CN116447708A - Air conditioner control method and device, multi-split air conditioner and storage medium - Google Patents

Air conditioner control method and device, multi-split air conditioner and storage medium Download PDF

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Publication number
CN116447708A
CN116447708A CN202310341481.1A CN202310341481A CN116447708A CN 116447708 A CN116447708 A CN 116447708A CN 202310341481 A CN202310341481 A CN 202310341481A CN 116447708 A CN116447708 A CN 116447708A
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CN
China
Prior art keywords
air conditioner
temperature
internal machine
target
temperature difference
Prior art date
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Pending
Application number
CN202310341481.1A
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Chinese (zh)
Inventor
周壮
邵艳坡
李健锋
杨亚新
刘帅帅
王军强
许永锋
邓建云
李东
廖振华
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GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Midea Group Wuhan HVAC Equipment Co Ltd
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Application filed by GD Midea Air Conditioning Equipment Co Ltd, Midea Group Wuhan HVAC Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202310341481.1A priority Critical patent/CN116447708A/en
Publication of CN116447708A publication Critical patent/CN116447708A/en
Pending legal-status Critical Current

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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/62—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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • 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
    • F24F11/77—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 by controlling the speed of ventilators
    • 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

Abstract

The present invention relates to the field of air conditioners, and in particular, to a method and an apparatus for controlling an air conditioner, a multi-split air conditioner, and a storage medium. According to the invention, the internal machine in the energy-saving mode is determined so as to facilitate the subsequent adjustment of the operation parameters of the internal machine, meanwhile, the operation parameters of the target internal machine can be accurately adjusted through the temperature difference between the region temperature of the region where the internal machine is positioned and the set target temperature so as to reduce the output cold quantity of the internal machine without changing the operation parameters of the external machine of the multi-split air conditioner, so that the technical problems of larger energy consumption and excessive output cold quantity of the multi-split air conditioner in the prior art are avoided, and the energy consumption of the air conditioner can be reduced.

Description

Air conditioner control method and device, multi-split air conditioner and storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method and an apparatus for controlling an air conditioner, a multi-split air conditioner, and a storage medium.
Background
In the refrigerating working process of the multi-split air conditioner, when the temperature of a certain room quickly reaches the temperature set by a user, too much cold energy input is not needed, but at the moment, if other room air conditioners still do not reach the set temperature, the frequency of the compressor of the external machine is higher, at the moment, the problems of overlarge cold energy input and larger energy consumption are caused, and the comfort of the user is affected.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, an air conditioner control device, a multi-split air conditioner and a storage medium, and aims to solve the technical problems that the multi-split air conditioner in the prior art is large in energy consumption and excessive in cold output.
In order to achieve the above object, the present invention provides an air conditioner control method, which is applied to a multi-split air conditioner, the multi-split air conditioner comprising: an external machine and a plurality of internal machines;
the method comprises the following steps:
when the air conditioner operates in a refrigerating mode, determining a target internal machine in an energy-saving mode;
acquiring the region temperature of the region where the target internal machine is located and the set target temperature;
calculating a temperature difference between the zone temperature and the set target temperature;
and adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
Optionally, the internal machine includes: an indoor heat exchanger and a throttling element;
the adjusting the operation parameters of the target internal machine according to the temperature difference value comprises the following steps:
acquiring the actual superheat degree and the set superheat degree of the indoor heat exchanger;
determining a difference interval in which the temperature difference is located, and determining a superheat correction value according to the difference interval;
correcting the set superheat degree according to the superheat degree correction value to obtain a target superheat degree;
determining a superheat degree difference value between the actual superheat degree and the target superheat degree;
and adjusting the opening degree of the throttling element according to the superheat difference value.
Optionally, the obtaining the actual superheat degree of the indoor heat exchanger includes:
acquiring the coil temperature and the outlet temperature of the indoor heat exchanger;
and determining the actual superheat according to the difference between the outlet temperature and the coil temperature.
Optionally, the difference interval is inversely related to the superheat correction value.
Optionally, the adjusting the operation parameter of the target internal machine according to the temperature difference value includes:
and increasing the starting temperature threshold of the target internal machine, and controlling the starting of the target internal machine when the temperature difference is larger than or equal to the starting temperature threshold or the duration of the temperature difference smaller than the starting temperature threshold is smaller than a preset duration.
Optionally, the adjusting the operation parameter of the target internal machine according to the temperature difference value includes:
and increasing the reaching Wen Tingji threshold of the target internal machine, and controlling the target internal machine to reach Wen Tingji when the duration time of the temperature difference value smaller than the starting temperature threshold is longer than a preset duration time or the temperature difference value smaller than the reaching temperature shutdown threshold, wherein the reaching Wen Tingji threshold is smaller than the starting temperature threshold.
Optionally, the internal machine further includes: a blower;
the adjusting the operation parameters of the target internal machine according to the temperature difference value comprises the following steps:
obtaining a conversion coefficient between the temperature difference value of the target internal machine and the rotating speed of the fan;
and increasing the conversion coefficient based on a preset conversion coefficient to reduce the rotating speed of the fan.
In addition, in order to achieve the above object, the present invention also provides an air conditioner control device, including:
the determining module is used for determining a target internal machine in an energy-saving mode when the air conditioner is in refrigeration operation;
the acquisition module is used for acquiring the region temperature of the region where the target internal machine is located and the set target temperature;
a calculation module for calculating a temperature difference between the region temperature and the set target temperature;
and the adjusting module is used for adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
In addition, in order to achieve the above purpose, the present invention further provides a multi-split air conditioner, which includes: the system comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program is configured to realize the steps of the air conditioner control method.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the steps of the air conditioner control method as described above.
The invention discloses an air conditioner control method, which is applied to a multi-split air conditioner, and the multi-split air conditioner comprises the following steps: an external machine and a plurality of internal machines; the air conditioner control method comprises the following steps: when the air conditioner operates in a refrigerating mode, determining a target internal machine in an energy-saving mode; acquiring the region temperature of the region where the target internal machine is located and the set target temperature; calculating a temperature difference between the zone temperature and the set target temperature; compared with the prior art, the method and the device have the advantages that the internal machine in the energy-saving mode is determined so as to facilitate the subsequent adjustment of the operation parameters of the internal machine, meanwhile, for accurate and effective adjustment, the operation parameters of the target internal machine can be accurately adjusted through the temperature difference between the area temperature of the area where the internal machine is located and the set target temperature, so that the output cold of the internal machine is reduced, the operation parameters of the external machine of the multi-split air conditioner are not required to be changed, the technical problems that the energy consumption of the multi-split air conditioner in the prior art is large and the excessive output cold exists are avoided, and the energy consumption of the air conditioner can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of a multi-split air conditioner in a hardware operation environment according to an embodiment of the present invention;
FIG. 2 is a flowchart of a first embodiment of an air conditioner control method according to the present invention;
FIG. 3 is a flowchart of a second embodiment of an air conditioner control method according to the present invention;
FIG. 4 is a flowchart of a third embodiment of an air conditioner control method according to the present invention;
FIG. 5 is a flowchart of a fourth embodiment of an air conditioner control method according to the present invention;
FIG. 6 is a schematic diagram of temperature difference versus fan speed for different modes of an embodiment of an air conditioner control method according to the present invention;
FIG. 7 is a diagram showing temperature difference versus fan speed for different modes of an embodiment of an air conditioner control method according to the present invention;
fig. 8 is a block diagram showing the structure of a first embodiment of the air conditioner control device 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a multi-split air conditioner in a hardware operation environment according to an embodiment of the present invention.
As shown in fig. 1, the multi-split air conditioner may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 is not limiting of a multi-split air conditioner 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. 1, an operating system, a network communication module, a user interface module, and an air conditioner control program may be included in the memory 1005 as one type of storage medium.
In the multi-split air conditioner shown in fig. 1, the network interface 1004 is mainly used for performing data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the multi-split air conditioner of the present invention may be disposed in the multi-split air conditioner, and the multi-split air conditioner invokes the air conditioner control program stored in the memory 1005 through the processor 1001, and executes the air conditioner control method provided by the embodiment of the present invention.
An embodiment of the present invention provides a control method for an air conditioner, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of a control method for an air conditioner according to the present invention.
In this embodiment, the air conditioner control method includes the following steps:
step S10: and when the air conditioner is in refrigeration operation, determining the target internal machine in the energy-saving mode.
It should be noted that, the air conditioner in this embodiment refers to a multi-split air conditioner, where one external machine is connected to multiple internal machines, and the multi-split air conditioner can implement the functions of adjusting parameters such as air temperature, humidity, cleanliness, air flow rate and the like of multiple rooms at the same time, including but not limited to modes such as refrigeration, heating, and fresh air circulation.
It should be noted that, when the multi-split air conditioner is operated in the cooling mode, if the temperature of a room of a certain indoor unit is about to reach the temperature set by the user, the cooling input of the room needs to be properly reduced, but at this time, the cooling input of other rooms may have a larger cooling demand, and at this time, the cooling input of the room may be reduced by independently adjusting the indoor unit operation parameters of the room, for example: the mode of reducing the rotation speed of the fan of the internal machine or the opening degree of the expansion valve is not particularly limited in this embodiment.
In this embodiment, the energy saving mode is also referred to as ECO (Ecology Conservation Optimization) mode, and is mainly applied to a scene with low cooling demand, for example: the temperature difference between the sleeping or indoor environment and the outdoor environment is smaller, and the embodiment is not particularly limited.
The energy-saving mode of the internal machine can be controlled by a user to start the energy-saving mode of the internal machine in each room through a remote controller, a wire controller, a button, a mobile phone APP and the like, each energy-saving mode of the internal machine can independently operate, and after the internal machine starts the energy-saving mode, a starting instruction of energy-saving control is sent to the external machine so that the internal machine can adaptively adjust the operation parameters of the external machine, and therefore the cold energy input of a corresponding area or a corresponding room is adjusted.
Step S20: and acquiring the region temperature of the region where the target internal machine is located and the set target temperature.
Step S30: a temperature difference between the zone temperature and the set target temperature is calculated.
It should be understood that, the collection of the area temperature may be collected by a temperature sensor or a temperature sensing bulb of the area where the internal machine is located, the set target temperature is set by the user, and the difference between the two is a certain value, which may represent the running state of the air conditioner in a following period of time, for example: if the difference between the area temperature and the set target temperature is too large and the set target temperature is far smaller than the area temperature, the area where the internal machine is located is indicated to need more cold energy input; if the difference between the regional temperature and the set target temperature is similar, the regional cooling capacity requirement of the internal machine is smaller or Wen Tingji is about to be reached.
In this embodiment, the temperature difference between the temperature of the area and the set target temperature can better reflect the cooling capacity requirement of the area where the indoor unit of the air conditioner is located, so that the embodiment can also realize the adjustment of the operation parameters according to the temperature interval where the temperature difference is located when the operation parameters of the indoor unit are adjusted in the subsequent period.
Step S40: and adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
It can be understood that the operation parameters of the target internal machine in this embodiment include, but are not limited to, an internal machine starting temperature threshold, a reaching Wen Tingji threshold, a fresh air fan rotating speed, and an opening degree of a throttling element in the internal machine, where, under the premise of cooling the multi-split air conditioner, the reaching Wen Tingji threshold and the starting temperature threshold of the internal machine are adjusted so that the temperature of the whole room is kept in a higher interval, thereby reducing the cooling capacity requirement of the room; the air quantity of cold air conveyed into the room can be reduced by adjusting the rotating speed of the fresh air fan, so that the input of indoor cold energy is reduced; the opening degree of the throttling element can reduce the heat exchange rate of the indoor heat exchanger of the inner machine by reducing the heat exchange rate of the refrigerant, so that the indoor cold input is reduced.
In addition, in this embodiment, the inner machine wind shield may be reduced, or the same or similar cooling capacity input may be reduced, which is not limited in this embodiment.
The embodiment discloses an air conditioner control method, which is applied to a multi-split air conditioner, and the multi-split air conditioner comprises: an external machine and a plurality of internal machines; the air conditioner control method comprises the following steps: when the air conditioner operates in a refrigerating mode, determining a target internal machine in an energy-saving mode; acquiring the region temperature of the region where the target internal machine is located and the set target temperature; calculating a temperature difference between the zone temperature and the set target temperature; according to the temperature difference value, the operation parameters of the target internal machine are adjusted so as to reduce the output cold quantity of the internal machine, the internal machine in the energy-saving mode is determined, so that the subsequent adjustment of the operation parameters of the internal machine is facilitated, meanwhile, for accurate and effective adjustment, the operation parameters of the target internal machine are accurately adjusted through the temperature difference value between the area temperature of the area where the internal machine is located and the set target temperature, so that the output cold quantity of the internal machine is reduced, the operation parameters of the external machine of the multi-split air conditioner are not required to be changed, the technical problems that the energy consumption of the multi-split air conditioner in the prior art is large and the excessive output cold quantity exists are avoided, and the energy consumption of the air conditioner can be reduced.
Referring to fig. 3, fig. 3 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S40: comprising the following steps:
step S401: and acquiring the actual superheat degree and the set superheat degree of the indoor heat exchanger.
The superheat degree refers to the difference between the outlet temperature and the middle temperature of the indoor heat exchanger, after the compressor of the outer machine completes the compression process, high-temperature and high-pressure refrigerant vapor is obtained and discharged to the outdoor heat exchanger of the outer machine, heat in the outdoor heat exchanger of the outer machine is absorbed by the air outside and exchanges heat with the air to complete the heat release process, namely, the heat in the high-pressure vapor is released, the condensed high-temperature and high-pressure vapor is gradually condensed into high-pressure liquid, thereby completing the condensation process, and then the indoor heat exchanger of the inner machine is used for evaporating, thereby absorbing the heat in the area of the inner machine to complete the evaporation process, and the refrigerant in the pipeline is subjected to heat exchange with the outside due to the influence of the pipeline material, so that the difference exists between the middle temperature and the outlet temperature of the indoor heat exchanger of the evaporator.
It is worth to say that the higher the actual superheat degree is, the larger the opening degree of the throttling element will be, and the specific opening degree range and opening degree adjusting direction of the throttling element depend on the difference value between the actual superheat degree and the target superheat degree set by the multi-split air conditioner.
Further, in order to obtain the actual superheat degree of the indoor heat exchanger, the method specifically includes:
acquiring the coil temperature and the outlet temperature of the indoor heat exchanger;
and determining the actual superheat according to the difference between the outlet temperature and the coil temperature.
The coil temperature and the outlet temperature can be obtained through a temperature sensing bulb arranged at the outlet and outlet of a coil of the indoor heat exchanger and are sent to a controller of the multi-on-line air conditioner for data processing, wherein the actual superheat degree is calculated by a formula of Tsh=T2b-T2, T2b is the outlet temperature of the evaporator, T2 is the middle temperature of the evaporator, and Tsh is the actual superheat degree.
Step S402: and determining a difference interval in which the temperature difference is located, and determining a superheat correction value according to the difference interval.
It should be noted that, in the embodiment, when the superheat degree is corrected, the temperature difference values in different ranges are divided into different sections, the sections do not overlap, the different difference sections correspond to different superheat degree correction values, and the difference sections are inversely related to the superheat degree correction values, that is, the larger the temperature difference value is, the smaller the superheat degree correction value is.
For example: the temperature difference value is more than 3, and the target superheat degree is corrected to SH_eco1; 3. the temperature difference value is more than or equal to 2, and the target superheat degree is corrected to SH_eco2; 2. the temperature difference value is more than or equal to 1, and the target superheat degree is corrected to SH_eco3; 1. the temperature difference value is more than or equal to 0, and the target superheat degree is corrected to SH_eco4; the temperature difference is less than 0, the target superheat is corrected sh_eco5, where parameter sh_eco 1=0, parameter sh_eco 2=1, parameter sh_eco 3=2, parameter sh_eco 4=3, sh_eco 5=3, and of course, the superheat correction value can be flexibly adjusted, which is not particularly limited in this embodiment.
Step S403: and correcting the set superheat degree according to the superheat degree correction value to obtain a target superheat degree.
It should be understood that, under the ECO function, the target superheat degree of the internal machine will increase by the correction value, and the corrected target superheat degree will become larger, so that the actual superheat degree is relatively smaller, the opening of the electronic expansion valve will be reduced, and the flow rate of the refrigerant is reduced, so as to reduce the output of cold energy, reduce energy waste, and avoid frequent reaching Wen Tingji.
In the specific implementation, if the superheat degree is set to be 5 and the temperature difference is more than 3, the corresponding superheat degree correction value is 0 and the target superheat degree is also 5; if the superheat degree is set to be 5, and the temperature difference value of 2 is more than or equal to 1, the corresponding superheat degree correction value is 2, and the target superheat degree is also 7.
Step S404: and determining a superheat difference value between the actual superheat and the target superheat.
Step S405: and adjusting the opening degree of the throttling element according to the superheat difference value.
It should be understood that, since the superheat correction value is not negative in the present embodiment, the opening degree of the throttling element is generally reduced or maintained, and the degree of the reduction is still the magnitude of the actual superheat, so the present embodiment may also perform the numerical correction on the actual superheat transmitted to the controller, that is, the actual superheat transmitted to the multi-split air conditioner is originally 3, but after the controller performs the correction, the controller corrects it to 2, and adjusts the opening degree of the throttling element.
According to the embodiment, the superheat degree correction value is determined according to the difference value between the regional temperature and the set target temperature, and the set superheat degree is corrected through the superheat degree correction value, so that the difference value between the actual superheat degree and the target superheat degree can be used for adjusting the opening of the throttling element, and the cold energy input is reduced.
Referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of an air conditioner control method according to the present invention.
Based on the above-described second embodiment, in the present embodiment, the step S40: further comprises:
step S401': and increasing the starting temperature threshold of the target internal machine, and controlling the starting of the target internal machine when the temperature difference is larger than or equal to the starting temperature threshold or the duration of the temperature difference smaller than the starting temperature threshold is smaller than a preset duration.
It should be noted that, when the multi-split air conditioner is started normally or restarted after warm-up shutdown, if the starting temperature threshold of the internal machine is increased, the cooling capacity required for warm-up restarting in the area is reduced, that is, the set target temperature of the room is increased, so that the time and magnitude of cooling capacity input can be relatively reduced, and excessive cooling capacity input is avoided, and frequent reaching Wen Tingji is avoided.
In a specific implementation, if the starting condition of the internal machine is T1-Tsc is more than or equal to c1 or T1-Tsc is less than c1 for less than 3 minutes in a conventional refrigeration mode, after the energy-saving function of the internal machine is started, the starting condition is T1-Tsc is more than or equal to c2 or T1-Tsc is less than c2 for less than 3 minutes, wherein c1 is less than c2, at this time, the starting temperature of a room is found to rise, less cold energy is needed to meet the requirements of users, and excessive cold energy input is avoided.
It is understood that the preset duration may be set to 3min, and the start-up temperature threshold may be set to 2 degrees celsius, which is not particularly limited in this embodiment.
Further, the adjusting the operation parameter of the target internal machine according to the temperature difference value further includes:
and increasing the reaching Wen Tingji threshold of the target internal machine, and controlling the target internal machine to reach Wen Tingji when the duration time of the temperature difference value smaller than the starting threshold is longer than a preset duration time or the temperature difference value smaller than the reaching temperature shutdown threshold, wherein the reaching Wen Tingji threshold is smaller than the starting threshold.
It should be noted that, if the indoor temperature required for the air conditioner to reach the temperature and stop is lower than the set temperature of the air conditioner, if the indoor temperature is increased to reach the Wen Tingji threshold value, the cooling capacity required for the air conditioner to reach the temperature and stop is reduced, so that excessive cooling capacity input is avoided, and frequent reaching Wen Tingji is caused.
In a specific implementation, the internal machine temperature reaching stop condition is T1-Tsc < c1 for 3 minutes or T1-Tsc < d1, and after the internal machine is started with the energy saving function, the internal machine temperature reaching stop condition is T1-Tsc < c2 for 3 minutes or T1-Tsc < d2, wherein d1 < c1, d2 < c2 and d1 < d2, and at the moment, the temperature reaching Wen Tingji of a room is found to rise, less cold energy is needed to meet the requirements of users, and excessive cold energy input is avoided.
It can be understood that whether the target internal unit reaches Wen Tingji threshold or the starting temperature threshold of the target internal unit is increased, the target temperature of the area where the internal unit is located is controlled to be within a temperature interval higher than that of the conventional refrigeration mode, so that the cold energy input requirement of the area is reduced, and the problem of excessive cold energy output of the multi-split air conditioner is avoided.
According to the embodiment, the target temperature of the area where the internal machine is located is controlled in a temperature interval higher than that of a conventional refrigeration mode by carrying out numerical adjustment on the reaching Wen Tingji threshold and the starting temperature threshold of the target internal machine, so that the cold energy input requirement of the area is reduced.
Referring to fig. 5, fig. 5 is a flowchart illustrating a fourth embodiment of an air conditioner control method according to the present invention.
Based on the above-described third embodiment, in the present embodiment, the step S40: further comprises:
step S401″: and obtaining a conversion coefficient between the temperature difference value of the target internal machine and the rotating speed of the fan.
It should be noted that, in the conventional refrigeration state, the fan rotation speed of the multi-split air conditioner indoor unit is in a linear relationship with the interval where the temperature difference between the regional temperature and the set target temperature is located, in general, the larger the interval where the temperature difference is located is, the larger the fan rotation speed is, in order to accurately reduce the fan rotation speed, further reduce the indoor cold input, the conversion coefficient between the temperature difference of the target indoor unit and the fan rotation speed can be obtained through the experiment or the setting before the air conditioner leaves the factory, and further under the same temperature difference, the lower fan rotation speed is obtained through increasing the conversion coefficient.
In specific implementation, referring to fig. 6, the left side of fig. 6 is the corresponding relation between the temperature difference value and the fan rotation speed in the normal refrigeration mode, and the right side of fig. 6 is the corresponding relation between the temperature difference value and the fan rotation speed in the energy-saving mode, wherein a is less than b, and the purpose is to avoid that the fan rotation speed can be reduced when the temperature of T1 is very low. Therefore, the rotating speed of the fan can be reduced to be lower at an early stage, the wind speed is low, the output cold quantity is small, the stable small cold quantity output is easy to maintain, and the influence on comfort caused by temperature-reaching shutdown due to excessive output of the cold quantity is avoided.
Referring to fig. 7, taking a=0 and b=1 as an example, in the case of normal cooling, the difference between the room temperature and the set temperature, that is, 20% wind is operated when T1-TSC < -1, and 1% wind is operated when T1-TSC < -1.5; when the energy-saving function is realized, 20% of wind is operated when the T1-TSC is less than 0, 1% of wind is operated when the T1-TSC is less than-0.5, namely, the room temperature does not need to be reduced to be very low, the lower windshield can be operated, so that the rotating speed of the fan can be reduced to be lower in an early point until the minimum rotating speed is allowed to be operated, the wind speed is low, and the stable small cold output is easy to keep.
Step S402': and increasing the conversion coefficient based on a preset conversion coefficient to reduce the rotating speed of the fan.
In a specific implementation, the preset conversion coefficient may be selected according to a corresponding relationship between the rotation speed and the temperature difference of the fan, for example: in fig. 7, the different fan speeds are separated by 0.5 degrees celsius, and the preset conversion coefficient may be set to be a multiple of 0.5, which is not particularly limited in this embodiment.
In the embodiment, the conversion coefficient between the fan rotating speed and the temperature difference between the regional temperature and the set target temperature is adjusted, so that the air conditioner has lower fan rotating speed at the same temperature, or the same fan rotating speed is obtained at a higher temperature, and the indoor cold energy input is reduced.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium stores an air conditioner control program, and the air conditioner control program realizes the steps of the air conditioner control method when being executed by a processor.
Because the storage medium adopts all the technical schemes of all the embodiments, the storage medium has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
Referring to fig. 8, fig. 8 is a block diagram showing the structure of a first embodiment of the air conditioner control device according to the present invention.
As shown in fig. 8, an air conditioner control device according to an embodiment of the present invention includes:
the determining module 10 is configured to determine, when the air conditioner is in a cooling operation, a target internal machine in an energy saving mode.
And the obtaining module 20 is configured to obtain the region temperature of the region where the target internal machine is located and the set target temperature.
A calculation module 30 for calculating a temperature difference between the region temperature and the set target temperature.
And the adjusting module 40 is used for adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
In an embodiment, the adjusting module 40 is further configured to obtain an actual superheat degree and a set superheat degree of the indoor heat exchanger;
determining a difference interval in which the temperature difference is located, and determining a superheat correction value according to the difference interval; correcting the set superheat degree according to the superheat degree correction value to obtain a target superheat degree; determining a superheat degree difference value between the actual superheat degree and the target superheat degree; and adjusting the opening degree of the throttling element according to the superheat difference value.
In one embodiment, the conditioning module 40 is further configured to obtain a coil temperature and an outlet temperature of the indoor heat exchanger; and determining the actual superheat according to the difference between the outlet temperature and the coil temperature.
In one embodiment, the adjusting module 40 is further configured to negatively correlate the difference interval with the superheat correction value.
In an embodiment, the adjusting module 40 is further configured to increase a start-up temperature threshold of the target internal machine, and control the start-up of the target internal machine when the temperature difference is greater than or equal to the start-up temperature threshold, or when a duration of the temperature difference being less than the start-up temperature threshold is less than a preset duration.
In an embodiment, the adjusting module 40 is further configured to increase the reaching Wen Tingji threshold of the target internal machine, and control the target internal machine to reach Wen Tingji when the duration of the temperature difference being smaller than the starting temperature threshold is greater than a preset duration or the temperature difference being smaller than the reaching shutdown threshold, and the reaching Wen Tingji threshold is smaller than the starting temperature threshold.
In an embodiment, the adjusting module 40 is further configured to obtain a conversion coefficient between the temperature difference value of the target internal machine and the rotation speed of the fan; and increasing the conversion coefficient based on a preset conversion coefficient to reduce the rotating speed of the fan.
The embodiment discloses an air conditioner control method, which is applied to a multi-split air conditioner, and the multi-split air conditioner comprises: an external machine and a plurality of internal machines; the air conditioner control method comprises the following steps: when the air conditioner operates in a refrigerating mode, determining a target internal machine in an energy-saving mode; acquiring the region temperature of the region where the target internal machine is located and the set target temperature; calculating a temperature difference between the zone temperature and the set target temperature; according to the temperature difference value, the operation parameters of the target internal machine are adjusted so as to reduce the output cold quantity of the internal machine, the internal machine in the energy-saving mode is determined, so that the subsequent adjustment of the operation parameters of the internal machine is facilitated, meanwhile, for accurate and effective adjustment, the operation parameters of the target internal machine are accurately adjusted through the temperature difference value between the area temperature of the area where the internal machine is located and the set target temperature, so that the output cold quantity of the internal machine is reduced, the operation parameters of the external machine of the multi-split air conditioner are not required to be changed, the technical problems that the energy consumption of the multi-split air conditioner in the prior art is large and the excessive output cold quantity exists are avoided, and the energy consumption of the air conditioner can be reduced.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in the present embodiment may refer to the air conditioner control method provided in any embodiment of the present invention, and are not described herein again.
Furthermore, 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 (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, 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 (10)

1. The air conditioner control method is characterized in that the air conditioner control method is applied to a multi-split air conditioner, and the multi-split air conditioner comprises the following steps: an external machine and a plurality of internal machines;
the air conditioner control method comprises the following steps:
when the air conditioner operates in a refrigerating mode, determining a target internal machine in an energy-saving mode;
acquiring the region temperature of the region where the target internal machine is located and the set target temperature;
calculating a temperature difference between the zone temperature and the set target temperature;
and adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
2. The air conditioner control method as set forth in claim 1, wherein said internal unit includes: an indoor heat exchanger and a throttling element;
the adjusting the operation parameters of the target internal machine according to the temperature difference value comprises the following steps:
acquiring the actual superheat degree and the set superheat degree of the indoor heat exchanger;
determining a difference interval in which the temperature difference is located, and determining a superheat correction value according to the difference interval;
correcting the set superheat degree according to the superheat degree correction value to obtain a target superheat degree;
determining a superheat degree difference value between the actual superheat degree and the target superheat degree;
and adjusting the opening degree of the throttling element according to the superheat difference value.
3. The method of controlling an air conditioner as set forth in claim 2, wherein said obtaining an actual superheat of said indoor heat exchanger includes:
acquiring the coil temperature and the outlet temperature of the indoor heat exchanger;
and determining the actual superheat according to the difference between the outlet temperature and the coil temperature.
4. The air conditioner control method as set forth in claim 2, wherein the difference interval is inversely related to the superheat correction value.
5. The air conditioner control method as set forth in claim 1, wherein said adjusting the operation parameters of the target internal machine according to the temperature difference value includes:
and increasing the starting temperature threshold of the target internal machine, and controlling the starting of the target internal machine when the temperature difference is larger than or equal to the starting temperature threshold or the duration of the temperature difference smaller than the starting temperature threshold is smaller than a preset duration.
6. The air conditioner control method as set forth in claim 1, wherein said adjusting the operation parameters of the target internal machine according to the temperature difference value includes:
and increasing the reaching Wen Tingji threshold of the target internal machine, and controlling the target internal machine to reach Wen Tingji when the duration time of the temperature difference value smaller than the starting temperature threshold is longer than a preset duration time or the temperature difference value smaller than the reaching temperature shutdown threshold, wherein the reaching Wen Tingji threshold is smaller than the starting temperature threshold.
7. The air conditioner control method as set forth in claim 1, wherein said internal unit further includes: a blower;
the adjusting the operation parameters of the target internal machine according to the temperature difference value comprises the following steps:
obtaining a conversion coefficient between the temperature difference value of the target internal machine and the rotating speed of the fan;
and increasing the conversion coefficient based on a preset conversion coefficient to reduce the rotating speed of the fan.
8. An air conditioner control device, characterized by comprising:
the determining module is used for determining a target internal machine in an energy-saving mode when the air conditioner is in refrigeration operation;
the acquisition module is used for acquiring the region temperature of the region where the target internal machine is located and the set target temperature;
a calculation module for calculating a temperature difference between the region temperature and the set target temperature;
and the adjusting module is used for adjusting the operation parameters of the target internal machine according to the temperature difference value so as to reduce the output cold quantity of the internal machine.
9. The utility model provides a many online air conditioner which characterized in that, many online air conditioner includes: a memory, a processor, and an air conditioner control program stored on the memory and operable on the processor, the air conditioner control program configured to implement the air conditioner control method of any one of claims 1 to 7.
10. A storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the air conditioner control method according to any one of claims 1 to 7.
CN202310341481.1A 2023-03-31 2023-03-31 Air conditioner control method and device, multi-split air conditioner and storage medium Pending CN116447708A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310341481.1A CN116447708A (en) 2023-03-31 2023-03-31 Air conditioner control method and device, multi-split air conditioner and storage medium

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CN116447708A true CN116447708A (en) 2023-07-18

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