CN106871343B - A kind of control method of air-conditioning, device and air-conditioning - Google Patents
A kind of control method of air-conditioning, device and air-conditioning Download PDFInfo
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- CN106871343B CN106871343B CN201710064205.XA CN201710064205A CN106871343B CN 106871343 B CN106871343 B CN 106871343B CN 201710064205 A CN201710064205 A CN 201710064205A CN 106871343 B CN106871343 B CN 106871343B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/195—Pressures of the condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/197—Pressures of the evaporator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Atmospheric Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method of air-conditioning, device and air-conditionings, belong to air-conditioning technical field.Control method includes: the target fluid pressure for obtaining second throttling device；The flow aperture for adjusting second throttling device and third throttling set, makes initial fluid pressure reach target fluid pressure；The target outlet pressure of first throttling device is obtained, target outlet pressure is the pressure for the refrigerant that first throttling device inputs gas-liquid separator；The flow aperture for adjusting first throttling device, makes initial outlet pressure reach target outlet pressure.Control method of the invention is exchanged heat by control electric control element with the gaseous coolant for flowing through radiator, and the flow aperture of throttling set can be adjusted according to preset tonifying Qi temperature, to make the refrigerant after heat exchange can satisfy the pressure requirements of compressor Gas-supplying enthalpy-increasing, the performance of air-conditioning entirety is improved.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of control method of air-conditioning, device and air-conditioning.
Background technique
Currently on the market determine frequency or convertible frequency air-conditioner product, through pressing when air-conditioning is run in the excessively high situation of summer outdoor temperature
The enthalpy of the compressed refrigerant of contracting machine is not able to satisfy the enthalpy requirement of heat exchange, leads to the refrigerant and outdoor environment that flow into condenser
Heat exchange efficiency reduces, it is therefore desirable to carry out Gas-supplying enthalpy-increasing operation to compressor；And existing Gas-supplying enthalpy-increasing is mostly using will be outdoor
Refrigerant after exchanging heat in machine condenser is directly filled with the mode in compressor, and refrigerant temperature tends not to reach optimal tonifying Qi
Increasing enthalpy temperature requirement.
Summary of the invention
The embodiment of the invention provides a kind of control method of air-conditioning, device and air-conditionings, it is intended to solve compressor enthalpy amount not
The problem of foot.In order to which some aspects of the embodiment to disclosure have a basic understanding, simple summary is shown below.It should
Summarized section is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments.
Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
According to the first aspect of the invention, a kind of control method of air-conditioning is provided, comprising: obtain second throttling device
Target fluid pressure；The flow aperture for adjusting second throttling device and third throttling set, makes initial fluid pressure reach mesh
Mark hydraulic coupling；The target outlet pressure of first throttling device is obtained, target outlet pressure is that first throttling device inputs gas-liquid
The pressure of the refrigerant of separator；By adjusting the flow aperture of first throttling device, initial outlet pressure is made to reach target outlet
Pressure.
Further, the target fluid pressure of second throttling device is obtained, comprising: obtain evaporating pressure and the condensation of air-conditioning
Pressure；According to evaporating pressure and condensing pressure, calculates and determine target fluid pressure；The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PeFor evaporating pressure, PcFor condensing pressure.
Further, by adjusting the flow aperture of second throttling device and third throttling set, make initial fluid pressure
Reach target fluid pressure, comprising: when initial fluid pressure is greater than target fluid pressure, control second throttling device with first
Aperture rate improves its flow aperture, and controls third throttling set and reduce its flow aperture with the first aperture rate, makes initial
Fluid pressure reaches target fluid pressure；Initial fluid pressure be less than target fluid pressure when, control second throttling device with
First aperture rate reduces its flow aperture, and controls third throttling set and improve its flow aperture with the first aperture rate, makes
Initial fluid pressure reaches target fluid pressure；When initial fluid pressure is equal to target fluid pressure, first throttle dress is maintained
Set, the flow aperture of second throttling device and third throttling set it is constant.
Further, the target outlet pressure of first throttling device is obtained, comprising: obtain the pressure of inspiration(Pi) of compressor of air conditioner
And pressure at expulsion；According to pressure of inspiration(Pi) and pressure at expulsion, the target outlet pressure for determining first throttling device is calculated；Target outlet
The calculation formula of pressure are as follows:
Wherein, PTarget outletFor target outlet pressure, PsFor pressure of inspiration(Pi), PtFor pressure at expulsion.
Further, by adjusting the flow aperture of first throttling device, so that initial outlet pressure is reached target and go out air pressure
Power, comprising: when initial outlet pressure is greater than target outlet pressure, controls first throttling device with the second aperture rate and improve it
Flow aperture makes initial outlet pressure reach target outlet pressure；When initial outlet pressure is less than target outlet pressure, control
First throttling device reduces its flow aperture with the second aperture rate, and initial outlet pressure is made to reach target outlet pressure；First
When beginning outlet pressure is equal to target outlet pressure, maintain the flow aperture of first throttling device constant.
According to the second aspect of the invention, a kind of control device of air-conditioning is additionally provided, comprising: acquiring unit is used for
Obtain the target fluid pressure of second throttling device；And the target outlet pressure of first throttling device is obtained, target goes out air pressure
Power is the pressure for the refrigerant that first throttling device inputs gas-liquid separator；Main control unit, for adjusting second throttling device and
The flow aperture of three throttling sets, makes initial fluid pressure reach target fluid pressure；And adjust the stream of first throttling device
Aperture is measured, initial outlet pressure is made to reach target outlet pressure.
Further, acquiring unit is used for: obtaining evaporating pressure and condensing pressure that air-conditioning detects；According to evaporation
Pressure and condensing pressure calculate and determine target fluid pressure；The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PeFor evaporating pressure, PcFor condensing pressure.
Further, main control unit is used for: when initial fluid pressure is greater than target fluid pressure, control the second throttling dress
It sets and its flow aperture is improved with the first aperture rate, and control third throttling set its flow is reduced with the first aperture rate and open
Degree, makes initial fluid pressure reach target fluid pressure；And when initial fluid pressure is less than target fluid pressure, control the
Two throttling sets reduce its flow aperture with the first aperture rate, and control third throttling set and improve it with the first aperture rate
Flow aperture makes initial fluid pressure reach target fluid pressure；And when initial fluid pressure is equal to target fluid pressure,
Maintain the flow aperture of first throttling device, second throttling device and third throttling set constant.
Further, acquiring unit is used for: obtaining the pressure of inspiration(Pi) and pressure at expulsion of the compressor that air-conditioning detects；
According to pressure of inspiration(Pi) and pressure at expulsion, the target outlet pressure for determining first throttling device is calculated；The calculating of target outlet pressure
Formula are as follows:
Wherein, PTarget outletFor target outlet pressure, PsFor pressure of inspiration(Pi), PtFor pressure at expulsion.
Further, main control unit is used for: when initial outlet pressure is greater than target outlet pressure, control first throttle dress
It sets and its flow aperture is improved with the second aperture rate, initial outlet pressure is made to reach target outlet pressure；And in initial outlet
When pressure is less than target outlet pressure, controlling first throttling device with the second aperture rate reduces its flow aperture, makes initially to go out
Atmospheric pressure reaches target outlet pressure；And when initial outlet pressure is equal to target outlet pressure, maintain first throttling device
Flow aperture it is constant.
According to the third aspect of the present invention, a kind of air-conditioning is additionally provided, air-conditioning includes the interior with First Heat Exchanger
Machine, the outdoor unit with the second heat exchanger, compressor and gas-liquid separator, the gas outlet of gas-liquid separator and the air-breathing of compressor
Mouth is connected, and electrical control member is located outside in machine, and First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline and the second pipe
Road is connected, and for constituting refrigerant circulation circuit, air-conditioning further includes cooling component, and cooling component has flash evaporation, first throttle
Device and radiator for radiating for electrical control member, wherein flash evaporation is connected on the first pipeline, and radiator passes through cooling line
It is connected to respectively with the air inlet of gas-liquid separator, flash evaporation, first throttling device is arranged between gas-liquid separator and radiator
Cooling line on, air-conditioning have be set on the first pipeline between the second heat exchanger and flash evaporation second throttling device,
And it is set to the third throttling set on the first pipeline between First Heat Exchanger and flash evaporation, air-conditioning is provided with for detecting
First sensor, the evaporating pressure for detecting second sensor or the condensation of the evaporating pressure or condensing pressure of First Heat Exchanger
The second sensor of pressure, the 3rd sensor of outlet pressure for detecting first throttling device, for detecting the second section
Flow the 4th sensor of the fluid pressure of device, and the 5th sensing of the pressure of inspiration(Pi) for detecting compressor and pressure at expulsion
Device.
Control method of the invention is exchanged heat by control electric control element with the gaseous coolant for flowing through radiator, to realize to electricity
The heat exchange cooling of element is controlled, while the flow aperture of throttling set can also be adjusted according to preset tonifying Qi temperature, to make to change
The part refrigerant after heat can satisfy the pressure requirements of compressor Gas-supplying enthalpy-increasing, improve the performance of air-conditioning entirety.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the flow chart one of control method of the present invention；
Fig. 2 is the flowchart 2 of control method of the present invention；
Fig. 3 is the overall structure diagram of air-conditioning of the present invention；
Fig. 4 is the pressure-enthalpy chart of refrigerant circulation in air-conditioning of the present invention；
Fig. 5 is the tephigram of refrigerant circulation in air-conditioning of the present invention.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, each embodiment individually or can be indicated generally with term " invention ", and it is convenient that this is used for the purpose of,
And if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, relational terms such as first and second and the like be used only for by an entity or operation with
Another entity or operation distinguish, and without requiring or implying, there are any actual relationships between these entities or operation
Or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, thus
So that process, method or equipment including a series of elements not only include those elements, but also including being not explicitly listed
Other element, or further include for this process, method or the intrinsic element of equipment.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in process, method or equipment including the element
In there is also other identical elements.Each embodiment herein is described in a progressive manner, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For implementing
For method, product etc. disclosed in example, since it is corresponding with method part disclosed in embodiment, so the comparison of description is simple
Single, reference may be made to the description of the method.
As depicted in figs. 1 and 2, the present invention provides a kind of control method of air-conditioning, the key step of control method includes:
S101, the target fluid pressure for obtaining second throttling device；
By taking operation of air conditioner refrigeration mode as an example, refrigerant is after the outflow of the second heat exchanger of outdoor unit, in second throttling device
Once throttled, then flash evaporation shunt, wherein gaseous coolant along cooling line flow to first throttling device carry out it is secondary
Throttling, liquid refrigerants continues to carry out second throttle along the first tube runs and through third throttling set, therefore refrigerant is in the second section
It flows the pressure change in a throttling process of device and influences whether subsequent compressor Gas-supplying enthalpy-increasing efficiency and indoor heat exchange effect
Rate, therefore the target that obtain the initial fluid pressure of second throttling device and air-conditioning is made to reach optimum Working is hydraulic out
The parameter informations such as power；
The initial fluid pressure of second throttling device can be by being set to the 4th of the liquid outlet position of second throttling device
Sensor detects to obtain；
S102, the flow aperture for adjusting second throttling device and third throttling set, make initial fluid pressure reach target
Fluid pressure；
In embodiment, control method of the invention first passes through the second throttling device and third that control is located on the first pipeline
The flow aperture of throttling set, to make the initial fluid pressure of second throttling device reach target fluid pressure, and then can
Meet the refrigerant pressure requirement of indoor heat exchange；
S103, the target outlet pressure for obtaining first throttling device, target outlet pressure are that first throttling device inputs gas
The pressure of the refrigerant of liquid/gas separator；
In embodiment, the first throttling device in air-conditioning system is connected to gas-liquid separator, therefore flows through first throttling device
Refrigerant be that Gas-supplying enthalpy-increasing is played the role of to compressor by gas-liquid separator, in order to guarantee compressor compression ratio, improve pressure
The compression efficiency of contracting machine, therefore the refrigerant for filling into compressor needs to meet the target outlet pressure of setting；
The initial outlet pressure of first throttling device can be by being set to the third of the gas outlet position of first throttling device
Sensor detects to obtain；
S104, the flow aperture for adjusting first throttling device, make initial outlet pressure reach target outlet pressure.The present invention
Control method is opened according to the pressure parameter information of throttling set and compressor by the flow of three throttling sets of control and regulation
Degree, can meet indoor heat exchange demand, the radiating requirements of electric control element simultaneously, and enable the refrigerant after exchanging heat with electric control element
Enough reach the pressure demand of compressor Gas-supplying enthalpy-increasing, to keep air-conditioning system whole with the operation of optimal working condition, improves it
Service performance.
During this refrigerant circulation, between first throttling device, second throttling device and third throttling set three
Flow adjusting intercouples, and no matter adjusts which throttling set, can all cause the variation of remaining throttling set, therefore this
Invention control method core adjusted is the coolant quantity needs for preferentially meeting basic air-conditioning to indoor environment cooling heat exchange, then full
Sufficient cooling component carries out the refrigerant needs of cooling and compressor Gas-supplying enthalpy-increasing to electric control element, compared to indoor cooling heat exchange institute
The cold medium flux needed, coolant quantity needed for cooling component cooling and compressor Gas-supplying enthalpy-increasing is less, because hereafter adjusting cooling group
The mode of first throttling device in part is relatively small to the flow effect of remaining throttling set, therefore the adjusting behaviour in embodiment
Make process specially first adjust second and third throttling set flow aperture to meet basic indoor refrigeration needs, then adjust the
One throttling set is to meet the needs that radiator cools down, wherein the first throttling device adjusted afterwards can cause second throttling device
With the changes in flow rate of third throttling set, can the aperture to second throttling device and third throttling set finely tune in right amount.
In some embodiments of the invention, the specific steps for obtaining the target fluid pressure of second throttling device include:
Detect the evaporating pressure and condensing pressure of air-conditioning；In embodiment, when operation of air conditioner refrigeration mode, evaporating pressure passes through
It is set to the first sensor at the First Heat Exchanger of indoor unit to detect to obtain, condensing pressure is by being set to outdoor unit
Second sensor at second heat exchanger detects to obtain；
According to evaporating pressure and condensing pressure, calculate and determine target fluid pressure, in embodiment, target fluid pressure its
A kind of middle calculation formula are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PeFor evaporating pressure, PcFor condensing pressure, by theoretical calculation, in target
When fluid pressure can reach fluid pressure corresponding to above-mentioned evaporating pressure and condensing pressure, the cooling system heating capacity of air-conditioning
Maximal efficiency can be reached, therefore control method of the present invention is adjusted accordingly using the target fluid pressure as target component
It is whole.
In some embodiments of the invention, by adjusting the flow aperture of second throttling device and third throttling set,
So that initial fluid pressure reaches target fluid pressure, specific steps include:
When initial fluid pressure is greater than target fluid pressure, second throttling device is controlled with the first aperture rate and improves it
Flow aperture, and control third throttling set its flow aperture is reduced with the first aperture rate, until initial fluid pressure reaches
Target fluid pressure；
When initial fluid pressure is less than target fluid pressure, controlling second throttling device with the first aperture rate reduces it
Flow aperture, and control third throttling set and its flow aperture is improved with the first aperture rate, until initial fluid pressure reaches
Target fluid pressure；
When initial fluid pressure is equal to target fluid pressure, first throttling device, second throttling device and third are maintained
The flow aperture of throttling set is constant.
In control method of the present invention, by with the aperture rate adaptation second throttling device of setting and third throttling set
Flow aperture can make the pressure change of the liquid outlet of throttling set more steady, avoid increasing or decreasing throttling set suddenly
Aperture caused by refrigerant it is turbulent the problems such as.Wherein, the setting of aperture rate can go out according to initial fluid pressure and target
The difference of hydraulic coupling determines, in order to improve the rate of fluid pressure adjusting, in the difference of initial fluid pressure and target fluid pressure
When being worth larger, aperture rate is also set to biggish numerical value；Similarly, when difference is smaller, aperture rate is then set as lesser
Numerical value.
In some embodiments of the invention, the step of obtaining the target outlet pressure of first throttling device include:
Detect the pressure of inspiration(Pi) and pressure at expulsion of compressor of air conditioner；In embodiment, pressure of inspiration(Pi) and pressure at expulsion can pass through
It is set to the 5th sensor detection at compressor to reach, the 5th sensor has the first sense of the air entry for being set to compressor
Answer the second induction terminal of terminal, the exhaust outlet for being set to compressor；
According to pressure of inspiration(Pi) and pressure at expulsion, the target outlet pressure for determining first throttling device is calculated；Target goes out air pressure
The calculation formula of power are as follows:
Wherein, PTarget outletFor target outlet pressure, PsFor pressure of inspiration(Pi), PtFor pressure at expulsion, the embodiment of the present invention is with two
For grade compressor, the refrigerant pressure that in-between gas supplementing opening is filled into is the average value of pressure of inspiration(Pi) and pressure at expulsion, works as compression
When machine is the compound compressor of three-level or more, target outlet pressure can be calculated according to the specific tonifying Qi position of gas supplementing opening and be determined.
In some embodiments of the invention, by adjusting the flow aperture of first throttling device, so as to initially go out air pressure
Power reaches target outlet pressure, comprising:
When initial outlet pressure is greater than target outlet pressure, first throttling device is controlled with the second aperture rate and improves it
Flow aperture, until initial outlet pressure reaches target outlet pressure；
When initial outlet pressure is less than target outlet pressure, controlling first throttling device with the second aperture rate reduces it
Flow aperture, until initial outlet pressure reaches target outlet pressure；
When initial outlet pressure is equal to target outlet pressure, maintain the flow aperture of first throttling device constant.
It, can by with the flow aperture of the aperture rate adaptation first throttling device of setting in control method of the present invention
Keep the pressure change of the gas outlet of first throttling device more steady, the aperture for increasing or decreasing throttling set suddenly is avoided to be led
The problems such as refrigerant of cause is turbulent.Wherein, the setting of aperture rate can be according to the difference of initial outlet pressure and target outlet pressure
Value determines, opens to improve the rate of outlet pressure adjusting when the difference of initial outlet pressure and target outlet pressure is larger
Degree rate is also set to biggish numerical value；Similarly, when difference is smaller, aperture rate is then set as lesser numerical value.
The present invention also provides a kind of control devices of air-conditioning, and the control device is using the control disclosed in above-described embodiment
Method processed controls air-conditioning accordingly, and device specifically includes that
Acquiring unit, for obtaining the target fluid pressure of second throttling device；And obtain the mesh of first throttling device
Atmospheric pressure is marked, target outlet pressure is the pressure for the refrigerant that first throttling device inputs gas-liquid separator；
Main control unit makes initial fluid pressure for adjusting the flow aperture of second throttling device and third throttling set
Reach target fluid pressure；And the flow aperture of first throttling device is adjusted, so that outlet pressure is reached target outlet pressure.
In some embodiments of the invention, acquiring unit is also used to: obtain the evaporating pressure that detects of air-conditioning with
Condensing pressure；According to evaporating pressure and condensing pressure, calculates and determine target fluid pressure；
The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PeFor evaporating pressure, PcFor condensing pressure.
In some embodiments of the invention, main control unit is used for: when initial fluid pressure is greater than target fluid pressure,
It controls second throttling device and its flow aperture is improved with the first aperture rate, and control third throttling set with the first aperture rate
Its flow aperture is reduced, until initial fluid pressure reaches target fluid pressure；And go out in initial fluid pressure less than target
When hydraulic coupling, controlling second throttling device with the first aperture rate reduces its flow aperture, and controls third throttling set with the
One aperture rate improves its flow aperture, until initial fluid pressure reaches target fluid pressure；And in initial fluid pressure
When equal to target fluid pressure, maintain the flow aperture of first throttling device, second throttling device and third throttling set constant.
In some embodiments of the invention, acquiring unit is used for: obtaining the air-breathing for the compressor that air-conditioning detects
Pressure and pressure at expulsion；According to pressure of inspiration(Pi) and pressure at expulsion, the target outlet pressure for determining first throttling device is calculated；Target
The calculation formula of outlet pressure are as follows:
Wherein, PTarget outletFor target outlet pressure, PsFor pressure of inspiration(Pi), PtFor pressure at expulsion.
In some embodiments of the invention, main control unit is used for: when initial outlet pressure is greater than target outlet pressure,
It controls first throttling device and its flow aperture is improved with the second aperture rate, until initial outlet pressure reaches target and goes out air pressure
Power；And when initial outlet pressure is greater than target outlet pressure, controlling first throttling device with the second aperture rate reduces it
Flow aperture, until initial outlet pressure reaches target outlet pressure；And it is equal to target outlet pressure in initial outlet pressure
When, maintain the flow aperture of first throttling device constant.
Air conditioner structure applied by control method and control device in above-described embodiment is as shown in figure 3, the air-conditioning system
Including indoor unit and outdoor unit, wherein indoor unit includes the First Heat Exchanger 1 to exchange heat with indoor environment, and outdoor unit includes
The second heat exchanger 2 for exchanging heat with outdoor environment, for providing the compressor 3 of circulation power, computer board, single-chip microcontroller for refrigerant
Etc. electrical control members be set in outdoor unit, First Heat Exchanger 1, the second heat exchanger 2 and compressor 3 pass through the first pipeline 4 and the second pipe
Road 5 is connected, for constituting conventional refrigerant circulation circuit, in embodiment, air-conditioning system in summer operation refrigeration mode, with
Refrigerant after outdoor environment heat exchange is flowed out out of second heat exchanger 2, flows into First Heat Exchanger 1 via the first pipeline 4, meanwhile,
It is flowed out with the refrigerant after indoor environment heat exchange from First Heat Exchanger 1, the second heat exchanger 2 is flowed into via the second pipeline 5, by this
Refrigerant circulation process, it can be achieved that air-conditioning system to the refrigeration cool-down function of indoor environment.Similarly, heating mode is run in winter
When, refrigerant flows between First Heat Exchanger 1 and the second heat exchanger 2 along the direction opposite with refrigeration mode.Air-conditioning system can be achieved
Heating heating function of the system to indoor environment.
In addition to above-mentioned conventional refrigerant circulation circuit, air-conditioning system of the invention further includes cooling tube group, for solving electricity
Temperature excessively high problem when control works.
Specifically, cooling tube group mainly includes 9 two parts of cooling component and cooling line, wherein cooling component is mainly wrapped
It includes:
Flash evaporation 6, flash evaporation 6 are connected on the first pipeline 4, the operative liquid refrigerant for flowing through the first pipeline 4 can be steamed
Hair is gaseous coolant, and gaseous coolant is delivered in cooling line 9, thus subsequent as cooling line 9 using gaseous coolant
Heat transferring medium in cooling procedure；
First throttling device 801 is set on the first pipeline 4, for adjusting stream of the gaseous coolant in cooling line 9
Amount, and the pressure and the temperature that adjust the refrigerant after electrical control member heat exchange etc., so that pressure can be met by flowing into the refrigerant of compressor 3
The needs of 3 Gas-supplying enthalpy-increasing of contracting machine；
Radiator 7, radiator 7 is connected on cooling line 9 and neighbouring electrical control member is arranged, since electrical control member is arranged in mostly
In the semienclosed containers such as electric-controlled box, therefore radiator 7 can be used as the heat-exchange carrier of gaseous coolant Yu electrical control member surrounding air, lead to
Cross and cool down to the surrounding air of electric control element, so can by the temperature of electrical control member itself control safe working temperature with
Under.The specific structure and type of radiator 7 can be arranged on cooling line 9 in embodiment according to the structure determination of outdoor unit
7 type of radiator is advection heat exchanger, and advection heat exchanger has many advantages, such as that heat transfer rate is high, space hold is small, it is tight to be suitable for structure
The air conditioner outdoor unit structure gathered.
For sequence of flow of the refrigerant for electrical control member radiating and cooling in cooling tube group are as follows: first 4 → flash evaporation of pipeline 6
7 → gas-liquid separator of → radiator, 10 → compressor 3, first throttling device 801 can according to need setting in flash evaporation 6 and pressure
On cooling line 9 between contracting machine 3.
It is mostly that the refrigerant in refrigerant pipeline is directly delivered to compressor 3 in the Gas-supplying enthalpy-increasing structure of conventional air conditioning system
In, during this, the parameters such as temperature and pressure of refrigerant do not have too big variation, and in air-conditioning system of the invention, stream
The temperature of gaseous coolant through radiator 7 increases, pressure increases, therefore reduces the subsequent compression efficiency to refrigerant of compressor 3, is
Solve the problems, such as this, in one embodiment of the invention, air-conditioning system further includes second throttling device 802 and third throttling dress
Set 803, wherein second throttling device 802 is set on the first pipeline 4 between the second heat exchanger 2 and flash evaporation 6, third section
Stream device 803 is set on the first pipeline 4 between First Heat Exchanger 1 and flash evaporation 6, compared to the air-conditioning of conventional Gas-supplying enthalpy-increasing
The advantages of structure, air-conditioning system setting second throttling device 802 and third throttling set 803, is: with operation of air conditioner refrigeration mould
For formula, liquid refrigerants is arranged before flowing into flash evaporation 6 by the second heat exchanger 2 of outdoor unit in the second heat exchanger 2 and shwoot
Second throttling device 802 between device 6 can one step ahead throttle to refrigerant, reduce the pressure of refrigerant, be convenient for flash evaporation 6 will
Liquid refrigerants is evaporated to gaseous coolant, simultaneously as the temperature of refrigerant is lower, so can also increase refrigerant at radiator 7
Heat exchange amount, in an embodiment of the present invention, by adjust first throttling device 801 and second throttling device 802 aperture, from
And flow of the adjustable refrigerant in cooling line 9, the refrigerant that compressor 3 is flowed to from first throttling device 801 can be made
Temperature and pressure, the temperature and pressure compared to the refrigerant for flowing to second throttling device 802 from the second heat exchanger 2 are lower.
Since operative liquid refrigerant is flowed into cooling line 9 in the form of gaseous coolant at flash evaporation 6, in order to guarantee to flow
The temperature and pressure for entering the First Heat Exchanger 1 of indoor unit meet actual indoor heat exchange demand, and setting is in First Heat Exchanger 1 and dodges
Third throttling set 803 between hair device 6 can play the role of throttle expansion valve, for adjusting the refrigerant of outflow flash evaporation 6
The parameters such as temperature and pressure.
Above-described embodiment is for running refrigeration mode under summer high temperature operating condition by air-conditioning, similarly, low temperature work in winter
Under condition, outdoor cryogenic conditions will affect the heat exchange amount of outdoor unit and outdoor environment, when to guarantee that air-conditioning system runs heating mode
Heating capacity, also need to execute compressor 3 Gas-supplying enthalpy-increasing operation, and in operation of air conditioner heating mode, refrigerant is in air-conditioning
Flow direction and refrigeration mode in pipeline is on the contrary, at this point, the third throttling set being arranged between First Heat Exchanger 1 and flash evaporation 6
803 can play throttling action of the second throttling device 802 under cooling condition, adjust the refrigerant for flowing into flash evaporation 6 one step ahead
The parameters such as temperature and pressure, and second throttling device 802 then plays the role of ending expansion valve, for adjusting from flash evaporation 6
The parameters such as outflow, the temperature and pressure of refrigerant of the second heat exchanger 2 for flowing into outdoor unit.It is cold under above two operating condition to realize
Matchmaker's adjustment process, second throttling device 802 of the present invention and third throttling set 803 are bidirectional throttling device.
The outdoor unit of air-conditioning system further includes the gas-liquid separator 10 for storing and conveying to compressor 3 refrigerant, compression
Machine 3 includes at least one stage of compression portion and secondary compressing portion, wherein one stage of compression portion is cold for being flowed into gas-liquid separator 10
Matchmaker carries out one stage of compression, and secondary compressing portion is used to carry out two-stage compression to refrigerant, and the refrigerant for exporting compressor 3 can satisfy room
Outer the second heat exchanger of machine 2 externally exchanges heat required temperature and pressure.
In one embodiment of the invention, flash evaporation 6 and the first pipeline 4 are connected in series, the primary structure packet of flash evaporation 6
The gaseous coolant portion for including liquid refrigerants portion, being connected with liquid refrigerants portion, wherein liquid refrigerants portion has goes here and there with the first pipeline 4
Join the inlet and liquid outlet of connection, and flows to first gas outlet in gaseous coolant portion, gaseous coolant portion for gaseous coolant
Also there is the second gas outlet of connection cooling line 9.
Correspondingly, radiator 7 has the input end and gas-liquid separator being connected with second gas outlet in gaseous coolant portion
The outlet end that 10 air inlet is connected.
In another embodiment of the invention, flash evaporation 6 is connected in parallel with the first pipeline 4, and flash evaporation 6 corresponding first is managed
It is provided with shut-off valve on the parallel transistor section on road 4, unlatching or the pass of control first throttling device 801 and shut-off valve can be passed through
It closes, to be connected or block refrigerant pipeline and the corresponding parallel transistor section where flash evaporation 6, for example, can be by opening simultaneously
The shut-off valve in union section closes first throttling device 801, and refrigerant is made to be not passed through cooling line 9, is suitable for electrical control member calorific value
Less, temperature is maintained at the situation of safe working temperature or less, is also applied for the operating condition that compressor 3 is not necessarily to Gas-supplying enthalpy-increasing.
Meanwhile form is connected in parallel for above-mentioned flash evaporation 6, it by control first throttling device 801 and can also cut
The only flow aperture of valve adjusts the coolant quantity for flowing into indoor unit First Heat Exchanger 1 and mends for electrical control member heat dissipation or compressor 3
The coolant quantity of gas increasing enthalpy, so that air-conditioning system integrally maintains optimal working condition.
Optionally, the first throttling device 801 in cooling component is set to the cooling tube between radiator 7 and compressor 3
On road 9, the not only refrigerant flow rate flow in adjustable cooling line 9, additionally it is possible to play the role of expansion valve, to gaseous coolant
Second throttle is carried out, to reduce the temperature and pressure of refrigerant, is imitated so as to improve compressor 3 to the compression of mixed refrigerant
Rate.
In one embodiment of the invention, air-conditioning system is provided with the first sensor for detecting room temperature, can
To adjust the aperture of first throttling device 801 and second throttling device 802 according to detected room temperature, to meet to room
The coolant quantity demand that interior environment exchanges heat.
As shown in Figure 4 and Figure 5, in a chiller mode, refrigerant in the Air Conditioning Cycle flow process, enthalpy and
The change procedure of entropy are as follows: the refrigerant in gas-liquid separator in state point K flows into compressor 3 from air entry, via level-one pressure
Contracting portion and secondary compressing portion are the refrigerant in state point D by isentropic Compression, and are discharged from the exhaust outlet of compressor；Compressor 3
Refrigerant in state point D is inputted into the second heat exchanger 2, liquid point E is cooled to by outdoor environment；Refrigerant is along the second heat exchanger 2
Outlet enter the first pipeline 4, by 802 isenthalpic throttling of second throttling device to state point F, then flow into flash evaporation 6；From sudden strain of a muscle
The refrigerant for sending out the liquid outlet outflow in the liquid refrigerants portion of device 6 is in state point G, throttles through third stream device to state point I, enters
First Heat Exchanger 1 becomes state point J after carrying out heat absorption evaporation, and is discharged from the outlet of First Heat Exchanger, then passes through the second pipe
Road 5 is back to gas-liquid separator 10, and refrigerant is in state point A at this time；Meanwhile second from the gaseous coolant portion of flash evaporation 6 goes out
Port outflow gaseous coolant is in state point H, becomes state point C after flowing through parallel-flow heat exchanger and exchanging heat with electrical control member, it
Refrigerant, which carries out decompression cooling by first throttling device 801, afterwards becomes state point B, and mixes with the refrigerant flowed along the second pipeline 5
The refrigerant in state point K is formed after conjunction to flow into gas-liquid separator 10.
In the above-mentioned refrigerant circulation of the present invention, electrical control member cooling and 3 Gas-supplying enthalpy-increasing of compressor, two mistakes are reduced to realize
Journey interferes with each other influence, can pass through control first throttling device 801, second throttling device 802 and third throttling set 803
Flow aperture is realized, for example, the refrigerant flowed out from the second heat exchanger 2 of outdoor unit is passing through in the embodiment of above-mentioned diagram
After crossing the throttling of second throttling device 802, refrigerant becomes F from state point E, and process is isenthalpic throttling, and the enthalpy of refrigerant is constant,
Pressure reduction, while entropy increases, temperature reduces；The refrigerant for flowing through first throttling device 801 becomes state point B from state point C,
Its process is also isenthalpic throttling, and the enthalpy of refrigerant is constant, pressure reduction, while entropy increases, and temperature reduces, and improves compressor 3
The efficiency of second-compressed is carried out to mixed refrigerant；The refrigerant of third throttling set 803 is flowed to by state point G from flash evaporation 6
Becoming state point I, process is isenthalpic throttling, and the enthalpy of refrigerant is constant, pressure reduction, while entropy increases, and temperature reduces, from
And the cooling heat exchange after improving the First Heat Exchanger 1 that refrigerant enters the room machine, with indoor environment.
In one embodiment of the invention, air-conditioning is provided with evaporating pressure or condensation pressure for detecting First Heat Exchanger
The first sensor of power, the second sensor of the evaporating pressure for detecting the second heat exchanger or condensing pressure, for detecting the
The 3rd sensor of the outlet pressure of one throttling set, the 4th sensing of fluid pressure for detecting second throttling device
Device, and the 5th sensor of the pressure of inspiration(Pi) for detecting compressor and pressure at expulsion, can be according to detected correlation
Pressure parameter adjusts first throttling device 801, second throttling device 802 and third throttling set 803, so that air-conditioning is not influencing
In the case where indoor heat exchange efficiency, the cold medium flux for radiating to electrical control member is increased or decreased.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims
System.
Claims (11)
1. a kind of control method of air-conditioning, which is characterized in that air-conditioning includes the indoor unit with First Heat Exchanger, has second to change
The outdoor unit of hot device, compressor and gas-liquid separator, the air entry phase of the gas outlet of the gas-liquid separator and the compressor
Connection, is equipped with electrical control member in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline and the
Two pipelines are connected, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, and the cooling component has shwoot
Device, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation is connected to first pipe
On the road, the radiator is connected to respectively by cooling line with the air inlet of the gas-liquid separator, the flash evaporation, and described the
One throttling set is arranged on the cooling line between the gas-liquid separator and the radiator, and the air-conditioning, which has, to be set
The second throttling device on the first pipeline that is placed between second heat exchanger and the flash evaporation and it is set to described
The third throttling set on the first pipeline between one heat exchanger and the flash evaporation, the air-conditioning are provided with described for detecting
The first sensor of the evaporating pressure of First Heat Exchanger or condensing pressure, the evaporating pressure for detecting second heat exchanger or
The second sensor of condensing pressure, the 3rd sensor of outlet pressure for detecting the first throttling device, for detecting
4th sensor of the fluid pressure of the second throttling device, and pressure of inspiration(Pi) and exhaust for detecting the compressor
5th sensor of pressure；
The control method includes:
Obtain the target fluid pressure of second throttling device；
The flow aperture for adjusting the second throttling device and third throttling set makes initial fluid pressure reach the target and goes out
Hydraulic coupling；
The target outlet pressure of first throttling device is obtained, the target outlet pressure is that first throttling device inputs gas-liquid separation
The pressure of the refrigerant of device；
The flow aperture for adjusting the first throttling device makes initial outlet pressure reach the target outlet pressure.
2. control method according to claim 1, which is characterized in that the target for obtaining the second throttling device goes out
Hydraulic coupling, comprising:
Obtain the evaporating pressure and condensing pressure of air-conditioning；
According to the evaporating pressure and the condensing pressure, target fluid pressure is determined；
The calculation formula of the target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor the target fluid pressure, PeFor the evaporating pressure, PcFor the condensing pressure.
3. control method according to claim 2, which is characterized in that adjust the second throttling device and third throttling dress
The flow aperture set makes the initial fluid pressure reach the target fluid pressure, comprising:
When the initial fluid pressure is greater than the target fluid pressure, the second throttling device is controlled with the first aperture speed
Rate improves its flow aperture, and controls the third throttling set and reduce its flow aperture with the first aperture rate, make it is described just
Beginning fluid pressure reaches the target fluid pressure；
When the initial fluid pressure is less than the target fluid pressure, the second throttling device is controlled with the first aperture speed
Rate reduces its flow aperture, and controls the third throttling set and improve its flow aperture with the first aperture rate, makes described first
Beginning fluid pressure reaches the target fluid pressure；
When the initial fluid pressure is equal to the target fluid pressure, the first throttling device, the second throttling dress are maintained
It sets constant with the flow aperture of third throttling set.
4. control method according to claim 1, which is characterized in that the target for obtaining the first throttling device goes out
Atmospheric pressure, comprising:
Obtain the pressure of inspiration(Pi) and pressure at expulsion of compressor of air conditioner；
According to the pressure of inspiration(Pi) and the pressure at expulsion, the target outlet pressure of the first throttling device is determined；
The calculation formula of the target outlet pressure are as follows:
Wherein, PTarget outletFor the target outlet pressure, PsFor the pressure of inspiration(Pi), PtFor the pressure at expulsion.
5. control method according to claim 4, which is characterized in that the flow by adjusting the first throttling device is opened
Degree, makes the initial outlet pressure reach the target outlet pressure, comprising:
When the initial outlet pressure is greater than the target outlet pressure, the first throttling device is controlled with the second aperture speed
Rate improves its flow aperture, and the initial outlet pressure is made to reach the target outlet pressure；
When the initial outlet pressure is less than the target outlet pressure, the first throttling device is controlled with the second aperture speed
Rate reduces its flow aperture, and the initial outlet pressure is made to reach the target outlet pressure；
When the initial outlet pressure is equal to the target outlet pressure, the flow aperture of the first throttling device is maintained not
Become.
6. a kind of control device of air-conditioning, which is characterized in that air-conditioning includes the indoor unit with First Heat Exchanger, has second to change
The outdoor unit of hot device, compressor and gas-liquid separator, the air entry phase of the gas outlet of the gas-liquid separator and the compressor
Connection, is equipped with electrical control member in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline and the
Two pipelines are connected, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, and the cooling component has shwoot
Device, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation is connected to first pipe
On the road, the radiator is connected to respectively by cooling line with the air inlet of the gas-liquid separator, the flash evaporation, and described the
One throttling set is arranged on the cooling line between the gas-liquid separator and the radiator, and the air-conditioning, which has, to be set
The second throttling device on the first pipeline that is placed between second heat exchanger and the flash evaporation and it is set to described
The third throttling set on the first pipeline between one heat exchanger and the flash evaporation, the air-conditioning are provided with described for detecting
The first sensor of the evaporating pressure of First Heat Exchanger or condensing pressure, the evaporating pressure for detecting second heat exchanger or
The second sensor of condensing pressure, the 3rd sensor of outlet pressure for detecting the first throttling device, for detecting
4th sensor of the fluid pressure of the second throttling device, and pressure of inspiration(Pi) and exhaust for detecting the compressor
5th sensor of pressure；
The control device includes:
Acquiring unit, for obtaining the target fluid pressure of second throttling device；And the target of acquisition first throttling device goes out
Atmospheric pressure, the target outlet pressure are the pressure for the refrigerant that first throttling device inputs gas-liquid separator；
Main control unit makes initial fluid pressure for adjusting the flow aperture of the second throttling device and third throttling set
Reach the target fluid pressure；And
The flow aperture for adjusting the first throttling device makes initial outlet pressure reach the target outlet pressure.
7. control device according to claim 6, which is characterized in that the acquiring unit is used for: obtaining air-conditioning and detected
Obtained evaporating pressure and condensing pressure；
According to the evaporating pressure and the condensing pressure, target fluid pressure is determined；
The calculation formula of the target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor the target fluid pressure, PeFor the evaporating pressure, PcFor the condensing pressure.
8. control device according to claim 7, which is characterized in that the main control unit is used for:
When the initial fluid pressure is greater than the target fluid pressure, the second throttling device is controlled with the first aperture speed
Rate improves its flow aperture, and controls the third throttling set and reduce its flow aperture with the first aperture rate, make it is described just
Beginning fluid pressure reaches the target fluid pressure；And
When the initial fluid pressure is less than the target fluid pressure, the second throttling device is controlled with the first aperture speed
Rate reduces its flow aperture, and controls the third throttling set and improve its flow aperture with the first aperture rate, makes described first
Beginning fluid pressure reaches the target fluid pressure；And
When the initial fluid pressure is equal to the target fluid pressure, the first throttling device, the second throttling dress are maintained
It sets constant with the flow aperture of third throttling set.
9. control device according to claim 6, which is characterized in that the acquiring unit is used for:
Obtain the pressure of inspiration(Pi) and pressure at expulsion of the compressor that air-conditioning detects；
According to the pressure of inspiration(Pi) and the pressure at expulsion, the target outlet pressure of the first throttling device is determined；
The calculation formula of the target outlet pressure are as follows:
Wherein, PTarget outletFor the target outlet pressure, PsFor the pressure of inspiration(Pi), PtFor the pressure at expulsion.
10. control device according to claim 9, which is characterized in that the main control unit is used for:
When the initial outlet pressure is greater than the target outlet pressure, the first throttling device is controlled with the second aperture speed
Rate improves its flow aperture, and the initial outlet pressure is made to reach the target outlet pressure；And
When the initial outlet pressure is less than the target outlet pressure, the first throttling device is controlled with the second aperture speed
Rate reduces its flow aperture, and the initial outlet pressure is made to reach the target outlet pressure；And
When the initial outlet pressure is equal to the target outlet pressure, the flow aperture of the first throttling device is maintained not
Become.
11. a kind of air-conditioning, which is characterized in that the air-conditioning include the indoor unit with First Heat Exchanger, have the second heat exchanger,
The outdoor unit of compressor and gas-liquid separator, the gas outlet of the gas-liquid separator are connected with the air entry of the compressor,
The electrical control member is located in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline and the
Two pipelines are connected, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, and the cooling component has shwoot
Device, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation is connected to first pipe
On the road, the radiator is connected to respectively by cooling line with the air inlet of the gas-liquid separator, the flash evaporation, and described the
One throttling set is arranged on the cooling line between the gas-liquid separator and the radiator, and the air-conditioning, which has, to be set
The second throttling device on the first pipeline that is placed between second heat exchanger and the flash evaporation and it is set to described
The third throttling set on the first pipeline between one heat exchanger and the flash evaporation, the air-conditioning are provided with described for detecting
The first sensor of the evaporating pressure of First Heat Exchanger or condensing pressure, the evaporating pressure for detecting second heat exchanger or
The second sensor of condensing pressure, the 3rd sensor of outlet pressure for detecting the first throttling device, for detecting
4th sensor of the fluid pressure of the second throttling device, and pressure of inspiration(Pi) and exhaust for detecting the compressor
5th sensor of pressure；The air-conditioning further includes such as the described in any item control devices of claim 6 to 10.
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| CN201710064205.XA CN106871343B (en) | 2017-02-04 | 2017-02-04 | A kind of control method of air-conditioning, device and air-conditioning |
| PCT/CN2017/092933 WO2018141150A1 (en) | 2017-02-04 | 2017-07-14 | Control method and device for air conditioner, and air conditioner |
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| CN107476971B (en) * | 2017-08-14 | 2023-06-06 | 天津大学 | Scroll compressor and heat pump system with air supplementing and middle exhaust functions |
| WO2019206541A1 (en) * | 2018-04-24 | 2019-10-31 | Belimo Holding Ag | Flow control device for an hvac fluid transportation system |
| CN108870689B (en) * | 2018-07-17 | 2020-01-07 | 珠海格力电器股份有限公司 | Pressure control method and system of air conditioning unit |
| CN112302901B (en) * | 2020-11-10 | 2024-09-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Multistage compression structure, control method and multistage compressor |
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