CN115704597A - Multi-split air conditioner, control method thereof and computer readable storage medium - Google Patents

Multi-split air conditioner, control method thereof and computer readable storage medium Download PDF

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Publication number
CN115704597A
CN115704597A CN202110920084.0A CN202110920084A CN115704597A CN 115704597 A CN115704597 A CN 115704597A CN 202110920084 A CN202110920084 A CN 202110920084A CN 115704597 A CN115704597 A CN 115704597A
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China
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target
air conditioner
preset
evaporation
split air
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CN202110920084.0A
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Chinese (zh)
Inventor
张�浩
朱声浩
李健锋
黎顺全
王正兴
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GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
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Priority to CN202110920084.0A priority Critical patent/CN115704597A/en
Priority to PCT/CN2022/089832 priority patent/WO2023015964A1/en
Publication of CN115704597A publication Critical patent/CN115704597A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • 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)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Atmospheric Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mathematical Physics (AREA)
  • Fuzzy Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method of a multi-split air conditioner, which comprises the following steps: when the multi-split air conditioner is in refrigerating operation, if an indoor unit of at least two indoor units starts a preset wind sensation mode, controlling the compressor to operate according to a first evaporation parameter; the air outlet speed of the corresponding indoor unit in the preset wind sensing mode is smaller than the preset air speed; when the operation of the multi-split air conditioner reaches a first preset condition, controlling the operation of the compressor according to a second evaporation parameter; the first evaporation parameter and the second evaporation parameter are both characterization parameters of a target evaporation state required to be achieved by an indoor heat exchanger in the indoor unit, and the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than the temperature of the indoor heat exchanger corresponding to the first evaporation parameter. The invention also discloses a multi-split air conditioner and a computer readable storage medium. The invention aims to realize effective compromise between condensation prevention and refrigeration effect when the multi-split air conditioner is started without a wind sensing function.

Description

Multi-split air conditioner, control method thereof and computer readable storage medium
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a method for controlling a multi-split air conditioner, and a computer-readable storage medium.
Background
The multi-split air conditioner generally has one outdoor unit connected to more than one indoor unit. With the development of economic technology, the application of the multi-split air conditioner is more and more extensive, and the performance requirements of users on the multi-split air conditioner are continuously improved.
At present, when an indoor unit of a multi-split air conditioner is started to have a no-wind-sensation function, an outdoor unit is generally directly switched to a fixed low-frequency operation to prevent condensation of the indoor unit, however, the refrigeration effect of the indoor unit is easily affected, especially the refrigeration effect of the indoor unit without the no-wind-sensation function is not started. Therefore, the condensation prevention effect and the refrigeration effect cannot be effectively considered in the regulation and control process of the existing multi-split air conditioner after the non-wind-sensing function is started.
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 computer readable storage medium, aiming at effectively giving consideration to condensation prevention and refrigeration effects when the multi-split air conditioner is started to have a no-wind-sense function.
In order to achieve the above object, the present invention provides a method for controlling a multi-split air conditioner, where the multi-split air conditioner includes a compressor and at least two indoor units, the compressor is connected to each of the indoor units, and the method for controlling the multi-split air conditioner includes the following steps:
when the multi-split air conditioner is in refrigerating operation, if an indoor unit of the at least two indoor units starts a preset wind sensing mode, controlling the compressor to operate according to a first evaporation parameter; the air outlet speed of the corresponding indoor unit in the preset wind sensing mode is smaller than the preset air speed;
when the operation of the multi-split air conditioner reaches a first preset condition, controlling the operation of the compressor according to a second evaporation parameter;
the first evaporation parameter and the second evaporation parameter are both characterization parameters of a target evaporation state required to be achieved by an indoor heat exchanger in the indoor unit, and the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than the temperature of the indoor heat exchanger corresponding to the first evaporation parameter.
Optionally, before the step of controlling the operation of the compressor according to the second evaporation parameter, the method further includes:
when the operation of the multi-split air conditioner reaches a first preset condition, acquiring a first environment humidity of a space where an indoor unit of the preset wind sensation mode is started;
determining the second evaporation parameter from the first ambient humidity.
Optionally, the step of obtaining a first ambient humidity of a space where the indoor unit that starts the preset wind sensation mode is located includes:
if the number of the target indoor units is more than one, acquiring the sub-environment humidity of the space where each indoor unit which starts the preset wind sensation mode is located;
determining the first ambient humidity from more than one of the sub-ambient humidities.
Optionally, the step of determining the first ambient humidity from more than one of the sub-ambient humidities comprises:
determining the sub-ambient humidity with the largest value among more than one sub-ambient humidities as the first ambient humidity.
Optionally, after the step of controlling the operation of the compressor according to the first evaporation parameter, the method further includes:
acquiring the number of target indoor units and the continuous operation time of the compressor after the preset wind sensation mode is started; the target indoor unit is one of the at least two indoor units, and the preset wind sensation mode is started;
when the number of the target indoor units is larger than or equal to the target number and the continuous operation duration is larger than or equal to the preset duration, determining that the multi-split air conditioner is operated to reach the first preset condition;
and when the number of the target indoor units is smaller than the target number or the continuous operation duration is smaller than the preset duration, returning to the step of controlling the compressor to operate according to the first evaporation parameter.
Optionally, before the step of determining that the operation of the multi-split air conditioner reaches the preset condition when the number of the target indoor units is greater than or equal to the target number and the continuous operation duration is greater than or equal to the preset duration, the method further includes:
and acquiring the total number of the indoor units which are in the opening state currently in the at least two indoor units as the target number.
Optionally, the first evaporation parameter comprises a first evaporation temperature, the second evaporation parameter comprises a second evaporation temperature, and the first evaporation temperature is less than the second evaporation temperature;
or, the first evaporation parameter comprises a first evaporation pressure, the second evaporation parameter comprises a second evaporation pressure, and the first evaporation pressure is less than the second evaporation pressure.
Optionally, during the step of controlling the operation of the compressor according to the first evaporation parameter, the method further includes:
controlling a target electronic expansion valve to adjust the opening degree according to a preset superheat degree;
and defining a target indoor unit as one of the at least two indoor units, which is opened in the preset wind sensation mode, wherein the target electronic expansion valve is an electronic expansion valve in the target indoor unit.
Optionally, after the step of controlling the operation of the compressor according to the second evaporation parameter, the method further includes:
when the running of the multi-split air conditioner reaches a second preset condition, controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree;
the target superheat degree is determined according to the second ambient humidity of the space where the target indoor unit is located, and the target superheat degree is larger than or equal to the preset superheat degree.
Optionally, the second preset condition comprises at least one of:
the duration of the target indoor unit starting the preset wind sensation mode is longer than a set duration;
the current evaporation temperature of the target indoor unit is less than the target evaporation temperature, or the current evaporation pressure of the target indoor unit is less than the target evaporation pressure; the target evaporation temperature or the target evaporation pressure is determined according to the second ambient humidity;
the exhaust temperature of the compressor is lower than the preset exhaust temperature;
and the exhaust superheat degree of the compressor is less than the preset exhaust superheat degree.
Optionally, after the step of controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree, the method further comprises:
when the operation of the multi-split air conditioner reaches a third preset condition, returning to execute the step of controlling the target electronic expansion valve to adjust the opening degree according to the preset superheat degree;
the third preset condition includes at least one of:
the target indoor unit exits the preset wind sensation mode;
the exhaust temperature of the compressor is greater than or equal to a preset exhaust temperature;
and the discharge superheat degree of the compressor is greater than or equal to a preset discharge superheat degree.
In addition, in order to achieve the above object, the present application also provides a multi-split air conditioner including:
at least two indoor units;
a compressor connected to each of the indoor units;
the controlling means, the indoor set with the compressor all with controlling means connects, controlling means includes: the control method comprises the steps of a memory, a processor and a control program of the multi-split air conditioner, wherein the control program of the multi-split air conditioner is stored on the memory and can run on the processor, and when the control program of the multi-split air conditioner is executed by the processor, the control method of the multi-split air conditioner is realized.
In addition, in order to achieve the above object, the present application also proposes a computer-readable storage medium having a control program of a multi-split air conditioner stored thereon, which when executed by a processor, implements the steps of the control method of the multi-split air conditioner as set forth in any one of the above.
The invention provides a control method of a multi-split air conditioner, which is based on the multi-split air conditioner comprising a compressor and at least two indoor units connected with the compressor, wherein when the multi-split air conditioner is operated in a refrigerating mode, and a preset wind sensation mode with low wind speed needs to be started in the indoor units, the compressor is not directly switched to be operated at a fixed low frequency, but the compressor is controlled to operate by a first evaporation parameter, so that an indoor heat exchanger of the indoor unit can have lower temperature to realize rapid temperature reduction, and therefore, the indoor refrigerating effect is ensured.
Drawings
Fig. 1 is a schematic diagram of a hardware structure involved in the operation of an embodiment of the multiple on-line air conditioner of the present invention;
fig. 2 is a schematic flowchart illustrating a control method of a multi-split air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic flowchart illustrating a control method of a multi-split air conditioner according to another embodiment of the present invention;
fig. 4 is a schematic flowchart illustrating a control method of a multi-split air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of a multi-split air conditioner according to still another embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: based on a multi-split air conditioner provided with a compressor and at least two indoor units connected with the compressor, when the multi-split air conditioner is in refrigeration operation, if an indoor unit of the at least two indoor units starts a preset wind sensation mode, the compressor is controlled to operate according to a first evaporation parameter; the air outlet speed of the target indoor unit in the preset wind sensing mode is smaller than a preset wind speed; when the operation of the multi-split air conditioner reaches a first preset condition, controlling the operation of the compressor according to a second evaporation parameter; the first evaporation parameter and the second evaporation parameter are both characterization parameters of a target evaporation state required to be achieved by an indoor heat exchanger in the indoor unit, and the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than the temperature of the indoor heat exchanger corresponding to the first evaporation parameter.
In the prior art, when the indoor unit of the multi-split air conditioner is turned on without the wind sensing function, the outdoor unit is generally directly switched to the low-frequency operation to prevent the indoor unit from being condensed, however, the refrigeration effect of the indoor unit is easily affected, especially the refrigeration effect of the indoor unit without the wind sensing function is not turned on. Therefore, the condensation prevention and the refrigeration effect cannot be effectively considered in the regulation and control process of the prior multi-split air conditioner after the non-wind-sensing function is started.
The invention provides the solution, and aims to realize effective consideration of condensation prevention and refrigeration effects when the multi-split air conditioner is started without a wind-sensing function.
The embodiment of the invention provides a multi-split air conditioner.
Specifically, in this embodiment, referring to fig. 1, the multi-split air conditioner includes a compressor 1, at least two indoor units 2, and a control device, where the compressor 1 is connected to each of the indoor units 2, and both the compressor 1 and each of the indoor units 2 are connected to the control device. At least two indoor units 2 are arranged in parallel. In this embodiment, the number of the indoor units 2 is 3, and in other embodiments, the number of the indoor units 2 may also be set to be a greater or smaller number according to actual requirements, such as 2, 4, 5, and so on. Different indoor units 2 are distributed in different spatial areas.
Each indoor unit 2 comprises an indoor heat exchanger and an electronic expansion valve connected with the indoor heat exchanger in series, and the electronic expansion valve can be used for adjusting the refrigerant flow of the indoor heat exchanger connected with the indoor heat exchanger in series. Specifically, since the indoor units 2 are arranged in parallel, the refrigerant flow of the indoor heat exchangers connected in series can be synchronously influenced while the electronic expansion valve adjusts the refrigerant flow of the other indoor heat exchangers connected in parallel. For example, when the electronic expansion valve decreases the opening degree to decrease the flow rate of the indoor heat exchangers connected in series, the refrigerant flow rate of the other indoor heat exchangers connected in parallel to the other indoor heat exchanger is increased without changing the opening degree of the electronic expansion valve of the other indoor unit 2.
Specifically, each indoor unit 2 may further include an indoor fan disposed corresponding to the indoor heat exchanger, when the indoor fan is turned on, the air in the space where the indoor unit 2 is located may be driven to enter the indoor unit 2 and be subjected to heat exchange by the corresponding indoor heat exchanger, and the air after heat exchange is sent to the space where the indoor unit 2 is located.
Further, at least one humidity sensor 3 may be disposed in each indoor unit 2, so as to detect the indoor ambient humidity of the space where each indoor unit 2 is located. Humidity sensor 3 can be connected with controlling means, and controlling means can acquire the humidity data that humidity sensor 3 detected.
Further, the multi-split air conditioner may be further provided with a first temperature sensor 4 for detecting a discharge temperature of the compressor 1. Specifically, the first temperature sensor 4 may be provided at an exhaust port of the compressor 1. The first temperature sensor 4 may be connected to a control device, and the control device may acquire temperature data detected by the first temperature sensor 4.
Further, the multi-split air conditioner may be further provided with more than one second temperature sensor 5 for detecting the evaporation temperature of the indoor heat exchanger. Specifically, at least one second temperature sensor 5 is provided in each indoor unit 2. The second temperature sensor 5 may be provided in the middle of the coil of the indoor heat exchanger. The second temperature sensor 5 may be connected to a control device, and the control device may acquire temperature data detected by the second temperature sensor 5.
Further, in an embodiment of the present invention, referring to fig. 1, a control apparatus of a multi-split air conditioner includes: a processor 1001 (e.g., CPU), memory 1002, etc. The processor 1001 and the memory 1002 are connected by a communication bus. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a control program of the multi-split air conditioner may be included in a memory 1002, which is a computer-readable storage medium. In the apparatus shown in fig. 1, the processor 1001 may be configured to call a control program of the multi-split air conditioner stored in the memory 1002 and perform operations of relevant steps 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 control the multi-split air conditioner.
Referring to fig. 2, an embodiment of a method for controlling a multi-split air conditioner of the present application is provided. In this embodiment, the method for controlling a multi-split air conditioner includes:
step 10, when the multi-split air conditioner is in refrigerating operation, if an indoor unit of the at least two indoor units starts a preset wind sensing mode, controlling the compressor to operate according to a first evaporation parameter; the air outlet speed of the corresponding indoor unit in the preset wind sensing mode is smaller than the preset air speed;
and in the process of the multi-split air-conditioning cooling operation, at least one indoor unit in all the indoor units of the multi-split air conditioner is started and performs cooling operation. Specifically, a part of indoor units may be in refrigeration operation, another part of indoor units may be off, or all indoor units may be in refrigeration operation, and specifically, the operation may be based on the actual refrigeration requirement of the space where the indoor units are located.
The preset wind speed can be a parameter configured by default of the system or a parameter set by a user. The air outlet speed is lower than the preset air speed, which indicates that the air outlet speed of the target indoor unit is lower, and the target indoor unit needs low air speed air supply under the preset wind sensing mode so as to meet the comfort of users in the space where the target indoor unit is located. The preset wind sensation mode can be started by a user inputting a control command, and can also be started when the indoor unit monitors that the scene parameters of the space where the indoor unit is located reach a preset state. In this embodiment, the preset wind sensation mode is a no-wind sensation mode.
And starting a preset wind induction mode for part or all of the indoor units in at least one indoor unit in refrigeration operation, and controlling the compressor to operate according to the first evaporation parameter.
The first evaporation parameter may be a preset fixed parameter (the operation frequency of the compressor corresponding to the first evaporation parameter is greater than a set frequency value, that is, the operation frequency of the compressor corresponding to the first evaporation parameter is a medium-high frequency), or may be a characteristic parameter of a target evaporation state of the indoor heat exchanger when any indoor unit starts the preset wind sensation mode (that is, when the indoor unit does not start the preset wind sensation mode enters a state that the indoor unit starts the preset wind sensation mode), or may be a parameter determined according to a current operation condition of the multi-split air conditioner.
The first evaporation parameter may be any parameter that characterizes a target evaporation state that the target heat exchanger needs to achieve. In the present embodiment, the first evaporation parameter includes a target value of at least one of an evaporation temperature and an evaporation pressure of the indoor heat exchanger. The temperature of the indoor heat exchanger corresponding to the first evaporation parameter is smaller than a set temperature threshold.
Specifically, the step of controlling the operation of the compressor according to the first evaporation parameter refers to adjusting the operation frequency of the compressor, so that the actual evaporation state of the indoor heat exchanger in part of or all of the indoor units or the indoor unit in which the preset wind sensation mode is started can reach the target evaporation state corresponding to the first evaporation parameter.
Specifically, different first evaporation parameters correspond to different compressor operating frequencies. The lower the temperature of the indoor heat exchanger corresponding to the first evaporation parameter is, the higher the running frequency of the compressor is.
In this embodiment, the first evaporation parameter is a preset fixed parameter, and when the at least one indoor unit starts the preset wind sensation modes, no matter how many preset wind sensation modes are started, at an initial stage of starting the preset wind sensation modes, the compressor is controlled to operate according to the preset first evaporation parameter.
Step S20, when the operation of the multi-split air conditioner reaches a first preset condition, controlling the operation of the compressor according to a second evaporation parameter; the first evaporation parameter and the second evaporation parameter are both characterization parameters of a target evaporation state required to be achieved by an indoor heat exchanger in the indoor unit, and the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than the temperature of the indoor heat exchanger corresponding to the first evaporation parameter.
The first preset condition is specifically a condition required to be achieved by the operating parameters of the multi-split air conditioner or the environmental parameters of the environment where the multi-split air conditioner is located when the multi-split air conditioner does not have a condensation risk or when the refrigeration requirement of the target indoor unit is basically met. The first preset condition can be set according to actual requirements.
The second evaporation parameter may be a preset fixed parameter (the operation frequency of the compressor corresponding to the second evaporation parameter is greater than the set frequency value, that is, the operation frequency of the compressor corresponding to the second evaporation parameter is a medium-low frequency), or may be a parameter determined according to a current operation state of the multi-split air conditioner or an environmental parameter (such as temperature and/or humidity) of an environment where the indoor unit of the preset air sensation mode is started.
The second evaporation parameter may be any parameter that characterizes the target evaporation state that the target heat exchanger needs to achieve. In this embodiment, the second evaporation parameter includes a target value of at least one of an evaporation temperature and an evaporation pressure of the indoor heat exchanger. The temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than a set temperature threshold.
Controlling the operation of the compressor according to the second evaporation parameter specifically refers to adjusting the operation frequency of the compressor, so that the actual evaporation state of the indoor heat exchanger in part of the indoor units or all the indoor units or the indoor units in which the preset wind sensation mode is started can reach the target evaporation state corresponding to the second evaporation parameter.
Specifically, the different second evaporation parameters correspond to different compressor operating frequencies. The higher the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is, the lower the running frequency of the compressor is.
The frequency of the compressor corresponding to the second evaporation parameter is less than or equal to the frequency of the compressor corresponding to the first evaporation parameter.
Further, in this embodiment, the first evaporation parameter includes a first evaporation temperature, the second evaporation parameter includes a second evaporation temperature, and the first evaporation temperature is less than the second evaporation temperature. Or, the first evaporation parameter comprises a first evaporation pressure, the second evaporation parameter comprises a second evaporation pressure, and the first evaporation pressure is smaller than the second evaporation pressure.
The embodiment of the invention provides a control method of a multi-split air conditioner, which is based on the multi-split air conditioner comprising a compressor and at least two indoor units connected with the compressor, wherein when the multi-split air conditioner is operated in a refrigerating mode, and a preset wind sensation mode with low wind speed needs to be started in the indoor units, the compressor is not directly switched to be operated at a fixed low frequency, but the compressor is controlled to operate by a first evaporation parameter, so that an indoor heat exchanger of the indoor unit can have lower temperature to realize rapid temperature reduction, and therefore, the indoor refrigerating effect is ensured.
Further, based on the above embodiment, another embodiment of the control method of the multi-split air conditioner is provided. In this embodiment, the step of controlling the operation of the compressor according to the second evaporation parameter is defined as step S20a, and referring to fig. 3, before step S20a, the method further includes:
step S201, when the operation of the multi-split air conditioner reaches a first preset condition, acquiring a first environment humidity of a space where an indoor unit of a preset wind sensation mode is started;
and defining an indoor unit which is used for starting a preset wind sensation mode in at least two indoor units as a target indoor unit.
In the process of operating the target indoor unit in the preset wind sensation mode, the indoor environment humidity of the space where the target indoor unit is located can be detected in real time or at intervals of set duration. The indoor environment humidity of the space where the target indoor unit is located can be detected through a humidity sensor arranged on the target indoor unit.
Step S202, determining the second evaporation parameter according to the first ambient humidity.
The indoor heat exchanger temperatures corresponding to the second evaporation parameters corresponding to different first ambient humidity have different values. Specifically, the greater the first ambient humidity is, the greater the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is. Conversely, the smaller the first ambient humidity is, the smaller the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is.
The corresponding relationship between the first ambient humidity and the second evaporation parameter can be preset, and can be in the form of a calculation formula, a mapping relationship and the like. Based on the correspondence, a second evaporation parameter corresponding to the current first ambient humidity may be determined. For example, a calculation formula between the humidity and the superheat degree can be preset, and a second evaporation parameter corresponding to the target indoor unit can be calculated by substituting the first environmental humidity of the current target indoor unit into the calculation formula; or a mapping table between the humidity and the superheat degree can be preset, the mapping table is inquired according to the first environment humidity of the current target indoor unit, and a result obtained through matching can be used as a second evaporation parameter corresponding to the target indoor unit.
When the number of the target indoor units is more than one, namely the number of the indoor units which start the preset wind sensation mode is more than one, determining a second evaporation parameter according to the corresponding first environmental humidity of the more than one target indoor units; the second evaporation parameter may also be determined by determining the first ambient humidity of the target indoor unit with the highest priority among the more than one target indoor units (e.g., the priority of the target indoor unit with a person in the corresponding indoor space is higher than that of the target indoor unit without a person in the corresponding indoor space, or the priority of the target indoor unit with a preset type of device (e.g., precision device) in the corresponding indoor space is higher than that of the other target indoor units, etc.).
Further, the number of target indoor units is different, and the correspondence between the first ambient humidity and the second evaporation parameter may be different. Specifically, more than one preset corresponding relation between the humidity and the evaporation parameters can be preset, each preset corresponding relation can be associated with different numbers, based on the preset corresponding relations, the number of the indoor units which are currently started in the preset wind sensation mode can be determined, the preset corresponding relation associated with the number is obtained, and the second evaporation parameter corresponding to the first environment humidity is determined based on the obtained preset corresponding relation.
In this embodiment, on the basis of the refrigeration effect is guaranteed through lower indoor heat exchanger temperature in the first stage, combine to open the ambient humidity in the space that the indoor set of predetermineeing the wind sense mode in the second stage and confirm the second evaporation parameter, thereby guarantee the accuracy of the second evaporation parameter confirmed, realize the operation of compressor and open the ambient humidity condition phase-match of the indoor set of predetermineeing the wind sense mode, guarantee to control the compressor operation according to the second evaporation parameter, can guarantee that the air-out temperature of the indoor set of opening the predetermined wind sense mode can not be crossed lowly, effectively prevent the indoor set condensation problem from appearing.
Further, in this embodiment, the process of acquiring the first ambient humidity is specifically as follows: if the number of the target indoor units is more than one, acquiring the sub-environment humidity of the space where each indoor unit which starts the preset wind sensation mode is located; determining the first ambient humidity from more than one of the sub-ambient humidities.
Specifically, one of the plurality of sub-ambient humidities may be selected as the first ambient humidity; the first ambient humidity may also be calculated by integrating more than one sub-ambient humidity.
In this embodiment, among more than one sub-ambient humidity, the sub-ambient humidity with the largest value is determined as the first ambient humidity. In other embodiments, the average of more than one sub-ambient humidity may also be taken as the first ambient humidity.
In this embodiment, when more than one indoor unit starts the preset wind sensation mode, the sub-humidities respectively corresponding to the spaces where the indoor units are located are integrated to determine the second evaporation parameter for controlling the operation of the compressor, so that the operation of the compressor can be ensured that each indoor unit starting the preset wind sensation mode does not generate a condensation condition. The second evaporation parameter is determined by taking the maximum sub-environment humidity as the first environment humidity, so that the condensation phenomenon of all indoor units which are started in the preset wind sensing mode can be further prevented, and the normal operation of the multi-split air conditioner can be ensured.
Further, based on any one of the above embodiments, another embodiment of the control method of the multi-split air conditioner is provided. In this embodiment, referring to fig. 4, after step S10, the method further includes:
step S101, acquiring the number of target indoor units and the continuous operation time of the compressor after the preset wind sensation mode is started; the target indoor unit is one of the at least two indoor units, and the preset wind sensation mode is started;
step S102, judging whether the number of the target indoor units is greater than or equal to a target number and whether the continuous operation time length is greater than or equal to a preset time length;
when the number of the target indoor units is greater than or equal to the target number and the continuous operation duration is greater than or equal to the preset duration, executing step S103;
step S103, determining that the operation of the multi-split air conditioner reaches the first preset condition; and when the number of the target indoor units is smaller than the target number, or when the continuous operation time length is smaller than the preset time length, returning to execute the step S10.
The target number may be a preset number or a number determined according to the total number of indoor units currently in an on state in the multi-split air conditioner. The target number is less than or equal to the total number of indoor units in the on state.
In this embodiment, the total number of the indoor units currently in the on state in the at least two indoor units is obtained as the target number. That is, when all the opened indoor units are opened in the preset wind sensing mode, the compressor is operated at a lower frequency by increasing the evaporation parameters, otherwise, the compressor is operated at a higher frequency by maintaining the lower evaporation parameters.
In this embodiment, when the number of the indoor units which are turned on in the preset wind sensation mode is enough and the continuous operation time of the compressor is long enough, the compressor is operated in a frequency reduction mode by increasing the evaporation parameter, otherwise, the compressor is operated at a higher frequency by maintaining a lower evaporation parameter, so that the refrigeration effect of the indoor units which are not turned on in the preset wind sensation mode is prevented from being influenced by the unnecessary frequency reduction of the compressor.
Further, based on any of the above embodiments, a further embodiment of the control method of the multi-split air conditioner is provided. In this embodiment, referring to fig. 5, in the process executed in step S10, the method further includes:
step S100, controlling a target electronic expansion valve to adjust the opening degree according to a preset superheat degree;
and defining a target indoor unit as one of the at least two indoor units, which is opened in the preset wind sensation mode, wherein the target electronic expansion valve is an electronic expansion valve in the target indoor unit.
The preset superheat degree is a preset target value of the superheat degree of the indoor heat exchanger, which is set in advance to achieve the aim of temperature reduction in the preset wind induction mode. When the refrigerant outlet temperature of the indoor heat exchanger is defined as T2B and the refrigerant inlet temperature of the indoor heat exchanger is defined as T2A, the superheat SH = T2B-T2A.
And adjusting the opening degree of the electronic expansion valve according to the preset superheat degree so as to enable the actual superheat degree of the indoor heat exchanger in the target indoor unit to reach the preset superheat degree.
The larger the target value of the superheat degree of the indoor heat exchanger is, the smaller the opening degree of the electronic expansion valve is; conversely, the smaller the target value of the degree of superheat of the indoor heat exchanger, the larger the opening degree of the electronic expansion valve.
In this embodiment, at the starting stage of the preset wind sensation mode of the indoor unit, in the process of controlling the operation of the compressor according to the first evaporation parameter, the electronic expansion valve of the target indoor unit is controlled at the preset superheat degree, so that the ambient temperature of the space where the target indoor unit requiring low-wind-speed air outlet is located can be rapidly reduced at the initial stage of the preset wind sensation mode, and the thermal comfort of the user of the space where the target indoor unit is located is ensured.
Further, in this embodiment, referring to fig. 5, after step S20, the method further includes:
step S30, when the operation of the multi-split air conditioner reaches a second preset condition, controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree;
the target superheat degree is determined according to the second ambient humidity of the space where the target indoor unit is located, and the target superheat degree is larger than or equal to the preset superheat degree.
The second preset condition is specifically a condition that is required to be met by the preset operating parameters of the air conditioner or the environmental parameters of the environment where the air conditioner is located when the target indoor unit has a condensation risk.
Specifically, the opening degree of the electronic expansion valve in the target indoor unit is adjusted by taking the target superheat degree as a target, so that the flow of the refrigerant in the indoor heat exchanger in the target indoor unit is adjusted, and the actual superheat degree of the indoor heat exchanger in the target indoor unit reaches the target superheat degree.
The larger the target value of the superheat degree of the indoor heat exchanger is, the smaller the opening degree of the electronic expansion valve is; conversely, the smaller the target value of the degree of superheat of the indoor heat exchanger, the larger the opening degree of the electronic expansion valve. Based on the control method, the opening degree of the electronic expansion valve during the operation of the electronic expansion valve is controlled according to the preset superheat degree and is larger than or equal to the opening degree of the electronic expansion valve during the operation of the electronic expansion valve controlled according to the target superheat degree.
And when the number of the target indoor units is more than one, respectively controlling the electronic expansion valve in each target indoor unit to adjust the opening according to the target superheat degree corresponding to each target indoor unit. For example, any two indoor units of more than one target indoor unit are respectively defined as a first indoor unit and a second indoor unit, the target superheat degree corresponding to the first indoor unit is a first superheat degree, the target superheat degree corresponding to the second indoor unit is a second superheat degree, and an electronic expansion valve in the first indoor unit is controlled to adjust the opening according to the first superheat degree so as to enable the actual superheat degree of an indoor heat exchanger in the first indoor unit to reach the first superheat degree; and controlling an electronic expansion valve in the second indoor unit to adjust the opening according to the second superheat degree so as to enable the actual opening of the indoor heat exchanger in the second indoor unit to reach the second superheat degree.
Specifically, all indoor units of the multi-split air conditioner which are currently in an open state except the target indoor unit are defined as other indoor units, and in the process of controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree, the electronic expansion valves in the other indoor units can be controlled to adjust the opening degree according to the preset superheat degree.
In this embodiment, the condensation prevention effect of the preset wind sensing mode is firstly achieved by adjusting the frequency of the compressor (especially when the preset wind sensing mode is started in the indoor unit in a fully opened state), and then the condensation prevention problem is solved by adjusting the superheat degree of the target indoor unit, so that the reliability of the system operation is ensured.
And the frequency adjustment of the compressor can be reduced by adjusting the opening degree of the electronic expansion valve in the target indoor unit through the superheat degree, so that the influence of the frequency adjustment of the compressor on the refrigeration effect of other indoor units which are in an opening state and do not open the preset wind sensation mode is reduced, the requirement of low wind speed and wind sensation of the space where the target indoor unit is located is met, and the refrigeration effect of other spaces is maintained.
In addition, when the number of the indoor units in the on state in the multi-split air conditioner is one, and the indoor units are in the preset wind sensing mode, the output capacity of the multi-split air conditioner compressor is generally large, so that even if the compressor operates at the lowest frequency, the outlet air temperature of the target indoor unit is still low.
After step S10, when the operation of the multi-split air conditioner does not reach the first preset condition, step S30 may be performed to prevent condensation of the target indoor unit through superheat degree adjustment.
Further, in this embodiment, the second preset condition includes at least one of the following:
the condition 1 is that the duration of the preset wind sensation mode started by the target indoor unit is longer than a set duration; the set time length here is longer than the preset time length corresponding to the first preset condition in the above embodiment.
The condition 2 is that the current evaporation temperature of the target indoor unit is lower than the target evaporation temperature, or the current evaporation pressure of the target indoor unit is lower than the target evaporation pressure; the target evaporation temperature or the target evaporation pressure is determined according to the second ambient humidity;
the condition 3 is that the exhaust temperature of the compressor is lower than a preset exhaust temperature;
and under the condition 4, the exhaust superheat degree of the compressor is less than the preset exhaust superheat degree.
In an implementation manner of this embodiment, the second preset condition includes all the conditions listed above, that is, when the above conditions 1, 2, 3, and 4 are simultaneously satisfied while the electronic expansion valve in the target indoor unit is controlled with the preset superheat degree as a target, the electronic expansion valve is controlled to operate according to the target superheat degree; and when any one of the conditions 1, 2, 3 and 4 is not met, controlling the electronic expansion valve to adjust the opening degree according to the preset superheat degree.
In another implementation manner of this embodiment, the second preset condition may include the above listed partial conditions, that is, when the air conditioner operation meets the partial conditions in the above conditions 1, 2, 3, and 4 during the control of the electronic expansion valve in the target indoor unit with the preset superheat degree as a target, the operation of the electronic expansion valve is controlled according to the target superheat degree; and when the air conditioner does not meet any one of the conditions 1, 2, 3 and 4, controlling the electronic expansion valve to adjust the opening degree according to the preset superheat degree.
When the operation of the multi-split air conditioner reaches the conditions, the risk of condensation of the target indoor unit which is opened in the preset air sense mode can be considered to be high, and the target electronic expansion valve is controlled to operate through the target superheat degree in time to reduce the flow of the refrigerant in the target indoor unit, so that the outlet air temperature of the target indoor unit is increased in time to effectively prevent the target indoor unit from being condensed.
Further, in this embodiment, the target evaporation temperature or the target evaporation pressure may be determined according to a second ambient humidity of the target indoor unit; the target evaporation temperature or the target evaporation pressure tends to increase with an increase in the second ambient humidity. Rather, the target evaporation temperature or the target evaporation pressure tends to decrease as the second ambient humidity decreases. Therefore, the air outlet temperature of the indoor unit can be ensured not to be too low while the space temperature drop effect of the target indoor unit is met.
Further, in this embodiment, after step S30, the method further includes:
when the operation of the multi-split air conditioner reaches a third preset condition, returning to execute the step of controlling the target electronic expansion valve to adjust the opening degree according to the preset superheat degree;
the third preset condition includes at least one of:
the target indoor unit exits the preset wind sensation mode under the condition 5;
condition 6, a discharge temperature of the compressor is greater than or equal to a preset discharge temperature;
and 7, the discharge superheat degree of the compressor is greater than or equal to a preset discharge superheat degree.
The third preset condition is specifically a condition which is required to be achieved by the operation parameters of the air conditioner or the environmental parameters of the environment where the air conditioner is located when the preset target indoor unit does not have a condensation risk or the multi-split air conditioner has a reliability risk.
In the embodiment, in the process of controlling the target electronic expansion valve to operate through the target superheat degree to prevent the target indoor unit from generating the condensation problem, when the air conditioner operates to reach a second preset condition, the target electronic expansion valve is switched to operate through a smaller preset superheat degree, so that the opening degree of the target electronic expansion valve can be increased, the problem of reliability of a system caused by the fact that the target electronic expansion valve operates at a smaller opening degree for a long time is effectively solved, the effect of effectively considering the condensation prevention effect and the refrigeration effect when the multi-split air conditioner is started to have a no-wind-sensation function is ensured, and the reliable operation of the multi-split air conditioner is ensured.
In this embodiment, when the air conditioner satisfies any one of the conditions 5, 6, and 7, the control is switched to control the electronic expansion valve to adjust the opening degree at a preset superheat degree. In other embodiments, when the air conditioner meets any two or all of the conditions 5, 6 and 7, the opening degree is controlled by controlling the electronic expansion valve to be adjusted at a preset superheat degree.
When the target indoor unit exits the preset wind sensing mode, the target indoor unit is indicated to have no condensation risk any more, and the target indoor unit can be switched to a smaller target superheat degree to operate at the moment so as to ensure the refrigerating effect of the space where the target indoor unit is located. If the number of the target indoor units is more than one, if one part of the target indoor units exits the preset air induction mode and the other part of the target indoor units is still in the preset air induction mode, the opening degree of the electronic expansion valve in the indoor unit exiting the preset air induction mode is adjusted according to the preset superheat degree, and the opening degree of the electronic expansion valve in the indoor unit in the preset air induction mode is kept adjusted according to the target superheat degree.
The preset exhaust temperature and the preset exhaust superheat degree are critical parameters for distinguishing whether the compressor runs reliably or not. When the preset exhaust temperature or the preset exhaust superheat degree is too large, the preset superheat degree is switched to be smaller to control the electronic expansion valve to adjust the opening degree, so that the opening degree of the electronic expansion valve is increased, the exhaust temperature or the exhaust superheat degree is prevented from being too high, and the reliable operation of the multi-split air conditioner is guaranteed.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of a multi-split air conditioner is stored on the computer-readable storage medium, and when the control program of the multi-split air conditioner is executed by a processor, the relevant steps of any of the above control methods of the multi-split air conditioner are implemented.
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 a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a multi-connected air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.

Claims (13)

1. The control method of the multi-split air conditioner is characterized in that the multi-split air conditioner comprises a compressor and at least two indoor units, the compressor is connected with each indoor unit, and the control method of the multi-split air conditioner comprises the following steps:
when the multi-split air conditioner is in refrigerating operation, if an indoor unit of the at least two indoor units starts a preset wind sensation mode, controlling the compressor to operate according to a first evaporation parameter; the air outlet speed of the corresponding indoor unit in the preset wind sensing mode is smaller than the preset air speed;
when the operation of the multi-split air conditioner reaches a first preset condition, controlling the operation of the compressor according to a second evaporation parameter;
the first evaporation parameter and the second evaporation parameter are both characterization parameters of a target evaporation state required to be achieved by an indoor heat exchanger in the indoor unit, and the temperature of the indoor heat exchanger corresponding to the second evaporation parameter is greater than the temperature of the indoor heat exchanger corresponding to the first evaporation parameter.
2. The control method of a multi-split air conditioner as set forth in claim 1, wherein the step of controlling the operation of the compressors according to the second evaporation parameter is preceded by the steps of:
when the operation of the multi-split air conditioner reaches a first preset condition, acquiring a first environment humidity of a space where an indoor unit of the preset wind sensing mode is started;
determining the second evaporation parameter from the first ambient humidity.
3. The method of controlling a multi-split air conditioner as claimed in claim 2, wherein the step of acquiring the first ambient humidity of the space where the indoor unit of the preset air sense mode is turned on includes:
if the number of the target indoor units is more than one, acquiring the sub-environment humidity of the space where each indoor unit which starts the preset wind sensation mode is located;
determining the first ambient humidity from more than one of the sub-ambient humidities.
4. The control method of a multi-split air conditioner as set forth in claim 3, wherein the step of determining the first ambient humidity based on more than one sub-ambient humidity comprises:
determining the sub-ambient humidity with the largest value as the first ambient humidity from among more than one sub-ambient humidity.
5. The method for controlling a multi-split air conditioner as claimed in claim 1, further comprising, after the step of controlling the operation of the compressors according to the first evaporation parameter:
acquiring the number of target indoor units and the continuous operation time of the compressor after the preset wind sensation mode is started; the target indoor unit is one of the at least two indoor units, and the preset wind sensation mode is started;
when the number of the target indoor units is larger than or equal to the target number and the continuous operation time length is larger than or equal to the preset time length, determining that the multi-split air conditioner reaches the first preset condition;
and when the number of the target indoor units is smaller than the target number or the continuous operation duration is smaller than the preset duration, returning to the step of controlling the compressor to operate according to the first evaporation parameter.
6. The method for controlling a multi-split air conditioner as claimed in claim 5, wherein before the step of determining that the multi-split air conditioner has reached the preset condition when the number of target indoor units is greater than or equal to a target number and the duration of operation is greater than or equal to a preset duration, the method further comprises:
and acquiring the total number of the indoor units which are in the opening state currently in the at least two indoor units as the target number.
7. The control method of a multi-split air conditioner as claimed in claim 1, wherein the first evaporation parameter includes a first evaporation temperature, the second evaporation parameter includes a second evaporation temperature, and the first evaporation temperature is less than the second evaporation temperature;
or, the first evaporation parameter comprises a first evaporation pressure, the second evaporation parameter comprises a second evaporation pressure, and the first evaporation pressure is less than the second evaporation pressure.
8. The method for controlling a multi-split air conditioner as claimed in any one of claims 1 to 7, wherein the step of controlling the operation of the compressor according to the first evaporation parameter is performed in a process further comprising:
controlling a target electronic expansion valve to adjust the opening degree according to a preset superheat degree;
and defining a target indoor unit as one of the at least two indoor units, which is opened in the preset wind sensation mode, wherein the target electronic expansion valve is an electronic expansion valve in the target indoor unit.
9. The method for controlling a multi-split air conditioner as claimed in claim 8, further comprising, after the step of controlling the operation of the compressor according to the second evaporation parameter:
when the running of the multi-split air conditioner reaches a second preset condition, controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree;
the target superheat degree is determined according to the second ambient humidity of the space where the target indoor unit is located, and the target superheat degree is larger than or equal to the preset superheat degree.
10. The control method of a multi-split air conditioner as set forth in claim 9, wherein the second preset condition includes at least one of:
the duration of the target indoor unit starting the preset wind sensation mode is longer than a set duration;
the current evaporation temperature of the target indoor unit is less than the target evaporation temperature, or the current evaporation pressure of the target indoor unit is less than the target evaporation pressure; the target evaporation temperature or the target evaporation pressure is determined according to the second ambient humidity;
the exhaust temperature of the compressor is lower than the preset exhaust temperature;
and the exhaust superheat degree of the compressor is less than the preset exhaust superheat degree.
11. The method for controlling a multi-split air conditioner as claimed in claim 9, further comprising, after the step of controlling the target electronic expansion valve to adjust the opening degree according to the target superheat degree:
when the operation of the multi-split air conditioner reaches a third preset condition, returning to execute the step of controlling the target electronic expansion valve to adjust the opening degree according to the preset superheat degree;
the third preset condition includes at least one of:
the target indoor unit exits the preset wind sensation mode;
the exhaust temperature of the compressor is greater than or equal to a preset exhaust temperature;
and the exhaust superheat degree of the compressor is greater than or equal to a preset exhaust superheat degree.
12. A multi-split air conditioner, comprising:
at least two indoor units;
a compressor connected to each of the indoor units;
the controlling means, the indoor set with the compressor all with controlling means connects, controlling means includes: a memory, a processor, and a control program of a multi-split air conditioner stored on the memory and operable on the processor, the control program of the multi-split air conditioner implementing the steps of the control method of the multi-split air conditioner as set forth in any one of claims 1 to 11 when executed by the processor.
13. A computer-readable storage medium, wherein a control program of a multi-split air conditioner is stored thereon, and when executed by a processor, implements the steps of the control method of the multi-split air conditioner according to any one of claims 1 to 11.
CN202110920084.0A 2021-08-11 2021-08-11 Multi-split air conditioner, control method thereof and computer readable storage medium Pending CN115704597A (en)

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