoor heat exchanger pipe temperature, and the compressor operating frequency into a preset algorithm model to obtain a first exhaust temperature includes: determining second coefficients corresponding to the temperature parameter of the heat exchanger and the running frequency of the compressor respectively according to a preset algorithm; and obtaining a first target exhaust temperature according to the second coefficient, the temperature parameter of the heat exchanger and the running frequency of the compressor.
In some embodiments, the second coefficients corresponding to the temperature parameter of the heat exchanger and the operating frequency of the compressor respectively may be dynamic coefficients corresponding to the temperature parameter of the heat exchanger and the operating frequency of the compressor respectively determined according to a preset algorithm, or may be preset fixed coefficients, and those skilled in the relevant art may adjust the coefficients according to actual conditions, which does not limit the present application.
Specifically, in some embodiments, the first target exhaust gas temperature is generated according to an existing target exhaust gas temperature calculation formula, only parameters such as the operating frequency F, the indoor heat exchanger pipe temperature T2, and the outdoor heat exchanger pipe temperature T3 are associated, when the indoor heat exchanger pipe temperature T2 and the outdoor heat exchanger pipe temperature T4 are obtained through the temperature sensor, and the compressor operating frequency F of the air conditioner is obtained, second coefficients corresponding to the heat exchanger temperature parameter and the compressor operating frequency respectively are determined according to a preset algorithm, where the preset algorithm is a common means for a person skilled in the relevant art to determine the target exhaust gas temperature without associating the indoor ambient temperature, and does not limit the present disclosure.
In some embodiments, the first target exhaust temperature is specifically generated by:
TP0 ═ k0+ k1 × (T2 + k2 × (T3-T30) + k3 ×, where TP0 is the first target exhaust gas temperature, k0 is the preset parameter value of the air conditioner controller, k1 is the second coefficient corresponding to the indoor heat exchanger pipe temperature T2, k2 is the second coefficient corresponding to the outdoor heat exchanger pipe temperature T3, T30 is the preset parameter value of the outdoor heat exchanger pipe temperature, and k3 is the second coefficient corresponding to the compressor operating frequency F, and the first target exhaust gas temperature of the unassociated indoor ambient temperature can be calculated by the above formula.
In some embodiments, the heat exchanger temperature parameter further includes an outdoor ambient temperature T4, and the first target discharge temperature is obtained by adding the product of the outdoor ambient temperature T4 and a corresponding second coefficient to the above formula.
Referring to fig. 6, before acquiring the indoor ambient temperature of the air conditioner, the following steps S610 are further included, but not limited to:
step S610 is to reset the electronic expansion valve after the air conditioner is powered on, heated and started.
It should be noted that, in some embodiments, after a certain time of starting the air conditioner for heating, the calculation examples are as follows:
the above TP0 ═ k0+ k1 × (T2 + k2 × (T3-T30) + k3 × F, TPc ═ a ═ T1-T10), and TPx ═ TP0+ TPc are used for calculation, where, according to table (1), but T1 is detected at 10 degrees celsius, T2 is detected at 30 degrees celsius, T3 is detected at 0 degrees celsius, the compressor operating frequency is 60Hz, a3 is 3.0, T10 is 20 degrees celsius, k0 is 20, k1/k2 is 0, and k3 is 0.7, then:
TP0 ═ 20+0.7 ═ 60 ═ 62 degrees celsius, TPx ═ 20+0.7 ═ 60+0.5 ═ 10-20 ═ 57 degrees celsius, it can be known that, compared with TP0 adopted as the target exhaust temperature in the prior art, adopting TPx as the target exhaust temperature in the present application can make the opening degree of the electronic expansion valve increase in the process of adjusting the electronic expansion valve, and then increase each pressure index in the air conditioner, make the air conditioner operate normally in the indoor low temperature environment, avoid touching the low pressure protection by mistake.
In some embodiments, after adjusting the opening degree of the electronic expansion valve according to the second target exhaust gas temperature, the method further comprises:
and after the preset time T, the steps of obtaining the indoor environment temperature T1 through the temperature sensor, obtaining a first target exhaust temperature according to a preset algorithm, obtaining a target exhaust temperature correction value according to the indoor environment temperature T1, obtaining a second target exhaust temperature according to the first target exhaust temperature and the target exhaust temperature correction value, and adjusting the opening degree of the electronic expansion valve according to the second target exhaust temperature are executed again.
In some embodiments, adjusting the opening degree of an electronic expansion valve in the air conditioner according to the second target exhaust gas temperature includes: acquiring the current opening degree of the electronic expansion valve; obtaining a target opening according to the second target exhaust temperature; and modifying the current opening degree into the target opening degree under the condition that the current opening degree is not equal to the target opening degree.
Based on the control method of the air conditioner described above, various embodiments of the controller, the air conditioner, and the computer-readable storage medium of the present invention are separately set forth below.
As shown in fig. 7, fig. 7 is a schematic diagram of a controller for executing a control method of an air conditioner according to an embodiment of the present invention.
Some embodiments of the present invention provide a controller, where the controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the method for controlling an air conditioner according to any one of the above embodiments when executing the computer program, for example, the method steps S110 to S140 in fig. 1, the method steps S210 to S220 in fig. 2, the method step S310 in fig. 3, the method steps S410 to S440 in fig. 4, the method steps S510 to S530 in fig. 5, and the method steps S610 to S640 in fig. 6 are performed as described above.
The controller 700 according to the embodiment of the present invention includes one or more processors 701 and a memory 702, and fig. 7 illustrates one processor 701 and one memory 702 as an example.
The processor 701 and the memory 702 may be connected by a bus or other means, such as the bus connection shown in fig. 7.
The memory 702, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer-executable programs. Further, the memory 702 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 702 may optionally include memory 702 located remotely from the processor 701, which may be connected to the controller 700 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In some embodiments, the processor executes the computer program to perform the control method of the air conditioner according to any one of the above embodiments at preset intervals.
Those skilled in the art will appreciate that the device configuration shown in fig. 1 does not constitute a limitation on the controller 700, and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
In the controller 700 shown in fig. 1, the processor 701 may be configured to call a control program of the air conditioner stored in the memory 702, thereby implementing a control method of the air conditioner.
Based on the hardware structure of the controller 700 described above, various embodiments of the air conditioner of the present invention are proposed.
Specifically, the air conditioner according to the embodiment of the present invention includes, but is not limited to, an indoor unit, an outdoor unit, and a controller, wherein the indoor unit is provided with an indoor heat exchange module and an indoor fan, the outdoor unit is provided with a compressor, a vapor-liquid separator, a refrigerant pipe switching module, an outdoor heat exchanger, a temperature sensor for detecting the outdoor heat exchanger, an outdoor fan, and a throttle valve, and the controller may include a processor 701 and a memory 702 as shown in fig. 7.
It should be noted that the indoor heat exchanger may be an evaporator, or may be other devices having heat exchange capability, and this embodiment is not limited thereto. It can be understood that the indoor heat exchanger serves as a condensation end in the heating mode, and plays a role in heat dissipation of the refrigerant.
The outdoor heat exchanger may be an evaporator, or may be other equipment having a heat exchange capability, and the embodiment is not particularly limited thereto. It can be understood that the outdoor heat exchanger serves as an evaporation end in the heating mode, and absorbs heat from the refrigerant.
It should be noted that the refrigerant pipeline switching module may be a four-way valve or a five-way valve according to different setting conditions of the refrigerant pipeline, and this embodiment does not specifically limit the present invention.
The non-transitory software programs and instructions required to implement the control method of the air conditioner of the above-described embodiment are stored in the memory, and when executed by the processor, the control method of the air conditioner of the above-described embodiment is performed.
In addition, the embodiment of the invention also provides an air conditioner, which comprises the controller.
It is to be noted that, since the air conditioner according to the embodiment of the present invention has the controller according to the above-described embodiment, and the controller according to the above-described embodiment is capable of executing the control method according to the above-described embodiment, the specific implementation and technical effects of the air conditioner according to the embodiment of the present invention may refer to the specific implementation and technical effects of the control method according to any one of the above-described embodiments.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions for performing the method for controlling an air conditioner, for example, the one or more processors may be enabled to execute the method for controlling an air conditioner in the above method embodiment, for example, the method steps S110 to S140 in fig. 1, the method steps S210 to S220 in fig. 2, the method step S310 in fig. 3, the method steps S410 to S440 in fig. 4, the method steps S510 to S530 in fig. 5, and the method steps S610 to S640 in fig. 6 are performed as described above.
The above-described apparatus embodiments are merely illustrative, and elements described as separate components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network nodes. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer readable storage media (or non-transitory media) and communication media (or transitory media). The term computer-readable storage medium includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer-readable storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are to be included within the scope of the present invention defined by the claims.
Claims (12)
1. A method for controlling an air conditioner, the method comprising:
acquiring the indoor environment temperature of the air conditioner;
determining an exhaust temperature adjustment parameter according to the indoor environment temperature;
adjusting the first target exhaust temperature according to the exhaust temperature adjusting parameter to obtain a second target exhaust temperature, wherein the first target exhaust temperature is determined according to the operating frequency of the compressor and the temperature of the heat exchanger;
and adjusting the opening degree of the electronic expansion valve according to the second target exhaust temperature.
2. The control method of an air conditioner according to claim 1, wherein the second target exhaust gas temperature is in a positive correlation with the indoor ambient temperature in a case where the indoor ambient temperature is less than a temperature threshold value.
3. The method of claim 1, wherein determining an exhaust temperature adjustment parameter based on the indoor ambient temperature comprises:
determining a first coefficient according to the indoor environment temperature;
and calculating the exhaust temperature adjusting parameter according to the first coefficient, the first temperature threshold and the indoor environment temperature.
4. The control method of an air conditioner according to claim 3,
when the indoor environment temperature is smaller than a temperature threshold value, the exhaust temperature adjustment parameter and the indoor environment temperature are in a positive correlation relationship;
alternatively, the first and second liquid crystal display panels may be,
the exhaust temperature adjustment parameter is 0 when the indoor ambient temperature is greater than or equal to a temperature threshold.
5. The control method of an air conditioner according to claim 3, wherein said determining a first coefficient according to the indoor ambient temperature includes:
and determining the first coefficient corresponding to the indoor environment temperature according to a preset corresponding relation table, wherein the preset corresponding relation table represents the corresponding relation between the indoor environment temperature and the first coefficient.
6. The method of claim 5, wherein determining the first coefficient corresponding to the indoor ambient temperature according to a preset correspondence table comprises:
under the condition that the indoor environment temperature is lower than a first temperature, taking the first coefficient as a first adjustment value;
under the condition that the indoor environment temperature is greater than or equal to the first temperature and is less than a second temperature, taking the first coefficient as a second adjustment value;
under the condition that the indoor environment temperature is greater than or equal to the second temperature and is less than a third temperature, taking the first coefficient as a third adjustment value;
when the indoor environment temperature is greater than or equal to a third temperature, taking the first coefficient as 0;
the first adjustment value is greater than the second adjustment value, and the second adjustment value is greater than the third adjustment value.
7. The control method of an air conditioner according to claim 1, wherein the generation method of the first target exhaust gas temperature includes:
acquiring a temperature parameter of a heat exchanger through a temperature sensor, wherein the temperature parameter of the heat exchanger comprises: indoor heat exchanger pipe temperature and outdoor heat exchanger pipe temperature;
acquiring the running frequency of a compressor of the air conditioner;
and inputting the indoor heat exchanger pipeline temperature, the outdoor heat exchanger pipeline temperature and the compressor running frequency into a preset algorithm model to obtain a first exhaust temperature.
8. The method for controlling an air conditioner according to claim 1, further comprising, before said obtaining an indoor ambient temperature of the air conditioner:
and after the air conditioner is powered on, heated and started, the electronic expansion valve is reset.
9. A controller comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the method of controlling an air conditioner according to any one of claims 1 to 8 when executing the computer program.
10. The controller according to claim 8, wherein the processor executes the computer program to perform the control method of the air conditioner according to any one of claims 1 to 8 at preset intervals.
11. An air conditioner characterized by comprising the controller according to claim 9 or 10.
12. A computer-readable storage medium characterized by storing computer-executable instructions for performing the control method of an air conditioner according to any one of claims 1 to 8.
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| CN115789908A (en) * | 2022-11-15 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Expansion valve opening degree control method and device of air conditioner and multi-connected air conditioner |
| CN115823693A (en) * | 2022-12-21 | 2023-03-21 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
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| CN110986334A (en) * | 2019-12-27 | 2020-04-10 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
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