CN105091194A - Inverter compressor operating frequency adjusting method and device and inverter air conditioner system - Google Patents

Inverter compressor operating frequency adjusting method and device and inverter air conditioner system Download PDF

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Publication number
CN105091194A
CN105091194A CN201410196225.9A CN201410196225A CN105091194A CN 105091194 A CN105091194 A CN 105091194A CN 201410196225 A CN201410196225 A CN 201410196225A CN 105091194 A CN105091194 A CN 105091194A
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China
Prior art keywords
frequency
electric current
changeable compressor
current
running
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CN201410196225.9A
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CN105091194B (en
Inventor
罗彬�
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201410196225.9A priority Critical patent/CN105091194B/en
Priority claimed from US14/670,974 external-priority patent/US10197320B2/en
Publication of CN105091194A publication Critical patent/CN105091194A/en
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Abstract

The invention discloses an inverter compressor operating frequency adjusting method, comprising the following steps: when detecting that an inverter air conditioner is in a heating mode, acquiring the target operating current of an inverter compressor; adjusting the operating frequency of the inverter compressor according to the target operating current; acquiring continuous operating time, present operating frequency and operating frequency before a first pre-set period of time of the inverter compressor; when judging that the continuous operating time is greater than or equal to a second pre-set period of time and the present operating frequency is greater than or equal to the operating frequency before the first pre-set period of time, acquiring maximum operating frequency of the inverter compressor within a third pre-set period of time; acquiring current correction according to the maximum operating frequency, and correcting the target operating current according to the current correction. The inverter compressor operating frequency adjusting method can be used for automatically adjusting the operating frequency of the inverter compressor when indoor and outdoor machines are not communicated with each other. The invention also discloses an inverter compressor operating frequency adjusting device and an inverter air conditioner system comprising the same.

Description

The control method of frequency-changeable compressor running frequency, device and frequency-conversion air-conditioning system
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of control method of frequency-changeable compressor running frequency, a kind of adjusting device of frequency-changeable compressor running frequency and a kind of frequency-conversion air-conditioning system comprising the adjusting device of this frequency-changeable compressor running frequency.
Background technology
Along with the development of air-conditioning technical, DC frequency converting air-conditioner is more and more subject to the welcome in market, and its sales volume is also in fast lifting.At present, the convertible frequency air-conditioner on market all needs supporting installation, and indoor set, off-premises station need special supporting communication modes to realize controlling the compressor of off-premises station.Therefore, indoor set, off-premises station installation must ensure synchronous, supporting.
The framework of existing frequency-conversion air-conditioning system as shown in Figure 1, off-premises station must receive in the course of the work the indoor set of the specific transmission rule sent from indoor set a series of signal such as switching on and shutting down, temperature setting, indoor temperature or by the signal after indoor set process, thus the compressor that could realize controlling off-premises station runs with specific frequency, and regulate the running frequency of compressor according to indoor change at any time.In prior art, need indoor set to send corresponding signal to off-premises station, just can complete the control to all parts in off-premises station, that is, when indoor set and off-premises station not communication, off-premises station cannot normally run.Therefore, existing air-conditioning system needs to improve.
Summary of the invention
Object of the present invention is intended to solve one of 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-changeable compressor running frequency, the control method of this frequency-changeable compressor running frequency can regulate the running frequency of frequency-changeable compressor when indoor set and off-premises station not communication, decrease controling parameters transmitting procedure, reliability is high.
Another object of the present invention is the adjusting device proposing a kind of frequency-changeable compressor running frequency.
Another object of the present invention is to propose a kind of frequency-conversion air-conditioning system.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of control method of frequency-changeable compressor running frequency, and the control method of this frequency-changeable compressor running frequency comprises the following steps: detect convertible frequency air-conditioner and whether be in heating mode; When described convertible frequency air-conditioner is in heating mode, obtain the object run electric current of described frequency-changeable compressor; The running frequency of frequency-changeable compressor according to described object run Current adjustment; Obtain the running frequency before the continuous working period of described frequency-changeable compressor, current operation frequency and the first Preset Time; Judge whether the described continuous working period is more than or equal to the second Preset Time and described current operation frequency and whether is more than or equal to running frequency before described first Preset Time; When the described continuous working period be more than or equal to described second Preset Time and described current operation frequency is more than or equal to the running frequency before described first Preset Time time, obtain the maximum frequency of operation of described frequency-changeable compressor in the 3rd Preset Time; And obtain electric current correction according to described maximum frequency of operation, and revise to upgrade described object run electric current to described object run electric current according to described electric current correction.
The control method of the frequency-changeable compressor running frequency that the embodiment of the present invention proposes, when detecting that convertible frequency air-conditioner is in heating mode, according to the running frequency of the object run Current adjustment frequency-changeable compressor of the frequency-changeable compressor obtained, and when judging that the continuous working period of frequency-changeable compressor is more than or equal to the second Preset Time and the current operation frequency of frequency-changeable compressor is more than or equal to the running frequency before the first Preset Time, maximum frequency of operation according to obtaining obtains electric current correction, and upgrade object run electric current according to electric current correction, thus realize the automatic adjustment of frequency-changeable compressor running frequency.The control method of this frequency-changeable compressor running frequency can when indoor set and off-premises station not communication, and automatically regulated the running frequency of frequency-changeable compressor by autonomous learning, decrease controling parameters transmitting procedure, reliability is high.
According to one embodiment of present invention, described according to described electric current correction, described object run electric current is revised to upgrade described object run electric current after further comprising the steps of: the described continuous working period is made zero.
According to one embodiment of present invention, described electric current correction is:
ΔI=A×Hzmax 2+B×Hzmax+C
Wherein, Hzmax is described maximum frequency of operation, and A, B and C are preset constant.
According to one embodiment of present invention, described object run electric current is upgraded according to following formula:
I AM0=I AM0+ΔI
Wherein, I aM0for described object run electric current.
For achieving the above object, the present invention on the other hand embodiment also proposed a kind of adjusting device of frequency-changeable compressor running frequency, the adjusting device of this frequency-changeable compressor running frequency comprises: heating mode detection module, whether is in heating mode for detecting convertible frequency air-conditioner; Object run electric current acquisition module, for when described convertible frequency air-conditioner is in heating mode, obtains the object run electric current of described frequency-changeable compressor; Running frequency adjustment module, for the running frequency of frequency-changeable compressor according to described object run Current adjustment; Continuous working period and running frequency acquisition module, for obtaining the running frequency before continuous working period of described frequency-changeable compressor, current operation frequency and the first Preset Time; Judge module, for judging whether the described continuous working period is more than or equal to the second Preset Time and described current operation frequency and whether is more than or equal to running frequency before described first Preset Time; Maximum frequency of operation acquisition module, for be more than or equal to described second Preset Time when the described continuous working period and described current operation frequency is more than or equal to the running frequency before described first Preset Time time, obtain the maximum frequency of operation of described frequency-changeable compressor in the 3rd Preset Time; And object run electric current more new module, for obtaining electric current correction according to described maximum frequency of operation, and revise to upgrade described object run electric current to described object run electric current according to described electric current correction.
The adjusting device of the frequency-changeable compressor running frequency that the embodiment of the present invention proposes is when heating mode detection module detects that convertible frequency air-conditioner is in heating mode, the running frequency of the object run Current adjustment frequency-changeable compressor of the frequency-changeable compressor that running frequency adjustment module obtains according to object run electric current acquisition module, and when judge module judges that the continuous working period of frequency-changeable compressor is more than or equal to the second Preset Time and the current operation frequency of frequency-changeable compressor is more than or equal to the running frequency before the first Preset Time, the object run electric current maximum frequency of operation that more new module obtains according to maximum frequency of operation acquisition module obtains electric current correction, and upgrade object run electric current according to electric current correction, thus realize the automatic adjustment of frequency-changeable compressor running frequency.The adjusting device of this frequency-changeable compressor running frequency can when indoor set and off-premises station not communication, and automatically regulated the running frequency of frequency-changeable compressor by autonomous learning, decrease controling parameters transmitting procedure, reliability is high.
According to one embodiment of present invention, also comprise: zero module, described zero module is used for after at described object run electric current, more new module upgrades described object run electric current, is made zero in the described continuous working period.
According to one embodiment of present invention, described electric current correction is:
ΔI=A×Hzmax 2+B×Hzma x+C
Wherein, Hzmax is described maximum frequency of operation, and A, B and C are preset constant.
According to one embodiment of present invention, described object run electric current more new module upgrade described object run electric current according to following formula:
I AM0=I AM0+ΔI
Wherein, I aM0for described object run electric current.
For achieving the above object, further aspect of the present invention embodiment also proposed a kind of frequency-conversion air-conditioning system, and this frequency-conversion air-conditioning system comprises: signal sends terminal, and described signal sends terminal for sending control signal; Frequency-changeable compressor; Current detecting unit, described current detecting unit is connected with described frequency-changeable compressor, and described current detecting unit is for detecting the current flow of described frequency-changeable compressor; And off-premises station control unit, described off-premises station control unit comprises adjusting device and the reception signal terminal of described frequency-changeable compressor running frequency, and wherein, described reception signal terminal is for receiving described control signal; The adjusting device of described frequency-changeable compressor running frequency is connected with described frequency-changeable compressor respectively with described reception signal terminal, described current detecting unit, and the adjusting device of described frequency-changeable compressor running frequency is used for the running frequency regulating described frequency-changeable compressor according to described control signal and described current flow.
According to the frequency-conversion air-conditioning system of the embodiment of the present invention, send by the reception signal terminal Received signal strength in off-premises station control unit the control signal that terminal sends, and then the adjusting device of frequency-changeable compressor running frequency in off-premises station control unit regulates the running frequency of frequency-changeable compressor according to the current flow that control signal and current detecting unit detect.This frequency-conversion air-conditioning system can regulate the running frequency of the frequency-changeable compressor of off-premises station by autonomous learning independent of indoor set, decrease controling parameters transmitting procedure, reduce the complexity of air-conditioning system, improve air-conditioning system operational reliability.
According to one embodiment of present invention, frequency-conversion air-conditioning system also comprises indoor set control unit, and described control signal for receiving described control signal, and is sent to described reception signal terminal by described indoor set control unit.
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 Organization Chart of existing frequency-conversion air-conditioning system;
Fig. 2 is the structured flowchart of the frequency-conversion air-conditioning system according to the embodiment of the present invention;
Fig. 3 is the Organization Chart of the frequency-conversion air-conditioning system according to the present invention's specific embodiment;
Fig. 4 is the flow chart of the control method of frequency-changeable compressor running frequency according to embodiment; And
Fig. 5 is the structured flowchart of the adjusting device of frequency-changeable compressor running frequency according to the embodiment of the present invention.
Reference numeral:
Indoor set 1: indoor set control unit 30, indoor fan 14 and indoor choke valve 15;
Off-premises station 2: frequency-changeable compressor Mc, current detecting unit 20, off-premises station control unit 21, outer machine environment temperature sensor 22, outer machine system protection sensor 23, systematic parameter acquisition module 24, outer blower fan Mf, outer expansion valve Ev and outer cross valve SV;
Remote controller 101;
Line control machine 102;
Indoor set control unit 30: interior machine control signal receiver module 11, interior machine control processor 12 and signal transmission module 13;
Off-premises station control unit 21: the adjusting device 210 of frequency-changeable compressor running frequency, reception signal terminal 211, blower fan output control module 212, outer expansion valve output control module 213 and outer cross valve output control module 214.
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.
Describe the control method of frequency-changeable compressor running frequency, the adjusting device of frequency-changeable compressor running frequency that propose according to the embodiment of the present invention with reference to the accompanying drawings and comprise the frequency-conversion air-conditioning system of adjusting device of this frequency-changeable compressor running frequency.
First, the frequency-conversion air-conditioning system of embodiment proposition with reference to the accompanying drawings to describe the present invention.
As shown in Figure 2, the frequency-conversion air-conditioning system of the embodiment of the present invention comprises: signal sends terminal 10, frequency-changeable compressor Mc, current detecting unit 20 and off-premises station control unit 21.Wherein, signal sends terminal 10 for sending control signal.Current detecting unit 20 is connected with frequency-changeable compressor Mc, and current detecting unit 20 is for detecting the current flow of frequency-changeable compressor Mc.Off-premises station control unit 21 comprises adjusting device 210 and the reception signal terminal 211 of frequency-changeable compressor running frequency, wherein, reception signal terminal 211 is for reception control signal, the adjusting device 210 of frequency-changeable compressor running frequency is connected with frequency-changeable compressor Mc respectively with reception signal terminal 211, current detecting unit 20, and the adjusting device 210 of frequency-changeable compressor running frequency is for regulating the running frequency of frequency-changeable compressor Mc according to control signal and current flow.
Further, in one embodiment of the invention, frequency-conversion air-conditioning system also comprises indoor set control unit 30, and control signal for reception control signal, and is sent to reception signal terminal 211 by indoor set control unit 30.
Further, Fig. 3 is the Organization Chart of the frequency-conversion air-conditioning system according to the present invention's specific embodiment.As shown in Figure 3, this frequency-conversion air-conditioning system comprises indoor set 1 and off-premises station 2.Wherein, off-premises station 2 comprises frequency-changeable compressor Mc, current detecting unit 20 and off-premises station control unit 21.Wherein, current detecting unit 20 can be compressor current sensor, and this compressor current sensor can be arranged on the circuit board of off-premises station control unit 21.Signal sends terminal 10 can for remote controller 101, line control machine 102 etc., and it can be switching on and shutting down control signal and model selection control signal that signal sends the control signal that terminal 10 sends.The adjusting device 210 of the frequency-changeable compressor running frequency in off-premises station control unit 21 regulates the running frequency of frequency-changeable compressor Mc according to the current flow of model selection control signal and frequency-changeable compressor Mc.Particularly, as shown in Figure 3, reception signal terminal 211 is signal receiving module, and only received the switching on and shutting down control signal and model selection control signal that directly send from remote controller 101, line control machine 102 by control signal receiver module, or received the switching on and shutting down control signal and model selection control signal that send from indoor set 1 by control signal receiver module.
In addition, as shown in Figure 3, off-premises station 2 also comprises outer blower fan Mf, outer expansion valve Ev, outer cross valve SV and outer machine environment temperature sensor 22, outer machine system protection sensor 23, systematic parameter acquisition module 24.Wherein, outer machine environment temperature sensor 22 is for detecting the current environmental temperature of environment residing for off-premises station 2.Systematic parameter acquisition module 24 is connected between each sensor and off-premises station control unit 21, and sends to off-premises station control unit 21 after the parameter that current detecting unit 20, outer machine environment temperature sensor 22 and outer machine system protection sensor 23 gather being processed.Particularly, in one embodiment of the invention, off-premises station control unit 21 also comprises blower fan output control module 212, outer expansion valve output control module 213 and outer cross valve output control module 214.Wherein, the adjusting device 210 of frequency-changeable compressor running frequency, blower fan output control module 212, outer expansion valve output control module 213, outer cross valve output control module 214 are connected with frequency-changeable compressor Mc, outer blower fan Mf, outer expansion valve Ev, outer cross valve SV respectively, and the control signal received according to collection signal and the reception signal terminal 211 of systematic parameter acquisition module 24 output respectively realizes the corresponding control to frequency-changeable compressor Mc, outer blower fan Mf, outer expansion valve Ev and outer cross valve SV.
As shown in Figure 3, indoor set 1 comprises the major electrical equipment parts such as indoor set control unit 30, indoor fan 14 and indoor choke valve 15.Wherein, indoor set control unit 30 can comprise interior machine control signal receiver module 11, interior machine control processor 12 and signal transmission module 13.Indoor fan 14, indoor choke valve 15 and interior machine control signal receiver module 11 are connected with interior machine control processor 12 respectively, and indoor fan 14 and indoor choke valve 15 are controlled by interior machine control processor 12.Signal transmission module 13 is connected with reception signal terminal 211, and switching on and shutting down control signal and model selection control signal are transferred to the control signal receiver module of reception signal terminal 211 with general transmission rule by signal transmission module 13 by indoor set 1.Wherein, switching on and shutting down control signal and model selection control signal directly can be sent to the reception signal terminal 211 in off-premises station 2 by remote controller 101, line control machine 102.Or, indoor set 1 receives the switching on and shutting down control signal and model selection control signal that send from remote controller 101, line control machine 102 by interior machine control signal receiver module 11, then switching on and shutting down control signal and model selection control signal are transmitted to the control signal receiver module of reception signal terminal 211 with general transmission rule by signal transmission module 13 by indoor set 1.
In one embodiment of the invention, frequency-conversion air-conditioning system can control start and stop and the model selection of off-premises station 2 according to switching on and shutting down control signal and model selection control signal.Wherein, when detecting that convertible frequency air-conditioner is in heating mode, the adjusting device 210 of frequency-changeable compressor running frequency obtains object run electric current I aM0with according to object run electric current I aM0regulate the running frequency of frequency-changeable compressor Mc, and when the continuous working period of frequency-changeable compressor be more than or equal to the second Preset Time such as U minute and the current operation frequency of frequency-changeable compressor is more than or equal to the running frequency before the first Preset Time such as W minute time, obtain the maximum frequency of operation Hzmax of frequency-changeable compressor Mc in the 3rd Preset Time such as X minute, and obtain electric current correction amount I according to maximum frequency of operation Hzmax, and then according to electric current correction amount I revise goal running current I aM0to upgrade object run electric current I aM0, finally according to the object run electric current I after renewal aM0regulate the running frequency of frequency-changeable compressor Mc to realize automatic frequency-conversion to control.
Particularly, when convertible frequency air-conditioner initial start-up, the adjusting device 210 of frequency-changeable compressor running frequency can arrange the object run electric current I of frequency-changeable compressor Mc according to the capacity of water of off-premises station 2 aM0for pre-set current value, such as, for the off-premises station 2 of 3, Offered target running current I aM0for 10A with for the off-premises station 2 of 4, Offered target running current I aM0for 13A.Further, in one embodiment of the invention, when frequency-changeable compressor Mc shuts down, the adjusting device 210 of frequency-changeable compressor running frequency can by the object run electric current I after renewal aM0as the object run electric current I of frequency-changeable compressor Mc during off-premises station 2 start next time aM0.Further, in one embodiment of the invention, when frequency-changeable compressor Mc runs, the adjusting device 210 of frequency-changeable compressor running frequency can also obtain object run electric current I according to model selection control signal aM0.
Therefore, the frequency-conversion air-conditioning system of the embodiment of the present invention can when convertible frequency air-conditioner be in the heating mode of not communication, the running frequency automatically regulating frequency-changeable compressor Mc is intelligently carried out according to the capacity of water of off-premises station 2 and the parameter such as continuous working period, current operation frequency, maximum frequency of operation Hzmax of frequency-changeable compressor Mc, the ability of frequency-changeable compressor Mc is played in time, reaches design temperature rapidly.
In one embodiment of the invention, frequency-conversion air-conditioning system can be one-to-one system, also can be drag multisystem, and this frequency-conversion air-conditioning system can be single cooler, also can be air conditioner.Wherein indoor set 1 not by parameter communications such as indoor environment temperatures to off-premises station 2, and be only that the switching on and shutting down control signal sent according to remote controller 101, line control machine 102 or indoor set 1 and model selection control signal control the switch of off-premises station 2 and change mode of operation.Frequency-changeable compressor Mc is controlled under the heating mode that the frequency-conversion air-conditioning system of the embodiment of the present invention can not carry out communication at indoor set 1 and off-premises station 2, the off-premises station control unit 21 of off-premises station 2 can carry out the electric component controlling rapidly the off-premises stations 2 such as frequency-changeable compressor Mc by autonomous learning, thus indoor temperature is arrived and maintains design temperature.
Further, in one embodiment of the invention, off-premises station control unit 21, when receiving switching on and shutting down control signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, off-premises station control unit 21 is avoided to carry out false judgment.That is, off-premises station control unit 21, after receiving switching on and shutting down control signal, postpones Preset Time such as S and starts shooting or shut down second.
According to the frequency-conversion air-conditioning system of the embodiment of the present invention, the control signal that terminal sends is sent by the reception signal terminal Received signal strength in off-premises station control unit, and then the adjusting device of frequency-changeable compressor running frequency in off-premises station control unit is when convertible frequency air-conditioner is in the heating mode of not communication, the current flow detected according to control signal and current detecting unit regulates the running frequency of frequency-changeable compressor.This frequency-conversion air-conditioning system can regulate the running frequency of frequency-changeable compressor to reach and to maintain design temperature independent of indoor set by autonomous learning according to the parameter of frequency-changeable compressor automatically, specific communication is carried out to transmit corresponding controling parameters without the need to indoor set and off-premises station, the structure of frequency-conversion air-conditioning system is made to become simpler, greatly reduce cost, decrease controling parameters transmitting procedure, and improve air-conditioning system operational reliability.
The control method of the frequency-changeable compressor running frequency proposed according to the embodiment of the present invention is described with reference to the accompanying drawings.
As shown in Figure 4, the control method of the frequency-changeable compressor running frequency of the embodiment of the present invention comprises the following steps:
S1, detects convertible frequency air-conditioner and whether is in heating mode.
S2, when convertible frequency air-conditioner is in heating mode, obtains the object run electric current of frequency-changeable compressor.
When convertible frequency air-conditioner initial start-up, the object run electric current that can arrange frequency-changeable compressor according to the capacity of water of off-premises station is pre-set current value, such as the off-premises station of 3, Offered target running current is 10A and the off-premises station for 4, and Offered target running current is 13A.Further, in one embodiment of the invention, when frequency-changeable compressor runs, object run electric current can also be obtained according to model selection control signal.
S3, according to the running frequency of object run Current adjustment frequency-changeable compressor.
After the running frequency regulating frequency-changeable compressor, enter step S4.
S4, obtains the running frequency before the continuous working period of frequency-changeable compressor, current operation frequency and the first Preset Time.
S5, judges whether the continuous working period is more than or equal to the second Preset Time and current operation frequency and whether is more than or equal to running frequency before the first Preset Time.
S6, when the continuous working period be more than or equal to the second Preset Time and current operation frequency is more than or equal to the running frequency before the first Preset Time time, obtain the maximum frequency of operation of frequency-changeable compressor in the 3rd Preset Time.
In step s 6, after obtaining the maximum frequency of operation of frequency-changeable compressor in the 3rd Preset Time, step S7 is entered.In addition, in another embodiment of the present invention, when the continuous working period be more than or equal to the second Preset Time and current operation frequency is less than or equal to the running frequency before the first Preset Time time, return step S1.
S7, obtains electric current correction according to maximum frequency of operation, and revises to upgrade object run electric current to object run electric current according to electric current correction.
In one embodiment of the invention, electric current correction can be:
ΔI=A×Hzmax 2+B×Hzmax+C
Wherein, Hzmax is maximum frequency of operation, and A, B and C are preset constant, electric current correction amount I be more than or equal to zero positive number.
Further, in one embodiment of the invention, object run electric current can be upgraded according to following formula:
I AM0=I AM0+ΔI
Wherein, I aM0for object run electric current.Due to electric current correction be more than or equal to zero positive number, the object run electric current after therefore upgrading is greater than the object run electric current before renewal.It should be noted that, continuous working period is more than or equal to the second Preset Time and the current operation frequency running frequency be more than or equal to before the first Preset Time illustrates that the object run electric current of frequency-changeable compressor is too small, frequency-changeable compressor cannot reach design temperature, therefore, the object run electric current increasing frequency-changeable compressor is needed.
Further, in one embodiment of the invention, when frequency-changeable compressor is shut down, can using the object run electric current of the object run electric current after renewal as frequency-changeable compressor during off-premises station start next time.
Further, in one embodiment of the invention, can also comprise the following steps after object run electric current being revised to upgrade object run electric current and step S7 according to electric current correction:
S8, will make zero in the continuous working period.
It should be noted that, in one embodiment of the invention, step S1 is to step S7, or step S1 to step S8 can be cycled to repeat and carry out, therefore, in step s 8, continuous working period zero can be ensured that the continuous working period obtained in next working cycles is zero-based, thus the reliability of the control method of the frequency-changeable compressor running frequency of the embodiment of the present invention can be ensured.
To sum up, the control method of the frequency-changeable compressor running frequency of the embodiment of the present invention can when convertible frequency air-conditioner be in the heating mode of not communication, the running frequency automatically regulating frequency-changeable compressor is intelligently carried out according to the capacity of water of off-premises station and the parameter such as continuous working period, current operation frequency, maximum frequency of operation of frequency-changeable compressor, the ability of frequency-changeable compressor is played in time, reaches design temperature rapidly.
According to the control method of the frequency-changeable compressor running frequency of the embodiment of the present invention, when detecting that convertible frequency air-conditioner is in heating mode, according to the running frequency of the object run Current adjustment frequency-changeable compressor of the frequency-changeable compressor obtained, and when judging that the continuous working period of frequency-changeable compressor is more than or equal to the second Preset Time and the current operation frequency of frequency-changeable compressor is more than or equal to the running frequency before the first Preset Time, obtain electric current correction, and upgrade object run electric current according to electric current correction, thus realize the automatic adjustment of frequency-changeable compressor running frequency.The control method of this frequency-changeable compressor running frequency can when indoor set and off-premises station not communication, automatically regulate the running frequency of frequency-changeable compressor to reach and to maintain design temperature by autonomous learning, decrease controling parameters transmitting procedure, reliability is high.
The adjusting device 210 of the frequency-changeable compressor running frequency proposed according to the embodiment of the present invention is described with reference to the accompanying drawings.
As shown in Figure 5, the adjusting device 210 of the frequency-changeable compressor running frequency of embodiment of the present invention proposition comprises: heating mode detection module 215, object run electric current acquisition module 216, running frequency adjustment module 217, continuous working period and running frequency acquisition module 218, judge module 219, maximum frequency of operation acquisition module 220 and object run electric current more new module 221.Wherein, whether heating mode detection module 215 is in heating mode for detecting convertible frequency air-conditioner.Object run electric current acquisition module 216, for when convertible frequency air-conditioner is in heating mode, obtains the object run electric current I of frequency-changeable compressor Mc aM0.Running frequency adjustment module 217 is for according to object run electric current I aM0regulate the running frequency of frequency-changeable compressor Mc.Continuous working period and running frequency acquisition module 218 are for obtaining the running frequency before continuous working period of frequency-changeable compressor Mc, current operation frequency and the first Preset Time such as W minute.Judge module 219 is for judging whether the continuous working period is more than or equal to the second Preset Time such as U minute and current operation frequency and whether is more than or equal to running frequency before the first Preset Time.Maximum frequency of operation acquisition module 220 for be more than or equal to the second Preset Time when the continuous working period and current operation frequency is more than or equal to the running frequency before the first Preset Time time, obtain the maximum frequency of operation Hzmax of frequency-changeable compressor Mc in the 3rd Preset Time such as X minute.Object run electric current more new module 221 for obtaining electric current correction amount I according to maximum frequency of operation Hzmax, and according to electric current correction amount I to object run electric current I aM0carry out revising to upgrade object run electric current I aM0.
Particularly, when convertible frequency air-conditioner initial start-up, object run electric current acquisition module 216 can arrange the object run electric current I of frequency-changeable compressor Mc according to the capacity of water of off-premises station 2 aM0for pre-set current value, such as, for the off-premises station 2 of 3, Offered target running current I aM0for 10A with for the off-premises station 2 of 4, Offered target running current I aM0for 13A.Further, in one embodiment of the invention, when frequency-changeable compressor Mc runs, object run electric current acquisition module 216 can also obtain object run electric current I according to the model selection control signal received aM0.
Further, in one embodiment of the invention, electric current correction amount I can be:
ΔI=A×Hzmax 2+B×Hzmax+C
Wherein, Hzmax is maximum frequency of operation, and A, B and C are preset constant, electric current correction amount I be more than or equal to zero positive number.
Further, in one embodiment of the invention, more new module 221 can according to following formula renewal object run electric current I for object run electric current aM0:
I AM0=I AM0+ΔI
Wherein, I aM0for object run electric current.Due to electric current correction amount I be more than or equal to zero positive number, therefore upgrade after object run electric current I aM0be greater than the object run electric current I before renewal aM0.It should be noted that, the continuous working period is more than or equal to the first Preset Time and current operation frequency is more than or equal to the object run electric current I that predeterminated frequency illustrates frequency-changeable compressor Mc aM0too small, frequency-changeable compressor Mc cannot reach design temperature, therefore, needs the object run electric current I increasing frequency-changeable compressor Mc aM0.
Further, in one embodiment of the invention, when frequency-changeable compressor Mc shuts down, can by the object run electric current I after renewal aM0as the object run electric current I of frequency-changeable compressor Mc during off-premises station 2 start next time aM0.
Further, in one embodiment of the invention, the adjusting device 210 of frequency-changeable compressor running frequency can also comprise zero module 222, zero module 222 for object run electric current more new module 221 upgrade object run electric current I aM0after, will make zero in the continuous working period.It should be noted that, in one embodiment of the invention, what the adjusting device 210 of frequency-changeable compressor running frequency can be cycled to repeat carries out work, therefore, continuous working period zero can be ensured that the continuous working period that continuous working period and running frequency acquisition module 218 obtain in the next working cycles of the adjusting device 210 of frequency-changeable compressor running frequency is zero-based by zero module 222, thus can ensure the reliability of the adjusting device 210 of the frequency-changeable compressor running frequency of the embodiment of the present invention.
Further, in another embodiment of the present invention, when judge module 219 judges that the continuous working period is more than or equal to the second Preset Time and current operation frequency is less than or equal to the running frequency before the first Preset Time, maximum frequency of operation acquisition module 220 does not obtain the maximum frequency of operation Hzmax of frequency-changeable compressor Mc in the 3rd Preset Time, therefore, object run electric current more new module 221 do not upgrade object run electric current I aM0.
To sum up, the adjusting device 210 of the frequency-changeable compressor running frequency of the embodiment of the present invention can when convertible frequency air-conditioner be in the heating mode of not communication, the running frequency automatically regulating frequency-changeable compressor Mc is intelligently carried out according to the capacity of water of off-premises station 2 and the parameter such as continuous working period, current operation frequency, maximum frequency of operation Hzmax of frequency-changeable compressor Mc, the ability of frequency-changeable compressor Mc is played in time, reaches rapidly design temperature requirement.
The adjusting device of the frequency-changeable compressor running frequency that the embodiment of the present invention proposes is when heating mode detection module detects that convertible frequency air-conditioner is in heating mode, the running frequency of the object run Current adjustment frequency-changeable compressor of the frequency-changeable compressor that running frequency adjustment module obtains according to object run electric current acquisition module, and when judge module judges that the continuous working period of frequency-changeable compressor is more than or equal to the second Preset Time and the current operation frequency of frequency-changeable compressor is more than or equal to the running frequency before the first Preset Time, the object run electric current maximum frequency of operation that more new module obtains according to maximum frequency of operation acquisition module obtains electric current correction, and upgrade object run electric current according to electric current correction, thus realize the automatic adjustment of frequency-changeable compressor running frequency.The adjusting device of this frequency-changeable compressor running frequency can when indoor set and off-premises station not communication, the running frequency of the frequency-changeable compressor of the outer machine of automatic conditioning chamber is carried out to reach and to maintain design temperature by autonomous learning, decrease controling parameters transmitting procedure, structure is simple, cost is low, and reliability is high.
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-changeable compressor running frequency, is characterized in that, comprises the following steps:
Detect convertible frequency air-conditioner and whether be in heating mode;
When described convertible frequency air-conditioner is in heating mode, obtain the object run electric current of described frequency-changeable compressor;
The running frequency of frequency-changeable compressor according to described object run Current adjustment;
Obtain the running frequency before the continuous working period of described frequency-changeable compressor, current operation frequency and the first Preset Time;
Judge whether the described continuous working period is more than or equal to the second Preset Time and described current operation frequency and whether is more than or equal to running frequency before described first Preset Time;
When the described continuous working period be more than or equal to described second Preset Time and described current operation frequency is more than or equal to the running frequency before described first Preset Time time, obtain the maximum frequency of operation of described frequency-changeable compressor in the 3rd Preset Time; And
Obtain electric current correction according to described maximum frequency of operation, and revise to upgrade described object run electric current to described object run electric current according to described electric current correction.
2. the method for claim 1, is characterized in that, described according to described electric current correction, described object run electric current is revised to upgrade described object run electric current after further comprising the steps of:
The described continuous working period is made zero.
3. the method for claim 1, is characterized in that, described electric current correction is:
ΔI=A×Hzmax 2+B×Hzmax+C
Wherein, Hzmax is described maximum frequency of operation, and A, B and C are preset constant.
4. method as claimed in claim 3, is characterized in that, upgrade described object run electric current according to following formula:
I AM0=I AM0+ΔI
Wherein, I aM0for described object run electric current.
5. an adjusting device for frequency-changeable compressor running frequency, is characterized in that, comprising:
Whether heating mode detection module, be in heating mode for detecting convertible frequency air-conditioner;
Object run electric current acquisition module, for when described convertible frequency air-conditioner is in heating mode, obtains the object run electric current of described frequency-changeable compressor;
Running frequency adjustment module, for the running frequency of frequency-changeable compressor according to described object run Current adjustment;
Continuous working period and running frequency acquisition module, for obtaining the running frequency before continuous working period of described frequency-changeable compressor, current operation frequency and the first Preset Time;
Judge module, for judging whether the described continuous working period is more than or equal to the second Preset Time and described current operation frequency and whether is more than or equal to running frequency before described first Preset Time;
Maximum frequency of operation acquisition module, for be more than or equal to described second Preset Time when the described continuous working period and described current operation frequency is more than or equal to the running frequency before described first Preset Time time, obtain the maximum frequency of operation of described frequency-changeable compressor in the 3rd Preset Time; And
Object run electric current more new module, for obtaining electric current correction according to described maximum frequency of operation, and revises to upgrade described object run electric current to described object run electric current according to described electric current correction.
6. device as claimed in claim 5, is characterized in that, also comprise:
Zero module, described zero module is used for after at described object run electric current, more new module upgrades described object run electric current, is made zero in the described continuous working period.
7. device as claimed in claim 5, it is characterized in that, described electric current correction is:
ΔI=A×Hzmax 2+B×Hzmax+C
Wherein, Hzmax is described maximum frequency of operation, and A, B and C are preset constant.
8. device as claimed in claim 7, it is characterized in that, described object run electric current more new module upgrades described object run electric current according to following formula:
I AM0=I AM0+ΔI
Wherein, I aM0for described object run electric current.
9. a frequency-conversion air-conditioning system, is characterized in that, comprising:
Signal sends terminal, and described signal sends terminal for sending control signal;
Frequency-changeable compressor;
Current detecting unit, described current detecting unit is connected with described frequency-changeable compressor, and described current detecting unit is for detecting the current flow of described frequency-changeable compressor; And
Off-premises station control unit, described off-premises station control unit comprises adjusting device and the reception signal terminal of the frequency-changeable compressor running frequency according to any one of claim 5-8, wherein,
Described reception signal terminal is for receiving described control signal;
The adjusting device of described frequency-changeable compressor running frequency is connected with described frequency-changeable compressor respectively with described reception signal terminal, described current detecting unit, and the adjusting device of described frequency-changeable compressor running frequency is used for the running frequency regulating described frequency-changeable compressor according to described control signal and described current flow.
10. system as claimed in claim 9, it is characterized in that, also comprise indoor set control unit, described control signal for receiving described control signal, and is sent to described reception signal terminal by described indoor set control unit.
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