CN112984703B - Air conditioning unit starting control method, device and equipment and storage medium - Google Patents
Air conditioning unit starting control method, device and equipment and storage medium Download PDFInfo
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- CN112984703B CN112984703B CN202110329832.8A CN202110329832A CN112984703B CN 112984703 B CN112984703 B CN 112984703B CN 202110329832 A CN202110329832 A CN 202110329832A CN 112984703 B CN112984703 B CN 112984703B
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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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 relates to the technical field of air conditioner control, and discloses a method, a device, equipment and a storage medium for controlling the starting of an air conditioning unit, wherein the method comprises the following steps: when a starting heating instruction is received, the evaporator pressure value of an evaporator of an indoor fan and the system exhaust pressure value of an air conditioning unit are obtained, the operation mode of the indoor fan is determined according to the evaporator pressure value, the indoor fan is controlled to operate in the indoor fan operation mode, the exhaust pressure change rate corresponding to the air conditioning unit is obtained, the operation mode of an outdoor fan is determined according to the system exhaust pressure value and the exhaust pressure change rate, and the outdoor fan is controlled to operate in the outdoor fan operation mode. When a starting-up heating instruction is received, the operation of the indoor fan is controlled according to the obtained pressure value of the evaporator, and the operation of the outdoor fan is controlled according to the obtained exhaust pressure value and the exhaust pressure change rate of the system, so that the control precision and the operation reliability of the air conditioning unit in a starting-up heating stage are improved, and the blowing experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a method, a device, equipment and a storage medium for controlling the starting of an air conditioning unit.
Background
In the prior art, when a (fixed frequency unit type) air-cooling cold air heat pump type air conditioning unit enters a heating operation stage of starting up, in order to prevent influence on blowing experience of a user due to low outlet air temperature in the starting up process, a cold air prevention function is usually set, for example, when the running time of a compressor is longer than the preset running time or the indoor unit pipe temperature is higher than the preset pipe temperature, an indoor fan is started to prevent cold air from being blown out when the air conditioning unit is started up, however, in the specific implementation, when the indoor fan is not started up by adopting the control mode, heat exchange of the indoor fan is easily blocked, heat cannot be dissipated from the indoor side in time, the exhaust pressure of a system rapidly rises to a high-voltage protection value to generate high-voltage protection, the air conditioning unit is further stopped, and the heating operation reliability of the air conditioning unit is influenced; especially, in a high-temperature environment, even if the indoor fan is started, the exhaust pressure of the system cannot be timely prevented from rising, high-pressure protection still occurs to the air conditioning system, the air conditioning unit is further stopped, and the heating operation reliability of the air conditioning unit is influenced.
The prior art also provides a solution, which controls the outdoor fan to be started or stopped according to the external environment temperature of the air conditioning unit, and controls the operation of the indoor fan by combining the indoor fan pipe temperature and the starting operation time of the air conditioning unit to suppress the rapid rise of the system exhaust pressure of the air conditioning unit, but the control precision for controlling the starting and stopping of the outdoor fan by only the outdoor environment temperature is obviously insufficient, and the phenomenon of mistakenly closing the outdoor fan is easy to occur (for example, the system exhaust pressure of the air conditioning unit does not reach a high-pressure protection value and the outdoor fan is closed in advance under a high-temperature environment), so that the heat exchange effect of the outdoor side is influenced, unnecessary economic loss is caused (for example, a compressor is damaged due to liquid return by air suction), and an error caused by the hysteresis of a temperature sensing bag for detecting the indoor fan pipe temperature cannot be avoided. Therefore, how to improve the control accuracy and the operation reliability of the air conditioning unit in the startup heating stage so as to further improve the blowing experience of the user becomes a problem to be solved urgently.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for controlling the starting-up of an air conditioning unit, and aims to solve the technical problem of how to improve the control precision and the operation reliability of the air conditioning unit in the starting-up heating stage so as to further improve the blowing experience of a user.
In order to achieve the above object, the present invention provides a method for controlling the start-up of an air conditioning unit, the method comprising the steps of:
when a starting heating instruction is received, acquiring an evaporator pressure value of the indoor fan evaporator and a system exhaust pressure value of the air conditioning unit;
determining an indoor fan operation mode according to the evaporator pressure value, and controlling the indoor fan to operate in the indoor fan operation mode;
acquiring the exhaust pressure change rate corresponding to the air conditioning unit;
and determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode.
Optionally, the step of determining an indoor fan operation mode according to the evaporator pressure value and controlling the indoor fan to operate in the indoor fan operation mode specifically includes:
when the pressure value of the evaporator is smaller than the pressure value of the first evaporator, controlling the indoor fan not to start to operate;
when the pressure value of the evaporator is greater than or equal to the pressure value of the first evaporator and smaller than the pressure value of the second evaporator, controlling the indoor fan to operate at a low wind gear;
And when the pressure value of the evaporator is greater than or equal to the pressure value of the second evaporator, controlling the indoor fan to operate at a preset air speed.
Optionally, the step of obtaining an exhaust pressure change rate corresponding to the air conditioning unit specifically includes:
when the compressor is started, acquiring a first system exhaust pressure value corresponding to the starting time and a second system exhaust pressure value corresponding to the ending time of each unit time within a preset time period for starting the compressor in real time;
calculating a pressure difference value according to the first system exhaust pressure value and the second system exhaust pressure value;
and calculating the exhaust pressure change rate corresponding to the air conditioning unit according to the interval duration corresponding to the unit time interval and the pressure difference value.
Optionally, the step of determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode specifically includes:
when the system exhaust pressure value is smaller than a preset exhaust pressure value, determining a corresponding first outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the first outdoor fan operation mode;
And when the system exhaust pressure value is greater than or equal to the preset exhaust pressure value, determining a corresponding second outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode.
Optionally, the step of determining a corresponding first outdoor fan operation mode according to the discharge pressure change rate, and controlling the outdoor fan to operate in the first outdoor fan operation mode specifically includes:
when the exhaust pressure change rate is less than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to operate;
when the discharge pressure change rate is greater than the first preset discharge pressure change rate and less than a second preset discharge pressure change rate, controlling the outdoor fan to maintain the current running state;
and when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the outdoor fan to stop.
Optionally, the step of determining a corresponding second outdoor fan operation mode according to the discharge pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode specifically includes:
When the exhaust pressure change rate is less than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to stop;
when the discharge pressure change rate is greater than the first preset discharge pressure change rate and less than a second preset discharge pressure change rate, controlling the outdoor fan to stop, and controlling the indoor fan to operate at a high gear;
and when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the compressor to stop running and controlling the outdoor fan to be closed in a delayed manner.
Optionally, after the step of determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode, the method further includes:
acquiring the running time of the compressor;
when the running time is greater than or equal to the preset running time, detecting whether the starting heating instruction is received or not;
or the like, or, alternatively,
and when the compressor is restarted, detecting whether the starting heating instruction is received or not.
In addition, in order to achieve the above object, the present invention further provides an air conditioning unit startup control device, where the air conditioning unit includes an indoor fan, an indoor fan evaporator, and an outdoor fan, the air conditioning unit startup control device includes:
The pressure acquisition module is used for acquiring an evaporator pressure value of the indoor fan evaporator and a system exhaust pressure value of the air conditioning unit when a starting heating instruction is received;
the indoor unit control module is used for determining an indoor fan operation mode according to the evaporator pressure value and controlling the indoor fan to operate in the indoor fan operation mode;
the pressure change rate calculation module is used for acquiring the exhaust pressure change rate corresponding to the air conditioning unit;
and the outdoor unit control module is used for determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate and controlling the outdoor fan to operate in the outdoor fan operation mode.
Further, to achieve the above object, the present invention also provides an air conditioning unit startup control apparatus, comprising: the control method comprises the steps of storing a memory, a processor and an air conditioning unit starting control program which is stored on the memory and can run on the processor, wherein the air conditioning unit starting control program is configured to realize the steps of the air conditioning unit starting control method.
In addition, in order to achieve the above object, the present invention further provides a storage medium, in which an air conditioning unit startup control program is stored, and the air conditioning unit startup control program implements the steps of the air conditioning unit startup control method as described above when executed by a processor.
In the invention, when a starting-up heating instruction is received, the evaporator pressure value of an indoor fan evaporator and the system exhaust pressure value of the air conditioning unit are obtained, the indoor fan operation mode is determined according to the evaporator pressure value, the indoor fan is controlled to operate in the indoor fan operation mode, the exhaust pressure change rate corresponding to the air conditioning unit is obtained, the outdoor fan operation mode is determined according to the system exhaust pressure value and the exhaust pressure change rate, and the outdoor fan is controlled to operate in the outdoor fan operation mode. Compared with the prior art that the starting and stopping of the outdoor fan are controlled according to the external environment temperature of the air conditioning unit acquired by the temperature sensing bag, and the starting and stopping of the indoor fan are controlled according to the pipe temperature of the indoor fan acquired by the temperature sensing bag, which cannot be avoided, errors caused by temperature hysteresis of the temperature sensing bag during detection and influences on the control precision of the air conditioning unit, the method determines the operation mode of the indoor fan according to the acquired evaporator pressure value of the evaporator of the indoor fan when a starting heating instruction is received, controls the indoor fan to operate in the operation mode of the indoor fan to improve the control precision of the indoor fan in the starting heating stage, determines the operation mode of the outdoor fan according to the acquired system exhaust pressure value and exhaust pressure change rate of the air conditioning unit, and controls the outdoor fan to operate in the operation mode of the outdoor fan, the control precision of the outdoor fan in the starting and heating stage is improved, so that the control precision of the air conditioning unit in the starting and heating stage is improved, the judgment precision of the stopping phenomenon of the air conditioning unit caused by high-voltage protection is also improved, and the operation reliability and the blowing experience of a user are further improved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning unit startup control device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a startup control method for an air conditioning unit according to the present invention;
fig. 3 is a cold-heat flow diagram related to the air conditioning unit startup control method of the present invention;
FIG. 4 is a flowchart illustrating a second embodiment of a method for controlling the start-up of an air conditioning unit according to the present invention;
fig. 5 is a block diagram showing the configuration of the air conditioning unit start-up control apparatus according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioning unit startup control device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioning unit startup control apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the aircrew start-up control device, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include an operating system, a data storage module, a network communication module, a user interface module, and an air conditioning unit startup control program.
In the air conditioning unit startup control apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the air conditioning unit startup control device of the present invention may be arranged in the air conditioning unit startup control device, and the air conditioning unit startup control device calls the air conditioning unit startup control program stored in the memory 1005 through the processor 1001 and executes the air conditioning unit startup control method provided by the embodiment of the present invention.
An embodiment of the present invention provides a method for controlling a start-up of an air conditioning unit, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for controlling the start-up of the air conditioning unit according to the present invention.
In this embodiment, the air conditioning unit startup control method includes the following steps:
step S10: when a starting heating instruction is received, acquiring an evaporator pressure value of an indoor fan evaporator and a system exhaust pressure value of the air conditioning unit;
it should be noted that, in this embodiment, when a power-on heating instruction is received, the air conditioning unit including, but not limited to, an indoor fan evaporator, and an outdoor fan may be controlled to enter a heating operation stage, referring to fig. 3, fig. 3 is a cold-heat flow diagram related to the power-on control method of the air conditioning unit of the present invention, in fig. 3, 1 is a compressor for lifting low-pressure gas into high-pressure gas, which is a heart of a refrigeration system, and is configured to suck low-temperature and low-pressure refrigerant gas from an air suction pipe, drive a piston to compress the refrigerant gas through operation of a motor, and then discharge the high-temperature and high-pressure refrigerant gas to an exhaust pipe to provide power for a refrigeration cycle, so as to implement a refrigeration cycle of compression → condensation (heat release) → expansion → evaporation (heat absorption), and 2 is a four-way valve having E, D, C, S oil ports as a control valve, which can implement a refrigeration cycle and a heat cycle based on four oil ports, 3 is the finned tube condenser, 4 is outdoor fan, 5 is throttling mechanism, 6 is the finned tube evaporimeter, 7 is indoor fan, 8 is vapour and liquid separator, 9 is the exhaust temperature sensing package, 10 is the exhaust pressure sensor, be used for detecting the exhaust pressure value of the blast pipe that links to each other with compressor 1, system exhaust pressure value promptly, 11 is outer coil pipe temperature sensing package, 12 is outdoor environment temperature sensing package, 13a and 13b are the filter, 14 is the evaporimeter pressure sensor, be used for detecting the pressure value of the finned tube evaporimeter 6 that corresponds with indoor fan 7, the evaporimeter pressure value of indoor fan evaporimeter promptly, 15 is indoor environment temperature sensing package, therefore, can acquire based on evaporimeter pressure sensor 14 the evaporimeter pressure value of indoor fan evaporimeter, acquire based on exhaust pressure sensor 10 the system exhaust pressure value of air conditioning unit.
Step S20: determining an indoor fan operation mode according to the evaporator pressure value, and controlling the indoor fan to operate in the indoor fan operation mode;
it is easy to understand that, when the evaporator pressure value is obtained, an indoor fan operation mode may be determined according to the magnitude of the evaporator pressure value, and the indoor fan may be controlled to operate in the indoor fan operation mode, where the indoor fan operation mode includes, but is not limited to, controlling the indoor fan to operate without starting, controlling the indoor fan to operate at a low wind gear, and controlling the indoor fan to operate at a preset wind speed.
In a specific implementation, in order to improve the control accuracy of an indoor fan, when the pressure value of the evaporator is detected to be smaller than the first evaporator pressure value, the indoor fan is controlled not to start to operate; when the pressure value of the evaporator is greater than or equal to the pressure value of the first evaporator and less than the pressure value of the second evaporator, controlling the indoor fan to operate at a low wind gear, wherein the low wind gear can be understood as an adjusting gear of the indoor fan divided according to a preset gear division rule, such as a high wind gear and a low wind gear, and the preset gear division rule can be set according to actual requirements; when the pressure value of the evaporator is detected to be greater than or equal to the pressure value of the second evaporator, the indoor fan is controlled to operate at a preset air speed, the preset air speed can be set according to actual requirements, and the embodiment is not limited to this. When R410A refrigerant is selected, the first evaporator pressure value can be set to 1700kPa (gauge pressure), the second evaporator pressure value can be set to 2300kPa (gauge pressure), when the evaporator pressure value is increased from 1500kPa to 2500kPa, the indoor fan operates at a low wind gear when the evaporator pressure value is increased to 1700kPa, then the indoor fan operates at the low wind gear, and when the evaporator pressure value is increased to 2300kPa, the indoor fan operates at a preset wind speed; and in the process that the pressure value of the evaporator is reduced from 2500kPa to 1500kPa, the indoor fan is firstly operated at a preset wind speed, when the pressure value of the evaporator is reduced to be below 2300kPa, the indoor fan is changed to be operated at a low wind level and then is kept to be operated at the low wind level, and when the pressure value of the evaporator is reduced to be below 1700kPa, the indoor fan is stopped.
Step S30: acquiring the exhaust pressure change rate corresponding to the air conditioning unit;
it should be noted that, when obtaining the system exhaust pressure value corresponding to the air conditioning unit, the exhaust pressure change rate corresponding to the air conditioning unit may be calculated based on the system exhaust pressure value, in a specific implementation, when the compressor is started, a first system exhaust pressure value corresponding to a start time and a second system exhaust pressure value corresponding to an end time of each unit time within a preset time period of the compressor start may be obtained in real time, a pressure difference value is calculated according to the first system exhaust pressure value and the second system exhaust pressure value, and the exhaust pressure change rate corresponding to the air conditioning unit is calculated according to an interval duration corresponding to the unit time period and the pressure difference value. The preset time period may be set according to actual needs, for example, when R410A refrigerant is selected, the preset time period may be set to 2 minutes to 5 minutes. For another example, when the unit time is set to be 1 second, the first system exhaust pressure value is Pd, and the second system exhaust pressure value is Pd', the exhaust pressure change rate Δ P | -Pd |/1.
Step S40: and determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode.
It is easy to understand that, when the system exhaust pressure value and the exhaust pressure change rate are obtained, the operation mode of the outdoor fan may be determined according to the system exhaust pressure value and the exhaust pressure change rate, and the outdoor fan may be controlled to operate in the outdoor fan operation mode (simultaneously with the control of the indoor fan). In a specific implementation, a corresponding outdoor fan operation mode may be determined according to a magnitude of system exhaust pressure, and then the outdoor fan operation mode may be further refined according to the exhaust pressure change rate, for example, the system exhaust pressure value may be compared with a preset exhaust pressure value, when the system exhaust pressure value is smaller than the preset exhaust pressure value, a corresponding first outdoor fan operation mode may be determined according to the exhaust pressure change rate, and the outdoor fan may be controlled to operate in the first outdoor fan operation mode; when the system exhaust pressure value is larger than or equal to the preset exhaust pressure value, determining a corresponding second outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode, so that the control precision of the outdoor fan is improved. Specifically, the preset exhaust pressure value may be set according to actual requirements, for example, when R410A refrigerant is selected, the preset exhaust pressure value may be set to 3000kPa (gauge pressure), which is not limited in this embodiment.
It should be noted that, in a specific implementation, the running time of the compressor 1 may also be obtained, and when the running time is greater than or equal to a preset running time, it is detected whether the starting-up heating instruction is received; or, when the compressor 1 is restarted, whether the starting-up heating instruction is received or not is detected, and the preset running time may be set according to actual requirements, so as to ensure that the air conditioning unit is not in the starting-up heating stage, and the cold air prevention function is not required to be executed.
In this embodiment, when a start-up heating instruction is received, an evaporator pressure value of an evaporator of an indoor fan and a system exhaust pressure value of an air conditioning unit are obtained, an indoor fan operation mode is determined according to the evaporator pressure value, the indoor fan is controlled to operate in the indoor fan operation mode, an exhaust pressure change rate corresponding to the air conditioning unit is obtained, an outdoor fan operation mode is determined according to the system exhaust pressure value and the exhaust pressure change rate, and the outdoor fan is controlled to operate in the outdoor fan operation mode. Compared with the prior art that the start and stop of the outdoor fan are controlled according to the external environment temperature of the air conditioning unit acquired by the temperature sensing bulb, and the start and stop of the indoor fan are controlled according to the pipe temperature of the indoor fan acquired by the temperature sensing bulb, the error caused by the temperature hysteresis of the temperature sensing bulb during detection and the influence on the control precision of the air conditioning unit cannot be avoided, in the embodiment, when a start-up heating instruction is received, the operation mode of the indoor fan is determined according to the acquired evaporator pressure value of the evaporator of the indoor fan, the indoor fan is controlled to operate in the operation mode of the indoor fan, the control precision of the indoor fan during the start-up heating stage is improved, the operation mode of the outdoor fan is determined according to the acquired system exhaust pressure value and exhaust pressure change rate of the air conditioning unit, and the outdoor fan is controlled to operate in the operation mode of the outdoor fan, the control precision of the outdoor fan in the starting and heating stage is improved, so that the control precision of the air conditioning unit in the starting and heating stage is improved, the judgment precision of the stopping phenomenon of the air conditioning unit due to high-voltage protection is also improved, and the operation reliability and the blowing experience of a user are further improved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for controlling the start-up of an air conditioning unit according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S40 includes:
step S401: when the system exhaust pressure value is smaller than a preset exhaust pressure value, determining a corresponding first outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the first outdoor fan operation mode;
it should be noted that, when the system exhaust pressure value is smaller than a preset exhaust pressure value, a corresponding first outdoor fan operation mode may be determined according to the exhaust pressure change rate, and the outdoor fan is controlled to operate in the first outdoor fan operation mode, where the first outdoor fan operation mode may be: when the exhaust pressure change rate is smaller than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to operate; when the discharge pressure change rate is greater than the first preset discharge pressure change rate and less than a second preset discharge pressure change rate, controlling the outdoor fan to maintain the current running state; and when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the outdoor fan to stop. Wherein, the preset exhaust pressure value, the first preset exhaust pressure change rate and the second preset exhaust pressure change rate can be set according to actual requirements, the first preset exhaust pressure change rate is smaller than the second preset exhaust pressure change rate, for example, when R410A refrigerant is selected, the preset exhaust pressure value can be set to 3000kPa (gauge pressure), the first preset exhaust pressure change rate is set to 50kPa/s, and the second preset exhaust pressure change rate is set to 100kPa/s, when the system exhaust pressure value is smaller than 3000kPa (gauge pressure), the outdoor fan can be controlled according to the magnitude of the exhaust pressure change rate, for example, when the exhaust pressure change rate is increased from 30kPa/s to 120kPa/s, when the exhaust pressure change rate is increased to 50kPa/s, the outdoor fan is started to operate, and the operation is kept until the exhaust pressure change rate is increased to 100kPa/s, the outdoor fan stops running; and in the process that the exhaust pressure change rate is reduced from 120kPa/s to 30kPa/s, the outdoor fan does not operate at first, and the outdoor fan is started to operate until the exhaust pressure change rate is reduced to 50kPa/s, so that the accuracy of controlling the outdoor fan according to the exhaust pressure change rate of the air conditioning unit when the system exhaust pressure value of the air conditioning unit is smaller than the preset exhaust pressure value is improved.
Step S402: and when the system exhaust pressure value is greater than or equal to the preset exhaust pressure value, determining a corresponding second outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode.
It is easy to understand that, when the system exhaust pressure value is greater than or equal to a preset exhaust pressure value, a corresponding second outdoor fan operation mode may be determined according to the exhaust pressure change rate, and the outdoor fan is controlled to operate in the second outdoor fan operation mode, where the second outdoor fan operation mode may be: when the exhaust pressure change rate is smaller than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to stop; when the exhaust pressure change rate is greater than the first preset exhaust pressure change rate and less than a second preset exhaust pressure change rate, controlling the outdoor fan to stop, and controlling the indoor fan to operate at a high wind gear; and when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the compressor to stop running and controlling the outdoor fan to be turned off in a delayed manner. Wherein, the preset exhaust pressure value, the first preset exhaust pressure change rate and the second preset exhaust pressure change rate can be set according to actual requirements, the first preset exhaust pressure change rate is smaller than the second preset exhaust pressure change rate, for example, when a R410A refrigerant is selected, the preset exhaust pressure value can be set to 3000kPa (gauge pressure), the first preset exhaust pressure change rate is set to 50kPa/s, and the second preset exhaust pressure change rate is set to 100kPa/s, when the system exhaust pressure value is smaller than 3000kPa (gauge pressure), the outdoor fan can be controlled according to the magnitude of the exhaust pressure change rate, for example, in the process that the exhaust pressure change rate is increased from 30kPa/s to 120kPa/s, the outdoor fan is controlled to stop running, when the exhaust pressure change rate is increased to more than 50kPa/s, the indoor fan is controlled to run at a high wind gear (can be the highest wind gear), and keeping the indoor fan running until the discharge pressure change rate is increased to above 100kPa/s, controlling the compressor to be closed, and closing the outdoor fan in a delayed manner (for example, delaying for 15 seconds); and in the process that the discharge pressure change rate is reduced from 120kPa/s to 30kPa/s, firstly controlling the compressor to stop running, controlling the outdoor fan to stop running and to be turned off in a delayed mode (for example, delaying for 15 seconds), and when the discharge pressure change rate is reduced to be below 100kPa/s, controlling the indoor fan to forcibly run at a high wind gear (which can be the highest wind gear) until the discharge pressure change rate is reduced to be below 50kPa/s, so that the accuracy of controlling the outdoor fan and the indoor fan according to the discharge pressure change rate of the air conditioning unit is improved when the system discharge pressure value of the air conditioning unit is greater than or equal to the preset discharge pressure value.
In this implementation, when the system exhaust pressure value is smaller than a preset exhaust pressure value, determining a corresponding first outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the first outdoor fan operation mode; and when the system exhaust pressure value is greater than or equal to the preset exhaust pressure value, determining a corresponding second outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode. Compared with the prior art that the starting and stopping of the outdoor fan are controlled according to the external environment temperature of the air conditioning unit acquired by the temperature sensing bulb, and according to the error caused by the temperature hysteresis of the temperature sensing bulb during detection and the influence on the control precision of the air conditioning unit, which cannot be avoided when the temperature sensing bulb acquires the pipe temperature of the indoor fan to control the starting and stopping of the indoor fan, the embodiment determines different outdoor fan operation modes according to the exhaust pressure value of the comparison system and the preset exhaust pressure value, namely a first outdoor fan operation mode and a second outdoor fan operation mode, and further refines the control modes of the indoor fan and the outdoor fan based on the discharge pressure change rate in the first outdoor fan operation mode and the second outdoor fan operation mode, the control precision of the indoor fan and the outdoor fan is further improved, and the operation reliability of the air conditioning unit and the blowing experience of a user are also improved.
In addition, an embodiment of the present invention further provides a storage medium, where an air conditioning unit startup control program is stored on the storage medium, and the air conditioning unit startup control program, when executed by a processor, implements the steps of the air conditioning unit startup control method described above.
Referring to fig. 5, fig. 5 is a block diagram showing the configuration of the air conditioning unit start-up control apparatus according to the first embodiment of the present invention.
As shown in fig. 5, the air conditioning unit startup control device according to the embodiment of the present invention includes:
the system comprises a pressure acquisition module 10, a pressure control module and a control module, wherein the pressure acquisition module is used for acquiring an evaporator pressure value of an indoor fan evaporator and a system exhaust pressure value of the air conditioning unit when a starting heating instruction is received;
the indoor unit control module 20 is configured to determine an indoor fan operation mode according to the evaporator pressure value, and control the indoor fan to operate in the indoor fan operation mode;
the pressure change rate calculation module 30 is configured to obtain an exhaust pressure change rate corresponding to the air conditioning unit;
and the outdoor unit control module 40 is configured to determine an outdoor unit operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and control the outdoor unit to operate in the outdoor unit operation mode.
In this embodiment, when a power-on heating instruction is received, an evaporator pressure value of the indoor fan evaporator and a system exhaust pressure value of the air conditioning unit are obtained, an indoor fan operation mode is determined according to the evaporator pressure value, the indoor fan is controlled to operate in the indoor fan operation mode, an exhaust pressure change rate corresponding to the air conditioning unit is obtained, an outdoor fan operation mode is determined according to the system exhaust pressure value and the exhaust pressure change rate, and the outdoor fan is controlled to operate in the outdoor fan operation mode. Compared with the prior art that the start and stop of the outdoor fan are controlled according to the external environment temperature of the air conditioning unit acquired by the temperature sensing bulb, and the start and stop of the indoor fan are controlled according to the pipe temperature of the indoor fan acquired by the temperature sensing bulb, the error caused by the temperature hysteresis of the temperature sensing bulb during detection and the influence on the control precision of the air conditioning unit cannot be avoided, in the embodiment, when a start-up heating instruction is received, the operation mode of the indoor fan is determined according to the acquired evaporator pressure value of the evaporator of the indoor fan, the indoor fan is controlled to operate in the operation mode of the indoor fan, the control precision of the indoor fan during the start-up heating stage is improved, the operation mode of the outdoor fan is determined according to the acquired system exhaust pressure value and exhaust pressure change rate of the air conditioning unit, and the outdoor fan is controlled to operate in the operation mode of the outdoor fan, the control precision of the outdoor fan in the starting and heating stage is improved, so that the control precision of the air conditioning unit in the starting and heating stage is improved, the judgment precision of the stopping phenomenon of the air conditioning unit caused by high-voltage protection is also improved, and the operation reliability and the blowing experience of a user are further improved.
A second embodiment of the air conditioning unit startup control device according to the present invention is proposed based on the first embodiment of the air conditioning unit startup control device according to the present invention.
In this embodiment, the indoor unit control module 20 is further configured to control the indoor fan not to start to operate when the evaporator pressure value is smaller than a first evaporator pressure value;
the indoor unit control module 20 is further configured to control the indoor fan to operate at a low wind gear when the evaporator pressure value is greater than or equal to the first evaporator pressure value and less than the second evaporator pressure value;
the indoor unit control module 20 is further configured to control the indoor fan to operate at a preset air speed when the evaporator pressure value is greater than or equal to the second evaporator pressure value.
The pressure change rate calculation module 30 is further configured to, when the compressor is started, obtain, in real time, a first system exhaust pressure value corresponding to a start time and a second system exhaust pressure value corresponding to an end time of each unit time interval within a preset time period of starting the compressor;
the pressure change rate calculation module 30 is further configured to calculate a pressure difference value according to the first system exhaust pressure value and the second system exhaust pressure value;
The pressure change rate calculating module 30 is further configured to calculate an exhaust pressure change rate corresponding to the air conditioning unit according to the interval duration corresponding to the unit time interval and the pressure difference value.
The outdoor unit control module 40 is further configured to determine a corresponding first outdoor unit operation mode according to the exhaust pressure change rate when the system exhaust pressure value is smaller than a preset exhaust pressure value, and control the outdoor unit to operate in the first outdoor unit operation mode;
the outdoor unit control module 40 is further configured to determine a corresponding second outdoor unit operation mode according to the discharge pressure change rate when the system discharge pressure value is greater than or equal to the preset discharge pressure value, and control the outdoor unit to operate in the second outdoor unit operation mode.
The outdoor unit control module 40 is further configured to control the outdoor fan to operate when the discharge pressure change rate is less than or equal to a first preset discharge pressure change rate;
the outdoor unit control module 40 is further configured to control the outdoor fan to maintain a current operation state when the discharge pressure change rate is greater than the first preset discharge pressure change rate and is less than a second preset discharge pressure change rate;
The outdoor unit control module 40 is further configured to control the outdoor fan to stop when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate.
The outdoor unit control module 40 is further configured to control the outdoor fan to stop when the discharge pressure change rate is less than or equal to a first preset discharge pressure change rate;
the outdoor unit control module 40 is further configured to control the outdoor fan to stop and control the indoor fan to operate at a high wind gear when the discharge pressure change rate is greater than the first preset discharge pressure change rate and is less than a second preset discharge pressure change rate;
the outdoor unit control module 40 is further configured to control the compressor to stop operating and control the outdoor fan to be turned off in a delayed manner when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate.
The pressure obtaining module 10 is further configured to obtain an operating time of the compressor;
the pressure obtaining module 10 is further configured to detect whether the startup heating instruction is received when the operation time is greater than or equal to a preset operation time;
the pressure obtaining module 10 is further configured to detect whether the startup heating instruction is received when the compressor is restarted.
Other embodiments or specific implementation manners of the air conditioning unit startup control device of the invention can refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A starting control method of an air conditioning unit comprises an indoor fan, an indoor fan evaporator and an outdoor fan, and is characterized by comprising the following steps:
when a starting heating instruction is received, acquiring an evaporator pressure value of an indoor fan evaporator and a system exhaust pressure value of the air conditioning unit;
determining an indoor fan operation mode according to the evaporator pressure value, and controlling the indoor fan to operate in the indoor fan operation mode;
acquiring the exhaust pressure change rate corresponding to the air conditioning unit;
determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode;
the step of determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode specifically includes:
When the system exhaust pressure value is smaller than a preset exhaust pressure value, determining a corresponding first outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the first outdoor fan operation mode;
when the system exhaust pressure value is greater than or equal to the preset exhaust pressure value, determining a corresponding second outdoor fan operation mode according to the exhaust pressure change rate, and controlling the outdoor fan to operate in the second outdoor fan operation mode;
the step of determining a corresponding first outdoor fan operation mode according to the discharge pressure change rate and controlling the outdoor fan to operate in the first outdoor fan operation mode specifically includes:
when the exhaust pressure change rate is less than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to operate;
when the discharge pressure change rate is greater than the first preset discharge pressure change rate and less than a second preset discharge pressure change rate, controlling the outdoor fan to maintain the current running state;
when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the outdoor fan to stop;
The step of determining a corresponding second outdoor fan operation mode according to the discharge pressure change rate and controlling the outdoor fan to operate in the second outdoor fan operation mode specifically includes:
when the exhaust pressure change rate is smaller than or equal to a first preset exhaust pressure change rate, controlling the outdoor fan to stop;
when the exhaust pressure change rate is greater than the first preset exhaust pressure change rate and less than a second preset exhaust pressure change rate, controlling the outdoor fan to stop, and controlling the indoor fan to operate at a high wind gear;
and when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate, controlling the compressor to stop running and controlling the outdoor fan to be turned off in a delayed manner.
2. The method for controlling starting up of an air conditioning unit according to claim 1, wherein the step of determining an indoor fan operation mode according to the evaporator pressure value and controlling the indoor fan to operate in the indoor fan operation mode includes:
when the pressure value of the evaporator is smaller than the pressure value of the first evaporator, controlling the indoor fan not to start to operate;
when the pressure value of the evaporator is greater than or equal to the pressure value of the first evaporator and smaller than the pressure value of the second evaporator, controlling the indoor fan to operate at a low wind gear;
And when the pressure value of the evaporator is greater than or equal to the pressure value of the second evaporator, controlling the indoor fan to operate at a preset air speed.
3. The method for controlling the start-up of an air conditioning unit according to claim 1, wherein the air conditioning unit further includes a compressor, and wherein the step of obtaining the discharge pressure variation rate corresponding to the air conditioning unit specifically includes:
when the compressor is started, acquiring a first system exhaust pressure value corresponding to the starting time and a second system exhaust pressure value corresponding to the ending time of each unit time interval in a preset time interval for starting the compressor in real time;
calculating a pressure difference value according to the first system exhaust pressure value and the second system exhaust pressure value;
and calculating the exhaust pressure change rate corresponding to the air conditioning unit according to the interval duration corresponding to the unit time interval and the pressure difference value.
4. The air conditioning unit startup control method according to claim 1, the air conditioning unit further including a compressor, wherein after the step of determining an outdoor fan operation mode based on the system discharge pressure value and the discharge pressure change rate, and controlling the outdoor fan to operate in the outdoor fan operation mode, further comprising:
Acquiring the running time of the compressor;
when the running time is more than or equal to the preset running time, detecting whether the starting heating instruction is received or not;
or the like, or a combination thereof,
and when the compressor is restarted, detecting whether the starting heating instruction is received or not.
5. An air conditioning unit start-up control device, the air conditioning unit includes indoor fan, indoor fan evaporimeter and outdoor fan, its characterized in that, air conditioning unit start-up control device includes:
the pressure acquisition module is used for acquiring an evaporator pressure value of the indoor fan evaporator and a system exhaust pressure value of the air conditioning unit when a starting heating instruction is received;
the indoor unit control module is used for determining an indoor fan operation mode according to the evaporator pressure value and controlling the indoor fan to operate in the indoor fan operation mode;
the pressure change rate calculation module is used for acquiring the exhaust pressure change rate corresponding to the air conditioning unit;
the outdoor unit control module is used for determining an outdoor fan operation mode according to the system exhaust pressure value and the exhaust pressure change rate and controlling the outdoor fan to operate in the outdoor fan operation mode;
The outdoor unit control module is further configured to determine a corresponding first outdoor unit operation mode according to the exhaust pressure change rate and control the outdoor unit to operate in the first outdoor unit operation mode when the system exhaust pressure value is smaller than a preset exhaust pressure value;
the outdoor unit control module is further configured to determine a corresponding second outdoor unit operation mode according to the exhaust pressure change rate when the system exhaust pressure value is greater than or equal to the preset exhaust pressure value, and control the outdoor unit to operate in the second outdoor unit operation mode;
the outdoor unit control module is also used for controlling the outdoor fan to operate when the discharge pressure change rate is less than or equal to a first preset discharge pressure change rate;
the outdoor unit control module is further used for controlling the outdoor fan to maintain the current running state when the discharge pressure change rate is greater than the first preset discharge pressure change rate and is less than a second preset discharge pressure change rate;
the outdoor unit control module is further used for controlling the outdoor fan to stop when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate;
The outdoor unit control module is further used for controlling the outdoor fan to stop when the discharge pressure change rate is smaller than or equal to a first preset discharge pressure change rate;
the outdoor unit control module is further used for controlling the outdoor fan to stop and controlling the indoor fan to operate at a high wind gear when the exhaust pressure change rate is greater than the first preset exhaust pressure change rate and less than a second preset exhaust pressure change rate;
and the outdoor unit control module is also used for controlling the compressor to stop running and controlling the outdoor fan to be closed in a delayed manner when the discharge pressure change rate is greater than or equal to the second preset discharge pressure change rate.
6. An air conditioning unit startup control apparatus characterized by comprising: a memory, a processor and an air conditioning unit startup control program stored on the memory and operable on the processor, the air conditioning unit startup control program being configured to implement the steps of the air conditioning unit startup control method according to any one of claims 1 to 4.
7. A storage medium having stored thereon an air conditioning unit startup control program that, when executed by a processor, implements the steps of the air conditioning unit startup control method according to any one of claims 1 to 4.
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| CN113606760B (en) * | 2021-07-28 | 2022-07-12 | 珠海格力电器股份有限公司 | Temperature adjusting device control method and device, electronic device and storage medium |
| CN115899998A (en) * | 2023-01-06 | 2023-04-04 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and air conditioner |
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| CN111750481A (en) * | 2019-03-27 | 2020-10-09 | 日立江森自控空调有限公司 | Air conditioner control method and air conditioner system |
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| CN105650817B (en) * | 2016-01-25 | 2018-09-04 | 美的集团武汉制冷设备有限公司 | Control method, control device and the air conditioner of air conditioner |
| CN106895562B (en) * | 2017-03-06 | 2018-10-19 | 珠海格力电器股份有限公司 | Anti-cold air control method, apparatus, air-conditioning and computer readable storage medium |
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