CN113028579B - Air conditioner frequency control method and device and air conditioner - Google Patents

Air conditioner frequency control method and device and air conditioner Download PDF

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Publication number
CN113028579B
CN113028579B CN202110462327.0A CN202110462327A CN113028579B CN 113028579 B CN113028579 B CN 113028579B CN 202110462327 A CN202110462327 A CN 202110462327A CN 113028579 B CN113028579 B CN 113028579B
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Prior art keywords
frequency
air conditioner
hopping interval
frequency hopping
target
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CN113028579A (en
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黄宁
郑吉存
张光经
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric 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
    • F24F11/30—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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—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
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The embodiment of the application provides an air conditioner frequency control method and device and an air conditioner, and relates to the technical field of air conditioners. In the air conditioner frequency control method according to the embodiment of the present application, a frequency segment in which the air conditioner is likely to vibrate violently is set as a frequency hopping interval, whether the target frequency of the air conditioner is within the frequency hopping interval is determined, and if so, the air conditioner is controlled to operate at a frequency above the upper limit frequency or below the lower limit frequency of the frequency hopping interval. The frequency control method can effectively control the actual operating frequency of the air conditioner not to fall between the upper limit frequency and the lower limit frequency of the frequency hopping interval, thereby avoiding the problems that the air conditioner vibrates violently and the noise is large and the user experience is influenced because the operating frequency falls into the frequency hopping interval. The air conditioner frequency control device and the air conditioner provided by the embodiment of the application can realize the air conditioner frequency control method.

Description

Air conditioner frequency control method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner frequency control method and device and an air conditioner.
Background
Generally, in order to secure the effect of cooling or heating, an air conditioner calculates a target frequency according to a heat load and controls the operation of a compressor at the target frequency. However, the inventor finds that during the operation of the air conditioner, when the compressor operates at certain frequency, the air conditioner generates large vibration, which causes large noise and seriously affects the user experience.
Disclosure of Invention
The invention aims to solve the problem that the noise of the air conditioner in the related art is too large under some frequencies, so that the user experience is influenced.
In order to improve the above problem, in a first aspect, the present invention provides an air conditioner frequency control method, including:
judging whether the current target frequency of the air conditioner is positioned in a frequency hopping interval;
under the condition that the target frequency is positioned in the frequency hopping interval, judging whether the target frequency is smaller than a midpoint value of the frequency hopping interval;
under the condition that the target frequency is less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at the lower limit frequency of the frequency hopping interval or not;
and under the condition that the target frequency is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval.
In the embodiment of the application, a frequency segment in which the air conditioner is prone to severe vibration can be set as the frequency hopping interval, and the actual operation frequency of the air conditioner can be effectively controlled not to fall between the upper limit frequency and the lower limit frequency (but can be an endpoint value) of the frequency hopping interval by the air conditioner frequency control method. Can avoid the air conditioner like this because the target frequency who calculates according to the heat load falls into the frequency hopping interval, and then control the air conditioner with this target frequency operation, lead to vibrating acutely, the noise is great, influences the problem that the user used the experience.
In an alternative embodiment, the air conditioner is controlled to operate at the lower limit frequency of the frequency hopping interval under the condition that the target frequency is within the frequency hopping interval and is less than the midpoint value of the frequency hopping interval;
and under the condition that the target frequency is within the frequency hopping interval and is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval.
In this embodiment, the target frequency is compared with the midpoint value of the frequency hopping interval, if the target frequency is less than the midpoint value, the air conditioner operates at the lower limit frequency of the frequency hopping interval, and if the target frequency is not less than the midpoint value, the air conditioner operates at the upper limit frequency of the frequency hopping interval, so that the actual operating frequency can be ensured to be as close to the target frequency as possible, which is equivalent to ensuring the cooling or heating effect as much as possible on the premise of ensuring that the vibration is not too large.
In an alternative embodiment, the air conditioning frequency control method further includes:
recording one time of frequency fluctuation from the moment that the target frequency is within the frequency hopping interval and not less than the midpoint of the frequency hopping interval, if the target frequency falls below the midpoint of the frequency hopping interval within a first preset time period, and if the target frequency does not fall below the midpoint of the frequency hopping interval within the first preset time period, resetting the frequency fluctuation times;
and judging whether the frequency fluctuation times in the second preset time is greater than the preset times, and if so, limiting the frequency of the air conditioner to be not lower than the upper limit frequency of the frequency hopping interval.
Since the target frequency of the inverter air conditioner may be continuously calculated periodically, the fluctuation of the target frequency needs to be considered. In the embodiment, timing is started when the target frequency is above the midpoint of the frequency hopping interval, and if the target frequency falls below the midpoint within a first preset time period, frequency fluctuation is recorded once; and when the target frequency returns to the midpoint value again, timing is restarted, and if the target frequency falls to the midpoint value again within the first preset time length, the frequency fluctuation is recorded again, namely the frequency fluctuation times are added by 1. And if the target frequency does not fall below the midpoint value within a first preset time length after a certain time, clearing the frequency fluctuation times recorded in the front. By the method, the recent target frequency fluctuation condition can be counted, the more times, the more frequent the recent target frequency fluctuation, the less times, the less recent fluctuation of the air conditioner and the relatively stable target frequency are shown. If the target frequency fluctuates frequently, the frequency of the air conditioner is limited not to be lower than the upper limit frequency of the frequency hopping interval in order to avoid the repeated adjustment of the frequency of the compressor on the two sides of the frequency hopping interval, so that the loss of the compressor is reduced, and meanwhile, the good cooling or heating effect is ensured.
In an optional embodiment, after limiting the frequency of the air conditioner to be not lower than the upper limit frequency of the frequency hopping interval, if an instruction for changing the operation parameters is received, the limitation on the frequency of the air conditioner is removed, and the frequency fluctuation times are cleared; otherwise, the frequency of the air conditioner is limited to be not lower than the upper limit frequency of the frequency hopping interval for a third preset time.
In the present embodiment, the instruction to change the operation parameter input by the user has a higher priority than the air conditioner frequency limit (limit entered because of a large number of frequency fluctuations). Therefore, the limitation of the air conditioner frequency is released after the instruction to change the operation parameter is received. If no instruction for changing the operation parameter is received, the limiting state is maintained for a third preset time period, so that the air conditioner is in a state of relatively stable frequency in a time period.
In alternative embodiments, the operating parameter includes an operating mode, a set temperature, or a wind speed.
In an optional embodiment, the third preset time period is 30-60 min.
In an optional embodiment, the first preset time period is 1-30 min, and/or the second preset time period is 30-90 min.
In an optional embodiment, the timing starting point of the second preset time length is the time when the first frequency fluctuation is recorded;
or the second preset time is within the second preset time before the judgment time.
In this embodiment, the timing manner of the second preset time period may be from the time of recording the first frequency fluctuation, and this timing manner means that the judgment of the frequency of fluctuation is no longer performed after the second preset time period elapses from the starting time. If the second preset time is within the second preset time before the judgment time, the judgment of the frequency times can be ensured even if the time after the first frequency fluctuation recording time is longer, and the judgment result can still reflect the target frequency fluctuation condition of the air conditioner in the near future.
In an alternative embodiment, the air conditioning frequency control method further includes:
and controlling the air conditioner to operate at the target frequency under the condition that the target frequency is not within the frequency hopping interval.
In an alternative embodiment, the air conditioner includes a plurality of hop intervals, and when the air conditioner is controlled to operate at a lower limit frequency of one hop interval or at an upper limit frequency of one hop interval, the frequency of the air conditioner is not in the other hop intervals.
In an alternative embodiment, the frequency hopping interval is determined according to the resonance frequency of the air conditioner and is pre-stored in the air conditioner.
In a second aspect, the present invention provides an air conditioning frequency control apparatus comprising:
the first judgment module is used for judging whether the current target frequency of the air conditioner is positioned in the frequency hopping interval or not;
the second judgment module is used for judging whether the target frequency is less than a midpoint value of the frequency hopping interval under the condition that the target frequency is positioned in the frequency hopping interval;
the execution module is used for controlling the air conditioner to operate at the lower limit frequency which is not higher than the frequency hopping interval under the condition that the target frequency is less than the midpoint value of the frequency hopping interval; and under the condition that the target frequency is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval.
In a third aspect, the present invention provides an air conditioner comprising a controller for executing an executable program to implement the air conditioning frequency control method of any one of the preceding embodiments.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for controlling air conditioning frequency;
FIG. 2 is a flow chart illustrating the control of the frequency of an air conditioner according to frequency fluctuations in an embodiment of the present application;
fig. 3 is a schematic diagram illustrating an air conditioning frequency control apparatus according to an embodiment of the present disclosure;
fig. 4 is a block diagram of an air conditioner according to an embodiment of the present disclosure.
Description of reference numerals: 100-a controller; 200-a bus; 300-a storage medium; 400-air conditioning frequency control means; 410-a first judgment module; 420-a second judgment module; 430-execution module.
Detailed Description
Due to the physical properties of the air conditioner, when the compressor operates at some frequencies, large vibration may be generated, which causes large noise and affects the user experience. One reason for this is that: the related components of the air conditioner, especially, the outdoor unit, have a natural frequency, and when the operating frequency of the compressor, which corresponds to the excitation frequency, is identical or close to the natural frequency of the component, resonance occurs. For example, if the natural frequency of the condenser is 50Hz, the compressor will resonate when operating at a frequency around 50Hz (e.g., 48Hz to 52 Hz). Resonance tends to have a large amplitude, and the loudness of vibration noise is large, so that the user experience is affected, and meanwhile, the device may be damaged due to too large vibration. However, in the related art air conditioner, the target frequency is calculated by the heat load, and then the compressor of the air conditioner is controlled to operate at the target frequency. This can satisfy the demand of the user for the effect of temperature regulation to a great extent, but there is inevitably a risk that the actual operating frequency of the compressor falls within a frequency band in which severe vibration is likely to occur.
In order to solve the problem that an air conditioner may have large vibration in some frequency bands, and particularly to solve the problem that relevant components of the air conditioner may generate resonance with a compressor, embodiments of the present application provide an air conditioner frequency control method, an air conditioner frequency control device and an air conditioner. The problem of severe vibration of the air conditioner is solved by avoiding operating the compressor in certain set intervals.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of an air conditioner frequency control method according to an embodiment of the present disclosure. As shown in fig. 1, an air conditioning frequency control method provided in an embodiment of the present application includes:
and step S100, judging whether the current target frequency of the air conditioner is positioned in the frequency hopping interval.
In the embodiment of the application, the air conditioner is a variable frequency air conditioner capable of automatically adjusting the operating frequency according to a built-in program, and the frequency of the air conditioner is the frequency of the compressor. In this embodiment, the frequency hopping interval may be determined according to a resonant frequency of the air conditioner and pre-stored in the air conditioner, and the compressor is controlled to operate outside the frequency hopping interval (in some embodiments, the frequency hopping interval may include an endpoint value) to avoid resonance. It should be understood that resonance tends to occur in an outer unit of an air conditioner, in which each component has its own corresponding natural frequency, which is determined by the physical properties of the component itself (including size, shape, material, density, etc.), and resonance tends to occur when the operating frequency of the compressor is close to the natural frequency of one component. Of course, not every component is susceptible to resonance, nor is resonance of any one component likely to result in significant noise or damage to the device. The frequency hopping region can therefore be determined by taking into account the natural frequency of the component(s) of interest. An air conditioner may have one hop interval or a plurality of disjoint hop intervals.
The natural frequency of the component may be measured experimentally, and the hop interval determined from the natural frequency may be a larger range than the corresponding natural frequency. For example, if the measured natural frequency of the condenser is 52 to 53Hz, the frequency hopping interval can be set to 50 to 55Hz artificially, and then the frequency hopping interval is stored in the storage medium for calling. This further reduces the risk of resonance caused by the compressor operating frequency being close to the natural frequency of the condenser.
And the target frequency of the compressor, which is an important basis for the operating frequency of the compressor, can be calculated from the heat load. The calculation of the target frequency is often based on satisfying the user's demand for cooling or heating, and the basis for the calculation may be an indoor ambient temperature, an outdoor ambient temperature, a target temperature, a wind speed, and the like. And the target frequency may be periodically calculated after the air conditioner is turned on. For example, the target frequency is calculated every 1-5 min, and the frequency of the compressor is adjusted according to the target frequency.
And step S200, under the condition that the target frequency is positioned in the frequency hopping interval, judging whether the target frequency is smaller than the midpoint value of the frequency hopping interval.
In the embodiment of the present application, if there are multiple hop intervals, the midpoint value of a hop interval refers to the midpoint value of the one hop interval where the target frequency is located, and not the midpoint values of other hop intervals. The midpoint value of the frequency hopping interval can be obtained by averaging the upper limit frequency and the lower limit frequency of the frequency hopping interval.
In case the target frequency is less than the midpoint value of the hop interval, step S300 is performed: and controlling the air conditioner to operate at a lower limit frequency not higher than the frequency hopping interval.
In the case where the target frequency is not less than the midpoint value of the hop interval, step S400 is performed: and controlling the air conditioner to operate at an upper limit frequency not lower than the frequency hopping interval.
Optionally, the air conditioner is controlled to operate at the target frequency when the target frequency is not within the frequency hopping interval. It should be noted that if the air conditioner includes a plurality of hop intervals, when the air conditioner is controlled to operate at a lower limit frequency of not higher than one hop interval or at an upper limit frequency of not lower than one hop interval, the frequency of the air conditioner should not be within other hop intervals.
In the embodiment of the present application, the operation frequency of the compressor is prevented from being in a frequency range in which vibration is easily generated (i.e., a frequency hopping range is set), and therefore, when the target frequency is within the frequency hopping range, the air conditioner is controlled to operate at a frequency outside the frequency hopping range (which may include an endpoint value in some embodiments). In this embodiment, if the target frequency is less than the midpoint value of the hop region, that is, the target frequency is relatively closer to the lower limit frequency (left end point) of the hop region, the air conditioner is controlled to operate at a frequency not higher than the lower limit frequency of the hop region; and if the target frequency is not less than the midpoint value of the frequency hopping interval, namely the target frequency is relatively closer to the upper limit frequency (right end point) of the frequency hopping interval, controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval. Therefore, the operation frequency of the final compressor is not in the frequency hopping interval, and the actual operation frequency is not excessively far away from the target frequency which can meet the requirements of users.
From the foregoing, it can be known that the frequency hopping interval of the air conditioner can be determined according to the natural frequency, and the range size of the frequency hopping interval can be adjusted according to the actual situation. The end point value of the hop interval may therefore be a value that has a certain risk of resonance, or may be a safety value. Then, when the target frequency is within the frequency hopping interval, the actual operating frequency of the air conditioner can be adjusted to an endpoint value (an upper limit frequency or a lower limit frequency) of the frequency hopping interval, and in this case, the endpoint value frequency is required to be a safe frequency value, and resonance is not easy to occur; the actual operation frequency of the air conditioner can be adjusted to be smaller than the lower limit frequency or larger than the upper limit frequency (for example, the lower limit frequency is reduced by 1-3 Hz, or the upper limit frequency is increased by 1-3 Hz), so that the situation that the actual operation frequency is too close to a frequency hopping interval is avoided, and the resonance risk is reduced.
In the embodiment, under the condition that the target frequency is within the frequency hopping interval and is less than the midpoint value of the frequency hopping interval, the air conditioner is controlled to operate at the lower limit frequency of the frequency hopping interval; and controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval under the condition that the target frequency is within the frequency hopping interval and is not less than the midpoint value of the frequency hopping interval.
In this embodiment, the target frequency is compared with the midpoint value of the frequency hopping interval, if the target frequency is less than the midpoint value, the air conditioner operates at the lower limit frequency of the frequency hopping interval, and if the target frequency is not less than the midpoint value, the air conditioner operates at the upper limit frequency of the frequency hopping interval, so that the actual operating frequency can be ensured to be as close to the target frequency as possible, which is equivalent to ensuring the cooling or heating effect as much as possible on the premise of ensuring that the vibration is not too large.
Because the target frequency of the inverter air conditioner can be periodically and continuously calculated, the fluctuation condition of the target frequency is considered, and the air conditioner is controlled to operate according to the frequency fluctuation condition. In this embodiment, the air conditioning frequency control method further includes:
recording one time of frequency fluctuation from the moment that the target frequency is within the frequency hopping interval and not less than the midpoint of the frequency hopping interval, if the target frequency falls below the midpoint of the frequency hopping interval within a first preset time period, and if the target frequency does not fall below the midpoint of the frequency hopping interval within the first preset time period, resetting the frequency fluctuation times;
and judging whether the frequency fluctuation frequency within the second preset time is greater than the preset frequency, and if so, limiting the frequency of the air conditioner to be not lower than the upper limit frequency of the frequency hopping interval.
Fig. 2 is a flowchart illustrating a method for controlling a frequency of an air conditioner according to a frequency fluctuation according to an embodiment of the present application. As shown in fig. 2, in this embodiment, if the target frequency is above the midpoint of the frequency hopping interval, the air conditioner is controlled to operate at a frequency not lower than the upper limit frequency, and timing is started, and if the target frequency falls below the midpoint within a first preset time period, a frequency fluctuation is recorded; and when the target frequency returns to be above the midpoint value again, timing is started again, and if the target frequency falls to be below the midpoint value again within the first preset time length, the frequency fluctuation is recorded again, namely the frequency fluctuation times are added by 1. And if the target frequency does not fall below the midpoint value within a first preset time length after a certain time, clearing the frequency fluctuation times recorded in the front. By the method, the recent target frequency fluctuation condition can be counted, the more times, the more frequent the recent target frequency fluctuation is shown, and the less times, the less recent fluctuation of the air conditioner is shown, and the target frequency is relatively stable. If the target frequency fluctuates frequently, in order to avoid the repeated adjustment of the frequency of the compressor at the two sides of the frequency hopping interval, the frequency of the air conditioner is limited not to be lower than the upper limit frequency of the frequency hopping interval, the loss of the compressor is reduced, and meanwhile, the good refrigerating or heating effect is ensured.
Optionally, when it is determined that the frequency fluctuation frequency within the second preset duration is greater than the preset frequency, the operating frequency of the air conditioner may be limited to the upper limit frequency of the frequency hopping interval. Optionally, the preset times are 2-4 times, and the preset times can be increased according to actual conditions.
Further, after the frequency of the air conditioner is limited not to be lower than the upper limit frequency of the frequency hopping interval, if an instruction for changing the operation parameters is received, the limitation on the frequency of the air conditioner is removed, and the frequency fluctuation times are cleared; and otherwise, limiting the frequency of the air conditioner to be not lower than the upper limit frequency of the frequency hopping interval for a third preset time.
In the present embodiment, the instruction to change the operation parameter input by the user has a higher priority than the air conditioner frequency limit (limit entered because of a large number of frequency fluctuations). Therefore, the limitation of the air conditioner frequency is released after the instruction to change the operation parameter is received. If no instruction for changing the operation parameter is received, the limiting state is maintained for a third preset time period, so that the air conditioner is in a state of relatively stable frequency in a time period. Optionally, the operating parameter comprises an operating mode, a set temperature or a wind speed. And after an instruction for changing the operation parameters is received or the limitation state is kept for a third preset time, clearing the frequency fluctuation times recorded before. It should be appreciated that the cycle shown in fig. 2 may end under some predetermined condition, such as a user shutdown command, or switch to a blowing mode without activating the compressor.
Optionally, the step of determining whether the frequency fluctuation time within the second preset duration is greater than the preset time may be performed when the frequency fluctuation time is increased by 1 each time, or may be performed periodically.
In alternative embodiments, the second predetermined length of time may be timed differently. For example, in the first mode, the timing start point of the second preset time period may be the time when the first frequency fluctuation is recorded. The recording in such a timing manner means that after the second preset time period elapses from the start time, if the frequency fluctuation number is not cleared, the frequency fluctuation number is not judged any more, because the frequency fluctuation number is fixed after the second preset time period elapses from the first frequency fluctuation, other conditions (for example, the target frequency reaches a certain preset value or an instruction input by a user intervenes) are required to clear, and the frequency fluctuation number is restarted. In this case, even though the count of the frequency fluctuation is already large, the frequency fluctuation number within the second preset time period does not meet the requirement, and the limitation on the frequency of the air conditioner may not be started.
In the second manner, the "within the second preset time period" may also be within a second preset time period before the determination time, and the counted frequency fluctuation number is the frequency fluctuation number within the second preset time period before the determination action is executed. By timing in this way, the frequency can be judged even after the time of recording the frequency fluctuation for the first time, and the judgment result can still reflect the target frequency fluctuation condition of the air conditioner in the near term. For example, the preset number of times is 3, if the count of the frequency fluctuation reaches only 3 within a second preset time length after the first frequency fluctuation is recorded, and the 4 th and 5 th frequency fluctuations are outside the second preset time length, according to the first timing mode, the number of times of the frequency fluctuation within the second preset time length is judged to be not more than the preset number of times, and the operation frequency of the air conditioner is not limited; however, if the frequency fluctuation times are counted in a second timing manner, that is, within a second preset time before the judgment time, the frequency fluctuation times of 2 nd to 5 th times may still be within the second preset time (the first frequency fluctuation time is beyond the second preset time), and the frequency fluctuation times within the second preset time reach 4 times, so that the condition of limiting the operation frequency of the air conditioner is met.
It will be appreciated that the above two timing modes with respect to the second preset time period can be selected as required. It should be understood that the second preset time period should be longer than the first preset time period, and the first preset time period, the second preset time period, and the third preset time period may all be set according to actual situations, for example, the first preset time period is 1 to 30min, the second preset time period is 30 to 90min, and the third preset time period is 30 to 60 min.
Fig. 3 is a diagram illustrating an air conditioning frequency control apparatus 400 according to an embodiment of the present disclosure; fig. 4 is a block diagram of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 3 and 4, the air conditioning frequency control device 400 includes:
a first judging module 410, configured to judge whether a current target frequency of the air conditioner is within a frequency hopping interval;
a second determining module 420, configured to determine whether the target frequency is smaller than a midpoint value of the frequency hopping interval when the target frequency is within the frequency hopping interval;
an executing module 430, configured to control the air conditioner to operate at a lower limit frequency not higher than the frequency hopping interval if the target frequency is less than the midpoint value of the frequency hopping interval; and under the condition that the target frequency is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval.
It should be understood that the above modules may be executable computer programs for implementing corresponding functions, which can be stored in the storage medium 300 and called and executed by the controller 100 to implement the corresponding functions. The above-mentioned method for implementing the functions of the modules can refer to the introduction of the air frequency control method.
As shown in fig. 4, the air conditioner of the embodiment of the present application includes a controller 100, and the controller 100 is configured to execute an executable program to perform the air conditioning frequency control method provided in the embodiment of the present application. The air conditioner further includes a storage medium 300 and a bus 200, and the controller 100 is connected to the storage medium 300 through the bus 200.
The controller 100 may be an integrated circuit chip having signal processing capabilities. The controller 100 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The methods, steps, and flowchart disclosed in the embodiments of the present invention may be implemented or performed.
The storage medium 300 is used to store a program, such as an air conditioning frequency control device 400 shown in fig. 3. The air conditioner frequency control device 400 includes at least one software function module which may be stored in the storage medium 300 in the form of software or firmware (firmware) or solidified in an operating system of the air conditioner, and the controller 100 executes the above program to implement the air conditioner frequency control method disclosed in the above embodiment after receiving the execution instruction. The storage medium 300 may be in the form of a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or any other medium capable of storing program codes. In some alternative embodiments, the storage medium 300 may be integrated with the controller 100, for example, the storage medium 300 may be integrated with the controller 100 in a chip.
The embodiment of the present application further provides an air conditioner, which includes a controller 100, where the controller 100 is configured to execute an executable program to implement the air conditioning frequency control method provided in the embodiment of the present application.
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 (12)

1. An air conditioner frequency control method is characterized by comprising the following steps:
judging whether the current target frequency of the air conditioner is positioned in a frequency hopping interval;
under the condition that the target frequency is located in the frequency hopping interval, judging whether the target frequency is smaller than a midpoint value of the frequency hopping interval;
controlling the air conditioner to operate at a lower limit frequency of the frequency hopping interval or less in the case that the target frequency is less than a midpoint value of the frequency hopping interval;
under the condition that the target frequency is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at an upper limit frequency not less than the frequency hopping interval;
the air conditioner frequency control method further includes:
recording one time of frequency fluctuation from the moment that the target frequency is located in the frequency hopping interval and is not smaller than the midpoint of the frequency hopping interval, if the target frequency falls below the midpoint of the frequency hopping interval within a first preset time period, and if the target frequency does not fall below the midpoint of the frequency hopping interval within the first preset time period, resetting the frequency fluctuation times;
and judging whether the frequency fluctuation frequency within a second preset time is greater than a preset frequency, and if so, limiting the frequency of the air conditioner not to be lower than the upper limit frequency of the frequency hopping interval.
2. The air conditioner frequency control method according to claim 1, wherein in case that the target frequency is within the frequency hopping interval and is less than a midpoint value of the frequency hopping interval, controlling the air conditioner to operate at a lower limit frequency of the frequency hopping interval;
and controlling the air conditioner to operate at the upper limit frequency of the frequency hopping interval under the condition that the target frequency is located in the frequency hopping interval and is not less than the midpoint value of the frequency hopping interval.
3. The air conditioner frequency control method according to claim 1, wherein after limiting the frequency of the air conditioner to not lower than the upper limit frequency of the frequency hopping section, if an instruction to change an operation parameter is received, the limitation on the frequency of the air conditioner is removed, and the number of frequency fluctuations is cleared; and otherwise, limiting the frequency of the air conditioner to be not lower than the upper limit frequency of the frequency hopping interval for a third preset time.
4. The air conditioning frequency control method according to claim 3, wherein the operation parameter includes an operation mode, a set temperature, or a wind speed.
5. The air conditioner frequency control method according to claim 3, wherein the third preset time period is 30-60 min.
6. The method for controlling the frequency of an air conditioner according to claim 1, wherein the first preset time period is 1-30 min, and/or the second preset time period is 30-90 min.
7. The air conditioner frequency control method according to claim 1, wherein a timing starting point of the second preset time period is a time when the frequency fluctuation is recorded for the first time;
or the second preset time is within a second preset time before the judgment time.
8. The air conditioning frequency control method according to claim 1, further comprising:
and controlling the air conditioner to operate at the target frequency under the condition that the target frequency is not located in the frequency hopping interval.
9. The method as claimed in any one of claims 1 to 8, wherein the air conditioner includes a plurality of the hop zones, and when the air conditioner is controlled to operate at a lower limit frequency of not higher than one of the hop zones or at an upper limit frequency of not lower than one of the hop zones, the frequency of the air conditioner is not within the other hop zones.
10. The air conditioner frequency control method according to any one of claims 1 to 8, wherein the frequency hopping section is determined according to a resonance frequency of the air conditioner and is pre-stored in the air conditioner.
11. An air conditioning frequency control device, characterized by comprising:
the first judging module (410) is used for judging whether the current target frequency of the air conditioner is positioned in the frequency hopping interval or not;
a second determining module (420) for determining whether the target frequency is smaller than a midpoint value of the hop interval if the target frequency is within the hop interval;
an execution module (430) for controlling the air conditioner to operate at a lower limit frequency not higher than the hop interval if the target frequency is less than a midpoint value of the hop interval; under the condition that the target frequency is not less than the midpoint value of the frequency hopping interval, controlling the air conditioner to operate at an upper limit frequency not less than the frequency hopping interval;
the air conditioning frequency control device is also used for:
recording one-time frequency fluctuation from the time when the target frequency is located in the frequency hopping interval and not less than the midpoint of the frequency hopping interval, if the target frequency falls below the midpoint of the frequency hopping interval within a first preset time length, and if the target frequency does not fall below the midpoint of the frequency hopping interval within the first preset time length, resetting the frequency fluctuation;
and judging whether the frequency fluctuation times in a second preset time period are larger than preset times or not, and if so, limiting the frequency of the air conditioner not to be lower than the upper limit frequency of the frequency hopping interval.
12. An air conditioner, characterized by comprising a controller (100), the controller (100) being configured to execute an executable program to implement the air conditioning frequency control method according to any one of claims 1 to 10.
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Publication number Priority date Publication date Assignee Title
JP2011228773A (en) * 2010-04-15 2011-11-10 Panasonic Corp Notification system
CN111023324A (en) * 2019-12-27 2020-04-17 宁波奥克斯电气股份有限公司 Control method and device for resonance noise and air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011228773A (en) * 2010-04-15 2011-11-10 Panasonic Corp Notification system
CN111023324A (en) * 2019-12-27 2020-04-17 宁波奥克斯电气股份有限公司 Control method and device for resonance noise and air conditioner

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