CN105276753A - Variable-frequency air conditioner and control method and device for outdoor unit of variable-frequency air conditioner - Google Patents

Variable-frequency air conditioner and control method and device for outdoor unit of variable-frequency air conditioner Download PDF

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Publication number
CN105276753A
CN105276753A CN201410312852.4A CN201410312852A CN105276753A CN 105276753 A CN105276753 A CN 105276753A CN 201410312852 A CN201410312852 A CN 201410312852A CN 105276753 A CN105276753 A CN 105276753A
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air conditioner
frequency
conditioner outdoor
outdoor machine
variable air
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CN105276753B (en
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黄粤
王甫敬
周伟坚
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Midea Group Co Ltd
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Midea Group Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

The invention discloses a control method for an outdoor unit of a variable frequency air conditioner. The control method includes the following steps of detecting the environmental noise of the outdoor unit of the variable frequency air conditioner before operation of the outdoor unit of the variable frequency air conditioner, detecting the operating noise of the outdoor unit of the variable frequency air conditioner in real time in the operating process of the outdoor unit of the variable frequency air conditioner, and controlling the outdoor unit of the variable frequency air conditioner according to the operating noise of the outdoor unit of the variable frequency air conditioner when the operating noise of the outdoor unit of the variable frequency air conditioner is higher than the environmental noise or higher than the noise generated when the outdoor unit of the variable frequency air conditioner operates normally. According to the control method for the outdoor unit of the variable frequency air conditioner, the outdoor unit of the variable frequency air conditioner can be effectively monitored and protected when the noise of the outdoor unit of the variable frequency air conditioner is abnormal, so that the reliability and stability of the outdoor unit of the variable frequency air conditioner are improved, and then the influence of noise of the outdoor unit on the life of users is reduced. The invention further discloses a control device for the outdoor unit of the variable frequency air conditioner and the variable frequency air conditioner.

Description

The control method of convertible frequency air-conditioner and frequency-variable air conditioner outdoor machine and control device thereof
Technical field
The present invention relates to technical field of electric appliances, particularly a kind of control method of frequency-variable air conditioner outdoor machine and control device, and there is the convertible frequency air-conditioner of this control device.
Background technology
Existing domestic variable frequency air-conditioner outdoor unit is usually selected to be arranged near outdoor windowsill, and when off-premises station normally runs, the noise decibel value that the compressor of off-premises station and blower fan etc. produce is smaller, can't cause too large negative effect to the life of user.But; frequency-variable air conditioner outdoor machine is before breaking down; often there is the situation such as pipe arrangement vibration, compressor rotation exception, fan stall in advance; cause the noise decibel value of off-premises station increasing; not only have influence on the daily life of user, other electric-controlled parts of convertible frequency air-conditioner finally also may be caused not ear a heavy burden, lost efficacy the failure risks such as shutdown.If carry out real-time protecting control not in time, the noise problem of client can be caused to complain on the one hand, affect the market public praise of convertible frequency air-conditioner brand, also can bring the burden of each side on the other hand to manufacturer, such as, reprocess cost growth etc. problem.
Summary of the invention
Object of the present invention is intended to solve above-mentioned technical problem at least to a certain extent.
For this reason; one object of the present invention is the control method proposing a kind of frequency-variable air conditioner outdoor machine; this control method can when frequency-variable air conditioner outdoor machine noise be abnormal; carry out effective monitoring and protection; improve the reliability and stability of frequency-variable air conditioner outdoor machine, and then can reduce because off-premises station noise to be lived the impact caused on user.
Another object of the present invention is the control device proposing a kind of frequency-variable air conditioner outdoor machine.
Another object of the present invention is to propose a kind of convertible frequency air-conditioner.
For achieving the above object, an aspect of of the present present invention embodiment proposes a kind of control method of frequency-variable air conditioner outdoor machine, and this control method comprises the following steps: the environmental noise detecting described frequency-variable air conditioner outdoor machine before frequency-variable air conditioner outdoor machine runs; The operation noise of described frequency-variable air conditioner outdoor machine is detected in real time when described frequency-variable air conditioner outdoor machine runs; And when the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than the noise produced when described frequency-variable air conditioner outdoor machine normally runs, the operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine.
According to the control method of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention, by detecting the operation noise of frequency-variable air conditioner outdoor machine in real time, and when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, starting protection controlling functions, and then according to the operation noise of frequency-variable air conditioner outdoor machine, frequency-variable air conditioner outdoor machine is controlled, effective monitoring and protection can be carried out when frequency-variable air conditioner outdoor machine noise is abnormal, the load of each parts of real-time adjustment, improve the reliability and stability of frequency-variable air conditioner outdoor machine, reduce the impact of user being lived because of the operation noise of frequency-variable air conditioner outdoor machine.
Wherein, when the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than noise when described frequency-variable air conditioner outdoor machine normally runs, operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine, specifically comprise: if the operation noise of described frequency-variable air conditioner outdoor machine is all more than or equal to the first noise threshold in Preset Time, then control described frequency-variable air conditioner outdoor machine out of service.
Further, if the operation noise of described frequency-variable air conditioner outdoor machine is all less than described first noise threshold and is more than or equal to the second noise threshold in described Preset Time, then control the load reduction rotating speed of described frequency-variable air conditioner outdoor machine, wherein, described second noise threshold is less than described first noise threshold.
Further, if the operation noise of described frequency-variable air conditioner outdoor machine is all less than described second noise threshold and is more than or equal to the 3rd noise threshold in described Preset Time, the rotating speed then controlling the load of described frequency-variable air conditioner outdoor machine maintains current rotating speed, wherein, described 3rd noise threshold is less than described second noise threshold.
Further, if the operation noise of described frequency-variable air conditioner outdoor machine is all less than described 3rd noise threshold and is more than or equal to the 4th noise threshold in described Preset Time, the rotating speed then controlling the load of described frequency-variable air conditioner outdoor machine raises gradually, wherein, described 4th noise threshold is less than described 3rd noise threshold.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of control device of frequency-variable air conditioner outdoor machine, this control device comprises: noise monitor, for detecting the environmental noise of described frequency-variable air conditioner outdoor machine before frequency-variable air conditioner outdoor machine operation, and detect the operation noise of described frequency-variable air conditioner outdoor machine in real time when described frequency-variable air conditioner outdoor machine runs; Controller, described controller is when the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than the noise produced when described frequency-variable air conditioner outdoor machine normally runs, and the operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine.
According to the control device of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention, the operation noise of frequency-variable air conditioner outdoor machine is detected in real time by noise monitor, and when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, starting protection controlling functions, and then controller controls frequency-variable air conditioner outdoor machine according to the operation noise of frequency-variable air conditioner outdoor machine, effective monitoring and protection can be carried out when frequency-variable air conditioner outdoor machine noise is abnormal, the load of each parts of real-time adjustment, improve the reliability and stability of frequency-variable air conditioner outdoor machine, reduce the impact of user being lived because of the operation noise of frequency-variable air conditioner outdoor machine.
Particularly, described noise measuring implement body comprises: noise measuring circuit, and described noise measuring circuit comprises: noise gathering device, one end ground connection of described noise gathering device; First resistance, one end and first of described first resistance is preset power supply and is connected, and the other end of described first resistance is connected with the other end of described noise gathering device, has first node between the other end of described first resistance and the other end of described noise gathering device; Amplifying circuit, the input of described amplifying circuit is connected with described first node by the first electric capacity; Peak detection circuit, described peak detection circuit comprises: diode, and one end of described diode is connected with the output of described amplifying circuit by the second electric capacity; 3rd electric capacity and the second resistance, one end ground connection of described 3rd electric capacity, the other end of described 3rd electric capacity is connected with the other end of described diode, one end ground connection of described second resistance, and the other end of described second resistance is connected with the other end of described diode; Pressure/frequency converter circuit, the input of described pressure/frequency converter circuit is connected with the other end of described diode; Output circuit, described output circuit comprises: triode, and the base stage of described triode is connected with the output of described pressure/frequency converter circuit by the 3rd resistance, has Section Point, the grounded emitter of described triode between described triode and described 3rd resistance; The colelctor electrode of described triode is connected with described controller; 4th resistance, one end ground connection of described 4th resistance, the other end of described 4th resistance is connected with described Section Point; 5th resistance, one end and second of described 5th resistance is preset power supply and is connected, the other end of described 5th resistance is connected with the colelctor electrode of described triode, has the 3rd node between described 5th resistance and the colelctor electrode of described triode, is connected with described controller by described 3rd node.
Further, when described controller is also all more than or equal to the first noise threshold for the operation noise of frequency-variable air conditioner outdoor machine described in Preset Time, control described frequency-variable air conditioner outdoor machine out of service, and when in described Preset Time, the operation noise of described frequency-variable air conditioner outdoor machine is all less than described first noise threshold and is more than or equal to the second noise threshold, control the load reduction rotating speed of described frequency-variable air conditioner outdoor machine, wherein, described second noise threshold is less than described first noise threshold.
Further, when described controller is also all less than described second noise threshold for the operation noise of frequency-variable air conditioner outdoor machine described in described Preset Time and is more than or equal to the 3rd noise threshold, the rotating speed controlling the load of described frequency-variable air conditioner outdoor machine maintains current rotating speed, and when in described Preset Time, the operation noise of described frequency-variable air conditioner outdoor machine is all less than described 3rd noise threshold and is more than or equal to the 4th noise threshold, the rotating speed controlling the load of described frequency-variable air conditioner outdoor machine raises gradually, wherein, described 3rd noise threshold is less than described second noise threshold, described 4th noise threshold is less than described 3rd noise threshold.
For achieving the above object, another aspect of the invention embodiment proposes a kind of convertible frequency air-conditioner, and this convertible frequency air-conditioner comprises the control device of the frequency-variable air conditioner outdoor machine of above-described embodiment.
According to the convertible frequency air-conditioner of the embodiment of the present invention, by the control device of frequency-variable air conditioner outdoor machine to the detection of the operation noise of off-premises station and corresponding protecting control, run more reliable, stable.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the flow chart of the control method of frequency-variable air conditioner outdoor machine according to an embodiment of the invention;
Fig. 2 is the control interval schematic diagram of the control method of frequency-variable air conditioner outdoor machine according to a specific embodiment of the present invention;
Fig. 3 is the scheme of installation of the control device of frequency-variable air conditioner outdoor machine according to an embodiment of the invention;
Fig. 4 is the circuit diagram of the control device of frequency-variable air conditioner outdoor machine according to another embodiment of the invention;
Fig. 5 is the block diagram of convertible frequency air-conditioner according to an embodiment of the invention.
Reference numeral
The control device 100 of frequency-variable air conditioner outdoor machine, noise monitor 10 and controller 20, noise measuring circuit 101, amplifying circuit 102, peak detection circuit 103, pressure/frequency converter circuit 104 and output circuit 105, noise gathering device M1, first node O1 and Section Point O2.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Describe control method and the control device of the frequency-variable air conditioner outdoor machine proposed according to the embodiment of the present invention with reference to the accompanying drawings, and there is the convertible frequency air-conditioner of this control device.
First the control method of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention is described.Fig. 1 is the flow chart of the control method of frequency-variable air conditioner outdoor machine according to an embodiment of the invention.As shown in Figure 1, the control method of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention comprises the following steps:
S1, detected the environmental noise of frequency-variable air conditioner outdoor machine before frequency-variable air conditioner outdoor machine runs.
Such as, frequency-variable air conditioner outdoor machine arranges noise detection device, can noise detection device testing environment noise be passed through.
S2, detects the operation noise of frequency-variable air conditioner outdoor machine in real time when frequency-variable air conditioner outdoor machine runs.
Frequency-variable air conditioner outdoor machine operationally; certain noise can be produced; if noise is abnormal; frequency-variable air conditioner outdoor machine is operation exception probably; so by detecting operation noise during frequency-variable air conditioner outdoor machine operation; and then the ruuning situation of frequency-variable air conditioner outdoor machine can be judged according to operation noise, corresponding measure is imposed to frequency-variable air conditioner outdoor machine and protects.
S3, when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, the operation noise according to frequency-variable air conditioner outdoor machine controls frequency-variable air conditioner outdoor machine.
Particularly, when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, such as, the decibel value of the external environment noise gathered before frequency-variable air conditioner outdoor machine runs is N1, the decibel value of the operation noise produced when frequency-variable air conditioner outdoor machine runs is N2, if the decibel value N3 of the operation noise of the frequency-variable air conditioner outdoor machine detected in real time, lasting Preset Time meets N3>N1 or N3>N2, then noise protecting control function on, and then according to the operation noise of frequency-variable air conditioner outdoor machine, protecting control is carried out to frequency-variable air conditioner outdoor machine, the rotating speed or the control frequency-variable air conditioner outdoor machine that such as control frequency-variable air conditioner outdoor machine load are out of service.
To be described in detail to carrying out control according to the operation noise of frequency-variable air conditioner outdoor machine to frequency-variable air conditioner outdoor machine in many embodiment: below.
In one embodiment of the invention, if the operation noise of frequency-variable air conditioner outdoor machine is all more than or equal to the first noise threshold in Preset Time, then control frequency-variable air conditioner outdoor machine out of service.In practical application, the decibel value of the operation noise of the frequency-variable air conditioner outdoor machine detected is sent to controller such as Master control chip MCU by such as noise detection device, in such as, control program in MCU, corresponding corresponding noise decibel value i.e. the first noise threshold such as 90 decibels of parameters value such as KTStopNoice, arrange Preset Time parameter such as Time in addition, wherein the span of Time can be 3-5 minute.If the operation noise of frequency-variable air conditioner outdoor machine continues all to be more than or equal to KTStopNoice value in the Time time, the operation noise of the frequency-variable air conditioner outdoor machine such as detected in 4 minutes reaches 90 decibels always, then judge frequency-variable air conditioner outdoor machine fault, need to keep in repair, then control frequency-variable air conditioner outdoor machine out of service, and sending failure code to indoor set, prompting noise is abnormal, needs inspection declaration maintenance process.
Further, in another embodiment of the present invention, if the operation noise of described frequency-variable air conditioner outdoor machine is all less than described first noise threshold and is more than or equal to the second noise threshold in Preset Time, then control the load reduction rotating speed of frequency-variable air conditioner outdoor machine, wherein, the second noise threshold is less than the first noise threshold.In actual applications, the operation level of noise of two parameters i.e. the first noise threshold and the corresponding corresponding frequency-variable air conditioner outdoor machine of the second noise threshold such as KTStopNoice and KTLimitNoice can be set in the parameter list of the control program of MCU, and Preset Time parameter Time.When the operation noise of frequency-variable air conditioner outdoor machine continues all to be more than or equal to KTStopNoice value in the Time time, then control frequency-variable air conditioner outdoor machine out of service, and send failure code to indoor set, prompting noise is abnormal, needs inspection declaration maintenance process.Further, when the operation noise of frequency-variable air conditioner outdoor machine continues all be more than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, the load reduction of speed then controlling frequency-variable air conditioner outdoor machine such as controls compressor, the speed of service of blower fan is lowered, thus reduced the operation noise of frequency-variable air conditioner outdoor machine complete machine.Such as, the operation noise of the frequency-variable air conditioner outdoor machine detected in 4 minutes reaches 90 decibels always, then control frequency-variable air conditioner outdoor machine to stop, or in 4 minutes, run noise be all more than or equal to 70 decibels and be less than 90 decibels and then control compressor and blower fan and carry out fall-back.
Further, if the operation noise of frequency-variable air conditioner outdoor machine is all less than the second noise threshold and is more than or equal to the 3rd noise threshold in Preset Time, the rotating speed then controlling the load of frequency-variable air conditioner outdoor machine maintains current rotating speed, and wherein, the 3rd noise threshold is less than the second noise threshold.In actual applications, three parameters i.e. the first noise threshold, the second noise threshold and the 3rd noise threshold can be set in the parameter list of the control program of MCU, the operation level of noise of the corresponding corresponding frequency-variable air conditioner outdoor machine of such as KTHoldNoice, KTStopNoice and KTLimitNoice, and Preset Time parameter Time.
Wherein, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTHoldNoice in the Time time and be less than KTLimitNoice, the running frequency of compressor, the rotary speed of blower fan that control frequency-variable air conditioner outdoor machine maintain current rotating speed and namely keep rising.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, the running frequency of compressor of control frequency-variable air conditioner outdoor machine, the rotary speed of blower fan carry out downward process, thus reduce the noise of complete machine.Further, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTStopNoice in the Time time, control frequency-variable air conditioner outdoor machine out of service, and send failure code to indoor set, prompting noise is abnormal, needs inspection declaration maintenance process.
Such as, when the operation noise decibel value of frequency-variable air conditioner outdoor machine enter reach 60 decibels time, control the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan keep rising.When run noise decibel value enter reach 70 decibels time, control the running frequency of compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan carry out downwards and process.When run noise decibel value enter reach 90 decibels time, control frequency-variable air conditioner outdoor machine out of service.
Further, if the operation noise of frequency-variable air conditioner outdoor machine is all less than the 3rd noise threshold and is more than or equal to the 4th noise threshold in Preset Time, the rotating speed then controlling the load of frequency-variable air conditioner outdoor machine raises gradually, and wherein, the 4th noise threshold is less than the 3rd noise threshold.In actual applications, three parameters i.e. the first noise threshold, the second noise threshold, the 3rd noise threshold and the 4th noise threshold can be set in the parameter list of the control program of MCU, the operation level of noise of the corresponding corresponding frequency-variable air conditioner outdoor machine of such as KTSlowUpNoice, KTHoldNoice, KTStopNoice and KTLimitNoice, and Preset Time parameter Time.
Wherein, as Fig. 2 be the control interval schematic diagram of control method of frequency-variable air conditioner outdoor machine according to a specific embodiment of the present invention.As shown in Figure 2, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTSlowUpNoice in the Time time and be less than KTHoldNoice, the rotating speed of load controlling frequency-variable air conditioner outdoor machine slowly rises gradually, such as, control the running frequency of compressor, the rotary speed of blower fan enters an elevated areas at a slow speed.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTHoldNoice value in the Time time, the running frequency of compressor of outdoor unit, the rotary speed of blower fan keep rising, and as shown in Figure 2, enter retaining zone.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, the running frequency of compressor of control frequency-variable air conditioner outdoor machine, the rotary speed of blower fan carry out downward process, namely enter as shown in Figure 2 and lower region, thus reduce the noise of complete machine.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTStopNoice value in the Time time; control frequency-variable air conditioner outdoor machine is out of service; namely enter as shown in Figure 2 and shut down region; and send failure code to indoor set; prompting noise is abnormal, should inspection declaration maintenance process.
Such as, when the operation noise decibel value of frequency-variable air conditioner outdoor machine enter reach 50 decibels time, control the running frequency of compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan enter elevated areas at a slow speed.When run noise decibel value enter reach 60 decibels time, control the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan keep rising.When run noise decibel value enter reach 70 decibels time, control the running frequency of compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan carry out downwards and process.When run noise decibel value enter reach 90 decibels time, control frequency-variable air conditioner outdoor machine out of service.
In sum, according to the control method of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention, by detecting the operation noise of frequency-variable air conditioner outdoor machine in real time, and when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, starting protection controlling functions, and then according to the operation noise of frequency-variable air conditioner outdoor machine, frequency-variable air conditioner outdoor machine is controlled, effective monitoring and protection can be carried out when frequency-variable air conditioner outdoor machine noise is abnormal, the load of each parts of real-time adjustment, improve the reliability and stability of frequency-variable air conditioner outdoor machine, reduce the impact of user being lived because of the operation noise of frequency-variable air conditioner outdoor machine.
Below the control device of the frequency-variable air conditioner outdoor machine to the present invention's another aspect embodiment is described.
Fig. 3 is the scheme of installation of the control device of frequency-variable air conditioner outdoor machine according to a specific embodiment of the present invention.The control device 100 of frequency-variable air conditioner outdoor machine can be arranged on frequency-variable air conditioner outdoor machine, and control device 100 is electricly connected by connecting line group and frequency-variable air conditioner outdoor machine, forms Data Detection side, transmission and control treatment.
Fig. 4 is the schematic diagram of the control device of frequency-variable air conditioner outdoor machine according to an embodiment of the invention.As shown in Figure 4, the control device 100 of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention comprises noise monitor 10 and controller 20.
Wherein, noise monitor 10 for detecting the environmental noise of frequency-variable air conditioner outdoor machine before frequency-variable air conditioner outdoor machine operation, and detects the operation noise of frequency-variable air conditioner outdoor machine in real time when frequency-variable air conditioner outdoor machine runs.Frequency-variable air conditioner outdoor machine operationally; certain noise can be produced; if noise is abnormal; frequency-variable air conditioner outdoor machine is operation exception probably; so detect operation noise when frequency-variable air conditioner outdoor machine runs by noise monitor 10; and then the ruuning situation of frequency-variable air conditioner outdoor machine can be judged according to operation noise, corresponding measure is imposed to frequency-variable air conditioner outdoor machine and protects.
Controller 20 is when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, and the operation noise according to frequency-variable air conditioner outdoor machine controls frequency-variable air conditioner outdoor machine.Such as, before frequency-variable air conditioner outdoor machine runs, the decibel value of the external environment noise that noise monitor 10 gathers is N1, the decibel value of the operation noise produced when frequency-variable air conditioner outdoor machine runs is N2, after frequency-variable air conditioner outdoor machine runs, the decibel value N3 of the operation noise of the frequency-variable air conditioner outdoor machine that noise monitor 20 detects in real time, if continue Preset Time to meet N3>N1 or N3>N2, then noise protecting control function on, and then controller 20 carries out protecting control according to the operation noise of frequency-variable air conditioner outdoor machine to frequency-variable air conditioner outdoor machine, the rotating speed or the control frequency-variable air conditioner outdoor machine that such as control the load of frequency-variable air conditioner outdoor machine are out of service.
Particularly, be illustrated in figure 4 the circuit diagram of the control device of frequency-variable air conditioner outdoor machine according to an embodiment of the invention, as shown in Figure 4, noise monitor 10 specifically can comprise noise measuring circuit 101, amplifying circuit 102, peak detection circuit 103, pressure/frequency converter circuit 104 and output circuit 105.
Wherein, noise measuring circuit 101 comprises noise gathering device M1 and the first resistance R1.One end ground connection of noise gathering device M1 such as Electret condenser microphone, one end and first of first resistance R1 is preset power supply such as 12V and is connected, the other end of the first resistance R1 is connected with the other end of noise gathering device M1, has first node O1 between the other end of the first resistance R1 and the other end of noise gathering device M1.Noise measuring circuit 101 gathers the operation noise signal of environmental noise signal and frequency-variable air conditioner outdoor machine by noise gathering device M1, and noise signal is converted to sampled value such as magnitude of voltage or current value.
The input of amplifying circuit 102 is connected with first node O1 by the first electric capacity C1, and the operation noise signal of the frequency-variable air conditioner outdoor machine of collection amplifies by amplifying circuit 102, and wherein the first electric capacity C1 can play the effect of filtering.
One end that peak detection circuit 103 comprises diode D1, the 3rd electric capacity C3 and the second resistance R2, diode D1 is connected with the output of amplifying circuit 102 by the second electric capacity C2; One end ground connection of the 3rd electric capacity C3, the other end of the 3rd electric capacity C3 is connected with the other end of diode D1, one end ground connection of the second resistance R2, and the other end of the second resistance R2 is connected with the other end of diode D2.Wherein, diode D1 is as detecting element, for taking out low-frequency voltage signal from amplitude-modulated wave, in order to obtain useful low-frequency voltage signal, also need by wave filter filtering high fdrequency component, 3rd electric capacity C3 and the second resistance R2 forms low pass filter, thus peak detection circuit 103 output low frequency voltage signal.
The input of pressure/frequency converter circuit 104 is connected with the other end of diode D1, and then by pressure/frequency converter circuit 104, the low-frequency voltage signal that peak detection circuit 103 exports can be converted to frequency signal.
Output circuit 105 comprises triode Q1, the 4th resistance R4 and the 5th resistance R5.Wherein, the base stage b of triode Q1 is connected with the output of pressure/frequency converter circuit 104 by the 3rd resistance R3, has Section Point O2, the emitter E ground connection of triode Q1 between triode Q1 and the 3rd resistance R3; The colelctor electrode C of triode Q1 is connected with controller 20; One end ground connection of the 4th resistance R4, the other end of the 4th resistance R4 is connected with Section Point O2; One end and second of 5th resistance R5 is preset power supply such as 5V and is connected, the other end of the 5th resistance R5 is connected with the colelctor electrode C of triode Q1, there is between 5th resistance R5 and the colelctor electrode C of triode Q1 the 3rd node O3, be connected with controller 20 by the 3rd node O3, and then controller 20 output signal corresponding according to the operation noise with frequency-variable air conditioner outdoor machine controls frequency-variable air conditioner outdoor machine.
Be described in detail carrying out control according to the operation noise of frequency-variable air conditioner outdoor machine to frequency-variable air conditioner outdoor machine to controller 20 in many embodiment: below.
In one embodiment of the invention, the operation noise of frequency-variable air conditioner outdoor machine and the noise threshold preset compare by controller 20, in Preset Time, the operation noise of frequency-variable air conditioner outdoor machine is all more than or equal to the first noise threshold, then to control frequency-variable air conditioner outdoor machine out of service for controller 20.In practical application, such as noise monitor 10 exports the decibel value of the operation noise of the frequency-variable air conditioner outdoor machine detected to controller 20 such as MCU, it should be noted that, in control program in MCU, corresponding corresponding noise decibel value i.e. the first noise threshold such as 90 decibels of parameters value such as KTStopNoice, arrange Preset Time parameter such as Time in addition, wherein the span of Time can be 3-5 minute.If the operation noise of frequency-variable air conditioner outdoor machine continues all to be more than or equal to KTStopNoice value in the Time time, such as in 4 minutes, the operation noise of the frequency-variable air conditioner outdoor machine that noise monitor 10 detects reaches 90 decibels always, then controller 20 judges frequency-variable air conditioner outdoor machine fault, need to keep in repair, then control frequency-variable air conditioner outdoor machine out of service, and sending failure code to indoor set, prompting noise is abnormal, needs inspection declaration maintenance process.
Further, in another embodiment of the present invention, in Preset Time, the operation noise of frequency-variable air conditioner outdoor machine is all less than the first noise threshold and is more than or equal to the second noise threshold, then controller 20 controls the load reduction rotating speed of frequency-variable air conditioner outdoor machine, wherein, the second noise threshold is less than the first noise threshold.In actual applications, the operation level of noise of two parameters i.e. the first noise threshold and the corresponding corresponding frequency-variable air conditioner outdoor machine of the second noise threshold such as KTStopNoice and KTLimitNoice can be set in the parameter list of the control program of MCU, and Preset Time parameter Time.When the operation noise of frequency-variable air conditioner outdoor machine continues all to be more than or equal to KTStopNoice value in the Time time, then to control frequency-variable air conditioner outdoor machine out of service for controller 20, and send failure code to indoor set, and prompting noise is abnormal, needs inspection declaration maintenance process.Further, when the operation noise of frequency-variable air conditioner outdoor machine continues all be more than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, the load reduction of speed that then controller 20 controls frequency-variable air conditioner outdoor machine such as controls compressor, the speed of service of blower fan is lowered, thus reduced the operation noise of frequency-variable air conditioner outdoor machine complete machine.Such as, in 4 minutes, the operation noise of the frequency-variable air conditioner outdoor machine that noise monitor 10 detects reaches 90 decibels always, then controller 20 controls frequency-variable air conditioner outdoor machine and stops, or ran in 4 minutes noise be all more than or equal to 70 decibels and be less than 90 decibels then controller 20 control compressor and blower fan carries out fall-back.
Further, if the operation noise of frequency-variable air conditioner outdoor machine is all less than the second noise threshold and is more than or equal to the 3rd noise threshold in Preset Time, the rotating speed that then controller 20 controls the load of frequency-variable air conditioner outdoor machine maintains current rotating speed, wherein, the 3rd noise threshold is less than the second noise threshold.In actual applications, three parameters i.e. the first noise threshold, the second noise threshold and the 3rd noise threshold can be set in the parameter list of the control program of MCU, the operation level of noise of the corresponding corresponding frequency-variable air conditioner outdoor machine of such as KTHoldNoice, KTStopNoice and KTLimitNoice, and Preset Time parameter Time.
Wherein, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTHoldNoice in the Time time and be less than KTLimitNoice, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan maintains current rotating speed and namely keeps rising.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan is carried out downward process, thus reduced the noise of complete machine.Further, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTStopNoice in the Time time, it is out of service that controller 20 controls frequency-variable air conditioner outdoor machine, and send failure code to indoor set, prompting noise is abnormal, needs inspection declaration maintenance process.
Such as, when the operation noise decibel value of frequency-variable air conditioner outdoor machine enter reach 60 decibels time, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan keeps rising.When run noise decibel value enter reach 70 decibels time, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan is carried out downwards and processed.When run noise decibel value enter reach 90 decibels time, it is out of service that controller 20 controls frequency-variable air conditioner outdoor machine.
Further, if the operation noise of frequency-variable air conditioner outdoor machine is all less than the 3rd noise threshold and is more than or equal to the 4th noise threshold in Preset Time, the rotating speed that then controller 20 controls the load of frequency-variable air conditioner outdoor machine raises gradually, and wherein, the 4th noise threshold is less than the 3rd noise threshold.In actual applications, three parameters i.e. the first noise threshold, the second noise threshold, the 3rd noise threshold and the 4th noise threshold can be set in the parameter list of the control program of MCU, the operation level of noise of the corresponding corresponding frequency-variable air conditioner outdoor machine of such as KTSlowUpNoice, KTHoldNoice, KTStopNoice and KTLimitNoice, and Preset Time parameter Time.
Wherein, as Fig. 2 be the control interval schematic diagram of control method of frequency-variable air conditioner outdoor machine according to a specific embodiment of the present invention.As shown in Figure 2, when the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTSlowUpNoice in the Time time and be less than KTHoldNoice, the rotating speed that controller 20 controls the load of frequency-variable air conditioner outdoor machine slowly rises gradually, such as, control the running frequency of compressor, the rotary speed of blower fan enters elevated areas at a slow speed.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTHoldNoice value in the Time time, controller 20 controls the running frequency of compressor of outdoor unit, the rotary speed of blower fan keeps rising, and enters retaining zone as shown in Figure 2.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all be greater than or equal to KTLimitNoice in the Time time and be less than KTStopNoice, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan carries out downward process, namely enter as shown in Figure 2 and lower region, thus reduce the noise of complete machine.When the operation noise decibel value of frequency-variable air conditioner outdoor machine continues all to be greater than or equal to KTStopNoice value in the Time time; it is out of service that controller 20 controls frequency-variable air conditioner outdoor machine; namely enter as shown in Figure 2 and shut down region; and send failure code to indoor set; prompting noise is abnormal, should inspection declaration maintenance process.
Such as, when the operation noise decibel value of frequency-variable air conditioner outdoor machine enter reach 50 decibels time, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan enters elevated areas at a slow speed.When run noise decibel value enter reach 60 decibels time, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan keeps rising.When run noise decibel value enter reach 70 decibels time, controller 20 controls the running frequency of the compressor of frequency-variable air conditioner outdoor machine, the rotary speed of blower fan is carried out downwards and processed.When run noise decibel value enter reach 90 decibels time, it is out of service that controller 20 controls frequency-variable air conditioner outdoor machine.
According to the control device of the frequency-variable air conditioner outdoor machine of the embodiment of the present invention, the operation noise of frequency-variable air conditioner outdoor machine is detected in real time by noise monitor, and when the operation noise of frequency-variable air conditioner outdoor machine is greater than environmental noise or be greater than the noise produced when frequency-variable air conditioner outdoor machine normally runs, starting protection controlling functions, and then controller controls frequency-variable air conditioner outdoor machine according to the operation noise of frequency-variable air conditioner outdoor machine, effective monitoring and protection can be carried out when frequency-variable air conditioner outdoor machine noise is abnormal, the load of each parts of real-time adjustment, improve the reliability and stability of frequency-variable air conditioner outdoor machine, reduce the impact of user being lived because of the operation noise of frequency-variable air conditioner outdoor machine.
A kind of convertible frequency air-conditioner that embodiment in accordance with a further aspect of the present invention proposes is described with reference to the accompanying drawings.
Fig. 5 is the block diagram of convertible frequency air-conditioner according to an embodiment of the invention.As shown in Figure 5, the convertible frequency air-conditioner 200 of the embodiment of the present invention comprises the control device 100 of the frequency-variable air conditioner outdoor machine of above-described embodiment.
The convertible frequency air-conditioner of the embodiment of the present invention, by the control device of frequency-variable air conditioner outdoor machine to the detection of the operation noise of off-premises station and corresponding protecting control, runs more reliable, stable.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only storage (ROM), erasablely edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.

Claims (10)

1. a control method for frequency-variable air conditioner outdoor machine, is characterized in that, comprises the following steps:
The environmental noise of described frequency-variable air conditioner outdoor machine was detected before frequency-variable air conditioner outdoor machine runs;
The operation noise of described frequency-variable air conditioner outdoor machine is detected in real time when described frequency-variable air conditioner outdoor machine runs; And
When the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than the noise produced when described frequency-variable air conditioner outdoor machine normally runs, the operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine.
2. the control method of frequency-variable air conditioner outdoor machine as claimed in claim 1, it is characterized in that, when the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than noise when described frequency-variable air conditioner outdoor machine normally runs, operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine, specifically comprises:
If the operation noise of described frequency-variable air conditioner outdoor machine is all more than or equal to the first noise threshold in Preset Time, then control described frequency-variable air conditioner outdoor machine out of service.
3. the control method of frequency-variable air conditioner outdoor machine as claimed in claim 2, is characterized in that, also comprise:
If the operation noise of described frequency-variable air conditioner outdoor machine is all less than described first noise threshold and is more than or equal to the second noise threshold in described Preset Time, then control the load reduction rotating speed of described frequency-variable air conditioner outdoor machine, wherein, described second noise threshold is less than described first noise threshold.
4. the control method of frequency-variable air conditioner outdoor machine as claimed in claim 3, is characterized in that, also comprise:
If the operation noise of described frequency-variable air conditioner outdoor machine is all less than described second noise threshold and is more than or equal to the 3rd noise threshold in described Preset Time, the rotating speed then controlling the load of described frequency-variable air conditioner outdoor machine maintains current rotating speed, wherein, described 3rd noise threshold is less than described second noise threshold.
5. the control method of frequency-variable air conditioner outdoor machine as claimed in claim 4, is characterized in that, also comprise:
If the operation noise of described frequency-variable air conditioner outdoor machine is all less than described 3rd noise threshold and is more than or equal to the 4th noise threshold in described Preset Time, the rotating speed then controlling the load of described frequency-variable air conditioner outdoor machine raises gradually, wherein, described 4th noise threshold is less than described 3rd noise threshold.
6. a control device for frequency-variable air conditioner outdoor machine, is characterized in that, comprising:
Noise monitor, for detecting the environmental noise of described frequency-variable air conditioner outdoor machine before frequency-variable air conditioner outdoor machine operation, and detects the operation noise of described frequency-variable air conditioner outdoor machine in real time when described frequency-variable air conditioner outdoor machine runs;
Controller, described controller is when the operation noise of described frequency-variable air conditioner outdoor machine is greater than described environmental noise or be greater than the noise produced when described frequency-variable air conditioner outdoor machine normally runs, and the operation noise according to described frequency-variable air conditioner outdoor machine controls described frequency-variable air conditioner outdoor machine.
7. the control device of frequency-variable air conditioner outdoor machine as claimed in claim 6, it is characterized in that, described noise measuring implement body comprises:
Noise measuring circuit, described noise measuring circuit comprises:
Noise gathering device, one end ground connection of described noise gathering device;
First resistance, one end and first of described first resistance is preset power supply and is connected, and the other end of described first resistance is connected with the other end of described noise gathering device, has first node between the other end of described first resistance and the other end of described noise gathering device;
Amplifying circuit, the input of described amplifying circuit is connected with described first node by the first electric capacity;
Peak detection circuit, described peak detection circuit comprises:
Diode, one end of described diode is connected with the output of described amplifying circuit by the second electric capacity;
3rd electric capacity and the second resistance, one end ground connection of described 3rd electric capacity, the other end of described 3rd electric capacity is connected with the other end of described diode, one end ground connection of described second resistance, and the other end of described second resistance is connected with the other end of described diode;
Pressure/frequency converter circuit, the input of described pressure/frequency converter circuit is connected with the other end of described diode;
Output circuit, described output circuit comprises:
Triode, the base stage of described triode is connected with the output of described pressure/frequency converter circuit by the 3rd resistance, has Section Point, the grounded emitter of described triode between described triode and described 3rd resistance; The colelctor electrode of described triode is connected with described controller;
4th resistance, one end ground connection of described 4th resistance, the other end of described 4th resistance is connected with described Section Point;
5th resistance, one end and second of described 5th resistance is preset power supply and is connected, the other end of described 5th resistance is connected with the colelctor electrode of described triode, has the 3rd node between described 5th resistance and the colelctor electrode of described triode, is connected with described controller by described 3rd node.
8. the control device of frequency-variable air conditioner outdoor machine as claimed in claim 6, it is characterized in that, when described controller is also all more than or equal to the first noise threshold for the operation noise of frequency-variable air conditioner outdoor machine described in Preset Time, control described frequency-variable air conditioner outdoor machine out of service, and when in described Preset Time, the operation noise of described frequency-variable air conditioner outdoor machine is all less than described first noise threshold and is more than or equal to the second noise threshold, control the load reduction rotating speed of described frequency-variable air conditioner outdoor machine, wherein, described second noise threshold is less than described first noise threshold.
9. the control device of frequency-variable air conditioner outdoor machine as claimed in claim 8, it is characterized in that, when described controller is also all less than described second noise threshold for the operation noise of frequency-variable air conditioner outdoor machine described in described Preset Time and is more than or equal to the 3rd noise threshold, the rotating speed controlling the load of described frequency-variable air conditioner outdoor machine maintains current rotating speed, and when in described Preset Time, the operation noise of described frequency-variable air conditioner outdoor machine is all less than described 3rd noise threshold and is more than or equal to the 4th noise threshold, the rotating speed controlling the load of described frequency-variable air conditioner outdoor machine raises gradually, wherein, described 3rd noise threshold is less than described second noise threshold, described 4th noise threshold is less than described 3rd noise threshold.
10. a convertible frequency air-conditioner, is characterized in that, comprises the control device of the frequency-variable air conditioner outdoor machine as described in any one of claim 6-9.
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