CN114543327A - Method and device for determining opening degree of expansion valve, air conditioner and storage medium - Google Patents
Method and device for determining opening degree of expansion valve, air conditioner and storage medium Download PDFInfo
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- CN114543327A CN114543327A CN202210048294.XA CN202210048294A CN114543327A CN 114543327 A CN114543327 A CN 114543327A CN 202210048294 A CN202210048294 A CN 202210048294A CN 114543327 A CN114543327 A CN 114543327A
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- expansion valve
- opening degree
- condenser
- determining
- variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for determining the opening of an expansion valve, which comprises the following steps: obtaining heat discharged by the condenser; calculating the variation of the heat discharged by the condenser according to the heat value; and determining the opening degree of the expansion valve according to the variation. The heat discharged from the condenser in the air conditioner is detected to obtain the variation of the heat discharged from the condenser, and the opening degree of the expansion valve can be determined according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, so that the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, the opening degree of the set expansion valve is in accordance with the actual condition, and the accuracy is improved. The application also discloses a device for determining the opening degree of the expansion valve and an air conditioner storage medium.
Description
Technical Field
The present invention relates to the field of intelligent household electrical appliance technologies, and for example, to a method and an apparatus for determining an opening degree of an expansion valve, an air conditioner, and a storage medium.
Background
The expansion valve is used as a throttling element in the air conditioner and plays a role in controlling the flow of the refrigerant. It is now common practice for air conditioner manufacturers to set a fixed initial opening or range for the expansion valve. Thus, the expansion valve is difficult to adjust the opening degree according to the actual application condition, and is difficult to cope with different actual conditions, and the reliability of the operation of the air conditioner is not high.
There is a method for determining an opening of an expansion valve, comprising: acquiring an initial opening degree of an expansion valve when the air conditioner is powered on and operated; acquiring operation parameters when the air conditioner operates stably; acquiring the stable opening degree of the expansion valve when the air conditioner operates stably; determining a refrigerant charge level of the air conditioner as a function of the operating parameter; and adjusting the initial opening degree according to the refrigerant charging grade and the stable opening degree to obtain an initial opening degree adjustment value, so that the initial opening degree of the expansion valve at the next starting is the initial opening degree adjustment value.
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: although the opening degree of the expansion valve can be set according to actual conditions, the calculation process involves numerous parameters, so that the determination process of the opening degree of the expansion valve is too complicated.
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 determining the opening degree of an expansion valve, an air conditioner and a storage medium, so as to simplify the process of automatically determining the opening degree of the expansion valve.
In some embodiments, the method comprises: obtaining heat discharged by the condenser; calculating the variation of the heat discharged by the condenser according to the heat value; and determining the opening degree of the expansion valve according to the variation.
Optionally, determining the opening degree of the expansion valve according to the variation comprises: when the variation is within a preset range, determining the opening of the expansion valve as an initial opening; and when the variation exceeds the preset range, adjusting the opening of the expansion valve according to the variation.
Optionally, adjusting the opening degree of the expansion valve according to the amount of change includes: controlling the opening degree of the expansion valve to increase under the condition that the variation is larger than 0; and controlling the opening degree of the expansion valve to be reduced when the variation is less than 0.
Optionally, the preset range is [ - α, α ]; wherein α ═ 1% × Qc; where Qc is a reference value of the heat discharged from the condenser.
Optionally, the adjusting the opening of the expansion valve according to the change amount includes: calculating an adjusting value n of the opening of the expansion valve, which is k multiplied by delta Q; wherein, Δ Q is the variation, and k is a preset adjustment coefficient.
Optionally, the calculating the variation of the heat discharged from the condenser according to the actual value includes: obtaining a reference value Qc of heat discharged by the condenser; calculating the variation Δ Q ═ Q-Qc; where Q is the actual value of the heat rejected by the condenser.
Optionally, the obtaining an actual value of heat rejected by the condenser comprises: the heat rejected by the condenser is periodically obtained.
In some embodiments, the apparatus comprises a processor and a memory storing program instructions, the processor being configured, upon execution of the program instructions, to perform the method for determining an expansion valve opening degree described above.
In some embodiments, the air conditioner includes the above-described means for determining the opening degree of the expansion valve.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for determining an expansion valve opening degree described above.
The method and the device for determining the opening of the expansion valve, the air conditioner and the storage medium provided by the embodiment of the disclosure can achieve the following technical effects:
the heat quantity discharged from the condenser in the air conditioner is detected to obtain the variation of the heat quantity discharged from the condenser, and the opening degree of the expansion valve can be determined according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, and the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, the opening degree of the set expansion valve is in accordance with the actual condition, and the accuracy is improved.
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 schematic diagram of a system environment for a method of determining an opening of an expansion valve;
FIG. 2 is a schematic diagram of a method for determining an opening degree of an expansion valve provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another method for determining an opening degree of an expansion valve provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for determining an opening degree of an expansion valve provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another method for determining an opening degree of an expansion valve provided by an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an apparatus for determining an opening of an expansion valve according to an embodiment of the 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.
FIG. 1 is a schematic diagram of a system environment in which embodiments of the present disclosure provide a method for determining an opening of an expansion valve.
As shown in fig. 1, the system includes a heat detecting device 11 and an air conditioner 12. The heat detecting device 11 is configured to detect an actual value of the condenser discharge in real time and transmit the actual value to the air conditioner 12. The air conditioner 12 is configured to receive the actual value and determine the opening degree of the expansion valve according to the actual value.
Fig. 2 is a method for determining an opening degree of an expansion valve according to an embodiment of the present disclosure, where the method for determining the opening degree of the expansion valve may be performed in an air conditioner or a server, such as a cloud platform in communication with the air conditioner. In the embodiments of the present disclosure, the present solution is explained with a processor of an air conditioner as an execution subject.
As shown in connection with fig. 2, the method for determining the opening degree of the expansion valve includes:
s201, the processor obtains an actual value of heat discharged by the condenser.
Wherein the actual value is detected by the heat detecting means and sent to a processor of the air conditioner.
S202, the processor calculates the variation of the heat discharged by the condenser according to the actual value.
S203, the processor determines the opening degree of the expansion valve according to the variation.
By adopting the method for determining the opening degree of the expansion valve provided by the embodiment of the disclosure, the following technical effects can be realized: the method can obtain the variation of the heat discharged by the condenser by detecting the heat discharged by the condenser in the air conditioner, and can determine the opening degree of the expansion valve according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, so that the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, the opening degree of the set expansion valve is in accordance with the actual condition, and the accuracy is improved.
Under the condition of constant compressor power, the power of the outdoor fan is in direct proportion to the heat discharged by the condenser. Under the condition that the power of the outdoor fan is constant, the power of the compressor and the heat discharged by the condenser are in a direct proportion relation. Therefore, during the operation of the air conditioner, the variation of the compressor and the outdoor fan can be converted into the variation of the heat discharged by the condenser. I.e., changes in the heat rejected by the condenser, can reflect changes in the compressor and outdoor fan power. Therefore, the opening degree of the expansion valve can be determined based on the detected amount of heat discharged from the condenser.
Alternatively, the actual value is the total heat rejected by the condensers in the time interval Δ t 1. The time interval may be 10 seconds. Therefore, a relatively accurate actual value can be obtained, and the phenomenon that the deviation of the detected instantaneous actual value is overlarge due to uneven heat emission is avoided.
Optionally, the processor obtaining an actual value of heat rejected by the condenser comprises: the actual value of the heat rejected by the condenser is obtained periodically. I.e. a time interval at 2 between two obtaining of the actual value of the heat rejected by the condenser. More specifically, the heat detecting means may detect the actual value once at the time interval Δ t2 and send the actual value to the air conditioner. Alternatively, the heat detector may continuously detect the amount of heat discharged from the condenser and send the actual value to the air conditioner at time intervals Δ t 2. Therefore, a time interval is ensured between two times of obtaining the actual value discharged by the condenser, and the situation that two adjusting values exist simultaneously and further the adjusting logic is disordered due to the fact that a new adjusting value is calculated in the adjusting process of the expansion valve can be avoided. Too short time interval between two adjustments can be avoided, and the opening of the expansion valve can be adjusted too frequently.
Here, the setting of the above-described time interval Δ t1 and time interval Δ t2 is specifically described by way of example. When the time interval Δ t1 is set to 10 seconds and the time interval Δ t2 is set to 1 minute, the heat amount detection device detects the total amount of heat discharged from the condenser within 10 seconds, and transmits the value of the amount of heat as an actual value to the processor of the air conditioner. The time interval between two transmissions of the actual value is one minute. It is also understood that there is a 1 minute time interval between the two times the calorimetric measurements are initiated.
Fig. 3 is a method for determining an opening degree of an expansion valve according to an embodiment of the present disclosure, where the method for determining the opening degree of the expansion valve may be performed in an air conditioner or a server, such as a cloud platform in communication with the air conditioner. In the embodiments of the present disclosure, the present solution is explained with a processor of an air conditioner as an execution subject.
Referring to fig. 3, the method for determining the opening of the expansion valve includes:
s301, the processor obtains an actual value of the heat discharged by the condenser.
And S302, calculating the variation of the heat discharged by the condenser according to the actual value by the processor.
And S303, when the variation is within a preset range, the processor determines the opening of the expansion valve as the initial opening.
The initial opening may be an opening of an expansion valve preset when the air conditioner leaves a factory, or may be an opening of an expansion valve set by a user.
And S304, when the variation exceeds a preset range, the processor adjusts the opening of the expansion valve according to the variation.
By adopting the method for determining the opening degree of the expansion valve provided by the embodiment of the disclosure, the following technical effects can be realized: the method can obtain the variation of the heat discharged by the condenser by detecting the heat discharged by the condenser in the air conditioner, and can determine the opening degree of the expansion valve according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, and the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, the opening degree of the set expansion valve is in accordance with the actual condition, and the accuracy is improved.
Optionally, the preset range is [ - α, α ]; and α is 1% × Qc. When the variation of the heat quantity is in the preset range, the variation of the power of the compressor is small, and the opening of the expansion valve does not need to be adjusted in a reasonable range. Thus, the number of operations for adjusting the opening degree of the expansion valve can be reduced while ensuring the normal operation of the air conditioner.
Where Qc is a reference value of the heat discharged from the condenser. Specifically, the value of the reference value corresponds to the value of the actual value. I.e. the value of the total heat rejected by the condensers in the time interval Δ t1, the reference value is likewise the value of the total heat rejected by the condensers in the time interval Δ t 1. The actual value is measured under actual operating conditions and the reference value is measured under standard operating conditions. The standard operating condition may be an operating condition in which the indoor temperature reaches 26 ℃ and the operation is smooth.
Further, the reference value is provided in a plurality of numbers, including a reference value under a cooling condition and a reference value under a heating condition. Therefore, the value of the reference value is further refined, so that the value of the reference value is more accurate.
Optionally, the processor adjusting the opening degree of the expansion valve according to the change amount comprises: in the case where the amount of change is larger than 0, the processor controls the expansion valve opening degree to increase. In the case where the amount of change is less than 0, the processor controls the expansion valve opening degree to decrease. The variable quantity is greater than 0, namely the heat discharged by the condenser is increased, the power of the compressor is increased, at the moment, the opening degree of the expansion valve needs to be increased to increase the flow, so that the change of the opening degree of the expansion valve is consistent with the change of the frequency of the compressor, and the actual requirement of a user is further met. When the variation is less than 0, the heat discharged by the condenser is reduced, the power of the compressor is reduced, and the opening of the expansion valve is reduced to reduce the flow of the refrigerant, so that the opening of the expansion valve is consistent with the power of the compressor, and the actual requirement of a user is met.
As shown in fig. 4, the method for determining the opening degree of the expansion valve includes:
s401, the processor obtains an actual value of the heat discharged by the condenser.
S402, the processor calculates the variation of the heat discharged by the condenser according to the actual value.
And S403, when the variation is within a preset range, the processor determines the opening degree of the expansion valve as the initial opening degree.
And S404, when the variation exceeds a preset range, the processor calculates an adjusting value n of the expansion valve opening degree to be k multiplied by delta Q, and adjusts the expansion valve opening degree according to the adjusting value.
Wherein, the delta Q is the variation of the heat discharged by the condenser; k is a preset adjustment coefficient.
By adopting the method for determining the opening degree of the expansion valve provided by the embodiment of the disclosure, the following technical effects can be realized: the method can obtain the variation of the heat discharged by the condenser by detecting the heat discharged by the condenser in the air conditioner, and can determine the opening degree of the expansion valve according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, so that the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, and the adjusting value of the opening degree of the expansion valve is directly calculated through the detected heat, so that the set opening degree of the expansion valve is consistent with the actual condition, and the accuracy is improved.
Alternatively, k is a preset adjustment coefficient, that is, an adjustment value of the opening degree of the expansion valve corresponding to the amount of change in the amount of heat per joule. The coefficient can be obtained through experiments in advance, and is stored for being called in the actual operation process after the optimal coefficient is obtained.
Fig. 5 is a method for determining an opening degree of an expansion valve according to an embodiment of the present disclosure, where the method for determining the opening degree of the expansion valve may be performed in an air conditioner or a server, such as a cloud platform in communication with the air conditioner. In the embodiments of the present disclosure, the present solution is explained with a processor of an air conditioner as an execution subject.
Referring to fig. 5, the method for determining the opening of the expansion valve includes:
s501, the processor obtains an actual value Q of heat discharged by the condenser.
S502, the processor obtains a reference value Qc of the heat discharged by the condenser.
The reference value is provided in plural corresponding to different working conditions. For example, under the refrigeration working condition, the reference value of the heat discharged by the condenser is Qc; in the heating condition, the reference value of the heat discharged by the condenser is Qh.
Here, the reference value is a detected value of the heat discharged from the condenser in a state where the air conditioner is in a steady operation state after the indoor temperature reaches 26 ℃. More specifically, if the actual value Q is the total heat output of the condensers in the time interval Δ t1, the reference value should also be the total heat output of the condensers in the time interval Δ t 1.
S503, the processor calculates the variation Δ Q — Q.
And S504, the processor determines the opening degree of the expansion valve according to the variable quantity.
By adopting the method for determining the opening degree of the expansion valve provided by the embodiment of the disclosure, the following technical effects can be realized: the method can obtain the variation of the heat discharged by the condenser by detecting the heat discharged by the condenser in the air conditioner, and can determine the opening degree of the expansion valve according to the variation. In the process, the opening degree of the expansion valve can be obtained only by obtaining the detection value of the heat discharged by the condenser, so that the process of determining the opening degree of the expansion valve is greatly simplified. In addition, because the heat discharged by the condenser is actually measured in the operation process of the air conditioner, the actual operation condition can be reflected, the opening degree of the set expansion valve is in accordance with the actual condition, and the accuracy is improved.
Optionally, the processor obtaining a reference value Qc of heat rejected by the condenser comprises: the processor obtains the current working condition of the air conditioner and calls a reference value which is the same as the current working condition according to the working condition.
As shown in fig. 6, an embodiment of the present disclosure provides an apparatus for determining an opening degree of an expansion valve, which includes a processor (processor)60 and a memory (memory) 61. Optionally, the apparatus may further include a Communication Interface (Communication Interface)62 and a bus 63. The processor 60, the communication interface 62 and the memory 61 may communicate with each other through a bus 63. Communication interface 62 may be used for information transfer. The processor 60 may invoke logic instructions in the memory 61 to perform the method for determining the expansion valve opening degree of the above-described embodiment.
Furthermore, the logic instructions in the memory 61 may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 61 is a storage medium and can 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 60 executes functional applications and data processing, i.e. implements the method for determining the opening degree of the expansion valve in the above-described embodiments, by executing program instructions/modules stored in the memory 61.
The memory 61 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 61 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 device for determining the opening degree of the expansion valve.
Embodiments of the present disclosure provide a storage medium storing computer-executable instructions configured to perform the above-described method for determining an opening degree of an expansion valve.
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 additional identical elements in the process, method or apparatus comprising 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 simplicity of description, the specific working processes of the above-described systems, apparatuses, and units 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 only one type of logical functional division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be 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 position, or may be distributed on multiple 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 method for determining an opening of an expansion valve, comprising:
obtaining an actual value of heat rejected by the condenser;
calculating the variation of the heat discharged by the condenser according to the actual value;
and determining the opening degree of the expansion valve according to the variation.
2. The method of claim 1, wherein determining an expansion valve opening from the amount of change comprises:
when the variation is within a preset range, determining the opening of the expansion valve as an initial opening;
and when the variation exceeds a preset range, adjusting the opening of the expansion valve according to the variation.
3. The method of claim 2, wherein said adjusting an expansion valve opening degree according to the amount of change comprises:
controlling the opening degree of the expansion valve to increase under the condition that the variation is larger than 0;
and controlling the opening degree of the expansion valve to be reduced when the variation is less than 0.
4. The method of claim 2, wherein the predetermined range is [ - α, α ]; wherein α is 1% × Qc; where Qc is a reference value of the heat discharged from the condenser.
5. The method according to claim 2, wherein the adjusting the expansion valve opening according to the change amount comprises:
calculating an adjusting value n of the opening of the expansion valve, which is k multiplied by delta Q;
wherein, Δ Q is the variation, and k is a preset adjustment coefficient.
6. The method according to any one of claims 1 to 5, wherein said calculating an amount of change in heat rejected by the condenser from said actual value comprises:
obtaining a reference value Qc of heat discharged by the condenser;
calculating the variation Δ Q ═ Q-Qc;
where Q is the actual value of the heat rejected by the condenser.
7. The method of any one of claims 1 to 5, wherein said obtaining an actual value of heat rejected by the condenser comprises: the heat rejected by the condenser is periodically obtained.
8. An apparatus for determining an opening degree of a expansion valve, comprising a processor and a memory having stored thereon program instructions, characterized in that the processor is configured to carry out the method for determining an opening degree of a expansion valve according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioner characterized by comprising the apparatus for determining an opening degree of an expansion valve according to claim 8.
10. A storage medium storing program instructions which, when executed, perform a method for determining an opening of an expansion valve according to any one of claims 1 to 7.
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| CN202210048294.XA CN114543327A (en) | 2022-01-17 | 2022-01-17 | Method and device for determining opening degree of expansion valve, air conditioner and storage medium |
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| CN202210048294.XA CN114543327A (en) | 2022-01-17 | 2022-01-17 | Method and device for determining opening degree of expansion valve, air conditioner and storage medium |
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Citations (11)
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