CN110686381B - Air conditioner control method and device and computer readable storage medium - Google Patents
Air conditioner control method and device and computer readable storage medium Download PDFInfo
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- CN110686381B CN110686381B CN201910980594.XA CN201910980594A CN110686381B CN 110686381 B CN110686381 B CN 110686381B CN 201910980594 A CN201910980594 A CN 201910980594A CN 110686381 B CN110686381 B CN 110686381B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—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
- F24F11/85—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 variable-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses an air conditioner control method, which comprises the following steps: when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency; acquiring a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time; and if the compressor meets the preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature. The invention also discloses an air conditioner control device and a computer readable storage medium. This send out through can confirm whether need start-up compressor according to leaving water temperature to the running state through adjusting compressor and water pump promotes the leaving water temperature of air-cooled heat pump hot and cold water unit, and then in time adjusts leaving water temperature, in order to promote central air conditioning's use travelling comfort, promotes user experience.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to an air conditioning control method and apparatus, and a computer-readable storage medium.
Background
At present, in a central air conditioner provided with an air-cooled heat pump cold and hot water unit, the air-cooled heat pump cold and hot water unit absorbs low-grade heat energy in air, the low-grade heat energy is converted into high-grade heat energy through heat pump circulation, a refrigerant side pushes the refrigerant circulation through a compressor, and a water side pushes the circulation through a circulating water pump. At present, for an air-cooled heat pump water chiller-heater unit, the control mode of a common water side circulating water pump is as follows: when the water pump is in the starting state, the water pump continuously operates. The main machine of the air-cooled heat pump cold and hot water unit is in a starting state, and the two conditions are as follows: the first one is: the total water outlet temperature of the air-cooled heat pump cold and hot water unit does not reach the set value of the unit, and at the moment, a compressor of the air-cooled heat pump cold and hot water unit is in a working state; and the second mode is that the outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set value, and at the moment, a compressor of the air-cooled heat pump cold and hot water unit is in a standby state.
However, in the second case, the water pump of the air-cooled heat pump water chiller-heater unit usually operates at a fixed frequency, and if the total outlet water temperature does not reach the set value of the unit during the operation process, it is difficult to raise the total outlet water temperature in time, which results in poor comfort of users.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, an air conditioner control device and a computer readable storage medium, and aims to solve the technical problem that the total outlet water temperature is difficult to timely raise when a compressor of an air-cooled heat pump cold and hot water unit is in a standby state.
In order to achieve the above object, the present invention provides an air conditioner control method, which is applied to a central air conditioner provided with an air-cooled heat pump cold and hot water unit, and comprises the following steps:
when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency;
acquiring a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time;
and if the compressor meets the preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature.
Further, in an embodiment, the step of adjusting the operation states of the compressor and the water pump based on the second outlet water temperature includes:
determining the energy demand of the central air conditioner based on the second outlet water temperature;
adjusting the operating conditions of the compressor and the water pump based on the energy requirement.
Further, in an embodiment, the air-cooled heat pump chiller-heater unit is provided with a plurality of sets of unit units arranged in parallel, the unit units are provided with compressors of the air-cooled heat pump chiller-heater unit, and the step of adjusting the operating states of the compressors and the water pump based on the energy requirement includes:
determining the number of compressors to be started based on the energy demand;
determining a first target operating frequency of the water pump based on the number to be started;
starting the compressor based on the number to be started, and adjusting the operating frequency of the water pump based on the first target operating frequency.
Further, in an embodiment, the step of determining the first target operating frequency of the water pump based on the number to be started comprises:
acquiring the initial operating frequency of the water pump before the compressor stops operating;
and determining a first target operation frequency of the water pump based on the number to be started, the initial operation frequency and the frequency correction value corresponding to the water pump.
Further, in an embodiment, the step of determining the energy requirement of the central air conditioner based on the second outlet water temperature includes:
calculating a first temperature difference between the second outlet water temperature and the set temperature;
determining the energy demand based on the first temperature difference.
Further, in an embodiment, after the step of obtaining the second outlet water temperature of the air-cooled heat pump chiller-heater unit after the preset time period, the air-conditioning control method further includes:
and determining whether the second outlet water temperature is lower than the set temperature, wherein if the second outlet water temperature is lower than the set temperature, the compressor is determined to meet a preset starting condition.
Further, in an embodiment, after the step of obtaining the second outlet water temperature of the air-cooled heat pump chiller-heater unit after the preset time period, the air-conditioning control method further includes:
if the compressor is determined not to meet the preset starting condition based on the second outlet water temperature, acquiring a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops running and a second return water temperature of the air-cooled heat pump cold and hot water unit at present;
and adjusting the running frequency of the water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature.
Further, in an embodiment, the step of adjusting the operating frequency of the water pump in the air-cooled heat pump chiller-heater unit based on the first return water temperature and the second return water temperature includes:
calculating a second temperature difference between the first return water temperature and the second return water temperature;
determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval;
determining the current frequency of the water pump and the frequency correction value, and determining the second target operation frequency;
adjusting an operating frequency of the water pump based on the second target operating frequency.
Further, in an embodiment, after the step of adjusting the operating frequency of the water pump in the air-cooled heat pump chiller-heater unit based on the first return water temperature and the second return water temperature, the air-conditioning control method further includes:
and continuously executing the step of obtaining the second outlet water temperature of the air-cooled heat pump cold and hot water unit after the preset time.
Further, to achieve the above object, the present invention also provides an air conditioning control device including: the air conditioner control method comprises a memory, a processor and an air conditioner control program which is stored on the memory and can run on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method when being executed by the processor.
Further, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon an air conditioning control program, which when executed by a processor, implements the steps of the aforementioned air conditioning control method.
According to the invention, when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, the compressor of the air-cooled heat pump cold and hot water unit is controlled to stop running, and the water pump of the air-cooled heat pump cold and hot water unit is controlled to run according to a preset frequency; then obtaining a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time; and then if the compressor is determined to meet the preset starting condition based on the second water outlet temperature, the running states of the compressor and the water pump are adjusted based on the second water outlet temperature, whether the compressor needs to be started can be determined according to the water outlet temperature, the water outlet temperature of the air-cooled heat pump cold and hot water unit is increased by adjusting the running states of the compressor and the water pump, the water outlet temperature is adjusted in time, the use comfort of the central air conditioner is improved, and the user experience is improved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning 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 an air conditioning control method according to the present invention;
fig. 3 is a schematic structural diagram of the air-cooled heat pump water chiller-heater unit 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.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of an air conditioning control device according to an embodiment of the present invention.
As shown in fig. 1, the air conditioning control apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. 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., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the air conditioner control device may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like.
It will be understood by those skilled in the art that the configuration of the climate control device illustrated in fig. 1 does not constitute a limitation of the climate control device and may include more or fewer components than those illustrated, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an air conditioner control program.
In the air conditioner control device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be used to call an air conditioning control program stored in the memory 1005.
In the present embodiment, the air conditioning control device includes: the air conditioner control system comprises a memory 1005, a processor 1001 and an air conditioner control program which is stored on the memory 1005 and can run on the processor 1001, wherein when the processor 1001 calls the air conditioner control program stored in the memory 1005, the following operations are executed:
when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency;
acquiring a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time;
and if the compressor meets the preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
determining the energy demand of the central air conditioner based on the second outlet water temperature;
adjusting the operating conditions of the compressor and the water pump based on the energy requirement.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
determining the number of compressors to be started based on the energy demand;
determining a first target operating frequency of the water pump based on the number to be started;
starting the compressor based on the number to be started, and adjusting the operating frequency of the water pump based on the first target operating frequency.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
acquiring the initial operating frequency of the water pump before the compressor stops operating;
and determining a first target operation frequency of the water pump based on the number to be started, the initial operation frequency and the frequency correction value corresponding to the water pump.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
calculating a first temperature difference between the second outlet water temperature and the set temperature;
determining the energy demand based on the first temperature difference.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
and determining whether the second outlet water temperature is lower than the set temperature, wherein if the second outlet water temperature is lower than the set temperature, the compressor is determined to meet a preset starting condition.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
if the compressor is determined not to meet the preset starting condition based on the second outlet water temperature, acquiring a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops running and a second return water temperature of the air-cooled heat pump cold and hot water unit at present;
and adjusting the running frequency of the water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
calculating a second temperature difference between the first return water temperature and the second return water temperature;
determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval;
determining the current frequency of the water pump and the frequency correction value, and determining the second target operation frequency;
adjusting an operating frequency of the water pump based on the second target operating frequency.
Further, the processor 1001 may call the air conditioner control program stored in the memory 1005, and also perform the following operations:
and continuously executing the step of obtaining the second outlet water temperature of the air-cooled heat pump cold and hot water unit after the preset time.
The invention also provides an air conditioner control method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the air conditioner control method of the invention.
In this embodiment, the air conditioner control method is applied to a central air conditioner provided with an air-cooled heat pump cold and hot water unit, and the central air conditioner includes an air-cooled heat pump cold and hot water unit 1, a controller 2, an inlet water temperature sensor 3, an outlet water temperature sensor 4, and a water pump 5. The water inlet temperature sensor 3 is located on a water inlet pipe of the air-cooled heat pump cold and hot water unit and used for detecting the water inlet temperature (namely the water return temperature) of the air-cooled heat pump cold and hot water unit, the water outlet temperature sensor 4 is located on a water outlet pipe of the air-cooled heat pump cold and hot water unit and used for detecting the water outlet temperature of the air-cooled heat pump cold and hot water unit, and the air-cooled heat pump cold and hot water unit 1, the water inlet temperature sensor 3, the water outlet temperature sensor 4 and the water pump 5 are respectively in communication connection with the controller 2. The air-cooled heat pump water chiller-heater unit 1 comprises a plurality of unit units, and the unit units are arranged in parallel.
Step S100, when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency;
in this embodiment, when the central air conditioner is started, the compressor and the water pump of the air-cooled heat pump chiller-heater unit are simultaneously started, the outlet temperature of the refrigerant in the outlet pipe of the air-cooled heat pump chiller-heater unit is raised and started through the compressor and the water pump, and the first outlet temperature is monitored in real time through the outlet temperature sensor 4.
And if the current first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches the set temperature, controlling the compressor to stop running, and controlling the water pump to run according to the preset frequency so as to reduce the energy consumption of the air-cooled heat pump cold and hot water unit by closing the compressor.
Step S200, acquiring a second outlet water temperature of the air-cooled heat pump cold and hot water unit after a preset time;
in this embodiment, when the compressor stops operating, the second outlet temperature of the air-cooled heat pump chiller-heater unit after the preset time is obtained, that is, when the duration after the current time reaches the preset time, the second outlet temperature is obtained according to the current detection result of the outlet temperature sensor 4.
And step S300, if the compressor meets a preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature.
In this embodiment, when the second outlet water temperature is obtained, it is determined whether the compressor meets the preset starting condition based on the second outlet water temperature, specifically, it is determined whether the second outlet water temperature is less than the set temperature, and if the second outlet water temperature is less than the set temperature, it is determined that the compressor meets the preset starting condition.
And then, when the compressor meets a preset starting condition, adjusting the running states of the compressor and the water pump based on the second water outlet temperature, specifically, determining the target running frequency of the compressor and the water pump which need to be started according to the second water outlet temperature, starting the compressor which needs to be started and controlling the water pump to run according to the target running frequency, and further improving the water outlet temperature by controlling the water pump and the compressor when the water outlet temperature is lower so as to improve the use comfort of a user.
Further, in an embodiment, after the step S200, the method further includes:
and determining whether the second outlet water temperature is lower than the set temperature, wherein if the second outlet water temperature is lower than the set temperature, the compressor meets a preset starting condition.
It can be understood that whether the compressor meets the preset starting condition can be determined according to the current return water temperature of the air-cooled heat pump cold and hot water unit, specifically, whether the current return water temperature of the air-cooled heat pump cold and hot water unit is smaller than the preset starting temperature corresponding to the preset starting condition of the compressor is judged, if the current return water temperature of the air-cooled heat pump cold and hot water unit is smaller than the preset starting temperature, the compressor is judged to meet the preset starting condition, and if not, the compressor is judged not to meet the preset starting condition.
According to the air conditioner control method provided by the embodiment, when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches the set temperature, the compressor of the air-cooled heat pump cold and hot water unit is controlled to stop running, and the water pump of the air-cooled heat pump cold and hot water unit is controlled to run according to the preset frequency; then obtaining a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time; and then if the compressor is determined to meet the preset starting condition based on the second water outlet temperature, the running states of the compressor and the water pump are adjusted based on the second water outlet temperature, whether the compressor needs to be started can be determined according to the water outlet temperature, the water outlet temperature of the air-cooled heat pump cold and hot water unit is increased by adjusting the running states of the compressor and the water pump, the water outlet temperature is adjusted in time, the use comfort of the central air conditioner is improved, and the user experience is improved.
A second embodiment of the air conditioner control method of the present invention is proposed based on the first embodiment, and in this embodiment, step S300 includes:
step S310, determining the energy demand of the central air conditioner based on the second outlet water temperature;
and step S320, adjusting the running states of the compressor and the water pump based on the energy requirement.
In this embodiment, when the compressor meets the preset starting condition, the energy requirement of the central air conditioner is determined based on the second outlet water temperature, so that the operating frequency of the compressor and the water pump which need to be started can be determined according to the energy requirement, and then the operating states of the compressor and the water pump need to be adjusted based on the energy requirement, that is, the operating frequency of the compressor and the water pump which need to be started is determined based on the energy requirement, and the operating frequency of the compressor and the water pump which need to be started is started and adjusted.
Further, in an embodiment, step S310 includes:
step S311, calculating a first temperature difference between the second outlet water temperature and the set temperature;
step S312, determining the energy demand based on the first temperature difference.
In this embodiment, when the compressor meets a preset starting condition, a first temperature difference between the second outlet water temperature and the set temperature is calculated, the energy requirement is determined according to the first temperature difference, the central air conditioner stores a plurality of mapping relationships between preset temperature ranges and the energy requirement in advance, the preset temperature range to which the first temperature difference belongs can be determined according to the plurality of preset temperature differences, and the energy requirement is obtained according to the preset temperature range to which the first temperature difference belongs.
In the air conditioner control method provided by the embodiment, the energy requirement of the central air conditioner is determined based on the second outlet water temperature; and then based on the operation states of the compressor and the water pump which can be adjusted, the compressor and the water pump can be accurately adjusted according to the energy of the central air conditioner, the control accuracy of the compressor and the water pump is improved, the water outlet temperature is adjusted in time, and the use comfort of the central air conditioner is improved.
Based on the second embodiment, a third embodiment of the air-conditioning control method according to the present invention is provided, in this embodiment, referring to fig. 3, the air-cooled heat pump chiller-heater unit is provided with a plurality of sets of unit units arranged in parallel, the unit units are provided with compressors of the air-cooled heat pump chiller-heater unit, and step S320 includes:
step S321, determining the number of the compressors to be started based on the energy demand;
step S322, determining a first target operation frequency of the water pump based on the quantity to be started;
and step S323, starting the compressors based on the number to be started, and adjusting the operating frequency of the water pump based on the first target operating frequency.
In this embodiment, the mapping relationship between a plurality of preset energy-required intervals and the starting number may be stored in advance, when the energy requirement of the central air conditioner is obtained, the preset energy-required interval to which the energy requirement of the central air conditioner belongs is determined in the plurality of preset energy-required intervals, and the number of the compressors to be started is determined according to the preset energy-required interval to which the energy requirement of the central air conditioner belongs and the mapping relationship; or, storing a mapping relation between a plurality of energy-demand levels and the starting number in advance, wherein each energy-demand level corresponds to a preset energy-demand interval, when the energy demand of the central air conditioner is obtained, determining the preset energy-demand interval to which the energy demand of the central air conditioner belongs in the plurality of preset energy-demand intervals, determining the energy-demand level corresponding to the energy demand of the central air conditioner, and determining the number of the compressors to be started according to the energy-demand level corresponding to the energy demand of the central air conditioner, the mapping relation between the energy-demand level and the starting number.
Then, determining a first target operation frequency of the water pump based on the number to be started; and starting the compressors based on the number to be started, and adjusting the operating frequency of the water pump based on the first target operating frequency, specifically, starting the compressors in the unit sets with the number corresponding to the number to be started in the air-cooled heat pump cold and hot water unit, wherein the unit sets with the number corresponding to the number to be started can be selected at will.
It can be understood that if the first target operating frequency is greater than the maximum operating frequency of the water pump, the water pump is controlled to operate at the maximum operating frequency; and if the second target operation frequency is less than or equal to the maximum operation frequency, controlling the water pump to operate according to the first target operation frequency.
Further, in an embodiment, step S322 includes:
step a, acquiring the initial operating frequency of the water pump before the compressor stops operating;
and b, determining a first target operation frequency of the water pump based on the number to be started, the initial operation frequency and the frequency correction value corresponding to the water pump.
In this embodiment, after the number to be started is determined, an initial operating frequency of the water pump before the compressor stops operating is obtained, and a first target operating frequency of the water pump is determined based on the number to be started, the initial operating frequency, and a frequency correction value corresponding to the water pump, specifically, the first target operating frequency is initial operating frequency + frequency correction value (number-1 to be started).
According to the air conditioner control method provided by the embodiment, the number of the compressors to be started is determined based on the energy demand; then determining a first target operation frequency of the water pump based on the quantity to be started; and then starting the compressors based on the number to be started, adjusting the operating frequency of the water pump based on the first target operating frequency, accurately determining the operating frequency of the compressors and the water pump to be started according to the requirement of the central air conditioner, improving the control accuracy of the compressors and the water pump, adjusting the water outlet temperature in time, and improving the use comfort of the central air conditioner. Meanwhile, the starting number of the compressors is reduced by reasonably combining and adjusting the compressors and the water pump, and low energy consumption is reduced on the premise of ensuring the use comfort of users.
Based on the above embodiments, a fourth embodiment of the air conditioning control method of the present invention is proposed, in the present embodiment, after step S200, the air conditioning control method further includes:
step S400, if it is determined that the compressor does not meet a preset starting condition based on the second outlet water temperature, acquiring a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops operating and a second return water temperature of the air-cooled heat pump cold and hot water unit at present;
and S500, adjusting the running frequency of the water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature.
In this embodiment, if it is determined that the compressor does not satisfy the preset starting condition based on the second outlet water temperature, the first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops operating, that is, the first return water temperature of the air-cooled heat pump cold and hot water unit before the adjustment of the operating frequency of the water pump, and the second return water temperature of the current air-cooled heat pump cold and hot water unit are obtained, and the second return water temperature is obtained according to the current detection result of the inlet water temperature sensor 3.
Then, based on first return water temperature and second return water temperature, adjust the operating frequency of central air conditioning mesopelagic pump, and then through the operating frequency of adjustment water pump to make this water pump operation at suitable frequency, reduce the water pump energy consumption under the prerequisite of guaranteeing user's use travelling comfort.
Further, in an embodiment, after the step S500, the method further includes: and continuously executing the step of obtaining the second outlet water temperature of the air-cooled heat pump cold and hot water unit after the preset time.
In the air conditioner control method provided by this embodiment, if it is determined that the compressor does not meet the preset starting condition based on the second outlet water temperature, a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops operating and a second return water temperature of the air-cooled heat pump cold and hot water unit at present are obtained; and then adjusting the running frequency of a water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature, and adjusting the running frequency of the water pump according to the return water temperature to enable the water pump to run at a proper frequency, so that the energy consumption of the water pump is reduced on the premise of ensuring the use comfort of a user.
A fifth embodiment of the air conditioner controlling method of the present invention is proposed based on the fourth embodiment, and in this embodiment, the step S500 includes:
step S510, calculating a second temperature difference between the first return water temperature and the second return water temperature;
step S520, determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval;
step S530, determining the current frequency of the water pump and the frequency correction value, and determining the second target operation frequency;
and S540, adjusting the operating frequency of the water pump based on the second target operating frequency.
In this embodiment, when it is determined that the compressor does not satisfy the preset starting condition based on the second return water temperature, a second temperature difference between the first return water temperature and the second return water temperature is calculated, where the second temperature difference is obtained by subtracting the second return water temperature from the first return water temperature.
And then, determining a target temperature interval corresponding to the temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval, wherein the central air conditioner stores a mapping relation between a plurality of preset temperature intervals and the frequency correction value, when the temperature difference is obtained, determining the preset temperature interval to which the temperature difference belongs, namely the target temperature interval, in the plurality of preset temperature intervals, and then acquiring the frequency correction value corresponding to the preset temperature interval to which the temperature difference belongs.
Then, determining the current frequency and the frequency correction value of the water pump, and determining a second target operation frequency, specifically, the second target operation frequency is the sum of the current frequency and the frequency correction value of the water pump, the frequency correction value includes various conditions that are greater than zero, equal to zero, and less than zero, and further, the second target operation frequency has various conditions that are greater than the current frequency of the water pump, equal to the current frequency of the water pump, and less than the current frequency of the water pump. And then adjusting the operating frequency of the water pump according to the second target operating frequency so as to accurately adjust the operating frequency of the water pump according to the return water temperature.
Further, in an embodiment, the step S540 includes:
c, judging whether the second target running frequency is greater than the maximum running frequency of the water pump or not when the frequency correction value is greater than zero;
step d, if the second target operation frequency is greater than the maximum operation frequency, controlling the water pump to operate according to the maximum operation frequency;
and e, if the second target operation frequency is less than or equal to the maximum operation frequency, controlling the water pump to operate according to the second target operation frequency.
In this embodiment, when the frequency correction value is greater than zero, that is, when the second target operating frequency is greater than the current frequency of the water pump, it is determined whether the second target operating frequency is greater than the maximum operating frequency of the water pump, if so, the water pump is controlled to operate according to the maximum operating frequency, otherwise, the water pump is controlled to operate according to the second target operating frequency, so as to prevent the operating frequency of the water pump from exceeding the maximum operating frequency and affecting the service life of the water pump. The maximum operating frequency is a maximum operating frequency at which the water pump normally operates, and may be a rated frequency of the water pump, for example.
Further, in another embodiment, step S540 includes:
f, when the frequency correction value is less than zero, judging whether the second target running frequency is less than the minimum running frequency of the water pump or not;
step g, if the second target operation frequency is smaller than the minimum operation frequency, controlling the water pump to operate according to the minimum operation frequency;
and h, if the second target operation frequency is greater than or equal to the minimum operation frequency, controlling the water pump to operate according to the second target operation frequency.
In this embodiment, when the frequency correction value is less than zero, that is, when the second target operating frequency is less than the current frequency of the water pump, it is determined whether the second target operating frequency is less than the minimum operating frequency of the water pump, if so, the water pump is controlled to operate according to the minimum operating frequency, otherwise, the water pump is controlled to operate according to the second target operating frequency, so as to prevent the operating frequency of the water pump from being lower than the minimum operating frequency and affecting the service life of the water pump. Wherein, the minimum operating frequency is the minimum operating frequency when the water pump normally operates.
In the air conditioner control method provided by this embodiment, a second temperature difference between the first return water temperature and the second return water temperature is calculated; then determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval; then determining the current frequency of the water pump and the frequency correction value, and determining the second target operating frequency; and then adjusting the operating frequency of the water pump based on the second target operating frequency, and improving the frequency adjustment accuracy of the water pump by accurately adjusting the operating frequency of the water pump according to the return water temperature.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where an air-conditioning control program is stored on the computer-readable storage medium, and when executed by a processor, the air-conditioning control program implements the following operations:
when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency;
acquiring a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time;
and if the compressor meets the preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
determining the energy demand of the central air conditioner based on the second outlet water temperature;
adjusting the operating conditions of the compressor and the water pump based on the energy requirement.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
determining the number of compressors to be started based on the energy demand;
determining a first target operating frequency of the water pump based on the number to be started;
starting the compressor based on the number to be started, and adjusting the operating frequency of the water pump based on the first target operating frequency.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
acquiring the initial operating frequency of the water pump before the compressor stops operating;
and determining a first target operation frequency of the water pump based on the number to be started, the initial operation frequency and the frequency correction value corresponding to the water pump.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
calculating a first temperature difference between the second outlet water temperature and the set temperature;
determining the energy demand based on the first temperature difference.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
and determining whether the second outlet water temperature is lower than the set temperature, wherein if the second outlet water temperature is lower than the set temperature, the compressor is determined to meet a preset starting condition.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
if the compressor is determined not to meet the preset starting condition based on the second outlet water temperature, acquiring a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops running and a second return water temperature of the air-cooled heat pump cold and hot water unit at present;
and adjusting the running frequency of the water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
calculating a second temperature difference between the first return water temperature and the second return water temperature;
determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval;
determining the current frequency of the water pump and the frequency correction value, and determining the second target operation frequency;
adjusting an operating frequency of the water pump based on the second target operating frequency.
Further, the air conditioning control program, when executed by the processor, further performs the following operations:
and continuously executing the step of obtaining the second outlet water temperature of the air-cooled heat pump cold and hot water unit after the preset time.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The air conditioner control method is characterized by being applied to a central air conditioner provided with an air-cooled heat pump cold and hot water unit, wherein the air-cooled heat pump cold and hot water unit is provided with a plurality of groups of unit units which are arranged in parallel, the unit units are provided with compressors of the air-cooled heat pump cold and hot water unit, and the air conditioner control method comprises the following steps:
when the first outlet water temperature of the air-cooled heat pump cold and hot water unit reaches a set temperature, controlling a compressor of the air-cooled heat pump cold and hot water unit to stop running, and controlling a water pump of the air-cooled heat pump cold and hot water unit to run according to a preset frequency;
acquiring a second outlet water temperature of the air-cooled heat pump water chiller-heater unit after a preset time;
if the compressor meets the preset starting condition based on the second water outlet temperature, adjusting the running states of the compressor and the water pump based on the second water outlet temperature;
the step of adjusting the operating conditions of the compressor and the water pump based on the second outlet water temperature comprises:
determining the energy demand of the central air conditioner based on the second outlet water temperature;
determining the number of compressors to be started based on the energy demand;
determining a first target operating frequency of the water pump based on the number to be started;
the method comprises the steps of obtaining an initial operation frequency of the water pump before the compressor stops operating, and determining a first target operation frequency of the water pump based on the number to be started, the initial operation frequency and a frequency correction value corresponding to the water pump, wherein the first target operation frequency is the initial operation frequency plus the frequency correction value (the number to be started-1).
2. The air conditioning control method according to claim 1, wherein the step of determining the energy demand of the central air conditioner based on the second outlet water temperature includes:
calculating a first temperature difference between the second outlet water temperature and the set temperature;
determining the energy demand based on the first temperature difference.
3. The air conditioning control method according to claim 1, wherein after the step of obtaining the second outlet water temperature of the air-cooled heat pump chiller-heater unit after the preset time period, the air conditioning control method further comprises:
and determining whether the second outlet water temperature is lower than the set temperature, wherein if the second outlet water temperature is lower than the set temperature, the compressor is determined to meet a preset starting condition.
4. The air conditioning control method according to any one of claims 1 to 3, wherein after the step of obtaining the second outlet water temperature of the air-cooled heat pump chiller-heater unit after a preset time period, the air conditioning control method further comprises:
if the compressor is determined not to meet the preset starting condition based on the second outlet water temperature, acquiring a first return water temperature of the air-cooled heat pump cold and hot water unit when the compressor stops running and a second return water temperature of the air-cooled heat pump cold and hot water unit at present;
and adjusting the running frequency of the water pump in the air-cooled heat pump cold and hot water unit based on the first return water temperature and the second return water temperature.
5. The air conditioning control method of claim 4, wherein the step of adjusting the operating frequency of the water pump in the air-cooled heat pump chiller-heater unit based on the first return water temperature and the second return water temperature comprises:
calculating a second temperature difference between the first return water temperature and the second return water temperature;
determining a target temperature interval corresponding to the second temperature difference, and acquiring a frequency correction value corresponding to the target temperature interval;
determining the current frequency of the water pump and the frequency correction value, and determining a second target operation frequency;
adjusting an operating frequency of the water pump based on the second target operating frequency.
6. The air conditioning control method according to claim 5, wherein the step of adjusting the operating frequency of the water pump based on the second target operating frequency includes:
when the frequency correction value is less than zero, judging whether the second target running frequency is less than the minimum running frequency of the water pump or not;
if the second target operation frequency is less than the minimum operation frequency, controlling the water pump to operate according to the minimum operation frequency;
and if the second target operation frequency is greater than or equal to the minimum operation frequency, controlling the water pump to operate according to the second target operation frequency.
7. The air conditioning control method according to claim 5, wherein the step of adjusting the operating frequency of the water pump based on the second target operating frequency includes:
when the frequency correction value is larger than zero, judging whether the second target running frequency is larger than the maximum running frequency of the water pump or not;
if the second target operation frequency is greater than the maximum operation frequency, controlling the water pump to operate according to the maximum operation frequency;
and if the second target operation frequency is less than or equal to the maximum operation frequency, controlling the water pump to operate according to the second target operation frequency.
8. The air conditioning control method according to claim 4, wherein after the step of adjusting the operating frequency of the water pump in the air-cooled heat pump chiller-heater unit based on the first return water temperature and the second return water temperature, the air conditioning control method further comprises:
and continuously executing the step of obtaining the second outlet water temperature of the air-cooled heat pump cold and hot water unit after the preset time.
9. An air conditioning control device characterized by comprising: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program when executed by the processor implementing the steps of the air conditioning control method of any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an air-conditioning control program which, when executed by a processor, implements the steps of the air-conditioning control method according to any one of claims 1 to 8.
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| CN113701398A (en) * | 2021-09-01 | 2021-11-26 | 广东美的制冷设备有限公司 | Water heater control method, water heater and computer readable storage medium |
| CN113865148B (en) * | 2021-09-27 | 2023-03-24 | 广东美的制冷设备有限公司 | Heat pump unit, control method thereof and computer readable storage medium |
| CN114017903B (en) * | 2021-10-29 | 2023-03-28 | 青岛海信日立空调系统有限公司 | Floor heating and air conditioning integrated machine |
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