CN106871344B - 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 PDF

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Publication number
CN106871344B
CN106871344B CN201710064211.5A CN201710064211A CN106871344B CN 106871344 B CN106871344 B CN 106871344B CN 201710064211 A CN201710064211 A CN 201710064211A CN 106871344 B CN106871344 B CN 106871344B
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Prior art keywords
aperture
fluid pressure
flow aperture
flow
throttling
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CN106871344A (en
Inventor
罗荣邦
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Priority to CN201710064211.5A priority Critical patent/CN106871344B/en
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Priority to PCT/CN2017/092935 priority patent/WO2018141151A1/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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 and initial fluid pressure for obtaining second throttling device, and target fluid pressure includes the fluid pressure for flowing back to the refrigerant second throttling device corresponding when meeting superfeed pressure requirement of compressor；Detect outdoor environment temperature and radiator temperature；According to outdoor environment temperature and radiator temperature, first throttling device, the flow aperture of second throttling device and third throttling set are adjusted, initial fluid pressure is made to reach target fluid pressure.Control method of the invention is exchanged heat by control electric control element with the gaseous coolant for flowing through radiator, to realize that the heat exchange to electric control element cools down, the flow aperture of throttling set can also be adjusted according to preset tonifying Qi temperature simultaneously, to make the part refrigerant after heat exchange can satisfy the pressure requirements of compressor Gas-supplying enthalpy-increasing, the performance of air-conditioning entirety is improved.

Description

A kind of control method of air-conditioning, device and air-conditioning
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, when air-conditioning is run in the excessively high situation of summer outdoor temperature, warp The enthalpy of refrigerant after compressor compresses 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 reduce, it is therefore desirable to compressor carry out Gas-supplying enthalpy-increasing operation；And existing Gas-supplying enthalpy-increasing is used room Refrigerant after exchanging heat in outer machine condenser is directly filled with the mode in compressor, and refrigerant temperature tends not to reach optimal benefit Gas increasing enthalpy pressure requirements.
Summary of the invention
The embodiment of the invention provides a kind of control method of air-conditioning, device and air-conditionings.For the embodiment to disclosure Some aspects have a basic understanding, and simple summary is shown below.The summarized section is not extensive overview, nor wanting It determines key/critical component or describes the protection scope of these embodiments.Its sole purpose is presented with simple form Some concepts, 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 and initial fluid pressure, target fluid pressure includes flowing back to the refrigerant of compressor to want meeting superfeed pressure The fluid pressure of corresponding second throttling device when asking；Detect outdoor environment temperature and radiator temperature；According to outdoor environment Temperature and radiator temperature adjust first throttling device, the flow aperture of second throttling device and third throttling set, make initial Fluid pressure reaches target fluid pressure.
Further, the target fluid pressure of second throttling device is obtained, comprising: detect evaporating pressure and the condensation of air-conditioning Pressure；According to evaporating pressure and condensing pressure, target fluid pressure is determined；The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PoFor evaporating pressure, PkFor condensing pressure.
Further, control method further include: in operation of air conditioner refrigeration mode, according to outdoor environment temperature and radiator Temperature adjusts first throttling device, the flow aperture of second throttling device and third throttling set, reaches initial fluid pressure Target fluid pressure, comprising: in 0≤△ t < T1, control first throttling device and adjusted with the first aperture rate from initial opening Second flow aperture is adjusted to from initial opening with the second aperture rate to first flow aperture, third throttling set, and is adjusted The flow aperture of second throttling device, makes initial fluid pressure reach target fluid pressure；In T1≤△ t < T2, control the One throttling set is adjusted to third flow aperture, third throttling set from initial opening with the first aperture rate with the second aperture speed Rate is adjusted to the 4th flow aperture from initial opening, and adjusts the flow aperture of second throttling device, reaches initial fluid pressure To target fluid pressure；In T2≤△ t, first throttling device is controlled with the first aperture rate and is adjusted to the 5th from initial opening Flow aperture, third throttling set are adjusted to the 6th flow aperture from initial opening with the second aperture rate, and adjust the second section The flow aperture for flowing device, makes initial fluid pressure reach target fluid pressure；Wherein, △ t is outdoor environment temperature and heat dissipation The temperature difference of device temperature, first aperture rate < the second aperture rate, first flow aperture < second flow aperture, third flow The 4th flow aperture of aperture <, the 6th flow aperture of the 5th flow aperture <, first flow aperture < third flow aperture < Five flow apertures, the 6th flow aperture of the 4th flow aperture < of second flow aperture <.
Further, control method further include: obtain the target indoor temperature and initial room temperature that user inputs；In room When outer temperature is without departing from preset outdoor temperature threshold value, control progressively closes off first throttling device, and root with third aperture rate The flow aperture that second throttling device and third throttling set are adjusted according to target indoor temperature, makes initial room temperature reach target Room temperature.
Further, control method further include: in operation of air conditioner heating mode, according to outdoor environment temperature and radiator Temperature adjusts first throttling device, the flow aperture of second throttling device and third throttling set, reaches initial fluid pressure Target fluid pressure, comprising: in Tao < t1, control maintain first throttling device flow aperture is constant, second throttling device It is adjusted to the 7th flow aperture from initial opening with third aperture rate, and adjusts the flow aperture of third throttling set, is made just Beginning fluid pressure reaches target fluid pressure；In t1≤Tao < t2, first throttling device is controlled with the 4th aperture rate from first Beginning aperture regulation is adjusted to the 9th flow from initial opening with third aperture rate to the 8th flow aperture, second throttling device and opens Degree, and the flow aperture of third throttling set is adjusted, so that initial fluid pressure is reached target fluid pressure；In t3≤Tao, control First throttling device processed is with the 4th aperture rate from initial opening is adjusted to the tenth flow aperture, second throttling device is opened with third It spends rate and is adjusted to the 11st flow aperture from initial opening, and adjust the flow aperture of third throttling set, make initially to go out liquid Pressure reaches target fluid pressure；Wherein, Tao is outdoor environment temperature, and the 4th aperture rate < third aperture rate is initially opened Degree the 7th flow aperture of >, the 9th flow aperture of the 8th flow aperture >, the 11st flow aperture of the tenth flow aperture >, the 8th The tenth flow aperture < initial opening of flow aperture <, the 11st flow aperture of the 7th the 9th flow aperture < of amount aperture <.
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 The target fluid pressure and initial fluid pressure of second throttling device are obtained, target fluid pressure includes the refrigerant for flowing back to compressor The fluid pressure of corresponding second throttling device when meeting superfeed pressure requirement；And the outdoor ring that air-conditioning detects Border temperature and radiator temperature；Main control unit, for adjusting first throttle dress according to outdoor environment temperature and radiator temperature It sets, the flow aperture of second throttling device and third throttling set, initial fluid pressure is made to reach target fluid pressure.
Further, acquiring unit is used for: obtaining evaporating pressure and condensing pressure that air-conditioning detects；According to evaporation Pressure and condensing pressure determine target fluid pressure；The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PoFor evaporating pressure, PkFor condensing pressure.
Further, main control unit is used for: in 0≤△ t < T1, control first throttling device with the first aperture rate from Initial opening is adjusted to first flow aperture, third throttling set and is adjusted to second flow from initial opening with the second aperture rate Aperture, and the flow aperture of second throttling device is adjusted, so that initial fluid pressure is reached target fluid pressure；In T1≤△ t < When T2, first throttling device is controlled with the first aperture rate and is adjusted to third flow aperture, third throttling set from initial opening It is adjusted to the 4th flow aperture from initial opening with the second aperture rate, and adjusts the flow aperture of second throttling device, is made just Beginning fluid pressure reaches target fluid pressure；In T2≤△ t, first throttling device is controlled with the first aperture rate from initially opening Degree is adjusted to the 5th flow aperture, third throttling set and is adjusted to the 6th flow aperture from initial opening with the second aperture rate, And the flow aperture of second throttling device is adjusted, so that initial fluid pressure is reached target fluid pressure；Wherein, △ t is outdoor ring The temperature difference of border temperature and radiator temperature, first aperture rate < the second aperture rate, first flow aperture < second flow Aperture, the 4th flow aperture of third flow aperture <, the 6th flow aperture of the 5th flow aperture <, first flow aperture < third The 5th flow aperture of flow aperture <, the 6th flow aperture of the 4th flow aperture < of second flow aperture <.
Further, acquiring unit is used to obtain the target indoor temperature and initial room temperature that user inputs；Master control list Member is for when outdoor temperature is without departing from preset outdoor temperature threshold value, control to progressively close off first throttle with third aperture rate Device, and according to the flow aperture of target indoor temperature adjusting second throttling device and third throttling set, so that initial indoor Temperature reaches target indoor temperature.
Further, main control unit is used for: in Tao < t1, control maintain first throttling device flow aperture it is constant, Second throttling device is adjusted to the 7th flow aperture from initial opening with third aperture rate, and adjusts the stream of third throttling set Aperture is measured, initial fluid pressure is made to reach target fluid pressure；In t1≤Tao < t2, first throttling device is controlled with the 4th Aperture rate is adjusted to the 8th flow aperture, second throttling device from initial opening and is adjusted with third aperture rate from initial opening To the 9th flow aperture, and the flow aperture of third throttling set is adjusted, initial fluid pressure is made to reach target fluid pressure；? When t3≤Tao, first throttling device is controlled with the 4th aperture rate and is adjusted to the tenth flow aperture, the second throttling from initial opening Device is adjusted to the 11st flow aperture from initial opening with third aperture rate, and the flow for adjusting third throttling set is opened Degree, makes initial fluid pressure reach target fluid pressure；Wherein, Tao is outdoor environment temperature, and the 4th aperture rate < third is opened Spend rate, the 7th flow aperture of initial opening >, the 9th flow aperture of the 8th flow aperture >, the tenth flow aperture > the 11st Flow aperture, the tenth flow aperture < initial opening of the 8th flow aperture <, the 9th flow aperture < the tenth of the 7th amount aperture < One flow aperture.
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 and compressor, electrical control member are located outside in machine, First Heat Exchanger, the second heat exchanger and Compressor is connected by the first pipeline and the second pipeline, and for constituting refrigerant circulation circuit, air-conditioning further includes cooling component, cold But component has flash evaporation, first throttling device and the radiator for radiating for electrical control member, wherein flash evaporation is connected to first On pipeline, radiator is connected to the gas supplementing opening of compressor, flash evaporation respectively by cooling line, and first throttling device setting is being pressed On cooling line between contracting machine and flash evaporation, air-conditioning, which has, to be set on the first pipeline between the second heat exchanger and flash evaporation Second throttling device and the first pipeline for being set between First Heat Exchanger and flash evaporation on third throttling set, it is empty It adjusts and is provided with the first sensor of evaporating pressure or condensing pressure for detecting First Heat Exchanger, for detecting second sensor Evaporating pressure or the second sensor of condensing pressure, the 3rd sensor of fluid pressure for detecting second throttling device, For detecting the 4th sensor of outdoor environment temperature, the 5th sensor for detecting radiator temperature and for detecting 6th sensor of indoor environment temperature.
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 temperature requirement 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 flow chart 3 of control method of the present invention；
Fig. 4 is the overall structure diagram of air-conditioning of the present invention；
Fig. 5 is the pressure-enthalpy chart of refrigerant circulation in air-conditioning of the present invention；
Fig. 6 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 shown in Figure 1, the present invention provides a kind of control method of air-conditioning, the key step of control method includes:
S101, the target fluid pressure and initial fluid pressure for obtaining second throttling device, target fluid pressure include stream Return the fluid pressure of the refrigerant second throttling device corresponding when meeting superfeed pressure requirement of compressor；
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 third of the liquid outlet position of second throttling device Sensor detects to obtain；
S102, detection outdoor environment temperature and radiator temperature；In embodiment, outdoor environment temperature is by being set to outdoor The 4th sensor on machine detects to obtain, and radiator temperature is detected by being set to the 5th sensor of heatsink fins on piece It arrives；
S103, according to outdoor environment temperature and radiator temperature, adjust first throttling device, second throttling device and third The flow aperture of throttling set, makes initial fluid pressure reach target fluid pressure.In embodiment, in cooling in summer mode situation Under, control method of the present invention determines three sections according to the temperature range where the difference of outdoor environment temperature and radiator temperature Flow the flow aperture regulation mode of device；And in winter in the case of heating mode, control method of the present invention is according to outdoor environment temperature Temperature range where spending, determines the flow aperture regulation mode of three throttling sets；Under above two operational mode, by right The aperture regulation of three throttling sets, it is adjustable difference refrigerant pipelines in cold medium flux so that second throttling device just When reaching target fluid pressure, the refrigerant filled into compressor via cooling line is also able to satisfy to compressor beginning fluid pressure The pressure requirements of Gas-supplying enthalpy-increasing, and then improve the compression efficiency of compressor.
In some embodiments of the invention, the step of 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, target fluid pressure, the calculation formula of target fluid pressure are determined are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PoFor evaporating pressure, PkFor 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, as shown in Fig. 2, in operation of air conditioner refrigeration mode, according to outdoor environment temperature Degree and radiator temperature adjust first throttling device, the flow aperture of second throttling device and third throttling set, so that initially Fluid pressure reaches target fluid pressure, and key step includes:
In 0≤△ t < T1, first throttling device is controlled with the first aperture rate and is adjusted to first flow from initial opening Aperture, third throttling set are adjusted to second flow aperture from initial opening with the second aperture rate, and adjust the second throttling dress The flow aperture set, until initial fluid pressure reaches target fluid pressure；For example, in one embodiment, three throttling dresses The aperture regulation range set is 0~500B, and the initial opening of three is 220~240B, and T1 is set as 3 DEG C, at 3 DEG C of 0≤△ t < When, first throttling device, which is controlled, with the aperture rate of 5B/s is adjusted to first flow aperture 50B, third throttling dress from initial opening It sets and second flow 120~140B of aperture is adjusted to from initial opening with the aperture rate of 10B/s, in first throttling device and second After throttling set reaches corresponding flow aperture, the flow aperture of second throttling device is adjusted, so that second throttling device is first Beginning fluid pressure reaches target fluid pressure；
In T1≤△ t < T2, first throttling device is controlled with the first aperture rate and is adjusted to third stream from initial opening Amount aperture, third throttling set are adjusted to the 4th flow aperture from initial opening with the second aperture rate, and adjust the second throttling The flow aperture of device, until initial fluid pressure reaches target fluid pressure；For example, in one embodiment, three throttlings The aperture regulation range of device is 0~500B, and the initial opening of three is 220~240B, and T1 is set as 3 DEG C, and T2 is set as 6 DEG C, at 6 DEG C of 3 DEG C≤△ t <, first throttling device is controlled with the aperture rate of 5B/s and is adjusted to third flow from initial opening 80~100B of aperture, third throttling set with the aperture rate of 10B/s from initial opening be adjusted to the 4th flow aperture 160~ 180B adjusts the flow of second throttling device after first throttling device and second throttling device reach corresponding flow aperture Aperture, so that the initial fluid pressure of second throttling device reaches target fluid pressure；
In T2≤△ t, control first throttling device is adjusted to the 5th flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to the 6th flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, until initial fluid pressure reaches target fluid pressure；For example, in one embodiment, three throttling sets Aperture regulation range be 0~500B, the initial opening of three is 220~240B, and T2 is set as 6 DEG C, in 6 DEG C≤△ t, control First throttling device processed is adjusted to the 5th 100~120B of flow aperture, third throttling from initial opening with the aperture rate of 5B/s Device is adjusted to the 6th flow 200~220B of aperture from initial opening with the aperture rate of 10B/s, in first throttling device and After two throttling sets reach corresponding flow aperture, the flow aperture of second throttling device is adjusted, so that second throttling device Initial fluid pressure reaches target fluid pressure；
In above-described embodiment, △ t is the temperature difference of outdoor environment temperature and radiator temperature, the first aperture rate < second Aperture rate, first flow aperture < second flow aperture, the 4th flow aperture of third flow aperture <, the 5th flow aperture < 6th flow aperture, the 5th flow aperture of first flow aperture < third flow aperture <, the 4th flow of second flow aperture < The 6th flow aperture of aperture <.
In some embodiments of the invention, the step of control method further include:
Obtain the target indoor temperature and initial room temperature that user inputs；In embodiment, target indoor temperature is user By indoor heat-exchange temperature set by remote controler or display panel, initial room temperature then can be by being set to indoor unit On the 6th sensor detect to obtain；
Judge whether outdoor temperature exceeds preset outdoor temperature threshold value；Outdoor temperature threshold value can be pre-programmed into air-conditioning In the program of core, in one embodiment, outdoor temperature threshold value is set as 35 DEG C of Ei；
When outdoor temperature is without departing from preset outdoor temperature threshold value, control progressively closes off first segment with third aperture rate Device is flowed, and adjusts the flow aperture of second throttling device and third throttling set according to target indoor temperature, so that initial room Interior temperature reaches target indoor temperature.For example, in one embodiment, the aperture regulation range of three throttling sets is 0~ 500B, the initial opening of three is 220~240B, when outdoor environment temperature is without departing from 35 DEG C of outdoor temperature threshold value, control the One throttling set is progressively closed off with the aperture rate of 10B/s, until aperture becomes 0；In addition, adjusting the according to target indoor temperature The flow aperture of two throttling sets and third throttling set, to flow through the refrigerant of the first pipeline after second throttle, into Enter in the First Heat Exchanger of indoor unit and carries out normal cooling heat exchange with indoor environment.
In one embodiment of the invention, as shown in figure 3, in operation of air conditioner heating mode, according to outdoor environment temperature Degree and radiator temperature adjust first throttling device, the flow aperture of second throttling device and third throttling set, so that initially Fluid pressure reaches target fluid pressure, and specific steps include:
In Tao < t1, control maintain first throttling device flow aperture is constant, second throttling device is with third aperture Rate is adjusted to the 7th flow aperture from initial opening, and adjusts the flow aperture of third throttling set, until initially hydraulic out Power reaches target fluid pressure；For example, in one embodiment, the aperture regulation range of three throttling sets is 0~500B, three The initial opening of person is 220~240B, and t1 is set as 0 DEG C, at 0 DEG C of Tao <, maintains the initial opening of first throttling device not Become, controls second throttling device with the aperture rate of 10B/s and be adjusted to the 7th flow 100~120B of aperture from initial opening, After second throttling device reaches corresponding flow aperture, the flow aperture of third throttling set is adjusted, so that second throttling device Initial fluid pressure reach target fluid pressure；
In t1≤Tao < t2, first throttling device is controlled with the 4th aperture rate and is adjusted to the 8th stream from initial opening Amount aperture, second throttling device are adjusted to the 9th flow aperture from initial opening with third aperture rate, and adjust third throttling The flow aperture of device, until initial fluid pressure reaches target fluid pressure；For example, in one embodiment, three throttlings The aperture regulation range of device is 0~500B, and the initial opening of three is 220~240B, and t1 is set as 0 DEG C, and t2 is 5 DEG C, 0 DEG C≤5 DEG C of Tao < when, control first throttling device and the 8th flow aperture be adjusted to from initial opening with the aperture rate of 5B/s 160~180B, second throttling device are adjusted to the 9th flow 120~140B of aperture from initial opening with the aperture rate of 10B/s, After first throttling device and second throttling device reach corresponding flow aperture, the flow aperture of third throttling set is adjusted, So that the initial fluid pressure of second throttling device reaches target fluid pressure；
In t3≤Tao, control first throttling device is adjusted to the tenth flow from initial opening with the 4th aperture rate and opens Degree, second throttling device are adjusted to the 11st flow aperture from initial opening with third aperture rate, and adjust third throttling dress The flow aperture set, until initial fluid pressure reaches target fluid pressure；For example, in one embodiment, three throttling dresses The aperture regulation range set is 0~500B, and the initial opening of three is 220~240B, and t2 is 5 DEG C, in 5 DEG C≤Tao, control First throttling device is adjusted to the 8th 180~200B of flow aperture, the second throttling dress from initial opening with the aperture rate of 5B/s It sets and the 9th flow 140~160B of aperture is adjusted to from initial opening with the aperture rate of 10B/s, in first throttling device and second After throttling set reaches corresponding flow aperture, the flow aperture of third throttling set is adjusted, so that second throttling device is first Beginning fluid pressure reaches target fluid pressure；
In above-described embodiment, Tao is outdoor environment temperature, the 4th aperture rate < third aperture rate, initial opening > 7th flow aperture, the 9th flow aperture of the 8th flow aperture >, the 11st flow aperture of the tenth flow aperture >, the 8th flow The tenth flow aperture < initial opening of aperture <, the 11st flow aperture of the 7th the 9th flow aperture < of amount aperture <.
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, target fluid pressure and initial fluid pressure, target for obtaining second throttling device go out liquid Pressure includes the fluid pressure for flowing back to the refrigerant second throttling device corresponding when meeting superfeed pressure requirement of compressor；With And outdoor environment temperature and radiator temperature that air-conditioning detects；
Main control unit, for adjusting first throttling device, the second throttling dress according to outdoor environment temperature and radiator temperature The flow aperture with third throttling set is set, so that initial fluid pressure reaches target fluid pressure.
In some embodiments of the invention, acquiring unit is used for: obtaining the evaporating pressure that detects of air-conditioning and cold Solidifying pressure；According to evaporating pressure and condensing pressure, target fluid pressure is determined；The calculation formula of target fluid pressure are as follows:
Wherein, PTarget goes out liquidFor target fluid pressure, PoFor evaporating pressure, PkFor condensing pressure.
In some embodiments of the invention, main control unit is used for: in 0≤△ t < T1, control first throttling device with First aperture rate is adjusted to first flow aperture, third throttling set from initial opening with the second aperture rate from initial opening It is adjusted to second flow aperture, and adjusts the flow aperture of second throttling device, until initial fluid pressure reaches target and goes out liquid Pressure；In T1≤△ t < T2, control first throttling device is adjusted to third flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to the 4th flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, until initial fluid pressure reaches target fluid pressure；In T2≤△ t, first throttling device is controlled with the One aperture rate is adjusted to the 5th flow aperture, third throttling set from initial opening with the second aperture rate from initial opening tune Section adjusts the flow aperture of second throttling device to the 6th flow aperture, until to reach target hydraulic out for initial fluid pressure Power；Wherein, temperature difference of the △ t for outdoor environment temperature and radiator temperature, first aperture rate < the second aperture rate, first Flow aperture < second flow aperture, the 4th flow aperture of third flow aperture <, the 6th flow aperture of the 5th flow aperture <, The 5th flow aperture of first flow aperture < third flow aperture <, the 6th flow of the 4th flow aperture < of second flow aperture < Aperture.
In some embodiments of the invention, acquiring unit is used to obtain the target indoor temperature and initial room that user inputs Interior temperature；Main control unit is for judging whether outdoor temperature exceeds preset outdoor temperature threshold value；And do not surpass in outdoor temperature Out when preset outdoor temperature threshold value, control progressively closes off first throttling device with third aperture rate, and according in target chamber Temperature adjusts the flow aperture of second throttling device and third throttling set, so that initial room temperature reaches target Indoor Temperature Degree.
In some embodiments of the invention, main control unit is used for: in Tao < t1, control maintains first throttling device Flow aperture is constant, second throttling device with third aperture rate is adjusted to the 7th flow aperture from initial opening, and adjust The flow aperture of third throttling set, until initial fluid pressure reaches target fluid pressure；In t1≤Tao < t2, control First throttling device is adjusted to the 8th flow aperture, second throttling device from initial opening with the 4th aperture rate with third aperture Rate is adjusted to the 9th flow aperture from initial opening, and adjusts the flow aperture of third throttling set, until initially hydraulic out Power reaches target fluid pressure；In t3≤Tao, control first throttling device is adjusted to the 4th aperture rate from initial opening Tenth flow aperture, second throttling device are adjusted to the 11st flow aperture from initial opening with third aperture rate, and adjust The flow aperture of third throttling set, until initial fluid pressure reaches target fluid pressure；Wherein, Tao is outdoor environment temperature Degree, the 4th aperture rate < third aperture rate, the 7th flow aperture of initial opening >, the 9th flow of the 8th flow aperture > are opened Degree, the 11st flow aperture of the tenth flow aperture >, the tenth flow aperture < initial opening of the 8th flow aperture <, the 7th amount are opened Spend the 11st flow aperture of the 9th flow aperture < of <.
Air conditioner structure applied by control method and control device in above-described embodiment is as shown in figure 4, the air-conditioning includes Indoor unit and outdoor unit, wherein indoor unit includes the First Heat Exchanger 1 to exchange heat with indoor environment, and outdoor unit includes and room The second heat exchanger 2 that external environment exchanges heat, for providing the compressor 3 of circulation power, the electricity such as computer board, single-chip microcontroller for refrigerant Control is set in outdoor unit, and First Heat Exchanger 1, the second heat exchanger 2 and compressor 3 pass through 5 phase of the first pipeline 4 and the second pipeline Connection, for constituting conventional refrigerant circulation circuit, in embodiment, air-conditioning is in summer operation refrigeration mode, with outdoor environment Refrigerant after heat exchange is flowed out out of second heat exchanger 2, flows into First Heat Exchanger 1 via the first pipeline 4, meanwhile, with indoor ring Refrigerant after the heat exchange of border is flowed out from First Heat Exchanger 1, is flowed into the second heat exchanger 2 via the second pipeline 5, is passed through the refrigerant circulation Process, it can be achieved that air-conditioning to the refrigeration cool-down function of indoor environment.Similarly, when running heating mode in winter, refrigerant is first It is flowed between heat exchanger 1 and the second heat exchanger 2 along the direction opposite with refrigeration mode.Heating of the air-conditioning to indoor environment can be achieved Heat up function.
In addition to above-mentioned conventional refrigerant circulation circuit, air-conditioning of the invention further includes cooling tube group, for solving electrical control member Temperature excessively high problem when work.
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 → compressor of → radiator 3, first throttling device 801 can according to need be arranged in it is cold between flash evaporation 6 and compressor 3 But on pipeline 9.
It is mostly that directly the refrigerant in refrigerant pipeline is delivered in compressor 3 in the Gas-supplying enthalpy-increasing structure of conventional air-conditioning, this During one, the parameters such as temperature and pressure of refrigerant do not have too big variation, and in air-conditioning of the invention, flow through radiator 7 Gaseous coolant temperature increase, pressure increase, therefore reduce the subsequent compression efficiency to refrigerant of compressor 3, to solve this Problem, in one embodiment of the invention, air-conditioning further include second throttling device 802 and third throttling set 803, wherein Second throttling device 802 is set on the first pipeline 4 between the second heat exchanger 2 and flash evaporation 6, and third throttling set 803 is set It is placed on the first pipeline 4 between First Heat Exchanger 1 and flash evaporation 6, compared to the air conditioner structure of conventional Gas-supplying enthalpy-increasing, air-conditioning is set The advantages of setting second throttling device 802 and third throttling set 803 is: by taking operation of air conditioner refrigeration mode as an example, liquid refrigerants Before flowing into flash evaporation 6 by the second heat exchanger 2 of outdoor unit, the second section between the second heat exchanger 2 and flash evaporation 6 is set Stream device 802 can one step ahead throttle to refrigerant, reduce the pressure of refrigerant, be evaporated to liquid refrigerants convenient for flash evaporation 6 Gaseous coolant, simultaneously as the temperature of refrigerant is lower, so can also increase heat exchange amount of the refrigerant at radiator 7, in this hair In a bright embodiment, by adjusting the aperture of first throttling device 801 and second throttling device 802, so as to adjust refrigerant Flow in cooling line 9 can make the temperature and pressure that the refrigerant of compressor 3 is flowed to from first throttling device 801, than from The temperature and pressure for the refrigerant that second heat exchanger 2 flows to second throttling device 802 is 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, to guarantee system when operation of air conditioner heating mode Heat also needs to execute compressor 3 Gas-supplying enthalpy-increasing operation, and in operation of air conditioner heating mode, refrigerant is in air-conditioning duct In flow direction and refrigeration mode on the contrary, at this point, the third throttling set 803 being arranged between First Heat Exchanger 1 and flash evaporation 6 can To play throttling action of the second throttling device 802 under cooling condition, the temperature for flowing into the refrigerant of flash evaporation 6 is adjusted one step ahead And pressure and other parameters, and second throttling device 802 then plays the role of ending expansion valve, for adjusting from the outflow of flash evaporation 6, stream Enter the parameters such as the temperature and pressure of refrigerant of the second heat exchanger 2 of outdoor unit.Refrigerant to realize under above two operating condition is adjusted Process, second throttling device 802 of the present invention and third throttling set 803 are bidirectional throttling device.
The outdoor unit of air-conditioning further include for store and to compressor 3 convey refrigerant gas-liquid separator 10, compressor 3 to Include less one stage of compression portion and secondary compressing portion, is connected with mixing unit between one stage of compression portion and secondary compressing portion, wherein level-one The refrigerant that compression unit is used to flow into gas-liquid separator 10 carries out one stage of compression, and mixing unit is flowed into for combination cooling pipeline 9 Refrigerant and by one stage of compression refrigerant, secondary compressing portion be used for mixing refrigerant carry out two-stage compression, make compressor 3 export Refrigerant can satisfy the second heat exchanger of outdoor unit 2 and externally exchange heat required temperature and pressure.
Meanwhile the gas returning port of compressor 3 include be connected to one stage of compression portion and gas-liquid separator 10 the first gas returning port and It is connected to the second gas returning port of mixing unit and radiator 7, so that the refrigerant in different refrigerant flow lines flows into corresponding compressor 3 In internal structure.
Optionally, compressor 3 of the invention uses existing compensating compressor 3, and mixing unit is second vapor injection compression The second vapor injection chamber of machine 3, the second gas returning port are the gas supplementing opening of compensating compressor 3.
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 that is connected with second gas outlet in gaseous coolant portion, with compressor 3 The outlet end that second gas returning port 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 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 is provided with the first sensor for detecting room temperature, Ke Yigen The aperture of first throttling device 801 and second throttling device 802 is adjusted, according to detected room temperature to meet to indoor ring The coolant quantity demand that border exchanges heat.
As shown in Figure 5 and Figure 6, in a chiller mode, refrigerant is in the Air-conditioning Cycle flow process, enthalpy and entropy Change procedure are as follows: the refrigerant in state point A from the first gas returning port flow into compressor 3, be compressed to shape in one stage of compression portion Mixing unit is flowed into after state point B, meanwhile, the refrigerant in cooling line 9 is in state point after 801 isenthalpic throttling of first throttling device K is flowed into the mixing unit of compressor 3 by the second gas returning port of compressor 3, becomes being in after mixing with the refrigerant in state point B The secondary compressing portion of the refrigerant of state point C, compressor 3 continues two-stage compression to refrigerant, is in state by isentropic Compression The refrigerant of point D；Refrigerant in state point D is inputted the second heat exchanger 2 by compressor 3, is cooled to liquid point E by outdoor environment； Refrigerant enters the first pipeline 4 along the outlet of the second heat exchanger 2, by 802 isenthalpic throttling of second throttling device to state point F, after And flow into flash evaporation 6；The refrigerant flowed out from the liquid outlet in the liquid refrigerants portion of flash evaporation 6 is in state point G, through third stream device Throttling becomes state point L after carrying out heat absorption evaporation into First Heat Exchanger 1, is then returned by the second pipeline 5 to state point I To gas-liquid separator 10；Meanwhile it being in state point H from second gas outlet in the gaseous coolant portion of flash evaporation 6 outflow gaseous coolant, Become state point J after flowing through parallel-flow heat exchanger, exchanging heat with electrical control member, refrigerant is carried out by first throttling device 801 later Decompression cooling becomes state point K, flows into the mixing unit of compressor 3 by the second gas returning port of compressor 3 again.
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 K from state point J, 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 second sensor or condensing pressure, for detecting the It is the 3rd sensor of the fluid pressure of two throttling sets, the 4th sensor for detecting outdoor environment temperature, scattered for detecting 5th sensor of hot device temperature and the 6th sensor for detecting indoor environment temperature, can be according to detected Associated temperature and pressure parameter adjust first throttling device 801, second throttling device 802 and third throttling set 803, so that empty It adjusts in the case where not influencing indoor heat exchange efficiency, increases or decreases the cold medium flux for radiating to electrical control member.
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 the air-conditioning includes the indoor unit with First Heat Exchanger, has the The outdoor unit of two heat exchangers and compressor, electrical control member are located in the outdoor unit, the First Heat Exchanger, the second heat exchanger and pressure Contracting machine is connected by the first pipeline and the second pipeline, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, The cooling component has flash evaporation, first throttling device and the radiator for radiating for the electrical control member, wherein the sudden strain of a muscle Hair device is connected on first pipeline, the radiator by cooling line respectively with the gas supplementing opening of the compressor, described Flash evaporation connection, the first throttling device are arranged on the cooling line between the compressor and the flash evaporation, The air-conditioning have be set on the first pipeline between second heat exchanger and the flash evaporation second throttling device, with And it is set to the third throttling set on the first pipeline between the First Heat Exchanger and the flash evaporation, the air-conditioning setting There is the first sensor of the evaporating pressure or condensing pressure for detecting the First Heat Exchanger, for detecting second heat exchange The second sensor of the evaporating pressure of device or condensing pressure, the third of fluid pressure for detecting the second throttling device pass Sensor, the 4th sensor for detecting outdoor environment temperature, the 5th sensor for detecting the radiator temperature and For detecting the 6th sensor of indoor environment temperature；
The control method includes:
The target fluid pressure and initial fluid pressure of second throttling device are obtained, the target fluid pressure includes flowing back to compression The fluid pressure of the refrigerant of the machine second throttling device corresponding when meeting superfeed pressure requirement；
Detect outdoor environment temperature and radiator temperature；
According to the outdoor environment temperature and the radiator temperature, first throttling device, second throttling device and third are adjusted The flow aperture of throttling set makes the initial fluid pressure reach the target fluid 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:
Detect 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, PoFor the evaporating pressure, PkFor the condensing pressure.
3. control method according to claim 2, which is characterized in that the control method further include:
In operation of air conditioner refrigeration mode, according to the outdoor environment temperature and the radiator temperature, first throttle dress is adjusted It sets, the flow aperture of second throttling device and third throttling set, so that the initial fluid pressure is reached the target hydraulic out Power, comprising:
In 0≤△ t < T1, control first throttling device is adjusted to first flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to second flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In T1≤△ t < T2, control first throttling device is adjusted to third flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to the 4th flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In T2≤△ t, first throttling device is controlled with the first aperture rate and is adjusted to the 5th flow aperture, the from initial opening Three throttling sets are adjusted to the 6th flow aperture from initial opening with the second aperture rate, and adjust the flow of second throttling device Aperture makes the initial fluid pressure reach the target fluid pressure；
Wherein, △ t is the temperature difference of the outdoor environment temperature and the radiator temperature, first aperture rate the second aperture of < Rate, first flow aperture < second flow aperture, the 4th flow aperture of third flow aperture <, the 5th flow aperture < the 6th Flow aperture, the 5th flow aperture of first flow aperture < third flow aperture <, the 4th flow aperture of second flow aperture < The 6th flow aperture of <.
4. control method according to claim 1, which is characterized in that the control method further include:
Obtain the target indoor temperature and initial room temperature that user inputs；
When outdoor temperature is without departing from preset outdoor temperature threshold value, control progressively closes off the first segment with third aperture rate Device is flowed, and adjusts the flow aperture of second throttling device and third throttling set according to target indoor temperature, is made described initial Room temperature reaches target indoor temperature.
5. control method according to claim 1, feature is being, the control method further include:
In operation of air conditioner heating mode, according to the outdoor environment temperature and the radiator temperature, first throttle dress is adjusted It sets, the flow aperture of second throttling device and third throttling set, so that the initial fluid pressure, which reaches the target, goes out liquid Pressure, comprising:
In Tao < t1, control maintains that the flow aperture of the first throttling device is constant, second throttling device is with third aperture Rate is adjusted to the 7th flow aperture from initial opening, and adjusts the flow aperture of third throttling set, makes the initial liquid out Pressure reaches the target fluid pressure；
In t1≤Tao < t2, control first throttling device is adjusted to the 8th flow from initial opening with the 4th aperture rate and opens Degree, second throttling device are adjusted to the 9th flow aperture from initial opening with third aperture rate, and adjust third throttling set Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In t2≤Tao, first throttling device is controlled with the 4th aperture rate and is adjusted to the tenth flow aperture, the from initial opening Two throttling sets are adjusted to the 11st flow aperture from initial opening with third aperture rate, and adjust the stream of third throttling set Aperture is measured, the initial fluid pressure is made to reach the target fluid pressure；
Wherein, Tao is the outdoor environment temperature, the 4th aperture rate < third aperture rate, the 7th flow of initial opening > Aperture, the 9th flow aperture of the 8th flow aperture >, the 11st flow aperture of the tenth flow aperture >, the 8th flow aperture < Ten flow aperture < initial openings, the 11st flow aperture of the 7th the 9th flow aperture < of amount aperture <.
6. a kind of control device of air-conditioning, which is characterized in that the air-conditioning includes the indoor unit with First Heat Exchanger, has the The outdoor unit of two heat exchangers and compressor, electrical control member are located in the outdoor unit, the First Heat Exchanger, the second heat exchanger and pressure Contracting machine is connected by the first pipeline and the second pipeline, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, The cooling component has flash evaporation, first throttling device and the radiator for radiating for the electrical control member, wherein the sudden strain of a muscle Hair device is connected on first pipeline, the radiator by cooling line respectively with the gas supplementing opening of the compressor, described Flash evaporation connection, the first throttling device are arranged on the cooling line between the compressor and the flash evaporation, The air-conditioning have be set on the first pipeline between second heat exchanger and the flash evaporation second throttling device, with And it is set to the third throttling set on the first pipeline between the First Heat Exchanger and the flash evaporation, the air-conditioning setting There is the first sensor of the evaporating pressure or condensing pressure for detecting the First Heat Exchanger, for detecting second heat exchange The second sensor of the evaporating pressure of device or condensing pressure, the third of fluid pressure for detecting the second throttling device pass Sensor, the 4th sensor for detecting outdoor environment temperature, the 5th sensor for detecting the radiator temperature and For detecting the 6th sensor of indoor environment temperature；
The control device includes:
Acquiring unit, for obtaining the target fluid pressure and initial fluid pressure of second throttling device, the target is hydraulic out Power includes the fluid pressure for flowing back to the refrigerant second throttling device corresponding when meeting superfeed pressure requirement of compressor；And The outdoor environment temperature and radiator temperature that air-conditioning detects；
Main control unit, for adjusting first throttling device, the second section according to the outdoor environment temperature and the radiator temperature The flow aperture for flowing device and third throttling set, makes the initial fluid pressure reach the target fluid pressure.
7. control device according to claim 6, which is characterized in that the acquiring unit is used for:
Obtain evaporating pressure and condensing pressure that air-conditioning detects；
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, PoFor the evaporating pressure, PkFor the condensing pressure.
8. control device according to claim 7, which is characterized in that the main control unit is used for:
In 0≤△ t < T1, control first throttling device is adjusted to first flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to second flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In T1≤△ t < T2, control first throttling device is adjusted to third flow from initial opening with the first aperture rate and opens Degree, third throttling set are adjusted to the 4th flow aperture from initial opening with the second aperture rate, and adjust second throttling device Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In T2≤△ t, first throttling device is controlled with the first aperture rate and is adjusted to the 5th flow aperture, the from initial opening Three throttling sets are adjusted to the 6th flow aperture from initial opening with the second aperture rate, and adjust the flow of second throttling device Aperture makes the initial fluid pressure reach the target fluid pressure；
Wherein, △ t is the temperature difference of the outdoor environment temperature and the radiator temperature, first aperture rate the second aperture of < Rate, first flow aperture < second flow aperture, the 4th flow aperture of third flow aperture <, the 5th flow aperture < the 6th Flow aperture, the 5th flow aperture of first flow aperture < third flow aperture <, the 4th flow aperture of second flow aperture < The 6th flow aperture of <.
9. control device according to claim 6, which is characterized in that
The acquiring unit is used to obtain the target indoor temperature and initial room temperature that user inputs；
The main control unit be used for when outdoor temperature is without departing from preset outdoor temperature threshold value, control with third aperture rate by The first throttling device is gradually closed, and adjusts the flow of second throttling device and third throttling set according to target indoor temperature Aperture makes the initial room temperature reach target indoor temperature.
10. control device according to claim 6, feature is being, the main control unit is used for:
In Tao < t1, control maintains that the flow aperture of the first throttling device is constant, second throttling device is with third aperture Rate is adjusted to the 7th flow aperture from initial opening, and adjusts the flow aperture of third throttling set, makes the initial liquid out Pressure reaches the target fluid pressure；
In t1≤Tao < t2, control first throttling device is adjusted to the 8th flow from initial opening with the 4th aperture rate and opens Degree, second throttling device are adjusted to the 9th flow aperture from initial opening with third aperture rate, and adjust third throttling set Flow aperture, so that the initial fluid pressure is reached the target fluid pressure；
In t2≤Tao, first throttling device is controlled with the 4th aperture rate and is adjusted to the tenth flow aperture, the from initial opening Two throttling sets are adjusted to the 11st flow aperture from initial opening with third aperture rate, and adjust the stream of third throttling set Aperture is measured, the initial fluid pressure is made to reach the target fluid pressure；
Wherein, Tao is the outdoor environment temperature, the 4th aperture rate < third aperture rate, the 7th flow of initial opening > Aperture, the 9th flow aperture of the 8th flow aperture >, the 11st flow aperture of the tenth flow aperture >, the 8th flow aperture < Ten flow aperture < initial openings, the 11st flow aperture of the 7th the 9th flow aperture < of amount aperture <.
11. a kind of air-conditioning, which is characterized in that the air-conditioning includes the indoor unit with First Heat Exchanger, has the second heat exchanger With the outdoor unit of compressor, electrical control member is located in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through First pipeline and the second pipeline are connected, and for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, the cooling Component has flash evaporation, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation connection In on first pipeline, the radiator is connected with the gas supplementing opening of the compressor, the flash evaporation respectively by cooling line Logical, the first throttling device is arranged on the cooling line between the compressor and the flash evaporation, the air-conditioning With the second throttling device on the first pipeline being set between second heat exchanger and the flash evaporation and it is set to The third throttling set on the first pipeline between the First Heat Exchanger and the flash evaporation, the air-conditioning are provided with for examining Survey the evaporating pressure of the First Heat Exchanger or the first sensor of condensing pressure, the evaporation for detecting second heat exchanger Pressure or the second sensor of condensing pressure, are used the 3rd sensor of fluid pressure for detecting the second throttling device In the 4th sensor of detection outdoor environment temperature, the 5th sensor for detecting the radiator temperature and for examining Survey the 6th sensor of indoor environment temperature；The air-conditioning further includes that described in any item controls of claim 6-10 such as fill It sets.
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