CN113339947B - Control method and device of air conditioner, air conditioner and storage medium - Google Patents
Control method and device of air conditioner, air conditioner and storage medium Download PDFInfo
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- CN113339947B CN113339947B CN202110556848.2A CN202110556848A CN113339947B CN 113339947 B CN113339947 B CN 113339947B CN 202110556848 A CN202110556848 A CN 202110556848A CN 113339947 B CN113339947 B CN 113339947B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- 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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application provides a control method and a control device of an air conditioner, the air conditioner and a storage medium, wherein the control method of the air conditioner comprises the following steps: acquiring the control temperature of at least one indoor unit and the ambient temperature of at least one room; correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in at least one indoor unit, the environment temperature in each room in at least one room and a preset superheat degree correction period; calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in at least one room; and controlling the air conditioner according to the corresponding superheat degree and the total actual frequency of each indoor unit. This application can combine actual frequency and modified superheat control air conditioner, refines the air-out temperature of air conditioner, has improved the precision of air conditioner air-out temperature, adjusts the air-out temperature simultaneously in real time and has also improved the response speed of air conditioner to improve user's comfortable degree.
Description
Technical Field
The application relates to the field of air conditioners, in particular to a control method and device of an air conditioner, the air conditioner and a storage medium.
Background
The multi-connected air conditioning (heat pump) unit is characterized in that one or more outdoor units are connected with a plurality of indoor units with different or same types and capacities to form a single air conditioning circulating system, and the single air conditioning circulating system can directly provide treated air for one or a plurality of areas.
In the prior art, indoor units in each room operate independently, the indoor units are controlled according to set temperature and target temperature of the indoor room, each indoor unit operates independently, and a common cold quantity adjusting mode of the indoor units is a shifting mode and comprises an ultrahigh adjusting mode, a high adjusting mode, a medium adjusting mode and a low adjusting mode, but the control precision is poor and the comfort is poor. For example: in the prior art, in order to maintain the indoor environment temperature at the set temperature of the air conditioner, the working power of the compressor is usually changed so as to maintain the temperature at the set temperature, if the temperature is controlled only by the power of the compressor, the control precision is low, and meanwhile, the indoor unit is frequently stopped; or change the frequency of the indoor set, increase or reduce the corresponding air output, thus maintain the temperature at the settlement temperature, but if the direct indoor set switches over into the low damper, the indoor air cycle number of times is reduced, lack the circulation of air, to the place that the personnel are more, the comfortableness is influenced.
Disclosure of Invention
The application provides a control method of an air conditioner, and the air outlet temperature of the air conditioner is controlled by combining a superheat degree adjusting mode on the basis of actual operation frequency, so that the accuracy of the air outlet temperature of the air conditioner is improved, and the comfort level of a user is improved.
In one aspect, the present application provides a method for controlling an air conditioner, where the air conditioner includes at least one indoor unit, the at least one indoor unit is disposed in at least one room, and one indoor unit is disposed in one room, and the method includes:
if the air conditioner is electrified, acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room;
correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period;
calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room;
and controlling the air conditioner according to the corresponding superheat degree of each indoor unit and the total actual frequency.
In some embodiments of the present application, the air conditioner includes a preset superheat degree debugging parameter, and the correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit of the at least one indoor unit, the ambient temperature in each room of the at least one room, and a preset superheat degree correction period includes:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating at least one ambient temperature difference according to the ambient temperatures and the superheat correction period;
and correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter.
In some embodiments of the present application, the calculating, according to the respective control temperatures and the respective environmental temperatures, a total actual frequency currently required for each indoor unit includes:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating the total heat demand of each room according to each temperature difference;
and calculating the total actual frequency currently required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter.
In some embodiments of the present application, said calculating the total heat requirement of each room according to each temperature difference comprises:
acquiring the air density of a room corresponding to at least one indoor unit;
and calculating the total heat demand according to the air density of each room, the preset rated air output of each indoor unit and preset power debugging parameters.
In some embodiments of the present application, after calculating the total actual frequency according to the total heat demand, the preset rated heat, the preset total rated frequency and the preset frequency parameter, the method further comprises:
comparing the total rated frequency to the total actual frequency;
if the total actual frequency is larger than the total rated frequency, controlling the air conditioner to increase a first preset frequency to operate according to a first preset period on the basis of the total rated frequency;
and if the total actual frequency is less than or equal to the total rated frequency, controlling the air conditioner to operate according to the total actual frequency.
In some embodiments of the present application, an electronic expansion valve is disposed in each of the indoor units, and the air conditioner is controlled according to the superheat degree of each of the indoor units and the total actual frequency, and the method includes:
controlling the opening degree of each electronic expansion valve in each indoor unit according to the superheat degree of each indoor unit;
and controlling the air outlet temperature of each indoor unit according to the opening degree of each electronic expansion valve and the total actual frequency.
On the other hand, the present application further provides a control device of an air conditioner, the air conditioner includes at least one indoor unit, the at least one indoor unit is disposed in at least one room, and one indoor unit is disposed in one room, the device includes:
the acquisition module is used for acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room after the air conditioner is powered on;
the correction module is used for correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the ambient temperature in each room in the at least one room and a preset superheat degree correction period;
the calculation module is used for calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room;
and the control module is used for controlling the air conditioner according to the corresponding superheat degree and the total actual frequency of each indoor unit.
In some embodiments of the present application, the modification module is specifically configured to:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating at least one ambient temperature difference according to each ambient temperature and the superheat correction period;
and correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter.
In some embodiments of the present application, the calculation module is specifically configured to:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating the total heat demand of each room according to each temperature difference;
and calculating the total actual frequency currently required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter.
In some embodiments of the present application, the calculation module is specifically configured to:
acquiring the air density of a room corresponding to at least one indoor unit;
and calculating the total heat demand according to the air density of each room, the preset rated air output of each indoor unit and preset power debugging parameters.
In some embodiments of the present application, the control module is specifically configured to:
controlling the opening degree of each electronic expansion valve in each indoor unit according to the superheat degree of each indoor unit;
and controlling the air outlet temperature of each indoor unit according to the opening degree of each electronic expansion valve and the total actual frequency.
On the other hand, this application still provides an air conditioner, the air conditioner includes at least one indoor set, at least one indoor set sets up in at least one room, and a room sets up an indoor set, the air conditioner includes:
each indoor unit comprises one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement any one of the control methods and control apparatuses of the air conditioner.
In another aspect, the present application further provides a storage medium having a computer program stored thereon, where the computer program is loaded by a processor to execute any one of the control method and the control device for an air conditioner.
The control method of the air conditioner can further control the superheat degree of the air conditioner on the basis of controlling the actual frequency of the air conditioner, combines the combined control of the superheat degree and the actual frequency, refines the air outlet temperature of the air conditioner, improves the accuracy of the air outlet temperature of the air conditioner, adjusts the air outlet temperature in real time, improves the response speed of the air conditioner, and accordingly improves the comfort degree of a user.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic view of a control system of an air conditioner provided in an embodiment of the present application;
FIG. 2 is a schematic flow chart of an embodiment of a method for controlling an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an air conditioner including a plurality of indoor units according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an embodiment of a control device of an air conditioner in the embodiment of the present application;
fig. 5 is a schematic structural diagram of an embodiment of an air conditioner in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "a" and "an" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated features is essential. Thus, a feature defined as "a" or "an" may explicitly or implicitly include one or more of the described feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The application provides a control method and device of an air conditioner, the air conditioner and a storage medium, which are respectively explained below.
Some basic concepts involved in the embodiments of the present application are first described below:
air Conditioner (Air Conditioner): generally comprises a cold source/heat source device, a cold and hot medium delivery and distribution system, a terminal device and other auxiliary devices. The system mainly comprises a refrigeration host, a water pump, a fan and a pipeline system. The end device is responsible for specifically processing the air state by utilizing the cold and heat quantity from the transmission and distribution so as to enable the air parameters of the target environment to meet certain requirements.
Multi-connected air conditioner (heat pump) set (a central air conditioner): one or more air-cooled outdoor units can be connected with a plurality of direct evaporative indoor units with different or same types and capacities to form a single refrigeration cycle system, and the single refrigeration cycle system can directly provide treated air for one or more areas.
Degree of superheat: the degree of superheat refers to the degree to which the steam temperature is higher than the saturation temperature at the corresponding pressure. For water and steam, the saturation curve is an increasing curve on the steam diagram, i.e. as the pressure increases, the saturation temperature of the water increases. Similarly, when the water vapor is already in a superheated state, if the pressure is increased, the corresponding saturation temperature is increased, and the degree that the temperature is higher than the saturation temperature is also decreased, that is, the degree of superheat of the steam is decreased.
Electronic expansion valve: the electronic expansion valve is a control valve, and the opening of the valve is controlled by sensing the change of the superheat degree of the refrigerant at the outlet of the evaporator through a temperature sensing bulb, so that the flow of the refrigerant entering the evaporator is adjusted, and the flow of the refrigerant in a copper pipe of the evaporator is matched with the heat load of the evaporator. When the heat load of the evaporator is increased, the opening degree of the electronic expansion valve of the central air conditioner is also increased, namely the flow rate of the refrigerant is also increased, and conversely, the flow rate of the refrigerant is reduced.
Referring to fig. 1, fig. 1 is a schematic view of a scene of a control method of an air conditioner according to an embodiment of the present disclosure, a control system of the air conditioner may include at least one indoor unit 100 and an outdoor unit 200, the indoor unit 100 and the outdoor unit 200 are connected through a pipeline, and the indoor unit 100 may receive a control signal on a remote controller or a control panel to perform a series of functions of the air conditioner indoor unit, such as cooling, heating, dehumidifying, and dedusting. The outdoor unit 200 can perform corresponding operations such as condensation, heat dissipation, and exhaust in cooperation with the indoor unit 100; the indoor unit 100 may also execute a corresponding preset program, for example, the control method of the air conditioner in the present application, before executing a corresponding action according to the control signal.
In the embodiment of the present invention, the indoor unit 100 includes, but is not limited to, a wall-mounted indoor unit, a cabinet-mounted indoor unit, a window-mounted indoor unit, a ceiling-mounted indoor unit, an embedded indoor unit, and the like.
In the embodiment of the present application, the indoor unit 100 and the outdoor unit 200 may be connected in any manner, including but not limited to signal communication through an electronic circuit and communication through a wireless signal, where the wireless signal may be computer network communication of a TCP/IP Protocol Suite (TCP/IP) or a User Datagram Protocol (UDP).
Those skilled in the art can understand that the application environment shown in fig. 1 is only one application scenario of the present application, and does not constitute a limitation on the application scenario of the present application, and other application environments may further include more or fewer indoor units and outdoor units than those shown in fig. 1, for example, only 1 indoor unit or outdoor unit is shown in fig. 1, and the control system of the air conditioner of the present application may further include one or more indoor units and outdoor units for executing the control method of the air conditioner of the present application, which is not limited herein.
It should be noted that the scenario diagram of the control system of the air conditioner shown in fig. 1 is only an example, the control system and the scenario of the air conditioner described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the control system of the air conditioner and the appearance of new service scenarios.
As shown in fig. 2, fig. 2 is a schematic flowchart of an embodiment of a control method of an air conditioner according to an embodiment of the present disclosure, where the air conditioner includes at least one indoor unit, the at least one indoor unit is disposed in at least one room, and one indoor unit is disposed in one room, and the control method of the air conditioner may include the following steps 201 to 203:
201. and if the air conditioner is electrified, acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room.
The control temperature of the indoor unit in this step generally refers to a control temperature on a control device of the air conditioner, for example, a remote controller of the air conditioner, or a control temperature on a control panel of the air conditioner, and a user can set a control temperature through the control device. In a general home air conditioner, there is generally only one indoor unit of the air conditioner, and the indoor unit is installed in one indoor room, such as a living room, a bedroom, a study room, etc. However, in a multi-split air conditioner, the multi-split air conditioner is included, and in an office, the multi-split air conditioner is often used, and in this case, one indoor unit is placed in one room, for example, one indoor unit is placed in the office 1, another indoor unit is placed in the office 2, and another indoor unit is placed in a public office area.
Meanwhile, the indoor units can be independently controlled, the control temperatures of different indoor units can be different, and at the moment, because the control temperatures of the indoor units of different rooms are different, the temperature difference in different rooms can be caused. At this time, the ambient temperature in the room can be acquired by installing a temperature sensor, the temperature sensor can be installed in the indoor unit of the air conditioner, or any one of the surfaces of the indoor unit is at a position which does not affect the structure of the air conditioner, or the current indoor temperature can be calculated according to the running time of the air conditioner by setting the temperature and acquiring the space size of the room, and the specific method for acquiring the indoor temperature is not limited here.
202. And correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period.
The concept of the superheat degree related in the step is not repeated herein, the superheat degree is corrected here, the opening and closing degree of an electronic expansion valve in an indoor unit can be changed, the related concept of the electronic expansion valve is not repeated herein, and the opening and closing degree of the electronic expansion valve can adjust the flow of refrigerant entering an evaporator, so that the flow of the refrigerant inside a copper pipe of the electronic expansion valve is matched with the heat load of the evaporator, the superheat degree is corrected, namely, the superheat degree is changed, and the temperature of outlet air can be influenced.
In an embodiment of the present application, the air conditioner includes a preset superheat degree debugging parameter, and the correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the ambient temperature in each room in the at least one room, and a preset superheat degree correction cycle includes:
and calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit.
As can be seen from the foregoing embodiments, since the set temperatures of the different indoor units may be different, and therefore, the ambient temperatures may also be different, and therefore, the temperature differences between the different set temperatures and the ambient temperatures corresponding thereto are different, and at the same time, the indoor units are not necessarily simultaneously turned on, and therefore, a plurality of temperature differences can be obtained according to the number of the specifically turned-on indoor units.
And calculating at least one ambient temperature difference according to the ambient temperatures and the superheat correction period.
Here, the temperature in the same room may also change with the change of time due to the operation of the air conditioner indoor unit, and since the ambient temperature is obtained in real time, the ambient temperature before 10 minutes may be obtained, and similarly, the ambient temperature after 10 minutes may also be obtained, at this time, the mentioned 10 minutes may be the superheat degree correction period, and since the operation of the air conditioner indoor unit, the ambient temperature before 10 minutes is different from the ambient temperature after 10 minutes, after the difference is obtained, the ambient temperature difference may be obtained, and of course, the superheat degree correction period may be adjusted according to different situations, and is not limited specifically here.
And correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter.
It should be noted that the superheat degree debugging parameter may be specifically adjusted, and when the air conditioner is used and the equipment is aged, the cooling or heating effect is reduced, and at this time, the superheat degree debugging parameter may be adjusted according to the specifically reduced effect, and certainly in an initial state, the superheat degree debugging parameter may be 1.
Since different indoor units are installed in different rooms, correction of a plurality of degrees of superheat is also included, and here, it is only necessary to correspond to relevant temperature data, parameters, and the like of the corresponding indoor units in the corresponding rooms.
For example, the method for calculating the corrected superheat degree may be: m =: (E,. DELTA.t ring) + Y,
wherein:
m is the corrected superheat degree;
e is the difference between the ambient temperature and the set temperature;
loop Δ T — is the ambient temperature difference before and after each T weeks;
y is the superheat degree debugging parameter.
203. And calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room.
Since the air conditioner has a total operating frequency when controlling each indoor unit, in order to maintain the indoor environment temperature at a stable temperature, the frequency of the air conditioner is constantly changed, that is, the air conditioner cannot always operate at the rated frequency, if the air conditioner always operates at the rated frequency, for example, in a cooling mode, the room temperature cannot be maintained at a specific temperature, and the room temperature is lower than the specific temperature until the room temperature cannot be reduced any more, therefore, a specific operating frequency for the environment temperature in the room needs to be calculated, and the indoor units of the air conditioner can stabilize the room temperature according to the actual operating frequency.
In this embodiment of the present application, the calculating, according to the respective control temperatures and the respective environmental temperatures, a total actual frequency currently required by the respective indoor units includes:
and calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit.
As can be seen from the foregoing embodiments, since the set temperatures of the different indoor units may be different, and therefore, the ambient temperatures may also be different, and therefore, the temperature differences between the different set temperatures and the ambient temperatures corresponding thereto are different, and at the same time, the indoor units are not necessarily simultaneously turned on, and therefore, a plurality of temperature differences can be obtained according to the number of the specifically turned-on indoor units.
From each temperature difference, the total heat demand of each room is calculated.
The difference between the different temperature differences, which may represent the ambient temperature in the room at the time from the side, and the set temperature, the larger the temperature difference, the higher the absolute value of the heat required by the ambient temperature (the required heat may be negative in the cooling mode), and the smaller the temperature difference, the smaller the required heat.
In this embodiment, the calculating the total heat demand of each room according to each temperature difference includes:
and acquiring the air density of a room corresponding to at least one indoor unit.
Because the control temperatures of different indoor units may be different, the ambient temperature may also be different, and because of the principle of expansion with heat and contraction with cold, the indoor air densities in different rooms are also different at different temperatures, so a plurality of air densities corresponding to the respective rooms may also be obtained, and the method for obtaining the air density may use an air density sensor, or may use a pressure sensor, to measure the relative pressures of the indoor air at different temperatures at this time, and calculate the air density in this room at this time according to the relative pressures, and the specific method for obtaining the air density is not limited here.
And calculating the total heat demand according to the air density of each room, the preset rated air output of each indoor unit and preset power debugging parameters.
The rated air output is determined by the rated power of the indoor unit and the size of the air outlet, so that the rated air output is a fixed value and is an attribute of the air conditioner when the air conditioner leaves a factory. In addition, the preset power debugging parameters can be adjusted, and as the air conditioner is used and the equipment is aged, the power of the air conditioner may be reduced, so that the cooling or heating effect is reduced, and at the moment, the power debugging parameters can be correspondingly modified.
In an exemplary method for calculating the total heat demand, the heat required in each room is calculated first, and in this case, the calculating method may be: q 1 ＝∫(L*ρ*ΔT)＝∫[L*ρ*(T 1 -T Let 1 )]* K, after calculating the heat demand in single room, add the heat demand in each room again, alright obtain total heat demand, specifically be: q S ＝Q 1 +Q 2 ……+Q n 。
Wherein Q S The total heat demand of the system is kW;
Q 1 、Q 2 ……Q n for each indoor unit's cooling capacity requirement, Q 1 In order to be the heat requirement of the room 1,Q 2 for the heat requirement of room 2, Q n The heat demand of room n is in kW;
l is the air volume of the corresponding indoor unit, and the unit is m3/h;
k is a correction coefficient, defaults to 1, and can be determined by engineering debugging;
ρ is the air density;
T 1 is the ambient temperature of the room 1;
T 1 is provided Is the control temperature of the indoor unit in room 1.
And calculating the total actual frequency required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter.
After the air conditioner leaves a factory, the supply of the total rated heat and the total rated frequency cannot be adjusted according to the hardware of the air conditioner, along with the use of the air conditioner, the equipment is aged, the refrigerating or heating effect is reduced, the preset frequency parameters can be correspondingly adjusted, and the detailed description is omitted here.
In an exemplary embodiment, the method for calculating the total actual frequency may be:
wherein N is s -the corrected output frequency of the press;
lambda is a preset frequency parameter, defaults to 1, and can be determined by engineering debugging;
Q s -kilowatt (kW) for the total heat demand of the system;
Q d -a total rated heat, in kilowatts (kW), preset for the system;
N d -a nominal frequency preset for the system.
In an embodiment of the present application, after the calculating the total actual frequency according to the total heat demand, a preset rated heat, a preset total rated frequency, and a preset frequency parameter, the method further includes:
comparing the total rated frequency and the total actual frequency.
In traditional frequency conversion air conditioner, through the mode that changes compressor frequency in real time, alright with under specific temperature with indoor ambient temperature control, this application can not only through revising behind the superheat degree, combines the superheat degree of revising to adjust air conditioner indoor machine's air-out temperature, also can not revising under the condition of superheat degree equally, only lean on the frequency of adjusting the air conditioner operation, alright with the ambient temperature in the control room maintains under certain condition, satisfy user's demand. When the total rated frequency is compared with the total actual frequency, two situations occur:
(1) And if the total actual frequency is greater than the total rated frequency, controlling the air conditioner to increase a first preset frequency to operate according to a first preset period on the basis of the total rated frequency.
When the total actual frequency is greater than the total rated frequency, it means that the current set temperature is far lower than the ambient temperature, for example, in a cooling mode, the set temperature is 16 degrees, and the ambient temperature may be 30 degrees, at this time, the air conditioner needs to operate at a high frequency, at this time, the first preset period may be 3 minutes, the first preset operating frequency may be 100kW, it should be noted that the first preset period and the first preset operating frequency may be adjusted according to specific situations, and are not limited herein.
(2) And if the total actual frequency is less than or equal to the total rated frequency, controlling the air conditioner to operate according to the total actual frequency.
When the total actual frequency is less than or equal to the total rated frequency, it means that the ambient temperature is less than or equal to the set temperature at the moment, and the requirement of the user is met at the moment, and in order to save energy, the air conditioner is operated according to the actual operating frequency.
When the air conditioner has a plurality of indoor units, the sum of the actual frequency of the operation of each indoor unit is recorded as the total actual frequency.
204. And controlling the air conditioner according to the corresponding superheat degree of each indoor unit and the total actual frequency.
According to the description in the above embodiment, the outlet air temperature of the indoor unit can be further adjusted by combining the corrected superheat degree on the basis that the air conditioner is operated according to the total actual frequency, and the opening and closing degree of the electronic expansion valve can be changed by changing the superheat degree, and can further control the outlet air temperature, so that the accuracy of the outlet air temperature can be improved by combining the regulation and the control of the opening and closing degree.
In this embodiment, the step of controlling the air conditioner according to the superheat degree of each indoor unit and the total actual frequency includes:
and controlling the opening degree of each electronic expansion valve in each indoor unit according to the superheat degree of each indoor unit.
The method for adjusting the opening degree of the electronic expansion valve through the superheat degree to further adjust the outlet air temperature has been described in the above embodiments, and is not described herein again, because when the air conditioner operates, a plurality of indoor units may be operating, and the environmental temperatures may be different in rooms corresponding to different indoor units, so the corrected superheat degree may also be different, and at this time, the opening and closing degree of the electronic expansion valve in the corresponding room may be adjusted according to the different superheat degrees.
And controlling the air outlet temperature of each indoor unit according to the opening degree of each electronic expansion valve and the total actual frequency.
After the electronic expansion valves in the indoor units are adjusted, the outlet air temperature of each indoor unit of the air conditioner is adjusted according to the always actual frequency.
According to the control method of the air conditioner, the superheat degree of the air conditioner can be further controlled on the basis of controlling the actual frequency of the air conditioner, the air outlet temperature of the air conditioner is refined by combining the combination control of the superheat degree and the actual frequency, the accuracy of the air outlet temperature of the air conditioner is improved, meanwhile, the response speed of the air conditioner is also improved by adjusting the air outlet temperature in real time, and therefore the comfort degree of a user is improved.
To better understand the structure of the air conditioner including multiple indoor units in the embodiment of the present application, please refer to fig. 3 specifically, and fig. 3 is a schematic structural diagram of the air conditioner system including multiple indoor units in the embodiment of the present application.
In order to better implement the control method of the air conditioner in the embodiment of the present application, in addition to the control method of the air conditioner, in the embodiment of the present application, a control device of the air conditioner is further provided, as shown in fig. 4, the air conditioner includes at least one indoor unit, the at least one indoor unit is disposed in at least one room, and one indoor unit is disposed in one room, the device 400 includes:
an obtaining module 401, configured to obtain a control temperature of the at least one indoor unit and an ambient temperature of the at least one room if the air conditioner is powered on;
a correcting module 402, configured to correct a superheat degree corresponding to each indoor unit according to a control temperature of each indoor unit in the at least one indoor unit, an ambient temperature in each room in the at least one room, and a preset superheat degree correction period;
a calculating module 403, configured to calculate a total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room of the at least one room;
and the control module 404 is configured to control the air conditioner according to the superheat degree and the total actual frequency corresponding to each indoor unit.
The control method of the air conditioner provided by this embodiment can control the air conditioner to obtain the control temperature and the ambient temperature through the obtaining module 401, calculate the total actual frequency through the calculating module 403 according to the temperature data obtained by the obtaining module 401, further control the superheat degree of the air conditioner through the correcting module 402, combine the combined control of the superheat degree and the total actual frequency through the control module 404, refine the air outlet temperature of the air conditioner, improve the accuracy of the air outlet temperature of the air conditioner, adjust the air outlet temperature in real time, improve the response speed of the air conditioner, and thereby improve the comfort degree of a user.
In some embodiments of the present application, the modification module 402 is specifically configured to:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating at least one ambient temperature difference according to the ambient temperatures and the superheat correction period;
and correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter.
In some embodiments of the present application, the calculation module 403 is specifically configured to:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating the total heat demand of each room according to each temperature difference;
and calculating the total actual frequency currently required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter.
In some embodiments of the present application, the calculation module 403 is specifically configured to:
acquiring the air density of a room corresponding to at least one indoor unit;
and calculating the total heat demand according to the air density of each room, the preset rated air output of each indoor unit and preset power debugging parameters.
In some embodiments of the present application, the control module 404 is specifically configured to:
controlling the opening degree of each electronic expansion valve in each indoor unit according to the superheat degree of each indoor unit;
and controlling the air outlet temperature of each indoor unit according to the opening degree of each electronic expansion valve and the total actual frequency.
On the other hand, this application embodiment still provides an air conditioner, the air conditioner includes at least one indoor set, at least one indoor set sets up in at least one room, and a room sets up an indoor set, the air conditioner includes:
each indoor unit comprises one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method and the control apparatus of the air conditioner according to any one of the embodiments.
An embodiment of the present application further provides an air conditioner, which integrates the control device of the air conditioner according to any one of the embodiments of the present application, as shown in fig. 5, which shows a schematic structural diagram of the air conditioner according to the embodiment of the present application, specifically:
besides the devices included in the normal air conditioner, such as the compressor, the four-way valve, the electronic expansion valve, the low-pressure stop valve, the high-pressure stop valve, the gas-liquid separator, the low-pressure sensor, the high-pressure sensor, the external machine throttling device, the oil separator, the oil return capillary tube, etc., the air conditioner of the present embodiment may further include one or more processors 501 of the processing core, one or more memories 502 of the computer-readable storage medium, a power supply 503, an input unit 504, etc. Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 5 is not intended to be limiting of the air conditioner and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. Wherein:
the processor 501 is a control center of the control method of the air conditioner, connects various parts of the whole air conditioner by using various interfaces and lines, executes various functions of the air conditioner and processes data by running or executing software programs and/or modules stored in the memory 502 and calling data stored in the memory 502, thereby performing overall monitoring on the operation of the control method of the air conditioner. Optionally, processor 501 may include one or more processing cores; the Processor 501 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and preferably the processor 501 may integrate an application processor, which handles primarily the operating system, user interfaces, application programs, etc., and a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 501.
The memory 502 may be used to store software programs and modules, and the processor 501 executes various functional applications and data processing by operating the software programs and modules stored in the memory 502. The memory 502 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a control program of an air conditioner of the present application), and the like; the storage data area may store data created according to the use of the air conditioner, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.
The air conditioner further comprises a power source 503 for supplying power to each component, and preferably, the power source 503 may be logically connected to the processor 501 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The power supply 503 may also include any component such as one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
The air conditioner may further include an input unit 504, and the input unit 504 may be used to receive input numeric or character information, and generate a remote controller related to user settings and function control, a control panel of the air conditioner, or input through a smart home system such as a remote network, APP, or an instant voice signal.
Although not shown, the air conditioner may further include a display unit, for example, a display panel for displaying the air conditioner operation parameters, which is not described herein in detail.
In addition, in this embodiment, specifically, the processor 501 in the air conditioner loads an executable file corresponding to a process of one or more application programs into the memory 502 according to the following instructions, and the processor 501 runs the application programs stored in the memory 502, so as to implement various functions, for example:
if the air conditioner is powered on, acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room;
correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period;
calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room;
and controlling the air conditioner according to the corresponding superheat degree of each indoor unit and the total actual frequency.
To this end, an embodiment of the present application provides an air conditioner readable storage medium, which may include: read Only Memory (ROM), random Access Memory (RAM), and the like. The air conditioner control method comprises a step of storing a computer program, and a step of executing the steps in any one of the air conditioner control methods provided by the embodiments of the application by loading the computer program by a processor. For example, the computer program may be loaded by a processor to perform the steps of:
if the air conditioner is powered on, acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room;
correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period;
calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room;
and controlling the air conditioner according to the corresponding superheat degree of each indoor unit and the total actual frequency.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.
In specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as the same entity or several entities, and specific implementation of each unit or structure may refer to the foregoing method embodiment, which is not described herein again.
The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
The foregoing detailed description is directed to a method and an apparatus for controlling an air conditioner, the air conditioner, and a storage medium provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and implementations of the present application, and the descriptions of the foregoing embodiments are only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (6)
1. A method for controlling an air conditioner, the air conditioner including at least one indoor unit, the at least one indoor unit being installed in at least one room, one indoor unit being installed in each room, the method comprising:
if the air conditioner is powered on, acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room;
correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period;
calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room;
controlling the air conditioner according to the corresponding superheat degree and the total actual frequency of each indoor unit;
the air conditioner comprises preset superheat degree debugging parameters, and the superheat degree corresponding to each indoor unit is corrected according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction cycle, wherein the superheat degree debugging parameters comprise:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating at least one ambient temperature difference according to each ambient temperature and the superheat correction period;
correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter;
the calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room of the at least one room comprises:
calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit;
calculating the total heat demand of each room according to each temperature difference;
calculating the total actual frequency currently required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter;
calculating the total heat demand of each room according to each temperature difference, comprising:
acquiring the air density of a room corresponding to at least one indoor unit;
and calculating the total heat demand according to the air density of each room, the preset rated air output of each indoor unit, the preset power debugging parameter and each temperature difference.
2. The method of claim 1, wherein after calculating the total actual frequency according to the total heat demand, a preset rated heat, a preset total rated frequency and a preset frequency parameter, the method further comprises:
comparing the total rated frequency and the total actual frequency;
if the total actual frequency is larger than the total rated frequency, controlling the air conditioner to increase a first preset frequency to operate according to a first preset period on the basis of the total rated frequency;
and if the total actual frequency is less than or equal to the total rated frequency, controlling the air conditioner to operate according to the total actual frequency.
3. The method of claim 1, wherein an electronic expansion valve is provided in each indoor unit, and the controlling the air conditioner according to the superheat degree and the total actual frequency corresponding to each indoor unit comprises:
controlling the opening degree of each electronic expansion valve in each indoor unit according to the superheat degree of each indoor unit;
and controlling the air outlet temperature of each indoor unit according to the opening degree of each electronic expansion valve and the total actual frequency.
4. A control apparatus of an air conditioner, wherein the air conditioner includes at least one indoor unit, the at least one indoor unit is provided in at least one room, and one indoor unit is provided in one room, the apparatus comprising:
the acquisition module is used for acquiring the control temperature of the at least one indoor unit and the ambient temperature of the at least one room after the air conditioner is powered on;
the correction module is used for correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the ambient temperature in each room in the at least one room and a preset superheat degree correction period; the air conditioner comprises preset superheat degree debugging parameters, and the method for correcting the superheat degree corresponding to each indoor unit according to the control temperature of each indoor unit in the at least one indoor unit, the environment temperature in each room in the at least one room and a preset superheat degree correction period comprises the following steps: calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit; calculating at least one ambient temperature difference according to each ambient temperature and the superheat correction period; correcting the superheat degree of each indoor unit according to each temperature difference, each environment temperature difference and the superheat degree debugging parameter;
the calculation module is used for calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room in the at least one room; the calculating the total actual frequency currently required by the air conditioner according to the control temperature of each indoor unit and the ambient temperature in each room of the at least one room comprises: calculating at least one temperature difference, wherein the temperature difference is the temperature difference between the control temperature corresponding to each indoor unit and the environment temperature in the room corresponding to each indoor unit; calculating the total heat demand of each room according to each temperature difference; calculating the total actual frequency currently required by the air conditioner according to the total heat demand, the preset total rated heat, the preset rated frequency and the preset frequency parameter; calculating the total heat demand of each room according to each temperature difference, comprising: acquiring the air density of a room corresponding to at least one indoor unit; calculating the total heat demand according to the air density of each room, the preset rated air output and preset power debugging parameters of each indoor unit and each temperature difference;
and the control module is used for controlling the air conditioner according to the superheat degree corresponding to each indoor unit and the total actual frequency.
5. An air conditioner, characterized in that, the air conditioner includes at least one indoor unit, the at least one indoor unit is arranged in at least one room, one indoor unit is arranged in one room, the air conditioner includes:
each indoor unit comprises one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method of the air conditioner of any one of claims 1 to 3.
6. A storage medium having stored thereon a computer program to be loaded by a processor to execute the control method of an air conditioner according to any one of claims 1 to 3.
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| CN114838487B (en) * | 2022-05-16 | 2023-06-30 | 美的集团武汉暖通设备有限公司 | Control method of multi-split air conditioner, multi-split air conditioner and storage medium |
| CN115509276B (en) * | 2022-10-10 | 2024-05-07 | 厦门锐创节能科技有限公司 | Calculation method and monitoring device for heating or refrigerating power of equipment based on space meshing |
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