CN105387652B - Liquid equalizing plate of flooded evaporator and flooded evaporator - Google Patents
Liquid equalizing plate of flooded evaporator and flooded evaporator Download PDFInfo
- Publication number
- CN105387652B CN105387652B CN201510837524.0A CN201510837524A CN105387652B CN 105387652 B CN105387652 B CN 105387652B CN 201510837524 A CN201510837524 A CN 201510837524A CN 105387652 B CN105387652 B CN 105387652B
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- distributing plate
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- plate
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- 239000007788 liquid Substances 0.000 title claims abstract description 187
- 239000012530 fluid Substances 0.000 claims abstract description 94
- 239000004744 fabric Substances 0.000 claims description 7
- 230000035772 mutation Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/022—Evaporators with plate-like or laminated elements
-
- 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
- F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
- F25B2339/0241—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having plate-like elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a liquid equalizing plate of a flooded evaporator and the flooded evaporator, wherein a plurality of liquid equalizing holes are arranged on the liquid equalizing plate, and the plurality of liquid equalizing holes are arranged on the liquid equalizing plate in a non-uniform manner, so that the open area in the unit area of a part bearing larger fluid pressure below the liquid equalizing plate is smaller than the open area in the unit area of a part bearing smaller fluid pressure below the liquid equalizing plate, and/or the open area in the unit area of a part with smaller fluid resistance above the liquid equalizing plate is smaller than the open area in the unit area of a part with larger fluid resistance above the liquid equalizing plate. The flooded evaporator comprises a shell, a liquid-equalizing plate and a heat exchange tube, wherein the liquid-equalizing plate is arranged inside the shell and positioned above the bottom of the shell, the heat exchange tube is arranged between the shell and the liquid-equalizing plate, and the liquid-equalizing plate is the liquid-equalizing plate. The invention realizes more reasonable distribution of fluid flow by reasonably arranging the hole opening mode of the plurality of liquid homogenizing holes on the liquid homogenizing plate.
Description
Technical field
The present invention relates to field of heat exchange equipment, liquid-distributing plate and the full-liquid type evaporation of more particularly to a kind of flooded evaporator
Device.
Background technology
Flooded evaporator typically uses in refrigeration systems.It is water in the heat exchanger tube of flooded evaporator, refrigerant is changing
Evaporate outside heat pipe, so heat-transfer area is essentially all and liquefied junction, the stream through case top after refrigerant liquid endothermic gasification
Body outlet outflow.Flooded type evaporator structure is compact, convenient operation and management, and heat transfer coefficient is higher.
Fig. 1 to Fig. 3 shows the structure of the flooded evaporator of the first prior art.Wherein, Fig. 1 is that the first is existing
The structural representation of the flooded evaporator of technology.Fig. 2 is Fig. 1 M-M to cross section structure diagram.Fig. 3 is expiring shown in Fig. 1
The local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in solution type evaporator.In Fig. 1 and Fig. 2, dotted line represents to steam from full-liquid type
Send out the flow direction of the fluid of the fluid inlet inflow of device.
As shown in Figure 1 to Figure 3, the flooded evaporator 1 of the first prior art includes the He of housing 11 of horizontal tubular
It is arranged at the liquid-distributing plate 12 in housing 11 and above the bottom of housing 11.It is to change between the top of liquid-distributing plate 12 and housing 11
Thermal region.Heat exchanger tube is provided with heat exchange area.The bottom of housing 11 offers fluid inlet 111, is offered at the top of housing
Fluid issuing 112.The function of liquid-distributing plate 12 is to flow the refrigerant gas-liquid mixed for entering flooded evaporator 1 by fluid inlet 111
Thing so that stable by the flow of fluid of heat exchanger tube.
Wherein, liquid-distributing plate 12 is flat board, is evenly distributed with multiple equal liquid holes 121 thereon.The bore dia of multiple equal liquid holes 121
It is equal.Multiple equal liquid holes 121 press matrix distribution, the row of matrix and the diameter parallel of housing 11, the axle of matrix column and housing 11
Line is vertical.
Wherein, refrigerant fluid has the following two kinds approach to enter heat exchange area by liquid-distributing plate 12：First, pass through liquid-distributing plate 12
On equal liquid hole 121 enter heat exchange area；Second, heat exchange area is entered by the gap between liquid-distributing plate 12 and housing 11.
Fig. 4 is the structural representation of the flooded evaporator of second of prior art.In Fig. 4, dotted line is represented from full-liquid type
The flow direction for the fluid that the fluid inlet of evaporator flows into.
As shown in figure 4, the flooded evaporator 2 of second of prior art includes horizontal tubular shell 21 and is arranged at
Liquid-distributing plate 22 above the bottom of housing 21.It is heat exchange area between the top of liquid-distributing plate 22 and housing 21, heat exchange area is provided with
Heat exchanger tube.The bottom of housing 21 offers fluid inlet 211, and fluid issuing 212 is offered at the top of housing.Flooded evaporator
2 with folded plate that the difference of flooded evaporator 1 is that liquid-distributing plate 22 is the flute profile to form back-off.
During the present invention is formed, designer has found that above prior art has following weak point：
1st, the equally distributed perforate mode of equal liquid hole on liquid-distributing plate can not reasonably distribute fluid flow.
2nd, the liquid-distributing plate of plate liquid-distributing plate and folded plate type makes the flow resistance of fluid larger.
The content of the invention
It is an object of the invention to provide a kind of liquid-distributing plate of flooded evaporator and flooded evaporator, it is intended to by changing
The equally distributed perforate mode of equal liquid hole become on liquid-distributing plate realizes that fluid flow more reasonably distributes.Further, also pass through
Change the shape of liquid-distributing plate to reduce the flow resistance of the fluid flowed into from fluid inlet, so as to improve the whole of flooded evaporator
Body exchange capability of heat.
First aspect present invention provides a kind of liquid-distributing plate of flooded evaporator, and multiple equal liquid are set on the liquid-distributing plate
Hole, the multiple equal liquid hole nonuniform mutation operator on the liquid-distributing plate, to bear larger fluid pressure below the liquid-distributing plate
Perforated area in the position unit area of power is less than the position unit area that smaller Fluid pressure is born below the liquid-distributing plate
Interior perforated area, and/or cause the perforate face for having in the position unit area of smaller fluid resistance above the liquid-distributing plate
Product is less than the perforated area having above the liquid-distributing plate in the position unit area of larger fluid resistance.
Further, the bore dia of the multiple equal liquid hole is different and/or density degree is different.
Further, the multiple equal liquid hole is arranged in the subregion of the liquid-distributing plate；Or the multiple equal liquid hole
Arranged by bore dia and/or density degree subregion；Or the multiple equal liquid hole presses bore dia and/or density degree gradual change cloth
Put.
Further, the multiple equal liquid hole is arranged in the subregion of the liquid-distributing plate, and the liquid-distributing plate includes setting
The first area of the multiple equal liquid hole and the second area for being not provided with the equal liquid hole.
Further, the area for being not provided with the second area of the equal liquid hole is S1, and the area of the liquid-distributing plate is
S2, wherein, 0.1S2≤S1≤0.5S2.
Further, the multiple equal liquid hole is arranged by bore dia and/or density degree subregion, wherein, it is the multiple equal
Fluid apertures includes multiple first equal liquid holes and multiple second equal liquid holes, and the liquid-distributing plate includes first area and second area, described
Multiple first equal liquid holes are arranged at the first area, and the multiple second equal liquid hole is arranged at the second area, and described
The perforated area of one equal liquid hole is small more than the interval between the perforated area of second equal liquid hole and/or first equal liquid hole
Interval between second equal liquid hole.
Further, the perforated area of first equal liquid hole is more than the perforated area of second equal liquid hole, and described the
The bore dia of one equal liquid hole is dp1, and the bore dia of second equal liquid hole is dp2, wherein, 0.3dp1≤dp2<dp1.
Further, the first area includes the fluid inlet and liquid-distributing plate Edge Distance with the full-liquid type heat exchanger
Region farther out；The second area includes the region relative with the fluid inlet of the full-liquid type heat exchanger, and/or positioned at institute
State the region at liquid-distributing plate edge.
Further, from when the top of the liquid-distributing plate is to from bottom, the second area is included by firstth area
The closed area that domain is surrounded；Or from when the top of the liquid-distributing plate is to from bottom, the second area is included described the
One region segmentation is the fork-shaped region intersected to form by two in-line regions of four parts.
Further, the second area includes the edge region of the liquid-distributing plate.
Further, the second area includes closed area, described from when the top of the liquid-distributing plate is to from bottom
Closed area is border circular areas；Or the second area includes fork-shaped region, an in-line region in the fork-shaped region
Set along the length direction of the liquid-distributing plate, another in-line region is along the length direction perpendicular to the liquid-distributing plate
Direction is set.
Further, the ratio of the area of the second area and the area of the first area is 1/3~2/3.
Further, in the multiple equal liquid hole, the distance of adjacent equal liquid hole is Lk, wherein, 5cm≤Lk≤30cm.
Further, the multiple equal liquid hole by bore dia gradual change arrange, wherein, the multiple equal liquid hole press with it is described full
The direction of the diameter parallel of the housing of solution type evaporator is arranged in line, and the bore dia of the multiple equal liquid hole is from the liquid-distributing plate
Middle part to both sides by row become larger after taper into again；And/or the multiple equal liquid hole is by the axis with the housing
Vertical direction arranges in column, and the bore dia of the multiple equal liquid hole from the middle part of the liquid-distributing plate to axial both ends by row by
Tapered into again after gradual change is big.
Further, the multiple equal liquid hole is arranged by bore dia gradual change, wherein, the bore dia of the multiple equal liquid hole from
The middle part of the liquid-distributing plate becomes larger towards surrounding to be tapered into again.
Further, the difference of the bore dia of the different adjacent equal liquid hole of any two bore dia of the multiple equal liquid hole is small
In or equal to 3mm.
Further, the liquid-distributing plate is arch template liquid-distributing plate, plate liquid-distributing plate or folded plate type liquid-distributing plate.
Further, the liquid-distributing plate is arch template liquid-distributing plate, and the cross sectional shape of the liquid-distributing plate is circular arc.
Second aspect of the present invention provides a kind of flooded evaporator, including housing, liquid-distributing plate and heat exchanger tube, the liquid-distributing plate
It is arranged at the enclosure interior and above the bottom of the housing, the heat exchanger tube is arranged at the housing and the equal liquid
Between plate, wherein, the liquid-distributing plate is the liquid-distributing plate any one of first aspect present invention.
Further, the liquid-distributing plate is the highest of arch template liquid-distributing plate, the vault of the liquid-distributing plate and the housing
The distance of point is Lm, and the vault of the liquid-distributing plate and the distance of the minimum point of the housing are Ln, wherein, 0.7Lm >=Ln >=
0.1Lm。
Further, the spacing between adjacent heat exchange tubes in the heat-exchanging tube bundle in the upper center region of the liquid-distributing plate
D1 is more than the space D 2 between adjacent heat exchange tubes in the heat-exchanging tube bundle of the two side areas of the liquid-distributing plate.
Further, 0.7D1 >=D2 >=0.1D1.
Further, each edge of the liquid-distributing plate and the housing full weld.
Liquid-distributing plate and flooded evaporator based on flooded evaporator provided by the invention, multiple equal liquid holes of liquid-distributing plate
The nonuniform mutation operator on the liquid-distributing plate, to bear in the position unit area of larger Fluid pressure below the liquid-distributing plate
Perforated area be less than below the liquid-distributing plate and bear perforated area in the position unit area of smaller Fluid pressure, and/or
So that there is the perforated area in the position unit area of smaller fluid resistance to be less than on the liquid-distributing plate above the liquid-distributing plate
Side has the perforated area in the position unit area of larger fluid resistance.The setting may be such that flowing into full-liquid type from equal liquid hole steams
It is more uniform to send out the fluid distrbution of the heat exchange area of device, so as to by the perforate for rationally setting multiple equal liquid holes on liquid-distributing plate
Mode realizes that fluid flow more reasonably distributes.
Further, it is plate compared to same cross-sectional girth in the case where liquid-distributing plate is arch template liquid-distributing plate
Liquid-distributing plate or folded plate type liquid-distributing plate, arch template liquid-distributing plate and the spatial flow area that housing surrounds are bigger, therefore using identical
It is smaller using arch template liquid-distributing plate flow resistance when material makes liquid-distributing plate, so as to be carried by changing the shape of liquid-distributing plate
The overall heat exchange ability of high flooded evaporator；, will using arch template liquid-distributing plate and if regulation cross-sectional flow area is certain
More save material.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the flooded evaporator of the first prior art.
Fig. 2 is Fig. 1 M-M to cross section structure diagram.
Fig. 3 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in flooded evaporator shown in Fig. 1.
Fig. 4 is the structural representation of the flooded evaporator of second of prior art.
Fig. 5 is the structural representation of the flooded evaporator of first embodiment of the invention.
Fig. 6 is the structural representation of the liquid-distributing plate of the flooded evaporator shown in Fig. 5.
Fig. 7 is Fig. 6 overlooking the structure diagram.
Fig. 8 is Fig. 7 side structure schematic view.
Fig. 9 is that the heat exchanger tube of the flooded evaporator shown in Fig. 5 arranges schematic diagram.
Figure 10 is the structural representation of the liquid-distributing plate of the flooded evaporator of second embodiment of the invention.
Figure 11 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of third embodiment of the invention
It is intended to.
Figure 12 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of fourth embodiment of the invention
It is intended to.
Figure 13 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of fifth embodiment of the invention
It is intended to.
Into Figure 13, each reference represents Fig. 1 respectively：
1st, 2,3, flooded evaporator；
11st, 21,31, housing；
111st, 211,311, fluid inlet；
112nd, 212,312, fluid issuing；
12nd, 22,32, liquid-distributing plate；
121st, 321,421,521,621,721, equal liquid hole；
6211st, 7211, the first equal liquid hole；
6212nd, 7212, the second equal liquid hole.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to be drawn according to the proportionate relationship of reality.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following accompanying drawing with letter, therefore, once it is defined in a certain Xiang Yi accompanying drawing, then subsequent attached
It need not be further discussed in figure.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
To solve the technical problem referred in background technology, designer is carried out to the flooded evaporator of prior art
In-depth study.Research process, designer have found to open multiple equal liquid holes on the liquid-distributing plate inside flooded evaporator
Pore size distribution mode and the shape of liquid-distributing plate optimize, and can not only optimize fluid inlet to the flow field of liquid-distributing plate, moreover it is possible to optimize
The flow field of heat exchange area, improve the overall heat exchange ability of flooded evaporator.
Based on above result of study, the present invention provides a kind of liquid-distributing plate of flooded evaporator, is set on liquid-distributing plate multiple
Equal liquid hole, multiple equal liquid holes nonuniform mutation operator on liquid-distributing plate, to bear larger Fluid pressure below the liquid-distributing plate
Perforated area in the unit area of position, which is less than below the liquid-distributing plate, to be born in the position unit area of smaller Fluid pressure
Perforated area, and/or cause have the perforated area in the position unit area of smaller fluid resistance small above the liquid-distributing plate
There is the perforated area in the position unit area of larger fluid resistance above the liquid-distributing plate.The flooded evaporator it is equal
On liquid plate the set-up mode of multiple equal liquid holes cause from equal liquid hole flow into flooded evaporator heat exchange area fluid distrbution more
Add uniformly, so as to by rationally setting the perforate mode of multiple equal liquid holes on liquid-distributing plate to realize that fluid flow more reasonably divides
Match somebody with somebody.
Wherein, liquid-distributing plate can be plate liquid-distributing plate or folded plate type liquid-distributing plate.But more preferably it is that liquid-distributing plate is arch sheet
Type liquid-distributing plate.Arch sheet perpendicular to the section of its length direction can be circular arc, ellipse arc or other curve shapes.
Compared to plate liquid-distributing plate or folded plate the type liquid-distributing plate of same cross-sectional girth, arch template liquid-distributing plate encloses with housing
Into spatial flow area it is bigger, therefore when making liquid-distributing plate using identical material, flowed and hindered using arch template liquid-distributing plate
Power is smaller, so as to can improve the overall heat exchange ability of flooded evaporator by changing the shape of liquid-distributing plate.And if provide stream
Dynamic area of section is certain, then will more save material using arch template liquid-distributing plate.
In addition, using arch template liquid-distributing plate fluid flowing path is also changed, it is plate compared to prior art
Liquid-distributing plate, the fluid that heat exchange area is flowed to from equal liquid hole flows towards same direction, and the folded plate type compared to prior art
Liquid-distributing plate, for three directions flowings of fluid direction that heat exchange area is flowed to from equal liquid hole, from the equal liquid of arch template liquid-distributing plate
The fluid of hole outflow is located towards the normal direction flowing of arch template liquid-distributing plate, so that flow of fluid is more sent out
Dissipate, more uniformly enter heat exchange area beneficial to fluid, also enhance the heat exchange of fluid and heat exchanger tube indirectly, improve full-liquid type
The heat exchange efficiency of evaporator.
Various embodiments of the present invention are explained in more detail with reference to Fig. 5 to Figure 13 further below.
First embodiment
Fig. 5 to Fig. 9 shows the flooded evaporator of first embodiment of the invention and its structure of liquid-distributing plate.Wherein, Fig. 5
It is the structural representation of the flooded evaporator of first embodiment of the invention.Fig. 6 is the equal liquid of the flooded evaporator shown in Fig. 5
The structural representation of plate.Fig. 7 is Fig. 6 overlooking the structure diagram.Fig. 8 is Fig. 7 side structure schematic view.Fig. 9 is Fig. 5 institutes
The heat exchanger tube position schematic diagram of the flooded evaporator shown.In Fig. 5 and Fig. 9, dotted line represents the stream from flooded evaporator
The flow direction for the fluid that body import flows into.
As shown in figure 5, flooded evaporator 3 includes horizontal tubular shell 31 and is arranged at the inside of housing 31 and is located at shell
Liquid-distributing plate 32 above the bottom of body 31.It is heat exchange area between the top of liquid-distributing plate 32 and housing 31.Set in heat exchange area
There is heat exchanger tube.The bottom of housing 31 offers fluid inlet 311.The top of housing 31 offers fluid issuing 312.Liquid-distributing plate 32
Enter the refrigerant gas-liquid mixture of flooded evaporator 3 by fluid inlet 311 for flowing so that pass through the fluid stream of heat exchanger tube
Dynamic stability.
As shown in Figures 5 to 9, in first embodiment, liquid-distributing plate 32 is arch sheet, more specifically, liquid-distributing plate perpendicular to
The cross sectional shape of its length direction is circular arc.Arch sheet with circular section relative to other cross sectional shapes arch sheet
For, under conditions of same cross-sectional girth, the spatial flow area that arch sheet and the housing of circular section surround is maximum, because
And flow resistance can be preferably reduced, and be more convenient for processing.
Multiple equal liquid holes 321 are set on liquid-distributing plate 32.As shown in Figure 6 and Figure 7, in first embodiment, multiple equal liquid holes 321
Non-homogeneous setting.The area accounting of the equal liquid hole 321 of liquid-distributing plate 32 is larger, and the distribution mode of optimization equal liquid hole 321 can improve completely
Fluid flow state in solution type evaporator 3.
Wherein, liquid-distributing plate 32 includes the first area for setting multiple equal liquid holes 321 and the second area for being not provided with equal liquid hole.
In first embodiment, first area include with the fluid inlet 311 of full-liquid type heat exchanger 3 and the edge of liquid-distributing plate 32 away from
From region farther out, and second area includes the region relative with the fluid inlet 311 of flooded evaporator 3 and liquid-distributing plate 32
Edge region.Wherein, for first area, the region relative with the fluid inlet 311 of flooded evaporator 3 category
The position of larger Fluid pressure is born below the liquid-distributing plate, the edge region of liquid-distributing plate 32 then belongs to above liquid-distributing plate
Position with smaller fluid resistance.Because it is experimentally found that full-liquid type heat exchanger, in real work, heat exchange area has two
Place's flowing is violent, causes the fluid distrbution for changing region uneven, first, close to the region of fluid inlet in the middle part of evaporator, this be by
Flow of fluid flow is shorter in the middle part of liquid-distributing plate.Second, heat exchange area border, this is due to that borderline region heat exchanger tube arrangement is less,
Flow resistance is smaller.And arrangement above for the two positions can mitigate heat exchange area locally produce violent flow and lead
Cause the uneven phenomenon of fluid distrbution.
As shown in fig. 7, in first embodiment, in the top view of liquid-distributing plate, i.e., from the top of liquid-distributing plate to from bottom
When, second area includes for first area being divided into the fork-shaped region intersected to form by two in-line regions of four parts.
Second area also includes the edge region of liquid-distributing plate 32.
Wherein, length direction of the in-line region along liquid-distributing plate is set in fork-shaped region, equal positioned at arch template
At the vault A of liquid plate 32, direction of another in-line region along the length direction perpendicular to liquid-distributing plate is set.Wherein, two
The infall in individual in-line region is relative with the fluid inlet 311 of flooded evaporator 3.
In first embodiment, the bore dia all same of multiple equal liquid holes 321 of first area.Formed by fork-shaped region segmentation
Four parts in each part in multiple equal liquid holes 321 be uniformly distributed.Specifically, multiple equal liquid holes of each part
321 is vertical with the axis of housing 31 with matrix distribution, the row of matrix and the diameter parallel of housing 31, matrix column.
In first embodiment, the area for being not provided with the second area of equal liquid hole is S1, and the area of liquid-distributing plate is S2, preferably
Ground, 0.1S2≤S1≤0.5S2.It is highly preferred that 0.2S2≤S1≤0.4S2.Such as S1=0.3S2.Second area is rationally set
Area be beneficial to fluid reasonable layout and flowing.
In addition, in multiple equal liquid holes 321 of first embodiment, the distance of two adjacent equal liquid holes 321 is Lk, it is preferable that
5cm≤Lk≤30cm.It is highly preferred that 10cm≤Lk≤20cm.Such as Lk=15cm.Distance between equal liquid hole is rationally set, together
Sample is beneficial to fluid reasonable layout and flowing, is also beneficial to the intensity for ensureing liquid-distributing plate 32.
As shown in figure 9, in the flooded evaporator 3 of first embodiment, the vault A of liquid-distributing plate 32 and the peak of housing 31
Distance be Lm, the vault A of liquid-distributing plate 32 and the distance of the minimum point of housing 31 are Ln, it is preferable that 0.7Lm >=Ln >=0.1Lm.
It is highly preferred that 0.4Lm >=Ln >=0.2Lm.Such as Ln=0.2Lm.Lm and Ln is rationally set, beneficial to fluid reasonable layout and stream
It is dynamic, and the arrangement beneficial to heat exchanger tube.
As shown in figure 9, the space D 1 between the adjacent heat exchange tubes of the vault upper area of liquid-distributing plate is more than positioned at equal
Space D 2 between the vault two side areas B of liquid plate adjacent heat exchange tubes.Preferably, 0.7D1 >=D2 >=0.1D1.It is highly preferred that
0.6D1≥D2≥0.4D1.For example, D2=0.5D1 can be made.The setting is beneficial to the stream that heat exchange area is flowed into from equal discharge orifice 321
Body is by uniform resistance, therefore, beneficial to reasonable layout of the fluid in heat exchange area and flowing.It should be noted that, although this
The density degree that embodiment exchanges the arrangement of heat pipe by taking arch template liquid-distributing plate as an example optimizes, but the setting is equally applicable
In plate liquid-distributing plate or folded plate shape liquid-distributing plate.
In first embodiment, each edge and the full weld of housing 31 of liquid-distributing plate 32.The setting to flow into from fluid inlet 311
Fluid in housing 31 can only flow into heat exchange area through the equal liquid hole 321 on liquid-distributing plate 32, beneficial to control liquid-distributing plate 32 edge
The flow of heat exchange area is flowed into, therefore, is flowed beneficial to preferably tissue fluid.
First embodiment is by improving the distribution of equal liquid hole 321 and the shape optimum of change liquid-distributing plate 32 heat exchange area
Flow distribution, while the flow region of the bottom of liquid-distributing plate 32 of flooded evaporator 3 is optimized, reduce the relatively low area of heat exchange efficiency
Domain, improve the heat exchange efficiency of flooded evaporator 3.
Second embodiment
Figure 10 is the structural representation of the liquid-distributing plate of the flooded evaporator of second embodiment of the invention.
The difference of second embodiment and first embodiment is multiple equal liquid holes 421 on the liquid-distributing plate 42 of second embodiment
Arrangement it is different.
As shown in Figure 10, the liquid-distributing plate 42 of second embodiment includes setting the first area of multiple equal liquid holes 421 and not set
Put the second area of equal liquid hole.
In second embodiment, from when the top of liquid-distributing plate is to from bottom, second area includes what is surrounded by first area
Closed area.Specifically, closed area is border circular areas.The border circular areas is relative with the fluid inlet of full-liquid type parallel operation.Second
Region also includes the edge region of liquid-distributing plate 32.
Other unaccounted parts refer to the related content of first embodiment in second embodiment.
3rd embodiment
Figure 11 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of third embodiment of the invention
It is intended to.
The difference of 3rd embodiment and first embodiment and second embodiment is the cloth of multiple equal liquid holes on liquid-distributing plate
Put mode difference.
As shown in figure 11, in 3rd embodiment, liquid-distributing plate includes setting the first area of multiple equal liquid holes 521 and is not provided with
The second area of equal liquid hole.Multiple equal liquid holes 521 wherein positioned at first area are dislocatedly distributed.Specifically, multiple equal liquid holes 521
Bore dia is identical, is arranged by the direction of the diameter parallel with housing into multirow, distance between each adjacent equal liquid hole 521 in often going
Equal liquid hole between two equal and yet equal but adjacent with the distance between equal liquid hole 521 of each phase neck in other rows rows is not
It is arrangement in alignment, but wherein each equal liquid hole of a line is located between similar two equal liquid holes of another row.
Other unaccounted parts refer to the related content of first embodiment and second embodiment in 3rd embodiment.
Fourth embodiment
Figure 12 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of fourth embodiment of the invention
It is intended to.
The difference of fourth embodiment and first embodiment to 3rd embodiment is the cloth of multiple equal liquid holes on liquid-distributing plate
Put mode difference.
As shown in figure 12, multiple equal liquid holes 621 on the liquid-distributing plate of fourth embodiment include multiple first equal liquid holes 6211
With multiple second equal liquid holes 6212.Liquid-distributing plate includes setting the first area of multiple first equal liquid holes 6211 and sets the second equal liquid
The second area in hole 6212.Wherein, the perforated area of the first equal liquid hole 6211 is more than the perforated area of the second equal liquid hole 6212.It is excellent
The ratio of selection of land, the area of second area and the area of first area is 1/3~2/3.
Preferably, the bore dia of the first equal liquid hole is dp1, and the bore dia of the second equal liquid hole is dp2, wherein, 0.3dp1≤
Dp2 ＜ dp1.The pressure that first area is born is less than the pressure that second area is born.
In fourth embodiment, from when the top of liquid-distributing plate is to from bottom, second area includes what is surrounded by first area
Closed area.Preferably, closed area is border circular areas.The border circular areas is relative with the fluid inlet of full-liquid type parallel operation.Certainly,
The second area of fourth embodiment can also include the fringe region of liquid-distributing plate surrounding, can set or not set on the fringe region
Put the second equal liquid hole.
Other unaccounted parts refer to first embodiment to the related content of 3rd embodiment in fourth embodiment.
5th embodiment
Figure 13 shows for the local arrangement of the equal liquid hole of liquid-distributing plate in the flooded evaporator of fifth embodiment of the invention
It is intended to.
The difference of 5th embodiment and first embodiment to fourth embodiment is the cloth of multiple equal liquid holes on liquid-distributing plate
Put mode difference.
As shown in figure 13, multiple equal liquid holes 721 include multiple Hes of first equal liquid hole 7211 on the liquid-distributing plate of the 5th embodiment
Multiple second equal liquid holes 7212.Liquid-distributing plate includes setting the first area of multiple first equal liquid holes 7211 and sets the second equal liquid hole
7212 second area.The Fluid pressure born below first area is less than the Fluid pressure born below second area or the
One overlying regions with fluid resistance be more than second area above with fluid resistance.Preferably, the area of second area
Ratio with the area of first area is 1/3~2/3.
Wherein, the perforated area of the first equal liquid hole 7211 is more than the perforated area of the second equal liquid hole 7212.Preferably, first
The bore dia of equal liquid hole is dp1, and the bore dia of the second equal liquid hole is dp2, wherein, 0.3dp1≤dp2 ＜ dp1.
In 5th embodiment, multiple equal liquid holes 721 on the whole with matrix distribution, the row of matrix and the diameter parallel of housing,
Matrix column is vertical with the axis of housing.In the present embodiment, the second area for setting the second equal liquid hole 7212 is to be steamed with full-liquid type
Send out the relative region of the fluid inlet of device.
Other unaccounted parts refer to first embodiment to the related content of fourth embodiment in 5th embodiment.
Above example should not limit the invention, such as：
Set the first equal liquid hole, second area that the second equal liquid hole is set in multiple equal liquid hole non-uniform Distributions and first area
In the case of, the interval between the first equal liquid hole can also be made to be less than the interval between the second equal liquid hole.
The distribution mode of equal liquid hole bore dia gradual change can also be used to arrange multiple equal liquid holes.Such as：Evaporated in full-liquid type
The fluid of device with it is relative in the middle part of liquid-distributing plate in the case of, multiple equal liquid holes can be made to be embarked on journey cloth by the direction with housing diameter parallel
Put, bore dia from the middle part of liquid-distributing plate to both sides by row become larger after taper into again, and/or make multiple equal liquid holes by
The direction vertical with housing axis arranges that bore dia is pressed from the position relative with fluid inlet of liquid-distributing plate to axial both ends in column
Row taper into again after becoming larger；The bore dias of multiple equal liquid holes can also be made, and with the middle part of liquid-distributing plate, (such as fluid enters
Mouthful the point that intersects with liquid-distributing plate of axis centered on) become larger taper into again etc. laterally.Using equal liquid hole bore dia
During the distribution mode of gradual change, bore dia change will tend to be steady, and should not change rapid.Preferably, any the two of multiple equal liquid holes
The difference of the bore dia of the different adjacent equal liquid hole of individual bore dia is less than or equal to 3mm.It is highly preferred that any the two of multiple equal liquid holes
The difference of the bore dia of the different adjacent equal liquid hole of individual bore dia is less than or equal to 1mm.Certainly, it is different in having for other forms
In the liquid-distributing plate of multiple equal liquid holes of bore dia, bore dia change can also be more steady, meets any two bore dia difference
Adjacent equal liquid hole bore dia difference be less than or equal to 3mm even 1mm requirement.
From the above description, it can be seen that present invention optimizes the liquid-distributing plate structure of flooded evaporator and its perforate of equal liquid hole
Mode, on the one hand optimize fluid inlet to the flow field of liquid-distributing plate, reduce flow resistance, on the other hand enhance the equal liquid of liquid-distributing plate
Ability, i.e., by reasonable distribution flow, reduce the less efficient region of evaporator internal heat.Various embodiments above at least has
One of advantages below：
1st, it is the optimization equal liquid effect of liquid-distributing plate, makes multiple liquid also nonuniform mutation operators, such as to liquid-distributing plate using subregion
Mode or the mode of bore dia gradual change arrange the mode of equal liquid hole to reduce the flow of flowing intense regions.
2nd, plate liquid-distributing plate of the arch template liquid-distributing plate compared to same cross-sectional girth, folded plate type liquid-distributing plate, itself and shell
The flow area in the space that body surrounds is bigger, and therefore, the arch template liquid-distributing plate flow resistance made using identical material is smaller,
Enhance the heat exchange efficiency of flooded evaporator.Using arch template liquid-distributing plate fluid flowing path is changed, it is equal from arch template
The fluid of the equal liquid hole outflow of liquid plate is located towards the normal direction flowing of liquid-distributing plate, flow of fluid is more dissipated,
In heat exchange area, distribution is more uniform, also enhances the heat exchange of fluid and heat exchanger tube, improves the heat exchange effect of flooded evaporator
Rate.
When heat exchanger tube the 3rd, is arranged in flooded evaporator, for the heat exchanger tube that the center of liquid-distributing plate is distributed,
The heat exchange tube of liquid plate two side areas distribution is closeer, the resistance point that can be subject to the fluid from equal liquid hole inflow heat exchange area
Cloth is uniform, is uniformly distributed beneficial to fluid, so as to strengthen the heat exchange efficiency of flooded evaporator.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among the claimed technical scheme scope of the present invention.
Claims (10)
1. a kind of liquid-distributing plate of flooded evaporator, multiple equal liquid holes are set on the liquid-distributing plate, it is characterised in that the multiple
Equal liquid hole nonuniform mutation operator on the liquid-distributing plate, to bear the position unit of larger Fluid pressure below the liquid-distributing plate
Perforated area in area is less than the perforated area born below the liquid-distributing plate in the position unit area of smaller Fluid pressure,
And/or cause above the liquid-distributing plate there is the perforated area in the position unit area of smaller fluid resistance to be less than the equal liquid
There is the perforated area in the position unit area of larger fluid resistance, the multiple equal liquid hole presses bore dia gradual change cloth above plate
Put, wherein,
The multiple equal liquid hole is arranged in line by the direction of the diameter parallel of the housing with the flooded evaporator, and described more
The bore dia of individual equal liquid hole tapers into again after being become larger from the middle part of the liquid-distributing plate to both sides by row；It is and/or described
Multiple equal liquid holes are arranged in column by the direction vertical with the axis of the housing, and the bore dia of the multiple equal liquid hole is from described
The middle part of liquid-distributing plate tapers into again after being become larger to axial both ends by row；Or
The bore dia of the multiple equal liquid hole becomes larger towards surrounding from the middle part of the liquid-distributing plate and tapered into again.
2. liquid-distributing plate according to claim 1, it is characterised in that in the multiple equal liquid hole, the distance of adjacent equal liquid hole
For Lk, wherein, 5cm≤Lk≤30cm.
3. liquid-distributing plate according to claim 1, it is characterised in that any two bore dia of the multiple equal liquid hole is different
The difference of bore dia of adjacent equal liquid hole be less than or equal to 3mm.
4. liquid-distributing plate according to claim 1, it is characterised in that the liquid-distributing plate is arch template liquid-distributing plate, plate
Liquid-distributing plate or folded plate type liquid-distributing plate.
5. liquid-distributing plate according to claim 4, it is characterised in that the liquid-distributing plate is arch template liquid-distributing plate, described equal
The cross sectional shape of liquid plate is circular arc.
6. a kind of flooded evaporator, including housing, liquid-distributing plate and heat exchanger tube, the liquid-distributing plate be arranged at the enclosure interior and
Above the bottom of the housing, the heat exchanger tube is arranged between the housing and the liquid-distributing plate, it is characterised in that institute
Liquid-distributing plate is stated as the liquid-distributing plate according to any one of claim 1 to 5.
7. flooded evaporator according to claim 6, it is characterised in that the liquid-distributing plate is arch template liquid-distributing plate,
The distance of the vault of the liquid-distributing plate and the peak of the housing is Lm, and the vault of the liquid-distributing plate is minimum with the housing
The distance of point is Ln, wherein, 0.7Lm >=Ln >=0.1Lm.
8. the flooded evaporator according to claim 6 or 7, it is characterised in that positioned at the upper center of the liquid-distributing plate
Space D 1 in the heat-exchanging tube bundle in region between adjacent heat exchange tubes is more than the heat-exchanging tube bundle of the two side areas positioned at the liquid-distributing plate
Space D 2 between middle adjacent heat exchange tubes.
9. flooded evaporator according to claim 8, it is characterised in that 0.7D1 >=D2 >=0.1D1.
10. the flooded evaporator according to claim 6 or 7, it is characterised in that each edge of the liquid-distributing plate with it is described
Housing full weld.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837524.0A CN105387652B (en) | 2015-11-26 | 2015-11-26 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837524.0A CN105387652B (en) | 2015-11-26 | 2015-11-26 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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| CN105387652B true CN105387652B (en) | 2018-03-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940820A (en) * | 2017-12-21 | 2018-04-20 | 珠海格力电器股份有限公司 | Oil separator, condenser and refrigerating plant |
| CN108759514B (en) * | 2018-06-21 | 2023-04-21 | 青岛海尔空调电子有限公司 | Liquid equalizer for shell and tube heat exchanger and shell and tube heat exchanger |
| CN109855318A (en) * | 2019-02-18 | 2019-06-07 | 青岛海尔空调电子有限公司 | A kind of magnetic suspension centrifugal chiller system |
| CN110530066A (en) * | 2019-09-11 | 2019-12-03 | 上海工程技术大学 | Low pressure refrigerant flooded evaporator |
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| JPH08247577A (en) * | 1995-03-07 | 1996-09-27 | Mitsubishi Electric Corp | Evaporator for refrigerating machine |
| CN203024508U (en) * | 2013-01-16 | 2013-06-26 | 珠海格力电器股份有限公司 | Flooded evaporator and water-cooled air conditioning unit with same |
| CN203572114U (en) * | 2013-09-05 | 2014-04-30 | 浙江英谷节能设备有限公司 | Demisting structure used for flooded evaporator |
| CN204593973U (en) * | 2015-03-23 | 2015-08-26 | 珠海格力电器股份有限公司 | Oil return type condenser and air conditioning system |
| CN204718194U (en) * | 2015-05-19 | 2015-10-21 | 麦克维尔空调制冷(武汉)有限公司 | A kind of flooded evaporator |
| CN205156444U (en) * | 2015-11-26 | 2016-04-13 | 珠海格力电器股份有限公司 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489545U (en) * | 2013-09-17 | 2014-03-19 | 广州联合冷热设备有限公司 | Refrigerant distribution device of flooded evaporator |
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| JPH08247577A (en) * | 1995-03-07 | 1996-09-27 | Mitsubishi Electric Corp | Evaporator for refrigerating machine |
| CN203024508U (en) * | 2013-01-16 | 2013-06-26 | 珠海格力电器股份有限公司 | Flooded evaporator and water-cooled air conditioning unit with same |
| CN203572114U (en) * | 2013-09-05 | 2014-04-30 | 浙江英谷节能设备有限公司 | Demisting structure used for flooded evaporator |
| CN204593973U (en) * | 2015-03-23 | 2015-08-26 | 珠海格力电器股份有限公司 | Oil return type condenser and air conditioning system |
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| CN105387652A (en) | 2016-03-09 |
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