CN102345916A - Method and system for eliminating frequency resonance for frequency conversion air conditioner - Google Patents
Method and system for eliminating frequency resonance for frequency conversion air conditioner Download PDFInfo
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- CN102345916A CN102345916A CN2011102506086A CN201110250608A CN102345916A CN 102345916 A CN102345916 A CN 102345916A CN 2011102506086 A CN2011102506086 A CN 2011102506086A CN 201110250608 A CN201110250608 A CN 201110250608A CN 102345916 A CN102345916 A CN 102345916A
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Abstract
The invention discloses a method and a system for eliminating frequency resonance for a frequency conversion air conditioner. A velocity sensor and a vibration sensor are used for obtaining the vibration state of the air-conditioning system, and the vibration state of the air-conditioning system is adjusted, since the vibration is detected continuously, the whole air conditioner always works in a closed-loop system, and the air conditioner is always optimized intelligently; with the technology, development cycle of a cooling system and an electric control system is shortened, product development cycle is reduced, and development cost is saved.
Description
Technical field
The present invention relates to a kind of convertible frequency air-conditioner frequency resonance removing method and system, relate in particular to a kind of convertible frequency air-conditioner is eliminated frequency resonance according to the voltage signal of vibrating sensor collection method and system.
Background technology
In the air conditioner industry, no matter be frequency conversion or deciding frequency all exists noise and vibration, secondly Energy Efficiency Ratio was low at that time when control is, it is over half that therefore machine may dwindle service life, also is a noise source simultaneously, directly had influence on our economy and daily life.Divide two big systems in the air-conditioning the inside, a refrigeration system, one is the electric control system; Because vibration problem is often criticized each other; A kind ofly think the motor-driven problem, another kind is thought the refrigeration system pipeline design problem, causes product can't be in an optimum Working at last.
At present when compressor of air conditioner dispatches from the factory; Which resonance point in the parameter of motor, has the clear and definite motor of pointing out has to avoid; Therefore, when writing the motor-driven algorithm, just directly cross this several resonance points in the prior art, allow and avoid these resonance points when driving fully.But prior art has following defective: the power device of Driven Compressor has bigger loss, and heating simultaneously is bigger, makes machine some factors of instability possibly occur, and the power device that causes at last controlling motor damages.
Summary of the invention
The technical problem that the present invention solves is: make up a kind of convertible frequency air-conditioner frequency resonance removing method and system, it is fast to overcome in the prior art consumption of convertible frequency air-conditioner vibration removing method power device, the technical problem of machine fluctuation of service.
Technical scheme of the present invention is: a kind of convertible frequency air-conditioner frequency resonance removing method is provided; Said convertible frequency air-conditioner comprises the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top, receive said vibrating sensor circuit according to the single-chip microcomputer of the voltage signal of the vibration acquisition of compressor, vibrate the digital signal processor of adjustment, said convertible frequency air-conditioner frequency resonance removing method comprises the steps:
Gather vibration signal: said vibrating sensor circuit is according to the voltage signal of the vibration acquisition of compressor;
Vibrate adjustment: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 4.6 volts, and the scope that said digital signal processor belongs to according to the voltage signal of the said vibrating sensor circuit collection of said single-chip microcomputer judgement is adjusted one or more in three kinds of modes of operating frequency of aperture, air conditioner wind speed, compressor of air conditioner of air conditioner electronic expansion valve.
Further technical scheme of the present invention is: said single-chip microcomputer is judged oscillatory type according to scope under the said vibration voltage signal: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 2.5 volts, and the convertible frequency air-conditioner oscillatory type is little shaking; The voltage of gathering when said vibrating sensor circuit is greater than 2.5 volts and during less than 3 volts, and the convertible frequency air-conditioner oscillatory type is to shake; The voltage of gathering when said vibrating sensor circuit is greater than 3.1 volts and during less than 3.5 volts, then convertible frequency air-conditioner generation resonance; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then the blast pipe generation is vibrated; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then the generation of compressor steel body is vibrated.
Further technical scheme of the present invention is: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 2.5 volts, and the convertible frequency air-conditioner oscillatory type is little shaking, and the aperture that reduces electric expansion valve is with the reduction refrigerant flow.
Further technical scheme of the present invention is: the voltage of gathering when said vibrating sensor circuit is greater than 2.5 volts and during less than 3 volts; The convertible frequency air-conditioner oscillatory type is shake; The aperture of adjustment electric expansion valve, the aperture that makes electric expansion valve maintain poised state with running frequency and suppress to vibrate.
Further technical scheme of the present invention is: the voltage of gathering when said vibrating sensor circuit is greater than 3.1 volts and during less than 3.5 volts; Then convertible frequency air-conditioner produces resonance; One or more modes that adopt to change in the aperture of running frequency or electric expansion valve of compressor are regulated, and make the stagger resonant frequency of convertible frequency air-conditioner of the running frequency of compressor.
Further technical scheme of the present invention is: the voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then blast pipe produces vibration, and one or more modes that adopt the aperture of minimizing electric expansion valve perhaps to increase in the wind speed are regulated.
Further technical scheme of the present invention is: the voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts; Then compressor steel body produces vibration, adopts aperture, the reduction frequency that increases electric expansion valve or one or more modes that reduce in the wind speed to regulate.
Further technical scheme of the present invention is: when the voltage of said vibrating sensor circuit collection equals 4.9 volts, and the compressor of air conditioner operation irregularity, single-chip microcomputer sends halt instruction.
Technical scheme of the present invention is: make up a kind of convertible frequency air-conditioner frequency resonance and eliminate system; Comprise the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top; Receive the single-chip microcomputer of vibrating sensor circuit according to the voltage signal of vibration of compressor signals collecting; Vibrate the digital signal processor of adjustment; Said vibrating sensor circuit is gathered the vibration signal of compressor and is transferred vibration signal to voltage signal; Said single-chip microcomputer is sent to digital signal processor after the voltage signal of said vibrating sensor circuit collection is judged, the aperture of the scope adjustment air conditioner electronic expansion valve that the said vibration voltage signal that said digital signal processor is judged according to said single-chip microcomputer belongs to; Air conditioner wind speed; In three kinds of modes of the operating frequency of compressor of air conditioner one or more.
Further technical scheme of the present invention is: said vibrating sensor circuit comprises capacitor C 1, the capacitor C 2 of processor, parallel connection; Resistance R 1 and resistance R 2 series connection backs and capacitor C 1, capacitor C 2 are parallelly connected; The capacitor C 1 of parallel connection, 14 pin and 15 pin of capacitor C 2 one termination processors; 5 pin of another termination processor, 6 pin and 7 pin, the variation in voltage amount Xout of compressor of air conditioner vibration voltage collection terminal output, the voltage acquisition port that Yout connects processor.
Technique effect of the present invention is: make up a kind of convertible frequency air-conditioner frequency resonance removing method and system; Through adopt velocity sensor and vibrating sensor obtain the vibrational state of air-conditioning system; And its vibrational state adjusted; Because of continuously vibration being detected; So complete machine is operated in the system the inside of a closed loop always, so machine is all the time all in the intelligent optimization of quilt; Understand the cycle that shortens refrigeration system and electric-control system exploitation after adopting this technology, product development cycle is shortened, reach the benefit of saving development cost.
Description of drawings
Fig. 1 is a flow chart of the present invention.
Fig. 2 eliminates system for convertible frequency air-conditioner frequency resonance of the present invention.
Fig. 3 is a vibrating sensing circuit connection diagram of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further specified.
Like Fig. 1, Fig. 2, shown in Figure 3; The specific embodiment of the present invention is: make up a kind of convertible frequency air-conditioner frequency resonance removing method; Said convertible frequency air-conditioner comprises the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top, receive said vibrating sensor circuit according to the single-chip microcomputer of the voltage signal of the vibration acquisition of compressor, vibrate the digital signal processor of adjustment, said convertible frequency air-conditioner frequency resonance removing method comprises the steps:
Step 100: gather vibration signal, that is: said vibrating sensor circuit is according to the voltage signal of the vibration acquisition of compressor;
Step 200: vibrate adjustment; That is: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 4.6 volts, and the scope that said digital signal processor belongs to according to the voltage signal of the said vibrating sensor circuit collection of said single-chip microcomputer judgement is adjusted one or more in three kinds of modes of operating frequency of aperture, air conditioner wind speed, compressor of air conditioner of air conditioner electronic expansion valve.
The concrete course of work is following: the single-chip microcomputer power model (not shown) of compressor in three electronics lines are linked in sequence driver respectively, and compressor output U, V is in the W three-phase port; Pass through bridge rectifier; Produce the direct current of 1.41 times of civil powers; And give Switching Power Supply; Make Switching Power Supply produce one road 5V DC voltage; One road 15V DC voltage; One road 12V DC voltage; The 5V DC voltage produces the 3.3V DC voltage again; These power supplys are supplied with the single-chip microcomputer power model respectively, relay, and the 3.3V DC voltage is supplied with digital signal processor. under the driving of compressor because of orderly high-voltage square-wave voltage; Compressor can convert mechanical energy into by electric energy; Mechanical energy can convert kinetic energy into, and cold-producing medium is compressed, and compressor has strong vibration in this process.
The air conditioner includes an inverter compressor installed in the air exhaust pipe at the top side or air vibration sensor circuit, said vibration sensor circuit of the compressor or the air exhaust pipe vibrations generated during operation into a voltage signal, and the microcontroller receives collecting vibration sensor circuit according to the compressor vibration acquisition voltage signal output adjustment signal to the digital signal processor, a digital signal processor via the control branch of the microcontroller, for the adjustment in a digital signal processor, said digital signal processor TMP28023 high-performance 32-bit machine, dedicated to drive the compressor, through the six-way pulse width modulated square wave signal frequency power module inside the three groups IGBT bridge orderly drive the compressor;? should energy and electromagnetic compatibility requirements, circuit to increase the power factor correction circuit, the mains through the zero line and the line of fire of the zero-crossing detection, by a digital signal processor outputs the pulse width modulated square wave signal to drive the IGBT work, so that the boost inductor to the orderly conduct mains input voltage wave waveform on and consistent waves, thereby reducing interference on the power grid and improve energy utilization.
The voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 2.5 volts, and the convertible frequency air-conditioner oscillatory type is little shaking, and the aperture that reduces electric expansion valve is with the reduction refrigerant flow.The aperture of electric expansion valve is 250 degree in when refrigeration, with its aperture step by step reduce to 200 degree, the AD value that detects vibration simultaneously is to change, and has determined whether vibration with this.
The voltage of gathering when said vibrating sensor circuit is greater than 2.5 volts and during less than 3 volts, and the convertible frequency air-conditioner oscillatory type is shake, adjusts the aperture of electric expansion valve, makes aperture and the running frequency of electric expansion valve maintain poised state and suppresses to vibrate.The aperture of electric expansion valve is 280 degree when refrigeration; When the AD value that detects vibration reaches 3V, need to adjust to aperture, when increasing to 320, aperture also has vibration when spending; Then reduce to seek equalization point between following 250 degree of aperture to 280 degree, at once till reaching minimum vibration.
The voltage of gathering when said vibrating sensor circuit is greater than 3.1 volts and during less than 3.5 volts; Then convertible frequency air-conditioner produces resonance; One or more modes that adopt to change in the aperture of running frequency or electric expansion valve of compressor are regulated, and make the stagger resonant frequency of convertible frequency air-conditioner of the running frequency of compressor.Such as: general compressor has 2 to 3 resonance points usually; All can there be such resonance point according to different compression machine and motor; Normally in low frequency; When particularly starting; Very easily on this resonant frequency point, move, when operating in resonance point, have very strong vibration.When the 22HZ, a resonant frequency is arranged like the direct current compressor DA108 of certain air-conditioning, individual resonant frequency is arranged at 26HZ, in the time of near complete machine is running to this frequency more frequently with open big electric expansion valve and handle; When operating in 20HZ, electric expansion valve is reached maximum 480 degree, reduce the complete machine load with this to 21HZ; And digital signal processor pressure at this moment provides 24HZ or a higher frequency operation comes more frequently with this, avoids resonance to bring the vibration of pipeline.In addition, owing to run into when 22HZ moves under the fortuitous event, digital signal processor directly was raised to the long-play that 28HZ avoids this resonance point in 2 seconds.
The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then blast pipe produces vibration, and one or more modes that adopt the aperture of minimizing electric expansion valve perhaps to increase in the wind speed are regulated.Blast pipe appears when compressor operating is more or less freely during at 56HZ because this time electronic valve aperture be made as 260 degree, vibration at this moment has following two two kinds of regulative modes to reduce pipeline vibration usually:
Regulate the aperture of electric expansion valve: the running frequency that is exactly compression was lacked by the time on the 30HZ raising frequency, more or less freelyly overload occurred; Because becoming greatly the liquid that becomes gas-liquid mixed by liquid state, the pressure of cold-producing medium flows into condenser through blast pipe; The efficient of heat exchange this moment also is not optimum state; Therefore need to regulate the aperture of electric expansion valve; At this moment be reduced to the aperture of 300 degree usually by maximum 480 degree, reduce the load of compressor with this;
Increase wind speed: simultaneously wind speed is switched to middling speed wind or high wind by low speed, strengthen the heat-exchange capacity of condenser like this, and it is mobile in pipeline to reduce too much liquid state, suppresses the pipeline vibration that overload causes with this.
The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then compressor steel body produces vibration, adopts the aperture that increases electric expansion valve, one or more modes that the reduction frequency perhaps reduces in the wind speed to regulate.When running into the vibration of steel body generation: with the swollen maximum that reaches of electronic expansion; Frequency is reduced to the 32HZ operation; Wind speed is transferred to low wind.
When the voltage of said vibrating sensor circuit collection equals 4.9 volts, the compressor of air conditioner operation irregularity, single-chip microcomputer sends halt instruction.At this moment, digital signal processor can be quoted the compressor operating fault: open-phase fault; The parameter of electric machine fault that do not match; High pressure or under-voltage fault.Single-chip microcomputer allows DSP quote motor operation exception total failare simultaneously and sends halt instruction.
The present invention makes up a kind of convertible frequency air-conditioner frequency resonance and eliminates system; Comprise the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top; Receive the single-chip microcomputer of vibrating sensor circuit according to the voltage signal of vibration of compressor signals collecting; Vibrate the digital signal processor DSP of adjustment; Said vibrating sensor circuit is gathered the vibration signal of compressor and is transferred vibration signal to voltage signal; Said single-chip microcomputer is sent to digital signal processor after the voltage signal of said vibrating sensor circuit collection is judged, the aperture of the scope adjustment air conditioner electronic expansion valve that the said vibration voltage signal that said digital signal processor is judged according to said single-chip microcomputer belongs to; Air conditioner wind speed; In three kinds of modes of the operating frequency of compressor of air conditioner one or more.
Preferred implementation of the present invention is: said vibrating sensor circuit comprises capacitor C 1, the capacitor C 2 of processor, parallel connection; Resistance R 1 and resistance R 2 series connection backs and capacitor C 1, capacitor C 2 are parallelly connected; The capacitor C 1 of parallel connection, 14 pin and 15 pin of capacitor C 2 one termination processors; 5 pin of another termination processor, 6 pin and 7 pin, the variation in voltage amount Xout of compressor of air conditioner vibration voltage collection terminal output, the voltage acquisition port that Yout connects processor.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. convertible frequency air-conditioner frequency resonance removing method; Said convertible frequency air-conditioner comprises the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top, receive said vibrating sensor circuit according to the single-chip microcomputer of the voltage signal of the vibration acquisition of compressor, vibrate the digital signal processor of adjustment, said convertible frequency air-conditioner frequency resonance removing method comprises the steps:
Gather vibration signal: said vibrating sensor circuit is according to the voltage signal of the vibration acquisition of compressor;
Vibrate adjustment: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 4.6 volts, and the scope that said digital signal processor belongs to according to the voltage signal of the said vibrating sensor circuit collection of said single-chip microcomputer judgement is adjusted one or more in three kinds of modes of operating frequency of aperture, air conditioner wind speed, compressor of air conditioner of air conditioner electronic expansion valve.
2. according to the said convertible frequency air-conditioner frequency resonance of claim 1 removing method; It is characterized in that; Said single-chip microcomputer is judged oscillatory type according to scope under the said vibration voltage signal: the voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 2.5 volts, and the convertible frequency air-conditioner oscillatory type is little shaking; The voltage of gathering when said vibrating sensor circuit is greater than 2.5 volts and during less than 3 volts, and the convertible frequency air-conditioner oscillatory type is to shake; The voltage of gathering when said vibrating sensor circuit is greater than 3.1 volts and during less than 3.5 volts, then convertible frequency air-conditioner generation resonance; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then the blast pipe generation is vibrated; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts, and then the generation of compressor steel body is vibrated.
3. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods; It is characterized in that; The voltage of gathering when said vibrating sensor circuit is greater than 2.2 volts and during less than 2.5 volts, and the convertible frequency air-conditioner oscillatory type is little shaking, and the aperture that reduces electric expansion valve is with the reduction refrigerant flow.
4. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods; It is characterized in that; The voltage of gathering when said vibrating sensor circuit is greater than 2.5 volts and during less than 3 volts; The convertible frequency air-conditioner oscillatory type is shake; The aperture of adjustment electric expansion valve, the aperture that makes electric expansion valve maintain poised state with running frequency and suppress to vibrate.
5. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods; It is characterized in that; The voltage of gathering when said vibrating sensor circuit is greater than 3.1 volts and during less than 3.5 volts; Then convertible frequency air-conditioner produces resonance; One or more modes that adopt to change in the aperture of running frequency or electric expansion valve of compressor are regulated, and make the stagger resonant frequency of convertible frequency air-conditioner of the running frequency of compressor.
6. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods; It is characterized in that; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts; Then blast pipe produces vibration, adopts aperture that reduces electric expansion valve or one or more modes that increase in the wind speed to regulate.
7. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods; It is characterized in that; The voltage of gathering when said vibrating sensor circuit is greater than 3.6 volts and during less than 4 volts; Then compressor steel body produces vibration, adopts aperture, the reduction frequency that increases electric expansion valve or one or more modes that reduce in the wind speed to regulate.
8. according to claim 1 or 2 said convertible frequency air-conditioner frequency resonance removing methods, it is characterized in that, when the voltage of said vibrating sensor circuit collection equals 4.9 volts, the compressor of air conditioner operation irregularity, single-chip microcomputer sends halt instruction.
9. a convertible frequency air-conditioner frequency resonance is eliminated system; It is characterized in that; Comprise the vibrating sensor circuit that is installed in compressor of air conditioner side or air-conditioning blast pipe top; Receive the single-chip microcomputer of vibrating sensor circuit according to the voltage signal of vibration of compressor signals collecting; Vibrate the digital signal processor of adjustment; Said vibrating sensor circuit is gathered the vibration signal of compressor and is transferred vibration signal to voltage signal; Said single-chip microcomputer is sent to digital signal processor after the voltage signal of said vibrating sensor circuit collection is judged, the aperture of the scope adjustment air conditioner electronic expansion valve that the said vibration voltage signal that said digital signal processor is judged according to said single-chip microcomputer belongs to; Air conditioner wind speed; In three kinds of modes of the operating frequency of compressor of air conditioner one or more.
10. said according to Claim 8 convertible frequency air-conditioner frequency resonance is eliminated system; It is characterized in that; Said vibrating sensor circuit comprises capacitor C 1, the capacitor C 2 of processor, parallel connection; Resistance R 1 and resistance R 2 series connection backs and capacitor C 1, capacitor C 2 are parallelly connected; The capacitor C 1 of parallel connection, 14 pin and 15 pin of capacitor C 2 one termination processors; 5 pin of another termination processor, 6 pin and 7 pin, the variation in voltage amount Xout of compressor of air conditioner vibration voltage collection terminal output, the voltage acquisition port that Yout connects processor.
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