CN104791945B - Air-conditioning system and its control method, the outdoor unit of air-conditioning system - Google Patents
Air-conditioning system and its control method, the outdoor unit of air-conditioning system Download PDFInfo
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- CN104791945B CN104791945B CN201410028569.9A CN201410028569A CN104791945B CN 104791945 B CN104791945 B CN 104791945B CN 201410028569 A CN201410028569 A CN 201410028569A CN 104791945 B CN104791945 B CN 104791945B
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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
- F24F11/62—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air conditioner system control method, comprise the following steps：Obtain the mode of operation of air-conditioning system, and the frequency-changeable compressor of the outdoor unit according to mode of operation startup air-conditioning system；Obtain target refrigerant saturation temperature；VFC is carried out to frequency-changeable compressor according to target refrigerant saturation temperature；During the VFC to frequency-changeable compressor, the run time of frequency-changeable compressor and the running frequency or running current of frequency-changeable compressor are obtained；Target refrigerant saturation temperature is adjusted according to the run time of frequency-changeable compressor and the running frequency or running current of frequency-changeable compressor.The air conditioner system control method can carry out VFC independently of indoor set to the frequency-changeable compressor of outdoor unit, reduce control parameter transmitting procedure, reduce the complexity of air-conditioning system, improve air-conditioning system operational reliability.The invention also discloses a kind of outdoor unit of air-conditioning system and a kind of air-conditioning system of the outdoor unit including the air-conditioning system.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air conditioner system control method and a kind of air-conditioning system
Outdoor unit and the air-conditioning system with the outdoor unit.
Background technology
With continuing to develop for air-conditioning technical, DC frequency converting air-conditioner is increasingly welcome by market, and its sales volume also exists
Fast lifting.At present, the convertible frequency air-conditioner of in the market is required to supporting installation, and indoor set, outdoor unit need special supporting communication
Mode realizes that the compressor to outdoor unit is controlled.Therefore, indoor set, outdoor unit are installed it has to be ensured that synchronous, supporting.
As shown in Figure 1A, outdoor unit must be received from interior the framework of existing frequency-conversion air-conditioning system in the course of the work
A series of signals such as switching on and shutting down, temperature setting, the indoor temperature of indoor set of specific transmission that machine is sent rule or by interior
Signal after machine processing, so that could realize that the compressor of control outdoor unit is run with specific frequency, and at any time according to interior
Change to adjust the running frequency of compressor., could be complete in the prior art, it is necessary to which indoor set sends corresponding signal to outdoor unit
The control of all parts in paired outdoor unit so that the structure of air-conditioning system is sufficiently complex, with high costs.Therefore, existing sky
Adjusting system needs to be improved.
The content of the invention
The purpose of the present invention is intended at least solve above-mentioned technological deficiency.
Therefore, first purpose of the present invention is to propose a kind of air conditioner system control method, the Air-condition system control side
Method can carry out VFC independently of indoor set to the frequency-changeable compressor of outdoor unit, reduce control parameter transmitting procedure,
The complexity of air-conditioning system is reduced, air-conditioning system operational reliability is improved.
Second object of the present invention is to propose a kind of outdoor unit of air-conditioning system.Third object of the present invention exists
In proposing a kind of air-conditioning system.
To reach above-mentioned purpose, a kind of air conditioner system control method that first aspect present invention embodiment is proposed, including with
Lower step：Obtain the mode of operation of air-conditioning system, and the change of the outdoor unit according to the mode of operation startup air-conditioning system
Frequency compressor；Obtain target refrigerant saturation temperature；The frequency-changeable compressor is become according to the target refrigerant saturation temperature
Frequency is controlled；During the VFC to the frequency-changeable compressor, run time and the institute of the frequency-changeable compressor are obtained
State the running frequency or running current of frequency-changeable compressor；And the run time according to the frequency-changeable compressor and the frequency conversion
The running frequency or running current of compressor are adjusted to the target refrigerant saturation temperature.
Air conditioner system control method according to embodiments of the present invention, by obtaining target refrigerant saturation temperature come to outdoor unit
Frequency-changeable compressor carry out VFC, and in the control process to frequency-changeable compressor, according to the frequency-changeable compressor of acquisition
Running frequency or running current and run time adjustment target refrigerant saturation temperature, are achieved independently of indoor set and frequency conversion are compressed
Machine carries out VFC, without indoor set and outdoor unit specifically communicate to transmit corresponding control parameter, reduces control
Parameter transmitting procedure processed, reduces the complexity of air-conditioning system, improves air-conditioning system operational reliability.And so that air-conditioning
The ability of system is played in time.
According to one embodiment of present invention, remote control, line control machine or room are received by the communicator of the outdoor unit
Switching on and shutting down instruction and mode selection command that interior machine is sent, to obtain the mode of operation of the air-conditioning system.
According to one embodiment of present invention, in addition to：When shutting down, by the target refrigerant saturation temperature after adjustment
Spend as target refrigerant saturation temperature during outdoor unit start next time.
According to one embodiment of present invention, the run time and the frequency conversion pressure according to the frequency-changeable compressor
The running frequency or running current of contracting machine are adjusted to the target refrigerant saturation temperature to be further comprised：Judge the frequency conversion
Whether the run time of compressor is more than or equal to the 4th time threshold；If it is determined that the run time of the frequency-changeable compressor is big
In or equal to the 4th time threshold, then the current operation frequency or current running current of the frequency-changeable compressor are obtained；Sentence
Whether the current operation frequency of the frequency-changeable compressor of breaking is more than or equal to predeterminated frequency threshold value, or the frequency-changeable compressor
Whether current running current is more than or equal to predetermined current threshold；If the current operation frequency of the frequency-changeable compressor be more than or
Current running current equal to the predeterminated frequency threshold value, or the frequency-changeable compressor is more than or equal to predetermined current threshold,
Then the target refrigerant saturation temperature is adjusted according to default step-length.
Wherein, when the mode of operation is heating mode, the target refrigerant saturation is increased according to the default step-length
Temperature, and the run time of the frequency-changeable compressor is returned 0；When the mode of operation is refrigeration mode, according to described default
Step-length reduces the target refrigerant saturation temperature, and the run time of the frequency-changeable compressor is returned into 0.
According to one embodiment of present invention, the acquisition target refrigerant saturation temperature further comprises：If the room
When outer machine starts for the first time within the default work period, then the current environmental temperature of the outdoor unit is detected；And according to described
The current environmental temperature of outdoor unit determines the target refrigerant saturation temperature.
According to one embodiment of present invention, when the mode of operation is refrigeration mode, by being arranged on the frequency conversion
First pressure sensor at suction port of compressor obtains first pressure detection signal.
According to one embodiment of present invention, when the mode of operation is heating mode, by being arranged on the frequency conversion
Second pressure sensor at compressor outlet obtains second pressure detection signal.
According to one embodiment of present invention, the frequency-changeable compressor is become according to the target refrigerant saturation temperature
Frequency is controlled, and is further comprised：The first pressure detection signal and second pressure detection signal are selected according to the mode of operation
One of the current refrigerant saturation temperature of generation；And according to the current refrigerant saturation temperature and the target refrigerant saturation temperature pair
The frequency-changeable compressor carries out VFC.
According to one embodiment of present invention, in addition to：After the switching on and shutting down for receiving the outdoor unit are instructed, control
The outdoor unit delay preset time start is shut down.
To reach above-mentioned purpose, a kind of outdoor unit for air-conditioning system that second aspect of the present invention embodiment is proposed, including：Become
Frequency compressor；Controller, the controller is used to be controlled the frequency-changeable compressor, and the controller includes：Start mould
Block, the mode of operation for obtaining air-conditioning system, and the air-conditioning system is started according to the mode of operation of the air-conditioning system
The frequency-changeable compressor of outdoor unit；Target refrigerant saturation temperature control module, for obtaining target refrigerant saturation temperature, and to institute
During the VFC for stating frequency-changeable compressor, the run time and the frequency-changeable compressor of the frequency-changeable compressor are obtained
Running frequency or running current, and run time and the operation frequency of the frequency-changeable compressor according to the frequency-changeable compressor
Rate or running current are adjusted to the target refrigerant saturation temperature；VFC module, for according to the target refrigerant
Saturation temperature carries out VFC to the frequency-changeable compressor.
The outdoor unit of air-conditioning system according to embodiments of the present invention, by obtaining target refrigerant saturation temperature come to frequency conversion pressure
Contracting machine carries out VFC, and in the control process to frequency-changeable compressor, according to the running frequency of the frequency-changeable compressor of acquisition
Or running current and run time adjustment target refrigerant saturation temperature, therefore can be obtained without carrying out particular communication with indoor set
The control parameter that must be controlled to frequency-changeable compressor, realizes and carries out VFC to frequency-changeable compressor so that air-conditioning system
Structure becomes simpler, greatly reduces cost, and make it that the ability of air-conditioning system is played in time.
According to one embodiment of present invention, the target refrigerant saturation temperature control module, being additionally operable to will when shutting down
The target refrigerant saturation temperature after adjustment is used as target refrigerant saturation temperature during outdoor unit start next time.
According to one embodiment of present invention, it is more than or equal to the 4th time threshold in the run time of the frequency-changeable compressor
When, and the current operation frequency of the frequency-changeable compressor is more than or equal to the current of predeterminated frequency threshold value or the frequency-changeable compressor
When running current is more than or equal to predetermined current threshold, the target refrigerant saturation temperature control module adjusts institute according to default step-length
State target refrigerant saturation temperature.
Wherein, when the mode of operation is heating mode, the target refrigerant saturation temperature control module is according to described
Default step-length increases the target refrigerant saturation temperature, and the run time of the frequency-changeable compressor is returned into 0；The target refrigerant
Saturation temperature control module reduces the target refrigerant when the mode of operation is refrigeration mode, according to the default step-length and satisfied
And temperature, and the run time of the frequency-changeable compressor is returned 0.
According to one embodiment of present invention, in addition to：Temperature sensor, the temperature sensor detects the outdoor unit
The current environmental temperature of local environment, wherein, if the outdoor unit starts for the first time within the default work period, the mesh
Mark refrigerant saturation temperature control module determines the target refrigerant saturation temperature according to the current environmental temperature of the outdoor unit.
According to one embodiment of present invention, in addition to：The first pressure for being arranged on the frequency-changeable compressor porch is passed
Sensor, first pressure sensor generation first pressure detection signal when the mode of operation is refrigeration mode.
According to one embodiment of present invention, in addition to：The second pressure for being arranged on the frequency-changeable compressor exit is passed
Sensor, second pressure sensor generation second pressure detection signal when the mode of operation is heating mode.
According to one embodiment of present invention, the target refrigerant saturation temperature control module is selected according to the mode of operation
One of the first pressure detection signal and second pressure detection the signal current refrigerant saturation temperature of generation are selected, and it is cold to obtain target
Matchmaker's saturation temperature, the VFC module is according to the current refrigerant saturation temperature, the target refrigerant saturation temperature to institute
State frequency-changeable compressor and carry out VFC.
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of air-conditioning system, and it includes the present invention the
The outdoor unit for the air-conditioning system that two aspect embodiments are proposed.
Air-conditioning system according to embodiments of the present invention, outdoor unit is according to the operational factor of frequency-changeable compressor to frequency-changeable compressor
VFC is carried out, control parameter is obtained without indoor set or without outdoor unit and indoor set progress particular communication so that
The structure of air-conditioning system becomes simpler, greatly reduces cost.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Figure 1A is the Organization Chart of existing frequency-conversion air-conditioning system；
Figure 1B is the Organization Chart of the air-conditioning system according to one embodiment of the invention；
Fig. 2 is the Organization Chart of the air-conditioning system according to another embodiment of the present invention；
Fig. 3 is the control logic schematic diagram of the air-conditioning system according to embodiment 1；
Fig. 4 is the control logic schematic diagram of the air-conditioning system according to embodiment 2；
Fig. 5 is the flow chart of the air conditioner system control method according to the embodiment of the present invention；
Fig. 6 is the flow chart of the air conditioner system control method according to one embodiment of the invention；And
Fig. 7 is the block diagram of the outdoor unit of the air-conditioning system according to the embodiment of the present invention.
Reference：
Indoor set 1：Interior machine control signal receiving module 11, interior machine control processor 12, signal transmission module 13, indoor wind
Machine 14 and indoor choke valve 15；
Outdoor unit 2：Frequency-changeable compressor Mc and controller 21, communicator 22, first pressure sensor 23, second pressure sensing
Device 24, temperature sensor 25, outer blower fan Mf, outer expansion valve Ev, outer four-way valve SV and outer machine system protection sensor 26, system ginseng
Number acquisition module 27；
Remote control 3；
Line control machine 4；
Controller 21：Compressor output frequency control module 211（VFC module 203）, blower fan output control module
212nd, outer expansion valve output control module 213 and outer four-way valve output control module 214, starting module 201, target refrigerant saturation
Temperature control modules 202.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
Purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This
Outside, the invention provides various specific techniques and material example, but those of ordinary skill in the art can be appreciated that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
" on " structure can include the first and second features and be formed as the embodiment that directly contacts, other feature shape can also be included
Into the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection or the connection of two element internals, can
To be to be joined directly together, it can also be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to the accompanying drawings come the air-conditioning system for describing to propose according to embodiments of the present invention, air conditioner system control method and
The outdoor unit of air-conditioning system.
First, the air-conditioning system that embodiment is proposed with reference to the accompanying drawings to describe the present invention.
Figure 1B is the Organization Chart of the air-conditioning system according to one embodiment of the invention.As shown in Figure 1B, the air-conditioning system bag
Include indoor set 1 and outdoor unit 2.
Wherein, outdoor unit 2 includes frequency-changeable compressor Mc and controller 21, and controller 21 is according to frequency-changeable compressor Mc operation
Parameter and independently of indoor set 1 to frequency-changeable compressor Mc carry out VFC.
Also, outdoor unit 2 also include communicator 22, communicator 22 be used for receive remote control 3, line control machine 4 directly transmit or
Switching on and shutting down instruction and mode selection command that indoor set 1 is sent, wherein, controller 21 is according to frequency-changeable compressor Mc operational factor
Mode of operation corresponding with mode selection command carries out VFC to frequency-changeable compressor Mc.Specifically, as shown in Figure 1B, communicate
Device 22 is signal receiving module, and is only directly transmitted by the reception of control signal receiving module from remote control 3, line control machine 4
Switching on and shutting down command control signal and mode selection command control signal, or by control signal receiving module receive come from room
Switching on and shutting down command control signal and mode selection command control signal that interior machine 1 is sent.
As shown in Figure 1B, indoor set 1 includes interior machine control signal receiving module 11, interior machine control processor 12, signal biography
The major electrical equipment parts such as defeated module 13, indoor fan 14 and indoor choke valve 15.Indoor fan 14 and indoor choke valve 15 are by interior
Machine control processor 12 is controlled, and indoor set 1 is referred to switching on and shutting down command control signal and model selection by signal transmission module 13
Control signal is made to be transferred to the control signal receiving module of communicator 22 with general transmission rule.Wherein, switching on and shutting down instruction control
Signal and mode selection command control signal processed can be transmitted directly to the communicator 22 in outdoor unit 2 by indoor set 1.Or,
Indoor set 1 receives the switching on and shutting down sent from remote control 3, line control machine 4 by interior machine control signal receiving module 11 and instructs control
Signal and mode selection command control signal, then indoor set 1 by signal transmission module 13 by switching on and shutting down command control signal
The control signal receiving module of communicator 22 is transmitted to general transmission rule with mode selection command control signal.
In an embodiment of the present invention, the air-conditioning system is controlled according to switching on and shutting down command control signal and mode selection command
The start and stop and model selection of the outer machine of signal control room.
As shown in Figure 1B, outdoor unit 2 also includes the first pressure sensor 23 for being arranged on frequency-changeable compressor Mc porch, the
One pressure sensor 23 generation first pressure detection signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single
During cold, it only need to set first pressure sensor 23 at frequency-changeable compressor Mc muffler to detect air-conditioning system refrigeration time-varying
Frequency compressor Mc return-air low-pressure lateral pressures.
In another embodiment of the present invention, as shown in Fig. 2 outdoor unit 2 also goes out including being arranged on frequency-changeable compressor Mc
Second pressure sensor 24 at mouthful, the generation second pressure detection when mode of operation is heating mode of second pressure sensor 24
Signal.That is, when air-conditioning system is air conditioner, need to also set second pressure to pass at frequency-changeable compressor Mc blast pipe
Frequency-changeable compressor Mc is vented high side pressure when sensor 24 is to detect that air-conditioning system is heated.It is of course also possible to behind four-way valve
A pressure sensor is assembled, is low-pressure lateral pressure during refrigeration, it is substantially suitable with back pressure.It is high pressure side pressure when heating
Power is substantially suitable with pressure at expulsion.
Wherein, controller 21 selects first pressure detection signal and second pressure to detect signal all one's life according to mode of operation
Into current refrigerant saturation temperature, and target refrigerant saturation temperature is obtained, and according to current refrigerant saturation temperature, target refrigerant saturation
Temperature carries out VFC to frequency-changeable compressor Mc, wherein, during the VFC to frequency-changeable compressor Mc, controller 21
Target refrigerant saturation temperature is adjusted according to frequency-changeable compressor Mc operational factor.In an embodiment of the present invention, control
Device 21 regard the target refrigerant saturation temperature after adjustment as initial target refrigerant during start next time of outdoor unit 2 when shutting down
Saturation temperature.
Also, as shown in Figure 1B or Fig. 2, outdoor unit 2 also includes temperature sensor 25, the detection outdoor unit of temperature sensor 25
The current environmental temperature of 2 local environments, wherein, if outdoor unit 2 starts for the first time within the default work period, controller 21
Target refrigerant saturation temperature is determined according to the current environmental temperature of outdoor unit 2.It should be noted that the default work period should be made extensively
Reason and good sense solution, can be several years, or some months.For example, after outdoor unit 2 is being closed summer, be just then turned on until winter,
When at this moment starting for the first time if in the winter after some months, controller 21 is determined according to the current environmental temperature of outdoor unit 2
Target refrigerant saturation temperature, rather than last shutdown（Summer a few months ago）Target refrigerant after Shi Jilu adjustment is satisfied
And temperature.
In addition, as shown in Figure 1B or Fig. 2, outdoor unit 2 also includes outer blower fan Mf, outer expansion valve Ev, outer four-way valve SV and outer
Machine system protection sensor 26, systematic parameter acquisition module 27, systematic parameter acquisition module 27 are connected to each sensor and control
Between device 21 processed, first pressure sensor 23, second pressure sensor 24 and temperature sensor 25, outer machine system protection are passed
The parameter that sensor 26 is gathered is sent to controller 21 after being handled.Wherein, controller 21 is controlled including compressor output frequency
Module 211, blower fan output control module 212, outer expansion valve output control module 213 and outer four-way valve output control module 214,
Compressor output frequency control module 211, blower fan output control module 212, outer expansion valve output control module 213 and outer four-way
Valve output control module 214 respectively according to systematic parameter acquisition module 27 export collection signal realize to frequency-changeable compressor Mc,
Outer blower fan Mf, outer expansion valve Ev and outer four-way valve SV are accordingly controlled.
In one embodiment of the invention, the run time of the operational factor of frequency-changeable compressor including frequency-changeable compressor with
And the running frequency or running current of frequency-changeable compressor, wherein the run time in frequency-changeable compressor is more than or equal to the 4th time threshold
Value, and the current operation frequency of frequency-changeable compressor is more than or equal to the current running current of predeterminated frequency threshold value or frequency-changeable compressor
During more than or equal to predetermined current threshold, controller adjusts target refrigerant saturation temperature according to default step-length.
Specifically, implementation of the present invention is described in detail with two embodiments of heating mode and refrigeration mode separately below
The control process of the air-conditioning system of example.
【Embodiment 1】
As shown in figure 3, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured with outdoor unit 2
Force snesor 23, outdoor unit 2 freezes according to the mode selection command control signal and switching on and shutting down command control signal received to be transported
OK.
Also, if indoor set was started for the first time in the default work period, controller then works as front ring according to outdoor unit
Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature is between 30-35 DEG C, it is determined that initial target it is cold
Matchmaker's saturation temperature be 6 DEG C, outdoor environment temperature between 35-40 DEG C, it is determined that initial target refrigerant saturation temperature be 3 DEG C, room
External environment temperature between 25-30 DEG C, it is determined that initial target refrigerant saturation temperature be 8 DEG C.If indoor set is not default work
Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller is recorded when then being shut down according to the last time is started shooting as this
When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation
Temperature Te, PID regulations are constantly carried out then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right
It is described as follows in PID control：
Current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes deviation △ e=Te-Tes（Such as current Te=
10, target Tes=6, then current △ e0=10-6=4）, because chip gathered data is discrete, before certain time
（Before such as 40s）△ e1 and current △ e0 difference or △ e1 and △ e0 weighted value determine that feedback quantity carries out PID calculating, with
Go out the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compress
Machine rotation speed change amount=（Kp+Ki/s+Kd*s）*E（△ e1, △ e0）, wherein Kp, Ki, s, Kd is pre-set constant, △
E1, △ e0 are the feedback variable monitored in real time.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor
Minute（30 minutes）Afterwards, controller compares for such as F hertz with predeterminated frequency threshold value the current operation frequency of frequency-changeable compressor
Compared with to judge whether to need to be modified target refrigerant saturation temperature Tes, or controller is to the current fortune of frequency-changeable compressor
Row electric current is compared to judge whether to need to be modified target refrigerant saturation temperature Tes with predetermined current threshold.
After frequency-changeable compressor is run E minute, and frequency-changeable compressor current operation frequency more than or equal to F hertz or
The current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor cooling load of air-conditioning system
Than larger, controller adjusts target refrigerant saturation temperature Tes, i.e., continuous downward revision target refrigerant saturation temperature according to default step-length
Tes is spent, for example, adjusts Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, while during by the operation of the frequency-changeable compressor
Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Te with the target refrigerant saturation temperature Tes of renewal
Regulation so that frequency-changeable compressor improves rotating speed reduction suction pressure, makes indoor temperature reach sets target.Meanwhile, record is current
Target refrigerant saturation temperature, can be used as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air-conditioning system of the embodiment of the present invention can influence refrigeration system operation to join according to system indoor load situation
Several situations is identified and judged, thus intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and
Shi Fahui, reaches design temperature requirement.
【Embodiment 2】
As shown in figure 4, in a heating mode, the second pressure for detecting refrigerant high side pressure value is configured with outdoor unit 2
Force snesor 24, outdoor unit 2 heats fortune according to the mode selection command control signal and switching on and shutting down command control signal that receive
OK.
Also, if indoor set was started for the first time in the default work period, controller then works as front ring according to outdoor unit
Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature is between 7-10 DEG C, it is determined that initial target it is cold
Matchmaker's saturation temperature is 46 DEG C.If indoor set was started for the first time in the default work period, controller then stops according to the last time
Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation
Temperature Tc, PID regulations are constantly carried out then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor
Minute（30 minutes）Afterwards, controller compares for such as F hertz with predeterminated frequency threshold value the current operation frequency of frequency-changeable compressor
Compared with to judge whether to need to be modified target refrigerant saturation temperature Tcs, or controller is to the current fortune of frequency-changeable compressor
Row electric current is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs with predetermined current threshold.
After frequency-changeable compressor is run E minute, and frequency-changeable compressor current operation frequency more than or equal to F hertz or
The current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor heating load of air-conditioning system
Than larger, controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly correct target refrigerant saturation temperature upwards
Tcs is spent, for example, adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while during by the operation of the frequency-changeable compressor
Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Tc with the target refrigerant saturation temperature Tcs of renewal
Regulation so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure, indoor temperature is reached sets target as early as possible.Meanwhile,
Current goal refrigerant saturation temperature is recorded, the initial target refrigerant saturation temperature started shooting next time can be used as.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating operation to join according to system indoor load situation
Several situations is identified and judged, thus intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and
Shi Fahui, reaches design temperature requirement.
In an embodiment of the present invention, air-conditioning system can be one-to-one system or one drags multisystem, and should
Air-conditioning system can be single cooler or air conditioner.Wherein indoor set does not communicate the parameters such as indoor environment temperature to room
Outer machine, and be only that the startup-shutdown instruction sent according to line control machine, remote control or indoor set controls the start-stop of outdoor unit.This hair
The air-conditioning system of bright embodiment can be under machine and outdoor unit are communicated without control parameter indoors refrigeration and/or heating mode
Control frequency-changeable compressor, the controller of outdoor unit can autonomous learning complete the electrical equipment of the outdoor units such as rapid control frequency-changeable compressor
Part, so that indoor temperature reaches and maintains design temperature.
Embodiments in accordance with the present invention, controller 21 enters line delay certain time for example when receiving machine open/close signal
Handle within S seconds, to prevent client from causing outdoor unit 2 to start operating because of maloperation selection, it is to avoid the controller of outdoor unit carries out mistake
Judge.That is, controller is after switching on and shutting down instruction is received, the start in such as S seconds of delay preset time or shutdown.
The controller of outdoor unit in air-conditioning system according to embodiments of the present invention, air-conditioning system is according to frequency-changeable compressor
Operational factor carries out VFC independently of indoor set to frequency-changeable compressor, is specifically led to without indoor set and outdoor unit
Interrogate to transmit corresponding control parameter so that the structure of air-conditioning system becomes simpler, greatly reduces cost.
The air conditioner system control method proposed according to embodiments of the present invention described with reference to the accompanying drawings.
Fig. 5 is the flow chart of the air conditioner system control method according to the embodiment of the present invention.As shown in figure 5, the air-conditioning system
Control method comprises the following steps：
S1, obtains the operational factor of the frequency-changeable compressor of the outdoor unit of air-conditioning system.
S2, using the controller of outdoor unit according to the indoor set pair of the operational factor of frequency-changeable compressor independently of air-conditioning system
The frequency-changeable compressor of outdoor unit carries out VFC.
That is, after air-conditioning system is started, the first pressure sensor and/or second pressure sensor point of outdoor unit
Not Jian Ce frequency-changeable compressor air inlet pressure force value and/or exhaust pressure value, and temperature sensor detection outdoor unit around environment
Temperature, and the frequency-changeable compressor air inlet pressure force value and/or exhaust pressure value that detect and outdoor unit environment temperature are sent to
Systematic parameter acquisition module, frequency-changeable compressor air inlet pressure force value that controller is collected according to systematic parameter acquisition module and/or
Exhaust pressure value and outdoor unit environment temperature carry out internal arithmetic processing to generate control signal, and frequency-changeable compressor is carried out
VFC, and externally blower fan, outer expansion valve, outer four-way valve are accordingly controlled.
In the air conditioner system control method of the embodiment of the present invention, the controller of outdoor unit is according to the operation of frequency-changeable compressor
Parameter carries out VFC independently of indoor set to frequency-changeable compressor, without indoor set and outdoor unit carry out specific communication with
Corresponding control parameter is transmitted, control parameter transmitting procedure is reduced, the complexity of air-conditioning system is reduced, air-conditioning system is improved
System operational reliability.
Further, as shown in fig. 6, air conditioner system control method according to an embodiment of the invention includes following step
Suddenly：
S801, obtains the mode of operation of air-conditioning system, and the frequency conversion of the outdoor unit according to mode of operation startup air-conditioning system
Compressor.
Wherein, by the communicator of outdoor unit receive switching on and shutting down instruction that remote control, line control machine or indoor set send and
Mode selection command, to obtain the mode of operation of air-conditioning system.
S802, obtains target refrigerant saturation temperature.
Wherein, according to one embodiment of present invention, if outdoor unit starts for the first time within the default work period,
The current environmental temperature of outdoor unit is detected, target refrigerant saturation temperature is determined according to the current environmental temperature of outdoor unit.Need
Bright, the default work period should broadly understood, and can be several years, or some months.For example, when outdoor unit is in summer
After closing, just it is then turned on until winter, when at this moment starting for the first time if in the winter after some months, controller is according to outdoor
The current environmental temperature of machine determines target refrigerant saturation temperature, rather than last shutdown（Summer a few months ago）Shi Jilu's
Target refrigerant saturation temperature after adjustment.
S803, VFC is carried out according to target refrigerant saturation temperature to frequency-changeable compressor.
S804, during the VFC to frequency-changeable compressor, obtains run time and the frequency conversion of frequency-changeable compressor
The running frequency or running current of compressor.
S805, according to the run time of frequency-changeable compressor and the running frequency or running current of frequency-changeable compressor to target
Refrigerant saturation temperature is adjusted.
Specifically, in step S805, according to the operation of the run time of frequency-changeable compressor and frequency-changeable compressor frequency
Rate or running current are adjusted to target refrigerant saturation temperature to be further comprised：Judge frequency-changeable compressor run time whether
More than or equal to the 4th time threshold；If it is determined that the run time of frequency-changeable compressor is more than or equal to the 4th time threshold, then
Obtain the current operation frequency or current running current of frequency-changeable compressor；Judge whether the current operation frequency of frequency-changeable compressor is big
In or equal to predeterminated frequency threshold value, or whether the current running current of frequency-changeable compressor is more than or equal to predetermined current threshold；
If the current operation frequency of frequency-changeable compressor is more than or equal to the current operation electricity of predeterminated frequency threshold value, or frequency-changeable compressor
Stream is more than or equal to predetermined current threshold, then adjusts target refrigerant saturation temperature according to default step-length.
Wherein, when mode of operation is heating mode, target refrigerant saturation temperature is increased according to default step-length, and will be described
The run time of frequency-changeable compressor returns 0；When mode of operation is refrigeration mode, target refrigerant saturation temperature is reduced according to default step-length
Degree, and the run time of the frequency-changeable compressor is returned 0.
The embodiment of the present invention is described in detail in embodiment 1 and the embodiment 2 of heating mode separately below in a chiller mode
Air conditioner system control method.
【Embodiment 1】
As shown in figure 3, in cooling mode, the first pressure for detecting refrigerant low-pressure lateral pressure value is configured with outdoor unit 2
Force snesor 23, outdoor unit 2 freezes according to the mode selection command control signal and switching on and shutting down command control signal received to be transported
OK.
Also, if indoor set was started for the first time in the default work period, controller then works as front ring according to outdoor unit
Border temperature determines target refrigerant saturation temperature Tes, for example, outdoor environment temperature is between 30-35 DEG C, it is determined that initial target it is cold
Matchmaker's saturation temperature be 6 DEG C, outdoor environment temperature between 35-40 DEG C, it is determined that initial target refrigerant saturation temperature be 3 DEG C, room
External environment temperature between 25-30 DEG C, it is determined that initial target refrigerant saturation temperature be 8 DEG C.If indoor set is not default work
Make for the first time to start in the cycle, the target refrigerant saturation temperature that controller is recorded when then being shut down according to the last time is started shooting as this
When initial target refrigerant saturation temperature.
Then the first pressure that controller is generated according to first pressure sensor 23 detects the current refrigerant saturation of signal generation
Temperature Te, PID regulations are constantly carried out then according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, it is right
It is described as follows in PID control：
Current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes deviation △ e=Te-Tes（Such as current Te=
10, target Tes=6, then current △ e0=10-6=4）, because chip gathered data is discrete, before certain time
（Before such as 40s）△ e1 and current △ e0 difference or △ e1 and △ e0 weighted value determine that feedback quantity carries out PID calculating, with
Go out the changing value of frequency-changeable compressor running frequency.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compress
Machine rotation speed change amount=（Kp+Ki/s+Kd*s）*E（△ e1, △ e0）, wherein Kp, Ki, s, Kd is pre-set constant, △
E1, △ e0 are the feedback variable monitored in real time.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor
Minute（30 minutes）Afterwards, controller compares for such as F hertz with predeterminated frequency threshold value the current operation frequency of frequency-changeable compressor
Compared with to judge whether to need to be modified target refrigerant saturation temperature Tes, or controller is to the current fortune of frequency-changeable compressor
Row electric current is compared to judge whether to need to be modified target refrigerant saturation temperature Tes with predetermined current threshold.
After frequency-changeable compressor is run E minute, and frequency-changeable compressor current operation frequency more than or equal to F hertz or
The current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value, it is possible to determine that the indoor cooling load of air-conditioning system
Than larger, controller adjusts target refrigerant saturation temperature Tes, i.e., continuous downward revision target refrigerant saturation temperature according to default step-length
Tes is spent, for example, adjusts Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, while during by the operation of the frequency-changeable compressor
Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Te with the target refrigerant saturation temperature Tes of renewal
Regulation so that frequency-changeable compressor improves rotating speed reduction suction pressure, makes indoor temperature reach sets target.Meanwhile, record is current
Target refrigerant saturation temperature, can be used as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the air conditioner system control method of the embodiment of the present invention can be according to system indoor load situation influence refrigeration system
The situation of system operational factor is identified and judged, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system
Ability play in time, reach design temperature requirement.
【Embodiment 2】
As shown in figure 4, in a heating mode, the second pressure for detecting refrigerant high side pressure value is configured with outdoor unit 2
Force snesor 24, outdoor unit 2 heats fortune according to the mode selection command control signal and switching on and shutting down command control signal that receive
OK.
Also, if indoor set was started for the first time in the default work period, controller then works as front ring according to outdoor unit
Border temperature determines target refrigerant saturation temperature Tcs, for example, outdoor environment temperature is between 7-10 DEG C, it is determined that initial target it is cold
Matchmaker's saturation temperature is 46 DEG C.If indoor set was started for the first time in the default work period, controller then stops according to the last time
Initial target refrigerant saturation temperature when the target refrigerant saturation temperature recorded during machine is started shooting as this.
Then the second pressure that controller is generated according to second pressure sensor 24 detects the current refrigerant saturation of signal generation
Temperature Tc, PID regulations are constantly carried out then according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor
Minute（30 minutes）Afterwards, controller compares for such as F hertz with predeterminated frequency threshold value the current operation frequency of frequency-changeable compressor
Compared with to judge whether to need to be modified target refrigerant saturation temperature Tcs, or controller is to the current fortune of frequency-changeable compressor
Row electric current is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs with predetermined current threshold.
After frequency-changeable compressor is run E minute, and frequency-changeable compressor current operation frequency more than or equal to F hertz or
The current running current of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor heating load of air-conditioning system
Than larger, controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly correct target refrigerant saturation temperature upwards
Tcs is spent, for example, adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while during by the operation of the frequency-changeable compressor
Between return 0, restart timing, PID constantly carried out to current refrigerant saturation temperature Tc with the target refrigerant saturation temperature Tcs of renewal
Regulation so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure, indoor temperature is reached sets target as early as possible.Meanwhile,
Current goal refrigerant saturation temperature is recorded, the initial target refrigerant saturation temperature started shooting next time can be used as.
Therefore, the air conditioner system control method of the embodiment of the present invention can be heated according to the influence of system indoor load situation is
The situation of system operational factor is identified and judged, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system
Ability play in time, reach design temperature requirement.
In one embodiment of the invention, when mode of operation is refrigeration mode, entered by being arranged on frequency-changeable compressor
First pressure sensor at mouthful obtains first pressure detection signal.
Wherein, when air-conditioning system is single cooler, first pressure need to be only set to sense at the muffler of frequency-changeable compressor
Frequency conversion compressor return air low-pressure lateral pressure when device is to detect air-conditioning system refrigeration.
In another embodiment of the present invention, when mode of operation is heating mode, by being arranged on frequency-changeable compressor
The second pressure sensor in exit obtains second pressure detection signal.That is, when air-conditioning system is air conditioner, also needing
Frequency conversion compressor air-discharging is high when setting second pressure sensor at the blast pipe of frequency-changeable compressor to detect that air-conditioning system is heated
Press lateral pressure.It is low-pressure lateral pressure during refrigeration, substantially it is of course also possible to assemble a pressure sensor behind four-way valve
It is suitable with back pressure.It is high side pressure when heating, it is substantially suitable with pressure at expulsion.
In step S803, VFC is carried out to frequency-changeable compressor according to target refrigerant saturation temperature, further comprised：
S11, selects first pressure detection signal and second pressure to detect that the generation of one of signal is current cold according to mode of operation
Matchmaker's saturation temperature.
S12, VFC is carried out according to current refrigerant saturation temperature and target refrigerant saturation temperature to frequency-changeable compressor.
Also, in one embodiment of the invention, above-mentioned air conditioner system control method also includes：, will when shutting down
Target refrigerant saturation temperature after adjustment is used as target refrigerant saturation temperature during outdoor unit start next time.
According to one embodiment of present invention, controller enters line delay certain time example when receiving machine open/close signal
Handle within such as S seconds, to prevent client from causing outdoor unit to start operating because of maloperation selection, it is to avoid the controller progress mistake of outdoor unit
Judge.That is, after the switching on and shutting down for receiving outdoor unit are instructed, control outdoor unit delay preset time is opened for such as S seconds
Machine or shutdown.
Air conditioner system control method according to embodiments of the present invention, by obtaining target refrigerant saturation temperature come to outdoor unit
Frequency-changeable compressor carry out VFC, and in the control process to frequency-changeable compressor, according to the frequency-changeable compressor of acquisition
Running frequency or running current and run time adjustment target refrigerant saturation temperature, are achieved independently of indoor set and frequency conversion are compressed
Machine carries out VFC, without indoor set and outdoor unit specifically communicate to transmit corresponding control parameter, reduces control
Parameter transmitting procedure processed, reduces the complexity of air-conditioning system, improves air-conditioning system operational reliability.And so that air-conditioning
The ability of system is played in time.
The outdoor unit of air-conditioning system proposed according to embodiments of the present invention described with reference to the accompanying drawings.
Fig. 7 is the block diagram of the outdoor unit of the air-conditioning system according to the embodiment of the present invention.As shown in fig. 7, the air-conditioning
The outdoor unit 2 of system includes frequency-changeable compressor Mc and controller 21.
Wherein, controller 21 is used to be controlled frequency-changeable compressor, and controller 21 includes：Starting module 201, mesh
Mark refrigerant saturation temperature control module 202 and VFC module 203（Compressor output frequency control module 211）.
Starting module 201 is used for the mode of operation for obtaining air-conditioning system, and starts sky according to the mode of operation of air-conditioning system
The frequency-changeable compressor Mc of the outdoor unit of adjusting system.Target refrigerant saturation temperature control module 202 is used to obtain target refrigerant saturation
Temperature, and during the VFC to frequency-changeable compressor Mc, according to frequency-changeable compressor Mc operational factor to target refrigerant
Saturation temperature is adjusted, further, during the VFC to frequency-changeable compressor, the control of target refrigerant saturation temperature
Module 202 obtains the run time of frequency-changeable compressor and the running frequency or running current of frequency-changeable compressor, and according to change
The run time of frequency compressor and the running frequency of frequency-changeable compressor or running current are adjusted to target refrigerant saturation temperature
It is whole.VFC module 203（Compressor output frequency control module 211）For according to target refrigerant saturation temperature to frequency conversion pressure
Contracting machine Mc carries out VFC.
In one embodiment of the invention, target refrigerant saturation temperature control module 202 is additionally operable to adjust when shutting down
Target refrigerant saturation temperature after whole is used as target refrigerant saturation temperature during start next time of outdoor unit 2.
As shown in Figure 1B, outdoor unit 2 also includes：The first pressure sensor 23 of frequency-changeable compressor porch is arranged on, the
One pressure sensor 23 generation first pressure detection signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single
During cold, it only need to set first pressure sensor 23 at frequency-changeable compressor Mc muffler to detect air-conditioning system refrigeration time-varying
Frequency compressor Mc return-air low-pressure lateral pressures.
According to one embodiment of present invention, as shown in Fig. 2 outdoor unit 2 also includes：It is arranged on frequency-changeable compressor exit
Second pressure sensor 24, second pressure sensor 24 mode of operation be heating mode when generation second pressure detection letter
Number.That is, when air-conditioning system is air conditioner, need to also set second pressure to sense at frequency-changeable compressor Mc blast pipe
Frequency-changeable compressor Mc is vented high side pressure when device 24 is to detect that air-conditioning system is heated.It is of course also possible to be filled behind four-way valve
It is low-pressure lateral pressure during refrigeration with a pressure sensor, it is substantially suitable with back pressure.It is high pressure side pressure when heating
Power is substantially suitable with pressure at expulsion.
Wherein, target refrigerant saturation temperature control module 202 selects first pressure detection signal and the according to mode of operation
One of two pressure detecting signals generate current refrigerant saturation temperature, and obtain target refrigerant saturation temperature, VFC module 203
VFC is carried out to frequency-changeable compressor Mc according to current refrigerant saturation temperature, target refrigerant saturation temperature.
As shown in Figure 1B or Fig. 2, outdoor unit 2 also includes：Temperature sensor 25, the detection outdoor unit 2 of temperature sensor 25 institute
Locate the current environmental temperature of environment, wherein, if outdoor unit 2 starts for the first time within the default work period, target refrigerant is satisfied
Target refrigerant saturation temperature is determined according to the current environmental temperature of outdoor unit 2 with temperature control modules 202.It should be noted that
The default work period should broadly understood, and can be several years, or some months.For example, when outdoor unit 2 is closed in summer
Afterwards, just it is then turned on until winter, when at this moment starting for the first time if in the winter after some months, target refrigerant saturation temperature control
Molding block 202 determines target refrigerant saturation temperature, rather than last shutdown according to the current environmental temperature of outdoor unit 2（It is several
Summer before month）Target refrigerant saturation temperature after Shi Jilu adjustment.
In one embodiment of the invention, when the run time of frequency-changeable compressor is more than or equal to four time thresholds,
And the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or the current running current of frequency-changeable compressor is big
When equal to predetermined current threshold, target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation according to default step-length
Temperature.
Wherein, when the mode of operation is heating mode, target refrigerant saturation temperature control module 202 is according to default step
Long increase target refrigerant saturation temperature, and the run time of frequency-changeable compressor is returned 0；When mode of operation is refrigeration mode, mesh
Mark refrigerant saturation temperature control module 202 and reduce target refrigerant saturation temperature according to default step-length, and by the fortune of frequency-changeable compressor
The row time returns 0.
Specifically, as shown in figure 4, in a heating mode, being configured with outdoor unit 2 and detecting refrigerant high side pressure value
Second pressure sensor 24, starting module 201 according to the mode selection command control signal received and switching on and shutting down instruction control
Signal processed controls frequency-changeable compressor heating operation.
Also, if indoor set was started for the first time in the default work period, target refrigerant saturation temperature control module 202
Target refrigerant saturation temperature Tcs is then determined according to the current environmental temperature of outdoor unit, for example, outdoor environment temperature 7-10 DEG C it
Between, it is determined that initial target refrigerant saturation temperature be 46 DEG C.If indoor set was started for the first time in the default work period, mesh
The target refrigerant saturation temperature that mark refrigerant saturation temperature control module 202 is recorded when then being shut down according to the last time is started shooting as this
When initial target refrigerant saturation temperature.
Then the second pressure that target refrigerant saturation temperature control module 202 is generated according to second pressure sensor 24 is detected
The current refrigerant saturation temperature Tc of signal generation, then VFC module 203 according to target refrigerant saturation temperature Tcs to current cold
Matchmaker's saturation temperature Tc constantly carries out PID regulations.
In the present embodiment, it is more than or equal to the 4th time threshold such as certain time E in the run time of frequency-changeable compressor
Minute（30 minutes）Afterwards, current operation frequency and default frequency of the target refrigerant saturation temperature control module 202 to frequency-changeable compressor
Such as F hertz of rate threshold value is compared to judge whether to need to be modified target refrigerant saturation temperature Tcs, or target is cold
Matchmaker's saturation temperature control module 202 is compared to the current running current of frequency-changeable compressor with predetermined current threshold
It is no to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor is run E minute, and frequency-changeable compressor current operation frequency more than or equal to F hertz or
The current flow of frequency-changeable compressor is more than or equal to predetermined current threshold, it is possible to determine that the indoor heating load of air-conditioning system compares
Greatly, target refrigerant saturation temperature control module 202 adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly upwards
Target refrigerant saturation temperature Tcs is corrected, for example, adjusts Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, while will be described
The run time of frequency-changeable compressor returns 0, restarts timing, full to current refrigerant with the target refrigerant saturation temperature Tcs of renewal
PID regulations are constantly carried out with temperature Tc, VFC module 203 causes frequency-changeable compressor to improve rotating speed, high pressure is improved as early as possible
Go out pressure, indoor temperature is reached sets target.Meanwhile, the record current goal of target refrigerant saturation temperature control module 202 is cold
Matchmaker's saturation temperature, can be used as the initial target refrigerant saturation temperature started shooting next time.
Therefore, the outdoor unit of the air-conditioning system of the embodiment of the present invention can be heated according to the influence of system indoor load situation is
The situation of system operational factor is identified and judged, so as to intelligently adjust the running frequency of frequency-changeable compressor, makes air-conditioning system
Ability play in time, reach design temperature requirement.
In embodiment 1, as shown in figure 3, in cooling mode, target refrigerant saturation temperature control module 202 is to target
The adjustment process of refrigerant saturation temperature and the adjustment process class in embodiment 2 in a heating mode to target refrigerant saturation temperature
Seemingly, just no longer repeat one by one here.
The outdoor unit of air-conditioning system according to embodiments of the present invention, by obtaining target refrigerant saturation temperature come to frequency conversion pressure
Contracting machine carries out VFC, and in the control process to frequency-changeable compressor, according to the running frequency of the frequency-changeable compressor of acquisition
Or running current and run time adjustment target refrigerant saturation temperature, therefore can be obtained without carrying out particular communication with indoor set
The control parameter that must be controlled to frequency-changeable compressor, realizes and carries out VFC to frequency-changeable compressor so that air-conditioning system
Structure becomes simpler, greatly reduces cost, and make it that the ability of air-conditioning system is played in time.
In addition, embodiments of the invention also proposed a kind of air-conditioning system, it includes the above embodiment of the present invention description
The outdoor unit of air-conditioning system.
Air-conditioning system according to embodiments of the present invention, outdoor unit is according to the operational factor of frequency-changeable compressor to frequency-changeable compressor
VFC is carried out, control parameter is obtained without indoor set or without outdoor unit and indoor set progress particular communication so that
The structure of air-conditioning system becomes simpler, greatly reduces cost.
Any process described otherwise above or method description are construed as in flow chart or herein, represent to include
Module, fragment or the portion of the code of one or more executable instructions for the step of realizing specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list for the executable instruction for realizing logic function, it may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment（As computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction）Use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress for combining these instruction execution systems, device or equipment and using
Put.The more specifically example of computer-readable medium（Non-exhaustive list）Including following：Electricity with one or more wirings
Connecting portion（Electronic installation）, portable computer diskette box（Magnetic device）, random access memory（RAM）, read-only storage
（ROM）, erasable edit read-only storage（EPROM or flash memory）, fiber device, and portable optic disk is read-only deposits
Reservoir（CDROM）.In addition, can even is that can be in the paper of printing described program thereon or other are suitable for computer-readable medium
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array（PGA）, scene
Programmable gate array（FPGA）Deng.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
Rapid to can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is realized using in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (13)
1. a kind of air conditioner system control method, it is characterised in that comprise the following steps：
Obtain the mode of operation of air-conditioning system, and the frequency conversion pressure of the outdoor unit according to the mode of operation startup air-conditioning system
Contracting machine；
Obtain target refrigerant saturation temperature；
When the mode of operation is refrigeration mode, by the first pressure sensor for being arranged on the frequency-changeable compressor porch
Obtain first pressure detection signal；
When the mode of operation is heating mode, by the second pressure sensor for being arranged on the frequency-changeable compressor exit
Obtain second pressure detection signal；
Select the generation of one of the first pressure detection signal and second pressure detection signal current cold according to the mode of operation
Matchmaker's saturation temperature, and the frequency-changeable compressor is entered according to the current refrigerant saturation temperature and the target refrigerant saturation temperature
Row VFC；
During the VFC to the frequency-changeable compressor, the run time of the frequency-changeable compressor and the change are obtained
The running frequency or running current of frequency compressor；And
According to the run time of the frequency-changeable compressor and the running frequency or running current of the frequency-changeable compressor to described
Target refrigerant saturation temperature is adjusted.
2. air conditioner system control method as claimed in claim 1, it is characterised in that received by the communicator of the outdoor unit
Switching on and shutting down instruction and mode selection command that remote control, line control machine or indoor set are sent, to obtain the work of the air-conditioning system
Operation mode.
3. air conditioner system control method as claimed in claim 1, it is characterised in that also include：
It is when shutting down, the target refrigerant saturation temperature after adjustment is cold as target during outdoor unit start next time
Matchmaker's saturation temperature.
4. air conditioner system control method as claimed in claim 1, it is characterised in that the fortune according to the frequency-changeable compressor
The running frequency or running current of row time and the frequency-changeable compressor target refrigerant saturation temperature is adjusted into
One step includes：
Judge whether the run time of the frequency-changeable compressor is more than or equal to the 4th time threshold；
If it is determined that the run time of the frequency-changeable compressor is more than or equal to the 4th time threshold, then the frequency conversion is obtained
The current operation frequency of compressor or current running current；
Judge whether the current operation frequency of the frequency-changeable compressor is more than or equal to predeterminated frequency threshold value, or the frequency conversion pressure
Whether the current running current of contracting machine is more than or equal to predetermined current threshold；
If the current operation frequency of the frequency-changeable compressor is more than or equal to the predeterminated frequency threshold value, or the frequency conversion pressure
The current running current of contracting machine is more than or equal to the predetermined current threshold, then adjusting the target refrigerant according to default step-length satisfies
And temperature.
5. air conditioner system control method as claimed in claim 4, it is characterised in that wherein,
When the mode of operation is heating mode, the target refrigerant saturation temperature is increased according to the default step-length, and will
The run time of the frequency-changeable compressor returns 0；
When the mode of operation is refrigeration mode, the target refrigerant saturation temperature is reduced according to the default step-length, and will
The run time of the frequency-changeable compressor returns 0.
6. air conditioner system control method as claimed in claim 1, it is characterised in that the acquisition target refrigerant saturation temperature is entered
One step includes：
If the outdoor unit starts for the first time within the default work period, the current environment temperature of the outdoor unit is detected
Degree；And
The target refrigerant saturation temperature is determined according to the current environmental temperature of the outdoor unit.
7. air conditioner system control method as claimed in claim 1, it is characterised in that also include：
After the switching on and shutting down for receiving the outdoor unit are instructed, control the outdoor unit delay preset time start or shut down.
8. a kind of outdoor unit of air-conditioning system, it is characterised in that including：
Frequency-changeable compressor；
Controller, the controller is used to be controlled the frequency-changeable compressor, and the controller includes：
Starting module, the mode of operation for obtaining air-conditioning system, and according to starting the mode of operation of the air-conditioning system
The frequency-changeable compressor of the outdoor unit of air-conditioning system；
Target refrigerant saturation temperature control module, for obtaining target refrigerant saturation temperature, and to the frequency-changeable compressor
During VFC, the run time of the frequency-changeable compressor and running frequency or the operation of the frequency-changeable compressor are obtained
Electric current, and run time and the running frequency or running current pair of the frequency-changeable compressor according to the frequency-changeable compressor
The target refrigerant saturation temperature is adjusted；
VFC module, for carrying out VFC to the frequency-changeable compressor according to the target refrigerant saturation temperature；
Wherein, the outdoor unit also includes：
The first pressure sensor of the frequency-changeable compressor porch is arranged on, the first pressure sensor is in the Working mould
Generation first pressure detection signal when formula is refrigeration mode；
The second pressure sensor in the frequency-changeable compressor exit is arranged on, the second pressure sensor is in the Working mould
Generation second pressure detection signal when formula is heating mode；
The target refrigerant saturation temperature control module always according to the mode of operation select the first pressure detect signal and
One of the second pressure detection signal current refrigerant saturation temperature of generation, the VFC module is full always according to the current refrigerant
VFC is carried out to the frequency-changeable compressor with temperature, the target refrigerant saturation temperature.
9. the outdoor unit of air-conditioning system as claimed in claim 8, it is characterised in that the target refrigerant saturation temperature controls mould
Block, is additionally operable to regard the target refrigerant saturation temperature after adjustment as mesh during outdoor unit start next time when shutting down
Mark refrigerant saturation temperature.
10. the outdoor unit of air-conditioning system as claimed in claim 8, it is characterised in that in the operation of the frequency-changeable compressor
Between be more than or equal to four time thresholds when, and the frequency-changeable compressor current operation frequency be more than or equal to predeterminated frequency threshold value or
When the current running current of frequency-changeable compressor described in person is more than or equal to predetermined current threshold, the target refrigerant saturation temperature control
Module adjusts the target refrigerant saturation temperature according to default step-length.
11. the outdoor unit of air-conditioning system as claimed in claim 10, it is characterised in that wherein,
When the mode of operation is heating mode, the target refrigerant saturation temperature control module increases according to the default step-length
Plus the target refrigerant saturation temperature, and the run time of the frequency-changeable compressor is returned 0；
When the mode of operation is refrigeration mode, the target refrigerant saturation temperature control module subtracts according to the default step-length
Few target refrigerant saturation temperature, and the run time of the frequency-changeable compressor is returned 0.
12. the outdoor unit of air-conditioning system as claimed in claim 8, it is characterised in that also include：
Temperature sensor, the temperature sensor detects the current environmental temperature of the outdoor unit local environment, wherein, if institute
When stating outdoor unit and starting for the first time within the default work period, the target refrigerant saturation temperature control module is according to the outdoor
The current environmental temperature of machine determines the target refrigerant saturation temperature.
13. a kind of air-conditioning system, it is characterised in that include the outdoor of the air-conditioning system as described in claim any one of 8-12
Machine.
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| CN201410028569.9A CN104791945B (en) | 2014-01-21 | 2014-01-21 | Air-conditioning system and its control method, the outdoor unit of air-conditioning system |
| US14/472,049 US9879893B2 (en) | 2014-01-21 | 2014-08-28 | Air conditioning system, method for controlling air conditioning system, and outdoor apparatus of air conditioning system |
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| CN201410028569.9A CN104791945B (en) | 2014-01-21 | 2014-01-21 | Air-conditioning system and its control method, the outdoor unit of air-conditioning system |
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| CN104791945B true CN104791945B (en) | 2017-10-31 |
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| CN110469947B (en) * | 2019-08-29 | 2021-04-23 | 重庆美的通用制冷设备有限公司 | Protection control method and system for air conditioner, air conditioner and readable storage medium |
| CN114877496B (en) * | 2022-03-31 | 2023-09-08 | 宁波奥克斯电气股份有限公司 | Compressor frequency control method and device and multi-split air conditioner unit |
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| CN1214436A (en) * | 1997-09-30 | 1999-04-21 | 松下电器产业株式会社 | Air conditioner and refrigerant heater outlet temperature control method |
| JP4031261B2 (en) * | 2002-02-28 | 2008-01-09 | 松下電器産業株式会社 | Air conditioner |
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