CN109915990B - Method and device for controlling fan and air conditioning system - Google Patents
Method and device for controlling fan and air conditioning system Download PDFInfo
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- CN109915990B CN109915990B CN201910133937.9A CN201910133937A CN109915990B CN 109915990 B CN109915990 B CN 109915990B CN 201910133937 A CN201910133937 A CN 201910133937A CN 109915990 B CN109915990 B CN 109915990B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention discloses a method and a device for controlling a fan and an air conditioning system. Wherein, the method comprises the following steps: acquiring an actual system pressure value of the air conditioning system; determining a target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system; determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor; and controlling the fan to operate according to the actual operating frequency. The invention solves the technical problem of beat vibration noise when the operating frequency of the fan is controlled to change along with the pressure of the system.
Description
Technical Field
The invention relates to the field of household appliance control, in particular to a method and a device for controlling a fan and an air conditioning system.
Background
The multi-split air conditioning system has the advantages of high operation energy efficiency and high seasonal energy efficiency, and is widely applied to small and medium-sized buildings. At present, the fan of the side air-out multi-split air conditioning system is mainly controlled in the following two ways:
the first control mode takes the reliability of the unit into consideration and controls the high pressure of the system within a reasonable range. The control mode mainly adjusts the system pressure by increasing and decreasing the frequency of the compressor, the control of the fan is simpler, and the change of the running frequency of the fan is small. But the control method has lower control precision, poor comfort of the unit and large energy consumption. In this regard, a second approach has been developed.
On the premise of ensuring the reliability of the unit, in order to improve the pressure control precision and the energy efficiency of the unit, the second control mode controls the running frequency of the fan to be accurately adjusted according to the change of the system pressure so as to achieve the purpose of optimal energy efficiency.
In the first control mode, because the fan operates stably and the compressor increases and decreases the frequency, the probability of beat vibration sound is not high; although the second control mode has high control precision and high unit energy efficiency, the fan is controlled more complexly, the running frequency of the fan changes along with the change of the system pressure, and the fan frequency changes faster, so that the probability that the running frequency of the fan is close to that of the compressor is higher, and the beat vibration noise is more serious.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling a fan and an air conditioning system, which at least solve the technical problem of beat vibration noise when the operating frequency of the fan is controlled to change along with the pressure of the system.
According to an aspect of an embodiment of the present invention, there is provided a method of controlling a fan, including: acquiring an actual system pressure value of the air conditioning system; determining a target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system; determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor; and controlling the fan to operate according to the actual operating frequency.
Further, the method for controlling the fan further comprises the following steps: acquiring the operating frequency and the ambient temperature of a compressor; and determining a target system pressure value of the air conditioning system according to the operating frequency of the compressor and the ambient temperature.
Further, the method for controlling the fan further comprises the following steps: acquiring the current operating frequency of the fan; calculating the difference value between the actual system pressure value and the target system pressure value; and calculating to obtain the target operating frequency of the fan according to the current operating frequency and the difference value.
Further, the method for controlling the fan further comprises the following steps: under the condition that the operating frequency of the compressor is greater than the preset frequency, whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of the following preset conditions is detected: twice the target operating frequency of the fan is less than the difference between the operating frequency of the compressor and the first frequency; or, twice the target operating frequency of the fan is greater than the sum of the operating frequency of the compressor and the first frequency; and under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan.
Further, the method for controlling the fan further comprises the following steps: under the condition that the operating frequency of the compressor is greater than the preset frequency, if two times of the target operating frequency of the fan is greater than or equal to the difference value between the operating frequency of the compressor and the first frequency and is less than the operating frequency of the compressor, determining that two times of the actual operating frequency of the fan is the difference value between the operating frequency of the compressor and the second frequency, wherein the first frequency is less than the second frequency.
Further, the method for controlling the fan further comprises the following steps: under the condition that the operating frequency of the compressor is greater than the preset frequency, if two times of the target operating frequency of the fan is greater than or equal to the operating frequency of the compressor and less than or equal to the sum of the operating frequency of the compressor and a first frequency, determining that two times of the actual operating frequency of the fan is the sum of the operating frequency of the compressor and a second frequency, wherein the first frequency is less than the second frequency.
Further, the method for controlling the fan further comprises the following steps: under the condition that the operating frequency of the compressor is less than or equal to the preset frequency, whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of the following preset conditions is detected: the target operation frequency of the fan is smaller than the difference value between the operation frequency of the compressor and the first frequency; or the target operation frequency of the fan is greater than the sum of the operation frequency of the compressor and the first frequency; and under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan.
Further, the method for controlling the fan further comprises the following steps: under the condition that the operating frequency of the compressor is less than or equal to the preset frequency, if the target operating frequency of the fan is greater than or equal to the difference value between the operating frequency of the compressor and the first frequency and is less than or equal to the sum of the operating frequency of the compressor and the first frequency, the actual operating frequency of the fan is determined to be the difference value between the operating frequency of the compressor and the second frequency, wherein the first frequency is less than the second frequency.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for controlling a fan, including: the acquisition module is used for acquiring an actual system pressure value of the air conditioning system; the first determining module is used for determining the target operating frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system; the second determining module is used for determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor; and the control module is used for controlling the fan to operate according to the actual operating frequency.
According to another aspect of the embodiments of the present invention, there is also provided an air conditioning system including: a fan and a compressor; the detection equipment is used for detecting the actual system pressure value of the air conditioning system and the running frequency of the compressor; and the processor is used for determining the target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, then determining the actual operation frequency of the fan according to the target operation frequency of the fan and the operation frequency of the compressor, and controlling the fan to operate according to the actual operation frequency.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, a device in which the storage medium is controlled executes a method of controlling a fan.
According to another aspect of the embodiment of the present invention, there is also provided a processor for running a program, where the program executes a method for controlling a fan.
In the embodiment of the invention, a mode of determining the actual operation frequency of the fan according to the system pressure of the fan and the operation frequency of the compressor is adopted, after the actual system pressure value of the air-conditioning system is obtained, the target operation frequency of the fan is determined according to the actual system pressure value and the target system pressure value of the air-conditioning system, the actual operation frequency of the fan is determined according to the target operation frequency of the fan and the operation frequency of the compressor, and the fan is controlled to operate according to the actual operation frequency.
In the process, the operating frequency point of the resonance of the fan and the compressor is shielded by detecting the operating frequency of the compressor, so that the generation of beat vibration noise is avoided, the problem of optimizing the beat vibration noise of the side-air-out multi-connected outdoor unit is solved, the technical effect of improving the noise sound quality of the side-air-out multi-connected outdoor unit is realized, and the technical problem of beat vibration noise when the operating frequency of the fan is controlled to change along with the pressure of a system is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic illustration of a beat waveform according to the prior art;
FIG. 2 is a flow chart of a method of controlling a wind turbine according to an embodiment of the present invention; and
fig. 3 is a schematic structural diagram of a device for controlling a fan according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, some terms or terms appearing in the description of the embodiments of the present application are applicable to the following explanations:
the beat vibration phenomenon is a phenomenon that when excitation amplitudes and frequencies of two sound sources are close to each other, vibration amplitudes of the two sound sources which are superposed and integrally displayed outwards periodically change at a low frequency. The phenomenon is called as beat vibration because the phenomenon has obvious beat attributes of 'strong-weak-strong-weak' and is sensitively perceived by people.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method of controlling a wind turbine, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Before explaining the method for controlling the fan provided by the application, the mechanism of the beat vibration phenomenon is explained first.
Wherein, the two simple harmonic vibration signals are x1And x2，A1And A2Amplitude, omega, of two vibration signals, respectively1And ω2Respectively the angular frequencies of the two vibration signals,
and
respectively two vibration messagesThe initial phase of the signal, the composite signal of the two simple harmonic vibration signals is x, then x satisfies the following equation:
the frequencies of the two simple harmonic vibrations differ less, i.e. ω ═ ω2＝ω1+ Δ ω where Δ ω is small. Then, in the case where Δ ω is small, the resultant signal x may be changed to the following formula:
wherein the content of the first and second substances,
the modified composite signal x is the "beat vibration" and is still in the form of simple harmonic vibration, but the amplitude and phase of the simple harmonic vibration are determined by the above equation, as shown in the schematic diagram of the beat waveform in fig. 1. As can be seen from FIG. 1, the amplitude of the synthesized signal x is at a maximum Amax＝|A1+A2I and the minimum value Amin＝|A1-A2I are varied. Wherein the beat period is
The amplitude of the beat vibration is at two adjacent maximum values AmaxThe time required in between. When the frequency difference Δ ω is smaller, the amplitude a of the "beat vibration" is closer to a constant, and at this time, the "beat vibration" is also closer to simple harmonic vibration; as the frequency difference Δ ω is larger, the amplitude of the "beat vibration" changes faster and becomes more unstable. In addition, in FIG. 1, f1Representing a harmonic vibration signal x1Array frequency of f2Representing a harmonic vibration signal x2The array frequency of (1).
In addition, the side-outlet multi-split air conditioner has two noise sources, namely, a fan (namely, rotation noise) and compressor noise (compressor mechanical noise). When the two noise amplitudes and frequencies are close, beat vibration is generated. According to the conditions and experimental tests for generating the beat vibration, the beat vibration mainly occurs in the following two cases:
in the first case, the fundamental frequency of the fan rotation noise is close to the fundamental frequency of the compressor operation, so that beat vibration is generated; in the second case, the frequency doubling of the fan rotational noise is similar to the fundamental operating frequency of the compressor, thereby generating a beat vibration. Wherein, the beat frequency is the difference between the two frequencies. For example, if the fan operates at 30Hz (i.e., the frequency of fan rotation noise is doubled by the product of the fan operating frequency and the number of blades), and the compressor operating frequency is 61Hz, the frequency of fan rotation noise is resonated with the compressor operating frequency, and the beat vibration noise "strong-weak-strong-weak" beats at 61Hz to 60Hz, which is 1Hz, that is, 1s beat vibration noise. It can be determined through experiments that when the frequency difference is above 3Hz, the beat vibration phenomenon is weak.
Based on the scene, the method for controlling the fan is provided, and the problem of side-outlet multi-split air-conditioner beat vibration noise is optimized while the high energy efficiency of the system is guaranteed. Fig. 2 is a flowchart of a method for controlling a fan according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:
and step S202, acquiring an actual system pressure value of the air conditioning system.
It should be noted that, in this application, the air conditioning system has a detection device, and the detection device may detect an actual system pressure value of the air conditioning system, and optionally, the actual system pressure value is a system high pressure value.
And step S204, determining the target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system.
It should be noted that the fan is an outdoor fan of an air conditioning system. In addition, in order to ensure the unit energy efficiency of the air conditioning system, the high pressure value of the air conditioning system (i.e. the actual system pressure value of the air conditioning system) needs to be controlled within a preset range of the target operating frequency.
Optionally, the air conditioning system may achieve the purpose of reducing the actual system pressure value of the air conditioning system by increasing the operating frequency of the outdoor fan; the purpose of increasing the actual system pressure value of the air conditioning system is achieved by reducing the operating frequency of the outdoor fan. In the process, the air conditioning system can calculate the target operating frequency of the fan of the outdoor unit according to the difference value between the actual system pressure value and the target system pressure value.
And step S206, determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor.
It should be noted that, as can be seen from the formation mechanism of the beat vibration phenomenon, when the difference between the actual operating frequency of the fan and the operating frequency of the compressor is small, that is, the actual operating frequency of the fan is closer to the operating frequency of the compressor, the beat vibration is formed. In order to avoid the beat vibration phenomenon, step S206 detects the operating frequency of the compressor and the target operating frequency of the fan, so that the difference between the actual operating frequency of the fan and the operating frequency of the compressor is relatively large, thereby avoiding the beat vibration phenomenon.
And S208, controlling the fan to operate according to the actual operation frequency.
The frequency points of the beat vibration phenomenon generated between the fan and the compressor can be staggered through the step S206, so that the beat vibration phenomenon can be avoided by controlling the fan to operate according to the actual operating frequency in the step S208, the beat vibration noise problem of the side-air-out multi-split air-conditioner is optimized, and the noise sound quality of the side-air-out multi-split outdoor unit is improved.
Based on the schemes defined in steps S202 to S208, it can be known that, after the actual system pressure value of the air conditioning system is obtained, the target operating frequency of the blower is determined according to the actual system pressure value and the target system pressure value of the air conditioning system by using a method of determining the actual operating frequency of the blower according to the system pressure of the blower and the operating frequency of the compressor, and the actual operating frequency of the blower is determined according to the target operating frequency of the blower and the operating frequency of the compressor, so as to control the blower to operate according to the actual operating frequency.
It is easy to notice that, by detecting the operating frequency of the compressor, the operating frequency point of the resonance between the fan and the compressor is shielded, thereby avoiding the generation of beat vibration noise, achieving the purpose of optimizing the beat vibration noise of the side-air-out multi-connected outdoor unit, realizing the technical effect of improving the noise sound quality of the side-air-out multi-connected outdoor unit, and further solving the technical problem of beat vibration noise when the operating frequency of the fan is controlled to change along with the system pressure.
In an alternative scheme, before determining the target operating frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, the processor of the air conditioning system may obtain the operating frequency and the ambient temperature of the compressor, and determine the target system pressure value of the air conditioning system according to the operating frequency and the ambient temperature of the compressor. Optionally, the air conditioning system has a temperature sensor, and the temperature sensor may detect a dry bulb temperature of an external environment in which the multi-connected outdoor unit operates, so as to obtain an ambient temperature.
After the target system pressure value of the air conditioning system is obtained, the processor of the air conditioning system may calculate a target operating frequency of the fan of the outdoor unit according to a difference between the actual system pressure value and the target system pressure value. Specifically, a processor of the air conditioning system first obtains a current operating frequency of the fan, then calculates a difference value between an actual system pressure value and a target system pressure value, and calculates a target operating frequency of the fan according to the current operating frequency and the difference value.
Optionally, the processor may calculate the target operating frequency of the fan according to the following formula:
target operation frequency of the fan is equal to real-time operation frequency of the fan +2 (actual system pressure value-target system pressure value)
In the above equation, the real-time operating frequency of the wind turbine represents the current operating frequency of the wind turbine.
It should be noted that, in order to avoid beat vibration noise, after the target operating frequency of the fan is obtained, the actual operating frequency of the fan needs to be calculated again. Wherein, the operating frequency of the compressor can be more than 20Hz and less than 120 Hz.
Optionally, under the condition that the operating frequency of the compressor is greater than the preset frequency, the processor detects whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of preset conditions that twice of the target operating frequency of the fan is smaller than the difference between the operating frequency of the compressor and the first frequency; alternatively, twice the target operating frequency of the fan is greater than the sum of the operating frequency of the compressor and the first frequency. And under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan. Namely, whether twice the target operation frequency of the fan meets the following two formulas is detected:
2 < operating frequency of compressor-first frequency of target operating frequency of fan; or
2 > the operating frequency of the compressor + the first frequency;
and if the two times of the target operation frequency of the fan meet any one formula in the above formula, the actual operation frequency of the fan is equal to the target operation frequency of the fan. Wherein the first frequency may be 3 Hz.
Optionally, in a case that the operating frequency of the compressor is greater than the preset frequency, if two times of the target operating frequency of the fan is greater than or equal to a difference between the operating frequency of the compressor and the first frequency and is less than the operating frequency of the compressor, it is determined that two times of the actual operating frequency of the fan is a difference between the operating frequency of the compressor and a second frequency, where the first frequency is less than the second frequency. That is, it is detected whether twice the target operating frequency of the fan satisfies the following formula:
running frequency of compressor-first frequency is less than or equal to 2-target running frequency of fan is less than running frequency of compressor
And if the two times of the target operating frequency of the fan meet the formula, determining that the actual operating frequency of the fan is equal to (the operating frequency of the compressor-the second frequency)/2, performing rounding calculation on the actual operating frequency of the fan, and taking the rounding result as the final actual operating frequency of the fan. Wherein the first frequency may be 3Hz and the second frequency may be 4 Hz.
Optionally, in a case that the operating frequency of the compressor is greater than the preset frequency, if twice of the target operating frequency of the fan is greater than or equal to the operating frequency of the compressor and is less than or equal to the sum of the operating frequency of the compressor and a first frequency, it is determined that twice of the actual operating frequency of the fan is the sum of the operating frequency of the compressor and a second frequency, where the first frequency is less than the second frequency. That is, it is detected whether twice the target operating frequency of the fan satisfies the following formula:
the operating frequency of the compressor is less than or equal to 2 x the target operating frequency of the fan is less than or equal to the operating frequency of the compressor plus the first frequency
And if the two times of the target operating frequency of the fan meet the formula, determining that the actual operating frequency of the fan is equal to (the operating frequency of the compressor + the second frequency)/2, performing rounding calculation on the actual operating frequency of the fan, and taking the rounding result as the final actual operating frequency of the fan. Likewise, the first frequency may be 3Hz and the second frequency may be 4 Hz.
Optionally, under the condition that the operating frequency of the compressor is less than or equal to the preset frequency, whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of the following preset conditions is detected:
the target operation frequency of the fan is smaller than the difference value between the operation frequency of the compressor and the first frequency; alternatively, the first and second electrodes may be,
the target operation frequency of the fan is greater than the sum of the operation frequency of the compressor and the first frequency;
and under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan. Namely, whether the target operation frequency of the fan meets the following two formulas is detected:
target operating frequency of the fan < operating frequency of the compressor-first frequency; or
The target operating frequency of the fan > operating frequency of the compressor + the first frequency;
and if the target operating frequency of the fan meets any one of the formulas, the actual operating frequency of the fan is equal to the target operating frequency of the fan. Wherein the first frequency may be 3 Hz.
Optionally, under the condition that the operating frequency of the compressor is less than or equal to the preset frequency, if the target operating frequency of the fan is greater than or equal to the difference between the operating frequency of the compressor and the first frequency and is less than or equal to the sum of the operating frequency of the compressor and the first frequency, determining that the actual operating frequency of the fan is the difference between the operating frequency of the compressor and the second frequency, wherein the first frequency is less than the second frequency. That is, it is detected whether twice the target operating frequency of the fan satisfies the following formula:
the running frequency of the compressor, namely the first frequency is less than or equal to the target running frequency of the fan and less than or equal to the running frequency of the compressor plus the first frequency
And if the target operating frequency of the fan meets the above formula, determining that the actual operating frequency of the fan is the operating frequency of the compressor, namely the second frequency. Wherein the first frequency may be 3Hz and the second frequency may be 4 Hz.
According to the formula, the scheme provided by the application shields the operating frequency point of the resonance of the fan and the compressor by detecting the operating frequency of the compressor. The difference between the actual operating frequency of the fan and the target operating frequency is at most 4Hz, and the energy efficiency of the air conditioning system is ensured. In addition, according to the method and the device, the frequency points needing to be avoided during the operation of the fan are accurately calculated through the operation state of the multi-split air-conditioning system, the beat vibration noise is optimized, the number of the avoided frequency points is small, and the experimental result shows that the logic has little influence on the unit energy efficiency, namely the scheme provided by the method and the device guarantees the high energy efficiency of the system and optimizes the beat vibration noise of the side-outlet multi-split air-conditioning system.
Example 2
According to an embodiment of the present invention, an embodiment of an apparatus for controlling a fan is provided, where fig. 3 is a schematic structural diagram of the apparatus for controlling a fan according to the embodiment of the present invention, and as shown in fig. 3, the apparatus includes: an acquisition module 301, a first determination module 303, a second determination module 305, and a control module 307.
The obtaining module 301 is configured to obtain an actual system pressure value of the air conditioning system; the first determining module 303 is configured to determine a target operating frequency of the fan according to an actual system pressure value and a target system pressure value of the air conditioning system; a second determining module 305 for determining an actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor; and the control module 307 is used for controlling the fan to operate according to the actual operation frequency.
It should be noted here that the acquiring module 301, the first determining module 303, the second determining module 305, and the control module 307 correspond to steps S202 to S208 of the above embodiment, and the four modules are the same as the corresponding steps in the implementation example and application scenario, but are not limited to the disclosure in the above embodiment.
In an optional aspect, the apparatus for controlling a fan further includes: the device comprises a first obtaining module and a third determining module. The first acquisition module is used for acquiring the operating frequency and the ambient temperature of the compressor; and the third determination module is used for determining a target system pressure value of the air conditioning system according to the running frequency of the compressor and the ambient temperature.
In an alternative, the first determining module includes: the device comprises a second acquisition module, a calculation module and a processing module. The second acquisition module is used for acquiring the current operating frequency of the fan; the calculation module is used for calculating the difference value between the actual system pressure value and the target system pressure value; and the processing module is used for calculating the target operating frequency of the fan according to the current operating frequency and the difference value.
In an alternative, the second determining module includes: the device comprises a first detection module and a fourth determination module. The first detection module is used for detecting whether the target running frequency of the fan and the running frequency of the compressor meet any one of the following preset conditions or not under the condition that the running frequency of the compressor is greater than the preset frequency: twice the target operating frequency of the fan is less than the difference between the operating frequency of the compressor and the first frequency; or, twice the target operating frequency of the fan is greater than the sum of the operating frequency of the compressor and the first frequency; and the fourth determining module is used for determining the actual operating frequency of the fan as the target operating frequency of the fan under the condition that the target operating frequency of the fan and the operating frequency of the compressor meet any preset condition.
In an alternative, the second determining module includes: and a fifth determining module. The fifth determining module is configured to determine, when the operating frequency of the compressor is greater than the preset frequency, that twice the actual operating frequency of the fan is the difference between the operating frequency of the compressor and the second frequency if twice the target operating frequency of the fan is greater than or equal to the difference between the operating frequency of the compressor and the first frequency and is less than the operating frequency of the compressor, where the first frequency is less than the second frequency.
In an alternative, the second determining module includes: and a sixth determining module. The sixth determining module is configured to, if two times of the target operating frequency of the fan are greater than or equal to the operating frequency of the compressor and less than or equal to the sum of the operating frequency of the compressor and the first frequency, determine that two times of the actual operating frequency of the fan are the sum of the operating frequency of the compressor and the second frequency, where the first frequency is less than the second frequency, when the operating frequency of the compressor is greater than the preset frequency.
In an alternative, the second determining module includes: a second detection module and a seventh determination module. The second detection module is used for detecting whether the target running frequency of the fan and the running frequency of the compressor meet any one of the following preset conditions or not under the condition that the running frequency of the compressor is less than or equal to the preset frequency: the target operation frequency of the fan is smaller than the difference value between the operation frequency of the compressor and the first frequency; or the target operation frequency of the fan is greater than the sum of the operation frequency of the compressor and the first frequency; and the seventh determining module is used for determining the actual operating frequency of the fan as the target operating frequency of the fan under the condition that the target operating frequency of the fan and the operating frequency of the compressor meet any preset condition.
In an alternative, the second determining module includes: and an eighth determining module. The eighth determining module is configured to, under the condition that the operating frequency of the compressor is less than or equal to the preset frequency, determine that the actual operating frequency of the fan is the difference between the operating frequency of the compressor and the second frequency if the target operating frequency of the fan is greater than or equal to the difference between the operating frequency of the compressor and the first frequency and is less than or equal to the sum of the operating frequency of the compressor and the first frequency, where the first frequency is less than the second frequency.
Example 3
According to an embodiment of the present invention, there is provided an embodiment of an air conditioning system, wherein the air conditioning system includes: the device comprises a fan, a compressor, a detection device and a processor.
The detection equipment is used for detecting the actual system pressure value of the air conditioning system and the running frequency of the compressor; and the processor is used for determining the target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, then determining the actual operation frequency of the fan according to the target operation frequency of the fan and the operation frequency of the compressor, and controlling the fan to operate according to the actual operation frequency.
As can be seen from the above, after the actual system pressure value of the air conditioning system is obtained, the target operation frequency of the fan is determined according to the actual system pressure value and the target system pressure value of the air conditioning system by using the method of determining the actual operation frequency of the fan according to the system pressure of the fan and the operation frequency of the compressor, and the actual operation frequency of the fan is determined according to the target operation frequency of the fan and the operation frequency of the compressor, so that the fan is controlled to operate according to the actual operation frequency.
It is easy to notice that, by detecting the operating frequency of the compressor, the operating frequency point of the resonance between the fan and the compressor is shielded, thereby avoiding the generation of beat vibration noise, achieving the purpose of optimizing the beat vibration noise of the side-air-out multi-connected outdoor unit, realizing the technical effect of improving the noise sound quality of the side-air-out multi-connected outdoor unit, and further solving the technical problem of beat vibration noise when the operating frequency of the fan is controlled to change along with the system pressure.
In addition, it should be further noted that the processor may execute the method for controlling the fan provided in embodiment 1, and details are already described in embodiment 1 and are not described herein again.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, a device in which the storage medium is controlled performs the method for controlling a fan in embodiment 1.
Example 5
According to another aspect of the embodiment of the present invention, a processor for running a program is further provided, where the program is run to execute the method for controlling a fan in embodiment 1.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of controlling a wind turbine, comprising:
acquiring an actual system pressure value of the air conditioning system;
determining a target operation frequency of a fan according to the actual system pressure value and a target system pressure value of the air conditioning system;
determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor;
controlling the fan to operate according to the actual operating frequency;
before determining the target operating frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, the method further comprises: acquiring the operating frequency and the ambient temperature of the compressor; determining a target system pressure value of the air conditioning system according to the operating frequency of the compressor and the ambient temperature;
determining a target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, and the method comprises the following steps: acquiring the current operating frequency of the fan; calculating a difference value between the actual system pressure value and the target system pressure value; and calculating to obtain the target operating frequency of the fan according to the current operating frequency and the difference value.
2. The method of claim 1, wherein determining the actual operating frequency of the fan based on the target operating frequency of the fan and the operating frequency of the compressor comprises:
under the condition that the operating frequency of the compressor is greater than a preset frequency, whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of the following preset conditions is detected:
twice the target operating frequency of the fan is less than the difference between the operating frequency of the compressor and the first frequency; alternatively, the first and second electrodes may be,
twice the target operating frequency of the fan is greater than the sum of the operating frequency of the compressor and the first frequency;
and under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan.
3. The method of claim 1, wherein determining the actual operating frequency of the fan based on the target operating frequency of the fan and the operating frequency of the compressor comprises:
under the condition that the operating frequency of the compressor is greater than a preset frequency, if two times of the target operating frequency of the fan is greater than or equal to the difference value between the operating frequency of the compressor and a first frequency and is smaller than the operating frequency of the compressor, determining that two times of the actual operating frequency of the fan is the difference value between the operating frequency of the compressor and a second frequency, wherein the first frequency is smaller than the second frequency.
4. The method of claim 1, wherein determining the actual operating frequency of the fan based on the target operating frequency of the fan and the operating frequency of the compressor comprises:
under the condition that the operating frequency of the compressor is greater than a preset frequency, if two times of the target operating frequency of the fan is greater than or equal to the operating frequency of the compressor and less than or equal to the sum of the operating frequency of the compressor and a first frequency, determining that two times of the actual operating frequency of the fan is the sum of the operating frequency of the compressor and a second frequency, wherein the first frequency is less than the second frequency.
5. The method of claim 1, wherein determining the actual operating frequency of the fan based on the target operating frequency of the fan and the operating frequency of the compressor comprises:
under the condition that the operating frequency of the compressor is less than or equal to a preset frequency, whether the target operating frequency of the fan and the operating frequency of the compressor meet any one of the following preset conditions is detected:
the target operation frequency of the fan is smaller than the difference value between the operation frequency of the compressor and the first frequency; alternatively, the first and second electrodes may be,
a target operating frequency of the fan is greater than a sum of the operating frequency of the compressor and the first frequency;
and under the condition that the target operation frequency of the fan and the operation frequency of the compressor meet any one preset condition, determining the actual operation frequency of the fan as the target operation frequency of the fan.
6. The method of claim 1, wherein determining the actual operating frequency of the fan based on the target operating frequency of the fan and the operating frequency of the compressor comprises:
under the condition that the operating frequency of the compressor is less than or equal to a preset frequency, if the target operating frequency of the fan is greater than or equal to the difference between the operating frequency of the compressor and a first frequency and is less than or equal to the sum of the operating frequency of the compressor and the first frequency, determining that the actual operating frequency of the fan is the difference between the operating frequency of the compressor and a second frequency, wherein the first frequency is less than the second frequency.
7. A device for controlling a fan, comprising:
the acquisition module is used for acquiring an actual system pressure value of the air conditioning system;
the first determining module is used for determining the target operating frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system;
the second determining module is used for determining the actual operating frequency of the fan according to the target operating frequency of the fan and the operating frequency of the compressor;
the control module is used for controlling the fan to operate according to the actual operating frequency;
the first acquisition module is used for acquiring the operating frequency and the ambient temperature of the compressor; the third determining module is used for determining a target system pressure value of the air conditioning system according to the running frequency of the compressor and the ambient temperature;
the first determining module includes: the second acquisition module is used for acquiring the current operating frequency of the fan; the calculation module is used for calculating the difference value between the actual system pressure value and the target system pressure value; and the processing module is used for calculating the target operating frequency of the fan according to the current operating frequency and the difference value.
8. An air conditioning system, comprising:
a fan and a compressor;
the detection equipment is used for detecting the actual system pressure value of the air conditioning system and the running frequency of the compressor;
the processor is used for determining a target operation frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system, then determining an actual operation frequency of the fan according to the target operation frequency of the fan and the operation frequency of the compressor, and controlling the fan to operate according to the actual operation frequency;
the processor is further used for acquiring the operating frequency and the ambient temperature of the compressor before determining the target operating frequency of the fan according to the actual system pressure value and the target system pressure value of the air conditioning system; determining a target system pressure value of the air conditioning system according to the operating frequency of the compressor and the ambient temperature;
the processor is further used for acquiring the current operating frequency of the fan; calculating a difference value between the actual system pressure value and the target system pressure value; and calculating to obtain the target operating frequency of the fan according to the current operating frequency and the difference value.
9. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the method for controlling the fan according to any one of claims 1 to 6.
10. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method of controlling a wind turbine according to any one of claims 1 to 6 when running.
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| CN110848932B (en) * | 2019-11-26 | 2021-05-28 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
| CN111141014A (en) * | 2019-12-30 | 2020-05-12 | 宁波奥克斯电气股份有限公司 | Mute mode control method and mute control system |
| CN114459131B (en) * | 2020-11-10 | 2023-01-24 | 广东美的制冷设备有限公司 | Air conditioner control method, device, equipment and storage medium |
| CN113503193B (en) * | 2021-08-10 | 2022-09-02 | 西安热工研究院有限公司 | Frequency modulation operation method for preventing blade resonance of supercritical carbon dioxide axial flow compressor |
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| CN102721120B (en) * | 2012-05-08 | 2015-05-20 | 广东美的制冷设备有限公司 | Method for controlling frequency inverter air conditioner outdoor fan and compressor vibration noise |
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