CN107504721A - Multilayer flooded evaporator and refrigeration, air-conditioning system - Google Patents
Multilayer flooded evaporator and refrigeration, air-conditioning system Download PDFInfo
- Publication number
- CN107504721A CN107504721A CN201610419567.1A CN201610419567A CN107504721A CN 107504721 A CN107504721 A CN 107504721A CN 201610419567 A CN201610419567 A CN 201610419567A CN 107504721 A CN107504721 A CN 107504721A
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- Prior art keywords
- tube
- heat
- pallet
- multilayer
- cylinder
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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
- F25B39/022—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
- F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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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 present invention provides a kind of multilayer flooded evaporator, including cylinder, contains refrigerant inside it；Tube sheet, it is sealedly attached to the both ends of cylinder；End cap, it is connected on tube sheet, and by the closed at both ends of cylinder；Heat exchanger tube, it is installed in the form of tube bank in cylinder, carries out the refrigerating medium of heat exchange with refrigerant for carrying；Refrigerant feed tube, oil return pipe, air intake duct, above-mentioned three are installed on barrel wall；Also include positioned at inner barrel multiple pallets that direction is arranged in parallel along its longitudinal axis, wherein, heat exchanger tube is divided into multilayer in cylinder, form Multi-layer exchanging heat tube bank, every layer of heat-exchanging tube bundle in addition to undermost heat-exchanging tube bundle is arranged in a pallet, and air flue is provided between each pallet and the heat-exchanging tube bundle of its underpart.Refrigeration, air-conditioning system using above-mentioned multilayer flooded evaporator is also provided.Present invention reduces the influence of bubble exchange hot property and absorbing gas belt liquid, while reduce the influence of hydrostatic column exchange hot property.
Description
Technical field
The invention belongs to air-conditioning and Refrigeration Engineering technical field, specifically, be related to a kind of multilayer flooded evaporator and
Refrigeration, air-conditioning system.
Background technology
Flooded evaporator because heat exchange property it is higher, stable the advantages that, refrigeration, field of air conditioning obtain extensively should
With.But refrigerant can produce a large amount of bubbles during heat-exchanging tube bundle surface evaporation in flooded evaporator, these bubbles can not
Discharge in time, progressively collects in upward flotation, flows through each heat exchanger tube in top, dramatically increases top heat exchange pipe outer wall heat exchange
Thermal resistance, a large amount of foams are particularly formed at the top of heat-exchanging tube bundle so that the heat exchange property of heat exchanger tube is decreased obviously, while cause compared with
More absorbing gas belt liquid.And traditional flooded evaporator refrigerant charge is big（The refrigerant level of evaporator tube is basic
Maintain an equal level with row's heat exchanger tube topmost or lower slightly）, the refrigerant hydrostatic column of formation certain altitude in evaporator tube.Due to quiet
The presence of fluid column so that the heat transfer temperature difference of base of evaporator heat exchanger tube reduces, and also reduces heat exchange property.
The content of the invention
The present invention provides a kind of multilayer flooded evaporator and refrigeration, air-conditioning system, to overcome bubble, hydrostatic column heat exchanging
The influence of performance and absorbing gas belt liquid, so as to lift the heat exchange property of flooded evaporator and reliability, while ensure that refrigerant fills
Fluence will not increase.
In order to solve the above technical problems, the present invention is achieved using following technical scheme：
A kind of multilayer flooded evaporator, including：Cylinder, refrigerant is contained inside it；Tube sheet, it is sealedly attached to the cylinder
Both ends；End cap, it is connected on the tube sheet, and by the closed at both ends of the cylinder；Heat exchanger tube, it is installed in the form of tube bank
In the cylinder, the refrigerating medium of heat exchange is carried out with refrigerant for carrying；Refrigerant feed tube, oil return pipe, air intake duct, it is above-mentioned
Three is installed on the barrel wall；Also include positioned at the inner barrel multiple supports that direction is arranged in parallel along its longitudinal axis
Disk, wherein, the heat exchanger tube is divided into multilayer in the cylinder, forms Multi-layer exchanging heat tube bank, except undermost heat-exchanging tube bundle it
Every layer of outer heat-exchanging tube bundle is arranged in a pallet, air flue is provided between each pallet and the heat-exchanging tube bundle of its underpart, often
Refrigerant in one pallet is by the refrigerating medium heating evaporation in corresponding heat-exchanging tube bundle.
Further, each pallet is provided with side plate along the both sides on its width, the top edge of the side plate and
The top edge of the heat-exchanging tube bundle of respective layer flushes with or slightly higher than its top edge.
Further, the refrigerant feed tube is located at the top of the superiors' pallet.
Further, the oil return pipe is connected to the cylinder lowest part.
Further, the heat-exchanging tube bundle in each pallet by 1~5 row's set of heat exchange tubes into.
Further, the bottom of the tube sheet is provided with bearing, for supporting the whole evaporator.
Further, the length of the pallet is identical with the length of the heat exchanger tube, and width depends on each layer of heat exchanger tube
Quantity.
Further, the pallet is consolidated at the both ends close to the tube sheet with the Tube-sheet Welding in its longitudinal direction
It is fixed.
Further, the pallet is additionally provided with middle interconnecting piece in the near middle of its length direction, the middle interconnecting piece
It is welded and fixed with the cylinder inboard wall.
A kind of refrigeration system, using above-mentioned multilayer flooded evaporator.
A kind of air-conditioning system, using above-mentioned multilayer flooded evaporator.
Compared with prior art, the advantages and positive effects of the present invention are：
Present invention reduces the influence of bubble exchange hot property and absorbing gas belt liquid, while reduce the shadow of hydrostatic column exchange hot property
Ring, and refrigerant charge remains basically stable or reduced with traditional flooded evaporator.
Due to setting air flue, bubble caused by evaporation is easy to discharge in time by air flue, it is therefore prevented that bubble exchange is hot
The adverse effect of energy；Also solves air-breathing solution dehumidification while migration more serious caused by a large amount of bubbles converge.By pallet by heat exchanger tube
It is separated into Multi-layer exchanging heat to restrain, the flooded evaporator small equivalent to one in every layer of pallet, the heat-exchanging tube bundle in every layer of pallet
Only by 1~5 row's set of heat exchange tubes into compared with traditional flooded evaporator, greatly reducing refrigerant height of static liquid column so that
Influence of the hydrostatic column to the heat transfer temperature difference of base of evaporator heat exchanger tube greatly reduces, so as to improve heat exchange property.Each layer pallet
Air flue is set between the heat-exchanging tube bundle of its underpart, passage is provided between cylinder and pallet, this allows for refrigerant charge not
The charging amount of traditional flooded evaporator can be higher than.
A series of concept of reduced forms is introduced in Summary, this will enter in specific embodiment part
One step describes in detail.The key that present invention part is not meant to attempt to limit technical scheme claimed is special
Seek peace essential features, do not mean that the protection domain for attempting to determine technical scheme claimed more.
Below in conjunction with accompanying drawing, advantages and features of the invention are described in detail.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the overall structure diagram of multilayer flooded evaporator specific embodiment of the present invention；
Fig. 2 is the cross-sectional view of multilayer flooded evaporator specific embodiment of the present invention；
In figure：1st, cylinder；2nd, air intake duct；3rd, refrigerant feed tube；4th, heat exchanger tube；5th, pallet；51st, side plate；6th, air flue；7th, oil return
Pipe；8th, tube sheet；9th, refrigerating medium outlet；10th, refrigerating medium inlet tube；11st, end cap；12nd, bearing.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and examples pair
The present invention is described in further detail.It should be appreciated that embodiment described herein is only to explain the present invention, and do not have to
It is of the invention in limiting.
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And it will be apparent to one skilled in the art that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed structure will be proposed in following description.Obviously, execution of the invention is simultaneously
It is not limited to the specific details that those skilled in the art is familiar with.Presently preferred embodiments of the present invention is described in detail as follows, but
In addition to these detailed descriptions, the present invention can also have other embodiment.
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.
The purpose of the embodiment of the present invention solves bubble, hydrostatic column to flooded evaporator heat exchange property and absorbing gas belt liquid
Influence, improve the heat exchange property and reliability of flooded evaporator.The embodiment of the present invention provides a kind of multilayer full-liquid type evaporation
Device, by setting multiple pallets in inner barrel, and air flue is set between pallet and the heat-exchanging tube bundle of its underpart, reduces bubble pair
The influence of heat exchange property and absorbing gas belt liquid, while reduce the influence of hydrostatic column exchange hot property, and refrigerant charge and biography
The flooded evaporator of system remains basically stable or reduced.With specific reference to being discussed in detail for example below.
With reference to figure 1,2, be according to the overall structure diagram of multilayer flooded evaporator one embodiment of the present invention and
Cross-sectional view, multilayer flooded evaporator, including cylinder 1, contain refrigerant inside it, usual refrigerant level substantially with
Topmost row's heat exchanger tube 4 is fair or lower slightly；Tube sheet 8, is sealedly attached to the both ends of cylinder 1, and the bottom of tube sheet 8 is provided with bearing
12, for supporting whole evaporator；End cap 11, it is connected on tube sheet 8, and by the closed at both ends of cylinder 1；Heat exchanger tube 4, with tube bank
Form be installed in cylinder 1, for carry with refrigerant carry out heat exchange refrigerating medium；Set on Fig. 1 left side end cap 11
There are refrigerating medium inlet tube 10 and refrigerating medium outlet 9, and connected respectively with heat exchanger tube 4.Direction is put down along its longitudinal axis inside cylinder 1
Row six pallets 5 of arrangement, wherein, heat exchanger tube 4 is divided into seven layers in cylinder 1, seven layers of heat-exchanging tube bundle is formed, except undermost heat exchange
Every layer of heat-exchanging tube bundle outside tube bank is arranged in a pallet 5, is provided between each pallet 5 and the heat-exchanging tube bundle of its underpart
Air flue 6, the refrigerant in each pallet 5 is by the refrigerating medium heating evaporation in corresponding heat-exchanging tube bundle.Refrigerant feed tube 3 its
Middle one end is located at the top of the superiors' pallet, and the other end is leant out outside the wall of cylinder 1, and oil return pipe 7 is welded on the lowest part of cylinder 1,
And lean out outside the wall of cylinder 1, air intake duct 2 is welded on the wall highest point of cylinder 1.
Wherein, each pallet 5 is provided with side plate 51 along the both sides on its width, and the top edge of side plate 51 is slightly above corresponding
The top edge of the heat-exchanging tube bundle of layer.In an embodiment of the present invention, the heat-exchanging tube bundle in each pallet 5 is by 4 groups of 2 row's heat exchanger tube
Into the length of pallet 5 is identical with the length of heat exchanger tube 4, and width depends on the quantity of each layer of heat exchanger tube 4, and pallet 5 is in its length
It is welded and fixed on direction at the both ends close to tube sheet 8 with tube sheet 8, and pallet 5 is additionally provided with the near middle of its length direction
Middle interconnecting piece（Not shown in figure）, the middle interconnecting piece is welded and fixed with the inwall of cylinder 1.
Certainly, in the above embodiment of the present invention, the top edge of side plate 51 can also be with the heat-exchanging tube bundle of respective layer
Top edge is concordant；It is unlimited meanwhile the number of plies of heat-exchanging tube bundle and the number of plies of pallet are depending on the actual size specification of evaporator
Determine the number of plies listed by above-described embodiment, and the heat-exchanging tube bundle in each pallet can set 1~5 row's heat exchanger tube, it is also unlimited
Determine 2 rows in above-described embodiment.
A kind of refrigeration system, using the multilayer flooded evaporator of above-described embodiment.
A kind of air-conditioning system, using the multilayer flooded evaporator of above-described embodiment.
The operation principle of the embodiment of the present invention is as follows：
Gas-liquid two-phase cold-producing medium enters cylinder 1 by refrigerant feed tube 3, and refrigerant is sprayed in the superiors' pallet 5.Refrigerant with
Pool Boiling Heat Transfer occurs in this layer of pallet 5 for the refrigerating medium in the superiors' heat exchanger tube 4, and some refrigerant, which is evaporated to gas and flowed into, to be inhaled
Tracheae 2, in top edge overflow to the second layer pallet 5 for the side plate 51 that residual refrigerant liquid passes through pallet 5, in second layer pallet
In 5, with the refrigerating medium in second layer heat exchanger tube 4 Pool Boiling Heat Transfer, some refrigerant evaporation occur in this layer of pallet 5 for refrigerant
For gas, gas is flowed out by the air flue 6 between the superiors' pallet 5 and second layer heat exchanger tube 4 to both sides, then passes through cylinder 1
Passage between pallet 5 flows into air intake duct 2, and unevaporated refrigerant liquid passes through this layer of pallet side in second layer pallet 5
In the top edge overflow of plate 51 to third layer pallet 5.So by that analogy, refrigerant boils in following each occurred pool of layer pallet 5
Heat exchange is risen, part of refrigerant is evaporated to gas, is flowed out by the air flue 6 between this layer of pallet 5 and lower floor's heat exchanger tube 4, another
In top edge overflow to the lower tray 5 that the unevaporated refrigerant liquid in part passes through this layer of tray side panels 51.Orlop pallet 5
The direct overflow of interior refrigerant liquid is to the bottom of cylinder 1.In the bottom of cylinder 1, refrigerant and the load in orlop heat exchanger tube 4
Pool Boiling Heat Transfer occurs for cryogen, and gas caused by evaporation is flowed out by this layer of air flue 6 to both sides, then passes through cylinder 1 and pallet 5
Between passage flow into air intake duct 2, due to refrigerant pass through the evaporation of each layer, oil be successively concentrated, orlop liquid refrigerant
Interior oil concentration highest, the higher refrigerant of oil content returns to compressor by oil return pipe 7, it is achieved thereby that reliable oil return.
Due to being provided with air flue 6 between each layer pallet 5 and the heat-exchanging tube bundle of its underpart, bubble caused by evaporation is easy to lead to
Cross air flue 6 to discharge in time, it is therefore prevented that bubble exchanges the adverse effect of hot property；Also solve tighter caused by a large amount of bubbles converge
The air-breathing solution dehumidification while migration of weight.
Restrained due to heat exchanger tube 4 is separated into Multi-layer exchanging heat by pallet 5, it is small equivalent to one in every layer of pallet 5 to expire
Solution type evaporator, the heat-exchanging tube bundle in every layer of pallet 5 is only by 1~5 row's set of heat exchange tubes into traditional flooded evaporator phase
Than greatly reducing refrigerant height of static liquid column so that influence of the hydrostatic column to the heat transfer temperature difference of base of evaporator heat exchanger tube is big
It is big to reduce, so as to improve heat exchange property.The top of the top edge of other every layer of tray side panels 51 and the heat-exchanging tube bundle of respective layer
Edge flushes with or slightly higher than the top edge, and this allows for the heat-exchanging tube bundle that liquid refrigerant can be flooded in every layer of pallet 5, so as to protect
The good heat exchange of refrigerant and heat exchanger tube 4 is demonstrate,proved.
Air flue 6 is set between each layer pallet 5 and the heat-exchanging tube bundle of its underpart, passage is provided between cylinder 1 and pallet 5, this
Allow for the charging amount that refrigerant charge is not above traditional flooded evaporator.
Refrigerant is successively concentrated by the evaporation of each layer, oil, in liquid refrigerant oil concentration in base of evaporator highest,
Because oil return pipe 7 is in the lowest part oil return of cylinder 1, compared with traditional flooded evaporator in refrigerant liquid level oil return, return
Oil concentration is greatly improved, and oil return reliability is improved, and also reduces the content of liquid refrigerant in oil return in addition, so as to carrying
High system energy efficiency also has certain effect.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of multilayer flooded evaporator, including：
Cylinder, refrigerant is contained inside it；
Tube sheet, it is sealedly attached to the both ends of the cylinder；
End cap, it is connected on the tube sheet, and by the closed at both ends of the cylinder；
Heat exchanger tube, it is installed in the form of tube bank in the cylinder, carries out the refrigerating medium of heat exchange with refrigerant for carrying；
Refrigerant feed tube, oil return pipe, air intake duct, above-mentioned three are installed on the barrel wall；
Characterized in that, also include positioned at the inner barrel multiple pallets that direction is arranged in parallel along its longitudinal axis, wherein, it is described
Heat exchanger tube is divided into multilayer in the cylinder, forms Multi-layer exchanging heat tube bank, every layer of heat exchange in addition to undermost heat-exchanging tube bundle
Tube bank is arranged in a pallet, is provided with air flue between each pallet and the heat-exchanging tube bundle of its underpart, in each pallet
Refrigerant is by the refrigerating medium heating evaporation in corresponding heat-exchanging tube bundle.
2. multilayer flooded evaporator according to claim 1, it is characterised in that：Each pallet is along its width
Both sides be provided with side plate, the top edge of the top edge of the side plate and the heat-exchanging tube bundle of respective layer flushes with or slightly higher than its top
Edge.
3. multilayer flooded evaporator according to claim 1, it is characterised in that：The refrigerant feed tube is located at the superiors
The top of pallet.
4. multilayer flooded evaporator according to claim 1, it is characterised in that：The oil return pipe is connected to the cylinder most
Lower.
5. multilayer flooded evaporator according to claim 1, it is characterised in that：Heat-exchanging tube bundle in each pallet by
1~5 row's set of heat exchange tubes into.
6. multilayer flooded evaporator according to claim 1, it is characterised in that：The length of the pallet and the heat exchanger tube
Length it is identical, width depends on the quantity of each layer of heat exchanger tube.
7. multilayer flooded evaporator according to claim 6, it is characterised in that：The pallet in its longitudinal direction by
The both ends of the nearly tube sheet are fixed with the Tube-sheet Welding.
8. multilayer flooded evaporator according to claim 7, it is characterised in that：The pallet is at the middle part of its length direction
Middle interconnecting piece nearby is additionally provided with, the middle interconnecting piece is welded and fixed with the cylinder inboard wall.
9. a kind of refrigeration system, it is characterised in that evaporated using the multilayer full-liquid type any one of the claims 1-8
Device.
10. a kind of air-conditioning system, it is characterised in that evaporated using the multilayer full-liquid type any one of the claims 1-8
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419567.1A CN107504721A (en) | 2016-06-14 | 2016-06-14 | Multilayer flooded evaporator and refrigeration, air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419567.1A CN107504721A (en) | 2016-06-14 | 2016-06-14 | Multilayer flooded evaporator and refrigeration, air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107504721A true CN107504721A (en) | 2017-12-22 |
Family
ID=60679231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419567.1A Pending CN107504721A (en) | 2016-06-14 | 2016-06-14 | Multilayer flooded evaporator and refrigeration, air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107504721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844259A (en) * | 2018-07-25 | 2018-11-20 | 珠海格力电器股份有限公司 | Evaporator and air-conditioner set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006580A (en) * | 2014-05-21 | 2014-08-27 | 天津商业大学 | Falling-film evaporation device |
| CN203940663U (en) * | 2014-05-21 | 2014-11-12 | 天津商业大学 | Falling film evaporation device |
| CN104819604A (en) * | 2015-04-27 | 2015-08-05 | 上海理工大学 | Layered flooded evaporator |
| CN205807912U (en) * | 2016-06-14 | 2016-12-14 | 青岛海尔智能技术研发有限公司 | Multilamellar flooded evaporator and refrigeration, air conditioning system |
-
2016
- 2016-06-14 CN CN201610419567.1A patent/CN107504721A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006580A (en) * | 2014-05-21 | 2014-08-27 | 天津商业大学 | Falling-film evaporation device |
| CN203940663U (en) * | 2014-05-21 | 2014-11-12 | 天津商业大学 | Falling film evaporation device |
| CN104819604A (en) * | 2015-04-27 | 2015-08-05 | 上海理工大学 | Layered flooded evaporator |
| CN205807912U (en) * | 2016-06-14 | 2016-12-14 | 青岛海尔智能技术研发有限公司 | Multilamellar flooded evaporator and refrigeration, air conditioning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844259A (en) * | 2018-07-25 | 2018-11-20 | 珠海格力电器股份有限公司 | Evaporator and air-conditioner set |
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