CN114484830B - Control method and control system of air conditioner, electronic equipment and storage medium - Google Patents
Control method and control system of air conditioner, electronic equipment and storage medium Download PDFInfo
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- CN114484830B CN114484830B CN202210043457.5A CN202210043457A CN114484830B CN 114484830 B CN114484830 B CN 114484830B CN 202210043457 A CN202210043457 A CN 202210043457A CN 114484830 B CN114484830 B CN 114484830B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 230000001276 controlling effect Effects 0.000 claims description 50
- 230000000875 corresponding effect Effects 0.000 claims description 28
- 239000003507 refrigerant Substances 0.000 claims description 28
- 238000004590 computer program Methods 0.000 claims description 9
- 230000002596 correlated effect Effects 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003245 working effect Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method, a control system, electronic equipment and a storage medium of an air conditioner, wherein the control method comprises the following steps: acquiring the outdoor air temperature; acquiring a set temperature and a liquid outlet temperature of each heat exchange unit; controlling each heat exchange unit based on the set temperature, and controlling the compressor to operate at an initial working frequency; and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit. The control method of the air conditioner provided by the invention comprises the steps of firstly obtaining the outdoor air temperature, the set temperature and the liquid outlet temperature of each heat exchange unit, then controlling each heat exchange unit through the set temperature, controlling the initial working frequency of the compressor through the set temperature, and finally correcting and adjusting the initial working frequency of the compressor through the difference value between each liquid outlet temperature and the outdoor air temperature, so that when the outdoor temperature of the air conditioner with multiple heat exchange units is higher, the heat exchange effect is enhanced, and the working effect of the air conditioner is ensured.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a control method, a control system, an electronic device, and a storage medium for an air conditioner.
Background
Nowadays, air conditioners are now necessary appliances for home and office use, and particularly in summer and winter, air conditioners are used for a long time. The air conditioner can cool in summer and heat in winter, and can adjust the indoor temperature to be warm in winter and cool in summer, thereby providing a comfortable environment for users.
In order to achieve a better heat exchange effect, when the heat exchanger of the air conditioner exchanges heat, the refrigerant often adopts a flow mode that a plurality of paths of flow dividing pipelines or the refrigerant is converged from the plurality of paths of flow dividing pipelines to one path of main pipeline, so that the heat exchange area is increased, and a better heat exchange effect is obtained. The mode can not perform refrigeration well when the outdoor air temperature is higher, because the air conditioner is forced to perform self-protection by taking the sacrifice refrigeration capacity as a standard under the high-temperature working condition, the heat exchange of the heat exchanger is deteriorated, and the working effect of the air conditioner is affected.
Disclosure of Invention
The embodiment of the invention provides a control method, a control system, electronic equipment and a storage medium of an air conditioner, which are used for solving the problems that the heat exchange of the air conditioner with multiple heat exchange units is poor and the working effect of the air conditioner is affected in a high-temperature severe environment.
The embodiment of the invention provides a control method of an air conditioner, which comprises the following steps: an outdoor heat exchanger including a plurality of heat exchange units; the plurality of shunt tubes are in one-to-one correspondence with the plurality of heat exchange units; the compressors are connected with the corresponding heat exchange units through the shunt pipes;
The control method of the air conditioner comprises the following steps:
Acquiring the outdoor air temperature;
Acquiring a set temperature and a liquid outlet temperature of each heat exchange unit;
controlling each heat exchange unit based on a set temperature, and controlling the compressor to operate at an initial operating frequency;
and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
According to an embodiment of the present invention, the adjusting the working frequency of the compressor based on the difference between the outlet liquid temperature and the outdoor air temperature of each heat exchange unit includes:
if any difference value between the liquid outlet temperature and the outdoor air temperature is smaller than a preset difference value, controlling the compressor to perform frequency adding operation on the basis of the initial working frequency;
And if the difference value between all the liquid outlet temperatures and the outdoor air temperature is greater than or equal to the preset difference value, controlling the compressor to operate at the initial working frequency.
According to the method for controlling an air conditioner provided by one embodiment of the present invention, if the difference between any one of the liquid outlet temperatures and the outdoor air temperature is smaller than a preset difference, the step of controlling the compressor to perform frequency-adding operation on the basis of the initial working frequency includes:
Acquiring the number of the heat exchange units corresponding to which the difference value is smaller than a preset difference value;
determining the frequency adding parameters of the compressor based on the number of the heat exchange units, and controlling the compressor to operate at the initial working frequency and the frequency adding parameters; wherein the number of the heat exchange units is positively correlated with the frequency-adding parameter.
According to the method for controlling an air conditioner provided by one embodiment of the present invention, after the step of obtaining the outdoor air temperature, the step of obtaining the set temperature and the outlet liquid temperature of each heat exchange unit further includes:
comparing the outdoor air temperature with a preset temperature;
If the outdoor air temperature is greater than or equal to the preset temperature, controlling the compressor to work, and communicating at least two shunt pipes with the corresponding heat exchange unit and the compressor;
And if the outdoor air temperature is smaller than the preset temperature, controlling the compressor to work, and communicating one of the shunt pipes with the corresponding heat exchange unit and the compressor.
According to an embodiment of the present invention, the step of controlling each heat exchange unit based on a set temperature includes:
determining the heat exchange amount required by each heat exchange unit based on the set temperature;
And controlling each shunt tube to adjust the refrigerant flow of the corresponding heat exchange unit according to the heat exchange quantity.
According to one embodiment of the present invention, the controlling of the compressor at the initial operating frequency includes:
determining the partial pressure required by each heat exchange unit according to the set temperature;
determining total pressure according to the partial pressure of each heat exchange unit;
and determining the initial working frequency of the compressor according to the total pressure.
The embodiment of the invention also provides a control system of the air conditioner, which comprises:
the first acquisition module is used for acquiring the outdoor air temperature;
The second acquisition module is used for acquiring the set temperature and the liquid outlet temperature of each heat exchange unit;
the processing module is used for controlling each heat exchange unit based on the set temperature and controlling the compressor to run at the initial working frequency;
And the adjusting module is used for adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
According to one embodiment of the present invention, the control system of an air conditioner, the adjustment module includes:
The first adjusting unit is used for controlling the compressor to perform frequency adding operation on the basis of the initial working frequency when the difference value between any liquid outlet temperature and the outdoor air temperature is smaller than a preset difference value;
And the second adjusting unit is used for controlling the compressor to run at the initial working frequency when the difference value between all liquid outlet temperatures and the outdoor air temperature is larger than or equal to the preset difference value.
The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the control method of the air conditioner when executing the program.
The embodiment of the invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the control method of the air conditioner.
According to the control method of the air conditioner, the outdoor air temperature, the set temperature and the liquid outlet temperature of each heat exchange unit are firstly obtained, then each heat exchange unit is controlled through the set temperature, the initial working frequency of the compressor is controlled through the set temperature, and finally the initial working frequency of the compressor is corrected and adjusted through the difference value between each liquid outlet temperature and the outdoor air temperature, so that when the outdoor temperature of the air conditioner with multiple heat exchange units is higher, the heat exchange effect can be enhanced through adjusting the frequency of the compressor, and the working effect of the air conditioner is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a part of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flow chart of a control method of an air conditioner according to an embodiment of the present invention;
Fig. 3 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a control system of an air conditioner according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
Reference numerals: 1. an outdoor heat exchanger; 11. a heat exchange unit; 2. a shunt; 3. a compressor; 410. a first acquisition module; 420. a second acquisition module; 430. a processing module; 440. an adjustment module; 510. a processor; 520. a communication interface; 530. a memory; 540. a communication bus.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of embodiments of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The invention provides a control method of an air conditioner, which can be a wall-mounted air conditioner, a vertical cabinet air conditioner, a window air conditioner, a ceiling air conditioner and the like.
As shown in fig. 1, the air conditioner includes: an outdoor heat exchanger 1, a plurality of shunt tubes 2 and a compressor 3. The outdoor heat exchanger 1 comprises a plurality of heat exchange units 11, and a plurality of shunt pipes 2 are in one-to-one correspondence with the plurality of heat exchange units 11. The compressors 3 are connected to the corresponding heat exchange units 11 via respective branch pipes 2.
In the refrigerating process of the air conditioner, a compressor 3 compresses a low-temperature low-pressure refrigerant into a high-temperature high-pressure refrigerant, the high-temperature high-pressure refrigerant enters corresponding heat exchange units 11 through a plurality of shunt pipes 2, the heat is released and liquefied in each heat exchange unit 11 to become a low-temperature high-pressure refrigerant, a low-temperature high-pressure refrigerant liquid is reduced into a low-temperature low-pressure refrigerant liquid through an expansion valve, and the low-temperature low-pressure refrigerant liquid is subjected to heat absorption and vaporization through an indoor heat exchanger to become a refrigerant gas and enters the compressor 3 again. When the outdoor temperature is higher, the refrigerant in part of the heat exchange units 11 is less due to the plurality of heat exchange units 11, so that the temperature of part of the heat exchange units 11 is higher in the heat exchange process, and the heat exchange effect of the outdoor heat exchanger 1 is affected.
In order to solve the above problems, the present invention provides a control method of an air conditioner, as shown in fig. 2, the control method comprising the steps of:
step S110: the outdoor air temperature is obtained.
Step S120: and obtaining the set temperature and the liquid outlet temperature of each heat exchange unit.
When the air conditioner is started and is used for refrigerating, the outdoor air temperature can be obtained through the sensor, the set temperature input by a user is obtained, and the liquid outlet temperature of each heat exchange unit 11 is obtained, namely the cooling temperature of each heat exchange unit 11 after outdoor heat exchange is obtained.
Step S130: and controlling each heat exchange unit based on the set temperature, and controlling the compressor to operate at an initial operating frequency.
The heat exchange units 11 are controlled based on the set temperature, the connection condition of the shunt pipes 2 and the heat exchange units 11 is adjusted, and the initial operating frequency of the compressor 3 is controlled based on the set temperature.
Step S140: and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
After the initial working frequency is obtained, the working frequency of the compressor can be adjusted based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
Specifically, if any difference between the liquid outlet temperature and the outdoor air temperature is smaller than a preset difference, the compressor is controlled to perform frequency adding operation on the basis of the initial working frequency. If the difference between all the liquid outlet temperatures and the outdoor air temperature is greater than or equal to the preset difference, the compressor 3 is controlled to operate at the initial operating frequency.
For example, in the present embodiment, three heat exchange units 11 are provided, which are a first heat exchange unit, a second heat exchange unit, and a third heat exchange unit, respectively. Assume that the preset difference is 5 deg.c and the outdoor air temperature is 40 deg.c.
If the temperature of the liquid discharged from the first heat exchange unit is 44 ℃, the temperature of the liquid discharged from the second heat exchange unit is 50 ℃, and the temperature of the liquid discharged from the third heat exchange unit is 60 ℃. The temperature difference between the liquid outlet temperature of the first heat exchange unit and the temperature of the outdoor air is 4 ℃, the temperature difference between the liquid outlet temperature of the second heat exchange unit and the temperature of the outdoor air is 10 ℃, and the temperature difference between the liquid outlet temperature of the third heat exchange unit and the temperature of the outdoor air is 20 ℃. And if the temperature difference between the liquid outlet temperature of the first heat exchange unit and the outdoor air temperature is smaller than the preset difference value, controlling the compressor to perform frequency adding operation on the basis of the initial working frequency.
In order to realize accurate frequency-adding operation, in the process, the number of heat exchange units 11 corresponding to the difference value smaller than the preset difference value is obtained. Based on the number of heat exchange units 11, the frequency-adding parameters of the compressor 3 are determined, and the compressor 3 is controlled to operate at the initial operating frequency and frequency-adding. Wherein the number of heat exchanging units 11 is positively correlated with the frequency adding parameter. For example, when the number of heat exchange units 11 corresponding to the difference value less than the preset difference value is found to be one, the frequency adding parameter corresponding to the single heat exchange unit 11 is controlled to be increased based on the initial working frequency. When the number of the heat exchange units 11 corresponding to the difference value smaller than the preset difference value is found to be two, the frequency adding parameters corresponding to the two heat exchange units 11 are controlled to be increased on the basis of the initial working frequency. When the number of the heat exchange units 11 corresponding to the difference value smaller than the preset difference value is found to be three, the frequency adding parameters corresponding to the three heat exchange units 11 are controlled to be increased on the basis of the initial working frequency. By increasing the frequency-increasing parameter of the compressor 3 on the basis of the initial working frequency, the temperature of the refrigerant is increased according to the heat exchange condition on the basis of ensuring the normal working of the air conditioner, and the heat exchange temperature is increased, so that the heat exchange effect of the outdoor heat exchanger 1 is enhanced.
If the difference between all the liquid outlet temperatures and the outdoor air temperature is greater than or equal to the preset difference, the compressor 3 is controlled to operate at the initial operating frequency. For example, the temperature of the liquid discharged from the first heat exchange unit is 51 ℃, the temperature of the liquid discharged from the second heat exchange unit is 50 ℃, and the temperature of the liquid discharged from the third heat exchange unit is 51 ℃, and the difference between all the liquid discharged temperatures and the outdoor air temperature is greater than or equal to the preset difference, which indicates that the outdoor heat exchanger 1 works normally, and only the compressor 3 needs to be controlled to operate at the initial working frequency.
In addition, in order to simplify the control process, only the refrigerant temperature at the refrigerant outlet of the outdoor heat exchanger 1 can be obtained, and the initial operating frequency can be adjusted by the difference between the single refrigerant temperature and the outdoor air.
According to the control method of the air conditioner, the outdoor air temperature, the set temperature and the liquid outlet temperature of each heat exchange unit are firstly obtained, then each heat exchange unit is controlled through the set temperature, the initial working frequency of the compressor is controlled through the set temperature, and finally the initial working frequency of the compressor is corrected and adjusted through the difference value between each liquid outlet temperature and the outdoor air temperature, so that when the outdoor temperature of the air conditioner with multiple heat exchange units is higher, the heat exchange effect can be enhanced through adjusting the frequency of the compressor, and the working effect of the air conditioner is ensured.
As shown in fig. 3, step S110: after the step of acquiring the outdoor air temperature, step S120: the step of obtaining the set temperature and the liquid outlet temperature of each heat exchange unit further comprises the following steps:
step S150: the outdoor air temperature is compared with a preset temperature.
When the temperature is higher, in order to achieve better heat exchange effect, the refrigerant split-flow heat exchange which is easy to influence is enhanced, and after the outdoor air temperature is obtained, the obtained outdoor air temperature is compared with the preset temperature.
Step S160: and if the outdoor air temperature is greater than or equal to the preset temperature, controlling the compressor to work, and communicating at least two shunt pipes with the corresponding heat exchange units and the compressor.
If the outdoor air temperature is more than or equal to the preset temperature, for example, the outdoor air temperature is more than or equal to 43 ℃, the current air conditioner is indicated to work in a severe environment, at the moment, the compressor 3 is controlled to work, at least two split pipes 2 are communicated with the corresponding heat exchange unit 11 and the corresponding compressor 3, the plurality of split pipes 2 are utilized to communicate the heat exchange unit 11 and the corresponding compressor 3, heat exchange of the refrigerant is enhanced, and therefore the working effect of the air conditioner can be enhanced.
Step S170: and if the outdoor air temperature is smaller than the preset temperature, controlling the compressor to work, and communicating one of the split pipes with the corresponding heat exchange unit and the compressor.
If the outdoor air temperature is less than the preset temperature, for example, the outdoor air temperature is less than 43 ℃, the current air conditioner is indicated to work under the normal working environment, at the moment, the compressor 3 is controlled to work, one of the split pipes 2 is communicated with the corresponding heat exchange unit 11 and the compressor 3, only a single heat exchange unit 11 is needed to exchange heat of the refrigerant, and only the main heat exchange unit 11 is communicated with the compressor 3.
The step of controlling each heat exchange unit based on the set temperature includes:
Step S1301: the amount of heat exchange required for each heat exchange unit is determined based on the set temperature.
The set temperature of the air conditioner can be directly set by a user or can be determined according to the environmental temperature required by the user, the set temperature is the temperature to be reached by the current heat exchange of the air conditioner, the heat exchange quantity is to reach the set temperature, and the heat sum of each heat exchange unit 11 is to be reached by the heat exchange.
Step S1302: and controlling each shunt tube to adjust the refrigerant flow of the corresponding heat exchange unit according to the heat exchange quantity.
After the heat exchange amount required by each heat exchange unit 11 is obtained, the actually required refrigerant flow of each heat exchange unit 11 can be determined through the heat exchange amount, and the refrigerant flow is matched with the corresponding heat exchange unit 11, so that each split pipe 2 can be controlled to adjust the refrigerant flow of the corresponding heat exchange unit 11.
The step of controlling the initial operating frequency of the compressor includes:
Step S1303: and determining the partial pressure required by each heat exchange unit according to the set temperature.
Step S1304: the total pressure is determined based on the partial pressure of each heat exchange unit.
Step S1305: based on the total pressure, an initial operating frequency of the compressor is determined.
Based on the physical property parameter table of the refrigerant, the relation between the pressure and the temperature of the refrigerant is determined. The quality of the refrigerant flowing through each heat exchange unit 11 is certain, the temperature difference of heat exchange of each heat exchange unit 11 can be obtained, the temperature after heat exchange of the refrigerant can be obtained through the initial temperature, the partial pressure required by each heat exchange unit 11 can be obtained, the total pressure of all the heat exchange units 11 is determined after the partial pressure of each heat exchange unit 11 is obtained, and the initial working frequency of the compressor 3 can be determined based on the total pressure.
The following describes a control system of an air conditioner according to an embodiment of the present invention, and the control system of the air conditioner and the control method described above described below may be referred to correspondingly.
As shown in fig. 4, the control system of the air conditioner includes: a first acquisition module 410, a second acquisition module 420, a processing module 430, and an adjustment module 440.
Wherein the first acquisition module 410 is configured to acquire an outdoor air temperature. The second obtaining module 420 is configured to obtain a set temperature and a liquid outlet temperature of each heat exchange unit. The processing module 430 is used for controlling each heat exchange unit based on the set temperature and controlling the compressor to operate at an initial operating frequency. The adjusting module 440 is configured to adjust an operating frequency of the compressor based on a difference between a liquid outlet temperature and an outdoor air temperature of each of the heat exchange units.
The adjustment module comprises: the first adjusting unit is used for controlling the compressor to perform frequency adding operation on the basis of the initial working frequency when the difference value between any liquid outlet temperature and the outdoor air temperature is smaller than a preset difference value; and the second adjusting unit is used for controlling the compressor to run at the initial working frequency when the difference value between all liquid outlet temperatures and the outdoor air temperature is larger than or equal to the preset difference value.
Fig. 5 illustrates a physical schematic diagram of an electronic device, as shown in fig. 5, which may include: processor 510, communication interface (Communications Interface) 520, memory 530, and communication bus 540, wherein processor 510, communication interface 520, memory 530 complete communication with each other through communication bus 540. Processor 510 may invoke logic instructions in memory 530 to execute the air conditioner, the control method comprising: acquiring the outdoor air temperature; acquiring a set temperature and a liquid outlet temperature of each heat exchange unit; controlling each heat exchange unit based on the set temperature, and controlling the compressor to operate at an initial working frequency; and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
It should be noted that, in this embodiment, the electronic device may be a server, a PC, or other devices in the specific implementation, so long as the structure of the electronic device includes a processor 510, a communication interface 520, a memory 530, and a communication bus 540 as shown in fig. 5, where the processor 510, the communication interface 520, and the memory 530 complete communication with each other through the communication bus 540, and the processor 510 may call logic instructions in the memory 530 to execute the above method. The embodiment does not limit a specific implementation form of the electronic device.
Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Further, an embodiment of the present invention discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the air conditioner provided in the above-mentioned method embodiments, the control method comprising: acquiring the outdoor air temperature; acquiring a set temperature and a liquid outlet temperature of each heat exchange unit; controlling each heat exchange unit based on the set temperature, and controlling the compressor to operate at an initial working frequency; and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
In another aspect, an embodiment of the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program that is implemented when executed by a processor to perform the air conditioner provided in the above embodiments, the control method including: acquiring the outdoor air temperature; acquiring a set temperature and a liquid outlet temperature of each heat exchange unit; controlling each heat exchange unit based on the set temperature, and controlling the compressor to operate at an initial working frequency; and adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. A control method of an air conditioner, the air conditioner comprising: an outdoor heat exchanger including a plurality of heat exchange units; the plurality of shunt tubes are in one-to-one correspondence with the plurality of heat exchange units; the compressors are connected with the corresponding heat exchange units through the shunt pipes;
The control method of the air conditioner comprises the following steps:
in the process of operation refrigeration, acquiring the temperature of outdoor air;
Acquiring a set temperature and a liquid outlet temperature of each heat exchange unit;
controlling each heat exchange unit based on a set temperature, and controlling the compressor to operate at an initial operating frequency;
Adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature of each heat exchange unit and the outdoor air temperature; if any difference value between the liquid outlet temperature and the outdoor air temperature is smaller than a preset difference value, controlling the compressor to perform frequency adding operation on the basis of the initial working frequency; if the difference value between all liquid outlet temperatures and the outdoor air temperature is larger than or equal to a preset difference value, controlling the compressor to operate at an initial working frequency; the step of controlling the compressor to operate at an initial operating frequency includes: determining the partial pressure required by each heat exchange unit according to the set temperature; determining total pressure according to the partial pressure of each heat exchange unit; and determining the initial working frequency of the compressor according to the total pressure.
2. The method of claim 1, wherein if any difference between the outlet temperature and the outdoor air temperature is less than a preset difference, the step of controlling the compressor to perform the frequency-increasing operation based on the initial operating frequency comprises:
Acquiring the number of the heat exchange units corresponding to which the difference value is smaller than a preset difference value;
determining the frequency adding parameters of the compressor based on the number of the heat exchange units, and controlling the compressor to operate at the initial working frequency and the frequency adding parameters; wherein the number of the heat exchange units is positively correlated with the frequency-adding parameter.
3. The method according to claim 1, wherein after the step of obtaining the outdoor air temperature, the step of obtaining the set temperature and the outlet temperature of each heat exchange unit further comprises:
comparing the outdoor air temperature with a preset temperature;
If the outdoor air temperature is greater than or equal to the preset temperature, controlling the compressor to work, and communicating at least two shunt pipes with the corresponding heat exchange unit and the compressor;
And if the outdoor air temperature is smaller than the preset temperature, controlling the compressor to work, and communicating one of the shunt pipes with the corresponding heat exchange unit and the compressor.
4. A control method of an air conditioner according to any one of claims 1 to 3, wherein the step of controlling each of the heat exchanging units based on a set temperature includes:
determining the heat exchange amount required by each heat exchange unit based on the set temperature;
And controlling each shunt tube to adjust the refrigerant flow of the corresponding heat exchange unit according to the heat exchange quantity.
5. A control system of an air conditioner using the control method of an air conditioner according to any one of claims 1 to 4, comprising:
the first acquisition module is used for acquiring the outdoor air temperature;
The second acquisition module is used for acquiring the set temperature and the liquid outlet temperature of each heat exchange unit;
the processing module is used for controlling each heat exchange unit based on the set temperature and controlling the compressor to run at the initial working frequency;
the adjusting module is used for adjusting the working frequency of the compressor based on the difference value between the liquid outlet temperature and the outdoor air temperature of each heat exchange unit;
The adjustment module includes:
The first adjusting unit is used for controlling the compressor to perform frequency adding operation on the basis of the initial working frequency when the difference value between any liquid outlet temperature and the outdoor air temperature is smaller than a preset difference value;
And the second adjusting unit is used for controlling the compressor to run at the initial working frequency when the difference value between all liquid outlet temperatures and the outdoor air temperature is larger than or equal to the preset difference value.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the control method of an air conditioner according to any one of claims 1 to 4 when executing the program.
7. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, realizes the steps of the control method of an air conditioner according to any one of claims 1 to 4.
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| WO2016174750A1 (en) * | 2015-04-28 | 2016-11-03 | 三菱電機株式会社 | Air-conditioning device |
| CN106765525A (en) * | 2016-12-16 | 2017-05-31 | 广东美的暖通设备有限公司 | The stream control system of outer machine, constant speed Air-Cooled Heat Pump Unit and its control method |
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| CN108488997A (en) * | 2018-05-08 | 2018-09-04 | 广东美的制冷设备有限公司 | Air conditioner and its control method and computer readable storage medium |
| CN111473496B (en) * | 2020-04-29 | 2021-08-13 | 广东美的暖通设备有限公司 | Air conditioning system, control method and device thereof and storage medium |
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| WO2016174750A1 (en) * | 2015-04-28 | 2016-11-03 | 三菱電機株式会社 | Air-conditioning device |
| CN106765525A (en) * | 2016-12-16 | 2017-05-31 | 广东美的暖通设备有限公司 | The stream control system of outer machine, constant speed Air-Cooled Heat Pump Unit and its control method |
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