CN109469994A - Downward film evaporator and air-conditioning system - Google Patents
Downward film evaporator and air-conditioning system Download PDFInfo
- Publication number
- CN109469994A CN109469994A CN201811352078.4A CN201811352078A CN109469994A CN 109469994 A CN109469994 A CN 109469994A CN 201811352078 A CN201811352078 A CN 201811352078A CN 109469994 A CN109469994 A CN 109469994A
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- CN
- China
- Prior art keywords
- stream unit
- equal stream
- inlet
- equal
- film evaporator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/028—Evaporators having distributing means
-
- 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
- F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
Abstract
The present invention relates to a kind of downward film evaporator and air-conditioning system, downward film evaporator includes: inlet, for introducing refrigerant to be exchanged heat；First heat exchanging part (1), is located at the lower section of inlet, the refrigerant heat exchange for being discharged with inlet；Equal stream unit (3), it is located between inlet and the first heat exchanging part (1), equal stream unit (3) is equipped with multiple through-holes for the refrigerant that circulates, and equal stream unit (3) is at least partially along the side's of being directed downward inclination far from inlet.Using the technical solution of the application, equal stream unit is arranged to position of the flow direction far from inlet for enabling to liquid refrigerants more with being inclined relative to horizontal, so that liquid refrigerants is uniformly distributed in the first heat exchanging part.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of downward film evaporator and air-conditioning system.
Background technique
Fig. 1 shows a kind of structural schematic diagram of the downward film evaporator of the relevant technologies, and Fig. 2 shows drops shown in FIG. 1
The cross section structure schematic diagram of film-type evaporation, Fig. 3 show the schematic diagram of internal structure of downward film evaporator shown in FIG. 1.Falling liquid film
Formula evaporator includes shell 5, the inlet tube 7 for conveying refrigerant to be exchanged heat into shell 5, for exporting with inlet tube 7
The heat exchanging part 1 that refrigerant exchanges heat and the spout member 6 for exporting the refrigerant after exchanging heat.
Multiple lower sections changed portion 1 and be successively set on the outlet of inlet tube 7 along the vertical direction, downward film evaporator further includes setting
Cloth liquid component 8 between heat exchanging part 1 and the outlet of inlet tube 7.Cloth liquid component 8 is used for the liquid of the outlet output of inlet tube 7
State refrigerant is distributed to the heat exchanger components 1 of 8 lower section of cloth liquid component.
It is at least partly evaporated to gaseous coolant after exchanging heat with heat exchanger components 1, gaseous coolant is discharged to drop through spout member 6
The outside of kestner long-tube evaporator.
Downward film evaporator further includes the homogenizing plate 2 being arranged between two neighboring heat exchanging part 1, and homogenizing plate 2 is for collecting
Hydraulic refrigerant after exchanging heat with the heat exchanger components 1 above it, and the hydraulic refrigerant is distributed on heat exchanger components 1 below.
Heat exchanger components 1 include more horizontally extending heat exchanger tubes 3.Downward film evaporator further includes support plate 4, branch
Fagging 4 is equipped with mounting hole, and heat exchanger tube 3 is threaded through in the mounting hole of support plate 4, and support plate 4 is connect with shell 5, will change pipe 3
It is fixed in shell 5.
It has been evenly arranged multiple through-holes on homogenizing plate 2, has been collected at the position of the outlet of the close inlet tube 7 of homogenizing plate 2
Liquid refrigerants it is more, the hydraulic refrigerant of the through-hole in the exit of the close inlet tube 7 of corresponding homogenizing plate 2 discharge is also more,
The liquid refrigerants for flowing to the position of the outlet far from inlet tube 7 is reduced accordingly, therefore there are cloth liquid for the homogenizing plate of the relevant technologies
Non-uniform problem, and then the heat exchange efficiency of downward film evaporator is caused to decline.
Summary of the invention
The present invention is intended to provide a kind of downward film evaporator and air-conditioning system, to improve stream portion existing in the prior art
The non-uniform problem of part cloth liquid.
According to an aspect of an embodiment of the present invention, the present invention provides a kind of downward film evaporator, downward film evaporators
Include:
Inlet, for introducing refrigerant to be exchanged heat；
First heat exchanging part is located at the lower section of inlet, the refrigerant heat exchange for being discharged with inlet；
Equal stream unit is located between inlet and the first heat exchanging part, and equal stream unit is equipped with for the multiple logical of the refrigerant that circulates
Hole, equal stream unit is at least partially along the side's of being directed downward inclination far from inlet.
Optionally, equal stream unit includes:
First equal stream unit extends along first direction far from inlet；
Second equal stream unit, in a second direction far from inlet extend, the second equal stream unit extend in a second direction away from
With a distance from being extended in a first direction less than or equal to the first equal stream unit.
Optionally, the distance that the second equal stream unit extends in a second direction is extended in a first direction less than the first equal stream unit
Distance, the angle between the second equal stream unit and horizontal plane is less than the angle between the first equal stream unit and horizontal plane.
Optionally, first direction is opposite with second direction.
Optionally, the density of through-hole is gradually increased along the direction far from inlet.
Optionally, equal stream unit includes:
First equal stream unit extends along first direction far from inlet；
Second equal stream unit, in a second direction far from inlet extend, the second equal stream unit extend in a second direction away from
With a distance from extending in a first direction less than the first equal stream unit, the change rate of the density of the through-hole on the second equal stream unit is less than
The change rate of the density of through-hole on first equal stream unit.
Optionally, the aperture of through-hole is gradually increased along the direction far from inlet.
Optionally, equal stream unit includes:
First equal stream unit extends along first direction far from inlet；
Second equal stream unit, in a second direction far from inlet extend, the second equal stream unit extend in a second direction away from
With a distance from extending in a first direction less than the first equal stream unit, the change rate in the aperture of the through-hole on the second equal stream unit is less than
The change rate in the aperture of the through-hole on the first equal stream unit.
Optionally, downward film evaporator further include:
Second heat exchanging part is located between inlet and equal stream unit, the refrigerant heat exchange for being discharged with inlet；
Cloth liquid component, is located between inlet and the second heat exchanging part, and the refrigerant for inlet to be discharged is distributed in second
In heat exchanging part.
According to another aspect of the present invention, a kind of air-conditioning system is additionally provided, air-conditioning system includes that above-mentioned falling film type steams
Send out device.
Using the technical solution of the application, equal stream unit is arranged with being inclined relative to horizontal and enables to liquid refrigerants
More position of the flow direction far from inlet, so that liquid refrigerants is uniformly distributed in the first heat exchanging part.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 shows the structural schematic diagram of the downward film evaporator of the relevant technologies；
Fig. 2 shows the cross section structure schematic diagrams of falling film type evaporation shown in FIG. 1；
Fig. 3 shows the schematic diagram of internal structure of downward film evaporator shown in FIG. 1；
Fig. 4 shows the structural schematic diagram of the downward film evaporator of one embodiment of the present of invention；And
Fig. 5 shows the structural schematic diagram of the downward film evaporator of another embodiment of the invention.
In figure:
1, the first heat exchanging part；2, the second heat exchanging part；3, equal stream unit；31, the first equal stream unit；32, the second equal stream unit；
4, support plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 4 shows the structural schematic diagram of the downward film evaporator of the present embodiment.As shown in connection with fig. 4, the drop of the present embodiment
Kestner long-tube evaporator include the first heat exchanging part 1 for introducing the inlet of refrigerant to be exchanged heat, the lower section for being located at inlet and
The equal stream unit 3 being located between inlet and the first heat exchanging part 1, equal stream unit 3 are equipped with multiple through-holes for the refrigerant that circulates, with
The liquid refrigerants collected is distributed to the first heat exchanging part 1 below.Equal stream unit 3 is at least partially along the side far from inlet
To tilting downward.
Due to refrigerant towards far from inlet direction flowing during, part refrigerant by through-hole flow to flows
First heat exchanging part 1 of the lower section of component 3, thus the liquid refrigerants that can be connected to of the first heat exchanging part 1 of the position far from inlet compared with
It is few, equal stream unit 3 is arranged to position of the flow direction far from inlet for enabling to liquid refrigerants more with being inclined relative to horizontal
It sets, so that liquid refrigerants is uniformly distributed in the first heat exchanging part 1.
First heat exchanging part 1 includes horizontally extending multiple heat exchanger tubes, and heat exchanger tube is changed for circulating with liquid refrigerants
Hot medium.
Downward film evaporator further includes the second heat exchanging part 2 being located between inlet and equal stream unit 3, the second heat exchanging part 2
Hydraulic refrigerant heat exchange for being introduced with inlet.
Second heat exchanging part 2 includes horizontally extending multiple heat exchanger tubes, and heat exchanger tube is changed for circulating with liquid refrigerants
Hot medium.
Downward film evaporator further includes support plate 4, and support plate 4 is equipped with mounting hole, and heat exchanger tube is threaded through in mounting hole, with
It is immobilized in the shell by support plate 4.
Equal stream unit 3 sets the top of the first heat exchanging part 1, and is located at the lower section of the second heat exchanging part 2.Equal stream unit 3 is for receiving
Collect the liquid refrigerants flow down from the second heat exchanging part 2, and the refrigerant being collected into is distributed in the first heat exchanging part 1.
Equal stream unit 3 includes plate-shaped member, and plate-shaped member is equipped with multiple through-holes.Optionally, equal stream unit 3 further includes edge
The stop member that the edge of plate-shaped member extends, for stopping liquid refrigerants to flow out from the edge of plate-shaped member.
Fig. 5 shows the structural schematic diagram of the downward film evaporator of another alternative embodiment.As shown in figure 5, equal stream unit 3
Second extended including the first equal stream unit 31 for extending along first direction far from inlet and in a second direction far from inlet
Equal stream unit 32, the distance that the second equal stream unit 32 extends in a second direction are less than or equal to the first equal stream unit 31 along first party
To the distance of extension.
The distance that second equal stream unit 32 extends in a second direction is extended in a first direction less than the first equal stream unit 31
Distance, the angle between the second equal stream unit 32 and horizontal plane is less than the angle between the first equal stream unit 31 and horizontal plane.This
In embodiment, first direction is opposite with second direction.
The length of first equal stream unit 31 is larger, by the larger of the inclined angle setting of the first equal stream unit 31, favorably
It is rapidly flowed towards the position far from inlet in liquid refrigerants, so that the through-hole of each position of the first equal stream unit 31 flows out
Liquid refrigerants region equality.
In an alternative embodiment, the density of through-hole is gradually increased along the direction far from inlet.Equal stream unit 3
The liquid refrigerants that can be assigned to further away from the position of inlet is fewer, and the position closer to inlet of equal stream unit 3 can
The liquid refrigerants being assigned to is more, will be close to the relatively small of the density setting of the through-hole of the position of inlet, is conducive to liquid
Refrigerant is distributed to the position far from inlet so that the liquid refrigerants of each position of stream unit 3 output can region it is flat
?.
Further, the change rate of the density of the through-hole on the second equal stream unit 32 is less than logical on the first equal stream unit 31
The change rate of the density in hole.
In an alternative embodiment, the aperture of through-hole is gradually increased along the direction far from inlet.
The liquid refrigerants that the position further away from inlet of equal stream unit 3 can be assigned to is fewer, and equal stream unit 3 more leans on
The liquid refrigerants that the position of nearly inlet can be assigned to is more, will be close to the phase of the aperture setting of the through-hole of the position of inlet
To smaller, be conducive to liquid refrigerants and distribute to the position far from inlet, so that the liquid of each position of stream unit 3 output
State refrigerant can region it is average.
Further, the change rate in the aperture of the through-hole on the second equal stream unit 32 is less than logical on the first equal stream unit 31
The change rate in the aperture in hole.
Not placed in the middle for inlet or eccentric more serious occasion, when equal stream unit 3 is horizontally disposed, since fluid flows through
The flow velocity spread when equal stream unit 3 to both sides is substantially uniform, causes that remotely the upper scale of construction of equal stream unit 3 is inadequate from inlet,
So that 3 cloth liquid one end of stream unit is rapid, one end is slow, causes the serious inhomogeneities of cloth liquid.
In the present embodiment, equal stream unit 3 is in tilted layout, resistance is increased compared with near-end point to inlet, to farther away one end
Increase certain tilt acceleration, both ends is enabled uniformly to reach both ends in the time similar in approximation, avoids above-mentioned ask
Uneven cloth liquid caused by topic, enables the overall length region uniformly and effectively falling film evaporation of lower section heat exchanger tube.Through sunykatuib analysis,
Secondary 3 tilt angle of equal stream unit is to be best no more than 3 °.
In the case where inlet is not placed in the middle or eccentric more serious, one is suitably reasonably tilted according to equal 3 length of stream unit
Fixed angle, so that pouring through equal stream unit 3 drop, the fluid on heat exchanger tube is uniform and flow velocity is consistent.Pour fluid drop
The liquid film being formed by heat exchanger tube evenly and completely, thus further improve downward film evaporator heat transfer effect.Reduce
Influence of the position of flow and inlet to cloth liquid, so that downward film evaporator internal structure is more perfect.
According to another invention of the application, a kind of air-conditioning system is additionally provided, which includes above-mentioned falling film type
Evaporator.
The foregoing is merely exemplary embodiment of the present invention, are not intended to limit the invention, all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of downward film evaporator characterized by comprising
Inlet, for introducing refrigerant to be exchanged heat；
First heat exchanging part (1), is located at the lower section of the inlet, the refrigerant heat exchange for being discharged with the inlet；And
Equal stream unit (3), is located between the inlet and first heat exchanging part (1), and the equal stream unit (3) is equipped with and is used for
Multiple through-holes of circulation refrigerant, the equal stream unit (3) is at least partially along the side's of being directed downward inclination far from the inlet.
2. downward film evaporator according to claim 1, which is characterized in that the equal stream unit (3) includes:
First equal stream unit (31), extends along first direction far from the inlet；
Second equal stream unit (32) extends far from the inlet in a second direction, and the second equal stream unit (32) is along described
The distance that second direction extends is less than or equal to the distance that the described first equal stream unit (31) extends in a first direction.
3. downward film evaporator according to claim 2, which is characterized in that the second equal stream unit (32) is along described
The distance that two directions extend is less than the distance that the described first equal stream unit (31) extends in a first direction, the second equal stream unit
(32) angle between horizontal plane is less than the angle between the described first equal stream unit (31) and the horizontal plane.
4. downward film evaporator according to claim 2, which is characterized in that the first direction and the second direction phase
Instead.
5. downward film evaporator according to claim 1, which is characterized in that the density of the through-hole is along far from the feed liquor
The direction of mouth is gradually increased.
6. downward film evaporator according to claim 5, which is characterized in that the equal stream unit (3) includes:
First equal stream unit (31), extends along first direction far from the inlet；
Second equal stream unit (32) extends far from the inlet in a second direction, and the second equal stream unit (32) is along described
The distance that second direction extends is less than the distance that extends in a first direction of the described first equal stream unit (31), the described second equal stream portion
The change rate of the density of through-hole on part (32) is less than the change rate of the density of the through-hole on the described first equal stream unit (31).
7. downward film evaporator according to claim 1, which is characterized in that the aperture of the through-hole is along far from the feed liquor
The direction of mouth is gradually increased.
8. downward film evaporator according to claim 7, which is characterized in that the equal stream unit (3) includes:
First equal stream unit (31), extends along first direction far from the inlet；
Second equal stream unit (32) extends far from the inlet in a second direction, and the second equal stream unit (32) is along described
The distance that second direction extends is less than the distance that extends in a first direction of the described first equal stream unit (31), the described second equal stream portion
The change rate in the aperture of the through-hole on part (32) is less than the change rate in the aperture of the through-hole on the described first equal stream unit (31).
9. downward film evaporator according to claim 1, which is characterized in that further include:
Second heat exchanging part (2) is located between the inlet and the equal stream unit (3), for what is be discharged with the inlet
Refrigerant heat exchange；
Cloth liquid component is located between the inlet and the second heat exchanging part (2), and the refrigerant for inlet to be discharged is distributed in institute
It states on the second heat exchanging part (2).
10. a kind of air-conditioning system, which is characterized in that including downward film evaporator described in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352078.4A CN109469994A (en) | 2018-11-14 | 2018-11-14 | Downward film evaporator and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352078.4A CN109469994A (en) | 2018-11-14 | 2018-11-14 | Downward film evaporator and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109469994A true CN109469994A (en) | 2019-03-15 |
Family
ID=65672952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811352078.4A Pending CN109469994A (en) | 2018-11-14 | 2018-11-14 | Downward film evaporator and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109469994A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3970512A (en) * | 1971-08-09 | 1976-07-20 | Ismail Zulfugarovich Makinsky | Falling film evaporator |
| CN202080914U (en) * | 2011-05-17 | 2011-12-21 | 浙江大学 | Composite solar seawater desalting device |
| CN202133192U (en) * | 2011-04-29 | 2012-02-01 | 重庆美的通用制冷设备有限公司 | Refrigerant liquid distributing device for falling film evaporator |
| CN104324511A (en) * | 2014-10-11 | 2015-02-04 | 沈阳航空航天大学 | Flow-equalization tilted plate liquid distributor |
| CN204214172U (en) * | 2014-10-13 | 2015-03-18 | 堃霖冷冻机械(上海)有限公司 | A kind of cold-producing medium distribution structure of downward film evaporator |
| CN108592458A (en) * | 2018-07-10 | 2018-09-28 | 珠海格力电器股份有限公司 | A kind of current equalizing structure, downward film evaporator and handpiece Water Chilling Units |
-
2018
- 2018-11-14 CN CN201811352078.4A patent/CN109469994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3970512A (en) * | 1971-08-09 | 1976-07-20 | Ismail Zulfugarovich Makinsky | Falling film evaporator |
| CN202133192U (en) * | 2011-04-29 | 2012-02-01 | 重庆美的通用制冷设备有限公司 | Refrigerant liquid distributing device for falling film evaporator |
| CN202080914U (en) * | 2011-05-17 | 2011-12-21 | 浙江大学 | Composite solar seawater desalting device |
| CN104324511A (en) * | 2014-10-11 | 2015-02-04 | 沈阳航空航天大学 | Flow-equalization tilted plate liquid distributor |
| CN204214172U (en) * | 2014-10-13 | 2015-03-18 | 堃霖冷冻机械(上海)有限公司 | A kind of cold-producing medium distribution structure of downward film evaporator |
| CN108592458A (en) * | 2018-07-10 | 2018-09-28 | 珠海格力电器股份有限公司 | A kind of current equalizing structure, downward film evaporator and handpiece Water Chilling Units |
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Application publication date: 20190315 |
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