CN205156444U - Liquid equalizing plate of flooded evaporator and flooded evaporator - Google Patents
Liquid equalizing plate of flooded evaporator and flooded evaporator Download PDFInfo
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- CN205156444U CN205156444U CN201520956453.1U CN201520956453U CN205156444U CN 205156444 U CN205156444 U CN 205156444U CN 201520956453 U CN201520956453 U CN 201520956453U CN 205156444 U CN205156444 U CN 205156444U
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- 239000007788 liquid Substances 0.000 title claims abstract description 189
- 239000012530 fluid Substances 0.000 claims abstract description 98
- 230000035772 mutation Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 14
- 238000009826 distribution Methods 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a liquid equalizing plate and flooded evaporator of flooded evaporator. Set up a plurality of samming holes on the samming board, a plurality of samming holes are non-uniformly arranged on the samming board to make the trompil area in the position unit area that the samming board below bore great fluid pressure is less than the trompil area in the position unit area that the samming board below bore less fluid pressure, and/or make the trompil area in the position unit area that the samming board top has less fluid resistance is less than the trompil area in the position unit area that the samming board top has great fluid resistance. 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 utility model discloses a rationally set up the trompil mode in a plurality of equal liquid holes on the equal liquid board and realize that fluid flow distributes more rationally.
Description
Technical field
The utility model relates to field of heat exchange equipment, particularly a kind of liquid-distributing plate of flooded evaporator and flooded evaporator.
Background technology
Flooded evaporator generally uses in refrigeration systems.Be water in the heat exchanger tube of flooded evaporator, refrigerant evaporates outside heat exchanger tube, so heat-transfer area is all and liquefied junction substantially, the fluid issuing through case top after refrigerant liquid endothermic gasification flows out.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 the structural representation of the flooded evaporator of the first prior art.Fig. 2 is that the M-M of Fig. 1 is to sectional structure schematic diagram.Fig. 3 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator shown in Fig. 1.In Fig. 1 and Fig. 2, dotted line represents the flow direction of the fluid flowed into from the fluid inlet of flooded evaporator.
As shown in Figure 1 to Figure 3, the flooded evaporator 1 of the first prior art comprises the housing 11 of horizontal tubular and to be arranged in housing 11 and liquid-distributing plate 12 above the bottom being positioned at housing 11.It is heat exchange area between the top of liquid-distributing plate 12 and housing 11.Heat exchanger tube is provided with in heat exchange area.The bottom of housing 11 offers fluid inlet 111, and the top of housing offers fluid issuing 112.The function of liquid-distributing plate 12 is that current-sharing enters the refrigerant gas-liquid mixture of flooded evaporator 1 by fluid inlet 111, makes by the fluid flowing of heat exchanger tube stable.
Wherein, liquid-distributing plate 12 is dull and stereotyped, it is evenly distributed with multiple equal liquid hole 121.The bore dia of multiple equal liquid hole 121 is equal.Multiple equal liquid hole 121 presses matrix distribution, the row of matrix and the axis being parallel of housing 11, the axes normal of matrix column and housing 11.
Wherein, refrigerant fluid has the following two kinds approach to enter heat exchange area by liquid-distributing plate 12: one is enter heat exchange area by the equal liquid hole 121 on liquid-distributing plate 12; Two is enter heat exchange area by the gap between liquid-distributing plate 12 and housing 11.
Fig. 4 is the structural representation of the flooded evaporator of the second prior art.In Fig. 4, dotted line represents the flow direction of the fluid flowed into from the fluid inlet of flooded evaporator.
As shown in Figure 4, the flooded evaporator 2 of this second prior art comprises horizontal tubular shell 21 and is arranged at the liquid-distributing plate 22 of top bottom housing 21.Be 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 the top of housing offers fluid issuing 212.The flap of flooded evaporator 2 and the difference of flooded evaporator 1 to be liquid-distributing plate 22 the be flute profile forming back-off.
In formation process of the present utility model, designer finds that above prior art has following weak point:
1, the equally distributed perforate mode of the equal liquid hole on liquid-distributing plate can not rational distributing fluids flow.
The liquid-distributing plate of 2, plate liquid-distributing plate and flap type makes the flow resistance of fluid larger.
Utility model content
The purpose of this utility model is the liquid-distributing plate and the flooded evaporator that provide a kind of flooded evaporator, is intended to realize fluid flow by the equally distributed perforate mode of equal liquid hole changed on liquid-distributing plate and more reasonably distributes.Further, also by changing the shape of liquid-distributing plate to reduce the flow resistance of the fluid flowed into from fluid inlet, thus the overall heat exchange ability of flooded evaporator is improved.
The utility model first aspect provides a kind of liquid-distributing plate of flooded evaporator, described liquid-distributing plate arranges multiple equal liquid hole, described multiple equal liquid hole nonuniform mutation operator on described liquid-distributing plate, the perforated area born below described liquid-distributing plate in the position unit are of less fluid pressure is less than to make the perforated area born below described liquid-distributing plate in the position unit are of larger fluid pressure, and/or the perforated area perforated area had above described liquid-distributing plate in the position unit are of less fluid resistance being less than to have above described liquid-distributing plate in the position unit are of larger fluid resistance.
Further, the bore dia of described multiple equal liquid hole is different and/or density degree is different.
Further, described multiple equal liquid hole is arranged in the subregion of described liquid-distributing plate; Or described multiple equal liquid hole presses bore dia and/or density degree subregion is arranged; Or described multiple equal liquid hole presses bore dia and/or density degree gradual change is arranged.
Further, described multiple equal liquid hole is arranged in the subregion of described liquid-distributing plate, and described liquid-distributing plate comprises the first area arranging described multiple equal liquid hole and the second area not arranging described equal liquid hole.
Further, the area not arranging the described second area of described equal liquid hole is S1, and the area of described liquid-distributing plate is S2, wherein, and 0.1S2≤S1≤0.5S2.
Further, described multiple equal liquid hole presses bore dia and/or density degree subregion is arranged, wherein, described multiple equal liquid hole comprises multiple first equal liquid hole and multiple second equal liquid hole, described liquid-distributing plate comprises first area and second area, described multiple first equal liquid hole is arranged at described first area, described multiple second equal liquid hole is arranged at described second area, and the perforated area of the described first equal liquid hole interval be greater than between the perforated area of described second equal liquid hole and/or described first equal liquid hole is less than the interval between described second equal liquid hole.
Further, the perforated area of described first equal liquid hole is greater than the perforated area of described second equal liquid hole, and the bore dia of described first equal liquid hole is dp1, and the bore dia of described second equal liquid hole is dp2, wherein, and 0.3dp1≤dp2<dp1.
Further, described first area comprises and the fluid inlet of described full-liquid type heat exchanger and liquid-distributing plate Edge Distance region far away; Described second area comprises the region relative with the fluid inlet of described full-liquid type heat exchanger, and/or is positioned at the region at described liquid-distributing plate edge.
Further, when observing from the top of described liquid-distributing plate to bottom, described second area comprises the closed area surrounded by described first area; Or when observing from the top of described liquid-distributing plate to bottom, described second area comprises the fork-shaped region intersected to form by two in-line regions described first area being divided into four parts.
Further, described second area comprises the region, edge of described liquid-distributing plate.
Further, described second area comprises closed area, and when observing from the top of described liquid-distributing plate to bottom, described closed area is border circular areas; Or described second area comprises fork-shaped region, the in-line region in described fork-shaped region is arranged along the length direction of described liquid-distributing plate, and another in-line region is arranged along the direction of the length direction perpendicular to described liquid-distributing plate.
Further, the ratio of the area of described second area and the area of described first area is 1/3 ~ 2/3.
Further, in described multiple equal liquid hole, the distance of adjacent equal liquid hole is Lk, wherein, and 5cm≤Lk≤30cm.
Further, described multiple equal liquid hole is pressed bore dia gradual change and is arranged, wherein, described multiple equal liquid hole is arranged in line by the direction of the axis being parallel of the housing with described flooded evaporator, and the bore dia of described multiple equal liquid hole diminishes after becoming greatly by row gradually from the middle part of described liquid-distributing plate to both sides more gradually; And/or described multiple equal liquid hole is by layout in column with the direction of the axes normal of described housing, and the bore dia of described multiple equal liquid hole diminishes after becoming greatly from the middle part of described liquid-distributing plate to axial two ends gradually by row more gradually.
Further, described multiple equal liquid hole is pressed bore dia gradual change and is arranged, wherein, the bore dia of described multiple equal liquid hole becomes gradually from the middle part of described liquid-distributing plate towards surrounding and diminishes gradually more greatly.
Further, the difference of the bore dia of the adjacent equal liquid hole that any two bore dias of described multiple equal liquid hole are different is less than or equal to 3mm.
Further, described liquid-distributing plate is arch template liquid-distributing plate, plate liquid-distributing plate or flap type liquid-distributing plate.
Further, described liquid-distributing plate is arch template liquid-distributing plate, and the cross sectional shape of described liquid-distributing plate is circular arc.
The utility model second aspect provides a kind of flooded evaporator, comprise housing, liquid-distributing plate and heat exchanger tube, described liquid-distributing plate is arranged at described enclosure interior and is positioned at above the bottom of described housing, described heat exchanger tube is arranged between described housing and described liquid-distributing plate, wherein, the liquid-distributing plate of described liquid-distributing plate according to any one of the utility model first aspect.
Further, described liquid-distributing plate is arch template liquid-distributing plate, and the distance of the vault of described liquid-distributing plate and the peak of described housing is Lm, and the distance of the vault of described liquid-distributing plate and the minimum point of described housing is Ln, wherein, and 0.7Lm >=Ln >=0.1Lm.
Further, the space D 1 in the heat-exchanging tube bundle in the upper center region of described liquid-distributing plate between adjacent heat exchange tubes is greater than the space D 2 in the heat-exchanging tube bundle of the two side areas of described liquid-distributing plate between adjacent heat exchange tubes.
Further, 0.7D1 >=D2 >=0.1D1.
Further, each edge of described liquid-distributing plate and described housing full weld.
The liquid-distributing plate of the flooded evaporator provided based on the utility model and flooded evaporator, multiple equal liquid holes nonuniform mutation operator on described liquid-distributing plate of liquid-distributing plate, the perforated area born below described liquid-distributing plate in the position unit are of less fluid pressure is less than to make the perforated area born below described liquid-distributing plate in the position unit are of larger fluid pressure, and/or the perforated area perforated area had above described liquid-distributing plate in the position unit are of less fluid resistance being less than to have above described liquid-distributing plate in the position unit are of larger fluid resistance.This setting can make the fluid distrbution flowing into the heat exchange area of flooded evaporator from equal liquid hole more even, thus, realize fluid flow by the perforate mode rationally arranging the multiple equal liquid holes on liquid-distributing plate and more reasonably distribute.
Further, when liquid-distributing plate is arch template liquid-distributing plate, compared to plate liquid-distributing plate or the flap type liquid-distributing plate of same cross-sectional girth, the spatial flow area that arch template liquid-distributing plate and housing surround is larger, when therefore adopting same material to make liquid-distributing plate, adopt arch template liquid-distributing plate flow resistance less, thus the overall heat exchange ability of flooded evaporator can be improved by the shape changing liquid-distributing plate; And if regulation cross-sectional flow area is certain, then adopt arch template liquid-distributing plate more will save material.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the flooded evaporator of the first prior art.
Fig. 2 is that the M-M of Fig. 1 is to sectional structure schematic diagram.
The local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in flooded evaporator shown in Fig. 3 Fig. 1.
Fig. 4 is the structural representation of the flooded evaporator of the second prior art.
Fig. 5 is the structural representation of the flooded evaporator of the utility model first embodiment.
Fig. 6 is the structural representation of the liquid-distributing plate of the flooded evaporator shown in Fig. 5.
Fig. 7 is the plan structure schematic diagram of Fig. 6.
Fig. 8 is the side-looking structural representation of Fig. 7.
Schematic diagram arranged by the heat exchanger tube that Fig. 9 is the flooded evaporator shown in Fig. 5.
Figure 10 is the structural representation of the liquid-distributing plate of the flooded evaporator of the utility model second embodiment.
Figure 11 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 3rd embodiment.
Figure 12 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 4th embodiment.
Figure 13 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 5th embodiment.
In Fig. 1 to Figure 13, each Reference numeral represents respectively:
1,2,3, flooded evaporator;
11,21,31, housing;
111,211,311, fluid inlet;
112,212,312, fluid issuing;
12,22,32, liquid-distributing plate;
121,321,421,521,621,721, equal liquid hole;
6211,7211, the first equal liquid hole;
6212,7212, the second equal liquid hole.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing description.In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.This device also can other different modes location (90-degree rotation or be in other orientation), and relatively describe space used here and make respective explanations.
For solving the technical problem mentioned in background technology, the flooded evaporator of designer to prior art conducts in-depth research.In research process, designer finds that on the liquid-distributing plate to flooded evaporator inside, the perforate distribution mode of multiple equal liquid hole and the shape of liquid-distributing plate are optimized, the flow field of fluid inlet to liquid-distributing plate can not only be optimized, the flow field of heat exchange area can also be optimized, improve the overall heat exchange ability of flooded evaporator.
Based on above result of study, the utility model provides a kind of liquid-distributing plate of flooded evaporator, liquid-distributing plate is arranged multiple equal liquid hole, multiple equal liquid hole nonuniform mutation operator on liquid-distributing plate, the perforated area born below described liquid-distributing plate in the position unit are of less fluid pressure is less than to make the perforated area born below described liquid-distributing plate in the position unit are of larger fluid pressure, and/or the perforated area perforated area had above described liquid-distributing plate in the position unit are of less fluid resistance being less than to have above described liquid-distributing plate in the position unit are of larger fluid resistance.On the liquid-distributing plate of this flooded evaporator, the set-up mode of multiple equal liquid hole makes the fluid distrbution flowing into the heat exchange area of flooded evaporator from equal liquid hole more even, thus, realize fluid flow by the perforate mode rationally arranging the multiple equal liquid holes on liquid-distributing plate and more reasonably distribute.
Wherein, liquid-distributing plate can be plate liquid-distributing plate or flap type liquid-distributing plate.But more preferably, liquid-distributing plate is arch template liquid-distributing plate.The cross section perpendicular to its length direction of arch sheet can be circular arc, ellipse arc or other curve shape.
Compared to plate liquid-distributing plate or the flap type liquid-distributing plate of same cross-sectional girth, the spatial flow area that arch template liquid-distributing plate and housing surround is larger, when therefore adopting identical material to make liquid-distributing plate, adopt arch template liquid-distributing plate flow resistance less, thus can be improved the overall heat exchange ability of flooded evaporator by the shape changing liquid-distributing plate.And if regulation cross-sectional flow area is certain, then adopt arch template liquid-distributing plate more will save material.
In addition, adopt arch template liquid-distributing plate that fluid flowing path is also changed, compared to the plate liquid-distributing plate of prior art, the fluid flowing to heat exchange area from equal liquid hole flows towards same direction, and compared to the flap type liquid-distributing plate of prior art, the fluid flowing to heat exchange area from equal liquid hole flows towards three directions, the fluid flowed out from the equal liquid hole of arch template liquid-distributing plate can be set to flow towards the normal direction of arch template liquid-distributing plate, thus fluid flowing is dispersed more, be beneficial to fluid and enter heat exchange area more equably, also the heat exchange of fluid and heat exchanger tube is indirectly enhanced, improve the heat exchange efficiency of flooded evaporator.
Further combined with Fig. 5 to Figure 13, each embodiment of the utility model is illustrated in further detail below.
First embodiment
Fig. 5 to Fig. 9 shows the flooded evaporator of the utility model first embodiment and the structure of liquid-distributing plate thereof.Wherein, Fig. 5 is the structural representation of the flooded evaporator of the utility model first embodiment.Fig. 6 is the structural representation of the liquid-distributing plate of the flooded evaporator shown in Fig. 5.Fig. 7 is the plan structure schematic diagram of Fig. 6.Fig. 8 is the side-looking structural representation of Fig. 7.The heat exchanger tube position schematic diagram that Fig. 9 is the flooded evaporator shown in Fig. 5.In Fig. 5 and Fig. 9, dotted line represents the flow direction of the fluid flowed into from the fluid inlet of flooded evaporator.
As shown in Figure 5, flooded evaporator 3 comprises horizontal tubular shell 31 and is arranged at the inner and liquid-distributing plate 32 above the bottom being positioned at housing 31 of housing 31.It is heat exchange area between the top of liquid-distributing plate 32 and housing 31.Heat exchanger tube is provided with in heat exchange area.The bottom of housing 31 offers fluid inlet 311.The top of housing 31 offers fluid issuing 312.Liquid-distributing plate 32 is entered the refrigerant gas-liquid mixture of flooded evaporator 3 by fluid inlet 311 for current-sharing, make by the fluid flowing of heat exchanger tube stable.
As shown in Figures 5 to 9, in the first embodiment, liquid-distributing plate 32 is arch sheet, and more specifically, the cross sectional shape perpendicular to its length direction of liquid-distributing plate is circular arc.There is the arch sheet of circular section for the arch sheet of other cross sectional shape, under the condition of same cross-sectional girth, the spatial flow area that the arch sheet of circular section and housing surround is maximum, thus can reduce flow resistance better, and processing of being more convenient for.
Liquid-distributing plate 32 is arranged multiple equal liquid hole 321.As shown in Figure 6 and Figure 7, in the first embodiment, the non-homogeneous setting of multiple equal liquid holes 321.The area accounting of the equal liquid hole 321 of liquid-distributing plate 32 is comparatively large, and the distribution mode of optimization equal liquid hole 321 can improve the fluid flow state in flooded evaporator 3.
Wherein, liquid-distributing plate 32 comprises the first area arranging multiple equal liquid hole 321 and the second area not arranging equal liquid hole.
In first embodiment, first area comprises and the fluid inlet 311 of full-liquid type heat exchanger 3 and liquid-distributing plate 32 Edge Distance region far away, and second area comprises the region, edge of the region relative with the fluid inlet 311 of flooded evaporator 3 and liquid-distributing plate 32.Wherein, for first area, the region relative with the fluid inlet 311 of flooded evaporator 3 belongs to the position of bearing larger fluid pressure below described liquid-distributing plate, and the region, edge of liquid-distributing plate 32 then belongs to the position above liquid-distributing plate with less fluid resistance.Because found through experiments, full-liquid type heat exchanger is in real work, and heat exchange area has the flowing of two places violent, causes the fluid distrbution changing region uneven, one is the region near fluid inlet in the middle part of evaporimeter, and this is because in the middle part of liquid-distributing plate, fluid flow stream journey is shorter.Two is borders, heat exchange area, and this is that flow resistance is less because borderline region heat exchanger tube is arranged less.And above setting can alleviate for these two positions the phenomenon causing fluid distrbution uneven at local, heat exchange area generation violent flow.
As shown in Figure 7, in the first embodiment, in the top view of liquid-distributing plate, when namely observing from the top of liquid-distributing plate to bottom, second area comprises the fork-shaped region intersected to form by two in-line regions first area being divided into four parts.Second area also comprises the region, edge of liquid-distributing plate 32.
Wherein, in fork-shaped region, in-line region is arranged along the length direction of liquid-distributing plate, and be positioned at the vault A place of arch template liquid-distributing plate 32, another in-line region is arranged along the direction of the length direction perpendicular to liquid-distributing plate.Wherein, the infall in two in-line regions is relative with the fluid inlet 311 of flooded evaporator 3.
In first embodiment, the bore dia of multiple equal liquid holes 321 of first area is all identical.Be uniformly distributed by the multiple equal liquid holes 321 in each part in four parts that fork-shaped region segmentation is formed.Particularly, multiple equal liquid holes 321 of each part with matrix distribution, the row of matrix and the axis being parallel of housing 31, the axes normal of matrix column and housing 31.
In first embodiment, the area not arranging the second area of equal liquid hole is S1, and the area of liquid-distributing plate is S2, preferably, and 0.1S2≤S1≤0.5S2.More preferably, 0.2S2≤S1≤0.4S2.Such as S1=0.3S2.The area rationally arranging second area is beneficial to fluid reasonable layout and flowing.
In addition, in multiple equal liquid holes 321 of the first embodiment, the distance of two adjacent equal liquid holes 321 is Lk, preferably, and 5cm≤Lk≤30cm.More preferably, 10cm≤Lk≤20cm.Such as Lk=15cm.Distance between equal liquid hole is rationally set, is beneficial to fluid reasonable layout and flowing equally, be also beneficial to the intensity ensureing liquid-distributing plate 32.
As shown in Figure 9, in the flooded evaporator 3 of the first embodiment, the distance of the vault A of liquid-distributing plate 32 and the peak of housing 31 is Lm, and the distance of the vault A of liquid-distributing plate 32 and the minimum point of housing 31 is Ln, preferably, and 0.7Lm >=Ln >=0.1Lm.More preferably, 0.4Lm >=Ln >=0.2Lm.Such as Ln=0.2Lm.Rationally Lm and Ln is set, is beneficial to fluid reasonable layout and flowing, and be beneficial to the layout of 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 greater than the space D 2 between the adjacent heat exchange tubes of the vault two side areas B of liquid-distributing plate.Preferably, 0.7D1 >=D2 >=0.1D1.More preferably, 0.6D1 >=D2 >=0.4D1.Such as, D2=0.5D1 can be made.This setting is beneficial to the fluid flowing into heat exchange area from equal discharge orifice 321 and is subject to uniform resistance, therefore, is beneficial to the reasonable layout of fluid in heat exchange area and flowing.It should be noted that, although the present embodiment is optimized for the density degree of the layout of arch template liquid-distributing plate exchange heat pipe, this setting is equally applicable to plate liquid-distributing plate or flap shape liquid-distributing plate.
In first embodiment, each edge of liquid-distributing plate 32 and housing 31 full weld.This is arranged so that the fluid flowed in housing 31 from fluid inlet 311 can only flow into heat exchange area by the equal liquid hole 321 through liquid-distributing plate 32, is beneficial to and controls the flow that liquid-distributing plate 32 edge flows into heat exchange area, therefore, is beneficial to tissue fluid flowing better.
First embodiment is passed through to improve the distribution of equal liquid hole 321 and the shape optimum of change liquid-distributing plate 32 flow distribution of heat exchange area, optimize the flow region of liquid-distributing plate 32 bottom of flooded evaporator 3 simultaneously, reduce heat exchange efficiency lower region, 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 the utility model second embodiment.
Second embodiment and the difference of the first embodiment are that the arrangement of the multiple equal liquid holes 421 on the liquid-distributing plate 42 of the second embodiment is different.
As shown in Figure 10, the liquid-distributing plate 42 of the second embodiment comprises the first area arranging multiple equal liquid hole 421 and the second area not arranging equal liquid hole.
In second embodiment, when observing from the top of liquid-distributing plate to bottom, second area comprises the closed area surrounded by first area.Particularly, closed area is border circular areas.This border circular areas is relative with the fluid inlet of full-liquid type parallel operation.Second area also comprises the region, edge of liquid-distributing plate 32.
In second embodiment, other unaccounted part all can with reference to the related content of the first embodiment.
3rd embodiment
Figure 11 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 3rd embodiment.
From the difference of the first embodiment and the second embodiment, 3rd embodiment is that the arrangement of the multiple equal liquid holes on liquid-distributing plate is different.
As shown in figure 11, in the 3rd embodiment, liquid-distributing plate comprises the first area arranging multiple equal liquid hole 521 and the second area not arranging equal liquid hole.The multiple equal liquid holes 521 being wherein positioned at first area are dislocatedly distributed.Particularly, multiple equal liquid hole 521 bore dia is identical, by becoming multirow to arrange with the direction of the axis being parallel of housing, often in row, the spacing of each adjacent equal liquid hole 521 is equal and also equal with the distance between the equal liquid hole 521 respectively led mutually in other row, but the equal liquid hole between two adjacent row is not layout in alignment, but wherein each equal liquid hole of a line between two close equal liquid holes of another row.
In 3rd embodiment, other unaccounted part all can with reference to the related content of the first embodiment and the second embodiment.
4th embodiment
Figure 12 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 4th embodiment.
To the difference of the 3rd embodiment, 4th embodiment and the first embodiment are that the arrangement of the multiple equal liquid holes on liquid-distributing plate is different.
As shown in figure 12, the multiple equal liquid holes 621 on the liquid-distributing plate of the 4th embodiment comprise multiple first equal liquid hole 6211 and multiple second equal liquid hole 6212.Liquid-distributing plate comprises the first area arranging multiple first equal liquid hole 6211 and the second area arranging the second equal liquid hole 6212.Wherein, the perforated area of the first equal liquid hole 6211 is greater than the perforated area of the second equal liquid hole 6212.Preferably, the ratio of 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, and 0.3dp1≤dp2 < dp1.The pressure that first area is born is less than the pressure that second area bears.
In 4th embodiment, when observing from the top of liquid-distributing plate to bottom, second area comprises the closed area surrounded by first area.Preferably, closed area is border circular areas.This border circular areas is relative with the fluid inlet of full-liquid type parallel operation.Certainly, the second area of the 4th embodiment also can comprise the fringe region of liquid-distributing plate surrounding, this fringe region can be arranged or do not arrange the second equal liquid hole.
In 4th embodiment, other unaccounted part all can with reference to the first embodiment to the related content of the 3rd embodiment.
5th embodiment
Figure 13 is the local arrangement schematic diagram of the equal liquid hole of liquid-distributing plate in the flooded evaporator of the utility model the 5th embodiment.
To the difference of the 4th embodiment, 5th embodiment and the first embodiment are that the arrangement of the multiple equal liquid holes on liquid-distributing plate is different.
As shown in figure 13, on the liquid-distributing plate of the 5th embodiment, multiple equal liquid hole 721 comprises multiple first equal liquid hole 7211 and multiple second equal liquid hole 7212.Liquid-distributing plate comprises the first area arranging multiple first equal liquid hole 7211 and the second area arranging the second equal liquid hole 7212.The fluid pressure born below first area is less than the fluid resistance had above the fluid pressure or first area that bear below second area and is greater than the fluid resistance had above second area.Preferably, the ratio of the area of second area and the area of first area is 1/3 ~ 2/3.
Wherein, the perforated area of the first equal liquid hole 7211 is greater than the perforated area of the second equal liquid hole 7212.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, and 0.3dp1≤dp2 < dp1.
In 5th embodiment, multiple equal liquid hole 721 on the whole with matrix distribution, the row of matrix and the axis being parallel of housing, the axes normal of matrix column and housing.In the present embodiment, the second area arranging the second equal liquid hole 7212 is the region relative with the fluid inlet of flooded evaporator.
In 5th embodiment, other unaccounted part all can with reference to the first embodiment to the related content of the 4th embodiment.
Above embodiment should not be construed as limiting the utility model, such as:
In multiple equal liquid hole non-uniform Distribution and first area arranges the first equal liquid hole, second area arranges the second equal liquid hole, the interval between the first equal liquid hole can also be made to be less than interval between the second equal liquid hole.
Also the distribution mode of equal liquid hole bore dia gradual change can be adopted to arrange multiple equal liquid hole.Such as: when the fluid of flooded evaporator is relative with in the middle part of liquid-distributing plate, multiple equal liquid hole can be made to be arranged in line by the direction with housing axis being parallel, bore dia diminishes after becoming greatly by row gradually from the middle part of liquid-distributing plate to both sides more gradually, and/or making multiple equal liquid hole by layout in column with the direction of housing axes normal, bore dia diminishes after becoming greatly from the position relative with fluid inlet of liquid-distributing plate to axial two ends gradually by row more gradually; Also the bore dia of multiple equal liquid hole can be made to become gradually laterally by the middle part of liquid-distributing plate (centered by the point that the axis of such as fluid inlet is crossing with liquid-distributing plate) diminish etc. gradually more greatly.When adopting the distribution mode of equal liquid hole bore dia gradual change, bore dia change will tend to be steady, and should not change rapidly.Preferably, the difference of the bore dia of the adjacent equal liquid hole that any two bore dias of multiple equal liquid hole are different is less than or equal to 3mm.More preferably, the difference of the bore dia of the adjacent equal liquid hole that any two bore dias of multiple equal liquid hole are different is less than or equal to 1mm.Certainly, have in the liquid-distributing plate of multiple equal liquid holes of different bore dias in other form, bore dia change also can be comparatively steady, and the difference meeting the bore dia of the different adjacent equal liquid hole of any two bore dias is less than or equal to the 3mm even requirement of 1mm.
Known according to above description, the utility model optimizes the liquid-distributing plate structure of flooded evaporator and the perforate mode of equal liquid hole thereof, optimize the flow field of fluid inlet to liquid-distributing plate on the one hand, reduce flow resistance, enhance the equal liquid ability of liquid-distributing plate on the other hand, namely by reasonable distribution flow, the region that evaporimeter internal heat efficiency is lower is reduced.Each embodiment at least one of has the following advantages above:
1, for optimizing the equal liquid effect of liquid-distributing plate, make multiple equal liquid also nonuniform mutation operator, the mode of equal liquid hole reduces the flow of flowing intense regions such as to adopt the mode of subregion or the mode of bore dia gradual change to arrange to liquid-distributing plate.
2, arch template liquid-distributing plate is compared to plate liquid-distributing plate, the flap type liquid-distributing plate of same cross-sectional girth, the flow area in the space that itself and housing surround is larger, therefore, the arch template liquid-distributing plate flow resistance adopting same material to make is less, enhances the heat exchange efficiency of flooded evaporator.Adopt arch template liquid-distributing plate that fluid flowing path is changed, the fluid flowed out from the equal liquid hole of arch template liquid-distributing plate can be set to flow towards the normal direction of liquid-distributing plate, fluid is flowed more disperse, in heat exchange area, distribution is more even, also enhance the heat exchange of fluid and heat exchanger tube, improve the heat exchange efficiency of flooded evaporator.
When 3, arranging heat exchanger tube in flooded evaporator, for the heat exchanger tube that the center of liquid-distributing plate distributes, the heat exchange tube of liquid-distributing plate two side areas distribution is closeer, the resistance that the fluid flowing into heat exchange area from equal liquid hole can be made to be subject to is evenly distributed, be beneficial to fluid well-distributing distribution, thus strengthen the heat exchange efficiency of flooded evaporator.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (23)
1. the liquid-distributing plate of a flooded evaporator, described liquid-distributing plate arranges multiple equal liquid hole, it is characterized in that, described multiple equal liquid hole nonuniform mutation operator on described liquid-distributing plate, the perforated area born below described liquid-distributing plate in the position unit are of less fluid pressure is less than to make the perforated area born below described liquid-distributing plate in the position unit are of larger fluid pressure, and/or the perforated area perforated area had above described liquid-distributing plate in the position unit are of less fluid resistance being less than to have above described liquid-distributing plate in the position unit are of larger fluid resistance.
2. liquid-distributing plate according to claim 1, is characterized in that, the bore dia of described multiple equal liquid hole is different and/or density degree is different.
3. liquid-distributing plate according to claim 2, is characterized in that, described multiple equal liquid hole is arranged in the subregion of described liquid-distributing plate; Or described multiple equal liquid hole presses bore dia and/or density degree subregion is arranged; Or described multiple equal liquid hole presses bore dia and/or density degree gradual change is arranged.
4. liquid-distributing plate according to claim 3, is characterized in that, described multiple equal liquid hole is arranged in the subregion of described liquid-distributing plate, and described liquid-distributing plate comprises the first area arranging described multiple equal liquid hole and the second area not arranging described equal liquid hole.
5. liquid-distributing plate according to claim 4, is characterized in that, the area not arranging the described second area of described equal liquid hole is S1, and the area of described liquid-distributing plate is S2, wherein, and 0.1S2≤S1≤0.5S2.
6. liquid-distributing plate according to claim 3, it is characterized in that, described multiple equal liquid hole presses bore dia and/or density degree subregion is arranged, wherein, described multiple equal liquid hole comprises multiple first equal liquid hole and multiple second equal liquid hole, described liquid-distributing plate comprises first area and second area, described multiple first equal liquid hole is arranged at described first area, described multiple second equal liquid hole is arranged at described second area, the perforated area of the described first equal liquid hole interval be greater than between the perforated area of described second equal liquid hole and/or described first equal liquid hole is less than the interval between described second equal liquid hole.
7. liquid-distributing plate according to claim 6, it is characterized in that, the perforated area of described first equal liquid hole is greater than the perforated area of described second equal liquid hole, the bore dia of described first equal liquid hole is dp1, the bore dia of described second equal liquid hole is dp2, wherein, 0.3dp1≤dp2 < dp1.
8. the liquid-distributing plate according to any one of claim 4 to 7, is characterized in that, described first area comprises and the fluid inlet of described full-liquid type heat exchanger and liquid-distributing plate Edge Distance region far away; Described second area comprises the region relative with the fluid inlet of described full-liquid type heat exchanger, and/or is positioned at the region at described liquid-distributing plate edge.
9. the liquid-distributing plate according to any one of claim to 4 to 7, is characterized in that, when observing from the top of described liquid-distributing plate to bottom, described second area comprises the closed area surrounded by described first area; Or when observing from the top of described liquid-distributing plate to bottom, described second area comprises the fork-shaped region intersected to form by two in-line regions described first area being divided into four parts.
10. liquid-distributing plate according to claim 9, is characterized in that, described second area comprises the region, edge of described liquid-distributing plate.
11. liquid-distributing plates according to claim 9, is characterized in that, described second area comprises closed area, and when observing from the top of described liquid-distributing plate to bottom, described closed area is border circular areas; Or described second area comprises fork-shaped region, the in-line region in described fork-shaped region is arranged along the length direction of described liquid-distributing plate, and another in-line region is arranged along the direction of the length direction perpendicular to described liquid-distributing plate.
12. liquid-distributing plates according to any one of claim to 4 to 7, it is characterized in that, the ratio of the area of described second area and the area of described first area is 1/3 ~ 2/3.
13. liquid-distributing plates according to any one of claim 1 to 7, is characterized in that, in described multiple equal liquid hole, the distance of adjacent equal liquid hole is Lk, wherein, and 5cm≤Lk≤30cm.
14. liquid-distributing plates according to claim 3, it is characterized in that, described multiple equal liquid hole is pressed bore dia gradual change and is arranged, wherein, described multiple equal liquid hole is arranged in line by the direction of the axis being parallel of the housing with described flooded evaporator, and the bore dia of described multiple equal liquid hole diminishes after becoming greatly by row gradually from the middle part of described liquid-distributing plate to both sides more gradually; And/or described multiple equal liquid hole is by layout in column with the direction of the axes normal of described housing, and the bore dia of described multiple equal liquid hole diminishes after becoming greatly from the middle part of described liquid-distributing plate to axial two ends gradually by row more gradually.
15. liquid-distributing plates according to claim 3, is characterized in that, described multiple equal liquid hole is pressed bore dia gradual change and arranged, wherein, the bore dia of described multiple equal liquid hole becomes gradually from the middle part of described liquid-distributing plate towards surrounding and diminishes gradually more greatly.
16. liquid-distributing plates according to any one of claim 1 to 7,14 and 15, is characterized in that, the difference of the bore dia of the adjacent equal liquid hole that any two bore dias of described multiple equal liquid hole are different is less than or equal to 3mm.
17. liquid-distributing plates according to any one of claim 1 to 7,14 and 15, it is characterized in that, described liquid-distributing plate is arch template liquid-distributing plate, plate liquid-distributing plate or flap type liquid-distributing plate.
18. liquid-distributing plates according to claim 17, is characterized in that, described liquid-distributing plate is arch template liquid-distributing plate, and the cross sectional shape of described liquid-distributing plate is circular arc.
19. 1 kinds of flooded evaporators, comprise housing, liquid-distributing plate and heat exchanger tube, described liquid-distributing plate is arranged at described enclosure interior and is positioned at above the bottom of described housing, described heat exchanger tube is arranged between described housing and described liquid-distributing plate, it is characterized in that, described liquid-distributing plate is the liquid-distributing plate according to any one of claim 1 to 18.
20. flooded evaporators according to claim 19, it is characterized in that, described liquid-distributing plate is arch template liquid-distributing plate, the distance of the vault of described liquid-distributing plate and the peak of described housing is Lm, the distance of the vault of described liquid-distributing plate and the minimum point of described housing is Ln, wherein, 0.7Lm >=Ln >=0.1Lm.
21. flooded evaporators according to claim 19 or 20, it is characterized in that, the space D 1 in the heat-exchanging tube bundle in the upper center region of described liquid-distributing plate between adjacent heat exchange tubes is greater than the space D 2 in the heat-exchanging tube bundle of the two side areas of described liquid-distributing plate between adjacent heat exchange tubes.
22. flooded evaporators according to claim 21, is characterized in that, 0.7D1 >=D2 >=0.1D1.
23. flooded evaporators according to claim 19 or 20, is characterized in that, each edge of described liquid-distributing plate and described housing full weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956453.1U CN205156444U (en) | 2015-11-26 | 2015-11-26 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956453.1U CN205156444U (en) | 2015-11-26 | 2015-11-26 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN205156444U true CN205156444U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520956453.1U Active CN205156444U (en) | 2015-11-26 | 2015-11-26 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387652A (en) * | 2015-11-26 | 2016-03-09 | 珠海格力电器股份有限公司 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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2015
- 2015-11-26 CN CN201520956453.1U patent/CN205156444U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387652A (en) * | 2015-11-26 | 2016-03-09 | 珠海格力电器股份有限公司 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
| CN105387652B (en) * | 2015-11-26 | 2018-03-20 | 珠海格力电器股份有限公司 | Liquid equalizing plate of flooded evaporator and flooded evaporator |
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