CN104791941B - 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 PDF

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Publication number
CN104791941B
CN104791941B CN201410027893.9A CN201410027893A CN104791941B CN 104791941 B CN104791941 B CN 104791941B CN 201410027893 A CN201410027893 A CN 201410027893A CN 104791941 B CN104791941 B CN 104791941B
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China
Prior art keywords
frequency
saturation temperature
changeable compressor
refrigerant saturation
air
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CN201410027893.9A
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CN104791941A (en
Inventor
罗彬�
魏富党
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201410027893.9A priority Critical patent/CN104791941B/en
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Classifications

    • 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
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • 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
    • F24F2110/40—Pressure, e.g. wind pressure

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (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 is obtained；When the run time of the frequency-changeable compressor is more than or equal to the 5th time threshold and the frequency-changeable compressor did not stopped machine, the target refrigerant saturation temperature is adjusted according to default step-length.The air conditioner system control method can carry out VFC independently of indoor set and 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 with the air-conditioning system.

Description

Air-conditioning system and its control method, the outdoor unit of air-conditioning system
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 the continuous development of 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 installation are it has to be ensured that synchronous, supporting.
As shown in Figure 1A, outdoor unit must receive from interior the framework of existing frequency-conversion air-conditioning system in the course of the work A series of signals such as the switching on and shutting down of the indoor set of specific transmission that machine is sent rule, temperature setting, indoor temperature or by interior Signal after machine processing, so as to 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 and to the frequency-changeable compressor of outdoor unit, reduce control parameter transmitting procedure, The complexity of air-conditioning system is reduced, improves air-conditioning system operational reliability.
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 proposes, its feature It is, comprises the following steps：The mode of operation of air-conditioning system is obtained, and the air-conditioning system is started according to the mode of operation The frequency-changeable compressor of outdoor unit；Obtain target refrigerant saturation temperature；According to the target refrigerant saturation temperature to the frequency conversion pressure Contracting machine carries out VFC；During the VFC to the frequency-changeable compressor, the operation of the frequency-changeable compressor is obtained Time；And when the run time of the frequency-changeable compressor was not stopped more than or equal to the 5th time threshold and the frequency-changeable compressor During machine, the target refrigerant saturation temperature is adjusted according to default step-length.
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, when obtaining the operation of frequency-changeable compressor Between, when the run time of frequency-changeable compressor is more than or equal to the 5th time threshold and frequency-changeable compressor did not stopped machine, according to default Step-length adjusts target refrigerant saturation temperature, and VFC is carried out to frequency-changeable compressor so as to be achieved independently of indoor set, without Indoor set and outdoor unit carry out specific communication to transmit corresponding control parameter, reduce control parameter transmitting procedure, reduce The complexity of air-conditioning system, improves air-conditioning system operational reliability.And so that the ability of air-conditioning system is sent out in time Wave.
According to one embodiment of present invention, remote control, line control machine or room are received by the communicator of the outdoor unit The 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 target refrigerant saturation temperature during as outdoor unit start next time.
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 another embodiment of the invention, when the mode of operation is heating mode, by being arranged on the change Second pressure sensor at frequency 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 controls, and further comprises：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 instruct, control The start of outdoor unit delay preset time or shutdown.
To reach above-mentioned purpose, a kind of outdoor unit for air-conditioning system that second aspect of the present invention embodiment proposes, including：Become Frequency compressor；Controller, the controller are used to be controlled the frequency-changeable compressor, and the controller includes：Start mould Block, for obtaining the mode of operation of air-conditioning system, and according to the outdoor of the mode of operation of the air-conditioning system startup air-conditioning system The frequency-changeable compressor of machine；Target refrigerant saturation temperature control module, for obtaining target refrigerant saturation temperature, and to the change During the VFC of frequency compressor, the run time of the frequency-changeable compressor is obtained, and when the frequency-changeable compressor Run time is more than or equal to the 5th time threshold and the frequency-changeable compressor did not stopped target refrigerant saturation temperature control during machine Molding block adjusts the target refrigerant saturation temperature according to default step-length；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, obtains the run time of frequency-changeable compressor, work as frequency conversion The run time of compressor was more than or equal to the 5th time threshold and frequency-changeable compressor when not stopping machine, and mesh is adjusted according to default step-length Refrigerant saturation temperature is marked, therefore the control being controlled to frequency-changeable compressor can be obtained without carrying out particular communication with indoor set Parameter processed, realize and VFC is carried out to frequency-changeable compressor so that the structure of air-conditioning system 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 Target refrigerant saturation temperature when the target refrigerant saturation temperature after adjustment is started shooting next time as the outdoor unit.
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；In the Working mould When formula is refrigeration mode, the target refrigerant saturation temperature control module reduces the target refrigerant 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：The first pressure for being arranged on the frequency-changeable compressor porch passes Sensor, the first pressure sensor generate first pressure detection signal when the mode of operation is refrigeration mode.
According to another embodiment of the invention, in addition to：It is arranged on the second pressure in the frequency-changeable compressor exit Sensor, the second pressure sensor generate 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 Select one of described first pressure detection signal and second pressure detection signal and generate current refrigerant saturation temperature, 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.
According to one embodiment of present invention, in addition to：Temperature sensor, the temperature sensor detect 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.
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 propose.
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, without indoor set or particular communication is carried out without outdoor unit and indoor set and obtains control parameter 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 it is readily appreciated that, wherein：
Figure 1A is the Organization Chart of existing frequency-conversion air-conditioning system；
Figure 1B is the Organization Chart according to the air-conditioning system of one embodiment of the invention；
Fig. 2 is the Organization Chart according to the air-conditioning system of another embodiment of the present invention；
Fig. 3 is the control logic schematic diagram according to the air-conditioning system of embodiment 1；
Fig. 4 is the control logic schematic diagram according to the air-conditioning system of embodiment 2；
Fig. 5 is the flow chart according to the air conditioner system control method of the embodiment of the present invention；
Fig. 6 is the flow chart according to the air conditioner system control method of one embodiment of the invention；And
Fig. 7 is the block diagram according to the outdoor unit of the air-conditioning system of 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 example, 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 examples, 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 mechanical connection or electrical connection or the connection of two element internals, can To be to be joined directly together, can also be indirectly connected 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 describe to propose according to embodiments of the present invention air-conditioning system, air conditioner system control method and The outdoor unit of air-conditioning system.
First, the air-conditioning system that embodiment proposes with reference to the accompanying drawings to describe the present invention.
Figure 1B is the Organization Chart according to the air-conditioning system of 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 and to frequency-changeable compressor Mc carry out VFC.
Also, outdoor unit 2 also includes communicator 22, communicator 22 is used to receiving remote control 3, line control machine 4 directly transmits or The 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 With mode selection command corresponding to mode of operation to frequency-changeable compressor Mc carry out VFC.Specifically, as shown in Figure 1B, communicate Device 22 is signal receiving module, and is only received by control signal receiving module and directly transmitted 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 The 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 controls 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 generates first pressure detection signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single During cold, only first pressure sensor 23 need to be set 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, second pressure sensor 24 generate second pressure detection when mode of operation is heating mode Signal.That is, when air-conditioning system is air conditioner, second pressure need to be also set to pass at frequency-changeable compressor Mc blast pipe Frequency-changeable compressor Mc exhaust high side pressures when sensor 24 is to detect air-conditioning system heating.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 during heating Power is substantially suitable with pressure at expulsion.
Wherein, controller 21 selects first pressure detection signal and second pressure detection 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 is when shutting down, using the target refrigerant saturation temperature after adjustment as initial target refrigerant during start next time of outdoor unit 2 Saturation temperature.
Also, as shown in Figure 1B or Fig. 2, outdoor unit 2 also includes temperature sensor 25, and temperature sensor 25 detects outdoor unit 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, it can be several years, or some months.For example, after outdoor unit 2 is being closed summer, 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 21 determines 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 gathers is sent to controller 21 after being handled.Wherein, controller 21 controls 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, when frequency-changeable compressor Mc operational factor includes the operation of frequency-changeable compressor Between.Also, when frequency-changeable compressor Mc run time is more than or equal to the 5th time threshold and frequency-changeable compressor did not stopped machine, control Device 21 processed 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 is according to the mode selection command control signal and switching on and shutting down command control signal system received The startup-shutdown operation of cooling system.Wherein, controller 21 enters such as S seconds line delay certain time when receiving machine open/close signal Processing, to prevent client because maloperation selection causes outdoor unit 2 to start operating, avoid the controller of outdoor unit from carrying out mistake and sentence It is disconnected.That is, controller, after switching on and shutting down instruction is received, the delay preset time such as S seconds start shooting or shut down.
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 records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure detection signal that controller generates according to first pressure sensor 23 generates current refrigerant saturation Temperature Te, PID regulations are constantly carried out to current refrigerant saturation temperature Te then according to target refrigerant saturation temperature Tes.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 （Such as before 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 are pre-set constant, △ E1, △ e0 are the feedback variable monitored in real time.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to judge whether to need to be modified target refrigerant saturation temperature Tes.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor cooling load of system is bigger, and controller adjusts target refrigerant saturation temperature Tes according to default step-length, i.e., constantly downwards Target refrigerant saturation temperature Tes, such as adjustment Tes=Tes-1, more fresh target refrigerant saturation temperature Tes are corrected, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, and current refrigerant is satisfied with the target refrigerant saturation temperature Tes of renewal PID regulations are constantly carried out with temperature Te so that frequency-changeable compressor, which improves rotating speed, reduces suction pressure, indoor temperature is reached setting Target.Meanwhile current goal refrigerant saturation temperature is recorded, can be 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 ginseng according to system indoor load situation Several situations is identified and judged, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui, reach design temperature requirement.
【Embodiment 2】
As shown in figure 4, in a heating mode, it is also configured with detecting the second of refrigerant high side pressure value on outdoor unit 2 Pressure sensor 24, outdoor unit 2 are carried out according to the mode selection command control signal and switching on and shutting down command control signal received The startup-shutdown operation of heating.Wherein, controller 21 enters line delay certain time such as S when receiving machine open/close signal Second processing, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, avoiding the controller progress mistake of outdoor unit from sentencing It is disconnected.
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 detection signal that controller generates according to second pressure sensor 24 generates current refrigerant saturation Temperature Tc, PID regulations are constantly carried out to current refrigerant saturation temperature Tc then according to target refrigerant saturation temperature Tcs.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to judge whether to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor heating load of system is bigger, and controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly upwards Target refrigerant saturation temperature Tcs, such as adjustment Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs are corrected, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, and current refrigerant is satisfied with the target refrigerant saturation temperature Tcs of renewal PID regulations are constantly carried out with temperature Tc so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure as early as possible, makes Indoor Temperature Degree reaches sets target.Meanwhile current goal refrigerant saturation temperature is recorded, can be as the initial target refrigerant started shooting next time Saturation temperature.
Therefore, the air-conditioning system of the embodiment of the present invention can influence heating operation ginseng according to system indoor load situation Several situations is identified and judged, so as to intelligently adjust frequency-changeable compressor running frequency, make air-conditioning system ability and Shi Fahui, reach 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 the start-stop for the startup-shutdown instruction control outdoor unit sent according to line control machine, remote control or indoor set.This hair The air-conditioning system of bright embodiment can be under machine and outdoor unit communicate without control parameter indoors refrigeration and/or heating mode Frequency-changeable compressor is controlled, the controller of outdoor unit being capable of the rapid electrical equipment for controlling the outdoor units such as frequency-changeable compressor of autonomous learning completion Part, so that indoor temperature reaches and maintains design temperature.
According to an embodiment of the invention, controller 21 enters line delay certain time for example when receiving machine open/close signal The S seconds are handled, to prevent client from, because maloperation selection causes outdoor unit 2 to start operating, avoiding the controller of outdoor unit from carrying out mistake Judge.That is, controller, after switching on and shutting down instruction is received, the delay preset time such as S seconds start shooting or shut down.
Air-conditioning system according to embodiments of the present invention, the controller of the outdoor unit in air-conditioning system is according to frequency-changeable compressor Operational factor carries out VFC independently of indoor set and 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 according to the air conditioner system control method of the embodiment of the present invention.As shown in figure 5, the air-conditioning system Control method comprises the following steps：
S1, obtain the operational factor of the frequency-changeable compressor of the outdoor unit of air-conditioning system.
S2, the indoor set pair using the controller of outdoor unit according to 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 collects 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 and to frequency-changeable compressor, without indoor set and outdoor unit carry out specific communication with Corresponding control parameter is transmitted, reduces control parameter transmitting procedure, reduces the complexity of air-conditioning system, improves air-conditioning system 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, obtain 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, obtain 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 to frequency-changeable compressor according to target refrigerant saturation temperature.
S804, during the VFC to frequency-changeable compressor, obtain the run time of frequency-changeable compressor.
S805, when the run time of frequency-changeable compressor did not stopped machine more than or equal to the 5th time threshold and frequency-changeable compressor When, adjust 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 by described in 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 is according to the mode selection command control signal and switching on and shutting down command control signal system received The startup-shutdown operation of cooling system.
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 records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the first pressure detection signal that controller generates according to first pressure sensor 23 generates current refrigerant saturation Temperature Te, PID regulations are constantly carried out to current refrigerant saturation temperature Te then according to target refrigerant saturation temperature Tes.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 （Such as before 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 are pre-set constant, △ E1, △ e0 are the feedback variable monitored in real time.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to judge whether to need to be modified target refrigerant saturation temperature Tes.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor cooling load of system is bigger, and controller adjusts target refrigerant saturation temperature Tes according to default step-length, i.e., constantly downwards Target refrigerant saturation temperature Tes, such as adjustment Tes=Tes-1, more fresh target refrigerant saturation temperature Tes are corrected, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, and current refrigerant is satisfied with the target refrigerant saturation temperature Tes of renewal PID regulations are constantly carried out with temperature Te so that frequency-changeable compressor, which improves rotating speed, reduces suction pressure, indoor temperature is reached setting Target.Meanwhile current goal refrigerant saturation temperature is recorded, can be 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 influence refrigeration system according to system indoor load situation 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, it is also configured with detecting the second of refrigerant high side pressure value on outdoor unit 2 Pressure sensor 24, outdoor unit 2 are carried out according to the mode selection command control signal and switching on and shutting down command control signal received The startup-shutdown operation of heating.
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 detection signal that controller generates according to second pressure sensor 24 generates current refrigerant saturation Temperature Tc, PID regulations are constantly carried out to current refrigerant saturation temperature Tc then according to target refrigerant saturation temperature Tcs.
In the present embodiment, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, controller judges Whether frequency-changeable compressor stopped machine to judge whether to need to be modified target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor heating load of system is bigger, and controller adjusts target refrigerant saturation temperature Tcs according to default step-length, i.e., constantly upwards Target refrigerant saturation temperature Tcs, such as adjustment Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs are corrected, while by described in The run time of frequency-changeable compressor returns 0, restarts timing, and current refrigerant is satisfied with the target refrigerant saturation temperature Tcs of renewal PID regulations are constantly carried out with temperature Tc so that frequency-changeable compressor improves rotating speed, improves high pressure discharge pressure as early as possible, makes Indoor Temperature Degree reaches sets target.Meanwhile current goal refrigerant saturation temperature is recorded, can be as the initial target refrigerant started shooting next time Saturation temperature.
Therefore, the air conditioner system control method of the embodiment of the present invention can influence heating system according to system indoor load situation 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 need Frequency conversion compressor air-discharging is high when second pressure sensor is set at the blast pipe of frequency-changeable compressor to detect air-conditioning system heating 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 during 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, select the generation of one of first pressure detection signal and second pressure detection signal current cold according to mode of operation Matchmaker's saturation temperature.
S12, VFC is carried out to frequency-changeable compressor according to current refrigerant saturation temperature and target refrigerant saturation temperature.
Also, in one embodiment of the invention, above-mentioned air conditioner system control method also includes：, will when shutting down Target refrigerant saturation temperature when target refrigerant saturation temperature after adjustment is started shooting next time as outdoor unit.
According to one embodiment of present invention, controller enters line delay certain time example when receiving machine open/close signal As the S seconds are handled, to prevent client from, because maloperation selection causes outdoor unit to start operating, avoiding the controller of outdoor unit from carrying out mistake Judge.That is, after the switching on and shutting down for receiving outdoor unit instruct, the control outdoor unit delay preset time such as S seconds open 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, when obtaining the operation of frequency-changeable compressor Between, when the run time of frequency-changeable compressor is more than or equal to the 5th time threshold and frequency-changeable compressor did not stopped machine, according to default Step-length adjusts target refrigerant saturation temperature, and VFC is carried out to frequency-changeable compressor so as to be achieved independently of indoor set, without Indoor set and outdoor unit carry out specific communication to transmit corresponding control parameter, reduce control parameter transmitting procedure, reduce The complexity of air-conditioning system, improves air-conditioning system operational reliability.And so that the ability of air-conditioning system is sent out in time Wave.
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 according to the outdoor unit of the air-conditioning system of 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 are used to obtain initial 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 Mc, target refrigerant saturation temperature The run time that control module 202 obtains frequency-changeable compressor is spent, and when the run time of frequency-changeable compressor is more than or equal to the 5th Time threshold and frequency-changeable compressor did not stopped target refrigerant saturation temperature control module 202 during machine and adjust target according to default step-length Refrigerant saturation temperature.VFC module 203（Compressor output frequency control module 211）For according to target refrigerant saturation temperature Degree carries out VFC to frequency-changeable compressor Mc.
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 when target refrigerant saturation temperature after whole is as 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 generates first pressure detection signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single During cold, only first pressure sensor 23 need to be set 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 generated when mode of operation is heating mode second pressure detection letter Number.That is, when air-conditioning system is air conditioner, second pressure need to be also set to sense at frequency-changeable compressor Mc blast pipe Frequency-changeable compressor Mc exhaust high side pressures when device 24 is to detect air-conditioning system heating.It is of course also possible to 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 during 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, temperature sensor 25 detect the institute of outdoor unit 2 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.
Wherein, when mode of operation is heating mode, target refrigerant saturation temperature control module 202 increases according to default step-length Add target refrigerant saturation temperature, and the run time of frequency-changeable compressor is returned 0；When mode of operation is refrigeration mode, target is cold Matchmaker's saturation temperature control module 202 reduces target refrigerant saturation temperature according to default step-length, and during by the operation of frequency-changeable compressor Between return 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 records when then being shut down according to the last time is as this start When initial target refrigerant saturation temperature.
Then the second pressure that target refrigerant saturation temperature control module 202 generates according to second pressure sensor 24 detects 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, after the run time of frequency-changeable compressor is more than or equal to the 5th time threshold, target refrigerant is satisfied With temperature control modules 202 by judging whether frequency-changeable compressor stopped machine to judge whether to need to target refrigerant saturation temperature Tcs is modified.
After frequency-changeable compressor runs five time thresholds, and frequency-changeable compressor did not stopped machine, it is possible to determine that air-conditioning system The indoor heating load of system is bigger, and target refrigerant saturation temperature control module 202 adjusts target refrigerant according to default step-length Saturation temperature Tcs, i.e. constantly upwards amendment target refrigerant saturation temperature Tcs, such as adjustment Tcs=Tcs+1, more fresh target refrigerant Saturation temperature Tcs, while the run time of the frequency-changeable compressor is returned 0, restart timing, satisfied with the target refrigerant of renewal PID regulations are constantly carried out to current refrigerant saturation temperature Tc with temperature Tcs, VFC module 203 causes frequency-changeable compressor to carry High rotating speed, high pressure discharge pressure is improved as early as possible, indoor temperature is reached sets target.Meanwhile target refrigerant saturation temperature controls Module 202 records current goal refrigerant saturation temperature, can be 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 influence heating system according to system indoor load situation 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 to target refrigerant saturation temperature in a heating mode in embodiment 2 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, obtains the run time of frequency-changeable compressor, work as frequency conversion The run time of compressor was more than or equal to the 5th time threshold and frequency-changeable compressor when not stopping machine, and mesh is adjusted according to default step-length Refrigerant saturation temperature is marked, therefore the control being controlled to frequency-changeable compressor can be obtained without carrying out particular communication with indoor set Parameter processed, realize and VFC is carried out to frequency-changeable compressor so that the structure of air-conditioning system 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 proposition 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, without indoor set or particular communication is carried out without outdoor unit and indoor set and obtains control parameter so that The structure of air-conditioning system becomes simpler, greatly reduces cost.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss 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.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use In the order list for the executable instruction for realizing logic function, 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 used with reference to these instruction execution systems, device or equipment Put.The more specifically example of computer-readable medium（Non-exhaustive list）Including following：Electricity with one or more wiring 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, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable 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, software that multiple steps or method can be performed in memory and by suitable instruction execution system 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, have suitable combinational logic gate circuit application specific integrated 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 carries Suddenly it is that by program the hardware of correlation can be instructed 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 present 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, can also be realized in the form of software function module.The integrated module is such as Fruit is realized 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 specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.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 (11)

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 one of the first pressure detection signal and second pressure detection signal generation 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 is obtained；And
When the run time of the frequency-changeable compressor is more than or equal to the 5th time threshold and the frequency-changeable compressor did not stopped machine, The target refrigerant saturation temperature is adjusted according to default step-length.
2. air conditioner system control method as claimed in claim 1, it is characterised in that received by the communicator of the outdoor unit The 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 wherein,
When the mode of operation is heating mode, increase the target refrigerant saturation temperature 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.
5. 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.
6. 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 instruct, the start of outdoor unit delay preset time or shutdown are controlled.
A kind of 7. outdoor unit of air-conditioning system, it is characterised in that including：
Frequency-changeable compressor；
Controller, the controller are used to be controlled the frequency-changeable compressor, and the controller includes：
Starting module, start the air-conditioning for obtaining the mode of operation of air-conditioning system, and according to the mode of operation of air-conditioning system The frequency-changeable compressor of the outdoor unit of 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 is obtained, and when the run time of the frequency-changeable compressor is big When machine was not stopped equal to the 5th time threshold and the frequency-changeable compressor target refrigerant saturation temperature control module according to Default step-length adjusts the target refrigerant saturation temperature；
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 First pressure detection signal is generated 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 Second pressure detection signal is generated when formula is heating mode；
The target refrigerant saturation temperature control module always according to the mode of operation select the first pressure detection signal and One of second pressure detection signal generates current refrigerant saturation temperature, and the VFC module is satisfied always according to the current refrigerant VFC is carried out to the frequency-changeable compressor with temperature, the target refrigerant saturation temperature.
8. the outdoor unit of air-conditioning system as claimed in claim 7, it is characterised in that the target refrigerant saturation temperature controls mould Block, it is additionally operable to when shutting down using the target refrigerant saturation temperature after adjustment as mesh during outdoor unit start next time Mark refrigerant saturation temperature.
9. the outdoor unit of air-conditioning system as claimed in claim 7, 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 Add 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.
10. the outdoor unit of air-conditioning system as claimed in claim 7, it is characterised in that also include：
Temperature sensor, the temperature sensor detect 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.
11. 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 7-10 Machine.
CN201410027893.9A 2014-01-21 2014-01-21 Air-conditioning system and its control method, the outdoor unit of air-conditioning system Active CN104791941B (en)

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CN108375257A (en) * 2018-01-04 2018-08-07 青岛海尔空调器有限总公司 Air-conditioner control method and control circuit
CN108332384A (en) * 2018-01-04 2018-07-27 青岛海尔空调器有限总公司 Air-conditioner control method and control circuit
CN108397872A (en) * 2018-01-04 2018-08-14 青岛海尔空调器有限总公司 The control method and control circuit of air conditioner
CN108278713B (en) * 2018-01-19 2021-04-09 珠海格力电器股份有限公司 Pressure control method and device
CN110207264B (en) * 2019-06-26 2021-03-12 广东美的暖通设备有限公司 Control method, indoor unit, and computer-readable storage medium
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