CN112032936A - Frequency control method, storage medium and air conditioning system - Google Patents
Frequency control method, storage medium and air conditioning system Download PDFInfo
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- CN112032936A CN112032936A CN202010857338.4A CN202010857338A CN112032936A CN 112032936 A CN112032936 A CN 112032936A CN 202010857338 A CN202010857338 A CN 202010857338A CN 112032936 A CN112032936 A CN 112032936A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004378 air conditioning Methods 0.000 title claims abstract description 39
- 238000012937 correction Methods 0.000 claims description 92
- 238000004891 communication Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—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
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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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- 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
- F24F2140/50—Load
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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 frequency control method for an air conditioning system, which comprises the following steps: acquiring a first rated frequency and a first capacity demand value of an air conditioner external unit and a second capacity demand value corresponding to each target air conditioner internal unit, wherein the target air conditioner internal unit is an air conditioner internal unit in a running state; determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value; and determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner external unit to operate according to the target frequency. According to the frequency control method, the operation frequency of the compressor can be adjusted according to the capacity utilization rate of the air conditioner external unit, so that the operation frequency of the compressor meets the capacity requirement of the turned-on air conditioner internal unit, and the condition that the operation frequency of the compressor is not matched with the capacity requirement of the air conditioner internal unit due to overhigh or overlow operation frequency is avoided.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a frequency control method, a storage medium and an air conditioning system.
Background
At present, a household free-distribution multi-split air conditioning system mainly comprises an external unit and a plurality of indoor units which are matched with the external unit at the same time, and sometimes the external unit is also matched with indoor units of different types for simultaneous use. In the using process, because different numbers of indoor units are required to be started frequently, the situation that the frequency of a press of the indoor unit of the air conditioner is not matched with the capacity requirement of the indoor unit of the air conditioner often occurs, for example, the problem that the refrigerating capacity and the heating capacity of a compressor are insufficient or overhigh due to low or high frequency of the press is caused.
The prior art therefore remains to be improved.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, the present invention provides a frequency control method, a storage medium and an air conditioning system, which aims to overcome the problem that the operation frequency of the existing compressor is not matched with the capacity requirement of the air conditioner internal unit.
The technical scheme provided by the invention is as follows:
a frequency control method, for use in an air conditioning system, the method comprising:
acquiring a first rated frequency and a first capacity demand value of an air conditioner external unit and a second capacity demand value corresponding to each target air conditioner internal unit, wherein the target air conditioner internal unit is an air conditioner internal unit in a running state;
determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value;
and determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner external unit to operate according to the target frequency.
The frequency control method includes the steps of determining, according to the first capacity demand value and each second capacity demand value, a capacity utilization rate corresponding to the air conditioner external unit, specifically:
determining the total energy requirement values of all the target air conditioner internal units according to the second energy requirement values of all the target air conditioner internal units;
and determining the capacity utilization rate corresponding to the air conditioner external unit according to the total capacity demand value and the first capacity demand value.
The frequency control method comprises the steps of determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner outdoor unit to operate according to the target frequency:
determining a first target frequency according to the first rated frequency and the capacity utilization rate;
acquiring the respective corresponding ambient temperatures of the target air conditioner internal units, and determining a frequency correction coefficient according to the acquired ambient temperatures and the second capacity demand values;
correcting the first target frequency according to the frequency correction coefficient, and taking the corrected first target frequency as a target frequency;
and controlling a compressor of the air conditioner external unit to operate according to the target frequency.
The frequency control method includes the steps of obtaining respective corresponding ambient temperatures of the target air conditioner internal units, and determining a frequency correction coefficient according to the obtained ambient temperatures and the second capacity demand values:
obtaining respective corresponding ambient temperatures of each target air conditioner indoor unit, and determining the corresponding ambient temperature intervals of all the target air conditioner indoor units according to the ambient temperatures;
determining the total energy requirement values of all the target air conditioner internal units according to the second energy requirement values of all the target air conditioner internal units;
and determining a frequency correction coefficient according to the environment temperature interval and the total energy demand value.
The frequency control method, wherein the correcting the first target frequency according to the frequency correction coefficient and taking the corrected first target frequency as a target frequency further includes:
acquiring the inner disc temperature of each target air conditioner indoor unit, and determining a correction frequency according to each inner disc temperature, each environment temperature and the total energy demand value;
and adjusting the corrected first target frequency according to the correction frequency, and taking the adjusted first target frequency as the target frequency.
In the frequency control method, the obtaining of the inner panel temperature of each target air conditioner indoor unit, and the determining of the correction frequency according to each inner panel temperature, each ambient temperature, and the total energy demand value specifically include:
acquiring the inner disc temperature of each target air conditioner indoor unit, and determining the average inner disc temperature of all the target air conditioner indoor units according to the inner disc temperature;
determining the target temperatures of the inner discs of all the target air conditioner indoor units according to the ambient temperatures and the total energy demand values;
and determining a correction frequency according to the average temperature of the inner disc and the target temperature of the inner disc.
The frequency control method includes the following specific steps that the target temperatures of the inner discs of all the target air conditioner internal units are determined according to the ambient temperatures and the total energy demand value:
determining second environment temperature intervals corresponding to all the target air conditioner internal units according to the environment temperatures;
and determining the target temperature of the inner discs of all the target air conditioner internal units according to the second environment temperature interval and the total energy demand value.
In the frequency control method, the determining the correction frequency according to the average temperature of each inner disc and the target temperature of each inner disc specifically includes:
determining the difference value of the average temperature of the inner disc and the target temperature of the inner disc according to the average temperature of the inner disc and the target temperature of the inner disc;
and determining the correction frequency according to the difference.
A computer readable storage medium, wherein the computer readable storage medium stores one or more programs, which are executable by one or more processors, to implement steps in the frequency control method.
An air conditioning system, comprising: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;
the communication bus realizes connection communication between the processor and the memory;
the air conditioning system implements the steps in the frequency control method when executing the computer readable program.
Has the advantages that: the invention discloses a frequency control method for an air conditioning system, which comprises the following steps: acquiring a first rated frequency and a first capacity demand value of an air conditioner external unit and a second capacity demand value corresponding to each target air conditioner internal unit, wherein the target air conditioner internal unit is an air conditioner internal unit in a running state; determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value; and determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner external unit to operate according to the target frequency. According to the frequency control method, the operation frequency of the compressor can be adjusted according to the capacity utilization rate of the air conditioner external unit, so that the operation frequency of the compressor meets the capacity requirement of the turned-on air conditioner internal unit, and the condition that the operation frequency of the compressor of the air conditioner external unit is not matched with the capacity requirement of the air conditioner internal unit due to overhigh or overlow frequency is avoided.
Drawings
Fig. 1 is a flowchart of a frequency control method provided in the present embodiment;
fig. 2 is a schematic structural diagram of a terminal device provided in this embodiment.
Detailed Description
The present invention provides a frequency control method, and the present invention will be described in further detail below in order to make the objects, technical solutions, and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention is explained in detail below with reference to the embodiments in the attached figure 1.
As shown in fig. 1, this embodiment provides a frequency control method for an air conditioning system, where the air conditioning system includes an external air conditioner unit and a plurality of internal air conditioner units, and the method includes:
s100, a first rated frequency and a first capacity demand value of the air conditioner external unit and a second capacity demand value corresponding to each target air conditioner internal unit are obtained, wherein the target air conditioner internal unit is an air conditioner internal unit in a running state.
Specifically, the operation modes of the air conditioning system include a heating mode and a cooling mode, and the first rated frequency, the first capacity demand value and the second capacity demand value are different in different operation modes. In this embodiment, a cooling mode is taken as an example, and a frequency control method of an air conditioning system in the cooling mode is described in detail, it can be understood that the frequency control method of the air conditioning system in the cooling mode is the same as that in the heating mode, and the difference is that the obtained configuration parameters of the air conditioning external unit and the air conditioning internal unit are different.
The first rated frequency is used for reflecting the rated frequency of an air conditioner outdoor unit and is represented by Fw, the first rated frequencies in different operation modes are different, and the first rated frequency in the refrigeration mode is represented by FcShowing that the first rated frequency in the heating mode is FhAnd (4) showing.
The first capacity demand value is used for reflecting the rated capacity match of the air-conditioning outdoor unit, the unit of the first capacity demand value is represented by HP, the first capacity demand value is represented by Qw, the first capacity demand value of the air-conditioning outdoor unit is related to the model of the air-conditioning outdoor unit and the operation mode of the air-conditioning system, and the model of the air-conditioning outdoor unit can be represented by 'number + refrigeration unit (K)', for example, in the refrigeration mode, the corresponding first capacity demand value is 1.6HP for a 14K model of the air-conditioning outdoor unit, and the corresponding first capacity demand value is 3.3HP for a 30K model of the air-conditioning outdoor unit.
The second capacity demand value is used for reflecting capacity matching number of the target air conditioner indoor unit, and the corresponding capacity demand values of different air conditioner indoor units are respectively Q1，Q2，Q3…QnWherein, 1-n are the numbers of different air conditioner internal units. The second capacity requirement value is also related to the model of the air conditioner internal unit and the operation mode of the air conditioning system, and the model of the air conditioner internal unit can be represented by numbers, for example, in the cooling mode, the corresponding second capacity requirement value is 0.8HP for the air conditioner internal unit with the model of 22, and the corresponding second capacity requirement value is 2.0HP for the air conditioner internal unit with the model of 50.
Because the configuration parameters of the air conditioner external unit and the air conditioner internal unit are different in different operation modes, the first rated frequency and the first capacity requirement value of the air conditioner external unit and the second capacity requirement value corresponding to each target air conditioner internal unit are obtained, wherein the target air conditioner internal unit is specifically an air conditioner internal unit in an operation state:
s10, obtaining operation modes of the air conditioning system, wherein the operation modes comprise a heating mode and a cooling mode;
and S20, determining a first rated frequency and a first capacity requirement value of the air conditioner external unit and a second capacity requirement value corresponding to each target air conditioner internal unit according to the operation mode, wherein the target air conditioner internal unit is an air conditioner internal unit in an operation state.
Specifically, the operation mode of the air conditioning system can be determined by judging the operation mode of the air conditioner external unit, and it is noted that the configuration parameters of the air conditioner external unit and the air conditioner internal unit are different in different operation modes, so that the operation frequencies of the compressor are controlled to be different finally, and the frequency of the compressor can be controlled in different operation modes.
And S200, determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value.
Specifically, the capacity utilization rate corresponding to the air conditioner external unit can be obtained by the sum of the first capacity requirement value of the air conditioner external unit and the second capacity requirement values of all target air conditioner internal units, and the capacity utilization rate is used for subsequently calculating the target frequency of the air conditioner internal unit in the operation mode. It should be noted that, when the air conditioner internal unit is in a standby state or the air conditioner refrigeration reaches a set temperature, the capacity utilization rate corresponding to the air conditioner external unit is zero without correcting the operating frequency of the air conditioner internal unit. Correspondingly, the determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value specifically includes:
s201, determining total energy requirement values of all target air conditioner internal units according to second energy requirement values of the target air conditioner internal units;
s202, determining the capacity utilization rate corresponding to the air conditioner external unit according to the total capacity demand value and the first capacity demand value.
Specifically, the total energy requirement value of the target air conditioner indoor unit is the sum of the second energy requirement values of all the air conditioner indoor units in operation, and the total energy requirement value of the target air conditioner indoor unit is expressed by QmRepresents, then Qm＝Q1+Q2+Q3+…+QnAnd the corresponding capacity utilization rate of the air conditioner outdoor unit is represented by N, then
Therefore, the capacity utilization rate of the air conditioner external unit is related to the number of the target air conditioner internal units, the second capacity requirement value of each target air conditioner internal unit and the first capacity requirement value of the air conditioner external unit.
S300, determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner external unit to operate according to the target frequency.
Specifically, the target frequency is the frequency for controlling the operation of the compressor of the air conditioner external unit, the operation frequency of the compressor is determined according to the capacity utilization rate, and when the number of target air conditioner internal units or the total capacity demand value of all the target air conditioner internal units changes, the compressors can be controlled to operate at different frequencies, so that the control of the frequency of the compressor of the air conditioner external unit is realized, and the situation that the capacity demand of the air conditioner internal units is not matched with the operation frequency of the compressor is avoided.
In this embodiment, the determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling the compressor of the outdoor unit of the air conditioner to operate according to the target frequency specifically includes:
s301, determining a first target frequency according to the first rated frequency and the capacity utilization rate;
s302, obtaining respective corresponding ambient temperatures of each target air conditioner internal unit, and determining a correction coefficient according to the obtained ambient temperatures and the second capacity demand values;
s303, correcting the first target frequency according to the correction coefficient, and taking the corrected first target frequency as a target frequency;
and S304, controlling a compressor of the air conditioner external unit to operate according to the target frequency.
Specifically, a first target frequency of the air conditioner internal unit in the operation mode can be determined according to the first rated frequency and the capacity utilization rate corresponding to the air conditioner external unit, so that the rough range of the operation frequency of the compressor is determined through the first target frequency. Wherein the first target frequency is determined by a first frequency calculation formula, and the first target frequency is FitExpressed as F, the first frequency calculation formulait＝N*FwThen in the cooling mode, F is calculated by the first frequency calculation formulait＝N*FcA first target frequency in the cooling mode may be obtained.
The environment temperature is the indoor temperature of each air conditioner indoor unit, and the environment temperature is T4The correction coefficient is related to the ambient temperature of the target air conditioner indoor unit and the total energy demand value of the target air conditioner indoor unit, and is expressed by K1And (4) showing. Correcting the target frequency by the correction coefficient to obtain a corrected first target frequency, wherein the corrected first target frequency is FtWherein the corrected first target frequency is obtained by a second frequency calculation formula, and the second frequency calculation formula is: ft＝Fit*K1Therefore, the specific numerical value of the corrected first target frequency is calculated according to the first target frequency and the correction coefficient. Correspondingly, the obtaining of the respective corresponding ambient temperatures of the target air conditioner internal units, and the determining of the correction coefficient according to the obtained ambient temperatures and the second capacity demand values specifically include:
s3021, obtaining each environment temperature corresponding to each target air conditioner indoor unit, and determining a first environment temperature interval corresponding to all the target air conditioner indoor units according to each environment temperature;
s3022, determining total energy demand values of all target air conditioner internal units according to the second capacity demand values of the target air conditioner internal units;
and S3023, determining a correction coefficient according to the first environment temperature interval and the total energy demand value.
Specifically, the corresponding relationship between the correction coefficient and the total energy demand value and between the correction coefficient and each ambient temperature is preset as follows: under the condition that the total energy demand values are the same, when the corresponding environment temperatures of the target air conditioner internal units are different, the correction coefficients corresponding to different environment temperatures are different; when the environment temperature corresponding to each target air conditioner indoor unit is not changed, the total number of the target air conditioner indoor units is changed, the total energy requirement values of all the target air conditioners are changed, and then the correction coefficients corresponding to different total energy requirement values are also different, so that when the environment temperature is changed or the number of the target air conditioner indoor units is changed, the operation frequency of the compressor is controlled to be adjusted according to the correction coefficients, and the condition that the energy requirements of the air conditioner indoor units are not matched with the operation frequency of the compressor is avoided.
In an implementation manner of this embodiment, a preset correction coefficient table is stored in the air conditioning system, where the preset correction coefficient table stores a preset total energy demand value table, a first preset environment temperature interval table, and a corresponding relationship between a correction coefficient and different total energy demand values and different preset environment temperature intervals, where the first preset environment temperature interval table includes different preset environment temperature intervals, the preset total energy demand value table includes different preset total energy demand values, and the correction coefficient is determined by the preset environment temperature interval and the total energy demand value together, that is, the correction coefficient table may determine: and under different total energy requirement values, the corresponding relations between the plurality of first preset environment temperature intervals and the correction coefficients, or under different first preset environment temperature intervals, the corresponding relations between the different total energy requirement values and the correction coefficients. And determining a first environment temperature interval corresponding to all target air conditioner internal units according to the respective corresponding environment temperature of each target air conditioner internal unit through the preset correction coefficient table, and further determining the correction coefficient through the first environment temperature interval and the total energy requirement value of all the target air conditioners.
When the target air conditioner indoor unit is at different temperatures, the first environment temperature intervals corresponding to the target air conditioner indoor unit are different, and the first environment temperature intervals are different in different seasons, such as winter and summer, so that different correction coefficients can be obtained according to the different first environment temperature intervals under the condition that the total energy requirement values of the target air conditioner indoor unit are the same, the running frequency of the compressor can be controlled according to the different correction coefficients in different seasons, and the problem that the refrigerating and heating capacities of the compressor are insufficient or overhigh due to seasonal changes can be solved; under the same first environment temperature range, when the number of the air-target air-conditioning indoor units changes, different correction coefficients can be obtained according to different total energy requirement values, so that the running frequency of the compressor can be controlled at different target frequencies according to different correction coefficients when the number of the running air-conditioning indoor units changes, and the problems of insufficient or overhigh refrigerating and heating capacities of the compressor caused by the change of the number of the running air-conditioning indoor units can be solved
It can be understood that, for the preset correction coefficient table, the environmental temperatures of different target air conditioner internal units may be slightly different, so that the environmental temperatures corresponding to the target air conditioner internal units may be located in different preset environmental temperature intervals.
In an implementation manner of this embodiment, a preset correction coefficient table is stored in the air conditioning system, the preset correction coefficient table stores different ambient temperature intervals and different total energy demand intervals, a correction coefficient corresponding to each temperature interval and each total energy demand interval is also determined, and after the first ambient temperature interval and the total energy demand are determined, a specific value of the correction coefficient may be obtained according to the preset correction coefficient table.
In a specific implementation manner of this embodiment, the correction coefficient may be determined according to the preset correction coefficient table:
1) when the total energy demand value Q of the target air conditioner indoor unitmWhen the HP is less than or equal to 1.3, the correction coefficients are all 1.2 in different environmental temperature intervals;
2) when the total energy demand value of the target air conditioner internal unit is more than 1.3 and less than QmWhen the HP is less than or equal to 1.8, the correction coefficients are all 1.0 in different environmental temperature intervals;
3) when the total energy demand value of the target air conditioner indoor unit is more than 1.8 and less than QmAt 2.8HP, for different ambient temperature intervals:
if the first environment temperature interval is T4The correction coefficient is 1.0 when the temperature is higher than 40 ℃;
if the first environment temperature interval is more than 30T4The correction coefficient is 1.1 at the temperature of less than or equal to 40 ℃;
if the first environment temperature interval is more than 25 < T4The correction coefficient is 1.0 at the temperature of less than or equal to 30 ℃;
if the first environment temperature interval is more than 17 and less than T4The correction coefficient is 0.9 at the temperature of less than or equal to 25 ℃;
if the first environment temperature interval is more than 17 and less than T4The correction coefficient is 0.8 at the temperature of less than or equal to 25 ℃.
In this embodiment, after the correcting the first target frequency according to the correction coefficient and taking the corrected first target frequency as the target frequency, the method further includes:
m10, acquiring the inner plate temperature of each target air conditioner indoor unit, and determining a correction frequency according to each inner plate temperature, each environment temperature and the total energy demand value;
and M20, adjusting the corrected first target frequency according to the correction frequency, and taking the adjusted first target frequency as the target frequency.
Specifically, the inner plate temperature refers to the temperature of an inner coil of an air conditioner, and the inner plate temperature is measured by IPTnIt is shown that,and n represents the number of the air conditioner indoor unit, and the correction frequency is determined according to the temperature of each inner coil, the temperature of each environment and the total energy demand value, so that the correction frequency can be determined according to the working state of the inner coil of the air conditioner indoor unit, and the frequency of the compressor is adjusted according to the correction frequency. The compressor operates according to the adjusted frequency, the operation frequency of the compressor can be adjusted according to the equivalent value of the capacity requirement value, the inner disc temperature and the environment temperature of the target air conditioner indoor unit, the operation frequency of the compressor meets the capacity requirement of the started target air conditioner indoor unit, meanwhile, the operation frequency of the compressor is ensured to be within a certain range, and the condition that the operation frequency of the compressor of the air conditioner outdoor unit is not matched with the capacity requirement of the air conditioner indoor unit due to overhigh or overlow frequency is avoided.
In this embodiment, the obtaining of the inner panel temperatures of the target air conditioner internal units, and determining the correction frequency according to the inner panel temperatures, the ambient temperatures, and the total energy demand value specifically include:
m101, obtaining the inner disc temperature of each target air conditioner indoor unit, and determining the average inner disc temperature of all the target air conditioner indoor units according to the inner disc temperature;
m102, determining the target temperatures of the inner discs of all the target air conditioner indoor units according to the ambient temperatures and the total energy demand values;
and M103, determining a correction frequency according to the average temperature of the inner disc and the target temperature of the inner disc.
Specifically, the inner disc target temperature refers to the inner disc target temperature of an air conditioner indoor unit obtained according to a preset inner disc target temperature table and is measured by IPTtgtxThis is shown to be related to the number of target air conditioner indoor units, the second capacity requirement value of each target air conditioner indoor unit, and the ambient temperature at which the target air conditioner indoor unit is located. The average temperature of the inner disc refers to the average value of the inner disc temperatures of all target air conditioner internal units, and the average temperature of the inner disc is measured by IPTxIs shown, then IPTx＝(IPT1+IPT2+IPT3+…IPTn) The corrected target frequency is used for fine adjustment to obtain an adjusted target frequency, and the correction is carried outFrequency Δ FXAnd (4) showing.
In this embodiment, the determining the target temperatures of the inner panels of all the target air conditioner internal units according to the ambient temperature interval and the total energy requirement value specifically includes:
m1021, determining second environment temperature intervals corresponding to all the target air conditioner internal units according to the environment temperatures;
and M1022, determining the target temperature of the inner disc of all the target air conditioner indoor units according to the second environment temperature interval and the total energy demand value.
In an implementation manner of this embodiment, a preset inner panel target temperature table is stored in the air conditioning system, and the preset inner panel target temperature table stores a preset total energy demand value table, a second preset environment temperature interval table, and a corresponding relationship between an inner panel target temperature and different total energy demand values and different preset environment temperature intervals, where the second preset environment temperature interval table includes different preset environment temperature intervals, the preset total energy demand value table includes different preset total energy demand values, and the inner panel target temperature is determined by the preset environment temperature interval and the total energy demand values together. That is, the inner disc target temperature table may determine: under different total energy demand values, the corresponding relation between the plurality of preset environment temperature intervals and the target temperature of the inner disc, or under different preset environment temperature intervals, the corresponding relation between the different total energy demand values and the target temperature of the inner disc, so that under the conditions that the second environment temperature interval is determined according to the environment temperatures of all target air conditioner internal units and the corresponding capacity utilization rate of the air conditioner external unit is determined, the target temperature of the inner disc can be obtained according to the preset inner disc target temperature table, and the correction frequency can be determined. In this embodiment, the division of the ambient temperature interval of the second preset ambient temperature table in the preset inner disc target temperature table and the division of the ambient temperature interval of the first preset ambient temperature table in the preset correction coefficient table may be the same or different.
It can be understood that, to the above-mentioned preset inner disc target thermometer, the ambient temperatures at which different target air conditioner internal units are located may be slightly different, so that the ambient temperatures corresponding to the target air conditioner internal units may be in different preset ambient temperature intervals, in practical application, the preset ambient temperature interval at which the target air conditioner internal unit with the largest number is located may be selected as the second ambient temperature interval, and the preset ambient temperature interval may also be used as the second ambient temperature interval by the average value of the corresponding ambient temperatures of the target air conditioner internal units.
In a specific implementation manner of this embodiment, the correction frequency may be determined according to the preset inner disc target temperature table:
1) when the total power demand value Qm1.3HP, for different ambient temperature intervals:
if the second environment temperature interval is T4The target temperature of the inner disc is more than 35 ℃ and 11 ℃;
if the second environment temperature interval is more than 23T4The temperature of the inner disc is not more than 35 ℃, and the target temperature of the inner disc is 12 ℃;
if the second environment temperature interval is T4The temperature of the inner disc is not more than 23 ℃, and the target temperature of the inner disc is 13 ℃;
2) when the total energy demand value is more than 1.3 and less than Qm1.5HP, for different ambient temperature intervals:
if the second environment temperature interval is T4The target temperature of the inner disc is 10 ℃ when the temperature is more than 35 ℃;
if the second environment temperature interval is more than 23T4The temperature of the inner disc is not more than 35 ℃, and the target temperature of the inner disc is 11 ℃;
if the second environment temperature interval is T4The temperature of the inner disc is less than or equal to 23 ℃, and the target temperature of the inner disc is 12 ℃.
And adjusting the corrected first target frequency through the correction frequency to obtain an adjusted first target frequency, wherein the adjusted first target frequency is represented by F. Adjusting the modified first target frequency through a third frequency calculation formula to obtain a specific numerical value of the adjusted target frequency, wherein the third frequency calculation formula is as follows: f ═ Ft+ΔFXAnd further taking the adjusted first target frequency as the target frequencyAnd the compressor is controlled to operate according to the target frequency, so that the operation frequency of the compressor of the air conditioner external unit is controlled, the operation frequency of the compressor of the air conditioner external unit is matched with the capacity requirements of all target air conditioner internal units, and the condition of energy waste caused by overhigh refrigerating capacity and heating capacity due to overhigh frequency is avoided. . Correspondingly, the determining the correction frequency according to the inner disc average temperature and the inner disc target temperature specifically includes:
l10, determining the difference value of the average temperature of the inner disc and the target temperature of the inner disc;
l20, determining the correction frequency according to the difference.
Specifically, the corresponding relation between different difference values and correction frequency is stored in the air conditioning system in advance, and the difference values are measured by IPTx-IPTtgtxIt is shown that after determining the difference between the average inner disc temperature and the target inner disc temperature, a specific value of the correction frequency can be determined, so as to adjust the corrected first target frequency by the correction frequency.
It should be noted that, in this embodiment, after the first target frequency is determined according to the first rated frequency and the capacity utilization rate, the correction and adjustment of the first target frequency are performed periodically, and a period of the correction and adjustment of the first target frequency may be set according to a use requirement, for example, the period may be 2 min.
In a specific implementation manner of this embodiment, a cooling mode is taken as an example, and the difference value IPT is used as the basisx-IPTtgtxThe correction frequency can be determined:
if the temperature is less than or equal to 1 ℃ and is equal to or less than IPTx-IPTtgtxIf < 4 ℃, the correction frequency delta FX＝+2Hz；
If IPTx-IPTtgtxThe correction frequency delta F is more than or equal to 4 DEG CX＝IPTx-IPTtgtxWherein, Δ FXThe maximum does not exceed 10 Hz;
if IPTx-IPTtgtxAt ≦ 1 ℃, the correction frequency is determined as follows:
if IPTx1≤IPTx0+0.5 deg.C, the correction frequency Δ FX＝-2Hz；
If IPTx1＞IPTx0+0.5 deg.C, the correction frequency Δ FX＝0Hz；
Wherein, IPTx1Indicating the average temperature of the inner tube, IPT, during the current frequency correction periodx0Indicating the average temperature of the inner tube during the previous correction period.
Furthermore, after the correction frequency is determined, the first target frequency after modification is adjusted through the correction frequency, the adjusted first target frequency is used as the target frequency, the compressor is controlled to operate according to the target frequency, the operation frequency of the compressor can be further adjusted according to the operation state of the air conditioner internal unit, the reasonable control frequency according to the working state of the air conditioner internal disc is achieved, and the situations of insufficient refrigerating or heating capacity and energy waste of the air conditioner external unit caused by the fact that the operation frequency of the compressor is not matched with the demand of the air conditioner internal unit are further avoided.
A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement steps in the frequency control method.
The present invention also provides an air conditioning system, as shown in fig. 2, which includes at least one processor (processor) 20; a display screen 21; and a memory (memory)22, and may further include a communication Interface (Communications Interface)23 and a bus 24. The processor 20, the display 21, the memory 22 and the communication interface 23 can communicate with each other through the bus 24. The display screen 21 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 23 may transmit information. The processor 20 may call logic instructions in the memory 22 to perform the methods in the embodiments described above.
Furthermore, the logic instructions in the memory 22 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 22, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 20 executes the functional application and data processing, i.e. implements the method in the above-described embodiments, by executing the software program, instructions or modules stored in the memory 22.
The memory 22 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 22 may include a high speed random access memory and may also include a non-volatile memory. For example, a variety of media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, may also be transient storage media.
In addition, the specific processes loaded and executed by the storage medium and the instruction processors in the mobile terminal are described in detail in the method, and are not stated herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A frequency control method for an air conditioning system, the method comprising:
acquiring a first rated frequency and a first capacity demand value of an air conditioner external unit and a second capacity demand value corresponding to each target air conditioner internal unit, wherein the target air conditioner internal unit is an air conditioner internal unit in a running state;
determining the capacity utilization rate corresponding to the air conditioner external unit according to the first capacity demand value and each second capacity demand value;
and determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the air conditioner external unit to operate according to the target frequency.
2. The frequency control method according to claim 1, wherein the determining, according to the first capacity demand value and each second capacity demand value, a capacity utilization rate corresponding to the air-conditioning outdoor unit specifically includes:
determining the total energy requirement values of all the target air conditioner internal units according to the second energy requirement values of all the target air conditioner internal units;
and determining the capacity utilization rate corresponding to the air conditioner external unit according to the total capacity demand value and the first capacity demand value.
3. The frequency control method according to claim 1, wherein the determining a target frequency according to the first rated frequency and the capacity utilization rate, and controlling a compressor of the outdoor unit of the air conditioner to operate according to the target frequency specifically comprises:
determining a first target frequency according to the first rated frequency and the capacity utilization rate;
acquiring the respective corresponding ambient temperatures of the target air conditioner internal units, and determining a frequency correction coefficient according to the acquired ambient temperatures and the second capacity demand values;
correcting the first target frequency according to the frequency correction coefficient, and taking the corrected first target frequency as a target frequency;
and controlling a compressor of the air conditioner external unit to operate according to the target frequency.
4. The frequency control method according to claim 3, wherein the obtaining of the respective ambient temperatures of the target air conditioner internal units, and the determining of the frequency correction coefficient according to the obtained respective ambient temperatures and the respective second capacity requirement values specifically include:
obtaining respective corresponding ambient temperatures of each target air conditioner indoor unit, and determining the corresponding ambient temperature intervals of all the target air conditioner indoor units according to the ambient temperatures;
determining the total energy requirement values of all the target air conditioner internal units according to the second energy requirement values of all the target air conditioner internal units;
and determining a frequency correction coefficient according to the environment temperature interval and the total energy demand value.
5. The frequency control method according to claim 3, wherein the step of correcting the first target frequency according to the frequency correction coefficient and using the corrected first target frequency as a target frequency further comprises:
acquiring the inner disc temperature of each target air conditioner indoor unit, and determining a correction frequency according to each inner disc temperature, each environment temperature and the total energy demand value;
and adjusting the corrected first target frequency according to the correction frequency, and taking the adjusted first target frequency as the target frequency.
6. The frequency control method according to claim 5, wherein the obtaining of the inner panel temperature of each of the target air conditioner indoor units, and the determining of the correction frequency according to each of the inner panel temperature, each of the ambient temperatures, and the total energy demand value are specifically:
acquiring the inner disc temperature of each target air conditioner indoor unit, and determining the average inner disc temperature of all the target air conditioner indoor units according to the inner disc temperature;
determining the target temperatures of the inner discs of all the target air conditioner indoor units according to the ambient temperatures and the total energy demand values;
and determining a correction frequency according to the average temperature of the inner disc and the target temperature of the inner disc.
7. The frequency control method according to claim 6, wherein the determining the target inner panel temperatures of all the target air conditioner indoor units according to the respective ambient temperatures and the total energy demand values specifically includes:
determining second environment temperature intervals corresponding to all the target air conditioner internal units according to the environment temperatures;
and determining the target temperature of the inner discs of all the target air conditioner internal units according to the second environment temperature interval and the total energy demand value.
8. The frequency control method according to claim 7, wherein the determining the correction frequency according to the average temperature of each inner disc and the target temperature of each inner disc is specifically:
determining the difference value of the average temperature of the inner disc and the target temperature of the inner disc according to the average temperature of the inner disc and the target temperature of the inner disc;
and determining the correction frequency according to the difference.
9. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of the frequency control method according to any one of claims 1-8.
10. An air conditioning system, comprising: a processor, a memory, and a communication bus; the memory has stored thereon a computer readable program executable by the processor;
the communication bus realizes connection communication between the processor and the memory;
the air conditioning system implementing the steps in the frequency control method according to any one of claims 1 to 8 when executing the computer readable program.
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