CN117308265A - Method and device for controlling air conditioner, air conditioner and computer readable storage medium - Google Patents
Method and device for controlling air conditioner, air conditioner and computer readable storage medium Download PDFInfo
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- CN117308265A CN117308265A CN202311225792.8A CN202311225792A CN117308265A CN 117308265 A CN117308265 A CN 117308265A CN 202311225792 A CN202311225792 A CN 202311225792A CN 117308265 A CN117308265 A CN 117308265A
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000003860 storage Methods 0.000 title claims abstract description 16
- 230000001965 increasing effect Effects 0.000 claims abstract description 18
- 238000012937 correction Methods 0.000 claims description 25
- 238000009826 distribution Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 abstract description 24
- 238000004378 air conditioning Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 19
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioners, and discloses a method for controlling an air conditioner, which comprises the following steps: when part of indoor units are operated and a new indoor unit is started, the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started is increased, and the controllable total opening is obtained. And uniformly distributing the controllable total opening to the electronic expansion valves of all the running indoor units, and regulating the opening of the electronic expansion valves of all the running indoor units to the distributed opening. And after the set time is operated, the opening degrees of the electronic expansion valves of all the operated indoor units are adjusted to enable the superheat degree to be in a set range. The total electronic expansion valve opening of the indoor units of the multi-split air conditioning system is increased in controllable range based on the sum of the original opening, the opening of the electronic expansion valves is comprehensively distributed, the multi-split air conditioner is in a stable state when a new indoor unit is started, and the probability of liquid return is reduced. The application also discloses a device for controlling the air conditioner, the air conditioner and a computer readable storage medium.
Description
Technical Field
The present application relates to the field of air conditioning technology, for example, to a method and apparatus for controlling an air conditioner, and a computer readable storage medium.
Background
At present, a multi-split air conditioner comprises a plurality of indoor units and an outdoor unit, and the initial opening of an indoor unit electronic expansion valve of the multi-split air conditioner is selected to be larger under a refrigeration working condition, so that the liquid return risk exists; if the initial opening is smaller, the electronic expansion valve is easy to close, the circulating refrigerant quantity is small, and the low pressure is too low, and the exhaust pressure is too high.
The related art discloses a control method of a multi-split electronic expansion valve, which comprises the following steps: starting a refrigerating mode of the air conditioner, wherein an internal machine electronic expansion valve is in an initialization stage; detecting the exhaust superheat degree Td and/or the suction superheat degree Ts; judging whether the exhaust superheat degree Td and/or the suction superheat degree Ts meet the initial opening adjusting condition of the electronic expansion valve or not; and if the initial opening adjusting condition of the electronic expansion valve is met, adjusting the initialization step number A of the electronic expansion valve. The problems that the initialization opening of the electronic expansion valve of the multi-split air conditioner cannot be adjusted, liquid return is caused by the fact that the initialization opening is too large, the electronic expansion valve is easy to close due to the fact that the electronic expansion valve is too small, the circulating refrigerant quantity is small, low pressure is caused, and the exhaust pressure is too high are solved.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the initial opening degree of the electronic expansion valve of the indoor unit in the operation process is reduced by adopting the related technology, and although the problem of liquid return of the compressor is relieved to a certain extent, in practical application, the starting number of the indoor units of the multi-split air conditioner is often suddenly increased, the multi-split air conditioner system can be in an unstable state for a long time by adopting the related technology to control the indoor units after the indoor units are started, and at the moment, the refrigerant cannot be completely evaporated through the newly started indoor units, so that the liquid return of the compressor is serious.
It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for controlling an air conditioner, the air conditioner and a computer readable storage medium, so that when the number of indoor units is suddenly increased, the opening of a total electronic expansion valve of the indoor units of a multi-split air conditioner system is increased in a controllable range on the basis of the sum of the original opening, the opening of the electronic expansion valve is comprehensively distributed, the multi-split air conditioner is in a stable state when a new indoor unit is started, and the probability of liquid return of a compressor is reduced.
In some embodiments, the air conditioner includes a plurality of indoor units and electronic expansion valves provided corresponding to the plurality of indoor units; the method comprises the following steps: when a part of indoor units are operated and a new indoor unit is started, increasing the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started to obtain a controllable total opening; the controllable total opening degree is evenly distributed to the electronic expansion valves of all the running indoor units, and the opening degree of the electronic expansion valves of all the running indoor units is adjusted to the distributed opening degree; and after the set time is operated, the opening degrees of the electronic expansion valves of all the operated indoor units are adjusted to enable the superheat degree to be in a set range.
Optionally, increasing the total opening of the electronic expansion valve of the indoor unit that has been operated before the new indoor unit is opened to obtain a controllable total opening includes: acquiring the total opening of an electronic expansion valve of the indoor unit which is operated before the new indoor unit is started; determining a forward correction coefficient according to the number of the new indoor units; and correcting the total opening according to the forward correction coefficient to obtain the controllable total opening.
Optionally, the determining the forward correction coefficient according to the number of new indoor units turned on includes: and determining a forward correction coefficient corresponding to the number of the new indoor units started according to the first relation.
Optionally, the distributing the controllable total opening to the electronic expansion valves of all the running indoor units on average, and adjusting the opening of the electronic expansion valves of all the running indoor units to the distributed opening, includes: calculating k0=k1×a0/(m+l); adjusting the opening degrees of the electronic expansion valves of all the running indoor units to the allocated opening degrees; wherein, K0 is the opening degree after distribution, K1 is the total opening degree of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, a0 is the positive correction coefficient, m the number of the indoor units operated before the new indoor unit is started, and L is the number of the indoor units which are started newly.
Optionally, the adjusting the opening degrees of the electronic expansion valves of all the running indoor units to make the superheat degree be in a set range includes:
determining a target superheat range according to the operation duration; when the superheat degree of the running indoor unit is larger than the maximum value of the target superheat degree range, increasing the opening degree of the electronic expansion valve; and when the superheat degree of the running indoor unit is smaller than the minimum value of the target superheat degree range, reducing the opening degree of the electronic expansion valve.
Optionally, the determining the target superheat range according to the operation duration includes: and determining a target superheat range corresponding to the operation duration according to the second relation.
In some embodiments, the apparatus comprises: the air conditioner control device comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for controlling the air conditioner when executing the program instructions.
In some embodiments, the air conditioner includes:
in some embodiments, the computer readable storage medium stores program instructions that, when executed, perform the method for controlling an air conditioner described above.
The method and device for controlling the air conditioner, the air conditioner and the computer readable storage medium provided by the embodiment of the disclosure can realize the following technical effects:
when part of indoor units are operated and a new indoor unit is started, the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started is increased, and the controllable total opening is obtained. And uniformly distributing the controllable total opening to the electronic expansion valves of all the running indoor units, and regulating the opening of the electronic expansion valves of all the running indoor units to the distributed opening. And after the set time is operated, the opening degrees of the electronic expansion valves of all the operated indoor units are adjusted to enable the superheat degree to be in a set range. When a new indoor unit is started, the total electronic expansion valve opening of the indoor units of the multi-split air conditioning system is increased in a controllable range based on the sum of the original opening, and the opening of the electronic expansion valve is comprehensively distributed, so that the multi-split air conditioner is in a stable state when the new indoor unit is started, and the probability of liquid return of a compressor is reduced.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic diagram of a method for controlling an air conditioner provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for controlling an air conditioner provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another method for controlling an air conditioner provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for controlling an air conditioner provided by an embodiment of the present disclosure;
FIG. 5 is a schematic view of an apparatus for controlling an air conditioner provided in an embodiment of the present disclosure;
fig. 6 is a schematic view of an air conditioner provided in an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the disclosed embodiment, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, or can be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.
At present, a multi-split air conditioner comprises a plurality of indoor units and an outdoor unit, and the initial opening of an indoor unit electronic expansion valve of the multi-split air conditioner is selected to be larger under a refrigeration working condition, so that the liquid return risk exists; if the initial opening is smaller, the electronic expansion valve is easy to close, the circulating refrigerant quantity is small, and the low pressure is too low, and the exhaust pressure is too high. The related art discloses a control method of a multi-split electronic expansion valve, which comprises the following steps: starting a refrigerating mode of the air conditioner, wherein an internal machine electronic expansion valve is in an initialization stage; detecting the exhaust superheat degree Td and/or the suction superheat degree Ts; judging whether the exhaust superheat degree Td and/or the suction superheat degree Ts meet the initial opening adjusting condition of the electronic expansion valve or not; and if the initial opening adjusting condition of the electronic expansion valve is met, adjusting the initialization step number A of the electronic expansion valve. The problems that the initialization opening of the electronic expansion valve of the multi-split air conditioner cannot be adjusted, liquid return is caused by the fact that the initialization opening is too large, the electronic expansion valve is easy to close due to the fact that the electronic expansion valve is too small, the circulating refrigerant quantity is small, low pressure is caused, and the exhaust pressure is too high are solved. The initial opening degree of the electronic expansion valve of the indoor unit in the operation process is reduced by adopting the related technology, and although the problem of liquid return of the compressor is relieved to a certain extent, in practical application, the starting number of the indoor units of the multi-split air conditioner is often suddenly increased, the multi-split air conditioner system can be in an unstable state for a long time by adopting the related technology to control the indoor units after the indoor units are started, and at the moment, the refrigerant cannot be completely evaporated through the newly started indoor units, so that the liquid return of the compressor is serious.
The embodiment of the disclosure discloses an air conditioner, which comprises a processor, a plurality of indoor units and electronic expansion valves which are arranged corresponding to the indoor units. The electronic expansion valve is arranged at the liquid inlet of the evaporator and used for controlling the flow of the refrigerant in the evaporator of each indoor unit. The liquid pipe sensor is arranged on a liquid pipe line of the evaporator behind the electronic expansion valve and used for detecting the temperature of a liquid pipe of the indoor unit. The air pipe sensor is arranged on an air pipe pipeline of the evaporator and used for detecting the air pipe temperature of the evaporator. The processor is electrically connected with the electric components and is used for controlling the electric components to operate.
Based on the above-mentioned structure of the air conditioner, as shown in fig. 1, an embodiment of the disclosure provides a method for controlling the air conditioner, including:
and S01, when part of indoor units are operated and a new indoor unit is started, the processor increases the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, and the controllable total opening is obtained.
And S02, the processor evenly distributes the controllable total opening to the electronic expansion valves of all the operated indoor units, and adjusts the opening of the electronic expansion valves of all the operated indoor units to the distributed opening.
And S03, after the set time is operated, the processor adjusts the opening degrees of the electronic expansion valves of all the operated indoor units to enable the superheat degree to be in a set range.
The electronic expansion valves of all the running indoor units can be distributed according to other set modes besides the average distribution of the controllable opening degree. For example, a weighted average method, a harmonic average method, a history average method, or a moving average method. The specific distribution method can be determined through table lookup according to the operation parameters and/or the environment parameters of the multi-split air conditioner.
The set time length is any value in 1min and 3min, and can be specifically determined according to the number of the newly opened indoor units of the multi-split air conditioner. The set time length is positively correlated with the number of the newly opened indoor units, and the more the number of the newly opened indoor units is, the longer the set time length is. The indoor unit operation refers to that a part of the indoor units are cooled and the rest of the indoor units are standby, or a part of the indoor units are heated and the rest of the indoor units are standby.
By adopting the method for controlling the air conditioner, when a part of indoor units are operated and a new indoor unit is started, the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started is increased, and the controllable total opening is obtained. And uniformly distributing the controllable total opening to the electronic expansion valves of all the running indoor units, and regulating the opening of the electronic expansion valves of all the running indoor units to the distributed opening. And after the set time is operated, the opening degrees of the electronic expansion valves of all the operated indoor units are adjusted to enable the superheat degree to be in a set range. When a new indoor unit is started, the total electronic expansion valve opening of the indoor units of the multi-split air conditioning system is increased in a controllable range based on the sum of the original opening, and the opening of the electronic expansion valve is comprehensively distributed, so that the multi-split air conditioner is in a stable state when the new indoor unit is started, and the probability of liquid return of a compressor is reduced.
Based on the above-mentioned structure of the air conditioner, as shown in fig. 2, an embodiment of the disclosure provides a method for controlling the air conditioner, including:
and S21, when part of the indoor units are operated and a new indoor unit is started, the processor acquires the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started.
S22, the processor determines a forward correction coefficient according to the number of the new indoor units started.
S23, the processor corrects the total opening according to the forward correction coefficient to obtain the controllable total opening.
And S02, the processor evenly distributes the controllable total opening to the electronic expansion valves of all the operated indoor units, and adjusts the opening of the electronic expansion valves of all the operated indoor units to the distributed opening.
And S03, after the set time is operated, the processor adjusts the opening degrees of the electronic expansion valves of all the operated indoor units to enable the superheat degree to be in a set range.
The controllable total opening is in a safe opening range in which the system can avoid liquid return. In the embodiment of the disclosure, the safety opening range may be specifically measured through experiments, may be obtained through experience, or may be determined through user setting.
By adopting the method for controlling the air conditioner provided by the embodiment of the disclosure, when a part of indoor units are operated and a new indoor unit is started, the situation that the opening degree of the total electronic expansion valve of the system is controlled improperly can occur due to the starting of the new indoor unit, so that the probability of liquid return is high. Therefore, the processor acquires the total opening of the electronic expansion valve of the indoor unit which is operated before the new indoor unit is started, and determines the forward correction coefficient according to the number of the opened new indoor units, so that the forward correction coefficient is matched with the number of the opened new indoor units, and on the basis, the processor corrects the total opening according to the forward correction coefficient to obtain the controllable total opening, so that the controllable total opening is matched with the number of the opened indoor units, and the accuracy of the controllable total opening is improved.
Optionally, the processor determines the forward correction coefficient according to the number of new indoor units turned on, including: the processor determines a forward correction coefficient corresponding to the number of new indoor units turned on according to the first relationship.
The forward correction coefficient may be any value in [1.1,1.6 ]. The positive correction coefficient is inversely related to the number of indoor units that are turned on, and the more the indoor units are turned on, the smaller the positive correction coefficient is, and the first relationship can be determined according to experimental measurement or user setting or obtained through table lookup.
In this way, the processor determines the forward correction coefficient corresponding to the number of the opened new indoor units according to the first relation, so that the forward correction coefficient can be matched with the number of the opened new indoor units, and the accuracy of the forward correction coefficient is improved.
Optionally, the processor distributes the controllable total opening to the electronic expansion valves of all the operated indoor units on average, and adjusts the opening of the electronic expansion valves of all the operated indoor units to the distributed opening, including: the processor calculates k0=k1×a0/(m+l); the processor adjusts the opening degrees of the electronic expansion valves of all the running indoor units to the allocated opening degrees; wherein, K0 is the opening degree after distribution, K1 is the total opening degree of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, a0 is the positive correction coefficient, m the number of the indoor units operated before the new indoor unit is started, and L is the number of the indoor units which are started newly.
In this way, the processor calculates k0=k1×a0/(m+l), corrects the total opening by the forward correction coefficient, and increases the total opening, thereby obtaining a controllable total opening in the range of the safe opening for avoiding the liquid return of the system. Under the condition that a new indoor unit is opened, the processor adjusts the opening degrees of the electronic expansion valves of all the operated indoor units to the distributed unified opening degrees, and distributes the controllable total opening degrees to the electronic expansion valves of all the operated indoor units in an average way, so that the total opening degrees of the system are controlled properly when the new indoor unit is opened, and the probability of liquid return of the system is reduced.
Based on the above-mentioned structure of the air conditioner, as shown in fig. 3, an embodiment of the disclosure provides a method for controlling the air conditioner, including:
and S01, when part of indoor units are operated and a new indoor unit is started, the processor increases the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, and the controllable total opening is obtained.
And S02, the processor evenly distributes the controllable total opening to the electronic expansion valves of all the operated indoor units, and adjusts the opening of the electronic expansion valves of all the operated indoor units to the distributed opening.
S31, after the set time length is operated, the processor determines a target superheat range according to the operation time length.
And S32, when the superheat degree of the running indoor unit is larger than the maximum value of the target superheat degree range, the processor increases the opening degree of the electronic expansion valve.
And S33, when the superheat degree of the running indoor unit is smaller than the minimum value of the target superheat degree range, the processor reduces the opening degree of the electronic expansion valve.
The superheat degree of the embodiment of the disclosure refers to a difference value between an air pipe temperature and a liquid pipe temperature of an indoor unit. In practical application, when the opening degrees of the electronic expansion valves of all the running indoor units are operated for a first time period after the full set time period by the opening degrees distributed evenly by the controllable total opening degrees, determining a target superheat degree range [ b1-1, b1+1] corresponding to the first time period. The indoor units running in the system respectively determine the current superheat delta Tn according to the air pipe temperature and the liquid pipe temperature, and adjust the opening of the electronic expansion valve. If DeltaTn > (b1+1), increasing the opening of the electronic expansion valve according to the speed of the step c 1/s until (b 1-1) is less than or equal to DeltaTn is less than or equal to (b1+1); if (b 1-1) is less than or equal to delta Tn is less than or equal to (b 1+1), the current opening of the electronic expansion valve is kept unchanged; if DeltaTn < (b 1-1), reducing the opening of the electronic expansion valve according to the speed of the step c 1/s until (b 1-1) is less than or equal to DeltaTn is less than or equal to (b1+1); and when the running time reaches the second time after the first time, determining a target superheat degree range [ b2-2, b1+2] corresponding to the second time, namely, determining the current superheat degree delta Tn of each indoor unit running in the system according to the air pipe temperature and the liquid pipe temperature of each indoor unit, and adjusting the opening of each electronic expansion valve. If DeltaTn > (b2+2), increasing the opening of the electronic expansion valve according to the speed of the step c 2/s until (b 2-2) is less than or equal to DeltaTn is less than or equal to (b2+2); if (b 2-2) is less than or equal to delta Tn is less than or equal to (b2+2), the current opening of the electronic expansion valve is kept unchanged; if DeltaTn < (b 2-2), decreasing the opening of the electronic expansion valve according to the speed of the step c 2/s until (b 2-2) is less than or equal to DeltaTn less than or equal to (b2+2). b1 is any value in the value range [5, 10], and b2 is any value in the value range [0,2 ]. c1 and c2 are determined according to the operation time length, and can be specifically determined by a table lookup method or a user setting or experimental mode. The first duration is any value in [5min,10min ], and can be specifically determined according to the number of indoor units newly started by the multi-split air conditioner. The second duration is any value, and in the embodiment of the present disclosure, the second duration is a duration from when the indoor unit runs through the first duration to when the indoor unit is powered off.
By adopting the method for controlling the air conditioner provided by the embodiment of the disclosure, after the set time length is operated, the system needs to adjust the opening of the electronic expansion valve of each indoor unit at the moment so as to meet the temperature requirement in each room, and the temperature adjusting effect is ensured. However, the electronic expansion valves of the indoor units may have excessively large opening degree adjustment, which may cause unstable overall opening degree of the system and may also easily cause liquid return, so that the processor determines a target superheat degree range according to the operation duration, increases the opening degree of the electronic expansion valves when the superheat degree of the indoor unit in operation is greater than the maximum value of the target superheat degree range, and decreases the opening degree of the electronic expansion valves when the superheat degree of the indoor unit in operation is less than the minimum value of the target superheat degree range. Different target superheat ranges are set for different operation time lengths, so that the opening degree of the electronic expansion valve of each indoor unit is slowly transited to the set superheat, and the process of the transition of the system into normal operation is more stable.
Optionally, the processor determines the target superheat range according to the operation duration, including: and the processor determines a target superheat range corresponding to the operation duration according to the second relation.
Wherein the second relationship may be determined experimentally or user-set or obtained by look-up tables. The operation time length is inversely related to the target superheat degree range, and the higher the operation time length is, the smaller the upper limit value and the lower limit value of the target superheat degree are.
In this way, the processor determines the target superheat degree range corresponding to the operation time according to the second relation, and can enable the target superheat degree range to be matched with the operation time, so that the accuracy of the target superheat degree range is improved.
Based on the above-mentioned structure of the air conditioner, as shown in fig. 4, an embodiment of the disclosure provides a method for controlling the air conditioner, including:
and S01, when part of indoor units are operated and a new indoor unit is started, the processor increases the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, and the controllable total opening is obtained.
And S02, the processor evenly distributes the controllable total opening to the electronic expansion valves of all the operated indoor units, and adjusts the opening of the electronic expansion valves of all the operated indoor units to the distributed opening.
And S03, after the set time is operated, the processor adjusts the opening degrees of the electronic expansion valves of all the operated indoor units to enable the superheat degree to be in a set range.
And S41, when the running indoor unit is closed, the processor controls the electronic expansion valve corresponding to the closed indoor unit to be closed.
By adopting the method for controlling the air conditioner provided by the embodiment of the disclosure, when the running indoor unit is closed, the processor controls the electronic expansion valve corresponding to the closed indoor unit to be closed so as to meet the requirement of a user on temperature control. For example, if a part of the indoor units which are running are suddenly closed, the opening of the electronic expansion valve corresponding to the closed indoor units is immediately closed to 0 steps at a preset speed of c3 steps/s; the rest indoor units which are not closed continue to keep the original control state and continue to operate. If the remaining indoor units receive all closing instructions, the corresponding remaining indoor units are closed to 0 steps according to the speed of c3 steps/s, and all the indoor units in the system stop running. C3 is determined according to the operation time length, and can be specifically determined by a table lookup method or a user setting or experimental mode.
As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 800 for controlling an air conditioner, including a processor (processor) 801 and a memory (memory) 802. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 803 and a bus 804. The processor 801, the communication interface 803, and the memory 802 may communicate with each other via the bus 804. The communication interface 803 may be used for information transfer. The processor 801 may call logic instructions in the memory 802 to perform the method for controlling an air conditioner of the above-described embodiment.
Further, the logic instructions in the memory 802 described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product.
The memory 802 is a computer-readable storage medium that can be used to store a software program, a computer-executable program, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 801 executes functional applications and data processing by executing program instructions/modules stored in the memory 802, i.e., implements the method for controlling an air conditioner in the above-described embodiment.
Memory 802 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, memory 802 may include high-speed random access memory, and may also include non-volatile memory.
As shown in conjunction with fig. 6, an embodiment of the present disclosure provides an air conditioner 900, including: an air conditioner body, and the above-described device 800 for controlling an air conditioner. The apparatus 800 for controlling an air conditioner is installed at an air conditioner body. The mounting relationship described herein is not limited to being placed inside the air conditioner, but also includes mounting connections with other components of the air conditioner, including but not limited to physical connections, electrical connections, or signal transmission connections, etc. Those skilled in the art will appreciate that the apparatus 800 for controlling an air conditioner may be adapted to a viable body of an air conditioner, thereby achieving other viable embodiments.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for controlling an air conditioner, wherein the air conditioner includes a plurality of indoor units and electronic expansion valves provided corresponding to the plurality of indoor units; the method comprises the following steps:
when a part of indoor units are operated and a new indoor unit is started, increasing the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is started to obtain a controllable total opening;
the controllable total opening degree is evenly distributed to the electronic expansion valves of all the running indoor units, and the opening degree of the electronic expansion valves of all the running indoor units is adjusted to the distributed opening degree;
and after the set time is operated, the opening degrees of the electronic expansion valves of all the operated indoor units are adjusted to enable the superheat degree to be in a set range.
2. The method of claim 1, wherein increasing the total opening of the electronic expansion valve of the indoor unit operated before the new indoor unit is opened to obtain a controllable total opening comprises:
acquiring the total opening of an electronic expansion valve of the indoor unit which is operated before the new indoor unit is started;
determining a forward correction coefficient according to the number of the new indoor units;
and correcting the total opening according to the forward correction coefficient to obtain the controllable total opening.
3. The method of claim 2, wherein determining the forward correction factor based on the number of new indoor unit openings comprises:
and determining a forward correction coefficient corresponding to the number of the new indoor units started according to the first relation.
4. A method according to any one of claims 1 to 3, wherein said equally distributing the controllable total opening to the electronic expansion valves of all the operated indoor units and adjusting the opening of the electronic expansion valves of all the operated indoor units to the distributed opening comprises:
calculating k0=k1×a0/(m+l);
adjusting the opening degrees of the electronic expansion valves of all the running indoor units to the allocated opening degrees;
wherein, K0 is the opening degree after distribution, K1 is the total opening degree of the electronic expansion valve of the indoor unit operated before the new indoor unit is started, a0 is the positive correction coefficient, m the number of the indoor units operated before the new indoor unit is started, and L is the number of the indoor units which are started newly.
5. A method according to any one of claims 1 to 3, wherein adjusting the opening degree of the electronic expansion valves of all the operated indoor units so that the degree of superheat is in a set range comprises:
determining a target superheat range according to the operation duration;
when the superheat degree of the running indoor unit is larger than the maximum value of the target superheat degree range, increasing the opening degree of the electronic expansion valve;
and when the superheat degree of the running indoor unit is smaller than the minimum value of the target superheat degree range, reducing the opening degree of the electronic expansion valve.
6. The method of claim 5, wherein determining the target superheat range based on the run length comprises:
and determining a target superheat range corresponding to the operation duration according to the second relation.
7. A method according to any one of claims 1 to 3, further comprising:
when the running indoor unit is closed, the electronic expansion valve corresponding to the closed indoor unit is controlled to be closed.
8. An apparatus for controlling an air conditioner comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling an air conditioner according to any one of claims 1 to 7 when the program instructions are run.
9. An air conditioner, comprising:
the air conditioner body comprises a plurality of indoor units and electronic expansion valves which are arranged corresponding to the plurality of indoor units; the method comprises the steps of,
the apparatus for controlling an air conditioner as claimed in claim 8, mounted to the air conditioner body.
10. A computer readable storage medium storing program instructions which, when executed, are adapted to cause a computer to carry out the method for controlling an air conditioner according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311225792.8A CN117308265A (en) | 2023-09-21 | 2023-09-21 | Method and device for controlling air conditioner, air conditioner and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311225792.8A CN117308265A (en) | 2023-09-21 | 2023-09-21 | Method and device for controlling air conditioner, air conditioner and computer readable storage medium |
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