CN115183426B - Control method of multi-split air conditioner, multi-split air conditioner and storage medium - Google Patents

Control method of multi-split air conditioner, multi-split air conditioner and storage medium Download PDF

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Publication number
CN115183426B
CN115183426B CN202210898823.5A CN202210898823A CN115183426B CN 115183426 B CN115183426 B CN 115183426B CN 202210898823 A CN202210898823 A CN 202210898823A CN 115183426 B CN115183426 B CN 115183426B
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Prior art keywords
indoor unit
air conditioner
split air
indoor
controlling
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CN115183426A (en
Inventor
陶骙
黎顺全
李耀东
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202210898823.5A priority Critical patent/CN115183426B/en
Publication of CN115183426A publication Critical patent/CN115183426A/en
Priority to PCT/CN2023/091336 priority patent/WO2024021721A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method of a multi-split air conditioner, the multi-split air conditioner and a storage medium. The multi-split air conditioner comprises at least two indoor units, and the method comprises the following steps: acquiring an operation mode of each indoor unit of the at least two indoor units; when a first mode exists in at least two operation modes, controlling a throttling device of a first indoor unit to be alternately closed and opened, wherein the first indoor unit is the indoor unit for operating the first mode; the wind outlet speed corresponding to the first mode is smaller than or equal to a preset wind speed. The invention aims to improve the degree of compromise between the requirements of the multi-split air conditioner on no-wind sense and other environment regulation, and improve the comfort of users in different spaces with the multi-split air conditioner.

Description

Control method of multi-split air conditioner, multi-split air conditioner and storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method of a multi-split air conditioner, the multi-split air conditioner and a storage medium.
Background
The multi-split air conditioner is generally connected with a plurality of indoor units through an external unit, the indoor units are respectively arranged in different indoor spaces, and the external unit provides energy required for adjusting indoor environments for the indoor units. Wherein, each indoor unit can be adjusted and controlled independently according to the user requirement in the space where the indoor unit is arranged, which can lead to different indoor opportunities to simultaneously have different operation modes.
The operation requirement of the indoor unit running in the windless mode is different from the operation requirement of the indoor unit running in other temperature and humidity regulation modes (such as a conventional cooling mode or a conventional heating mode), the outdoor unit is generally controlled according to the priority of the operation modes of different indoor units at present, the regulation of the output capacity of the outdoor unit affects all the indoor units at the same time, and the problem that the energy obtained by the indoor unit with the windless requirement is excessively large to cause condensation or uncomfortable for a user or the energy obtained by the indoor unit with other temperature and humidity regulation requirement is insufficient to cause poor environmental regulation effect is easily caused. Therefore, the multi-split air conditioner has the problem that the requirements of no wind sense and other environment adjustment cannot be met, and the comfort of users in different spaces cannot be met at the same time.
Disclosure of Invention
The invention mainly aims to provide a control method of a multi-split air conditioner, the multi-split air conditioner and a storage medium, and aims to improve the degree of consideration of the requirements of the multi-split air conditioner on no-wind feeling and other environment adjustment and improve the comfort of users in different spaces with the multi-split air conditioner.
In order to achieve the above object, the present invention provides a control method of a multi-split air conditioner, the multi-split air conditioner includes at least two indoor units, the control method of the multi-split air conditioner includes the following steps:
acquiring an operation mode of each indoor unit of the at least two indoor units;
when a first mode exists in at least two operation modes, controlling a throttling device of a first indoor unit to be alternately closed and opened, wherein the first indoor unit is the indoor unit for operating the first mode;
the wind outlet speed corresponding to the first mode is smaller than or equal to a preset wind speed.
Optionally, defining the second indoor unit as the indoor unit running in the second mode, where the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and the step of controlling the throttling device of the first indoor unit to be alternatively turned off and on includes:
acquiring a first energy requirement value of the first indoor unit and a second energy requirement value of the second indoor unit;
determining a target opening duration and/or a target closing duration according to the first energy requirement value and the second energy requirement value;
and controlling the throttling device to be alternately closed and opened according to the target opening duration and/or the target closing duration.
Optionally, the step of determining the target opening duration and/or the target closing duration according to the first energy requirement value and the second energy requirement value includes:
determining a ratio of the first energy requirement value to the second energy requirement value;
determining the target opening duration and/or the target closing duration according to the ratio;
the target closing time length is in negative correlation with the ratio, and the target opening time length is in positive correlation with the ratio.
Optionally, the step of controlling the throttling device of the first indoor unit to be alternately closed and opened includes:
and controlling the throttling device to be closed and opened at the minimum opening degree alternately.
Optionally, defining the second indoor unit as the indoor unit running in the second mode, where the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and the step of controlling the throttling device of the first indoor unit to be alternatively turned off and on includes:
acquiring a first environment temperature of the first indoor unit acting space and a second environment temperature of the second indoor unit acting space;
determining a first temperature difference value between the first ambient temperature and a first set temperature of the first indoor unit, and determining a second temperature difference value between the second ambient temperature and a second set temperature of the second indoor unit;
determining a target opening according to the first temperature difference value and the second temperature difference value;
and controlling the throttling device of the first indoor unit to be alternately closed and opened at the target opening.
Optionally, defining the indoor unit operating in the second mode as a second indoor unit, where an air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after the step of obtaining the operation mode of each indoor unit in the at least two indoor units, the method further includes:
when a first mode exists in at least two operation modes, and when the operation of the first indoor unit reaches a first preset condition, executing the step of controlling the throttling device of the first indoor unit to be alternately closed and opened; wherein the first preset condition includes at least one of the following conditions:
the indoor units which are needed in the at least two indoor units comprise the first indoor unit and the second indoor unit;
the opening of the throttling device reaches the minimum opening; the method comprises the steps of,
at least one of a first condition and a second condition, wherein the first condition comprises that the current superheat degree of the first indoor unit is smaller than a target superheat degree, the second condition comprises that a first target temperature difference of an acting space of the second indoor unit is larger than or equal to a first preset temperature and/or a cooling speed is smaller than or equal to a preset speed, and the first target temperature difference comprises a temperature difference value of the current indoor environment temperature and a corresponding second set temperature.
Optionally, defining the indoor unit operating in the second mode as a second indoor unit, where an air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after the step of controlling the throttling device in the target indoor unit to be alternately turned off and on, the method further includes:
when the operation of the multi-split air conditioner reaches a second preset condition, controlling the throttling device to stop alternately closing and opening; wherein the second preset condition includes at least one of the following conditions:
the indoor unit which is provided with energy in the at least two indoor units is one of the first indoor unit and the second indoor unit;
the continuous operation time length of the throttle device which is alternately opened and closed is greater than or equal to a first preset time length;
the second target temperature difference of the acting space of the second indoor unit is smaller than a second preset temperature and lasts for a second preset duration, and the second target temperature difference comprises a temperature difference value between the current indoor environment temperature and a corresponding second preset temperature.
Optionally, defining the indoor unit operating in the second mode as a second indoor unit, where an air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after the step of obtaining the operation mode of each indoor unit in the at least two indoor units, the method further includes:
when a first mode exists in at least two operation modes, and when the operation of the first indoor unit reaches a second condition, executing the step of controlling the throttling device in the first indoor unit to be alternately closed and opened, and controlling the multi-split air conditioner to increase the operation frequency of a compressor;
the second condition includes that a first target temperature difference of the acting space of the second indoor unit is greater than or equal to a first preset temperature and/or a cooling speed is less than or equal to a preset speed, and the first target temperature difference includes a temperature difference value between a current indoor environment temperature and a corresponding second set temperature.
Optionally, the step of controlling the multi-split air conditioner to increase the operating frequency of the compressor includes:
and controlling the second indoor unit to increase the energy demand coefficient so that the outdoor unit of the multi-split air conditioner increases the operating frequency of the compressor according to the energy demand coefficient.
In addition, in order to realize the above-mentioned purpose, this application still provides a multi-split air conditioner, multi-split air conditioner includes:
at least two indoor units;
and a control device, wherein the at least two indoor units are connected with the control device, and the control device comprises: the control method for the multi-split air conditioner comprises the steps of a memory, a processor and a control program of the multi-split air conditioner, wherein the control program is stored in the memory and can run on the processor, and the control method for the multi-split air conditioner is realized when the control program of the multi-split air conditioner is executed by the processor.
In addition, in order to achieve the above objective, the present application further provides a storage medium, where a control program of the multi-split air conditioner is stored, and when the control program of the multi-split air conditioner is executed by a processor, the steps of the control method of the multi-split air conditioner described in any one of the above are implemented.
According to the control method of the multi-split air conditioner, based on the multi-split air conditioner comprising at least two indoor units, when a first indoor unit running in a first mode exists in the at least two indoor units, the throttling device of the first indoor unit is controlled to be alternately closed and opened, the first mode is operated to indicate whether the first indoor unit has a wind sensation requirement or not, the quantity of refrigerants flowing into other indoor units except the first indoor unit in the closing process of the throttling device is increased, the indoor units with other environment adjustment requirements are guaranteed to have enough energy for environment adjustment, the intermittent opening of the throttling device can ensure that the flowing-in refrigerants in the first indoor unit cannot be too much, the indoor space wind sensation requirement of the first indoor unit is guaranteed to be met, meanwhile, the heat exchanging quantity is not too much so as to meet the comfort requirement of users, and based on the method, the balance of requirements between the indoor unit with the wind sensation requirement and the indoor unit with other environment adjustment requirements can be achieved, so that the multi-split air conditioner has the wind sensation requirement and the degree of other environment adjustment requirements, and the user comfort in different spaces with the multi-split air conditioner effect is improved.
Drawings
FIG. 1 is a schematic diagram of a system architecture of an embodiment of a multi-split air conditioner according to the present invention;
FIG. 2 is a schematic diagram of a hardware structure involved in the operation of an embodiment of the multi-split air conditioner of the present invention;
FIG. 3 is a flow chart illustrating an embodiment of a control method of a multi-split air conditioner according to the present invention;
fig. 4 is a flowchart illustrating a control method of a multi-split air conditioner according to another embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the invention provides a multi-split air conditioner.
In this embodiment, referring to fig. 1, the multi-split air conditioner includes a control device 1, an outdoor unit 2, and at least two indoor units 3 connected to the outdoor unit 2. The control device 1 may include a first controller disposed in the outdoor unit 2 and a second controller disposed in the indoor unit 3. The first controller is used for controlling the operation of the outdoor unit 2, and the second controller is used for controlling the operation of the indoor unit 3. The outdoor unit 2 and at least two indoor units 3 are connected to the control device 1. Different indoor units 3 are distributed in different indoor spaces.
In this embodiment, the heat exchange states of the indoor units 3 turned on in at least two indoor units 3 are the same, and may be both a condensation state or an evaporation state. In other embodiments, the heat exchange states of the indoor units 3 turned on in at least two indoor units 3 may be different, and a part of the indoor units 3 turned on may be operated for heating and another part of the indoor units 3 turned on may be operated for cooling.
Each indoor unit 3 comprises an indoor heat exchanger and a throttling device connected in series with the indoor heat exchanger. The throttle device is connected with the control device 1, and the control device 1 can control the opening, closing or opening adjustment of the throttle device.
A temperature sensor 4 may be disposed in the indoor space where each indoor unit 3 is located (for example, a return air inlet of the indoor unit 3) for detecting an ambient temperature of the indoor space where the indoor unit 3 is located. The temperature sensor 4 is connected to the control device 1.
In an embodiment of the present invention, referring to fig. 2, a control device 1 of a multi-split air conditioner includes: a processor 1001 (e.g., CPU), a memory 1002, a timer 1003, and the like. The components in the control device 1 are connected by a communication bus. The memory 1002 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 may alternatively be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the device structure shown in fig. 2 is not limiting of the device and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 2, a control program of the multi-split air conditioner may be included in a memory 1002 as one storage medium. In the apparatus shown in fig. 2, the processor 1001 may be configured to call a control program of the multi-split air conditioner stored in the memory 1002, and perform related step operations of a control method of the multi-split air conditioner in the following embodiments.
The embodiment of the invention also provides a control method of the multi-split air conditioner, which is applied to the multi-split air conditioner.
Referring to fig. 3, an embodiment of a control method of the multi-split air conditioner is provided. In this embodiment, the control method of the multi-split air conditioner includes:
step S10, obtaining an operation mode of each indoor unit in the at least two indoor units;
the operation mode of the indoor unit may include one of a first mode and a second mode. The first mode may include a low wind speed mode in which an air outlet wind speed of the indoor unit is less than or equal to a preset wind speed, such as a no wind sense mode, a weak wind sense mode, or a soft wind sense mode. The second mode may include a high wind speed mode in which the wind speed of the indoor unit is allowed to be greater than a preset wind speed, such as a heating mode, a cooling mode, or a dehumidifying mode.
Step S20, when a first mode exists in at least two operation modes, controlling a throttling device of a first indoor unit to be alternately closed and opened, wherein the first indoor unit is the indoor unit operating in the first mode; the wind outlet speed corresponding to the first mode is smaller than or equal to a preset wind speed.
The closing time and the opening time in the process of alternately closing and opening the throttling device can be preset fixed parameters, and can also be parameters determined according to the actual running state of the multi-split air conditioner.
The opening degree of the throttling device when the throttling device is alternatively closed and opened in the opening process can be a preset fixed parameter, and can also be a parameter determined according to the actual running state of the multi-split air conditioner.
The throttle device cyclically performs the steps of closing the first duration and opening the second duration.
The first indoor units may have one or more, and when the first indoor units have more than one, the throttle device of each first indoor unit may be controlled to be alternately turned off and turned on. In addition, when the first indoor unit is more than one, the throttling device of the first indoor unit meeting the preset condition can be controlled to be alternatively closed and opened.
The preset wind speed is specifically the maximum wind speed of the first indoor unit allowed when the user in the working space of the indoor unit is satisfied with no-sense comfort in the first mode. The air outlet wind speed being smaller than or equal to the preset wind speed indicates that the indoor unit meets the windless comfort of indoor users, and the air outlet wind speed being larger than the preset wind speed indicates that the indoor unit does not meet the windless comfort of indoor users.
According to the control method of the multi-split air conditioner, based on the multi-split air conditioner comprising at least two indoor units, when a first indoor unit running in a first mode exists in the at least two indoor units, the throttling device of the first indoor unit is controlled to be alternately closed and opened, the first mode is operated to indicate whether the first indoor unit has a wind sensation requirement or not, the quantity of refrigerants flowing into other indoor units except the first indoor unit in the closing process of the throttling device is increased, the indoor units with other environment adjustment requirements are guaranteed to have enough energy for environment adjustment, the intermittent opening of the throttling device can ensure that the flowing-in refrigerants in the first indoor unit cannot be too much, the indoor space wind sensation requirement of the first indoor unit is guaranteed to be met, meanwhile, the heat exchange capacity cannot be too large to meet the comfort requirement of a user, and based on the method, the balance of requirements between the indoor units with the wind sensation requirement and the indoor units with other environment adjustment requirements can be achieved, so that the degree of the multi-split air conditioner on the wind sensation requirement and the wind sensation requirement of the environment adjustment requirements is improved, and the comfort of users in different spaces with the multi-split air conditioner effect is improved. When the multi-split air conditioner is in refrigeration operation, the opened indoor units are in an evaporation state, based on the fact that the throttling device is alternately closed and opened, the low-wind-speed air outlet of the first indoor unit is guaranteed, meanwhile, output cold energy cannot be too high, and condensation of the first indoor unit is effectively avoided.
Further, based on the above embodiment, another embodiment of the control method of the multi-split air conditioner is provided. In this embodiment, the second indoor unit is defined as the indoor unit operating in the second mode, the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and referring to fig. 4, the step of controlling the throttling device of the first indoor unit to be alternately turned off and turned on includes:
step S21, a first energy requirement value of the first indoor unit and a second energy requirement value of the second indoor unit are obtained;
in this embodiment, the first energy requirement value is a sum of energy requirements of all the first indoor units. The second energy requirement value is the sum of energy requirements of all the second indoor units.
In other embodiments, the first energy requirement may be an energy requirement of the current first indoor unit, and the second energy requirement may be an energy requirement of a second indoor unit adjacent to the first indoor unit or meeting a set condition.
Step S22, determining a target opening duration and/or a target closing duration according to the first energy requirement value and the second energy requirement value;
the different first energy requirement values and the different second energy requirement values correspond to different target on-periods and/or target off-periods.
Specifically, a corresponding relationship between the first energy requirement value and the second energy requirement value and the target opening duration and/or the target closing duration may be pre-established, where the corresponding relationship may include a mapping relationship, a calculating relationship, and other forms. And determining the target opening time and/or the target closing time corresponding to the current first energy requirement value and the second energy requirement value based on the corresponding relation.
In this embodiment, the target opening duration and the target closing duration are determined according to the first energy requirement value and the second energy requirement value. In other embodiments, one of the target opening duration and the target closing duration may also be determined according to the first energy requirement value and the second energy requirement value, and the other of the target opening duration and the target closing duration is determined as the corresponding preset parameter.
In this embodiment, the target opening time is longer than or equal to the target closing time, so as to ensure that the comfort of wind sensation and the comfort of temperature and humidity in the working space of the first indoor unit are effectively considered, and improve the comfort of users in the space of the first indoor unit. In other embodiments, the target on duration may also be less than the target off duration.
Step S23, controlling the throttling device to be alternately closed and opened according to the target opening duration and/or the target closing duration.
Specifically, the throttle device is controlled to be fully closed and the target closing time period is maintained, then the throttle device is controlled to be opened and the target opening time period is maintained, and then the throttle device is controlled to be fully closed and the target closing time period is returned to be executed.
In this embodiment, the opening duration and/or closing duration involved in the intermittent opening process of the throttling device in the first indoor unit are determined by combining the energy requirement values respectively corresponding to the first indoor unit and the second indoor unit, so that the control accuracy of the throttling device is improved, and the effective improvement of the degree of compromise between the windless requirements and other environmental regulation requirements of different indoor spaces in the process of alternately closing and opening the throttling device is ensured.
Further, in the present embodiment, step S22 includes: determining a ratio of the first energy requirement value to the second energy requirement value; determining the target opening duration and/or the target closing duration according to the ratio; the target closing time length is in negative correlation with the ratio, and the target opening time length is in positive correlation with the ratio.
Specifically, a numerical value interval in which the ratio is located is determined, and a preset opening duration and/or a preset closing duration associated with the numerical value interval are determined as corresponding target opening duration and/or target closing duration.
Defining a ratio ccb=a first energy requirement value/a second energy requirement value, and dividing at least two numerical intervals in advance, wherein different numerical intervals correspond to different preset opening time periods and preset closing time periods. Specifically, in this embodiment, the at least two value intervals include a first interval, a second interval, and a third interval, the value in the first interval is smaller than the value in the second interval, and the value in the second interval is smaller than the value in the third interval. The first interval corresponds to a first preset opening time period and a first preset closing time period, the second interval corresponds to a second preset opening time period and a second preset closing time period, and the third interval corresponds to a third preset opening time period and a third preset closing time period, wherein the first preset closing time period is greater than the second preset closing time period and greater than the third preset closing time period, and the first preset opening time period is greater than the second preset opening time period and greater than the third preset opening time period.
Based on the above, when the ratio is in the first interval, determining that the first preset opening time is the target opening time, and determining that the first preset closing time is the target closing time; when the ratio is in the second interval, determining a second preset opening time length as a target opening time length, and determining a second preset closing time length as a target closing time length; and when the ratio is in the third interval, determining a third preset opening time length as a target opening time length, and determining a third preset closing time length as a target closing time length.
In other embodiments, the target on-time and/or the target off-time may also be determined based on a difference between the first energy requirement value and the second energy requirement value.
Further, in an embodiment, the step of controlling the throttling device of the first indoor unit to be alternately turned off and on includes: and controlling the throttling device to be closed and opened at the minimum opening degree alternately. Specifically, the throttle device may be controlled to be alternately closed and opened with a minimum opening according to the target opening duration and/or the target closing duration. Based on the above, the throttling device is opened with the minimum opening in the process of alternately closing and opening the throttling device, so that the energy input by the first indoor unit is beneficial to meeting the basic temperature and humidity regulation requirement of the space of the first indoor unit when the throttling device is opened, and the energy input by the second indoor unit is ensured to be large enough to meet the user temperature and humidity comfort requirement of the space of the second indoor unit.
Further, in another embodiment, the second indoor unit is defined as the indoor unit operating in the second mode, the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and the step of controlling the throttling device of the first indoor unit to be alternately turned off and turned on includes: acquiring a first environment temperature of the first indoor unit acting space and a second environment temperature of the second indoor unit acting space; determining a first temperature difference value between the first ambient temperature and a first set temperature of the first indoor unit, and determining a second temperature difference value between the second ambient temperature and a second set temperature of the second indoor unit; determining a target opening according to the first temperature difference value and the second temperature difference value; and controlling the throttling device of the first indoor unit to be alternately closed and opened at the target opening degree.
When more than one first indoor unit is provided, the target opening degrees of different first indoor units can be different, and the target opening degree can be determined according to the corresponding first temperature difference value and the first temperature difference value in the process that the throttling device of each first indoor unit is alternately closed and opened. When more than one first indoor units are provided, the target opening degrees of all the first indoor units can be the same, first temperature difference values of the first environment temperature corresponding to each first indoor unit and the corresponding first set temperature can be respectively determined, first target temperature difference values (for example, the average value, the minimum value or the maximum value of the first temperature difference values and the like) are determined according to the first temperature difference values, and the target opening degrees are determined according to the first target temperature difference values and the second temperature difference values.
When the number of the second indoor units is more than one, a second target temperature difference value (for example, a mean value, a minimum value, a maximum value, or the like of a plurality of second temperature difference values) can be determined according to the corresponding more than one second temperature difference value, and a target opening degree can be determined according to the first temperature difference value and the second target temperature difference value. Specifically, the target opening corresponding to each first indoor unit may be determined according to the first temperature difference value and the second target temperature difference value; alternatively, the target opening degrees of all the first indoor units may be determined according to the first target temperature difference value and the second target temperature difference value.
In this embodiment, the target opening degree of the throttling device of the first indoor unit, which is opened in the process of alternately closing and opening the throttling device, is determined by combining the first temperature difference value and the second temperature difference value, so that the accuracy of controlling the opening degree of the throttling device is improved, the degree of considering the requirements of the multi-split air conditioner on no-wind feeling and other environment adjustment is further improved, and the user comfort in different spaces with the multi-split air conditioner is improved.
Further, based on any one of the above embodiments, another embodiment of a control method of the multi-split air conditioner is provided. In this embodiment, the indoor unit defining the second mode of operation is a second indoor unit, and the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after step S10, the method further includes:
when a first mode exists in at least two operation modes, and when the operation of the first indoor unit reaches a first preset condition, executing the step of controlling the throttling device of the first indoor unit to be alternately closed and opened; wherein the first preset condition includes at least one of the following conditions:
in the condition 1, the indoor units which are required in the at least two indoor units include the first indoor unit and the second indoor unit;
condition 2, the opening degree of the throttling device reaches the minimum opening degree; the method comprises the steps of,
in condition 3, at least one of a first condition and a second condition, where the first condition includes that a current superheat degree of the first indoor unit is smaller than a target superheat degree, the second condition includes that a first target temperature difference of an acting space of the second indoor unit is greater than or equal to a first preset temperature and/or a cooling speed is smaller than or equal to a preset speed, and the first target temperature difference includes a temperature difference value between the current indoor environment temperature and a corresponding second preset temperature.
In this embodiment, the first preset condition includes condition 1, condition 2, and condition 3 described above.
The indoor unit capable of being required refers to an indoor unit which is in an opened state and the ambient temperature in the working space of the indoor unit does not reach the set temperature.
The different first indoor units may correspond to different minimum openings.
The current superheat degree is specifically the temperature difference between the inlet temperature and the outlet temperature of the indoor heat exchanger in the first indoor unit.
The second set temperature is specifically a target value to be reached by the environmental temperature of the working space of the second indoor unit. The different second indoor units may correspond to different second set temperatures. When more than one second indoor unit exists, the first target temperature difference corresponding to any one second indoor unit is greater than or equal to the first preset temperature and/or the cooling speed is less than or equal to the preset speed, and the second condition can be considered to be met.
The cooling speed can be determined according to the temperature difference between the first indoor temperature and the second indoor temperature of the second indoor unit acting space detected by the interval set time length.
It should be noted that, when the first indoor unit is more than one, the throttling device of the first indoor unit reaching the first preset condition is alternately closed and turned off; the throttling device of the first indoor unit which does not reach the first preset condition maintains the current state to operate.
In this embodiment, the first indoor unit and the second indoor unit have the capability of being required at the same time, which indicates that the multi-split air conditioner has no wind sensing requirement and other environment regulation requirements at the same time, and because the space with no wind sensing requirement generally requires less energy, the throttling device of the first indoor unit is alternately closed and opened at the moment, so as to ensure that the space with other environment regulation requirements has enough energy output to ensure the comfort of users, and the improvement of different space comfort is facilitated; when the opening of the throttling device in the first indoor unit reaches the minimum opening, the fact that the opening of the throttling device of the first indoor unit can not be used for guaranteeing environmental regulation requirements such as temperature and humidity of other spaces is indicated, and at the moment, the throttling device of the first indoor unit is alternately closed and opened, so that the space with the other environmental regulation requirements is guaranteed to have enough energy output to guarantee the comfort of users, and the improvement of the comfort of different spaces is facilitated; when the current superheat degree is smaller than the target superheat degree, the heat exchange requirement of the first indoor unit is smaller, and when the target temperature difference and the cooling speed corresponding to the second indoor unit reach the second condition, the heat exchange requirement of the second indoor unit can be considered larger, and at the moment, the throttling device of the first indoor unit is alternately closed and opened, so that other environment adjustment requirement spaces are ensured to have enough energy output to ensure the comfort of users, and the improvement of different space comfort is facilitated.
Further, based on any one of the above embodiments, another embodiment of a control method of the multi-split air conditioner is provided. In this embodiment, the indoor unit defining the second mode of operation is a second indoor unit, and the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after step S20, the method further includes: when the operation of the multi-split air conditioner reaches a second preset condition, controlling the throttling device to stop alternately closing and opening;
wherein the second preset condition includes at least one of the following conditions:
in the condition 4, the indoor unit with energy requirement in the at least two indoor units is one of the first indoor unit and the second indoor unit;
the continuous operation time length of alternately opening and closing the throttling device is greater than or equal to a first preset time length;
and (6) the second target temperature difference of the acting space of the second indoor unit is smaller than a second preset temperature and lasts for a second preset time period, and the second target temperature difference comprises a temperature difference value between the current indoor environment temperature and the set temperature.
Specifically, the second preset condition may be adapted to the first preset condition setting, where the first preset condition includes condition 1, and the second preset condition includes condition 4; the first preset condition includes condition 3, and when the first mode exists in at least two operation modes, the first indoor unit is operated to reach the second condition, and the second preset condition includes condition 6.
In this embodiment, the first preset conditions include a condition 1, a condition 2, and a condition 3, and when the first mode exists in at least two operation modes, the first indoor unit operation reaches the condition 1, the condition 2, and the second condition, the second preset conditions include a condition 4, a condition 5, and a condition 6; the first indoor unit operation reaches the condition 1, the condition 2, and the first condition but does not reach the second condition, and the second preset condition includes the condition 4 and the condition 5.
In this embodiment, the indoor units that can be needed in the at least two indoor units are one of the first indoor unit and the second indoor unit, which indicates that only one of the at least two indoor units has an adjustment requirement, and the throttling device is not needed to be turned off and turned on alternately to balance different requirements, at this time, the throttling device exits the opening and closing alternately, so as to ensure that the operation of the first indoor unit meets the actual requirement of the working space, and improve the comfort of the user; the continuous operation time length of the throttling device in the first indoor unit for alternately opening and closing and opening is longer than or equal to the first preset time length, so that the special control time length of the first indoor unit is long, at the moment, in order to avoid the great fluctuation of the temperature and humidity of the working space of the first indoor unit, the throttling device is withdrawn from alternately opening and closing, so that the operation of the first indoor unit is ensured to meet the actual requirement of the working space of the first indoor unit, and the user comfort is improved; when the temperature difference between the indoor environment temperature in the acting space of the second indoor unit and the corresponding second set temperature is smaller, the heat exchange requirement of the acting space of the second indoor unit is smaller, the energy allocated by the multi-split air conditioner is required to be smaller, and at the moment, the throttling device is withdrawn to be alternately opened and closed, so that the space requirement of the second indoor unit is met, the operation of the first indoor unit is ensured to meet the actual requirement of the acting space of the first indoor unit, and the user comfort is improved.
Further, based on any one of the above embodiments, another embodiment of a control method of the multi-split air conditioner is provided. In this embodiment, the indoor unit defining the second mode of operation is a second indoor unit, and the air outlet wind speed corresponding to the second mode is greater than the preset wind speed, and after step S10, the method further includes:
when a first mode exists in at least two operation modes, and when the operation of the first indoor unit reaches a second condition, executing the step of controlling the throttling device in the first indoor unit to be alternately closed and opened, and controlling the multi-split air conditioner to increase the operation frequency of a compressor;
the second condition includes that a first target temperature difference of the acting space of the second indoor unit is greater than or equal to a first preset temperature and/or a cooling speed is less than or equal to a preset speed, and the first target temperature difference includes a temperature difference value between a current indoor environment temperature and a corresponding second set temperature.
Specifically, in this embodiment, when a first mode exists in at least two operation modes, and when the first indoor unit is operated to reach the condition 1 and the condition 2 in the first preset condition, and simultaneously meet the first condition and the second condition in the condition 3 or only meet the second condition in the condition 3, the throttling device in the first indoor unit may be controlled to be alternately turned off and turned on, and the multi-split air conditioner is controlled to increase the operation frequency of the compressor. When a first mode exists in at least two operation modes, and when the first indoor unit is operated to reach the condition 1 and the condition 2 in the first preset conditions and only meet the first condition in the condition 3, the throttling device in the first indoor unit can be controlled to be alternately closed and opened, and the multi-split air conditioner is controlled to maintain the current compressor frequency operation.
In other embodiments, when the first mode exists in at least two operation modes, and the first indoor unit does not reach the above condition 1 and condition 2 and satisfies the second condition in the condition 3, the throttling device in the first indoor unit may be controlled to be alternately turned off and on, and the multi-split air conditioner may be controlled to increase the operation frequency of the compressor. When the operation of the first indoor unit does not reach the condition 1 and the condition 2 but only meets the first condition in the condition 3, the throttling device in the first indoor unit can be controlled to be alternately closed and opened, and the multi-split air conditioner is controlled to maintain the current compressor frequency operation.
In this embodiment, when the throttling device of the first indoor unit is alternately turned off and turned on, when the second condition is met or the first condition and the second condition are met at the same time, it is indicated that the heat exchange requirement of the acting space of the second indoor unit is larger, and at this time, the operation frequency of the compressor is improved, so that the integral heat exchange output of the multi-split air conditioner is facilitated to be increased, so that the acting space of the second indoor unit is ensured to have enough heat exchange to meet the environmental regulation requirement thereof, and the comfort of the wind sensation in the space of the first indoor unit is ensured, and the comfort of the user in the acting space of the second indoor unit is improved.
Further, in this embodiment, the step of controlling the multi-split air conditioner to increase the operating frequency of the compressor includes: and controlling the second indoor unit to increase the energy demand coefficient so that the outdoor unit of the multi-split air conditioner increases the operating frequency of the compressor according to the energy demand coefficient.
In this embodiment, the control device may include a first controller disposed in the indoor units and a second controller disposed in the outdoor units, where the first controller of each indoor unit may send the energy demand coefficient of the indoor unit to the second controller of the outdoor unit, and the second controller may determine the operating frequency of the compressor according to all the received energy demand coefficients. Based on the above, the first controller can increase the energy demand coefficient of the second indoor unit and send the increased energy demand coefficient to the second controller, and the second controller can control the compressor to increase the operating frequency according to the increased energy demand coefficient after receiving the increased energy demand coefficient.
In other embodiments, the control device may also directly control the compressor to increase the operating frequency when the indoor and outdoor units are operated via the integrated control device.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium is stored with a control program of the multi-split air conditioner, and the control program of the multi-split air conditioner realizes the relevant steps of any embodiment of the control method of the multi-split air conditioner when being executed by a processor.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a multi-split air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (11)

1. The control method of the multi-split air conditioner is characterized by comprising at least two indoor units, and comprises the following steps of:
acquiring an operation mode of each indoor unit of the at least two indoor units; the operation mode comprises a first mode and a second mode, wherein the indoor unit operating the first mode is a first indoor unit, and the indoor unit operating the second mode is a second indoor unit; the first mode is a low wind speed mode in which the wind outlet speed of the indoor unit is smaller than or equal to a preset wind speed, and the second mode is a high wind speed mode in which the wind outlet speed of the indoor unit is larger than the preset wind speed; the preset wind speed is the maximum wind speed of the first indoor unit when the windless comfort of the user in the space where the indoor unit works is met in the first mode, the wind outlet wind speed is smaller than or equal to the preset wind speed to indicate that the indoor unit meets the windless comfort of the indoor user, and the wind outlet wind speed is larger than the preset wind speed to indicate that the indoor unit does not meet the windless comfort of the indoor user;
and when a first mode exists in the operation modes of the indoor units, controlling the throttling device of the first indoor unit to be alternately closed and opened.
2. The method for controlling a multi-split air conditioner as claimed in claim 1, wherein the controlling the throttling means of the first indoor unit to be alternately turned off and on comprises:
acquiring a first energy requirement value of the first indoor unit and a second energy requirement value of the second indoor unit;
determining a target opening duration and/or a target closing duration according to the first energy requirement value and the second energy requirement value;
and controlling the throttling device to be alternately closed and opened according to the target opening duration and/or the target closing duration.
3. The method for controlling a multi-split air conditioner as claimed in claim 2, wherein the step of determining the target on-time and/or the target off-time according to the first energy requirement value and the second energy requirement value comprises:
determining a ratio of the first energy requirement value to the second energy requirement value;
determining the target opening duration and/or the target closing duration according to the ratio;
the target closing time length is in negative correlation with the ratio, and the target opening time length is in positive correlation with the ratio.
4. The method for controlling a multi-split air conditioner as claimed in claim 1, wherein the controlling the throttling means of the first indoor unit to be alternately turned off and on comprises:
and controlling the throttling device to be closed and opened at the minimum opening degree alternately.
5. The method for controlling a multi-split air conditioner as claimed in claim 1, wherein the controlling the throttling means of the first indoor unit to be alternately turned off and on comprises:
acquiring a first environment temperature of the first indoor unit acting space and a second environment temperature of the second indoor unit acting space;
determining a first temperature difference value between the first ambient temperature and a first set temperature of the first indoor unit, and determining a second temperature difference value between the second ambient temperature and a second set temperature of the second indoor unit;
determining a target opening according to the first temperature difference value and the second temperature difference value;
and controlling the throttling device of the first indoor unit to be alternately closed and opened at the target opening.
6. The method for controlling a multi-split air conditioner as claimed in claim 1, further comprising, after the step of obtaining the operation mode of each of the at least two indoor units:
when the first mode exists in the operation modes of the indoor units, and when the operation of the first indoor unit reaches a first preset condition, the step of controlling the throttling device of the first indoor unit to be alternately closed and opened is executed; wherein the first preset condition includes at least one of the following conditions:
the indoor units which are needed in the at least two indoor units comprise the first indoor unit and the second indoor unit;
the opening of the throttling device reaches the minimum opening; the method comprises the steps of,
at least one of a first condition and a second condition, wherein the first condition comprises that the current superheat degree of the first indoor unit is smaller than a target superheat degree, the second condition comprises that a first target temperature difference of an acting space of the second indoor unit is larger than or equal to a first preset temperature and/or a cooling speed is smaller than or equal to a preset speed, and the first target temperature difference comprises a temperature difference value of the current indoor environment temperature and a corresponding second set temperature.
7. The method for controlling a multi-split air conditioner as claimed in claim 1, wherein after the step of controlling the throttling device of the first indoor unit to be alternately turned off and on, the method further comprises:
when the operation of the multi-split air conditioner reaches a second preset condition, controlling the throttling device to stop alternately closing and opening; wherein the second preset condition includes at least one of the following conditions:
the indoor unit which is provided with energy in the at least two indoor units is one of the first indoor unit and the second indoor unit;
the continuous operation time length of the throttle device which is alternately opened and closed is greater than or equal to a first preset time length;
the second target temperature difference of the acting space of the second indoor unit is smaller than a second preset temperature and lasts for a second preset duration, and the second target temperature difference comprises a temperature difference value between the current indoor environment temperature and a corresponding second preset temperature.
8. The control method of a multi-split air conditioner as claimed in any one of claims 1 to 7, further comprising, after the step of obtaining an operation mode of each of the at least two indoor units:
when the first mode exists in the operation modes of the indoor units, and when the first indoor unit is operated to reach the second condition, executing the step of controlling the throttling device in the first indoor unit to be alternately closed and opened, and controlling the multi-split air conditioner to improve the operation frequency of the compressor;
the second condition includes that a first target temperature difference of the acting space of the second indoor unit is greater than or equal to a first preset temperature and/or a cooling speed is less than or equal to a preset speed, and the first target temperature difference includes a temperature difference value between a current indoor environment temperature and a corresponding second set temperature.
9. The method for controlling a multi-split air conditioner as claimed in claim 8, wherein the step of controlling the multi-split air conditioner to increase the operation frequency of the compressor comprises:
and controlling the second indoor unit to increase the energy demand coefficient so that the outdoor unit of the multi-split air conditioner increases the operating frequency of the compressor according to the energy demand coefficient.
10. The utility model provides a many online air conditioner which characterized in that, many online air conditioner includes:
at least two indoor units;
and a control device, wherein the at least two indoor units are connected with the control device, and the control device comprises: the method for controlling the multi-split air conditioner comprises a memory, a processor and a control program of the multi-split air conditioner, wherein the control program is stored in the memory and can run on the processor, and the control program of the multi-split air conditioner realizes the steps of the control method for the multi-split air conditioner according to any one of claims 1 to 9 when being executed by the processor.
11. A storage medium, wherein a control program of a multi-split air conditioner is stored on the storage medium, and when the control program of the multi-split air conditioner is executed by a processor, the steps of the control method of the multi-split air conditioner according to any one of claims 1 to 9 are implemented.
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