CN112556129B - 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 PDFInfo
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- CN112556129B CN112556129B CN202011437871.1A CN202011437871A CN112556129B CN 112556129 B CN112556129 B CN 112556129B CN 202011437871 A CN202011437871 A CN 202011437871A CN 112556129 B CN112556129 B CN 112556129B
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- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 6
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- 238000004590 computer program Methods 0.000 description 4
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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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Abstract
The application relates to the technical field of intelligent air conditioners and discloses a method and a device for controlling an electronic expansion valve of an air conditioner and the air conditioner. The method comprises the following steps: acquiring a current exhaust temperature value of an air conditioner, wherein the air conditioner operates in an electronic expansion valve opening reduction mode; under the condition that the current exhaust temperature value is consistent with the previous exhaust temperature value, the electronic expansion valve opening reduction mode is exited, and the current opening matched with the current exhaust temperature value is determined as the adjustment reference opening; and controlling the electronic expansion valve to operate according to the adjustment reference opening degree. Therefore, the probability of faults caused by the electronic expansion valve passing is reduced, the reliability of the electronic expansion valve is improved, and the reliability of the air conditioner is further improved.
Description
Technical Field
The application relates to the technical field of intelligent air conditioners, in particular to a method and a device for controlling an electronic expansion valve of an air conditioner and the air conditioner.
Background
Air conditioners have been widely used as a common intelligent device for adjusting the temperature and humidity of an indoor environment. Among them, the electronic expansion valve, as an important component of the air conditioner, is frequently opened, closed or opened with an adjustment of the opening degree. At present, after receiving a start-up or shut-down command sent by a remote controller or a terminal, an air conditioner closes an electronic expansion valve, and the number of closing steps is greater than an actual opening degree, for example: the opening degree of the electronic expansion valve is 480 steps, and the actual closing steps are 520 steps, so that the electronic expansion valve can be closed in place. However, such frequent over-step operation inevitably causes problems such as over-step noise and abrasion of the valve needle and the valve port, thereby causing malfunction of the electronic expansion valve.
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 as to solve the technical problem that the electronic expansion valve of the air conditioner is easy to break down.
In some embodiments, the method comprises:
acquiring a current exhaust temperature value of an air conditioner, wherein the air conditioner operates in an electronic expansion valve opening reduction mode;
under the condition that the current exhaust temperature value is consistent with the previous exhaust temperature value, the electronic expansion valve opening reduction mode is exited, and the current opening matched with the current exhaust temperature value is determined as the adjustment reference opening;
and controlling the electronic expansion valve to operate according to the adjustment reference opening degree.
In some embodiments, the apparatus comprises:
an obtaining module configured to obtain a current exhaust temperature value of an air conditioner, wherein the air conditioner is operated in an electronic expansion valve opening reduction mode;
a reference determination module configured to exit the electronic expansion valve opening reduction mode and determine a current opening matching the current exhaust temperature value as an adjustment reference opening, in a case where it is determined that the current exhaust temperature value is consistent with a previous exhaust temperature value;
and the control module is configured to control the electronic expansion valve to operate according to the adjustment reference opening degree.
In some embodiments, the apparatus for air conditioner electronic expansion valve control comprises a processor and a memory storing program instructions, the processor being configured to execute the above-described method for air conditioner electronic expansion valve control when executing the program instructions.
In some embodiments, the air conditioner comprises the device for controlling the 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:
in the process that the air conditioner operates in the electronic expansion valve opening reduction mode, the adjustment reference opening of the electronic expansion valve is determined according to the current exhaust temperature value of the air conditioner, and therefore operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, so that the corresponding reference valve opening of the air conditioner during starting or stopping is determined, and the valve is opened or closed according to the reference valve opening, so that the electronic expansion valve can be ensured to be closed in place, the probability of faults caused by the fact that the electronic expansion valve is too stepped is reduced, the reliability of the electronic expansion valve is improved, and the reliability of the air conditioner 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 flowchart 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 flow chart diagram illustrating a method for controlling an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart diagram illustrating a method for controlling an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic expansion valve control device for an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic expansion valve control device for an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic expansion valve 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 claims of the embodiments of the disclosure and in the drawings described above 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 "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more unless otherwise 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.
In the embodiment of the disclosure, when the air conditioner is started or stopped, the air conditioner can operate in an electronic expansion valve opening reduction mode, and in the process of reducing the opening of the electronic expansion valve, the adjustment reference opening of the electronic expansion valve can be determined according to the current exhaust temperature value of the air conditioner, so that the operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, and thus, the opening of the corresponding reference valve when the air conditioner is started or stopped is determined, and the valve is opened or closed according to the reference valve opening, so that the electronic expansion valve can be ensured to be closed in place, the probability of faults caused by the over-step of the electronic expansion valve is reduced, the reliability of the electronic expansion valve is improved, and further the reliability of the air conditioner is improved.
Fig. 1 is a schematic flowchart of a control method for an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 1, the process for controlling the electronic expansion valve of the air conditioner includes:
step 101: and acquiring the current exhaust temperature value of the air conditioner, wherein the air conditioner is operated in an electronic expansion valve opening reduction mode.
In the embodiment of the present disclosure, the air conditioner is operated in the electronic expansion valve opening degree reducing mode, that is, the opening degree of the electronic expansion valve of the air conditioner is gradually reduced from the maximum valve opening degree, and generally, the mechanical maximum opening degree of the electronic expansion valve may correspond to the maximum valve opening degree of the electronic expansion valve. The maximum valve opening degree of the electronic expansion valve can be determined according to the performance of the air conditioner. Of course, in some embodiments, after the electronic expansion valve operates for a period of time, the valve closing times, the part machining precision, the oil lubrication times, and the like may cause the value of the maximum valve opening degree of the electronic expansion valve to change, but the opening degree reduction mode of the electronic expansion valve is reduced from the currently corresponding maximum valve opening degree.
During operation, the electronic expansion valve is reduced from the maximum valve opening degree according to a set rule, for example: each reduction is 3, 5, or 10 steps, etc., although in some embodiments the reduction may be performed randomly.
In the electronic expansion valve opening reduction mode, not only the operation strategy of the electronic expansion valve is available, but also the following steps are included: and one or more of a compressor, an indoor fan and an outdoor fan. In some embodiments, the indoor and outdoor temperature values corresponding to the start of the electronic expansion valve opening reduction mode are first indoor and outdoor temperature values, such that in the electronic expansion valve opening reduction mode, the compressor operation frequency is a first lowest compressor frequency matching the first indoor and outdoor temperature values, the indoor fan air speed is a first preset indoor fan air speed, the outdoor fan air speed is a first preset outdoor fan air speed, and the electronic expansion valve opening is reduced from the maximum valve opening.
In the embodiment of the disclosure, when the air conditioner starts or stops operating at the time of starting, the air conditioner may be operated in the electronic expansion valve opening reduction mode. Thus, in some embodiments, operating the air conditioner in the electronic expansion valve opening reduction mode comprises: under the condition of obtaining a switch operation control instruction, obtaining a first indoor and outdoor temperature value, and controlling the air conditioner to operate in an opening reduction mode of an electronic expansion valve; in the electronic expansion valve opening reduction mode, the operation frequency of the compressor is the first lowest compressor frequency matched with the first indoor and outdoor temperature values, the air speed of the indoor fan is the first preset indoor fan speed, the air speed of the outdoor fan is the first preset outdoor fan speed, and the opening of the electronic expansion valve is reduced from the maximum valve opening.
Acquiring the switch operation control instruction may include: and receiving a starting control instruction sent by the remote control terminal, or receiving a stopping control instruction sent by the remote control terminal, or generating a stopping control instruction according to the running state information of the air conditioner, and the like. It can be seen that the switch operation control command may comprise a start control command or a stop control command.
When the air conditioner is operated in the opening reduction mode of the electronic expansion valve, the exhaust temperature value of the air conditioner can be acquired in real time or at regular time, and the current exhaust temperature value is acquired correspondingly each time.
Step 102: and under the condition that the current exhaust temperature value is consistent with the previous exhaust temperature value, exiting the opening reduction mode of the electronic expansion valve, and determining the current opening matched with the current exhaust temperature value as the regulation reference opening.
In the process that the air conditioner operates in the electronic expansion valve opening reduction mode, the exhaust temperature value of the air conditioner is obtained, and the exhaust temperature value obtained each time can be recorded, so that the current exhaust temperature value can be compared with the last exhaust temperature value, if the current exhaust temperature value and the last exhaust temperature value are equal or the difference value between the current exhaust temperature value and the last exhaust temperature value is smaller than a set value, the current exhaust temperature value is consistent with the last exhaust temperature value, namely the exhaust temperature is not changed any more, the opening of the electronic expansion valve is proper at the moment, and the requirement of starting or stopping the air conditioner is met, and the current opening matched with the current exhaust temperature value can be determined as the regulation reference opening.
The manner of determining the current opening degree matching the current exhaust temperature value as the adjustment reference opening degree may be various. In some embodiments, if the maximum valve opening of the electronic expansion valve opening can be determined, and the electronic expansion valve opening is decreased from the maximum valve opening according to a set rule, the current opening matching the current exhaust temperature value can be determined according to the time for obtaining the current exhaust temperature value. The current opening degree is matched to the actual valve opening degree of the electronic expansion valve.
In some embodiments, a first minimum opening degree matching the first indoor and outdoor temperature value may be determined according to a correspondence between the indoor and outdoor temperature values and a minimum opening degree of the electronic expansion valve at a lowest compressor frequency operation; and determining the first minimum opening degree as a current opening degree matched with the current exhaust temperature value and determining as an adjustment reference opening degree.
The local or cloud server of the air conditioner can configure and store the corresponding relation between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the operation of the lowest compressor frequency. The method comprises the steps of determining different lowest compressor frequencies corresponding to different indoor and outdoor temperature values, and under the condition of each indoor and outdoor temperature value, if the compressor runs at the corresponding lowest compressor frequency, the indoor fan runs at a first preset indoor unit wind speed, the outdoor fan runs at a first preset outdoor unit wind speed, and the minimum opening degree of the electronic expansion valve under the condition that the air conditioner does not stop is obtained, so that the corresponding relation between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the running of the lowest compressor frequency is obtained.
If the corresponding relation between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation is locally stored in the air conditioner, a first minimum opening degree matched with the first indoor and outdoor temperature value can be determined according to the stored corresponding relation, the first minimum opening degree is equal to a current opening degree matched with the current exhaust temperature value, and therefore the first minimum opening degree, namely the current opening degree, is determined as an adjustment reference opening degree. Wherein, first indoor outer temperature value is the indoor outer temperature value that the start-up air conditioner corresponds when being in the operation of electron expansion valve aperture reduction mode, for example: and under the condition that the switch operation control instruction is obtained, obtaining indoor and outdoor temperature values.
In some embodiments, the cloud server stores a corresponding relationship between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation, and the first indoor and outdoor temperature value may be sent to the cloud server, so that the cloud server receives a first minimum opening degree determined by the cloud server according to the stored corresponding relationship, and regards the first minimum opening degree as a current opening degree matching the current exhaust temperature value, thereby determining the first minimum opening degree, that is, the current opening degree as the adjustment reference opening degree.
Step 103: and controlling the electronic expansion valve to operate according to the adjusted reference opening degree.
When the air conditioner is started, the electronic expansion valve is operated in an opening reduction mode, and after the adjustment reference opening is determined, the reference opening can be adjusted to be a step counting starting point to control the electronic expansion valve to operate. For example: and (3) regulating the reference opening degree to be 60 steps, if 5 steps need to be added in the running process of the air conditioner, regulating to be 65 steps by taking the 60 steps as a reference, and regulating to be 59 steps if one step is closed.
When the air conditioner is stopped, the electronic expansion valve is operated in an opening reduction mode, and after the adjustment reference opening is determined, the electronic expansion valve can be controlled to operate in a closing direction to adjust the reference opening. For example: and (4) regulating the reference opening degree to 50 steps, stopping the air conditioner, and closing the electronic expansion valve, so that the electronic expansion valve is closed for 50 steps.
The start or stop of the air conditioner can be controlled by a switch operation command, and therefore, in some embodiments, the controlling the operation of the electronic expansion valve according to the adjustment reference opening degree comprises: under the condition that the switch operation control instruction is a starting control instruction, controlling the electronic expansion valve to operate by taking the adjusting reference opening degree as a step counting starting point; and controlling the electronic expansion valve to operate towards the closing direction to adjust the reference opening degree under the condition that the operation control instruction is a stop control instruction.
In this embodiment, in the process that the air conditioner operates in the electronic expansion valve opening reduction mode, the adjustment reference opening of the electronic expansion valve is determined according to the current exhaust temperature value of the air conditioner, so that the operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, and thus, the control precision of the electronic expansion valve can be improved, and the adjustment reference opening can be the actual valve opening or the equivalent minimum opening matched with the indoor and outdoor temperatures, so that the electronic expansion valve can be ensured to be closed in place, the probability of faults caused by the fact that the electronic expansion valve is over-stepped is reduced, the reliability of the electronic expansion valve is improved, and further, the reliability of the air conditioner is improved.
In the disclosed embodiment, is it determined from the recorded exhaust temperature value whether the current exhaust temperature value is consistent with the previous exhaust temperature value? Therefore, the acquired current exhaust temperature value needs to be recorded each time, and in some embodiments, in the case that the current exhaust temperature value is determined to be inconsistent with the previous exhaust temperature value, the current exhaust temperature value needs to be replaced by the previous exhaust temperature value, and the operation of the electronic expansion valve opening reduction mode of the air conditioner needs to be maintained. Namely, when the current exhaust temperature value is inconsistent with the previous exhaust temperature value, the opening degree of the electronic expansion valve needs to be reduced continuously until the current exhaust temperature value is consistent with the previous exhaust temperature value, and the adjustment reference opening degree is determined.
The following operational flow is integrated into a specific embodiment to illustrate the control process of the electronic expansion valve for the air conditioner provided by the embodiment of the invention.
In this embodiment, the air conditioner stores the corresponding relationship between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation.
Fig. 2 is a schematic flowchart of a method for controlling an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure. Referring to fig. 2, the process for controlling an electronic expansion valve of an air conditioner includes:
step 201: under the condition that a starting control instruction sent by a remote control terminal is received, a first indoor and outdoor temperature value is obtained, and a first lowest compressor frequency corresponding to the first indoor and outdoor temperature value is determined.
Step 202: and controlling the air conditioner to be operated in an electronic expansion valve opening reduction mode.
In the electronic expansion valve opening reduction mode, the operation frequency of the compressor is the first lowest compressor frequency, the air speed of the indoor fan is the first preset indoor fan speed, the air speed of the outdoor fan is the first preset outdoor fan speed, and the opening of the electronic expansion valve is gradually reduced from the maximum valve opening, wherein the opening can be reduced according to a set rule or randomly reduced.
Step 203: and acquiring the current exhaust temperature value of the air conditioner when the timing time is reached.
Step 204: is the current exhaust temperature value consistent with the previous exhaust temperature value determined? If so, go to step 205, otherwise, go to step 208.
Step 205: and determining a first minimum opening degree matched with the first indoor and outdoor temperature values according to the corresponding relation between the stored indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation.
Step 206: determining the first minimum opening as a current opening matching the current exhaust temperature value and as an adjustment reference opening, and exiting the electronic expansion valve opening reduction mode.
Step 207: and controlling the electronic expansion valve to operate by taking the adjusting reference opening degree as a step counting starting point according to the starting control instruction.
For example: if the electronic expansion valve needs to be adjusted to a first set step number, the electronic expansion valve is adjusted to (the adjustment reference opening degree + the first set step number) from the start point of step counting towards the opening direction; if the second set step number needs to be reduced, the step is adjusted to the closing direction from the adjustment reference opening as the step counting starting point (the adjustment reference opening-the second set step number).
Step 208: the current exhaust temperature value is replaced with the previous exhaust temperature value and the process returns to step 202.
The air conditioner maintains the operation of the electronic expansion valve opening reduction mode, and the opening of the electronic expansion valve needs to be reduced continuously until the current exhaust temperature value is consistent with the previous exhaust temperature value.
Therefore, in the embodiment, in the process that the air conditioner operates in the electronic expansion valve opening reduction mode, the adjustment reference opening of the electronic expansion valve is determined according to the current exhaust temperature value of the air conditioner, so that the operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, and thus, the control precision of the electronic expansion valve can be improved.
In this embodiment, the air conditioner stores the corresponding relationship between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation.
Fig. 3 is a schematic flowchart of a control method for an electronic expansion valve of an air conditioner according to an embodiment of the present disclosure. Referring to fig. 3, a process for controlling an electronic expansion valve of an air conditioner includes:
step 301: under the condition that a shutdown control instruction sent by a remote control terminal is received, a first indoor and outdoor temperature value is obtained, and a first lowest compressor frequency corresponding to the first indoor and outdoor temperature value is determined.
Step 302: and controlling the air conditioner to be operated in an electronic expansion valve opening reduction mode.
In the electronic expansion valve opening reduction mode, the operation frequency of the compressor is the first lowest compressor frequency, the air speed of the indoor fan is the first preset indoor fan air speed, the air speed of the outdoor fan is the first preset outdoor fan air speed, and the opening of the electronic expansion valve is reduced from the maximum valve opening.
Step 303: and acquiring the current exhaust temperature value of the air conditioner when the timing time is reached.
Step 304: is the current exhaust temperature value consistent with the previous exhaust temperature value determined? If so, go to step 305, otherwise, go to step 308.
Step 305: and determining a first minimum opening degree matched with the first indoor and outdoor temperature values according to the corresponding relation between the stored indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation.
Step 306: determining the first minimum opening as a current opening matching the current exhaust temperature value and as an adjustment reference opening, and exiting the electronic expansion valve opening reduction mode.
Step 307: and controlling the electronic expansion valve to move towards the closing direction to adjust the reference opening.
And receiving a shutdown control instruction, wherein the electronic expansion valve of the air conditioner needs to be closed, and at the moment, the reference opening is adjusted to be the minimum opening corresponding to the first indoor and outdoor temperature value, namely the electronic expansion valve operates towards the closing direction to be the minimum opening corresponding to the first indoor and outdoor temperature value, which is equal to the actual valve opening. For example: and if the standard opening degree is adjusted to be 30 steps, the electronic expansion valve can be controlled to run for 30 steps towards the closing direction, and the electronic expansion valve is closed.
Step 308: the current exhaust temperature value is replaced with the previous exhaust temperature value and the process returns to step 302.
The air conditioner maintains the operation of the electronic expansion valve opening reduction mode, and the opening of the electronic expansion valve needs to be reduced continuously until the current exhaust temperature value is consistent with the previous exhaust temperature value.
Therefore, in the embodiment, in the process that the air conditioner operates in the electronic expansion valve opening reduction mode, the adjustment reference opening of the electronic expansion valve is determined according to the current exhaust temperature value of the air conditioner, so that the operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, and thus, the expansion valve is closed according to the minimum opening switch matched with the outdoor temperature value, the failure probability caused by the fact that the electronic expansion valve is stepped can be reduced, the reliability of the electronic expansion valve is improved, and the reliability of the air conditioner is further improved.
According to the above process for air conditioner electronic expansion valve control, an apparatus for air conditioner electronic expansion valve control can be constructed.
Fig. 4 is a schematic structural diagram of an electronic expansion valve control device for an air conditioner according to an embodiment of the present disclosure. As shown in fig. 4, the electronic expansion valve control apparatus for an air conditioner includes: an acquisition module 410, a baseline determination module 420, and a valve control module 430.
An obtaining module 410 configured to obtain a current exhaust temperature value of the air conditioner, wherein the air conditioner is operated in an electronic expansion valve opening reduction mode.
And a reference determination module 420 configured to exit the electronic expansion valve opening reduction mode and determine a current opening matching the current exhaust temperature value as the adjustment reference opening, in case it is determined that the current exhaust temperature value is consistent with the previous exhaust temperature value.
And a valve control module 430 configured to control the operation of the electronic expansion valve according to the adjustment reference opening degree.
In some embodiments, further comprising: the mode control module is configured to acquire a first indoor and outdoor temperature value under the condition that the switch operation control instruction is acquired, and control the air conditioner to operate in an electronic expansion valve opening reduction mode; in the electronic expansion valve opening reduction mode, the operation frequency of the compressor is a first lowest compressor frequency matched with a first indoor and outdoor temperature value, the air speed of the indoor unit is a first preset indoor unit air speed, the air speed of the outdoor unit is a first preset outdoor unit air speed, and the electronic expansion valve is reduced from the maximum valve opening.
In some embodiments, the valve control module 430 is configured to control the electronic expansion valve to operate by taking the adjustment reference opening degree as a step counting starting point if the switch operation control command is a starting control command; and controlling the electronic expansion valve to operate towards the closing direction to adjust the reference opening degree under the condition that the operation control instruction is a stop control instruction.
In some embodiments, the reference determining module 420 is specifically configured to determine a first minimum opening degree matching the first indoor and outdoor temperature values according to a corresponding relationship between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation; and determining the first minimum opening degree as a current opening degree matched with the current exhaust temperature value and determining as an adjustment reference opening degree.
In some embodiments, further comprising: and the replacement maintaining module is configured to replace the current exhaust temperature value with the previous exhaust temperature value and maintain the operation of the electronic expansion valve opening reduction mode of the air conditioner under the condition that the current exhaust temperature value is determined to be inconsistent with the previous exhaust temperature value.
The following describes in detail an air conditioner electronic expansion valve control process of the apparatus for air conditioner electronic expansion valve control applied to an air conditioner.
In this embodiment, the air conditioner stores the corresponding relationship between the indoor and outdoor temperature values and the minimum opening degree of the electronic expansion valve under the lowest compressor frequency operation.
Fig. 5 is a schematic structural diagram of an electronic expansion valve control device for an air conditioner according to an embodiment of the present disclosure. As shown in fig. 5, the electronic expansion valve control device for an air conditioner includes: an acquisition module 410, a baseline determination module 420, a valve control module 430, a mode control module 440, and a replacement maintenance module 450.
Under the condition that a switch operation control instruction is obtained, the mode control module 440 obtains a first indoor and outdoor temperature value and controls the air conditioner to operate in an electronic expansion valve opening reduction mode; in the electronic expansion valve opening reduction mode, the operation frequency of the compressor is the first lowest compressor frequency matched with the first indoor and outdoor temperature values, the air speed of the indoor fan is the first preset indoor fan speed, the air speed of the outdoor fan is the first preset outdoor fan speed, and the opening of the electronic expansion valve is reduced from the maximum valve opening.
In this way, the obtaining module 410 may obtain the current exhaust temperature value of the air conditioner during the operation of the air conditioner in the electronic expansion valve opening reduction mode. When the current exhaust temperature value is consistent with the previous exhaust temperature value, the air conditioner can exit the electronic expansion valve opening reduction mode, and the reference determination module 420 can determine a first minimum opening matched with the first indoor and outdoor temperature value according to the corresponding relation between the indoor and outdoor temperature values and the minimum opening of the electronic expansion valve under the lowest compressor frequency operation; and determining the first minimum opening degree as a current opening degree matched with the current exhaust temperature value and determining as an adjustment reference opening degree.
Therefore, in the case that the switch operation control instruction is the start control instruction, the valve control module 430 may adjust the reference opening degree as the step counting starting point to control the operation of the electronic expansion valve. And in the case that the operation control command is a shutdown control command, the valve control module 430 may control the electronic expansion valve to operate in a closing direction to adjust the reference opening degree.
Of course, in the event that it is determined that the current exhaust temperature value is inconsistent with the previous exhaust temperature value, the replacement maintenance module 450 may replace the current exhaust temperature value with the previous exhaust temperature value and maintain the electronic expansion valve opening reduction mode of the air conditioner to operate. Thus, the opening degree of the electronic expansion valve needs to be reduced continuously until the current exhaust temperature value is consistent with the previous exhaust temperature value.
Therefore, in the embodiment, the device for controlling the electronic expansion valve of the air conditioner can determine the adjustment reference opening of the electronic expansion valve according to the current exhaust temperature value of the air conditioner in the process that the air conditioner operates in the electronic expansion valve opening reduction mode, so that the operation control of the electronic expansion valve is performed on the basis of the adjustment reference opening, the control precision of the electronic expansion valve can be improved, the adjustment reference opening can be the minimum opening matched with the indoor and outdoor temperature, the fault probability caused by the over-step of the electronic expansion valve can be reduced, the reliability of the electronic expansion valve is improved, and the reliability of the air conditioner is further improved.
The embodiment of the present disclosure provides a device for controlling an electronic expansion valve of an air conditioner, which is structurally shown in fig. 6 and includes:
a processor (processor)1000 and a memory (memory)1001, and may further include a Communication Interface (Communication Interface)1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other through the bus 1003. Communication interface 1002 may be used for the transfer of information. The processor 1000 may invoke logic instructions in the memory 1001 to perform the method for air conditioner electronic expansion valve control of the above-described embodiment.
In addition, the logic instructions in the memory 1001 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 1001 is a computer readable 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 1000 executes functional applications and data processing by executing program instructions/modules stored in the memory 1001, namely, implements the method for controlling the electronic expansion valve of the air conditioner in the above method embodiment.
The memory 1001 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 air conditioner, and the like. Further, the memory 1001 may include a high-speed random access memory and may also include a nonvolatile memory.
The embodiment of the present disclosure provides a control device for an electronic expansion valve of an air conditioner, including: a processor and a memory storing program instructions, the processor being configured to, upon execution of the program instructions, perform a method for air conditioner electronic expansion valve control.
The embodiment of the disclosure provides an air conditioner, which comprises the control device for the electronic expansion valve of the air conditioner.
The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the 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-described method for controlling an electronic expansion valve for 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, which is stored in a storage medium and includes one or more instructions for enabling a computer air conditioner (which may be a personal computer, a server, or a network air conditioner, etc.) to perform all or part of the steps of the method according to 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 the 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. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. 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 another identical element in the process, method or air conditioner 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 technical 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, air conditioners, 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 (8)
1. A method for controlling an electronic expansion valve of an air conditioner, comprising:
under the condition of obtaining a switch operation control instruction, obtaining a first indoor and outdoor temperature value, and controlling the air conditioner to operate in an opening reduction mode of an electronic expansion valve; in the electronic expansion valve opening reduction mode, the operation frequency of a compressor is a first lowest compressor frequency matched with the first indoor and outdoor temperature value, the air speed of an indoor fan is a first preset indoor fan speed, the air speed of an outdoor fan is a first preset outdoor fan speed, and the opening of the electronic expansion valve is reduced from the maximum valve opening;
acquiring a current exhaust temperature value of an air conditioner, wherein the air conditioner operates in an electronic expansion valve opening reduction mode;
under the condition that the current exhaust temperature value is consistent with the previous exhaust temperature value, the electronic expansion valve opening reduction mode is exited, and the current opening matched with the current exhaust temperature value is determined as the adjustment reference opening;
and controlling the electronic expansion valve to operate according to the adjustment reference opening degree.
2. The method of claim 1, wherein the controlling the operation of the electronic expansion valve according to the adjustment reference opening degree comprises:
under the condition that the switch operation control instruction is a starting control instruction, controlling the electronic expansion valve to operate by taking the adjusting reference opening as a step counting starting point;
and under the condition that the operation control instruction is a stop control instruction, controlling the electronic expansion valve to operate towards the closing direction to adjust the reference opening.
3. The method of claim 1, wherein determining the current opening degree that matches the current exhaust temperature value as an adjustment reference opening degree comprises:
determining a first minimum opening degree matched with the first indoor and outdoor temperature value according to the corresponding relation between the indoor and outdoor temperature value and the minimum opening degree of the electronic expansion valve under the operation of the lowest compressor frequency;
and determining the first minimum opening degree as a current opening degree matched with the current exhaust temperature value, and determining the first minimum opening degree as an adjusting reference opening degree.
4. The method according to any one of claims 1-3, further comprising:
and under the condition that the current exhaust temperature value is inconsistent with the previous exhaust temperature value, replacing the current exhaust temperature value with the previous exhaust temperature value, and maintaining the operation of the electronic expansion valve opening reduction mode of the air conditioner.
5. An apparatus for controlling an electronic expansion valve of an air conditioner, comprising:
the mode control module is configured to acquire a first indoor and outdoor temperature value under the condition of acquiring a switch operation control instruction, and control the air conditioner to operate in an electronic expansion valve opening reduction mode; in the electronic expansion valve opening reduction mode, the compressor operation frequency is a first lowest compressor frequency matched with the first indoor and outdoor temperature value, the indoor unit air speed is a first preset indoor unit air speed, the outdoor unit air speed is a first preset outdoor unit air speed, and the electronic expansion valve is reduced from the maximum valve opening;
an obtaining module configured to obtain a current exhaust temperature value of an air conditioner, wherein the air conditioner operates in an electronic expansion valve opening reduction mode;
a reference determination module configured to exit the electronic expansion valve opening reduction mode and determine a current opening matching the current exhaust temperature value as an adjustment reference opening, in a case where it is determined that the current exhaust temperature value is consistent with a previous exhaust temperature value;
and the valve control module is configured to control the electronic expansion valve to operate according to the adjusting reference opening degree.
6. The apparatus of claim 5,
the valve control module is configured to control the electronic expansion valve to operate by taking the adjusting reference opening degree as a step counting starting point under the condition that the switch operation control instruction is a starting control instruction; and under the condition that the operation control instruction is a stop control instruction, controlling the electronic expansion valve to operate towards the closing direction to adjust the reference opening degree.
7. An apparatus for electronic expansion valve control of an air conditioner, the apparatus comprising a processor and a memory having stored thereon program instructions, wherein the processor is configured to perform the method for electronic expansion valve control of an air conditioner according to any one of claims 1 to 4 when executing the program instructions.
8. An air conditioner, comprising: the device for controlling the electronic expansion valve of the air conditioner as claimed in claim 5 or 7.
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| CN202011437871.1A CN112556129B (en) | 2020-12-11 | 2020-12-11 | Method and device for controlling electronic expansion valve of air conditioner and air conditioner |
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