WO2017113543A1 - Climatiseur, procédé de commande de volume d'air s'y rapportant et appareil correspondant - Google Patents

Climatiseur, procédé de commande de volume d'air s'y rapportant et appareil correspondant Download PDF

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Publication number
WO2017113543A1
WO2017113543A1 PCT/CN2016/079177 CN2016079177W WO2017113543A1 WO 2017113543 A1 WO2017113543 A1 WO 2017113543A1 CN 2016079177 W CN2016079177 W CN 2016079177W WO 2017113543 A1 WO2017113543 A1 WO 2017113543A1
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WIPO (PCT)
Prior art keywords
air conditioner
speed
air
current
static pressure
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PCT/CN2016/079177
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English (en)
Chinese (zh)
Inventor
钱伟
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美的集团武汉制冷设备有限公司
美的集团股份有限公司
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Publication of WO2017113543A1 publication Critical patent/WO2017113543A1/fr

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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
    • 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
    • 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
    • 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
    • F24F11/62—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to the field of air conditioner technology, and in particular to an air volume control method for an air conditioner, an air volume control device for an air conditioner, and an air conditioner.
  • Duct air conditioners are mainly used in the field of building engineering. Due to the difference in installation environment, the lengths of installed ducts are usually quite different, that is, there are different static pressure requirements. If the static pressure is very different, and the speed of the air supply motor cannot be adjusted accordingly, the air volume of the air outlet will deviate from the design air volume and affect the comfort of the room. In addition, the air duct machine usually has several air outlets. If some of the air outlets are closed, the overall static pressure will change. If the speed of the air supply motor cannot be automatically adjusted according to the load, the air volume of the air outlet will also deviate from the design value. The traditional air duct machine is provided with several static pressure dial codes, which respectively correspond to different speeds.
  • the installer adjusts to the corresponding static pressure dial code according to the length of the air duct. This method is to some extent The effect of different lengths of the air duct is solved, but the control precision is poor, and the adaptive adjustment cannot be performed. Once the static pressure dialing is fixed, the speed of the air supply motor is also fixed, and the partial air outlet is not taken into consideration.
  • the related art proposes to run a preset rotation speed at the initial startup, and then detect relevant electrical parameters to achieve constant air volume control.
  • This method can better achieve constant air volume control, but the air duct type air conditioner
  • the static pressure range is usually very wide. When the static pressure range is wide, a preset speed cannot at all take into account the collection of electrical parameters.
  • the preset speed is too small, the electrical parameter acquisition when the static pressure is low can be satisfied, but when the static pressure is high, the collected electrical parameters may be irregular, and even when the static pressure is particularly large, even the collection is not To the relevant electrical parameters; when the preset speed is too large, the electrical parameter acquisition when the static pressure is high can be satisfied, but when the static pressure is small, the motor overload protection will occur, and the related electrical parameters cannot be tested.
  • the present invention aims to solve at least one of the technical problems existing in the prior art or related art.
  • an object of the present invention is to propose a new air volume control scheme for an air conditioner, which achieves precise control of the constant air volume of the air conditioner over a wider static pressure range, and ensures that the air duct type air conditioner is installed differently.
  • the constant air volume can be automatically maintained, which improves the comfort of the room.
  • Another object of the present invention is to provide an air conditioner.
  • a method for controlling an air volume of an air conditioner comprising: controlling a blower motor of the air conditioner to receive a command to start the air conditioner Setting a speed operation; detecting a current power of the air supply motor, and determining whether a current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the preset rotation speed; determining a current state of the air supply motor When the power is greater than or equal to the predetermined power value corresponding to the preset rotation speed, determining the current actual static pressure of the air conditioner according to the preset rotation speed and the current power; determining the current power of the air supply motor When the predetermined power value corresponding to the preset rotation speed is less than, the rotation speed of the air supply motor is gradually changed until the current power of the air supply motor is greater than or equal to a predetermined schedule corresponding to the current rotation speed of the air supply motor.
  • a power value when the current power of the blower motor is greater than or equal to a predetermined power value corresponding to a current speed of the blower motor, according to the blower motor Determining the current actual static pressure of the air conditioner according to the rotational speed and the current power; determining a target rotational speed corresponding to the current actual static pressure of the air conditioner according to the current actual static pressure of the air conditioner; controlling the air supply motor to The target rotational speed is operated to maintain the airflow amount of the air conditioner within a predetermined range.
  • the air volume control method of the air conditioner since the static pressure is increased, the power of the blower motor is gradually decreased as the rotational speed of the blower motor is fixed, and the static pressure is increased to a certain extent.
  • the change law will be destroyed, and the power collection may be inaccurate and cannot meet the actual requirements. Therefore, when the blower motor runs at the preset speed, if the current power of the blower motor is less than the predetermined power value corresponding to the preset speed, the current power of the blower motor can be changed by changing the speed of the blower motor.
  • the precise control of the constant air volume of the air conditioner is realized in a wider static pressure range, and the air duct type air conditioner can automatically maintain the constant air volume operation when installing the air ducts of different lengths, thereby improving the comfort of the room.
  • the method further includes: pre-storing a plurality of rotational speeds, and a predetermined power value corresponding to each rotational speed; before the step of controlling the air-sending motor of the air conditioner to operate at a preset rotational speed, Selecting any one of the plurality of rotation speeds as the preset rotation speed; and step of gradually changing the rotation speed of the air supply motor, specifically: selecting a corresponding rotation speed among the plurality of rotation speeds to change the The speed of the blower motor.
  • the air supply motor of the air conditioner can be controlled to operate at a pre-stored minimum speed.
  • the method further includes: when the air blower is controlled to operate at the preset speed, if the air conditioner enters a shutdown protection state, selecting the plurality of rotation speeds to be less than any of the The other rotational speed of the rotational speed is taken as the preset rotational speed.
  • the lower speed can be selected as the preset speed to restart the air conditioner until the selected preset speed is selected. It will not cause the air conditioner to stop the protection, and avoid the selection of a large preset speed when the air conditioner is started, which will cause the air conditioner to enter the shutdown protection state and cannot start.
  • the step of determining the current actual static pressure of the air conditioner according to the current rotational speed and the current power of the air supply motor specifically includes: according to the current power of the air supply motor, and corresponding to the The relationship between the power of the current rotational speed and the static pressure is determined, and the current actual static pressure of the air conditioner is determined.
  • the relationship between the power and the static pressure can be determined by: when the blower motor is operated at the current speed, detecting the power of the blower motor under each static pressure condition of the plurality of different static pressures, and then Different static pressures are fitted to the power of the blower motor under each static pressure condition to obtain a relationship between power and static pressure, or directly obtain a corresponding corresponding list.
  • the step of determining a target rotational speed corresponding to the current actual static pressure according to the current actual static pressure of the air conditioner specifically comprising: according to the air conditioner The current actual static pressure, and the relationship between the pre-stored static pressure and the rotational speed, determines the target rotational speed.
  • the relationship between the static pressure and the rotational speed can be determined by adjusting the rotational speed of the air supply motor under each static pressure condition of the plurality of different static pressures to maintain the air volume of the air conditioner under each static pressure condition At a predetermined air volume, the plurality of different static pressures and the rotational speed of the air supply motor adjusted under each static pressure condition are fitted to obtain a relationship between the static pressure and the rotational speed, or a corresponding corresponding list is directly obtained.
  • the step of gradually changing the rotation speed of the blower motor comprises: gradually increasing the rotation speed of the blower motor.
  • an air volume control device for an air conditioner comprising: a first control unit, configured to control a blower motor of the air conditioner when receiving an instruction to start the air conditioner Running at a preset speed; a power detecting unit for detecting the current power of the air blowing motor; and a determining unit, configured to determine whether the current power of the air blowing motor detected by the power detecting unit is greater than or equal to a predetermined power value corresponding to the preset rotation speed; the second control unit is configured to gradually change the current power when the determining unit determines that the current power of the air supply motor is less than a predetermined power value corresponding to the preset rotation speed Describe the rotational speed of the air supply motor until the power detecting unit detects that the current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the current rotational speed of the air supply motor; the first determining unit is configured to When the determining unit determines that the current power of the blower motor is
  • the first control unit is further configured to control the blower motor to operate at the target rotational speed to maintain an airflow amount of the air conditioner within a predetermined range.
  • the air volume control device of the air conditioner when the rotational speed of the air supply motor is fixed, the power of the air supply motor gradually decreases as the static pressure increases, and the static pressure increases to a certain extent.
  • the change law will be destroyed, and the power collection may be inaccurate and cannot meet the actual requirements. Therefore, when the air is supplied
  • the motor runs at the preset speed if the current power of the air supply motor is less than the predetermined power value corresponding to the preset speed, the current speed of the air supply motor can be changed to make the current power of the air supply motor greater than or equal to and sent.
  • the predetermined power value corresponding to the current rotational speed of the wind motor thereby ensuring higher accuracy of the actual static pressure determined according to the current rotational speed of the air supply motor and the current power, and realizing the air conditioner in a wider static pressure range
  • the precise control of the constant air volume ensures that the air duct type air conditioner can automatically maintain constant air volume operation when installing ducts of different lengths, which improves the comfort of the room.
  • the method further includes: a storage unit, configured to pre-store a plurality of rotation speeds, and a predetermined power value corresponding to each rotation speed; the first control unit is further configured to: select the plurality of rotation speeds Any one of the rotation speeds as the preset rotation speed; the operation of the second control unit to gradually change the rotation speed of the air supply motor, specifically comprising: selecting a corresponding rotation speed among the plurality of rotation speeds to change the sending The speed of the wind turbine.
  • the air supply motor of the air conditioner can be controlled to operate at a pre-stored minimum speed.
  • the first control unit is further configured to: when the air blower is controlled to operate at the preset speed, if the air conditioner enters an shutdown protection state, select the plurality of The other rotational speeds of the rotational speed that are less than any of the rotational speeds are used as the preset rotational speeds.
  • the lower speed can be selected as the preset speed to restart the air conditioner until the selected preset speed is selected. It will not cause the air conditioner to stop the protection, and avoid the selection of a large preset speed when the air conditioner is started, which will cause the air conditioner to enter the shutdown protection state and cannot start.
  • the first determining unit is specifically configured to: determine a current state of the air conditioner according to a current power of the air blowing motor, and a relationship between power and static pressure corresponding to the current rotating speed Actual static pressure.
  • the relationship between the power and the static pressure can be determined by: when the blower motor is operated at the current speed, detecting the power of the blower motor under each static pressure condition of the plurality of different static pressures, and then Different static pressure and detection of the power of the air supply motor under each static pressure condition In order to obtain the relationship between power and static pressure, or directly obtain the corresponding corresponding list.
  • the second determining unit is specifically configured to: determine the target rotational speed according to a current actual static pressure of the air conditioner and a relationship between a pre-stored static pressure and a rotational speed.
  • the relationship between the static pressure and the rotational speed can be determined by adjusting the rotational speed of the air supply motor under each static pressure condition of the plurality of different static pressures to maintain the air volume of the air conditioner under each static pressure condition At a predetermined air volume, the plurality of different static pressures and the rotational speed of the air supply motor adjusted under each static pressure condition are fitted to obtain a relationship between the static pressure and the rotational speed, or a corresponding corresponding list is directly obtained.
  • the operation of the second control unit to gradually change the rotation speed of the air supply motor comprises: gradually increasing the rotation speed of the air supply motor.
  • an air conditioner comprising: the air volume control device of the air conditioner according to any of the above embodiments.
  • FIG. 1 is a schematic flow chart showing a method of controlling an air volume of an air conditioner according to an embodiment of the present invention
  • FIG. 2 is a schematic block diagram of an air volume control device of an air conditioner according to an embodiment of the present invention
  • FIG. 3 shows a schematic block diagram of an air volume control system of an air conditioner according to an embodiment of the present invention
  • FIG. 4 is a schematic flow chart showing a method of controlling an air volume of an air conditioner according to another embodiment of the present invention.
  • Fig. 5 is a view showing the relationship between the static pressure of the air conditioner and the power of the blower motor when the rotational speed of the blower motor is R1 according to an embodiment of the present invention.
  • Fig. 1 shows a schematic flow chart of a method of controlling an air volume of an air conditioner according to an embodiment of the present invention.
  • a method for controlling an air volume of an air conditioner includes:
  • Step 102 when receiving an instruction to start the air conditioner, controlling the air supply motor of the air conditioner to operate at a preset speed;
  • Step 104 Detect a current power of the air supply motor, and determine whether a current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the preset rotation speed;
  • Step 106 when it is determined that the current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the preset rotation speed, determining the current actual static state of the air conditioner according to the preset rotation speed and the current power.
  • Step 108 when it is determined that the current power of the air supply motor is less than a predetermined power value corresponding to the preset rotation speed, gradually change the rotation speed of the air supply motor until the current power of the air supply motor is greater than or equal to a predetermined power value corresponding to a current rotational speed of the blower motor;
  • Step 110 when the current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the current rotational speed of the air supply motor, determining the current air conditioner according to the current rotational speed and the current power of the air supply motor. Actual static pressure;
  • Step 112 Determine a target rotational speed corresponding to the current actual static pressure according to the current actual static pressure of the air conditioner
  • Step 114 Control the blower motor to operate at the target speed to maintain the airflow of the air conditioner within a predetermined range.
  • the power of the blower motor gradually decreases as the static pressure increases when the rotational speed of the blower motor is fixed, the power of the blower motor changes with static pressure when the static pressure increases to a certain extent. The law of change will be destroyed, and it may lead to inaccurate power collection and cannot meet the actual requirements. Therefore, when the blower motor runs at the preset speed, if the current power of the blower motor is less than the predetermined power value corresponding to the preset speed, the current power of the blower motor can be changed by changing the speed of the blower motor.
  • the precise control of the constant air volume of the air conditioner in the range ensures that the air duct type air conditioner can automatically maintain the constant air volume when installing the ducts of different lengths, thereby improving the comfort of the room.
  • the method further includes: pre-storing a plurality of rotational speeds, and predetermined power values corresponding to each of the rotational speeds;
  • the method further includes: selecting one of the plurality of rotation speeds as the preset rotation speed;
  • the step of gradually changing the rotation speed of the air supply motor specifically includes: selecting a corresponding rotation speed among the plurality of rotation speeds to change the rotation speed of the air supply motor.
  • the air supply motor of the air conditioner can be controlled to operate at a pre-stored minimum speed.
  • the method further includes: when the air blower is controlled to operate at the preset speed, if the air conditioner enters a shutdown protection state, selecting the plurality of rotation speeds to be less than any of the The other rotational speed of the rotational speed is taken as the preset rotational speed.
  • the lower speed can be selected as the preset speed to restart the air conditioner until the selected preset speed is selected. It will not cause the air conditioner to stop the protection, and avoid the selection of a large preset speed when the air conditioner is started, which will cause the air conditioner to enter the shutdown protection state and cannot start.
  • the step of determining the current actual static pressure of the air conditioner according to the current rotational speed and the current power of the air supply motor specifically includes: according to the current power of the air supply motor, and corresponding to the The relationship between the power of the current rotational speed and the static pressure is determined, and the current actual static pressure of the air conditioner is determined.
  • the relationship between power and static pressure can be determined by: in the air supply motor as described When the current speed is running, the power of the air supply motor under each static pressure condition of a plurality of different static pressures is detected, and then the power of the air supply motor is controlled for a plurality of different static pressures and each static pressure condition detected. In order to obtain the relationship between power and static pressure, or directly obtain the corresponding corresponding list.
  • the step of determining a target rotational speed corresponding to the current actual static pressure according to the current actual static pressure of the air conditioner specifically includes: according to the current actual static pressure of the air conditioner, and The relationship between the pre-stored static pressure and the rotational speed determines the target rotational speed.
  • the relationship between the static pressure and the rotational speed can be determined by adjusting the rotational speed of the air supply motor under each static pressure condition of the plurality of different static pressures to maintain the air volume of the air conditioner under each static pressure condition At a predetermined air volume, the plurality of different static pressures and the rotational speed of the air supply motor adjusted under each static pressure condition are fitted to obtain a relationship between the static pressure and the rotational speed, or a corresponding corresponding list is directly obtained.
  • the step of gradually changing the rotation speed of the blower motor comprises: gradually increasing the rotation speed of the blower motor.
  • Fig. 2 shows a schematic block diagram of an air volume control device of an air conditioner according to an embodiment of the present invention.
  • the air volume control device 200 of the air conditioner includes: a first control unit 202, a power detecting unit 204, a judging unit 206, a second control unit 208, a first determining unit 210, and The second determining unit 212.
  • the first control unit 202 is configured to control the air supply motor of the air conditioner to operate at a preset speed when receiving an instruction to start the air conditioner, and the power detecting unit 204 is configured to detect the current state of the air supply motor a determining unit 206, configured to determine whether the current power of the air blowing motor detected by the power detecting unit 204 is greater than or equal to a predetermined power value corresponding to the preset rotating speed; and the second control unit 208
  • the determining unit 206 determines that the current power of the blower motor is less than a predetermined power value corresponding to the preset speed, gradually changing the rotation speed of the blower motor until the power detecting unit 204 detects The current power of the air supply motor is greater than or equal to a predetermined power value corresponding to the current rotational speed of the air supply motor
  • the first determining unit 210 is configured to determine, at the determining unit 206, the current power of the air supply motor When the predetermined power value corresponding to the preset rotation speed is greater than or equal to,
  • the precise control of the constant air volume of the air conditioner in the range ensures that the air duct type air conditioner can automatically maintain the constant air volume when installing the ducts of different lengths, thereby improving the comfort of the room.
  • the air volume control device 200 of the air conditioner according to the above embodiment of the present invention may further have the following technical features:
  • the method further includes: a storage unit 214, configured to pre-store a plurality of rotation speeds, and a predetermined power value corresponding to each rotation speed; the first control unit 202 is further configured to: select the plurality of Any one of the rotation speeds is used as the preset rotation speed; the second control unit 208 gradually changes the rotation speed of the air supply motor, and specifically includes: selecting a corresponding rotation speed among the plurality of rotation speeds to change The rotation speed of the blower motor.
  • the air supply motor of the air conditioner can be controlled to operate at a pre-stored minimum speed.
  • the first control unit 202 is further configured to: when the air blower is controlled to operate at the preset speed, if the air conditioner enters a shutdown protection state, select the multiple The other rotation speeds of the rotation speeds smaller than the one of the rotation speeds are used as the preset rotation speeds.
  • the lower speed can be selected as the preset speed to restart the air conditioner until the selected preset speed is selected. Will not cause the air conditioner to have shutdown protection, avoiding the air conditioner When the startup starts with a large preset speed, the air conditioner enters the shutdown protection state and cannot be started.
  • the first determining unit 210 is specifically configured to: determine the current state of the air conditioner according to a current power of the air blowing motor, and a relationship between power and static pressure corresponding to the current rotating speed The actual static pressure.
  • the relationship between the power and the static pressure can be determined by: when the blower motor is operated at the current speed, detecting the power of the blower motor under each static pressure condition of the plurality of different static pressures, and then Different static pressures are fitted to the power of the blower motor under each static pressure condition to obtain a relationship between power and static pressure, or directly obtain a corresponding corresponding list.
  • the second determining unit 212 is specifically configured to: determine the target rotational speed according to a current actual static pressure of the air conditioner and a relationship between a pre-stored static pressure and a rotational speed.
  • the relationship between the static pressure and the rotational speed can be determined by adjusting the rotational speed of the air supply motor under each static pressure condition of the plurality of different static pressures to maintain the air volume of the air conditioner under each static pressure condition At a predetermined air volume, the plurality of different static pressures and the rotational speed of the air supply motor adjusted under each static pressure condition are fitted to obtain a relationship between the static pressure and the rotational speed, or a corresponding corresponding list is directly obtained.
  • the second control unit 208 gradually changes the rotation speed of the air supply motor, and specifically includes: gradually increasing the rotation speed of the air supply motor.
  • the present invention also proposes an air conditioner (not shown) including: the air volume control device 200 of the air conditioner as shown in FIG.
  • the object of the present invention is mainly to solve the technical problem that the air duct type air conditioner can not accurately realize the constant air volume output according to the static pressure change, and proposes that the static speed can be realized by setting two or more preset speeds.
  • the technical solution of constant air volume control can also be accurately realized when the pressure range is wider.
  • the technical solutions of the present invention are illustrated by taking two preset rotational speeds as an example in conjunction with FIG. 3 to FIG. 5 :
  • FIG. 3 shows a schematic block diagram of an air volume control system of an air conditioner according to an embodiment of the present invention.
  • an air volume control system 300 of an air conditioner includes a power collection module 302, a storage module 304, and a central processing unit 306.
  • the power collection module 302 is configured to collect power of the air supply motor of the air duct type air conditioner;
  • the storage module 304 implements storage of a power-static pressure curve formula or table corresponding to a preset rotation speed, each preset rotation speed, a comparison power value, a rotational speed-static pressure curve formula or a table; and the central processor 306 implements overall control of the entire system. Calling the formula or table in the storage module 304, comparing and calculating the data, sending the running speed signal to the air supply motor, and the like.
  • Step 402 The air conditioner receives the power-on operation signal.
  • Step 404 The air supply motor of the air conditioner first runs at a preset first preset speed R1.
  • Step 406 Detect the current power P1 of the air supply motor.
  • Step 408 Comparing the current power P1 of the detected air supply motor with the preset comparison power P1' in the storage module 304. If P1 ⁇ P1', step 410 is performed; if P1 ⁇ P1', step 412 is performed. .
  • step 410 the P1 is substituted into the power-static pressure relationship curve formula or table at the first preset speed in the storage module 304 to obtain the current actual static pressure value A of the air conditioner.
  • Step 412 The air supply motor of the air conditioner operates at a preset second preset speed R2.
  • Step 414 Detect the current power P2 of the blower motor, and assume that P2 is greater than the preset comparison power P2' in the storage module 304.
  • Step 416 Substituting P2 into the power-static pressure relationship curve formula or table at the second preset rotation speed in the storage module 304 to obtain the current actual static pressure value A of the air conditioner.
  • Step 418 Substituting the current actual static pressure value A of the air conditioner into the fitted speed-static pressure relationship curve formula or table in the storage module 304 to obtain the motor rotation speed B required to maintain the constant air volume.
  • Step 420 The blower motor runs at the speed B.
  • the air conditioner is a duct type air conditioner, and when the duct type air conditioner receives the start running signal, the air supply motor first runs in the M minute within the first preset speed R1 preset in the storage module 304, and the M is taken.
  • the value ranges from 1 minute to 10 minutes.
  • the value of M is 3 to 5 minutes.
  • the power collection module 302 automatically detects the power consumption P1 of the air supply motor; the central processing unit 306 calls the power consumption P1 and compares it with the preset comparison power P1' in the storage module 304. If P1 ⁇ P1', then The power is substituted into the power-static pressure relationship curve formula or table at the first preset speed in the storage module 304 to obtain the current actual static pressure value; if P1 ⁇ P1', the central processing unit 306 issues an instruction to the air supply motor to operate at a second preset rotational speed R2 preset in the storage module 304.
  • the air supply motor is operated at the R2 speed for N minutes, and the value of N ranges from 1 minute to 10 minutes. Preferably, the value of N is 3 to 5 minutes.
  • the power collection module 302 automatically detects the power consumption P2 of the air supply motor. Since the preset two speed values are used as an example in the embodiment, it is assumed here that the air supply motor runs at the second preset speed R2. The power consumption P2 of the air supply motor is greater than or equal to the preset comparison power P2' in the storage module 304.
  • the central processor 306 calls the power consumption P2 and substitutes P2 into the power-static pressure relationship curve formula or table at the second preset speed in the storage module 304 to obtain the current actual static pressure value.
  • the central processing unit 306 substitutes the static pressure value into the preset speed-static pressure relationship curve formula or table in the storage module 304, and calculates the rotation speed of the air supply motor corresponding to the required constant air volume, and then controls the air supply. The motor runs at this speed.
  • the start-up operation signal is received in step 402 shown in FIG. 4, and is completed by a button on the remote controller, a button on the remote controller or a button on the control panel of the air conditioner.
  • Step 404 is specifically that the central processing unit 306 sends an instruction to the air duct air conditioner air supply motor to operate at a first preset rotation speed R1 preset in the storage module 304.
  • Step 406 is specifically for the power collection module 302 to detect the current power consumption P1 of the air duct of the duct air conditioner.
  • the detection power should be performed after the air supply motor runs for R minutes for R1.
  • the purpose is to ensure that the air supply motor has been running stably.
  • the value of M is from 1 minute to 10 minutes. Preferably, the value of M is 3 to 5 minutes.
  • Step 408 and step 410 are specifically comparing the detected duct air conditioner air supply motor power P1 with a preset comparison power P1′ in the storage module 304. If P1 ⁇ P1′, the power is substituted into the storage module 304.
  • the current power-static relationship curve formula or table at the first preset speed is obtained to obtain the current actual static pressure value; wherein, the comparison power P1' is a value previously stored in the storage module 304, when the air supply motor runs R1
  • the comparison power P1' is a value previously stored in the storage module 304, when the air supply motor runs R1
  • the motor power gradually decreases.
  • the parameter of the comparison power P1' is set to determine whether the preset speed needs to be changed.
  • the power-static pressure relationship curve formula or table at the first preset speed is in the air supply
  • the motor runs the first preset rotation speed R1 preset in the storage module 304
  • it is obtained by fitting or directly listing the corresponding data of several sets of static pressure and power.
  • Step 408 is to call the detection result of the power collection module 302 by the central processing unit 306 and perform power comparison, and simultaneously call the power-static pressure relationship curve formula or table in the storage module 304, and obtain the current actual static pressure by calculation.
  • the current static pressure value is calculated using the power-static pressure correspondence at the first preset rotational speed R1. It can be seen from Table 1 that the current static pressure value is between 10 Pa and 20 Pa.
  • the principle of proximity can be selected, that is, P1 is close to 351 W, and the current static pressure is 20 Pa. Linear interpolation can also be selected between 10 Pa and 20 Pa to obtain the current static pressure.
  • the value is 18.33Pa. More precisely, based on the data in Table 1, by data fitting, the power-static pressure relationship curve at the preset speed R1 is obtained, preferably by least squares fitting, for example, according to the data fitting shown in Table 1.
  • a static pressure value of 5 to 100 equalization or unevenness may be set according to the maximum static pressure and the zero static pressure of the air duct type air conditioner, and obtained by the above experimental method. 5 to 100 sets of power-static pressure correspondence, forming a parameter table similar to Table 1 to obtain the corresponding fitting formula.
  • the step 412 shown in FIG. 4 is specifically that the central processing unit 306 sends an instruction to the air duct air supply motor to operate at a second preset speed R2 preset in the storage module 304, wherein the value of R2 is greater than R1.
  • Step 414 is specifically for the power collection module 302 to detect the current power consumption P2 of the air duct of the duct air conditioner.
  • the detection power is to be performed after the air supply motor is operated for R minutes for R minutes.
  • the purpose is to ensure that the motor has been running stably.
  • the value of N ranges from 1 minute to 10 minutes. Preferably, the value of N is 3 to 5 minutes.
  • Step 416 is specifically: substituting the detected air duct air conditioner power supply motor power P2 into a power-static pressure relationship curve formula or a table at a second preset speed in the storage module 304 to obtain a current actual static pressure value.
  • the detected motor power is 410 W.
  • the current static pressure value is between 120 Pa and 130 Pa.
  • the principle of proximity can be selected, that is, P2 is close to 404 W, and the current static is considered.
  • the pressure is 130PA, and the linear interpolation method can also be selected between 120Pa and 130Pa, and the current static pressure value is 128.5Pa.
  • the power-static pressure relationship curve at the preset rotation speed R2 is obtained, and the least squares method is preferably used for fitting, for example, according to the data fitting in Table 2, the following is obtained.
  • a static pressure value of 5 to 100 equalization or unevenness may be set according to the maximum static pressure and the zero static pressure of the air duct type air conditioner, and obtained by the above experimental method. 5 to 100 sets of power-static pressure correspondence, forming a parameter table similar to Table 2 to obtain the corresponding fitting formula.
  • Step 418 shown in FIG. 4 is specifically to obtain the current actual static pressure value of the obtained air conditioner.
  • the speed-static relationship curve formula or table which is previously fitted in the storage module 304 is calculated, and the rotation speed required to maintain a constant air volume is calculated.
  • the formula of the speed-static pressure relationship curve is obtained by fitting or directly listing the corresponding data of several sets of static pressure and rotational speed on the premise of keeping the air volume as the design air volume.
  • a wind duct type air conditioner indoor unit has a design air volume of 2000 cubic meters per hour. It is found through experiments that the speed corresponding to this air volume is different as shown in Table 3:
  • Static pressure 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Speed (rpm) 840 890 940 990 1040 1080 1130 1170 1210 1250 1290 1330 1370 1410 1440
  • the principle of proximity can be selected, that is, close to 20 Pa, the speed corresponding to 20 Pa is selected to be 940 rpm, or linear interpolation can be selected between 20 Pa and 30 Pa, and it is required to be 950 rpm. run. More precisely, according to the data shown in Table 3, by the data fitting, the formula of the rotational-static relationship curve in the high windshield is obtained, and the least squares method is preferably used for fitting, for example according to the data shown in Table 3. The fit yields the following formula:
  • Step 420 shown in FIG. 4 is specifically for the central processor 306 to send an instruction to cause the ducted air conditioner to operate at the speed calculated in step 418 until a stop signal is received. After executing this command, it is ensured that the air volume of the duct air conditioner under the current static pressure is kept at the design air volume.
  • the rotation speed of the blower motor is adjusted to R2, and at this time, if the power of the blower motor P2 If the comparison power P2' stored in the storage module 304 is smaller than the comparison power P3' stored in the storage module 304, the power supply P3 of the air supply motor is continuously compared with the comparison power P3' corresponding to the rotation speed R3 stored in the storage module 304.
  • the present invention proposes a new air volume control scheme for an air conditioner, which realizes accurate control of the constant air volume of the air conditioner in a wider static pressure range, and ensures the air duct.
  • the air conditioners can automatically maintain constant air volume operation, which improves the comfort of the room.

Abstract

La présente invention concerne un climatiseur, un procédé de commande de volume d'air s'y rapportant et un appareil correspondant, le procédé de commande de volume d'air pour le climatiseur comprenant : la commande d'un moteur d'alimentation en air du climatiseur pour son fonctionnement à une vitesse de rotation prédéfinie ; la détection d'une puissance actuelle du moteur d'alimentation en air, et la détermination si oui ou non la puissance actuelle du moteur d'alimentation en air est supérieure ou égale à une valeur de puissance prédéfinie correspondant à la vitesse de rotation prédéfinie ; s'il est déterminé que la puissance actuelle est inférieure à la valeur de puissance prédéfinie correspondant à la vitesse de rotation prédéfinie, la modification progressive de la vitesse de rotation du moteur d'alimentation en air, jusqu'à ce que la puissance actuelle soit supérieure ou égale à une valeur de puissance prédéfinie correspondant à la vitesse de rotation actuelle ; lorsque la puissance actuelle du moteur d'alimentation en air est supérieure ou égale à la valeur de puissance prédéfinie correspondant à la vitesse de rotation actuelle du moteur d'alimentation en air, la détermination d'une pression statique actuelle réelle du climatiseur, sur la base de la vitesse de rotation et de la puissance actuelles ; sur la base de la pression statique actuelle réelle du climatiseur, la détermination d'une vitesse de rotation cible correspondant à la pression statique actuelle réelle, et la commande du moteur d'alimentation en air pour son fonctionnement à la vitesse de rotation cible, de manière à garantir qu'un volume de sortie d'air du climatiseur soit maintenu dans une plage prédéfinie.
PCT/CN2016/079177 2015-12-31 2016-04-13 Climatiseur, procédé de commande de volume d'air s'y rapportant et appareil correspondant WO2017113543A1 (fr)

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