CN106931820A - Fin spiral heat exchange tube and heat exchanger - Google Patents

Fin spiral heat exchange tube and heat exchanger Download PDF

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Publication number
CN106931820A
CN106931820A CN201710308126.9A CN201710308126A CN106931820A CN 106931820 A CN106931820 A CN 106931820A CN 201710308126 A CN201710308126 A CN 201710308126A CN 106931820 A CN106931820 A CN 106931820A
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CN
China
Prior art keywords
fin
heat exchange
spiral
tube
exchange tube
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.)
Pending
Application number
CN201710308126.9A
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Chinese (zh)
Inventor
张路平
田光龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Set Of Energy-Saving Equipment Co Ltd
Original Assignee
Guangzhou Set Of Energy-Saving Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangzhou Set Of Energy-Saving Equipment Co Ltd filed Critical Guangzhou Set Of Energy-Saving Equipment Co Ltd
Priority to CN201710308126.9A priority Critical patent/CN106931820A/en
Publication of CN106931820A publication Critical patent/CN106931820A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42Tubular 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
    • F28F1/424Means comprising outside portions integral with inside portions
    • F28F1/426Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention provides a kind of fin spiral heat exchange tube and heat exchanger, belongs to heat-exchange apparatus field.Heat exchanger tube includes inboard wall of tube body and tube wall.Tube wall has multiple first helicla flutes and multiple first spiral salients set along the axial screw of fin spiral heat exchange tube, and multiple first helicla flutes are identical with the bearing of trend of multiple first spiral salients.Inboard wall of tube body has the second helicla flute corresponding with the first spiral salient position and the second spiral salient corresponding with the first spiral groove location.Tube wall has also been arranged side by side multiple fins.Its simple structure, easy to process, heat exchange efficiency are high.Heat exchanger includes the heat exchanger tube, and low cost of manufacture, heat exchange efficiency are high, energy consumption is low.

Description

Fin spiral heat exchange tube and heat exchanger
Technical field
The present invention relates to heat-exchange apparatus field, in particular to a kind of fin spiral heat exchange tube and heat exchanger.
Background technology
Heat exchanger tube is the key components and parts of heat-exchange device, and the size of its exchange capability of heat directly influences heat-exchange device Performance.
Current heat exchanger tube generally existing heat exchange efficiency wide variety of on the market is low, complex forming technology, production cost are high The shortcomings of, cause that the inefficiency of heat-exchange device, energy consumption be higher, high cost.
The content of the invention
It is an object of the invention to provide a kind of fin spiral heat exchange tube, its heat exchange efficiency is high, simple structure, shaping side Just.
Another object of the present invention is to provide a kind of heat exchanger, its heat exchange high working efficiency, energy consumption are low, manufacturing cost It is low.
What embodiments of the invention were realized in:
A kind of fin spiral heat exchange tube, it includes inboard wall of tube body and tube wall, and tube wall has and changed along fin spiral Multiple first helicla flutes and multiple first spiral salients that the axial screw of heat pipe is set, multiple first helicla flutes and multiple the The bearing of trend of one spiral salient is identical, inboard wall of tube body have the second helicla flute corresponding with the first spiral salient position and with Corresponding second spiral salient of first spiral groove location, tube wall has also been arranged side by side multiple fins.
Further, in preferred embodiments of the present invention, at least one side wall of each fin is provided with least one Tooth block.
Further, in preferred embodiments of the present invention, the two side of each fin is symmetrically arranged with least one tooth Block.
Further, in preferred embodiments of the present invention, tooth block gradually increases along the direction thickness away from tube wall.
Further, in preferred embodiments of the present invention, each fin sets along the axial screw of fin spiral heat exchange tube Put.
Further, in preferred embodiments of the present invention, the tangent line and fin of the first helicla flute are at same position The angle formed between tangent line is 60-120 °.
Further, in preferred embodiments of the present invention, each fin includes what is be arranged side by side along fin bearing of trend Multiple gear pieces, have breach between two neighboring gear piece.
Further, in preferred embodiments of the present invention, the breach of two adjacent fins is staggered.
Further, in preferred embodiments of the present invention, the setting alternate with the first spiral salient of the first helicla flute, second Helicla flute setting alternate with the second spiral salient.
A kind of heat exchanger, it includes above-mentioned fin spiral heat exchange tube.
The beneficial effect of the embodiment of the present invention is:
Fin spiral heat exchange tube provided in an embodiment of the present invention, the first helicla flute, the second helicla flute, the first spiral salient and The setting of the second spiral salient so that the inboard wall of tube body and tube wall of heat exchanger tube form multiple concavo-convex curved surfaces, so that bright The heat exchange area of heat exchanger tube is increased aobviously, is effectively improved the exchange capability of heat of heat exchanger tube.When fluid is in pipe or pipe outflows When dynamic, the helical structure of heat exchanger tube causes that fluid forms whirlpool, and fluid produces disorderly on the surface of tube wall or inboard wall of tube body Stream so that boundary layer is thinning, so as to be effectively improved the heat transfer effect of heat exchanger tube.First helicla flute and the second spiral salient Position correspondence and the second helicla flute and the first spiral salient the corresponding purpose in position be easy to by common body extrude, Torsional deformation is directly obtained, its simple structure, material-saving, easy to process.The setting of fin further increases heat exchanger tube Heat exchange area, exchange capability of heat is improved.
Heat exchanger provided in an embodiment of the present invention, using above-mentioned fin spiral heat exchange tube, heat exchange high working efficiency, energy Consume low, low cost of manufacture.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structural representation of fin spiral heat exchange tube provided in an embodiment of the present invention;
Fig. 2 is the sectional view of fin spiral heat exchange tube provided in an embodiment of the present invention;
Fig. 3 is structural representation of the fin provided in an embodiment of the present invention at the first visual angle;
Fig. 4 is structural representation of the fin provided in an embodiment of the present invention at the second visual angle.
Icon:200- fin spiral heat exchange tubes;210- tube chambers;220- inboard wall of tube body;The helicla flutes of 221- second;222- second Spiral salient;230- tube walls;The helicla flutes of 231- first;The spiral salients of 232- first;240- fins;241- the first side walls; 242- second sidewalls;243- gear pieces;244- breach;245- tooth blocks.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection Enclose.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, the orientation or position of the instruction such as term " interior ", " outward ", " axial direction " Relation is or the orientation or position that the invention product is usually put when using based on orientation shown in the drawings or position relationship Relation, is for only for ease of the description present invention and simplifies description, must have rather than the device or element for indicating or imply meaning Have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.Additionally, term " the One ", " second " etc. is only used for distinguishing description, and it is not intended that indicating or implying relative importance.
Additionally, the term such as term " parallel " is not offered as requiring that part is absolute parallel, and can be to be slightly tilted.As " put down Refer to OK " only its direction with respect to for " vertical ", not being that must be substantially parallel between expression structure, and can be somewhat Incline.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected;Can be Mechanically connect, or electrically connect;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention In concrete meaning.
Also referring to Fig. 1 and Fig. 2, the present embodiment provides a kind of fin spiral heat exchange tube 200, fin spiral heat exchange tube 200 inside have the tube chamber 210 passed through for heat transfer medium.Fin spiral heat exchange tube 200 is included outside inboard wall of tube body 220 and body Wall 230, tube wall 230 is arranged at the side away from tube chamber 210 of inboard wall of tube body 220.
During heat exchange, the heat transferring medium flowed through in tube chamber 210 carries out heat exchange by inboard wall of tube body 220, flows through tube chamber 210 Outer heat transferring medium carries out heat exchange by tube wall 230.Heat exchanger tube preferably by copper pipe, Alpaka pipe, stainless steel tube or It is that titanium tube is processed into, its thermal conduction effect is good, processing characteristics is excellent.
In the present embodiment, tube wall 230 has four the first helicla flutes 231 and four the first spiral salients 232. Inboard wall of tube body 220 have four respectively second helicla flute 221 corresponding with the position of the first spiral salient 232 and four respectively with Corresponding second spiral salient 222 in the position of first helicla flute 231.First helicla flute 231, the first spiral salient 232, the second spiral The bearing of trend of the spiral salient 222 of groove 221 and second is identical, i.e. the first helicla flute 231, the first spiral salient 232, the second spiral Roughly parallel between the spiral salient 222 of groove 221 and second, its rotation direction is identical and helical angle size is generally equal.
It is multiple concavo-convex that above-mentioned setting causes that the inboard wall of tube body 220 and tube wall 230 of fin spiral heat exchange tube 200 are formd Curved surface, so as to significantly increase the heat exchange area of fin spiral heat exchange tube 200, be effectively improved the heat-energy transducer of heat exchanger tube Power.
Meanwhile, when internal or external flowing of the heat transferring medium in fin spiral heat exchange tube 200, fin spiral heat exchange tube 200 helical structure causes that heat exchanging medium flow body forms whirlpool, and fluid is on tube wall 230 or the surface of inboard wall of tube body 220 Produce turbulent flow so that boundary layer is thinning, so as to be effectively improved the heat exchange efficiency of fin spiral heat exchange tube 200, reduces heat Energy consumption during exchange process.
In the present embodiment, the first helicla flute 231 and the alternate setting of the first spiral salient 232, two neighboring first spiral First spiral salient 232 is provided between groove 231, one first is provided between two neighboring first spiral salient 232 Helicla flute 231.
Because the second helicla flute 221 is corresponding with the position of the first spiral salient 232, and the second spiral salient 222 and first The position correspondence of helicla flute 231, therefore similarly, the second helicla flute 221 and the alternate setting of the second spiral salient 222 are two neighboring Second spiral salient 222 is provided between second helicla flute 221, is provided between two neighboring second spiral salient 222 One the second helicla flute 221.
Fin spiral heat exchange tube 200 uses above-mentioned set-up mode, makes the fin spiral heat exchange tube 200 can be by common tube Body extruding, torsional deformation are directly obtained, material-saving, easy to process, low production cost.
In preferred embodiments of the present invention, the first helicla flute 231, the first spiral salient 232, the second helicla flute 221, The number of two spiral salients 222 is preferably 4-6, its shape perpendicular to the section of bearing of trend can be trapezoidal, triangle, Any one or more combination in the shapes such as circular arc, rectangle.It is preferred that the first helicla flute 231, the first spiral salient 232, Two helicla flutes 221, the second spiral salient 222 are uniformly distributed along the axis of fin spiral heat exchange tube 200.
Above-mentioned set-up mode makes inboard wall of tube body 220 and the heat exchange surface of tube wall 230 be distributed evenly and at intervals, so that So that tube wall 230, the fluid on the surface of inboard wall of tube body 220 equably carry out heat exchange along the spiral camber, while favorably In heat exchange dead zone area is reduced, heat transfer effect is lifted.
In the present embodiment, tube wall 230 has been arranged side by side multiple fins 240, substantially Horizon between multiple fins 240 OK.The setting of multiple fins 240 can further improve the heat exchange area and fluid of fin spiral heat exchange tube 200 outside body The turbulent flow of wall 230, so that the heat exchange property of fin spiral heat exchange tube 200 is further improved, heat exchange energy consumption is further Effectively reduce.
Because tube wall 230 is in helicoidal structure substantially, before deformation is processed to body, first by fin 240 are arranged at tube wall 230, are easy to the setting of fin 240, make the processing technology of fin spiral heat exchange tube 200 easy.
Specifically, each fin 240 is set along the axial screw of fin spiral heat exchange tube 200, has each fin 240 Larger surface area.
The angle formed between tangent line of the tangent line and fin 240 of the first helicla flute 231 at same position is 60- 120°.The set-up mode has disturbance effect to the heat exchange medium for flowing through tube wall 230, can effectively improve heat exchange Jie The heat exchanger effectiveness of matter and fin 240.
Also referring to Fig. 3 and Fig. 4, each fin 240 includes the multiple gear pieces being arranged side by side along the bearing of trend of fin 240 243, multiple gear pieces 243 are uniformly distributed along the bearing of trend of fin 240.
Between two neighboring gear piece 243 have breach 244, breach 244 be opened in fin 240 away from tube wall 230 Side.The breach 244 of two adjacent fins 240 is staggered.
The set-up mode can increase the heat exchange area of fin 240, so as to improve the heat exchange effect of fin spiral heat exchange tube 200 Really.Meanwhile, above-mentioned set-up mode makes heat exchange medium when tube wall 230 flows in state of disturbance, changes fin spiral The heat exchange efficiency of heat pipe 200 is further improved.
Further, in the present embodiment, each gear piece 243 includes relative the first side wall 241 and second sidewall 242, the bearing of trend of the first side wall 241 and second sidewall 242 generally along fin 240 is extended.
Each the first side wall 241 of gear piece 243 and second sidewall 242 are disposed substantially symmetrically with teeth piece 245.
The setting of tooth block 245 increased the contact area of the outer heat exchange medium of tube chamber 210 and fin 240, so as to improve The heat exchange area of fin 240.Meanwhile, tooth block 245 can increase the nucleation site density of tube wall 230 and the rapids of liquid film Mobility, enhances the mixing of gas-liquid two-phase, improves the coefficient of heat transfer of tube wall 230.
Certainly, in others embodiments of the invention, the setting of tooth block 245 can be it is symmetrical or asymmetrical, such as Tooth block 245 only can also be set in the first side wall 241 of tooth block 245 or tooth block only is set in the second sidewall 242 of tooth block 245 245.In addition, setting of the tooth block 245 on fin 240 can be uniformly or non-uniformly.
Tooth block 245 is arranged at the side away from tube wall 230 of fin 240, tooth block 245 away from the one of tooth block 245 Side extends towards adjacent fin 240.Tooth block 245, the gear piece 243 and tube wall 230 for setting the tooth block 245 are sequentially connected Heat exchange groove is surrounded, heat exchange efficiency effectively improves.
In the present embodiment, the thickness of tooth block 245 gradually increases along the direction away from tube wall 230, i.e., tooth block 245 is remote Gradually increase along the direction away from tube wall 230 with a distance from the surface of gear piece 243 to the side wall that the tooth block 245 is set, have Beneficial to turbulent flow of the fluid in tube wall 230 is increased, heat exchange property strengthens.Certain tooth in others embodiments of the invention Block 245 can also be adjusted correspondingly according to the performance of heat exchange demand and heat transferring medium.
Determined through experiment, the fin spiral heat exchange tube 200 that the present embodiment is provided is compared with the common heat exchanger tube of same size, Heat exchange area increases 5-6 times, and heat exchanger effectiveness improves 50%-70%, energy-conservation more than 40%.With the screwed pipe phase of same size Than heat exchange area increases 2-3 times, and heat exchange efficiency improves 40-50%, energy-conservation more than 30%.
In sum, the fin spiral heat exchange tube 200 that the present invention is provided, it is simple structure, material-saving, easy to process.Spiral shell The setting of spin slot, spiral salient and fin 240, increases the heat exchange area and heat exchange medium of body and heat transferring medium in pipe The turbulent flow of internal wall 220 and tube wall 230, is effectively improved the heat exchange efficiency of fin spiral heat exchange tube 200.This hair The heat exchanger of bright offer, heat exchange is carried out using the fin spiral heat exchange tube 200, and low cost of manufacture, heat exchange efficiency are high, energy consumption It is low.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of fin spiral heat exchange tube, it is characterised in that including inboard wall of tube body and tube wall, the tube wall has edge Multiple first helicla flutes and multiple first spiral salients that the axial screw of the fin spiral heat exchange tube is set, it is multiple described First helicla flute is identical with the bearing of trend of multiple first spiral salient, and the inboard wall of tube body has and first spiral Corresponding second helicla flute of raised position and the second spiral salient corresponding with the first spiral groove location, outside the body Wall has also been arranged side by side multiple fins.
2. fin spiral heat exchange tube according to claim 1, it is characterised in that at least one side wall of each fin It is provided with least one tooth block.
3. fin spiral heat exchange tube according to claim 2, it is characterised in that the two side of each fin symmetrically sets It is equipped with tooth block described at least one.
4. fin spiral heat exchange tube according to claim 2, it is characterised in that the tooth block is along away from the tube wall Direction thickness gradually increase.
5. fin spiral heat exchange tube according to claim 1, it is characterised in that each described fin is along the fin spiral The axial screw of heat exchanger tube is set.
6. fin spiral heat exchange tube according to claim 5, it is characterised in that the tangent line of first helicla flute and described The angle formed between tangent line of the fin at same position is 60-120 °.
7. fin spiral heat exchange tube according to claim 1, it is characterised in that each described fin is included along the fin Multiple gear pieces that bearing of trend is arranged side by side, have breach between the two neighboring gear piece.
8. fin spiral heat exchange tube according to claim 7, it is characterised in that the breach of the two neighboring fin It is staggered.
9. fin spiral heat exchange tube according to claim 1, it is characterised in that first helicla flute and first spiral shell Revolve raised alternate setting, second helicla flute setting alternate with second spiral salient.
10. a kind of heat exchanger, it is characterised in that including the fin spiral heat exchange tube described in claim any one of 1-9.
CN201710308126.9A 2017-05-03 2017-05-03 Fin spiral heat exchange tube and heat exchanger Pending CN106931820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710308126.9A CN106931820A (en) 2017-05-03 2017-05-03 Fin spiral heat exchange tube and heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710308126.9A CN106931820A (en) 2017-05-03 2017-05-03 Fin spiral heat exchange tube and heat exchanger

Publications (1)

Publication Number Publication Date
CN106931820A true CN106931820A (en) 2017-07-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710308126.9A Pending CN106931820A (en) 2017-05-03 2017-05-03 Fin spiral heat exchange tube and heat exchanger

Country Status (1)

Country Link
CN (1) CN106931820A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2854484Y (en) * 2005-12-15 2007-01-03 苏州新太铜高效管有限公司 Heat-exchange pipe for evaporimeter
CN102121805A (en) * 2011-04-07 2011-07-13 金龙精密铜管集团股份有限公司 Enhanced heat transfer tube used for falling film evaporator
CN203100513U (en) * 2013-01-10 2013-07-31 江苏萃隆精密铜管股份有限公司 Heat-exchanger tube
CN104848726A (en) * 2015-06-05 2015-08-19 杭州沈氏节能科技股份有限公司 Multi-head spiral section tube and multi-head spirally-fluted heat exchange tube
CN105387736A (en) * 2015-12-17 2016-03-09 英特换热设备(浙江)有限公司 Efficient heat exchanger employing reinforced spiral pipe
CN205784034U (en) * 2016-07-01 2016-12-07 英特换热设备(浙江)有限公司 A kind of efficiently barrel type heat exchanger and parallel-connection structure thereof
CN205843131U (en) * 2016-06-07 2016-12-28 苏州建春换热器有限公司 A kind of heat pump is with coaxial bushing pipe heat exchanger
CN205843459U (en) * 2016-07-11 2016-12-28 广东环境保护工程职业学院 A kind of heat exchange tube structure
CN206739955U (en) * 2017-05-03 2017-12-12 广州市壹套节能设备有限责任公司 Fin spiral heat exchange tube and heat exchanger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2854484Y (en) * 2005-12-15 2007-01-03 苏州新太铜高效管有限公司 Heat-exchange pipe for evaporimeter
CN102121805A (en) * 2011-04-07 2011-07-13 金龙精密铜管集团股份有限公司 Enhanced heat transfer tube used for falling film evaporator
CN203100513U (en) * 2013-01-10 2013-07-31 江苏萃隆精密铜管股份有限公司 Heat-exchanger tube
CN104848726A (en) * 2015-06-05 2015-08-19 杭州沈氏节能科技股份有限公司 Multi-head spiral section tube and multi-head spirally-fluted heat exchange tube
CN105387736A (en) * 2015-12-17 2016-03-09 英特换热设备(浙江)有限公司 Efficient heat exchanger employing reinforced spiral pipe
CN205843131U (en) * 2016-06-07 2016-12-28 苏州建春换热器有限公司 A kind of heat pump is with coaxial bushing pipe heat exchanger
CN205784034U (en) * 2016-07-01 2016-12-07 英特换热设备(浙江)有限公司 A kind of efficiently barrel type heat exchanger and parallel-connection structure thereof
CN205843459U (en) * 2016-07-11 2016-12-28 广东环境保护工程职业学院 A kind of heat exchange tube structure
CN206739955U (en) * 2017-05-03 2017-12-12 广州市壹套节能设备有限责任公司 Fin spiral heat exchange tube and heat exchanger

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