CN113865049A - Variable frequency air conditioner control method and variable frequency air conditioner - Google Patents
Variable frequency air conditioner control method and variable frequency air conditioner Download PDFInfo
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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
- F24F11/70—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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- 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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- 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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The invention discloses a control method of a variable frequency air conditioner and the variable frequency air conditioner, wherein the method comprises the following steps: when the air conditioner operates, acquiring a real-time operation noise value of the indoor unit; when the real-time operation noise value is larger than the real-time noise threshold value, adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency; the real-time noise threshold value is determined according to a real-time indoor unit rotating speed value; the inverter air conditioner comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to realize the inverter air conditioner control method. The invention can effectively solve the technical problem of noise transmission during the operation of the compressor by a simple and easy means.
Description
Technical Field
The invention belongs to the technical field of air conditioning, particularly relates to a variable frequency air conditioner technology, and more particularly relates to a control method of a variable frequency air conditioner and the variable frequency air conditioner.
Background
The frequency conversion air conditioner for household, commercial use and the like adopts a frequency conversion compressor, the frequency of the frequency conversion compressor is adjustable, the operating frequency range is wide, and the operating frequency range of the compressor can be 20-120hz from the 1P-6P air conditioner user use mode. In order to achieve a good cooling effect or heating effect in hot weather in summer or cold weather in winter, the operating frequency of the compressor needs to be increased. In this case, noise generated from the compressor is also increased by the high frequency operation of the compressor, and the noise generated from the operation of the compressor is transmitted to the indoor side along the pipe while the refrigerant is circulated through the connection pipe of the inner and outer units. With the increase of economic level, the decoration quality of users is improved, the airtight sound insulation effect of rooms is generally good, and the operation sound of the compressor is transmitted to the indoor side and then is often a key pollution source causing indoor noise.
In the prior art, in order to solve the problem that the running sound of the compressor is transmitted to the indoor unit, a plurality of rubber blocks or rubber mud are generally placed at the pipeline of a four-way valve pipeline, a stop valve connecting pipe and the like of the outdoor unit to serve as damping parts so as to buffer the transmission of noise. The placement and quantity of the slabs or mastics is generally determined based on the amplitude of the compressor at different frequencies.
However, the prior art solution has the following disadvantages: (1) the feasibility of damping and buffering at the corresponding amplitude points of the tested multiple compressor frequencies is low due to the spatial structure and the cost of the air conditioner, and the problem of transmission noise is difficult to solve thoroughly; (2) after the damping piece is added, the stress of the pipeline is influenced by the balance weight of the damping piece, so that the pipeline needs to be fully tested for verification, the cost is high, and the realization is complex; (3) after long-term operation, the damping part is easy to fall off, and the effect of buffering noise transmission cannot be continuously achieved; (4) resonance and transmission sound have strong penetrability, and noise is difficult to completely shield through damping and buffering.
Disclosure of Invention
One of the objectives of the present invention is to provide a method for controlling an inverter air conditioner, which effectively solves the technical problem of noise transmission during operation of a compressor by a simple and easy method.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a method for controlling an inverter air conditioner, the method comprising:
when the air conditioner operates, acquiring a real-time operation noise value of the indoor unit;
when the real-time operation noise value is larger than the real-time noise threshold value, adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency;
and the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value.
In one preferred embodiment, adjusting the frequency of the compressor and controlling the compressor to operate according to the adjusted frequency specifically includes:
and adjusting the frequency of the compressor within the allowable working frequency range of the compressor, and controlling the compressor to operate according to the adjusted frequency.
In one preferred embodiment, adjusting the compressor frequency within the allowable compressor operating frequency range specifically includes:
determining a first compressor working frequency range corresponding to the real-time indoor unit rotating speed value according to the real-time indoor unit rotating speed value;
acquiring a real-time environment parameter value, and determining a second compressor working frequency range corresponding to the real-time environment parameter value according to the real-time environment parameter value;
and determining an allowable compressor working frequency range according to the first compressor working frequency range and the second compressor working frequency range, and adjusting the compressor frequency within the allowable compressor working frequency range.
In one preferred embodiment, when the real-time indoor unit rotation speed value is smaller than a set rotation speed value, determining the allowable compressor operating frequency range according to the first compressor operating frequency range and the second compressor operating frequency range specifically includes:
firstly, determining the first compressor working frequency range as the allowable compressor working frequency range;
and if the real-time operation noise values in the working frequency range of the first compressor are all larger than the real-time noise threshold value, determining the working frequency range of the second compressor as the allowable working frequency range of the compressor.
In one preferred embodiment, adjusting the compressor frequency within an allowable compressor operating frequency range, and controlling the compressor to operate according to the adjusted frequency specifically includes:
within the allowable compressor operating frequency range, reducing the frequency value from the initial real-time frequency as an adjusted frequency;
and after the frequency is reduced, if the real-time noise value is still larger than the real-time noise threshold value, increasing the frequency value from the initial real-time frequency to serve as the adjusted frequency.
In one preferred embodiment, the method further comprises:
controlling the compressor to operate according to the adjusted frequency, and acquiring real-time frequency and real-time noise value in real time;
and determining and storing the relation among the rotating speed value, the frequency value and the noise value of the indoor unit according to the rotating speed value, the real-time frequency and the real-time noise value of the indoor unit.
In one preferred embodiment, the method further comprises:
acquiring the relation among the indoor unit rotating speed value, the frequency value and the noise value which belong to the real-time indoor unit rotating speed value as a real-time relation;
adjusting the compressor frequency based on the real-time relationship.
In one preferred embodiment, the method further comprises:
performing spectral analysis on the real-time operating noise value;
determining a compressor noise frequency value according to a frequency spectrum analysis result;
and adjusting the frequency of the compressor according to the noise frequency value of the compressor, so that the adjusted frequency is not equal to the noise frequency value of the compressor.
The invention also provides an inverter air conditioner, which comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor executes the computer program to realize the inverter air conditioner control method.
The invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the computer program realizes the variable frequency air conditioner control method.
Compared with the prior art, the invention has the advantages and positive effects that: according to the control method of the variable frequency air conditioner and the variable frequency air conditioner, when the air conditioner operates, the real-time noise threshold value is determined according to the rotating speed value of the real-time indoor unit, the real-time operation noise value of the indoor unit is compared with the real-time noise threshold value, and if the real-time operation noise value is larger than the real-time noise threshold value, it is judged that the real-time operation noise of the indoor unit exceeds the standard due to the fact that the noise generated by the operation of a compressor is transmitted to the indoor unit; the running noise of the compressor is transmitted to the indoor unit, mainly because the running frequency of the compressor and the air conditioning system generate resonance, the compressor is controlled to run according to the regulated frequency by regulating the frequency of the compressor, so that the compressor avoids running at a common frequency point, and the indoor noise pollution caused by the running noise of the compressor is eliminated or reduced; by adopting the technical scheme of the invention, the vibration damping structure does not need to be additionally arranged, so that the problems of the prior test process which needs to be executed because of the addition of the vibration damping structure and the noise processing failure caused by the falling of the vibration damping structure do not exist, and therefore, the technical scheme of the invention is simple and easy to realize and has high noise reduction reliability.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a control method for an inverter air conditioner according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a control method for an inverter air conditioner according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a control method for inverter air conditioner according to a third embodiment of the present invention;
FIG. 4 is a flow chart of a control method for inverter air conditioner according to a fourth embodiment of the present invention;
FIG. 5 is a flow chart illustrating a control method for an inverter air conditioner according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an embodiment of an air conditioner of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that the technical solutions in the embodiments of the present invention may be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.
Firstly, the technical idea of the invention is briefly explained:
the noise generated by the operation of the indoor unit of the variable frequency air conditioner mainly comes from the operation of an indoor fan, and the noise value generated by the fixed rotating speed of the fan is basically determined. When the variable frequency air conditioner operates, if the rotating speed of the indoor unit is not changed, the operating noise of the indoor unit generally does not exceed the noise threshold corresponding to the rotating speed. If the running noise of the indoor unit exceeds the corresponding noise threshold value when the rotating speed of the indoor unit is unchanged, the noise generated by the running of the compressor is transmitted to the indoor unit, and the running noise of the indoor unit exceeds the standard. The operation noise of the compressor is transmitted to the indoor unit, usually caused by the resonance between the operation frequency of the compressor and an air conditioning system, so that the operation frequency of the compressor is adjusted to avoid the operation at the common frequency point, and the indoor noise pollution caused by the operation transmission noise of the compressor can be eliminated or reduced.
Fig. 1 is a flowchart illustrating a method for controlling an inverter air conditioner according to a first embodiment of the present invention.
As shown in fig. 1, the embodiment performs the inverter air conditioner control using the following process, solving the problem of the transmission of the operation noise of the compressor.
Step 11: and (5) operating the air conditioner to obtain the real-time operation noise value of the indoor unit.
The real-time operation noise value of the indoor unit is a noise value which is acquired in real time according to a set sampling frequency and reflects noise generated by the operation of the indoor unit when the air conditioner operates. In the concrete implementation, a noise detection device can be arranged at the air outlet of the indoor unit, and a noise sensor can be used for acquiring the real-time operation noise value in real time.
Step 12: and judging whether the real-time operation noise value is larger than a real-time noise threshold value. If yes, go to step 13; otherwise, the process of obtaining the real-time operation noise value in the step 11 is continued.
And the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value. Specifically, the corresponding relation between the rotating speed value of the indoor unit and the noise threshold value is preset in the air conditioner, and generally, the corresponding relation is determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like.
When the air conditioner runs at a certain indoor machine rotating speed value, the rotating speed value is a real-time indoor machine rotating speed value, and the noise value corresponding to the real-time indoor machine rotating speed value can be obtained through the preset corresponding relation and is determined as a real-time noise threshold value. And in the running process of the air conditioner, if the rotating speed of the indoor unit is not changed, the real-time noise threshold value is also not changed, and the determination is carried out once. And if the rotating speed of the indoor unit changes, re-determining the real-time noise threshold value.
Step 13: and adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency.
And if the real-time operation noise value of the indoor unit is judged to be larger than the real-time noise threshold value in the step 12, adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency, so that the compressor avoids the operation of the common frequency point, the operation noise of the indoor unit is reduced, and the indoor noise pollution caused by the operation transmission noise of the compressor is eliminated or reduced.
By adopting the control method of the variable frequency air conditioner, only one detection device for acquiring the running noise of the indoor unit needs to be added, and software control is combined, so that the indoor noise pollution caused by the running transmission noise of the compressor can be eliminated or reduced.
Fig. 2 is a flowchart illustrating a control method for an inverter air conditioner according to a second embodiment of the present invention.
As shown in fig. 2, the embodiment performs the inverter air conditioner control using the following process, solving the problem of the transmission of the operation noise of the compressor.
Step 21: and (5) operating the air conditioner to obtain the real-time operation noise value of the indoor unit.
The real-time operation noise value of the indoor unit is a noise value which is acquired in real time according to a set sampling frequency and reflects noise generated by the operation of the indoor unit when the air conditioner operates. In the concrete implementation, a noise detection device can be arranged at the air outlet of the indoor unit, and a noise sensor can be used for acquiring the real-time operation noise value in real time.
Step 22: and judging whether the real-time operation noise value is larger than a real-time noise threshold value. If yes, go to step 23; otherwise, the process of obtaining the real-time running noise value in step 21 is continued.
And the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value. Specifically, the corresponding relation between the rotating speed value of the indoor unit and the noise threshold value is preset in the air conditioner, and generally, the corresponding relation is determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like.
When the air conditioner runs at a certain indoor machine rotating speed value, the rotating speed value is a real-time indoor machine rotating speed value, and the noise value corresponding to the real-time indoor machine rotating speed value can be obtained through the preset corresponding relation and is determined as a real-time noise threshold value. And in the running process of the air conditioner, if the rotating speed of the indoor unit is not changed, the real-time noise threshold value is also not changed, and the determination is carried out once. And if the rotating speed of the indoor unit changes, re-determining the real-time noise threshold value.
If the real-time operation noise value is greater than the real-time noise threshold value, a control for adjusting the compressor frequency is performed, and the compressor frequency is adjusted using the processes of step 23 and step 24.
Step 23: and determining the working frequency range of the first compressor according to the real-time indoor machine rotating speed value, and determining the working frequency range of the second compressor according to the real-time environment parameter value.
The air conditioner is preset with the corresponding relation between the rotating speed value of the indoor unit and the working frequency range of the compressor, and is used for limiting the allowable working frequency of the compressor under a fixed rotating speed value and ensuring the overall performance of the system operation; and the corresponding relation between the environmental parameter value and the working frequency range of the compressor is preset and used for limiting the allowable working frequency of the compressor under the fixed environmental parameter value and ensuring the overall performance of the system operation. Environmental parameters include, but are not limited to, outdoor ambient temperature. The two corresponding relations are determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like, and specific determination means can refer to the prior art and are not described in more detail herein.
And when the air conditioner runs at a certain indoor unit rotating speed value, obtaining a real-time indoor unit rotating speed value, and determining a compressor working frequency range corresponding to the real-time indoor unit rotating speed value according to the corresponding relation between the indoor unit rotating speed value and the compressor working frequency range as a first compressor working frequency range. And simultaneously, acquiring a real-time environment parameter value when the air conditioner operates, and determining a compressor working frequency range corresponding to the real-time environment parameter value according to the corresponding relation between the environment parameter value and the compressor working frequency range to be used as a second compressor working frequency range.
Step 24: and determining an allowable compressor working frequency range according to the first compressor working frequency range and the second compressor working frequency range, adjusting the compressor frequency within the allowable compressor working frequency range, and controlling the compressor to operate according to the adjusted frequency.
There are various implementations that can be made according to the allowable compressor operating frequency ranges determined by the first compressor operating frequency range and the second compressor operating frequency range, and the embodiment is not limited thereto. For example, including but not limited to, taking overlapping frequency ranges from the two frequency ranges as the operating compressor operating frequency range.
By adopting the control method of the embodiment, the compressor avoids the operation of the common frequency point, the operation noise of the indoor unit is reduced, and the indoor noise pollution caused by the operation transmission noise of the compressor is eliminated or reduced. And when the frequency of the compressor is adjusted, the allowable working frequency range of the compressor is determined based on the real-time indoor machine rotating speed value and the real-time environment parameter value, and the frequency is adjusted in the allowable working frequency range of the compressor, so that the overall performances of stability, comfort, safety and the like of the air conditioner can be considered, and the adjustment is quick, strong in pertinence and high in noise control reliability due to the fact that the adjustment is carried out in a certain frequency range.
Fig. 3 is a flowchart illustrating a method for controlling an inverter air conditioner according to a third embodiment of the present invention.
As shown in fig. 3, the embodiment performs the inverter air conditioner control using the following process, solving the problem of the transmission of the operation noise of the compressor.
Step 31: and (5) operating the air conditioner to obtain the real-time operation noise value of the indoor unit.
The real-time operation noise value of the indoor unit is a noise value which is acquired in real time according to a set sampling frequency and reflects noise generated by the operation of the indoor unit when the air conditioner operates. In the concrete implementation, a noise detection device can be arranged at the air outlet of the indoor unit, and a noise sensor can be used for acquiring the real-time operation noise value in real time.
Step 32: and judging whether the real-time operation noise value is larger than a real-time noise threshold value. If yes, go to step 33; otherwise, the process of acquiring the real-time operation noise value in step 31 is continued.
And the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value. Specifically, the corresponding relation between the rotating speed value of the indoor unit and the noise threshold value is preset in the air conditioner, and generally, the corresponding relation is determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like.
When the air conditioner runs at a certain indoor machine rotating speed value, the rotating speed value is a real-time indoor machine rotating speed value, and the noise value corresponding to the real-time indoor machine rotating speed value can be obtained through the preset corresponding relation and is determined as a real-time noise threshold value. And in the running process of the air conditioner, if the rotating speed of the indoor unit is not changed, the real-time noise threshold value is also not changed, and the determination is carried out once. And if the rotating speed of the indoor unit changes, re-determining the real-time noise threshold value.
If the real-time operating noise value is greater than the real-time noise threshold, a control is performed to adjust the compressor frequency, and the process of steps 33-37 is used to adjust the compressor frequency.
Step 33: and judging whether the real-time indoor unit rotating speed value is smaller than the set rotating speed value or not. If yes, go to step 35; otherwise, step 34 is executed.
And setting the rotating speed value as a preset rotating speed value, and reflecting whether to execute mute operation or not. If the running rotating speed of the indoor unit is less than the set rotating speed value, the indoor unit is in mute or ultra-mute running.
Step 34: and determining an allowable compressor working frequency range according to the first compressor working frequency range and the second compressor working frequency range, adjusting the compressor frequency, and controlling the compressor to operate according to the adjusted frequency.
If the step 33 determines that the real-time indoor unit rotating speed value is not less than the set rotating speed value, it indicates that the requirement for the running sound of the air conditioner is not high currently. In this case, the compressor frequency will be adjusted by determining the allowable compressor operating frequency range from the first compressor operating frequency range and the second compressor operating frequency range. The principle and implementation of determining the allowable compressor operating frequency range from the first compressor operating frequency range and the second compressor operating frequency range is described with reference to the embodiment of fig. 2.
Step 35: and determining the first compressor working frequency range as an allowable compressor working frequency range, adjusting the compressor frequency, and controlling the compressor to operate according to the adjusted frequency.
If the real-time indoor unit rotating speed value is judged to be smaller than the set rotating speed value in the step 33, the requirement on the running sound of the air conditioner is high at present, and the air conditioner needs to run in a mute or ultra-mute mode. Under the condition, the operating noise is taken as a main control means, the operating frequency of the compressor is preferentially adjusted according to the first operating frequency range of the indoor unit determined by the real-time rotating speed value, and the limitation of the environmental parameter value on the operating frequency of the compressor is not considered temporarily, so that the requirement of a user on the operating noise of the air conditioner is met as much as possible.
Step 36: and judging whether the real-time noise values are all larger than the real-time noise threshold value. If yes, go to step 37; otherwise, the process continues to step 35.
And in the working process of adjusting the working frequency of the compressor according to the working frequency range of the first compressor, the real-time noise value is still obtained in real time and is compared with the real-time noise threshold value. And if the frequency with the real-time noise value not greater than the real-time noise threshold value exists in the first compressor working frequency range, keeping the first compressor working frequency range to adjust the compressor frequency. Otherwise, step 37 will be executed.
Step 37: and determining the working frequency range of the second compressor as an allowable working frequency range of the compressor, adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency.
And if the real-time noise value when the compressor runs at the adjusted compressor frequency within the working frequency range of the first compressor is larger than the real-time noise threshold value, determining the working frequency range of the second compressor as an allowable working frequency range of the compressor, and adjusting the frequency of the compressor.
Fig. 4 is a flowchart illustrating a method for controlling an inverter air conditioner according to a fourth embodiment of the present invention.
As shown in fig. 4, the embodiment performs the inverter air conditioner control using the following process, solving the problem of the transmission of the operation noise of the compressor.
Step 41: and (5) operating the air conditioner to obtain the real-time operation noise value of the indoor unit.
The real-time operation noise value of the indoor unit is a noise value which is acquired in real time according to a set sampling frequency and reflects noise generated by the operation of the indoor unit when the air conditioner operates. In the concrete implementation, a noise detection device can be arranged at the air outlet of the indoor unit, and a noise sensor can be used for acquiring the real-time operation noise value in real time.
Step 42: and judging whether the real-time operation noise value is larger than a real-time noise threshold value. If yes, go to step 43; otherwise, the process of obtaining the real-time running noise value in step 41 is continued.
And the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value. Specifically, the corresponding relation between the rotating speed value of the indoor unit and the noise threshold value is preset in the air conditioner, and generally, the corresponding relation is determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like.
When the air conditioner runs at a certain indoor machine rotating speed value, the rotating speed value is a real-time indoor machine rotating speed value, and the noise value corresponding to the real-time indoor machine rotating speed value can be obtained through the preset corresponding relation and is determined as a real-time noise threshold value. And in the running process of the air conditioner, if the rotating speed of the indoor unit is not changed, the real-time noise threshold value is also not changed, and the determination is carried out once. And if the rotating speed of the indoor unit changes, re-determining the real-time noise threshold value.
Step 43: and acquiring the relation among the rotating speed value of the indoor unit, the frequency value and the noise value which belong to the real-time rotating speed value of the indoor unit, taking the relation as a real-time relation, and adjusting the frequency of the compressor based on the real-time relation.
If the real-time operating noise value is greater than the real-time noise threshold value, the compressor frequency is adjusted. The specific adjusting method comprises the following steps: and acquiring the relation among the indoor unit rotating speed value, the frequency value and the noise value with the real-time indoor unit rotating speed value to serve as a real-time relation, adjusting the frequency of the compressor according to the real-time relation, and then controlling the compressor to operate according to the adjusted frequency of the compressor.
The relation among the rotating speed value, the frequency value and the noise value of the indoor unit is obtained and stored in real time in the process that the compressor operates according to the adjusted frequency. That is, in the process of adjusting the compressor frequency to eliminate or reduce the indoor noise pollution caused by the noise transmitted by the compressor operation, each time the compressor operates according to the determined adjusted compressor frequency, the real-time noise and the real-time indoor unit rotating speed value are obtained, and a group of data of the indoor unit rotating speed value, the noise value and the frequency value is obtained to serve as the corresponding relation or serve as the data for determining the final corresponding relation. The relation among the rotating speed value, the frequency value and the noise value of the indoor unit can be formed by directly and correspondingly storing a plurality of groups of data, and the relation among the rotating speed value, the frequency value and the noise value of the indoor unit can also be obtained by analyzing and processing the data. Then, when the frequency of the compressor is adjusted next time, the real-time relation among the rotating speed value, the frequency value and the noise value of the indoor unit can be directly determined according to the real-time rotating speed value of the indoor unit, the frequency value corresponding to the low noise value is obtained, and the frequency value is used as the adjusted frequency to control the operation of the compressor.
As a specific example, if the relationship among the historical indoor unit rotation speed value, frequency value, and noise value is not stored yet for the first adjustment, the frequency adjustment may be performed by using a specified adjustment policy.
By adopting the method of the embodiment, the self-recording and self-learning of the frequency adjustment can be realized, and the accuracy and the adjustment speed of the frequency adjustment are improved.
Fig. 5 is a flowchart illustrating a control method for an inverter air conditioner according to a fifth embodiment of the present invention.
As shown in fig. 5, the embodiment performs the inverter air conditioner control using the following process, solving the problem of the transmission of the operation noise of the compressor.
Step 51: and (5) operating the air conditioner to obtain the real-time operation noise value of the indoor unit.
The real-time operation noise value of the indoor unit is a noise value which is acquired in real time according to a set sampling frequency and reflects noise generated by the operation of the indoor unit when the air conditioner operates. In the concrete implementation, a noise detection device can be arranged at the air outlet of the indoor unit, and a noise sensor can be used for acquiring the real-time operation noise value in real time.
Step 52: and judging whether the real-time operation noise value is larger than a real-time noise threshold value. If yes, go to step 53; otherwise, the process of obtaining the real-time running noise value in step 51 is continued.
And the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value. Specifically, the corresponding relation between the rotating speed value of the indoor unit and the noise threshold value is preset in the air conditioner, and generally, the corresponding relation is determined and preset by research personnel through theoretical analysis, simulation test, prototype test and the like.
When the air conditioner runs at a certain indoor machine rotating speed value, the rotating speed value is a real-time indoor machine rotating speed value, and the noise value corresponding to the real-time indoor machine rotating speed value can be obtained through the preset corresponding relation and is determined as a real-time noise threshold value. And in the running process of the air conditioner, if the rotating speed of the indoor unit is not changed, the real-time noise threshold value is also not changed, and the determination is carried out once. And if the rotating speed of the indoor unit changes, re-determining the real-time noise threshold value.
Step 53: performing a spectral analysis on the real-time operating noise values; determining a compressor noise frequency value according to a frequency spectrum analysis result; and adjusting the frequency of the compressor according to the noise frequency value of the compressor, so that the adjusted frequency is not equal to the noise frequency value of the compressor.
In this embodiment, when it is determined in step 52 that the real-time operating noise value is greater than the real-time noise threshold value, a frequency spectrum analysis is first performed on the real-time operating noise value, so as to analyze a compressor frequency value that resonates with the system, and the resonance frequency value is used as the compressor noise frequency value. The compressor noise frequency value is avoided when adjusting the compressor frequency, i.e. the adjusted compressor frequency is not equal to the compressor noise frequency value. Therefore, the working frequency of the compressor for eliminating or reducing indoor noise pollution caused by the running transmission noise of the compressor can be quickly eliminated, the rapidity and pertinence of the frequency adjustment of the compressor are improved, and the reliability of noise regulation is improved.
In some other preferred embodiments, adjusting the compressor frequency within the allowable compressor operating frequency range, and controlling the compressor to operate according to the adjusted frequency specifically adopts the following procedures:
within the allowable working frequency range of the compressor, reducing the frequency value from the initial real-time frequency as the adjusted frequency; after the operation with the reduced frequency, if the real-time noise value is still larger than the real-time noise threshold value, the frequency value is increased from the initial real-time frequency to serve as the adjusted frequency. Generally, the higher the operating frequency of the compressor is, the more noise is generated, so that within the allowable operating frequency range of the compressor, by means of adjusting the frequency value downwards first and then upwards, the rapidity of adjusting the frequency of the compressor can be improved, and the purpose of quickly eliminating or reducing indoor noise pollution caused by the noise transmitted by the operation of the compressor is achieved.
Fig. 6 shows a schematic structural diagram of an embodiment of the inverter air conditioner of the present invention. Specifically, the inverter air conditioner includes a processor 61 and a memory 62, wherein the memory 62 stores a computer program 621, and the computer program 621 can be called by the processor 61 and run on the processor 61. The processor 61 executes the computer program 621 to implement the steps of the above-mentioned control method for the variable frequency air conditioner, and complete the control of the variable frequency air conditioner, thereby achieving the same technical effects as those of the embodiments of each method.
Moreover, the computer program for implementing the steps of the control method of the variable frequency air conditioner can also be stored in a computer readable storage medium, and the computer program in the storage medium is executed by a processor of a computer to complete the control of the variable frequency air conditioner, so that the technical effects same as those of the embodiments of the methods are achieved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A control method for a variable frequency air conditioner is characterized by comprising the following steps:
when the air conditioner operates, acquiring a real-time operation noise value of the indoor unit;
when the real-time operation noise value is larger than the real-time noise threshold value, adjusting the frequency of the compressor, and controlling the compressor to operate according to the adjusted frequency;
and the real-time noise threshold value is determined according to the real-time indoor unit rotating speed value.
2. The method for controlling the inverter air conditioner according to claim 1, wherein the frequency of the compressor is adjusted, and the compressor is controlled to operate according to the adjusted frequency, and specifically comprises the following steps:
and adjusting the frequency of the compressor within the allowable working frequency range of the compressor, and controlling the compressor to operate according to the adjusted frequency.
3. The inverter air conditioner control method according to claim 2, wherein adjusting the compressor frequency within an allowable compressor operating frequency range specifically comprises:
determining a first compressor working frequency range corresponding to the real-time indoor unit rotating speed value according to the real-time indoor unit rotating speed value;
acquiring a real-time environment parameter value, and determining a second compressor working frequency range corresponding to the real-time environment parameter value according to the real-time environment parameter value;
and determining an allowable compressor working frequency range according to the first compressor working frequency range and the second compressor working frequency range, and adjusting the compressor frequency within the allowable compressor working frequency range.
4. The method according to claim 3, wherein when the real-time indoor unit rotation speed value is less than a set rotation speed value, determining the allowable compressor operating frequency range according to the first compressor operating frequency range and the second compressor operating frequency range, specifically comprising:
firstly, determining the first compressor working frequency range as the allowable compressor working frequency range;
and if the real-time operation noise values in the working frequency range of the first compressor are all larger than the real-time noise threshold value, determining the working frequency range of the second compressor as the allowable working frequency range of the compressor.
5. The method for controlling the inverter air conditioner according to claim 2, wherein the frequency of the compressor is adjusted within an allowable operating frequency range of the compressor, and the compressor is controlled to operate according to the adjusted frequency, specifically comprising:
within the allowable compressor operating frequency range, reducing the frequency value from the initial real-time frequency as an adjusted frequency;
and after the frequency is reduced, if the real-time noise value is still larger than the real-time noise threshold value, increasing the frequency value from the initial real-time frequency to serve as the adjusted frequency.
6. The inverter air conditioner control method according to claim 1, further comprising:
controlling the compressor to operate according to the adjusted frequency, and acquiring real-time frequency and real-time noise value in real time;
and determining and storing the relation among the rotating speed value, the frequency value and the noise value of the indoor unit according to the rotating speed value, the real-time frequency and the real-time noise value of the indoor unit.
7. The inverter air conditioner control method according to claim 6, further comprising:
acquiring the relation among the indoor unit rotating speed value, the frequency value and the noise value which belong to the real-time indoor unit rotating speed value as a real-time relation;
adjusting the compressor frequency based on the real-time relationship.
8. The inverter air conditioner control method according to any one of claims 1 to 7, further comprising:
performing spectral analysis on the real-time operating noise value;
determining a compressor noise frequency value according to a frequency spectrum analysis result;
and adjusting the frequency of the compressor according to the noise frequency value of the compressor, so that the adjusted frequency is not equal to the noise frequency value of the compressor.
9. An inverter air conditioner, characterized in that the inverter air conditioner comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, the processor executes the computer program to realize the inverter air conditioner control method of any one of the preceding claims 1 to 8.
10. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for controlling an inverter air conditioner according to any one of claims 1 to 8 is implemented.
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Application publication date: 20211231 |