CN115451542A - Variable frequency air conditioner system control method and device and variable frequency air conditioner - Google Patents
Variable frequency air conditioner system control method and device and variable frequency air conditioner Download PDFInfo
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- CN115451542A CN115451542A CN202210942659.3A CN202210942659A CN115451542A CN 115451542 A CN115451542 A CN 115451542A CN 202210942659 A CN202210942659 A CN 202210942659A CN 115451542 A CN115451542 A CN 115451542A
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004378 air conditioning Methods 0.000 claims abstract description 28
- 230000003247 decreasing effect Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 8
- 230000002222 downregulating effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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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- 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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- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a control method and device for a variable frequency air conditioner system and a variable frequency air conditioner. The control method of the variable frequency air conditioning system comprises the following steps: acquiring the wind speed of an indoor unit of an air conditioner; when the wind speed of the indoor unit is reduced, acquiring the exhaust temperature of an air conditioner compressor; and if the exhaust temperature is greater than or equal to the warning temperature, the environmental temperature frequency limit of the compressor is adjusted downwards. According to the control method and device for the variable frequency air conditioner system and the variable frequency air conditioner, when the pressure of the air conditioner system is abnormally increased due to sudden drop of the air speed of the indoor unit, prejudgment can be made in advance, the frequency of the compressor can be adjusted in advance, the frequency of stable operation of the compressor can be reduced earlier, the system is prevented from being stopped due to overvoltage protection or overtemperature protection to the greatest extent, user experience can be improved, the operation stability of the air conditioner can be improved, and the service life of the whole machine can be prolonged.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device for a variable frequency air conditioner system and a variable frequency air conditioner.
Background
In the normal operation process of the variable frequency air conditioner, if a user down-regulates the air speed of an indoor unit of the air conditioner, the air speed of an inner fan is suddenly reduced, so that the system pressure is easily and suddenly increased, and the overvoltage protection of the whole machine is easily caused; meanwhile, the temperature of the inner and outer coil pipes exceeds the limit in a short time, overtemperature protection is caused before the frequency of the compressor is reduced, and then the air conditioner is stopped, so that the user experience is influenced, the running stability of the air conditioner is poor, and the service life of the whole air conditioner is influenced.
Disclosure of Invention
The invention aims to provide a control method and a control device of a variable frequency air conditioner system and the variable frequency air conditioner, and aims to solve the technical problem that the air conditioner is shut down easily when a user down-regulates the air speed in the variable frequency air conditioner in the prior art.
The invention provides a control method of a variable frequency air conditioning system, which comprises the following steps:
acquiring the wind speed of an indoor unit of an air conditioner;
when the wind speed of the indoor unit is reduced, acquiring the exhaust temperature of an air conditioner compressor;
and if the exhaust temperature is greater than or equal to the warning temperature, adjusting the ambient temperature frequency limit of the compressor downwards.
Compared with the prior art, the invention has the beneficial effects that:
when the exhaust temperature of the compressor is greater than or equal to the warning temperature, the system pressure can reach the warning pressure along with the exhaust temperature, the risk of stopping the air conditioner is high, at the moment, the frequency limit of the environment temperature of the compressor can be adjusted downwards, so that the frequency of the compressor is forcibly reduced under the limit of the frequency limit of the environment temperature, and therefore the frequency of the compressor can be timely reduced under the warning state of the system without waiting for the system to reach an overload state. That is to say, when the pressure of the air conditioning system rises abnormally due to sudden drop of the air speed of the indoor unit, if the air conditioner has a high shutdown risk, the system can make a prejudgment in advance and lower the frequency of the compressor in advance, so that the compressor can be reduced to the frequency of stable operation earlier, the shutdown of the system due to overvoltage protection or overtemperature protection is avoided to the greatest extent, the user experience can be improved, the operation stability of the air conditioner can be improved, and the service life of the whole machine is prolonged.
As an implementable embodiment, the method comprises: and if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, the ambient temperature is adjusted downwards to a first frequency limiting value, and the frequency increasing and reducing speed of the compressor is adjusted downwards to a first speed value.
The method has the beneficial effects that the stable operation of the system can be ensured on the basis of effectively reducing the risk of system shutdown.
As an embodiment, the method comprises: and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, down-regulating the ambient temperature frequency limit to a second frequency limit value, and up-regulating the frequency increasing and decreasing rate of the compressor to a second rate value, wherein the first frequency limit value is greater than the second frequency limit value.
The air conditioner has the beneficial effects that the shutdown can be avoided as much as possible, and the user experience and the air conditioner operation stability are guaranteed.
As an embodiment, the method further comprises: and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, the speed loop control proportion of the compressor is adjusted up to a preset proportion value.
The beneficial effects are that, can reduce coil pipe temperature more fast, reduce system pressure.
As an embodiment, the method further comprises: and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, the wind speed of the indoor unit is adjusted up to a preset wind speed value.
The beneficial effect is that the system pressure can be reduced to a good state more quickly and stably.
As an embodiment, the method further comprises: and if the exhaust temperature is greater than or equal to the over-limit temperature, controlling the compressor to stop, controlling a motor of an outdoor unit of the air conditioner to operate at the maximum rotating speed, and controlling the indoor unit to stop.
The compressor protection device has the advantages that the compressor can be prevented from being damaged, the exhaust temperature and the system pressure can be reduced to a safe range as soon as possible, and meanwhile, the user experience can be guaranteed.
As an embodiment, the step of obtaining the discharge temperature of the air conditioner compressor when the wind speed of the indoor unit decreases includes: when the wind speed of the indoor unit is reduced to the wind speed of silent wind or sleeping wind, acquiring the exhaust temperature of an air conditioner compressor;
and/or, the method further comprises: acquiring the running frequency of the compressor, and if the running frequency is the maximum frequency and the wind speed of the indoor unit is reduced, executing the step of acquiring the exhaust temperature of the air-conditioning compressor
The beneficial effect lies in, be convenient for save the power consumption.
As an embodiment, the warning temperature is 90 ℃, the overload temperature is 95 ℃, and the overrun temperature is 115 ℃;
and/or the first frequency limiting value is 50Hz, and the second frequency limiting value is 40Hz;
and/or the first speed value is 2s/Hz, and the second speed value is 0.5s/Hz.
The air conditioner has the beneficial effects that the effect of ensuring the user experience feeling can be realized on the basis of reducing the shutdown frequency of the air conditioner.
Correspondingly, the invention also provides a control device of the variable frequency air conditioning system, which comprises the following components:
the first acquisition module is used for acquiring the wind speed of the indoor unit of the air conditioner;
the second acquisition module is used for acquiring the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit is reduced;
and the adjusting module is used for adjusting the ambient temperature frequency limit of the compressor downwards when the exhaust temperature is greater than or equal to the warning temperature.
The present invention also provides a variable frequency air conditioner, which comprises: a processor and a storage device; the storage means has stored thereon a computer program which, when executed by the processor, performs the above-described method.
The invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above method.
The variable frequency air conditioner system control device, the variable frequency air conditioner and the computer readable storage medium provided by the invention can achieve the same technical effect as the variable frequency air conditioner system control method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a first schematic flowchart of a control method of an inverter air conditioning system according to an embodiment of the present invention;
FIG. 2 is a second schematic flowchart of a method for controlling an inverter air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device of an inverter air conditioning system according to an embodiment of the present invention.
Description of reference numerals:
301-a first acquisition module; 302-a second acquisition module; 303-adjustment module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Fig. 1 is a schematic flowchart of a method for controlling an inverter air conditioning system according to an embodiment of the present invention, where the method includes:
and S102, acquiring the air speed of the indoor unit of the air conditioner.
And S104, acquiring the exhaust temperature of the air conditioner compressor when the air speed of the indoor unit is reduced.
When the wind speed of the indoor unit is reduced, the system pressure is abnormally increased, meanwhile, the temperature of the inner coil pipe and the temperature of the outer coil pipe are easy to exceed the limit in a short time, and at the moment, the exhaust temperature of the compressor needs to be further acquired to judge the risk of shutdown of the air conditioner due to overvoltage protection or overtemperature protection.
And S106, if the exhaust temperature is higher than or equal to the warning temperature, the environmental temperature frequency limit of the compressor is adjusted downwards.
The environment temperature frequency limit is the maximum operation frequency which can be reached by the air-conditioning compressor in the corresponding environment temperature range; when the exhaust temperature of the compressor is greater than or equal to the warning temperature, the system pressure can reach the warning pressure along with the exhaust temperature, the risk of stopping the air conditioner is high, at the moment, the frequency limit of the environment temperature of the compressor can be adjusted downwards, so that the frequency of the compressor is forcibly reduced under the limit of the frequency limit of the environment temperature, and therefore the frequency of the compressor can be timely reduced under the warning state of the system without waiting for the system to reach an overload state. That is to say, when the pressure of the air conditioning system is abnormally increased due to sudden drop of the air speed of the indoor unit, if the air conditioner has a higher shutdown risk, the system can make a prejudgment in advance and lower the frequency of the compressor in advance, so that the compressor can be reduced to the frequency of stable operation earlier, the shutdown of the system due to overvoltage protection or overtemperature protection is avoided to the greatest extent, the user experience can be improved, the operation stability of the air conditioner can be improved, and the service life of the whole machine can be prolonged.
When the exhaust temperature is greater than or equal to the warning temperature, the system can control the variable frequency air conditioner according to different exhaust temperature sizes, and the method specifically comprises the following steps:
a1, if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, reducing the ambient temperature frequency limit to a first frequency limit value, and reducing the frequency increasing and reducing speed of the compressor to a first speed value. Wherein, the first frequency limiting value can be set to 50Hz, the normal frequency increasing and decreasing rate value of the compressor is 1s/Hz, and the first rate value can be set to 2s/Hz.
It should be noted that the frequency increasing and decreasing rate of the compressor is adjusted downward, so that the operating frequency of the compressor can be slowly decreased, the fluctuation caused by the decrease of the operating frequency of the compressor can be reduced as much as possible, and the stable operation of the system can be guaranteed; at the moment, the exhaust temperature is lower than the overload temperature, and the compressor is not easy to stop in a short time, so that the frequency of the compressor is reduced slowly, and the risk of system stop can be effectively reduced.
And A2, if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, lowering the ambient temperature frequency limit value to a second frequency limit value, and raising the frequency raising and reducing speed of the compressor to a second speed value, wherein the first frequency limit value is greater than the second frequency limit value. Wherein the second frequency limit value may be set to 40Hz, and the second speed value may be set to 0.5s/Hz.
It should be noted that, when the exhaust temperature is greater than or equal to the overload temperature, the system shutdown risk is higher, and the compressor may possibly have the shutdown problem at any time, and at this moment, the frequency increasing and decreasing rate of the compressor is adjusted, so that the operation frequency of the compressor can be rapidly decreased, the decreasing rate of the system pressure and the exhaust temperature is increased, the shutdown is avoided as much as possible, the user experience is guaranteed, and the operation stability of the air conditioner is improved. In addition, compared with the low risk condition that the exhaust temperature is lower than the overload temperature, when the exhaust temperature is higher than or equal to the overload temperature, the environmental temperature frequency limiting value is adjusted by a larger range, the reduction speed of the system pressure and the exhaust temperature can be further improved, and the shutdown risk is reduced.
Furthermore, when the frequency of the compressor is adjusted, the speed loop control proportion of the compressor can be adjusted to a preset proportion value, so that the sensitivity of a motor of the compressor is increased, the running speed response of the motor is improved, the temperature of the coil pipe can be reduced more quickly, and the pressure of a system is reduced. Specifically, the speed loop control ratio of the compressor may be adjusted from 0.02 to 0.04.
The air speed of the indoor unit can be adjusted up to a preset air speed value so as to temporarily increase the air supply quantity and enable the system pressure to be reduced to a good state more quickly and stably. Wherein the preset wind speed value may be a medium wind speed.
And A3, if the exhaust temperature is more than or equal to the overrun temperature, controlling the compressor to stop, controlling a motor of an outdoor unit of the air conditioner to run at the maximum rotating speed, and controlling the indoor unit to stop.
It should be noted that when the exhaust temperature is greater than or equal to the overrun temperature, the compressor is not easy to continue to work, and the compressor is controlled to stop at the moment, so that the compressor can be prevented from being damaged; meanwhile, the motor of the outdoor unit is controlled to operate at the maximum rotating speed, so that the heat dissipation efficiency of the outdoor unit can be improved, and the exhaust temperature and the system pressure are reduced to a safe range as soon as possible. Because the compressor is stopped, the indoor unit is controlled to stop, cold air can be prevented from being blown into the indoor by the indoor unit in the heating mode, or hot air can be prevented from being blown into the indoor by the indoor unit in the cooling mode, and the user experience feeling can be conveniently ensured.
Specifically, the warning temperature can be selected as 90 ℃, the overload temperature can be selected as 95 ℃, the overrun temperature can be selected as 115 ℃, when the exhaust temperature is lower than 90 ℃, the system pressure is normal, and the variable frequency air conditioner can normally run in a user set mode; when the exhaust temperature is between 90 ℃ and 95 ℃, the system pressure enters an alert range, and the parameters of the compressor need to be adjusted in advance, so that the system pressure is prevented from continuously rising as much as possible; when the exhaust temperature is between 95 ℃ and 115 ℃, the system pressure enters an overload range, the parameters of the compressor need to be adjusted as soon as possible, and the air speed of the indoor unit is adjusted in a matching manner, so that the system pressure is reduced rapidly; when the exhaust temperature is more than or equal to 115 ℃, the system pressure is over-limited, and the compressor needs to be stopped and cooled as soon as possible to prevent the damage of the compressor.
And when the exhaust temperature is reduced to be lower than the warning temperature, the user set mode is restored to operate.
In step S104, it is preferable to acquire the discharge temperature of the air conditioner compressor when the wind speed of the indoor unit decreases from a high wind speed to the wind speed of the silent wind or the sleep wind. It should be noted that when the wind speed of the indoor unit drops from a higher wind speed to the wind speed of the silent wind or the sleeping wind, an abnormal shutdown phenomenon caused by sudden drop of the wind speed is more likely to occur, the program for acquiring the exhaust temperature of the compressor is operated on the basis of meeting the condition, and the program for acquiring the exhaust temperature is not required to be operated under other conditions, so that the electricity consumption is saved.
Of course, the program for acquiring the wind speed of the indoor unit of the air conditioner can also be set to operate when the user sends an instruction of operating the silent mode or the sleep mode to the air conditioner, and the program does not need to operate under other conditions, so that the electricity consumption is further saved. Specifically, as an implementation manner, when the wind speed of the indoor unit is obtained, the wind speed before the user sends an instruction and the current wind speed may be obtained from the air conditioner storage module; as another possible implementation manner, after the air conditioner receives the instruction of the mute mode or the sleep mode, the corresponding instruction is delayed to operate, at this time, the wind speed of the indoor unit can be directly acquired, and the signal indicating the decrease of the wind speed of the indoor unit can be directly identified.
Preferably, the operation frequency of the compressor may be further obtained, and if the operation frequency of the compressor is the maximum frequency and the wind speed of the indoor unit is decreased, the step of obtaining the exhaust temperature of the air-conditioning compressor in the step S104 is performed. It should be noted that, on the premise that the operating frequency of the compressor is the maximum frequency, the wind speed of the indoor unit decreases, which more easily causes the sudden increase of the system pressure, and the risk of abnormal shutdown is higher.
Fig. 2 is a schematic flowchart of a method for controlling an inverter air conditioning system according to an embodiment of the present invention, where the method includes:
s201, start.
And S202, acquiring the wind speed of the indoor unit of the air conditioner.
S203, if the air speed of the indoor unit is reduced, acquiring the exhaust temperature T of the compressor Row board 。
Specifically, under the condition of high-load and high-frequency operation of the air conditioner, whether the indoor unit is adjusted to the sleep mode or the mute mode or not can be judged, so that the wind speed is reduced, and if the wind speed is reduced, different control programs are respectively operated by judging the exhaust temperature of the compressor.
S204，T Row board And when the temperature is lower than 90 ℃, controlling the air conditioner to enter a user setting mode.
The user setting mode may be a silent mode, a sleep mode, or other modes.
S205，90℃≤T Row board When the temperature is lower than 95 ℃, the frequency limit of the environment temperature is adjusted to 50Hz, and the frequency increasing and decreasing rate of the first platform of the compressor is adjusted to 2s/Hz.
This state is maintained until T Row board < 90 ℃, after that, step S203 is executed.
S206，95℃≤T Row board When the temperature is lower than 115 ℃, the control proportion parameter of the speed ring of the compressor is adjusted to be 0.04, the frequency limit of the ambient temperature is adjusted to be 40Hz, the frequency increasing and decreasing rate of the first platform of the compressor is adjusted to be 0.5s/Hz, and the wind speed of the inner machine is controlled to be increased to the middle wind speed.
This state is maintained until T Row board < 90 ℃, after that, step S203 is executed.
S207，T Row board And when the temperature is more than or equal to 115 ℃, controlling the compressor to stop immediately, operating the outer machine at the maximum rotating speed to dissipate heat, and stopping the inner machine.
This state is maintained until T Row board < 90 ℃, after that, step S203 is executed.
And S208, ending.
Fig. 3 is a schematic structural diagram of a control device of an inverter air conditioning system according to an embodiment of the present invention, where the control device includes:
the first acquisition module 301 is used for acquiring the wind speed of the indoor unit of the air conditioner;
a second obtaining module 302, configured to obtain an exhaust temperature of the air conditioner compressor when a wind speed of the indoor unit decreases;
and the adjusting module 303 is configured to adjust the ambient temperature frequency limit of the compressor down when the exhaust temperature is greater than or equal to the warning temperature.
According to the control device of the variable frequency air conditioning system, the adjusting module can make prejudgment in advance when the pressure of the air conditioning system rises abnormally due to sudden drop of the air speed of the indoor unit, and can lower the frequency of the compressor in advance, so that the compressor can lower the frequency of stable operation earlier, the system is prevented from being shut down due to overvoltage protection or overtemperature protection to the greatest extent, user experience can be improved, the operation stability of the air conditioner can be improved, and the service life of the whole machine is prolonged.
Specifically, the adjusting module 303 may lower the ambient temperature frequency limit to a first frequency limit value and lower the frequency increase/decrease rate of the compressor to a first speed value when the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature.
The adjusting module 303 may also lower the ambient temperature limit frequency to a second limit frequency value and increase the frequency increase/decrease rate of the compressor to a second rate value when the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, where the first limit frequency value is greater than the second limit frequency value; and the speed loop control proportion of the compressor can be adjusted to a preset proportion value, and the wind speed of the indoor unit is adjusted to a preset wind speed value.
The adjusting module 303 may also control the compressor to stop, the motor of the outdoor unit of the air conditioner to operate at the maximum rotation speed, and the indoor unit to stop when the discharge temperature is greater than or equal to the over-limit temperature.
Specifically, the second obtaining module 302 can obtain the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit is reduced to the wind speed of the silent wind or the sleeping wind.
The inverter air conditioning system control device provided by the embodiment may further include a third obtaining module, configured to obtain an operating frequency of the compressor; at this time, the second obtaining module may obtain the exhaust temperature of the air conditioner compressor when the operation frequency is the maximum frequency and the wind speed of the indoor unit is decreased.
The embodiment also provides an air conditioner, which comprises a processor and a storage device; the storage means has stored thereon a computer program which, when executed by the processor, performs the above-described method.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the foregoing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A control method of a variable frequency air conditioning system is characterized by comprising the following steps:
acquiring the wind speed of an indoor unit of an air conditioner;
when the wind speed of the indoor unit is reduced, acquiring the exhaust temperature of an air conditioner compressor;
and if the exhaust temperature is greater than or equal to the warning temperature, adjusting the ambient temperature frequency limit of the compressor downwards.
2. The inverter air conditioning system control method according to claim 1, wherein the method comprises:
and if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, the ambient temperature frequency limit is adjusted downwards to a first frequency limit value, and the frequency increasing and reducing speed of the compressor is adjusted downwards to a first speed value.
3. The inverter air conditioning system control method according to claim 2, wherein the method comprises:
and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, down-regulating the ambient temperature frequency limit to a second frequency limit value, and up-regulating the frequency increasing and decreasing rate of the compressor to a second rate value, wherein the first frequency limit value is greater than the second frequency limit value.
4. The inverter air conditioning system control method of claim 3, further comprising:
and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, the speed loop control proportion of the compressor is adjusted upwards to a preset proportion value.
5. The inverter air conditioning system control method of claim 3, further comprising:
and if the exhaust temperature is greater than or equal to the overload temperature and less than the overrun temperature, the wind speed of the indoor unit is adjusted up to a preset wind speed value.
6. The inverter air conditioning system control method according to any one of claims 1 to 5, further comprising:
and if the exhaust temperature is greater than or equal to the over-limit temperature, controlling the compressor to stop, controlling a motor of an outdoor unit of the air conditioner to operate at the maximum rotating speed, and controlling the indoor unit to stop.
7. The inverter air-conditioning system control method according to any one of claims 1 to 5, wherein the step of obtaining the discharge temperature of an air-conditioning compressor when the wind speed of the indoor unit decreases comprises: when the wind speed of the indoor unit is reduced to the wind speed of silent wind or sleeping wind, acquiring the exhaust temperature of an air conditioner compressor;
and/or, the method further comprises: and acquiring the running frequency of the compressor, and if the running frequency is the maximum frequency and the wind speed of the indoor unit is reduced, executing the step of acquiring the exhaust temperature of the air-conditioning compressor.
8. The inverter air conditioning system control method according to any one of claims 3 to 5, wherein the warning temperature is 90 ℃, the overload temperature is 95 ℃, and the overrun temperature is 115 ℃;
and/or the first frequency limiting value is 50Hz, and the second frequency limiting value is 40Hz;
and/or the first speed value is 2s/Hz, and the second speed value is 0.5s/Hz.
9. The utility model provides a frequency conversion air conditioning system controlling means which characterized in that includes:
the first acquisition module is used for acquiring the wind speed of the indoor unit of the air conditioner;
the second acquisition module is used for acquiring the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit is reduced;
and the adjusting module is used for adjusting the ambient temperature frequency limit of the compressor downwards when the exhaust temperature is greater than or equal to the warning temperature.
10. The utility model provides a variable frequency air conditioner which characterized in that includes: a processor and a storage device; the storage device has stored thereon a computer program which, when executed by the processor, performs the method of any one of claims 1-8.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of the claims 1 to 8.
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