CN108716756B - Operation control method, operation control device, air conditioner and computer readable storage medium - Google Patents
Operation control method, operation control device, air conditioner and computer readable storage medium Download PDFInfo
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- CN108716756B CN108716756B CN201810508815.9A CN201810508815A CN108716756B CN 108716756 B CN108716756 B CN 108716756B CN 201810508815 A CN201810508815 A CN 201810508815A CN 108716756 B CN108716756 B CN 108716756B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention provides an operation control method, an operation control device, an air conditioner and a computer readable storage medium, wherein the operation control method comprises the following steps: detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode; when the heating quantity is determined to be reduced according to the designated operation parameters, judging whether the operation frequency of the compressor is greater than or equal to the preset operation frequency; and adjusting the operation parameters of the designated parts of the air conditioner according to the judgment result of the operation frequency so as to reduce the number of times of defrosting operation in the heating mode, wherein the designated operation parameters comprise at least one of the exhaust temperature of the compressor, the load current of the compressor and the power of the compressor. By the technical scheme, the reliability and stability of the operation of the compressor are improved, the times and duration of defrosting are reduced, and the use experience of a user is effectively improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an operation control method, an operation control device, an air conditioner and a computer readable storage medium.
Background
In the heating mode of the air conditioner, the heating speed is generally required to be high, and therefore the operating frequency of the compressor is set to be high.
In the related art, the compressor operates at a high frequency to cause a system pressure difference to be large, so that the outdoor heat exchanger frosts and defrosts frequently, the indoor heat exchanger outputs inconsistent heating quantity to the indoor environment, and the use experience of a user is seriously influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the present invention to provide an operation control method.
Another object of the present invention is to provide an operation control device.
Another object of the present invention is to provide an air conditioner.
It is another object of the present invention to provide a computer-readable storage medium.
In order to achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided an operation control method including: detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode; when the heating quantity is determined to be reduced according to the designated operation parameters, judging whether the operation frequency of the compressor is greater than or equal to the preset operation frequency; and adjusting the operation parameters of the designated parts of the air conditioner according to the judgment result of the operation frequency so as to reduce the number of times of defrosting operation in the heating mode, wherein the designated operation parameters comprise at least one of the exhaust temperature of the compressor, the load current of the compressor and the power of the compressor.
In the technical scheme, the specified operation parameters of the compressor are detected according to the preset time interval in the heating mode, before the air conditioner needs defrosting, the heating quantity can be determined to be reduced according to the specified operation parameters, whether the possibility of frosting is generated due to overhigh operation frequency is detected in advance, and the operation parameters of the specified parts of the air conditioner are adjusted when the heating quantity is detected to be reduced and the operation frequency is overhigh.
In addition, the method enriches the prediction means of the heating capacity by setting the specified operation parameters to comprise at least one of the exhaust temperature, the load current and the power of the compressor, also improves the reliability of predicting the change trend of the heating capacity, and adjusts the operation parameters of the specified components of the air conditioner by combining the magnitude relation between the operation frequency and the preset operation frequency.
The most possible reason for the reduction of the heating capacity and the overlarge system pressure difference is that the operation frequency is too high, so that when the sudden reduction of the heating capacity is determined, whether the operation frequency exceeds the preset operation frequency or not is judged, if yes, the operation frequency is controlled to be reduced, and if not, the reduction of the frequency cannot relieve the system pressure, so that the reduction of the system pressure difference and the heating capacity can be relieved by adjusting the operation parameters of specified components except the compressor.
In the above technical solution, preferably, before detecting the specified operation parameter of the compressor according to the preset time interval, the method further includes: pre-storing a sequence set and a specified duration of a specified operation parameter, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large; and/or pre-storing a preset reduction change rate corresponding to the designated operating parameter.
In the technical scheme, a reference value for determining heating capacity change is provided by pre-storing a number array set and a specified time length of specified operation parameters, wherein the number array set comprises a plurality of numerical values which are arranged from small to large, and/or pre-storing a preset reduction change rate corresponding to the specified operation parameters, the specified time length corresponds to the time length of change between any two adjacent numerical values in the number array set and is used for analyzing the discrete specified operation parameters, and the preset reduction change rate can be used for detecting continuous specified operation parameters, namely, the slope value of a curve of the specified operation parameters changing along with time.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: determining a corresponding relation between a designated operation parameter and a numerical value in the array set; recording the change duration of the specified operation parameter reduced to the previous value; and when the comparison determines that the change time is less than or equal to the designated time, determining that the heating quantity is reduced, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
In the technical scheme, the change time length of the specified operation parameter reduced to the previous value is recorded, when the change time length is determined to be less than or equal to the specified time length by comparison, the heating capacity is determined to be reduced, whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, namely, when the heating capacity is reduced, whether the operation frequency of the compressor is too high is preferentially determined, the system pressure difference is large, the frosting possibility is reduced by frequency reduction, and the operation stability of the air conditioner and the heat output continuity are favorably improved.
It is worth noting in particular how the duration of the variation is defined, for example, the discharge temperature of the compressor is the nth value of the series of values of duration (t)m，tn) During the continuous operation of the compressor, the time t for detecting the first decrease of the discharge temperature to the n-1 th valuekThen t iskAnd tnThe time interval between the time intervals is the time duration of the change, and the calculated pressure of the air conditioner system can be effectively reduced.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: calculating the change rate of the designated operation parameter according to a preset time interval; when it is determined that the change rate is greater than or equal to the preset reduction change rate, it is determined that the heating amount is decreased, and it is determined whether the operation frequency of the compressor is greater than or equal to the preset operation frequency.
According to the technical scheme, the change rate of the designated operation parameters is calculated according to the preset time interval, the heating capacity is determined to be reduced according to the change rate, and whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, so that the detection real-time performance is high, and the timeliness is high.
In the foregoing technical solution, preferably, adjusting an operation parameter of a designated component of the air conditioner according to a determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode includes: and when the operation frequency is judged to be greater than or equal to the preset operation frequency, reducing the maximum operation frequency of the compressor according to the preset offset so as to reduce the times of defrosting operation in the heating mode, wherein the operation parameters of the specified component comprise the operation frequency of the compressor.
In the technical scheme, when the operation frequency is judged to be greater than or equal to the preset operation frequency, the maximum operation frequency of the compressor is reduced according to the preset offset, and when the heating capacity is insufficient and the operation frequency is high, the operation frequency of the compressor is preferentially reduced so as to reduce the system pressure difference and further reduce the frosting possibility of the outdoor unit, further reduce the times of defrosting operation and effectively improve the continuity of heat output.
In the foregoing technical solution, preferably, the adjusting the operation parameter of the designated component of the air conditioner according to the determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode further includes: and when the operation frequency is judged to be less than the preset operation frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced, wherein the operation parameters of the specified part comprise at least one of the opening and closing degree of the throttle valve, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.
In the technical scheme, when the operation frequency is judged to be less than the preset operation frequency, the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger is controlled to be increased, and/or the rotating speed of the outdoor fan is controlled to be increased, and/or the rotating speed of the indoor fan is controlled to be reduced, namely the heating capacity of the air conditioner is rapidly reduced, but the heating capacity is not caused by overhigh operation frequency of the compressor, the system pressure can be reduced by adjusting the opening and closing degree of the throttle valve, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, the heating capacity is further improved, the frosting possibility of the outdoor unit is reduced, the times of defrosting operation are further reduced, and the continuity of heat output is effectively improved.
According to an embodiment of the second aspect of the present invention, there is provided an operation control device including: the detection unit is used for detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode; a judging unit for judging whether the operating frequency of the compressor is greater than or equal to a preset operating frequency when it is determined that the heating amount is decreased according to the designated operating parameter; and a control unit for adjusting an operation parameter of a designated component of the air conditioner according to the determination result of the operation frequency so as to reduce the number of times of defrosting operation in the heating mode, wherein the designated operation parameter comprises at least one of the discharge temperature of the compressor, the load current of the compressor and the power of the compressor.
In the technical scheme, the specified operation parameters of the compressor are detected according to the preset time interval in the heating mode, before the air conditioner needs defrosting, the heating quantity can be determined to be reduced according to the specified operation parameters, whether the possibility of frosting is generated due to overhigh operation frequency is detected in advance, and the operation parameters of the specified parts of the air conditioner are adjusted when the heating quantity is detected to be reduced and the operation frequency is overhigh.
In addition, the method enriches the prediction means of the heating capacity by setting the specified operation parameters to comprise at least one of the exhaust temperature, the load current and the power of the compressor, also improves the reliability of predicting the change trend of the heating capacity, and adjusts the operation parameters of the specified components of the air conditioner by combining the magnitude relation between the operation frequency and the preset operation frequency.
The most possible reason for the reduction of the heating capacity and the overlarge system pressure difference is that the operation frequency is too high, so that when the sudden reduction of the heating capacity is determined, whether the operation frequency exceeds the preset operation frequency or not is judged, if yes, the operation frequency is controlled to be reduced, and if not, the reduction of the frequency cannot relieve the system pressure, so that the reduction of the system pressure difference and the heating capacity can be relieved by adjusting the operation parameters of specified components except the compressor.
In the above technical solution, preferably, the method further includes: the storage unit is used for prestoring a sequence set and a specified duration of specified operation parameters, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large; and/or for pre-storing a preset reduction rate of change corresponding to the specified operating parameter.
In the technical scheme, a reference value for determining heating capacity change is provided by pre-storing a number array set and a specified time length of specified operation parameters, wherein the number array set comprises a plurality of numerical values which are arranged from small to large, and/or pre-storing a preset reduction change rate corresponding to the specified operation parameters, the specified time length corresponds to the time length of change between any two adjacent numerical values in the number array set and is used for analyzing the discrete specified operation parameters, and the preset reduction change rate can be used for detecting continuous specified operation parameters, namely, the slope value of a curve of the specified operation parameters changing along with time.
In the foregoing technical solution, preferably, the determining unit specifically includes: the first determining subunit is used for determining the corresponding relation between the specified operation parameter and one numerical value in the array set; the recording subunit is used for recording the change duration of the specified operation parameter reduced to the previous value; and the comparison subunit is used for determining that the heating capacity is reduced when the comparison determines that the change time duration is less than or equal to the specified time duration, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
In the technical scheme, the change time length of the specified operation parameter reduced to the previous value is recorded, when the change time length is determined to be less than or equal to the specified time length by comparison, the heating capacity is determined to be reduced, whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, namely, when the heating capacity is reduced, whether the operation frequency of the compressor is too high is preferentially determined, the system pressure difference is large, the frosting possibility is reduced by frequency reduction, and the operation stability of the air conditioner and the heat output continuity are favorably improved.
It is worth noting in particular how the duration of the variation is defined, for example, the discharge temperature of the compressor is the nth value of the series of values of duration (t)m，tn) During the continuous operation of the compressor, the time t for detecting the first decrease of the discharge temperature to the n-1 th valuekThen t iskAnd tnThe time interval between the time intervals is the time duration of the change, and the calculated pressure of the air conditioner system can be effectively reduced.
In the foregoing technical solution, preferably, the determining unit further includes: the calculating subunit is used for calculating the change rate of the specified operation parameter according to a preset time interval; and a second determining subunit for determining that the heating amount decreases and determining whether the operating frequency of the compressor is greater than or equal to the preset operating frequency, when it is determined that the change rate is greater than or equal to the preset reduction change rate.
According to the technical scheme, the change rate of the designated operation parameters is calculated according to the preset time interval, the heating capacity is determined to be reduced according to the change rate, and whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, so that the detection real-time performance is high, and the timeliness is high.
In the above technical solution, preferably, the control unit specifically includes: and the frequency reduction subunit is used for reducing the maximum operation frequency of the compressor according to a preset offset when the operation frequency is judged to be greater than or equal to the preset operation frequency so as to reduce the times of defrosting operation in the heating mode, wherein the operation parameters of the specified component comprise the operation frequency of the compressor.
In the technical scheme, when the operation frequency is judged to be greater than or equal to the preset operation frequency, the maximum operation frequency of the compressor is reduced according to the preset offset, and when the heating capacity is insufficient and the operation frequency is high, the operation frequency of the compressor is preferentially reduced so as to reduce the system pressure difference and further reduce the frosting possibility of the outdoor unit, further reduce the times of defrosting operation and effectively improve the continuity of heat output.
In the above technical solution, preferably, the control unit is further configured to: and when the operation frequency is judged to be less than the preset operation frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced, wherein the operation parameters of the specified part comprise at least one of the opening and closing degree of the throttle valve, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.
In the technical scheme, when the operation frequency is judged to be less than the preset operation frequency, the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger is controlled to be increased, and/or the rotating speed of the outdoor fan is controlled to be increased, and/or the rotating speed of the indoor fan is controlled to be reduced, namely the heating capacity of the air conditioner is rapidly reduced, but the heating capacity is not caused by overhigh operation frequency of the compressor, the system pressure can be reduced by adjusting the opening and closing degree of the throttle valve, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, the heating capacity is further improved, the frosting possibility of the outdoor unit is reduced, the times of defrosting operation are further reduced, and the continuity of heat output is effectively improved.
According to an embodiment of the third aspect of the present invention, there is provided an air conditioner including: an operation control device according to any one of the above aspects.
According to an embodiment of the fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed to implement the operation control method according to any one of the above technical solutions.
In this regard, the advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic flow diagram of an operation control method according to an embodiment of the invention;
FIG. 2 shows a schematic block diagram of an operation control device according to an embodiment of the present invention;
FIG. 3 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 4 is a graph illustrating a variation in exhaust temperature during operation of a prior art air conditioner;
fig. 5 is a graph illustrating a variation in discharge temperature of an air conditioner during operation according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The first embodiment is as follows:
fig. 1 shows a schematic flow diagram of an operation control method according to an embodiment of the invention.
As shown in fig. 1, an operation control method according to an embodiment of the present invention includes: step S102, detecting appointed operation parameters of the compressor according to a preset time interval in the heating mode; step S104, judging whether the operating frequency of the compressor is greater than or equal to a preset operating frequency when the heating quantity is determined to be reduced according to the specified operating parameters; and S106, adjusting the operation parameters of the designated parts of the air conditioner according to the judgment result of the operation frequency so as to reduce the times of defrosting operation in the heating mode, wherein the designated operation parameters comprise at least one of the exhaust temperature of the compressor, the load current of the compressor and the power of the compressor.
In the technical scheme, the specified operation parameters of the compressor are detected according to the preset time interval in the heating mode, before the air conditioner needs defrosting, the heating quantity can be determined to be reduced according to the specified operation parameters, whether the possibility of frosting is generated due to overhigh operation frequency is detected in advance, and the operation parameters of the specified parts of the air conditioner are adjusted when the heating quantity is detected to be reduced and the operation frequency is overhigh.
In addition, the method enriches the prediction means of the heating capacity by setting the specified operation parameters to comprise at least one of the exhaust temperature, the load current and the power of the compressor, also improves the reliability of predicting the change trend of the heating capacity, and adjusts the operation parameters of the specified components of the air conditioner by combining the magnitude relation between the operation frequency and the preset operation frequency.
The most possible reason for the reduction of the heating capacity and the overlarge system pressure difference is that the operation frequency is too high, so that when the sudden reduction of the heating capacity is determined, whether the operation frequency exceeds the preset operation frequency or not is judged, if yes, the operation frequency is controlled to be reduced, and if not, the reduction of the frequency cannot relieve the system pressure, so that the reduction of the system pressure difference and the heating capacity can be relieved by adjusting the operation parameters of specified components except the compressor.
In the above technical solution, preferably, before detecting the specified operation parameter of the compressor according to the preset time interval, the method further includes: pre-storing a sequence set and a specified duration of a specified operation parameter, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large; and/or pre-storing a preset reduction change rate corresponding to the designated operating parameter.
In the technical scheme, a reference value for determining heating capacity change is provided by pre-storing a number array set and a specified time length of specified operation parameters, wherein the number array set comprises a plurality of numerical values which are arranged from small to large, and/or pre-storing a preset reduction change rate corresponding to the specified operation parameters, the specified time length corresponds to the time length of change between any two adjacent numerical values in the number array set and is used for analyzing the discrete specified operation parameters, and the preset reduction change rate can be used for detecting continuous specified operation parameters, namely, the slope value of a curve of the specified operation parameters changing along with time.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: determining a corresponding relation between a designated operation parameter and a numerical value in the array set; recording the change duration of the specified operation parameter reduced to the previous value; and when the comparison determines that the change time is less than or equal to the designated time, determining that the heating quantity is reduced, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
In the technical scheme, the change time length of the specified operation parameter reduced to the previous value is recorded, when the change time length is determined to be less than or equal to the specified time length by comparison, the heating capacity is determined to be reduced, whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, namely, when the heating capacity is reduced, whether the operation frequency of the compressor is too high is preferentially determined, the system pressure difference is large, the frosting possibility is reduced by frequency reduction, and the operation stability of the air conditioner and the heat output continuity are favorably improved.
It is worth noting in particular how the duration of the variation is defined, for example, the discharge temperature of the compressor is the nth value of the series of values of duration (t)m，tn) During the continuous operation of the compressor, the time t for detecting the first decrease of the discharge temperature to the n-1 th valuekThen t iskAnd tnThe time interval between the time intervals is the time duration of the change, and the calculated pressure of the air conditioner system can be effectively reduced.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: calculating the change rate of the designated operation parameter according to a preset time interval; when it is determined that the change rate is greater than or equal to the preset reduction change rate, it is determined that the heating amount is decreased, and it is determined whether the operation frequency of the compressor is greater than or equal to the preset operation frequency.
According to the technical scheme, the change rate of the designated operation parameters is calculated according to the preset time interval, the heating capacity is determined to be reduced according to the change rate, and whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, so that the detection real-time performance is high, and the timeliness is high.
In the foregoing technical solution, preferably, adjusting an operation parameter of a designated component of the air conditioner according to a determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode includes: and when the operation frequency is judged to be greater than or equal to the preset operation frequency, reducing the maximum operation frequency of the compressor according to the preset offset so as to reduce the times of defrosting operation in the heating mode, wherein the operation parameters of the specified component comprise the operation frequency of the compressor.
In the technical scheme, when the operation frequency is judged to be greater than or equal to the preset operation frequency, the maximum operation frequency of the compressor is reduced according to the preset offset, and when the heating capacity is insufficient and the operation frequency is high, the operation frequency of the compressor is preferentially reduced so as to reduce the system pressure difference and further reduce the frosting possibility of the outdoor unit, further reduce the times of defrosting operation and effectively improve the continuity of heat output.
In the foregoing technical solution, preferably, the adjusting the operation parameter of the designated component of the air conditioner according to the determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode further includes: and when the operation frequency is judged to be less than the preset operation frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced, wherein the operation parameters of the specified part comprise at least one of the opening and closing degree of the throttle valve, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.
In the technical scheme, when the operation frequency is judged to be less than the preset operation frequency, the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger is controlled to be increased, and/or the rotating speed of the outdoor fan is controlled to be increased, and/or the rotating speed of the indoor fan is controlled to be reduced, namely the heating capacity of the air conditioner is rapidly reduced, but the heating capacity is not caused by overhigh operation frequency of the compressor, the system pressure can be reduced by adjusting the opening and closing degree of the throttle valve, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, the heating capacity is further improved, the frosting possibility of the outdoor unit is reduced, the times of defrosting operation are further reduced, and the continuity of heat output is effectively improved.
Example two:
fig. 2 shows a schematic block diagram of an operation control device according to an embodiment of the present invention.
As shown in fig. 2, the operation control device 200 according to the embodiment of the present invention includes: the detection unit 202 is used for detecting the designated operation parameters of the compressor according to the preset time interval in the heating mode; a judging unit 204 for judging whether the operating frequency of the compressor is greater than or equal to a preset operating frequency when it is determined that the heating amount is decreased according to the designated operating parameter; and a control unit 206 for adjusting an operation parameter of a designated component of the air conditioner according to the determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode, wherein the designated operation parameter includes at least one of a discharge temperature of the compressor, a load current of the compressor, and a power of the compressor.
In the technical scheme, the specified operation parameters of the compressor are detected according to the preset time interval in the heating mode, before the air conditioner needs defrosting, the heating quantity can be determined to be reduced according to the specified operation parameters, whether the possibility of frosting is generated due to overhigh operation frequency is detected in advance, and the operation parameters of the specified parts of the air conditioner are adjusted when the heating quantity is detected to be reduced and the operation frequency is overhigh.
In addition, the method enriches the prediction means of the heating capacity by setting the specified operation parameters to comprise at least one of the exhaust temperature, the load current and the power of the compressor, also improves the reliability of predicting the change trend of the heating capacity, and adjusts the operation parameters of the specified components of the air conditioner by combining the magnitude relation between the operation frequency and the preset operation frequency.
The most possible reason for the reduction of the heating capacity and the overlarge system pressure difference is that the operation frequency is too high, so that when the sudden reduction of the heating capacity is determined, whether the operation frequency exceeds the preset operation frequency or not is judged, if yes, the operation frequency is controlled to be reduced, and if not, the reduction of the frequency cannot relieve the system pressure, so that the reduction of the system pressure difference and the heating capacity can be relieved by adjusting the operation parameters of specified components except the compressor.
In the above technical solution, preferably, the method further includes: the storage unit 208 is used for prestoring a sequence set and a specified duration of a specified operation parameter, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large; and/or for pre-storing a preset reduction rate of change corresponding to the specified operating parameter.
In the technical scheme, a reference value for determining heating capacity change is provided by pre-storing a number array set and a specified time length of specified operation parameters, wherein the number array set comprises a plurality of numerical values which are arranged from small to large, and/or pre-storing a preset reduction change rate corresponding to the specified operation parameters, the specified time length corresponds to the time length of change between any two adjacent numerical values in the number array set and is used for analyzing the discrete specified operation parameters, and the preset reduction change rate can be used for detecting continuous specified operation parameters, namely, the slope value of a curve of the specified operation parameters changing along with time.
In the foregoing technical solution, preferably, the determining unit 204 specifically includes: a first determining subunit 2042, configured to determine a corresponding relationship between the specified operating parameter and one of the numerical values in the sequence set; a recording subunit 2044, configured to record a change duration of the specified operation parameter reduced to a previous value; and a comparing subunit 2046, configured to determine that the heating capacity decreases when the comparison determines that the change time period is less than or equal to the specified time period, and determine whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
In the technical scheme, the change time length of the specified operation parameter reduced to the previous value is recorded, when the change time length is determined to be less than or equal to the specified time length by comparison, the heating capacity is determined to be reduced, whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, namely, when the heating capacity is reduced, whether the operation frequency of the compressor is too high is preferentially determined, the system pressure difference is large, the frosting possibility is reduced by frequency reduction, and the operation stability of the air conditioner and the heat output continuity are favorably improved.
It is worth noting in particular how the duration of the variation is defined, for example, the discharge temperature of the compressor is the nth value of the series of values of duration (t)m，tn) During the continuous operation of the compressor, the time t for detecting the first decrease of the discharge temperature to the n-1 th valuekThen t iskAnd tnThe time interval between the time intervals is the time duration of the change, and the calculated pressure of the air conditioner system can be effectively reduced.
In the foregoing technical solution, preferably, the determining unit 204 further includes: a calculating subunit 2048, configured to calculate a change rate of the specified operating parameter according to a preset time interval; and a second determining subunit 20410, configured to determine that the heating amount decreases when it is determined that the change rate is greater than or equal to the preset reduction change rate, and determine whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
According to the technical scheme, the change rate of the designated operation parameters is calculated according to the preset time interval, the heating capacity is determined to be reduced according to the change rate, and whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, so that the detection real-time performance is high, and the timeliness is high.
In the above technical solution, preferably, the control unit 206 further includes: a frequency reducing subunit 2062, configured to reduce the maximum operating frequency of the compressor according to a preset offset when it is determined that the operating frequency is greater than or equal to the preset operating frequency, so as to reduce the number of times of defrosting operations in the heating mode, where the operating parameter of the designated component includes the operating frequency of the compressor.
In the technical scheme, when the operation frequency is judged to be greater than or equal to the preset operation frequency, the maximum operation frequency of the compressor is reduced according to the preset offset, and when the heating capacity is insufficient and the operation frequency is high, the operation frequency of the compressor is preferentially reduced so as to reduce the system pressure difference and further reduce the frosting possibility of the outdoor unit, further reduce the times of defrosting operation and effectively improve the continuity of heat output.
In the above technical solution, preferably, the control unit 206 is further configured to: and when the operation frequency is judged to be less than the preset operation frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced, wherein the operation parameters of the specified part comprise at least one of the opening and closing degree of the throttle valve, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.
In the technical scheme, when the operation frequency is judged to be less than the preset operation frequency, the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger is controlled to be increased, and/or the rotating speed of the outdoor fan is controlled to be increased, and/or the rotating speed of the indoor fan is controlled to be reduced, namely the heating capacity of the air conditioner is rapidly reduced, but the heating capacity is not caused by overhigh operation frequency of the compressor, the system pressure can be reduced by adjusting the opening and closing degree of the throttle valve, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, the heating capacity is further improved, the frosting possibility of the outdoor unit is reduced, the times of defrosting operation are further reduced, and the continuity of heat output is effectively improved.
Example three:
fig. 3 shows a schematic block diagram of an air conditioner according to an embodiment of the present invention.
As shown in fig. 3, an air conditioner 300 according to an embodiment of the present invention includes: the operation control device 200 according to any one of the above embodiments.
It is to be noted that the operation control device 200 may be a logic operation device such as a CPU, an MCU, a single chip, an embedded device, etc., the detection unit 202 may be a temperature sensor and a mercury thermometer, the determination unit 204 may include a comparator, an adder, a subtractor, a multiplier, a divider, an integrator, and a differentiator, the control unit 206 may be a power driving circuit of a compressor, a driving circuit of an indoor fan, a driving circuit of an electromagnetic valve, and a driving circuit of an outdoor unit, and the storage unit 208 may be a memory.
Fig. 4 is a graph illustrating a change in exhaust temperature during operation of a related art air conditioner.
As shown in fig. 4, according to the size relationship between the discharge temperature T of the compressor and the preset discharge temperature Ts, in the prior art, at the time point T1 to the time point T2, at the time point T3 to the time point T4, and at the time point T5 to the time point T6, that is, the indoor unit operates in the cooling mode, and the outdoor unit operates in the heating mode, the heating experience of the user is seriously affected at this time.
Fig. 5 is a graph illustrating a variation in discharge temperature of an air conditioner during operation according to an embodiment of the present invention.
As shown in fig. 5, according to the exhaust temperature time-varying curve of the air conditioner according to the embodiment of the present invention, the defrosting times and the accumulated defrosting time periods are less than those shown in fig. 4 from the time t7 to the time t8 and from the time t9 to the time t10, and the heat output is more continuous.
Example four:
a computer-readable storage medium according to an embodiment of the present invention is provided, on which a computer program is stored, the computer program realizing, when executed: detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode; when the heating quantity is determined to be reduced according to the designated operation parameters, judging whether the operation frequency of the compressor is greater than or equal to the preset operation frequency; and adjusting the operation parameters of the designated parts of the air conditioner according to the judgment result of the operation frequency so as to reduce the number of times of defrosting operation in the heating mode, wherein the designated operation parameters comprise at least one of the exhaust temperature of the compressor, the load current of the compressor and the power of the compressor.
In the technical scheme, the specified operation parameters of the compressor are detected according to the preset time interval in the heating mode, before the air conditioner needs defrosting, the heating quantity can be determined to be reduced according to the specified operation parameters, whether the possibility of frosting is generated due to overhigh operation frequency is detected in advance, and the operation parameters of the specified parts of the air conditioner are adjusted when the heating quantity is detected to be reduced and the operation frequency is overhigh.
In addition, the method enriches the prediction means of the heating capacity by setting the specified operation parameters to comprise at least one of the exhaust temperature, the load current and the power of the compressor, also improves the reliability of predicting the change trend of the heating capacity, and adjusts the operation parameters of the specified components of the air conditioner by combining the magnitude relation between the operation frequency and the preset operation frequency.
The most possible reason for the reduction of the heating capacity and the overlarge system pressure difference is that the operation frequency is too high, so that when the sudden reduction of the heating capacity is determined, whether the operation frequency exceeds the preset operation frequency or not is judged, if yes, the operation frequency is controlled to be reduced, and if not, the reduction of the frequency cannot relieve the system pressure, so that the reduction of the system pressure difference and the heating capacity can be relieved by adjusting the operation parameters of specified components except the compressor.
In the above technical solution, preferably, before detecting the specified operation parameter of the compressor according to the preset time interval, the method further includes: pre-storing a sequence set and a specified duration of a specified operation parameter, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large; and/or pre-storing a preset reduction change rate corresponding to the designated operating parameter.
In the technical scheme, a reference value for determining heating capacity change is provided by pre-storing a number array set and a specified time length of specified operation parameters, wherein the number array set comprises a plurality of numerical values which are arranged from small to large, and/or pre-storing a preset reduction change rate corresponding to the specified operation parameters, the specified time length corresponds to the time length of change between any two adjacent numerical values in the number array set and is used for analyzing the discrete specified operation parameters, and the preset reduction change rate can be used for detecting continuous specified operation parameters, namely, the slope value of a curve of the specified operation parameters changing along with time.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: determining a corresponding relation between a designated operation parameter and a numerical value in the array set; recording the change duration of the specified operation parameter reduced to the previous value; and when the comparison determines that the change time is less than or equal to the designated time, determining that the heating quantity is reduced, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
In the technical scheme, the change time length of the specified operation parameter reduced to the previous value is recorded, when the change time length is determined to be less than or equal to the specified time length by comparison, the heating capacity is determined to be reduced, whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, namely, when the heating capacity is reduced, whether the operation frequency of the compressor is too high is preferentially determined, the system pressure difference is large, the frosting possibility is reduced by frequency reduction, and the operation stability of the air conditioner and the heat output continuity are favorably improved.
It is worth noting in particular how the duration of the variation is defined, for example, the discharge temperature of the compressor is the nth value of the series of values of duration (t)m，tn) During the continuous operation of the compressor, the time t for detecting the first decrease of the discharge temperature to the n-1 th valuekThen t iskAnd tnThe time interval between the time intervals is the time duration of the change, and the calculated pressure of the air conditioner system can be effectively reduced.
In the foregoing technical solution, preferably, when it is determined that the heating capacity decreases according to the specified operation parameter, determining whether the operation frequency of the compressor is greater than or equal to a preset operation frequency includes: calculating the change rate of the designated operation parameter according to a preset time interval; when it is determined that the change rate is greater than or equal to the preset reduction change rate, it is determined that the heating amount is decreased, and it is determined whether the operation frequency of the compressor is greater than or equal to the preset operation frequency.
According to the technical scheme, the change rate of the designated operation parameters is calculated according to the preset time interval, the heating capacity is determined to be reduced according to the change rate, and whether the operation frequency of the compressor is greater than or equal to the preset operation frequency is continuously judged, so that the detection real-time performance is high, and the timeliness is high.
In the foregoing technical solution, preferably, adjusting an operation parameter of a designated component of the air conditioner according to a determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode includes: and when the operation frequency is judged to be greater than or equal to the preset operation frequency, reducing the maximum operation frequency of the compressor according to the preset offset so as to reduce the times of defrosting operation in the heating mode, wherein the operation parameters of the specified component comprise the operation frequency of the compressor.
In the technical scheme, when the operation frequency is judged to be greater than or equal to the preset operation frequency, the maximum operation frequency of the compressor is reduced according to the preset offset, and when the heating capacity is insufficient and the operation frequency is high, the operation frequency of the compressor is preferentially reduced so as to reduce the system pressure difference and further reduce the frosting possibility of the outdoor unit, further reduce the times of defrosting operation and effectively improve the continuity of heat output.
In the foregoing technical solution, preferably, the adjusting the operation parameter of the designated component of the air conditioner according to the determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode further includes: and when the operation frequency is judged to be less than the preset operation frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced, wherein the operation parameters of the specified part comprise at least one of the opening and closing degree of the throttle valve, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.
In the technical scheme, when the operation frequency is judged to be less than the preset operation frequency, the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger is controlled to be increased, and/or the rotating speed of the outdoor fan is controlled to be increased, and/or the rotating speed of the indoor fan is controlled to be reduced, namely the heating capacity of the air conditioner is rapidly reduced, but the heating capacity is not caused by overhigh operation frequency of the compressor, the system pressure can be reduced by adjusting the opening and closing degree of the throttle valve, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, the heating capacity is further improved, the frosting possibility of the outdoor unit is reduced, the times of defrosting operation are further reduced, and the continuity of heat output is effectively improved.
The technical scheme of the invention is described in detail above with reference to the accompanying drawings, and in consideration of how to reduce the defrosting time and times of the air conditioner proposed by the related art, the invention provides an operation control method, an operation control device, the air conditioner and a computer readable storage medium.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. An operation control method characterized by comprising:
detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode;
when the heating quantity is determined to be reduced according to the designated operation parameters, judging whether the operation frequency of the compressor is greater than or equal to a preset operation frequency;
adjusting the operation parameters of the designated components of the air conditioner according to the judgment result of the operation frequency so as to reduce the times of defrosting operation in the heating mode,
wherein the specified operating parameter comprises at least one of a discharge temperature of the compressor, a load current of the compressor, and a power of the compressor;
before detecting the designated operating parameters of the compressor according to the preset time interval, the method further comprises the following steps:
pre-storing a sequence set and a specified duration of the specified operation parameters, wherein the sequence set comprises a plurality of numerical values which are arranged from small to large;
and/or prestoring a preset reduction change rate corresponding to the specified operation parameter;
the operation parameter of the designated part includes at least one of an operation frequency of the compressor, an opening degree of a throttle valve, a rotation speed of an outdoor fan and a rotation speed of an indoor fan.
2. The operation control method according to claim 1, wherein the determining whether the operating frequency of the compressor is greater than or equal to a preset operating frequency when it is determined that the heating amount is decreased according to the specified operating parameter specifically includes:
determining a corresponding relation between the specified operation parameter and one numerical value in the array set;
recording the change duration of the specified operation parameter reduced to the previous value;
and when the comparison result shows that the change time length is less than or equal to the designated time length, determining that the heating capacity is reduced, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
3. The operation control method according to claim 1, wherein the determining whether the operating frequency of the compressor is greater than or equal to a preset operating frequency when it is determined that the heating amount is decreased according to the specified operating parameter specifically includes:
calculating the change rate of the specified operation parameter according to the preset time interval;
and when the change rate is judged to be greater than or equal to the preset reduction change rate, determining that the heating capacity is reduced, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
4. The operation control method according to any one of claims 1 to 3, wherein the adjusting an operation parameter of a designated component of an air conditioner according to the determination result of the operation frequency to reduce the number of times of defrosting operations in the heating mode specifically comprises:
and when the operation frequency is judged to be greater than or equal to the preset operation frequency, reducing the maximum operation frequency of the compressor according to a preset offset so as to reduce the times of defrosting operation in the heating mode.
5. The operation control method according to any one of claims 1 to 3, wherein the adjusting of the operation parameters of the designated components of the air conditioner according to the determination result of the operation frequency reduces the number of times of defrosting operations in the heating mode, further comprises:
and when the operating frequency is judged to be less than the preset operating frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced.
6. An operation control device characterized by comprising:
the detection unit is used for detecting the appointed operation parameters of the compressor according to the preset time interval in the heating mode;
the judging unit is used for judging whether the operating frequency of the compressor is greater than or equal to a preset operating frequency or not when the heating capacity is determined to be reduced according to the specified operating parameters;
a control unit for adjusting the operation parameters of the designated components of the air conditioner according to the judgment result of the operation frequency so as to reduce the times of defrosting operation in the heating mode,
wherein the specified operating parameter comprises at least one of a discharge temperature of the compressor, a load current of the compressor, and a power of the compressor;
the storage unit is used for prestoring a number array set and a specified duration of the specified operation parameters, and the number array set comprises a plurality of numerical values which are arranged from small to large;
and/or the preset reduction change rate corresponding to the specified operation parameter is prestored;
the operation parameter of the designated part includes at least one of an operation frequency of the compressor, an opening degree of a throttle valve, a rotation speed of an outdoor fan and a rotation speed of an indoor fan.
7. The operation control device according to claim 6, wherein the determination unit specifically includes:
the first determining subunit is used for determining the corresponding relation between the specified operating parameter and one numerical value in the array set;
the recording subunit is used for recording the change duration of the specified operation parameter reduced to the previous value;
and the comparison subunit is used for determining that the heating capacity is reduced when the comparison determines that the change time length is less than or equal to the specified time length, and judging whether the operating frequency of the compressor is greater than or equal to the preset operating frequency.
8. The operation control device according to claim 6, wherein the determination unit further includes:
the calculating subunit is used for calculating the change rate of the specified operation parameter according to the preset time interval;
a second determining subunit, configured to determine that the heating amount decreases and determine whether the operating frequency of the compressor is greater than or equal to the preset operating frequency, when it is determined that the change rate is greater than or equal to the preset reduction change rate.
9. The operation control device according to any one of claims 6 to 8, characterized in that the control unit specifically includes:
and the frequency reduction subunit is used for reducing the maximum operation frequency of the compressor according to a preset offset when the operation frequency is judged to be greater than or equal to the preset operation frequency so as to reduce the times of defrosting operation in the heating mode.
10. The operation control device according to any one of claims 6 to 8,
the control unit is further configured to: and when the operating frequency is judged to be less than the preset operating frequency, controlling the opening and closing degree of a throttle valve arranged in a refrigerant channel between the indoor heat exchanger and the outdoor heat exchanger to be increased, and/or controlling the rotating speed of the outdoor fan to be increased, and/or controlling the rotating speed of the indoor fan to be reduced.
11. An air conditioner, comprising:
the operation control device according to any one of claims 6 to 10.
12. A computer-readable storage medium on which a computer program is stored, characterized in that the computer program, when executed, implements the operation control method according to any one of the preceding claims 1 to 5.
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| CN109506328B (en) * | 2019-01-22 | 2021-03-19 | 广东美的制冷设备有限公司 | Control method of air conditioner electronic expansion valve and air conditioner |
| CN110631210B (en) * | 2019-09-30 | 2021-07-16 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
| CN110686366B (en) * | 2019-10-16 | 2021-02-09 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
| CN110887200B (en) * | 2019-11-08 | 2021-03-09 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN111023460B (en) * | 2019-12-31 | 2021-07-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN111189268B (en) * | 2020-01-14 | 2021-07-06 | 广东芬尼能源技术有限公司 | Defrosting control method for variable frequency heat pump |
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