CN109405187A - A kind of control method and frequency-variable controller - Google Patents
A kind of control method and frequency-variable controller Download PDFInfo
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- CN109405187A CN109405187A CN201811082565.3A CN201811082565A CN109405187A CN 109405187 A CN109405187 A CN 109405187A CN 201811082565 A CN201811082565 A CN 201811082565A CN 109405187 A CN109405187 A CN 109405187A
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- frequency
- variable controller
- control information
- time interval
- changeable compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The present invention provides a kind of control method and frequency-variable controllers, the control method by powering on frequency-variable controller twice, the first frequency control information that the airconditioning control information obtained based on interior circuit plate is generated is obtained according to the time interval powered on twice, and then controls frequency-changeable compressor work.The present invention can obtain airconditioning control information using the on off operating mode of frequency-variable controller, control to realize the frequency of frequency-changeable compressor.
Description
This application claims in submission on June 21st, 2018 Patent Office of the People's Republic of China, application No. is 201810644384.9, invention names
Referred to as a kind of priority of the domestic applications of " information interacting method, device and variable frequency drives ", entire contents pass through reference
It is incorporated in the present application.
Technical field
The present invention relates to frequency-changeable compressor control fields, more specifically, being related to a kind of control method and frequency-variable controller.
Background technique
With environmental degradation, people's awareness of saving energy is gradually increased, and in air-conditioning market, the accounting of convertible frequency air-conditioner mentions year by year
It is high.Generally for the frequency control for realizing frequency-changeable compressor, air conditioner indoor unit needs to set indoor temperature information and user
The information such as temperature are transmitted in the frequency-variable controller of outdoor unit by communication loop, and frequency-variable controller is further according to the temperature received
The control of information progress frequency-changeable compressor.
Summary of the invention
In view of this, the present invention provides a kind of control method and frequency-variable controller, machine and outdoor unit are not carried out indoors
When the communication loop of temperature information transmitting, it is also able to achieve the control to frequency-changeable compressor.
In order to solve the above technical problems, present invention employs following technical solutions:
A kind of control method, applied to the frequency-variable controller in air-conditioning, comprising:
Calculate the time interval that the frequency-variable controller powers on twice；
Obtain the first frequency control information corresponding with the time interval；Wherein, the first frequency control information
The frequency control information generated for the interior circuit plate being connected with the frequency-variable controller based on the airconditioning control information of acquisition；
Based on the first frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
A kind of frequency-variable controller is applied in air-conditioning, comprising:
Interval calculation module, the time interval powered on twice for calculating the frequency-variable controller；
The first information obtains module, for obtaining the first frequency control information corresponding with the time interval；Wherein,
The first frequency control information is that the interior circuit plate being connected with the frequency-variable controller is believed based on the airconditioning control of acquisition
Cease the frequency control information generated；
First control module, for being based on the first frequency control information, control is connected with the frequency-variable controller
Frequency-changeable compressor work.
A kind of frequency-variable controller, comprising:
Memory and processor；
Wherein, the memory is for storing program；
Processor caller is simultaneously used for:
Calculate the time interval that the frequency-variable controller powers on twice；
Obtain the first frequency control information corresponding with the time interval；Wherein, the first frequency control information
The frequency control information generated for the interior circuit plate being connected with the frequency-variable controller based on the airconditioning control information of acquisition；
Based on the first frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
Compared to the prior art, the invention has the following advantages:
The present invention provides a kind of control method and frequency-variable controller, the present invention by being powered on twice to frequency-variable controller,
The first frequency conversion control that the airconditioning control information obtained based on interior circuit plate is generated is obtained according to the time interval powered on twice
Information processed, and then control frequency-changeable compressor work.The present invention can obtain indoor letter using the on off operating mode of frequency-variable controller
Breath, to realize the control to frequency-changeable compressor.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram for convertible frequency air-conditioner that the prior art provides；
Fig. 2 is a kind of structural schematic diagram of improved convertible frequency air-conditioner provided in an embodiment of the present invention；
Fig. 3 is a kind of method flow diagram of control method provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of a scenario that one kind provided in an embodiment of the present invention powers on twice；
Fig. 5 is the method flow diagram of another control method provided in an embodiment of the present invention；
Fig. 6 is a kind of operation schematic diagram of zero cross detection circuit provided in an embodiment of the present invention；
Fig. 7 is a kind of method flow diagram for calculating time interval provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of frequency-variable controller provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of control methods, applied to the frequency-variable controller in air-conditioning, wherein the air-conditioning does not need spy
Fixed communication loop carries out the transmitting of indoor information.
In order to which those skilled in the art can become more apparent upon convertible frequency air-conditioner and the improved air-conditioning of the present invention, now in conjunction with Fig. 1
It is explained with 2.
Fig. 1 is the structural schematic diagram of convertible frequency air-conditioner.Including indoor unit 101 and outdoor unit 105.It is provided in indoor unit 101
Interior circuit plate 1011, outdoor unit 105 include outer air-temperature sensor 1051, outer coil temperature sensor 1052, frequency control electricity
Road plate 1056, reversing arrangement 1053, blower 1054 and frequency-changeable compressor 1055.Wherein, reversing arrangement 1053 can be four-way valve.
Indoor unit 101 is the power supply of outdoor unit 105 by firewire 102 and zero curve 103.Indoor unit 101 is also set up with outdoor unit
There is communication line 104.Wherein, the reason of communication line 104 are arranged is:
Convertible frequency air-conditioner realizes the effect of frequency conversion by adjusting the running frequency of frequency-changeable compressor 1055.This just needs outdoor unit
There is dedicated frequency conversion control circuit plate 1056 to carry out set temperature, operational mode, indoor and outdoor temperature, interior with indoor unit 101 in 105
The real time communication of the information such as outer coil temperature, further according to these information realization compressor frequencies, blower operating, the devices such as reversing arrangement
The control of part.
Wherein, the information exchange of inside and outside machine generally uses TTL (transistor-transistor logic) design of current ring, or
The hardware design of RS485, and building and interacting for communication is realized based on the software design of the serial communication protocols such as Modbus.
The outdoor unit 105 of low side convertible frequency air-conditioner generally uses AC blower fan, exchanges reversing arrangement and frequency-changeable compressor.
Outdoor circuit board 1056 needs to cover following design:
1. the frequency-variable controller of circuit board needs to drive blower outside Room, the alternating current devices such as reversing arrangement, and frequency-variable controller
Switch power technology is generally used, therefore Switching Power Supply need to select relatively high power design that could cope with.
2. also needing to carry out real time communication with indoor unit, to obtain indoor set temperature, the letter such as room temperature and operational mode
Breath.This, which just needs to design, distinctive telecommunication circuit, carries out information transmitting.
3. to detect outer temperature, the information such as outdoor coil pipe used temperature are needed using at least two temperature sensors, therefore outdoor electricity
Road needs to be arranged corresponding temperature sensing circuit.
The present invention provides a kind of control methods, can be realized without specific communications circuit and set between indoor unit and outdoor unit
The transmitting of the information such as temperature, room temperature or operational mode.
Referring to Fig. 3, which may include:
S11, the time interval that the frequency-variable controller powers on twice is calculated；
Specifically, being connected with controllable switch, such as power supply relay between indoor circuit board and frequency-variable controller, pass through
Powering on and powering off for frequency-variable controller is realized to the control of controllable switch, when needing frequency-changeable compressor to work, is closed indoor unit
In power supply relay, so that it may powered on for frequency-variable controller, power on n seconds lasting, be the Switching Power Supply etc. in variable frequency drives
Device charging.Wherein, n can be 3 or 4 seconds etc..
After the devices charging completes such as Switching Power Supply in frequency-variable controller, power supply relay is disconnected, hereafter, as needed
The information being sent in the frequency-variable controller in outdoor unit, to determine power-off time.
It should be noted that power-off time need frequency-variable controller zero load electric discharge the deadline within, with guarantee for
Micro-control unit MCU power supply in frequency-variable controller, to detect the length of power-off time.
After the completion of power-off, power supply relay is re-closed, and guarantees the closed state of power supply relay always, until needing
Until closing when frequency-changeable compressor is run.Wherein, the charger control process of frequency-variable controller is referred to Fig. 4.
After powering on n seconds, kms is powered off, then powers on and remains powered on for frequency-variable controller again.Wherein, k is positive whole
The length of number, power-off time is related by the content of the desired information sent of indoor unit.
S12, the first frequency control information corresponding with the time interval is obtained；
Wherein, the first frequency control information is that the interior circuit plate being connected with the frequency-variable controller is based on obtaining
Airconditioning control information generate frequency control information.
Specifically, the time interval of different power-off corresponds to the first different frequency control information, it is specifically referred to table
1。
The corresponding relationship of 1 time interval of table and the first frequency control information
According to table 1 as can be seen that different time intervals corresponds to the first different frequency control information, when the time of power-off
Between when being divided into 100-200ms, corresponding airconditioning control information 1, when the time interval of power-off is 200-300ms, corresponding air-conditioning control
Information 2 processed, when the time interval of power-off is 300-400ms, corresponding airconditioning control information 3, when the time interval of power-off is
When 400-500ms, corresponding airconditioning control information 4 ... is corresponding when the time interval of power-off is N*100~(N+1) * 100ms
Airconditioning control information N.
Wherein, the first frequency control information is the frequency control that interior circuit plate is generated based on the airconditioning control information of acquisition
Information, airconditioning control information can be the information such as set temperature, operational mode, room temperature.First frequency control information can be room
The initial launch frequency for the frequency-changeable compressor that interior machine is calculated according to airconditioning control information is also possible to and airconditioning control information
After frequency-variable controller receives the first frequency control information, change is calculated according to the first frequency control information in identical information
The initial launch frequency of frequency compressor, and then control frequency-changeable compressor work.
S13, it is based on the first frequency control information, controls the frequency-changeable compressor work being connected with the frequency-variable controller
Make.
Control method provided by the embodiment of the present invention is in practice, specifically, can be set to air-conditioning setting letter
The set temperature for including in breath differs bigger with room temperature, and frequency-variable controller power-off time is longer, and it is defeated that frequency-variable controller is arranged at this time
Frequency and power-off time are positively correlated out, i.e., power-off time is longer, and frequency-variable controller output frequency is bigger, so that the temperature difference is larger
When, frequency-changeable compressor running frequency increases, and enables room temperature to be rapidly achieved setting and stablizes, improves users'comfort.Have no to doubt
It asks, may be set to be the set temperature for including in air-conditioning set information and differ bigger with room temperature, frequency-variable controller power-off time
It is shorter, frequency-variable controller output frequency is set at this time and power-off time is negatively correlated, i.e., power-off time is longer, frequency-variable controller output
Frequency is smaller.Equally, corresponding power-off time section difference of different operational modes etc. can also be set.Arrangement above mode is only
The work-based logic of convertible frequency air-conditioner need to be met, which is not limited by the present invention.
Specifically, when the initial launch frequency that the first frequency control information is frequency-changeable compressor, it can be directly by frequency conversion pressure
The initial launch set of frequency of contracting machine is received initial launch frequency.
When the first frequency control information is information identical with airconditioning control information, frequency-variable controller receives the first change
After frequency control information, the initial launch frequency of frequency-changeable compressor is calculated according to the first frequency control information, and then control and become
The initial launch frequency of frequency compressor.
After controlling frequency-changeable compressor and starting to work, according to intelligent algorithm from the running frequency of main regulation frequency-changeable compressor,
Entire air-conditioning system is set to realize frequency conversionization operation.
Intelligent algorithm includes: that 1) in the process of running, continuous service is more than certain time, raising frequency processing is carried out, until rising
To maximum frequency.
2) electromagnetic torque limits value is set to each frequency separation.As systems stay is run, due to raising frequency or load
It is promoted, compressor electromagnetic torque T_E is caused to be promoted, if T_E has exceeded the electromagnetic torque limits value in current frequency section, pressure
Contracting machine will carry out frequency reducing, and the corresponding torque limit value after electromagnetic torque T_E drops to frequency reducing is hereinafter, then compressor frequency reducing control
System is completed, and compressor allows raising frequency.
3) when excessive discharge temperature, down conversion process is carried out to compressor.
Optionally, on the basis of the present embodiment, further includes:
1) delivery temperature of the frequency-changeable compressor of acquisition is obtained；
2) when the delivery temperature is greater than the second default value, the running frequency of the frequency-changeable compressor is reduced.
Specifically, being additionally provided with exhaust temperature sensor 3025 referring to Fig. 2, in outdoor unit, exhaust temperature sensor 3025 is detected
The delivery temperature of frequency-changeable compressor.Frequency-variable controller can acquire the delivery temperature, and judge whether delivery temperature is greater than
Two default values, wherein the second default value is that technical staff sets according to specific usage scenario.
When being greater than the second default value, illustrate that the delivery temperature of frequency-changeable compressor is higher, frequency conversion compression may be burnt
Machine reduces the running frequency of frequency-changeable compressor at this time, reduces the delivery temperature of frequency-changeable compressor in this way, guarantees to become
The normal work of frequency compressor.
When less than the second default value, illustrates that the delivery temperature of frequency-changeable compressor is not high, frequency-changeable compressor will not be burnt,
The running frequency of frequency-changeable compressor need not be reduced at this time.
Optionally, on the basis of the present embodiment, improved air-conditioning is had a characteristic that
The operating status of the frequency-variable controller control frequency-changeable compressor, the frequency-variable controller and the interior circuit plate
It is connected by relay, wherein the interior circuit plate powers on and breaks using the controllable switch control frequency-variable controller
Electricity and the interior circuit plate control the work of the blower and reversing arrangement of the air-conditioning, such as the frequency of blower, reversing arrangement
Aperture etc..
The present embodiment obtains according to the time interval powered on twice by powering on twice to frequency-variable controller and is based on interior
The first frequency control information that the airconditioning control information that circuit board obtains generates, and then control frequency-changeable compressor and work.This
Invention can obtain indoor information using the on off operating mode of frequency-variable controller, to realize that information is into outdoor unit in air conditioning chamber
Frequency-variable controller transmitting, still can be realized indoor unit no specific communications circuit the case where and the information of outdoor unit pass
It passs.
In addition, the present invention since wiring is similar to constant speed air-conditioning, can directly pass through the outdoor for replacing constant speed air-conditioning in the market
The outer machine or associated component of machine are fast implemented the frequency conversion of constant speed air-conditioning.Specifically, constant speed air-conditioning can be changed
It makes, frequency-variable controller and frequency-changeable compressor is installed, and then carry out upconversion operation using frequency-variable controller driving frequency-changeable compressor,
User is set to experience the energy saving and comfortable of convertible frequency air-conditioner.
Third, the present embodiment eliminate the telecommunication circuit of indoor unit and outdoor unit, and outdoor unit only relies on the change in indoor unit
Frequency controller control line transmits information by controlling the power-off time of frequency-variable controller, it will be able to control frequency-changeable compressor work
Make, reduces the design cost of convertible frequency air-conditioner, the extremely low convertible frequency air-conditioner of cost can be produced accordingly.Here frequency-variable controller
Control line is the control line for controlling frequency-variable controller and being powered and powering off, for example is the input power cord of frequency-variable controller, and defeated
Enter on power supply line comprising controllable switch, such as relay, insulated gate bipolar transistor IGBT pipe, metal-oxide-semiconductor etc..
Optionally, based on any of the above embodiments, may include: referring to Fig. 5, step S11
S21, the input voltage for obtaining the frequency-variable controller；
Specifically, indoor unit embodies controllable switch, such as the switch operation of power supply relay in frequency-variable controller
For the presence or absence of input voltage, when power supply relay closure, input voltage is not zero, and normal condition 220V, 50HZ work as power supply
When relay disconnects, input voltage zero.
S22, the input voltage is converted into pulse signal；
By taking the power supply of 50HZ as an example, through zero cross detection circuit, pulse signal is converted by input voltage.Wherein, zero passage is examined
The working principle of slowdown monitoring circuit is referring to Fig. 6.Zero passage detection also refers in AC system, when positive and negative switching occurs for waveform,
When by zero-bit, detection that system is made.
Further, it is also possible to which input voltage is converted into being powered as high level, power off as low level signal.
S23, the time that pulse value persistently maintains for the signal of the first default value is identified from the pulse signal；
Wherein, the first default value is zero, i.e., this step finds the period that duration impulse value is zero from pulse signal, i.e.,
Time in Fig. 6 between two continuous impulse periods.
Optionally, on the basis of the present embodiment, before calculating the time interval that the frequency-variable controller powers on twice,
Further include:
Judge whether the power-off time of the frequency-variable controller reaches default value；
If reaching default value, described time interval this step for calculating that the frequency-variable controller powers on twice is executed
Suddenly.
Wherein, default value can be 100ms, i.e., in the present embodiment, only when power is off between reach 100ms and think frequency conversion
Controller has powered off, and starts to calculate power-off time at this time.If power-off time is less than 100ms, it is judged as and accidentally turns off or input electricity
Zero is pressed through, not will do it power-off time calculating at this time.
Specifically, referring to Fig. 7, determine that the process for the time that pulse value persistently maintains for the signal of the first default value can
With as follows:
S31, judge whether powering within 10s；If executing step S32 powering within 10s；If not power on 10s with
It is interior, terminate.
Specifically, judging whether is powered within 10s in frequency-variable controller, be because frequency-variable controller powers on n seconds after,
A period of time will be powered off, but the time re-powered does not exceed 10s, so 10s is set at this time, further, it is also possible to
Set other numerical value.In addition, can only count the time interval powered on twice within 10s.
S32, judge whether zero passage incoming level changes；If changing, S33 is thened follow the steps；If not changing, hold
Row step S34；
Specifically, executing step S33, power-off meter at this time if zero passage incoming level changes from the moment powered on to power-off
When device reset.The timing at this point, numerical value of timer is started from scratch.When power is off, incoming level does not change, and executes step at this time
S34, power-off timer add one, and the method and step in the present embodiment executes once every 1ms, if incoming level never becomes
Change, then just adds one every 1ms.When from down to powering on again, zero passage input voltage is changed, and executes step S33 at this time, is broken
Electric timer is reset.
S33, power-off timer are reset；
S34, power-off timer add one；
S35, judge to power off whether timer timing time is greater than 100ms；If more than thening follow the steps S36；If less
In end.
Judge to power off that the reason of whether timer timing time is greater than 100ms is, the time interval of the application setting exists
100ms or more, so needing to judge this time whether power-off is effectively to power off.
After S36, power-off, the first frequency control information corresponding with timing time is obtained.
Wherein, timing time is the time interval of above-mentioned introduction.
By executing step S31 to step S36 every 1ms, so that it may which determination identifies pulse from the pulse signal
The time that value persistently maintains for the signal of the first default value.
S24, the time that will identify that are as the time interval.
In the present embodiment, by using zero cross detection circuit, input voltage is converted into pulse signal, and then can lead to
The time of low and high level in extra pulse signal determines the time interval that frequency-variable controller powers on twice.
Optionally, based on any of the above embodiments, further includes:
1) in preset time, count the frequency-variable controller powers on number；
In the present embodiment, the first frequency control information is not transmitted using the length of the time interval powered on twice, but
Number is powered on using using different, to obtain corresponding frequency control information.
Specifically, preset time can be what technical staff was set according to specific usage scenario.It can be above-mentioned
10s in content can transmit frequency control information, at this time in 10s by way of repeatedly powering on to frequency-variable controller
It needs to count and powers on number.
It should be noted that considering the service life of power supply relay in the present embodiment, it is not suitable for every time to frequency control
Too many power down process is carried out when device powers on.
2) it obtains and powers on the corresponding second frequency control information of number with described；Wherein, the second frequency control letter
Breath is believed for the frequency control for airconditioning control information generation of the interior circuit plate based on acquisition being connected with the frequency-variable controller
Breath；
Specifically, the second frequency control information is the frequency conversion control that interior circuit plate is generated based on the airconditioning control information of acquisition
Information processed, airconditioning control information can be the information such as set temperature, operational mode, room temperature.
This step is similar with step S12, please refers to the explanation of step S12.
3) it is based on the second frequency control information, controls the frequency-changeable compressor work being connected with the frequency-variable controller
Make.
This step is similar with step S13, please refers to the explanation of step S12.
Optionally, it on the basis of the present embodiment, obtains and powers on the corresponding second frequency control information of number with described
Before, further includes:
In the preset time, the adjacent time interval powered on twice is counted；
The corresponding second frequency control information of number is powered on described correspondingly, obtaining, comprising:
It obtains and powers on number and the corresponding second frequency control information of all time intervals with described.
Specifically, being by powering on number and time interval two ways combines and determines the second change in the present embodiment
Frequency control information.It searches simultaneously and powers on number and the corresponding second frequency control information of all time intervals.It is different
The first, second frequency control information to correspond to the different working frequency of frequency-changeable compressor different.
Assuming that powering on number is 3 times, the time interval powered on twice is successively 200,300,500ms, then requires to look up
Electric number is 3 times, and the time interval powered on twice is successively 200,300, the corresponding second frequency control information of 500ms, frequency conversion
Controller adjusts output frequency according to the second frequency control information, to control the working frequency of frequency-changeable compressor.
In the present embodiment, gives using powering on number or powering on the method that number is combined with time interval and determine
The frequency control information of indoor unit transmission, and then a variety of different methods are able to use to obtain the information of indoor unit transmission.
Based on the above method, the present invention also provides a kind of convertible frequency air-conditioners, as shown in Figure 2.
It include indoor unit 301 and outdoor unit 302 referring to Fig. 2, indoor unit 301 includes interior circuit plate 3011, outdoor unit 302
Including outdoor circuit board 3021, frequency-changeable compressor 3022, blower 3023 and reversing arrangement 3024.Wherein, reversing arrangement 3024 can
Think four-way valve.Frequency-variable controller 30211 is provided on outdoor circuit board 3021.Interior circuit plate is for controlling frequency control
The switch state of device, blower and reversing arrangement；Frequency-variable controller is used to control the working condition of compressor.Wherein, interior circuit
The switch state of frequency-variable controller, blower and reversing arrangement can also be separately controlled, the present invention in plate using individually control
It does not limit this.In one embodiment, the outdoor circuit board include the first control output end, the second control output end and
Third control output end；
First control output end of the interior circuit plate is connect with the input terminal of the frequency-variable controller, controls the change
Frequency controller opens or closes；
Second control output end of the interior circuit plate is connect with the blower, for control the blower unlatching or
It closes；
The third control output end of the interior circuit plate is connect with the reversing arrangement, for controlling the reversing arrangement
Open or close.
Further, second control output end and the third control output end are connected to by power circuit respectively
The blower and the reversing arrangement, the power circuit include driving capacitor.Compared to existing convertible frequency air-conditioner, after Fig. 2 is improved
Air-conditioning increase frequency-variable controller in outdoor circuit board.AC compressor is changed to frequency-changeable compressor, and by constant speed sky
Indoor unit directly controls AC compressor switch in tune, is changed to the power switch of control frequency-variable controller.
When indoor unit needs frequency-changeable compressor to run, frequency-variable controller is given to apply power supply, by frequency-variable controller voluntarily basis
Intelligent algorithm autonomous control frequency-changeable compressor frequency height, to realize the function of convertible frequency air-conditioner.It is of course also possible to pass through Fig. 2
Shown in improvement structure manufacture more inexpensive convertible frequency air-conditioner, which eliminates communication loop, greatly reduces frequency conversion sky
It is tuned into this.Existing control can be used according to intelligent algorithm autonomous control frequency-changeable compressor frequency height about frequency-variable controller
Method, such as:
1) in the process of running, continuous service is more than certain time, carries out raising frequency processing, until rising to maximum frequency.
2) electromagnetic torque limits value is set to each frequency separation.As systems stay is run, due to raising frequency or load
It is promoted, compressor electromagnetic torque T_E is caused to be promoted, if T_E has exceeded the electromagnetic torque limits value in current frequency section, pressure
Contracting machine will carry out frequency reducing, and the corresponding torque limit value after electromagnetic torque T_E drops to frequency reducing is hereinafter, then compressor frequency reducing control
System is completed, and compressor allows raising frequency.
3) when excessive discharge temperature, down conversion process is carried out to compressor.
Frequency-variable controller just can control frequency-changeable compressor operation after powering on, and according to intelligent algorithm from main regulation frequency conversion pressure
The running frequency of contracting machine makes entire air-conditioning system realize frequency conversionization operation.
Compared to the structure of the convertible frequency air-conditioner in Fig. 1, the structure of improved air-conditioning has the following advantages in Fig. 2:
1, Switching Power Supply circuit simplifies.
2, inside and outside communication loop is cancelled.
3, outer temperature, external disk tube temperature sensor are cancelled.
Optionally, on the basis of the embodiment of above-mentioned control method, another embodiment of the present invention provides a kind of change
Frequency controller, applied to the frequency-variable controller in air-conditioning, reference Fig. 8 may include:
Interval calculation module 11, the time interval powered on twice for calculating the frequency-variable controller；
The first information obtains module 12, for obtaining the first frequency control information corresponding with the time interval；Its
In, the first frequency control information is airconditioning control of the interior circuit plate based on acquisition being connected with the frequency-variable controller
The frequency control information that information generates；
First control module 13, for being based on the first frequency control information, control is connected with the frequency-variable controller
The frequency-changeable compressor work connect.
Further, further includes:
Temperature acquisition module, the delivery temperature of the frequency-changeable compressor for obtaining acquisition；
Frequency control module, for reducing the frequency-changeable compressor when the delivery temperature is greater than the second default value
Running frequency.
Further, improved air-conditioning has a characteristic that
The operating status of the frequency-variable controller control frequency-changeable compressor, the frequency-variable controller and the interior circuit plate
Be connected by relay, wherein the interior circuit plate using the relay control the frequency-variable controller power on and power off,
And the interior circuit plate controls the blower of the air-conditioning and being switched on and off for reversing arrangement.
The present embodiment obtains according to the time interval powered on twice by powering on twice to frequency-variable controller and is based on interior
The first frequency control information that the airconditioning control information that machine obtains generates, and then control frequency-changeable compressor and work.The present invention
Indoor information can be obtained using the on off operating mode of frequency-variable controller, to realize that the information of air-conditioner outdoor unit and indoor unit is handed over
Mutually, it still can be realized the information exchange of indoor unit and outdoor unit in the case where no specific communications circuit.
In addition, the present invention since wiring is similar to constant speed air-conditioning, can directly pass through the outdoor for replacing constant speed air-conditioning in the market
The outer machine or associated component of machine are fast implemented the frequency conversion of constant speed air-conditioning.Specifically, constant speed air-conditioning can be changed
It makes, is mounted with frequency-variable controller and frequency-changeable compressor, and then carry out frequency conversion behaviour using frequency-variable controller driving frequency-changeable compressor
Make, user is made to experience the energy saving and comfortable of convertible frequency air-conditioner.
Third, the present embodiment eliminate the telecommunication circuit of indoor unit and outdoor unit, and outdoor unit only relies on the change in indoor unit
Frequency controller control line transmits information by controlling the power-off time of frequency-variable controller, it will be able to control frequency-changeable compressor work
Make, reduces the design cost of convertible frequency air-conditioner, the extremely low convertible frequency air-conditioner of cost can be produced accordingly.
It should be noted that the course of work of the modules in the present embodiment, please refers to corresponding in above-described embodiment
Illustrate, details are not described herein.
Optionally, on the basis of the embodiment of any of the above-described frequency-variable controller, the interval calculation module includes:
Voltage acquisition submodule, for obtaining the input voltage of the frequency-variable controller；
Transform subblock, for the input voltage to be converted to pulse signal；
Submodule is identified, for identifying that pulse value is continued by the signal of the first default value from the pulse signal
The time of maintenance；
Determine submodule, the time for will identify that is as the time interval.
Further, on the basis of the present embodiment, further includes:
Judgment module, for before the time interval that interval calculation module calculates that the frequency-variable controller powers on twice,
Judge whether the power-off time of the frequency-variable controller reaches default value；
Interval calculation module calculates between the time that the frequency-variable controller powers on twice if being also used to reach default value
Every.
In the present embodiment, by using zero cross detection circuit, input voltage is converted into pulse signal, and then can lead to
The time of low and high level in extra pulse signal determines the time interval that frequency-variable controller powers on twice.
It should be noted that the course of work of modules and submodule in the present embodiment, please refers to above-described embodiment
In respective description, details are not described herein.
Optionally, on the basis of the embodiment of any of the above-described frequency-variable controller, further includes:
Number statistical module, in preset time, count the frequency-variable controller to power on number；
Second data obtaining module powers on the corresponding second frequency control information of number with described for obtaining；Wherein,
The second frequency control information is that the interior circuit plate being connected with the frequency-variable controller is believed based on the airconditioning control of acquisition
Cease the frequency control information generated；
Second control module, for being based on the second frequency control information, control is connected with the frequency-variable controller
Frequency-changeable compressor work.
Further, further includes:
Interval stats submodule obtains for the second data obtaining module and powers on corresponding second frequency conversion of number with described
Before controlling information, in the preset time, the time interval of adjacent time last time twice is counted；
Correspondingly, second data obtaining module, the corresponding second frequency conversion control of number is powered on described for obtaining
When information processed, it is specifically used for:
It obtains and powers on number and the corresponding second frequency control information of all time intervals with described.
In the present embodiment, gives using powering on number or powering on the method that number is combined with time interval and determine
The frequency control information of indoor unit transmission, and then a variety of different methods are able to use to obtain the information of indoor unit transmission.
It should be noted that the course of work of modules and submodule in the present embodiment, please refers to above-described embodiment
In respective description, details are not described herein.
Optionally, on the basis of the embodiment of above-mentioned control method and device, another embodiment of the present invention is provided
A kind of frequency-variable controller, comprising:
It include: memory and processor；
Wherein, the memory is for storing program；
Processor caller is simultaneously used for:
Calculate the time interval that the frequency-variable controller powers on twice；
Obtain the first frequency control information corresponding with the time interval；Wherein, the first frequency control information
The frequency control information generated for the interior circuit plate being connected with the frequency-variable controller based on the airconditioning control information of acquisition；
Based on the first frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
The present embodiment obtains according to the time interval powered on twice by powering on twice to frequency-variable controller and is based on interior
The first frequency control information that the airconditioning control information that machine obtains generates, and then control frequency-changeable compressor and work.The present invention
Indoor information can be exported using frequency-variable controller control line, still can be realized room in the case where no specific communications circuit
The information exchange of interior machine and outdoor unit.
In addition, the present invention since wiring is similar to constant speed air-conditioning, can directly pass through the outdoor for replacing constant speed air-conditioning in the market
The outer machine or associated component of machine are fast implemented the frequency conversion of constant speed air-conditioning.Specifically, constant speed air-conditioning can be changed
It makes, is mounted with frequency-variable controller and frequency-changeable compressor, and then carry out frequency conversion behaviour using frequency-variable controller driving frequency-changeable compressor
Make, user is made to experience the energy saving and comfortable of convertible frequency air-conditioner.
Third, the present embodiment eliminate the telecommunication circuit of indoor unit and outdoor unit, and outdoor unit only relies on the change in indoor unit
Frequency controller control line transmits information by controlling the power-off time of frequency-variable controller, it will be able to control frequency-changeable compressor work
Make, reduces the design cost of convertible frequency air-conditioner, the extremely low convertible frequency air-conditioner of cost can be produced accordingly.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of control method, which is characterized in that applied to the frequency-variable controller in air-conditioning, comprising:
Calculate the time interval that the frequency-variable controller powers on twice；
Obtain the first frequency control information corresponding with the time interval；Wherein, the first frequency control information be with
The frequency control information that the interior circuit plate that the frequency-variable controller is connected is generated based on the airconditioning control information of acquisition；
Based on the first frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
2. control method according to claim 1, which is characterized in that the frequency-variable controller controls the frequency-changeable compressor
Operating status, the frequency-variable controller is connected with the interior circuit plate by controllable switch, wherein the interior circuit plate
Control that the frequency-variable controller is powered on and powered off and the interior circuit plate controls the wind of the air-conditioning using the controllable switch
Machine and reversing arrangement work.
3. control method according to claim 1 or 2, which is characterized in that calculate what the frequency-variable controller powered on twice
Time interval, comprising:
Obtain the input voltage of the frequency-variable controller；
The input voltage is converted into pulse signal；
The time that pulse value persistently maintains for the signal of the first default value is identified from the pulse signal；
The time that will identify that is as the time interval.
4. control method according to claim 1, which is characterized in that further include:
In preset time, count the frequency-variable controller powers on number；
It obtains and powers on the corresponding second frequency control information of number with described；Wherein, the second frequency control information be with
The frequency control information that the interior circuit plate that the frequency-variable controller is connected is generated based on the airconditioning control information of acquisition；
Based on the second frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
5. control method according to claim 4, which is characterized in that obtain and become with the number corresponding second that powers on
Before frequency control information, further includes:
In the preset time, the adjacent time interval powered on twice is counted；
The corresponding second frequency control information of number is powered on described correspondingly, obtaining, comprising:
It obtains and powers on number and the corresponding second frequency control information of all time intervals with described.
6. control method according to claim 1, which is characterized in that when the calculating frequency-variable controller powers on twice
Between be spaced before, further includes:
Judge whether the power-off time of the frequency-variable controller reaches default value；
If reaching default value, described the step for calculating the time interval that the frequency-variable controller powers on twice is executed.
7. control method according to claim 1, which is characterized in that further include:
Obtain the delivery temperature of the frequency-changeable compressor of acquisition；
When the delivery temperature is greater than the second default value, the running frequency of the frequency-changeable compressor is reduced.
8. a kind of frequency-variable controller is applied in air-conditioning characterized by comprising
Interval calculation module, the time interval powered on twice for calculating the frequency-variable controller；
The first information obtains module, for obtaining the first frequency control information corresponding with the time interval；Wherein, described
First frequency control information is airconditioning control information life of the interior circuit plate based on acquisition being connected with the frequency-variable controller
At frequency control information；
First control module controls the change being connected with the frequency-variable controller for being based on the first frequency control information
Frequency compressor operating.
9. frequency-variable controller according to claim 8, which is characterized in that the frequency-variable controller control frequency-changeable compressor
Operating status, the frequency-variable controller and the interior circuit plate are connected by controllable switch, wherein the interior circuit plate benefit
Control that the frequency-variable controller is powered on and powered off and the interior circuit plate controls the blower of the air-conditioning with the controllable switch
With the work of reversing arrangement.
10. a kind of frequency-variable controller characterized by comprising
Memory and processor；
Wherein, the memory is for storing program；
Processor caller is simultaneously used for:
Calculate the time interval that the frequency-variable controller powers on twice；
Obtain the first frequency control information corresponding with the time interval；Wherein, the first frequency control information be with
The frequency control information that the interior circuit plate that the frequency-variable controller is connected is generated based on the airconditioning control information of acquisition；
Based on the first frequency control information, the frequency-changeable compressor work being connected with the frequency-variable controller is controlled.
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Also Published As
| Publication number | Publication date |
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| CN109405187B (en) | 2021-05-28 |
| CN112762575B (en) | 2022-04-29 |
| CN112762575A (en) | 2021-05-07 |
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