WO2018214767A1 - 一种定频空调器控制方法和定频空调器 - Google Patents
一种定频空调器控制方法和定频空调器 Download PDFInfo
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- WO2018214767A1 WO2018214767A1 PCT/CN2018/086645 CN2018086645W WO2018214767A1 WO 2018214767 A1 WO2018214767 A1 WO 2018214767A1 CN 2018086645 W CN2018086645 W CN 2018086645W WO 2018214767 A1 WO2018214767 A1 WO 2018214767A1
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- WIPO (PCT)
- Prior art keywords
- signal
- air conditioner
- controller
- indoor fan
- power
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Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
Definitions
- the invention relates to the technical field of air conditioning, and in particular to a method for controlling a fixed frequency air conditioner and a fixed frequency air conditioner.
- the refrigeration system used in the fixed-frequency air conditioner adjusts the temperature of the room by controlling the start and stop of the compressor. During the control of the fixed-frequency air conditioner, the rotation speed of the compressor does not change.
- the prior art usually designs a UPS and a battery to supply power to the fixed frequency air conditioner.
- the fixed-frequency air conditioner operates continuously under the power supply of the battery. Since the storage capacity of the battery is fixed, if the start and stop of the compressor is adjusted according to the heat load of the air conditioner, the actual power supply time is difficult to be guaranteed, and a lot of power is wasted due to frequent start and stop.
- the invention provides a method for controlling a fixed frequency air conditioner to solve the problem that the air conditioning effect and the power supply time are difficult to balance when the fixed frequency air conditioner is powered by the UPS and the battery.
- the invention provides a method for controlling a fixed frequency air conditioner, comprising the following steps:
- the main frequency air conditioner stores a power control mechanism of the mains supply and an emergency control mechanism of the battery power supply
- the refrigeration circuit of the fixed frequency air conditioner includes a first phase disposed in parallel between the outdoor heat exchanger and the indoor heat exchanger.
- a refrigerant passage and a second refrigerant passage wherein the first refrigerant passage is provided with a first throttle mechanism, and the second refrigerant passage is provided with a first electromagnetic valve, and the first refrigerant passage is kept normally open ;
- the utility power is interrupted, and the controller of the fixed frequency air conditioner calls the emergency control mechanism.
- the input variable of the emergency control mechanism is a battery power signal, and the output variable is a solenoid valve switch control signal, a compressor switch control signal, and/or an indoor fan. Speed control signal;
- the controller divides the input battery power signal into multiple levels, corresponding to the battery power signal of each stage, and the controller that operates according to the emergency control mechanism outputs a solenoid valve switch control signal, and a compressor switch control Signal, and / or an indoor fan speed signal.
- the battery power signal is successively decremented into three levels.
- the controller When the battery power signal is the first stage, the controller outputs a first solenoid valve switch control signal, the first solenoid valve is controlled to be turned on, the second refrigerant channel is turned on, and the controller outputs a compressor switch control signal for controlling continuous operation of the compressor, the controller outputting a first indoor fan speed signal, and controlling the indoor fan speed to be a product of a maximum fan speed of the indoor fan and a first indoor fan speed ratio coefficient;
- the controller When the battery power signal is the second stage, the controller outputs a second solenoid valve switch control signal, controlling the first solenoid valve to be opened, the second refrigerant passage is turned on, and the controller outputting The second compressor switch control signal controls the compressor interval start-stop operation; the controller outputs the second indoor fan speed signal, and controls the indoor fan speed to be the product of the indoor fan maximum speed and the second indoor fan speed proportional coefficient;
- the controller When the battery power signal is the third stage, the controller outputs a third solenoid valve switch control signal, the first solenoid valve is controlled to be closed, the second refrigerant passage is turned off, and the controller outputs a third compressor switch control signal, controlling the compressor to stop; the controller outputs a third indoor fan speed signal, and controlling the indoor fan speed to be the highest speed;
- the first indoor fan speed proportional coefficient and the second indoor fan speed proportional coefficient are sequentially decreased.
- the interval period is 20 minutes.
- the UPS processor sends an emergency request signal for calling the emergency control mechanism.
- the controller of the fixed frequency air conditioner determines whether the emergency request signal meets the pre- Setting a condition; if the emergency request signal satisfies the preset condition, the controller invokes the emergency control mechanism, and the first signal input path of the controller establishes communication with the first signal output path of the UPS processor, Receiving a battery power signal sent by the first signal output path of the UPS processor, the controller uses the battery power signal as a setting input variable of the emergency control mechanism, and the controller outputs a solenoid valve switch according to the emergency control mechanism a signal, a compressor switch control signal, and an indoor fan speed signal; if the emergency request signal does not satisfy the preset condition, the first signal input path of the controller refuses to establish communication with the first signal output path of the UPS processor The fixed frequency air conditioner is shut down.
- the method further includes the following steps:
- the UPS processor sends a power request signal for invoking a power control mechanism.
- the controller of the fixed frequency air conditioner determines whether the power request signal meets a preset condition; When the power signal meets the preset condition, the controller invokes the power control mechanism, the first signal input path of the controller establishes communication with the room temperature sensor, and receives a temperature detection signal input by the room temperature sensor, the control The difference between the temperature detection signal and the set temperature signal is used as a set input variable of the power control mechanism, and the controller controls the start and stop of the fixed frequency air conditioner compressor and the indoor fan speed according to the power control mechanism, and controls the A solenoid valve is closed; if the power request signal does not satisfy the preset condition, the first signal path of the controller refuses to establish communication with the room temperature sensor, and the controller outputs a control signal according to the power control mechanism.
- the emergency control mechanism when invoked, if the emergency request signal satisfies the preset condition, the first signal output path of the controller sends a battery power signal to the air conditioner display device.
- the control method of the fixed frequency air conditioner disclosed by the invention, the compressor, the refrigerant distribution state and the indoor fan operate according to the magnitude of the battery power in different operating states, the temperature fluctuation during the operation is small, the compressor operating state is reasonable, and the battery is avoided. Frequent output of starting current reduces battery run time while avoiding the impact on other appliances and the already weak grid.
- a fixed frequency air conditioner is also provided, which adopts a fixed frequency air conditioner control method.
- the fixed frequency air conditioner control method comprises the following steps: storing a power supply control mechanism of a mains supply and an emergency control mechanism of a battery power supply in a fixed frequency air conditioner, wherein the refrigeration circuit of the fixed frequency air conditioner comprises a parallel arrangement in outdoor heat a first refrigerant passage and a second refrigerant passage between the exchanger and the indoor heat exchanger, wherein the first refrigerant passage is provided with a first throttle mechanism, and the second refrigerant passage is provided with a first solenoid valve The first refrigerant passage is maintained in a normally open state;
- the utility power is interrupted, and the controller of the fixed frequency air conditioner calls the emergency control mechanism.
- the input variable of the emergency control mechanism is a battery power signal, and the output variable is a solenoid valve switch control signal, a compressor switch control signal, and/or an indoor fan. Speed control signal;
- the controller divides the input battery power signal into multiple levels, corresponding to the battery power signal of each stage, and the controller that operates according to the emergency control mechanism outputs a solenoid valve switch control signal, and a compressor switch control Signal, and / or an indoor fan speed signal.
- the fixed-frequency air conditioner disclosed by the invention provides a fixed-frequency air conditioner with good user experience according to the characteristics of battery power supply.
- FIG. 1 is a flow chart of a first embodiment of a method for controlling a fixed frequency air conditioner according to the present invention
- FIG. 2 is a flow chart of a second embodiment of a method for controlling a fixed frequency air conditioner according to the present invention
- FIG. 3 is a flow chart of a third embodiment of a method for controlling a fixed frequency air conditioner according to the present invention.
- FIG. 4 is a flow chart of a fourth embodiment of a method for controlling a fixed frequency air conditioner according to the present invention.
- the method for controlling a fixed frequency air conditioner disclosed by the present invention comprises the following steps:
- a power supply control mechanism for the mains supply and an emergency power supply mechanism for the battery supply are stored in the fixed frequency air conditioner.
- the fixed-frequency air conditioner receives an instruction from the remote controller through the indoor unit, and compares the command with the temperature measured by the room temperature sensor.
- the compressor works, the refrigeration cycle is started, the outdoor fan is operated after 2s delay, and the indoor fan wind speed and swinging leaf are operated according to the set state.
- the controller works according to the power control mechanism, if the indoor temperature is lower than the set temperature, it enters the stop state, the compressor and the outdoor fan stop running, and the indoor fan wind speed and the swinging leaf still operate according to the set state.
- the indoor temperature is higher than the set temperature, but the difference does not exceed 1 °C, the operating state at the previous moment is maintained.
- the refrigeration circuit of the fixed frequency air conditioner includes a first refrigerant passage and a second refrigerant passage that are disposed in parallel between the outdoor heat exchanger and the indoor heat exchanger, and the first refrigerant passage is provided with a first In the throttle mechanism, a first solenoid valve is disposed on the second refrigerant passage, the first refrigerant passage is maintained in a normally open state, and the first throttle device is preferably a capillary tube. When operating in the power control mechanism, the first solenoid valve is closed, cutting off the second refrigerant passage. If there is a sudden power outage or a power outage starts at a set time, the controller of the fixed frequency air conditioner calls the emergency control mechanism.
- the input variable is no longer the difference between the set temperatures corresponding to the remote control commands of the room temperature sensor, avoiding the complex coupling relationship between multiple components in the refrigeration system and the external environment and workload.
- the purpose of the emergency control mechanism is to achieve a maximum balance between limited battery power and the cooling effect of the air conditioner. Therefore, it is preferable to design the controller under the operation of the emergency control mechanism to be a single-input, multi-output control system.
- the battery power signal is selected as the input variable, and the solenoid valve switch control signal, the compressor switch control signal, and the indoor fan speed are output variables.
- the on-off of the second refrigerant passage is controlled by the solenoid valve, thereby adjusting the flow rate and pressure of the refrigerant to reduce the power consumption of the compressor.
- the compressor switch control signal Through the compressor switch control signal, the compressor starts and stops under the control of non-temperature conditions, and the start and stop is more reasonable. Further optimization of the air circulation is achieved by the indoor fan speed. If the hardware data processing capability of the controller of the fixed-frequency air conditioner is weak, or the fixed power-off time is short, the controller under the emergency control mechanism can be designed to be a single-input single-output control system, preferably selecting the battery power signal as Input variable, solenoid valve switch control signal is the output variable.
- the control of each component of the fixed-frequency air conditioner has obvious hysteresis, and it takes a certain time to reach the control target.
- the battery power signal needs to be divided into multiple levels.
- One way in which the battery charge signal can be graded is laboratory data. Specifically, when the controller invokes the power control mechanism, it measures the consumption of the control target battery. Record the correspondence between power consumption and running time. The experiment uses a single variable form.
- the first solenoid valve is in the open state, the compressor is continuously operated, and the control target is to eliminate the temperature difference between the room temperature and the set temperature, and record the battery power consumption and the continuous running time of the compressor;
- the first solenoid valve In the off state the compressor is continuously operated, and the control target is to eliminate the temperature difference between the room temperature and the set temperature, and record the battery power consumption and the continuous running time of the compressor.
- the battery power signal is graded. And find the corresponding advantage of a certain set temperature, battery power, solenoid valve status, compressor status and indoor fan.
- the most advantageous is the multiple sets of discrete data, corresponding to the multiple discrete temperature points closest to the set temperature, and at the same time the battery temperature corresponding to the discrete temperature point is optimal, the obtained solenoid valve state, compressor state and indoor fan status.
- the most advantageous is stored in the controller in the form of a data table.
- the controller classifies the collected battery power signal, and outputs a compressor switch control signal, a solenoid valve switch control signal and an indoor fan speed signal corresponding to each level of battery power signal, and maintains the battery power signal.
- the solenoid valve switch control signal, the compressor switch control signal, and the indoor fan speed signal remain unchanged. If there is only one compressor switch control signal as the output variable, then the compressor switch control signal remains unchanged when the battery charge signal belongs to the stage.
- the compressor, refrigerant distribution state and indoor fan operate in different operating states according to the battery capacity.
- the temperature fluctuation is small, the compressor operating state is reasonable, and the battery is frequently outputted to reduce the starting current and reduce The running time of the battery while avoiding the impact on other appliances and the already weak grid.
- the preferred emergency control mechanism that is, the single-input and multi-output emergency control mechanism.
- the battery power signal is successively decremented into three levels.
- the three-level battery power signal can keep the air conditioner running smoothly, and will not change sharply at the boundary threshold, which will impact the battery power supply.
- the controller outputs a first solenoid valve switch control signal to control the first electromagnetic
- the valve is switched from the closed state to the open state, and the second refrigerant passage is turned on, so that the flow rate of the refrigerant flowing through the first throttle device is reduced.
- the controller outputs a first compressor switch control signal to control the continuous operation of the compressor to keep the compressor running smoothly.
- the controller outputs a first indoor fan speed signal, and controls the indoor fan speed to be the product of the maximum speed of the indoor fan and the first indoor fan speed proportional coefficient.
- the first indoor fan speed ratio coefficient is preferably one. When the first indoor fan speed proportional coefficient is 1, the indoor fan speed is 1100 rpm.
- each collected battery signal needs to be compared with the upper limit and the lower limit respectively, in order to determine whether or not in the classification, in order to improve the operation speed of the emergency control mechanism, the following method is further adopted.
- the physical signal range of the input variable and the output variable is always bounded. For example, the battery power will not exceed all of its power. In actual work, it is more desirable to start when the battery power is around 90%. Active intervention, of course, will not be lower than its protection value (usually set to 10%), while the output variable is a switching signal with two states, and the speed of the indoor fan does not exceed 1100 rpm.
- the above limits are only preferred values and are not limiting of the solution.
- the range of the battery's power can be converted to a centrally distributed symmetric number field (-n,...,0 ,...,n), further select a plurality of discrete points within the range of the battery power, and may select one every 0.2, that is, also convert the five discrete power data into a proportional relationship between the neutral point and the zero point.
- the conversion number field is the selected factor and the number of selected discrete points can be adjusted.
- the control system can quickly form output variables for further control.
- the terminal voltage of the battery is continuously decreased as the use process, or the battery power is not full when the power is turned off.
- the controller When the battery power signal drops to the second stage, preferably [40%, 70%), the controller outputs a second solenoid valve switch control signal, and controls the second solenoid valve to remain open, or from the closed state. Switch to the on state.
- the controller outputs a second compressor switch control signal to control the intermittent start and stop of the compressor.
- the second indoor fan speed signal is output, and the indoor fan speed is controlled as a product of the maximum fan speed of the indoor fan and the speed coefficient of the second indoor fan.
- the second indoor fan speed proportional coefficient is preferably 0.91.
- the start-stop interval of the compressor is preferably 20 minutes, that is, the compressor is controlled to start for 20 minutes, closed for 20 minutes, and alternately operated.
- the controller When the battery power signal is the third stage, preferably [10%, 40%), the controller outputs a third solenoid valve switch control signal, controls the first solenoid valve to close, and cuts off the second refrigerant passage, and simultaneously The third compressor switch control signal is output to control the compressor to stop.
- the controller outputs a third indoor fan speed signal, and controls the indoor fan speed to be the highest speed;
- the first indoor fan speed proportional coefficient and the second indoor fan speed proportional coefficient are sequentially decreased.
- the above scale factor may be equal amplitude decreasing or unequal amplitude decreasing.
- the above scale factors are stored independently and have consecutive addresses, which are convenient for the controller to call at any time.
- the method for controlling the fixed frequency air conditioner disclosed in the present invention further includes the following steps:
- the utility power is interrupted, and the UPS processor sends an emergency request signal for calling the emergency control mechanism.
- the controller of the fixed frequency air conditioner determines whether the emergency request signal meets a preset condition.
- the preset conditions include, but are not limited to, determination of the emergency request signal voltage and frequency to obtain whether the output of the inverter is in a normal state.
- the controller invokes the emergency control mechanism, the first signal input path of the controller and the UPS processor a signal output path establishes communication, receives a battery power signal sent by the first signal output path of the UPS processor, and the controller uses the battery power signal as a set input variable of the emergency control mechanism, and the controller follows the emergency
- the control mechanism controls the working state of the fixed frequency air conditioner compressor, the working state of the electromagnetic valve and the indoor fan speed; if the emergency request signal does not satisfy the preset condition, the first signal input path rejection and UPS processing of the controller
- the first signal output path establishes communication, and the fixed frequency air conditioner stops.
- the method for controlling a fixed frequency air conditioner disclosed by the present invention further includes the following steps:
- the utility power is restored, and the UPS processor sends a power request signal for calling the power control mechanism.
- the controller of the fixed frequency air conditioner determines whether the power request signal meets a preset condition. Preset conditions include, but are not limited to, a determination of the power request signal voltage and frequency to indicate whether the output of the utility is a normal state. If the power signal meets the preset condition, the controller invokes the power control mechanism, and the first signal input path of the controller establishes communication with the room temperature sensor, and receives a temperature detection signal input by the room temperature sensor.
- the controller uses the difference between the temperature detection signal and the set temperature signal as a set input variable of the power control mechanism, and the controller controls the start and stop of the fixed frequency air conditioner compressor and the indoor fan speed according to the power control mechanism, and Control the first solenoid valve to close. If the power request signal does not satisfy the preset condition, the first signal path of the controller refuses to establish communication with the room temperature sensor. Then, the control signal is output according to the emergency control mechanism until the power request signal meets the preset condition.
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Abstract
一种定频空调器控制方法,包括:存储有市电供电的电源控制机制和蓄电池供电的应急控制机制,定频空调器的制冷回路包括并联设置在室外热交换器和室内热交换器之间的第一制冷剂通路和第二制冷剂通路,第一制冷剂通路上设置有第一节流机构,第二制冷剂通路上设置有第一电磁阀,第一制冷剂通路保持常开状态;市电中断,定频空调器的控制器调用应急控制机制;控制器将输入的蓄电池电量信号分为多级,对应每一级蓄电池电量信号,按照应急控制机制工作的控制器输出一个电磁阀开关控制信号,一个压缩机开关控制信号,和/或一个室内风机转速信号。还公开了一种定频空调器。
Description
本发明涉及空气调节技术领域,尤其涉及一种定频空调器控制方法、和定频空调器。
定频空调器中所采用的制冷系统,通过控制压缩机的启停来对房间温度进行调节,在定频空调器的控制过程中,压缩机的转速不变。
目前有些国家电网不稳定,经常停电。为了保证定频空调器的运行,现有技术中通常设计采用UPS和蓄电池给定频空调器供电。当电力中断时,定频空调器在蓄电池的供电下不间断运行。由于蓄电池的蓄电量是固定的,如果一直维持根据空调热负荷调节压缩机的启停,那么实际供电时间难以得到保证,而且由于频繁启停浪费了许多电量。
因此,现有技术存在当定频空调器采用UPS和蓄电池供电时,空气调节效果和供电时间难以达到平衡的问题。
本发明提供一种定频空调器控制方法,以解决现有技术当定频空调器采用UPS和蓄电池供电时,空气调节效果和供电时间难以达到平衡的问题。
本发明提供一种定频空调器控制方法,包括以下步骤:
在定频空调器中存储有市电供电的电源控制机制和蓄电池供电的应急控制机制,所述定频空调器的制冷回路包括并联设置在室外热交换器和室内热交换器之间的第一制冷剂通路和第二制冷剂通路,所述第一制冷剂通路上设置有第一节流机构,第二制冷剂通路上设置有第一电磁阀,所述第一制冷剂通路保持常开状态;
市电中断,定频空调器的控制器调用所述应急控制机制,所述应急控制机制的输入变量为蓄电池电量信号,输出变量为电磁阀开关控制信号,压缩机开关控制信号和/或室内风机转速控制信号;
控制器将输入的所述蓄电池电量信号分为多级,对应每一级所述蓄电池电量信号,按照所述应急控制机制工作的所述控制器输出一个电磁阀开关控制信号,一个压缩机开关控制信号,和/或一个室内风机转速信号。
进一步的,所述蓄电池电量信号依次递减分为三级,
当所述蓄电池电量信号为第一级时,所述控制器输出第一电磁阀开关控制信号,控制所述第一电磁阀开启,所述第二制冷剂通路导通,所述控制器输出第一压缩机开关控制信号,控制压缩机连续运行,所述控制器输出第一室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第一室内风机转速比例系数的乘积;
当所述蓄电池电量信号为第二级时,所述控制器输出第二电磁阀开关控制信号,控制所述第一电磁阀开启,所述第二制冷剂通路导通,所述控制器输出第二压缩机开关控制信号,控制压缩机间隔启停运行;所述控制器输出第二室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第二室内风机转速比例系数的乘积;
当所述蓄电池电量信号为第三级时,所述控制器输出第三电磁阀开关控制信号,控制所述第一电磁阀关闭,所述第二制冷剂通路关断,所述控制器输出第三压缩机开关控制信号,控制所述压缩机停机;所述控制器输出第三室内风机转速信号,控制所述室内风机转速为最高转速;
其中,所述第一室内风机转速比例系数和第二室内风机转速比例系数依次递减。
优选的,当所述压缩机间隔启停运行时,间隔周期为20分钟。
进一步的,市电中断,UPS处理器发送用于调用所述应急控制机制的应急请求信号,当接收到所述应急请求信号后,定频空调器的控制器判断所述应急请求信号是否符合预设条件;若所述应急请求信号满足所述预设条件,则所述控制器调用所述应急控制机制,所述控制器的第一信号输入通路和UPS处理器第一信号输出通路建立通信,接收UPS处理器第一信号输出通路发送的蓄电池电量信号,所述控制器将所述蓄电池电量信号作为所述应急控制机制的设定输入变量,控制器按照所述应急控制机制输出电磁阀开关控制信号、压缩机开关控制信号和室内风机转速信号;若所述应急请求信号不满足所述预设条件,则所述控制器的第一信号输入通路拒绝和UPS处理器第一信号输出通路建立通信,定频空调器停机。
进一步的,还包括以下步骤:
市电恢复,UPS处理器发送用于调用电源控制机制的电源请求信号,当接收到所述电源请求信号后,定频空调器的控制器判断所述电源请求信号是否符合预设条件;若所述电源信号满足所述预设条件,则所述控制器调用所述电源控制机制,所述控制器的第一信号输入通路和室温传感器建立通信,接收室温传感器输入的温度检测信号,所述控制器将温度检测信号和设定温度信号的差值作为所述电源控制机制的设定输入变量,控制器按照所述电源控制机制控制定频空调器压缩机启停和室内风机转速,并控制第一电磁阀关闭;若所述电源请求信号不满足所述预设条件,则所述控制器的第一信号通路拒绝和室温传感器建立通信,控制器按照所述电源控制机制输出控制信号。
进一步的,调用所述应急控制机制时,若所述应急请求信号满足所述预设条件,控制器的第一信号输出通路发送蓄电池电量信号至空调器显示装置。
本发明所公开的定频空调器控制方法,压缩机、制冷剂分配状态和室内风机依据蓄电池电量的大小,在不同运转状态下运行,运行过程中温度波动小,压缩机运行状态合理,避免蓄电池频繁输出启动电流,降低蓄电池的运行时间,同时避免对其它电器和本来就薄弱的电网的冲击。
还提供一种定频空调器,采用定频空调器控制方法。所述定频空调器控制方法包括以下步骤:在定频空调器中存储有市电供电的电源控制机制和蓄电池供电的应急控制机制,所述定频空调器的制冷回路包括并联设置在室外热交换器和室内热交换器之间的第一制冷剂通路和第二制冷剂通路,所述第一制冷剂通路上设置有第一节流机构,第二制冷剂通路上设置有第一电磁阀,所述第一制冷剂通路保持常开状态;
市电中断,定频空调器的控制器调用所述应急控制机制,所述应急控制机制的输入变量为蓄电池电量信号,输出变量为电磁阀开关控制信号,压缩机开关控制信号和/或室内风机转速控制信号;
控制器将输入的所述蓄电池电量信号分为多级,对应每一级所述蓄电池电量信号,按照所述应急控制机制工作的所述控制器输出一个电磁阀开关控制信号,一个压缩机开关控制信号,和/或一个室内风机转速信号。
本发明所公开的定频空调器,根据蓄电池供电的特点,提供一种用户体验好的定频空调器。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明所公开的定频空调器控制方法第一实施例的流程图;
图2为本发明所公开的定频空调器控制方法第二实施例的流程图;
图3为本发明所公开的定频空调器控制方法第三实施例的流程图;
图4为本发明所公开的定频空调器控制方法第四实施例的流程图。
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
如图1所示,本发明所公开的定频空调器控制方法包括以下步骤:
首先,为了应对突发或者定时的停电情况,在定频空调器中存储有市电供电的电源控制机制和蓄电池供电的应急供电机制。正常市电供电时,定频空调器通过室内机接收来自遥控器的指令,将指令和室温传感器测得的温度进行比较。当测得的室内温度高于设定温度时,压缩机工作,启动制冷循环,室外风机延时2s后工作,室内风机风速、摆叶按照设定状态运行。当控制器按照电源控制机制工作时,如果室内温度低于设定温度,则进入停机状态,压缩机和室外风机停止运行,室内风机风速、摆叶仍按照设定状态运行。当室内温度高于设定温度,但差值不超过1℃时,保持前一时刻的运行状态。在本实施例中,定频空调器的制冷回路包括并联设置在室外热交换器和室内热交换器之间的第一制冷剂通路和第二制冷剂通路,第一制冷剂通路上设置有第一节流机构,第二制冷剂通路上设置有第一电磁阀,第一制冷剂通路保持常开状态,第一节流装置优选为毛细管。当工作在电源控制机制时,第一电磁阀关闭,切断第二制冷剂通路。如果突发停电情况,或者在设定的时间点开始停电,则定频空调器的控制器调用应急控制机制。对于应急控制机制来说,其输入变量不再是室温传感器的遥控器指令对应的设定温度之间的差值,避免制冷系统中多个部件与外部环境和工作负荷之间形成复杂的耦合关系,应急控制机制的目的是在有限的蓄电池电量和空调器的制冷效果之间达到最大程度的平衡。因此,优选设计应急控制机制工作下的控制器是一个单输入,多输出的控制系统。选取蓄电池电量信号作为输入变量,电磁阀开关控制信号、压缩机开关控制信号和室内风机转速为输出变量。通过电磁阀控制第二制冷剂通路的通断,进而对制冷剂的流量和压力进行调节,降低压缩机的耗电。通过压缩机开关控制信号,使得压缩机在非温度条件的控制下启停,启停更为合理。进一步通过室内风机转速形成更为优化的空气循环。如果定频空调器的控制器的硬件数据处理能力较弱,或者固定停电时间较短,也可以设计应急控制机制工作下的控制器是一个单输入单输出的控制系统,优选选取蓄电池电量信号作为输入变量,电磁阀开关控制信号为输出变量。
相对于普通的家用电器或者民用电器,定频空调器各个组成部分的控制具有明显的滞后性,需要一定时间达到控制目标。当控制系统选定输入、输出变量之后,需要先将蓄电池电量信号分为多级。蓄电池电量信号的等级划分一种可采用的方式是实验室数据。具体来说,当控制器调用电源控制机制时,测算维持控制目标蓄电池电量的消耗情况。记录电量消耗和运行时间的对应关系。实验时采用单变量的形式,例如,第一电磁阀处于开启状态,压缩机连续运行,控制目标为消除室温和设定温度的温差,记录蓄电池电量消耗和压缩机连续运行时间;第一电磁阀处于关闭状态,压缩机连续运行,控制目标为消除室温和设定温度的温差,记录蓄电池电量消耗和压缩机连续运行时间。从而利用二组实验结果得到蓄电池电量和电磁阀控制信号之间的关系。类似的,也可以得到蓄电池电量和压缩机开关控制信号之间的关系,以及蓄电池电量和室内风机转速之间的关系。根据实验室得到的电量消耗量和电磁阀控制信号、压缩机控制信号和室内风机转速之间的关系,对蓄电池电量信号分级。并找到对应某一个设定温度,蓄电池电量、电磁阀状态、压缩机状态和室内风机的最优点。最优点是指多组离散数据,对应达到最靠近设定温度的多个离散温度点,并且同时该离散温度点对应的蓄电池电量最优时,所得到的电磁阀状态、压缩机状态和室内风机状态。最优点以数据表的形式存储在控制器中。实际使用时,控制器对采集到的蓄电池电量信号分级,同时对应每一级蓄电池电量信号输出一个压缩机开关控制信号,一个电磁阀开关控制信号和一个室内风机转速信号,并保持当蓄电池电量信号属于该分级时,电磁阀开关控制信号、压缩机开关控制信号和室内风机转速信号保持不变。如果仅有一个压缩机开关控制信号作为输出变量,则保持当蓄电池电量信号属于该分级时,压缩机开关控制信号保持不变。
在上述控制方式下,压缩机、制冷剂分配状态和室内风机依据蓄电池电量的大小,在不同运转状态下运行,运行过程中温度波动小,压缩机运行状态合理,避免蓄电池频繁输出启动电流,降低蓄电池的运行时间,同时避免对其它电器和本来就薄弱的电网的冲击。
以下参照图2所示,具体介绍优选的应急控制机制,即单输入多输出的应急控制机制。根据实验数据和经验数据,蓄电池电量信号依次递减分为三级。三级蓄电池电量信号可以保持空调设备的运行平稳,不会在边界阈值发生剧烈的变化,对蓄电池供电形成冲击。具体来说,当蓄电池电量信号为第一级时,优选为[70%,90%),或者[70%,100%), 所述控制器输出第一电磁阀开关控制信号,控制第一电磁阀从关闭状态切换至开启状态,导通第二制冷剂通路,使得流过第一节流装置的制冷剂流量减少。同时控制器输出第一压缩机开关控制信号,控制所述压缩机连续运行,保持压缩机运转平稳。控制器输出第一室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第一室内风机转速比例系数的乘积。上述的第一室内风机转速比例系数优选为1。当第一室内风机转速比例系数为1时,室内风机转速为1100转/分钟。
在上述控制过程中,每一个采集到的蓄电池信号都需要分别与上限和下限做比较,才能判定是否在该分级中,为了提高应急控制机制的运算速度,进一步采用了以下的方法。在设备的实际运行过程中,输入变量和输出变量的物理信号范围总是有界的,比如蓄电池电量不会超过其全部电量,实际工作中,也更希望在蓄电池电量在90%左右时才开始主动干预,当然不会低于其保护值(通常设置为10%),而输出变量为具有两种状态的开关信号,且室内风机的转速不超过1100转/分钟。上述界限只是优选的数值,并不是对方案的限制。对于(10%,90%)蓄电池电量来说,利用中位点和零点之间的比例关系,可以将蓄电池的电量的取值范围转换为呈中心分布的对称数域(-n,…,0,…,n),进一步在蓄电池电量的取值范围内选取多个离散点,可以每隔0.2选取一个,即同样以中位点和零点之间的比例关系,转换得到5个离散电量数据成的数组,对称分布得到{-2,-1,0,1,2}的数组,m=2。利用参数m和n可以进一步得到比例系数,k
1=m/n, 将比例系数存储在控制器中。将采集到的蓄电池电量与调用的比例系数k相乘,得到整数部分即为该信号对应的分级。转换数域是选取的因子以及选择离散点的个数都可以进行调整。 控制系统可以迅速地形成输出变量,进行下一步控制。
蓄电池的端电压随着使用过程不断下降,或者本身断电时蓄电池的电量就不满。当所述蓄电池电量信号下降至为第二级时,优选为[40%,70%),所述控制器输出第二电磁阀开关控制信号,控制第二电磁阀维持开启状态,或者从关闭状态切换至开启状态。控制器输出第二压缩机开关控制信号,控制所述压缩机间歇启停。输出第二室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第二室内风机转速比例系数的乘积。其中,第二室内风机转速比例系数优选为0.91。压缩机的启停间隔周期优选为20分钟,即控制压缩机启动20分钟,关闭20分钟,交替运行。
当所述蓄电池电量信号为第三级时,优选为[10%,40%),所述控制器输出第三电磁阀开关控制信号,控制第一电磁阀关闭,切断第二制冷剂通路,同时输出第三压缩机开关控制信号,控制压缩机停机。控制器输出第三室内风机转速信号,控制所述室内风机转速为最高转速;
其中,所述第一室内风机转速比例系数和第二室内风机转速比例系数依次递减。上述比例系数可以是等幅递减,也可以是不等幅递减的。上述比例系数独立存储且具有连续的地址,便于控制器随时调用。
参见图3所示,用蓄电池进行供电时,为了起到对UPS和空调器的双重保护,本发明所公开的定频空调器控制方法还包括以下步骤:
市电中断,UPS处理器发送用于调用所述应急控制机制的应急请求信号,当接收到所述应急请求信号后,定频空调器的控制器判断所述应急请求信号是否符合预设条件。预设条件包括但不限于对应急请求信号电压和频率的判定,以获得逆变器的输出是否是正常状态。若所述应急请求信号满足所述预设条件,则表示逆变器输出属于正常状态,则所述控制器调用所述应急控制机制,所述控制器的第一信号输入通路和UPS处理器第一信号输出通路建立通信,接收UPS处理器第一信号输出通路发送的蓄电池电量信号,所述控制器将所述蓄电池电量信号作为所述应急控制机制的设定输入变量,控制器按照所述应急控制机制控制定频空调器压缩机工作状态、电磁阀工作状态和室内风机转速;若所述应急请求信号不满足所述预设条件,则所述控制器的第一信号输入通路拒绝和UPS处理器第一信号输出通路建立通信,定频空调器停机。
参见图4所示,市电刚回复时,有可能市电的电源质量较差,在对空调要求较高的使用场合,需要保证空调的持续正常运行,不能出现频繁地在市电电源和蓄电池电源之间切换的情况。所以,本发明所公开的定频空调器控制方法还包括以下步骤:
市电恢复,UPS处理器发送用于调用电源控制机制的电源请求信号,当接收到所述电源请求信号后,定频空调器的控制器判断所述电源请求信号是否符合预设条件。预设条件包括但不限于对电源请求信号电压和频率的判定,以表示市电的输出是否是正常状态。若所述电源信号满足所述预设条件,则所述控制器调用所述电源控制机制,所述控制器的第一信号输入通路和室温传感器建立通信,接收室温传感器输入的温度检测信号,所述控制器将温度检测信号和设定温度信号的差值作为所述电源控制机制的设定输入变量,控制器按照所述电源控制机制控制定频空调器压缩机启停和室内风机转速,并控制第一电磁阀关闭。若所述电源请求信号不满足所述预设条件,则所述控制器的第一信号通路拒绝和室温传感器建立通信。则维持按照应急控制机制输出控制信号,直至电源请求信号符合预设条件。
为了使得用户了解目前的蓄电池电量,调用所述应急控制机制时,若所述应急请求信号满足所述预设条件,控制器的第一信号输出通路发送蓄电池电量信号至空调器显示装置。
同时还公开了一种空调器,空调器采用如上述实施例所详细描述的控制方法,在此不再赘述。采用上述实施例控制方法的空调器可以达到同样的技术效果。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (7)
- 一种定频空调器控制方法,其特征在于,包括以下步骤:在定频空调器中存储有市电供电的电源控制机制和蓄电池供电的应急控制机制,所述定频空调器的制冷回路包括并联设置在室外热交换器和室内热交换器之间的第一制冷剂通路和第二制冷剂通路,所述第一制冷剂通路上设置有第一节流机构,第二制冷剂通路上设置有第一电磁阀,所述第一制冷剂通路保持常开状态;市电中断,定频空调器的控制器调用所述应急控制机制,所述应急控制机制的输入变量为蓄电池电量信号,输出变量为电磁阀开关控制信号,压缩机开关控制信号和/或室内风机转速控制信号;控制器将输入的所述蓄电池电量信号分为多级,对应每一级所述蓄电池电量信号,按照所述应急控制机制工作的所述控制器输出一个电磁阀开关控制信号,一个压缩机开关控制信号,和/或一个室内风机转速信号。
- 根据权利要求1所述的定频空调器控制方法,其特征在于:所述蓄电池电量信号依次递减分为三级,当所述蓄电池电量信号为第一级时,所述控制器输出第一电磁阀开关控制信号,控制所述第一电磁阀开启,所述第二制冷剂通路导通,所述控制器输出第一压缩机开关控制信号,控制压缩机连续运行,所述控制器输出第一室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第一室内风机转速比例系数的乘积;当所述蓄电池电量信号为第二级时,所述控制器输出第二电磁阀开关控制信号,控制所述第一电磁阀开启,所述第二制冷剂通路导通,所述控制器输出第二压缩机开关控制信号,控制压缩机间隔启停运行;所述控制器输出第二室内风机转速信号,控制所述室内风机转速为室内风机最高转速与第二室内风机转速比例系数的乘积;当所述蓄电池电量信号为第三级时,所述控制器输出第三电磁阀开关控制信号,控制所述第一电磁阀关闭,所述第二制冷剂通路关断,所述控制器输出第三压缩机开关控制信号,控制所述压缩机停机;所述控制器输出第三室内风机转速信号,控制所述室内风机转速为最高转速;其中,所述第一室内风机转速比例系数和第二室内风机转速比例系数依次递减。
- 根据权利要求2所述的定频空调器控制方法,其特征在于,当所述压缩机间隔启停运行时,间隔周期为20分钟。
- 根据权利要求3所述的定频空调器控制方法,其特征在于:市电中断,UPS处理器发送用于调用所述应急控制机制的应急请求信号,当接收到所述应急请求信号后,定频空调器的控制器判断所述应急请求信号是否符合预设条件;若所述应急请求信号满足所述预设条件,则所述控制器调用所述应急控制机制,所述控制器的第一信号输入通路和UPS处理器第一信号输出通路建立通信,接收UPS处理器第一信号输出通路发送的蓄电池电量信号,所述控制器将所述蓄电池电量信号作为所述应急控制机制的设定输入变量,控制器按照所述应急控制机制输出电磁阀开关控制信号、压缩机开关控制信号和室内风机转速信号;若所述应急请求信号不满足所述预设条件,则所述控制器的第一信号输入通路拒绝和UPS处理器第一信号输出通路建立通信,定频空调器停机。
- 根据权利要求4所述的定频空调器控制方法,其特征在于,还包括以下步骤:市电恢复,UPS处理器发送用于调用电源控制机制的电源请求信号,当接收到所述电源请求信号后,定频空调器的控制器判断所述电源请求信号是否符合预设条件;若所述电源信号满足所述预设条件,则所述控制器调用所述电源控制机制,所述控制器的第一信号输入通路和室温传感器建立通信,接收室温传感器输入的温度检测信号,所述控制器将温度检测信号和设定温度信号的差值作为所述电源控制机制的设定输入变量,控制器按照所述电源控制机制控制定频空调器压缩机启停和室内风机转速,并控制第一电磁阀关闭;若所述电源请求信号不满足所述预设条件,则所述控制器的第一信号通路拒绝和室温传感器建立通信,控制器按照所述电源控制机制输出控制信号。
- 根据权利要求5所述的变频空调控制方法,其特征在于,调用所述应急控制机制时,若所述应急请求信号满足所述预设条件,控制器的第一信号输出通路发送蓄电池电量信号至空调器显示装置。
- 一种定频空调器,其特征在于,应用如权利要求1至6任一项所述的定频空调器控制方法。
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| CN110864408B (zh) * | 2018-08-08 | 2021-09-24 | 青岛海尔空调器有限总公司 | 空调器及其控制方法 |
| CN109780688A (zh) * | 2018-11-12 | 2019-05-21 | 青岛海尔空调器有限总公司 | 空调器及其控制方法 |
| CN110375422B (zh) * | 2019-07-26 | 2021-07-20 | 广东美的制冷设备有限公司 | 空调的控制方法、系统及空气调节设备 |
| CN112665247A (zh) * | 2020-12-17 | 2021-04-16 | 珠海格力电器股份有限公司 | 空调的应急控制方法及其相关设备、养殖场 |
| CN115682331B (zh) * | 2021-07-30 | 2026-03-31 | 美的集团股份有限公司 | 空调器控制方法、空调器、存储介质及装置 |
| CN115076978A (zh) * | 2022-05-17 | 2022-09-20 | 重庆海尔空调器有限公司 | 空调器的控制方法、装置、电子设备、存储介质及空调器 |
| CN115218373A (zh) * | 2022-06-30 | 2022-10-21 | 青岛海尔空调器有限总公司 | 空调器的控制方法 |
| CN115218374A (zh) * | 2022-06-30 | 2022-10-21 | 青岛海尔空调器有限总公司 | 空调器的控制方法 |
| CN115235087A (zh) * | 2022-06-30 | 2022-10-25 | 青岛海尔空调器有限总公司 | 空调系统的控制方法 |
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