CN113959056A - Control method and control device for air conditioner and air conditioner - Google Patents

Control method and control device for air conditioner and air conditioner Download PDF

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Publication number
CN113959056A
CN113959056A CN202111275777.5A CN202111275777A CN113959056A CN 113959056 A CN113959056 A CN 113959056A CN 202111275777 A CN202111275777 A CN 202111275777A CN 113959056 A CN113959056 A CN 113959056A
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Prior art keywords
current
air conditioner
control
load
temperature
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CN202111275777.5A
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Chinese (zh)
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CN113959056B (en
Inventor
张虹
张瑞台
李玉阁
张捷
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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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
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a control method for an air conditioner, which comprises the following steps: acquiring the temperature of inlet and outlet water of an air conditioner and the current of a compressor of the air conditioner; determining the load regulation speed of the compressor according to the temperature and current of inlet and outlet water; the compressor is controlled to adjust the load at the load adjustment speed. Therefore, the influence of the temperature change of inlet and outlet water on the load regulation speed of the compressor can be weakened, and the stable operation of the air conditioning unit in the process of regulating the load is ensured. The application also discloses a controlling means and air conditioner for the air conditioner.

Description

Control method and control device for air conditioner and air conditioner
Technical Field
The application relates to the technical field of intelligent household appliances, for example, to a control method and a control device for an air conditioner and the air conditioner.
Background
The water-cooled air-conditioning unit belongs to an indirect refrigeration system, and utilizes a heat exchanger to make water and refrigerant exchange heat, and the cold energy can be transferred to the air contacted with the water after the water is cooled, so that the purpose of cooling is achieved. When the user uses the air conditioning unit, a target temperature may be preset. When the temperature of inlet and outlet water of the air conditioning unit is lower than the target temperature, the air conditioning unit can perform proportional integral differential operation on the temperature of the inlet and outlet water so as to increase the load of the compressor and realize air conditioning. However, when the temperature of the inlet and outlet water changes greatly, the compressor is loaded quickly, and therefore the air conditioning unit may be loaded too quickly to cause unstable output or protective shutdown.
An energy-saving control method for an air conditioning system includes: acquiring the current return water temperature of the air conditioner in real time; comparing the current air conditioner backwater temperature with a preset temperature value, and combining the current working mode of an air conditioning system to obtain a control mode; outputting a control signal of a loading/unloading module unit of the current loading/unloading period according to the control mode; and circulating the steps until the control signals for keeping the number of the current module units are output.
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:
according to the energy-saving control method, only one of a loading mode, a load shedding mode and a current working mode can be selected according to the return water temperature and the working mode of the air conditioner, but the speed of the compressor for adjusting the load still cannot be controlled, so that the stable operation of the unit in the process of adjusting the load cannot be ensured.
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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and a control device for an air conditioner and the air conditioner, so as to control the speed of a compressor for adjusting a load and ensure that an air conditioning unit stably operates in the process of adjusting the load.
In some embodiments, the control method for an air conditioner includes: acquiring the temperature of inlet and outlet water of an air conditioner and the current of a compressor of the air conditioner; determining the load regulation speed of the compressor according to the temperature and current of inlet and outlet water; the compressor is controlled to adjust the load at the load adjustment speed.
In some embodiments, the control apparatus for an air conditioner includes an obtaining module, a determining module, and a control module. An obtaining module configured to obtain an inlet and outlet water temperature of an air conditioner and a current of a compressor of the air conditioner; the determining module is configured to determine the load adjusting speed of the compressor according to the inlet and outlet water temperature and the current; a control module configured to control the compressor to adjust the load at the load adjustment speed.
In some embodiments, the control device for an air conditioner includes a processor and a memory storing program instructions. The processor is configured to execute the control method for the air conditioner described above when executing the program instructions
In some embodiments, the air conditioner includes the control device for an air conditioner described above.
The control method and the control device for the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
and jointly determining the load regulation speed of the compressor by combining the temperature of inlet and outlet water of the air conditioner and the current of the compressor, and controlling the compressor to regulate the load at the load regulation speed. Compared with the prior art, the influence of the change of the temperature of inlet and outlet water on the load regulation speed of the compressor can be weakened, and the stable operation of the air conditioning unit in the process of regulating the load is ensured.
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 in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a flowchart of a control method for an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method of determining a load regulation speed provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a method for determining a load regulation speed using a PID operation according to an embodiment of the disclosure;
FIG. 4 is a flow chart of a method of determining a load regulation speed provided by an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a control device for an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a control device for an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. 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 be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
In the embodiment of the present disclosure, the terminal device is an electronic device with a wireless connection function, and the terminal device may be in communication connection with the above intelligent household appliance device by connecting to the internet, or may be in communication connection with the above intelligent household appliance device directly by means of bluetooth, wifi, and the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built in a floating car, or any combination thereof. The mobile device may include, for example, a cell phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or the like, or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, and the like.
Fig. 1 is a flowchart of a control method for an air conditioner according to an embodiment of the present disclosure. As shown in fig. 1, an embodiment of the present disclosure provides a control method for an air conditioner, which may include:
and S11, the processor obtains the temperature of inlet and outlet water of the air conditioner and the current of a compressor of the air conditioner.
Here, the water inlet and outlet temperature may include a water inlet and outlet temperature at a current time, a water inlet and outlet temperature at a previous time, and a preset water inlet and outlet temperature. The current may include a current at a present time and a current at a previous time.
Optionally, the embodiment of the present disclosure may provide various implementation manners to obtain the water inlet and outlet temperatures of the air conditioner and the current of the compressor of the air conditioner. The following examples are given.
Under a mode, the temperature of inlet and outlet water of the air conditioner and the current of a compressor of the air conditioner can be continuously obtained under the condition that the air conditioner is determined to be started, so that the temperature and the current of the inlet and outlet water at the current moment and the temperature and the current of the inlet and outlet water at the previous moment in the control process can be accurately obtained.
Alternatively, in the case where it is determined that the air conditioner is turned on, the temperature of the inlet and outlet water of the air conditioner and the current of the compressor of the air conditioner may be periodically obtained, for example, every 5 minutes, so as to reduce the amount of data processing while maintaining dynamic control. Corresponding to the temperature and the current of the inlet and outlet water at the previous moment, namely the temperature and the current of the inlet and outlet water 5 minutes ago.
S12, the processor determines the load regulation speed of the compressor according to the temperature and current of the inlet and outlet water.
S13, the processor controls the compressor to adjust the load at the load adjustment speed.
By adopting the control method for the air conditioner, the load adjusting speed of the compressor is determined by combining the temperature of inlet and outlet water of the air conditioner and the current of the compressor, so that the compressor is controlled to adjust the load at the load adjusting speed. Therefore, the influence of the change of the temperature of inlet water and outlet water on the load regulation speed of the compressor can be weakened, and the stable operation of the air conditioning unit in the process of regulating the load is ensured.
Fig. 2 is a flow chart of a method of determining a load regulation speed provided by an embodiment of the present disclosure. Fig. 3 is a schematic diagram of a method for determining a load regulation speed by using a pid operation according to an embodiment of the present disclosure.
In FIG. 3, TSFor a predetermined temperature of the inlet and outlet water, T1The temperature of the inlet and outlet water at the present moment, p1Is a first proportional control parameter, i1Is the first productControl parameters, d1Is a first differential control parameter, K1Is a first proportional integral derivative control parameter, iSFor a predetermined rate of current change, i is the rate of current change at the present moment, p2Is the second proportional control parameter, i2Is the second integral control parameter, d2Is the second differential control parameter, K2Is the second proportional integral derivative control parameter, and S is the pulse control signal of the pulse electromagnetic valve corresponding to the control proportion.
Further, as shown in fig. 2 and 3, the processor determining the load regulation speed of the compressor according to the inlet and outlet water temperature and the current may include:
and S21, the processor determines the current change rate at the current moment according to the current at the current moment and the current at the previous moment.
Here, the processor may determine the current change rate at the present time by:
Figure BDA0003329377000000051
where I is the current change rate at the present time, I1Is the current at the present moment, I0Is the current at the previous moment, and t is the time duration between the current moment and the previous moment.
And S22, the processor obtains a current change rate difference value and a temperature difference value, wherein the current change rate difference value is a difference value between the current change rate at the current moment and a preset current change rate, and the temperature difference value is a difference value between the water inlet and outlet temperature at the current moment and a preset water inlet and outlet temperature.
Here, the preset current change rate and the preset inlet and outlet water temperature may be preset according to an operation instruction of a developer. Specifically, the developer can send out an operation instruction for setting the current change rate and the inlet and outlet water temperature through a control terminal associated with the air conditioner. The control terminal may be an air conditioner remote controller, or may be a terminal device that establishes wireless communication with an air conditioner. Optionally, the means of wireless communication may include at least one or more of Wi-Fi communication, zigbee protocol communication, and bluetooth communication.
And S23, the processor determines the load regulation speed according to the temperature difference and the current change rate difference.
Optionally, the processor determining the load regulation speed according to the temperature difference and the current change rate difference may include: the processor takes the temperature difference value as a first input parameter, and performs proportional integral derivative operation to obtain a first proportional integral derivative control parameter; the processor takes the current change rate difference value as a second input parameter, and performs proportional-integral-derivative operation to obtain a second proportional-integral-derivative control parameter; the processor determines the load regulation speed according to the first proportional-integral-derivative control parameter and the second proportional-integral-derivative control parameter. Therefore, the load adjusting speed is comprehensively controlled by utilizing the temperature difference and the current change rate difference, the condition that the air conditioner is unstable due to the fact that the load adjusting speed is controlled only by adopting the temperature difference can be avoided, the influence of the temperature change of inlet and outlet water on the load adjusting speed of the compressor is weakened, and the stable operation of the air conditioning unit in the process of adjusting the load is ensured. And moreover, the proportional integral derivative control method is adopted, so that the load of the compressor can be quickly, stably and accurately adjusted, and a good effect is achieved.
In summary, by using the method for determining the load adjusting speed provided by the embodiment of the disclosure, the load adjusting speed can be determined by combining the temperature difference and the current change rate difference, and the compressor is subsequently controlled to adjust the load according to the load adjusting speed, so that the unit is ensured to stably operate in the load adjusting process.
Fig. 4 is a flow chart of a method of determining a load regulation speed provided by an embodiment of the present disclosure. Further, referring to fig. 4, the determining the load regulation speed by the processor according to the first pid control parameter and the second pid control parameter may include:
s41, the processor determines a state of change in the load demand of the air conditioner.
Optionally, the processor determines the changing state of the load demand of the air conditioner, and may include: under the condition that the change rate of the water inlet temperature at the current moment is smaller than or equal to a first change rate threshold value and/or the change rate of the current at the current moment is smaller than or equal to a second change rate threshold value, the processor determines that the change state is stable change; and under the condition that the change rate of the inlet water temperature at the current moment is larger than a first change rate threshold value and/or the change rate of the current at the current moment is larger than a second change rate threshold value, the processor determines that the change state is changed violently. When the load demand of the air conditioner is changed violently, the cold quantity of the air conditioner cannot be adjusted in time, and the water inlet temperature is changed greatly. In order to stabilize the inlet water temperature, the compressor will adjust the load quickly, resulting in a drastic change in the compressor current. Therefore, the change state of the load demand of the air conditioner can be accurately judged by detecting the change rate of the inlet water temperature and/or the change rate of the current.
Here, the processor may determine the incoming water temperature change rate at the current time by:
Figure BDA0003329377000000061
wherein T is the inlet water temperature change rate at the current moment, T1Is the temperature of the incoming water at the present moment, T0The water inlet temperature at the previous moment is shown, and t is the time length between the current moment and the previous moment.
Optionally, the first change rate threshold may have a value ranging from 0.1 ℃/s to 1 ℃/s.
Optionally, the value range of the second change rate threshold may be 1.0A/s to 1.5A/s.
And S42, the processor adjusts the control proportion between the first proportional integral derivative control parameter and the second proportional integral derivative control parameter according to the change state.
Optionally, the processor adjusts the control ratio between the first proportional-integral-derivative control parameter and the second proportional-integral-derivative control parameter according to the change state, and may include: under the condition that the change state is stable change, the processor increases the control proportion; in the case where the change state is a drastic change, the processor decreases the control ratio.
Here, increasing the control ratio may be embodied as increasing the first proportional-integral-derivative control parameter and/or decreasing the second proportional-integral-derivative control parameter. The reduction of the control ratio may be embodied as a reduction of the first proportional-integral-derivative control parameter and/or an increase of the second proportional-integral-derivative control parameter.
When the load demand of the air conditioner is changed dramatically, the temperature of inlet and outlet water is changed dramatically. At the moment, the control proportion is reduced, namely the first proportional integral derivative control parameter is reduced, and/or the second proportional integral derivative control parameter is increased, so that the load regulation speed of the compressor can be controlled in a strengthening mode by using the change of the current of the compressor, the influence of the change of the temperature of inlet and outlet water on the load regulation speed of the compressor is weakened, and the stable operation of the air conditioning unit in the process of regulating the load is ensured. When the load demand of the air conditioner is changed stably, the temperature of inlet and outlet water is changed stably. At the moment, the control proportion is increased, namely the first proportional integral derivative control parameter is increased, and/or the second proportional integral derivative control parameter is reduced, so that the load adjusting speed of the compressor can be controlled in an enhanced mode by utilizing the change of the temperature of inlet water and outlet water, the load of the compressor can be adjusted rapidly, the load requirement of the air conditioner can meet the user requirement rapidly, and the use experience of a user is guaranteed.
And S43, the processor determines the pulse control signal of the pulse electromagnetic valve corresponding to the control proportion.
In practical application, the control proportion between the first proportional integral derivative control parameter and the second proportional integral derivative control parameter is set to be 0.4: for example, 0.6, the processor determines the pulse control signal of the pulse electromagnetic valve corresponding to the control ratio, which may be embodied as:
S＝0.4×K1+0.6×K2
wherein S is a pulse control signal, K1Is a first proportional integral derivative control parameter, K2Is a second pid control parameter.
Further, in a case where the load demand of the air conditioner is continuously kept stable and the compressor is fully loaded, the control ratio between the first pid control parameter and the second pid control parameter may be 1: 0.
and S44, the processor determines the load regulation speed according to the pulse control signal.
Optionally, the processor determines the load regulation speed according to the pulse control signal, and may include: the processor determines the pulse frequency corresponding to the pulse control signal according to a preset incidence relation; the processor takes the value of the pulse frequency as the value of the load regulation speed; the preset correlation is the correlation between the pulse control signals and the pulse frequency corresponding to different control proportions. Because the pulse electromagnetic valve is electrified in a pulse mode, the electrifying time of the pulse electromagnetic valve can be controlled by adjusting the pulse frequency of the pulse control signal, and the load regulation speed is intelligently controlled.
As an example, the preset association relationship between the pulse control signals and the pulse frequencies corresponding to different control ratios in the embodiment of the present disclosure may be as shown in table 3-1.
Pulse control signal Frequency of pulses
S1 f1
S2 f2
S3 f3
S4 f4
TABLE 3-1
In the preset association relationship, the pulse frequency and the pulse control signal are in positive correlation. Namely, the stronger the pulse control signal is, the higher the pulse frequency is; the weaker the pulse control signal, the lower the pulse frequency.
In summary, according to the method for determining the load regulation speed provided by the embodiment of the disclosure, since the load demand of the air conditioner affects the temperature of the inlet and outlet water, thereby affecting the load change of the compressor, the control ratio between the temperature difference and the current change rate difference is adjusted according to the change state of the load demand of the air conditioner, the influence of the change of the temperature of the inlet and outlet water on the load regulation speed of the compressor can be weakened, and the stable operation of the air conditioning unit in the process of regulating the load can be ensured.
Fig. 5 is a schematic diagram of a control device for an air conditioner according to an embodiment of the present disclosure. As shown in fig. 5, an embodiment of the present disclosure provides a control apparatus for an air conditioner, including an obtaining module 51, a determining module 52, and a control module 53. The obtaining module 51 is configured to obtain the temperature of inlet and outlet water of the air conditioner and the current of a compressor of the air conditioner; the determination module 52 is configured to determine a load regulation speed of the compressor based on the inlet and outlet water temperatures and the current; the control module 53 is configured to control the compressor to adjust the load at the load adjustment speed.
By adopting the control device for the air conditioner, the influence of the change of the temperature of inlet and outlet water on the load regulation speed of the compressor can be weakened through the cooperation of the acquisition module, the determination module and the control module, and the stable operation of the air conditioning unit in the process of regulating the load is ensured.
Fig. 6 is a schematic diagram of a control device for an air conditioner according to an embodiment of the present disclosure. As shown in fig. 6, an embodiment of the present disclosure provides a control device for an air conditioner, including a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the control method for the air conditioner of the above-described embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for the air conditioner in the above-described embodiments.
The memory 101 may 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; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the control device for the air conditioner.
The disclosed embodiments provide a storage medium storing computer-executable instructions configured to perform the above-described control method for an air conditioner.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify 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. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "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, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would 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 may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart 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 disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A control method for an air conditioner, characterized by comprising:
acquiring the temperature of inlet and outlet water of an air conditioner and the current of a compressor of the air conditioner;
determining a load regulation speed of the compressor according to the inlet and outlet water temperature and the current;
controlling the compressor to adjust the load at the load adjustment speed.
2. The control method of claim 1, wherein the inlet and outlet water temperatures include a current inlet and outlet water temperature at a present time and a preset inlet and outlet water temperature, the current includes a current at the present time and a current at a previous time, and the determining the load regulation speed of the compressor according to the inlet and outlet water temperatures and the current comprises:
determining the current change rate of the current moment according to the current of the current moment and the current of the previous moment;
obtaining a current change rate difference value and a temperature difference value, wherein the current change rate difference value is a difference value between the current change rate at the current moment and a preset current change rate, and the temperature difference value is a difference value between the water inlet and outlet temperature at the current moment and the preset water inlet and outlet temperature;
and determining the load regulation speed according to the temperature difference and the current change rate difference.
3. The control method of claim 2, wherein said determining the load regulation speed based on the temperature difference and the current rate of change difference comprises:
taking the temperature difference value as a first input parameter, and performing proportional integral derivative operation to obtain a first proportional integral derivative control parameter;
taking the current change rate difference value as a second input parameter, and performing proportional-integral-derivative operation to obtain a second proportional-integral-derivative control parameter;
and determining the load regulation speed according to the first proportional integral derivative control parameter and the second proportional integral derivative control parameter.
4. The control method of claim 3, wherein the compressor includes a pulse solenoid valve for adjusting a load, and the determining the load adjustment speed according to the first proportional-integral-derivative control parameter and the second proportional-integral-derivative control parameter includes:
determining a change state of a load demand of the air conditioner;
adjusting the control proportion between the first proportional integral derivative control parameter and the second proportional integral derivative control parameter according to the change state;
determining a pulse control signal of the pulse electromagnetic valve corresponding to the control proportion;
and determining the load regulation speed according to the pulse control signal.
5. The control method according to claim 4, wherein the determining the state of change in the load demand of the air conditioner includes:
determining that the change state is stable change under the condition that the change rate of the water inlet temperature at the current moment is less than or equal to a first change rate threshold value and/or the change rate of the current at the current moment is less than or equal to a second change rate threshold value;
and determining that the change state is a violent change under the condition that the change rate of the water inlet temperature at the current moment is greater than a first change rate threshold value and/or the change rate of the current at the current moment is greater than a second change rate threshold value.
6. The control method according to claim 4, wherein the adjusting the control proportion between the first pid control parameter and the second pid control parameter according to the change state includes:
increasing the control ratio when the change state is a stable change;
and reducing the control ratio when the change state is a violent change.
7. The control method of claim 4, wherein said determining the load regulation speed based on the pulsed control signal comprises:
determining a pulse frequency corresponding to the pulse control signal according to a preset incidence relation;
taking the value of the pulse frequency as the value of the load regulation speed;
the preset correlation is the correlation between the pulse control signals and the pulse frequency corresponding to different control proportions.
8. A control device for an air conditioner, characterized by comprising:
the device comprises an obtaining module, a control module and a control module, wherein the obtaining module is configured to obtain the temperature of inlet and outlet water of an air conditioner and the current of a compressor of the air conditioner;
a determination module configured to determine a load regulation speed of the compressor based on the inlet and outlet water temperatures and the current;
a control module configured to control the compressor to adjust a load at the load adjustment speed.
9. A control device for an air conditioner comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for an air conditioner according to any one of claims 1 to 7 when executing the program instructions.
10. An air conditioner characterized by comprising the control device for an air conditioner according to claim 8 or 9.
CN202111275777.5A 2021-10-29 2021-10-29 Control method and control device for air conditioner and air conditioner Active CN113959056B (en)

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US5203179A (en) * 1992-03-04 1993-04-20 Ecoair Corporation Control system for an air conditioning/refrigeration system
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CN102705960A (en) * 2012-07-04 2012-10-03 江苏劳特斯机电设备工程有限公司 Intelligent energy output control method for compressor of water source heat pump machine set
CN104236023A (en) * 2014-10-16 2014-12-24 珠海格力电器股份有限公司 Load control method and device
CN104566837A (en) * 2015-02-02 2015-04-29 珠海格力电器股份有限公司 Air conditioning unit loading control method and system
CN109237712A (en) * 2018-09-25 2019-01-18 珠海格力电器股份有限公司 Multimode unit temperature control method of water
CN113137701A (en) * 2021-05-14 2021-07-20 青岛海尔空调电子有限公司 Method and device for air conditioner control and air conditioner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663942A (en) * 1984-07-04 1987-05-12 Kabushiki Kaisha Toshiba Air conditioner
US5203179A (en) * 1992-03-04 1993-04-20 Ecoair Corporation Control system for an air conditioning/refrigeration system
CN101865515A (en) * 2010-05-26 2010-10-20 广东欧科空调制冷有限公司 Air conditioning unit for controlling system load by current variation
CN102705960A (en) * 2012-07-04 2012-10-03 江苏劳特斯机电设备工程有限公司 Intelligent energy output control method for compressor of water source heat pump machine set
CN104236023A (en) * 2014-10-16 2014-12-24 珠海格力电器股份有限公司 Load control method and device
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CN113137701A (en) * 2021-05-14 2021-07-20 青岛海尔空调电子有限公司 Method and device for air conditioner control and air conditioner

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