CN111854093A - Control method and device of variable frequency air conditioner and variable frequency air conditioner - Google Patents

Control method and device of variable frequency air conditioner and variable frequency air conditioner Download PDF

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Publication number
CN111854093A
CN111854093A CN201910345411.7A CN201910345411A CN111854093A CN 111854093 A CN111854093 A CN 111854093A CN 201910345411 A CN201910345411 A CN 201910345411A CN 111854093 A CN111854093 A CN 111854093A
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frequency
air conditioner
air
winding
pause
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CN201910345411.7A
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CN111854093B (en
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罗荣邦
许文明
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The application discloses a control method and a control device of a variable frequency air conditioner and the variable frequency air conditioner, which belong to the field of compressors, wherein in the method, a target frequency f is calculated according to a preset temperature Ts and an indoor environment temperature Tin; and judging whether the target frequency f is greater than the winding boundary frequency f4, if f is greater than or equal to f4, selecting a first winding mode of the motor and enabling the air-conditioning compressor to operate to the winding boundary frequency f4, switching the connection of a second winding mode, enabling the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms to respectively last for a preset time, and enabling the air-conditioning compressor to operate to the target frequency f. And selecting the connection mode of the motor and the first winding or the second winding by judging whether the target frequency f is greater than the winding dividing point frequency f4, and further controlling the running frequency and the running time of the compressor on each pause platform, so that the compressor runs stably and reliably.

Description

Control method and device of variable frequency air conditioner and variable frequency air conditioner
Technical Field
The application relates to the technical field of air conditioners, in particular to a control method and device of an inverter air conditioner and the inverter air conditioner.
Background
At present, along with the development of economy and the improvement of living standard, people have higher demands on variable frequency air conditioners with better comfort regulation and energy conservation.
When the air conditioner compressor of the existing air conditioner runs at certain frequency, resonance can be generated with a shell, a motor, a pipeline and the like, so that the noise is poor, and the pipeline stress exceeds the standard. After the air conditioner appeared protecting and removed, should slow running let the system stabilize, however along with the difference of indoor outside operating mode, the interior machine running load is different, to some special cases, can make air condition compressor's operation process unstable to probably lead to the unable normal operating of air condition compressor, cause the unstability of compressor operation.
Disclosure of Invention
The disclosed embodiments provide a control method and device of an inverter air conditioner and the inverter air conditioner, and the following presents a brief summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method of a variable frequency air conditioner.
In some embodiments, the method comprises:
s1, calculating a target frequency f according to the preset temperature Ts and the indoor environment temperature Tin;
And S2, judging whether the target frequency f is greater than the winding boundary frequency f4, if f is greater than or equal to f4, selecting a first winding mode of the motor, enabling the air-conditioning compressor to operate to the winding boundary frequency f4, switching to a second winding mode of the motor for wiring, enabling the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms, and respectively continuing for a preset time to enable the air-conditioning compressor to operate to the target frequency f.
The embodiment of the disclosure provides a control device of a variable frequency air conditioner.
In some embodiments, the apparatus comprises:
the calculating module is configured to calculate a target frequency f according to a preset temperature Ts and an indoor environment temperature Tin;
a judging module configured to judge the magnitude of the target frequency f and a winding dividing point frequency f4 of a motor of an air conditioner compressor;
and the control module is configured to control the air-conditioning compressor to select a first winding mode of the motor and enable the air-conditioning compressor to operate to a winding division point frequency f4 according to the judgment that the target frequency f is greater than or equal to the division point frequency f4 by the judgment module, switch to a second winding mode of the motor for wiring, enable the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms for a preset time respectively, and enable the air-conditioning compressor to operate to the target frequency f.
The embodiment of the disclosure provides a variable frequency air conditioner.
In some embodiments, the inverter air conditioner includes: technical solution of any embodiment of the apparatus described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the control method of the variable frequency air conditioner provided by the disclosure comprises the steps of judging whether a target frequency f is greater than a winding boundary frequency f4, if f is greater than or equal to f4, selecting a first winding mode of a motor and enabling an air-conditioning compressor to operate to the winding boundary frequency f4, switching a second winding mode for connection, enabling the air-conditioning compressor to sequentially operate to the frequencies of three pause platforms for respectively lasting for a preset time, enabling the air-conditioning compressor to operate to the target frequency f, controlling the motor of the air-conditioning compressor to be connected with the first winding mode or the second winding mode by judging whether the target frequency f is greater than the winding boundary frequency f4, further controlling the operating frequency and the operating time of the compressor on each pause platform (oil return platform), enabling the compressor to be more stable in the process of operating to the target frequency, and enabling the compressor to operate stably and reliably.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, are configured to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a control method of an inverter air conditioner according to an embodiment of the present disclosure;
fig. 2 is another schematic flow chart illustrating a control method of an inverter air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an embodiment of a control device of an inverter air conditioner according to an embodiment of the disclosure;
fig. 4 is a schematic diagram of another embodiment of a control device of an inverter air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another embodiment of a control device of an inverter air conditioner according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a computing module of a control device of an inverter air conditioner according to an embodiment of the disclosure;
fig. 7 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Reference numerals;
10-a calculation module; 101-a temperature difference calculation unit; 102-a target frequency calculation unit; 20-a judging module; 30-a control module; 40-frequency comparison module; 50-time alignment module; 60-wind speed comparison module; 70-a real-time detection module; 200-a processor; 201-a memory; 202-a communication interface; 203-bus.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing. So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
As shown in fig. 1, an embodiment of the present disclosure provides a method for controlling an inverter air conditioner, including:
s1, calculating a target frequency f according to the preset temperature Ts and the indoor environment temperature Tin;
alternatively, for example, a cooling mode may be selected to start the air conditioner, the air conditioner may be provided with a real-time detection module 70, a calculation module 10, a judgment module 20, and a control module 30, the real-time detection module 70 obtains the indoor environment temperature Tin and the preset temperature Ts (that is, the temperature set by the user) through a temperature sensor, and of course, the preset temperature Ts and the indoor environment temperature Tin may also be directly obtained through other modules, and then the calculation module 10 calculates the target frequency f.
And S2, judging whether the target frequency f is greater than the winding boundary frequency f4, if f is greater than or equal to f4, selecting a first winding mode of the motor, enabling the air-conditioning compressor to operate to the winding boundary frequency f4, switching the wiring of a second winding mode, enabling the air-conditioning compressor to sequentially operate to three pause platforms, and enabling the air-conditioning compressor to operate to the target frequency f.
In step S2, optionally, determining whether the target frequency f is greater than the winding dividing point frequency f4, if f is greater than or equal to f4, selecting a first winding mode, enabling the air-conditioning compressor to operate to the winding dividing point frequency f4 according to a preset speed V, switching a second winding mode for connection, enabling the air-conditioning compressor to operate to the frequency of the first pause platform according to the first preset operation speed V1 for a first pause time t1, and enabling the air-conditioning compressor to operate to the frequency of the second pause platform according to the second preset operation speed V2 for a second pause time t2 after the first pause time t1 is ended; after the second pause time t2 is finished, the air conditioner compressor is operated to the frequency of a third pause platform at a third preset operation speed V3 for a third pause time t 3; and after the third pause time t3 is finished, the air-conditioning compressor is operated to the target frequency f according to the fourth preset operation speed V4, the motor winding of the air-conditioning compressor is a first winding with larger impedance and a second winding with smaller impedance, the frequency of the first pause platform is f1, the frequency of the second pause platform is f2, the frequency of the third pause platform is f3, and f1, f2 and f3 are all larger than f 4.
Optionally, in the above operation, the first winding mode of the motor may be a Y-type, the second winding mode may be a triangular type, the winding switching dividing point frequency of the two winding modes, i.e., the winding dividing point frequency f4, is 65Hz (which may be adjusted according to motor winding parameters), the winding structure of the motor is switched by the winding switching part to select the Y-type or triangular connection mode, and the frequency of the first pause stage is f1(70Hz is adjustable) and the time is t1(1min is adjustable); the frequency of the second pause platform is f2 (adjustable at 88 Hz), and the time is t2 (adjustable at 1 min); the frequency of the third pause stage is f3(97Hz adjustable) and the time is t3(1min adjustable).
In some embodiments, the target frequency f is calculated according to a difference Δ T between the preset temperature Ts and the indoor ambient temperature Tin.
In the above operation, the difference Δ T between the indoor environment temperature Tin and the preset temperature Ts, where Δ T is equal to Tin-Ts, may be calculated by obtaining the indoor environment temperature Tin and the preset temperature Ts of the indoor unit of the air conditioner, and then the target frequency f may be calculated by the calculating module 10.
As shown in fig. 2, in some embodiments, the method further comprises: s101, correcting the target frequency f according to a wind shield of a fan in an air conditioner room, and when the wind speed r of the wind shield of the fan in the air conditioner room is less than or equal to r1, negatively correcting the target frequency; when r is larger than r2, the target frequency is corrected in the forward direction, wherein r1 and r2 are preset wind speed values.
When different windshields exist in the indoor unit of the air conditioner, after the target frequency f is obtained through the calculation, the target frequency f is corrected according to the windshields of the indoor fan of the air conditioner; when the wind speed r of a wind shield of a fan in the air conditioner is less than or equal to r1, the target frequency is corrected in a negative direction, so that the coagulation or freezing is prevented; when r is greater than r1 and less than or equal to r2, the target frequency is not corrected; when r is more than r2, the target frequency is corrected in the positive direction, the superheat degree is prevented from being larger, and the capacity output of the evaporator is reduced; judging whether the target frequency f is greater than the winding boundary frequency f4, if f is greater than or equal to f4, firstly selecting a first winding mode, enabling the air-conditioning compressor to operate to the winding boundary frequency f4 according to the V of 0.5Hz/s, switching a second winding mode for wiring at the moment, enabling the air-conditioning compressor to operate to the frequency f1 of the first pause platform according to the V1 of 2Hz/s for the first pause time t1(1min is adjustable), operating to the frequency f2 of the second pause platform according to the V2 of 2Hz/s for the second pause time t2(1min is adjustable) after the first pause time is finished, operating to the frequency f3 of the third pause platform according to the V3 of 2Hz/s for the third pause time t3(1min is adjustable); and after the third pause time is finished, the air conditioner compressor is operated to the target frequency f according to the V4 of 2Hz/s, so that the heat exchange effect is quickly achieved, and the operation of the compressor is more stable.
The air conditioner compressor is not limited to 0.5 or 2Hz/s according to the preset running speed and can be adjusted according to the requirement.
Optionally, when a damper exists in the air conditioning indoor unit, the target frequency f is k1 r + k2 Δ T + b + c, wherein k1 is a rotation speed coefficient; k2 is the temperature difference coefficient; b is a constant, r is the rotating speed of the indoor fan of the air conditioner, c is a frequency correction value, 0 is more than k1 and less than 1, and 1 is more than k2 and less than 3.
For example, k1 ═ 0.025; k2 ═ 2.212; b is 0.533(b can take different constant values according to actual needs), and meanwhile, the windshield of the indoor fan is set to be mute, low wind, medium wind, high wind and strong force, and the corresponding rotating speeds r are respectively 500rpm, 800rpm, 1200rpm, 1500rpm and 1700rpm (the rpm is an abbreviation of Revolentins Per minute, and is Revolutions Per minute);
setting the frequency raising speed V1 from the start-up of the press to the first pause time, the frequency raising speed from the end of the first pause time to the second pause time as V2, the frequency raising speed from the end of the second pause time to the end of the third pause time as V3, the frequency raising speed from the end of the third pause time to the target frequency as V4, the calculated delta T is 25 ℃ or more from 0 to 5 ℃, 5 to 10 ℃, 10 to 15 ℃, 15 to 20 ℃, 20 to 27 ℃ or more, and 27 ℃ or more, determining f according to the wind speed of the current indoor fan windshield and calculating f, if f is judged to be more than or equal to f4 in step S2, firstly selecting the Y829 mode, operating the air-conditioning compressor according to the V0.5 Hz/S winding to the pause frequency f 5, switching the connection mode to the first V466/S of the air-conditioning compressor as the first frequency of the first V466/S (the first pause time is from 0.5Hz/S to the boundary frequency f 4), and switching the first V462 to the third pause time from the third pause time to the third pause time (from the first pause time to the second pause time) of the air-10 Hz 3/S) and switching the air-3 min adjustable), after the first pause time is finished, the frequency f2 running to the second pause platform according to the V2 of 2Hz/s is continued for a second pause time t2(1min adjustable), and after the second pause time is finished, the frequency f3 running to the third pause platform according to the V3 of 0.5Hz/s is continued for a third pause time t3(1min adjustable); after the third pause time, the air conditioner compressor is operated to the target frequency f according to the V4 of 2 Hz/s. On the contrary, if the calculated f is less than f4, the Y winding mode is selected and the air conditioner compressor can be operated to the target frequency according to 0.5 Hz/s.
In step S2, the motor and the air-conditioning compressor are connected by a winding switching unit, the winding configuration of the motor is switched by the winding switching unit, and the winding switching unit is controlled to switch the operation according to the magnitude of f and f 4.
The motor is a three-phase motor having three-phase windings of U-phase, V-phase, and W-phase, and two terminals of each phase winding of the motor are connected to the winding switching unit, and the winding switching unit switches the connection of the terminals to the Y-winding connection as the first winding system or the delta-winding connection as the second winding system.
Optionally, when the air conditioning indoor unit has no windshield, i.e., in a mute mode, the target frequency f is k1 × r + k2 × Δ T + b, where k1 is a rotation speed coefficient; k2 is the temperature difference coefficient; b is a constant, r is the rotating speed of the indoor fan of the air conditioner, 0 is more than k1 and less than 1, and 1 is more than k2 and less than 3.
For example, k1 ═ 0.025; k2 ═ 2.212; b is 0.533(b can take different constant values according to actual needs), and the rotating speed r when the indoor fan is muted is 500rpm (rpm is an abbreviation of reduction Per minute), which is Revolutions Per minute);
setting a frequency raising speed V1 from the start-up of the press to a first pause time, setting a frequency raising speed V2 from the end of the first pause time to a second pause time, setting a frequency raising speed V3 from the end of the second pause time to a third pause time, setting a frequency raising speed V4 from the end of the third pause time to a target frequency, setting a calculated delta T equal to or more than 0 and delta T <5 ℃, setting a calculated delta T equal to or more than 5 ℃ and delta T <10 ℃, setting a calculated delta T equal to or more than 10 ℃ and delta T <15 ℃, setting a calculated f equal to or more than 27 ℃ and setting a calculated f equal to or more than 25 ℃ according to f k1 r + k 5 delta 865t + b, setting the calculated f equal to or more than 38735 Hz in a step S3, setting a Y-type winding mode to be selected, setting the air conditioner compressor to operate to a winding boundary point f4 according to V5 Hz/387, and then switching the connection mode to make the air conditioner operate the air conditioner for a first frequency raising speed V1 to a first pause time 1/1 (362/1), after the first pause time is finished, the frequency f2 running to the second pause platform according to the V2 of 2Hz/s is continued for a second pause time t2(1min is adjustable), and after the second pause time is finished, the frequency f3 running to the third pause platform according to the V3 of 0.5Hz/s is continued for a third pause time t3(1min is adjustable); after the third pause time, the air conditioner compressor is operated to the target frequency f according to the V4 of 2 Hz/s. On the contrary, if the calculated f is less than f4, the Y winding mode is selected and the air conditioner compressor can be operated to the target frequency according to 0.5 Hz/s.
The embodiment of the disclosure provides a control device of a variable frequency air conditioner.
As shown in fig. 3, in some embodiments, the control device of the inverter air conditioner includes:
a calculation module 10 configured to calculate a target frequency f according to a preset temperature Ts and an indoor environment temperature Tin;
a judging module 20 configured to judge the magnitude of the target frequency f and a winding dividing point frequency f4 of a motor of an air conditioner compressor;
and the control module 30 is configured to control the air-conditioning compressor to select the first winding mode of the motor and operate the air-conditioning compressor to the winding division point frequency f4 according to the judgment that the target frequency f is greater than or equal to the division point frequency f4 by the judgment module 20, switch the connection of the second winding mode, enable the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms for the preset time respectively, and enable the air-conditioning compressor to operate to the target frequency f.
In this embodiment, the calculation module 10 calculates a target frequency f by using the obtained preset temperature Ts and the indoor environment temperature Tin, the determination module 20 determines a magnitude relationship between f and f4 according to the calculated target frequency f, and the control module 30 controls the air-conditioning compressor to select a first winding mode (Y-winding mode) of the motor and to operate the air-conditioning compressor to a winding division point frequency f4 according to a determination result of the determination module 20 that f is greater than or equal to f4, and switches a second winding mode (delta-winding mode) so that the air-conditioning compressor sequentially operates to the frequencies of three pause platforms for a preset time respectively and operates to the target frequency f.
As shown in fig. 4, in some embodiments, the apparatus further comprises:
a frequency comparison module 40 configured to compare the operating frequency of the air conditioner compressor with the frequency of the pause platform, obtain a comparison result, and send the comparison result to the control module 30;
the time comparison module 50 is configured to compare the running time of the air conditioner compressor with a preset pause platform time, obtain a comparison result, and send the comparison result to the control module 30;
the control module 30 controls the operating frequency of the air conditioner compressor according to the comparison result of the frequency comparison module 40, and then continuously controls the operating frequency of the air conditioner compressor according to the comparison result of the time comparison module 50.
In this embodiment, after the determining module 20 determines that f is greater than or equal to f4, the frequency comparing module 40 compares the operating frequency of the air conditioner compressor with the frequency of the pause platform and sends the comparison result of the time comparing module 50 to the control module 30, and the control module 30 controls the motor winding mode of the air conditioner compressor according to the comparison result, so as to control the operating frequency of the air conditioner compressor to operate to the target frequency value.
As shown in fig. 4, in some embodiments, the apparatus further comprises:
A wind speed comparison module 60 configured to compare the wind speed of the windshield of the indoor unit of the air conditioner with a preset wind speed, obtain a comparison result, and send the comparison result to the control module 30;
the control module 30 corrects the target frequency f according to the comparison result of the wind speed comparison module 60.
In this embodiment, on the basis of the frequency comparison module 40 and the time comparison module 50, the comparison result obtained by the wind speed comparison module 60 may be sent to the control module 30, the control module 30 corrects the target frequency according to the comparison result of the wind speed comparison module 60, the determination module 20 determines the magnitude relationship between f and f4 according to the corrected target frequency f, and then sends the relationship to the control module 30, and the control module 30 controls the motor winding mode of the air conditioner compressor according to the determination result, so as to control the operation frequency of the air conditioner compressor to the target frequency value.
As shown in fig. 5, in some embodiments, the apparatus further comprises:
the real-time detection module 70 is configured to detect the operating frequency, the operating time, the windshield wind speed and the indoor environment temperature of the air conditioner compressor in real time, and send the detected indoor environment temperature to the calculation module 10, the detected operating frequency of the air conditioner compressor to the frequency comparison module 40, the detected operating time of the air conditioner compressor to the time comparison module 50, and the detected windshield wind speed of the air conditioner compressor to the wind speed comparison module 60.
In this embodiment, the frequency comparison module 40, the time comparison module 50 and the wind speed comparison module 60 may obtain corresponding parameters by detecting the operating frequency, the operating time and the wind speed of the air conditioner compressor in real time through the real-time detection module 70, and the calculation module 10 may also obtain corresponding parameters by detecting the indoor environment temperature in real time through the real-time detection module 70.
As shown in fig. 6, in some embodiments, the calculation module 10 includes:
a temperature difference calculation unit 101 configured to calculate a difference Δ T between the indoor ambient temperature Tin and a preset temperature Ts; and
a target frequency calculation unit 102 configured to calculate the target frequency f according to a calculation result of the temperature difference calculation unit 101.
In this embodiment, after obtaining the indoor ambient temperature Tin and the preset temperature Ts, the difference Δ T between the indoor ambient temperature Tin and the preset temperature Ts may be calculated by the temperature difference calculating unit 101, where Δ T is equal to Tin-Ts, and then the target frequency calculating unit 102 calculates the target frequency f by using Δ T.
The embodiment of the disclosure provides a variable frequency air conditioner.
In some embodiments, the inverter air conditioner includes the apparatus of any of the above embodiments:
In this embodiment, the inverter air conditioner includes the apparatus according to any of the above embodiments, so that all the advantages of the apparatus are achieved, and details are not repeated herein.
An embodiment of the present disclosure provides an electronic device, a structure of which is shown in fig. 7, the electronic device including:
at least one processor (processor)200, one processor 200 being exemplified in fig. 7; and a memory (memory)201, and may further include a Communication Interface (Communication Interface)202 and a bus 203. The processor 200, the communication interface 202 and the memory 201 can communicate with each other through the bus 203. The communication interface 202 may be used for information transfer. The processor 200 may call the logic instructions in the memory 201 to execute the control method of the above-described embodiment.
In addition, the logic instructions in the memory 201 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 201 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 200 executes the functional application and data processing by executing the software program, instructions and modules stored in the memory 201, that is, implements the control method in the above-described method embodiment.
The memory 201 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 201 may include a high-speed random access memory, and may also include a nonvolatile memory.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A control method of an inverter air conditioner is characterized by comprising the following steps:
calculating a target frequency f according to a preset temperature Ts and an indoor environment temperature Tin;
and judging whether the target frequency f is greater than the winding boundary frequency f4, if f is greater than or equal to f4, selecting a first winding mode of the motor and enabling the air-conditioning compressor to operate to the winding boundary frequency f4, switching to a second winding mode of the motor for wiring, enabling the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms for preset time respectively, and enabling the air-conditioning compressor to operate to the target frequency f.
2. The method of claim 1,
and calculating the target frequency f according to the difference delta T between the preset temperature Ts and the indoor environment temperature Tin.
3. The method of claim 1, further comprising:
if f is greater than or equal to f4, selecting a first winding mode, enabling the air-conditioning compressor to operate to a winding dividing point frequency f4 according to a preset speed V, switching the wiring of a second winding mode, enabling the air-conditioning compressor to operate to the frequency of a first pause platform according to a first preset operation speed V1 for a first pause time t1, and enabling the air-conditioning compressor to operate to the frequency of a second pause platform according to a second preset operation speed V2 for a second pause time t2 after the first pause time t1 is finished; after the second pause time t2 is finished, the air conditioner compressor is operated to the frequency of a third pause platform at a third preset operation speed V3 for a third pause time t 3; and after the third pause time t3 is finished, the air-conditioning compressor is operated to the target frequency f according to the fourth preset operation speed V4, the motor winding of the air-conditioning compressor is a first winding with larger impedance and a second winding with smaller impedance, the frequency of the first pause platform is f1, the frequency of the second pause platform is f2, the frequency of the third pause platform is f3, and f1, f2 and f3 are all larger than f 4.
4. The method of claim 1, further comprising:
correcting the target frequency f according to the wind shield of the indoor fan of the air conditioner, and when the wind speed r of the wind shield of the indoor fan of the air conditioner is less than or equal to r1, negatively correcting the target frequency; when r is larger than r2, the target frequency is corrected in the forward direction, wherein r1 and r2 are preset wind speed values.
5. A control device of a variable frequency air conditioner is characterized by comprising:
the calculating module is configured to calculate a target frequency f according to a preset temperature Ts and an indoor environment temperature Tin;
a judging module configured to judge the magnitude of the target frequency f and a winding dividing point frequency f4 of a motor of an air conditioner compressor;
and the control module is configured to control the air-conditioning compressor to select a first winding mode of the motor and enable the air-conditioning compressor to operate to a winding division point frequency f4 according to the judgment that the target frequency f is greater than or equal to the division point frequency f4 by the judgment module, switch to a second winding mode of the motor for wiring, enable the air-conditioning compressor to sequentially operate to the frequencies of the three pause platforms for a preset time respectively, and enable the air-conditioning compressor to operate to the target frequency f.
6. The apparatus of claim 5, further comprising:
The frequency comparison module is configured to compare the operating frequency of the air conditioner compressor with the frequency of the pause platform, obtain a comparison result and send the comparison result to the control module;
the time comparison module is configured to compare the running time of the air conditioner compressor with the preset pause platform time, obtain a comparison result and send the comparison result to the control module;
the control module controls the running frequency of the air-conditioning compressor according to the comparison result of the frequency comparison module, and then continuously controls the running frequency of the air-conditioning compressor according to the comparison result of the time comparison module.
7. The apparatus of claim 6, further comprising:
the air speed comparison module is configured to compare the wind speed of a windshield of the indoor unit of the air conditioner with a preset wind speed, obtain a comparison result and send the comparison result to the control module;
and the control module corrects the target frequency f according to the comparison result of the wind speed comparison module.
8. The apparatus of claim 7, further comprising:
the real-time detection module is configured to detect the running frequency, the running time, the wind speed and the indoor environment temperature of the air conditioner compressor in real time, and send the detected indoor environment temperature to the calculation module, the detected running frequency of the air conditioner compressor to the frequency comparison module, the detected running time of the air conditioner compressor to the time comparison module, and the detected wind speed of the wind screen of the air conditioner compressor to the wind speed comparison module.
9. The apparatus of claim 5, wherein the computing module comprises:
a temperature difference calculation unit configured to calculate a difference Δ T between the indoor ambient temperature Tin and a preset temperature Ts; and
a target frequency calculation unit configured to calculate the target frequency f from a calculation result of the temperature difference calculation unit.
10. An inverter air conditioner characterized by comprising the apparatus of any one of claims 5 to 9.
CN201910345411.7A 2019-04-26 2019-04-26 Control method and device of variable frequency air conditioner and variable frequency air conditioner Active CN111854093B (en)

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CN109114729A (en) * 2018-07-26 2019-01-01 青岛海尔空调器有限总公司 A kind of air-conditioner control method and air conditioner
CN109210708A (en) * 2018-08-23 2019-01-15 青岛海尔空调器有限总公司 Cooler compressor control method, control device and air conditioner
WO2019035198A1 (en) * 2017-08-17 2019-02-21 三菱電機株式会社 Air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001197787A (en) * 1999-11-05 2001-07-19 Mitsubishi Heavy Ind Ltd Armature coil switching system of generator for automotive air conditioning system
CN102705212A (en) * 2012-06-07 2012-10-03 青岛海尔空调电子有限公司 Method for starting variable frequency compressor
WO2019035198A1 (en) * 2017-08-17 2019-02-21 三菱電機株式会社 Air conditioner
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CN109210708A (en) * 2018-08-23 2019-01-15 青岛海尔空调器有限总公司 Cooler compressor control method, control device and air conditioner

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