CN113357803B - Method and device for controlling electronic expansion valve of air conditioner and air conditioner - Google Patents

Method and device for controlling electronic expansion valve of air conditioner and air conditioner Download PDF

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Publication number
CN113357803B
CN113357803B CN202110584426.6A CN202110584426A CN113357803B CN 113357803 B CN113357803 B CN 113357803B CN 202110584426 A CN202110584426 A CN 202110584426A CN 113357803 B CN113357803 B CN 113357803B
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Prior art keywords
air conditioner
electronic expansion
expansion valve
working condition
valve
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CN113357803A (en
Inventor
谭强
张飞
鞠龙家
陈建龙
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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
    • F24F11/70—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
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners, and discloses a method for controlling an electronic expansion valve of an air conditioner, which comprises the following steps: acquiring the exhaust temperature of the air conditioner within a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner. The air conditioner working condition is obtained according to the exhaust temperature of the air conditioner, and the electronic expansion valve of the air conditioner is controlled according to the air conditioner working condition, so that the electronic expansion valve can be adjusted to different air conditioner working conditions, and the working state of an air conditioner compressor is matched with different air conditioner working conditions. The application also discloses a device for controlling the electronic expansion valve of the air conditioner and the air conditioner.

Description

Method and device for controlling electronic expansion valve of air conditioner and air conditioner
Technical Field
The present application relates to the field of air conditioner technology, and for example, to a method and an apparatus for controlling an electronic expansion valve of an air conditioner, and an air conditioner.
Background
At present, the working frequency of a compressor of an inverter air conditioner is constantly changed according to the indoor and outdoor ambient temperature, after the working frequency of the compressor of the air conditioner is changed, the refrigerating capacity flowing through a pipeline is also changed, and the compressor of the air conditioner is adjusted by an electronic expansion valve so as to adapt to the changed working state of the compressor of the air conditioner and realize the inverter control of the operation of the air conditioner.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the prior art follows a fixed control mechanism when adjusting an electronic expansion valve of an air conditioner and cannot adapt to different working conditions of the air conditioner.
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 method and a device for controlling an electronic expansion valve of an air conditioner and the air conditioner, so that the electronic expansion valve can be adjusted to adapt to different working conditions of the air conditioner.
In some embodiments, the method for controlling an electronic expansion valve of an air conditioner includes: acquiring the exhaust temperature of the air conditioner within a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner.
In some embodiments, the apparatus for controlling an electronic expansion valve of an air conditioner includes: a processor and a memory storing program instructions, the processor being configured to, upon execution of the program instructions, perform the method for controlling an electronic expansion valve of an air conditioner as described above.
In some embodiments, the air conditioner includes the above-mentioned device for controlling an electronic expansion valve of the air conditioner.
The method and the device for controlling the electronic expansion valve of the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects: the exhaust temperature of the air conditioner can be acquired within a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner. The exhaust temperature according to the air conditioner acquires the air conditioner operating mode, controls the electronic expansion valve of air conditioner according to the air conditioner operating mode to the messenger can adapt to different air conditioner operating modes to the regulation of electronic expansion valve, makes the operating condition of air conditioner compressor more match with different air conditioner operating modes.
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 in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:
FIG. 1 is a schematic diagram of a method for controlling an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an apparatus for controlling an electronic expansion valve of 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 as appropriate for the embodiments of the disclosure described herein. 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. E.g., a and/or B, represents: a or B, or A and B.
Referring to fig. 1, an embodiment of the present disclosure provides a method for controlling an electronic expansion valve of an air conditioner, including:
step S101, acquiring the exhaust temperature of the air conditioner in a first preset time period after the air conditioner is started;
step S102, comparing the exhaust temperature with a preset temperature threshold value;
step S103, determining the working condition of the air conditioner according to the comparison result;
and step S104, controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner.
By adopting the method for controlling the electronic expansion valve of the air conditioner, the exhaust temperature of the air conditioner can be obtained in a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner. The air conditioner working condition is obtained according to the exhaust temperature of the air conditioner, and the electronic expansion valve of the air conditioner is controlled according to the air conditioner working condition, so that the electronic expansion valve can be adjusted to different air conditioner working conditions, and the working state of an air conditioner compressor is matched with different air conditioner working conditions.
Optionally, determining the operating condition of the air conditioner according to the comparison result includes: determining the working condition of the air conditioner to be a high-load working condition under the condition that the exhaust temperature of the air conditioner is greater than a temperature threshold value; or determining the working condition of the air conditioner to be a normal working condition under the condition that the exhaust temperature of the air conditioner is less than or equal to the temperature threshold value. The working condition of the air conditioner is determined according to the comparison result of the exhaust temperature and the preset temperature threshold, and the electronic expansion valve of the air conditioner is controlled according to the working condition of the air conditioner, so that the electronic expansion valve can be adjusted to different working conditions of the air conditioner, and the working state of the compressor of the air conditioner is matched with different working conditions of the air conditioner.
Optionally, controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner includes: under the condition that the working condition of the air conditioner is a high-load working condition, acquiring the actual operating frequency of a compressor of the air conditioner; acquiring a first valve opening according to the actual running frequency of the compressor of the air conditioner; adjusting the electronic expansion valve according to the first valve opening degree in a second preset time period; and after a second preset time period, carrying out PID (Proportional Integral Derivative) regulating valve control on the electronic expansion valve. Under the condition that the working condition of the air conditioner is a high-load working condition, the electronic expansion valve is adjusted according to the first valve opening degree in the second preset time period, the valve opening degree of the electronic expansion valve is increased, the load of the air conditioner is reduced, overload shutdown caused by continuous increase of the load of the air conditioner is avoided, and the electronic expansion valve can be adjusted to the high-load working condition.
Optionally, the second preset time period is greater than the first preset time period.
Alternatively, by calculating Y 1 = c × f + d, obtaining a first valve opening; wherein, Y 1 The first valve opening is defined as f is the actual running frequency of the compressor, c is more than or equal to 1 and less than or equal to 5, and d is more than or equal to 100 and less than or equal to 600.
Optionally, acquiring the first valve opening according to the actual operating frequency of the compressor of the air conditioner includes: acquiring a valve opening compensation value; and calculating by utilizing the actual operating frequency of the compressor of the air conditioner and the valve opening compensation value according to a first preset algorithm to obtain a first valve opening. According to valve opening compensation value and air conditioner compressor actual operating frequency acquire first valve opening, transfer the valve to electronic expansion valve according to first valve opening for electronic expansion valve's regulation can be adapted to the high load operating mode. The valve opening of the electronic expansion valve is increased according to the valve opening compensation value to reduce the load of the air conditioner, so that the overload shutdown of the air conditioner caused by the continuous increase of the load of the air conditioner is avoided.
Optionally by calculationY 1 = a × f + b + X, obtaining a first valve opening; wherein, Y 1 Is the first valve opening, f is the actual running frequency of the compressor, a is more than or equal to 0 and less than or equal to 3,0 and less than or equal to b and less than or equal to 500, and X is the valve opening compensation value.
Optionally, the obtaining the valve opening compensation value comprises: acquiring temperature information for representing the working condition of the air conditioner, and matching a valve opening compensation value corresponding to the temperature information in a preset data table; the data table stores a correspondence between the temperature information and the valve opening compensation value.
Optionally, the temperature information of the air conditioner working condition includes: the outer ring temperature, the exhaust temperature, the inner pipe disc temperature and the like of the working condition of the air conditioner.
In some embodiments, table 1 is an example table of data tables;
Figure BDA0003087617170000041
TABLE 1
As shown in table 1, when the outer ring temperature of the air conditioner operating condition is greater than 50 degrees, the corresponding valve opening compensation value is 30; when the air conditioner exhaust temperature is greater than 85 degrees, the corresponding valve opening compensation value is 30; when the air conditioner exhaust temperature is less than or equal to 85 degrees, the corresponding valve opening compensation value is 0; when the temperature of the coil pipe in the air conditioner is larger than 52 degrees, the corresponding valve opening compensation value is 30 degrees.
Optionally, controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner includes: and under the condition that the working condition of the air conditioner is a high-load working condition, performing PID (proportion integration differentiation) regulation valve control on the electronic expansion valve after a third preset time period so as to increase the valve opening degree of the electronic expansion valve. And after the third preset time period, PID (proportion integration differentiation) regulation valve control is carried out on the electronic expansion valve, the valve opening degree of the electronic expansion valve is increased, the load of the air conditioner is reduced, and overload shutdown caused by continuous increase of the load of the air conditioner is avoided, so that the regulation of the electronic expansion valve can adapt to a high-load working condition.
Optionally, the third preset time period is less than the second preset time period.
Optionally, controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner includes: under the condition that the working condition of the air conditioner is a normal working condition, acquiring the actual operating frequency of a compressor of the air conditioner; acquiring the opening degree of a second valve according to the actual running frequency of the compressor of the air conditioner; adjusting the electronic expansion valve according to the second valve opening degree in a second preset time period; and performing PID control on the electronic expansion valve after a second preset time period. And under the condition that the working condition of the air conditioner is a normal working condition, adjusting the valve of the electronic expansion valve according to the opening degree of the second valve in a second preset time period, and performing PID (proportion integration differentiation) valve adjustment control on the electronic expansion valve after the second preset time period so that the adjustment of the electronic expansion valve can adapt to the normal working condition.
Optionally by calculating Y 2 = a × f + b, obtain second valve opening; wherein, Y 2 And f is the actual operating frequency of the compressor, a is more than or equal to 0 and less than or equal to 3,0 and less than or equal to 500, a is less than c, and b is less than d.
Optionally, the PID control of the electronic expansion valve comprises: acquiring a difference value between the actual exhaust temperature and the target exhaust temperature of the air conditioner compressor; and performing PID control on the valve opening of the electronic expansion valve according to the difference value. And carrying out PID control on the valve opening of the electronic expansion valve according to the difference value between the actual exhaust temperature and the target exhaust temperature of the air conditioner compressor, so that the adjustment of the electronic expansion valve can adapt to all working conditions.
Alternatively, the target exhaust gas temperature is obtained by calculating T = e × f + g; wherein T is the target exhaust temperature, f is the actual operating frequency of the compressor, e is more than or equal to 0.01 and less than or equal to 2, and g is more than or equal to 50 and less than or equal to 200.
In some embodiments, when the exhaust temperature within a first preset time period, for example, 3 minutes after the air conditioner is turned on, is less than or equal to a preset temperature threshold, for example, 85 degrees, it is determined that the operating condition of the air conditioner is a normal operating condition, the actual operating frequency of the air conditioner compressor is obtained, and the second valve opening is obtained according to the actual operating frequency of the air conditioner compressor. Adjusting the electronic expansion valve according to the opening degree of the second valve within a second preset time period, such as 6 minutes, after the air conditioner is started; and after the air conditioner is started for 6 minutes, acquiring a difference value between the actual exhaust temperature of the air conditioner compressor and the target exhaust temperature, and performing PID control on the valve opening of the electronic expansion valve according to the difference value. In this way, in a second preset time period after the air conditioner is started, the electronic expansion valve is adjusted according to the opening degree of the second valve; and after the air conditioner is started for a second preset time period, carrying out PID valve adjustment on the electronic expansion valve, so that the adjustment of the electronic expansion valve can adapt to normal working conditions.
In some embodiments, when the exhaust temperature within a first preset time period, for example, 3 minutes, after the air conditioner is turned on is greater than a preset temperature threshold, for example, 85 degrees, the working condition of the air conditioner is determined to be a high-load working condition, the actual operating frequency of the air conditioner compressor is obtained, and the first valve opening is obtained by using the actual operating frequency of the air conditioner compressor according to a first preset algorithm. Adjusting the electronic expansion valve according to the opening degree of the first valve within a second preset time period, such as 6 minutes, after the air conditioner is started; and after the air conditioner is started for 6 minutes, acquiring a difference value between the actual exhaust temperature of the air conditioner compressor and the target exhaust temperature, and performing PID control on the valve opening of the electronic expansion valve according to the difference value. In this way, in a second preset time period after the air conditioner is started, the electronic expansion valve is adjusted according to the opening degree of the first valve; after the second preset time period after the air conditioner is started, PID valve adjustment is carried out on the electronic expansion valve, the initial valve opening degree and the valve opening degree in the second preset time period are improved, and therefore the system load is reduced, and the electronic expansion valve can be adjusted to be suitable for the high-load working condition.
In some embodiments, when the exhaust temperature within a first preset time period, for example, 3 minutes after the air conditioner is turned on, is greater than a preset temperature threshold, for example, 85 degrees, the operating condition of the air conditioner is determined to be a high-load operating condition, the actual operating frequency of the air conditioner compressor and the valve opening compensation value are obtained, and the first valve opening is obtained by using the actual operating frequency of the air conditioner compressor and the valve opening compensation value according to a first preset algorithm. Adjusting the electronic expansion valve according to the opening degree of the first valve within a second preset time period, such as 6 minutes, after the air conditioner is started; and after the air conditioner is started for 6 minutes, acquiring a difference value between the actual exhaust temperature of the air conditioner compressor and the target exhaust temperature, and performing PID control on the valve opening of the electronic expansion valve according to the difference value. In a second preset time period after the air conditioner is started, acquiring a first valve opening according to the actual running frequency of the compressor and the valve opening compensation value, and adjusting the electronic expansion valve according to the first valve opening; and after a second preset time period after the air conditioner is started, carrying out PID valve adjustment on the electronic expansion valve, and adjusting the electronic expansion valve to be suitable for all working conditions through different valve opening compensation values corresponding to different working conditions.
In some embodiments, when the exhaust temperature within a first preset time period, for example, 3 minutes, after the air conditioner is turned on is greater than a preset temperature threshold, for example, 85 degrees, it is determined that the air conditioner operating condition is a high load operating condition, and after a third preset time period, for example, 4 minutes, after the air conditioner is turned on, a difference value between an actual exhaust temperature of the air conditioner compressor and a target exhaust temperature is obtained, and PID control is performed on the valve opening of the electronic expansion valve according to the difference value. Therefore, the electronic expansion valve is controlled by entering the PID adjusting valve in advance, so that the opening degree of the valve is increased, the system load is reduced, and the adjustment of the electronic expansion valve can adapt to a high-load working condition.
In some embodiments, under the maximum cooling condition that the external loop temperature reaches 53 degrees or the maximum heating condition that the external loop temperature reaches 27 degrees or 24 degrees, the working condition of the air conditioner is determined to be a high-load working condition, the actual operating frequency of the air conditioner compressor is obtained, the actual operating frequency of the air conditioner compressor is utilized according to a first preset algorithm to obtain a first valve opening, the electronic expansion valve is adjusted according to the first valve opening within a second preset time period, for example, within 6 minutes after the air conditioner is started, and the electronic expansion valve is subjected to PID adjustment control after the air conditioner is started for 6 minutes. Under the maximum refrigeration condition that the outer loop temperature reaches 53 degrees or the maximum heating condition that the outer loop temperature reaches 27 degrees or 24 degrees, the load of the air conditioner in the operation process is very large, the load of the air conditioner is continuously increased by controlling the valve opening according to the normal working condition in the second preset time period, the exhaust temperature of the air conditioner is increased to more than 100 degrees in a short time, and the air conditioner is extremely easy to stop under overload. Therefore, the electronic expansion valve is adjusted according to different working conditions of the air conditioner, the risk of high-load shutdown of the air conditioner is reduced, and the safety and the reliability of the air conditioner are improved.
As shown in fig. 2, an embodiment of the present disclosure provides an apparatus for controlling an electronic expansion valve of an air conditioner, which includes a processor (processor) 200 and a memory (memory) 201. Optionally, the apparatus may also include a Communication Interface (Communication Interface) 202 and a bus 203. The processor 200, the communication interface 202 and the memory 201 can communicate with each other through the bus 203. The communication interface 202 may be used for information transfer. The processor 200 may call logic instructions in the memory 201 to execute the method for controlling the electronic expansion valve of the air conditioner according to the above embodiment.
In addition, the logic instructions in the memory 201 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 201 is used as a computer readable storage medium 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 200 executes functional applications and data processing by executing program instructions/modules stored in the memory 201, namely, implements the method for controlling the electronic expansion valve of the air conditioner in the above embodiment.
The memory 201 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. Further, the memory 201 may include a high-speed random access memory, and may also include a nonvolatile memory.
By adopting the device for controlling the electronic expansion valve of the air conditioner, the exhaust temperature of the air conditioner can be obtained in a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner. The exhaust temperature according to the air conditioner acquires the air conditioner operating mode, controls the electronic expansion valve of air conditioner according to the air conditioner operating mode to the messenger can adapt to different air conditioner operating modes to the regulation of electronic expansion valve, makes the operating condition of air conditioner compressor more match with different air conditioner operating modes.
The embodiment of the disclosure provides an air conditioner, which comprises the device for controlling the electronic expansion valve of the air conditioner. The air conditioner can acquire the exhaust temperature of the air conditioner within a first preset time period after the air conditioner is started; comparing the exhaust temperature with a preset temperature threshold; determining the working condition of the air conditioner according to the comparison result; and controlling the electronic expansion valve of the air conditioner according to the working condition of the air conditioner. The air conditioner working condition is obtained according to the exhaust temperature of the air conditioner, and the electronic expansion valve of the air conditioner is controlled according to the air conditioner working condition, so that the electronic expansion valve can be adjusted to different air conditioner working conditions, and the working state of an air conditioner compressor is matched with different air conditioner working conditions.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an electronic expansion valve of an air conditioner.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above method for controlling an electronic expansion valve of an air conditioner.
The computer-readable 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 a …" does not exclude the presence of additional 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 (9)

1. A method for controlling an electronic expansion valve of an air conditioner, comprising:
acquiring the exhaust temperature of the air conditioner within a first preset time period after the air conditioner is started;
comparing the exhaust temperature with a preset temperature threshold;
determining the working condition of the air conditioner according to the comparison result;
controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner;
the determining the working condition of the air conditioner according to the comparison result comprises the following steps: determining the working condition of the air conditioner to be a high-load working condition under the condition that the exhaust temperature of the air conditioner is greater than the temperature threshold value;
controlling an electronic expansion valve of the air conditioner according to the working condition of the air conditioner, comprising: under the condition that the working condition of the air conditioner is a high-load working condition, acquiring the actual operating frequency of a compressor of the air conditioner; acquiring a first valve opening according to the actual running frequency of the air conditioner compressor; adjusting the electronic expansion valve according to the first valve opening degree in a second preset time period; and after the second preset time period, performing PID control valve control on the electronic expansion valve.
2. The method of claim 1, wherein determining an air conditioner operating condition based on the comparison comprises:
and determining the working condition of the air conditioner to be a normal working condition under the condition that the exhaust temperature of the air conditioner is less than or equal to the temperature threshold value.
3. The method of claim 1, wherein obtaining a first valve opening based on an actual operating frequency of the air conditioner compressor comprises:
acquiring a valve opening compensation value;
and calculating by using the actual operating frequency of the air conditioner compressor and the valve opening compensation value according to a first preset algorithm to obtain a first valve opening.
4. The method of claim 3, wherein the obtaining a valve opening compensation value comprises:
acquiring temperature information for representing the working condition of an air conditioner, and matching a valve opening compensation value corresponding to the temperature information in a preset data table; the data table stores a corresponding relationship between temperature information and a valve opening compensation value.
5. The method of claim 1, wherein controlling an electronic expansion valve of an air conditioner according to the air conditioner operating condition comprises:
and performing PID (proportion integration differentiation) regulating control on the electronic expansion valve after a third preset time period under the condition that the working condition of the air conditioner is a high-load working condition.
6. The method of claim 2, wherein controlling an electronic expansion valve of an air conditioner according to the air conditioner operating condition comprises:
under the condition that the working condition of the air conditioner is a normal working condition, acquiring the actual operating frequency of a compressor of the air conditioner;
acquiring a second valve opening according to the actual running frequency of the air conditioner compressor;
adjusting the electronic expansion valve according to the second valve opening degree in the second preset time period;
and after a second preset time period, carrying out PID (proportion integration differentiation) regulation control on the electronic expansion valve.
7. The method of any of claims 1 to 6, wherein controlling the electronic expansion valve with a PID tuning valve comprises:
acquiring a difference value between an actual exhaust temperature and a target exhaust temperature of an air conditioner compressor;
and performing PID control on the valve opening of the electronic expansion valve according to the difference value.
8. An apparatus for controlling an electronic expansion valve of an air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling an electronic expansion valve of an air conditioner according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioner characterized by comprising the apparatus for controlling an electronic expansion valve of an air conditioner according to claim 8.
CN202110584426.6A 2021-05-27 2021-05-27 Method and device for controlling electronic expansion valve of air conditioner and air conditioner Active CN113357803B (en)

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