CN112443888B - Air conditioner and control method and device thereof - Google Patents

Air conditioner and control method and device thereof Download PDF

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Publication number
CN112443888B
CN112443888B CN201910827006.9A CN201910827006A CN112443888B CN 112443888 B CN112443888 B CN 112443888B CN 201910827006 A CN201910827006 A CN 201910827006A CN 112443888 B CN112443888 B CN 112443888B
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China
Prior art keywords
air conditioner
static pressure
pressure value
fan
rotating speed
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CN201910827006.9A
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Chinese (zh)
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CN112443888A (en
Inventor
贺杰
宫笋
田俊
钟志尧
程超
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN201910827006.9A priority Critical patent/CN112443888B/en
Publication of CN112443888A publication Critical patent/CN112443888A/en
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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
    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F11/77—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The application discloses an air conditioner and a control method and a control device thereof, wherein the method comprises the following steps: acquiring a target static pressure value of the air conditioner when a fan runs; acquiring a first static pressure value when the fan operates currently, and receiving the first static pressure value to open or close an air outlet of the air conditioner; and adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value. According to the method, in the running process of the air conditioner, the target static pressure value and the first static pressure value of the air conditioner are utilized to adjust the rotating speed of the fan of the air conditioner so as to adjust the total air output of the air outlet of the air conditioner, so that the unit area air output of the air outlet of the air conditioner is kept unchanged, the user requirement is met, and the user experience is improved.

Description

Air conditioner and control method and device thereof
Technical Field
The application relates to the technical field of household appliances, in particular to an air conditioner and a control method and device thereof.
Background
At present, often be provided with a plurality of air outlets on the air conditioner, if: the air conditioner comprises a top air outlet, a front air outlet and a side air outlet, and a user can selectively open or close at least one air outlet on the air conditioner according to the requirement of the user. However, when the air outlet of the air conditioner is adjusted by a user, the air output of the air conditioner per unit area will change accordingly, so that the air output of the air conditioner cannot meet the requirements of the user, and the user experience is influenced.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first object of the present invention is to provide a method for controlling an air conditioner, which can maintain the air output per unit area of the air conditioner unchanged and improve user experience when adjusting an upper outlet of the air conditioner.
A second object of the present application is to provide a control apparatus of an air conditioner.
A third object of the present application is to provide an air conditioner.
A fourth object of the present application is to provide an electronic device.
A fifth object of the present application is to propose a computer-readable storage medium.
The embodiment of the application provides a control method of an air conditioner, which comprises the following steps:
acquiring a target static pressure value of the air conditioner when a fan runs;
acquiring a first static pressure value when the fan operates currently;
and adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value.
According to an embodiment of the present application, further comprising:
and identifying at least two fans, and respectively adjusting the rotating speed of each fan.
According to an embodiment of the application, the obtaining a first static pressure value when the fan is currently running includes:
recognizing and receiving a control instruction for opening or closing an air outlet of the air conditioner;
and acquiring the static pressure value of the air conditioner after the control command is received, and taking the static pressure value as the first static pressure value.
According to an embodiment of the application, the adjusting the rotation speed of the fan according to the target static pressure value and the first static pressure value includes:
acquiring a first absolute difference value between the target static pressure value and the first static pressure value;
detecting and determining that the first insulation difference value is smaller than or equal to a first preset difference value, and controlling the fan to keep the current rotating speed to operate;
and detecting and determining that the first insulation difference value is greater than the first preset difference value, acquiring a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
According to an embodiment of the present application, after adjusting the current rotational speed of the fan to the first target rotational speed, the method further includes:
acquiring a second static pressure value of the air conditioner when the fan runs at the first target rotating speed;
acquiring a second absolute difference value between the target static pressure value and the second static pressure;
detecting and determining that the second absolute difference is smaller than or equal to a second preset difference, and controlling the fan to keep the first target rotating speed to operate;
and detecting and determining that the second absolute difference is greater than the second preset difference, acquiring a second target rotating speed of the fan, and adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed.
According to an embodiment of the application, the obtaining a first static pressure value of the air conditioner after receiving the control instruction further includes:
acquiring initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at the target static pressure value;
acquiring first input power of the motor after the control instruction is received;
and detecting and determining that the third absolute difference is greater than the third preset difference, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and acquiring the first static pressure value.
According to an embodiment of the application, the method further comprises:
and determining the static pressure value of the air conditioner according to the rotating speed of the fan and the input power of the motor corresponding to the rotating speed of the fan.
According to an embodiment of the present application, further comprising:
determining the current air volume of the air conditioner according to the current static pressure value of the air conditioner;
and determining the target rotating speed of the fan according to the reference air volume of the air conditioner, the current air volume of the air conditioner and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner.
According to an embodiment of the present application, before obtaining the target static pressure value when the air conditioner runs, the method further includes:
and determining the initial rotating speed of the fan and the initial input power of the motor according to the reference air volume of the air conditioner, the air volume of the air conditioner corresponding to the rotating speed of the fan when the fan is started and the rated air volume of the air conditioner.
The present application also provides a control apparatus of an air conditioner, the apparatus including:
the first acquisition module is used for acquiring a target static pressure value when a fan in the air conditioner runs;
a second acquisition module for receiving the opening or closing of an air outlet of the air conditioner and acquiring a first static pressure value when the fan operates currently;
and the control module is used for adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value.
According to an embodiment of the present application, the control module is further configured to:
and identifying at least two fans, and respectively adjusting the rotating speed of each fan.
According to an embodiment of the present application, the second obtaining module is further configured to:
recognizing and receiving a control instruction for opening or closing an air outlet of the air conditioner;
and acquiring the static pressure value of the air conditioner after the control instruction is received, and taking the static pressure value as the first static pressure value.
According to an embodiment of the present application, the control module is further configured to:
acquiring a first absolute difference value between the target static pressure value and the first static pressure value;
detecting and determining that the first insulation difference value is smaller than or equal to a first preset difference value, and controlling the fan to keep the current rotating speed to operate;
and detecting and determining that the first insulation difference value is greater than the first preset difference value, acquiring a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
According to an embodiment of the present application, the control module is further configured to:
acquiring a second static pressure value of the air conditioner when the fan runs at the first target rotating speed;
acquiring a second absolute difference value between the target static pressure value and the second static pressure;
detecting and determining that the second absolute difference is smaller than or equal to a second preset difference, and controlling the fan to keep the first target rotating speed to operate;
and detecting and determining that the second absolute difference is greater than the second preset difference, acquiring a second target rotating speed of the fan, and adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed.
According to an embodiment of the present application, the first obtaining module is further configured to:
acquiring initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at the target static pressure value;
acquiring first input power of the motor after the control instruction is received;
and detecting and determining that the third absolute difference is greater than the third preset difference, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and acquiring the first static pressure value.
According to an embodiment of the present application, further comprising:
and the determining module is used for determining the static pressure value of the air conditioner according to the rotating speed of the fan and the input power of the motor corresponding to the rotating speed of the fan.
According to an embodiment of the present application, the determining module is further configured to:
determining the current air volume of the air conditioner according to the current static pressure value of the air conditioner;
and determining the target rotating speed of the fan according to the reference air volume of the air conditioner, the current air volume of the air conditioner and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner.
According to an embodiment of the application, the determining module is further configured to:
and determining the initial rotating speed of the fan and the initial input power of the motor according to the reference air volume of the air conditioner, the air volume of the air conditioner corresponding to the rotating speed of the fan when the fan is started and the rated air volume of the air conditioner.
An embodiment of a third aspect of the present application provides an air conditioner, including the control device of the air conditioner provided in the embodiment of the second aspect.
A fourth aspect of the present application provides an electronic device, including a memory and a processor; the processor reads the executable program codes stored in the memory to run programs corresponding to the executable program codes, so as to implement the control method of the air conditioner provided by the embodiment of the first aspect.
An embodiment of a fifth aspect of the present application provides a computer-readable storage medium, where a computer program is stored, and when the program is executed by a processor, the control method for an air conditioner provided in the embodiment of the first aspect is provided.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. in the operation process of the air conditioner, the rotating speed of a fan of the air conditioner is adjusted by utilizing the target static pressure value and the first static pressure value of the air conditioner, so that the total air output of an air outlet of the air conditioner is adjusted, the unit area air output of the air outlet of the air conditioner is maintained unchanged, the user requirement is met, and the user experience is improved.
2. And determining whether to acquire the first static pressure value of the air conditioner by using the initial input power of the motor and the first input power of the motor after receiving the control command, so that the control accuracy is improved.
3. The initial speed and initial input power are corrected before the target static pressure value is obtained, providing control accuracy.
Drawings
Fig. 1 is a schematic structural view of an air conditioner according to an embodiment disclosed in the present application;
fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a step of obtaining a first static pressure value according to a control command for an air outlet of an air conditioner in a control method of the air conditioner according to an embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating a step of adjusting a rotation speed of a fan in a control method of an air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a step of determining a target rotation speed of a fan according to an air volume of an air conditioner and a static pressure value of the air conditioner in a control method of the air conditioner according to an embodiment of the disclosure;
fig. 6 is a schematic diagram illustrating a step of adjusting a first target rotation speed of an air conditioner according to a second static pressure value and a target static pressure value of the air conditioner corresponding to the first target rotation speed in a control method of the air conditioner according to an embodiment of the disclosure;
fig. 7 is a schematic diagram illustrating a step of determining whether a first static pressure value needs to be obtained according to a fluctuation of an input power of a motor in a control method of an air conditioner according to an embodiment of the present disclosure;
fig. 8 is a control flow diagram illustrating a control method of an air conditioner according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a control device of an air conditioner according to an embodiment of the present disclosure;
FIG. 10 is a schematic view of an air conditioner according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the present invention and should not be construed as limiting the present application.
An air conditioner and a control method and apparatus thereof according to an embodiment of the present application are described below with reference to the accompanying drawings.
It should be noted that the air conditioner includes at least one of a top outlet, a front outlet, and a side outlet. The air conditioner in this embodiment may include, but is not limited to, a top outlet, a front outlet, and a side outlet.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment disclosed in the present application. As shown in fig. 1, the air conditioner 100 in the present embodiment includes an air conditioner body 11; an air inlet 12 is arranged at the rear side of the air conditioner body 11, and a front air outlet 13 is arranged at the front side; the upper part of the front air outlet 13 is provided with a top air outlet 14; the side of the air conditioner is provided with a side outlet (not shown in the figure). When the air conditioner 100 is started, external air enters the air conditioner 100 from the air inlet 12, and the air conditioner 100 performs cooling or heating treatment on the external air entering the air conditioner 100; further, the air treated by the driving of the fan 15 flows into the room through the front air outlet 13; when the top outlet 14 is open, the treated air will also flow into the room through the top outlet 14.
Fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 2, the method for controlling an air conditioner according to this embodiment includes the following steps:
s101, obtaining a target static pressure value when a fan in the air conditioner operates.
In the present embodiment, the static pressure value of the air conditioner is determined according to the rotation speed of the fan in the air conditioner and the input power of the motor in the air conditioner corresponding to the rotation speed of the fan. Wherein, the calculation formula of the static pressure value is as follows:
SP＝f(n,P)＝K 00 +K 01 *n+K 02 *P+K 03 *n*P+K 04 *P*P
wherein SP is a static pressure value, n is a rotating speed of the fan, P is an input power of a motor in the air conditioner corresponding to the rotating speed of the fan, = K 00 、K 01 、K 02 、K 03 、K 04 Is a constant.
As a possible implementation manner, when the air conditioner receives an instruction to turn on the fan, the target static pressure value may be obtained by controlling the fan to operate at a preset rotation speed for a preset time to stabilize the operation of the motor, obtaining the real-time input power of the motor, and determining the target static pressure value according to the preset rotation speed and the real-time input power of the motor corresponding to the preset rotation speed.
Alternatively, the input current and the input voltage of the motor may be detected using a current detection circuit and a voltage detection circuit, and the real-time input power of the motor may be calculated from the input current and the input voltage.
It should be understood that the target static pressure value may also be calibrated in advance, which may be determined according to actual situations and is not limited herein.
S102, obtaining a first static pressure value when the fan operates currently.
Optionally, during the operation of the air conditioner, when the air outlet is opened or closed, the air pressure of the air conditioner during the operation of the air conditioner will change. Therefore, in the present embodiment, the first static pressure value may be obtained according to a control instruction for the outlet of the air conditioner.
As shown in fig. 3, the method comprises the following steps:
s201, recognizing and receiving a control instruction for opening or closing an air outlet of the air conditioner.
Specifically, the air conditioner may be provided with a button for controlling the opening or closing of the air outlet, for example, a button for controlling the opening or closing of the top outlet, and a user may open or close the air outlet by clicking the button on the air conditioner. After a user clicks a button for opening or closing the air outlet, a controller in the air conditioner receives a control instruction for opening or closing the air outlet, so that the fact that the user selects to open or close the air outlet is recognized, and the air outlet is controlled to be opened or closed.
Optionally, the user may also issue a control instruction for opening or closing the air outlet to the air conditioner through a remote controller of the air conditioner or an application program on the terminal device, so that the controller in the air conditioner receives the control instruction issued by the user.
S202, acquiring the static pressure value of the air conditioner after the control command is received, and taking the static pressure value as a first static pressure value.
Specifically, after the controller in the air conditioner receives the control instruction, the controller controls the air outlet of the air conditioner. When the static pressure value of the air conditioner at this time is obtained, the static pressure value may be determined by using the current rotation speed of the fan and the real-time input power of the motor corresponding to the current rotation speed, which is described in step S101 and is not described herein again. When the static pressure value at this time is determined, it is sufficient to use it as the first static pressure value.
S103, adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value.
Specifically, when the control instruction is an instruction for opening the air outlet, the air outlet area of the air outlet of the air conditioner is increased; at this moment, the rotating speed of the fan is not changed, so that the total air output of the air outlet of the air conditioner is kept unchanged, the unit air output of the air outlet of the air conditioner is reduced, and the static pressure value of the air conditioner is reduced. When the control command is a command for closing the air outlet, the static pressure value of the air conditioner is increased.
In this embodiment, the rotating speed of the fan can be adjusted according to the target static pressure value and the first static pressure value, so as to adjust the total air output of the air outlet of the air conditioner, further maintain the unit area air output of the air outlet of the air conditioner unchanged, avoid causing discomfort of a user, and improve user experience.
As a possible implementation manner, as shown in fig. 4, adjusting the rotation speed of the fan includes the following steps:
s301, acquiring a first absolute difference value between the target static pressure value and the first static pressure value.
S302, judging the magnitude of the first absolute difference value and the first preset difference value.
Specifically, after the first absolute difference value is obtained, the first absolute difference value is compared with a first preset difference value. Wherein, the first preset difference is a preset value. When the first absolute difference is smaller than or equal to the first preset difference, it indicates that after the controller executes the control command, the fluctuation of the static pressure value in the air conditioner is small, and therefore, the fluctuation of the unit air output of the air outlet of the air conditioner is also small, and at this time, the user does not feel uncomfortable, so that step S303 may be executed. When the first absolute difference is greater than the first preset difference, it indicates that after the controller executes the control command, the fluctuation of the static pressure value in the air conditioner is large, and therefore, the fluctuation of the unit air output of the air outlet of the air conditioner is also large, which will cause discomfort to the user, so step S304 may be executed.
And S303, controlling the fan to keep the current rotating speed to operate.
Specifically, the first absolute difference is smaller than or equal to the first preset difference, and the static pressure value fluctuation of the air conditioner is smaller at the moment, so that the fan can be controlled to keep the current rotating speed to operate.
S304, obtaining a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
Specifically, the first absolute difference is greater than the first preset difference, which indicates that the static pressure value of the air conditioner fluctuates greatly, so that the user is likely to feel uncomfortable, and at this time, the rotation speed of the fan needs to be adjusted. Therefore, the first target rotating speed of the fan needs to be acquired, the current rotating speed of the fan is adjusted to the first target rotating speed, the total air output of the air outlet of the air conditioner is adjusted, the unit area air output of the air outlet of the air conditioner is maintained unchanged, discomfort of a user is avoided, and user experience is improved.
It should be understood that, when the air conditioner includes at least two fans, the rotation speed of each fan may be selected to be adjusted respectively, so that the unit air outlet areas of the air outlets corresponding to each fan are the same or similar.
Alternatively, the target rotation speed of the fan may be determined according to the air volume of the air conditioner and the static pressure value of the air conditioner, as shown in fig. 5, including the following steps:
s401, determining the current air volume of the air conditioner according to the current static pressure value of the air conditioner.
Specifically, the current air volume of the air conditioner may be determined according to the current static pressure value of the air conditioner. The air volume of the air conditioner can be determined by the following formula, but not limited to, and the calculation formula is as follows:
Q＝f(n,SP)＝K 10 +K 11 *n+K 12 *SP+K 13 *n*SP+K 14 *SP*SP
wherein Q is the air volume, n is the rotating speed of the fan, SP is the static pressure value of the air conditioner corresponding to the rotating speed of the fan, K 10 、K 11 、K 12 、K 13 、K 14 Is a constant.
It should be understood that the rotation speed of the fan in the above formula refers to the current rotation speed of the fan, and the air volume is the current air volume of the air conditioner.
S402, determining the target rotating speed of the fan according to the reference air volume of the air conditioner, the current air volume of the air conditioner and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner.
Specifically, in this embodiment, when determining the target rotation speed of the fan, the reference air volume of the air conditioner, the current air volume of the air conditioner, and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner need to be combined. The calculation formula of the target rotating speed is as follows:
nt＝f(Q 0 ,Q,SP)＝(Q-Q 0 -K 21 *SP-K 22 *SP*SP)/K 23 /SP
wherein nt is the target rotation speed, Q 0 For reference air volume, Q is current air volume, SP is static pressure value corresponding to current air volume, K 21 、K 22 、K 23 Is a constant.
Further, in this embodiment, the reference air volume of the air conditioner refers to the air volume of the air conditioner when the static pressure value is zero and the rotation speed of the fan is the preset rotation speed, that is, Q 0 ＝f(nn,0)＝＝K 10 +K 11 * nn, wherein Q 0 For reference air volume nn is a preset rotation speed.
In some embodiments, after the current rotation speed of the fan is adjusted to the first target rotation speed, in order to further reduce the fluctuation of the unit air output of the air conditioner, the first target rotation speed of the air conditioner may be adjusted according to the second static pressure value and the target static pressure value of the air conditioner corresponding to the first target rotation speed. Specifically, as shown in fig. 6, the method includes the following steps:
s501, acquiring a second static pressure value of the air conditioner when the fan runs at the first target rotating speed.
Specifically, the second static pressure value may be obtained by the static pressure value calculation formula of the air conditioner in step S101, which is not described herein again.
And S502, acquiring a second absolute difference value between the target static pressure value and the second static pressure.
And S503, judging the magnitude of the second absolute difference and the second preset difference.
Specifically, after the second absolute difference is obtained, the second absolute difference is compared with a second preset difference. Wherein, the second preset difference is also a preset value. When the second absolute difference is smaller than or equal to the second preset difference, it indicates that the fluctuation of the static pressure value in the air conditioner is small, and therefore, the fluctuation of the unit air output of the air outlet of the air conditioner is also small, and at this time, the user does not feel uncomfortable, so step S504 may be performed. When the second absolute difference is greater than the second preset difference, it indicates that the fluctuation of the static pressure value in the air conditioner is large, and therefore, the fluctuation of the unit air output of the air outlet of the air conditioner is also large, which will cause discomfort to the user, so step S505 may be executed.
Optionally, in order to make the static pressure values of the air conditioner before and after controlling the top air outlet to be opened and closed close, so as to maintain the air output per unit area of the air outlet of the air conditioner unchanged, in this embodiment, the second preset difference may be controlled to be smaller than the first preset difference.
And S504, controlling the fan to keep the first target rotating speed to operate.
Specifically, the second absolute difference is smaller than or equal to the second preset difference, and the static pressure value fluctuation of the air conditioner is smaller, so that the fan can be controlled to operate at the first target rotating speed.
And S505, acquiring a second target rotating speed of the fan, and adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed.
Specifically, the second absolute difference is greater than the second preset difference, which indicates that the static pressure value of the air conditioner fluctuates greatly, which easily causes discomfort of a user, and at this time, the rotation speed of the fan needs to be adjusted. Therefore, the second target rotating speed of the fan needs to be acquired, the first target rotating speed of the fan is adjusted to the second target rotating speed, the total air output of the air outlet of the air conditioner is adjusted, the unit area air output of the air outlet of the air conditioner is maintained unchanged, discomfort of a user is avoided, and user experience is improved.
It should be noted that the second target rotation speed may be obtained by referring to the method of obtaining the target rotation speed in step S402, where nt is the second target rotation speed, Q 0 For reference air volume, Q is air volume at a first target rotation speed, SP is static pressure value at the first target rotation speed, K 21 、K 22 、K 23 Is constant, Q is 0 For reference, Q is the air volume at the first target rotation speed, and SP is the static pressure value corresponding to the first target rotation speed, and the static pressure value is input into the formula for obtaining the target rotation speed in step S402, so as to obtain the second target rotation speed.
In some embodiments, in the operation process of a motor in the air conditioner, the input power of the motor fluctuates, and when the fluctuation range is in a preset range, the change of the air output of the air outlet of the air conditioner in unit area is small, so that the discomfort of a user cannot be caused; when the fluctuation range exceeds the preset range, the air output of the air outlet of the air conditioner per unit area changes greatly, and the user can feel uncomfortable at the moment. Therefore, before the first static pressure value of the air conditioner after the control instruction is received is obtained, whether the first static pressure value needs to be obtained or not can be determined according to the fluctuation condition of the input power of the motor, and the rotating speed of the fan in the air conditioner can be adjusted. As shown in fig. 7, the method comprises the following steps:
s601, obtaining initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at the target static pressure value.
Specifically, when the target static pressure value is acquired, the input current and the input voltage of the motor may be detected using a current detection circuit and a voltage detection circuit, and the initial input power of the motor may be calculated from the input current and the input voltage.
And S602, acquiring the first input power of the motor after the control instruction is received.
Specifically, when the air conditioner receives an instruction of starting the fan, the fan can be controlled to operate at a preset rotating speed for a preset time, so that the motor operates stably, and then the first input power of the motor is acquired. The first input power may also be calculated according to the input current and the input voltage of the motor.
And S603, acquiring a third absolute difference value between the initial input power and the first input power.
And S604, judging the magnitude of the third absolute difference value and the third preset difference value.
Specifically, after the third absolute difference is obtained, the third absolute difference is compared with a third preset difference. Wherein, the third preset difference is also a preset value. When the third absolute difference is smaller than or equal to the third preset difference, it indicates that the input power fluctuation of the motor is within the preset range, and the unit air outlet area fluctuation of the air outlet of the air conditioner is smaller at this time, so that the rotation speed of the fan does not need to be adjusted, and the first static pressure value does not need to be obtained, namely step S605 is executed; and when the third absolute difference is greater than the third preset difference, it indicates that the input power fluctuation of the motor exceeds the preset range, and the unit air outlet area fluctuation of the air outlet of the air conditioner is large at this time, so that the rotation speed of the fan can be adjusted, and a first static pressure value needs to be obtained, that is, step S606 is executed.
And S605, forbidding obtaining the first static pressure value.
Specifically, when the third absolute difference is smaller than or equal to the third preset difference, the input power fluctuation of the motor is within the preset range, and the unit air outlet area fluctuation of the air outlet of the air conditioner is smaller at this time, so that the first static pressure value is forbidden to be obtained without adjusting the rotation speed of the fan.
And S606, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and acquiring a first static pressure value.
Specifically, when the third absolute difference is greater than the third preset difference, the input power fluctuation of the motor exceeds the preset range, and the unit air outlet area fluctuation of the air outlet of the air conditioner is large at this time, so that the rotating speed of the fan needs to be adjusted, that is, the first static pressure value needs to be obtained.
Alternatively, the manner of obtaining the third target rotation speed may refer to the manner of obtaining the target rotation speed in step S402, in this case, nt is the third target rotation speed, Q 0 For reference air volume, Q is air volume at a second target rotation speed, SP is static pressure value at the second target rotation speed, K 21 、K 22 、K 23 Is constant, Q is 0 For reference, Q is the air volume at the second target rotation speed, and SP is the static pressure value corresponding to the second target rotation speed, and the static pressure value is input into the formula for obtaining the target rotation speed in step S402, so as to obtain the third target rotation speed.
And after the third target rotating speed is obtained, adjusting the current rotating speed of the fan to be the third target rotating speed. And further, acquiring a first static pressure value, wherein the first static pressure value is the static pressure value of the air conditioner corresponding to the third target rotating speed.
In some embodiments, because an error exists between the operating rotating speed of the fan in the air conditioner and the preset rotating speed, and an error also exists between the input power of the motor and the preset input power, an error exists in the step of controlling the air conditioner according to the initial rotating speed of the fan and the initial input power of the motor, and the control accuracy is reduced. Therefore, in order to reduce control errors and improve control accuracy, the initial rotating speed of the fan and the initial input power of the motor can be corrected before the target static pressure value of the air conditioner when the fan runs is obtained.
As a possible implementation manner, the initial rotation speed of the fan and the initial input power of the motor may be determined according to the reference air volume of the air conditioner, the air volume of the air conditioner corresponding to the rotation speed when the fan is turned on, and the rated air volume of the air conditioner.
Wherein, the reference air volume of the air conditioner refers to the air volume of the air conditioner when the static pressure value is zero and the rotating speed of the fan is the preset rotating speed, namely Q 0 ＝f(nn,0)＝＝K 10 +K 11 * nn, wherein Q 0 For reference air volume, nn is a preset rotation speed.
When the air volume of the air conditioner corresponding to the rotation speed of the fan during the opening of the fan is obtained, the static pressure value of the air conditioner at the moment can be determined according to the rotation speed of the fan during the opening of the fan (namely the preset rotation speed) and the input power of the motor at the moment, and then the air volume of the air conditioner at the moment is determined according to the rotation speed of the fan during the opening of the fan and the static pressure value at the moment.
Alternatively, the initial rotation speed may be determined according to the following formula:
(K 10 +K 11 *n 0 )-Q 01 +Q 00 ＝Qn
wherein n is 0 At an initial rotation speed, Q 01 For reference air volume, Q 00 The air quantity of the air conditioner corresponding to the rotating speed when the fan is started, qn is rated air quantity, K 10 、K 11 Is a constant.
After the initial rotating speed is obtained, the mapping relation among the rotating speed, the power and the rated air volume can be inquired according to the initial rotating speed, and then the initial power is determined. For example, the mapping relation among the rotating speed, the power and the rated air quantity is Q Forehead (D) = f (n, P), when rated air quantity Q Forehead (D) If =2400, the initial rotation speed n is acquired 0 I.e. the initial input power P can be determined 0 。
For ease of understanding, the following explains a control method of the air conditioner provided in the present embodiment. Fig. 8 is a control flow diagram of a control method of an air conditioner provided in this embodiment, and as shown in fig. 8, the method includes the following steps:
and S701, acquiring an initial rotating speed and initial input power.
And S702, determining a target static pressure value according to the initial rotating speed and the initial input power.
And S703, receiving a control instruction for opening or closing the air outlet of the air conditioner.
And S704, acquiring first input power of the motor.
S705, judging the magnitude of a third absolute difference value and a third preset difference value between the initial input power and the first input power. If the third absolute difference is less than or equal to the third preset difference, executing step S706; if the third absolute difference is greater than the third preset difference, step S707 is performed.
And S706, prohibiting the first static pressure value from being acquired, and ending.
And S707, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and acquiring a first static pressure value.
And S707, judging the magnitude between a first absolute difference value and a first preset difference value between the target static pressure value and the first static pressure value. If the first absolute difference is less than or equal to the first preset difference, performing step S708; if the first absolute difference is greater than the first preset difference, step S709 is performed.
And S708, controlling the fan to keep running at the current rotating speed, and ending.
S709, obtaining a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
And S710, acquiring a second static pressure value of the air conditioner when the fan runs at the first target rotating speed.
And S711, judging the magnitude of a second absolute difference value between the target static pressure value and the second static pressure value and a second preset difference value. If the second absolute difference is less than or equal to the second preset difference, returning to execute step S708; if the second absolute difference is greater than the second preset difference, step S712 is performed.
And S712, acquiring a second target rotating speed of the fan, adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed, and ending.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. in the operation process of the air conditioner, the rotating speed of a fan of the air conditioner is adjusted by utilizing the target static pressure value and the first static pressure value of the air conditioner, so that the total air output of an air outlet of the air conditioner is adjusted, the unit area air output of the air outlet of the air conditioner is maintained unchanged, the user requirement is met, and the user experience is improved.
2. And determining whether to acquire the first static pressure value of the air conditioner by using the initial input power of the motor and the first input power of the motor after receiving the control command, so that the control accuracy is improved.
3. The initial speed and initial input power are corrected before the target static pressure value is obtained, providing control accuracy.
Based on the same inventive concept, the embodiment of the application also provides a device corresponding to the method in the embodiment.
Fig. 9 is a schematic structural diagram of a control device of an air conditioner according to an embodiment disclosed in the present application. As shown in fig. 9, the control device 200 of the air conditioner of the present embodiment includes:
the first acquisition module 21 is used for acquiring a target static pressure value of the air conditioner during the operation of a fan;
a second acquiring module 22 for receiving the air outlet of the air conditioner to be turned on or turned off and acquiring a first static pressure value when the fan operates currently;
and the control module 23 is configured to adjust the rotation speed of the fan according to the target static pressure value and the first static pressure value.
Further, the control module 23 is further configured to:
and identifying at least two fans, and respectively adjusting the rotating speed of each fan.
Further, the second obtaining module 22 is further configured to:
recognizing and receiving a control instruction for opening or closing an air outlet of the air conditioner;
and acquiring the static pressure value of the air conditioner after receiving the control command, and taking the static pressure value as a first static pressure value.
Further, the control module 23 is further configured to:
acquiring a first absolute difference value between a target static pressure value and a first static pressure value;
detecting and determining that the first insulation difference is smaller than or equal to a first preset difference, and controlling the fan to keep the current rotating speed to operate;
and detecting and determining that the first insulation difference value is greater than a first preset difference value, acquiring a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
Further, the control module 23 is further configured to:
acquiring a second static pressure value of the air conditioner when the fan operates at the first target rotating speed;
acquiring a second absolute difference value between the target static pressure value and a second static pressure;
detecting and determining that the second absolute difference is smaller than or equal to a second preset difference, and controlling the fan to keep the first target rotating speed to operate;
and detecting and determining that the second absolute difference is greater than a second preset difference, acquiring a second target rotating speed of the fan, and adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed.
Further, the first obtaining module 21 is further configured to:
acquiring initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at a target static pressure value;
acquiring first input power of the motor after receiving the control instruction;
detecting and determining that a third absolute difference between the initial input power and the first input power is smaller than or equal to a third preset difference, and forbidding obtaining of a first static pressure value;
and detecting and determining that the third absolute difference is greater than a third preset difference, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and acquiring a first static pressure value.
Further, still include:
and the determining module is used for determining the static pressure value of the air conditioner according to the rotating speed of the fan and the input power of the motor corresponding to the rotating speed of the fan.
Further, the determining module is further configured to:
determining the current air volume of the air conditioner according to the current static pressure value of the air conditioner;
and determining the target rotating speed of the fan according to the reference air volume of the air conditioner, the current air volume of the air conditioner and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner.
Further, the determining module is further configured to:
and determining the initial rotating speed of the fan and the initial input power of the motor according to the reference air volume of the air conditioner, the air volume of the air conditioner corresponding to the rotating speed when the fan is started and the rated air volume of the air conditioner.
It should be understood that the above-mentioned apparatus is used for executing the method in the above-mentioned embodiments, and the implementation principle and technical effect of the apparatus are similar to those described in the above-mentioned method, and the working process of the apparatus may refer to the corresponding process in the above-mentioned method, and is not described herein again.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. in the operation process of the air conditioner, the rotating speed of a fan of the air conditioner is adjusted by utilizing the target static pressure value and the first static pressure value of the air conditioner, so that the total air output of an air outlet of the air conditioner is adjusted, the unit area air output of the air outlet of the air conditioner is maintained unchanged, the user requirement is met, and the user experience is improved.
2. And determining whether to acquire the first static pressure value of the air conditioner by using the initial input power of the motor and the first input power of the motor after receiving the control command, so that the control accuracy is improved.
3. The initial speed and initial input power are corrected before the target static pressure value is obtained, providing control accuracy.
In order to implement the above embodiment, the present application further provides an air conditioner, as shown in fig. 10, including the control device 200 of the air conditioner in the above embodiment.
In order to implement the above embodiments, the present application further provides an electronic device, as shown in fig. 11, the electronic device 300 includes a memory 31, a processor 32; wherein the processor 32 runs the program corresponding to the executable program code by reading the executable program code stored in the memory 31 for implementing the steps of the above method.
In order to implement the method of the above embodiment, the present invention also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps of the above method.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A method of controlling an air conditioner, the air conditioner including a plurality of outlets, the method comprising:
the method comprises the steps of obtaining a target static pressure value of the air conditioner when a fan runs, wherein the static pressure value of the air conditioner is obtained according to the rotating speed of the fan and the corresponding motor input power of the fan, and the target static pressure value is the static pressure value of the air conditioner after the air conditioner receives a fan starting instruction and controls the fan to run at a preset rotating speed for a preset time according to the fan starting instruction;
recognizing a received control instruction for opening or closing an air outlet of the air conditioner, and controlling the corresponding air outlet to be opened or closed according to the control instruction;
acquiring a static pressure value of the air conditioner after the corresponding air outlet is opened or closed, and taking the static pressure value as a first static pressure value;
adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value so that the air outlet in an opening state has the same air output per unit area before and after the corresponding air outlet is opened or closed;
wherein after receiving the control instruction, the method further comprises:
acquiring initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at the target static pressure value;
acquiring first input power of the motor after the control instruction is received;
obtaining a third absolute difference between the initial input power and the first input power;
and detecting and determining that the third absolute difference is greater than a third preset difference, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and executing the step of acquiring the static pressure value of the air conditioner after the corresponding air outlet is opened or closed.
2. The method of claim 1, further comprising:
and identifying at least two fans, and respectively adjusting the rotating speed of each fan.
3. The method of claim 1, wherein the adjusting the rotational speed of the fan based on the target static pressure value and the first static pressure value comprises:
acquiring a first absolute difference value between the target static pressure value and the first static pressure value;
detecting and determining that the first insulation difference value is smaller than or equal to a first preset difference value, and controlling the fan to keep the current rotating speed to operate;
and detecting and determining that the first insulation difference value is greater than the first preset difference value, acquiring a first target rotating speed of the fan, and adjusting the current rotating speed of the fan to the first target rotating speed.
4. The method of claim 3, wherein after adjusting the current speed of the wind turbine to the first target speed, further comprising:
acquiring a second static pressure value of the air conditioner when the fan runs at the first target rotating speed;
obtaining a second absolute difference between the target static pressure value and the second static pressure;
detecting and determining that the second absolute difference is smaller than or equal to a second preset difference, and controlling the fan to keep the first target rotating speed to operate;
and detecting and determining that the second absolute difference is greater than the second preset difference, acquiring a second target rotating speed of the fan, and adjusting the rotating speed of the fan from the first target rotating speed to the second target rotating speed.
5. The method of claim 1, further comprising:
determining the current air volume of the air conditioner according to the current static pressure value of the air conditioner;
and determining the target rotating speed of the fan according to the reference air volume of the air conditioner, the current air volume of the air conditioner and the static pressure value of the air conditioner corresponding to the current air volume of the air conditioner.
6. The method of claim 1 or 4, wherein before obtaining the target static pressure value when the fan of the air conditioner is operated, the method further comprises:
and determining the initial rotating speed of the fan and the initial input power of the motor according to the reference air volume of the air conditioner, the air volume of the air conditioner corresponding to the rotating speed of the fan when the fan is started and the rated air volume of the air conditioner.
7. A control apparatus for an air conditioner, the air conditioner including a plurality of outlets, the apparatus comprising:
the air conditioner comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring a target static pressure value of a fan in the air conditioner during operation, the target static pressure value of the air conditioner is acquired according to the rotating speed of the fan and the corresponding motor input power of the fan, and the target static pressure value is the static pressure value of the air conditioner after the air conditioner receives a fan starting instruction and controls the fan to operate at a preset rotating speed for a preset time according to the fan starting instruction;
the second acquisition module is used for identifying and receiving a control instruction for opening or closing an air outlet of the air conditioner, wherein the control module is also used for controlling the corresponding air outlet to be opened or closed according to the control instruction; acquiring a static pressure value of the air conditioner after the corresponding air outlet is opened or closed, and taking the static pressure value as a first static pressure value;
the control module is used for adjusting the rotating speed of the fan according to the target static pressure value and the first static pressure value;
the second obtaining module is further used for obtaining the initial input power of a motor in the air conditioner when the static pressure value in the air conditioner is at the target static pressure value after receiving the control instruction; acquiring first input power of the motor after the control instruction is received; obtaining a third absolute difference between the initial input power and the first input power; and detecting and determining that the third absolute difference is greater than a third preset difference, acquiring a third target rotating speed of the fan, adjusting the current rotating speed of the fan to the third target rotating speed, and executing the step of acquiring the static pressure value of the air conditioner after the corresponding air outlet is opened or closed.
8. An air conditioner characterized by comprising the control device of the air conditioner according to claim 7.
9. An electronic device comprising a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the control method of the air conditioner according to any one of claims 1 to 6.
10. A computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the control method of an air conditioner according to any one of claims 1 to 6.
CN201910827006.9A 2019-09-03 2019-09-03 Air conditioner and control method and device thereof Active CN112443888B (en)

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