CN101556125B - Heat-transfer pipe of evaporator - Google Patents
Heat-transfer pipe of evaporator Download PDFInfo
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- CN101556125B CN101556125B CN2009101357867A CN200910135786A CN101556125B CN 101556125 B CN101556125 B CN 101556125B CN 2009101357867 A CN2009101357867 A CN 2009101357867A CN 200910135786 A CN200910135786 A CN 200910135786A CN 101556125 B CN101556125 B CN 101556125B
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- 238000012546 transfer Methods 0.000 title claims abstract description 74
- 238000001704 evaporation Methods 0.000 claims abstract description 21
- 230000008020 evaporation Effects 0.000 claims abstract description 21
- 238000004821 distillation Methods 0.000 claims description 25
- 230000003442 weekly effect Effects 0.000 claims description 7
- 210000004883 areola Anatomy 0.000 claims description 2
- 238000009835 boiling Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 239000003507 refrigerant Substances 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat-transfer pipe of an evaporator, which comprises a fin part arranged on the external surface and an internal tooth part arranged on the internal surface. The internal tooth part comprises a primary internal tooth and a secondary internal tooth which are arranged crossways high and low in double-layer. The fin part is provided with a secondary fin groove, a third fin groove and a primary evaporation cavity, and the bottom of the evaporation cavity extends upwards and is provided with a quarternary fin, which is divided into two small hollow cavities in the primary evaporation cavity. Each primary evaporation cavity is internally provided with 1-4 quarternary fins. The fin groove and the evaporation cavity arranged on the fin part of the heat-transfer pipe of the evaporator increase the heat exchange area of the heat-transfer pipe and the number of vaporized core; and the internal tooth of the internal tooth part decreases the laminar flow effect of cooling mediums, strengths the turbulence and greatly reinforces the boiling heat transfer property.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to a kind of heat-transfer pipe of evaporator.
Background technology
Before 03 year, China's refrigeration air-conditioner generally adopts recommendatory technical standard, does not stipulate enforceable efficiency standard, causes the relative advanced international standard of Energy Efficiency Ratio of China's refrigeration air-conditioner that big gap is arranged.In order to change this backward state; China issued and implemented " household electric refrigerator efficiency limit value and efficiency grade " respectively at 2004, had implemented " room air conditioner efficiency limit value and efficiency grade ", " handpiece Water Chilling Units efficiency limit value and efficiency grade ", " unit type air conditioner efficiency limit value and efficiency grade " on March 1st, 2005.Wherein, not only stipulated current energy efficiency grading index in the national efficiency standard " room air conditioner efficiency limit value and efficiency grade ", also stipulated 2009 the air-conditioner efficiency standard technique requirement of implementing.
For the efficiency standard of the above-mentioned refrigeration air-conditioner that reaches national regulation, the general efficiency that adopts following three kinds of approach to improve the electric refrigerating machine group of refrigeration air-conditioner research staff: the heat transfer efficiency c. that a. exploitation new high-efficiency compressor b. improves heat exchanger optimizes system's design of electric refrigeration plant.
For the heat-transfer pipe manufacturing, improve the efficiency of refrigeration air-conditioner, mainly be to realize through the heat transfer efficiency of exploitation efficient heat conducting tube raising heat exchanger.The various efficient heat conducting tubes of making and using in the prior art; Though in the performance that has to a certain degree improved two devices (evaporimeter and condensers); But all exist common problem: 1, only be absorbed in the exploitation of heat-transfer pipe outer surface heat transfer area; And ignore the heat-transfer pipe outer surface when cold-producing medium heat absorption evaporation, the keeping of the nucleus of boiling promptly continuously produces bubble and keeps the high efficiency of evaporation.Generally speaking, the generation of vaporization nucleus calculation is not so difficult to be accomplished, some burrs of processing or little groove on wall all can be realized the increase of gasification core number.And keeping of the nucleus of boiling promptly can continuously produce bubble, is only the key factor that influences evaporimeter heat transfer high efficiency.And the long-pending vapour ability that can continuously produce bubble and each depression has relation, only has the depression of permanent long-pending vapour ability, is only the source of the nucleus of boiling just, real activation cave.2, pay close attention to inadequately for the heat-transfer pipe inner surface, cause the heat-transfer pipe inner wall layer to flow through greatly, the turbulent flow deficiency, heat transfer efficiency is high and make refrigeration system efficient not good.
Summary of the invention
Technical problem to be solved by this invention provides the high heat-transfer pipe of evaporator of a kind of heat transfer efficiency.
In order to address the above problem, the invention discloses a kind of heat-transfer pipe of evaporator, comprise the fin portion that is arranged at outer surface and the internal tooth portion that is arranged at inner surface, said internal tooth portion comprises double-deck internal tooth that intersects that stairstepping arranges of height and secondary internal tooth.
The tooth bar number is for to be provided with 35～65 weekly in said on direction perpendicular to axial direction; The altitude range of a said internal tooth is 0.2～0.35mm; The altitude range of said secondary internal tooth is 0.10～0.25mm; One time internal tooth helical angle scope is 25 °～40 °, and the intersecting angle scope of a said internal tooth and secondary internal tooth is 60 °～80 °, and the addendum angle scope is 30 °～60 °.
Preferably, also offer secondary wing groove in the said fin portion, said secondary wing groove is perpendicular to the axis of said heat-transfer pipe of evaporator.
Preferably, the groove depth scope of said secondary wing groove is 0.15～0.35mm, and the groove width scope is 0.15～0.25mm, and groove is counted scope for being provided with 60～125 weekly.
Preferably, also offer the wing groove three times in the said fin portion, the angular range of said three wing grooves and said evaporation heat transfer tube's axis is 120 °～160 °.
Preferably, the groove depth scope of said three wing grooves is 0.15～0.35mm, and the groove width scope is 0.15～0.25mm, and groove is counted scope and is 60～125 weekly.
Preferably; Said fin portion is provided with the flush distillation chamber; Said flush distillation cavity bottom extends upward and is provided with fin four times; Said four fins mark off at least two areolas in said flush distillation chamber, be provided with 1～4 said four fin in each said flush distillation chamber.
Preferably, the high scope of the wing of said four fins is 0.10～0.25mm, and the wing wide region is 0.05～0.15mm.
Preferably, the fin shape of said fin portion is T shape, del or trapezoidal.
Preferably, rounding off forms the double-deck stairstepping internal tooth that intersects of height at the bottom of the tooth of the tooth top of a said internal tooth and said secondary internal tooth.
Compared with prior art, the present invention has the following advantages:
The internal tooth portion of the inner surface of heat-transfer pipe of the present invention is provided with a double-deck step-like internal tooth and the secondary internal tooth of intersecting of height.This intersects the design of notch cuttype internal tooth, not only effectively increased the contact area of inner surface and refrigerant, and has strengthened the flow-disturbing in mobile of refrigerant in the pipe, makes the diabatic process of refrigerant more efficient.Make various chambeies, chamber at the heat-transfer pipe outer surface; Make heat exchange area increase, the vaporization nucleus calculation increases, simultaneously this dual umbilicate type cavity; Cold-producing medium to different wet performances; All have stable collection vapour ability, can form the stable nucleus of boiling, thereby the volatility of heat exchanger tube is strengthened greatly.Because of this kind structure, by means of special flow passage structure (slit) bubble is generated after, can form bubbling polymerization, and form liquid microlayer evaporation at the bottom of the large-area bubble, form real activation cave, strengthened boiling heat transfer performance greatly.
Description of drawings
Fig. 1 is the cutaway view of heat-transfer pipe of evaporator embodiment of the present invention;
Fig. 2 is the internal tooth structural representation of the embodiment of the invention;
Fig. 3 is the sectional perspective sketch map of the embodiment of the invention;
Fig. 4 is the cutaway view of embodiment of the invention flush distillation chamber;
Fig. 5 is the enlarged drawing of A part among Fig. 1.
The specific embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing the preferred embodiment of the present invention is described in detail.
The present invention creates at the outer surface of heat-transfer pipe of evaporator increases heat exchange area, increase the vaporization nucleus calculation, keep the nucleus of boiling, reduce heat transfer resistance, reduce the condition of temperature difference loss, makes the evaporation heat transfer process of cold-producing medium more be tending towards ideal process.Simultaneously, through strengthening the laminar flow effect of flow-disturbing, minimizing or reduction refrigerant, make the diabatic process of refrigerant more efficiently, more be tending towards ideal process at inner surface.Through the complex heat transfer efficient on improvement and the inside and outside surface of intensify heat transfer pipe, thereby reach the purpose of improving the condensation heat transfer performance, and then optimize performance of evaporator.
With reference to Fig. 1; Show the cutaway view of heat-transfer pipe of evaporator embodiment of the present invention; Comprise light end 5, be provided with fin fin portion 1, connect the transition part 3 of light end 5 and fin portion 1 and the internal tooth portion 13 of heat-transfer pipe inner surface be set, every internal tooth 13 in orientation with the angle of heat-transfer pipe axis be the internal tooth helixangle scope can for: 25 °～40 °.
Wherein, the diameter D scope of light end 5 can be 12～26mm, and the wall thickness T preferable range of light end 5 can be 1.1～1.2mm.
Fin portion 1 includes the flush distillation chamber 15 that forms between fin 11, internal tooth 13 and the adjacent fin 11.A said fin 11 is arranged at the outer surface of heat-transfer pipe, fin count FPI scope can for: 40～60/inch, 40～60 of fins can be set in the per inch length of heat-transfer pipe axial direction promptly.
With reference to Fig. 2, show the internal tooth structural representation of the embodiment of the invention, internal tooth portion 13 comprises internal tooth 131 and secondary internal tooth 132,132 cross arrangements become the stairstepping of height bilayer intersection to form to every internal tooth 13 with the secondary internal tooth by an internal tooth 131.The structure of this internal tooth 13 be through at the inner tubal wall of light face heat-transfer pipe through revolving to roll and process between an inner screw thread core print and the outside three groups of set of blades.On the inwall of each heat-transfer pipe of evaporator, revolve the internal tooth 13 that shuts out the bar scope of counting can for: 35～65/week, promptly said internal tooth can be provided with 35～65 weekly on direction perpendicular to axial direction.
Wherein, The shape of an above-mentioned internal tooth 131 and secondary internal tooth 132 can or be similar to trapezoidal for del; In embodiments of the present invention, be preferably and be similar to trapezoidal shape, but and the tooth top of above-mentioned secondary internal tooth 132 and the double-deck stairstepping internal tooth that intersects of internal tooth 131 rounding ofves formation height.The height Rh1 scope of an above-mentioned internal tooth 131 can be 0.2～0.35mm, and the height Rh2 scope of said secondary internal tooth 132 can be 0.10～0.25mm; The thick Tf scope of fin portion diapire that a said internal tooth 131 and secondary internal tooth 132 are depended on can be 0.5～0.7mm; Internal tooth helical angle be equal to every internal tooth 13 in orientation with the angle of heat-transfer pipe axis be the internal tooth helixangle scope can for: 25 °～40 °.In internal tooth 131 and two angle of the crossing α scope of time teeth 132 can for: 60 °～80 °.The addendum angle θ scope of an internal tooth 131 can be for 30 °～60 °, and is as shown in Figure 4.
Because the operation principle of heat-transfer pipe of evaporator is: extratubal fluid is a cold-producing medium, be chilled water in the pipe, manages outer cold-producing medium and evaporates through heat-transfer pipe absorption chilled water heat, makes the chilled water temperature reduction simultaneously and reaches refrigeration.So the embodiment of the invention adopts the design of intersection stairstepping internal tooth, has not only increased internal surface area effectively; And effectively reduced the laminar flow effect of refrigerant; Greatly strengthened flow-disturbing, made the diabatic process of refrigerant be tending towards ideal process more efficiently, more, promptly met and wish effect in the lattice in the paddy.
On the basis of effectively improving the heat-transfer pipe of evaporator inner surface structure, the embodiment of the invention is also improved the outer surface of above-mentioned heat-transfer pipe of evaporator, and concrete structure is with reference to shown in Fig. 1 and Fig. 3～5.
The outer surface of heat-transfer pipe is provided with fin 11 one time; The shape of this fin 11 becomes T shape approximately; And the scope of the high Fh1 of wing of a fin 11 can be: 0.5～1.0mm; Number FPI scope can for: 40～60/inch, 40～60 of fins can be set in the per inch length of heat-transfer pipe axial direction promptly.Form flush distillation chamber 15 between the adjacent fin 11, the width of said flush distillation chamber 15 is and once stitches wide Ew, above-mentionedly once stitches wide Ew scope and can be 0.35～0.65mm.Form evaporation wing mouth 150 between the top of a said adjacent fin 11, the evaporation wing of said evaporation wing mouth 150 stitches wide Eg scope can be 0.10～0.20mm.
In embodiments of the present invention, it is the T type that the cross section of a said fin 11 is not limited to, and can be del also, fall trapezoidally etc., is convenient to the flush distillation chambers 15 that bubble is shaped as long as form easily 11 of adjacent fins.
With reference to Fig. 3; Show the sectional perspective sketch map of the embodiment of the invention, a said fin 11 also offer secondary wing groove 101 perpendicular to the heat-transfer pipe of evaporator central axis, with heat-transfer pipe of evaporator central axis angular range be three wing grooves 103 of 120 °～160 °.In the embodiment of the invention, said three wing grooves 103 are preferably 135 ° with the angle of central axis.The secondary groove depth H2 scope of said secondary wing groove 101 can be 0.15～0.35mm, and secondary groove width L2 scope can be 0.15～0.25mm, the secondary groove scope of counting can for: 60～125/week.Three groove depth H3 scopes of said three wing grooves 103 can be 0.15～0.35mm, and three groove width L3 scopes can be 0.15～0.25mm, three groove scopes of counting can for: 60～125/week.Above-mentioned secondary wing groove 101 and three wing grooves 103 connect each other; Therefore refrigerant fluid can be full of in above-mentioned secondary wing groove 101 and three wing grooves 103 and be mobile, thereby has effectively increased the outer surface of heat-transfer pipe of evaporator and the contact heat-exchanging area between the cold-producing medium.Be formed with flush distillation chamber 15 between adjacent two fins 11 of fin portion, the cross section of said flush distillation chamber 15 is roughly ellipse, and the width of evaporation chamber 15 stitches wide Ew from being a wing.Said flush distillation chamber 15 connects with above-mentioned secondary wing groove 101 and three wing grooves 103; Therefore in the heat-transfer pipe of evaporator course of work; Cold-producing medium also is full of said flush distillation chamber 15 simultaneously, has further increased the heat exchange area between heat-transfer pipe of evaporator and the cold-producing medium.
In addition, in another preferred embodiment of the present invention, several four fins 151 have also been extended upward on the diapire of said flush distillation chamber 15; In embodiments of the present invention; Four fin bar scopes of counting of four fins 151 in each flush distillation chamber 15 can for: 1～4/groove, preferred, four times fin bar number is 3 a/groove; The high H4 scope of four fins of said four fins 151 can be 0.10～0.25mm, and four wide L4 scopes of fin can be 0.05～0.15mm.Said four fins 151 are divided into several capacitors 152 with the bottom of said flush distillation chamber 15.The cold-producing medium film at the capacitor 152 diapire places in flush distillation chamber 15 very easily forms nuclear boiling; Then evaporation forms bubble, and the steam taken in excess heat in the bubble makes the volume of bubble become big; When the volume of bubble is enough big; Surface tension is overcome, and the diapire that bubble leaves flush distillation chamber 15 leaves heat-transfer pipe through evaporation wing mouth 150, and the refrigerant liquid around then gets in the capacitor 152 and flush distillation chamber 15 that bubbles vacate through evaporation wing mouth 150 again; So be formed into nuclear boiling-evaporation-such cyclic process of liquid filling-ucleate boiling, quicken heat exchanging process.Therefore, this structure that four fins 151 form a plurality of capacitors 152 is set in flush distillation chamber 15, strengthened the nuclei of bubbles needed nucleus of boiling that seethes with excitement greatly, make refrigerant liquid be easier to the nucleation vaporization, quickened vaporescence.
Among the invention described above embodiment, consider the heat transfer property and the cost performance of metal material, heat-transfer pipe of evaporator preferably adopts copper product to process, and also can select metal materials such as copper alloy, aluminium, aluminium alloy, mild steel for use.
In sum, the multi-cavity cell structure of the flush distillation chamber that the embodiment of the invention provides has strengthened the required nucleus of boiling of nuclei of bubbles boiling greatly, makes cryogen liquid be easier to the nucleation vaporization, has quickened vaporescence; In addition, the design of secondary wing groove, three wing grooves when further increasing flow-disturbing, also is the passage that the evaporation bubble is overflowed and cold-producing medium constantly replenishes, thereby heat exchange property is further improved.In addition, the design of the rational outer wing number that is complementary with outer wing shape also makes wing number and wing shape reach optimal combination, and heat exchange property is further increased, thereby has improved the outer evaporation and heat-exchange efficient of pipe.
The heat-transfer pipe of evaporator structure that the embodiment of the invention provides is made various chambeies, chamber at the heat-transfer pipe outer surface, makes heat exchange area increase, and the vaporization nucleus calculation increases.Simultaneously, this dual umbilicate type cavity to the cold-producing medium of different wet performances, all has stable collection vapour ability, can form the stable nucleus of boiling, thereby the volatility of heat exchanger tube is strengthened greatly.Because of this kind structure, by means of special flow passage structure (slit) bubble is generated after, can form bubbling polymerization, and form liquid microlayer evaporation at the bottom of the large-area bubble, form real activation cave, strengthened boiling heat transfer performance greatly.
But the internal tooth form of the heat-transfer pipe of evaporator that the embodiment of the invention provides can be the double-deck stairstepping internal tooth that intersects of the height that is similar to rounding off at the bottom of trapezoidal shape and tooth top and the tooth.The design of this intersection notch cuttype internal tooth, when fully effectively increasing internal surface area, flowing of refrigerant more is tending towards eliminate laminar flow and greatly strengthens flow-disturbing in feasible the pipe, makes the diabatic process of refrigerant more efficiently, more be tending towards ideal process.
In a word; The raising of the raising of intraductal heat exchange performance, heat transfer outside a tube performance, be equipped with rational wall thickness, external diameter again; Optimal combination is carried out in this three aspect, makes the whole coefficient of heat transfer of heat-transfer pipe of evaporator significantly improve, and then helps improving the whole heat exchange effect of evaporimeter.Therefore, this type of heat-transfer pipe is used for the flooded evaporator of electric refrigerating machine group, will makes whole unit on whole structure, have more characteristics.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than a kind of heat-transfer pipe of evaporator provided by the present invention has been carried out detailed introduction; Used concrete example among this paper structure of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. heat-transfer pipe of evaporator; Comprise the fin portion that is arranged at outer surface and the internal tooth portion that is arranged at inner surface, it is characterized in that said internal tooth portion comprises double-deck internal tooth that intersects that stairstepping arranges of height and secondary internal tooth; The tooth bar number is for to be provided with 35～65 weekly in said on direction perpendicular to axial direction; The altitude range of a said internal tooth is 0.2～0.35mm, and the altitude range of said secondary internal tooth is 0.10～0.25mm, and one time internal tooth helical angle scope is 25 °～40 °; The intersecting angle scope of a said internal tooth and secondary internal tooth is 60 °～80 °, and the addendum angle scope is 30 °～60 °.
2. heat-transfer pipe of evaporator according to claim 1 is characterized in that, also offers secondary wing groove in the said fin portion, and said secondary wing groove is perpendicular to the axis of said heat-transfer pipe of evaporator.
3. heat-transfer pipe of evaporator according to claim 2 is characterized in that, the groove depth scope of said secondary wing groove is 0.15～0.35mm, and the groove width scope is 0.15～0.25mm, and groove is counted scope for being provided with 60～125 weekly.
4. heat-transfer pipe of evaporator according to claim 2 is characterized in that, also offers the wing groove three times in the said fin portion, and the angular range of said three wing grooves and said evaporation heat transfer tube's axis is 120 °～160 °.
5. heat-transfer pipe of evaporator according to claim 4 is characterized in that, the groove depth scope of said three wing grooves is 0.15～0.35mm, and the groove width scope is 0.15～0.25mm, and groove is counted scope and is 60～125 weekly.
6. heat-transfer pipe of evaporator according to claim 1; It is characterized in that; Said fin portion is provided with the flush distillation chamber; Said flush distillation cavity bottom extends upward and is provided with fin four times, and said four fins mark off at least two areolas in said flush distillation chamber, is provided with 1～4 said four fin in each said flush distillation chamber.
7. heat-transfer pipe of evaporator according to claim 6 is characterized in that, the high scope of the wing of said four fins is 0.10～0.25mm, and the wing wide region is 0.05～0.15mm.
8. according to each described heat-transfer pipe of evaporator in the claim 1～7, it is characterized in that the fin shape of said fin portion is T shape, del or trapezoidal.
9. heat-transfer pipe of evaporator according to claim 8 is characterized in that, rounding off forms the double-deck stairstepping internal tooth that intersects of height at the bottom of the tooth of the tooth top of a said internal tooth and said secondary internal tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357867A CN101556125B (en) | 2009-04-29 | 2009-04-29 | Heat-transfer pipe of evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357867A CN101556125B (en) | 2009-04-29 | 2009-04-29 | Heat-transfer pipe of evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN101556125A CN101556125A (en) | 2009-10-14 |
| CN101556125B true CN101556125B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101357867A Active CN101556125B (en) | 2009-04-29 | 2009-04-29 | Heat-transfer pipe of evaporator |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009060395A1 (en) | 2009-12-22 | 2011-06-30 | Wieland-Werke AG, 89079 | Heat exchanger tube and method for producing a heat exchanger tube |
| CN107782192B (en) * | 2017-10-27 | 2023-12-01 | 华南理工大学 | Stepped grid inner and outer finned tube for evaporation and condensation |
| CN109000494A (en) * | 2018-08-16 | 2018-12-14 | 上海欧贡制冷科技有限公司 | A kind of evaporating heat-exchanging pipe |
| CN114061358A (en) * | 2020-08-03 | 2022-02-18 | 青岛海尔空调电子有限公司 | Heat exchange tube of falling film evaporator |
| CN113218111A (en) * | 2021-06-03 | 2021-08-06 | 珠海格力电器股份有限公司 | Evaporator heat exchange tube, evaporator and air conditioning unit |
| CN113720176A (en) * | 2021-08-12 | 2021-11-30 | 北京航空航天大学 | Micro-channel heat exchanger with secondary fins |
| EP4390292A1 (en) | 2022-12-22 | 2024-06-26 | Wieland-Werke AG | Heat exchanger tube |
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2009
- 2009-04-29 CN CN2009101357867A patent/CN101556125B/en active Active
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| Publication number | Publication date |
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| CN101556125A (en) | 2009-10-14 |
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Denomination of invention: Heat-transfer pipe of evaporator Effective date of registration: 20171215 Granted publication date: 20120215 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Wuxi Golden Dragon Kawamura Precision Tube Co., Ltd.|Chongqing Longyu Precision Copper Tube Co., Ltd.|Henan Longhui Copper Industry Co., Ltd.|Xinxiang Jinxiang Precision Pipe Fittings Co., Ltd.|Xinxiang Longteng Refrigeration Technology Co.,Ltd.|Jiangsu Canghuan Copper Industry Co.,Ltd.|Jinlong Precision Copper Pipe Group Co., Ltd.|Guangdong Longfeng Precise Copper Tube Co., Ltd. Registration number: 2017990001045 |
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Address after: 404000 588 Airport Road, Wanzhou District, Chongqing (Wanzhou Economic Development Zone) Patentee after: Jinlong Precision Copper Pipe Group Co., Ltd. Address before: 453000 No. 191 Renmin West Road, Henan, Xinxiang Patentee before: Jinlong Precision Copper Pipe Group Co., Ltd. |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190814 Granted publication date: 20120215 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd. Registration number: 2017990001045 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Heat-transfer pipe of evaporator Effective date of registration: 20190830 Granted publication date: 20120215 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd. Registration number: Y2019990000127 |