CN109631374A - A kind of refrigeration system with novel double-flow micro-channel evaporator - Google Patents
A kind of refrigeration system with novel double-flow micro-channel evaporator Download PDFInfo
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- CN109631374A CN109631374A CN201811471159.6A CN201811471159A CN109631374A CN 109631374 A CN109631374 A CN 109631374A CN 201811471159 A CN201811471159 A CN 201811471159A CN 109631374 A CN109631374 A CN 109631374A
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- refrigerant
- channel evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明公开了一种具有新型双流程微通道蒸发器的制冷系统，包括压缩机、油分离器、冷凝器、电磁阀、热力膨胀阀和双流程微微通道蒸发器；压缩机顶部的制冷剂出口通过所述油分离器与所述冷凝器左端上部的制冷剂入口相连通；所述冷凝器右端下部的制冷剂出口通过所述电磁阀与所述热力膨胀阀的入口相连通；所述热力膨胀阀的出口与所述双流程微通道蒸发器右端下部的制冷剂供液管相连通；所述双流程微通道蒸发器右端上部的制冷剂出口与所述压缩机底部的制冷剂入口相连通。本发明可以有效解决制冷系统中微通道蒸发器存在的微通道内气液两相流动相互干扰的问题，保证微通道蒸发器的换热性能，进而提升制冷系统的整体制冷效果。
The invention discloses a refrigeration system with a novel dual-flow micro-channel evaporator, comprising a compressor, an oil separator, a condenser, a solenoid valve, a thermal expansion valve and a dual-flow micro-channel evaporator; a refrigerant outlet on the top of the compressor The oil separator is communicated with the refrigerant inlet at the upper left end of the condenser; the refrigerant outlet at the lower right end of the condenser is communicated with the inlet of the thermal expansion valve through the solenoid valve; the thermal expansion valve The outlet of the valve is communicated with the refrigerant liquid supply pipe at the lower right end of the dual-flow microchannel evaporator; the refrigerant outlet at the upper right end of the dual-flow microchannel evaporator is communicated with the refrigerant inlet at the bottom of the compressor. The invention can effectively solve the problem of mutual interference of gas-liquid two-phase flow in the microchannel existing in the microchannel evaporator in the refrigeration system, ensure the heat exchange performance of the microchannel evaporator, and further improve the overall refrigeration effect of the refrigeration system.
Description
Technical field
The present invention relates to refrigeration technology fields, more particularly to a kind of refrigeration with novel double-flow micro-channel evaporator
System.
Background technique
Currently, the evaporator in refrigeration system is mostly the classes such as bushing type evaporator, shell-and-tube evaporator, finned evaporator
There are the disadvantages such as refrigerant charge is big, processing consumable quantity is big, heat exchange efficiency is low in type, the evaporator of these types.And and this
Formation obviously compares, micro-channel evaporator as a kind of New Evaporator, with it is small in size, light-weight, use refrigeration
The advantages that agent is few, good effect of heat exchange, therefore expanded in recent years it is applied to air conditioner refrigerating field.
But existing double-flow micro-channel evaporator, gas liquid two-phase flow interferes with each other in the microchannel having,
In, the refrigerant of gasification tends to interfere with liquid refrigerant flowing, to be easy to influence the heat transfer effect of micro-channel evaporator, causes
The heat exchange property of micro-channel evaporator is unstable, and then affects the refrigeration performance and stability of entire refrigeration system.
In addition, existing double-flow micro-channel evaporator, the liquid supply pipe on inlet header only has one, and refrigerant is by feed flow
After pipe enters double-flow micro-channel evaporator inlet header, due to the effect of gravity, refrigerant is in inlet header lower part and double fluid
The aggregation of journey micro-channel evaporator lower part flat tube, and top flat tube inner refrigerant is less, causes flow distribution of refrigerant uneven, thus
Heat transfer effect has been seriously affected, micro-channel heat exchanger has been even resulted in as evaporator at work, sharply declines there are performance
Problem.
Summary of the invention
In view of this, the purpose of the present invention is the big, heat exchange efficiencies for existing refrigeration system evaporator refrigerant charge
Low and micro-channel evaporator inner refrigerant assignment of traffic is uneven, biphase gas and liquid flow interferes with each other and reduces its heat transfer effect etc. and ask
Topic, and a kind of refrigeration system with novel double-flow micro-channel evaporator is provided, refrigerant charge can be substantially reduced, is mentioned
High refrigerant feed liquid uniformity, can be improved each flat tube liquid refrigerant flow velocity of new and effective micro-channel evaporator first pass,
Flow and uniformity make full use of the heat exchange area of micro-channel evaporator first pass, meanwhile, new and effective micro-channel evaporator
Air guide tubule gas is discharged in time, liquid enters in the microchannel of second procedure flat tube, can increase system in second procedure
Cryogen flow improves feed flow uniformity in refrigerant second procedure, makes full use of the heat exchange of the second procedure of micro-channel evaporator
Area, enhancing heat exchange, to improve micro-channel evaporator heat exchange efficiency, improve performance of refrigerant systems.Be conducive to widely apply,
It is of great practical significance.
For this purpose, the present invention provides a kind of refrigeration system with novel double-flow micro-channel evaporator, including compressor,
Oil eliminator, condenser, solenoid valve, heating power expansion valve and double-flow Micro Channel evaporator；
Wherein, the refrigerant outlet of the compressor top passes through the oil eliminator and the condenser left upper part
Refrigerant inlet is connected；
The entrance phase that the refrigerant outlet of condenser right end lower part passes through the solenoid valve and the heating power expansion valve
Connection；
The refrigerant feed liquid pipe phase of the outlet and the double-flow micro-channel evaporator right end lower part of the heating power expansion valve
Connection；
The refrigerant outlet on the double-flow micro-channel evaporator right end top and the refrigerant of the compression motor spindle enter
Mouth is connected.
Wherein, the double-flow micro-channel evaporator, spaced including left and right, hollow confluence collector and main collection
Pipe；
The confluence collector side opposite with main collector is connected by the flat tube of more cross direction profiles；
Point journey baffle of cross direction profiles is provided in the main collector, the main collector is divided into entrance by described point of journey baffle
Two cavitys of collector and outlet header, the inlet header are located at the lower section of outlet header；
The liquid separation baffle of cross direction profiles is provided in the inlet header, the inlet header is divided by the liquid separation baffle
Two cavitys of upper plenum and lower cavity；
The right upper portion of the inlet header is connected with upper liquid supply pipe, the lower right side of the inlet header and lower feed flow
Pipe is connected；
The upper liquid supply pipe is connected with the upper plenum of the inlet header, the lower liquid supply pipe and the inlet header
Lower cavity is connected；
The upper liquid supply pipe and lower liquid supply pipe are connected with the outlet of heating power expansion valve respectively；
The right upper portion of the outlet header is connected by a check valve with an exhaust pipe；
The top of the confluence collector is connected by an air guide tubule with the exhaust pipe；
The exhaust pipe is connected with the air entry of compressor.
Wherein, the confluence collector and main collector are vertically arranged and are parallel to each other.
Wherein, the flat tube is flat tube, has a plurality of microchannel in the flat tube.
Wherein, multiple fins are distributed in the two sides up and down of every flat tube respectively
Wherein, the air guide tubule is located at the surface of confluence collector.
Wherein, highly it is higher than the quantity for dividing the flat tube of journey baffle, the quantity less than height lower than the flat tube for dividing journey baffle.
Wherein, the height of outlet header is greater than the height of inlet header, and the volume of outlet header should also be greater than into
The volume of mouth collector.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the present invention provides one kind to have
The refrigeration system of novel double-flow micro-channel evaporator can be solved effectively micro- existing for micro-channel evaporator in refrigeration system
The problem of gas liquid two-phase flow interferes with each other in channel improves the heat transfer effect of micro-channel evaporator, guarantees micro-channel evaporator
Heat exchange property, and then promoted refrigeration system integrally cooling effect, be conducive to widely apply, have great production practices
Meaning.
In addition, inlet header refrigerant feed liquid uniformity can be improved in the present invention, inlet header overhead refrigerant stream is improved
Speed and flow, and then flow velocity, flow and the uniformity of all flat tube inner refrigerants of first pass in micro-channel evaporator are improved, it mentions
High micro-channel evaporator heat transfer effect further promotes the integrally cooling effect of refrigeration system.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the refrigeration system with novel double-flow micro-channel evaporator provided by the invention
Figure；
In figure, 1 is compressor, and 2 be oil eliminator, and 3 be condenser, and 4 be solenoid valve, and 5 be heating power expansion valve, and 6 be double fluid
Journey micro-channel evaporator；
In figure, 62 be lower liquid supply pipe, and 63 be upper liquid supply pipe, and 61 be inlet header；64 is thin for air guide for confluence collector, 66
Pipe, 65 be outlet header, and 69 is divide journey baffle, and 70 be liquid separation baffle；
67 be check valve, and 68 be exhaust pipe, and 71 be main collector, and 72 be flat tube, and 73 be fin.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to Fig. 1, the present invention provides a kind of refrigeration systems with novel double-flow micro-channel evaporator, including compression
Machine 1, oil eliminator 2, condenser 3, solenoid valve 4, heating power expansion valve 5 and double-flow Micro Channel evaporator 6；
Wherein, the refrigerant outlet (i.e. gaseous refrigerant outlet) at 1 top of the compressor by the oil eliminator 2 with
The refrigerant inlet of 3 left upper part of condenser is connected and (passes through pipeline)；
The entrance that the refrigerant outlet of the 3 right end lower part of condenser passes through the solenoid valve 4 and the heating power expansion valve 5
It is connected；
The refrigerant feed liquid pipe of the outlet and the 6 right end lower part of double-flow micro-channel evaporator of the heating power expansion valve 5
It is connected；
The refrigerant outlet on the 6 right end top of double-flow micro-channel evaporator and the refrigerant of 1 bottom of compressor
Entrance (i.e. gaseous refrigerant inlet) is connected.
In the present invention, the double-flow micro-channel evaporator 6, confluence collector spaced including left and right, hollow
64 and main collector 71；
The confluence collector 64 side opposite with main collector 71 is connected by the flat tube 72 of more cross direction profiles；
Point journey baffle 69 of cross direction profiles is provided in the main collector 71, it is described to divide journey baffle 69 by the main collector 71
It is divided into 65 two cavitys of inlet header 61 and outlet header, the inlet header 61 is located at the lower section of outlet header 65；
It should be noted that by dividing journey baffle 69, so that the inlet header 61 and outlet header 65 are mutually isolated, complete
It is complete to be spaced apart.
It is provided with the liquid separation baffle 70 of cross direction profiles in the inlet header 61, the liquid separation baffle 70 is by the entrance collection
Pipe 61 is divided into two cavitys of upper plenum and lower cavity；
The right upper portion of the inlet header 61 is connected with upper liquid supply pipe 63, the lower right side of the inlet header 61 with
Lower liquid supply pipe 62 is connected；
The upper liquid supply pipe 63 is connected with the upper plenum of the inlet header 61, the lower liquid supply pipe 62 and the entrance
The lower cavity of collector 61 is connected；
The upper liquid supply pipe 63 and lower liquid supply pipe 62 are connected with the outlet of heating power expansion valve 5 respectively；
The right upper portion of the outlet header 65 (is used as double-flow micro- by a check valve 67 and an exhaust pipe 68
The refrigerant outlet of microchannel evaporator 6) it is connected；Pass through the setting of check valve 67, it is ensured that gas (i.e. gaseous working medium)
One-way flow avoids flowing back.
The top of the confluence collector 64 is connected by an air guide tubule 66 with the exhaust pipe 68；
The exhaust pipe 68 is connected with the air entry of compressor 1.
It should be noted that the present invention is arranged air guide tubule on confluence collector, may be implemented in second procedure
Gas-liquid separation, gas enters air guide tubule, and liquid enters second procedure flat tube, while can increase second procedure inner refrigerant
Flow improves feed flow uniformity in refrigerant second procedure, makes full use of the heat exchange area of the second procedure of micro-channel evaporator,
So that heat exchange enhancing, so that micro-channel heat exchanger heat exchange property improves.
In addition, by the way that liquid separation baffle is arranged in inlet header, inlet header is divided into two up and down for the present invention
Cavity, working medium flow into two cavitys up and down of the inlet header from lower liquid supply pipe and upper liquid supply pipe simultaneously, so as to weaken weight
Influence of the power for refrigerant improves the office that refrigerant is gathered in more flat tubes of inlet header lower part and corresponding lower position
Face further improves the refrigeration of entire inlet header so that the overhead refrigerant flow velocity and flow of inlet header dramatically increase
The uniformity of agent distribution, meanwhile, the increase of flow velocity, so that heat exchange enhancing, so that the heat-exchange performance of entire micro-channel heat exchanger
It can significantly improve.
In the present invention, in specific implementation, the confluence collector 64 and main collector 71 are vertically arranged and are parallel to each other.
In the present invention, in specific implementation, the flat tube 72 is flat tube, has a plurality of microchannel in the flat tube 72
(for example, tens of subtle runners).Herein similarly to the prior art, it is not unfolded to describe.
In the present invention, in specific implementation, multiple fins 73 are distributed in the two sides up and down of every flat tube 72 respectively, with enhancing
The effect of heat exchange.
In the present invention, in specific implementation, for the present invention, because being used as evaporator, the inlet header 62
Length is less than the length of outlet header 65, that is to say, that the corresponding flat tube number of first pass should be less than the flat tube of second procedure
Number.
In the present invention, in specific implementation, in specific implementation, the air guide tubule 66 be located at confluence collector 64 just on
Side.
In specific implementation, the length and caliber of air guide tubule 66 can change, specifically according to specific heat exchange situation
Length is by formula: L=a*Qb+ c is determined；Specific bore is by formula: D=m*Qn+ e is determining,
Wherein, L is the length of air guide tubule, m；
Q is the mass flow of micro-channel evaporator, kg/s；
D is the bore of air guide tubule, m；
A, b, c, m, n, e can be fitted according to experiment parameters such as refrigerant mass fluxes, pressure difference and evaporating temperatures.
It should be noted that in the present invention, by dividing journey baffle 69, more flat tubes 72 to be divided to the flat tube for first pass
With the flat tube of second procedure, wherein be highly higher than and the flat tube 72 of journey baffle 69 is divided to be the flat tube of first pass, and be highly lower than and divide
The flat tube 72 of journey baffle 69 is the flat tube of second procedure.That is, being highly higher than the flat tube for dividing journey baffle 69 in specific implementation
72 quantity, the quantity less than height lower than the flat tube 72 for dividing journey baffle 69.
In the present invention, for micro-channel evaporator provided by the invention, by dividing journey baffle 69 by double-flow microchannel
The main collector 71 of evaporator is divided to for two processes, wherein inlet header 62 and the corresponding flat tube of inlet header 62 are evaporator the
One process；Outlet header 65 and the corresponding flat tube of outlet header 65 are evaporator second procedure.For the present invention, why it is arranged
For double-flow, the circulation length of refrigerant can be increased, so that being more conducive to the phase-change heat-exchange of refrigerant.
It should be noted that in the present invention, the height of the inlet header 62 is less than the height of outlet header 65, be because
It for this is used as evaporator, inlet header feed flow, therefore the refrigerant liquid inside the inlet header in first pass occupies
It is more, account for small volume；And the refrigerant in second procedure will largely gasify, volume becomes larger, so the corresponding flat tube of second procedure
Number is more, so that the height of outlet header 65 is greater than the height of inlet header 62, and the volume of outlet header 65 also should be big
In the volume of inlet header 62.
In the present invention, in specific implementation, the main function of inlet header 62 is: by lower liquid supply pipe 61 and upper liquid supply pipe 63
The refrigerant liquid of supply collects of short duration storage, and is supplied in the corresponding flat tube 72 of evaporator first pass.
In the present invention, in specific implementation, the main function of confluence collector 64 is: accepting the gas-liquid flowed out in first pass
Refrigerant is simultaneously supplied in the corresponding flat tube 72 of evaporator second procedure by two phase refrigerant.
In the present invention, in specific implementation, the main function of outlet header 65 is: supplying by refrigerant collecting and by refrigerant
It is given to exhaust pipe 68.
In the present invention, in specific implementation, the main function of exhaust pipe 68 is: the refrigerant export microchannel of gasification is steamed
Device is sent out, other equipment (compressor in such as refrigeration system) use is supplied to.
It should be noted that for the present invention, refrigerant uneven for existing double-flow micro-channel evaporator feed flow
Gas liquid two-phase flow is mutually dry in the problem of being gathered in inlet header lower part and lower part flat tube due to gravity and microchannel
The problem of disturbing.It is larger in particular for gas flow in second procedure in double-flow micro-channel evaporator, seriously reduce second
Liquid refrigerant feed flow uniformity can be improved in the technical issues of effective heat exchange area of journey, the present invention, at the same can be improved into
Mouth collector overhead refrigerant flow velocity and flow, and then improve novel double each flat tube liquid of liquid supply pipe micro-channel evaporator first pass
Refrigerant flow rates, flow and uniformity, while liquid enters in the microchannel of second procedure flat tube, can increase in second procedure
Refrigerant flow, improves feed flow uniformity in refrigerant second procedure, and the present invention can make full use of the of micro-channel evaporator
The heat exchange area of two processes makes full use of the heat exchange area of micro-channel evaporator, enhancing heat exchange, to improve micro-channel evaporator
Heat exchange efficiency.
In addition, also directed to existing micro-channel evaporator feed flow, uneven, refrigerant is due to gravity for the present invention
The technical issues of being gathered in inlet header lower part and lower part flat tube, and a kind of new technical solution is provided, the present invention can be improved
The uniformity of liquid refrigerant feed flow, while the flow velocity and flow of inlet header overhead refrigerant can be improved, and then improve whole
Liquid refrigerant flow velocity, flow and the uniformity of each flat tube, make full use of microchannel in the first pass of a micro-channel evaporator
The heat exchange area of evaporator, enhancing heat exchange, to improve micro-channel evaporator heat exchange efficiency.
In the present invention, in specific implementation, the heating power expansion valve 5 includes degree of superheat temperature sensing package, the degree of superheat sense
Thermometer bulb is mounted on 68 right end of exhaust pipe and the outboard tube at the place that is connected of air guide tubule 66 road.
It should be noted that degree of superheat temperature sensing package is one of important composition component of heating power expansion valve, it is used to detect micro-
The temperature of the refrigerant outlet of microchannel evaporator, and temperature information is converted into be transmitted to the valve of heating power expansion valve after pressure information
Body, to play the role of adjusting the refrigerant flow being flowed into micro-channel evaporator.
It should be noted that between the interconnected component of any two being connected by one section of pipeline for the present invention
It is logical, as shown in Figure 1.
For the present invention, it should be noted that will be from the low of double-flow micro-channel evaporator 6 by the compressor 1
The refrigerant gas of the refrigerant gas boil down to high pressure of pressure, then the refrigerant gas of high pressure continues to import in oil eliminator 2,
The lubricating oil separation that will be carried in higher pressure refrigerant gas by oil eliminator 2, then the refrigerant gas of high pressure is gone successively to
In condenser 3, for refrigerant by the heat transfer of itself to outside, refrigerant gas is cooled to the system of high pressure in condenser 3
Then cryogen liquid is the gas-liquid two-phase fluid of low pressure through solenoid valve 4 and the throttling of heating power expansion valve 5, refrigerant goes successively to double
In process micro-channel evaporator 6, external heat is absorbed in double-flow micro-channel evaporator 6 and realizes the system for flashing to low pressure
Refrigerant gas is finally reached the effect of refrigeration.
Wherein, the double-flow micro-channel evaporator 6 having for the present invention, main operational principle are as follows: working medium (such as liquid
Refrigerant) inlet header 61 flowed by lower liquid supply pipe 62 and upper liquid supply pipe 63, liquid separation baffle 70 is arranged in the intermediate of inlet header 61,
Working medium is entered in the flat tube 72 with microchannel by inlet header 61, and fin 73, work are laid outside the flat tube 72 with microchannel
Matter is entered in confluence collector 64 by the flat tube 72 with microchannel, and the working medium after heat exchange becomes gas-liquid two-phase state, is converged
Air guide tubule 66 is provided with right above collector 64, at this time, in confluence collector 64, due to the effect of gravity, gas on top,
Liquid is in lower part, and the entrance flat tube of air guide tubule and second procedure should reach pressure balance, so that gas flows into air guide tubule
In 66, entered in exhaust pipe 68 by air guide tubule 66；And the working medium of liquid is flowed into the flat tube of second procedure and is exchanged heat, warp
It crosses in the working medium after continuing heat exchange and then flow inlet and outlet collector 65, then working medium finally flows into exhaust pipe 68 by check valve 67,
Then the refrigerant gas of low pressure is conveyed to compressor 1.
Wherein, exhaust pipe 68 is provided with check valve 67, and effect is to guarantee the one-way flow of gas, avoids flowing back.In addition, entering
A point journey baffle 69 is disposed between mouth collector 61 and outlet header 65.The length and caliber of air guide tubule 66 are according to specific heat exchange feelings
Condition can change.Main collector 71 can be divided to for the structure of two processes by point journey baffle 69, the structure of first pass in lower part,
The structure of second procedure is on top.
In conclusion compared with prior art, it is provided by the invention a kind of with novel double-flow micro-channel evaporator
Refrigeration system, micro-channel evaporator can be discharged by the gas escape pipe being arranged at the top of micro-channel evaporator in time
The interior existing refrigerant to gasify, so that it is mutual effectively to solve gas liquid two-phase flow existing for micro-channel evaporator in refrigeration system
Interference problem avoids the refrigerant of gasification from hindering liquid refrigerant flowing, so that the refrigerant flow rates in micro-channel evaporator become
Greatly, to guarantee that the flow distribution of refrigerant in refrigeration system in micro-channel evaporator is uniform, changing for micro-channel evaporator is promoted
Thermal effect, and then the integrally cooling effect of refrigeration system is promoted, be conducive to widely promote and apply, there are great production practices
Meaning.
In addition, can pass through for the refrigeration system provided by the invention with novel double-flow micro-channel evaporator
The refrigerant to gasify in micro-channel evaporator is discharged in gas escape pipe in time, therefore can make full use of changing for micro-channel evaporator
Heat area reduces the pressure in micro-channel evaporator, improves micro-channel evaporator heat exchange efficiency, substantially reduces evaporator refrigerant
Charging amount.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of refrigeration system with novel double-flow micro-channel evaporator, which is characterized in that including compressor (1), oil
From device (2), condenser (3), solenoid valve (4), heating power expansion valve (5) and double-flow Micro Channel evaporator (6)；
Wherein, the refrigerant outlet at the top of the compressor (1) passes through the oil eliminator (2) and the condenser (3) left end
The refrigerant inlet on top is connected；
The refrigerant outlet of condenser (3) the right end lower part is entered by the solenoid valve (4) and the heating power expansion valve (5)
Mouth is connected；
The refrigerant feed liquid pipe of the outlet of the heating power expansion valve (5) and double-flow micro-channel evaporator (6) the right end lower part
It is connected；
The refrigerant outlet on double-flow micro-channel evaporator (6) the right end top and the refrigerant of the compressor (1) bottom
Entrance is connected.
2. as described in claim 1 with the refrigeration system of novel double-flow micro-channel evaporator, which is characterized in that described double
Process micro-channel evaporator (6), spaced including left and right, hollow confluence collector (64) and main collector (71)；
Confluence collector (64) side opposite with main collector (71) is connected by the flat tube (72) of more cross direction profiles；
Point journey baffle (69) of cross direction profiles is provided in the main collector (71), it is described to divide journey baffle (69) by the main collector
(71) it is divided into (65) two cavitys of inlet header (61) and outlet header, the inlet header (61) is located at outlet header (65)
Lower section；
It is provided with the liquid separation baffle (70) of cross direction profiles in the inlet header (61), the liquid separation baffle (70) is by the entrance
Collector (61) is divided into two cavitys of upper plenum and lower cavity；
The right upper portion of the inlet header (61) is connected with upper liquid supply pipe (63), the lower right side of the inlet header (61)
It is connected with lower liquid supply pipe (62)；
The upper liquid supply pipe (63) is connected with the upper plenum of the inlet header (61), the lower liquid supply pipe (62) with it is described enter
The lower cavity of mouth collector (61) is connected；
The upper liquid supply pipe (63) and lower liquid supply pipe (62) are connected with the outlet of heating power expansion valve (5) respectively；
The right upper portion of the outlet header (65) is connected by a check valve (67) with an exhaust pipe (68)；
The top of confluence collector (64) is connected by an air guide tubule (66) with the exhaust pipe (68)；
The exhaust pipe (68) is connected with the air entry of compressor (1).
3. as claimed in claim 2 with the refrigeration system of novel double-flow micro-channel evaporator, which is characterized in that the remittance
Adfluxion pipe (64) and main collector (71) are vertically arranged and are parallel to each other.
4. as claimed in claim 2 with the refrigeration system of novel double-flow micro-channel evaporator, which is characterized in that described flat
Managing (72) is flat tube, has a plurality of microchannel in the flat tube (72).
5. as claimed in claim 2 with the refrigeration system of novel double-flow micro-channel evaporator, which is characterized in that every flat
Multiple fins (73) are distributed in the two sides up and down of pipe (72) respectively.
6. as claimed in claim 2 with the refrigeration system of novel double-flow micro-channel evaporator, which is characterized in that described to lead
Gas tubule (66) is located at the surface of confluence collector (64).
7. the refrigeration system with novel double-flow micro-channel evaporator as described in any one of claim 2 to 6, feature
It is, is highly higher than the quantity for dividing the flat tube (72) of journey baffle (69), less than height lower than the flat tube (72) for dividing journey baffle (69)
Quantity.
8. the refrigeration system with novel double-flow micro-channel evaporator as described in any one of claim 2 to 6, feature
It is, the height of outlet header (65) is greater than the height of inlet header (62), and the volume of outlet header (65) also should be big
Volume in inlet header (62).
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