CN106871689B - A kind of heat exchanger tube and heat exchanger with inner fin - Google Patents
A kind of heat exchanger tube and heat exchanger with inner fin Download PDFInfo
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- CN106871689B CN106871689B CN201710282193.8A CN201710282193A CN106871689B CN 106871689 B CN106871689 B CN 106871689B CN 201710282193 A CN201710282193 A CN 201710282193A CN 106871689 B CN106871689 B CN 106871689B
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- heat exchanger
- protrusion
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- strip
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- 238000005452 bending Methods 0.000 claims description 19
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000001124 body fluid Anatomy 0.000 claims 1
- 239000010839 body fluid Substances 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 17
- 239000007789 gas Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 238000005192 partition Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 206010001497 Agitation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- 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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- 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 relates to a kind of heat exchanger tube and heat exchanger with inner fin, it include: the tube body that cross sectional shape is strip rectangle, the corresponding a plurality of pairs of strip recess being equipped with along the tube fluid direction of motion in top and bottom, a plurality of strip recess form strip protrusion in outer surface of tube body in the tube body；The fin with point boss or short-term shape protrusion is connected at least one in corresponding strip recess up and down.The present invention is by way of being arranged radiating fin in heat exchanger tube, increase heat-transfer area, fin is secondary heat-transfer area, thermal current heats fin, heat on fin is by the strip projected parts on heat exchanger tube while being transferred to heat exchange pipe surface, be transmitted in cooling liquid by strip projected parts, the dotted or short-term shape being arranged on fin can stir with Interference Flow gas, avoid carbon distribution and improve heat exchange efficiency.Since tube body and fin can be with punching productions, under the premise of meeting heat exchange demand, it is possible to reduce the arrangement of fin, fin are reduced, and solder joint is less, and reliability is improved, and welding is very convenient, are suitable for producing in enormous quantities, have the lower advantage of manufacturing cost.
Description
Technical field
The present invention relates to a kind of heat exchanger tube and heat exchanger with inner fin is a kind of setting of using of automobile engine
It is standby, it is equipment used in a kind of facility of engine, is heat-exchange apparatus used in a kind of engine EGR system.
Background technique
For heat exchanger, improve heat exchange efficiency and reduce the volume of heat exchanger, be always the direction studied in the industry and
Theme is keeping or is increasing heat exchanger effectiveness as far as possible especially for the heat exchanger in automobile engine is applied
Under the premise of, the volume for reducing heat exchanger is even more important.Simultaneously it is also contemplated that the processing performance of product, if it is raw to meet high-volume
The needs of production.
Conventional heat exchanger is essentially two kinds of forms: plate fin type heat exchanger and shell-and-tube exchanger, both heat are handed over
Parallel operation respectively has advantage and disadvantage.
Shell-and-tube exchanger is that tube bank, cold and hot two kinds of fluids is arranged in the shell that a cylindrical shape or section are rectangle
Space and the pipe external space flow through the exchange for carrying out heat out of pipe respectively.Such heat exchanger selection range is wide, and structure is simple, work
Skill is good, is suitble to produce in enormous quantities.But the heat exchange efficiency of shell heat exchanger is lower with respect to plate fin type heat exchanger, can pass through
Strengthen internal heat exchange tubes to improve heat exchange efficiency, but the pressure loss can be increased accordingly, due to the heat exchanger tube of shell heat exchanger
Between must have certain gap, therefore, volume is relatively large.
Plate-fin heat exchanger is by the secondary surface composition between many block thin plates and plate, and secondary surface had both been used as rib face,
It can play the role of tube sheet spacing and strengthen rigidity again.Such heat exchanger relative volume is smaller, and heat exchanger effectiveness is higher, but ties
Structure is complicated, manufacturing cost is high.
Traditional plate fin type heat exchanger is usually Integral finned design, fin along it is axial be flat, with starting
Raising of the machine to cooler for recycled exhaust gas performance requirement can come under the confined space by using waveform integral fins
Heat exchange efficiency is improved, but the spacing of fin must be reduced constantly to reach high-performance, it in this way can in the case where carbon distribution generates
The blocking between fin can be caused, to prevent the performance of cooler from effectively being played；In addition, due to fin and flat tube or
The contact point of partition is more, that is, pad is more, is easy to produce failure, same right in the case where fin is fallen off
Heat exchange property can generate large effect.
Summary of the invention
In order to overcome the problems of the prior art, the invention proposes a kind of heat exchanger tube and heat exchanger with inner fin.
Traditional plate-fin and shell-and-tube exchanger are combined, fin are arranged in heat exchanger tube by the heat exchanger tube and heat exchanger,
Form a kind of completely new heat exchanger tube.
The object of the present invention is achieved like this: a kind of heat exchanger tube with inner fin, comprising: cross sectional shape is strip square
The tube body of shape, the corresponding a plurality of pairs of strip recess being equipped with along the tube fluid direction of motion in top and bottom in the tube body,
The a plurality of strip recess forms strip protrusion in outer surface of tube body；At least one is connected in corresponding strip recess up and down
Band has the fin of point boss or short-term shape protrusion.
Further, the tube body is made of upper and lower two parts.
Further, the outer surface of tube body is equipped with support protrusion.
Further, the fin is being equipped with bending with tube body recess engaging portion.
Further, dot bulge described on fin is round or ellipse protrusion.
Further, the short-term shape protrusion is the rectangle of four rounding of angle, or the knot to be rectangle among the semicircle of both ends
Zoarium, or be half of fairing.
Further, described two one group of short-term shape protrusion, every group of two short-term shape protrusions are arranged in splayed, described
The arrangement mode of splayed arrangement short-term shape protrusion are as follows: head to head, the head that foot occurs repeatedly in foot or two splayeds are pairs of
There is foot repeatedly in correct foot.
Further, the fin is monolithic setting, and raised projected direction is staggeredly to be spaced positive and negative setting.
Further, the fin is biplate setting, the protrusion direction on monolithic fin facing one direction, two wings
Piece is combined, and forms opposite both direction protrusion.
A kind of heat exchanger using the above-mentioned heat exchanger tube with inner fin, comprising: sequentially connected diffuser, diffuser
End pipe plate, heat exchange tube assemblies and shell, collector end pipe plate, collector；And water inlet pipe and outlet pipe, the set of heat exchange tubes
Part has inner fin heat exchange tube using at least one set of.
The beneficial effect comprise that: the present invention increases and passes by way of radiating fin is arranged in heat exchanger tube
Hot face, fin are secondary heat-transfer area, and thermal current heats fin, and the heat on fin is being transmitted by the strip projected parts on heat exchanger tube
To heat exchange pipe surface while, be transmitted in cooling liquid by strip projected parts, the dotted or short-term shape energy being arranged on fin
Enough agitations and Interference Flow gas avoid carbon distribution and improve heat exchange efficiency.Since tube body and fin can be with punching productions, full
Under the premise of sufficient heat exchange demand, it is possible to reduce the arrangement of fin, fin are reduced, and solder joint is less, and reliability is improved, welding ten
It is convenient to divide, and is suitable for producing in enormous quantities, has the lower advantage of manufacturing cost.Use the heat converter structure ten of this heat exchanger tube
Point compact, heat exchange property with higher is not easy incrustation, and cost is relatively low.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of heat exchanger tube described in the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of heat exchanger tube described in the embodiment of the present invention one, is the sectional view of the A-A in Fig. 1；
Fig. 3 is the structural schematic diagram of tube body described in the embodiment of the present invention two；
Fig. 4 is the schematic diagram that protrusion is arranged on tube body described in the embodiment of the present invention three；
Fig. 5 is the schematic diagram of fin edges bending described in the embodiment of the present invention four；
Fig. 6 is the fin schematic diagram that circular protrusions are had described in the embodiment of the present invention five, is B direction view in Fig. 5；
Fig. 7 is the fin schematic diagram that elliptical shaped lobes are had described in the embodiment of the present invention five, is B direction view in Fig. 5；
Fig. 8 be described in the embodiment of the present invention six have rectangle short-term section protrusion fin schematic diagram, be in Fig. 5 B to
View；
Fig. 9 is the wing with the combination protrusion for being rectangle described in the embodiment of the present invention six, seven among the semicircle of both ends
Piece schematic diagram is B direction view in Fig. 5；
Figure 10 is the fin signal of the short-term section protrusion described in the embodiment of the present invention six, seven with half of fairing
Figure, is B direction view in Fig. 5；
Figure 11 is the fin schematic diagram with double splayed short-term section protrusions described in the embodiment of the present invention seven, therein
The shape of short-term section protrusion is the rectangle of four rounding of angle, is B direction view in Fig. 5；
Figure 12 is the fin schematic diagram with double splayed short-term section protrusions described in the embodiment of the present invention seven, therein
The shape of short-term section protrusion is the combination among the semicircle of both ends for rectangle, is B direction view in Fig. 5；
Figure 13 be monolithic fin ellipse described in the embodiment of the present invention eight interlock protrusion fin schematic diagram, be Fig. 7
Middle C direction view；
Figure 14 is the fin schematic diagram of the streamlined staggeredly protrusion of monolithic fin described in the embodiment of the present invention eight, is Figure 10
Middle D direction view；
Figure 15 is positive and negative staggered biplate fin separate state diagram described in the embodiment of the present invention nine；
Figure 16 is that positive and negative staggered biplate fin described in the embodiment of the present invention nine is combined status diagram；
Figure 17 is the biplate fin separate state diagram of positive and negative one-to-one correspondence arrangement described in the embodiment of the present invention nine；
Figure 18 is that the biplate fin of positive and negative one-to-one correspondence arrangement described in the embodiment of the present invention nine is combined state signal
Figure；
Figure 19 is heat exchanger appearance schematic diagram described in the embodiment of the present invention ten；
Figure 20 is heat exchanger sectional view described in the embodiment of the present invention ten, is the sectional view of E-E in Figure 19.
Specific embodiment
Embodiment one:
The present embodiment is a kind of heat exchanger tube with inner fin, as shown in Figure 1.The present embodiment includes: that cross sectional shape is length
The tube body 1 of rectangle, the corresponding a plurality of pairs of strip being equipped with along the tube fluid direction of motion in top and bottom in the tube body
Recess 2, a plurality of strip recess form strip protrusion 3 in outer surface of tube body；Connect in corresponding strip recess up and down
It is connected to the fin 5 that a few band has point boss or short-term shape protrusion 4, sees Fig. 2.
Tubular form described in the present embodiment is similar to traditional flat tube, and cross sectional shape is the longer rectangle of long side, or
It is briefly that the flat tube that cross section is elongated is also possible to semicircle mistake as shown in Fig. 2, two short sides of rectangle can be straight flange
Cross (the tube body cross sectional shape in such as Fig. 2).
Tube body can be formed with a piece of sheet metal bending, can also be divide into upper part and lower part, and be overlapped again after bending and molding or right
It connects and welds together.
The key of the present embodiment is the fin provided with multi-disc conduction heat in pipe, the primary heat transfer relative to flat tube
Face, fin are secondary heat-transfer area, these fins are arranged along the flow direction of air-flow, and securely connect with tube body, and tube body is divided
For multiple narrow spaces, after thermal current enters tube body, dispersion into these small spaces.Thermal current is in these small spaces
When middle movement, the fin of composition small space is come into full contact with, and the heat in gas is conducted to fin, fin is again by heat
It is transmitted on the tube wall contacted with coolant liquid, coolant liquid takes away heat.
Along the raised or sunken of axial regular arrangement arch form or aerofoil profile on fin, these protrusions and recess can be done
The flowing for disturbing gas makes it generate turbulent flow at raised or sunken place, can either adequately generate heat spreading function, also can be avoided product
Carbon.Traditional fin is to improve heat exchange property, need to further decrease fin height, increase the risk of clogged with soot, therefore,
The relatively traditional fin heat exchange pipe of the present embodiment has apparent advantage.
What is be arranged on fin is raised or sunken there are many mode.Single arch can be arranged along axial same position in fin
Type it is raised or sunken, can also arrange the raised or sunken of a pair of of aerofoil profile, the same side of fin can see protrusion and it is recessed
Sunken arch form or aerofoil profile is staggered, the two sides protrusion of same fin and recess be it is opposite, side is that the raised other side is then right
It should be recessed.The shape of protrusion is intermediate projections, and periphery extends naturally to fin body, and raised height is 0.4-2mm.This seed wing
Piece is particularly suitable for use as the heat exchange element of exhaust gas recycling (abbreviation EGR) cooler, is placed on flat pipe or partition in groups
Between, the groove of strip is disposed in the plane of flat pipe or partition, fin is fixed with groove, forms the stream of high-temp waste gas
Circulation passage significantly increases the disturbance of fluid, thermal boundary layer due to arch form on fin or the raised or sunken arrangement of aerofoil profile
It is effectively thinned, so that the heat transfer effect of cooler is further promoted compared with conventional fins, while being also not easy incrustation.
On the fin of strip, in terms of a side, it is disposed with protrusion and recess, is seen in the another side of fin, it is convex
It rises and is seen as being recessed in the another side of fin, recess is seen as protrusion in the another side of fin, and protrusion is opposite with the shape of recess
It answers, raised shape is intermediate projections, and periphery extends naturally to fin body and be connected to fin body, fin radially edge
There is small straight bending.
Fin described in the present embodiment is strip fin, and radially the small straight bending in edge is C-shaped or in " Z "
Type can effectively enhance the intensity of welding for the overlap joint of fin and pipe or partition corresponding flat.
It is raised or sunken described in the present embodiment to be arranged alternately.Fin is only arranged in heat exchange as main heat exchange element
Its effect could be effectively played in device.Fin parallel arrangement is between flat tube or two partitions, when gas passes through between fin
When, the protrusion for the two panels fin that is connected is corresponding with recess, makes airflow direction that biggish bending occur, with the advance of air-flow, gas
It flows direction and bending occurs to other direction, flow path is in " S " type, on the one hand extends the flow direction of air-flow, on the other hand
Intense impact of the air-flow by protrusion, increases the disturbance of gas, is greatly thinned thermal boundary at improving the turbulent flow of fluid
Degree, heat transfer effect greatly improve.Traditional fin is integral design, the spacing to realize higher heat exchange efficiency, between fin
It is smaller, and the heat exchanger of the fin is used, under same boundary condition, it is possible to reduce the quantity of fin makes fin
Spacing increases, to reduce the risk of carbon distribution.
Raised or sunken depth on fin can control in 0.4 ~ 2mm, be adjusted according to the requirement difference of heat exchange property
It is whole, individually fin is processed, the processing cost of part can be effectively reduced, to reduce whole manufacturing cost.
The upper and lower surface parallel arrangement of tube body has the protrusion of strip, and in terms of tubular body, the protrusion in outside is in pipe
Strip groove；The upper and lower surface of tube body there also is provided bulge, and the bulge of upper and lower surface is symmetrical.Due to tube body end needs and tube sheet
Weld together, therefore tube body end need to reserve flat section, that is, pipe end of the long striped groove apart from tube body to have it is certain away from
From distance range is 2 ~ 10mm.Fin and the intracorporal groove one-to-one correspondence of pipe are placed within pipe.
Fin is placed in the intracorporal groove of pipe, and is corresponded, since groove distance pipe end has a certain distance, accordingly
Fin also have a certain distance away from pipe end.The height of fin is equal to the depth that tube body inner height adds two grooves, fin edge
Radial straight bending with the plane in groove is just corresponding overlaps, can effectively improve weld strength herein.
The bulge of two adjacent outer surface of tube body is corresponding, plays the role of supporting mutually, prevents the thermal deformation of tube body, thus
Solder joint falls off on flat tube at prevention fin, the effective realization for ensureing heat exchange property.
Raised or sunken shape on fin is that can be cubic, is rectangle with fin junction.Along fin axis
To the same position of (airflow direction) arrangement, there are two raised or sunken, two raised or sunken arrangements at an angle, angles
It is 15 ~ 165 °.The raised or sunken axial direction (airflow direction) that may be arranged to along fin, one group of protrusion and one group of recess on fin
It is arranged alternately, the protrusion and recess being arranged alternately are positive aerofoil profile and aerofoil profile alternates.
Raised or sunken shape tapered (can be similar to fairing, the cross sectional shape of the fairing on fin
Be it is streamlined, fairing is formed after revolution), streamwise, section becomes larger, then reduces rapidly, between the face of each protrusion
Rounding off.Arrange that there are two in parallel raised or sunken along the same position of fin axial direction.When high-temperature gas leads between fin
Out-of-date, by the intense impact of two lateral process, gas constantly shrinks and expands, and disturbance is obvious, is effectively thinned thermal boundary
Layer improves heat transfer effect.Compared with traditional finned heat exchanger, using the heat exchanger of the fin, the spacing of fin increases,
To reduce the risk of carbon distribution, heat exchange efficiency is made to remain at higher level.
Fin can arrange that two panels fin is superimposed to form a combination fin with biplate, combine the appearance of fin
Face is protrusion.Each fin only includes unilateral protrusion, is sequentially arranged after fin stack combinations as independent heat exchange element
In a heat exchanger.High-temperature gas passes through between combining fin, due to staggeredly raised presence, so that the flow path of gas is in
Waveform.
Two identical fins are superimposed to form a combination fin, and combination fin is arranged in sequence, answer
With in a heat exchanger when, fin be placed in flat tube or partition between.The bulge-structure of fin can effectively increase fluid
Turbulivity improves the heat exchange efficiency of heat exchanger.
Embodiment two:
The present embodiment is the improvement of embodiment one, is refinement of the embodiment one about tube body.Tube body described in the present embodiment
It is made of upper and lower two parts 101,102, as described in Figure 3.
For tube body easy to process, tube body is divide into upper part and lower part by the present embodiment, after bending, is connected to become in dogleg section
One.That is, tube body has two boards bending to be welded, there are two connect weld bond.The tube body designed in this way has very good
Good processing performance.Strip protrusion in tube body plate face can be with very convenient punch forming, while also facilitating fin convenient
It is welded in tube body.The interface of upper and lower two parts tube body can be designed symmetrically in the two sides of tube body, can also be as in Fig. 3
The tube body staggered position for being disposed proximate to side bending like that.Since the shape of upper lower tube body is completely the same, can be used same
The molding of one mould punching, saves the cost of mold.
Embodiment three:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about tube body.Described in the present embodiment
Outer surface of tube body is equipped with support protrusion 103, as shown in Figure 4.
Heat exchanger tube is passed through high-temperature gas at work, and tube body itself can thermally expand, and becomes the distance between heat exchanger tube
Small, this is extremely harmful.The distance between heat exchanger tube becomes smaller, it is meant that the circulation passage of coolant liquid narrows, and affects cooling
Liquid band walks the efficiency of heat.To maintain the distance between heat exchanger tube constant, the present embodiment is provided with dotted or short-term outside tube body
The protrusion of shape, the protrusion interaction between two adjacent heat exchange tubes, can effectively place close to each other between tube body, dimension
Hold mutual distance.
Example IV:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about fin.Described in the present embodiment
Fin is being equipped with bending 501 with recess engaging portion, as shown in Figure 5.
Fin described in the present embodiment is strip fin, and radially edge is equipped with small straight bending.This bending
There are two types of modes, and one kind is in " C " font, as in Figure 2-4.Another kind is in " Z " font, as shown in Figure 5.This fin edges
Small bending for fin and the obverse overlap joint of tube body, can effectively enhance the intensity of welding.
Embodiment five:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about the dot bulge on fin.This
Dot bulge described in embodiment is round, as shown in fig. 6, or elliptical shaped lobes, as shown in Figure 7.
Circular protrusions and elliptical shaped lobes be it is a kind of process fairly simple convex shape, and can play very good
Interference air motion effect.There are many arrangement mode of circular protrusions and elliptical shaped lobes on fin, can be single row
Column are also possible to the round or ellipse arrangement of two rows or three rows.For ellipse, and also there are two types of selection, one
Kind is that the long axis of ellipse is consistent with air motion direction, and one is the long axis of ellipse is vertical with airflow direction.
Embodiment six:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about the short-term shape protrusion on fin.
Short-term shape protrusion described in the present embodiment is the rectangle of four rounding of angle, as shown in figure 8, or the knot among the semicircle of both ends to be rectangle
Zoarium, as shown in figure 9, or be half of fairing, as shown in Figure 10.
There are many selections for the shape of short-term shape protrusion, can be rectangle, two semicircles centres plus rectangle of four rounding of angle etc..
The mode of arrangement also there are many selection, can be long axis along multiple choices such as airflow direction, vertical direction, inclined directions.
To generate preferable flow-disturbing effect, the big end of fairing meets the setting of air-flow face.
Embodiment seven:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about fin.It is short described in the present embodiment
Linear two one group of protrusion, every group of two short-term shape protrusions are arranged in splayed, the splayed arrangement short-term shape protrusion
Arrangement mode are as follows: head to head, foot occur repeatedly to foot, as shown in Figure 8,9 or the pairs of head to head foot of two splayeds is to foot
Occur repeatedly, as shown in Figure 11,12.
Arrangement of the present embodiment middle short line shape protrusion on fin is in splayed, or referred to as aerofoil profile arranges, specifically: it is short
Threadiness is raised into appearance, the long axis of two short-term shape protrusions respectively with airflow direction at opposite certain angle, be similar to
The wing of sweepback or splay one stroke to the left and another to the right.The angle of angle between the long axis and airflow direction of short-term shape protrusionα?
It is selected between 0 ~ 90 degree, sees Fig. 8,9.
Embodiment eight:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about fin.Described in the present embodiment
Fin is monolithic setting, and raised projected direction is staggeredly to be spaced positive and negative setting.
The projected direction of protrusion, if described from the single side angle of fin, can be incited somebody to action for fin plate face
Fin surface describes to be recessed for a protrusion, one, occurs repeatedly.Figure 13 is the elliptical shaped lobes staggeredly occurred, and Figure 14 is to hand over
The streamlined protrusion that mistake occurs.
Embodiment nine:
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about fin.Described in the present embodiment
Fin is biplate setting, and facing one direction, two fins are combined the protrusion direction on monolithic fin, form opposite two
A direction protrusion.
The biplate setting, is exactly that there are two fins together with, the protrusion direction on each fin is unanimously to a side
To the protrusion on fin is back-to-back, and two are combined.Figure 15,17 show the separated state of two panels fin, and Figure 16,18 are shown
The state that two panels fin is combined is shown.
Figure 15-19 shows two different protrusion arrangement modes, and one is the modes at positive and negative interval, as shown in Figure 15,16.
Another kind is positive and negative one-to-one mode, as shown in Figure 17,18.
Embodiment ten:
A kind of heat exchanger using the heat exchanger tube described above with inner fin, comprising: sequentially connected diffuser 7,
Diffuser end tube sheet 8, heat exchange tube assemblies and shell 9, collector end pipe plate 10, collector 11；And water inlet pipe 12 and outlet pipe
13, see Figure 19, the heat exchange tube assemblies 14 have inner fin heat exchange tube using at least one set of, see Figure 15.
Heat exchanger described in the present embodiment is particularly suitable for engines exhaust gas recirculation cooling system, cooling as EGR
Device uses.
Heat exchange tube assemblies used in heat exchanger described in the present embodiment are the flat tubes with inner fin, the fin in pipe
Along the raised or sunken of the regular interlaced arrangement arch form of airflow direction or aerofoil profile, and end radially is disposed with small folding
It is curved, a plurality of strip protrusion is set along pipe range direction in the plane of flat-shaped tube outer surface, the inside of flat pipe corresponds to groove, long
Strip fin is arranged in inside flat pipe in corresponding strip-shaped groove, and the bending on fin is affixed with flat tube upper groove inner plane
It closes, it is ensured that the fastness of welding；The fixed circulation passage for forming high-temp waste gas in a groove of fin, due to arch form on fin
Or the raised or sunken arrangement of aerofoil profile, the disturbance of fluid is significantly increased, thermal boundary layer is effectively thinned, so that cold
But the heat transfer effect of device is further promoted compared with conventional fins, while being also not easy incrustation.Coolant is formed between flat pipe and shell
Circulation passage, flat-shaped tube outer surface be also evenly arranged several be higher than strip protrusion bulges, arrange in a heat exchanger
Adjacent flat pipe mutually supported by bulge, flat pipe temperature distortion is avoided, simultaneously because the setting of bulge is so that cooling
The flowing of liquid is reinforced, and has facilitation to the heat exchange property for improving cooler.
Heat exchanger tube can occur in groups, if there is two groups of heat exchanger tubes in Figure 15, can also there is more multiple groups heat exchanger tube.
Finally it should be noted that being only used to illustrate the technical scheme of the present invention and not to limit it above, although referring to preferable cloth
The scheme of setting describes the invention in detail, those skilled in the art should understand that, it can be to technology of the invention
Scheme (such as form, straight tube or U-tube of tube body, the form of fin, projection form, the form of heat exchanger etc.) is modified
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. a kind of heat exchanger tube with inner fin characterized by comprising cross sectional shape is the tube body of strip rectangle, described
The corresponding a plurality of pairs of strip recess being equipped with along tube body fluid movement direction in top and bottom in tube body, described is a plurality of pairs of
Strip recess forms strip protrusion in outer surface of tube body；Band is connected at least one a little in corresponding strip recess up and down
The fin of shape protrusion or short-term shape protrusion, the height of the protrusion are 0.4-2mm；The fin is strip fin, institute
The fin stated is being equipped with straight bending with the strip of tube body recess engaging portion, the fin radially small described in edge
Straight bending is C-shaped or in " Z " type.
2. heat exchanger tube according to claim 1, which is characterized in that the tube body is made of upper and lower two parts.
3. heat exchanger tube according to claim 2, which is characterized in that the outer surface of tube body is equipped with support protrusion.
4. heat exchanger tube according to claim 3, which is characterized in that the dot bulge is round or ellipse on fin
Protrusion.
5. heat exchanger tube according to claim 3, which is characterized in that the short-term shape protrusion is the rectangle of four rounding of angle,
Or the combination among the semicircle of both ends to be rectangle, or be half of fairing.
6. heat exchanger tube according to claim 5, which is characterized in that described two one group of short-term shape protrusion, every group two short
Linear protrusion is arranged in splayed, the arrangement mode of the short-term shape protrusion of the splayed arrangement are as follows: single splay right
Head, foot occur repeatedly to foot or it is double it is splay head to head, there is foot repeatedly in foot.
7. the heat exchanger tube according to one of claim 4-6, which is characterized in that the fin is monolithic setting, raised
Projected direction is staggeredly to be spaced positive and negative setting.
8. the heat exchanger tube according to one of claim 4-6, which is characterized in that the fin is biplate setting, monolithic wing
Facing one direction, two fins are combined the protrusion direction of on piece, form opposite both direction protrusion.
9. a kind of heat exchanger using the heat exchanger tube for having inner fin described in claim 1, comprising: sequentially connected diffusion
Device, diffuser end tube sheet, heat exchange tube assemblies and shell, collector end pipe plate, collector；And water inlet pipe and outlet pipe, it is special
Sign is that the heat exchange tube assemblies have inner fin heat exchange tube using at least one set of.
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| CN201710282193.8A CN106871689B (en) | 2017-04-26 | 2017-04-26 | A kind of heat exchanger tube and heat exchanger with inner fin |
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| CN201710282193.8A CN106871689B (en) | 2017-04-26 | 2017-04-26 | A kind of heat exchanger tube and heat exchanger with inner fin |
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| CN106871689B true CN106871689B (en) | 2018-12-04 |
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| CN107819172B (en) * | 2017-10-25 | 2024-07-02 | 珠海格力电器股份有限公司 | Battery tube assembly, battery assembly and vehicle |
| CN108235658A (en) * | 2018-01-04 | 2018-06-29 | 钦州学院 | The bionical water cooling plate minitype radiator of imitative dragonfly wing micro-structure surface |
| CN112845941B (en) * | 2020-12-31 | 2024-09-10 | 深圳市嘉和达管业有限公司 | Equipment for manufacturing oil cooler pipe with reinforcing sheet |
| CN119353664A (en) * | 2024-12-23 | 2025-01-24 | 浙江金锅锅炉有限公司 | A split type glass fiber kiln heat pipe waste heat boiler |
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| CN2614340Y (en) * | 2003-04-09 | 2004-05-05 | 张慧君 | A heat exchange finned tube |
| CN1572407A (en) * | 2003-06-20 | 2005-02-02 | 株式会社电装 | Heat exchanger and its manufacturing method |
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