CN110470082A - Throttle part and cooling cycle system - Google Patents

Abstract

The invention proposes a kind of throttle parts, comprising: injector has mixed flow tube；Separator, injector are fixedly connected by mixed flow tube with the end of separator.According to the technical solution of the present invention, effectively multiple functions such as throttling, drainage pressurization and gas-liquid separation are focused on the same component, the compact for improving structure, saves space, improves integral strength, keep installation more efficient and convenient, evaporator outlet Fluid pressure is also improved, so as to reduce compressor pressure ratio, promotes the whole efficiency of refrigeration system, and throttle part of the invention uses tube manufacture, also significantly reduces cost.

Description

Throttle part and cooling cycle system

Technical field

The present invention relates to refrigeration technology fields, in particular to a kind of throttle part and a kind of cooling cycle system.

Background technique

Conventional steam compression-type refrigerating system includes compressor, condenser, restricting element, evaporator and gas-liquid separator etc. Main device and component.With the growing tension of energy form, the efficiency of steam compression type refrigeration circulation is required also increasingly It is high.The scheme of the relatively improving energy efficiency of mainstream focuses on reduction compressor power consumption at present, promotes the heat exchange effect of condenser/evaporator The directions such as rate.

And it throttles as the process for converting refrigeration working medium refrigeration potential in refrigeration cycle actual refrigerating capacity, a side Face realizes refrigeration working medium and is converted into low-temperature condition by the condition of high temperature, on the other hand also along with the pressure of largest portion in circulation The loss of energy uses if can lose this partial pressure, will effectively improve the efficiency of refrigeration system.The prior art is focused on Consider to use choke pressure loss in refrigeration cycle and drain the refrigerant gas of evaporator, with promoted refrigerant into Enter the pressure before compressor, reduces compressor power consumption.But these schemes fail will to throttle, drain, gas-liquid separation and backheat etc. Process conformity causes the operational reliability of system and structural compactness not high into same device, simultaneously as it is different, The processing and manufacturing of component is at high cost；As shown in Figure 1, the injector 30 ' of existing jet refrigeration circulation, gas-liquid separator 32 ' are each From isolated system unit, structure is not compact, increases the complexity of system operation, and processing and manufacturing component costs are excessively high, real It is low with property；Or as shown in Figure 2 and Figure 3, also have and to be integrated together injector 30 ' and separator 32 ', but injector 30 ' It is fixed on 32 ' side wall of separator, structure is complicated, and difficulty of processing is big.

Summary of the invention

The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.

In view of this, it is an object of the present invention to provide a kind of throttle parts.

It is another object of the present invention to provide a kind of cooling cycle systems.

To achieve the goals above, the technical solution of first aspect present invention provides a kind of throttle part, comprising: injection Device has mixed flow tube；Separator, injector are fixedly connected by mixed flow tube with the end of separator.

In the technical scheme, throttle part includes injector and separator, and injector passes through mixed flow tube and separator It is fixedly connected, the device for being integrally formed injector and separator, to will throttle, drainage is pressurized and a variety of function such as gas-liquid separation It can gather together, so that structure is become more compact, save space, improve integral strength, keep installation more efficient and convenient, System reliability of operation and structural compactness are improved, and shortens path of the fluid from injector to separator, to subtract The kinetic energy rejection in flow process is lacked.

Injector is fixed by the end of mixed flow tube and separator, also makes the axis of mixed flow tube closer to separator Axis reduces the possibility that the fluid that mixed flow tube is ejected sprays to separator sidewall, so as to reduce separator sidewall Pressure extends separator service life；The end of separator is generally plane, and separator sidewall is curved surface, is equally aperture, The difficulty of aperture is obviously low compared with aperture on curved surface in the plane, and especially when opening direction and machined surface out of plumb, difficulty is more Greatly, therefore, injector is fixed in the end of separator, also significantly reduces difficulty of processing, improves the accuracy of processing；And Relative to the technical solution for fixing mixed flow tube on side wall, the non-aperture of the side wall of the separator of the technical solution, so as to mention The intensity of High lateral wall, and the harmony of separator interior pressure is promoted, and then improve the anti-pressure ability of separator, it extends The service life of separator；Injector is fixed on separator end, can also reduce the ruler of throttle part radially in separator It is very little, to adapt to different application scenarios.

In the above-mentioned technical solutions, optionally, the axial direction of mixed flow tube is axial parallel with separator.

In the technical scheme, by setting axial parallel with separator for the axial direction of mixed flow tube, make from mixed flow tube The direction of motion of the fluid of ejection is pointing directly at the other end of separator, without the possibility to separator radial motion, from And the energy is saved, the effect of gas-liquid separation can also be promoted.

Specifically, when separator is placed in vertical direction, it is contemplated that specific gravity of gas is lighter, and liquid specific gravity is larger, out Liquid pipe is generally located on separator bottom, and mixed flow tube is fixed on separator upper end and axial direction and decoupler shaft are to parallel, thus The fluid that mixed flow tube sprays all sprays downwards, and the kinetic energy of fluid is completely converted into downward speed, and in acceleration of gravity Under effect, the liquid in fluid is allow to reach separator bottom with most fast speed, due also to the effect of acceleration of gravity, it can To save the part energy；Simultaneously as the axial direction of mixed flow tube and decoupler shaft, to parallel, the fluid that injector sprays is straight down Injection, the path that liquid therein is walked, relative to the axial direction of mixed flow tube and decoupler shaft to for not parallel setting, path It is shortest, therefore also shortens the time that liquid reaches separator bottom, improves separative efficiency；And the gas in fluid by It is lighter in specific gravity, start uplink after short distance being moved downwards, so as to fast implement gas-liquid separation, improves separation Efficiency；To parallel, the fluid for also spraying injector will not generate the side wall of separator for the axial direction of mixed flow tube and decoupler shaft Impact, and sprayed to lower section without radial motion after fluid ejection, it decreases after fluid sprays and is directly entered separator Muffler possibility, thus reduce short circuit possibility；If mixed flow tube and decoupler shaft, to not parallel, mixed flow tube is sprayed Fluid out will have radial speed, and reduce axial speed, thus after spraying fluid, it may be along separation The side wall of device spiral and under, reduce fluid reach separator bottom speed, thereby reduce the speed of gas-liquid separation；Together When, the high-velocity fluid of one side radial motion, which can be formed side wall, to be impacted, to reduce the service life of side wall, also adds stream Body flows to the distance of separator bottom, and another aspect fluid has radial speed, it is also possible to directly transport after causing fluid to spray It moves near the muffler of separator, causes fluid to be directly discharged from muffler, reduce the effect of gas-liquid separation.

In the above-mentioned technical solutions, further, injector includes: tee tube, has throttle, conduction part and mixed flow The axis collinear of portion, throttle and mixed flow portion, wherein mixed flow portion is fixedly and coaxially connected with mixed flow tube.

In the technical scheme, by the way that the tee tube with throttle, conduction part and mixed flow portion is arranged in injector, just On the injector in the function set that will be throttled, drain pressurization, the compact of structure and the stability of system operation are improved；Section The axis collinear in stream portion and mixed flow portion keeps structure more compact and installation easy to process；Coaxially fixation connects for mixed flow portion and mixed flow tube It connects, equally makes compact-sized, simple structure, and convenient for the gap between sealing mixed flow portion and mixed flow tube, reduce fluid leakage May, to improve system reliability of operation and stability；Mixed flow portion is also set not generate punching to side wall to the fluid of mixed flow tube It hits, fluid can reduce the unnecessary pressure loss with steady flow, greatly improve the fluid velocity that fluid enters separator.

In the above-mentioned technical solutions, further, injector further include: throttle pipe；End cap is positioned, tee tube is covered on Throttle end, positioning end cap are fixedly connected with throttle, wherein throttle pipe protrudes into throttle through positioning end cap.

In the technical scheme, in the throttle setting positioning end cap of tee tube, enter convenient for sealing the throttle of tee tube Mouthful, the pressure loss is reduced, and positioning end cover structure is simple, it is easy to process, it reduces costs, can also quickly carry out peace installation and dismantling It unloads, improves work efficiency；Throttle pipe protrudes into throttle through positioning end cap, produces after being throttled convenient for refrigerant by throttle pipe Raw high-velocity fluid, into injector interior, and the high-velocity fluid imported can drain the refrigerant gas flowed out from evaporator, rise To the effect of drainage pressurization；Meanwhile be also convenient for the installation of throttle pipe, throttle pipe in injector specific angle, built-in length, Position, can be by realizing through the angle of positioning end cap, penetration length, through position, and the installation for simplifying throttle pipe is fixed Position technique, improves work efficiency, and is also convenient for reinforcing throttle pipe and positions the sealing between end cap, reduces the pressure loss.

Throttle pipe preferably uses capillary, to improve the speedup effect that throttles.

In the above-mentioned technical solutions, further, mixed flow tube includes: contraction flow region, is connected to tee tube, along throttle to On the direction of mixed flow portion, the internal diameter of contraction flow region is gradually reduced；Enlarged portion is connected to contraction flow region, and the internal diameter of enlarged portion is along far from receipts The direction in contracting portion is gradually increased.

In the technical scheme, by the way that interconnected contraction flow region and enlarged portion are arranged in mixed flow tube, make in mixed flow tube Along throttle on the direction of mixed flow portion, the internal diameter of mixed flow tube is first gradually reduced, then is gradually increased, i.e., first shrinks and expand afterwards, just It can be mixed in mixed flow tube in the two fluids entered from throttle and conduction part, promote the pressure of the gas of evaporator outflow Power；Further, when high-velocity fluid sprays injector, the throttle pipe throttling for first passing through capillary production accelerates, and to from drawing The fluid that stream portion enters is drained, and is pressurized in the enlarged portion reduction of speed of mixed flow tube thereafter, is improved evaporator outlet Fluid pressure, According to experimental results, which can promote evaporator outlet Fluid pressure and be up to 18%, so as to reduce pressure Contracting machine pressure ratio promotes the whole efficiency of refrigeration system.

Wherein, the divergence ratio of the internal diameter of the enlarged portion of mixed flow tube ranges preferably from 1~3, the i.e. maximum inner diameter of enlarged portion Ratio range with the minimum diameter of enlarged portion is preferably 1~3.

In the above-mentioned technical solutions, further, the length of the enlarged portion of mixed flow tube is greater than the minimum diameter of mixed flow tube.

In the technical scheme, the length of the enlarged portion of mixed flow tube is greater than the minimum diameter of mixed flow tube, makes enlarged portion in narrow Direction that is elongated, and flowing along fluid, the internal diameter of enlarged portion are gradually increased, the two fluids for entering throttle and conduction part Can have time enough and space to carry out mixing and gas-liquid conversion in mixed flow tube, and improve mixed flow tube fluid and spray Speed, and then be more advantageous to and separate in the separator, improve separative efficiency.

Wherein, the length of enlarged portion is greater than 10 times of mixed flow tube minimum diameter.

In the above-mentioned technical solutions, optionally, mixed flow tube protrudes into separator, and it is big that mixed flow tube protrudes into the length in separator In the maximum inner diameter of the enlarged portion of mixed flow tube.

In the technical scheme, by the way that mixed flow tube to be set as protruding into separator, and the length protruded into is greater than mixed flow tube Enlarged portion maximum inner diameter, the muffler of the outlet and separator that allow mixed flow tube keeps enough distances, mixed to reduce Fluid in flow tube directly leads to the possibility of short circuit from muffler outflow after spraying, wherein mixed flow tube protrudes into the length in separator Degree is preferably 1.5~2.5 times of the maximum inner diameter of the enlarged portion of mixed flow tube.

In the above-mentioned technical solutions, optionally, throttle pipe protrudes into the internal diameter of one end in tee tube, is greater than throttle pipe three The internal diameter of one end outside siphunculus.

In the technical scheme, throttle pipe is set greater than by the internal diameter of the one end for protruding into throttle pipe in tee tube to exist The internal diameter of the internal diameter of one end outside tee tube, i.e. throttle pipe outlet is larger, can be with lifting fluid speed, and then promotes drainage effect Fruit.

Specifically, the internal diameter of throttle pipe can be gradually increased along the direction that fluid flows, i.e., from throttle pipe in tee tube One end in outer one end to tee tube, internal diameter are gradually increased；Or the internal diameter of throttle pipe is constant, only close in tee tube Flare expands at one end.

In the above-mentioned technical solutions, optionally, injector further include: positioning end cap is covered on the throttle end of tee tube Portion, positioning end cap are fixedly connected with throttle；Throttle orifice axially penetrates through positioning end cap along positioning end cap.

In the technical scheme, by covering setting throttle orifice in positioning end, and the length of throttle orifice is made to reach default model It encloses, then throttle pipe can be substituted by throttle orifice, reduce component, simplify structure, simplify processing technology and mounting process, Working efficiency is improved, is reduced costs.

In the above-mentioned technical solutions, further, separator includes: muffler, is set to the same of separator with mixed flow tube End；Outlet tube, the other end for being set to separator opposite with muffler.

In the technical scheme, muffler and outlet tube is respectively set by the both ends in separator, is convenient for gas-liquid separation, Specifically, general muffler is located above, and outlet tube is located below when separator is placed vertically, the lesser gas of specific gravity It can be discharged from the muffler of top, and the biggish liquid of specific gravity is flowed out from outlet tube naturally, so that separative efficiency is improved, Gravity natural separation gas-liquid two-phase is also utilized, the energy is saved.

In the above-mentioned technical solutions, optionally, the internal diameter of one end that separator is connect with muffler is constant, separator with go out The internal diameter of one end of liquid pipe connection, is gradually reduced along muffler to the direction of outlet tube.

In the technical scheme, one end internal diameter that separator is connect with muffler is constant, makes the upper semisection of separator in circle Tubular, gas-liquid two-phase have enough spaces to be separated；The internal diameter of one end that separator is connect with outlet tube, along muffler to out Liquid pipe direction is gradually reduced, and the lower semisection of separator is made to have certain gradient, under the effect of gravity convenient for the liquid after separation, It concentrates and is discharged to outlet tube, improve the speed of fluid discharge, also reduce the possibility of residual in the separator, improve the benefit of fluid With rate,

Wherein, the draw ratio of separator cylindrical shape upper semisection is preferably 2~5.

In any of the above-described technical solution, optionally, throttle pipe and/or positioning end cap are made of metal tube, injection The rest part and separator of device are made of plastic pipe.

In the technical scheme, throttle pipe or positioning end cap are made of metal tube, and the intensity of component can be improved, subtract Less because of the possibility that fluid velocity is fast or pressure causes greatly pipe fitting to be destroyed, system reliability of operation and stability are improved；Injection Device rest part and separator are made of plastic pipe, convenient for production, can also save cost.

In any of the above-described technical solution, optionally, the outer wall of throttle part is equipped with insulating layer.

In the technical scheme, the outer wall of throttle part is equipped with insulating layer, it is possible to reduce the heat of refrigerant and external environment Exchange after entering evaporator, can be evaporated with lower temperature and be changed so that refrigerant be made to keep its lower temperature Heat achievees the purpose that cooling.

The technical solution of second aspect of the present invention provides a kind of cooling cycle system, including appointing in above-mentioned first aspect The throttle part of one technical solution.

In the technical scheme, by using the throttle part of any of the above-described technical solution, to be provided with above-mentioned skill Whole beneficial effects of art scheme, details are not described herein.

Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.

Detailed description of the invention

Fig. 1 shows the schematic diagram of the cooling cycle system of the prior art；

Fig. 2 shows the schematic diagrames of the throttle part of the prior art；

Fig. 3 shows the schematic top plan view of Fig. 2；

Fig. 4 shows the schematic diagram of the throttle part of embodiment according to the present invention；

Fig. 5 shows the schematic diagram of the cooling cycle system of embodiment according to the present invention；

Wherein, corresponding relationship of the Fig. 1 into Fig. 3 between appended drawing reference and component names are as follows:

30 ' injectors, 32 ' separators；

Corresponding relationship of the Fig. 4 into Fig. 5 between appended drawing reference and component names are as follows:

1 compressor, 2 condensers, 3 throttle parts, 30 injectors, 300 throttles, 302 mixed flow portions, 303 mixed flow tubes, 3030 Contraction flow region, 3032 enlarged portions, 304 conduction parts；306 positioning end caps, 308 throttle pipes, 32 separators, 320 mufflers, 322 go out liquid Pipe, 4 evaporators, 5 regenerators.

Specific embodiment

It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.

According to some embodiments of the present invention referring to Fig. 4 to Fig. 5 description.

Embodiment 1

As shown in figure 4, the throttle part 3 of the one embodiment proposed according to the present invention, comprising: the injector being fixedly connected 30 and separator 32, the main body of injector 30 is three with interconnected throttle 300, conduction part 304 and mixed flow portion 302 Siphunculus, the end inlets of the throttle 300 on tee tube are fixedly connected with positioning end cap 306, and positioning end cap 306 is covered on It on 300 end of throttle, and positions end cap 306 and is run through by a throttle pipe 308, throttle pipe 308 is protruded by positioning end cap 306 In throttle 300；A mixed flow tube 303,303 one end of mixed flow tube and the fixed company of mixed flow portion 302 are coaxially fixed in mixed flow portion 302 It connects, the other end protrudes into separator 32 from the end of separator 32, and injector 30 passes through the end of mixed flow tube 303 and separator 32 It is fixedly connected；Separator 32 is equipped with muffler 320 and outlet tube 322, and muffler 320 and mixed flow tube 303 are set to separator 32 Same end, outlet tube 322 and muffler 320 are relatively set to the other end of separator 32；Above-mentioned each component is all made of Pipe fitting processing and fabricating, wherein throttle pipe 308 uses capillary, and throttle pipe 308 and positioning end cap 306 use metal material, with The intensity of throttle pipe 308 is improved, the possibility that high velocity fluid strikes cause throttle pipe 308 to destroy is reduced, remaining part can use The pipe fitting of metal material can also use the pipe fitting of plastic material, to reduce material cost and difficulty of processing, and in throttle part 3 outer wall is equipped with insulating layer.

By the way that the injector 30 of above structure to be fixedly connected with separator 32, injector 30 and separator 32 is made to become one The device of body makes structure become more to step up so that the multiple functions such as throttling, drainage pressurization and gas-liquid separation be gathered together It gathers, improves integral strength, keep installation more efficient and convenient, improve system reliability of operation and structural compactness, and contract Short fluid saves the kinetic energy of fluid from injector 30 to the path of separator 32, reduces the kinetic energy damage in flow process It loses.

Further, injector 30 is fixed by mixed flow tube 303 and the end of separator 32, makes the axis of mixed flow tube 303 Closer to the axis of separator 32, reduce the possibility that the fluid that mixed flow tube 303 is ejected sprays to 32 side wall of separator, from And can reduce the pressure of 32 side wall of separator, extend 32 service life of separator；The end of separator 32 is generally plane, and The side wall of separator 32 is usually curved surface, is equally aperture, and the difficulty of aperture is obviously low compared with aperture on curved surface in the plane, especially , when opening direction and machined surface out of plumb, difficulty is bigger, and therefore, injector 30 is fixed in the end of separator 32 for it, also big Width reduces difficulty of processing and installation difficulty, improves the accuracy of processing；And it, can due to the non-aperture of the side wall of separator 32 To improve the intensity of side wall, and the harmony of 32 internal pressure of separator is promoted, and then improve the resistance to compression energy of separator 32 Power extends the service life of separator 32；Injector is fixed on separator end, can also reduce throttle part in separator Size radially, to adapt to different application scenarios.

Further, the axial direction of mixed flow tube 303 is preferably axial parallel with separator 32, the stream that mixed flow tube 303 sprays The direction of motion of body is pointing directly at the other end of separator 32, without the possibility to 32 radial motion of separator, to save The energy has been saved, the effect of gas-liquid separation can also be promoted, meanwhile, it is arranged in parallel, fluid can also be made to spray from mixed flow tube 303 Afterwards, fluid is that straight line is moved to 30 bottom of separator, therefore the distance for reaching 30 bottom of separator is most short, to improve separation effect Rate.

Specifically, when separator 32 is placed in vertical direction, it is contemplated that specific gravity of gas is lighter, and liquid specific gravity is larger, Outlet tube 322 is generally located on 32 bottom of separator, and mixed flow tube 303 is fixed on 32 upper end of separator and axial and separator 32 Axial parallel, so that the fluid that mixed flow tube 303 sprays all sprays downwards, the kinetic energy of fluid is completely converted into downward speed Degree, and under acceleration of gravity effect, so that the liquid in fluid is reached 32 bottom of separator with most fast speed, due also to The effect of acceleration of gravity can save the part energy；And the gas in fluid can move downwards short since specific gravity is lighter Start uplink after distance, so as to fast implement gas-liquid separation, improves separative efficiency, and will not be to the side of separator 32 Wall generates impact, and fluid is sprayed to lower section without radial motion after spraying, and decreases after fluid sprays and is directly entered separation The possibility of the muffler 320 of device 32, to reduce the possibility of short circuit.

Mixed flow tube 303 and separator 32 are axial parallel, protrude into mixed flow tube 303 point perpendicular to the end of separator 32 From device 32, so that the axial direction of the end aperture of separator 32 can also be axial parallel with separator 32, so as to further drop Low difficulty of processing, and then processing cost is reduced, the sealing effect of mixed flow tube 303 Yu separator 32 can also be improved.

If mixed flow tube 303 is axial not parallel with separator 32, the fluid that mixed flow tube 303 is sprayed will have radial direction Speed, and reduce axial speed, thus after spraying fluid, may spiral along the side wall of separator 32 and under, The speed that fluid reaches 32 bottom of separator is reduced, the speed of gas-liquid separation is thereby reduced；Meanwhile one side radial motion High-velocity fluid can to side wall formed impact, to reduce the service life of side wall, also add fluid and flow to 30 bottom of separator The distance in portion, another aspect fluid have radial speed, it is also possible to which first motion is to separator 32 after causing fluid to spray Near muffler 320, causes fluid to be directly discharged from muffler 320, reduce the effect of gas-liquid separation.

Mixed flow tube 303 is fixedly and coaxially connected with mixed flow portion 302, makes compact-sized, simple structure, and convenient for sealing mixed flow portion The possibility of fluid leakage is reduced, to improve system reliability of operation and stability in gap between 302 and mixed flow tube 303； Mixed flow portion 302 is also set not generate impact to side wall to the fluid of mixed flow tube 303, fluid can be with steady flow, and it is unnecessary to reduce The pressure loss, greatly improve the fluid velocity that fluid enters separator 32.

Further, mixed flow tube 303 includes interconnected contraction flow region 3030 and enlarged portion 3032, along the side of fluid flowing To that is, from throttle 300 to mixed flow portion 302 again on the direction of separator 32, the internal diameter of contraction flow region 3030 is gradually reduced, expansion The internal diameter in portion 3032 is gradually increased along the direction far from contraction flow region 3030, is gradually reduced the internal diameter of mixed flow tube 303 first, then gradually Increase, i.e., first shrink and expand afterwards, the two fluids convenient for entering from throttle 300 and conduction part 304 can be in mixed flow tube 303 Mixing promotes the pressure for the gas that evaporator 4 flows out, more specifically, first passing through capillary when high-velocity fluid sprays injector 30 The throttle pipe of pipe production, which throttles, to be accelerated, and is drained to the fluid entered from conduction part 304, thereafter in the expansion of mixed flow tube 303 The pressurization of 3032 reduction of speed of portion is opened, so that evaporator outlet Fluid pressure is improved, according to experimental results, the embodiment of the present invention 4 outlet fluid pressure of evaporator can be promoted and be up to 18%, so as to reduce 1 pressure ratio of compressor, promote the whole of refrigeration system Physical efficiency effect, wherein the divergence ratio of the internal diameter of enlarged portion 3032 ranges preferably from 1~3.

Further, the length of enlarged portion 3032 is greater than 10 times of 303 minimum diameter of mixed flow tube, to make enlarged portion 3032 In thin-and-long, and the direction flowed along fluid, the internal diameter of enlarged portion 3032 are gradually increased, and make throttle 300 and conduction part 304 The two fluids of entrance can have time enough and space to carry out mixing and gas-liquid conversion, Yi Jiti in mixed flow tube 303 The speed and increase pressure that fluid sprays in high mixed flow tube 303, and then be more advantageous to and separated in separator 32, improve separation effect Rate.

Optionally, mixed flow tube 303 protrudes into separator 32, and it is mixed flow that mixed flow tube 303, which protrudes into the length in separator 32, 1.5~2.5 times of the maximum inner diameter of the enlarged portion 3032 of pipe 303, that is, the length protruded into are 3032 exit internal diameter of enlarged portion 1.5~2.5 times, so that the muffler 320 of the outlet of mixed flow tube 303 and separator 32 can keep enough distances, to reduce Fluid in mixed flow tube 303 directly flows out the possibility for leading to short circuit after spraying from muffler 320；Mixed flow tube 303 protrudes into separator In 32, make 30 decentralization of injector, reduce length of the mixed flow tube 303 outside separator 32, reduces 30 unstability of injector Possibility improve the reliability and stability of system work to improve the fixed stability of injector 30 and separator 32.

Throttle pipe 308 is preferably capillary, to improve restriction effect；Further, the axial direction of throttle pipe 308 preferably with Axial parallel, the impact with reduction to side wall of the throttle 300 of tee tube, the axial velocity of lifting fluid, and then promoted and drawn Flow the effect of pressurization.Throttle pipe 308 is fixedly connected by positioning end cap 306 with throttle 300, convenient for sealing the throttling of tee tube 300 entrance of portion, reduce the pressure loss, and position 306 structure of end cap it is simple, it is easy to process, reduce costs, can also quickly into Row installation and removal, improve work efficiency；Throttle pipe 308 protrudes into throttle 300, convenient for that will be throttled by throttle pipe 308 Fluid afterwards imports inside injector 30, and the high-velocity fluid imported can drain the refrigerant gas flowed out from evaporator 4, rises To the effect of drainage pressurization.

Optionally, the exit inside diameter of throttle pipe 308 is slightly expanded, i.e., the internal diameter in exit is than in throttle pipe 308 itself Diameter is slightly larger, and flare expands；It is outlet end that throttle pipe 308, which protrudes into one end in tee tube, therefore could also say that throttle pipe 308 internal diameters for protruding into one end in tee tube are greater than the internal diameter of the one end of throttle pipe 308 outside tee tube, to make fluid velocity Accelerate, and then is obviously improved drainage effect.

The exit inside diameter of throttle pipe 308 is expanded, and the internal diameter for being also possible to throttle pipe is gradually increased along the direction that fluid flows, One end in one end to tee tube i.e. from throttle pipe outside tee tube, internal diameter are gradually increased, and can equally play quickening flow velocity, Promote the effect of drainage effect.

In the present embodiment, the upper semisection that separator 32 is connected to muffler 320 is cylindrical, and draw ratio is preferably 2 ~5, so that gas-liquid two-phase has enough spaces to be separated；The internal diameter of one end that separator 32 is connect with outlet tube 322, edge are returned Tracheae 320 is gradually reduced to 322 direction of outlet tube, keeps the lower semisection of separator 32 tapered with certain gradient, thus Under the effect of gravity convenient for the liquid after separation, it concentrates and is discharged to outlet tube 322, improve the speed of fluid discharge, also reduce residual The possibility in separator 32 is stayed in, the utilization rate of fluid is improved.

Throttle pipe 308 and/or positioning end cap 306 are made of metal tube, the rest part of injector 30 and separation Device 32 is made of plastic pipe.

Throttle pipe 308 or positioning end cap 306 are made of metal tube, and the intensity of component can be improved, and are reduced because of fluid The possibility that speed is fast or pressure causes greatly pipe fitting to be destroyed improves system reliability of operation and stability；Injector 30 remaining Part and separator 32 are made of plastic pipe, and raw material is easy to get, convenient for production, can also substantially save cost, more traditional Ejector refrigeration component costs reduce 50% or more.

The axis of the conduction part 304 of the present embodiment is vertical with the axis of throttle 300, mixed flow portion 302, therefore can be direct Using conventional tee tube, it is not required to additional customized, is reduced costs, installation and replacement are also convenient for.

The throttle part 3 of the present embodiment is additionally provided with insulating layer in its outer wall, it is possible to reduce the heat of refrigerant and external environment Exchange after entering evaporator, can be evaporated with lower temperature and be changed so that refrigerant be made to keep its lower temperature Heat achievees the purpose that cooling.

Embodiment 2

Throttle part 3 according to an embodiment of the invention, is modified based on embodiment 1.Not with embodiment 1 It is with place, with throttle orifice instead of throttle pipe 308.

Specifically, offer throttle orifice on the positioning end cap 306 of the present embodiment, with throttle orifice instead of throttle pipe 308, To save component, reduces component, simplifies structure, simplify processing technology and mounting process, improve working efficiency, It reduces costs.It, can be by thickening positioning end cap 306 to lengthen throttle orifice in view of the length of throttle pipe 308, it can also be with The position for individually thickening throttle orifice keeps positioning 306 surface of end cap convex in the position of throttle orifice, to increase throttle orifice Length.

The present embodiment and embodiment 1 another difference is that, mixed flow tube 303 does not protrude into separator 32, but It is in the same horizontal position with muffler 320, to simplify structure.

The cone structure that the lower semisection that separator 32 is connected with outlet tube 322 does not use internal diameter to be gradually reduced yet, but it is same Upper semisection equally uses cylindrical structure, to keep separator 32 whole cylindrical, simplifies the structure of separator 32, reduces and add Work process, reduces difficulty of processing, to further reduce costs, also improves the globality of separator 32.

The present embodiment also differ in that with embodiment 1, the axis and throttle 300, mixed flow portion of conduction part 304 302 axis out of plumb, but be in certain acute angle or obtuse angle, so as to as needed, setting 304 axis of conduction part and section The angle of the axis of stream portion 300 or mixed flow portion 302 is drained with better realization and is pressurized.

Embodiment 3

As shown in figure 5, the cooling cycle system of one embodiment proposed by the present invention, using any of the above-described a embodiment Throttle part 3, comprising: compressor 1, condenser 2, throttle part 3, evaporator 4, regenerator 5, throttle part 3 are placed in circulation Between regenerator 5 and evaporator 4, refrigerant realizes multiple mistakes such as throttling, drainage pressurization and gas-liquid separation in the throttle part 3 Journey.

By using the throttle part 3 of any one above-mentioned embodiment, so that the whole for being provided with above-described embodiment is beneficial Effect, details are not described herein.

The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, according to the technical solution of the present invention, effectively will Multiple functions such as throttling, drainage pressurization and gas-liquid separation focus on the same component, improve the compact of structure, save Space improves integral strength, keeps installation more efficient and convenient, improves evaporator outlet Fluid pressure, also so as to subtract Small compressor pressure ratio, promotes the whole efficiency of refrigeration system, and throttle part of the invention is mainly by using tube manufacture, Also significantly reduce cost.

In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as indicating Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ", The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, being also possible to can Dismantling connection, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.For this For the those of ordinary skill in field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In description of the invention, it is to be understood that the instructions such as term " on ", "lower", "left", "right", "front", "rear" Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched It states, rather than the device or unit of indication or suggestion meaning must have specific direction, be constructed and operated in a specific orientation, It is thus impossible to be interpreted as limitation of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with Suitable mode combines.

These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (14)

1. a kind of throttle part characterized by comprising

Injector has mixed flow tube；

Separator, the injector are fixedly connected by the mixed flow tube with the end of the separator.

2. throttle part according to claim 1, which is characterized in that the axis of the axial direction of the mixed flow tube and the separator To parallel.

3. throttle part according to claim 2, which is characterized in that the injector includes:

Tee tube, have throttle, conduction part and mixed flow portion, the axis collinear of the throttle and the mixed flow portion,

Wherein, the mixed flow portion is fixedly and coaxially connected with the mixed flow tube.

4. throttle part according to claim 3, which is characterized in that the injector further include:

Throttle pipe；

End cap is positioned, the throttle end of the tee tube is covered on, the positioning end cap is fixedly connected with the throttle,

Wherein, the throttle pipe protrudes into the throttle through the positioning end cap.

5. throttle part according to claim 4, which is characterized in that the mixed flow tube includes:

Contraction flow region is connected to the tee tube, along the throttle on the direction of the mixed flow portion, the contraction flow region it is interior Diameter is gradually reduced；

Enlarged portion is connected to the contraction flow region, and the internal diameter of the enlarged portion is gradually increased along the direction far from the contraction flow region.

6. throttle part according to claim 5, which is characterized in that the length of the enlarged portion of the mixed flow tube is greater than described The minimum diameter of mixed flow tube.

7. throttle part according to claim 6, which is characterized in that the mixed flow tube protrudes into the separator, described Mixed flow tube protrudes into maximum inner diameter of the length in the separator greater than the enlarged portion of the mixed flow tube.

8. 4 throttle part according to claim, which is characterized in that the throttle pipe protrudes into one end in the tee tube Internal diameter, greater than the internal diameter of the one end of the throttle pipe outside the tee tube.

9. throttle part according to claim 3, which is characterized in that the injector further include:

End cap is positioned, is covered on the throttle end of the tee tube, the positioning end cap is fixedly connected with the throttle；

Throttle orifice axially penetrates through the positioning end cap along the positioning end cap.

10. throttle part according to any one of claim 1 to 9, which is characterized in that the separator includes:

Muffler is set to the same end of the separator with the mixed flow tube；

Outlet tube, the other end for being set to the separator opposite with the muffler.

11. throttle part according to claim 10, which is characterized in that the separator connect with the muffler one The internal diameter at end is constant, the internal diameter of one end that the separator is connect with the outlet tube, along the muffler to the outlet tube Direction be gradually reduced.

12. the throttle part according to any one of claim 4-11, which is characterized in that

The throttle pipe and/or the positioning end cap are made of metal tube, the rest part of the injector and described Separator is made of plastic pipe.

13. the throttle part according to any one of claim 4-11, which is characterized in that on the outer wall of the throttle part Equipped with insulating layer.

14. a kind of cooling cycle system, which is characterized in that including right ask any one of 1 to 13 described in throttle part.