CN111878913A - Variable frequency control method and device, air conditioner and storage medium - Google Patents
Variable frequency control method and device, air conditioner and storage medium Download PDFInfo
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- CN111878913A CN111878913A CN202010633556.XA CN202010633556A CN111878913A CN 111878913 A CN111878913 A CN 111878913A CN 202010633556 A CN202010633556 A CN 202010633556A CN 111878913 A CN111878913 A CN 111878913A
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/22—Arrangement or mounting thereof
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—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
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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
- F24F11/70—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
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/40—Damper positions, e.g. open or closed
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- 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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Inverter Devices (AREA)
Abstract
The invention provides a variable frequency control method and device, an air conditioner and a storage medium, and relates to the technical field of air conditioners. The frequency conversion control method comprises the following steps: acquiring the temperature of an outer machine electric control box; and when the temperature of the outer machine electric control box is higher than the second preset temperature and lower than or equal to a third preset temperature, controlling the air conditioner to enter a frequency raising prohibition mode. According to the technical scheme, the frequency increasing prohibition mode is set, the increase of the operation frequency is limited in time when the temperature of the external machine electric control box is high, and the temperature of the external machine electric control box is further effectively limited to continue to increase, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a frequency conversion control method and device, an air conditioner and a storage medium.
Background
The electric control box of the outer machine of the inverter air conditioner consumes more electricity and generates heat obviously when in work, and the existing solution is generally as follows: an aluminum profile radiator is arranged below the electric control box, and heat on the aluminum profile radiator is taken away by utilizing an air exhaust heat dissipation mode through the operation of an outdoor fan. However, the outdoor fan has limited air volume and is greatly influenced by the outdoor environment temperature, so that the cooling effect of the aluminum profile radiator is limited.
Disclosure of Invention
The invention solves the problem that the cooling effect of the existing variable frequency air conditioner electric control box in a heat dissipation mode is poor.
In order to solve the above problems, the present invention provides a frequency conversion control method, including: acquiring the temperature of an outer machine electric control box; and when the temperature of the outer machine electric control box is higher than the second preset temperature and lower than or equal to a third preset temperature, controlling the air conditioner to enter a frequency raising prohibition mode.
According to the frequency conversion control method, the frequency increasing prohibition mode is set, the operation frequency is limited to be increased in time when the temperature of the external machine electric control box is higher, and further the temperature of the external machine electric control box is effectively limited to be increased continuously, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Preferably, the frequency conversion control method further includes: when the air conditioner is in the frequency-up prohibition mode, if the temperature of the outer machine electric control box is higher than a fourth preset temperature, the air conditioner is controlled to enter a first frequency-reduction mode, wherein in the first frequency-reduction mode, the running frequency of the air conditioner is reduced at a first speed.
According to the frequency conversion control method, the operating power of the air conditioner is reduced by setting the first frequency reduction mode, the temperature of the outer machine electric control box is reduced by reducing the frequency in time when the temperature of the outer machine electric control box is higher, and the temperature of the outer machine electric control box is effectively limited to be continuously increased, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Preferably, the frequency conversion control method further includes: when the air conditioner is in a first frequency reduction mode, if the temperature of the outer machine electric control box is higher than a third preset temperature, the air conditioner is controlled to enter a second frequency reduction mode, wherein in the second frequency reduction mode, the running frequency of the air conditioner is reduced at a second speed, and the second speed is higher than the first speed.
According to the variable frequency control method, the operating power of the air conditioner is quickly reduced by setting the second frequency reduction mode, the temperature of the outer machine electric control box is reduced by the higher frequency reduction speed when the temperature of the outer machine electric control box continues to rise, and the temperature of the outer machine electric control box is effectively limited to continue to rise, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Preferably, the frequency conversion control method further includes: when the air conditioner is in a first frequency reduction mode, the inner machine windshield is reduced according to the real-time rotating speed so as to reduce the upper limit value of the operating frequency of the air conditioner.
According to the variable frequency control method, the upper limit value of the operating frequency of the air conditioner is reduced by reducing the inner machine windshield according to the real-time rotating speed in the first frequency reduction mode, so that the temperature of the outer machine electric control box is effectively limited to be continuously increased, the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Preferably, the frequency conversion control method further includes: and when the temperature of the outer machine electric control box is less than or equal to a first preset temperature, controlling the air conditioner to enter a conventional mode.
According to the variable frequency control method, the normal operation of each component of the external unit electric control box of the variable frequency air conditioner is effectively ensured by setting a conventional mode.
Preferably, the frequency conversion control method further includes: and when the temperature of the outer machine electric control box is higher than a first preset temperature and lower than or equal to a second preset temperature, controlling the air conditioner to enter an up-frequency mode.
According to the variable frequency control method, the frequency increasing mode is set, the temperature change is monitored in real time within the early warning range, the temperature of the outer machine electric control box is maintained within the allowable temperature range, the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Preferably, the acquiring the temperature of the external electric control box includes: and after the air conditioner is started and operates for a first preset time, continuously detecting the temperature of the outer machine electric control box within a second preset time.
According to the variable frequency control method, the temperature of the external machine electric control box within the second preset time is continuously detected after the air conditioner is started to operate for the first preset time, and the detection is performed when the operation of the air conditioner tends to be stable, so that the accuracy of the detected temperature of the external machine electric control box is effectively ensured, the corresponding judgment can be favorably executed according to the accurate temperature of the external machine electric control box, and the normal operation of the electric control box is protected.
The present invention also provides a frequency conversion control apparatus, comprising: the acquisition unit is used for acquiring the temperature of the outer machine electric control box; and the processing unit is used for controlling the running frequency of the air conditioner according to the temperature of the outer machine electric control box. Compared with the prior art, the frequency conversion control device and the frequency conversion control method have the same advantages, and are not repeated herein.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the frequency conversion control method. Compared with the prior art, the air conditioner and the variable frequency control method have the same advantages, and are not repeated herein.
The invention also provides a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the computer program implements the frequency conversion control method according to any one of the above. The advantages of the computer readable storage medium and the frequency conversion control method are the same as those of the prior art, and are not described herein again.
Drawings
Fig. 1 is a first flowchart of a frequency conversion control method according to an embodiment of the present invention;
fig. 2 is a flowchart of a frequency conversion control method according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The problems of the prior art are briefly explained here: the outer machine electric control box of the variable frequency air conditioner has the advantages that power consumption and heating are obvious during working, if the heat productivity cannot be timely transferred and dissipated, the outer machine electric control box and components on the electric control box are seriously heated and even exceed an allowable range after the outer machine electric control box is operated for a period of time, normal operation of the outer machine electric control box can be affected, the service life of the components on the electric control box is greatly shortened, and even the electric control box is burnt out and the fire hazard occurs. The current common method is as follows: an aluminum profile radiator is arranged below the electric control box, and heat on the aluminum profile radiator is taken away by utilizing an air exhaust heat dissipation mode through the operation of an outdoor fan. The method has the advantages that the outdoor fan can be directly used for exhausting air to cool the aluminum profile radiator, other parts are not required to be added, and the method is simple and low in cost; the defects are that the air quantity of the outdoor fan is limited, the outdoor environment temperature is greatly influenced, and the cooling effect of the aluminum profile radiator is limited. When the heat dissipation of the outer machine electric control box is poor and the temperature rise of components is too high, parameters such as the running current of the whole machine do not reach the action point of frequency limiting and even frequency reduction of the compressor, the air conditioner is in an overload running state, and the service lives of the air conditioner and the components are greatly shortened.
As shown in fig. 1, an embodiment of the present invention provides a frequency conversion control method, including: acquiring the temperature of an outer machine electric control box; and when the temperature of the outer machine electric control box is higher than the second preset temperature and lower than or equal to a third preset temperature, controlling the air conditioner to enter a frequency raising prohibition mode.
Specifically, in this embodiment, as shown in fig. 1, the frequency conversion control method includes: the temperature of the outer unit electric control box is obtained, for example, the outer unit electric control box temperature sensing package is installed in the outer unit electric control box of the variable frequency air conditioner, the installation position of the outer unit electric control box temperature sensing package is generally selected in the middle of the electric control box and is close to a main heating source of the electric control box, the box temperature condition of the outer unit electric control box is detected and collected through the electric control box temperature sensing package, after the variable frequency air conditioner starts to operate, along with the continuous rising of the operation frequency of an outer unit compressor, the temperature in the outer unit electric control box can also continuously rise, at the moment, the variable frequency air conditioner can control and regulate according to the temperature data detected and collected by the electric control box temperature sensing package, therefore, the subsequent steps are that when the temperature of the outer unit electric control box is higher than a second preset temperature and lower than or equal to a third preset temperature, the air conditioner is controlled to enter a frequency rising forbidding mode, the operation frequency of the air conditioner, because the air conditioner enters the frequency rising forbidding mode, the temperature T of the outer machine electric control box can be effectively limited to continue rising, the temperature of the outer machine electric control box is maintained within an allowable temperature range, the temperature rising of the outer machine electric control box is prevented from exceeding the standard, the damage to components on the outer machine electric control box is avoided, the service life of the air conditioner is shortened, and the service life of the air conditioner is effectively prolonged.
In this embodiment, by setting the frequency-up prohibition mode, the operation frequency is limited to be increased in time when the temperature of the external machine electric control box is high, so that the temperature of the external machine electric control box is effectively limited to be increased continuously, the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Optionally, the frequency conversion control method further includes: when the air conditioner is in the frequency-up prohibition mode, if the temperature of the outer machine electric control box is higher than a fourth preset temperature, the air conditioner is controlled to enter a first frequency-reduction mode, wherein in the first frequency-reduction mode, the running frequency of the air conditioner is reduced at a first speed.
Specifically, in this embodiment, as shown in fig. 2, when the air conditioner is in the frequency up prohibition mode, after the air conditioner is prohibited to operate in the frequency up prohibition mode for 5min, for example, if the temperature T of the outer machine electronic control box is greater than the fourth preset temperature T4 and the temperature T of the outer machine electronic control box continues to rise, the air conditioner is controlled to enter the first frequency reduction mode, i.e., the slow frequency reduction mode, the operating frequency of the variable frequency air conditioner is slowly reduced, generally 1Hz/3min, and meanwhile, the wind level of the inner machine can be slowly reduced according to the instant rotation speed, so as to reduce the upper limit value of the operating frequency of the compressor.
Wherein, interior machine fan has interchange and direct current to distinguish, and to the air conditioner that is the alternating current motor fan, the processing mode that falls slowly reduces according to the windshield and carries out the operation, for example: powerful wind → high wind, generally in the order of powerful → high → medium → low → quiet; for the air conditioner of the direct current motor fan, the slow-falling treatment mode can be adjusted steplessly according to the percentage, such as 100% → 90%, and the proportion is generally selected to be 10%/3 min; considering the hysteresis of the actual temperature rise of the electric control box, the slow-down period can be regulated to be 3 min.
In this embodiment, the operating power of the air conditioner is reduced by setting the first frequency reduction mode, the temperature of the outer machine electric control box is reduced by reducing the frequency in time when the temperature of the outer machine electric control box is higher, and the temperature of the outer machine electric control box is effectively limited to continue rising, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Optionally, the frequency conversion control method further includes: when the air conditioner is in a first frequency reduction mode, if the temperature of the outer machine electric control box is higher than a third preset temperature, the air conditioner is controlled to enter a second frequency reduction mode, wherein in the second frequency reduction mode, the running frequency of the air conditioner is reduced at a second speed, and the second speed is higher than the first speed.
Specifically, in this embodiment, as shown in fig. 2, when the air conditioner is in the first frequency-reduction mode, after the air conditioner operates for 5min in the first frequency-reduction mode, if the temperature T of the external unit electrical control box is greater than a third preset temperature T3 and the temperature T of the external unit electrical control box is not yet decreased, the air conditioner is controlled to enter the second frequency-reduction mode, i.e., the fast frequency-reduction mode, the operating frequency of the inverter air conditioner is rapidly decreased, generally 1Hz/30S is selected, the operating frequency of the inverter air conditioner can be effectively decreased, so that the operating power consumption of the whole air conditioner is continuously decreased, thereby effectively protecting the normal operation of the electrical control box, and further increasing the service life of the air.
In the second frequency-reducing mode, if the temperature T of the outer unit electronic control box is reduced to be less than or equal to the third preset temperature T3, the air conditioner enters the first frequency-reducing mode.
In this embodiment, the operating power of the air conditioner is rapidly reduced by setting the second frequency reduction mode, the temperature of the outer machine electric control box is reduced by a faster frequency reduction speed when the temperature of the outer machine electric control box continues to rise, and the temperature of the outer machine electric control box is effectively limited to continue to rise, so that the normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Optionally, the frequency conversion control method further includes: when the air conditioner is in a first frequency reduction mode, the inner machine windshield is reduced according to the real-time rotating speed so as to reduce the upper limit value of the operating frequency of the air conditioner.
Specifically, in this embodiment, the frequency conversion control method further includes: when the air conditioner is in a first frequency reduction mode, the inner machine windshield is reduced according to the real-time rotating speed so as to reduce the upper limit value of the operating frequency of the air conditioner, namely, the inner machine rotating speed is subjected to slow reduction treatment, for example, an inner machine fan is distinguished by alternating current and direct current, and for the air conditioner which is an alternating current motor fan, the slow reduction treatment mode is that the air conditioner is operated according to wind gear reduction, such as: powerful wind → high wind, generally in the order of powerful → high → medium → low → quiet; for the air conditioner of the direct current motor fan, the slow-falling treatment mode can be adjusted steplessly according to the percentage, such as 100% → 90%, and the proportion is generally selected to be 10%/3 min; considering the hysteresis of the actual temperature rise of the electric control box, the slow-down period can be regulated to be 3 min. The upper limit value of the running frequency of the air conditioner is reduced by reducing the inner machine windshield according to the real-time rotating speed in the first frequency reduction mode, so that the temperature of the outer machine electric control box is effectively limited to continue rising, normal running of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
In this embodiment, the upper limit value of the operating frequency of the air conditioner is reduced by reducing the windshield of the inner machine according to the real-time rotating speed in the first frequency reduction mode, so that the temperature of the outer machine electric control box is effectively limited to continue rising, normal operation of the electric control box is effectively protected, and the service life of the air conditioner is prolonged.
Optionally, the frequency conversion control method further includes: and when the temperature of the outer machine electric control box is less than or equal to a first preset temperature, controlling the air conditioner to enter a conventional mode.
Specifically, in this embodiment, as shown in fig. 2, the controlling the operating frequency of the air conditioner according to the temperature of the external unit electronic control box includes: when the air conditioner is started to operate for 1min, for example, the temperature T of the outdoor unit electric control box within 5s is continuously detected, when the temperature T of the outdoor unit electric control box is smaller than or equal to a first preset temperature T1, the air conditioner is controlled to enter a conventional mode, the conventional mode comprises a refrigeration mode, a dehumidification mode, a heating mode and the like, the temperature T of the outdoor unit electric control box is within a good range, and normal operation of all components of the outdoor unit electric control box of the variable frequency air conditioner is effectively guaranteed.
In contrast to the conventional mode, the up-conversion mode-the disabled up-conversion mode-the first down-conversion mode-the second down-conversion mode may be collectively referred to as a frequency control mode.
In this embodiment, through setting up conventional mode, effectively guarantee the normal work of each components and parts of outer quick-witted automatically controlled box of inverter air conditioner.
Optionally, the frequency conversion control method further includes: and when the temperature of the outer machine electric control box is higher than a first preset temperature and lower than or equal to a second preset temperature, controlling the air conditioner to enter an up-frequency mode.
Specifically, in this embodiment, as shown in fig. 2, the controlling the operating frequency of the air conditioner according to the temperature of the external unit electronic control box includes: when the temperature T of the outer unit electric control box is greater than a first preset temperature T1 and less than or equal to a second preset temperature T2, controlling the air conditioner to enter a frequency-increasing mode, wherein the second preset temperature T2 is the temperature inside a rated box of the air conditioner electric control box, the first preset temperature T1 is generally 2-8 ℃ lower than the second preset temperature T2, the preferred value is 5 ℃, for example, the second preset temperature T2 is 65 ℃, the first preset temperature T1 can be 60 ℃, when the temperature T of the outer unit electric control box is in the range of 60-65 ℃, controlling the air conditioner to enter the frequency-increasing mode, the frequency-increasing rate of the compressor of the variable frequency air conditioner is generally 1Hz/30S, and is a slow increasing speed, and because the temperature of the electric control box is in an early warning range, normal operation of the outer unit electric control box part of the variable frequency air conditioner may have a certain risk, the frequency-increasing mode is set to effectively protect normal operation of the box, thereby prolonging the service life of the air conditioner.
Fig. 2 is a schematic flow chart illustrating the gradual increase of the temperature T of the external unit electronic control box, and does not represent that the control method of the present invention can only be performed according to the control flow of the conventional mode, the up-conversion mode, the no-up-conversion mode, the first down-conversion mode, and the second down-conversion mode; for example, when the inverter air conditioner runs from the morning to the noon and the afternoon, the outdoor temperature is continuously increased, and the temperature increase of the external unit electric control box is obvious and outstanding, generally, the inverter air conditioner firstly enters a frequency increasing forbidding mode from a conventional mode and a frequency increasing mode, and after the inverter air conditioner continuously runs, if the temperature T of the external unit electric control box is continuously increased and T is more than T4, the inverter air conditioner enters a first frequency reduction mode, namely a slow frequency reduction mode, and the temperature T of the external unit electric control box is not reduced and T is more than T3, the inverter air conditioner enters a second frequency reduction mode, namely a fast frequency reduction mode, so that the power consumption of the air conditioner is reduced as soon as possible, and the normal running of.
In this embodiment, through setting up the mode of raising the frequency, to temperature variation real time monitoring in the early warning within range for outer automatically controlled box temperature of machine maintains in the temperature range that allows, effectively protects the normal operating of automatically controlled box, and then improves the life of air conditioner.
Optionally, the obtaining the temperature of the external electric control box includes: and after the air conditioner is started and operates for a first preset time, continuously detecting the temperature of the outer machine electric control box within a second preset time.
Specifically, in this embodiment, obtaining the temperature of the external electric control box includes: after the air conditioner is started and operates for a first preset time, continuously detecting the temperature of the external unit electric control box within a second preset time, for example, the first preset time is 1min, and the second preset time is 5s, then after the air conditioner is started and operates for 1min, continuously detecting the temperature T of the external unit electric control box within 5s, and averaging all detected values to obtain the final temperature T of the external unit electric control box, wherein the continuously detected 5s time can be any 5s time after the air conditioner operates for 1min, so as to ensure the accuracy of the detected temperature of the external unit electric control box.
In addition, as shown in fig. 2, when the air conditioner enters the frequency up prohibition mode, the first frequency down mode and the second frequency down mode, the air conditioner operates for 5min, so as to ensure that the operating parameters of the air conditioner approach to the stable state in the mode, and then the corresponding determination is performed.
In this embodiment, the temperature of the external unit electronic control box within the second preset time is continuously detected after the air conditioner is started to operate for the first preset time, and the detection is performed when the operation of the air conditioner tends to be stable, so that the accuracy of the detected temperature of the external unit electronic control box is effectively ensured, the corresponding judgment is favorably executed according to the accurate temperature of the external unit electronic control box, and the normal operation of the electronic control box is protected.
Another embodiment of the present invention provides a frequency conversion control apparatus, including: the acquisition unit is used for acquiring the temperature of the outer machine electric control box; and the processing unit is used for controlling the running frequency of the air conditioner according to the temperature of the outer machine electric control box. Compared with the prior art, the frequency conversion control device and the frequency conversion control method have the same advantages, and are not repeated herein.
Another embodiment of the present invention provides an air conditioner, including a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement the frequency conversion control method according to any one of the above. Compared with the prior art, the air conditioner and the variable frequency control method have the same advantages, and are not repeated herein.
Another embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the computer program implements the frequency conversion control method according to any one of the above. The advantages of the computer readable storage medium and the frequency conversion control method are the same as those of the prior art, and are not described herein again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A frequency conversion control method is characterized by comprising the following steps:
acquiring the temperature of an outer machine electric control box;
and when the temperature of the outer machine electric control box is higher than the second preset temperature and lower than or equal to a third preset temperature, controlling the air conditioner to enter a frequency raising prohibition mode.
2. The frequency conversion control method according to claim 1, further comprising:
when the air conditioner is in the frequency-up prohibition mode, if the temperature of the outer machine electric control box is higher than a fourth preset temperature, the air conditioner is controlled to enter a first frequency-reduction mode, wherein in the first frequency-reduction mode, the running frequency of the air conditioner is reduced at a first speed.
3. The frequency conversion control method according to claim 2, further comprising:
when the air conditioner is in a first frequency reduction mode, if the temperature of the outer machine electric control box is higher than a third preset temperature, the air conditioner is controlled to enter a second frequency reduction mode, wherein in the second frequency reduction mode, the running frequency of the air conditioner is reduced at a second speed, and the second speed is higher than the first speed.
4. The frequency conversion control method according to claim 2, further comprising:
when the air conditioner is in a first frequency reduction mode, the inner machine windshield is reduced according to the real-time rotating speed so as to reduce the upper limit value of the operating frequency of the air conditioner.
5. The frequency conversion control method according to claim 1, further comprising:
and when the temperature of the outer machine electric control box is less than or equal to a first preset temperature, controlling the air conditioner to enter a conventional mode.
6. The frequency conversion control method according to claim 1, further comprising:
and when the temperature of the outer machine electric control box is higher than a first preset temperature and lower than or equal to a second preset temperature, controlling the air conditioner to enter an up-frequency mode.
7. The frequency conversion control method according to any one of claims 1 to 6, wherein the obtaining of the temperature of the external unit electronic control box comprises: and after the air conditioner is started and operates for a first preset time, continuously detecting the temperature of the outer machine electric control box within a second preset time.
8. A variable frequency control device, comprising:
the acquisition unit is used for acquiring the temperature of the outer machine electric control box;
and the processing unit is used for controlling the running frequency of the air conditioner according to the temperature of the outer machine electric control box.
9. An air conditioner comprising a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement the variable frequency control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements a variable frequency control method according to any one of claims 1 to 7.
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| CN111878913B (en) | 2022-07-19 |
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