CN114646156A - Control method, control device, equipment and medium for electronic expansion valve of air conditioner - Google Patents
Control method, control device, equipment and medium for electronic expansion valve of air conditioner Download PDFInfo
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- CN114646156A CN114646156A CN202210261969.9A CN202210261969A CN114646156A CN 114646156 A CN114646156 A CN 114646156A CN 202210261969 A CN202210261969 A CN 202210261969A CN 114646156 A CN114646156 A CN 114646156A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000001276 controlling effect Effects 0.000 claims description 60
- 230000000875 corresponding effect Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 11
- 230000002596 correlated effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 7
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method, a control device, equipment and a medium for an electronic expansion valve of an air conditioner, which relate to the technical field of air-conditioner exhaust safety control and comprise the following steps: acquiring an exhaust temperature value; determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and/or determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value. According to the invention, when the exhaust temperature is higher, the exhaust temperature value is adjusted only by increasing the opening degree of the electronic expansion valve, and when the exhaust temperature is lower, the exhaust temperature value is adjusted only by increasing the frequency of the compressor, so that excessive adjustment is not caused; and the degree of opening adjustment of the electronic expansion valve is adjusted according to the exhaust temperature value, the adjustment duration of the exhaust temperature is shortened, and frequent frequency increase and frequency reduction of the compressor and switching on and off of the electronic expansion valve are avoided.
Description
Technical Field
The invention relates to the technical field of air conditioner exhaust safety control, in particular to a control method, a control device, equipment and a medium for an electronic expansion valve of an air conditioner.
Background
At present, for an air conditioner which performs throttling through an electronic expansion valve, the exhaust temperature is overhigh under a high-load working condition or when a refrigerant leaks and then runs.
In order to reduce the exhaust temperature value, the air conditioner controls the frequency of the electronic expansion valve and the frequency of the compressor to be synchronously adjusted. However, the adjustment of the opening of the electronic expansion valve may cause the frequency of the compressor to change, and when the electronic expansion valve and the frequency of the compressor are adjusted at the same time, the adjustment may be excessive, so that the frequency of the compressor fluctuates to a large extent, the adjustment period is lengthened, and the frequency of the compressor is frequently increased, decreased and the electronic expansion valve is turned on and off, which affects the user experience.
Disclosure of Invention
The invention provides a control method, a control device, equipment and a medium for an electronic expansion valve of an air conditioner, which are used for overcoming the defects that the frequency of a compressor fluctuates to a large extent due to excessive adjustment, the adjustment period is prolonged, the frequency of the compressor is frequently increased and decreased, the electronic expansion valve is frequently opened and closed, and the user experience is influenced when the frequency of the electronic expansion valve and the frequency of the compressor are simultaneously adjusted in the prior art, and the control method, the control device, the equipment and the medium for the electronic expansion valve of the air conditioner are realized.
The invention provides a control method of an electronic expansion valve of an air conditioner, which comprises the following steps:
acquiring an exhaust temperature value;
determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and/or determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
According to the method for controlling the electronic expansion valve of the air conditioner, the step of controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value comprises the following steps:
determining a preset interval in which the exhaust temperature value falls;
determining an opening degree adjusting value according to the falling preset interval;
and controlling the opening value of the electronic expansion valve to increase the opening adjustment value.
According to the control method of the electronic expansion valve of the air conditioner, the opening degree adjusting value is positively correlated with the corresponding temperature value of the preset interval.
According to the method for controlling the electronic expansion valve of the air conditioner, after the step of controlling the electronic expansion valve to increase the opening degree value according to the exhaust temperature value, the method further comprises the following steps:
waiting for a first preset time, and returning to obtain the exhaust temperature value again;
determining that the exhaust temperature value is increased, and controlling the electronic expansion valve to increase the opening value again according to the newly acquired exhaust temperature value; and determining that the exhaust temperature value is reduced, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor.
According to the control method of the electronic expansion valve of the air conditioner, after the exhaust temperature value is obtained, the method further comprises the following steps:
determining that the exhaust temperature value is greater than a third preset temperature value;
and controlling the compressor to stop.
According to the method for controlling the electronic expansion valve of the air conditioner, after the step of controlling the compressor to stop, the method further comprises the following steps:
waiting for a second preset time length;
controlling to start the compressor;
and controlling the electronic expansion valve to operate at the maximum opening degree.
According to the method for controlling the electronic expansion valve of the air conditioner provided by the invention, after the step of controlling the electronic expansion valve to operate at the maximum opening degree, the method further comprises the following steps:
waiting for a third preset time length;
returning to obtain the exhaust temperature value again;
and determining a preset interval in which the newly acquired exhaust temperature value falls, determining a frequency adjustment value according to the falling preset interval, and controlling the frequency of the compressor to reduce the frequency adjustment value.
The present invention also provides an air conditioner electronic expansion valve control apparatus, comprising:
the acquisition module is used for acquiring an exhaust temperature value;
the processing module is used for determining that the exhaust temperature value is greater than a first preset temperature value and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the electronic expansion valve control method of the air conditioner is realized.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the air conditioner electronic expansion valve control method as described in any one of the above.
According to the electronic expansion valve control method, the control device, the equipment and the medium, when the exhaust temperature is high, the exhaust temperature value of the compressor is adjusted only by increasing the opening degree of the electronic expansion valve, and when the exhaust temperature is low, the exhaust temperature value of the compressor is adjusted only by increasing the frequency of the compressor, so that excessive adjustment is avoided; and the degree of opening adjustment of the electronic expansion valve is adjusted according to the exhaust temperature value, the adjustment duration of the exhaust temperature is shortened, and frequent frequency increase and frequency reduction of the compressor and switching on and off of the electronic expansion valve are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an electronic expansion valve control method for an air conditioner according to an embodiment of the present invention;
fig. 2 is a second schematic flow chart of a control method for an electronic expansion valve of an air conditioner according to an embodiment of the present invention;
fig. 3 is a third schematic flow chart illustrating a method for controlling an electronic expansion valve of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Reference numerals:
110: a processor; 120: a communication interface; 130: a memory; 140: a communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "first" and "second", etc. are numbers that are used for clearly illustrating the product parts and do not represent any substantial difference. "upper", "lower", "inner", and the like are used merely to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may also be changed accordingly. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the description "in the range of …" in the present invention includes both end values. Such as "in the range of 10 to 20," includes both ends of the range of 10 and 20.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. Specific meanings of the above terms in the embodiments of the invention will be understood to those of ordinary skill in the art in specific cases.
The electronic expansion valve control method, control apparatus, device, medium, and product of the present invention are described below with reference to fig. 1 to 4.
Specifically, the method for controlling the electronic expansion valve of the air conditioner according to the embodiment, as shown in fig. 1, includes the following steps:
s100, acquiring an exhaust temperature value;
specifically, the exhaust temperature value of the compressor is detected in real time by arranging a corresponding temperature sensor on the exhaust pipe of the compressor, and is sent to the controller.
S200, determining that the exhaust temperature value is greater than a first preset temperature value, and controlling an electronic expansion valve to increase an opening value according to the exhaust temperature value; and/or determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
When the exhaust temperature value is larger than the first preset temperature value, the exhaust temperature is larger at the moment, the frequency of the compressor needs to be reduced step by step, the frequency of the compressor is not adjusted, and the exhaust temperature value is reduced by increasing the opening value of the electronic expansion valve.
When the exhaust temperature value is lower than a second preset temperature value, the exhaust temperature value is lower at the moment, the opening value of the electronic expansion valve is not adjusted, and the operation frequency of the compressor is increased to increase the exhaust temperature value.
According to the control method of the electronic expansion valve, when the exhaust temperature is high, the exhaust temperature value of the compressor is adjusted only by increasing the opening degree of the electronic expansion valve, and when the exhaust temperature is low, the exhaust temperature value of the compressor is adjusted only by increasing the frequency of the compressor, so that excessive adjustment is avoided; and the degree of opening adjustment of the electronic expansion valve is adjusted according to the exhaust temperature value, the adjustment duration of the exhaust temperature is shortened, and frequent frequency increase and frequency reduction of the compressor and switching on and off of the electronic expansion valve are avoided.
Specifically, in step S200 according to this embodiment, as shown in fig. 2, the step of controlling the electronic expansion valve to increase the opening degree value according to the exhaust temperature value includes:
step S210, determining a preset interval in which the exhaust temperature value falls;
specifically, a plurality of preset intervals of exhaust temperature are prestored in the air conditioner controller, and the temperature values corresponding to the preset intervals are gradually increased. When the exhaust temperature falls into different preset intervals, different running states of the compressor are indicated.
Specifically, there are four preset intervals in this embodiment, which are [ E, a ], [ a, B ], [ B, C) and [ C, D), respectively. The first preset interval comprises a numerical value E and does not comprise the numerical value A, the second preset interval comprises the numerical value A and does not comprise the numerical value B, the third preset interval comprises the numerical value B and does not comprise the numerical value C, and the fourth preset interval comprises the numerical value C and does not comprise the numerical value D. It should be noted that, the first preset temperature value described in this embodiment may be equal to E.
Step S220, determining an opening degree adjusting value according to the falling preset interval;
specifically, different preset intervals correspond to different opening degree adjustment values.
For example, for the first preset interval [ E, a), when the exhaust temperature value falls into the first preset interval, it indicates that the exhaust temperature is low, and the operation frequency of the compressor needs to be increased to increase the exhaust temperature value, at this time, the opening degree adjustment value corresponding to the first preset interval is zero, that is, the opening degree of the electronic expansion valve is not adjusted, and the exhaust temperature is increased only by adjusting the frequency of the compressor.
For the second preset interval [ A, B), when the exhaust temperature value falls into the second preset interval, the exhaust temperature value is moderate, the operation frequency of the compressor is not required to be adjusted, the opening degree of the electronic expansion valve is not required to be adjusted, and the opening degree adjustment value corresponding to the second preset interval is zero.
For the third preset interval [ B, C), when the exhaust temperature value falls into the third preset interval, it indicates that the exhaust temperature value is slightly higher, and the operation frequency of the compressor needs to be reduced to reduce the exhaust temperature value, and at this time, the opening value of the electronic expansion valve needs to be increased.
For the fourth preset interval [ C, D), when the exhaust temperature value falls into the fourth preset interval, it indicates that the exhaust temperature value is higher, and the operation frequency of the compressor needs to be reduced to a greater extent to reduce the exhaust temperature value, and at this time, the opening value of the electronic expansion valve needs to be increased. And the opening degree adjustment value corresponding to the third preset interval is larger than the opening degree adjustment value corresponding to the fourth preset interval.
Step S230, controlling the opening value of the electronic expansion valve to increase the opening adjustment value;
in the present embodiment, after the opening degree adjustment value is determined from the exhaust temperature value, the opening degree adjustment value is added to the previous opening degree value, and the electronic expansion valve is controlled to adjust the opening degree thereof by the newly determined opening degree value.
Specifically, the opening degree adjustment value and the temperature value corresponding to the preset interval are positively correlated. That is, the opening degree adjustment value is larger as the temperature value corresponding to the preset interval is larger.
Further, as shown in fig. 2, after the step S230, the method further includes the following steps:
and S240, waiting for the first preset time, returning to obtain the exhaust temperature value again, determining an opening degree adjustment value according to the newly obtained exhaust temperature, and controlling the opening degree value of the electronic expansion valve to increase the newly determined opening degree adjustment value again.
Preferably, the first predetermined period of time is in the range of 4 minutes to 6 minutes, preferably 5 minutes.
After controlling the electronic expansion valve of the air conditioner to operate at the adjusted opening degree value, waiting for the first preset time, obtaining the exhaust temperature value again, re-determining the opening degree adjustment value according to the preset interval in which the exhaust temperature value falls, and increasing the opening degree adjustment value on the basis of the current opening degree of the electronic expansion valve.
Wait for first preset duration, can make air conditioner compressor operation when relatively steady detect the exhaust pressure value again, obtain the exhaust temperature value when preventing that the air conditioner from not yet operating steadily, perhaps the exhaust temperature value still detects the exhaust pressure value and still is in higher degree when reducing, and then continuously increases electronic expansion valve, leads to the exhaust temperature value to reduce to lower degree, prevents that compressor frequency fluctuation is great.
For example, the initial opening value of the electronic expansion valve is 200, and when the exhaust temperature value is detected to be in the third preset interval for the first time, the opening adjustment value corresponding to the third preset interval is 50, and at this time, the opening value of the electronic expansion valve is adjusted to be 250. After the opening value is adjusted, the exhaust temperature value is acquired again after waiting for 5 minutes. If the exhaust temperature value still falls into a third preset interval, the opening value of the electronic expansion valve is continuously increased by 50, and the opening value is adjusted to be 300; if the exhaust temperature value falls into a fourth preset interval and the opening adjustment value corresponding to the fourth preset interval is 100, continuously increasing the opening value of the electronic expansion valve by 100, and adjusting the opening value to 350; if the exhaust temperature value is reduced to a second preset interval, keeping the opening of the electronic expansion valve unchanged, and controlling the frequency of the compressor to be reduced.
Further, after step S200, the method for controlling an electronic expansion valve of an air conditioner according to this embodiment is shown in fig. 3, and further includes the following steps:
step S210', determining that the exhaust temperature value is greater than a third preset temperature value;
specifically, the third preset temperature value is greater than the highest temperature value in the preset interval, and the third preset temperature value may be the temperature D. And judging the magnitude relation between the acquired exhaust temperature value and a third preset temperature value, and executing the step S220' when the exhaust temperature value is greater than the third preset temperature value.
And step S220', controlling the compressor to stop.
When the exhaust temperature value is greater than the third preset temperature value, the exhaust temperature value reaches a higher degree, and then the compressor operates under the working condition at the moment, so that the high-load operation of the compressor can be caused, and the compressor is controlled to stop in time.
Further, as shown in fig. 3, after the step of controlling the compressor to stop, the method further includes the following steps:
step S230', waiting for a second preset duration;
step S240', controlling to start the compressor;
specifically, the air conditioner turns on the compressor again after turning off the compressor for a second preset time period. Or the air conditioner starts the compressor after receiving the starting signal of the user.
Step S250', controlling the opening value of the electronic expansion valve to be the maximum opening;
because the compressor is stopped due to the overhigh exhaust temperature value, when the compressor is started, the opening value of the electronic expansion valve is directly controlled to operate at the maximum opening, for example, the electronic expansion valve operates at the maximum opening of 480, and the low-frequency operation of the compressor is controlled.
And step S260', waiting for a third preset time, and returning to the step S100 to realize the cyclic judgment.
And after the maximum opening degree of the electronic expansion valve runs for a third preset time, returning to the step S100 again and performing circulating judgment.
If the exhaust temperature value is still larger than or equal to the third preset temperature value, the compressor is closed again.
If the exhaust temperature value is smaller than the third preset temperature value, determining a frequency adjustment value according to a preset interval in which the exhaust temperature value falls and the falling preset interval, and controlling the frequency of the compressor to reduce the frequency adjustment value. Specifically, the opening degree adjustment values corresponding to different preset intervals are similar, the different preset intervals also correspond to different frequency adjustment values, after the opening degree of the electronic expansion valve is adjusted to the maximum value, the opening degree of the electronic expansion valve is not reduced due to reduction of the exhaust temperature, or the frequency corresponding to the frequency adjustment value is reduced on the basis of the current frequency through the corresponding frequency adjustment value.
Specifically, the present embodiment further provides an electronic expansion valve control device for an air conditioner, including:
the acquisition module is used for acquiring an exhaust temperature value;
the processing module is used for determining that the exhaust temperature value is greater than a first preset temperature value and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor.
Preferably, the electronic expansion valve control device of the air conditioner further comprises a control module, wherein the control module is used for adjusting the opening degree of the electronic expansion valve according to the determined opening degree value and adjusting the running frequency of the compressor according to the determined frequency value.
The control device provided by the invention is described below, and the control device described below and the control method described above can be referred to correspondingly.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)110, a communication Interface (Communications Interface)120, a memory (memory)130 and a communication bus 140, wherein the processor 110, the communication Interface 120 and the memory 130 communicate with each other via the communication bus 140. The processor 110 may call logic instructions in the memory 130 to execute an air conditioner electronic expansion valve control method, the method comprising: acquiring an exhaust temperature value; determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
In addition, the logic instructions in the memory 130 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. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing 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 according to the embodiments of the present invention. And the aforementioned storage medium includes: 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.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the method for controlling the electronic expansion valve of the air conditioner provided by the above methods, the method including: acquiring an exhaust temperature value; determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for controlling an electronic expansion valve of an air conditioner provided by the above methods, the method including: acquiring an exhaust temperature value; determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
The above-described embodiments of the apparatus are merely illustrative, and 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 modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method for an electronic expansion valve of an air conditioner is characterized by comprising the following steps:
acquiring an exhaust temperature value;
determining that the exhaust temperature value is greater than a first preset temperature value, and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and/or determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor, wherein the second preset temperature value is smaller than the first preset temperature value.
2. The method as claimed in claim 1, wherein the step of controlling the electronic expansion valve to increase the opening degree value according to the exhaust temperature value comprises:
determining a preset interval in which the exhaust temperature value falls;
determining an opening degree adjusting value according to the falling preset interval;
and controlling the opening value of the electronic expansion valve to increase the opening adjustment value.
3. The method as claimed in claim 2, wherein the opening degree adjustment value is positively correlated with the temperature value corresponding to the preset interval.
4. An air conditioner electronic expansion valve control method as claimed in claim 2, further comprising the following steps after the step of controlling the electronic expansion valve to increase the opening degree value according to the exhaust temperature value:
waiting for a first preset time, and returning to obtain the exhaust temperature value again;
determining that the exhaust temperature value is increased, and controlling the electronic expansion valve to increase the opening value again according to the newly acquired exhaust temperature value; and determining that the exhaust temperature value is reduced, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor.
5. An air conditioner electronic expansion valve control method according to any one of claims 1 to 4, characterized by further comprising the following steps after acquiring the exhaust temperature value:
determining that the exhaust temperature value is greater than a third preset temperature value;
and controlling the compressor to stop.
6. An air conditioner electronic expansion valve control method as claimed in claim 5, further comprising the steps of, after said step of controlling the compressor to stop:
waiting for a second preset time length;
controlling to start the compressor;
and controlling the electronic expansion valve to operate at the maximum opening degree.
7. An air conditioner electronic expansion valve control method as claimed in claim 6, further comprising the step of, after the step of controlling the electronic expansion valve to operate at the maximum opening degree:
waiting for a third preset time length;
returning to obtain the exhaust temperature value again;
and determining a preset interval in which the newly acquired exhaust temperature value falls, determining a frequency adjustment value according to the falling preset interval, and controlling the frequency of the compressor to reduce the frequency adjustment value.
8. An electronic expansion valve control device for an air conditioner, comprising:
the acquisition module is used for acquiring an exhaust temperature value;
the processing module is used for determining that the exhaust temperature value is greater than a first preset temperature value and controlling the electronic expansion valve to increase the opening value according to the exhaust temperature value; and determining that the exhaust temperature value is smaller than a second preset temperature value, controlling the opening value of the electronic expansion valve to be unchanged according to the exhaust temperature value, and reducing the frequency of the compressor.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the method for controlling an electronic expansion valve of an air conditioner according to any one of claims 1 to 7.
10. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the air conditioner electronic expansion valve control method according to any one of claims 1 to 7.
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