CN111023499A - Air conditioner operation control method, device, equipment and storage medium - Google Patents
Air conditioner operation control method, device, equipment and storage medium Download PDFInfo
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- CN111023499A CN111023499A CN201911309425.XA CN201911309425A CN111023499A CN 111023499 A CN111023499 A CN 111023499A CN 201911309425 A CN201911309425 A CN 201911309425A CN 111023499 A CN111023499 A CN 111023499A
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- air conditioner
- rotating speed
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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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- 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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- 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
Abstract
The invention provides an air conditioner operation control method, an air conditioner operation control device, air conditioner operation control equipment and a storage medium, wherein the air conditioner operation control method comprises the following steps: acquiring the temperature of an outdoor coil pipe; judging whether the temperature of the outdoor coil pipe is greater than a preset first threshold value or not, and if so, controlling a compressor to reduce the frequency; acquiring the current operating frequency of a compressor, and judging whether the air conditioner meets a first preset condition, wherein the first preset condition is that the current outdoor coil temperature is greater than a preset first threshold value, and the current operating frequency of the compressor is the minimum operating frequency; if so, controlling the outdoor fan to increase the rotating speed, and/or controlling the indoor fan to decrease the rotating speed. The invention realizes the reduction of the unit operation pressure and achieves the purpose of improving the refrigeration operation reliability of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner operation control method, device, equipment and storage medium.
Background
The heat exchange effect of the outdoor heat exchanger of the air conditioner directly influences the refrigeration operation reliability of the air conditioner. The heat exchange effect of the outdoor heat exchanger of the air conditioner is poor, and the outdoor heat exchanger of the air conditioner usually has external factors such as environment and the like, for example, the installation environment such as dust accumulation, a shutter cover and the like is poor, the environment such as the actual temperature of the environment is high, and the like, and internal factors such as filth blockage, leakage and the like also exist. The poor heat exchange effect can cause the pipeline pressure of the air conditioning system to rise, and the temperature sensing parts such as the compressor/the complete machine and the like have high-temperature shutdown, for example, the temperature of the outdoor coil pipe may exceed the temperature value when the air conditioner normally operates.
At present, when the temperature of the outdoor coil pipe is detected to be greater than a certain value, the frequency of the compressor is reduced. However, the temperature of the air conditioner cannot be effectively reduced only by reducing the frequency of the compressor, and the air conditioner is easy to be shut down under high temperature protection, so that the use experience of a user is influenced.
Disclosure of Invention
The invention solves the problems that the air conditioner has poor operation reliability, high-temperature protection shutdown is easy to occur and user experience is influenced due to poor heat exchange of an air conditioner outdoor unit in the using process of the air conditioner.
In order to solve the above problems, the present invention provides an air conditioner operation control method, including:
acquiring the temperature of an outdoor coil pipe; judging whether the temperature of the outdoor coil pipe is greater than a preset first threshold value or not; if yes, controlling the compressor to reduce the frequency; acquiring the current operating frequency of a compressor, and judging whether the air conditioner meets a first preset condition, wherein the first preset condition is that the current outdoor coil temperature is greater than a preset first threshold value, and the current operating frequency of the compressor is the minimum operating frequency; if so, controlling the outdoor fan to increase the rotating speed, and/or controlling the indoor fan to decrease the rotating speed.
The reliability of the air conditioner is judged through the temperature of the outdoor coil, when the temperature of the outdoor coil is larger than a preset first threshold value, the condition that the air conditioner has high pressure and high temperature is indicated, the reliability is poor, and at the moment, the temperature reduction and the pressure reduction are realized through frequency reduction. After the compressor reduces the frequency, whether the air conditioner meets the condition that the temperature of the outdoor coil is greater than a preset first threshold value or not is judged, and the current operating frequency of the compressor is the minimum operating frequency, so that whether the air conditioner reduces the frequency to a limit value or not can not enable the air conditioner to recover to normal and can not continue to reach the limit value through frequency reduction is judged, if yes, the rotating speed of the fan is controlled to further promote temperature reduction and pressure reduction, and the threshold value of the refrigeration operation reliability of the air conditioner is improved.
Optionally, after controlling the outdoor fan to increase the rotation speed and/or controlling the indoor fan to decrease the rotation speed, the method further includes:
judging whether the current outdoor coil temperature is greater than the first threshold value;
if so, judging whether a fan of the air conditioner meets a second preset condition, wherein the second preset condition comprises at least one of a first condition and a second condition, the first condition is that the outdoor fan is smaller than a preset maximum rotating speed, and the second condition is that the indoor fan is larger than a preset minimum rotating speed; and if so, returning to the step of controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed.
By judging the fan rotating speed adjustment limit value, whether the fan rotating speed is continuously controlled to realize cooling and pressure reduction is determined, and a certain air conditioning effect is further ensured.
Optionally, after determining whether the fan of the air conditioner satisfies a second preset condition, the method includes:
if the fan of the air conditioner does not meet the second preset condition, judging whether the current outdoor coil temperature is greater than a preset second threshold value, wherein the second threshold value is greater than the first threshold value; and if so, controlling the air conditioner to stop.
The condition that the air conditioner is at dangerous temperature is identified through the current outdoor coil temperature, the air conditioner is controlled to stop in time when the air conditioning system is damaged, and the safe operation of the air conditioner is guaranteed.
Optionally, after determining whether the air conditioner satisfies a first preset condition, the method further includes:
and if the air conditioner does not meet the first preset condition, returning to the step of judging whether the temperature of the outdoor coil is greater than a preset first threshold value.
The effect of reducing the pressure which can be achieved by frequency reduction is larger than the action of a fan, the internal pressure of the air-conditioning system is large, the frequency of the compressor can be adjusted to directly act inside the air-conditioning system, and the control effect is quicker and more remarkable, so that when the air conditioner does not meet a first preset condition, the frequency of the compressor is continuously controlled to realize temperature reduction and pressure reduction, and a better control effect is obtained.
Optionally, the controlling the outdoor fan to increase the rotation speed, and/or controlling the indoor fan to decrease the rotation speed includes:
acquiring the current rotating speed of the outdoor fan, judging whether the current rotating speed of the outdoor fan is less than a preset maximum rotating speed or not, and if so, controlling the outdoor fan to increase the rotating speed;
and/or the presence of a gas in the gas,
and acquiring the current rotating speed of the indoor fan, judging whether the current rotating speed of the indoor fan is greater than a preset minimum rotating speed, and if so, controlling the indoor fan to reduce the rotating speed.
By judging the fan rotating speed adjustment limit value, whether the fan rotating speed is continuously controlled to realize cooling and pressure reduction is determined, and a certain air conditioning effect is further ensured.
Optionally, the controlling the outdoor fan to increase the rotation speed, and/or controlling the indoor fan to decrease the rotation speed includes:
controlling the outdoor fan to increase the rotating speed;
after the outdoor fan increases the first preset time of the rotating speed, judging whether the current outdoor coil temperature is greater than the first threshold value or not;
and if so, controlling the indoor fan to reduce the rotating speed.
By firstly adjusting the rotating speed of the outdoor fan and then adjusting the rotating speed of the indoor fan, the possibility of influencing the user experience can be reduced as much as possible, and the comfortable air conditioning experience of the user is ensured.
Optionally, the controlling the compressor to frequency down further includes:
and after waiting for a second preset time, executing the steps of acquiring the current operating frequency of the compressor and judging whether the air conditioner meets a first preset condition.
The data accuracy can be improved, and the accuracy of subsequent control is further improved.
The present invention also provides an air conditioner operation control device, including:
the acquisition unit is used for acquiring the temperature of the outdoor coil;
the judging unit is used for judging whether the temperature of the outdoor coil pipe is greater than a preset first threshold value or not;
the control unit is used for controlling the compressor to reduce the frequency if the temperature of the outdoor coil pipe is greater than a preset first threshold value;
the judging unit is further configured to obtain a current operating frequency of the compressor, and judge whether the air conditioner meets a first preset condition, where the first preset condition is that a current outdoor coil temperature is greater than a preset first threshold, and the current operating frequency of the compressor is a minimum operating frequency;
and the control unit is also used for controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed if the air conditioner meets a first preset condition.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the air conditioner running control method.
The present invention also provides a computer-readable storage medium, comprising: the computer-readable storage medium stores a computer program that, when read and executed by a processor, implements the air conditioner operation control method as described above.
Drawings
FIG. 1 is a schematic view of an embodiment of an air conditioner operation control method according to the present invention;
FIG. 2 is a schematic view of another embodiment of an air conditioner operation control method according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of the step S50 of the method for controlling the operation of an air conditioner according to the present invention;
FIG. 4 is a schematic diagram illustrating an embodiment of an operation control method of an air conditioner according to the present invention;
FIG. 5 is a schematic view of an embodiment of an air conditioner operation control apparatus according to the present invention;
fig. 6 is a schematic view of an air conditioner according to an embodiment of the present invention.
Description of reference numerals:
101-acquisition unit, 102-determination unit, 103-control unit, 201-computer-readable storage medium, 202-processor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The invention provides an air conditioner operation control method. Fig. 1 is a schematic view of an embodiment of an air conditioner operation control method according to the present invention.
As shown in fig. 1, the air conditioner operation control method includes:
step S10, acquiring the temperature of the outdoor coil;
after the air conditioner is started and operated for a period of time, the temperature of the outdoor coil can be acquired at preset time intervals, and the reliability of the air conditioner is judged, namely the judgment and control operations of the steps S20-S50 are executed. Alternatively, after a period of time (e.g., after 30-40 min) after executing the control program corresponding to the air conditioner operation control method of the present invention, the air conditioner may execute the control program corresponding to the air conditioner operation control method again, that is, execute the obtaining, determining and controlling operations of steps S10-S50.
To improve accuracy, the temperature of the outdoor coil may be averaged over a number of samples, for example, over 60 consecutive samples. The sampling temperature at the current time can also be directly obtained.
Step S20, judging whether the temperature of the outdoor coil pipe is larger than a preset first threshold value;
after the outdoor coil temperature is obtained, the outdoor coil temperature can be compared with a preset first threshold value; if the temperature of the outdoor coil is less than or equal to a preset first threshold value, the air conditioner has certain reliability at present, and cooling regulation and control are not needed, the air conditioner can continue to operate according to the last action, namely, the normal control operation of the air conditioner is recovered; if the outdoor coil temperature is greater than the first threshold, step S20 is executed.
After the outdoor coil temperature is obtained, whether the air conditioner meets the condition that the temperature is larger than the first threshold value can be directly judged, if yes, the step S20 is executed, and if not, the outdoor coil temperature is continuously obtained or the original normal control operation of the air conditioner is recovered.
Step S30, if the temperature of the outdoor coil pipe is larger than a preset first threshold value, controlling the compressor to reduce the frequency;
when the temperature of the outdoor coil is greater than a preset first threshold value, the current reliability of the air conditioner is poor, the temperature of the outdoor coil is high, and the air conditioner needs to be cooled and regulated. Therefore, the air conditioner is controlled to reduce the frequency, the temperature and the pressure. Wherein, the first threshold value can be selected from 55 ℃ to 56 ℃ and can be preset in the air conditioner.
And controlling the compressor to perform frequency reduction, wherein the compressor can be controlled to perform frequency reduction with a preset amplitude, the preset amplitude can be a specific frequency value, such as 10HZ and 30HZ, or a fixed ratio of the current frequency or a ratio of the maximum operating frequency of the compressor, such as 70%, 50%, 30% and the like, and if the frequency value calculated by reducing the preset amplitude is smaller than the minimum operating frequency of the compressor, the compressor is controlled to perform frequency reduction to the minimum operating frequency of the compressor. The compressor can also be controlled to directly decrease to the minimum operating frequency of the compressor.
After the compressor is controlled to perform frequency reduction, the air conditioner operates in a frequency reduction mode, the temperature of the outdoor coil pipe is reduced, but a certain time is required for the frequency reduction and temperature reduction, so that in order to improve the data accuracy and improve the accuracy of subsequent control, the step S40 can be executed after the compressor waits for a second preset time period, for example, 2-4min after the frequency reduction.
Step S40, obtaining the current running frequency of the compressor, and judging whether the air conditioner meets a first preset condition, wherein the first preset condition is that the current outdoor coil temperature is greater than a preset first threshold value, and the current running frequency of the compressor is the minimum running frequency;
if the current outdoor coil temperature is greater than the first threshold value and the current operation frequency of the compressor is the minimum operation frequency, it indicates that the temperature of the outdoor coil still cannot be reduced when the compressor decreases to the limit value, and at this time, the rotation speed of the fan needs to be controlled to reduce the temperature and the pressure, that is, step S50 is executed.
If the current temperature of the outdoor coil is less than or equal to the first threshold value, the air conditioner is indicated to be cooled smoothly through frequency reduction, and at the moment, the operation reliability of the air conditioner is enhanced without controlling a fan to cool and reduce the voltage or enhance the operation reliability of the air conditioner; if the current operating frequency of the compressor is not the minimum operating frequency, the air conditioner still has a frequency reduction allowance, the temperature reduction and pressure reduction control can be further realized through frequency reduction, the temperature reduction and pressure reduction of the fan are not required to be controlled, the pressure reduction effect achieved by frequency reduction is larger than the action of the fan, the internal pressure of the air conditioning system is large, the adjustment of the frequency of the compressor can be directly acted inside the air conditioning system, and the control effect is quicker and more remarkable.
Upon determining that the air conditioner does not satisfy the first preset condition, the method may return to perform steps S20-S40 by reacquiring the outdoor coil temperature and determining whether the outdoor coil temperature is greater than the first threshold. And when the temperature of the outdoor coil is less than or equal to the first threshold value, recovering the normal control of the air conditioner, and finishing the control. When the temperature of the outdoor coil is greater than the first threshold, the compressor is controlled to perform a frequency reduction operation, and the compressor can be controlled to perform the frequency reduction operation with a preset amplitude, where the preset amplitude is explained as described above and is not described herein again.
And step S50, if yes, controlling the outdoor fan to increase the rotating speed, and/or controlling the indoor fan to decrease the rotating speed.
The rotating speed of the outdoor fan is controlled to be increased, namely the rotating speed (or a windshield) of the outdoor fan is increased to increase the air quantity of the outdoor unit, so that the outdoor heat exchange is improved, and the condensation temperature of the refrigeration cycle of the air conditioner is reduced. The indoor fan is controlled to reduce the rotating speed, namely the rotating speed (or a windshield) of the indoor side fan is reduced to inhibit indoor side heat exchange and reduce the evaporation temperature of the refrigeration cycle of the air conditioner. Therefore, the running pressure of the unit is reduced, and the purpose of improving the refrigeration running reliability of the air conditioner is achieved.
The rotating speed of the outdoor unit is controlled to be increased, the preset wind speed Rt can be increased, the preset wind speed Rt is a preset value and can be selected to be 50r/min, a wind gear can also be directly increased, the rotating speed of the indoor unit is controlled to be reduced, the preset wind speed Rw can be reduced, the preset wind speed Rw is a preset value and can be selected to be 50r/min, and a wind gear can also be directly reduced.
In an optional embodiment, only the outdoor fan is controlled to increase the rotating speed, and the indoor fan does not participate in the control; in another alternative embodiment, only the indoor fan is controlled to reduce the rotating speed, and the outdoor fan does not participate in the control; in another alternative embodiment, the indoor fan is controlled to decrease the rotation speed and the outdoor fan is controlled to increase the rotation speed, and the indoor unit and the outdoor unit can be controlled simultaneously, or sequentially, for example, the indoor fan is controlled to decrease the rotation speed and then the outdoor fan is controlled to increase the rotation speed, or the outdoor fan is controlled to increase the rotation speed and then the indoor fan is controlled to decrease the rotation speed.
The reliability of the air conditioner is judged through the temperature of the outdoor coil, when the temperature of the outdoor coil is larger than a preset first threshold value, the condition that the air conditioner has high pressure and high temperature is indicated, the reliability is poor, and at the moment, the temperature reduction and the pressure reduction are realized through frequency reduction. After the compressor reduces the frequency, whether the air conditioner meets the condition that the temperature of the outdoor coil is greater than a preset first threshold value or not is judged, and the current operating frequency of the compressor is the minimum operating frequency, so that whether the air conditioner reduces the frequency to a limit value or not can not enable the air conditioner to recover to normal and can not continue to reach the limit value through frequency reduction is judged, if yes, the rotating speed of the fan is controlled to further promote temperature reduction and pressure reduction, and the threshold value of the refrigeration operation reliability of the air conditioner is improved.
The effect of reducing pressure which can be achieved by frequency reduction is larger than the action of the fan, the frequency reduction is firstly carried out and then the rotating speed of the fan is controlled, namely, coarse adjustment and fine adjustment are firstly carried out, the adjustment is more timely, the amplitude is larger, the control effect can be quickly obtained, the pressure of the air conditioning system is high, the frequency of the compressor is firstly adjusted, the frequency can be directly acted inside the air conditioning system, the problem is solved from the inside of the air conditioning system, only when the frequency of the compressor is reduced to the lowest, the internal adjustment of the air conditioning system reaches the limit, the adjustment is carried out from the outside, and.
Optionally, the controlling the outdoor fan to increase the rotation speed, and/or controlling the indoor fan to decrease the rotation speed includes:
acquiring the current rotating speed of the outdoor fan, judging whether the current rotating speed of the outdoor fan is less than a preset maximum rotating speed or not, and if so, controlling the outdoor fan to increase the rotating speed;
and/or the presence of a gas in the gas,
and acquiring the current rotating speed of the indoor fan, judging whether the current rotating speed of the indoor fan is greater than a preset minimum rotating speed, and if so, controlling the indoor fan to reduce the rotating speed.
Before adjusting the rotation speed of the outdoor fan/indoor fan, the current rotation speed of the outdoor fan/indoor fan may be first obtained, and whether the outdoor fan/indoor fan is adjusted to the limit value is determined, that is, whether the current rotation speed of the outdoor fan is less than the preset maximum rotation speed or whether the current rotation speed of the indoor fan is greater than the preset minimum rotation speed is determined.
When the current rotating speed of the outdoor fan is less than the maximum rotating speed, the outdoor fan can be further increased, and at the moment, the rotating speed of the outdoor fan can be further increased to realize cooling and pressure reduction, wherein the maximum rotating speed of the outdoor unit and the maximum rotating speed of the air conditioner during normal control can be the same or different, namely the outdoor unit can be specially preset in the air conditioner for the control of the invention. Wherein the preset maximum rotating speed can be selected to be 1000 r/min.
When the current rotating speed of the indoor fan is greater than the preset minimum rotating speed, the rotating speed of the indoor fan can be further reduced to reduce the temperature and the pressure, wherein the minimum rotating speed of the indoor fan can be the same as the minimum rotating speed of the air conditioner during normal control, and the control of the air conditioner can also be specially preset in the air conditioner and can be selected to be 500r/min, so that adverse effects on user experience caused by too low rotating speed of the indoor fan are avoided, and the indoor side evaporator is also prevented from being frozen.
Optionally, as shown in fig. 2, step S50 is followed by:
step S60, judging whether the current outdoor coil temperature is larger than the first threshold value;
the effect produced by the adjustment of the rotating speed of the fan has certain hysteresis, namely the adjustment of the rotating speed of the fan requires a certain time for cooling and pressure reduction, so that the subsequent judgment can be more accurate, after the rotating speed of the fan is adjusted and a certain time is waited for, the current temperature of the outdoor coil pipe is obtained, and the judgment of the step S60 is carried out. If the current outdoor coil temperature is greater than the first threshold, step S70 is executed, and if the current outdoor coil temperature is less than or equal to the first threshold, step S100 is executed, i.e., the operation is continued according to the last action.
Step S70, if the current outdoor coil temperature is greater than the preset first threshold, judging whether the fan of the air conditioner meets a second preset condition, wherein the second preset condition comprises at least one of a first condition and a second condition, the first condition is that the outdoor fan is less than a preset maximum rotating speed, and the second condition is that the indoor fan is greater than a preset minimum rotating speed;
after obtaining current outdoor coil pipe temperature, judge whether the air conditioner satisfies this condition that current outdoor coil pipe temperature is greater than the first threshold value of predetermineeing, if, then continue to judge whether the fan of air conditioner satisfies the second and predetermine the condition, judge whether the air conditioner fan reaches its adjustment limit, perhaps says so, judge whether still can continue to adjust air conditioner fan rotational speed in order to lower the temperature and step down: whether the rotating speed of the outdoor fan can be continuously increased or not can be judged by judging whether the rotating speed of the outdoor fan is less than the preset maximum rotating speed or not, and whether the rotating speed of the indoor fan can be continuously reduced or not can be judged by judging whether the rotating speed of the indoor fan is greater than the preset minimum rotating speed or not.
If the air conditioner does not meet the second preset condition, the fan of the air conditioner reaches the adjustment limit, the adjustment purpose of the air conditioner can not be realized by lowering the fan of the air conditioner any more, the air conditioner can be returned to the normal control before the air conditioner, and the air conditioner can be controlled to stop, so that the safe operation of the air conditioner is realized.
The adjustment of the air conditioner fan comprises three optional embodiments:
one is to control only the outdoor fan to increase the rotation speed, and at this time, the second preset condition includes the first condition, that is, the outdoor fan is less than the preset maximum rotation speed. And obtaining the current rotating speed of the outdoor fan of the air conditioner, judging that the fan of the air conditioner meets a second preset condition when the current outdoor fan is less than the preset maximum rotating speed, and returning to the step of controlling the outdoor fan to increase the rotating speed in the step S50.
And secondly, only controlling the indoor fan to reduce the rotating speed, wherein the second preset condition comprises a second condition that the indoor fan is greater than the preset minimum rotating speed. And obtaining the current rotating speed of the indoor fan of the air conditioner, judging that the fan of the air conditioner meets a second preset condition when the current indoor fan is greater than the preset minimum rotating speed, and returning to the step of controlling the indoor fan to reduce the rotating speed in the step S50.
And thirdly, controlling both the outdoor fan and the indoor fan, wherein the second preset condition comprises a first condition and a second condition, when the air conditioner meets any one of the first condition and the second condition, judging that the fan of the air conditioner meets the second preset condition, and at the moment, returning to the step S50 of controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed. When only the first condition is met, the rotating speed of the outdoor fan is controlled to be increased, the rotating speed of the indoor fan is controlled to be unchanged, and when only the second condition is met, the rotating speed of the indoor fan is controlled to be reduced, and the rotating speed of the outdoor fan is controlled to be unchanged.
The method comprises the steps of obtaining the current outdoor coil temperature after the rotating speed of an outdoor fan of the air conditioner is increased and/or an indoor fan is controlled to reduce the rotating speed, judging the magnitude relation between the current outdoor coil temperature and a first threshold value to determine whether frequency reduction cooling control needs to be continuously carried out, judging whether the fan of the air conditioner meets a second preset condition when the current outdoor coil temperature is still larger than the preset first threshold value, namely judging whether the fan of the air conditioner reaches the control limit of the fan, and continuously reducing the temperature and the pressure by controlling the rotating speed of the fan of the air conditioner, and returning to the step S50 of controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to reduce the rotating speed if the outdoor fan is smaller than the preset maximum rotating speed or the indoor fan is larger than the preset minimum rotating speed.
Optionally, as shown in fig. 2, step S70 is followed by:
step S80, if the fan of the air conditioner does not meet the second preset condition, judging whether the current outdoor coil temperature is larger than a preset second threshold value, wherein the second threshold value is larger than the first threshold value;
and step S90, if yes, controlling the air conditioner to stop.
If not, step S100 is executed, i.e. the operation is continued according to the last action.
In an optional embodiment, when the fan of the air conditioner does not satisfy a second preset condition, determining whether the current outdoor coil temperature is greater than a preset second threshold, where the second threshold is greater than the first threshold, the second threshold may be greater than the first threshold by 5-8 ℃, and the second threshold is a preset dangerous temperature, and if the current outdoor coil temperature is greater than the preset second threshold, it is determined that the air conditioner is in a dangerous extremely high temperature state, at this time, to ensure the safe operation of the air conditioner, the air conditioner needs to be controlled to stop, optionally, an alarm is started while the air conditioner is controlled to stop, where the alarm may be in multiple forms, such as a buzzer alarm, an indicator light flashing alarm, a specific voice alarm, a short message/mail alarm, and the like.
Therefore, the air conditioner operation control method can ensure that the effect is reduced and the operation is ensured when the air conditioning system is not damaged and can be stopped for protection when the air conditioning system is damaged.
Alternatively, as shown in fig. 3, step S50 includes:
step S51, controlling the outdoor fan to increase the rotating speed;
step S52, after the first preset time of the outdoor fan increasing the rotating speed, judging whether the current outdoor coil temperature is larger than the first threshold value;
and step S53, if yes, controlling the indoor fan to reduce the rotating speed.
When the rotating speed of the fan needs to be controlled to reduce the temperature and the pressure, in order to avoid excessive control and improve the control accuracy, the outdoor fan is controlled to increase the rotating speed firstly, after the first preset time of the rotating speed of the outdoor fan is prolonged, the current temperature of the outdoor coil is obtained again, whether the air conditioner recovers to the normal state is judged, namely whether the air conditioner recovers to the state with good reliability is judged, if the current temperature of the outdoor coil is smaller than a first threshold value, the air conditioner recovers to the normal state is explained, the operation of reducing the temperature and the pressure is not needed to be continued, the current control is quitted, the air conditioner returns to the normal control of the air conditioner, if the current temperature of the outdoor coil is larger than the first threshold value, the air conditioner does not recover to the normal state, the operation of reducing the temperature and. By firstly adjusting the rotating speed of the outdoor fan and then adjusting the rotating speed of the indoor fan, the possibility of influencing the user experience can be reduced as much as possible, and the comfortable air conditioning experience of the user is ensured.
Optionally, step S50 includes:
controlling the indoor fan to reduce the rotating speed; after the third preset time length that the rotating speed of the indoor fan is reduced, judging whether the current outdoor coil temperature is greater than the first threshold value or not; and if so, controlling the outdoor fan to increase the rotating speed.
Alternatively, as shown in fig. 4, which is an embodiment of the present invention, as shown in fig. 4, after the outdoor coil temperature is greater than the first threshold value in step S30, the compressor is controlled to perform frequency reduction, a first time period is waited for the outdoor coil temperature change caused by the frequency reduction, after the first time period is waited for, the current operating frequency of the compressor is obtained, step S40 is performed, after the air conditioner meets the first preset condition, it is determined whether the fan meets a second preset condition, that is, the outdoor fan is less than a preset maximum rotation speed, or the indoor fan is greater than a preset minimum rotation speed, if the second preset condition is met, the fan rotation speed is controlled, after the fan rotation speed is controlled, the second time period is waited, step S60 is performed, so that the temperature used in step S60 is the temperature after the fan rotation speed is adjusted, if the second preset condition is not met, the fan rotation speed is unchanged, step S60 is directly performed, and continuing to execute the subsequent steps.
The invention also provides an air conditioner operation control device. Fig. 5 is a schematic diagram of an embodiment of the control device. As shown in fig. 5, the control device includes:
an obtaining unit 101, configured to obtain an outdoor coil temperature;
a judging unit 102, configured to judge whether the outdoor coil temperature is greater than a preset first threshold;
the control unit 103 is used for controlling the compressor to reduce the frequency if the temperature of the outdoor coil pipe is greater than a preset first threshold value;
the determining unit 102 is further configured to obtain a current operating frequency of a compressor, and determine whether the air conditioner meets a first preset condition, where the first preset condition is that a current outdoor coil temperature is greater than the preset first threshold, and the current operating frequency of the compressor is a minimum operating frequency;
the control unit 103 is further configured to control the outdoor fan to increase the rotation speed and/or control the indoor fan to decrease the rotation speed if the air conditioner satisfies a first preset condition.
Optionally, the control unit 103 is further configured to, if the air conditioner does not meet the first preset condition, return to the step of determining whether the outdoor coil temperature is greater than a preset first threshold.
Optionally, the determining unit 102 is further configured to, after controlling the outdoor fan to increase the rotation speed and/or controlling the indoor fan to decrease the rotation speed, perform: judging whether the current outdoor coil temperature is greater than the first threshold value; if so, judging whether a fan of the air conditioner meets a second preset condition, wherein the second preset condition comprises at least one of a first condition and a second condition, the first condition is that the outdoor fan is smaller than a preset maximum rotating speed, and the second condition is that the indoor fan is larger than a preset minimum rotating speed; and if so, returning to the step of controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed.
Optionally, the determining unit 102 is further configured to determine whether the current outdoor coil temperature is greater than a preset second threshold value if the fan of the air conditioner does not meet the second preset condition, where the second threshold value is greater than the first threshold value; the control unit 103 is further configured to control the air conditioner to stop if the current outdoor coil temperature is greater than a preset second threshold.
Optionally, the determining unit 102 is further configured to obtain a current rotation speed of the outdoor fan, determine whether the current rotation speed of the outdoor fan is less than a preset maximum rotation speed, and if so, control the outdoor fan to increase the rotation speed; and/or acquiring the current rotating speed of the indoor fan, judging whether the current rotating speed of the indoor fan is greater than a preset minimum rotating speed, and if so, controlling the indoor fan to reduce the rotating speed.
Optionally, the control unit 103 is further configured to control the outdoor fan to increase the rotation speed; after the outdoor fan increases the first preset time of the rotating speed, judging whether the current outdoor coil temperature is greater than the first threshold value or not; and if so, controlling the indoor fan to reduce the rotating speed.
Optionally, the control unit 103 is further configured to execute the step of obtaining the current operating frequency of the compressor and determining whether the air conditioner meets a first preset condition after the control unit controls the compressor to reduce the frequency and waits for a second preset duration.
The invention also provides an air conditioner. Fig. 6 is a schematic diagram of an embodiment of the air conditioner, and as shown in fig. 6, the air conditioner includes a computer-readable storage medium 201 storing a computer program and a processor 202, and the computer program is read by the processor 202 and executed to implement the air conditioner operation control method according to the above embodiments.
Optionally, the air conditioner includes a detection unit for detecting the temperature of the external coil of the outdoor unit of the air conditioner, the frequency of the compressor, the rotation speed of the outdoor fan, and the rotation speed of the indoor fan.
Optionally, the air conditioner comprises an alarm unit for alarming when the air conditioner is shut down, and the alarm may be in the form of a buzzer.
The present invention also provides a computer-readable storage medium, comprising: the computer-readable storage medium stores a computer program that, when read and executed by a processor, implements the air conditioner operation control method according to the above embodiments.
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.
Claims (10)
1. An operation control method of an air conditioner, comprising:
acquiring the temperature of an outdoor coil pipe;
judging whether the temperature of the outdoor coil pipe is greater than a preset first threshold value or not;
if yes, controlling the compressor to reduce the frequency;
acquiring the current operating frequency of a compressor, and judging whether the air conditioner meets a first preset condition, wherein the first preset condition is that the current outdoor coil temperature is greater than a first threshold value, and the current operating frequency of the compressor is the minimum operating frequency;
if so, controlling the outdoor fan to increase the rotating speed, and/or controlling the indoor fan to decrease the rotating speed.
2. The operation control method of an air conditioner according to claim 1, wherein after controlling the outdoor fan to increase the rotation speed and/or controlling the indoor fan to decrease the rotation speed, further comprising:
judging whether the current outdoor coil temperature is greater than the first threshold value;
if so, judging whether a fan of the air conditioner meets a second preset condition, wherein the second preset condition comprises at least one of a first condition and a second condition, the first condition is that the outdoor fan is smaller than a preset maximum rotating speed, and the second condition is that the indoor fan is larger than a preset minimum rotating speed;
and if so, returning to the step of controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed.
3. The air conditioner operation control method as claimed in claim 2, wherein the judging whether the blower of the air conditioner satisfies a second preset condition comprises:
if the fan of the air conditioner does not meet the second preset condition, judging whether the current outdoor coil temperature is greater than a preset second threshold value, wherein the second threshold value is greater than the first threshold value;
and if so, controlling the air conditioner to stop.
4. The air conditioner operation control method as claimed in any one of claims 1 to 3, wherein after determining whether the air conditioner satisfies a first preset condition, further comprising:
and if the air conditioner does not meet the first preset condition, returning to the step of judging whether the temperature of the outdoor coil is greater than a preset first threshold value.
5. The air conditioner operation control method as claimed in any one of claims 1 to 3, wherein the controlling of the outdoor fan to increase the rotation speed, and/or the controlling of the indoor fan to decrease the rotation speed comprises:
acquiring the current rotating speed of the outdoor fan, judging whether the current rotating speed of the outdoor fan is less than a preset maximum rotating speed or not, and if so, controlling the outdoor fan to increase the rotating speed;
and/or the presence of a gas in the gas,
and acquiring the current rotating speed of the indoor fan, judging whether the current rotating speed of the indoor fan is greater than a preset minimum rotating speed, and if so, controlling the indoor fan to reduce the rotating speed.
6. The air conditioner operation control method as claimed in any one of claims 1 to 3, wherein the controlling of the outdoor fan to increase the rotation speed, and/or the controlling of the indoor fan to decrease the rotation speed comprises:
controlling the outdoor fan to increase the rotating speed;
after the outdoor fan increases the first preset time of the rotating speed, judging whether the current outdoor coil temperature is greater than the first threshold value or not;
and if so, controlling the indoor fan to reduce the rotating speed.
7. The air conditioner operation control method as claimed in any one of claims 1 to 3, wherein the controlling of the compressor after down-conversion further comprises:
and after waiting for a second preset time, executing the steps of acquiring the current operating frequency of the compressor and judging whether the air conditioner meets a first preset condition.
8. An operation control device of an air conditioner, comprising:
an acquisition unit (101) for acquiring an outdoor coil temperature;
the judging unit (102) is used for judging whether the outdoor coil temperature is greater than a preset first threshold value or not;
a control unit (103) for controlling the compressor to reduce the frequency if the outdoor coil temperature is greater than a preset first threshold value;
the judging unit (102) is further configured to obtain a current operating frequency of a compressor, and judge whether the air conditioner meets a first preset condition, where the first preset condition is that a current outdoor coil temperature is greater than a preset first threshold, and the current operating frequency of the compressor is a minimum operating frequency;
the control unit (103) is further used for controlling the outdoor fan to increase the rotating speed and/or controlling the indoor fan to decrease the rotating speed if the air conditioner meets a first preset condition.
9. An air conditioner, characterized by comprising a computer-readable storage medium (201) storing a computer program and a processor (202), the computer program being read and executed by the processor (202) to implement the air conditioner operation control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when read and executed by a processor, implements the air conditioner operation control method according to any one of claims 1 to 7.
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| CN201911309425.XA CN111023499A (en) | 2019-12-18 | 2019-12-18 | Air conditioner operation control method, device, equipment and storage medium |
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Application publication date: 20200417 |