CN110081568B - Air conditioner, air conditioner control method and device and readable storage medium - Google Patents
Air conditioner, air conditioner control method and device and readable storage medium Download PDFInfo
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- CN110081568B CN110081568B CN201910431267.9A CN201910431267A CN110081568B CN 110081568 B CN110081568 B CN 110081568B CN 201910431267 A CN201910431267 A CN 201910431267A CN 110081568 B CN110081568 B CN 110081568B
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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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- 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
- F24F2140/50—Load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses an air conditioner control method, which comprises the following steps: acquiring the operating frequency of a compressor, the exhaust temperature of the compressor, the inlet temperature of an evaporator and the outlet temperature of the evaporator; when the operating frequency is greater than a preset frequency threshold value, judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature; if the rotating speed of the outdoor fan needs to be reduced, controlling the outdoor fan to reduce the current rotating speed; and if the rotating speed of the outdoor fan does not need to be reduced, adjusting the current rotating speed of the indoor fan according to the exhaust temperature. The invention also discloses an air conditioner control device, an air conditioner and a readable storage medium. The invention aims to improve the energy efficiency of a refrigeration system and increase the reliability of the operation of the system.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner control device, an air conditioner and a readable storage medium.
Background
With the development of technology, new refrigerants (such as R32 refrigerant) have been widely used due to their excellent performance. The injection amount of the novel refrigerant is less than that of the traditional refrigerant, and the reduction of the refrigerant injection amount can lead to the reduction of the whole refrigerant flow of the refrigerating system. Meanwhile, as the heat exchangers of the air conditioner are more and more compact, the demand for high-capacity output of the refrigeration system is gradually increased. In order to achieve high-capacity output of refrigeration, the air conditioner generally maintains the indoor fan and the outdoor fan to operate at high rotating speeds, and the rotating speed of the fan is generally maintained at the maximum rotating speed value so as to achieve the maximum heat exchange capacity. However, when the air conditioner performs refrigeration and evaporation, the flow of the refrigerant is small, and the fan keeps high-speed operation, so that the refrigeration system is in an overheat state during evaporation, the refrigerating capacity is increased weakly even if the frequency of the compressor is increased, the energy efficiency of the refrigeration system is poor, the exhaust temperature of the compressor is increased indirectly due to the evaporation overheat, and the reliability of the operation of the system is reduced.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, aiming at improving the energy efficiency of a refrigerating system and increasing the reliability of system operation.
In order to achieve the above object, the present invention provides an air conditioner control method, comprising the steps of:
acquiring the operating frequency of a compressor, the exhaust temperature of the compressor, the inlet temperature of an evaporator and the outlet temperature of the evaporator;
when the operating frequency is greater than a preset frequency threshold value, judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature;
if the rotating speed of the outdoor fan needs to be reduced, controlling the outdoor fan to reduce the current rotating speed;
and if the rotating speed of the outdoor fan does not need to be reduced, adjusting the rotating speed of the indoor fan according to the exhaust temperature.
Optionally, the step of adjusting the current rotation speed of the indoor fan according to the exhaust temperature includes:
judging whether the exhaust temperature is greater than or equal to a preset temperature threshold value or not;
if so, controlling the indoor fan to reduce the current rotating speed;
if not, controlling the indoor fan to maintain the current rotating speed.
Optionally, the step of controlling the indoor fan to reduce the current rotation speed includes:
obtaining an indoor fan adjustment coefficient;
determining the adjustment amplitude of the rotating speed of the indoor fan according to a first preset adjustment amplitude and the adjustment coefficient of the indoor fan, and taking the adjustment amplitude as a first target amplitude reduction;
and controlling the indoor fan to reduce the current rotating speed according to the first target adjustment amplitude.
Optionally, the step of obtaining an indoor fan adjustment coefficient includes:
and determining the adjustment coefficient of the indoor fan according to the exhaust temperature and the operating frequency.
Optionally, before the step of adjusting the current rotation speed of the indoor fan according to the exhaust temperature, the method further includes:
and controlling the outdoor fan to maintain the current rotating speed to operate.
Optionally, the step of controlling the outdoor fan to reduce the current rotation speed includes:
obtaining an adjustment coefficient of an outdoor fan;
determining the adjustment amplitude of the rotating speed of the outdoor fan as a second target adjustment amplitude according to a second preset adjustment amplitude and the adjustment coefficient of the outdoor fan;
and controlling the outdoor fan to reduce the current rotating speed according to the second target adjustment amplitude.
Optionally, the step of obtaining an outdoor fan adjustment coefficient includes:
determining a temperature difference value between the inlet temperature and the outlet temperature;
and determining the adjustment coefficient of the outdoor fan according to the temperature difference value.
Optionally, before the step of obtaining the current operating frequency of the compressor of the air conditioner, the discharge temperature of the compressor, the inlet temperature of the evaporator and the outlet temperature of the evaporator, the method further comprises:
acquiring the current power-on operation time length of the air conditioner;
and when the power-on operation time length is greater than or equal to the preset time length, executing the step of acquiring the operation frequency of the current compressor of the air conditioner, the exhaust temperature of the compressor, the inlet temperature of the evaporator and the outlet temperature of the evaporator.
Optionally, after the step of controlling the outdoor fan to reduce the current rotation speed, the method further includes:
acquiring a first number of times of current speed reduction operation of the outdoor fan;
determining a first target time length according to the first times and the preset time length;
when the power-on operation time length is longer than or equal to the first target time length, returning to execute the step of judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature; and/or the presence of a gas in the atmosphere,
after the step of controlling the indoor fan to reduce the current rotating speed, the method further comprises the following steps:
acquiring a second number of times of current speed reduction operation of the indoor fan;
determining a second target time length according to the second times and the preset time length;
and when the power-on operation time length is greater than or equal to the second target time length, returning to the step of judging whether the exhaust temperature is greater than or equal to a preset temperature threshold value.
Further, in order to achieve the above object, the present application also proposes an air conditioning control device including: the air conditioner control method comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method according to any one of the above items when being executed by the processor.
In addition, in order to achieve the above object, the present application also proposes an air conditioner including the air conditioning control device as described above.
Further, in order to achieve the above object, the present application also proposes a readable storage medium having stored thereon an air conditioning control program that, when executed by a processor, implements the steps of the air conditioning control method as recited in any one of the above.
According to the air conditioner control method provided by the embodiment of the invention, when the running frequency of the compressor is greater than the preset frequency threshold value, whether the rotating speed of the outdoor fan needs to be reduced or not is judged according to the inlet temperature of the evaporator and the outlet temperature of the evaporator, and if the rotating speed of the outdoor fan needs to be reduced, the rotating speed of the outdoor fan is reduced. The refrigeration output capacity of the refrigeration system is represented through the running frequency of the compressor, when the refrigeration output capacity is high, the outlet temperature and the inlet temperature of the comprehensive evaporator can accurately reflect whether the refrigeration system is overheated or not, the rotating speed of the outdoor fan is reduced when the rotating speed of the outdoor fan needs to be reduced under the condition, even if the refrigerant quantity of the refrigeration system is small when the refrigeration system is in high-capacity output running, the situation that the evaporator is in an overheated state due to the fact that the rotating speed of the outdoor fan is too high can be avoided, the system can achieve high refrigeration capacity, meanwhile, the rotating speed of the indoor fan is adjusted according to the exhaust temperature when the rotating speed of the outdoor fan does not need to be reduced, the situation that the exhaust temperature of the system is too high is effectively avoided, and.
Drawings
FIG. 1 is a schematic diagram of a hardware configuration of an embodiment of an air conditioning control apparatus according to the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of an air conditioning control method according to the present invention;
FIG. 3 is a flowchart illustrating a second embodiment of an air conditioning control method according to the present invention;
FIG. 4 is a flowchart illustrating a third embodiment of an air conditioning control method according to the present invention;
FIG. 5 is a flowchart illustrating a fourth embodiment of an air conditioning control method according to the present invention;
FIG. 6 is a flow chart illustrating a fifth embodiment of an air conditioning control method according to the present invention;
fig. 7 is a flowchart illustrating a sixth embodiment of an air conditioning control method according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring the operating frequency of a compressor, the exhaust temperature of the compressor, the inlet temperature of an evaporator and the outlet temperature of the evaporator; when the operating frequency is greater than a preset frequency threshold value, judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature; if the rotating speed of the outdoor fan needs to be reduced, controlling the outdoor fan to reduce the current rotating speed; and if the rotating speed of the outdoor fan does not need to be reduced, adjusting the current rotating speed of the indoor fan according to the exhaust temperature.
In the prior art, the problems of poor air conditioner energy efficiency and low reliability can occur when the refrigerating system has a small amount of refrigerant and is in high-energy output operation.
The present invention provides the above-described solution, and aims to improve the energy efficiency of the refrigeration system and increase the reliability of the system operation.
The invention provides an air conditioner control device which can be applied to a heat pump system such as an air conditioner with a refrigeration regulation function.
In an embodiment of the present invention, referring to fig. 1, an air conditioning control apparatus includes: the processor 1001 includes, for example, a CPU, a memory 1002, a temperature sensor 1003, a timer 1004, and the like. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
The temperature sensor 1003 may specifically include a first sensor, a second sensor and a third sensor, the first sensor may be disposed at an inlet of the evaporator to detect an inlet temperature of the evaporator; the second sensor can be arranged at the outlet of the evaporator to detect the outlet temperature of the evaporator; the third sensor is arranged at a refrigerant outlet of the compressor to detect the exhaust temperature of the compressor.
The timer 1004 is specifically configured to count a duration of continuous operation of the air conditioner after power-on and an interval duration of the indoor fan after speed reduction or the outdoor fan after speed reduction.
The processor 1001 is communicatively connected to the memory 1002, the temperature sensor 1003, and the timer 1004, respectively. The processor 1001 may obtain the temperature data collected by the temperature sensor 1003, the statistical time data from the timer 1004, and the timing data from the timer 1004. The temperature data, time data, adjustment coefficients, preset frequency thresholds, etc. obtained by the processor 1001 may also be stored in the memory 1002 as desired. Further, the processor 1001 may be connected to a control device of the compressor, the indoor fan and the outdoor fan to read the compressor operation frequency and the fan rotation speed.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1002, which is a readable storage medium, may include an air conditioner control program therein. In the apparatus shown in fig. 1, the processor 1001 may be configured to call an air-conditioning control program stored in the memory 1002, and perform operations of relevant steps of the air-conditioning control method in the following embodiments.
The invention further provides an air conditioner control method.
Referring to fig. 2, there is provided a first embodiment of an air conditioning control method of the present invention, including:
step S10, acquiring the running frequency of the compressor, the exhaust temperature of the compressor, the inlet temperature of the evaporator and the outlet temperature of the evaporator;
specifically, after the air conditioner is powered on or when the temperature set by the user is less than or equal to the preset temperature and the rotating speed is at the highest gear, the current operating mode of the air conditioner is obtained first, and when the operating mode is the cooling mode, the step S10 is executed. In addition, the rotating speed of the fan can be obtained as a reference value for rotating speed adjustment, and the rotating speed of the fan can specifically comprise the rotating speed of the outdoor fan and/or the rotating speed of the indoor fan.
The inlet temperature of the evaporator is a temperature value at the inlet of the evaporator; the outlet temperature of the evaporator is a temperature value at the outlet of the evaporator; the exhaust temperature is specifically the temperature value of the gaseous refrigerant at the outlet of the compressor.
Step S20, when the operating frequency is greater than a preset frequency threshold, judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature; if it is determined that the rotation speed of the outdoor fan needs to be reduced, step S30 is executed, and if it is determined that the rotation speed of the outdoor fan does not need to be reduced, step S40 is executed.
Here, the preset frequency threshold is a rated operation frequency of the compressor when the air conditioner is in a cooling operation. When the running frequency is less than or equal to the preset frequency threshold, the compressor can be controlled to maintain the current running frequency, and the outdoor fan is controlled to maintain the current rotating speed to run.
Specifically, the degree of superheat in the evaporator can be calculated according to the inlet temperature and the outlet temperature, and whether the rotating speed of the outdoor fan needs to be reduced or not is judged according to the degree of superheat. When the superheat degree is larger than or equal to a preset threshold value, the evaporator is in a superheat state with low energy efficiency, and the rotating speed of the outdoor fan is judged to need to be reduced; and when the superheat degree is smaller than the preset threshold value, the evaporator is not in an overheat state, and the rotating speed of the outdoor fan is judged not to need to be reduced. In addition, whether the rotating speed of the outdoor fan needs to be reduced can be judged according to the temperature difference or the size relation between the inlet temperature of the evaporator and the outlet temperature of the evaporator.
Step S30, controlling the outdoor fan to reduce the current rotating speed;
specifically, the rotating speed of the outdoor fan can be directly reduced to a preset rotating speed, and the rotating speed of the fan can also be reduced according to the reduction of the preset rotating speed.
And step S40, adjusting the current rotating speed of the indoor fan according to the exhaust temperature.
Specifically, the indoor fan can be controlled to maintain the current rotating speed to operate or reduce the current rotating speed to operate according to the exhaust temperature
According to the air conditioner control method provided by the embodiment of the invention, when the running frequency of the compressor is greater than the preset frequency threshold value, whether the rotating speed of the outdoor fan needs to be reduced or not is judged according to the inlet temperature of the evaporator and the outlet temperature of the evaporator, and if the rotating speed of the outdoor fan needs to be reduced, the rotating speed of the outdoor fan is reduced. The refrigeration output capacity of the refrigeration system is represented through the running frequency of the compressor, when the refrigeration output capacity is high, the outlet temperature and the inlet temperature of the comprehensive evaporator can accurately reflect whether the refrigeration system is overheated or not, the rotating speed of the outdoor fan is reduced when the rotating speed of the outdoor fan needs to be reduced under the condition, even if the refrigerant quantity of the refrigeration system is small when the refrigeration system is in high-capacity output running, the situation that the evaporator is in an overheated state due to the fact that the rotating speed of the outdoor fan is too high can be avoided, the system can achieve high refrigeration capacity, meanwhile, the rotating speed of the indoor fan is adjusted according to the exhaust temperature when the rotating speed of the outdoor fan does not need to be reduced, the situation that the exhaust temperature of the system is too high is effectively avoided, and.
Further, in the first embodiment, before the step S10 is executed, the method may further include the step S01 of obtaining a current power-on operation duration of the air conditioner, the step S02 of determining whether the power-on operation duration is greater than or equal to a preset duration, and when the power-on operation duration is greater than or equal to the preset duration, the step S10 is executed. The preset time can be determined according to the refrigeration output efficiency of the air conditioner. The step S10 is executed when the power-on operation time of the air conditioner reaches a first preset time, so that the refrigeration system is ensured to be in a stable operation state, the rotating speed is reduced when each part in the refrigeration system does not reach the output capacity required by the heat exchange requirement, the heat exchange efficiency of the air conditioner during starting is influenced, the accuracy of rotating speed regulation is ensured, and the energy efficiency and the operation reliability of the air conditioner are improved.
Further, based on the first embodiment, a second embodiment of the air conditioner control method is provided. In the second embodiment, referring to fig. 3, the step S40 includes:
step S41, judging whether the exhaust temperature is larger than or equal to a preset temperature threshold value;
if so, go to step S42, otherwise, go to step S43.
Step S42, controlling the indoor fan to reduce the current rotating speed;
specifically, the rotating speed of the indoor fan can be directly reduced to a preset rotating speed, and the current rotating speed of the indoor fan can also be reduced according to a preset frequency.
And step S43, controlling the indoor fan to maintain the current rotating speed.
In this embodiment, when the exhaust temperature of the compressor is too high, the rotation speed of the indoor fan is reduced, and the return air temperature of the compressor is reduced, so that the exhaust temperature of the compressor is reduced, and the operation reliability of the refrigeration system is improved.
Specifically, in the second embodiment, after the step S40, before the steps S41, S42 and S43 are executed, the step S401 may be executed to control the outdoor fan to maintain the current rotation speed, so as to ensure that the outdoor fan is in a high output state as much as possible and ensure the heat exchange capability of the refrigeration system on the premise of not affecting the energy efficiency of the air conditioner.
Further, based on the second embodiment, a third embodiment of the air conditioner control method of the present application is proposed. In the third embodiment, referring to fig. 4, the step S42 includes:
step S421, obtaining an indoor fan adjusting coefficient;
the indoor fan adjusting coefficient can have different values according to different operation state adaptability of the air conditioner. Specifically, the corresponding indoor fan adjustment coefficient may be determined according to the current discharge temperature of the compressor. Different temperature intervals correspond to different indoor fan adjustment coefficients, and the higher the exhaust temperature is, the higher the corresponding indoor fan adjustment coefficient is.
In addition, the indoor fan adjusting coefficient can be further determined according to the exhaust temperature and the current operation frequency of the compressor. Different exhaust temperatures and different operating frequencies correspond to different indoor fan adjustment coefficients. The higher the exhaust temperature is, the higher the operating frequency is, and the larger the corresponding indoor fan adjustment coefficient is. For example, the ratio of the product of the exhaust temperature and the operating frequency to a preset parameter may be used as the first target adjustment parameter.
In addition, the corresponding indoor fan adjusting coefficient can be further obtained by combining the exhaust temperature, the current running frequency of the compressor and the temperature difference value of the inlet temperature and the outlet temperature of the evaporator, so that the adjustment is more accurate
Step S422, determining the adjusting amplitude of the rotating speed of the indoor fan as a first target adjusting amplitude according to a first preset adjusting amplitude and the adjusting coefficient of the indoor fan;
the first preset adjustment range is specifically an adjustment range of the indoor fan under a set working condition (such as set exhaust temperature, set frequency, set adjustment times, current rotating speed of the indoor or outdoor fan, and the like) according to a large amount of data analysis. The indoor fan adjustment coefficient is adapted to a first preset adjustment range acquired by the indoor fan under the current working condition (such as the current exhaust temperature, the current frequency, the current adjustment times, the current rotating speed of the indoor or outdoor fan and the like) so as to obtain a target adjustment range of the indoor fan.
The product of the first preset adjustment amplitude and the indoor fan adjustment coefficient may be used as a first target adjustment amplitude.
And step S423, controlling the indoor fan to reduce the current rotating speed according to the first target adjustment amplitude.
And acquiring the current rotating speed of the indoor fan, subtracting the first target adjustment amplitude from the current rotating speed of the indoor fan to obtain a first target rotating speed, and controlling the indoor fan to operate according to the first target rotating speed.
In this embodiment, the first target adjustment range is determined by combining the first preset adjustment range and the indoor fan adjustment coefficient, so that the air conditioner can have better refrigeration output capacity while the exhaust temperature is reduced after the rotation speed of the indoor fan is reduced. The indoor fan adjusting coefficient is determined according to the exhaust temperature and the operating frequency and even the temperature difference value between the inlet temperature and the outlet temperature of the evaporator is further integrated, so that the indoor fan can adapt to the operation of the compressor, the exhaust temperature is coordinately adjusted, the rotating speed of the indoor fan can be adjusted to adapt to the operating condition of the current refrigerating system, the adjustment is more accurate, and the energy efficiency and the reliability of the refrigerating system are further improved.
Further, based on any of the above embodiments, a fourth embodiment of the air conditioner control method of the present application is provided. In a fourth embodiment, referring to fig. 5, the step of controlling the outdoor fan to reduce the current rotation speed includes:
step S31, obtaining an outdoor fan adjustment coefficient;
the adjustment coefficient of the outdoor fan can have different values according to the adaptability of different running states of the air conditioner. For example, the corresponding outdoor fan adjustment coefficient can be obtained according to the temperature difference between the current inlet temperature and the current outlet temperature of the evaporator, different temperature differences correspond to different outdoor fan adjustment coefficients, and the larger the temperature difference is, the larger the corresponding outdoor fan adjustment coefficient can be.
Step S32, determining the adjusting amplitude of the rotating speed of the outdoor fan as a second target adjusting amplitude according to a second preset adjusting amplitude and the adjusting coefficient of the outdoor fan;
the second preset adjustment range is specifically an adjustment range of the outdoor fan under a set working condition (such as set exhaust temperature, set frequency, set adjustment times, current rotating speed of the indoor or outdoor fan, and the like) according to a large amount of data analysis. The outdoor fan adjustment coefficient is adapted to the second preset adjustment range acquired by the outdoor fan under the current working condition (such as the current exhaust temperature, the current frequency, the current adjustment times, the current rotating speed of the indoor or outdoor fan and the like) so as to obtain the target adjustment range of the outdoor fan.
The product of the second preset adjustment amplitude and the outdoor fan adjustment coefficient may be used as a second target adjustment amplitude.
And step S33, controlling the outdoor fan to reduce the current rotating speed according to the second target adjustment amplitude.
And the current rotating speed of the outdoor fan is obtained, the target rotating speed of the outdoor fan is obtained by directly subtracting the corresponding target reduction amplitude from the current rotating speed, and the outdoor fan is controlled to operate according to the target rotating speed so as to reduce the rotating speed of the outdoor fan.
In this embodiment, the adjustment range of the rotation speed of the outdoor fan is determined according to the second preset adjustment range and the adjustment coefficient of the outdoor fan, so that the energy efficiency of the air conditioner can be improved after the rotation speed of the outdoor fan is reduced.
Further, based on any of the above embodiments, a fifth embodiment of the air conditioner control method of the present application is provided. In a fifth embodiment, referring to fig. 6, the step of obtaining an outdoor fan adjustment coefficient includes:
step S311, determining a temperature difference value between the inlet temperature and the outlet temperature;
and step S312, determining the adjustment coefficient of the outdoor fan according to the temperature difference value.
Specifically, the larger the temperature difference value is, the larger the corresponding adjustment coefficient of the outdoor fan is. The corresponding outdoor fan adjustment coefficients can be determined according to the temperature intervals where the temperature difference values are located, and different temperature intervals correspond to different outdoor fan adjustment coefficients. In addition, the adjustment coefficient of the outdoor fan can be further determined according to the temperature difference value and the operating frequency.
By the mode, the rotating speed of the outdoor fan can be adjusted according to the current evaporation overheating condition of the refrigerating system, if the outdoor fan is seriously overheated, the reduction range of the outdoor fan is correspondingly large, and if the outdoor fan is not seriously overheated, the reduction range of the outdoor fan is correspondingly small, so that the rotating speed of the outdoor fan is adjusted more accurately and rapidly.
Further, based on any of the above embodiments, a sixth embodiment of the air conditioner control method according to the present application is provided. In a sixth embodiment, referring to fig. 7, after the step of controlling the outdoor fan to decrease the current rotation speed, the method further includes:
step S50, acquiring a first number of times of current speed reduction operation of the outdoor fan;
after the air conditioner is powered on or an initialization instruction is received, clearing the data in the counter corresponding to the outdoor fan, when the rotating speed of the outdoor fan needs to be reduced according to the steps S10 to S20, accumulating the data in the counter corresponding to the outdoor fan once, and reading the data of the counter to obtain the first time.
Step S60, determining a first target time length according to the first times and the preset time length;
the product of the first times and the preset time length is the first target time length.
When the power-on operation time length is longer than or equal to the first target time length, returning to execute the step of judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature;
and/or the presence of a gas in the atmosphere,
after the step of controlling the indoor fan to reduce the current rotating speed, the method further comprises the following steps:
step S70, acquiring a second number of times of current speed reduction operation of the indoor fan;
after the air conditioner is powered on or an initialization instruction is received, clearing the data in the counter corresponding to the indoor fan, when the rotating speed of the outdoor fan does not need to be reduced according to the steps S10 to S40 and the exhaust temperature is larger than or equal to the preset temperature threshold value, accumulating the data in the counter corresponding to the indoor fan once, and reading the data of the counter to obtain a second number.
Step S80, determining a second target time length according to the second times and the preset time length;
and taking the product of the second times and the preset time length as a second target time length.
And when the power-on operation time length is greater than or equal to the second target time length, returning to the step of judging whether the exhaust temperature is greater than or equal to a preset temperature threshold value.
Through the mode, the energy efficiency condition of the air conditioner can be continuously monitored, and the rotating speed of the outdoor fan can be adaptively adjusted. The rotating speed of the outdoor fan can be gradually reduced when the energy efficiency of the air conditioner is poor, or the rotating speed of the indoor fan is gradually reduced when the exhaust temperature is too high, so that a more accurate rotating speed value is obtained, the energy efficiency and the reliability of the air conditioner are improved, and the heat exchange capacity of the air conditioner is ensured to be as large as possible.
In addition, the indoor fan adjusting coefficient can be determined according to the first time number, and the outdoor fan adjusting coefficient can be determined according to the second time number. The larger the first time is, the smaller the adjustment coefficient of the indoor fan is; the larger the second time is, the smaller the adjustment coefficient of the outdoor fan is, so that the amplitude reduction adaptability of the indoor fan or the outdoor fan is adjusted by the current adjustment times, the rotation speed of the outdoor fan or the indoor fan is adjusted more accurately, the high output capacity of the refrigerating system is ensured, and meanwhile, the better energy efficiency is achieved.
In addition, the embodiment of the invention also provides an air conditioner, which comprises an outdoor fan, an indoor fan, a compressor and the air conditioner control device in the embodiment. The air conditioner control device is respectively connected with the outdoor fan, the indoor fan, the compressor and the like, so as to obtain the operation data of each component and control the operation of the component according to the relevant steps in any embodiment of the air conditioner control method.
In addition, an embodiment of the present invention further provides a readable storage medium, where an air conditioning control program is stored, and the air conditioning control program, when executed by a processor, implements the relevant steps of any of the above air conditioning control methods.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. An air conditioner control method is characterized by comprising the following steps:
acquiring the operating frequency of a compressor, the exhaust temperature of the compressor, the inlet temperature of an evaporator and the outlet temperature of the evaporator;
when the operating frequency is greater than a preset frequency threshold value, judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature;
the judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature comprises the following steps: calculating a degree of superheat in the evaporator from the inlet temperature and the outlet temperature; when the superheat degree is larger than or equal to a preset threshold value, judging that the rotating speed of the outdoor fan needs to be reduced; when the superheat degree is smaller than a preset threshold value, judging that the rotating speed of the outdoor fan does not need to be reduced;
if the rotating speed of the outdoor fan needs to be reduced, controlling the outdoor fan to reduce the current rotating speed;
and if the rotating speed of the outdoor fan does not need to be reduced, adjusting the rotating speed of the indoor fan according to the exhaust temperature.
2. The air conditioning control method of claim 1, wherein the step of adjusting the current rotation speed of the indoor fan according to the discharge air temperature comprises:
judging whether the exhaust temperature is greater than or equal to a preset temperature threshold value or not;
if so, controlling the indoor fan to reduce the current rotating speed;
if not, controlling the indoor fan to maintain the current rotating speed.
3. The air conditioning control method as claimed in claim 2, wherein the step of controlling the indoor fan to reduce the current rotation speed comprises:
obtaining an indoor fan adjustment coefficient;
determining the adjustment amplitude of the rotating speed of the indoor fan as a first target adjustment amplitude according to a first preset adjustment amplitude and the adjustment coefficient of the indoor fan;
and controlling the indoor fan to reduce the current rotating speed according to the first target adjustment amplitude.
4. The air conditioning control method according to claim 3, wherein the step of obtaining the indoor fan adjustment coefficient includes:
and determining the adjustment coefficient of the indoor fan according to the exhaust temperature and the operating frequency.
5. The air conditioning control method according to claim 2, characterized by further comprising, before the step of adjusting the current rotation speed of the indoor fan according to the discharge air temperature:
and controlling the outdoor fan to maintain the current rotating speed to operate.
6. The air conditioner controlling method as claimed in claim 1, wherein the step of controlling the outdoor fan to reduce the current rotation speed comprises:
obtaining an adjustment coefficient of an outdoor fan;
determining the adjustment amplitude of the rotating speed of the outdoor fan as a second target adjustment amplitude according to a second preset adjustment amplitude and the adjustment coefficient of the outdoor fan;
and controlling the outdoor fan to reduce the current rotating speed according to the second target adjustment amplitude.
7. The air conditioner control method as claimed in claim 6, wherein the step of obtaining the outdoor fan adjustment coefficient includes:
determining a temperature difference value between the inlet temperature and the outlet temperature;
and determining the adjustment coefficient of the outdoor fan according to the temperature difference value.
8. The air conditioner control method as claimed in any one of claims 2 to 7, further comprising, before the step of obtaining the current operating frequency of the compressor of the air conditioner, the discharge temperature of the compressor, the inlet temperature of the evaporator and the outlet temperature of the evaporator:
acquiring the current power-on operation time length of the air conditioner;
and when the power-on operation time length is greater than or equal to the preset time length, executing the step of acquiring the operation frequency of the current compressor of the air conditioner, the exhaust temperature of the compressor, the inlet temperature of the evaporator and the outlet temperature of the evaporator.
9. The air conditioner controlling method as claimed in claim 8, further comprising, after the step of controlling the outdoor fan to reduce the current rotation speed:
acquiring a first number of times of current speed reduction operation of the outdoor fan;
determining a first target time length according to the first times and the preset time length;
when the power-on operation time length is longer than or equal to the first target time length, returning to execute the step of judging whether the rotating speed of the outdoor fan needs to be reduced or not according to the inlet temperature and the outlet temperature; and/or the presence of a gas in the atmosphere,
after the step of controlling the indoor fan to reduce the current rotating speed, the method further comprises the following steps:
acquiring a second number of times of current speed reduction operation of the indoor fan;
determining a second target time length according to the second times and the preset time length;
and when the power-on operation time length is greater than or equal to the second target time length, returning to the step of judging whether the exhaust temperature is greater than or equal to a preset temperature threshold value.
10. An air conditioning control device characterized by comprising: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program when executed by the processor implementing the steps of the air conditioning control method of any one of claims 1 to 9.
11. An air conditioner characterized by comprising the air conditioning control device according to claim 10.
12. A readable storage medium, characterized in that the readable storage medium has stored thereon an air-conditioning control program which, when executed by a processor, implements the steps of the air-conditioning control method according to any one of claims 1 to 9.
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| CN110779188A (en) * | 2019-11-05 | 2020-02-11 | 中国扬子集团滁州扬子空调器有限公司 | Control method for improving high-load operation performance of air conditioner refrigeration |
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| CN114056044B (en) * | 2021-11-15 | 2024-06-21 | 广东美的制冷设备有限公司 | Control method and operation control device of parking air conditioner and air conditioner |
| CN114353299B (en) * | 2021-12-07 | 2023-06-16 | 珠海格力电器股份有限公司 | Control method of air conditioning system and air conditioning system |
| CN114279056B (en) * | 2021-12-29 | 2023-05-23 | 青岛海信日立空调系统有限公司 | Machine room air conditioner |
| CN116045497B (en) * | 2023-03-06 | 2024-08-16 | 珠海格力电器股份有限公司 | Self-adaptive control method for portable air conditioner, portable air conditioner and computer readable storage medium |
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