WO2024027319A1 - 空调器及其恒风量控制方法、装置、存储介质 - Google Patents

空调器及其恒风量控制方法、装置、存储介质 Download PDF

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Publication number
WO2024027319A1
WO2024027319A1 PCT/CN2023/097575 CN2023097575W WO2024027319A1 WO 2024027319 A1 WO2024027319 A1 WO 2024027319A1 CN 2023097575 W CN2023097575 W CN 2023097575W WO 2024027319 A1 WO2024027319 A1 WO 2024027319A1
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Prior art keywords
air volume
power
current
indoor fan
rotation speed
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PCT/CN2023/097575
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English (en)
French (fr)
Inventor
钟明胜
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广东美的暖通设备有限公司
合肥美的暖通设备有限公司
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Publication of WO2024027319A1 publication Critical patent/WO2024027319A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • 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
    • F24F2140/40—Damper positions, e.g. open or closed

Definitions

  • the present disclosure relates to the technical field of air conditioning control, and in particular to an air conditioner and its constant air volume control method, device, and storage medium.
  • Air conditioners are commonly used refrigeration equipment in modern households. They often work for a long time.
  • the heat exchanger will accumulate a lot of dust due to long-term work, which will lead to an increase in static pressure, a decrease in the output air volume, and a deterioration of the cooling effect.
  • the inconsistent length and height of the air ducts installed with the air outlets will also cause the static pressure to increase and the air volume to decrease, causing the heat exchanger to be unable to fully exchange heat, reducing the energy efficiency ratio and weakening the cooling effect.
  • the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
  • the first purpose of the present disclosure is to propose a constant air volume control method for an air conditioner, which can calculate the updated rotation speed using the preset relationship between rotation speed and power and the current rotation speed when the current power is equal to the target power. Then, the indoor fan is controlled to obtain the air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the second object of the present disclosure is to provide an air conditioner.
  • a third object of the present disclosure is to provide a computer-readable storage medium.
  • the fourth object of the present disclosure is to provide a constant air volume control device for an air conditioner.
  • the first embodiment of the present disclosure proposes a constant air volume control method for an air conditioner, which includes: obtaining the current rotation speed and current power of the indoor fan according to the air volume command; obtaining the update rotation speed, and the update rotation speed is between the current power and the current power.
  • the target power is equal, the preset relationship between speed and power and the current speed are calculated.
  • the target power is determined by the air volume command; the updated speed is used to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the preset relationship between the rotation speed and the power and the current rotation speed can be used to calculate the updated rotation speed, and then control the indoor fan. And obtain the air volume that matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the second embodiment of the present disclosure proposes an air conditioner, which includes a memory, a processor, and a constant air volume control program of the air conditioner stored in the memory and executable on the processor.
  • the processor executes the air conditioner.
  • the constant air volume control program is used, the constant air volume control method of the air conditioner in any of the above embodiments is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed, and then the updated rotation speed can be calculated.
  • the indoor fan is controlled to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • a third embodiment of the present disclosure provides a computer-readable storage medium on which a constant air volume control program of an air conditioner is stored.
  • the constant air volume control program of the air conditioner is executed by a processor, the above implementation is realized.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed. , and then control the indoor fan to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the fourth embodiment of the present disclosure proposes a constant air volume control device for an air conditioner, including: an acquisition unit for obtaining the current rotation speed and current power of the indoor fan according to the air volume instruction; a control unit for obtaining Update the speed, and use the update speed to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the update speed is calculated using the preset relationship between speed and power and the current speed when the current power is equal to the target power.
  • the target power is determined by the air volume command.
  • the updated rotation speed can be obtained by calculating the preset relationship between the rotation speed and the power and the current rotation speed, and then controlling the indoor fan to obtain The air volume matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • Figure 1 is a schematic flowchart of a constant air volume control method for an air conditioner according to some embodiments of the present disclosure
  • Figure 2 is a schematic flowchart of obtaining current rotation speed and current power according to some embodiments of the present disclosure
  • Figure 3 is a schematic diagram of obtaining update speed according to some embodiments of the present disclosure.
  • Figure 4 is a schematic structural diagram of a constant air volume control device of an air conditioner according to some embodiments of the present disclosure.
  • FIG. 1 is a schematic flowchart of a constant air volume control method for an air conditioner according to some embodiments of the present disclosure.
  • the constant air volume control method of the air conditioner may include:
  • the updated rotational speed is calculated using the preset relationship between rotational speed and power and the current rotational speed when the current power is equal to the target power.
  • the target power is determined by the air volume command.
  • the above constant air volume control method can use the preset relationship between speed and power and the current speed calculation to obtain the updated speed when the current power is equal to the target power, and then control the indoor fan to obtain the air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the air conditioner may be a duct air conditioner, etc.
  • the air duct air conditioner may be an air duct machine equipped with a squirrel cage type wind wheel, or other types of air duct machines.
  • the duct machine can be an embedded duct machine.
  • the air duct machine may include a main body, an indoor heat exchanger and an indoor fan arranged in the main body.
  • the indoor fan includes a motor and a wind wheel, and the motor is used to rotate the wind wheel.
  • the main body is equipped with an air outlet and a return air outlet.
  • an air volume command can be given, and the indoor fan can be controlled based on the air volume command.
  • the current speed and current power of the indoor fan can be obtained based on the air volume command, and the target power can be determined, and then the indoor fan can be controlled based on the air volume command.
  • the updated speed is calculated using the preset relationship between speed and power and the current speed, and then the indoor fan is controlled based on the updated speed so that the air volume output by the indoor fan matches the air volume command, so that even Changes in static pressure can also maintain the air volume output by the indoor fan.
  • the constant air volume control method of this embodiment can maintain the air volume of the indoor fan based on the air volume command when the static pressure changes, thereby ensuring the heat exchange effect, and the method is simple and reliable.
  • the current rotation speed and current power of the indoor fan are obtained according to the air volume instruction, include:
  • the preset rotation speed can be set in advance, and the preset rotation speed can be a rotation speed within the rotation speed range of the indoor fan.
  • the preset speed is obtained, and the indoor fan is controlled to run at the preset speed.
  • the current speed and current power are obtained.
  • the preset time can be set in advance.
  • the preset time is 2 minutes, that is, the indoor fan runs at the preset speed for 2 minutes to obtain the current speed and current power.
  • the preset time can be longer than the time required for the indoor fan's rotational speed to stabilize after it is started.
  • the specific value of the preset time can be set according to actual conditions and is not specifically limited here.
  • the current rotation speed can be obtained based on the motor position estimation of the indoor fan, and the current power can be obtained based on the real-time voltage and current estimation of the indoor fan.
  • the preset rotation speed is the minimum rotation speed of the indoor fan. Since the rotation speed is positively related to the air volume, the rotation speed of the indoor fan can be gradually adjusted from the minimum rotation speed, that is, the air volume output by the indoor fan can be gradually adjusted from the minimum air volume, so that the air volume matching the air volume command can be obtained.
  • the preset relationship between rotational speed and power includes a first preset relationship and a second preset relationship.
  • the first preset relationship includes a corresponding relationship between current power and current rotational speed
  • the second preset relationship includes a corresponding relationship between target power and current rotational speed. Update the corresponding relationship of rotation speed. In this way, based on different preset relationships between rotational speed and power, when the target power is equal to the current power, the updated rotational speed can be calculated based on the current rotational speed.
  • the first preset relationship is a cubic relationship between power and rotational speed, which not only accurately reflects the relationship between rotational speed and power, but also reduces the amount of calculation required to update the speed.
  • p is the indoor fan power
  • n is the indoor fan speed
  • ka, kb and kc are constants.
  • the constants ka, kb and kc can be obtained through curve fitting based on the experimental data.
  • p is the indoor fan power
  • n is the indoor fan speed
  • k4 is a constant.
  • formula (2) corresponds to a constant, it can be calculated based on a set of power and rotation speed. Therefore, the relationship between rotation speed and power corresponding to formula (2) can be used as the first preset relationship, that is, the current power and the corresponding relationship between the current speed and the current speed.
  • the constant k4 can be calculated from the first preset relationship; since the formula (1) contains multiple constants, the speed and power corresponding to the formula (1) can be relationship as the second default relationship, That is, the corresponding relationship between the target power and the updated speed, where the constants can be obtained through experimental testing in advance. It can be seen from formula (2) that the first preset relationship omits the quadratic term and the linear term of the indoor fan rotation speed. Therefore, it can also be understood that the first preset relationship is obtained by simplifying the second preset relationship.
  • the updated rotation speed can be calculated according to Formula 2-1.
  • the updated speed can be used as the speed to control the indoor fan at the next moment.
  • the target power is determined by a preset relationship between power and air volume and the air volume corresponding to the air volume command, wherein the preset relationship between power and air volume is a pre-calibrated corresponding relationship between power and air volume. In this way, the target power can be obtained quickly and accurately based on the air volume corresponding to the air volume command and the preset relationship between power and air volume.
  • the power is based on the first power and the first weight corresponding to the lower limit value of the air volume interval, and the second power and the second weight corresponding to the upper limit value of the air volume interval. Obtained, the air volume interval is determined by the air volume corresponding to the air volume command.
  • the air volume interval can be set in advance, for example, it can be set based on the air volume range of the air conditioner.
  • the air volume range of the air conditioner is [Q min , Q max ], where Q max is the maximum air volume during the operation of the air conditioner, and Q min is the minimum air volume during the operation of the air conditioner, then based on the air volume range [ Q min , Q max ] can generate at least three air volume values, and then generate an air volume interval based on at least three air volume values.
  • the air volume interval includes two, respectively: the first air volume interval [Q a , Q b ] and the second air volume range (Q b , Q c ].
  • the air volume range of the air conditioner is [Q min , Q max ], which is a subsection of the entire air volume range that the indoor fan can achieve. Range, the air volume range of the air conditioner is [Q min , Q max ] and can be set to be the same or different for different air conditioners or different use environments of the air conditioners.
  • the air volume interval is stored in the air conditioner in advance.
  • the air volume command is determined based on the air volume corresponding to the air volume command and the boundary value of the pre-stored air volume interval. air volume range.
  • the air volume corresponding to the air volume command is Q *
  • Q a ⁇ Q * ⁇ Q b it can be determined that the air volume interval where the air volume command is located is the first air volume interval [Q a , Q b ]
  • Q b ⁇ Q * ⁇ Q c it can be determined that the air volume interval in which the air volume command is located is the second air volume interval (Q b , Q c ].
  • the second power and the second weight corresponding to the upper limit of the air volume interval to obtain the preset relationship between power and air volume.
  • h is the second weight
  • Q * is the air volume corresponding to the air volume command
  • Q1 is the lower limit of the air volume interval
  • Q2 is the upper limit of the air volume interval.
  • the first weight and the second weight The sum is 1.
  • the first power and the first weight corresponding to the lower limit of the air volume interval and the second power and the second weight corresponding to the upper limit of the air volume interval are summed.
  • Obtain the preset relationship between power and air volume. This preset relationship is essentially the relationship between power and rotational speed, but it is related to the air volume. Therefore, it is also called the preset relationship between power and air volume, that is: p * (1-h) ⁇ p1+h ⁇ p2 (4)
  • p * is the target power
  • p1 is the first power
  • p2 is the second power
  • h is the second weight
  • (1-h) is the first weight
  • the first power and the second power are obtained according to a preset relationship between power and rotational speed and the current rotational speed. In this way, the first power and the second power can be obtained quickly.
  • the lower limit value and upper limit value of each air volume interval correspond to a preset relationship between power and rotation speed.
  • the lower limit value of the first air volume interval [Q a , Q b ] is Q a and the upper limit value is Q b
  • the lower limit value Q a and the upper limit value Q b respectively correspond to a power and The preset relationship of the rotational speed
  • the lower limit value of the second air volume interval (Q b , Q c ] is Q b and the upper limit value is Q c
  • the lower limit value Q b and the upper limit value Q c correspond to a power and rotation speed respectively.
  • the preset relationship of the first air volume interval [Q a , Q b ] and the lower limit value Q b of the second air volume interval (Q b , Q c ] correspond to the same preset value of power and speed . Assume relationship.
  • the first power can be calculated according to the current rotational speed and the preset relationship between the power and rotational speed corresponding to the lower limit value, and the third power can be obtained according to the current rotational speed and the preset relationship between power and rotational speed corresponding to the upper limit value. Two power.
  • the constant k4 can be calculated by substituting the current power and the current rotational speed into the above formula (2).
  • the first power p1 corresponding to the lower limit value and the second power p2 corresponding to the upper limit value into the above formula (4).
  • the updated speed can be obtained, that is, the given speed at the next moment.
  • the updated speed can be determined based on the intersection of the two curves.
  • n next that is, the rotation speed at the intersection is the updated rotation speed n next .
  • power in the preset relationship between power and rotational speed, is related to a constant group and rotational speed.
  • the constant group is pre-stored in the air conditioner.
  • the constant group includes at least one constant, and each air volume corresponds to a constant group. In this way, the preset relationship between power and speed can be quickly obtained without occupying computing resources.
  • the preset relationship between power and rotational speed corresponding to the upper limit and lower limit of the air volume interval can be obtained through experimental testing in advance. Still taking the above example as an example, you can first set the air volume to Q a , test the data of indoor fan power p changing with the indoor fan speed n, and then perform curve fitting according to the above formula (1) to obtain ka, The values of kb and kc; using the same method, the values of ka, kb and kc can be obtained respectively when the air volume is Q b and Q c .
  • the values of ka, kb and kc can be formed into a constant group and stored in advance, that is, in In this embodiment, the constant group includes three constants.
  • the constant group may also include one constant, two constants, or more than three constants, which are not specifically limited here.
  • the lower limit value and upper limit value of each air volume interval and the corresponding constants in the preset relationship between power and speed are stored in the air conditioner in advance as a constant group, so that during the operation of the air conditioner, , after determining the air volume interval where the air volume command is located, the corresponding constant group is directly called based on the lower limit and upper limit of the air volume interval. Based on the constants in the constant group, the corresponding preset relationship between power and speed can be obtained. This can effectively save the computing power resources and computing time of the system processor.
  • the current power is equal to the target power. In this way, when the current power is equal to the target power, it can be considered that the air volume output by the indoor fan matches the air volume command. It should be noted that the equal between the current power and the target power may be completely equal, or the difference between the two may be within a set range.
  • the target power and update under the air volume Q * corresponding to the air volume command are calculated by formula (6)
  • the indoor fan is controlled according to the updated speed n next until the difference between the current machine power p and the target power p * corresponding to the air volume Q * corresponding to the air volume command is close to zero or equal to zero. That is to say, after the air volume Q * corresponding to the air volume command is determined, the corresponding relationship between the target power and the updated speed is determined. By adjusting the indoor fan speed, the corresponding relationship between the current power and the current speed gradually approaches the air volume Q * corresponding to the air volume command.
  • the corresponding relationship between the target power and the updated speed under that is, the curve corresponding to p * in Figure 3 is close to or coincident with the curve corresponding to p, This achieves rapid adjustment of the indoor fan air volume and effectively shortens the adjustment time of the air conditioner's constant air volume control process. In this way, even if the air volume decreases due to an increase in static pressure, the indoor fan air volume can quickly reach the air volume command through the air volume command, ensuring The heat exchange effect is good, and the method is simple and reliable without increasing hardware costs.
  • the air conditioner Store the constants ka, kb, kc and air volume values in Table 2 into the air conditioner accordingly.
  • the air volume corresponding to the determined air volume command is 420, which is in the second air volume interval (330, 450].
  • the constants ka, kb and kc corresponding to the lower limit value 330 are 72.7, 2.1 and 0.464
  • the constants ka, kb and kc corresponding to the upper limit value of 450 are 144.2, -3.46 and 0.746.
  • Correspondence p * 126.2 ⁇ n-2.07 ⁇ n ⁇ 2+0.6755 ⁇ n ⁇ 3.
  • the updated rotation speed n next is calculated.
  • the current indoor fan speed can be adjusted (it may not need to be repeated), and the current indoor fan power can be adjusted until the air volume output by the current indoor fan matches the air volume 420 corresponding to the air volume command.
  • the speed adjustment of constant air volume control can be completed by iterating a small number of times, thereby achieving rapid adjustment of air volume. .
  • the updated rotation speed can be calculated using the preset relationship between the rotation speed and the power and the current rotation speed, and then the indoor air volume can be adjusted.
  • the fan is controlled to obtain an air volume that matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide an air conditioner, including a memory, a processor, and a constant air volume control method for the air conditioner stored in the memory and operable on the processor. program, When the processor executes the constant air volume control program of the air conditioner, the above implemented constant air volume control method of the air conditioner is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed, and then the updated rotation speed can be calculated.
  • the indoor fan is controlled to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide a computer-readable storage medium on which a constant air volume control program of the air conditioner is stored.
  • the constant air volume control program of the air conditioner is When executed by the processor, the constant air volume control method of the air conditioner of the above embodiment is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed. , and then control the indoor fan to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide a constant air volume control device for an air conditioner.
  • FIG. 4 is a schematic structural diagram of a constant air volume control device of an air conditioner according to some embodiments of the present disclosure.
  • the constant air volume control device 200 of the air conditioner includes: an acquisition unit 210 and a control unit 220, wherein:
  • the acquisition unit 210 is used to acquire the current rotation speed and current power of the indoor fan according to the air volume instruction;
  • the control unit 220 is used to obtain an updated rotational speed, and use the updated rotational speed to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the updated rotational speed is between the current power and the target power. If they are equal, it is calculated using the preset relationship between rotational speed and power and the current rotational speed, and the target power is determined by the air volume command.
  • the acquisition unit 210 may include relevant sensors to detect the real-time voltage, current and current rotation speed of the indoor fan, and calculate the current power using the real-time voltage and current of the indoor fan.
  • the acquisition unit 210 may also include a processor and a memory, and the processor executes the memory to store corresponding programs to implement the functions of the acquisition unit 210 .
  • control unit 220 may include a processor and a memory, and the processor executes the memory to store corresponding programs to implement the functions of the control unit 220 .
  • processor of the acquisition unit 210 and the processor of the control unit 220 may be the same processor or different processors, and the memory of the acquisition unit 210 and the memory of the control unit 220 may be the same memory or different processors.
  • the memory is not specifically limited here.
  • the acquisition unit 210 is configured to: control the operation of the indoor fan at a preset speed according to the air volume instruction; and detect the current speed and current power of the indoor fan after the indoor fan runs at the preset speed for a preset time.
  • the preset rotation speed is the minimum rotation speed of the indoor fan.
  • the preset relationship between rotational speed and power includes a first preset relationship and a second preset relationship.
  • the first preset relationship includes a corresponding relationship between current power and current rotational speed
  • the second preset relationship includes a corresponding relationship between target power and current rotational speed. Update the corresponding relationship of rotation speed.
  • the first preset relationship is a cubic relationship between power and rotational speed.
  • the target power is determined by a preset relationship between power and air volume and an air volume corresponding to the air volume command, wherein the preset relationship between power and air volume is a pre-calibrated corresponding relationship between power and air volume.
  • the power is based on the first power and the first weight corresponding to the lower limit of the air volume interval, and the second power and the second weight corresponding to the upper limit of the air volume interval. Obtained, the air volume interval is determined by the air volume corresponding to the air volume command.
  • the first power and the second power are obtained according to a preset relationship between power and rotational speed and the current rotational speed.
  • power in the preset relationship between power and rotation speed, is related to a constant group and rotation speed.
  • the constant group is pre-stored in the air conditioner.
  • the constant group includes at least one constant, and each air volume corresponds to a constant group.
  • the current power is equal to the target power
  • the updated rotation speed can be obtained by calculating the preset relationship between the rotation speed and the power and the current rotation speed, and then controlling the indoor fan to obtain The air volume matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • a "computer-readable medium” may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
  • Non-exhaustive list of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the paper or other medium may be scanned, for example, by optical scanning.
  • the program may be obtained electronically by editing, interpreting, or processing in other suitable ways if necessary, and then storing it in computer memory.
  • various parts of the present disclosure may be implemented in hardware, software, firmware, or combinations thereof.
  • various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal.
  • Discrete logic circuits application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.
  • first and second used in the embodiments of the present disclosure are only used for descriptive purposes and may not be understood to indicate or imply relative importance, or to implicitly indicate what is indicated in this embodiment. number of technical features. Therefore, features defined by terms such as “first” and “second” in the embodiments of the present disclosure may explicitly or implicitly indicate that the embodiment includes at least one of the features.
  • the word "plurality” means at least two or two and more, such as two, three, four, etc., unless otherwise clearly and specifically limited in the embodiment.
  • connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.
  • connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.

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Abstract

一种空调器及其恒风量控制方法、装置、存储介质，涉及空调控制技术领域。其中，方法包括：根据风量指令获取室内风机的当前转速和当前功率(S11)；获取更新转速，更新转速是在当前功率与目标功率相等的情况下利用转速与功率的预设关系和当前转速计算所得，目标功率由风量指令确定(S13)；利用更新转速控制室内风机运行以使得室内风机输出的风量与风量指令相匹配(S15)。

Description

空调器及其恒风量控制方法、装置、存储介质
相关申请的交叉引用
本申请要求于2022年07月30日提交的申请号为202210911338.7，名称为“风管式空调器及其恒风量控制方法、装置、存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及空调控制技术领域，尤其涉及一种空调器及其恒风量控制方法、装置、存储介质。
背景技术
空调器是现代家庭常用的制冷设备，经常处于长时间工作状态，热交换器会因长时间的工作而积累很多灰尘，从而导致静压增加，输出的风量减小，制冷效果变差。而且，安装出风口的风管长短、高度不一致，也会导致静压增加，风量减小，导致热交换器无法充分热交换，降低能效比，减弱制冷效果。
公开内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的第一个目的在于提出一种空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
本公开的第二个目的在于提出一种空调器。
本公开的第三个目的在于提出一种计算机可读存储介质。
本公开的第四个目的在于提出一种空调器的恒风量控制装置。
为达上述目的，本公开第一方面实施例提出了一种空调器的恒风量控制方法，包括：根据风量指令获取室内风机的当前转速和当前功率；获取更新转速，更新转速是在当前功率与目标功率相等的情况下利用转速与功率的预设关系和当前转速计算所得，目标功率由风量指令确定；利用更新转速控制室内风机运行以使得室内风机输出的风量与风量指令相匹配。
根据本公开实施例的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制 而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
为达上述目的，本公开第二方面实施例提出了一种空调器，包括存储器、处理器及存储在存储器上并可在处理器上运行的空调器的恒风量控制程序，处理器执行空调器的恒风量控制程序时，实现上述任一实施例的空调器的恒风量控制方法。
根据本公开实施例的空调器，采用上述的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
为达上述目的，本公开第三方面实施例提出了一种计算机可读存储介质，其上存储有空调器的恒风量控制程序，该空调器的恒风量控制程序被处理器执行时实现上述实施例的空调器的恒风量控制方法。
根据本公开实施例的计算机可读存储介质，采用上述的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
为达上述目的，本公开第四方面实施例提出了一种空调器的恒风量控制装置，包括：获取单元，用于根据风量指令获取室内风机的当前转速和当前功率；控制单元，用于获取更新转速，利用更新转速控制室内风机运行以使得室内风机输出的风量与风量指令相匹配，更新转速是在当前功率与目标功率相等的情况下利用转速与功率的预设关系和当前转速计算所得，目标功率由风量指令确定。
根据本公开实施例的空调器的恒风量控制装置，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1为根据本公开一些实施例的空调器的恒风量控制方法的流程示意图；
图2为根据本公开一些实施例的当前转速和当前功率的获取流程示意图；
图3为根据本公开一些实施例的更新速度的获取示意图；
图4为根据本公开一些实施例的空调器的恒风量控制装置的结构示意图。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
图1为根据本公开一些实施例的空调器的恒风量控制方法的流程示意图。参考图1所示，该空调器的恒风量控制方法可以包括：
S11，根据风量指令获取室内风机的当前转速和当前功率。
S13，获取更新转速，更新转速是在当前功率与目标功率相等的情况下利用转速与功率的预设关系和当前转速计算所得，目标功率由风量指令确定。
S15，利用更新转速控制室内风机运行以使得室内风机输出的风量与风量指令相匹配。
上述恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
具体地，空调器可为风管式空调器等，风管式空调器可以是配置鼠笼式风轮的风管机，或者其他类型的风管机。风管机可以是嵌入式风管机。风管机可以包括本体和设置在本体内的室内换热器和室内风机。室内风机包括电机和风轮，电机用于带风轮转动。本体设有出风口和回风口。其中，当室内换热器因长时间的工作而积累很多灰尘，或者因安装出风口的风管长短、高度不一致等，导致静压增加时，室内风机输出的风量将减小，进而导致换热效果变差。
因此，在静压发生变化时，可以给定一个风量指令，并基于该风量指令对室内风机进行控制，具体可以是基于风量指令获取室内风机的当前转速和当前功率，并确定目标功率，而后在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而根据更新转速对室内风机进行控制，使得室内风机输出的风量与风量指令相匹配，这样即使静压变化，也能够维持室内风机输出的风量。本实施方式的恒风量控制方法，能够在静压发生变化时，基于风量指令维持室内风机的风量，从而保证了换热效果，且方法简单可靠。
在一些实施方式中，如图2所示，根据风量指令获取室内风机的当前转速和当前功率， 包括：
S21，根据风量指令，以预设转速控制室内风机运行。
S22，在室内风机以预设转速运行预设时长后，检测室内风机的当前转速和当前功率。如此，可以简单准确地获得室内风机的当前转速和当前功率。
具体地，预设转速可以预先设定，预设转速可以是在室内风机的转速范围内的一个转速。在接收到风量指令时，获取预设转速，并控制室内风机按照预设转速运行，以及在室内风机按照预设转速运行预设时长后，获取当前转速和当前功率。其中，预设时长可以预先设定，例如，预设时长为2分钟，即室内风机以预设转速运行2分钟，获取当前转速和当前功率。预设时长可大于室内风机启动后转速趋于稳定所需的时长，预设时长的具体数值可以根据实际进行设定，在此不作具体限定。当前转速可基于室内风机的电机位置估算获得，当前功率可基于室内风机的实时电压和电流估算获得。
在一些实施方式中，预设转速为室内风机的最小转速。由于转速与风量正相关，因而可以从最小转速逐步调整室内风机的转速，也即从最低风量逐步调整室内风机输出的风量，以便能够获得与风量指令相匹配的风量。
在一些实施方式中，转速与功率的预设关系包括第一预设关系和第二预设关系，第一预设关系包括当前功率和当前转速的对应关系，第二预设关系包括目标功率与更新转速的对应关系。如此，基于不同的转速与功率的预设关系，能够在目标功率与当前功率相等的情况下，基于当前转速计算得到更新转速。
在一些实施方式中，第一预设关系为功率和转速的三次方关系，如此不仅能够准确体现出转速与功率之间的关系，而且可以减少更新速度的计算量。
具体地，基于对室内风机功率和室内风机转速进行分析，可将转速与功率的预设关系通过三次多项式进行表达：
p＝ka×n+kb×n^2+kc×n^3      (1)
其中，p为室内风机功率，n为室内风机转速，ka、kb和kc为常数，常数ka、kb和kc可基于试验数据通过曲线拟合方式获得。
或者，将室内风机功率近似为室内风机转速的三次方：
p＝k4×n^3      (2)
其中，p为室内风机功率，n为室内风机转速，k4为常数。
在实际应用中，由于公式(2)对应一个常数，因此可以基于一组功率和转速计算得到，因此可将公式(2)对应的转速与功率的关系作为第一预设关系，也即当前功率和当前转速的对应关系，在获得当前转速和当前功率后，可由第一预设关系计算得到常数k4；由于公式(1)包含多个常数，因而可将公式(1)对应的转速与功率的关系作为第二预设关系， 也即目标功率与更新转速的对应关系，其中常数可预先通过实验测试获得。从公式(2)可以看出，第一预设关系省去了室内风机转速的二次项和一次项，因此也可以理解为第一预设关系是对第二预设关系进行简化得到的。
在当前功率与目标功率相等的情况下，也即是，使k4×n^3＝ka×n+kb×n^2+kc×n^3(2-1)，由于k4可以由当前功率和当前转速确定，而ka、kb和kc是常数，因此，可以根据公式2-1计算得到更新转速。更新转速可以作为下一时刻对室内风机进行控制的转速。
在一些实施方式中，目标功率是由功率与风量的预设关系和风量指令对应的风量所确定的，其中，功率与风量的预设关系是预先标定的功率与风量的对应关系。如此，基于风量指令对应的风量以及功率与风量的预设关系即可快速准确地获得目标功率。
在一些实施方式中，在功率与风量的预设关系中，功率是根据风量区间的下限值对应的第一功率和第一权重、风量区间的上限值对应的第二功率和第二权重获取，风量区间由风量指令对应的风量决定。
具体地，风量区间可预先设置，例如可基于空调器的风量范围进行设置。举例来说，假设空调器的风量范围为[Qmin,Qmax]，其中，Qmax为空调器运行过程中的最大风量，Qmin为空调器运行过程中的最小风量，那么基于风量范围[Qmin,Qmax]可生成至少三个风量值，进而根据至少三个风量值生成风量区间。假设生成三个风量值，分别为Qa、Qb和Qc，且Qa<Qmin<Qb<Qmax<Qc，那么风量区间包括两个，分别为：第一风量区间[Qa,Qb]和第二风量区间(Qb,Qc]。需要说明的是，空调器的风量范围为[Qmin,Qmax]，是室内风机所能达到的整个风量范围的一个子范围，空调器的风量范围为[Qmin,Qmax]可以针对不同空调器，或空调器不同的使用环境而设置成相同或不同。
在实际应用时，预先将风量区间存储在空调器中，在空调器运行过程中，在获得室内风机的风量指令后，基于风量指令对应的风量以及预先存储的风量区间的边界值确定风量指令所处的风量区间。仍以上述示例为例，假设风量指令对应的风量为Q*，那么若Qa≤Q*≤Qb，则可以确定风量指令所处风量区间为第一风量区间[Qa,Qb]；若Qb<Q*≤Qc，则可以确定风量指令所处风量区间为第二风量区间(Qb,Qc]。进而，根据风量区间的下限值对应的第一功率和第一权重、风量区间的上限值对应的第二功率和第二权重，获得功率与风量的预设关系。
作为一种示例，第二权重根据风量指令对应的风量与风量区间的下限值的差值与风量区间的上限值与风量区间的下限值的差值的比值确定，即：
h＝(Q*-Q1)/(Q2-Q1)         (3)
其中，h为第二权重，Q*为风量指令对应的风量，Q1为风量区间的下限值，Q2为风量区间的上限值。对应前述示例，当为第一风量区间[Qa,Qb]时，下限值Q1为Qa，上限值Q2为Qb；当为第二风量区间(Qb,Qc]时，下限值Q1为Qb，上限值Q2为Qc。第一权重和第二权重的 和为1。
在第一权重和第二权重确定后，将风量区间的下限值对应的第一功率和第一权重，与风量区间的上限值对应的第二功率和第二权重，进行求和，可以获得功率与风量的预设关系，该预设关系实质为功率与转速的关系，但与风量相关，因此也称为功率与风量的预设关系，即：
p*＝(1-h)×p1+h×p2       (4)
其中，p*为目标功率，p1第一功率，p2为第二功率，h为第二权重，(1-h)为第一权重。
在一些实施方式中，第一功率和第二功率是根据功率与转速的预设关系和当前转速获取。如此，可以快速得到第一功率和第二功率。
需要说明的是，每个风量区间的下限值和上限值分别对应一个功率与转速的预设关系。例如，在前述示例中，第一风量区间[Qa,Qb]的下限值为Qa、上限值为Qb，那么下限值Qa和上限值Qb分别对应一个功率与转速的预设关系；第二风量区间(Qb,Qc]的下限值为Qb、上限值为Qc，那么下限值Qb和上限值Qc分别对应一个功率与转速的预设关系，其中，第一风量区间[Qa,Qb]的上限值Qb和第二风量区间(Qb,Qc]的下限值Qb对应同一个功率与转速的预设关系。
在获得当前转速后，根据当前转速以及下限值对应的功率与转速的预设关系即可计算得到第一功率，根据当前转速以及上限值对应的功率与转速的预设关系即可得到第二功率。
在一些示例中，在获得当前功率和当前转速后，将当前功率和当前转速代入上述公式(2)即可计算得到常数k4。另外，通过将下限值对应的第一功率p1和上限值对应的第二功率p2代入上述公式(4)可得：
p*＝(1-h)×p1+h×p2
＝(1-h)×(k1×n+k2×n^2+k3×n^3)+h×(k1’×n+k2’×n^2+k3’×n^3)
＝[(1-h)×k1+h×k1’]×n+[(1-h)×k2+h×k2’]×n^2+[(1-h)×k3+h×k3’]×n^3
(5)
令，k1”＝(1-h)×k1+h×k1’，k2”＝(1-h)×k2+h×k2’，k3”＝(1-h)×k3+h×k3’，对上述公式(5)进行简化可得：
p*＝k1”×n+k2”×n^2+k3”×n^3      (6)
由于上述公式(4)和公式(6)均表示功率与转速的关系，因此可使p＝p*，从而可得到下述公式(7)：
k4×n^3＝k1”×n+k2”×n^2+k3”×n^3     (7)
对上述公式(7)进行简化可得一个二次方程：
k1”+k2”×n+(k3”-k4)×n^2＝0      (8)
通过对公式(8)中的n进行求解即可获得更新转速，也即下一时刻的给定转速。如图3所示，存在两条曲线，一条是当前功率和当前转速的对应关系的曲线，另一条是目标功率与更新转速的对应关系的曲线，基于两条曲线的交点即可确定出更新转速nnext，即，交点处的转速即为更新转速nnext。
在一些实施方式中，在功率与转速的预设关系中，功率与常数组和转速相关，常数组预先存储在空调器，常数组包括至少一个常数，每个风量对应一个常数组。如此可以快速获得功率与转速的预设关系，且不会占用计算资源。
具体地，风量区间的上限值和下限值对应的功率与转速的预设关系可预先通过试验测试获得。仍以上述示例为例，可先将风量设置为Qa，测试室内风机功率p随室内风机转速n变化的数据，而后按照上述公式(1)进行曲线拟合，得到风量为Qa时ka、kb和kc的值；利用同样的方式，可分别得到风量为Qb和Qc时ka、kb和kc的值，ka、kb和kc的值可以构成常数组并预先存储，也即是，在该实施例中，常数组包括三个常数。由此，可以得到每个风量区间的下限值和上限值对应的功率与转速的预设关系。可以理解，在其他实施方式中，常数组还可以包括一个常数、两个常数或多于三个的常数，在此不作具体限定。
在实际应用中，预先将每个风量区间的下限值和上限值以及相应的功率与转速的预设关系中的常数作为常数组，对应存储在空调器中，以便在空调器运行过程中，在确定了风量指令所处的风量区间后，基于风量区间的下限值和上限值直接调用相应的常数组，基于常数组中的常数即可得到对应的功率与转速的预设关系，从而能够有效节省系统处理器的算力资源和计算时间。
在一些实施方式中，在室内风机输出的风量与风量指令相匹配的情况下，当前功率等于目标功率。如此在当前功率等于目标功率时，即可认为室内风机输出的风量与风量指令相匹配。需要说明的是，当前功率等于目标功率中的等于可以是完全相等，也可以是两者的差值在设定范围内。
在一些示例中，当风量指令对应的风量Q*所处风量区间为第一风量区间[Qa,Qb]时，通过公式(6)计算得到风量指令对应的风量Q*下目标功率与更新转速的对应关系p*，进一步地在获得当前转速n当前和当前功率P当前后，将其带入到公式(2)可得常数k4，进而得到当前功率和当前转速的对应关系p，而后使得p＝p*，并对公式中的转速进行求解，得到更新转速。
进一步的，在获得更新转速nnext后，根据更新转速nnext对室内风机进行控制，直至当前机功率p当前与风量指令对应的风量Q*对应的目标功率p*之间的差值接近零或等于零。也就是说，在风量指令对应的风量Q*确定后，目标功率与更新转速的对应关系即确定，通过调整室内风机转速，使得当前功率和当前转速的对应关系逐渐逼近风量指令对应的风量Q*下的目标功率与更新转速的对应关系，即图3中p*对应的曲线与p对应的曲线接近或重合， 从而实现了室内风机风量的快速调节，有效缩短了空调器恒风量控制过程的调节时长，这样即使因静压增加导致风量减小，也可以通过风量指令使得室内风机风量快速达到风量指令，保证了换热效果，且方法简单可靠，同时无需增加硬件成本。
在一些示例中，假设基于空调器的风量范围生成三个风量值，分别为220、330和450，那么可得到两个风量区间，分别为：第一风量区间[220,330]和第二风量区间(330,450]。在每个风量值下，测试不同室内风机转速下的室内风机功率，可得到三个风量值对应的测试数据，如表1所示：
表1
通过对表1数据按照上述公式(1)进行曲线拟合，可得到每个风量值对应的转速与功率的预设关系，如表2所示：
表2
将表2中的常数ka、kb和kc以及风量值对应存储至空调器中。在空调器运行过程中，假设确定的风量指令对应的风量为420，该风量处于第二风量区间(330,450]，通过查询可得下限值330对应的常数ka、kb和kc为72.7、2.1和0.464，以及上限值450对应的常数ka、kb和kc为144.2、-3.46和0.746，将常数分别代入上述公式(1)可得下限值330对应的第一功率p1＝72.7×n+2.1×n^2+0.464×n^3，以及上限值450对应的第二功率p2＝144.2×n-3.46×n^2+0.746×n^3；同时，根据下限值330、上限值450以及风量指令对应的风量420，通过上述公式(3)计算得到权重h，然后将权重h、以及p1和p2代入上述公式(4)可得风量指令对应的风量420下目标功率与更新转速的对应关系p*＝126.2×n-2.07×n^2+0.6755×n^3。假设检测的当前转速为n当前、当前功率为p当前，那么将当前转速n当前和当前功率p当前代入上述公式(2)可计算得到常数k4，从而得到第一预设关系p＝k4×n^3，而后，使得p＝p*，可以得到二次方程(0.6755-k4)×n^2-2.07×n+126.2＝0，最后利用求根公式(其中，a＝0.6755-k4，b＝-2.07，c＝126.2)计算得到更新转速nnext。通过重复该过程即可实现对当前室内风机转速的调整(可能无需进行重复)，进而实现对当前室内风机功率的调整，直至当前室内风机输出的风量与风量指令对应的风量420相适配。通过观察调节过程中的数据记录可知，在调节3次后，室内风机风量精度已经达到3％以内，可见，通过迭代少量的次数即可完成恒风量控制的转速调节，从而实现了风量的快速调节。
综上所述，根据本公开实施例的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
对应上述实施例提供的空调器的恒风量控制方法，本公开的实施例还提供一种空调器，包括存储器、处理器及存储在存储器上并可在处理器上运行的空调器的恒风量控制程序， 处理器执行空调器的恒风量控制程序时，实现上述实施的空调器的恒风量控制方法。
根据本公开实施例的空调器，采用上述的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
对应上述实施例提供的空调器的恒风量控制方法，本公开的实施例还提供一种计算机可读存储介质，其上存储有空调器的恒风量控制程序，该空调器的恒风量控制程序被处理器执行时实现上述实施例的空调器的恒风量控制方法。
根据本公开实施例的计算机可读存储介质，采用上述的空调器的恒风量控制方法，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
对应上述实施例提供的空调器的恒风量控制方法，本公开的实施例还提供一种空调器的恒风量控制装置。
图4为根据本公开一些实施例的空调器的恒风量控制装置的结构示意图。如图4所示，该空调器的恒风量控制装置200包括：获取单元210和控制单元220，其中：
获取单元210用于根据风量指令获取室内风机的当前转速和当前功率；
控制单元220用于获取更新转速，利用所述更新转速控制所述室内风机运行以使得所述室内风机输出的风量与所述风量指令相匹配，所述更新转速是在所述当前功率与目标功率相等的情况下利用转速与功率的预设关系和所述当前转速计算所得，所述目标功率由所述风量指令确定。
具体地，在一些实施方式中，获取单元210可以包括相关传感器以检测室内风机的实时电压、电流和当前转速，并利用室内风机的实时电压和电流来计算当前功率。
在一些实施方式中，获取单元210也可包括处理器和存储器，处理器执行存储器存储相应的程序来实现获取单元210的功能。
在一些实施方式中，控制单元220可包括处理器和存储器，处理器执行存储器存储相应的程序来实现控制单元220的功能。
可以理解，上述获取单元210的处理器和控制单元220的处理器可以是同一个处理器，或不同的处理器，上述获取单元210的存储器和控制单元220的存储器可以是同一个存储器，或不同的存储器，在此不作具体限定。
在一些实施例中，获取单元210用于：根据风量指令，以预设转速控制室内风机运行；在室内风机以预设转速运行预设时长后，检测室内风机的当前转速和当前功率。
在一些实施例中，预设转速为室内风机的最小转速。
在一些实施例中，转速与功率的预设关系包括第一预设关系和第二预设关系，第一预设关系包括当前功率和当前转速的对应关系，第二预设关系包括目标功率与更新转速的对应关系。
在一些实施例中，第一预设关系为功率和转速的三次方关系。
在一些实施例中，目标功率是由功率与风量的预设关系和风量指令对应的风量所确定的，其中，功率与风量的预设关系是预先标定的功率与风量的对应关系。
在一些实施例中，在功率与风量的预设关系中，功率是根据风量区间的下限值对应的第一功率和第一权重、风量区间的上限值对应的第二功率和第二权重获取，风量区间由风量指令对应的风量决定。
在一些实施例中，第一功率和第二功率是根据功率与转速的预设关系和当前转速获取。
在一些实施例中，在功率与转速的预设关系中，功率与常数组和转速相关，常数组预先存储在空调器，常数组包括至少一个常数，每个风量对应一个常数组。
在一些实施例中，在室内风机输出的风量与风量指令相匹配的情况下，当前功率等于目标功率。
需要说明的是，关于空调器的恒风量控制装置未披露的细节，请参考空调器的恒风量控制方法所披露的细节，具体这里不再赘述。
根据本公开实施例的空调器的恒风量控制装置，可在当前功率与目标功率相等的情况下，利用转速与功率的预设关系和当前转速计算得到更新转速，进而对室内风机进行控制而获取与风量指令相匹配的风量，这样即使因静压变化，也能够维持室内风机输出的风量，保证了换热效果，且方法简单可靠。
需要说明的是，在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，“计算机可读介质”可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接 着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本公开的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
此外，本公开实施例中所使用的“第一”、“第二”等术语，仅用于描述目的，而不可以理解为指示或者暗示相对重要性，或者隐含指明本实施例中所指示的技术特征数量。由此，本公开实施例中限定有“第一”、“第二”等术语的特征，可以明确或者隐含地表示该实施例中包括至少一个该特征。在本公开的描述中，词语“多个”的含义是至少两个或者两个及以上，例如两个、三个、四个等，除非实施例中另有明确具体的限定。
在本公开中，除非实施例中另有明确的相关规定或者限定，否则实施例中出现的术语“安装”、“相连”、“连接”和“固定”等应做广义理解，例如，连接可以是固定连接，也可以是可拆卸连接，或成一体，可以理解的，也可以是机械连接、电连接等；当然，还可以是直接相连，或者通过中间媒介进行间接连接，或者可以是两个元件内部的连通，或者两个元件的相互作用关系。对于本领域的普通技术人员而言，能够根据具体的实施情况理解上述术语在本公开中的具体含义。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (13)

  1. 一种空调器的恒风量控制方法，包括：
    根据风量指令获取室内风机的当前转速和当前功率；
    获取更新转速，所述更新转速是在所述当前功率与目标功率相等的情况下利用转速与功率的预设关系和所述当前转速计算所得，所述目标功率由所述风量指令确定；
    利用所述更新转速控制所述室内风机运行以使得所述室内风机输出的风量与所述风量指令相匹配。
  2. 根据权利要求1所述的方法，其中，所述根据风量指令获取室内风机的当前转速和当前功率，包括：
    根据所述风量指令，以预设转速控制所述室内风机运行；
    在所述室内风机以所述预设转速运行预设时长后，检测所述室内风机的当前转速和当前功率。
  3. 根据权利要求2所述的方法，其中，所述预设转速为所述室内风机的最小转速。
  4. 根据权利要求1所述的方法，其中，所述转速与功率的预设关系包括第一预设关系和第二预设关系，所述第一预设关系包括所述当前功率和所述当前转速的对应关系，所述第二预设关系包括所述目标功率与所述更新转速的对应关系。
  5. 根据权利要求4所述的方法，其中，所述第一预设关系为功率和转速的三次方关系。
  6. 根据权利要求1-5任一项所述的方法，其中，所述目标功率是由功率与风量的预设关系和所述风量指令对应的风量所确定的，其中，所述功率与风量的预设关系是预先标定的功率与风量的对应关系。
  7. 根据权利要求6所述的方法，其中，在所述功率与风量的预设关系中，功率是根据风量区间的下限值对应的第一功率和第一权重、所述风量区间的上限值对应的第二功率和第二权重获取，所述风量区间由所述风量指令对应的风量决定。
  8. 根据权利要求7所述的方法，其中，所述第一功率和所述第二功率是根据功率与转速的预设关系和所述当前转速获取。
  9. 根据权利要求8所述的方法，其中，在所述功率与转速的预设关系中，所述功率与常数组和转速相关，所述常数组预先存储在所述空调器，所述常数组包括至少一个常数，每个风量对应一个常数组。
  10. 根据权利要求1所述的方法，其中，在所述室内风机输出的风量与所述风量指令相匹配的情况下，所述当前功率等于所述目标功率。
  11. 一种空调器，包括存储器、处理器及存储在存储器上并可在处理器上运行的空调器 的恒风量控制程序，所述处理器执行所述空调器的恒风量控制程序时，实现权利要求1-10任一项所述的空调器的恒风量控制方法。
  12. 一种计算机可读存储介质，其上存储有空调器的恒风量控制程序，该空调器的恒风量控制程序被处理器执行时实现权利要求1-10任一项所述的空调器的恒风量控制方法。
  13. 一种空调器的恒风量控制装置，包括：
    获取单元，用于根据风量指令获取室内风机的当前转速和当前功率；
    控制单元，用于获取更新转速，利用所述更新转速控制所述室内风机运行以使得所述室内风机输出的风量与所述风量指令相匹配，所述更新转速是在所述当前功率与目标功率相等的情况下利用转速与功率的预设关系和所述当前转速计算所得，所述目标功率由所述风量指令确定。
PCT/CN2023/097575 2022-07-30 2023-05-31 空调器及其恒风量控制方法、装置、存储介质 WO2024027319A1 (zh)

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CN104729017A (zh) * 2015-03-16 2015-06-24 广东美的暖通设备有限公司 空调器的恒风量控制方法、控制装置
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