CN111578482B - Multi-split air conditioner and control method, device, equipment and storage medium thereof - Google Patents
Multi-split air conditioner and control method, device, equipment and storage medium thereof Download PDFInfo
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- CN111578482B CN111578482B CN202010468070.5A CN202010468070A CN111578482B CN 111578482 B CN111578482 B CN 111578482B CN 202010468070 A CN202010468070 A CN 202010468070A CN 111578482 B CN111578482 B CN 111578482B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- 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
- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
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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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Abstract
The invention discloses a multi-split air conditioner and a control method, a control device, control equipment and a storage medium thereof, wherein the method comprises the following steps: when the multi-split air conditioner runs in a heating mode, acquiring the number of indoor units with heating capacity requirements; detecting indoor units with heating capacity requirements, acquiring the evaporator temperature of each indoor unit with the heating capacity requirements, and controlling a compressor or an outdoor fan of the multi-split air conditioner according to the evaporator temperature; and when detecting that the number of the indoor units is one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature. Therefore, abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started to operate, especially when only a single indoor unit operates, is effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method and an apparatus for controlling an air conditioner, a computer readable storage medium, an apparatus for controlling an air conditioner, and an air conditioner.
Background
At present, a multi-split air conditioner is generally provided with an overvoltage protection function due to large configuration of the whole system, so that the compressor is controlled to stop under the condition that the exhaust pressure of the compressor is too large, and an air conditioner system is protected.
However, the related technical problem is that, during heating operation, when not all indoor units are in starting operation, especially when only a single indoor unit is in operation, the temperature and pressure of the multi-split air conditioner system are too high, which causes the compressor to trigger shutdown protection, and causes certain influence on the reliability and user experience of the multi-split air conditioner.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a method for controlling a multi-split air conditioner, which can effectively avoid the abnormal shutdown protection of the multi-split air conditioner when not all indoor units are powered on and operate, especially when only a single indoor unit is in operation, improve the reliability of the multi-split air conditioner, and improve the user experience.
A second object of the present invention is to provide a control apparatus for a multi-split air conditioner.
A third object of the invention is to propose a computer-readable storage medium.
A fourth object of the present invention is to provide a control apparatus of a multi-split air conditioner.
A fifth object of the present invention is to provide a multi-split air conditioner.
In order to achieve the above object, a method for controlling a multi-split air conditioner according to an embodiment of a first aspect of the present invention includes the following steps: when the multi-split air conditioner runs in a heating mode, acquiring the number of indoor units with heating capacity requirements; detecting the indoor units with the heating capacity requirements, acquiring the evaporator temperature of each indoor unit with the heating capacity requirements, and controlling the compressor or the outdoor fan of the multi-split air conditioner according to the evaporator temperature; and if the number of the indoor units is detected to be one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature.
According to the control method of the multi-split air conditioner provided by the embodiment of the invention, when the multi-split air conditioner operates in a heating mode, the number of indoor units with heating capacity requirements is acquired, the evaporator temperature of each indoor unit with heating capacity requirements is acquired after the indoor units with heating capacity requirements are detected, the compressor or the outdoor fan of the multi-split air conditioner is controlled according to the evaporator temperature, and the outdoor environment temperature is acquired after the number of the indoor units is detected, and the compressor is controlled according to the outdoor environment temperature. Therefore, abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started to operate, especially when only a single indoor unit operates, is effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
In addition, the control method of the multi-split air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, controlling a compressor of the multi-split air conditioner according to the evaporator temperature includes: calculating an average of the evaporator temperatures; and if the average value is detected to be larger than a first temperature threshold value and lasts for a first time threshold value, correcting the running frequency of the compressor according to the average value.
According to an embodiment of the present invention, said correcting the operating frequency of the compressor according to the average value includes: if the average value is detected to be larger than a first temperature set value, reducing the running frequency of the compressor; if the average value is detected to be less than or equal to the first temperature set value and greater than or equal to the second temperature set value, the running frequency of the compressor is kept; and if the average value is detected to be smaller than the second temperature set value, the running frequency of the compressor is increased.
According to an embodiment of the present invention, the controlling the compressor according to the outdoor ambient temperature includes: and if the outdoor environment temperature is detected to be greater than or equal to a second temperature threshold value, reducing the operation frequency of the multi-split air conditioner and reducing the operation time of the multi-split air conditioner.
According to an embodiment of the present invention, the controlling the compressor according to the outdoor ambient temperature further includes: and if the outdoor environment temperature is detected to be greater than or equal to the third temperature threshold, adjusting the operating frequency of the compressor so that the heating capacity demand is the current heating capacity demand multiplied by a first coefficient, wherein the third temperature threshold is greater than the second temperature threshold, and the first coefficient is less than 1 and is not 0.
According to an embodiment of the present invention, before controlling the outdoor fan according to the evaporator temperature, the method further includes: acquiring the outdoor environment temperature; and controlling the outdoor fan according to the evaporator temperature when the outdoor environment temperature is detected to be greater than or equal to a fourth temperature threshold value.
According to an embodiment of the present invention, the controlling the outdoor fan according to the evaporator temperature includes: calculating an average of the evaporator temperatures; determining the running wind gear of the outdoor fan according to the temperature interval of the average value; and controlling the outdoor fan to operate at the operating wind gear.
In order to achieve the above object, a control device for a multi-split air conditioner according to a second aspect of the present invention includes: the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the number of indoor units with heating capacity requirements when the multi-split air conditioner operates in a heating mode; the control module is used for acquiring the evaporator temperature of each indoor unit with the heating capacity requirement when detecting the indoor units with the heating capacity requirement, and controlling the compressor or the outdoor fan of the multi-split air conditioner according to the evaporator temperature; and when detecting that the number of the indoor units is one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature.
According to the control device of the multi-split air conditioner, provided by the embodiment of the invention, when the multi-split air conditioner operates in a heating mode, the number of indoor units with heating capacity requirements is acquired through the acquisition module, the evaporator temperature of each indoor unit with heating capacity requirements is acquired through the control module when the indoor units with heating capacity requirements are detected, the compressor or the outdoor fan of the multi-split air conditioner is controlled according to the evaporator temperature, and when the number of the indoor units is detected to be one, the outdoor environment temperature is acquired, and the compressor is controlled according to the outdoor environment temperature. Therefore, abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started to operate, especially when only a single indoor unit operates, is effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
To achieve the above object, a computer-readable storage medium according to a third aspect of the present invention is provided, having a computer program stored thereon, which, when being processed by a processor, executes the control method of the multi-split air conditioner as described above.
According to the computer-readable storage medium of the embodiment of the invention, by executing the computer program of the control method of the multi-split air conditioner, the abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started up and operated, especially when only a single indoor unit is operated, can be effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
In order to achieve the above object, a control device of a multi-split air conditioner according to a fourth aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the control device implements the method for controlling the multi-split air conditioner as described above.
According to the control equipment of the multi-split air conditioner, the processor executes the program of the control method of the multi-split air conditioner, so that the multi-split air conditioner can be effectively prevented from being started to operate in less than all indoor units, especially abnormal shutdown protection when only a single indoor unit operates is avoided, the reliability of the multi-split air conditioner is improved, and the use experience of a user is improved.
In order to achieve the above object, a multi-split air conditioner according to a fifth embodiment of the present invention includes the control device of the multi-split air conditioner as described above or the control apparatus of the multi-split air conditioner as described above.
According to the multi-split air conditioner provided by the embodiment of the invention, the control device of the multi-split air conditioner or the control equipment of the multi-split air conditioner is adopted, so that the multi-split air conditioner can be effectively prevented from being started to operate in less than all indoor units, especially abnormal shutdown protection when only a single indoor unit operates is avoided, the reliability of the multi-split air conditioner is improved, and the use experience of a user is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating a method of controlling a multi-split air conditioner according to an embodiment of the present invention;
fig. 9 is a block diagram illustrating a control apparatus of a multi-split air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A multi-split air conditioner, a control method, an apparatus, a device, and a storage medium thereof according to embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for controlling a multi-split air conditioner according to an embodiment of the present invention.
As shown in fig. 1, a method for controlling a multi-split air conditioner, the method comprising:
s101, when the multi-split air conditioner operates in a heating mode, the number of indoor units with heating capacity requirements is obtained.
It should be understood that the indoor unit having a heating capacity requirement may include an indoor unit that is not in a standby state, or an indoor unit that is not in a cooling mode of operation, or an indoor unit that is in a heating mode of operation and has a heating temperature that does not reach a set temperature.
And S102, detecting the indoor units with the heating capacity requirements, acquiring the evaporator temperature of each indoor unit with the heating capacity requirements, and controlling the compressor or the outdoor fan of the multi-split air conditioner according to the evaporator temperature.
That is, when detecting that there is an indoor unit requiring heating capacity, the evaporator temperature of each indoor unit requiring heating capacity may be obtained, and the compressor or the outdoor fan of the multi-split air conditioner may be controlled according to the evaporator temperature.
Alternatively, the evaporator temperature T1, T2, … …, Tn of each indoor unit where the heating capacity demand exists can be obtained by providing a temperature sensor at each indoor unit evaporator.
S103, detecting that the number of the indoor units is one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature.
That is, when the number of the indoor units is detected as one, the outdoor ambient temperature Tsy is obtained, and the compressor is controlled according to the outdoor ambient temperature Tsy.
Alternatively, the outdoor ambient temperature Tsy may be obtained by providing a temperature sensor on the outdoor unit of the multi-split air conditioner.
Specifically, the control method of the multi-split air conditioner in the embodiment of the invention can effectively avoid abnormal shutdown protection of the indoor units and improve the reliability of the multi-split air conditioner for different numbers of indoor units with heating capacity requirements under the condition that not all indoor units of the multi-split air conditioner are started to operate.
A method for controlling a multi-split air conditioner according to an embodiment of the present invention will be described with reference to fig. 2 to 7.
Further, as shown in fig. 2, the controlling of the compressor of the multi-split air conditioner according to the evaporator temperature includes:
s201, calculating the average value of the evaporator temperature.
It is understood that an average value of the evaporator temperatures may be calculated according to the obtained evaporator temperatures of each indoor unit having a heating capacity demand, where the average value of the evaporator temperatures is the sum of the evaporator temperatures of each indoor unit having a heating capacity demand/the number of indoor units having a heating capacity demand, for example, the number of indoor units having a heating capacity demand is n, and the evaporator temperatures corresponding to each indoor unit having a heating capacity demand are T1, T2, … …, Tn, respectively, and the average value Ta of the evaporator temperatures is T1+ T2+ … … + Tn/n, where the number n of detected indoor units is at least two and is not the total number of indoor units in the multi-split air conditioner.
S202, when the average value is detected to be larger than the first temperature threshold value and the first time threshold value is continued, the running frequency of the compressor is corrected according to the average value.
It can be understood that, when it is detected that the average value Ta is greater than the first temperature threshold Ty1 and continues for the first time threshold t1, it may be considered that the multi-split air conditioner satisfies the compressor frequency correction condition, and at this time, the operating frequency of the compressor may be corrected according to the average value, and the compressor pressure may be adjusted, thereby improving the operating efficiency of the multi-split air conditioner and the reliability of the multi-split air conditioner.
It should be noted that the first temperature threshold Ty1 and the first time threshold t1 may be set according to the operation parameters of the multi-split air conditioner.
Specifically, as shown in fig. 3, the operation frequency of the compressor is corrected according to the average value, including:
and S301, if the average value is detected to be larger than the first temperature set value, reducing the running frequency of the compressor.
That is, when it is detected that the average value Ta is greater than the first temperature set value Ts1, it may be considered that the temperature and pressure of the compressor platform are too high, and the shutdown protection of the indoor unit is easily triggered.
It should be noted that the first temperature set point Ts1 can be set according to the operation parameters of the compressor, wherein in the embodiment of the present invention, the first temperature set point can be preferably 40 ℃.
S302, if the average value is detected to be less than or equal to the first temperature set value and greater than or equal to the second temperature set value, the running frequency of the compressor is maintained.
That is, when it is detected that the average value Ta is less than or equal to the first temperature set value Ts1 and greater than or equal to the second temperature set value Ts2, the indoor unit may be considered to meet the heating capacity requirement and the compressor platform operates stably, and at this time, the operating frequency of the compressor may be maintained, thereby ensuring stable operation of the multi-split air conditioner.
It should be noted that the second temperature set point Ts2 can be set according to the operation parameters of the compressor, wherein in the embodiment of the present invention, the second temperature set point can be preferably 47 ℃.
And S303, if the average value is detected to be smaller than the second temperature set value, the running frequency of the compressor is increased.
That is, when it is detected that the average value Ta is less than the second temperature set value Ts2, it may be considered that the temperature and pressure of the compressor platform are low, and the heating capacity of the multi-split air conditioner needs to be further improved.
Further, as shown in fig. 4, the controlling of the compressor according to the outdoor ambient temperature includes:
and S1031, if the outdoor environment temperature is detected to be greater than or equal to the second temperature threshold, reducing the operation frequency of the multi-split air conditioner and reducing the operation time of the multi-split air conditioner.
It can be understood that when the number of the indoor units is one, and the outdoor environment temperature Tsy is detected to be greater than or equal to the second temperature threshold Ty2, it can be considered that the current outdoor environment is favorable for the multi-split air conditioner to heat, and at this time, the operation frequency and the operation time of the multi-split air conditioner can be set independently, for example, the operation frequency of the multi-split air conditioner is reduced, and the operation time of the multi-split air conditioner is reduced, so that the temperature and the pressure of the compressor are reduced, and the reliability of the multi-split air conditioner is improved while the indoor units meet the requirement of the heating capacity.
It should be noted that the second temperature threshold Ty2 may be set according to an operation parameter of the multi-split air conditioner.
Further, as shown in fig. 5, the method for controlling the compressor according to the outdoor environment temperature further includes:
and S1032, detecting that the outdoor environment temperature is greater than or equal to a third temperature threshold, adjusting the operating frequency of the compressor to enable the heating capacity requirement to be the current heating capacity requirement multiplied by a first coefficient, wherein the third temperature threshold is greater than the second temperature threshold, and the first coefficient is less than 1 and is not 0.
It is understood that when the number of the indoor units is one, and the outdoor environment temperature Tsy is detected to be greater than or equal to the third temperature threshold Ty3, it is considered that the current outdoor environment is favorable for the multi-split air conditioner to perform heating, and at this time, the heating capacity requirement of the compressor may be appropriately reduced, for example, the operation frequency of the compressor is adjusted, so that the heating capacity requirement is the current heating capacity requirement multiplied by a first coefficient a, wherein the third temperature threshold Ty3 is greater than the second temperature threshold Ty2, and the first coefficient a is less than 1 and is not 0.
It should be noted that the third temperature threshold Ty3 may be set according to an operation parameter of the multi-split air conditioner.
Further, as shown in fig. 6, before controlling the outdoor fan according to the evaporator temperature, the method further includes:
s401, acquiring the outdoor environment temperature.
Alternatively, the outdoor ambient temperature may be acquired by providing a temperature sensor on the outdoor unit of the multi-split air conditioner before the outdoor fan is controlled according to the evaporator temperature.
S402, detecting that the outdoor environment temperature is larger than or equal to a fourth temperature threshold value, and controlling the outdoor fan according to the evaporator temperature.
That is, when it is detected that the outdoor ambient temperature Tsy is greater than or equal to the fourth temperature threshold Ty4, it may be determined that the multi-split air conditioner satisfies the outdoor fan wind speed correction condition, and at this time, the outdoor fan may be controlled according to the evaporator temperature Tn to adjust the outdoor heat exchange capacity of the multi-split air conditioner, thereby improving the operation efficiency of the multi-split air conditioner and improving the reliability of the multi-split air conditioner.
It should be noted that the fourth temperature threshold Ty4 may be set according to an operation parameter of the multi-split air conditioner.
Further, as shown in fig. 7, the controlling of the outdoor fan according to the evaporator temperature includes:
s501, calculating the average value of the evaporator temperature.
It should be noted that the method for calculating the average value Ta of the evaporator temperature in the embodiment of the present invention is the same as the method for calculating the average value Ta of the evaporator temperature in the foregoing embodiment of the present invention, and details are not repeated here.
And S502, determining the running wind gear of the outdoor fan according to the temperature interval of the average value.
That is, after the average value Ta of the evaporator temperature is calculated, the operating wind level of the outdoor fan may be determined according to the temperature interval in which the average value Ta of the evaporator temperature is calculated, for example, assuming that the temperature intervals are Tq (1) -Tq (2), Tq (2) -Tq (3), … …, Tq (n-1) -Tq (n), and each temperature interval corresponds to an operating wind level D1, D2, … …, and Dn, at this time, if Tq (1) ≦ Ta ≦ Tq (2), the operating wind level of the outdoor fan is determined to be D1, if Tq (2) ≦ Ta ≦ Tq (3), the operating wind level of the outdoor fan is determined to be D2, if Tq (n-1) ≦ Ta ≦ Tq (n), the operating wind level of the outdoor fan is determined to be Dn, and so forth.
And S503, controlling the outdoor fan to operate in a wind gear.
It can be understood that the operation wind level of the outdoor fan is determined according to the temperature interval of the average value Ta, and the outdoor fan is controlled to operate in the operation wind level, so that the wind speed correction of the outdoor fan is realized, and the reliability of the multi-split air conditioner is improved.
Specifically, as shown in fig. 8, when the multi-split air conditioner is in the heating operation mode according to an embodiment of the present invention, step S1 is performed.
S1, determining a first temperature threshold, a second temperature threshold, a third temperature threshold, a fourth temperature threshold, a first time threshold and a first coefficient, and executing the steps S2-S5 at the same time.
It should be noted that different first temperature threshold, second temperature threshold, third temperature threshold, fourth temperature threshold, first time threshold and first coefficient may be determined according to different multi-split air conditioner units.
S2, outdoor ambient temperature is acquired, and step S6 is performed.
S3, detecting the indoor units with heating capacity requirement, obtaining the evaporator temperature of each indoor unit with heating capacity requirement, calculating the average value of the evaporator temperatures, and executing steps S7-S9.
And S4, if the number of the indoor units with the heating capacity requirement is detected to be one, and the outdoor environment temperature is detected to be greater than or equal to the second temperature threshold, reducing the operation frequency of the multi-split air conditioner and reducing the operation time of the multi-split air conditioner.
And S5, detecting that the number of the indoor units with the heating capacity requirement is one, and detecting that the outdoor environment temperature is greater than or equal to a third temperature threshold value, adjusting the operating frequency of the compressor to enable the heating capacity requirement to be the current heating capacity requirement multiplied by a first coefficient.
S6, judging whether the outdoor environment temperature is larger than or equal to the fourth temperature threshold, if yes, executing step S10, and if no, executing step S13.
And S7, detecting that the average value is greater than the first temperature set point, decreasing the operating frequency of the compressor.
And S8, if the average value is detected to be less than or equal to the first temperature set value and greater than or equal to the second temperature set value, the running frequency of the compressor is maintained.
And S9, if the average value is detected to be less than the second temperature set value, the running frequency of the compressor is increased.
S10, calculating an average of the evaporator temperatures.
And S11, determining the running wind level of the outdoor fan according to the temperature interval of the average value.
And S12, controlling the outdoor fan to operate in a wind gear.
And S13, keeping the multi-split air conditioner running normally.
Optionally, in an embodiment of the present invention, not shown, the pressure of the compressor platform may be adjusted by controlling the opening of the electronic expansion valve of the indoor unit, so as to improve the reliability of the multi-split air conditioner.
In summary, according to the control method of the multi-split air conditioner provided by the embodiment of the present invention, when the multi-split air conditioner operates in the heating mode, the number of the indoor units having the heating capacity requirement is obtained, after the indoor units having the heating capacity requirement are detected, the evaporator temperature of each indoor unit having the heating capacity requirement is obtained, the compressor or the outdoor fan of the multi-split air conditioner is controlled according to the evaporator temperature, and after the number of the indoor units is detected to be one, the outdoor environment temperature is obtained, and the compressor is controlled according to the outdoor environment temperature. Therefore, abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started to operate, especially when only a single indoor unit operates, is effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
Fig. 9 is a block diagram illustrating a control apparatus of a multi-split air conditioner according to an embodiment of the present invention.
As shown in fig. 9, the control device 100 of the multi-split air conditioner includes: an acquisition module 10 and a control module 20.
The acquiring module 10 is used for acquiring the number of indoor units with heating capacity requirements when the multi-split air conditioner operates in a heating mode; the control module 20 is configured to, when detecting that there is an indoor unit requiring heating capacity, obtain an evaporator temperature of each indoor unit requiring heating capacity, and control a compressor or an outdoor fan of the multi-split air conditioner according to the evaporator temperature; and if the number of the indoor units is detected to be one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature.
It should be noted that the specific implementation of the control device of the multi-split air conditioner in the embodiment of the present invention corresponds to the specific implementation of the control method of the multi-split air conditioner in the embodiment of the present invention, and details are not described herein again.
In summary, according to the control device of the multi-split air conditioner provided in the embodiment of the present invention, when the multi-split air conditioner operates in the heating mode, the number of the indoor units having a heating capacity requirement is obtained through the obtaining module, and when the control module detects that the indoor units having the heating capacity requirement exist, the evaporator temperature of each indoor unit having the heating capacity requirement is obtained, and the compressor or the outdoor fan of the multi-split air conditioner is controlled according to the evaporator temperature, and when the number of the indoor units is detected to be one, the outdoor environment temperature is obtained, and the compressor is controlled according to the outdoor environment temperature. Therefore, abnormal shutdown protection of the multi-split air conditioner when not all indoor units are started to operate, especially when only a single indoor unit operates, is effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of users is improved.
In order to implement the above embodiments, the present invention also provides a control apparatus of a multi-split air conditioner, including: the control method of the multi-split air conditioner in the embodiment is used for executing the control method of the multi-split air conditioner when the program is executed by the processor, so that the abnormal shutdown protection of the multi-split air conditioner when not all indoor units are powered on and operated, particularly when only a single indoor unit is operated, can be effectively avoided, the reliability of the multi-split air conditioner is improved, and the use experience of a user is improved.
In order to implement the foregoing embodiment, the present invention further provides a computer-readable storage medium, where instructions in the storage medium are executed by a processor, so as to implement the control method of the multi-split air conditioner in the foregoing embodiment, which can effectively avoid the startup operation of the multi-split air conditioner in less than all indoor units, especially the abnormal shutdown protection when only a single indoor unit operates, improve the reliability of the multi-split air conditioner, and improve the user experience.
In order to implement the above embodiments, the present invention further provides a multi-split air conditioner, including the control device of the multi-split air conditioner in the above embodiments, or the control device of the multi-split air conditioner in the above embodiments, and by using the control device of the multi-split air conditioner in the above embodiments, or the control device of the multi-split air conditioner in the above embodiments, it is possible to effectively prevent the multi-split air conditioner from being operated in a non-all indoor units, and in particular, to prevent an abnormal shutdown when only a single indoor unit is operated, thereby improving reliability of the multi-split air conditioner, and improving user experience.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A control method of a multi-split air conditioner is characterized by comprising the following steps:
when the multi-split air conditioner runs in a heating mode, acquiring the number of indoor units with heating capacity requirements;
detecting the indoor units with the heating capacity requirements, acquiring the evaporator temperature of each indoor unit with the heating capacity requirements, and controlling the compressor or the outdoor fan of the multi-split air conditioner according to the evaporator temperature;
when the number of the indoor units is detected to be one, the outdoor environment temperature is obtained, and the compressor is controlled according to the outdoor environment temperature;
the controlling the compressor according to the outdoor environment temperature includes:
when the outdoor environment temperature is detected to be greater than or equal to a second temperature threshold value, reducing the operation frequency of the multi-split air conditioner and reducing the operation time of the multi-split air conditioner;
the controlling the compressor according to the outdoor environment temperature further comprises:
detecting that the outdoor environment temperature is greater than or equal to a third temperature threshold, adjusting the operating frequency of the compressor so that the heating capacity demand is the current heating capacity demand multiplied by a first coefficient, wherein the third temperature threshold is greater than the second temperature threshold, and the first coefficient is less than 1 and is not 0;
before controlling the outdoor fan according to the evaporator temperature, the method further includes:
acquiring the outdoor environment temperature;
and controlling the outdoor fan according to the evaporator temperature when the outdoor environment temperature is detected to be greater than or equal to a fourth temperature threshold value.
2. The method as set forth in claim 1, wherein controlling compressors of the multi-split air conditioner according to the evaporator temperature comprises:
calculating an average of the evaporator temperatures;
and if the average value is detected to be larger than a first temperature threshold value and lasts for a first time threshold value, correcting the running frequency of the compressor according to the average value.
3. The method of claim 2, wherein said modifying the operating frequency of the compressor based on the average value comprises:
if the average value is detected to be larger than a first temperature set value, reducing the running frequency of the compressor;
if the average value is detected to be less than or equal to the first temperature set value and greater than or equal to the second temperature set value, the running frequency of the compressor is kept;
and if the average value is detected to be smaller than the second temperature set value, the running frequency of the compressor is increased.
4. The method of claim 1, wherein said controlling said outdoor fan based on said evaporator temperature comprises:
calculating an average of the evaporator temperatures;
determining the running wind gear of the outdoor fan according to the temperature interval of the average value;
and controlling the outdoor fan to operate at the operating wind gear.
5. A control apparatus of a multi-split air conditioner, the apparatus comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the number of indoor units with heating capacity requirements when the multi-split air conditioner operates in a heating mode;
the control module is used for acquiring the evaporator temperature of each indoor unit with the heating capacity requirement when detecting the indoor units with the heating capacity requirement, and controlling the compressor or the outdoor fan of the multi-split air conditioner according to the evaporator temperature; when the number of the indoor units is detected to be one, acquiring the outdoor environment temperature, and controlling the compressor according to the outdoor environment temperature;
the control module is further used for reducing the operation frequency of the multi-split air conditioner and reducing the operation time of the multi-split air conditioner when detecting that the outdoor environment temperature is greater than or equal to a second temperature threshold value;
the control module is further configured to adjust an operating frequency of the compressor to make the heating capacity demand equal to a current heating capacity demand multiplied by a first coefficient when detecting that the outdoor ambient temperature is greater than or equal to a third temperature threshold, where the third temperature threshold is greater than the second temperature threshold, and the first coefficient is less than 1 and is not 0;
the control module is also used for acquiring the outdoor environment temperature before controlling the outdoor fan according to the evaporator temperature; and controlling the outdoor fan according to the evaporator temperature when the outdoor environment temperature is detected to be greater than or equal to a fourth temperature threshold value.
6. A computer-readable storage medium, having stored thereon a computer program which, when processed by a processor, performs a control method of a multi-split air conditioner as set forth in any one of claims 1 to 4.
7. A control apparatus of a multi-split air conditioner, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements the control method of the multi-split air conditioner as set forth in any one of claims 1 to 4.
8. A multi-split air conditioner comprising the control device of the multi-split air conditioner as set forth in claim 5 or the control apparatus of the multi-split air conditioner as set forth in claim 7.
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| CN114353276B (en) * | 2020-10-13 | 2023-03-28 | 美的集团武汉制冷设备有限公司 | Multi-split air conditioner, control method thereof and computer storage medium |
| CN112460777B (en) * | 2020-11-30 | 2022-08-19 | 佛山市顺德区美的电子科技有限公司 | Multi-split air conditioner, control method and device thereof and storage medium |
| CN112728712B (en) * | 2021-01-21 | 2022-05-06 | 广东美的暖通设备有限公司 | Multi-split air conditioner running capacity detection method, multi-split air conditioner, storage medium and device |
| CN112944453B (en) * | 2021-02-26 | 2023-03-31 | 青岛海尔空调电子有限公司 | Control method of three-pipe multi-split air conditioning unit |
| CN113531857B (en) * | 2021-07-20 | 2022-09-20 | 广东美的制冷设备有限公司 | Control method of multi-split air conditioner, multi-split air conditioner and storage medium |
| CN114216221B (en) * | 2021-12-20 | 2023-06-02 | 宁波奥克斯电气股份有限公司 | Detection method and device for multi-split air conditioner, multi-split air conditioner and storage medium |
| CN115682395B (en) * | 2022-11-04 | 2024-06-11 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner evaporation temperature control method and device and multi-split air conditioner |
| CN115751590B (en) * | 2022-11-10 | 2024-06-11 | 宁波奥克斯电气股份有限公司 | Compressor discharge pressure control method and device, air conditioner and storage medium |
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