CN1769830A - Fluid distributing seal head of plate-fin type heat exchanger - Google Patents
Fluid distributing seal head of plate-fin type heat exchanger Download PDFInfo
- Publication number
- CN1769830A CN1769830A CN 200510106657 CN200510106657A CN1769830A CN 1769830 A CN1769830 A CN 1769830A CN 200510106657 CN200510106657 CN 200510106657 CN 200510106657 A CN200510106657 A CN 200510106657A CN 1769830 A CN1769830 A CN 1769830A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- end socket
- plate
- section
- fluid
- Prior art date
- 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.)
- Granted
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a fluid allocation end of plate-fin heat exchanger, which consists of fluid inlet section and arc end connection section, wherein an isolation plate is set space region of arc end connection section with several through-holes of three regions; the hole diameter of end section central region is the shortest and the deflection center region hole is secondary and the end section edge region is longest; or we can drill little hole on the orifice plate evenly according to the need of fluid resistance. The invention improves the non-uniformity of transverse and longitude allocation in the exchanger and heat conductivity, which reduces the equipment bulk and cost.
Description
Technical field
The present invention is patent application 03114439.X, name is called dividing an application of " flow deflector that fluid distributing seal head of plate-fin type heat exchanger is connected with end socket ", belong to plate-fin heat exchanger logistics distribution, heat conduction reinforced and performance optimization technical field, be specifically related to a kind of fluid distributing seal head of plate-fin type heat exchanger.
Background technology
Plate-fin heat exchanger is the key equipment in the thermal procession, because the characteristics of its high-efficiency compact are widely used in fields such as the energy, oil, chemical industry, metallurgy, aeronautics and space.In the design process of plate-fin heat exchanger, suppose that all heat exchanging fluid is uniformly distributed in the heat exchanger, in fact, because the design of end socket, flow deflector is unreasonable, add from house steward's incoming flow to enter the variation that exists repeatedly equivalent diameter end socket, flow deflector, this process of heat exchanger, realize that even distribution of fluid of heat exchanger inside is impossible.Even house steward's incoming flow is evenly distributed, (for example: the cooling of viscous fluid, heating power vibration etc.) influence also can cause the inhomogeneous of heat exchanger internal flows distribution owing to some factors in passage mismachining tolerance, the heat transfer process.The inhomogeneous of heat exchanger internal flows distribution is the key factor that causes that its performance descends.To discovering of plate-fin heat exchanger: entrance structure has the greatest impact to the inhomogeneities that logistics distributes, because the flow arrangement mode difference of end enclosure structure and heat exchanger, the inhomogeneities that logistics distributes can cause the overall efficiency of contra-flow heat exchanger, condenser to descend 7% to the difference that influences of its overall efficiency; And to the influence of cross-current type heat exchanger effectiveness up to 25%.Be the decline of compensation owing to the inhomogeneous heat exchanger effectiveness that causes of logistics distribution, the design safety factor (DSF) that suitably amplifies plate-fin heat exchanger is necessary, the design safety factor (DSF) of cold side is up to 39% in the design process of present such heat exchanger at home, reduced the overall efficiency of such heat exchanger, it is the important content of plate-fin heat exchanger optimal design that the factor that influences the inhomogeneities that its internal flows distributes is studied accordingly, also seems very urgent.
The applicant has carried out years of researches to this work, grasps international forward position research trends of this direction and engineering and uses present situation, and clear and definite heat exchanger entrance structure is to the rule that influences of logistics partition characteristic.The present invention proposes several novel inlet end sockets with regard to the problem that present inlet distribution structure exists, and is simple in structure, easily manufactured.Theory analysis, numerical simulation and experimental study through deep have confirmed its feasibility and reliability.
Summary of the invention
At the phenomenon of the present fluid maldistribution that exists of plate-fin heat exchanger, the present invention proposes new departure of inlet distribution structure.The factor that causes the logistics maldistribution is many-sided, and the structural design of flow deflector and end socket, installation are made, the change of flow operating mode etc. all can cause heat exchanger internal flows maldistribution.Under heterogeneous mobile situation, the inhomogeneities that logistics distributes seems more outstanding.Adopt new type of plate fin heat exchanger entrance structure of the present invention, the logistics that has improved heat exchanger inner panel bundle greatly distributes, improved the heat transfer property of heat exchanger, reduced the equipment investment that remedies the heat exchange area loss, eliminate the serious accident that the high pressure plate-fin heat exchanger causes because of heat exchange is bad, reduced fault rate and operation maintenance expense.
The objective of the invention is to, a kind of fluid distributing seal head of plate-fin type heat exchanger is provided, this fluid distributing seal head of plate-fin type heat exchanger can improve the horizontal and vertical logistics maldistribution of inner panel bundle, improve heat exchanger heat-transfer performance.
Realize that technical scheme of the present invention is, fluid distributing seal head of plate-fin type heat exchanger, this end socket is by traditional basic model end socket
The type structural design, it comprises fluid inlet section and arc end socket linkage section; It is characterized in that, also be provided with a division board, and on division board, be distributed with a plurality of through holes in the volume inside zone of arc end socket linkage section; The distribution characteristics of through hole is three zones on the described division board: the diameter minimum of end socket kernel of section region apertures; The diameter that departs from the hole of central area takes second place; The diameter maximum in the hole in end socket section edges zone.
Other characteristics of the fluid distributing seal head of plate-fin type heat exchanger of this scheme are:
A plurality of through holes on the described division board distribute or uneven distribution equably.
Being provided with of described division board can be isometric with arc end socket linkage section, also can be less than the length of arc end socket linkage section.
The plate-fin heat exchanger fluid of the present invention's proposition distributes the inlet end socket, for improving the horizontal and vertical logistics maldistribution of heat exchanger inner panel bundle, improving heat exchanger heat-transfer performance, reaches the purpose that reduces equipment volume and investment.
Description of drawings
Fig. 1 is existing heat exchanger entrance end enclosure structure figure;
Fig. 2 is end enclosure structure figure of the present invention;
Fig. 3～Fig. 5 is an end enclosure structure profile of the present invention, a) is front view wherein, b) is vertical view, c) is left view;
Fig. 5 is a best water conservancy diversion angle flow deflector structure schematic diagram of the present invention.
Fig. 6 is the best punching of a present invention diameter flow deflector structure schematic diagram;
Fig. 7 is the flow deflector structure schematic diagram that the present invention has h/H;
Fig. 8 a), b) be respectively the influence curve that various end enclosure structure convection cells distribute performances;
Fig. 9 is plate-fin heat exchanger main body figure;
Figure 10 is the test specimen sectional drawing; Wherein scheming a) is test specimen figure, figure b) be sectional drawing a).
Figure 11 is experimental system figure.
The present invention is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
Referring to accompanying drawing 2.According to technical scheme of the present invention, a kind of fluid distributing seal head of plate-fin type heat exchanger, this end socket is by traditional basic model end socket
The type structural design, it comprises a fluid inducer 1 and arc end socket linkage section 2; The locus that is connected with arc end socket linkage section 2 in fluid inlet section 1 also is provided with a division board 4, and is distributed with a plurality of through holes at division board 4.The distribution characteristics in hole is three zones on the division board 4: the diameter minimum of end socket kernel of section region apertures; The diameter that departs from the hole of central area takes second place; The diameter maximum in the hole in end socket section edges zone.
A plurality of through holes on the division board 4 distribute or uneven distribution equably.
Being provided with of division board 4 can be isometric with arc end socket linkage section 2, also can be less than the length of arc end socket linkage section 2.
With the flow deflector that fluid distributing seal head of plate-fin type heat exchanger of the present invention is connected, comprise a traditional flow deflector, flow deflector is provided with pod apertures, and the water conservancy diversion angle of flow deflector is set to 45 °, and the diameter of the pod apertures on the flow deflector is 2mm.
Establish a fluid infusion chamber at the edge of flow deflector, the width in this fluid infusion chamber is h, and the A/F of end socket is H, and h/H is 0.2.
Research of the present invention has solved wherein many key technologies, has realized the logistics uniform distribution of plate-fin heat exchanger.Innovative idea proposed by the invention comprises following several respects:
1, proposes the structure of orifice-plate type end socket, solved the whole logistics maldistribution in plate bundle cell cube cross section.
Proposed the orifice-plate type end enclosure structure first, its main thought is to adorn an orifice plate in end socket inside, makes fluid carry out seepage flow through orifice plate, and fluid laterally and vertically is being assigned in the heat exchanger equably.The present invention proposes three kinds of orifice-plate type end enclosure structures: stamp equably on (1) orifice plate aperture (end enclosure structure D, Fig. 3); (2) feature of distributing according to fluid is stamped aperture unevenly on orifice plate, and its distribution characteristics is divided into three zones for punching: end socket kernel of section zone punching diameter minimum; The punching diameter that departs from the central area takes second place; The punching diameter maximum in end socket section edges zone (end enclosure structure E, Fig. 4); (3) the part orifice plate is adopted in the requirement suitable according to fluid resistance, on orifice plate, stamp equably aperture (end enclosure structure F, Fig. 5).
2, determine best flow deflector structure pattern, solved the vertical logistics maldistribution in plate bundle cell cube cross section
(1) the water conservancy diversion angle of flow deflector is with 45 ° of the bests
The water conservancy diversion angle of flow deflector has considerable influence to the guide performance of flow deflector, discover that widely used flow deflector is very random in the present industrial design, guide performance is relatively poor, and the flow deflector (Fig. 6) of water conservancy diversion angle when being 45 ° has good guide performance, under identical operating mode, guide performance with other water conservancy diversion angle flow deflector compares guide performance the best of this flow deflector.
(2) the punching diameter of flow deflector is best with 2mm
In the general industrial design, the punching diameter of flow deflector is often by virtue of experience chosen by the technical staff, lacks certain theory and experimental basis.Theoretical and experimental study according to the inventor, its guide performance reached best (Fig. 7) when discovery was about 2mm at the flow deflector opening diameter, can make fluid in the inner distribution uniformly of flow deflector, thus the good problem of improving the vertical logistics maldistribution in heat exchanger exit cross section.
(3) notion of introducing flow deflector structure parameter h/H
Traditional flow deflector structure only relies on the effect convection cell of its water conservancy diversion angle to carry out guide functions, and these means are more single, DeGrain.According to the result of study specialized designs flow deflector of structure h/H (Fig. 8), the structural parameters of flow deflector h/H get about 0.2 for well.The main purpose of this structural design is that Mi mends inhomogeneous that vertical logistics distributes, the main feature of the flow deflector of structure h/H is exactly to establish a fluid infusion chamber at the edge of flow deflector, its main purpose is to rely on the structure that changes flow deflector, make full use of the mobile fluid infusion of fluid of the punching generation of flow deflector, it is inhomogeneous to improve flowing velocity distribution.
Effect of the present invention is:
(1) the water conservancy diversion angle of flow deflector also has a significant impact plate bundle cell cube cross section logistics maldistribution and flow resistance characteristics, find that widely used flow deflector guide performance is relatively poor in the present industrial design, and be 45 ° and flow deflector opening diameter when being about 2mm in the water conservancy diversion angle, guide performance the best of flow deflector.Proposed the notion of flow deflector structure parameter h/H first, by changing the value of h/H, in the inner fluid infusion chamber that forms different sizes of flow deflector, thereby the velocity field of having improved flow deflector inside distributes.Discover that the ratio that adopts above flow deflector structure can make Peak Flow Rate and minimum flow velocity on the longitudinal direction of plate bundle cell cube inner passage drops to 2～5 times by original 3～7.
(2) defined the dimensionless group of judging inhomogeneous distribution, and the influence of the multiple end enclosure structure convection cell distributing uniformity that the present invention is proposed carried out numerical simulation, result of calculation is plotted in Fig. 9.In order to assess the inhomogeneities that the logistics of end socket outlet distributes, introduce unevenness S
iNotion, S
iSize just representing logistics maldistribution degree on the end socket outlet, available equation expression is:
S
i＝(g
i-g
a)/g
a
In the formula: g
iIt is the mass flowrate of i passage; g
aAverage quality flow rate for n passage.
What Fig. 9 disclosed is when the average Reynolds number of identical inlet, the situation of each passage logistics maldistribution of various end enclosure structures outlet, from the definition of unevenness as can be known curve to be tending towards its distribution effects of null value more good more.
What Figure 10 represented is the structural representation of plate-fin heat exchanger, and plate-fin heat exchanger is made up of two parts as we can see from the figure, and it comprises end socket and flow deflector to a part for entrance structure, and another part is the heat exchanger main body.Fluid enters flow deflector through end socket, enters the heat exchanger main body by guide vanes distribute.
What Figure 11 represented is an industrial small size plate-fin heat exchanger entrance structure schematic diagram, and the empty company of group that divides produces by Kaifeng, and the size of its inlet tube, end socket and internal structure are according to 3200Nm
3.h
-1The main heat exchanger cell cube size of using in the space division system is carried out the modelling design.For realize to the accurate measurement of flow with carry out relevant experimental study, the fluid flow passages cross section of test specimen is divided into 30 sub-districts, the sectional area of each sub-district is 41.7mm * 40mm, each sub-district (hot side contains 40 minitype channel P) is measured as a channel C h, the equivalent diameter of hot-side channel (Ch) is 17mm, and channel arrangement is seen Figure 11.In when experiment, the mass flowrate of each hot-side channel (Ch) is measured, thereby can be obtained the flow distribution or the passage velocity flow profile performance plot in heat exchanger cross section.
That Figure 12 represents is experimental system figure, mainly is made up of gas passage system, water circuit system and measuring system.This testing stand can carry out the research of the inhomogeneous distributivity of liquid phase, gas phase and gas-liquid two-phase.The circulation of whole path is made up of following link: air enters water pump, voltage-stablizer, the flow transmitter on air and liquid mixer and the liquid road of flowing through by cooler, voltage-stablizer, flow control valve, filter, turbine flux transmitter after the pressure compressor contracts water mixes and enters test specimen then, after the switch box of flowing through, sub-thread is drawn and is entered gas-liquid separator and carry out corresponding gas-liquid respectively and measure.
Claims (3)
1. fluid distributing seal head of plate-fin type heat exchanger, this end socket is by traditional basic model end socket
The type structural design, it comprises fluid inlet section (1) and arc end socket linkage section (2); It is characterized in that, also be provided with a division board (4), and on division board (4), be distributed with a plurality of through holes in the volume inside zone of arc end socket linkage section (2); The distribution characteristics that described division board (4) is gone up through hole is three zones: the diameter minimum of end socket kernel of section region apertures; The diameter that departs from the hole of central area takes second place; The diameter maximum in the hole in end socket section edges zone.
2. fluid distributing seal head of plate-fin type heat exchanger as claimed in claim 1 is characterized in that, a plurality of through holes on the described division board (4) distribute or uneven distribution equably.
3. fluid distributing seal head of plate-fin type heat exchanger as claimed in claim 1 is characterized in that, the setting of described division board (4) and arc end socket linkage section (2) are isometric, or less than the length of arc end socket linkage section (2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03114439 CN1244794C (en) | 2003-01-17 | 2003-01-17 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03114439 Division CN1244794C (en) | 2003-01-17 | 2003-01-17 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769830A true CN1769830A (en) | 2006-05-10 |
| CN100453959C CN100453959C (en) | 2009-01-21 |
Family
ID=4790430
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101066577A Expired - Fee Related CN100453959C (en) | 2003-01-17 | 2003-01-17 | Fluid distributing seal head of plate-fin type heat exchanger |
| CN 03114439 Expired - Fee Related CN1244794C (en) | 2003-01-17 | 2003-01-17 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03114439 Expired - Fee Related CN1244794C (en) | 2003-01-17 | 2003-01-17 | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN100453959C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806554A (en) * | 2010-03-31 | 2010-08-18 | 开封空分集团有限公司 | Distributor for plate-fin heat exchanger |
| CN102538565A (en) * | 2012-01-09 | 2012-07-04 | 无锡市鑫盛换热器制造有限公司 | Special-shaped aluminum trough seal head for heat exchanger |
| CN106440526A (en) * | 2016-10-18 | 2017-02-22 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
| WO2023173455A1 (en) * | 2022-03-14 | 2023-09-21 | 西安交通大学 | Multi-layer flow distribution liquid cooling plate |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011013340A1 (en) * | 2010-12-30 | 2012-07-05 | Linde Aktiengesellschaft | Distributor and heat exchanger device |
| CN102288066A (en) * | 2011-09-01 | 2011-12-21 | 高亚贵 | Micro channel heat exchanger |
| CN102967170A (en) * | 2012-11-13 | 2013-03-13 | 西安交通大学 | Turning vane sealing head of plate-fin heat exchanger |
| CN103017591A (en) * | 2013-01-14 | 2013-04-03 | 中国石油大学(华东) | Head baffle of plate-fin heat exchanger |
| CN103150439B (en) * | 2013-03-14 | 2015-06-03 | 西安交通大学 | Plate-fin heat exchanger oriented forecasting method for flow and heat exchange performances of fin |
| CN103453794A (en) * | 2013-09-25 | 2013-12-18 | 重庆超力高科技有限责任公司 | Condenser manifold |
| CN103759575A (en) * | 2014-01-08 | 2014-04-30 | 苏州市职业大学 | Guide plate of automotive radiator water tank |
| CN104457036B (en) * | 2014-12-08 | 2016-09-28 | 哈尔滨工业大学 | Case wing formula low-temperature heat accumulating heat exchanger and the source pump operation method containing this heat exchanger |
| CN104457035B (en) * | 2014-12-08 | 2016-08-31 | 哈尔滨工业大学 | A kind of compact molding box wing formula low-temperature heat accumulating heat exchanger |
| KR101684097B1 (en) * | 2015-04-13 | 2016-12-20 | 현대자동차주식회사 | Filter unit for Canister |
| CN104776747A (en) * | 2015-04-18 | 2015-07-15 | 山东国信工业设备有限公司 | Steam inlet distributing device of shell and tube heat exchanger |
| CN105157455A (en) * | 2015-07-31 | 2015-12-16 | 华南理工大学 | Flow-area-variable backflow plate-fin heat exchanger and control method thereof |
| EP3150952A1 (en) * | 2015-10-02 | 2017-04-05 | Alfa Laval Corporate AB | Heat transfer plate and plate heat exchanger |
| CN106288927A (en) * | 2016-09-21 | 2017-01-04 | 天津商业大学 | A kind of uniform distribution plate-fin heat exchanger flow deflector |
| CN106762105B (en) * | 2016-12-22 | 2020-04-03 | 西北工业大学 | Combined cooling structure for intercooler of automobile engine |
| CN106989629B (en) * | 2017-02-27 | 2018-12-25 | 浙江大学 | A kind of the two-directional corrugations type water conservancy diversion end socket and its construction method of plate-fin heat exchanger |
| CN109443043B (en) * | 2018-09-05 | 2019-09-27 | 西安交通大学 | A kind of lead-supercritical carbon dioxide Intermediate Heat Exchanger |
| JP2021085535A (en) * | 2019-11-25 | 2021-06-03 | ダイキン工業株式会社 | Heat exchanger |
| CN111121512A (en) * | 2020-02-24 | 2020-05-08 | 中国科学院理化技术研究所 | Solid phase cold accumulator |
| CN111895838A (en) * | 2020-08-27 | 2020-11-06 | 浙江工业大学 | Flow deflector for energy saver of smoking furnace |
| CN112149248A (en) * | 2020-09-15 | 2020-12-29 | 南京航空航天大学 | Design method of uniform flow field generator |
| CN117968439B (en) * | 2024-04-01 | 2024-06-04 | 中国核动力研究设计院 | Flow equipartition seal head of heat exchanger and design method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633970B2 (en) * | 1989-09-12 | 1994-05-02 | 東京瓦斯株式会社 | Heat exchanger for cold heat recovery of liquefied natural gas |
| US5730209A (en) * | 1995-04-28 | 1998-03-24 | Air Products And Chemicals, Inc. | Defrost and liquid distribution for plate-fin heat exchangers |
| JP2001221582A (en) * | 2000-02-09 | 2001-08-17 | Kobe Steel Ltd | Plate-fin heat exchanger |
-
2003
- 2003-01-17 CN CNB2005101066577A patent/CN100453959C/en not_active Expired - Fee Related
- 2003-01-17 CN CN 03114439 patent/CN1244794C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806554A (en) * | 2010-03-31 | 2010-08-18 | 开封空分集团有限公司 | Distributor for plate-fin heat exchanger |
| CN102538565A (en) * | 2012-01-09 | 2012-07-04 | 无锡市鑫盛换热器制造有限公司 | Special-shaped aluminum trough seal head for heat exchanger |
| CN102538565B (en) * | 2012-01-09 | 2016-04-20 | 无锡市鑫盛换热器制造有限公司 | A kind of special-shaped aluminum trough seal head for heat exchanger |
| CN106440526A (en) * | 2016-10-18 | 2017-02-22 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
| WO2023173455A1 (en) * | 2022-03-14 | 2023-09-21 | 西安交通大学 | Multi-layer flow distribution liquid cooling plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100453959C (en) | 2009-01-21 |
| CN1431453A (en) | 2003-07-23 |
| CN1244794C (en) | 2006-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1244794C (en) | Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate | |
| CN101498565B (en) | Parallel flow evaporator | |
| CN103837025A (en) | Micro-channel heat exchanger | |
| CN104990433A (en) | Plate-fin heat exchanger | |
| CN202993924U (en) | Microchannel heat exchanger | |
| CN201954846U (en) | Concurrent flow heat exchanger with single pipes for flow guide | |
| CN112923608B (en) | Refrigerant flow straightener for shell and tube heat exchanger | |
| CN117168023A (en) | Component-controllable brazing plate type split liquid condenser | |
| CN115536099B (en) | Water body purifying device | |
| JP2012177546A (en) | Heat exchanger | |
| CN214619905U (en) | Air conditioning unit | |
| RU154646U1 (en) | MICROCHANNEL PLATE HEAT EXCHANGER | |
| CN2735284Y (en) | End socket structure of uniform flow guiding plate-fin heat exchanger | |
| CN214120448U (en) | Micro-channel heat exchanger and heat pump system | |
| CN204987971U (en) | Finned plate heat exchanger that baffle punched | |
| DE102008023662A1 (en) | heat pump | |
| US11421939B2 (en) | Plate heat exchanger with inlet distributor | |
| CN201363970Y (en) | Sectional-type vapor-liquid phase-change heat exchanger | |
| CN2660466Y (en) | Fin type heat exchanging modular | |
| CN109489443B (en) | Water-cooled condenser | |
| CN219674872U (en) | Intensive double-distribution type heat exchange structure | |
| CN114646152A (en) | Heat exchanger and air conditioner | |
| CN206787117U (en) | A kind of dry evaporator | |
| CN115387899B (en) | Shutter fin structure for heat exchanger | |
| CN221425440U (en) | Spray type wedge-shaped heat exchange device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090121 Termination date: 20130117 |