CN101226021A - Finned tube type heat exchanger inner lining with foam metal - Google Patents
Finned tube type heat exchanger inner lining with foam metal Download PDFInfo
- Publication number
- CN101226021A CN101226021A CNA2008100332891A CN200810033289A CN101226021A CN 101226021 A CN101226021 A CN 101226021A CN A2008100332891 A CNA2008100332891 A CN A2008100332891A CN 200810033289 A CN200810033289 A CN 200810033289A CN 101226021 A CN101226021 A CN 101226021A
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- Prior art keywords
- metal
- tube
- heat exchanger
- fin
- foam metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a finned tube heat exchanger of lining foam metal in the refrigeration technical field, which comprises exterior metal fins, metal tubes and foam metal; wherein the inner tube is filled with the foam metal so as to improve the heat exchange performance of the inside of the heat exchange tube. The inside of the foam metal is provided with a hole for the circulation of the air or liquid medium. The lining shape of the foam metal inside the metal tube can be one, two or three among the total cross-section shape, inner ring shape or the shape of thinness at the upward side and thickness at the lower part. The finned tube heat exchanger of lining foam metal in the refrigeration technical field has the advantages that: the heat transfer effect is obviously better than that of the prior finned tube heat exchanger; thereby the area of the heat exchanger is reduced; the material is saved; the volume and material consumption of the heat exchanger can be reduced by 20 percent to 40 percent respectively; moreover, compared with the prior widespread use finned tube heat exchanger, the cost increase is less.
Description
Technical field
The present invention relates to a kind of heat exchanger of refrigeration technology field, be specifically related to a kind of fin-tube heat exchanger of inner lining with foam metal.
Background technology
Fin-tube heat exchanger is a kind of heat exchanger form that extensively adopts at industrial circles such as refrigeration, air-conditioning, chemical industry.Fin-tube heat exchanger is made up of metal fin and metal tube, the parallel distribution of the metal fin that the multi-disc shape is identical, many metal tubes pass all sheet metals, tube fluid is flowing in the pipe separately, not blending mutually between tube and tube, the outer fluid (being generally gas) of pipe then flows in the space that pipe and sheet metal are constituted.With the example that is applied as in room air conditioner, fin-tube heat exchanger has been widely used as evaporimeter and condenser.When as evaporimeter, cold-producing medium becomes gas at in-tube evaporation, and the mode that air flows between fin outside pipe with the heat transferred cold-producing medium, thereby reduces air themperature.When the condenser, cold-producing medium becomes liquid at in-tube condensation, manages when air flowing is with condensation of refrigerant between outer fin liberated heat and takes away.Along with people's improving constantly to energy-saving and cost-reducing requirement, the requirement of the energy-efficient and miniaturization of heat exchanging device is also more and more higher, there is the problem that efficient is on the low side, power density is less than normal, structure is compact inadequately in traditional fin-tube heat exchanger structure, more and more difficulty satisfies the demand in market, therefore be badly in need of seeking augmentation of heat transfer mode in a kind of more effective pipe, to improve the whole efficiency of fin-tube heat exchanger.
At the problem that fin-tube heat exchanger intraductal heat exchange area can't increase considerably, foam metal (can reach 2000-10000m as a kind of specific area (surface area in the unit volume) is very big
2/ m
3) porous material, its application can provide a kind of new solution.Foam metal is made up of rigid backbone and inner hole, has the new material of excellent physical characteristics and favorable mechanical performance.The notable feature of foam metal is that its inside has a large amount of holes, still is closed with the branch of open-celled structure and hole-closing structure according to UNICOM between each hole.A large amount of internal voids makes foam metal material have many excellent specific properties, little as proportion, specific area is big, energy absorption good, heat exchange heat-sinking capability height (open-celled structure), sound absorption property good (open-celled structure), permeability excellent (open-celled structure), electromagnetic wave absorbability good (open-celled structure), thermal resistance, heat and flame, anti-thermal shock, can regenerate, processability is good or the like.Foam metal has very big specific area, and the open cell type foam metal made from the PMF method is an example, and its specific area maximum can reach 45cm
2/ cm
3As seen, the metal tube inner lining with foam metal can effectively increase the intraductal heat exchange area in the fin-tube heat exchanger, strengthens intraductal heat transfer.And, overcome the adverse effect in boundary layer under the forced convection condition because the foam metal complex structure uses to help utilizing 3 D complex to flow.In addition, for fluid boiling phase-change heat-exchange process, the filled and process metal also can increase blow point in the pipe, causes the heat exchange of fluid inner ebullition.
Find through literature search, realize the existing relevant patent of heat exchanger enhanced heat exchange with foam metal material at present, but all have any different with the content of present patent application to prior art.Patent utilization foam metal enhanced tube before conducts heat outward, or in other form heat exchangers the filled and process metal to reach the purpose of enhanced heat exchange, as application number is 200610105100.6, name is called the patent of " a kind of pipe heat exchanger ", be to utilize foam metal to replace traditional aluminium foil to come strong replace tubes to conduct heat outward, and application number is 200610104597.X, name is called the patent of " a kind of double-pipe metal foam heat exchanger ", then be at the double pipe heat exchanger form, by the purpose of hydroenhancement heat exchange between tube fluid in all the filled and process metal is realized in the outer tube and in the interior pipe and two pipes.But can't increasing considerably, the intraductal heat exchange area make the interior enhanced heat exchange of pipe run into bottleneck.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, a kind of fin-tube heat exchanger of inner lining with foam metal is provided, make it by arranging the mode of foam metal in managing, to improve the intraductal heat exchange coefficient, thereby improve the heat exchange efficiency of outer fluid in the finned tube exchanger pipe, reach and dwindle the finned tube exchanger volume, the purpose of economical with materials.
The present invention is achieved through the following technical solutions, the present invention includes: metal fin, metal tube, foam metal, metal fin is positioned at the metal tube outside, and is foam metal filled in metal tube, and there is the hole of supplied gas or liquid medium circulation the inside of foam metal.
Described metal fin can be made by aluminium, copper or other metals, every fin shape is identical, long 10-200cm, wide 2-20cm can be the heat exchange with the reinforcement fin surface of flat fin, corrugated fin, gap-shaped fin, shutter shape fin or other fin types.
Described metal tube can be the light pipe of aluminium, copper or other metal materials, the inside diameter ranges 2.5-30mm of pipe, thickness of pipe wall 0.2-5mm, the many identical metal tube equidistant parallels of specification distribute, manage one section by the adjacent pipe UNICOM of metal winding pipe for every with it, the other end is by metal winding pipe another root pipe UNICOM adjacent with it, and all pipe UNICOMs become a path thus, need the fluid of heat exchange to flow through wherein.
Described foam metal is made by liquid metal injecting gas blowing agent, plating or fusible pattern cast, pressed powder sintering or injection moulding method, and foam metal is copper, aluminium, stainless steel or other metals, and the aperture is 0.05mm-5mm.Foam metal has three kinds of liner forms in pipe:
(1) total cross-section formula: foam metal is full of whole metal tube.This kind form can obtain maximum heat exchange area and complicated spatial structure, and expection can obtain best heat exchange effect, but its pressure drop may maximum.
(2) interior ring type: inner wall of metal tube links to each other with the uniform foam metal of thickness, and the metal tube center is empty, and the thickness of foam metal is the 1%-45% of metal tube interior diameter.Consider that the total cross-section formula may make that the fluid flow resistance coefficient is bigger than normal, design effect and flow resistance size that this kind form is taken into account enhanced heat exchange.
(3) upper-thin-lower-thick formula: the metal tube bottom top in comparison more foam metal that distributes, the thickness of metal tube bottom foam metal is the 1%-45% of metal tube interior diameter, the thickness of foam top metal is metal tube interior diameter 0%-45%.Consider the real process of in-tube two-phase heat transfer, with the evaporation process is example, cold-producing medium is lower in the starting stage mass dryness fraction that enters evaporimeter, and refrigerant liquid is because gravity effect meeting is distributed in the position near the metal tube bottom, so the metal tube bottom more needs the enhanced heat exchange measure.
In a fin-tube heat exchanger, more than three kinds of forms can only use a kind of, ring type foam metal in the liner all in all metal tubes for example, also can use wherein two or three, for example in several metal tubes that heat exchanger enters the mouth near heat exchanging fluid, adopt upper-thin-lower-thick formula liner mode, more help the low faster evaporation of mass dryness fraction fluid, and ring type liner mode in metal tube thereafter, adopting.
Above-mentioned fin-tube heat exchanger, the material of metal fin, metal tube and foam metal can be for identical, also can be for identical or different in twos.
The present invention has significant advantage and positive effect.Heat-transfer effect can obviously be better than existing fin-tube heat exchanger, thereby reduces heat exchanger volume, and economical with materials all can reduce 20%-40% through primary Calculation heat exchanger volume and materials; And comparing cost with the finned tube exchanger that generally uses at present increases few.
Description of drawings
Fig. 1 is the three kind distribution modes of foam metal in pipe, and wherein: Fig. 1 a is the total cross-section formula, and Fig. 1 b is interior ring type, and Fig. 1 c is the upper-thin-lower-thick formula.
Fig. 2 is the structural representation of fin-tube heat exchanger, and wherein: Fig. 2 a is the heat exchanger front view, and Fig. 2 b is the heat exchanger lateral plan.
Among the figure, 1 is metal tube, and 2 is metal tube inner foam metal, and 3 is metal fin, and 4 is metal winding pipe.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Traditional fin-tube heat exchanger is made up of metal fin 3 and metal tube 1, and wherein metal tube 1 can adopt light pipe, also can adopt enhanced tube, and as thread groove tube, transversally flute tube, bellows etc., purpose all is to strengthen the intraductal heat exchange effect.
Shown in Fig. 1-2, fin-tube heat exchanger of the present invention comprises the foam metal 2 in the outer metal fin 3 of pipe, metal tube 1 and the metal tube 1, and pipe inner foam metal 2 is to increase the intraductal heat exchange area, strengthen flow-disturbing, there is the through hole of supplied gas or liquid medium circulation foam metal 2 inside.
Because foam metal 2 particular structure and performance make that the heat exchange efficiency in the Tube Sheet of Heat Exchanger improves greatly, the heat exchange efficiency between outer fluid improves greatly in the Tube Sheet of Heat Exchanger thereby make.
Aforementioned tube inner foam metal 2 can make in three kinds of liner forms any one, to reach the purpose that adapts to the various heat exchange demand.The hole diameter of foam metal 2 is 0.05mm-5mm.Foam metal 2 burns the methods such as (seepage flow) of notes by metal powder sintered, plating or fusible pattern and covers pipe internal surface.
Well cutting length and metal tube 1 appearance are same, the cylindrical foam metal 2 (axial cross section as shown in Figure 1a) that diameter is bigger slightly than metal tube 1 internal diameter.Fixing metal pipe 1, cylindrical foam metal 2 is pushed metal tube 1 along the axial direction of pipe, simultaneously can use wire to be connected with an end that enters metal tube 1 of column foam metal 2, help overcome frictional resistance between foam metal 2 and the tube wall by pulling wire, be built in metal tube 1 fully until foam metal 2.Because the diameter of column foam metal 2 will be a bit larger tham metal tube 1 internal diameter, the distortion so the edge of foam metal 2 will be squeezed, thereby combine with metal tube 1 inwall more closely, can certainly adopt additive method that foam metal 2 is filled in the metal tube 1, as long as both combine closely, reach the purpose that increases the heat exchange effect and get final product.
Bore circular port on every metal fin 3, the aperture is more smaller than metal tube 1 external diameter, and number of perforations is identical with metal tube 1 number, the position identical (metal fin 3 bore positions are shown in Fig. 2 b) of hole on every metal fin 3.All metal fin 3 parallel placements, the metal tube 1 of every inner lining with foam metal 2 passes the hole of every fin same position.Because the aperture on the metal fin 3 is more smaller than metal tube 1 external diameter, when metal tube 1 passed metal fin 3, the circular of metal fin 3 can produce crimp, thereby closely contacted with metal tube 1 outer wall.
Connect by metal winding pipe 4 between the metal tube 1, the connected mode between the tube and tube as shown in Figure 2, two metal tubes 1 of the top that do not connect metal winding pipe 4 are as import that needs heat exchanging fluid in the heat exchanger and outlet (shown in Fig. 2 a).
The material of foam metal 2 can adopt and heat exchanger tube identical materials commonly used, also can adopt and the heat exchanger tube different kinds of metals, as aluminium, copper or other metal materials.Adopt the remarkable advantage of foam metal 2 to be, it has the heat transfer efficiency height, specific area reaches greatly that density is low, in light weight, compact conformation, good characteristics such as decrease of noise functions, and metal material all can be processed into arbitrarily, so demonstrating great using value aspect the fin-tube heat exchanger of design high-efficiency compact.
Preparation for the metal tube 1 of ring type liner mode in the foam metal 2 provides a kind of specific implementation method below:
Cutting a slice is used for the foam metal 2 of liner in metal tube 1, and its length equals metal tube 1 length, and width equals metal tube 1 inwall girth, and thickness equals to design the thickness that needs inner lining with foam metal 2.With 2 of foam metals with length direction for axially being curled into drum, foam metal 2 is built in the metal tube 1, concrete grammar can be with reference to the laying method of total cross-section formula.Certainly, also can adopt additive method to prepare the metal tube 1 of the liner mode of foam metal 2 interior rings or upper-thin-lower-thick, as long as foam metal 2 can form the distribution form of design in metal tube 1, and foam metal 2 can closely be connected with metal tube 1 inwall and gets final product.
Claims (10)
1. the fin-tube heat exchanger of an inner lining with foam metal, comprise metal fin, metal tube, foam metal, metal fin is positioned at the metal tube outside, it is characterized in that, filled and process metal in the described metal tube, foam metal inside have the hole of supplied gas or liquid medium circulation.
2. the fin-tube heat exchanger of inner lining with foam metal according to claim 1 is characterized in that, described foam metal has the liner form in metal tube be one or both or three kinds in total cross-section formula, interior ring type or the upper-thin-lower-thick formula.
3. the fin-tube heat exchanger of inner lining with foam metal according to claim 2 is characterized in that, described total cross-section formula liner form is meant that foam metal is full of whole metal tube.
4. the fin-tube heat exchanger of inner lining with foam metal according to claim 2 is characterized in that, described interior ring type liner form is meant that the uniform foam metal of inner wall of metal tube and thickness links to each other, and the metal tube center is empty.
5. according to the fin-tube heat exchanger of claim 2 or 4 described inner lining with foam metal, it is characterized in that in the described interior ring type liner form, the thickness of foam metal is the 1%-45% of metal tube interior diameter.
6. the fin-tube heat exchanger of inner lining with foam metal according to claim 2 is characterized in that, described upper-thin-lower-thick formula liner form is meant the metal tube bottom top in comparison more foam metal that distributes.
7. according to the fin-tube heat exchanger of claim 2 or 6 described inner lining with foam metal, it is characterized in that, in the described upper-thin-lower-thick formula liner form, the thickness of metal tube bottom foam metal is the 1%-45% of metal tube interior diameter, and the thickness of foam top metal is metal tube interior diameter 0%-45%.
8. according to the fin-tube heat exchanger of claim 1 or 2 or 3 or 4 or 6 described inner lining with foam metal, it is characterized in that, described foam metal, its aperture is 0.05mm-5mm.
9. the fin-tube heat exchanger of inner lining with foam metal according to claim 1 is characterized in that, described metal fin, and its every fin shape is identical, and long is 10cm-200cm, and wide is 2cm-20cm.
10. according to the fin-tube heat exchanger of claim 1 or 2 or 3 or 4 or 6 described inner lining with foam metal, it is characterized in that, described metal tube, the inside diameter ranges of its pipe is 2.5mm-30mm, and thickness of pipe wall is 0.2mm-5mm, and the many identical metal tube equidistant parallels of specification distribute, manage one section by the adjacent pipe UNICOM of metal winding pipe for every with it, the other end is by metal winding pipe another root pipe UNICOM adjacent with it, and all pipe UNICOMs become a path thus, need the fluid of heat exchange to flow through wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100332891A CN101226021A (en) | 2008-01-31 | 2008-01-31 | Finned tube type heat exchanger inner lining with foam metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100332891A CN101226021A (en) | 2008-01-31 | 2008-01-31 | Finned tube type heat exchanger inner lining with foam metal |
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| CN101226021A true CN101226021A (en) | 2008-07-23 |
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|---|---|---|---|
| CNA2008100332891A Pending CN101226021A (en) | 2008-01-31 | 2008-01-31 | Finned tube type heat exchanger inner lining with foam metal |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408389B (en) * | 2008-11-26 | 2010-12-22 | 北京航空航天大学 | Combined type foamed metal core material and phase-change thermal storage apparatus using the same |
| CN102425964A (en) * | 2011-11-07 | 2012-04-25 | 太原理工大学 | Plate-type heat exchanger |
| CN102661524A (en) * | 2012-05-02 | 2012-09-12 | 浙江全加好科技有限公司 | High-power LED (light-emitting diode) line lamp provided with metal heat abstractor |
| CN103191940A (en) * | 2013-04-02 | 2013-07-10 | 中南大学 | Preparation method of heat exchanging metal composite pipe |
| WO2014055045A1 (en) | 2012-10-03 | 2014-04-10 | Technická Univerzita V Košiciach | Flow profile with debossed boundaries |
| CN103727825A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Refractory metal heat-exchange tube |
| CN103722790A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Preparation method of Re (rhenium) foam |
| CN103727833A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Ceramic-based composite material heat exchange tube |
| US8708034B2 (en) | 2008-11-10 | 2014-04-29 | Mitsubishi Electric Corporation | Air conditioner |
| CN104236366A (en) * | 2013-06-19 | 2014-12-24 | 三星电子株式会社 | Heat exchanger and manufacturing method thereof |
| CN104949563A (en) * | 2015-06-19 | 2015-09-30 | 中国石油大学(华东) | Density-gradient metal foam heat exchange tube |
| CN106090866A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of being applicable to becomes the steam generator under gravity environment |
| CN109029035A (en) * | 2018-05-17 | 2018-12-18 | 上海电力学院 | Using the shell-and-tube exchanger of foam copper product |
| CN109780893A (en) * | 2017-11-10 | 2019-05-21 | 王晋声 | A kind of metal fin heat exchange unit and the heat exchanger using it |
| CN110500830A (en) * | 2019-04-29 | 2019-11-26 | 何家密 | The reduction power-exhausting processes of refrigerant evaporation and condensation cooling and warming |
| CN110705043A (en) * | 2019-09-12 | 2020-01-17 | 广东志高暖通设备股份有限公司 | Optimization design method of noise reduction type heat exchanger |
| WO2021047463A1 (en) * | 2019-09-12 | 2021-03-18 | 青岛海尔电冰箱有限公司 | Evaporator assembly for ice-making apparatus |
| CN113473762A (en) * | 2020-03-30 | 2021-10-01 | 华为技术有限公司 | Equipment shell, equipment and laser radar |
-
2008
- 2008-01-31 CN CNA2008100332891A patent/CN101226021A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8708034B2 (en) | 2008-11-10 | 2014-04-29 | Mitsubishi Electric Corporation | Air conditioner |
| CN101408389B (en) * | 2008-11-26 | 2010-12-22 | 北京航空航天大学 | Combined type foamed metal core material and phase-change thermal storage apparatus using the same |
| CN102425964A (en) * | 2011-11-07 | 2012-04-25 | 太原理工大学 | Plate-type heat exchanger |
| CN102661524A (en) * | 2012-05-02 | 2012-09-12 | 浙江全加好科技有限公司 | High-power LED (light-emitting diode) line lamp provided with metal heat abstractor |
| WO2014055045A1 (en) | 2012-10-03 | 2014-04-10 | Technická Univerzita V Košiciach | Flow profile with debossed boundaries |
| CN103191940A (en) * | 2013-04-02 | 2013-07-10 | 中南大学 | Preparation method of heat exchanging metal composite pipe |
| CN104236366B (en) * | 2013-06-19 | 2018-03-30 | 三星电子株式会社 | The manufacture method of heat exchanger |
| CN104236366A (en) * | 2013-06-19 | 2014-12-24 | 三星电子株式会社 | Heat exchanger and manufacturing method thereof |
| CN103727833B (en) * | 2013-09-11 | 2016-05-04 | 太仓派欧技术咨询服务有限公司 | A kind of ceramic matric composite heat-exchange tube |
| CN103727833A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Ceramic-based composite material heat exchange tube |
| CN103722790B (en) * | 2013-09-11 | 2016-05-04 | 太仓派欧技术咨询服务有限公司 | A kind of preparation method of rhenium foam |
| CN103722790A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Preparation method of Re (rhenium) foam |
| CN103727825B (en) * | 2013-09-11 | 2017-01-11 | 太仓派欧技术咨询服务有限公司 | Refractory metal heat-exchange tube |
| CN103727825A (en) * | 2013-09-11 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Refractory metal heat-exchange tube |
| CN104949563A (en) * | 2015-06-19 | 2015-09-30 | 中国石油大学(华东) | Density-gradient metal foam heat exchange tube |
| CN106090866A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of being applicable to becomes the steam generator under gravity environment |
| CN109780893A (en) * | 2017-11-10 | 2019-05-21 | 王晋声 | A kind of metal fin heat exchange unit and the heat exchanger using it |
| CN109029035A (en) * | 2018-05-17 | 2018-12-18 | 上海电力学院 | Using the shell-and-tube exchanger of foam copper product |
| CN110500830A (en) * | 2019-04-29 | 2019-11-26 | 何家密 | The reduction power-exhausting processes of refrigerant evaporation and condensation cooling and warming |
| CN110705043A (en) * | 2019-09-12 | 2020-01-17 | 广东志高暖通设备股份有限公司 | Optimization design method of noise reduction type heat exchanger |
| WO2021047463A1 (en) * | 2019-09-12 | 2021-03-18 | 青岛海尔电冰箱有限公司 | Evaporator assembly for ice-making apparatus |
| CN114364935A (en) * | 2019-09-12 | 2022-04-15 | 青岛海尔电冰箱有限公司 | Evaporator assembly for ice making apparatus |
| EP4030126A4 (en) * | 2019-09-12 | 2022-10-19 | Qingdao Haier Refrigerator Co., Ltd | Evaporator assembly for ice-making apparatus |
| CN110705043B (en) * | 2019-09-12 | 2024-04-02 | 广东开利暖通空调股份有限公司 | Optimal design method of noise reduction type heat exchanger |
| CN113473762A (en) * | 2020-03-30 | 2021-10-01 | 华为技术有限公司 | Equipment shell, equipment and laser radar |
| CN113473762B (en) * | 2020-03-30 | 2022-12-13 | 华为技术有限公司 | Equipment shell, equipment and laser radar |
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