CN108800479B - Control method and device for multi-split air conditioner and computer readable storage medium - Google Patents
Control method and device for multi-split air conditioner and computer readable storage medium Download PDFInfo
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- CN108800479B CN108800479B CN201810610622.4A CN201810610622A CN108800479B CN 108800479 B CN108800479 B CN 108800479B CN 201810610622 A CN201810610622 A CN 201810610622A CN 108800479 B CN108800479 B CN 108800479B
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The invention discloses a control method of a multi-split air conditioner, which comprises the following steps: when the indoor unit is started, acquiring an outdoor environment temperature value and a nominal capacity value of the indoor unit to be started; determining the initial opening degree of an electronic expansion valve in an indoor unit to be opened according to the outdoor environment temperature value and the nominal capacity value; and controlling the electronic expansion valve of the indoor unit to be opened to an initial opening degree. The invention also discloses a control device and a computer readable storage medium of the multi-split air conditioner. The invention determines the initial opening degree of the electronic expansion valve in the indoor unit to be opened through the outdoor environment temperature value and the nominal capacity value of the indoor unit to be opened, and controls the electronic expansion valve of the indoor unit to be opened to the initial opening degree, thus realizing the adjustment of the initial opening degree of the electronic expansion valve of the indoor unit according to the outdoor environment change, further realizing the optimization of the heating capacity of the multi-split air conditioner, improving the heating effect of the multi-split air conditioner and improving the output of the heating capacity.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device of a multi-split air conditioner and a computer readable storage medium.
Background
The multi-split air conditioner is an air conditioner with one outdoor unit connected with a plurality of indoor units, is mainly suitable for families, and is mainly used for reducing the arrangement and installation of the outdoor units. The one-split-multi air conditioner has a heat pump type one-split-multi air conditioner and a refrigeration type one-split-multi air conditioner. At present, when a heat pump type heating system operates, when an indoor unit is opened, the opening of an electronic expansion valve is a fixed initial opening when the indoor unit does not operate in an outdoor environment, when the indoor unit operates in heating at different outdoor environment temperatures, requirements for the initial opening of the electronic expansion valve are different, the initial opening of the electronic expansion valve is set to be a fixed value based on the existing system, when an air conditioner operates in different outdoor environments, the initial opening of the electronic expansion valve of the indoor unit is the fixed value, adjustment cannot be made according to outdoor environment changes, and therefore the heating capacity of the air conditioner cannot be rapidly and effectively achieved to be in an optimal state.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method and a control device for a multi-split air conditioner and a computer readable storage medium, and aims to solve the technical problem that the initial opening degree of an electronic expansion valve of an internal machine in the existing multi-split air conditioner system is a fixed value, and the air conditioner cannot be adjusted according to the change of outdoor environment when the air conditioner is started under different outdoor environments, so that the heating capacity of the air conditioner cannot be rapidly and effectively kept in an optimal state.
In order to achieve the above object, the present invention provides a method for controlling a multi-split air conditioner, where the multi-split air conditioner includes an outdoor unit and a plurality of indoor units connected to the outdoor unit, and the method includes the following steps:
when the indoor unit is started, acquiring an outdoor environment temperature value and a nominal capacity value of the indoor unit to be started;
determining the initial opening degree of an electronic expansion valve in the indoor unit to be started according to the outdoor environment temperature value and the nominal capacity value;
and controlling the electronic expansion valve of the indoor unit to be started to be opened to the initial opening degree.
Preferably, the step of determining an initial opening degree of an electronic expansion valve in the indoor unit to be opened according to the outdoor environment temperature value and the nominal capacity value includes:
acquiring a reference opening degree of an electronic expansion valve in the indoor unit to be opened;
determining a correction coefficient of the reference opening according to the outdoor environment temperature value and the nominal capacity value;
and determining the initial opening of the electronic expansion valve in the indoor unit to be opened according to the reference opening and the correction coefficient.
Preferably, the correction coefficient includes a first correction coefficient and a second correction coefficient, and the step of determining the correction coefficient of the reference opening degree according to the outdoor ambient temperature and the nominal capacity value includes:
acquiring a first correction coefficient corresponding to the outdoor environment temperature value;
and acquiring a second correction coefficient corresponding to the nominal capacity value.
Preferably, the step of obtaining a first correction coefficient corresponding to the outdoor environment temperature value includes:
acquiring a temperature value interval corresponding to the outdoor environment temperature value;
and determining the corresponding first correction coefficient according to the temperature value interval.
Preferably, the step of obtaining a second correction coefficient corresponding to the nominal capacity value includes:
acquiring a nominal capacity value interval corresponding to the nominal capacity value;
and determining the corresponding second correction coefficient according to the nominal capacity value interval.
Preferably, the method for controlling a multi-split air conditioner further includes:
when an indoor unit is started, acquiring a preset opening degree of an electronic expansion valve in the unopened indoor unit;
and when the electronic expansion valve in the indoor unit to be started is controlled to be opened to the initial opening, the electronic expansion valve in the indoor unit which is not started is controlled to be adjusted to the preset opening.
Preferably, the method for controlling a multi-split air conditioner further includes:
when an indoor unit to be started is started, acquiring the running mode of the indoor unit to be started;
and when the operation mode of the indoor unit to be started is a heating mode, executing the step of acquiring the outdoor environment temperature value and the nominal capacity value of the indoor unit.
In order to achieve the above object, the present invention also provides a control device of a multi-split air conditioner, the control device including: the multi-split air conditioner control method comprises a memory, a processor and a multi-split air conditioner control program which is stored on the memory and can run on the processor, wherein the multi-split air conditioner control program realizes the multi-split air conditioner control method when being executed by the processor.
Preferably, the control device includes at least one of a multi-split air conditioner and a control terminal.
In addition, the present invention provides a computer readable storage medium having a multi-airconditioner control program stored thereon, which, when executed by a processor, implements the control method of the multi-airconditioner as described above.
According to the control method and device for the multi-split air conditioner and the computer storage medium, when the indoor unit is started, the outdoor environment temperature value and the nominal capacity value of the indoor unit to be started are obtained, the initial opening degree of the electronic expansion valve in the indoor unit to be started is determined according to the outdoor environment temperature value and the nominal capacity value, the electronic expansion valve of the indoor unit to be started is controlled to be opened to the initial opening degree, and therefore the initial opening degree of the electronic expansion valve of the indoor unit is adjusted according to outdoor environment changes, the heating capacity of the multi-split air conditioner is optimized, the heating effect of the multi-split air conditioner is improved, and the heating capacity output is improved.
Drawings
Fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for controlling a multi-split air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method for a multi-split air conditioner according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart of step S220 in FIG. 3;
FIG. 5 is a flowchart illustrating a control method for a multi-split air conditioner according to a third embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of a multi-split air conditioner according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: when the indoor unit is started, acquiring an outdoor environment temperature value and a nominal capacity value of the indoor unit to be started; determining the initial opening degree of an electronic expansion valve in the indoor unit to be started according to the outdoor environment temperature value and the nominal capacity value; and controlling the electronic expansion valve of the indoor unit to be started to be opened to the initial opening degree.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The device of the embodiment of the invention can be an air conditioner, and can also be control equipment such as a PC, a smart phone, a tablet personal computer, a portable computer, a remote controller and the like connected with the air conditioner. When other equipment is arranged outside the air conditioner, the other equipment is started by the air conditioner outdoor fan, the current switching frequency of the air conditioner outdoor classification is obtained in the running process of the compressor, the switching frequency is adjusted, and then the switching frequency is controlled to run in a variable frequency mode in the running process of the outdoor fan.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the device may also include a camera, RF (Radio Frequency) circuitry, sensors, audio circuitry, WiFi modules, detectors (magnetic ring + hall sensor), and the like. In which a sensor such as an image sensor, an infrared sensor, a temperature sensor, and other sensors such as a temperature sensor is disposed at an outlet of an outdoor unit of an air conditioner or at a casing of the outdoor unit, for detecting an outdoor ambient temperature. Of course, the device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and a temperature sensor, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting of the apparatus, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a multi-airconditioner control program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and processor 1001 may be configured to call a multi-airconditioner control program stored in memory 1005, and perform the following operations:
when the indoor unit is started, acquiring an outdoor environment temperature value and a nominal capacity value of the indoor unit to be started;
determining the initial opening degree of an electronic expansion valve in the indoor unit to be started according to the outdoor environment temperature value and the nominal capacity value;
and controlling the electronic expansion valve of the indoor unit to be started to be opened to the initial opening degree.
Further, the processor 1001 may be configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
acquiring a reference opening degree of an electronic expansion valve in the indoor unit to be opened;
determining a correction coefficient of the reference opening according to the outdoor environment temperature value and the nominal capacity value;
and determining the initial opening of the electronic expansion valve in the indoor unit to be opened according to the reference opening and the correction coefficient.
Further, the processor 1001 may be configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
acquiring a first correction coefficient corresponding to the outdoor environment temperature value;
and acquiring a second correction coefficient corresponding to the nominal capacity value.
Further, the processor 1001 may be configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
acquiring a temperature value interval corresponding to the outdoor environment temperature value;
and determining the corresponding first correction coefficient according to the temperature value interval.
Further, the processor 1001 may be configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
acquiring a nominal capacity value interval corresponding to the nominal capacity value;
and determining the corresponding second correction coefficient according to the nominal capacity value interval.
Further, the processor 1001 may be further configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
when an indoor unit is started, acquiring a preset opening degree of an electronic expansion valve in the unopened indoor unit;
and when the electronic expansion valve in the indoor unit to be started is controlled to be opened to the initial opening, the electronic expansion valve in the indoor unit which is not started is controlled to be adjusted to the preset opening.
Further, the processor 1001 may be further configured to call a multi-airconditioning control program stored in the memory 1005, and perform the following operations:
when an indoor unit to be started is started, acquiring the running mode of the indoor unit to be started;
and when the operation mode of the indoor unit to be started is a heating mode, executing the step of acquiring the outdoor environment temperature value and the nominal capacity value of the indoor unit.
Referring to fig. 2, a first embodiment of the present invention provides a control method of a multi-split air conditioner, including:
step S10, when the indoor unit is started, obtaining the outdoor environment temperature value and the nominal capacity value of the indoor unit to be started;
the embodiment is operated on a multi-split air conditioner or a multi-split air conditioner control device, and the multi-split air conditioner controller comprises a mobile terminal or an intelligent remote controller and the like. The multi-split air conditioner comprises an outdoor unit and a plurality of indoor units connected with the outdoor unit, the indoor units can be arranged in different rooms, the indoor units are connected with the outdoor unit, the indoor units can be selectively opened, namely when one or more indoor units are opened, other indoor units are not opened and are in a closed state, so that the indoor unit can be opened in a room where people are located.
In the embodiment, when the remote controller inputs the opening instruction, the indoor unit executes the opening operation; or based on the intelligent control setting, when the user information is detected in the room, the indoor unit executes the opening operation; or when the preset time point is reached, the indoor unit executes the opening operation and the like. It can be understood that the triggering instruction for the opening operation of the indoor unit may be in other manners, which are not described herein again.
The method comprises the steps that the nominal capacity values are capacity values of indoor units, the nominal capacity values of the indoor units are different based on different models or section forces of the indoor units, a plurality of indoor units to be opened are provided, the nominal capacity values of the indoor units to be opened are obtained when the nominal capacity values of the indoor units to be opened are different, and initial opening degrees of electronic expansion valves corresponding to the indoor units to be opened in the optimal heating capacities are different based on the different nominal capacity values, so that the initial opening degrees of the electronic expansion valves in the indoor units to be opened are required to be controlled to be different.
Step S20, determining the initial opening degree of the electronic expansion valve in the indoor unit to be opened according to the outdoor environment temperature value and the nominal capacity value;
and step S30, controlling the electronic expansion valve of the indoor unit to be opened to the initial opening degree.
In the implementation, the adjustment of the initial opening degree of the electronic expansion valve in the indoor unit to be started is associated with the outdoor environment temperature and the nominal capacity of the indoor unit, the opening degree of the electronic expansion valve is determined according to the outdoor environment temperature value and the nominal capacity, and if the outdoor environment temperature is low and the multi-split air conditioner heats, the initial opening degree of the electronic expansion valve of the indoor unit with the same section force needs to be relatively reduced so as to quickly achieve the optimal heating effect; when the outdoor environment temperature is high and one-drive-many heating is performed, in order to achieve the optimal heating effect, the initial opening degree of the electronic expansion valve of the indoor unit with the same section force needs to be relatively increased. Presetting each outdoor environment temperature value to be respectively associated with different nominal capacity values, mapping the initial opening degree of an electronic expansion valve, and determining the initial opening degree of the corresponding electronic expansion valve according to the outdoor environment temperature value and the nominal capacity value when the initial opening degree of the electronic expansion valve in the indoor unit to be started is adjusted.
If the nominal capacity values of the indoor units to be opened are different, determining the initial opening degree of the electronic expansion valve in each indoor unit to be opened based on the outdoor environment temperature value and each nominal capacity value, controlling the electronic expansion valve of each indoor unit to be opened to the initial opening degree of the electronic expansion valve corresponding to each indoor unit to be opened respectively, adjusting the electronic expansion valve in each indoor unit to be opened respectively, and realizing the optimization of the heating effect of each indoor unit to be opened.
In this embodiment, when an indoor unit is started, an outdoor environment temperature value and a nominal capacity value of the indoor unit to be started are obtained, an initial opening degree of an electronic expansion valve in the indoor unit to be started is determined according to the outdoor environment temperature value and the nominal capacity value, and the electronic expansion valve of the indoor unit to be started is controlled to be opened to the initial opening degree, so that the initial opening degree of the electronic expansion valve of the indoor unit to be started is adjusted according to outdoor environment changes, and therefore, the heating capacity of the multi-split air conditioner is optimized, the heating effect of the multi-split air conditioner is improved, and the heating capacity output is improved.
Referring to fig. 3, the present invention provides a second embodiment of a control method for a multi-split air conditioner, which is based on the above-mentioned embodiment shown in fig. 2, wherein the step of determining an initial opening degree of an electronic expansion valve in the indoor unit to be opened according to the outdoor environment temperature value and the nominal capacity value comprises:
step S210, acquiring a reference opening degree of an electronic expansion valve in the indoor unit to be opened;
the standard opening degree of the electronic expansion valve is a fixed initial opening degree preset when an air conditioner indoor unit leaves a factory, and in an air conditioner system without the function of adjusting the initial opening degree, when the indoor unit is opened, the opening degree of the electronic expansion valve in the indoor unit is opened according to the standard opening degree. The reference opening degree of the present embodiment may preferably be 220 steps.
Step S220, determining a correction coefficient of the reference opening according to the outdoor environment temperature value and the nominal capacity value; if the indoor unit to be started has the same section force, determining a corresponding correction coefficient according to the difference of the outdoor environment temperature values, and correcting the reference opening degree through the correction coefficient; if the indoor unit is to be started under different force sections, determining a corresponding correction coefficient according to the difference between the outdoor environment temperature value and the nominal capacity value, and correcting the reference opening degree through the correction coefficient.
The step of determining the correction coefficient of the reference opening degree according to the outdoor environment temperature and the nominal capacity value includes:
step S221, acquiring a first correction coefficient corresponding to the outdoor environment temperature value;
based on different outdoor environment temperature values and different requirements on the initial opening degree and the capacity of an electronic expansion valve in an indoor unit, the initial opening degree requirements of the electronic expansion valve in the indoor unit are different, so that the correction coefficients comprise a first correction coefficient corresponding to the outdoor environment temperature value and a second correction coefficient corresponding to the nominal capacity value.
In this embodiment, a first correction coefficient corresponding to each outdoor environment temperature value is determined according to an experiment, an initial opening obtained by correcting the reference opening by the first correction coefficient is an optimal heating initial opening at the outdoor environment temperature value, based on this, a mapping relationship between each outdoor environment temperature value and the first correction coefficient is preset, and when the outdoor environment temperature value is obtained, the corresponding first correction coefficient is obtained according to the mapping relationship.
In order to quickly acquire a first correction coefficient and further correct the reference opening degree, the step of acquiring the first correction coefficient corresponding to the outdoor environment temperature value further includes:
acquiring a temperature value interval corresponding to the outdoor environment temperature value;
and determining the corresponding first correction coefficient according to the temperature value interval.
In this embodiment, according to the magnitude of a first correction coefficient corresponding to each outdoor environment temperature value and the magnitude of influence on correction of the reference opening degree, a plurality of temperature value intervals are divided, an optimal first correction coefficient is determined in each temperature value interval, a mapping relationship between each temperature value interval and the corresponding first correction coefficient is further established, and when an outdoor environment temperature value is obtained, the corresponding first correction coefficient is obtained based on the temperature value interval in which the outdoor environment temperature value falls.
Specifically, the relationship between the first correction coefficient and the temperature value interval follows the principle that when the outdoor environment temperature gradually decreases, the first correction coefficient gradually decreases, and the corresponding relationship between the common temperature value interval and the first correction coefficient is listed as follows:
| temperature value interval T | Preferred value of the first correction factor B |
| 10＞T4≥5 | Can be used forTake 1.3 |
| 5＞T4≥0 | Can be taken 1.2 |
| 0＞T4≥-5 | Can be taken 1.1 |
| -5＞T4≥-10 | Can be taken to be 1.0 |
| -10＞T4≥-17 | Can be taken to be 0.9 |
| -17＞T4 | Can be taken to be 0.8 |
The above table only lists the first correction coefficients corresponding to the temperature value intervals of the multi-split air conditioners, and the scope of the present invention is not limited to any suitable temperature value interval range. In addition, a plurality of first correction coefficients may be associated with each temperature value interval, and the present invention is not limited to the preferred values defined in the table.
Step S222, obtaining a second correction coefficient corresponding to the nominal capacity value.
Based on different nominal capacity values, the initial opening degree of the electronic expansion valve in the indoor unit is different according to the corresponding requirements, the initial opening degree requirements of the electronic expansion valve in the indoor unit are different according to the different capacity values, and therefore the correction coefficient comprises a second correction coefficient corresponding to the nominal capacity value.
In this embodiment, a second correction coefficient corresponding to each nominal capacity value is determined according to an experiment, an initial opening obtained by correcting the reference opening by the second correction coefficient is an optimal heating initial opening under the nominal capacity value, based on this, a mapping relationship between each nominal capacity value and the second correction coefficient is preset, and when the nominal capacity value is obtained, the corresponding second correction coefficient is obtained according to the mapping relationship.
In order to quickly obtain a second correction coefficient and further correct the reference opening degree, the step of obtaining the second correction coefficient corresponding to the nominal capacity value further includes:
acquiring a nominal capacity value interval corresponding to the nominal capacity value;
and determining the corresponding second correction coefficient according to the nominal capacity value interval.
In this embodiment, according to the magnitude of the second correction coefficient corresponding to each nominal capacity value and the magnitude of the influence on the correction of the reference opening degree, a plurality of nominal capacity value intervals are divided, an optimal second correction coefficient is determined in each nominal capacity value interval, a mapping relation between each nominal capacity value interval and each second correction coefficient is further established, and when the nominal capacity value of the indoor unit is obtained, the corresponding second correction coefficient is obtained based on the nominal capacity value interval in which the nominal capacity value falls.
Specifically, the relationship between the second correction coefficient and the range of the nominal ability value follows that the larger the nominal ability value is, the larger the corresponding second correction coefficient is, and the following lists the corresponding relationship between the common nominal ability value and the second correction coefficient:
| nominal capacity value interval of internal machine | Preferred value K of second correction factor |
| 2600W or less | 0.8 |
| 2600～3500W | 1.0 |
| 3500～5000W | 1.2 |
| Over 5000W | 2.0 |
In the invention, different nominal capacity ranges of the internal machine correspond to different correction coefficients K, but the protection range of the invention is not limited to any suitable nominal capacity range, a plurality of second correction coefficients corresponding to each nominal capacity value range can be provided, the table limits the preferred value corresponding to each nominal capacity value range, but not only limits the address, and the protection range of the invention comprises any specific value suitable for the second correction coefficient.
And step S230, determining the initial opening of the electronic expansion valve in the indoor unit to be opened according to the reference opening and the correction coefficient.
In this embodiment, 220 steps may be taken, after a correction coefficient is obtained, the reference opening is determined as an initial opening of an electronic expansion valve in the indoor unit to be opened after being corrected by the correction coefficient, specifically, a calculation formula of the initial opening is P0 ═ Pset × K × B, where P0 is the initial opening, B is a correction coefficient corresponding to the outdoor environment temperature value T, and K is a correction coefficient corresponding to the capacity nominal value P'.
In this embodiment, a correction coefficient of a reference opening degree is determined according to an outdoor environment temperature value and a nominal capacity value, and after the reference opening degree is corrected based on the correction coefficient, when an internal machine to be started is started, the internal machine to be started is controlled to be started to the corrected opening degree, so that the heating capacity of the internal machine to be started is optimized.
Referring to fig. 5, the present invention provides a third embodiment of a method for controlling a multi-split air conditioner, which is based on all the embodiments described above, and the method further includes:
step S40, when the indoor unit is opened, acquiring the preset opening of the electronic expansion valve in the unopened indoor unit;
and step S50, when the electronic expansion valve in the indoor unit to be opened is controlled to be opened to the initial opening, the electronic expansion valve in the indoor unit which is not opened is controlled to be adjusted to the preset opening.
In the multi-split air conditioner, one or more indoor units can be opened according to needs, when the indoor unit to be opened is adjusted, an electronic expansion valve in the unopened indoor unit is opened to a fixed opening degree to prevent the unopened indoor unit from being damaged, in the embodiment of the invention, when the opening operation of the indoor unit to be opened is performed, and the initial opening degree of the electronic expansion valve in the indoor unit to be opened is adjusted based on the outdoor environment temperature value and the nominal capacity value of the indoor unit to be opened, in order to ensure the refrigerant proportion balance of each indoor unit, the electronic expansion valve in the unopened indoor unit is correspondingly adjusted, wherein the preset opening degree is a smaller fixed opening degree preset in the air conditioning system of the embodiment, and when the initial opening degree of the electronic expansion valve in the indoor unit to be opened is adjusted, the electronic expansion valve in the unopened indoor unit is simultaneously adjusted to the smaller, so as to ensure the balance of the refrigerant proportion of each indoor unit.
It can be understood that after the electronic expansion valve in the indoor unit to be started is controlled to be opened to the initial opening degree and after a preset time interval, the air conditioning system adjusts the opening degree of the electronic expansion valve according to a preset optimization program to ensure that the system operates in an optimal heating mode.
In the embodiment, the relative balance of the refrigerant flow paths in the system is ensured by adjusting the unopened electronic expansion valve to the preset opening degree, so that the heating effect of the system is improved.
Referring to fig. 6, the present invention provides a fourth embodiment of a method for controlling a multi-split air conditioner, which is based on all the embodiments described above, and the method further includes:
step S60, when the indoor unit to be started is started, the operation mode of the indoor unit to be started is obtained;
and when the operation mode of the indoor unit to be started is a heating mode, executing the step of acquiring the outdoor environment temperature value and the nominal capacity value of the indoor unit.
The multi-split air conditioner runs in a heating mode, and based on unstable change of the heating mode, when the indoor unit to be started is started, the running mode of the indoor unit to be started is determined firstly, and the specific running mode can be determined according to a starting instruction and can also be determined according to the flow direction of a refrigerant.
And in the heating mode, executing the step of acquiring the outdoor environment temperature value and the nominal capacity value of the indoor unit to adjust the initial opening of an electronic expansion valve in the indoor unit to be started, so as to ensure that the air conditioning system can quickly achieve the optimal heating effect in the heating mode.
In order to achieve the above object, the present invention also provides a control device of a multi-split air conditioner, the control device including: the multi-split air conditioner control method comprises a memory, a processor and a multi-split air conditioner control program which is stored on the memory and can run on the processor, wherein the multi-split air conditioner control program realizes the multi-split air conditioner control method when being executed by the processor.
Preferably, the control device includes at least one of a multi-split air conditioner and a control terminal. That is, the control method of the multi-split air conditioner may be implemented in the multi-split air conditioner, or may be implemented on a control terminal, where the control terminal includes a mobile terminal, a remote controller, or an intelligent household appliance control center.
In addition, the present invention provides a computer readable storage medium having a multi-airconditioner control program stored thereon, which, when executed by a processor, implements the control method of the multi-airconditioner as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, and includes several instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A control method of a multi-split air conditioner is characterized in that the multi-split air conditioner comprises an outdoor unit and a plurality of indoor units connected with the outdoor unit, and the control method of the multi-split air conditioner comprises the following steps:
when an indoor unit is started, acquiring an outdoor environment temperature value, a nominal capacity value of the indoor unit to be started and a preset opening degree of an electronic expansion valve in the indoor unit which is not started, wherein the preset opening degree is a preset smaller fixed opening degree;
acquiring a reference opening degree of an electronic expansion valve in the indoor unit to be opened, and respectively determining a first correction coefficient and a second correction coefficient of the reference opening degree according to the outdoor environment temperature value and the nominal capacity value so as to determine an initial opening degree of the electronic expansion valve in the indoor unit to be opened based on the first correction coefficient, the second correction coefficient and the reference opening degree;
controlling the electronic expansion valve of the indoor unit to be started to be opened to the initial opening degree;
and controlling the electronic expansion valve in the unopened indoor unit to adjust to the preset opening.
2. The method of claim 1, wherein the step of determining a correction coefficient for a reference opening degree according to the outdoor ambient temperature and the nominal capacity value comprises:
acquiring a first correction coefficient corresponding to the outdoor environment temperature value;
and acquiring a second correction coefficient corresponding to the nominal capacity value.
3. The method as claimed in claim 2, wherein the step of obtaining the first correction factor corresponding to the outdoor ambient temperature value comprises:
acquiring a temperature value interval corresponding to the outdoor environment temperature value;
and determining the corresponding first correction coefficient according to the temperature value interval.
4. The method as claimed in claim 2, wherein the step of obtaining the second correction factor corresponding to the nominal capacity value comprises:
acquiring a nominal capacity value interval corresponding to the nominal capacity value;
and determining the corresponding second correction coefficient according to the nominal capacity value interval.
5. The method of claim 1, further comprising:
when an indoor unit to be started is started, acquiring the running mode of the indoor unit to be started;
and when the operation mode of the indoor unit to be started is a heating mode, executing the step of acquiring the outdoor environment temperature value and the nominal capacity value of the indoor unit.
6. A control apparatus of a multi-split air conditioner, comprising: memory and processor and a multi-airconditioner control program stored on the memory and executable on the processor, the multi-airconditioner control program implementing a control method of a multi-airconditioner according to any one of claims 1 to 5 when executed by the processor.
7. The control device of a multi-split air conditioner as claimed in claim 6, wherein the control device comprises at least one of a multi-split air conditioner and a control terminal.
8. A computer-readable storage medium, having a multi-airconditioner control program stored thereon, the multi-airconditioner control program, when being executed by a processor, implementing a control method of a multi-airconditioner according to any one of claims 1 to 5.
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| CN109945563B (en) * | 2019-03-22 | 2021-11-19 | 广东美的制冷设备有限公司 | Multi-split air conditioning system and method and device for initializing electronic expansion valve thereof |
| CN111520868A (en) * | 2020-05-25 | 2020-08-11 | 广东志高暖通设备股份有限公司 | Indoor unit refrigerant distribution control method of multi-split system |
| CN111520869B (en) * | 2020-05-25 | 2022-07-19 | 广东开利暖通空调股份有限公司 | Accurate refrigerant distribution control method for indoor unit of multi-split system |
| CN111595073A (en) * | 2020-07-01 | 2020-08-28 | 山东大学 | Control method and control system for initial opening of electronic expansion valve |
| CN114440503A (en) * | 2020-11-05 | 2022-05-06 | 广东美的制冷设备有限公司 | Method and device for controlling opening of electronic expansion valve, air conditioner and storage medium |
| CN114110999A (en) * | 2021-11-22 | 2022-03-01 | 珠海格力电器股份有限公司 | Method and device for controlling opening degree of internal machine of multi-connected unit, electronic equipment and storage medium |
| CN114608180B (en) * | 2022-03-15 | 2023-07-25 | 广东开利暖通空调股份有限公司 | Control method of electronic expansion valve of outdoor unit |
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