CN106969524A - The balance method of air-conditioning pressure balance system and air-conditioning pressure difference - Google Patents

The balance method of air-conditioning pressure balance system and air-conditioning pressure difference Download PDF

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Publication number
CN106969524A
CN106969524A CN201611242146.2A CN201611242146A CN106969524A CN 106969524 A CN106969524 A CN 106969524A CN 201611242146 A CN201611242146 A CN 201611242146A CN 106969524 A CN106969524 A CN 106969524A
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China
Prior art keywords
valve
heat exchanger
air
compressor
port
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Granted
Application number
CN201611242146.2A
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Chinese (zh)
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CN106969524B (en
Inventor
程威
刘树清
许永锋
梁伯启
蒋运鹏
李华勇
马进
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201611242146.2A priority Critical patent/CN106969524B/en
Publication of CN106969524A publication Critical patent/CN106969524A/en
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Classifications

    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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

Abstract

The invention provides a kind of air-conditioning pressure balance system and the balance method of air-conditioning pressure difference, wherein, a kind of air-conditioning pressure balance system, including：The changeover module of outdoor unit recirculation assembly, indoor set recirculation assembly and connection outdoor unit recirculation assembly and indoor set recirculation assembly, wherein, outdoor unit recirculation assembly includes：Compressor, four-way valve, outdoor heat exchanger and gas-liquid separator, outdoor unit recirculation assembly also include：Oil eliminator, the first pipeline, the first valve, the second valve and at least one gear magnetic valve, on the pipeline of connection four-way valve and outdoor heat exchanger, each gear magnetic valve is connected with each part heat exchanger of outdoor heat exchanger.By technical scheme, existing valve body in existing system can be utilized, the control acted before increase start to valve body realizes that compressor is effectively pressed before opening, it is ensured that the reliability of compressor start, and then ensure that compressor operating is stable.

Description

The balance method of air-conditioning pressure balance system and air-conditioning pressure difference
Technical field
It is empty in particular to a kind of air-conditioning pressure balance system and one kind the present invention relates to household electrical appliance technical field The balance method of pressure regulation difference.
Background technology
Compressor is in start-up course in air-conditioning system, to ensure compressor start reliability of operation, it is desirable to compressor Start front exhaust side and return-air lateral pressure is basically identical, to ensure that compressor starts without pressure difference.Multiple on-line system pipeline structure is answered It is miscellaneous, and compressor time interval from shutting down to being then turned on is short, and in this period, system is difficult to, by high-low pressure complete equipilibrium, cause Exhaust side and return-air side pressure difference are excessive when being again turned on compressor, cause the presence of potential safety hazard during compressor start, when serious It is possible that failure.
Therefore, in the case where air-conditioning opening and closing time interval is very short, air-conditioning system high-low pressure pressure difference how is balanced, Compressor of air conditioner is started without pressure difference, to ensure the reliability of compressor of air conditioner startup, have become technology urgently to be resolved hurrily and ask Topic.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of air-conditioning pressure balance system.
It is another object of the present invention to propose a kind of balance method of air-conditioning pressure difference.
To achieve the above object, a kind of technical scheme according to the first aspect of the invention, it is proposed that air-conditioning pressure balance System, including：Outdoor unit recirculation assembly, indoor set recirculation assembly and connection outdoor unit recirculation assembly and indoor set recirculation assembly Changeover module, wherein, outdoor unit recirculation assembly includes：Compressor, four-way valve, outdoor heat exchanger and gas-liquid separator, it is outdoor Machine recirculation assembly also includes：Oil eliminator, between the first valve port and compressor, the first of oil eliminator and compressor Exhaust outlet is connected, and second mouthful of oil eliminator is connected with the first valve port；First pipeline, connects gas outlet and the pressure of gas-liquid separator The gas returning port of contracting machine；First valve, one end of the first valve is connected with the 4th of oil eliminator the mouthful by pipeline, the other end of the first valve It is connected to by pipeline on the first pipeline；Second valve, one end of the second valve is connected with the second of oil eliminator mouthful by pipeline, the The other end of two valves is connected on the first pipeline by pipeline；At least one gear magnetic valve, located at connection four-way valve and outdoor On the pipeline of heat exchanger, each gear magnetic valve is connected with each part heat exchanger of outdoor heat exchanger.
The air-conditioning pressure balance system of technique according to the invention scheme, can in existing system existing valve body base On plinth, the control that increase application valve body is acted before being now turned in fact to valve body can also control and switch heat exchanger gear, with full Sufficient various combination workload demand, realizes that compressor is effectively pressed before opening, while in the 3rd valve port and the pipeline of outdoor heat exchanger On, at least one gear magnetic valve is set, and each gear magnetic valve is connected with each part heat exchanger of outdoor heat exchanger, in system It is cold, heat and mix in heating mode, whole gear magnetic valves are opened, in the pattern of hybrid refrigeration, are determined to keep off according to load The quantity that position magnetic valve is opened, so that the refrigerant flowed out via gear magnetic valve and outdoor heat exchanger is gas liquid mixture, To strengthen refrigeration, by above-mentioned technical proposal, before compressor is opened or after close compressor, by all application valve bodies It is fully open, it is ensured that the reliability of compressor start, and then ensure the stability of compressor operating.
According to above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly passes through the first stop valve with changeover module And second stop valve be connected, wherein, the first stop valve is connected with outdoor heat exchanger, and the second stop valve and the 3rd valve port pass through the One check valve is connected, and the second stop valve is connected with outdoor heat exchanger by the second check valve；In cooling mode, refrigerant is by switching Component is flowed out by the second stop valve, and the 3rd valve port is flow to through the first check valve, into gas-liquid separator；In a heating mode, Refrigerant is flowed out from the second stop valve, and outdoor heat exchanger is flowed into through the second check valve and at least one gear magnetic valve.
In the technical scheme, by setting the first stop valve and second between outdoor unit recirculation assembly and changeover module Stop valve, can cut off the pipeline forced seal of connection during being dismounted to indoor set and outdoor unit, it is ensured that pipe The stabilization of road fluid movement, and then ensure that effective switching that air-conditioning can be between multiple-working mode.
According to above-mentioned technical proposal of the present invention, it is preferable that the first valve port of four-way valve is connected with compressor, the of four-way valve Two valve ports are connected with the first stop valve, and the 3rd valve port of four-way valve is connected with the first end of outdoor heat exchanger, and the 4th of four-way valve the Valve port is connected with the air inlet of gas-liquid separator.
In the technical scheme, each valve port of four-way valve is connected with different elements, by controlling four-way valve connection different Pipeline, change flow direction of the refrigerant in system pipeline, and then it is mutual between refrigeration and heating mode to realize air-conditioning Conversion.
According to above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly also includes：Second pipeline, connection first Valve port and second mouthful；First capillary, is connected between the first pipeline and the 4th mouthful with the first valve；And second capillary, with Second valve is connected between the first pipeline and the second pipeline.
In the technical scheme, the first capillary and the cold medium flux in the corresponding pipeline of the first capillary control, Jin Erneng The flow velocity and pressure of enough control refrigerant in correspondence pipeline, improve air-conditioning system service efficiency, and then reach preferably heat exchange effect Really.For the more preferable return-air when compressor of air conditioner is opened, by the second pipeline and the first pipeline by pipeline connection, wherein, the Two pipelines are to set the second valve in the middle of the first valve port of connection and second mouthful of pipeline, pipeline to control the second pipeline and the first pipeline Connection and disconnection, then the hydraulic oil come out from the second pipeline entered by the pressure release of the second capillary in the way of low pressure gas Enter the gas returning port of compressor.By the pressure release of the first capillary and the second capillary, hydraulic oil and high pressure gas return to return-air side, The pressure difference between compressor air-discharging side and return-air side can be made up, so that it is excessive to run pressure difference during compressor, so as to be effectively reduced The possibility that accident occurs.
According to above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly also includes：Return line, return line One end be connected with the gas returning port of compressor, the other end of return line is connected with the 3rd mouthful；Oil return capillary, located at oil return pipe Lu Shang, refrigerant is by the 3rd mouthful of discharge, through loop capillary from gas returning port flows back into compressor.
In the technical scheme, air-conditioning is opened, and compressor is in working condition, the gas and oil of the HTHP of exhaust outlet discharge Mixture, by oil eliminator, hydraulic oil is filtered in oil eliminator, in order to maintain the fuel feeding of compressor to circulate, oil separation Hydraulic oil in device is flowed into return line from the 3rd mouthful of outflow in oil eliminator, by the oil return hair on return line Tubule, hydraulic oil is changed into low pressure oil, flow back into answering back for compressor, so that hydraulic oil can be reused by compressor.
According to the above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly also includes：3rd check valve, is located at Connect the second valve port and on the pipeline on the main line being made up of each branch road of at least one gear magnetic valve, refrigerant is by the second valve port Outflow, by the 3rd check valve and at least one gear magnetic valve, flows into outdoor heat exchanger.
In the technical scheme, the 3rd check valve can prevent from having been flowed into the refrigerant of outdoor heat exchanger in a heating mode Countercurrently, so as to ensure the stability of air-conditioning system operation, and then the service life of air-conditioning is improved.
According to above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly also includes：4th check valve, located at even In the outlet of logical outdoor heat exchanger and the pipeline of the second valve port, in a heating mode, refrigerant is flowed out by outdoor heat exchanger, through the Four check valves flow to the second valve port；5th check valve, located at the outlet of connection outdoor heat exchanger and the pipeline of the first stop valve On, in cooling mode, refrigerant is flowed out by outdoor heat exchanger, and the first stop valve is flow to through the 5th check valve.
In the technical scheme, under the pattern heated, refrigerant flows out from outdoor heat exchanger, is flow to by the 4th check valve Second valve port of four-way valve, the 4th valve port is flowed through into gas-liquid separator from the second valve port, and backflow is flowed out from gas-liquid separator To the refluxing opening of compressor；In cooling mode, refrigerant is flowed out from outdoor heat exchanger, and first section is flowed into by the 5th check valve Only valve, is flowed into indoor heat exchanger by the first stop valve, reaches the effect of cooling, by selecting the 4th check valve, can be hindered The only refrigerant adverse current in refrigeration mode, the 5th check valve can prevent in heating mode refrigerant adverse current.
According to above-mentioned technical proposal of the present invention, it is preferable that outdoor unit recirculation assembly also includes：6th check valve, located at even In the pipeline of logical 3rd valve port and the first stop valve, in a heating mode, refrigerant is flowed out by the 3rd valve port, through the 6th check valve stream To the first stop valve.
In the technical scheme, under heating mode, refrigerant is flowed out by the 3rd valve port, and the first cut-off is flow to through the 6th check valve Valve, when the first stop valve is closed, the 6th check valve can be prevented in refrigerant adverse current to the four-way valve in pipeline, and then ensure that The stability of air-conditioning system, it is to avoid damage other components.
According to any of the above-described technical scheme of the invention, it is preferable that changeover module includes：Switch separator, with first section Only valve is connected by pipeline, and refrigerant is flowing into switching separator by the first stop valve by the liquid inlet of switching separator；First Heat exchanger, first of First Heat Exchanger is connected with switching the liquid outlet of separator；Second heat exchanger, with First Heat Exchanger string Connection, refrigerant flows through First Heat Exchanger by liquid outlet, flows into the second heat exchanger；3rd valve, located at first of the second heat exchanger with On first connected pipeline of First Heat Exchanger；Wherein, First Heat Exchanger and the second heat exchanger are plate type heat exchanger.
In the technical scheme, gaseous coolant is exported by switching the gaseous state flowed to after separator above, and liquid refrigerants leads to Cross after switching separator, flow to following liquid outlet, switching separator has the effect of gas and liquid in separation refrigerant；It is cold Matchmaker needs to realize the exchange of heat by heat exchanger, and board-like heat exchanger can ensure fully contacting for refrigerant and heat exchanger, together When, heat exchanger is divided into First Heat Exchanger and the second heat exchanger, the 3rd valve is set therebetween, in refrigeration and hybrid refrigeration pattern In when thering is the liquid to be flowed out from switching separator, opening and closing of the 3rd valve can control the stream of liquid in switching separator Logical, liquid is by the 3rd valve from first of First Heat Exchanger flow to the second heat exchanger first.
According to above-mentioned technical proposal of the present invention, it is preferable that changeover module also includes：4th valve of adjustable valve port size with And the 5th valve to be opened/closed, wherein, the 4th valve is in parallel with the 5th valve to form orifice union, and one end of orifice union is connected to second Second of heat exchanger, the other end of orifice union is connected to the pipeline of first extension through the second heat exchanger.
In the technical scheme, by the orifice union of the 4th valve formation in parallel with the 5th valve, can be rapidly adjusted The flow velocity of the refrigerant of two heat exchangers outflow, to ensure effective operation of air-conditioning system.
According to above-mentioned technical proposal of the present invention, it is preferable that in cooling mode, refrigerant by switching separator liquid outlet stream Go out, after First Heat Exchanger and the 3rd valve, a part of refrigerant flows back into second section by the second heat exchanger and orifice union Only valve, another part refrigerant is flowed to after indoor set recirculation assembly, flows back into the second stop valve；In a heating mode, refrigerant is by cutting The gas outlet outflow of separator is changed, is flowed out through indoor set recirculation assembly, after the second heat exchanger, a part of refrigerant passes through throttling Component flows back into the second stop valve, and another part refrigerant, which is flowed to, flows back into the second stop valve after indoor set recirculation assembly.
In the technical scheme, during kind of refrigeration cycle, a part of refrigerant is flow back into by the second heat exchanger and orifice union Second stop valve, another part refrigerant is flowed to after indoor set recirculation assembly, the second stop valve is flow back into, further in pipeline Refrigerant is subcooled, and effectively increases the refrigeration of air-conditioning system.When heating circulation, after refrigerant is by the second heat exchanger, one Part flows back into the second stop valve by orifice union, is exchanged heat, carried again by First Heat Exchanger and the second heat exchanger High system service efficiency, another part flows to indoor set recirculation assembly, fully exchanged heat by indoor heat exchanger, reached very well Heating effect.
According to the technical scheme of the present invention, it is preferable that in a hybrid mode, when outdoor heat exchanger is condensed, Refrigerant be gas-liquid mixed refrigerant, wherein, gaseous coolant by gas outlet get in machine recirculation assembly at least one first In indoor heat exchanger, after being exchanged heat through at least one first indoor heat exchanger, the second heat exchanger is flowed into, liquid refrigerants sequentially passes through the After one heat exchanger and the 3rd valve, a part of liquid refrigerants flows back into the second cut-off by the second heat exchanger and orifice union Valve, another part liquid refrigerants is flowed to after at least one second indoor heat exchanger, flows back into the second stop valve；Work as outdoor heat exchanger When being evaporated, refrigerant flows at least one second indoor heat exchanger by gas outlet and tentatively exchanged heat, by least one The refrigerant of two indoor heat exchangers outflow passes through the second heat exchanger, and a part of refrigerant flow to the second stop valve by orifice union, separately A part of refrigerant flow to the second stop valve after at least one first indoor heat exchanger.
In the technical scheme, gas-liquid mixed refrigerant enters switching separator after separation, and gaseous coolant enters at least one Exchanged heat, then flowed into after the second heat exchanger and First Heat Exchanger further heat exchange outdoor in individual first indoor heat exchanger Thermomechanical components, liquid refrigerants is sequentially passed through after First Heat Exchanger and the 3rd valve, a part of liquid refrigerants by the second heat exchanger with And orifice union flows back into outdoor unit component, another part liquid refrigerants is flowed to after at least one second indoor heat exchanger, flowed back to To outdoor unit component；When outdoor heat exchanger is evaporated, refrigerant flows at least one second indoor heat exchanger by gas outlet Tentatively exchanged heat, the refrigerant flowed out by least one second indoor heat exchanger passes through the second heat exchanger, and a part of refrigerant passes through Orifice union flow to the second stop valve, and another part refrigerant flow to the second cut-off after at least one first indoor heat exchanger Valve, realizes more preferable heat transfer effect, and by such scheme, by the cooperation of gear magnetic valve and switching separator, gas-liquid is mixed Fit shunting, realizes indoor mixed mode, existing valve body in existing system is also fully utilized by addition, is opened by increase The control acted before machine to valve body, realizes that compressor is effectively pressed before opening, while can also control and switch heat exchanger gear, To meet various combination workload demand, it is ensured that the reliability of compressor start, and then ensure that compressor operating is stable.
Technical scheme according to the second aspect of the invention, it is proposed that a kind of balance method of air-conditioning pressure difference, for this hair The air-conditioning pressure balance system of any one technical scheme in bright first aspect, including：Adjustment signal is received, according to control signal Adjust the operational mode of air-conditioning；Receive the control signal of control starting of air conditioner or stopping；According to control signal, control in air-conditioning First valve of outdoor recirculation assembly, the second valve, the opening and closing of each gear magnetic valve, and control what is be connected with outdoor recirculation assembly The opening and closing of switching valve in changeover module.
The balance method of the air-conditioning pressure difference of technique according to the invention scheme, can switch air-conditioning according to adjustment signal To corresponding operational mode, then using existing valve body in existing system, by increasing the control acted before start to valve body, Realize that compressor is effectively pressed before opening, while can also control and switch heat exchanger gear, to meet various combination load need Ask, it is ensured that the reliability of compressor start, and then ensure that compressor operating is stable.
According to above-mentioned technical proposal of the present invention, it is preferable that when the adjustment signal that air-conditioning is received is cooling signals, by sky Adjust and shift to refrigeration mode, the first valve port of four-way valve is connected with the second valve port, the 3rd valve port of four-way valve and the 4th valve port connect It is logical；If control signal is enabling signal, the first valve, the second valve, switching valve and each gear magnetic valve are opened；When opening the When the first delay time after one valve, the second valve, switching valve and each gear magnetic valve is more than the first preset time, the is closed One valve, the second valve, switching valve and each gear magnetic valve, open compressor；If control signal is stop signal, pressure is closed Contracting machine, when the second delay time after close compressor is more than the second preset time, opens the first valve, the second valve, switching valve And each gear magnetic valve.
In the technical scheme, during kind of refrigeration cycle, the first valve port of four-way valve is connected with the second valve port, and the 3rd of four-way valve the Valve port is connected with the 4th valve port, before compressor is opened, and opens the first valve, the second valve, switching valve and each gear electromagnetism Valve, with Fast-Balance system high-low pressure pressure difference, when the duration of unlatching reaching the first preset time, closes the first valve, the Two valves, switching valve and each gear magnetic valve, are then turned on compressor, compressor is started without pressure difference, after compressor is opened, All of above valve is run according to normal control logic.After close compressor, if the duration is more than the second preset time, The first valve, the second valve, switching valve and each gear magnetic valve is controlled to open, to realize that compressor is effectively pressed before opening, really Protect the reliability of compressor start.
According to the technical scheme of the present invention, it is preferable that, will when the adjustment signal that air-conditioning is received is to heat signal Air-conditioning switches to heating mode, and the first valve port of four-way valve is connected with the 3rd valve port, the second valve port and the 4th valve port of four-way valve Connection；If control signal is enabling signal, the first valve, the second valve, switching valve and each gear magnetic valve are opened；Work as unlatching When the first delay time after first valve, the second valve, switching valve and each gear magnetic valve is more than the first preset time, close First valve, the second valve, switching valve and each gear magnetic valve, open compressor；If control signal is stop signal, close Compressor, determines the second delay time after close compressor, when the second delay time is more than the second preset time, opens the One valve, the second valve, switching valve and each gear magnetic valve.
In the technical scheme, when heating circulation, the first valve port of four-way valve is connected with the 3rd valve port, and the second of four-way valve Valve port is connected with the 4th valve port, before compressor is opened, and opens the first valve, the second valve, switching valve and each gear electromagnetism Valve, with Fast-Balance system high-low pressure pressure difference, when the duration of unlatching reaching the first preset time, closes the first valve, the Two valves, switching valve and each gear magnetic valve, are then turned on compressor, compressor is started without pressure difference, after compressor is opened, All of above valve is run according to normal control logic.After close compressor, if the duration is more than the second preset time, Control the first valve, the second valve, switching valve and each gear magnetic valve to open, with Fast-Balance system high-low pressure pressure difference, allow pressure Contracting machine starts without pressure difference.
According to the technical scheme of the present invention, it is preferable that when the adjustment signal that air-conditioning is received is hybrid refrigeration signal When, air-conditioning is switched into hybrid refrigeration pattern, the first valve port and the second valve port of four-way valve is connected, the 3rd valve of four-way valve is connected Mouth and the 4th valve port；If control signal is enabling signal, the first valve, the second valve, switching valve and each gear electromagnetism are opened Valve；When the first delay time after the first valve of unlatching, the second valve, switching valve and each gear magnetic valve, which is more than first, to be preset Between when, close the first valve, the second valve, switching valve and each gear magnetic valve, open compressor；If control signal is believed for stopping Number when, close compressor when the second delay time after close compressor is more than the second preset time, opens the first valve, the Two valves, switching valve and at least one gear magnetic valve, wherein the quantity for opening gear magnetic valve is less than the total of gear magnetic valve Quantity.
In the technical scheme, during hybrid refrigeration cycle, the first valve port and the second valve port of four-way valve are connected, four-way is connected 3rd valve port of valve and the 4th valve port, before compressor is opened, open the first valve, the second valve, switching valve and each gear Magnetic valve, with Fast-Balance system high-low pressure pressure difference, when the duration of unlatching reaching the first preset time, closes first Valve, the second valve, switching valve and each gear magnetic valve, are then turned on compressor, compressor is started without pressure difference, and compressor is opened Qi Hou, all of above valve is run according to normal control logic.After close compressor, if the duration is default more than second Between, then control the first valve, the second valve, switching valve and part gear magnetic valve to open, to realize that it is preceding effectively equal that compressor is opened Pressure, it is ensured that the reliability of compressor start, wherein the quantity for opening gear magnetic valve is less than the total quantity of gear magnetic valve, is improved Running efficiency of system, and then preferably reached the effect of hybrid refrigeration.
According to the technical scheme of the present invention, it is preferable that when the adjustment signal that air-conditioning is received is that mixing heats signal When, air-conditioning is switched into mixing heating mode, the first valve port and the 3rd valve port of four-way valve is connected, the second valve of four-way valve is connected Mouth and the 4th valve port；If control signal is enabling signal, the first valve, the second valve, switching valve and each gear electromagnetism are opened Valve；When the first delay time after the first valve of unlatching, the second valve, switching valve and each gear magnetic valve, which is more than first, to be preset Between when, close the first valve, the second valve, switching valve and each gear magnetic valve, open compressor；If control signal is believed for stopping Number, then close compressor, determines the second delay time after close compressor, is more than the second preset time in the second delay time When, open the first valve, the second valve, switching valve and each gear magnetic valve.
In the technical scheme, when mixing heats circulation, the first valve port and the 3rd valve port of four-way valve are connected, four-way is connected The second valve port and the 4th valve port of valve, before compressor is opened, open the first valve, the second valve, switching valve and each gear Magnetic valve, with Fast-Balance system high-low pressure pressure difference, when the duration of unlatching reaching the first preset time, closes first Valve, the second valve, switching valve and each gear magnetic valve, are then turned on compressor, compressor is started without pressure difference, and compressor is opened Qi Hou, all of above valve is run according to normal control logic.After close compressor, if the duration is default more than second Between, then control the first valve, the second valve, switching valve and part gear magnetic valve to open, to realize that it is preceding effectively equal that compressor is opened Pressure, it is ensured that the reliability of compressor start, wherein the quantity for opening gear magnetic valve is less than the total quantity of gear magnetic valve, is improved Running efficiency of system, and then preferably reached the effect that mixing is heated.
The additional aspect and advantage of the present invention will become obvious in following description section, or pass through the practice of the present invention Recognize.
Brief description of the drawings
Fig. 1 shows cooling cycle system schematic diagram according to an embodiment of the invention；
Fig. 2 shows the schematic flow sheet of the balance method of the air-conditioning pressure difference of one embodiment of the present of invention；
Fig. 3 shows heating recycle system schematic diagram according to an embodiment of the invention；
Fig. 4 shows hybrid refrigeration cycle system schematic according to still a further embodiment；
Fig. 5 shows mixing heating recycle system schematic diagram according to still another embodiment of the invention.
102 indoor set recirculation assemblies, 104 changeover modules, 106 outdoor unit recirculation assemblies, 108 compressors, 110 four-way valves, 112 outdoor heat exchangers, 114 gas-liquid separators, 116 oil eliminators, 118 first valves, 120 second valves, 122 the 3rd valves, 124 the 4th Valve, 126 the 5th valves, 128 first check valves, 130 second check valves, 132 the 3rd check valves, 134 the 4th check valves, 136 the 5th Check valve, 138 the 6th check valves, 140 first capillaries, 142 second capillaries, 144 backflow capillaries, 146 first stop valves, 148 second stop valves, 150 gear magnetic valves, 152 First Heat Exchangers, 154 second heat exchangers, 156 switching separators, the valves of a first Mouthful, the valve ports of b second, the valve ports of c the 3rd, the valve ports of d the 4th.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not limited to following public affairs The limitation for the specific embodiment opened.
Air-conditioning pressure balance system according to an embodiment of the invention is specifically described with reference to Fig. 1 to Fig. 5.
As shown in figure 1, embodiment according to the first aspect of the invention, it is proposed that a kind of air-conditioning pressure balance system, bag Include：Outdoor unit recirculation assembly 106, indoor set recirculation assembly 102 and connection outdoor unit recirculation assembly 106 and indoor set circulation group The changeover module 104 of part 102, wherein, outdoor unit recirculation assembly 106 includes：Compressor 108, four-way valve 110, outdoor heat exchanger 112 and gas-liquid separator 114, outdoor unit recirculation assembly 106 also includes：Oil eliminator 116, located at the first valve port a and compressor Between 108, the first of oil eliminator 116 is connected with the exhaust outlet of compressor 108, second mouthful and first of oil eliminator 116 Valve port a is connected；First pipeline, connects the gas outlet of gas-liquid separator 114 and the gas returning port of compressor 108；First valve 118, the One end of one valve 118 is connected with the 4th of oil eliminator 116 the mouthful by pipeline, and the other end of the first valve 118 is connected by pipeline In on the first pipeline；Second valve 120, one end of the second valve 120 is connected with second mouthful of oil eliminator 116 by pipeline, and second The other end of valve 120 is connected on the first pipeline by pipeline；At least one gear magnetic valve, located at connection four-way valve 110 with On the pipeline of outdoor heat exchanger 112, each gear magnetic valve is connected with each part heat exchanger of outdoor heat exchanger 112.
Air-conditioning pressure balance system according to an embodiment of the invention, can in existing system existing valve body basis On, the control that increase application valve body is acted before being now turned in fact to valve body can also control and switch heat exchanger gear, to meet Various combination workload demand, realizes that compressor is effectively pressed before opening, while on the pipeline of the 3rd valve port and outdoor heat exchanger, At least one gear magnetic valve is set, and each gear magnetic valve is connected with each part heat exchanger of outdoor heat exchanger, refrigeration, Heat and mix in heating mode, whole gear magnetic valves are opened, in the pattern of hybrid refrigeration, gear electricity is determined according to load The quantity that magnet valve is opened, so that the refrigerant flowed out via gear magnetic valve and outdoor heat exchanger is gas liquid mixture, to increase Strong refrigeration, it is before compressor is opened or after close compressor, all application valve bodies are whole by above-mentioned technical proposal Open, it is ensured that the reliability of compressor start, and then ensure the stability of compressor operating.
Specifically, after compressor 108 is shut down, system needs to reopen, and outer machine receives start-up command, and outer machine is in Standby mode, starts to compressor 108, is defined as stand-by time this period for T0, within the T0 times, the first valve 118 to the Five valves 126 and gear magnetic valve 150 are opened, and compressor 108 is pressed system before opening.I.e. outer machine receives start and referred to Order, the valve 126 of the first valve 118 to the 5th and gear magnetic valve 150 are opened, after compressor 108 starts, the first valve 118 to the 5th Valve 126 and gear magnetic valve 150 are controlled according to logic after start.When outer machine receives shutdown command, compressor 108 stops Machine, opens the valve 126 of the first valve 118 to the 5th and gear magnetic valve 150, the valve 126 of the first valve 118 to the 5th and gear electromagnetism The opening time of valve 150 is defined as T1.
According to the above embodiment of the present invention, it is preferable that outdoor unit recirculation assembly 106 passes through first section with changeover module 104 Only the stop valve 148 of valve 146 and second is connected, wherein, the first stop valve 146 is connected with outdoor heat exchanger 112, the second stop valve 148 are connected with the 3rd valve port c by the first check valve 128, and the second stop valve 148 and outdoor heat exchanger 112 are unidirectional by second Valve 130 is connected；In cooling mode, refrigerant is flowed out by changeover module 104 by the second stop valve 148, through the first check valve 128 The 3rd valve port c is flow to, into gas-liquid separator 114；In a heating mode, refrigerant flows out from the second stop valve 148, single through second Outdoor heat exchanger 112 is flowed into valve 130 and at least one gear magnetic valve.
In this embodiment, by setting the first stop valve between outdoor unit recirculation assembly 106 and changeover module 104 146 and second stop valve 148, the pipeline forced seal of connection can be cut during being dismounted to indoor set and outdoor unit It is disconnected, it is ensured that the stabilization of pipeline fluid movement, and then ensure that effective switching that air-conditioning can be between multiple-working mode.
Wherein, the second stop valve is low-pressure shutoff valve, only allows low-pressure fluid to pass through, and ends high-pressure fluid, passes through second The refrigerant of stop valve can only by the first check valve unidirectionally be flowed into the 3rd valve port, pass through the second check valve being flowed into unidirectionally Outdoor heat exchanger, when user uses air conditioner refrigerating, refrigerant flows through low pressure refrigerant in the second stop valve, refrigerant from the second stop valve Outflow, the 3rd valve port of four-way valve is flow to through the first check valve, after gas-liquid separator, the gas returning port of compressor is back to.
According to the above embodiment of the present invention, it is preferable that the first valve port a of four-way valve 110 is connected with compressor 108, four-way Second valve port b of valve 110 is connected with the first stop valve 146, the 3rd valve port c of four-way valve 110 and the first of outdoor heat exchanger 112 End is connected, and the 4th valve port d of four-way valve 110 is connected with the air inlet of gas-liquid separator 114.
In this embodiment, each valve port of four-way valve 110 is connected with different elements, by controlling four-way valve 110 to connect Different pipelines, changes flow direction of the refrigerant in system pipeline, and then realize air-conditioning between refrigeration and heating mode Mutually conversion.
Wherein, when user needs air conditioner refrigerating, user sends the first valve port a and the 4th in refrigeration instruction, four-way valve Valve port d is connected, and the second valve port b is connected with the 3rd valve port c；When user needs to heat, the first valve port a of four-way valve and Two valve port b are connected, and the 3rd valve port c is connected with the 4th valve port d.
According to the above embodiment of the present invention, it is preferable that outdoor unit recirculation assembly 106 also includes：Second pipeline, connection first Valve port a and second mouthful；First capillary 140, is connected between the first pipeline and the 4th mouthful with the first valve 118；And second mao Tubule 142, is connected between the first pipeline and the second pipeline with the second valve 120.
In this embodiment, the first capillary 140 and the cold medium flux in the second corresponding pipeline of the control of capillary 142, enter And the flow velocity and pressure of the refrigerant in correspondence pipeline can be controlled, air-conditioning system service efficiency is improved, and then reach and preferably change Thermal effect.For the more preferable return-air when compressor of air conditioner is opened, by the second pipeline and the first pipeline by pipeline connection, its In, the second pipeline be the second valve 120 is set in the middle of connection the first valve port and second mouthful of pipeline, pipeline come control the second pipeline and The connection and disconnection of first pipeline, the hydraulic oil come out from the second pipeline is by the pressure release of the second capillary, then with low pressure gas Mode enter compressor gas returning port.By the pressure release of the first capillary and the second capillary, hydraulic oil and high pressure gas are returned To return-air side, the pressure difference between compressor air-discharging side and return-air side can be made up, so that it is excessive to run pressure difference during compressor, so as to Effectively reduce the possibility that accident occurs.
According to the above embodiment of the present invention, it is preferable that outdoor unit recirculation assembly 106 also includes：Return line, return line One end be connected with the gas returning port of compressor 108, the other end of return line is connected with the 3rd mouthful；Oil return capillary 144, is located at On return line, refrigerant is flow back into compressor 108 by the 3rd mouthful of discharge through loop capillary from gas returning port.
In this embodiment, air-conditioning is opened, and compressor 108 is in working condition, the gas of the HTHP of exhaust outlet discharge Oily mixture, by oil eliminator, hydraulic oil is filtered in oil eliminator, in order to maintain the fuel feeding of compressor to circulate, oil From the hydraulic oil in device from the 3rd mouthful of outflow in oil eliminator, it is flowed into return line, by the oil return on return line Capillary 144, hydraulic oil is changed into low pressure oil, flow back into answering back for compressor 108, so that oil body can repeat profit by compressor 108 With.
According to the abovementioned embodiments of the present invention, it is preferable that outdoor unit recirculation assembly 106 also includes：3rd check valve 132, On the second valve port b of connection and the pipeline on main line being made up of each branch road of at least one gear magnetic valve, refrigerant is by the Two valve port b flow out, by the 3rd check valve 132 and at least one gear magnetic valve, flow into outdoor heat exchanger 112.
In this embodiment, the 3rd check valve 132 can be prevented from having been flowed into outdoor heat exchanger 122 in a heating mode Refrigerant adverse current, so as to ensure the stability of air-conditioning system operation, and then improves the service life of air-conditioning.
According to the above embodiment of the present invention, it is preferable that outdoor unit recirculation assembly 106 also includes：4th check valve 134, if In on the outlet of connection outdoor heat exchanger 112 and the second valve port b pipeline, in a heating mode, refrigerant is by outdoor heat exchanger 112 outflows, the second valve port b is flow to through the 4th check valve 134；5th check valve 136, located at going out for connection outdoor heat exchanger 112 On the pipeline of mouth and the first stop valve 146, in cooling mode, refrigerant is flowed out by outdoor heat exchanger 112, through the 5th check valve 136 flow to the first stop valve 146.
In this embodiment, under the pattern heated, refrigerant flows out from outdoor heat exchanger 112, by the 4th check valve 134 The second valve port b of four-way valve is flow to, the 4th valve port d is flowed through into gas-liquid separator from the second valve port b, is flowed from gas-liquid separator Go out to be back to the refluxing opening of compressor；In cooling mode, refrigerant flows out from outdoor heat exchanger 112, by the 5th check valve 136 The first stop valve 146 is flowed into, is flowed into by the first stop valve 146 in indoor heat exchanger, reaches the effect of cooling, passes through choosing With the 4th check valve 134, the refrigerant adverse current in refrigeration mode can be prevented, the 5th check valve 136 can prevent cold in heating mode Matchmaker's adverse current.
According to the above embodiment of the present invention, it is preferable that outdoor unit recirculation assembly 106 also includes：6th check valve 138, if In the pipeline for connecting the 3rd valve port c and the first stop valve 146, in a heating mode, refrigerant is flowed out by the 3rd valve port c, through the Six check valves 138 flow to the first stop valve 146.
In this embodiment, under heating mode, refrigerant is flowed out by the 3rd valve port c, and first section is flow to through the 6th check valve 138 Only valve 146, when the first stop valve 146 is closed, the 6th check valve 138 can prevent refrigerant adverse current in pipeline to four-way valve In 110, and then it ensure that the stability of air-conditioning system, it is to avoid damage other components.
According to any of the above-described embodiment of the invention, it is preferable that changeover module 104 includes：Switch separator 156, with the One stop valve 146 is connected by pipeline, and refrigerant is cut by the first stop valve 146 by the liquid inlet inflow of switching separator 156 Change separator 156；First Heat Exchanger 152, first of First Heat Exchanger 152 is connected with switching the liquid outlet of separator 156；The Two heat exchangers 154, connect with First Heat Exchanger 152, and refrigerant flows through First Heat Exchanger 152 by liquid outlet, flow into the second heat exchanger 154；3rd valve 122, on first of the second heat exchanger 154 pipeline being connected with first of First Heat Exchanger 152；Its In, the heat exchanger 154 of First Heat Exchanger 152 and second is plate type heat exchanger.
In this embodiment, the 3rd valve 122 is used to controlling being flowed out by switching separator 156 the flow velocity of refrigerant, pressure with And flow, air-conditioning system service efficiency is improved, and then reach more preferable heat transfer effect.Wherein, plate type heat exchanger is by a series of Thin rectangular shape passage is formed between a kind of high-performance heat exchanger of sheet metal closed assembly with certain bellows-shaped, various plates, Heat exchange is carried out by plate, heat exchange efficiency height, small heat loss, advantages of compact and light structure, floor space is small, is widely used, makes Use long lifespan.
According to the above embodiment of the present invention, it is preferable that changeover module 104 also includes：4th valve of adjustable valve port size 124 and the 5th valve 126 to be opened/closed, wherein, the 4th valve 124 and the 5th valve 126 is in parallel forms orifice union, orifice union One end is connected to second of the second heat exchanger 154, and the other end of orifice union is connected to first through the second heat exchanger 154 The pipeline of extension.
In this embodiment, in refrigeration and the pattern of hybrid refrigeration, refrigerant is flowed into section after indoor heat exchanger outflow Flow in component, wherein the 4th valve is closed, the 5th valve is opened, and refrigerant enters second of the second heat exchanger after switching valve； In heating and mixing heating mode, refrigerant is flowed into switching valve after indoor heat exchanger outflow, and the 4th valve is opened, and the 5th Valve is opened, and refrigerant enters second of the second heat exchanger after switching valve is depressurized, and the choke valve in changeover module both can be with Ensure the circulation of refrigerant, can play depressurization to refrigerant again.
According to the above embodiment of the present invention, it is preferable that in cooling mode, refrigerant by switching separator 156 liquid outlet Outflow, after the valve 122 of First Heat Exchanger 152 and the 3rd, a part of refrigerant passes through the second heat exchanger 154 and orifice union stream The second stop valve 148 is back to, another part refrigerant is flowed to after indoor set recirculation assembly 102, flows back into the second stop valve 148； Under heating mode, refrigerant is flowed out by the gas outlet of switching separator 156, is flowed out, is changed by second through indoor set recirculation assembly 102 After hot device 154, a part of refrigerant flows back into the second stop valve 148 by orifice union, and another part refrigerant flows to indoor set and followed The second stop valve 148 is flow back into after ring assemblies 102.
In this embodiment, during kind of refrigeration cycle, a part of refrigerant is flow back into by the second heat exchanger 154 and orifice union Second stop valve 148, another part refrigerant is flowed to after indoor set recirculation assembly 102, flows back into the second stop valve 148, further Refrigerant in pipeline is subcooled, the refrigeration of air-conditioning system is effectively increased.When heating circulation, refrigerant is changed by second After hot device 154, a part flows back into the second stop valve 148 by orifice union, again by First Heat Exchanger 152 and second Heat exchanger 154 is exchanged heat, and improves system service efficiency, and another part flows to indoor set recirculation assembly 102, changed by interior Hot device fully exchanges heat, and has reached good heating effect.
According to one embodiment of present invention, it is preferable that in a hybrid mode, when outdoor heat exchanger 112 is condensed, Refrigerant is gas-liquid mixed refrigerant, wherein, gaseous coolant by gas outlet get in machine recirculation assembly 102 at least one the In one indoor heat exchanger, after being exchanged heat through at least one first indoor heat exchanger, the second heat exchanger 154 is flowed into, liquid refrigerants is successively After the valve 122 of First Heat Exchanger 152 and the 3rd, a part of liquid refrigerants passes through the second heat exchanger 154 and orifice union The second stop valve 148 is flow back into, another part liquid refrigerants is flowed to after at least one second indoor heat exchanger, flows back into second section Only valve 148；When outdoor heat exchanger 112 is evaporated, refrigerant flows at least one second indoor heat exchanger by gas outlet and entered The preliminary heat exchange of row, the refrigerant flowed out by least one second indoor heat exchanger passes through the second heat exchanger 154, and a part of refrigerant passes through Orifice union flow to the second stop valve 148, and another part refrigerant flow to second section after at least one first indoor heat exchanger Only valve 148.
In this embodiment, gas-liquid mixed refrigerant enters switching separator 156 after separation, and gaseous coolant enters at least one Exchanged heat in individual first indoor heat exchanger, then by the second heat exchanger 154 with being flowed after First Heat Exchanger 152 further heat exchange Enter outdoor thermomechanical components, liquid refrigerants is sequentially passed through after the valve 122 of First Heat Exchanger 152 and the 3rd, and a part of liquid refrigerants passes through Second heat exchanger 154 and orifice union flow back into outdoor unit component, and another part liquid refrigerants flows at least one second Room After interior heat exchanger, outdoor unit component is flow back into；When outdoor heat exchanger 112 is evaporated, refrigerant is flowed at least by gas outlet One the second indoor heat exchanger is tentatively exchanged heat, and the refrigerant flowed out by least one second indoor heat exchanger is by the second heat exchange Device 154, a part of refrigerant flow to the second stop valve 148 by orifice union, and another part refrigerant passes through at least one first Room The second stop valve 148 is flow to after interior heat exchanger, good heat transfer effect is realized, by such scheme, passes through gear magnetic valve With the cooperation of switching separator, the shunting of gas liquid mixture realizes indoor mixed mode, existing system is also fully utilized by addition Existing valve body in system, by increasing the control acted before start to valve body, realizes that compressor 108 is effectively pressed before opening, together When can also control and switch heat exchanger gear, to meet various combination workload demand, it is ensured that compressor 108 start it is reliable Property, and then ensure that compressor 108 is stable.
As shown in Fig. 2 embodiment according to the second aspect of the invention, it is proposed that a kind of balance method of air-conditioning pressure difference, For the air-conditioning pressure balance system of any one embodiment in first aspect present invention, including：
Step S202, receives adjustment signal, the operational mode of air-conditioning is adjusted according to control signal；
Step S204, receives the control signal of control starting of air conditioner or stopping；
Step S206, according to control signal, the first valve 118 of the outdoor recirculation assembly in control air-conditioning, the second valve 120, The opening and closing of switching valve in the opening and closing of each gear magnetic valve, and the changeover module 104 that is connected with outdoor recirculation assembly of control.
The balance method of air-conditioning pressure difference, can switch to air-conditioning according to adjustment signal according to an embodiment of the invention Corresponding operational mode, it is real by increasing the control acted before start to valve body then using existing valve body in existing system Existing compressor 108 is effectively pressed before opening, while can also control and switch heat exchanger gear, to meet various combination load need Ask, it is ensured that the reliability that compressor 108 starts, and then ensure that compressor 108 is stable.
Wherein, user is turned on or off air-conditioning when using air-conditioning with remote control, and air-conditioning is opened and closed in air-conditioning Before, control signal is first converted into adjusting signal, and the operational mode that will be carried out to air-conditioning is prepared, such as adjusts air-conditioning In the first valve of outdoor recirculation assembly, the second valve, the opening and closing of each gear magnetic valve, and control and outdoor recirculation assembly phase The opening and closing of switching valve in changeover module even, a reliable and stable environment is provided for the opening and closing of air-conditioning.
As shown in figure 1, according to the above embodiment of the present invention, it is preferable that when the adjustment signal that air-conditioning is received is believed for refrigeration Number when, air-conditioning is switched into refrigeration mode, the first valve port a of four-way valve 110 is connected with the second valve port b, the 3rd of four-way valve 110 the Valve port c is connected with the 4th valve port d；If control signal be enabling signal, open the first valve 118, the second valve 120, switching valve with And each gear magnetic valve；First after the first valve 118, the second valve 120, switching valve and each gear magnetic valve is opened prolongs When time when being more than the first preset time, close the first valve 118, the second valve 120, switching valve and each gear magnetic valve, open Open compressor 108；If control signal is stop signal, close compressor 108, the second delay after close compressor 108 When time is more than the second preset time, the first valve 118, the second valve 120, switching valve and each gear magnetic valve are opened.
In this embodiment, during kind of refrigeration cycle, the first valve port a of four-way valve 110 is connected with the second valve port b, four-way valve 110 The 3rd valve port c connected with the 4th valve port d, open compressor 108 before, open the first valve 118, the second valve 120, switching valve And each gear magnetic valve, with Fast-Balance system high-low pressure pressure difference, the first preset time is reached when the duration of unlatching When, the first valve 118, the second valve 120, switching valve and each gear magnetic valve are closed, compressor 108 is then turned on, makes compression Machine 108 starts without pressure difference, and after compressor 108 is opened, all of above valve is run according to normal control logic.In close compressor After 108, if the duration is more than the second preset time, the first valve 118, the second valve 120, switching valve and each gear are controlled Position magnetic valve is opened, to realize that compressor 108 is effectively pressed before opening, it is ensured that the reliability that compressor 108 starts.
As shown in figure 3, according to one embodiment of present invention, it is preferable that when the adjustment signal that air-conditioning is received is to heat During signal, air-conditioning is switched into heating mode, the first valve port a of four-way valve 110 is connected with the 3rd valve port c, the of four-way valve 110 Two valve port b are connected with the 4th valve port d；If control signal is enabling signal, the first valve 118, the second valve 120, switching valve are opened And each gear magnetic valve；First after the first valve 118, the second valve 120, switching valve and each gear magnetic valve is opened When delay time is more than the first preset time, the first valve 118, the second valve 120, switching valve and each gear magnetic valve are closed, Open compressor 108；If control signal is stop signal, close compressor 108 determines second after close compressor 108 Delay time, the second delay time be more than the second preset time when, open the first valve 118, the second valve 120, switching valve and Each gear magnetic valve.
In this embodiment, when heating circulation, the first valve port a of four-way valve 110 is connected with the 3rd valve port c, four-way valve 110 The second valve port b connected with the 4th valve port d, open compressor 108 before, open the first valve 118, the second valve 120, switching valve And each gear magnetic valve, with Fast-Balance system high-low pressure pressure difference, the first preset time is reached when the duration of unlatching When, the first valve 118, the second valve 120, switching valve and each gear magnetic valve are closed, compressor 108 is then turned on, makes compression Machine 108 starts without pressure difference, and after compressor 108 is opened, all of above valve is run according to normal control logic.In close compressor After 108, if the duration is more than the second preset time, the first valve 118, the second valve 120, switching valve and each gear are controlled Position magnetic valve is opened, with Fast-Balance system high-low pressure pressure difference, allows compressor 108 to start without pressure difference, refrigerant in outdoor by following Energy is absorbed in ring assemblies, is released energy indoors in recirculation assembly, the effect of indoor heating has been reached.
As shown in figure 4, according to one embodiment of present invention, it is preferable that when the adjustment signal that air-conditioning is received is mixing During cooling signals, air-conditioning is switched into hybrid refrigeration pattern, the first valve port a and the second valve port b of four-way valve 110, connection is connected 3rd valve port c of four-way valve 110 and the 4th valve port d；If control signal is enabling signal, the first valve 118, the second valve are opened 120th, switching valve and each gear magnetic valve；When the first valve 118 of unlatching, the second valve 120, switching valve and each gear electromagnetism When the first delay time after valve is more than the first preset time, the first valve 118, the second valve 120, switching valve and each gear are closed Position magnetic valve, opens compressor 108；If control signal is stop signal, close compressor 108, after close compressor 108 The second delay time be more than the second preset time when, open the first valve 118, the second valve 120, switching valve and at least one gear Position magnetic valve, wherein the quantity for opening gear magnetic valve is less than the total quantity of gear magnetic valve.
In this embodiment, during hybrid refrigeration cycle, the first valve port a and the second valve port b of four-way valve 110, connection are connected 3rd valve port c of four-way valve 110 and the 4th valve port d, open compressor 108 before, open the first valve 118, the second valve 120, Switching valve and each gear magnetic valve, with Fast-Balance system high-low pressure pressure difference, reach that first is pre- when the duration of unlatching If during the time, closing the first valve 118, the second valve 120, switching valve and each gear magnetic valve, being then turned on compressor 108, Compressor 108 is set to start without pressure difference, after compressor 108 is opened, all of above valve is run according to normal control logic.Closing pressure After contracting machine 108, if the duration is more than the second preset time, the first valve 118, the second valve 120, switching valve and portion are controlled Gear magnetic valve is divided to open, to realize that compressor 108 is effectively pressed before opening, it is ensured that the reliability that compressor 108 starts, wherein The quantity for opening gear magnetic valve is less than the total quantity of gear magnetic valve, improves running efficiency of system, refrigerant in outdoor by following Part energy is discharged in ring assemblies, by switching the shunting of separator, part energy is absorbed indoors, a part of energy is discharged Amount, so as to realize hybrid refrigeration.
As shown in figure 5, according to one embodiment of present invention, it is preferable that when the adjustment signal that air-conditioning is received is mixing When heating signal, air-conditioning is switched into mixing heating mode, the first valve port a and the 3rd valve port c of four-way valve 110, connection is connected Second valve port b of four-way valve 110 and the 4th valve port d；If control signal is enabling signal, the first valve 118, the second valve are opened 120th, switching valve and each gear magnetic valve；When the first valve 118 of unlatching, the second valve 120, switching valve and each gear electromagnetism When the first delay time after valve is more than the first preset time, the first valve 118, the second valve 120, switching valve and each gear are closed Position magnetic valve, opens compressor 108；If control signal is stop signal, close compressor 108 determines close compressor 108 The second delay time afterwards, when the second delay time is more than the second preset time, opens the first valve 118, the second valve 120, cuts Change valve and each gear magnetic valve.
In this embodiment, when mixing heats circulation, the first valve port a and the 3rd valve port c of four-way valve 110, connection are connected Second valve port b of four-way valve 110 and the 4th valve port d, open compressor 108 before, open the first valve 118, the second valve 120, Switching valve and each gear magnetic valve, with Fast-Balance system high-low pressure pressure difference, reach that first is pre- when the duration of unlatching If during the time, closing the first valve 118, the second valve 120, switching valve and each gear magnetic valve, being then turned on compressor 108, Compressor 108 is set to start without pressure difference, after compressor 108 is opened, all of above valve is run according to normal control logic.Closing pressure After contracting machine 108, if the duration is more than the second preset time, the first valve 118, the second valve 120, switching valve and portion are controlled Gear magnetic valve is divided to open, to realize that compressor 108 is effectively pressed before opening, it is ensured that the reliability that compressor 108 starts, wherein The quantity for opening gear magnetic valve is less than the total quantity of gear magnetic valve, improves running efficiency of system, refrigerant in outdoor by following Part energy is discharged in ring assemblies, by switching the shunting of separator, part energy is absorbed indoors, a part of energy is discharged Amount, reaches the effect that mixing is heated.
Technical scheme has been described in detail above, the present invention proposes a kind of air-conditioning pressure balance system, can Using existing valve body in existing system, the control acted before increase start to valve body realizes that compressor is effectively pressed before opening, Ensure the reliability of compressor start, it is ensured that compressor operating is stable.
In the description of this specification, term " first ", " second " are only used for the purpose of description, and it is not intended that indicating Or imply relative importance；Term " connection ", " installation ", " fixation " etc. all should be interpreted broadly, for example, " connection " can be solid Calmly connect or be detachably connected, or be integrally connected；Can be joined directly together, can also be indirect by intermediary It is connected.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood as the case may be Body implication.
In the description of this specification, the description of term " one embodiment " etc. means that combining the embodiment or example describes Specific features, structure, material or feature be contained in the present invention at least one embodiment or example in.In this manual, Identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific features of description, knot Structure, material or feature can in an appropriate manner be combined in any one or more embodiments or example.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (17)

1. a kind of air-conditioning pressure balance system, including：Outdoor unit recirculation assembly (106), indoor set recirculation assembly (102) and company The changeover module (104) of the outdoor unit recirculation assembly (106) and the indoor set recirculation assembly (102) is connect, wherein, the room Outer machine recirculation assembly (106) includes：Compressor (108), four-way valve (110), outdoor heat exchanger (112) and gas-liquid separator (114), it is characterised in that the outdoor unit recirculation assembly (106) also includes：
Oil eliminator (116), between first valve port (a) and the compressor (108), the oil eliminator (116) First be connected with the exhaust outlet of the compressor (108), second mouthful of the oil eliminator (116) with first valve port (a) it is connected；
First pipeline, connects the gas outlet of the gas-liquid separator (114) and the gas returning port of the compressor (108)；
First valve (118), one end of first valve (118) is connected with the 4th mouthful of the oil eliminator (116) by pipeline, The other end of first valve (118) is connected on first pipeline by pipeline；
Second valve (120), one end of second valve (120) is connected with second mouthful of the oil eliminator (116) by pipeline, The other end of second valve (120) is connected on first pipeline by pipeline；
At least one gear magnetic valve (150), located at the pipe for connecting the four-way valve (110) and the outdoor heat exchanger (112) Lu Shang, each gear magnetic valve (150) is connected with each part heat exchanger of the outdoor heat exchanger (112).
2. air-conditioning pressure balance system according to claim 1, it is characterised in that the outdoor unit recirculation assembly (106) It is connected with the changeover module (104) by the first stop valve (146) and the second stop valve (148),
Wherein, first stop valve (146) is connected with the outdoor heat exchanger (112), second stop valve (148) and institute State the 3rd valve port (c) by the first check valve (128) to be connected, second stop valve (148) and the outdoor heat exchanger (112) It is connected by the second check valve (130)；
In cooling mode, refrigerant is flowed out by the changeover module (104) by second stop valve (148), through described One check valve (128) flow to the 3rd valve port (c), into the gas-liquid separator (114)；
In a heating mode, the refrigerant flows out from second stop valve (148), through second check valve (130) and At least one described gear magnetic valve (150) flows into the outdoor heat exchanger (112).
3. air-conditioning pressure balance system according to claim 2, it is characterised in that the first valve of the four-way valve (110) Mouth (a) is connected with the compressor (108), the second valve port (b) of the four-way valve (110) and first stop valve (146) It is connected, the 3rd valve port (c) of the four-way valve (110) is connected with the first end of the outdoor heat exchanger (112), the four-way valve (110) the 4th valve port (d) is connected with the air inlet of the gas-liquid separator (114).
4. air-conditioning pressure balance system according to claim 3, it is characterised in that the outdoor unit recirculation assembly (106) Also include：
Second pipeline, connects first valve port (a) and described second mouthful；
First capillary (140), is connected on first pipeline and described between 4th mouthful with first valve (118)；And
Second capillary (142), is connected between first pipeline and second pipeline with second valve (120).
5. air-conditioning pressure balance system according to claim 4, it is characterised in that the outdoor unit recirculation assembly (106) Also include：
Return line, one end of the return line is connected with the gas returning port of the compressor (108), the return line it is another One end is connected with described 3rd mouthful；
Oil return capillary (144), on the return line, refrigerant is by described 3rd mouthful discharge, through the loop capillary Flow back into from the gas returning port in the compressor (108).
6. air-conditioning pressure balance system according to claim 5, it is characterised in that the outdoor unit recirculation assembly (106) Also include：
3rd check valve (132), located at connection second valve port (b) and by least one gear magnetic valve (150) On the pipeline on the main line of each branch road composition, the refrigerant is flowed out by second valve port (b), by the 3rd check valve (132) outdoor heat exchanger (112) and at least one described gear magnetic valve (150), is flowed into.
7. air-conditioning pressure balance system according to claim 6, it is characterised in that the outdoor unit recirculation assembly (106) Also include：
4th check valve (134), located at the outlet for connecting the outdoor heat exchanger (112) and the pipe of second valve port (b) Lu Shang, in a heating mode, the refrigerant are flowed out by the outdoor heat exchanger (112), are flow to through the 4th check valve (134) Second valve port (b)；
5th check valve (136), located at the outlet and first stop valve (146) for connecting the outdoor heat exchanger (112) Pipeline on, in cooling mode, the refrigerant by the outdoor heat exchanger (112) flow out, through the 5th check valve (136) It flow to first stop valve (146).
8. air-conditioning pressure balance system according to claim 7, it is characterised in that the outdoor unit recirculation assembly (106) Also include：
6th check valve (138), located at connecting in pipeline of the 3rd valve port (c) with first stop valve (146), in system Under heat pattern, the refrigerant is flowed out by the 3rd valve port (c), and first cut-off is flow to through the 6th check valve (138) Valve (146).
9. air-conditioning pressure balance system according to any one of claim 1 to 8, it is characterised in that the changeover module (104) include：
Switch separator 156, be connected with first stop valve (146) by pipeline, the refrigerant is passing through described first section Only valve (146) flows into the switching separator 156 by the liquid inlet of the switching separator 156；
First Heat Exchanger (152), first of the First Heat Exchanger (152) with the liquid outlet phase of the switching separator 156 Even；
Second heat exchanger (154), connects with the First Heat Exchanger (152), and the refrigerant flows through described by the liquid outlet One heat exchanger (152), flows into second heat exchanger (154)；
3rd valve (122), located at first of second heat exchanger (154) and first of the First Heat Exchanger (152) On connected pipeline；
Wherein, the First Heat Exchanger (152) and second heat exchanger (154) are plate type heat exchanger.
10. air-conditioning pressure balance system according to claim 9, it is characterised in that the changeover module (104) is also wrapped Include：4th valve (124) of adjustable valve port size and the 5th valve (126) to be opened/closed,
Wherein, the 4th valve (124) is in parallel with the 5th valve (126) forms orifice union, one end of the orifice union Second of second heat exchanger (154) is connected to, the other end of the orifice union is connected to through second heat exchanger (154) pipeline of first extension.
11. air-conditioning pressure balance system according to claim 10, it is characterised in that
In cooling mode, the refrigerant is flowed out by the liquid outlet of the switching separator 156, through the First Heat Exchanger (152) and after the 3rd valve (122), a part of refrigerant passes through second heat exchanger (154) and the throttling Component flows back into second stop valve (148), and refrigerant described in another part is flowed to after the indoor set recirculation assembly (102), Flow back into second stop valve (148)；
In a heating mode, the refrigerant is flowed out by the gas outlet of the switching separator 156, through the indoor set recirculation assembly (102) flow out, after second heat exchanger (154), a part of refrigerant is flow back into described by the orifice union Second stop valve (148), refrigerant described in another part flows back into described second section after flowing to the indoor set recirculation assembly (102) Only valve (148).
12. air-conditioning pressure balance system according to claim 10, it is characterised in that in a hybrid mode,
When the outdoor heat exchanger (112) is condensed, the refrigerant is gas-liquid mixed refrigerant, wherein, gaseous coolant passes through The gas outlet enter the indoor set recirculation assembly (102) at least one first indoor heat exchanger in, through it is described at least After one the first indoor heat exchanger heat exchange, second heat exchanger (154) is flowed into, liquid refrigerants sequentially passes through first heat exchange After device (152) and the 3rd valve (122), a part of liquid refrigerants passes through second heat exchanger (154) and institute State orifice union and flow back into second stop valve (148), liquid refrigerants described in another part is flowed at least one second Room After heat exchanger, second stop valve (148) is flow back into；
When the outdoor heat exchanger (112) is evaporated, the refrigerant by the gas outlet flow into it is described at least one the Two indoor heat exchangers are tentatively exchanged heat, and the refrigerant flowed out by least one described second indoor heat exchanger is by described the Two heat exchangers (154), a part of refrigerant flow to second stop valve (148), another part by the orifice union The refrigerant flow to second stop valve (148) after at least one described first indoor heat exchanger.
13. a kind of balance method of air-conditioning pressure difference, for the air-conditioning pressure balance system any one of claim 1 to 12 System, it is characterised in that including：
Adjustment signal is received, the operational mode of air-conditioning is adjusted according to the control signal；
Receive the control signal of the control starting of air conditioner or stopping；
According to the control signal, the first valve (118) of outdoor recirculation assembly in the air-conditioning is controlled, the second valve (120), every Switching in the opening and closing of individual gear magnetic valve (150), and the changeover module (104) that is connected with the outdoor recirculation assembly of control The opening and closing of valve.
14. the balance method of air-conditioning pressure difference according to claim 13, it is characterised in that the tune received when the air-conditioning When entire signal is cooling signals, air-conditioning is switched into refrigeration mode, the first valve port (a) and the second valve port (b) of four-way valve (110) Connection, the 3rd valve port (c) of the four-way valve (110) is connected with the 4th valve port (d)；
If the control signal is enabling signal, first valve (118), second valve (120), the switching valve are opened And each gear magnetic valve (150)；
When unlatching first valve (118), second valve (120), the switching valve and each gear magnetic valve (150) when the first delay time after is more than the first preset time, close first valve (118), second valve (120), The switching valve and each gear magnetic valve (150), open compressor (108)；
If the control signal is stop signal, the compressor (108) is closed, after the compressor (108) is closed When second delay time is more than second preset time, opens first valve (118), second valve (120), described cut Change valve and each gear magnetic valve (150).
15. the balance method of air-conditioning pressure difference according to claim 13, it is characterised in that the tune received when the air-conditioning Entire signal is that when heating signal, air-conditioning is switched into heating mode, the first valve port (a) and the 3rd valve port (c) of four-way valve (110) Connection, the second valve port (b) of the four-way valve (110) is connected with the 4th valve port (d)；
If the control signal is enabling signal, first valve (118), second valve (120), the switching valve are opened And each gear magnetic valve (150)；
When unlatching first valve (118), second valve (120), the switching valve and each gear magnetic valve (150) when the first delay time after is more than the first preset time, close first valve (118), second valve (120), The switching valve and each gear magnetic valve (150), open compressor (108)；
If the control signal is stop signal, the compressor (108) is closed, it is determined that closing after the compressor (108) The second delay time, when second delay time is more than second preset time, open first valve (118), Second valve (120), the switching valve and each gear magnetic valve (150).
16. the balance method of air-conditioning pressure difference according to claim 13, it is characterised in that the tune received when the air-conditioning When entire signal is hybrid refrigeration signal, the air-conditioning is switched into hybrid refrigeration pattern, the first of the four-way valve (110) is connected Valve port (a) and the second valve port (b), connect the 3rd valve port (c) and the 4th valve port (d) of the four-way valve (110)；
If the control signal is enabling signal, first valve (118), second valve (120), the switching valve are opened And each gear magnetic valve (150)；
When unlatching first valve (118), second valve (120), the switching valve and each gear magnetic valve (150) when the first delay time after is more than the first preset time, close first valve (118), second valve (120), The switching valve and each gear magnetic valve (150), open compressor (108)；
If the control signal is stop signal, the compressor (108) is closed, after the compressor (108) is closed When second delay time is more than second preset time, opens first valve (118), second valve (120), described cut Valve and at least one described gear magnetic valve (150) are changed, wherein opening the quantity of the gear magnetic valve (150) less than described The total quantity of gear magnetic valve (150).
17. the balance method of air-conditioning pressure difference according to claim 13, it is characterised in that the tune received when the air-conditioning When entire signal is that mixing heats signal, the air-conditioning is switched into mixing heating mode, the first of the four-way valve (110) is connected Valve port (a) and the 3rd valve port (c), connect the second valve port (b) and the 4th valve port (d) of the four-way valve (110)；
If the control signal is enabling signal, first valve (118), second valve (120), the switching valve are opened And each gear magnetic valve (150)；
When unlatching first valve (118), second valve (120), the switching valve and each gear magnetic valve (150) when the first delay time after is more than the first preset time, close first valve (118), second valve (120), The switching valve and each gear magnetic valve (150), open compressor (108)；
If the control signal is stop signal, the compressor (108) is closed, it is determined that closing after the compressor (108) The second delay time, when second delay time is more than second preset time, open first valve (118), Second valve (120), the switching valve and each gear magnetic valve (150).
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