CN104791946A - Air conditioner system, control method of air conditioner system and outdoor unit of the air conditioner system - Google Patents

Air conditioner system, control method of air conditioner system and outdoor unit of the air conditioner system Download PDF

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Publication number
CN104791946A
CN104791946A CN201410028602.8A CN201410028602A CN104791946A CN 104791946 A CN104791946 A CN 104791946A CN 201410028602 A CN201410028602 A CN 201410028602A CN 104791946 A CN104791946 A CN 104791946A
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CN
China
Prior art keywords
frequency
changeable compressor
saturation temperature
refrigerant saturation
current
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Granted
Application number
CN201410028602.8A
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Chinese (zh)
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CN104791946B (en
Inventor
罗彬�
魏富党
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201410028602.8A priority Critical patent/CN104791946B/en
Priority to US14/472,049 priority patent/US9879893B2/en
Publication of CN104791946A publication Critical patent/CN104791946A/en
Application granted granted Critical
Publication of CN104791946B publication Critical patent/CN104791946B/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
    • F24F1/10—Arrangement or mounting thereof
    • 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
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • 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
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • 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
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

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  • Engineering & Computer Science (AREA)
  • 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 an air conditioner system. The air conditioner system comprises an indoor unit and an outdoor unit. The outdoor unit comprises an inverter compressor and a controller. The controller carries out frequency converting control over the inverter compressor according to operating parameters of the inverter compressor in a manner of being independent of the indoor unit. The controller of the outdoor unit in the air conditioner system is independent of the outdoor unit so as to carry out frequency converting control over the inverter compressor of the outdoor unit, and the structure of the air conditioner system becomes simpler, and the cost is greatly reduced. The invention further discloses a control method of the air conditioner system, the outdoor unit of the air conditioner system and the air conditioner system with the outdoor unit.

Description

The off-premises station of air-conditioning system and control method thereof, air-conditioning system
Technical field
The present invention relates to air-conditioning technical field, particularly the off-premises station of a kind of air-conditioning system and air conditioner system control method and air-conditioning system.
Background technology
Along with the development of air-conditioning technical, DC frequency converting air-conditioner is more and more subject to the welcome in market, and its sales volume is also in fast lifting.At present, the convertible frequency air-conditioner on market all needs supporting installation, and indoor set, off-premises station need special supporting communication modes to realize controlling the compressor of off-premises station.Therefore, indoor set, off-premises station installation must ensure synchronous, supporting.
The framework of existing frequency-conversion air-conditioning system as shown in Figure 1A, off-premises station must receive in the course of the work the indoor set of the specific transmission rule sent from indoor set a series of signal such as switching on and shutting down, temperature setting, indoor temperature or by the signal after indoor set process, thus the compressor that could realize controlling off-premises station runs with specific frequency, and regulate the running frequency of compressor according to indoor change at any time.In prior art, need indoor set to send corresponding signal to off-premises station, just can complete the control to all parts in off-premises station, make the structure of air-conditioning system very complicated, with high costs.Therefore, existing air-conditioning system needs to improve.
Summary of the invention
Object of the present invention is intended at least solve above-mentioned technological deficiency.
For this reason, first object of the present invention is to propose a kind of air-conditioning system, the controller of the off-premises station in this air-conditioning system carries out VFC independent of indoor set to the frequency-changeable compressor of off-premises station, makes the structure of air-conditioning system become simple, greatly reduces cost.
Second object of the present invention is to propose a kind of air conditioner system control method.3rd object of the present invention is the off-premises station proposing a kind of air-conditioning system.4th object of the present invention is to also been proposed a kind of air-conditioning system.
For achieving the above object, a kind of air-conditioning system that first aspect present invention embodiment proposes, comprising: indoor set; And off-premises station, described off-premises station comprises: frequency-changeable compressor; And controller, described controller is according to the operational factor of described frequency-changeable compressor and carry out VFC independent of described indoor set to described frequency-changeable compressor.
According to the air-conditioning system of the embodiment of the present invention, the controller of the off-premises station in air-conditioning system carries out VFC independent of indoor set to frequency-changeable compressor according to the operational factor of frequency-changeable compressor, specific communication is carried out to transmit corresponding controling parameters without the need to indoor set and off-premises station, make the structure of air-conditioning system become more simple, greatly reduce cost.
According to one embodiment of present invention, described off-premises station also comprises: communicator, described communicator is for receiving remote controller, line control machine and directly send or switching on and shutting down instruction that described indoor set sends and mode selection command, wherein, described controller carries out VFC according to the operational factor of described frequency-changeable compressor and mode of operation corresponding to described mode selection command to described frequency-changeable compressor.
According to one embodiment of present invention, described off-premises station also comprises: the first pressure sensor being arranged on described frequency-changeable compressor porch, and described first pressure sensor generates the first pressure detecting signal when described mode of operation is refrigeration mode.
According to one embodiment of present invention, described off-premises station also comprises: the second pressure sensor being arranged on described frequency-changeable compressor exit, and described second pressure sensor generates the second pressure detecting signal when described mode of operation is heating mode.
According to one embodiment of present invention, described controller selects one of described first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation, and obtain target refrigerant saturation temperature, and according to described current refrigerant saturation temperature, described target refrigerant saturation temperature, VFC is carried out to described frequency-changeable compressor, wherein, to in the VFC process of described frequency-changeable compressor, described controller adjusts described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor.
According to one embodiment of present invention, described off-premises station also comprises: temperature sensor, described temperature sensor detects the current environmental temperature of environment residing for described off-premises station, wherein, if when described off-premises station starts for the first time within the default work period, described controller determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
According to one embodiment of present invention, described controller when shutting down, using the described target refrigerant saturation temperature after adjustment as initial target refrigerant saturation temperature during start next time of described off-premises station.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor.
According to one embodiment of present invention, the running time of described frequency-changeable compressor be more than or equal to very first time threshold value and the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value time, described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running frequency.
According to one embodiment of present invention, when being more than or equal to the second time threshold the running time of described frequency-changeable compressor, described controller obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively; When running frequency before described current operation frequency is less than described second preset time period or described current running current are less than the running current before described second preset time period, described controller keeps described target refrigerant saturation temperature constant, and running frequency before described current operation frequency is more than or equal to described second preset time period or described current running current are when being more than or equal to the running current before described second preset time period, described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor, wherein be more than or equal to the 3rd time threshold in the running time of described frequency-changeable compressor, the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, and described target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, wherein be more than or equal to the 4th time threshold in the running time of described frequency-changeable compressor, and the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, wherein when the running time of described frequency-changeable compressor is more than or equal to the 5th time threshold and described frequency-changeable compressor did not stop machine, described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, described controller, after receiving described switching on and shutting down instruction, postpones Preset Time start or shutdown.
For achieving the above object, a kind of air conditioner system control method that second aspect present invention embodiment proposes, comprises the following steps: the operational factor obtaining the frequency-changeable compressor of the off-premises station of described air-conditioning system; Independent of the indoor set of described air-conditioning system, VFC is carried out to the frequency-changeable compressor of described off-premises station according to the operational factor of described frequency-changeable compressor with utilizing the controller of described off-premises station.
According to the air conditioner system control method of the embodiment of the present invention, the controller of off-premises station carries out VFC independent of indoor set to frequency-changeable compressor according to the operational factor of frequency-changeable compressor, specific communication is carried out to transmit corresponding controling parameters without the need to indoor set and off-premises station, decrease controling parameters transmitting procedure, reduce the complexity of air-conditioning system, improve air-conditioning system operational reliability.
According to one embodiment of present invention, also comprise: when described mode of operation is refrigeration mode, described controller obtains the first pressure detecting signal by the first pressure sensor being arranged on described frequency-changeable compressor porch.
According to one embodiment of present invention, also comprise: when described mode of operation is heating mode, described controller obtains the second pressure detecting signal by the second pressure sensor being arranged on described frequency-changeable compressor exit.
According to one embodiment of present invention, described controller carries out VFC according to the operational factor of described frequency-changeable compressor to described frequency-changeable compressor and comprises further: described controller selects described first pressure detecting signal or the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation; Described controller obtains target refrigerant saturation temperature; Described controller carries out VFC according to described current refrigerant saturation temperature, described target refrigerant saturation temperature to described frequency-changeable compressor, wherein, to in the VFC process of described frequency-changeable compressor, described controller adjusts described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor.
According to one embodiment of present invention, if when described off-premises station starts for the first time within the default work period, described controller determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
According to one embodiment of present invention, also comprise: when shutting down, described controller is using initial target refrigerant saturation temperature during next as described off-premises station for the described target refrigerant saturation temperature after adjustment start.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to very first time threshold value; If judge to be more than or equal to the described very first time threshold value running time of described frequency-changeable compressor, then described controller obtains the start-stop time of described frequency-changeable compressor in described first preset time period; And if the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the second time threshold; If judge to be more than or equal to described second time threshold the running time of described frequency-changeable compressor, then described controller obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively; If described current operation frequency is less than running frequency before described second preset time period or described current running current and is less than running current before described second preset time period, then described controller keeps described target refrigerant saturation temperature constant; If described current operation frequency is more than or equal to running frequency before described second preset time period or described current running current and is more than or equal to running current before described second preset time period, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 3rd time threshold; If judge to be more than or equal to described 3rd time threshold the running time of described frequency-changeable compressor, then described controller obtains the start-stop time of described frequency-changeable compressor in described 3rd preset time period; And if the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, then described controller judges whether described target refrigerant saturation temperature is more than or equal to default saturation temperature threshold value further; If described target refrigerant saturation temperature is more than or equal to described default saturation temperature threshold value, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 4th time threshold; If judge to be more than or equal to described 4th time threshold the running time of described frequency-changeable compressor, then described controller obtains the current operation frequency of described frequency-changeable compressor or current running current; Judge whether the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value, or whether the current running current of described frequency-changeable compressor is more than or equal to predetermined current threshold; If the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to described predeterminated frequency threshold value or described frequency-changeable compressor is more than or equal to described predetermined current threshold, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 5th time threshold; If judge to be more than or equal to described 5th time threshold the running time of described frequency-changeable compressor and described frequency-changeable compressor did not stop machine, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, also comprise: after the switching on and shutting down instruction receiving described off-premises station, described controller controls described off-premises station and postpones Preset Time start or shutdown.
For achieving the above object, the off-premises station of a kind of air-conditioning system that third aspect present invention embodiment proposes, comprising: frequency-changeable compressor; Controller, described controller is used for controlling described frequency-changeable compressor, described controller comprises: starting module, for obtaining the mode of operation of air-conditioning system, and starting the frequency-changeable compressor of the off-premises station of described air-conditioning system according to the mode of operation of air-conditioning system; Target refrigerant saturation temperature control module, for obtaining initial target refrigerant saturation temperature, and in the VFC process of described frequency-changeable compressor, the operational factor according to described frequency-changeable compressor adjusts described target refrigerant saturation temperature; VFC module, for carrying out VFC according to described target refrigerant saturation temperature to described frequency-changeable compressor.
According to the off-premises station of the air-conditioning system of the embodiment of the present invention, obtaining controling parameters without the need to carrying out particular communication with indoor set, making the structure of air-conditioning system become more simple, greatly reducing cost.
According to one embodiment of present invention, described target refrigerant saturation temperature control module, target refrigerant saturation temperature time also for the described target refrigerant saturation temperature after adjustment being started shooting as described off-premises station is next when shutting down.
According to one embodiment of present invention, also comprise: the first pressure sensor being arranged on described frequency-changeable compressor porch, described first pressure sensor generates the first pressure detecting signal when described mode of operation is refrigeration mode.
According to one embodiment of present invention, also comprise: the second pressure sensor being arranged on described frequency-changeable compressor exit, described second pressure sensor generates the second pressure detecting signal when described mode of operation is heating mode.
According to one embodiment of present invention, described target refrigerant saturation temperature control module selects one of described first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation, and obtaining target refrigerant saturation temperature, described VFC module carries out VFC according to described current refrigerant saturation temperature, described target refrigerant saturation temperature to described frequency-changeable compressor.
According to one embodiment of present invention, also comprise: temperature sensor, described temperature sensor detects the current environmental temperature of environment residing for described off-premises station, wherein, if when described off-premises station starts for the first time within the default work period, described target refrigerant saturation temperature control module determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor.
According to one embodiment of present invention, the running time of described frequency-changeable compressor be more than or equal to very first time threshold value and the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value time, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current.
According to one embodiment of present invention, when being more than or equal to the second time threshold the running time of described frequency-changeable compressor, described target refrigerant saturation temperature control module obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively, when running frequency before described current operation frequency is less than described second preset time period or described current running current are less than the running current before described second preset time period, described target refrigerant saturation temperature control module keeps described target refrigerant saturation temperature constant, and running frequency before described current operation frequency is more than or equal to described second preset time period or described current running current are when being more than or equal to the running current before described second preset time period, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor, wherein be more than or equal to the 3rd time threshold in the running time of described frequency-changeable compressor, the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, and described target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, wherein be more than or equal to the 4th time threshold in the running time of described frequency-changeable compressor, and the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
According to one embodiment of present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, wherein be more than or equal to the 5th time threshold in the running time of described frequency-changeable compressor, and described frequency-changeable compressor was not when stopping machine, described target refrigerant saturation temperature control module adjusted described target refrigerant saturation temperature according to default step-length.
For achieving the above object, fourth aspect present invention embodiment proposes a kind of air-conditioning system, and it comprises the off-premises station of the air-conditioning system that third aspect present invention embodiment proposes.
According to the air-conditioning system of the embodiment of the present invention, the controller of off-premises station carries out VFC according to the operational factor of frequency-changeable compressor to frequency-changeable compressor, carry out particular communication without the need to indoor set or without the need to off-premises station and indoor set and obtain controling parameters, make the structure of air-conditioning system become more simple, greatly reduce cost.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Figure 1A is the Organization Chart of existing frequency-conversion air-conditioning system;
Figure 1B is the Organization Chart of air-conditioning system according to an embodiment of the invention;
Fig. 2 is the Organization Chart of air-conditioning system in accordance with 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 control logic schematic diagram of the air-conditioning system according to embodiment 3;
Fig. 6 is the control logic schematic diagram of the air-conditioning system according to embodiment 4;
Fig. 7 is the control logic schematic diagram of the air-conditioning system according to embodiment 5;
Fig. 8 is the control logic schematic diagram of the air-conditioning system according to embodiment 6;
Fig. 9 is the control logic schematic diagram of the air-conditioning system according to embodiment 7;
Figure 10 is the control logic schematic diagram of the air-conditioning system according to embodiment 8;
Figure 11 is the control logic schematic diagram of the air-conditioning system according to embodiment 9;
Figure 12 is the control logic schematic diagram of the air-conditioning system according to embodiment 10;
Figure 13 is the flow chart of the air conditioner system control method according to the embodiment of the present invention; And
Figure 14 is the block diagram of the off-premises station of air-conditioning system according to the embodiment of the present invention.
Reference numeral:
Indoor set 1: interior machine control signal receiver module 11, interior machine control processor 12, signal transmission module 13, indoor fan 14 and indoor choke valve 15;
Off-premises station 2: frequency-changeable compressor Mc and controller 21, communicator 22, the first pressure sensor 23, second pressure sensor 24, temperature sensor 25, outer blower fan Mf, outer expansion valve Ev, outer cross valve SV and outer machine system protection sensor 26, systematic parameter acquisition module 27;
Remote controller 3;
Line control machine 4;
Controller 21: compressor output frequency control module 211 (VFC module 203), blower fan output control module 212, outer expansion valve output control module 213 and outer cross valve output control module 214, start module 201, target refrigerant saturation temperature control module 202.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The off-premises station of air-conditioning system, air conditioner system control method and the air-conditioning system proposed according to the embodiment of the present invention is described with reference to the accompanying drawings.
First, the air-conditioning system of first aspect embodiment proposition with reference to the accompanying drawings to describe the present invention.
Figure 1B is the Organization Chart of air-conditioning system according to an embodiment of the invention.As shown in Figure 1B, this air-conditioning system comprises indoor set 1 and off-premises station 2.
Wherein, off-premises station 2 comprises frequency-changeable compressor Mc and controller 21, and controller 21 is according to the operational factor of frequency-changeable compressor Mc and carry out VFC independent of indoor set 1 to frequency-changeable compressor Mc.
And, off-premises station 2 also comprises communicator 22, communicator 22 is for receiving the switching on and shutting down instruction and mode selection command that remote controller 3, line control machine 4 directly send or indoor set 1 sends, wherein, controller 21 carries out VFC according to the operational factor of frequency-changeable compressor Mc and mode of operation corresponding to mode selection command to frequency-changeable compressor Mc.Particularly, as shown in Figure 1B, communicator 22 is signal receiving module, and only received the switching on and shutting down command control signal and mode selection command control signal that directly send from remote controller 3, line control machine 4 by control signal receiver module, or received the switching on and shutting down command control signal and mode selection command control signal that send from indoor set 1 by control signal receiver module.
As shown in Figure 1B, indoor set 1 comprises the major electrical equipment parts such as interior machine control signal receiver module 11, interior machine control processor 12, signal transmission module 13, indoor fan 14 and indoor choke valve 15.Indoor fan 14 and indoor choke valve 15 are controlled by interior machine control processor 12, and switching on and shutting down command control signal and mode selection command control signal are transferred to the control signal receiver module of communicator 22 with general transmission rule by signal transmission module 13 by indoor set 1.Wherein, switching on and shutting down command control signal and mode selection command control signal directly can be sent to the communicator 22 in off-premises station 2 by indoor set 1.Or, indoor set 1 receives the switching on and shutting down command control signal and mode selection command control signal that send from remote controller 3, line control machine 4 by interior machine control signal receiver module 11, then switching on and shutting down command control signal and mode selection command control signal are transmitted to the control signal receiver module of communicator 22 with general transmission rule by signal transmission module 13 by indoor set 1.
In an embodiment of the present invention, this air-conditioning system controls start and stop and the model selection of off-premises station according to switching on and shutting down command control signal and mode selection command control signal.
As shown in Figure 1B, off-premises station 2 also comprises the first pressure sensor 23, first pressure sensor 23 being arranged on frequency-changeable compressor Mc porch and generates the first pressure detecting signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single cooler, the first pressure sensor 23 only need be set at the muffler place of frequency-changeable compressor Mc to detect frequency-changeable compressor Mc return-air low-pressure lateral pressure when air-conditioning system is freezed.
In another embodiment of the present invention, as shown in Figure 2, off-premises station 2 also comprises the second pressure sensor 24, second pressure sensor 24 being arranged on frequency-changeable compressor Mc exit and generates the second pressure detecting signal when mode of operation is heating mode.That is, when air-conditioning system is air conditioner, the second pressure sensor 24 also need be set at the blast pipe place of frequency-changeable compressor Mc and be vented high side pressure to detect frequency-changeable compressor Mc when air-conditioning system heats.Certainly, also can assemble a pressure sensor after cross valve, be low-pressure lateral pressure during refrigeration, basic suitable with back pressure.High side pressure when heating, basic suitable with pressure at expulsion.
Wherein, controller 21 selects one of the first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to mode of operation, and obtain target refrigerant saturation temperature, and according to current refrigerant saturation temperature, target refrigerant saturation temperature, VFC is carried out to frequency-changeable compressor Mc, wherein, to in the VFC process of frequency-changeable compressor Mc, controller 21 adjusts target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor Mc.In an embodiment of the present invention, controller 21 shut down time, using adjustment after target refrigerant saturation temperature as off-premises station 2 next time start time initial target refrigerant saturation temperature.
And, as shown in Figure 1B or Fig. 2, off-premises station 2 also comprises temperature sensor 25, temperature sensor 25 detects the current environmental temperature of environment residing for off-premises station 2, wherein, if when off-premises station 2 starts for the first time within the default work period, controller 21 is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station 2.It should be noted that, the default work period should make broad understanding, can be several years, also can be some months.Such as, when off-premises station 2 is after closing summer, until just open again winter, at this moment if when the winter after some months, first time started, controller 21 is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station 2, instead of the target refrigerant saturation temperature after the adjustment of recording during last shutdown (summer a few months ago).
In addition; as shown in Figure 1B or Fig. 2; off-premises station 2 also comprises outer blower fan Mf, outer expansion valve Ev, outer cross valve SV and outer machine system protection sensor 26, systematic parameter acquisition module 27; systematic parameter acquisition module 27 is connected between each sensor and controller 21, sends to controller 21 after the parameter that the first pressure sensor 23, second pressure sensor 24 and temperature sensor 25, outer machine system protection sensor 26 gather being processed.Wherein, controller 21 comprises compressor output frequency control module 211, blower fan output control module 212, outer expansion valve output control module 213 and outer cross valve output control module 214, and the collection signal that compressor output frequency control module 211, blower fan output control module 212, outer expansion valve output control module 213 and outer cross valve output control module 214 export according to systematic parameter acquisition module 27 respectively realizes frequency-changeable compressor Mc, outer blower fan Mf, outer expansion valve Ev and the corresponding control of outer cross valve SV.
In one embodiment of the invention, the operational factor of frequency-changeable compressor Mc comprises running time and the start-stop time of frequency-changeable compressor Mc in the first preset time period of frequency-changeable compressor.And, the running time of frequency-changeable compressor Mc be more than or equal to very first time threshold value and the start-stop time of frequency-changeable compressor Mc in the first preset time period is more than or equal to the first preset times threshold value time, controller 21 is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, the control procedure of the air-conditioning system of the embodiment of the present invention is described below respectively in detail with two embodiments of heating mode and refrigeration mode.
[embodiment 1]
As shown in Figure 3; in cooling mode; off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, the startup-shutdown that off-premises station 2 carries out refrigeration system according to the mode selection command control signal received and switching on and shutting down command control signal runs.Wherein, controller 21, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.That is, controller, after receiving switching on and shutting down instruction, postpones Preset Time such as S and starts shooting or shut down second.
And, if indoor set is first time startup in the default work period, controller is then according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Te according to the first pressure detecting signal that the first pressure sensor 23 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment; when off-premises station shuts down; controller 21 judges the running time of frequency-changeable compressor; if be less than very first time threshold value such as Y minute the running time of frequency-changeable compressor; then be not counted in the judgement that controller is revised target refrigerant saturation temperature according to machine stop times; to prevent client from selecting to cause off-premises station start and stop to operate because of maloperation, avoid controller to carry out mistake and judge.
If be more than or equal to the very first time threshold value running time of frequency-changeable compressor such as more than Y minute, then normally count the judgement that controller is revised target refrigerant saturation temperature according to machine stop times.And in the first preset time period such as certain hour X minute, controller is more than or equal to the situation of the first preset times threshold value such as more than Z time according to the stopping signal number of times received, judge that the indoor cooling load of air-conditioning system is smaller, controller is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous upwards revise goal refrigerant saturation temperature Tes, such as adjust Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, frequency-changeable compressor is allowed to reduce rotating speed in the running, reduce refrigerating capacity to export, thus slowly reduce indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
[embodiment 2]
As shown in Figure 4; in a heating mode; off-premises station 2 is also configured with the second pressure sensor 24 refrigerant high side pressure value being detected, the startup-shutdown that off-premises station 2 carries out heating according to the mode selection command control signal received and switching on and shutting down command control signal runs.Wherein, controller 21, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.
And, if indoor set be in the default work period first time start, controller then according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Tc according to the second pressure detecting signal that the second pressure sensor 24 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment; when off-premises station shuts down; controller 21 judges the running time of frequency-changeable compressor; if be less than very first time threshold value such as Y minute the running time of frequency-changeable compressor; then be not counted in the judgement that controller is revised target refrigerant saturation temperature according to machine stop times; to prevent client from selecting to cause off-premises station start and stop to operate because of maloperation, avoid controller to carry out mistake and judge.
If be more than or equal to the very first time threshold value running time of frequency-changeable compressor such as more than Y minute, then normally count the judgement that controller is revised target refrigerant saturation temperature according to machine stop times.And in the first preset time period such as certain hour X minute, controller is more than or equal to the situation of the first preset times threshold value such as more than Z time according to the stopping signal number of times received, judge that the indoor heating load of air-conditioning system is smaller, controller is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous downward revision target refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs-1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, frequency-changeable compressor is allowed to reduce rotating speed in the running, reduce heating capacity to export, thus slowly improve indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
According to another embodiment of the invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current.Further, when being more than or equal to the second time threshold the running time of frequency-changeable compressor, controller obtains running frequency before the current operation frequency of frequency-changeable compressor or current running current and the second preset time period or running current respectively; When running frequency before current operation frequency is less than the second preset time period or current running current are less than the running current before the second preset time period, controller keeps target refrigerant saturation temperature constant, and running frequency before current operation frequency is more than or equal to the second preset time period or current running current are when being more than or equal to the running current before the second preset time period, controller is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, the control procedure of the air-conditioning system of the embodiment of the present invention is described below respectively in detail with two embodiments of heating mode and refrigeration mode.
[embodiment 3]
As shown in Figure 5, in cooling mode, off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal refrigerating operaton.
And, if indoor set is first time startup in the default work period, controller is then according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Te according to the first pressure detecting signal that the first pressure sensor 23 generates, then according to target refrigerant saturation temperature Tes, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, thus provide the rate-adaptive pacemaker of frequency-changeable compressor.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment, the second time threshold is more than or equal to after such as certain hour U minute in the running time of frequency-changeable compressor, controller compares to judge whether to need to revise target refrigerant saturation temperature Tes to the running frequency before the current operation frequency of frequency-changeable compressor and the second preset time period such as W minute, or controller compares to judge whether to need to revise target refrigerant saturation temperature Tes to the running current before the current running current of frequency-changeable compressor and the second preset time period such as W minute.
After frequency-changeable compressor runs U minute; and the current operation frequency of frequency-changeable compressor be less than W minute before running frequency or the current running current of frequency-changeable compressor be less than W minute before running current and there is not shutdown action; then controller judges not revise target refrigerant saturation temperature Tes; maintain current PID control overflow running, make indoor temperature progressively reach setting target.Meanwhile, record current goal refrigerant saturation temperature Tes, can as the initial target refrigerant saturation temperature of starting shooting next time.
After frequency-changeable compressor runs U minute, and the running current before the running frequency before the current operation frequency of frequency-changeable compressor is more than or equal to W minute or the current running current of frequency-changeable compressor are more than or equal to W minute and do not occur shutdown action, can think inadequate compared with the ability need of cooling load frequency-changeable compressor, controller is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous downward revision target refrigerant saturation temperature Tes, such as adjust Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, make frequency-changeable compressor improve rotating speed and reduce suction pressure, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
[embodiment 4]
As shown in Figure 6, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal heating operation.
And, if indoor set be in the default work period first time start, controller then according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Tc according to the second pressure detecting signal that the second pressure sensor 24 generates, then according to target refrigerant saturation temperature Tcs, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, thus provide the rate-adaptive pacemaker of frequency-changeable compressor.
In the present embodiment, the second time threshold is more than or equal to after such as certain hour U minute in the running time of frequency-changeable compressor, controller compares to judge whether to need to revise target refrigerant saturation temperature Tcs to the running frequency before the current operation frequency of frequency-changeable compressor and the second preset time period such as W minute, or controller compares to judge whether to need to revise target refrigerant saturation temperature Tcs to the running current before the current running current of frequency-changeable compressor and the second preset time period such as W minute.
After frequency-changeable compressor runs U minute; and the current operation frequency of frequency-changeable compressor be less than W minute before running frequency or the current running current of frequency-changeable compressor be less than W minute before running current and there is not shutdown action; then controller judges not revise target refrigerant saturation temperature Tcs; maintain current PID control overflow running, make indoor temperature progressively reach setting target.Meanwhile, record current goal refrigerant saturation temperature Tcs, can as the initial target refrigerant saturation temperature of starting shooting next time.
After frequency-changeable compressor runs U minute, and the running current before the running frequency before the current operation frequency of frequency-changeable compressor is more than or equal to W minute or the current running current of frequency-changeable compressor are more than or equal to W minute and do not occur shutdown action, can think inadequate compared with the ability need of heating load frequency-changeable compressor, controller is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, make frequency-changeable compressor improve rotating speed and improve high-pressure side discharge pressure, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises running time and the start-stop time of frequency-changeable compressor in the 3rd preset time period of frequency-changeable compressor, wherein be more than or equal to the 3rd time threshold in the running time of frequency-changeable compressor, the start-stop time of frequency-changeable compressor in the 3rd preset time period is more than or equal to the second preset times threshold value, and target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, controller is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, the control procedure of the air-conditioning system of the embodiment of the present invention is described below respectively in detail with two embodiments of heating mode and refrigeration mode.
[embodiment 5]
As shown in Figure 7, in cooling mode, off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal refrigerating operaton.
And, if indoor set is first time startup in the default work period, controller is then according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Te according to the first pressure detecting signal that the first pressure sensor 23 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment, the 3rd time threshold is more than or equal to after such as certain hour A minute in the running time of frequency-changeable compressor, controller judges whether to need to revise target refrigerant saturation temperature Tes according to the machine stop times received and indoor ability need, namely say, controller judges whether the start-stop time of the frequency-changeable compressor received in such as B minute in the 3rd preset time period is more than or equal to the second preset times such as D time, and whether target refrigerant saturation temperature Tes is more than or equal to default saturation temperature threshold value C, judge whether to need to revise target refrigerant saturation temperature Tes.
If be more than or equal to the 3rd time threshold the running time of frequency-changeable compressor such as more than A minute, the machine stop times normally counted was more than or equal to D time in B minute, and target refrigerant saturation temperature Tes is more than or equal to C, judge that the indoor cooling load of air-conditioning system is smaller, controller is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous upwards revise goal refrigerant saturation temperature Tes, such as adjust Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, frequency-changeable compressor is allowed to reduce rotating speed in the running, reduce refrigerating capacity to export, thus slowly reduce indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
[embodiment 6]
As shown in Figure 8, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal heating operation.
And, if indoor set be in the default work period first time start, controller then according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.
Then controller generates current refrigerant saturation temperature Tc according to the second pressure detecting signal that the second pressure sensor 24 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, the 3rd time threshold is more than or equal to after such as certain hour A minute in the running time of frequency-changeable compressor, controller judges whether to need to revise target refrigerant saturation temperature Tcs according to the machine stop times received and indoor ability need, namely say, controller judges whether the start-stop time of the frequency-changeable compressor received in such as B minute in the 3rd preset time period is more than or equal to the second preset times such as D time, and whether target refrigerant saturation temperature Tcs is more than or equal to default saturation temperature threshold value C, judge whether to need to revise target refrigerant saturation temperature Tcs.
If be more than or equal to the 3rd time threshold the running time of frequency-changeable compressor such as more than A minute, the machine stop times normally counted was more than or equal to D time in B minute, and target refrigerant saturation temperature Tcs is more than or equal to C, judge that the indoor heating load of air-conditioning system is smaller, controller is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous downward revision target refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs-1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, frequency-changeable compressor is allowed to reduce rotating speed in the running, reduce heating capacity to export, thus slowly improve indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current, wherein be more than or equal to the 4th time threshold in the running time of frequency-changeable compressor, and the current running current that the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, controller is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, the control procedure of the air-conditioning system of the embodiment of the present invention is described below respectively in detail with two embodiments of heating mode and refrigeration mode.
[embodiment 7]
As shown in Figure 9, in cooling mode, off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal refrigerating operaton.
And, if indoor set is first time startup in the default work period, controller is then according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Te according to the first pressure detecting signal that the first pressure sensor 23 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment, after being more than or equal to the 4th time threshold such as certain hour E minute (30 minutes) running time of frequency-changeable compressor, controller compares to judge whether to need to revise target refrigerant saturation temperature Tes to the current operation frequency of frequency-changeable compressor and predeterminated frequency threshold value such as F hertz, or controller compares to judge whether to need to revise target refrigerant saturation temperature Tes to the current running current of frequency-changeable compressor and predetermined current threshold.
After frequency-changeable compressor runs E minute, and the current running current that the current operation frequency of frequency-changeable compressor is more than or equal to F hertz or frequency-changeable compressor is more than or equal to predetermined current threshold, can judge that the indoor cooling load of air-conditioning system is larger, controller is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous downward revision target refrigerant saturation temperature Tes, such as adjust Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, make frequency-changeable compressor improve rotating speed and reduce suction pressure, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
[embodiment 8]
As shown in Figure 10, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, off-premises station 2 is according to the mode selection command control signal received and switching on and shutting down command control signal heating operation.
And, if indoor set be in the default work period first time start, controller then according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Tc according to the second pressure detecting signal that the second pressure sensor 24 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, after being more than or equal to the 4th time threshold such as certain hour E minute (30 minutes) running time of frequency-changeable compressor, controller compares to judge whether to need to revise target refrigerant saturation temperature Tcs to the current operation frequency of frequency-changeable compressor and predeterminated frequency threshold value such as F hertz, or controller compares to judge whether to need to revise target refrigerant saturation temperature Tcs to the current running current of frequency-changeable compressor and predetermined current threshold.
After frequency-changeable compressor runs E minute, and the current running current that the current operation frequency of frequency-changeable compressor is more than or equal to F hertz or frequency-changeable compressor is more than or equal to predetermined current threshold, can judge that the indoor heating load of air-conditioning system is larger, controller is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, frequency-changeable compressor is made to improve rotating speed, improve high pressure discharge pressure as early as possible, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor, wherein when the running time of frequency-changeable compressor is more than or equal to the 5th time threshold and frequency-changeable compressor did not stop machine, controller is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, the control procedure of the air-conditioning system of the embodiment of the present invention is described below respectively in detail with two embodiments of heating mode and refrigeration mode.
[embodiment 9]
As shown in figure 11; in cooling mode; off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, the startup-shutdown that off-premises station 2 carries out refrigeration system according to the mode selection command control signal received and switching on and shutting down command control signal runs.Wherein, controller 21, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.That is, controller, after receiving switching on and shutting down instruction, postpones Preset Time such as S and starts shooting or shut down second.
And, if indoor set is first time startup in the default work period, controller is then according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Te according to the first pressure detecting signal that the first pressure sensor 23 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment, after being more than or equal to the 5th time threshold the running time of frequency-changeable compressor, controller judges whether frequency-changeable compressor stopped machine to judge whether to need to revise target refrigerant saturation temperature Tes.
After frequency-changeable compressor runs the 5th time threshold, and frequency-changeable compressor did not stop machine, can judge that the indoor cooling load of air-conditioning system is larger, controller is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous downward revision target refrigerant saturation temperature Tes, such as adjust Tes=Tes-1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, make frequency-changeable compressor improve rotating speed and reduce suction pressure, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
[embodiment 10]
As shown in figure 12; in a heating mode; off-premises station 2 is also configured with the second pressure sensor 24 refrigerant high side pressure value being detected, the startup-shutdown that off-premises station 2 carries out heating according to the mode selection command control signal received and switching on and shutting down command control signal runs.Wherein, controller 21, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.
And, if indoor set be in the default work period first time start, controller then according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when controller is then shut down according to the last time.
Then controller generates current refrigerant saturation temperature Tc according to the second pressure detecting signal that the second pressure sensor 24 generates, and then constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, after being more than or equal to the 5th time threshold the running time of frequency-changeable compressor, controller judges whether frequency-changeable compressor stopped machine to judge whether to need to revise target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs the 5th time threshold, and frequency-changeable compressor did not stop machine, can judge that the indoor heating load of air-conditioning system is larger, controller is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, frequency-changeable compressor is made to improve rotating speed, improve high pressure discharge pressure as early as possible, indoor temperature is made to reach setting target.Meanwhile, record current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In an embodiment of the present invention, air-conditioning system can be one-to-one system, also can be drag multisystem, and this air-conditioning system can be single cooler, also can be air conditioner.Wherein indoor set not by parameter communications such as indoor environment temperatures to off-premises station, and be only the start-stop that the startup-shutdown instruction of sending according to line control machine, remote controller or indoor set controls off-premises station.The air-conditioning system of the embodiment of the present invention can control frequency-changeable compressor under indoor set and off-premises station do not carry out the refrigeration of controling parameters communication and/or heating mode, the controller of off-premises station can complete the electric component controlling rapidly the off-premises stations such as frequency-changeable compressor by autonomous learning, thus indoor temperature is arrived and maintains design temperature.
According to embodiments of the invention, controller 21, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.That is, controller, after receiving switching on and shutting down instruction, postpones Preset Time such as S and starts shooting or shut down second.
According to the air-conditioning system of the embodiment of the present invention, the controller of the off-premises station in air-conditioning system carries out VFC independent of indoor set to frequency-changeable compressor according to the operational factor of frequency-changeable compressor, specific communication is carried out to transmit corresponding controling parameters without the need to indoor set and off-premises station, make the structure of air-conditioning system become more simple, greatly reduce cost.
The air conditioner system control method that embodiment according to a second aspect of the present invention proposes is described with reference to the accompanying drawings.
Figure 13 is the flow chart of the air conditioner system control method according to the embodiment of the present invention.As shown in figure 13, this air conditioner system control method comprises the following steps:
S1, obtains the operational factor of the frequency-changeable compressor of the off-premises station of air-conditioning system.
S2, utilizes the controller of off-premises station to carry out VFC independent of the indoor set of air-conditioning system to the frequency-changeable compressor of off-premises station according to the operational factor of frequency-changeable compressor.
That is, after startup air-conditioning system, first pressure sensor and/or second pressure sensor of off-premises station detect frequency-changeable compressor air inlet pressure force value and/or exhaust pressure value respectively, and temperature sensor detects the environment temperature around off-premises station, and send the frequency-changeable compressor air inlet pressure force value detected and/or exhaust pressure value and off-premises station environment temperature to systematic parameter acquisition module, the frequency-changeable compressor air inlet pressure force value that controller collects according to systematic parameter acquisition module and/or exhaust pressure value and off-premises station environment temperature carry out internal arithmetic process to generate control signal, VFC is carried out to frequency-changeable compressor, and external blower fan, outer expansion valve, outer cross valve carries out corresponding control.
In one embodiment of the invention, above-mentioned air conditioner system control method also comprises: when mode of operation is refrigeration mode, and controller obtains the first pressure detecting signal by the first pressure sensor being arranged on frequency-changeable compressor porch.
Wherein, when air-conditioning system is single cooler, the first pressure sensor only need be set at the muffler place of frequency-changeable compressor to detect frequency-changeable compressor return-air low-pressure lateral pressure when air-conditioning system is freezed.
In another embodiment of the present invention, above-mentioned air conditioner system control method also comprises: when mode of operation is heating mode, and controller obtains the second pressure detecting signal by the second pressure sensor being arranged on frequency-changeable compressor exit.That is, when air-conditioning system is air conditioner, the second pressure sensor also need be set at the blast pipe place of frequency-changeable compressor to detect frequency-changeable compressor exhaust high side pressure when air-conditioning system heats.Certainly, also can assemble a pressure sensor after cross valve, be low-pressure lateral pressure during refrigeration, basic suitable with back pressure.High side pressure when heating, basic suitable with pressure at expulsion.
In one embodiment of the invention, controller carries out VFC according to the operational factor of frequency-changeable compressor to frequency-changeable compressor and comprises further:
S11, controller selects the first pressure detecting signal or the second pressure detecting signal to generate current refrigerant saturation temperature according to mode of operation.
S12, controller obtains target refrigerant saturation temperature.
S13, controller carries out VFC according to current refrigerant saturation temperature, target refrigerant saturation temperature to frequency-changeable compressor, wherein, in the VFC process of frequency-changeable compressor, controller adjusts target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor.
Further, in one embodiment of the invention, when shutting down, controller is using initial target refrigerant saturation temperature during next as off-premises station for the target refrigerant saturation temperature after adjustment start.
Wherein, if when off-premises station starts for the first time within the default work period, controller is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station.It should be noted that, the default work period should make broad understanding, can be several years, also can be some months.Such as, when off-premises station is after closing summer, until just open again winter, at this moment if when the winter after some months, first time started, controller is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station, instead of the target refrigerant saturation temperature after the adjustment of recording during last shutdown (summer a few months ago).
Further, in one embodiment of the invention, the operational factor of frequency-changeable compressor comprises running time and the start-stop time of frequency-changeable compressor in the first preset time period of frequency-changeable compressor, and controller to adjust target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor and comprises further: controller judges whether the running time of frequency-changeable compressor is more than or equal to very first time threshold value; If judge to be more than or equal to the described very first time threshold value running time of frequency-changeable compressor, then controller obtains the start-stop time of frequency-changeable compressor in the first preset time period; And if the start-stop time of frequency-changeable compressor in the first preset time period is more than or equal to the first preset times threshold value, then controller adjusts described target refrigerant saturation temperature according to default step-length.
Wherein, concrete control procedure, as described in above-described embodiment 1 and embodiment 2, just repeats no more here.
In another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current, and controller to adjust target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor and comprises further: controller judges whether the running time of frequency-changeable compressor is more than or equal to the second time threshold; If judge that the running time of frequency-changeable compressor is more than or equal to the second time threshold, then controller obtains running frequency before the current operation frequency of frequency-changeable compressor or current running current and the second preset time period or running current respectively; If current operation frequency is less than running frequency before the second preset time period or described current running current and is less than running current before described second preset time period, then controller keeps target refrigerant saturation temperature constant; If current operation frequency is more than or equal to running frequency before the second preset time period or described current running current and is more than or equal to running current before described second preset time period, then controller is according to default step-length adjustment aim refrigerant saturation temperature.
Wherein, concrete control procedure, as described in above-described embodiment 3 and embodiment 4, just repeats no more here.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises running time and the start-stop time of frequency-changeable compressor in the 3rd preset time period of frequency-changeable compressor, and controller to adjust target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor and comprises further: controller judges whether the running time of frequency-changeable compressor is more than or equal to the 3rd time threshold; If judge to be more than or equal to the 3rd time threshold the running time of frequency-changeable compressor, then controller obtains the start-stop time of frequency-changeable compressor in the 3rd preset time period; And if the start-stop time of frequency-changeable compressor in the 3rd preset time period is more than or equal to the second preset times threshold value, then controller judges whether target refrigerant saturation temperature is more than or equal to default saturation temperature threshold value further; If target refrigerant saturation temperature is more than or equal to default saturation temperature threshold value, then controller is according to default step-length adjustment aim refrigerant saturation temperature.
Wherein, concrete control procedure, as described in above-described embodiment 5 and embodiment 6, just repeats no more here.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current, and controller to adjust target refrigerant saturation temperature according to the operational factor of frequency-changeable compressor and comprises further: controller judges whether the running time of frequency-changeable compressor is more than or equal to the 4th time threshold; If judge to be more than or equal to the 4th time threshold the running time of frequency-changeable compressor, then controller obtains the current operation frequency of frequency-changeable compressor or current running current; Judge whether the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value, or whether the current running current of described frequency-changeable compressor is more than or equal to predetermined current threshold; If the current running current that the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is more than or equal to described predetermined current threshold, then controller is according to default step-length adjustment aim refrigerant saturation temperature.
Wherein, concrete control procedure, as described in above-described embodiment 7 and embodiment 8, just repeats no more here.
In another embodiment of the present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further: described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 5th time threshold; If judge to be more than or equal to described 5th time threshold the running time of described frequency-changeable compressor and described frequency-changeable compressor did not stop machine, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
Wherein, concrete control procedure, as described in above-described embodiment 9 and embodiment 10, just repeats no more here.
According to one embodiment of present invention, controller, when receiving machine open/close signal, carries out time delay certain hour such as S and processes second, to prevent client from selecting to cause off-premises station to start running because of maloperation, avoids the controller of off-premises station to carry out false judgment.That is, after the switching on and shutting down instruction receiving off-premises station, controller controls off-premises station delay Preset Time such as S and starts shooting or shut down second.
According to the air conditioner system control method of the embodiment of the present invention, the controller of off-premises station carries out VFC independent of indoor set to frequency-changeable compressor according to the operational factor of frequency-changeable compressor, specific communication is carried out to transmit corresponding controling parameters without the need to indoor set and off-premises station, decrease controling parameters transmitting procedure, reduce the complexity of air-conditioning system, improve air-conditioning system operational reliability.
The off-premises station of the air-conditioning system that embodiment according to a third aspect of the present invention proposes is described with reference to the accompanying drawings.
Figure 14 is the block diagram of the off-premises station of air-conditioning system according to the embodiment of the present invention.As shown in figure 14, the off-premises station 2 of this air-conditioning system comprises frequency-changeable compressor Mc and controller 21.
Wherein, controller 21 is for controlling frequency-changeable compressor, and controller 21 comprises: start module 201, target refrigerant saturation temperature control module 202 and VFC module 203 (compressor output frequency control module 211).
Start module 201 for obtaining the mode of operation of air-conditioning system, and the frequency-changeable compressor Mc of the off-premises station of air-conditioning system is started according to the mode of operation of air-conditioning system, target refrigerant saturation temperature control module 202 is for obtaining initial target refrigerant saturation temperature, and in the VFC process of frequency-changeable compressor Mc, operational factor according to frequency-changeable compressor Mc adjusts target refrigerant saturation temperature, and VFC module 203 (compressor output frequency control module 211) is for carrying out VFC according to target refrigerant saturation temperature to frequency-changeable compressor Mc.
In one embodiment of the invention, target refrigerant saturation temperature when target refrigerant saturation temperature control module 202 is also for starting shooting the target refrigerant saturation temperature after adjustment as off-premises station 2 is next when shutting down.
As shown in Figure 1B, off-premises station 2 also comprises: the first pressure sensor 23, first pressure sensor 23 being arranged on frequency-changeable compressor porch generates the first pressure detecting signal when mode of operation is refrigeration mode.Wherein, when air-conditioning system is single cooler, the first pressure sensor 23 only need be set at the muffler place of frequency-changeable compressor Mc to detect frequency-changeable compressor Mc return-air low-pressure lateral pressure when air-conditioning system is freezed.
According to one embodiment of present invention, as shown in Figure 2, off-premises station 2 also comprises: the second pressure sensor 24, second pressure sensor 24 being arranged on frequency-changeable compressor exit generates the second pressure detecting signal when mode of operation is heating mode.That is, when air-conditioning system is air conditioner, the second pressure sensor 24 also need be set at the blast pipe place of frequency-changeable compressor Mc and be vented high side pressure to detect frequency-changeable compressor Mc when air-conditioning system heats.Certainly, also can assemble a pressure sensor after cross valve, be low-pressure lateral pressure during refrigeration, basic suitable with back pressure.High side pressure when heating, basic suitable with pressure at expulsion.
Wherein, target refrigerant saturation temperature control module 202 selects one of the first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to mode of operation, and obtaining target refrigerant saturation temperature, VFC module 203 carries out VFC according to current refrigerant saturation temperature, target refrigerant saturation temperature to frequency-changeable compressor Mc.
As shown in Figure 1B or Fig. 2, off-premises station 2 also comprises: temperature sensor 25, temperature sensor 25 detects the current environmental temperature of environment residing for off-premises station 2, wherein, if when off-premises station 2 starts for the first time within the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station 2.It should be noted that, the default work period should make broad understanding, can be several years, also can be some months.Such as, when off-premises station 2 is after closing summer, until just open again winter, at this moment if when the winter after some months, first time started, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature of off-premises station 2, instead of the target refrigerant saturation temperature after the adjustment of recording during last shutdown (summer a few months ago).
In one embodiment of the invention, the operational factor of frequency-changeable compressor comprises running time and the start-stop time of frequency-changeable compressor in the first preset time period of frequency-changeable compressor.And, the running time of frequency-changeable compressor be more than or equal to very first time threshold value and the start-stop time of frequency-changeable compressor in the first preset time period is more than or equal to the first preset times threshold value time, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically; as shown in Figure 3; in cooling mode, off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, starts module 201 carries out refrigeration system startup-shutdown operation according to the mode selection command control signal received and switching on and shutting down command control signal.Wherein, starting module 201 when receiving machine open/close signal, carrying out time delay certain hour such as S and processing second, to prevent client from selecting to cause off-premises station 2 to start running because of maloperation, avoid the controller of off-premises station to carry out false judgment.
And, if indoor set is first time startup in the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when target refrigerant saturation temperature control module 202 was shut down according to the last time.
Then the first pressure detecting signal that target refrigerant saturation temperature control module 202 generates according to the first pressure sensor 23 generates current refrigerant saturation temperature Te, and then VFC module 203 constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment; when off-premises station shuts down; target refrigerant saturation temperature control module 202 judges the running time of frequency-changeable compressor; if be less than very first time threshold value such as Y minute the running time of frequency-changeable compressor; then be not counted in the judgement that target refrigerant saturation temperature control module 202 is revised target refrigerant saturation temperature according to machine stop times; to prevent client from selecting to cause off-premises station start and stop to operate because of maloperation, avoid controller to carry out mistake and judge.
If be more than or equal to the very first time threshold value running time of frequency-changeable compressor such as more than Y minute, then normally count the judgement that target refrigerant saturation temperature control module 202 is revised target refrigerant saturation temperature according to machine stop times.And in the first preset time period such as certain hour X minute, target refrigerant saturation temperature control module 202 is more than or equal to the situation of the first preset times threshold value such as more than Z time according to the stopping signal number of times received, judge that the indoor cooling load of air-conditioning system is smaller, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous upwards revise goal refrigerant saturation temperature Tes, such as adjust Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, VFC module 203 allows frequency-changeable compressor reduce rotating speed in the running, reduce refrigerating capacity to export, thus slowly reduce indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the off-premises station of the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In example 2, as shown in Figure 4, in a heating mode, similar to the adjustment process of target refrigerant saturation temperature in cooling mode in the adjustment process of target refrigerant saturation temperature control module 202 pairs of target refrigerant saturation temperatures and embodiment 1, just repeat no longer one by one here.
In another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current.And, when being more than or equal to the second time threshold the running time of frequency-changeable compressor, target refrigerant saturation temperature control module 202 obtains running frequency before the current operation frequency of frequency-changeable compressor or current running current and the second preset time period or running current respectively, when running frequency before current operation frequency is less than the second preset time period or described current running current are less than the running current before described second preset time period, target refrigerant saturation temperature control module 202 keeps target refrigerant saturation temperature constant, and running frequency before current operation frequency is more than or equal to the second preset time period or described current running current are when being more than or equal to the running current before described second preset time period, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, as shown in Figure 6, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, starts module 201 controls off-premises station frequency-changeable compressor heating operation according to the mode selection command control signal received and switching on and shutting down command control signal.
And, if indoor set is first time startup in the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when target refrigerant saturation temperature control module 202 was shut down according to the last time.
Then the second pressure detecting signal that target refrigerant saturation temperature control module 202 generates according to the second pressure sensor 24 generates current refrigerant saturation temperature Tc, then VFC module 203 constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc, thus provides the rate-adaptive pacemaker of frequency-changeable compressor.
In the present embodiment, the second time threshold is more than or equal to after such as certain hour U minute in the running time of frequency-changeable compressor, running frequency before the current operation frequency of target refrigerant saturation temperature control module 202 pairs of frequency-changeable compressors and the second preset time period such as W minute compares to judge whether to need to revise target refrigerant saturation temperature Tcs, or the running current before the current running current of target refrigerant saturation temperature control module 202 pairs of frequency-changeable compressors and the second preset time period such as W minute compares to judge whether to need to revise target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs U minute; and the current operation frequency of frequency-changeable compressor be less than W minute before running frequency or the current running current of frequency-changeable compressor be less than W minute before running current and there is not shutdown action; then target refrigerant saturation temperature control module 202 judges not revise target refrigerant saturation temperature Tcs; VFC module 203 maintains current PID control overflow running, makes indoor temperature progressively reach setting target.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature Tcs, can as the initial target refrigerant saturation temperature of starting shooting next time.
After frequency-changeable compressor runs U minute, and the running current before the running frequency before the current operation frequency of frequency-changeable compressor is more than or equal to W minute or the current running current of frequency-changeable compressor are more than or equal to W minute and do not occur shutdown action, can think inadequate compared with the ability need of heating load frequency-changeable compressor, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, VFC module 203 makes frequency-changeable compressor improve rotating speed, improve high-pressure side discharge pressure, indoor temperature is made to reach setting target.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the off-premises station of the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In embodiment 3, as shown in Figure 5, in cooling mode, similar to the adjustment process of target refrigerant saturation temperature in a heating mode in the adjustment process of target refrigerant saturation temperature control module 202 pairs of target refrigerant saturation temperatures and embodiment 4, just repeat no longer one by one here.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises running time and the start-stop time of frequency-changeable compressor in the 3rd preset time period of frequency-changeable compressor, wherein be more than or equal to the 3rd time threshold in the running time of frequency-changeable compressor, the start-stop time of frequency-changeable compressor in the 3rd preset time period is more than or equal to the second preset times threshold value, and target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, as shown in Figure 7, in cooling mode, off-premises station 2 is configured with the first pressure sensor 23 refrigerant low-pressure lateral pressure value being detected, starts module 201 and control frequency-changeable compressor refrigerating operaton according to the mode selection command control signal received and switching on and shutting down command control signal.
And, if indoor set is first time startup in the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature Tes of off-premises station, such as, outdoor environment temperature is between 30-35 DEG C, and the initial target refrigerant saturation temperature determined is 6 DEG C, outdoor environment temperature is between 35-40 DEG C, the initial target refrigerant saturation temperature determined is 3 DEG C, and outdoor environment temperature is between 25-30 DEG C, and the initial target refrigerant saturation temperature determined is 8 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when target refrigerant saturation temperature control module 202 was shut down according to the last time.
Then the first pressure detecting signal that target refrigerant saturation temperature control module 202 generates according to the first pressure sensor 23 generates current refrigerant saturation temperature Te, and then VFC module 203 constantly carries out PID adjustment according to target refrigerant saturation temperature Tes to current refrigerant saturation temperature Te.Wherein, PID is controlled to be described as follows:
Deviate △ e=Te-Tes (the such as current Te=10 of current refrigerant saturation temperature Te and target refrigerant saturation temperature Tes, target Tes=6, so current △ e0=10-6=4), because chip image data is discrete, PID calculating is carried out, to draw the changing value of frequency-changeable compressor running frequency according to the difference of (such as before 40s) the △ e1 before certain hour and current △ e0 or the weighted value determination feedback quantity of △ e1 and △ e0.Wherein, compressor rotary speed=current rotating speed+compressor rotary speed variable quantity, and compressor rotary speed variable quantity=(Kp+Ki/s+Kd*s) * E (△ e1, △ e0), wherein Kp, Ki, s, Kd is pre-set constant, and △ e1, △ e0 is the feedback variable of monitoring in real time.
In the present embodiment, the 3rd time threshold is more than or equal to after such as certain hour A minute in the running time of frequency-changeable compressor, target refrigerant saturation temperature control module 202 judges whether to need to revise target refrigerant saturation temperature Tes according to the machine stop times received and indoor ability need, namely say, target refrigerant saturation temperature control module 202 judges whether the start-stop time of the frequency-changeable compressor received in such as B minute in the 3rd preset time period is more than or equal to the second preset times such as D time, and whether target refrigerant saturation temperature Tes is more than or equal to default saturation temperature threshold value C, judge whether to need to revise target refrigerant saturation temperature Tes.
If be more than or equal to the 3rd time threshold the running time of frequency-changeable compressor such as more than A minute, the machine stop times normally counted was more than or equal to D time in B minute, and target refrigerant saturation temperature Tes is more than or equal to C, judge that the indoor cooling load of air-conditioning system is smaller, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature Tes, i.e. continuous upwards revise goal refrigerant saturation temperature Tes, such as adjust Tes=Tes+1, more fresh target refrigerant saturation temperature Tes, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tes upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Te, VFC module 203 allows frequency-changeable compressor reduce rotating speed in the running, reduce refrigerating capacity to export, thus slowly reduce indoor temperature, reduce the state of off-premises station frequent shutdown.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the off-premises station of the air-conditioning system of the embodiment of the present invention can affect refrigeration system operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In embodiment 6, as shown in Figure 8, in a heating mode, similar to the adjustment process of target refrigerant saturation temperature in cooling mode in the adjustment process of target refrigerant saturation temperature control module 202 pairs of target refrigerant saturation temperatures and embodiment 5, just repeat no longer one by one here.
In yet another embodiment of the present invention, the operational factor of frequency-changeable compressor comprises the running time of frequency-changeable compressor and the running frequency of frequency-changeable compressor or running current, wherein be more than or equal to the 4th time threshold in the running time of frequency-changeable compressor, and the current running current that the current operation frequency of frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature.
Specifically, as shown in Figure 10, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, starts module 201 and control frequency-changeable compressor heating operation according to the mode selection command control signal received and switching on and shutting down command control signal.
And, if indoor set is first time startup in the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when target refrigerant saturation temperature control module 202 was shut down according to the last time.
Then the second pressure detecting signal that target refrigerant saturation temperature control module 202 generates according to the second pressure sensor 24 generates current refrigerant saturation temperature Tc, and then VFC module 203 constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, after being more than or equal to the 4th time threshold such as certain hour E minute (30 minutes) running time of frequency-changeable compressor, the current operation frequency of target refrigerant saturation temperature control module 202 pairs of frequency-changeable compressors and predeterminated frequency threshold value such as F hertz compare to judge whether to need to revise target refrigerant saturation temperature Tcs, or the current running current of target refrigerant saturation temperature control module 202 pairs of frequency-changeable compressors and predetermined current threshold compare to judge whether to need to revise target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs E minute, and the current flow that the current operation frequency of frequency-changeable compressor is more than or equal to F hertz or frequency-changeable compressor is more than or equal to predetermined current threshold, can judge that the indoor heating load of air-conditioning system is larger, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, VFC module 203 makes frequency-changeable compressor improve rotating speed, improve high pressure discharge pressure as early as possible, indoor temperature is made to reach setting target.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the off-premises station of the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In embodiment 7, as shown in Figure 9, in cooling mode, similar to the adjustment process of target refrigerant saturation temperature in a heating mode in the adjustment process of target refrigerant saturation temperature control module 202 pairs of target refrigerant saturation temperatures and embodiment 8, just repeat no longer one by one here.
In another embodiment of the present invention, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, wherein be more than or equal to the 5th time threshold in the running time of described frequency-changeable compressor, and described frequency-changeable compressor was not when stopping machine, described target refrigerant saturation temperature control module adjusted described target refrigerant saturation temperature according to default step-length.
Specifically, as shown in figure 12, in a heating mode, off-premises station 2 is configured with the second pressure sensor 24 refrigerant high side pressure value being detected, starts module 201 and control frequency-changeable compressor heating operation according to the mode selection command control signal received and switching on and shutting down command control signal.
And, if indoor set is first time startup in the default work period, target refrigerant saturation temperature control module 202 is according to the current environmental temperature determination target refrigerant saturation temperature Tcs of off-premises station, such as, outdoor environment temperature is between 7-10 DEG C, and the initial target refrigerant saturation temperature determined is 46 DEG C.If indoor set is not first time startup in the default work period, the initial target refrigerant saturation temperature when target refrigerant saturation temperature of record is started shooting as this when target refrigerant saturation temperature control module 202 was shut down according to the last time.
Then the second pressure detecting signal that target refrigerant saturation temperature control module 202 generates according to the second pressure sensor 24 generates current refrigerant saturation temperature Tc, and then VFC module 203 constantly carries out PID adjustment according to target refrigerant saturation temperature Tcs to current refrigerant saturation temperature Tc.
In the present embodiment, after being more than or equal to the 5th time threshold the running time of frequency-changeable compressor, target refrigerant saturation temperature control module 202 is by judging whether frequency-changeable compressor stopped machine to judge whether to need to revise target refrigerant saturation temperature Tcs.
After frequency-changeable compressor runs the 5th time threshold, and frequency-changeable compressor did not stop machine, can judge that the indoor heating load of air-conditioning system is larger, target refrigerant saturation temperature control module 202 is according to default step-length adjustment aim refrigerant saturation temperature Tcs, i.e. continuous upwards revise goal refrigerant saturation temperature Tcs, such as adjust Tcs=Tcs+1, more fresh target refrigerant saturation temperature Tcs, the running time of described frequency-changeable compressor is returned 0 simultaneously, restart timing, with the target refrigerant saturation temperature Tcs upgraded, constantly PID adjustment is carried out to current refrigerant saturation temperature Tc, VFC module 203 makes frequency-changeable compressor improve rotating speed, improve high pressure discharge pressure as early as possible, indoor temperature is made to reach setting target.Meanwhile, target refrigerant saturation temperature control module 202 records current goal refrigerant saturation temperature, can as the initial target refrigerant saturation temperature of starting shooting next time.
Therefore, the situation that the off-premises station of the air-conditioning system of the embodiment of the present invention can affect heating operational factor according to system chambers internal loading situation carries out identifying and judging, thus adjust the running frequency of frequency-changeable compressor intelligently, the ability of air-conditioning system is played in time, reaches design temperature requirement.
In embodiment 9, as shown in figure 11, in cooling mode, similar to the adjustment process of target refrigerant saturation temperature in a heating mode in the adjustment process of target refrigerant saturation temperature control module 202 pairs of target refrigerant saturation temperatures and embodiment 10, just repeat no longer one by one here.
According to the off-premises station of the air-conditioning system of the embodiment of the present invention, obtaining controling parameters without the need to carrying out particular communication with indoor set, making the structure of air-conditioning system become more simple, greatly reducing cost.
In addition, fourth aspect present invention embodiment also proposed a kind of air-conditioning system, and it comprises the off-premises station of the air-conditioning system that fourth aspect present invention embodiment proposes.
According to the air-conditioning system of the embodiment of the present invention, the controller of off-premises station carries out VFC according to the operational factor of frequency-changeable compressor to frequency-changeable compressor, carry out particular communication without the need to indoor set or without the need to off-premises station and indoor set and obtain controling parameters, make the structure of air-conditioning system become more simple, greatly reduce cost.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only storage (ROM), erasablely edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.

Claims (41)

1. an air-conditioning system, is characterized in that, comprising:
Indoor set; And
Off-premises station, described off-premises station comprises:
Frequency-changeable compressor; With
Controller, described controller is according to the operational factor of described frequency-changeable compressor and carry out VFC independent of described indoor set to described frequency-changeable compressor.
2. air-conditioning system as claimed in claim 1, it is characterized in that, described off-premises station also comprises:
Communicator, described communicator is for receiving remote controller, line control machine and directly send or switching on and shutting down instruction that described indoor set sends and mode selection command, wherein, described controller carries out VFC according to the operational factor of described frequency-changeable compressor and mode of operation corresponding to described mode selection command to described frequency-changeable compressor.
3. air-conditioning system as claimed in claim 2, it is characterized in that, described off-premises station also comprises:
Be arranged on the first pressure sensor of described frequency-changeable compressor porch, described first pressure sensor generates the first pressure detecting signal when described mode of operation is refrigeration mode.
4. air-conditioning system as claimed in claim 3, it is characterized in that, described off-premises station also comprises:
Be arranged on second pressure sensor in described frequency-changeable compressor exit, described second pressure sensor generates the second pressure detecting signal when described mode of operation is heating mode.
5. air-conditioning system as claimed in claim 4, it is characterized in that, described controller selects one of described first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation, and obtain target refrigerant saturation temperature, and according to described current refrigerant saturation temperature, described target refrigerant saturation temperature, VFC is carried out to described frequency-changeable compressor
Wherein, in the VFC process of described frequency-changeable compressor, described controller adjusts described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor.
6. air-conditioning system as claimed in claim 5, it is characterized in that, described off-premises station also comprises:
Temperature sensor, described temperature sensor detects the current environmental temperature of environment residing for described off-premises station, wherein, if when described off-premises station starts for the first time within the default work period, described controller determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
7. air-conditioning system as claimed in claim 5, is characterized in that, described controller when shutting down, using the described target refrigerant saturation temperature after adjustment as initial target refrigerant saturation temperature during described off-premises station start next time.
8. air-conditioning system as claimed in claim 5, it is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor.
9. air-conditioning system as claimed in claim 8, it is characterized in that, the running time of described frequency-changeable compressor be more than or equal to very first time threshold value and the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value time, described controller adjusts described target refrigerant saturation temperature according to default step-length.
10. air-conditioning system as claimed in claim 5, is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current.
11. air-conditioning systems as claimed in claim 10, it is characterized in that, when being more than or equal to the second time threshold the running time of described frequency-changeable compressor, described controller obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively;
When running frequency before described current operation frequency is less than described second preset time period or described current running current are less than the running current before described second preset time period, described controller keeps described target refrigerant saturation temperature constant, and running frequency before described current operation frequency is more than or equal to described second preset time period or described current running current are when being more than or equal to the running current before described second preset time period, described controller adjusts described target refrigerant saturation temperature according to default step-length.
12. air-conditioning systems as claimed in claim 5, is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor,
Wherein be more than or equal to the 3rd time threshold in the running time of described frequency-changeable compressor, the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, and described target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, described controller adjusts described target refrigerant saturation temperature according to default step-length.
13. air-conditioning systems as claimed in claim 5, is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current,
Wherein be more than or equal to the 4th time threshold in the running time of described frequency-changeable compressor, and the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, described controller adjusts described target refrigerant saturation temperature according to default step-length.
14. air-conditioning systems as claimed in claim 5, it is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, wherein when the running time of described frequency-changeable compressor is more than or equal to the 5th time threshold and described frequency-changeable compressor did not stop machine, described controller adjusts described target refrigerant saturation temperature according to default step-length.
15. air-conditioning systems as claimed in claim 2, is characterized in that, described controller, after receiving described switching on and shutting down instruction, postpones Preset Time start or shutdown.
16. 1 kinds of air conditioner system control method, is characterized in that, comprise the following steps:
Obtain the operational factor of the frequency-changeable compressor of the off-premises station of described air-conditioning system; With
The controller of described off-premises station is utilized to carry out VFC independent of the indoor set of described air-conditioning system to the frequency-changeable compressor of described off-premises station according to the operational factor of described frequency-changeable compressor.
17. air conditioner system control method as claimed in claim 16, is characterized in that, also comprise:
When described mode of operation is refrigeration mode, described controller obtains the first pressure detecting signal by the first pressure sensor being arranged on described frequency-changeable compressor porch.
18. air conditioner system control method as claimed in claim 17, is characterized in that, also comprise:
When described mode of operation is heating mode, described controller obtains the second pressure detecting signal by the second pressure sensor being arranged on described frequency-changeable compressor exit.
19. air conditioner system control method as claimed in claim 18, is characterized in that, described controller carries out VFC according to the operational factor of described frequency-changeable compressor to described frequency-changeable compressor and comprises further:
Described controller selects described first pressure detecting signal or the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation;
Described controller obtains target refrigerant saturation temperature;
Described controller carries out VFC according to described current refrigerant saturation temperature, described target refrigerant saturation temperature to described frequency-changeable compressor, wherein, to in the VFC process of described frequency-changeable compressor, described controller adjusts described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor.
20. air conditioner system control method as claimed in claim 19, is characterized in that, if when described off-premises station starts for the first time within the default work period, described controller determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
21. air conditioner system control method as claimed in claim 19, is characterized in that, also comprise:
When shutting down, described controller is using initial target refrigerant saturation temperature during next as described off-premises station for the described target refrigerant saturation temperature after adjustment start.
22. air conditioner system control method as claimed in claim 19, it is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further:
Described controller judges whether the running time of described frequency-changeable compressor is more than or equal to very first time threshold value;
If judge to be more than or equal to the described very first time threshold value running time of described frequency-changeable compressor, then described controller obtains the start-stop time of described frequency-changeable compressor in described first preset time period; And
If the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
23. air conditioner system control method as claimed in claim 19, it is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further:
Described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the second time threshold;
If judge to be more than or equal to described second time threshold the running time of described frequency-changeable compressor, then described controller obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively;
If described current operation frequency is less than running frequency before described second preset time period or described current running current and is less than running current before described second preset time period, then described controller keeps described target refrigerant saturation temperature constant;
If described current operation frequency is more than or equal to running frequency before described second preset time period or described current running current and is more than or equal to running current before described second preset time period, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
24. air conditioner system control method as claimed in claim 19, it is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further:
Described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 3rd time threshold;
If judge to be more than or equal to described 3rd time threshold the running time of described frequency-changeable compressor, then described controller obtains the start-stop time of described frequency-changeable compressor in described 3rd preset time period; And
If the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, then described controller judges whether described target refrigerant saturation temperature is more than or equal to default saturation temperature threshold value further;
If described target refrigerant saturation temperature is more than or equal to described default saturation temperature threshold value, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
25. air conditioner system control method as claimed in claim 19, it is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further:
Described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 4th time threshold;
If judge to be more than or equal to described 4th time threshold the running time of described frequency-changeable compressor, then described controller obtains the current operation frequency of described frequency-changeable compressor or current running current;
Judge whether the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value, or whether the current running current of described frequency-changeable compressor is more than or equal to predetermined current threshold;
If the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to described predeterminated frequency threshold value or described frequency-changeable compressor is more than or equal to described predetermined current threshold, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
26. air conditioner system control method as claimed in claim 19, it is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor, and described controller to adjust described target refrigerant saturation temperature according to the operational factor of described frequency-changeable compressor and comprises further:
Described controller judges whether the running time of described frequency-changeable compressor is more than or equal to the 5th time threshold;
If judge to be more than or equal to described 5th time threshold the running time of described frequency-changeable compressor and described frequency-changeable compressor did not stop machine, then described controller adjusts described target refrigerant saturation temperature according to default step-length.
27. air conditioner system control method as claimed in claim 16, is characterized in that, also comprise:
After the switching on and shutting down instruction receiving described off-premises station, described controller controls described off-premises station and postpones Preset Time start or shutdown.
The off-premises station of 28. 1 kinds of air-conditioning systems, is characterized in that, comprising:
Frequency-changeable compressor;
Controller, described controller is used for controlling described frequency-changeable compressor, and described controller comprises:
Starting module, for obtaining the mode of operation of air-conditioning system, and starting the frequency-changeable compressor of the off-premises station of described air-conditioning system according to the mode of operation of air-conditioning system;
Target refrigerant saturation temperature control module, for obtaining initial target refrigerant saturation temperature, and in the VFC process of described frequency-changeable compressor, the operational factor according to described frequency-changeable compressor adjusts described target refrigerant saturation temperature;
VFC module, for carrying out VFC according to described target refrigerant saturation temperature to described frequency-changeable compressor.
The off-premises station of 29. air-conditioning systems as claimed in claim 28; it is characterized in that; described target refrigerant saturation temperature control module, target refrigerant saturation temperature time also for the described target refrigerant saturation temperature after adjustment being started shooting as described off-premises station is next when shutting down.
The off-premises station of 30. air-conditioning systems as claimed in claim 28, is characterized in that, also comprise:
Be arranged on the first pressure sensor of described frequency-changeable compressor porch, described first pressure sensor generates the first pressure detecting signal when described mode of operation is refrigeration mode.
The off-premises station of 31. air-conditioning systems as claimed in claim 30, is characterized in that, also comprise:
Be arranged on second pressure sensor in described frequency-changeable compressor exit, described second pressure sensor generates the second pressure detecting signal when described mode of operation is heating mode.
The off-premises station of 32. air-conditioning systems as claimed in claim 31, it is characterized in that, described target refrigerant saturation temperature control module selects one of described first pressure detecting signal and the second pressure detecting signal to generate current refrigerant saturation temperature according to described mode of operation, and obtaining target refrigerant saturation temperature, described VFC module carries out VFC according to described current refrigerant saturation temperature, described target refrigerant saturation temperature to described frequency-changeable compressor.
The off-premises station of 33. air-conditioning systems as claimed in claim 28, is characterized in that, also comprise:
Temperature sensor, described temperature sensor detects the current environmental temperature of environment residing for described off-premises station, wherein, if when described off-premises station starts for the first time within the default work period, described target refrigerant saturation temperature control module determines described target refrigerant saturation temperature according to the current environmental temperature of described off-premises station.
The off-premises station of 34. air-conditioning systems as claimed in claim 28, is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the first preset time period of described frequency-changeable compressor.
The off-premises station of 35. air-conditioning systems as claimed in claim 34, it is characterized in that, the running time of described frequency-changeable compressor be more than or equal to very first time threshold value and the start-stop time of described frequency-changeable compressor in described first preset time period is more than or equal to the first preset times threshold value time, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
The off-premises station of 36. air-conditioning systems as claimed in claim 28, is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current.
The off-premises station of 37. air-conditioning systems as claimed in claim 36, it is characterized in that, when being more than or equal to the second time threshold the running time of described frequency-changeable compressor, described target refrigerant saturation temperature control module obtains running frequency before the current operation frequency of described frequency-changeable compressor or current running current and the second preset time period or running current respectively;
When running frequency before described current operation frequency is less than described second preset time period or described current running current are less than the running current before described second preset time period, described target refrigerant saturation temperature control module keeps described target refrigerant saturation temperature constant, and running frequency before described current operation frequency is more than or equal to described second preset time period or described current running current are when being more than or equal to the running current before described second preset time period, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
The off-premises station of 38. air-conditioning systems as claimed in claim 28, is characterized in that, the operational factor of described frequency-changeable compressor comprises running time and the start-stop time of described frequency-changeable compressor in the 3rd preset time period of described frequency-changeable compressor,
Wherein be more than or equal to the 3rd time threshold in the running time of described frequency-changeable compressor, the start-stop time of described frequency-changeable compressor in described 3rd preset time period is more than or equal to the second preset times threshold value, and described target refrigerant saturation temperature is when being more than or equal to default saturation temperature threshold value, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
The off-premises station of 39. air-conditioning systems as claimed in claim 28, is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor and the running frequency of described frequency-changeable compressor or running current,
Wherein be more than or equal to the 4th time threshold in the running time of described frequency-changeable compressor, and the current running current that the current operation frequency of described frequency-changeable compressor is more than or equal to predeterminated frequency threshold value or described frequency-changeable compressor is when being more than or equal to predetermined current threshold, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
The off-premises station of 40. air-conditioning systems as claimed in claim 28, it is characterized in that, the operational factor of described frequency-changeable compressor comprises the running time of described frequency-changeable compressor,
Wherein be more than or equal to the 5th time threshold in the running time of described frequency-changeable compressor, and when described frequency-changeable compressor did not stop machine, described target refrigerant saturation temperature control module adjusts described target refrigerant saturation temperature according to default step-length.
41. 1 kinds of air-conditioning systems, is characterized in that, comprise the off-premises station of the air-conditioning system as described in any one of claim 28-40.
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