A kind of shell and tube cooler of spacing of fin rule change
Technical field
The invention belongs to field of heat exchangers, more particularly to a kind of heat exchanger of cooled beer, belong to the heat exchanger neck of F28D
Domain.
Background technology
The application is mainly used directly in the cooling of the medicated beer before medicated beer subpackage.
The medicated beer transported in bucket is preserved under a certain pressure using carbon dioxide, the dissolving of carbon dioxide in medicated beer
Spend with the difference of temperature and pressure and change, the dissolubility of carbon dioxide increases to reach in the freezing point of liquid beer in medicated beer
Maximum.But Solubilities of Carbon Dioxide is reduced with the reduction of the pressure of medicated beer in liquid beer.
The ability of the system that ice medicated beer is provided can be exceeded during the high demand to medicated beer, adjoint result is the beer of subpackage
The temperature of wine has exceeded expected range.As a result cause being discontented with for numerous clients as the medicated beer supplied does not have enough freezings,
And the excess foam of medicated beer in the system, is easily caused " the freezing " of medicated beer induction system, and this will cause whole medicated beer delivery system
The closing of system.
The content of the invention
The invention provides a kind of beer cooler, the temperature of the medicated beer supplied can be lower, is expending identical low-temperature receiver
In the case of cause medicated beer reach more preferable cooling effect.
To achieve these goals, technical scheme is as follows:A kind of shell-and-tube heat exchanger, the heat exchanger include
Housing and coil, beer inlet, medicated beer outlet, low-temperature receiver entrance and low-temperature receiver outlet, arrange coil, the Serpentiss in the housing
Shape pipe for multiple rows of, the termination up and down for often arranging coil stretch out from the top and bottom of housing respectively and respectively with beer inlet
Header is connected with medicated beer outlet header, and beer inlet header and outlet header are connected with beer inlet and medicated beer outlet respectively;Institute
Stating coil includes bent tube section and straight-tube portion, and the straight-tube portion is parallel to each other, and the bend pipe is by adjacent straight-tube portion
Connection gets up to form row's coil of connection;The low-temperature receiver entrance and low-temperature receiver outlet are separately positioned on the both sides of housing, cold
Source is entered from low-temperature receiver entrance, the medicated beer in cooling worm in housing, is then flowed out from low-temperature receiver outlet;The coil it is straight
Pipe portion is divided into finned tube, and the material of finned tube is aluminium alloy, and the mass percent of the component of the aluminium alloy is as follows:15.3%
Cu, 1.9% Mg, 1.6% Ag, 0.6% Mn, 0.25% Zr, 5.78% Ce, 0.23% Ti, 0.38% Si,
Remaining is Al.
A kind of shell-and-tube heat exchanger, the heat exchanger include that housing and coil, beer inlet, medicated beer outlet, low-temperature receiver enter
Mouth and low-temperature receiver outlet, arrange coil in the housing, the coil is multiple rows of, the termination up and down for often arranging coil point
Do not stretch out from the top and bottom of housing and connect with beer inlet header and medicated beer outlet header respectively, beer inlet header and
Outlet header is connected with beer inlet and medicated beer outlet respectively;The coil includes bent tube section and straight-tube portion, described straight
Tube portion is parallel to each other, and adjacent straight-tube portion connection is got up to form row's coil of connection by the bend pipe;It is described cold
Source inlet and low-temperature receiver outlet are separately positioned on the both sides of housing, and low-temperature receiver is entered from low-temperature receiver entrance, in cooling worm in housing
Medicated beer, then from low-temperature receiver outlet flow out;The straight-tube portion of the coil is finned tube, and finned tube includes main fin and from master
The secondary fin that fin extends, the width of main fin is b4, and the width of secondary fin is b2, wherein 2.0*b2<b4<2.3*b2.
A kind of shell-and-tube heat exchanger, the heat exchanger include that housing and coil, beer inlet, medicated beer outlet, low-temperature receiver enter
Mouth and low-temperature receiver outlet, arrange coil in the housing, the coil is multiple rows of, the termination up and down for often arranging coil point
Do not stretch out from the top and bottom of housing and connect with beer inlet header and medicated beer outlet header respectively, beer inlet header and
Outlet header is connected with beer inlet and medicated beer outlet respectively;The coil includes bent tube section and straight-tube portion, described straight
Tube portion is parallel to each other, and adjacent straight-tube portion connection is got up to form row's coil of connection by the bend pipe;It is described cold
Source inlet and low-temperature receiver outlet are separately positioned on the both sides of housing, and low-temperature receiver is entered from low-temperature receiver entrance, in cooling worm in housing
Medicated beer, then from low-temperature receiver outlet flow out;The heat exchanger also includes control system, output of the control system according to medicated beer
Temperature control enters the flow velocity of low-temperature receiver in heat exchanger;
The control system includes:Temperature sensor, flow controller and central controller, flow controller control are entered
The flow velocity of the low-temperature receiver of heat exchanger;The temperature sensor is used to measure the output temperature of medicated beer, and when output temperature, to reach first warm
When spending, central controller controls flow controller reaches the first flow velocity, when output temperature reach it is warm less than the second of the first temperature
When spending, central controller controls flow controller reaches the second flow speed less than the first flow velocity, when output temperature is reached less than
During three temperature of two temperature, central controller controls flow controller reaches the 3rd flow velocity less than second flow speed, works as output
When temperature reaches four temperature less than the 3rd temperature, central controller controls flow controller reaches less than the 3rd flow velocity
Four flow velocitys;When output temperature reaches five temperature less than the 4th temperature, flow controller cuts out by central controller, prevents
Low-temperature receiver enters heat exchanger.
A kind of shell-and-tube heat exchanger, the heat exchanger include that housing and coil, beer inlet, medicated beer outlet, low-temperature receiver enter
Mouth and low-temperature receiver outlet, arrange coil in the housing, the coil is multiple rows of, the termination up and down for often arranging coil point
Do not stretch out from the top and bottom of housing and connect with beer inlet header and medicated beer outlet header respectively, beer inlet header and
Outlet header is connected with beer inlet and medicated beer outlet respectively;The coil includes bent tube section and straight-tube portion, described straight
Tube portion is parallel to each other, and adjacent straight-tube portion connection is got up to form row's coil of connection by the bend pipe;It is described cold
Source inlet and low-temperature receiver outlet are separately positioned on the both sides of housing, and low-temperature receiver is entered from low-temperature receiver entrance, in cooling worm in housing
Medicated beer, then from low-temperature receiver outlet flow out;The straight-tube portion of the coil is finned tube, and the base tube of finned tube is square,
The width of fin is 0.03*L0 with the length relation on foursquare side<b4<0.05*L0.
A kind of shell-and-tube heat exchanger, the heat exchanger include that housing and coil, beer inlet, medicated beer outlet, low-temperature receiver enter
Mouth and low-temperature receiver outlet, arrange coil in the housing, the coil is multiple rows of, the termination up and down for often arranging coil point
Do not stretch out from the top and bottom of housing and connect with beer inlet header and medicated beer outlet header respectively, beer inlet header and
Outlet header is connected with beer inlet and medicated beer outlet respectively;The coil includes bent tube section and straight-tube portion, described straight
Tube portion is parallel to each other, and adjacent straight-tube portion connection is got up to form row's coil of connection by the bend pipe;It is described cold
Source inlet and low-temperature receiver outlet are separately positioned on the both sides of housing, and low-temperature receiver is entered from low-temperature receiver entrance, in cooling worm in housing
Medicated beer, then from low-temperature receiver outlet flow out;The straight-tube portion of the coil is finned tube, and the distance between fin is according to one
Fixed rule is changed, concrete rule be from the beginning of the midpoint on base tube side, to the two ends on side, fin the distance between it is more next
It is less.
Preferably, the straight-tube portion of the coil is finned tube, and the finned tube includes positioned at the rectangular of center
Body base tube and the fins set positioned at cuboid periphery, the cross section of the cuboid base tube is square, the fins set bag
The the first secondary fin for stretching out, the fins set are included from four foursquare main fins for diagonally stretching out and from main fin
Also include from foursquare four side the second secondary fin for stretching out, extend to same direction the first of the same main fin
Secondary fin is parallel to each other, and parallel to each other with the second secondary fin extended to same direction, and the main fin and secondary fin prolong
The end stretched forms equilateral octagon;
Angle between the secondary fin of described first and main fin is 45 °, and the distance of described adjacent secondary fin is L1,
The foursquare length of side is L0, and the height of the main fin is L2, and the relation of above-mentioned three meets equation below:
L1/L0=a*ln (L2/L0)+b, wherein ln are logarithmic functions,
0.025<a<0.05,0.05<b<0.06,
150mm<=L0<=180mm,
3mm<=L1<=8mm,
55mm<=L2<=85mm;
0.02<L1/L0<0.05,
0.30<L2/L0<0.55;
0.1<L1/H<=0.22;
The length of straight-tube portion is H, 800mm<H<1500mm.
Compared with prior art, beer cooler of the invention has the following advantages:
1)The invention provides a kind of new beer cooler, and because cooler can arrange more radiating fins
Piece, therefore there is good radiating effect.
2)Creative octagon finned tube is applied to medicated beer cooling, and achieves good cooling effect.
3)The present invention obtains the cooler fin pipe optimum results of the optimum of a medicated beer cooling by test of many times, and
And by being verified, so as to demonstrate the accuracy of result.
4)The boundary member formed by fin is octagon, can be caused between same row's fin in any position
Can be combined with each other, it is possible to increase heat-transfer effect.
5)Arranged by multiple rows of coil, the fin of the finned tube of coil can be caused to be brought into tight contact with each other, so that
Space is formed between adjacent four finned tubes, the space can meet the abundant flowing of enough low-temperature receivers.
Description of the drawings
Fig. 1 is the schematic cross-section of shell-and-tube beer cooler;
Fig. 2 is the main structure diagram of a straight-tube portion embodiment;
Fig. 3 is the close-up schematic view of Fig. 2;
Fig. 4 is 1/8 structural representation of straight-tube portion;
Fig. 5 is multiple rows of straight-tube portion schematic diagram arranged together mutually.
Reference is as follows:
1. cuboid pipe, 2. fins set, 3. main fin, 4 second secondary fins, 5 first secondary fins, 6 beer inlets, 7 medicated beer
Outlet, 8 straight-tube portions, 9 bent tube sections, 10 low-temperature receiver entrances, the outlet of 11 low-temperature receivers, 12 entrance headers, 13 outlet headers.
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in detail.
Herein, if no specified otherwise, it is related to formula, "/" represents division, and "×", " * " represent multiplication.
A kind of shell and tube cooler of cooled beer, the cooler include housing and coil, beer inlet 6, medicated beer
Outlet 7, low-temperature receiver entrance 10 and low-temperature receiver outlet 11, arrange coil in the housing, the coil be it is multiple rows of, it is described often to arrange Serpentiss
Stretch out from the top and bottom of housing respectively and connect with beer inlet header and medicated beer outlet header respectively in the termination up and down of shape pipe
Lead to, the entrance header and outlet header are respectively communicated with beer inlet 6 and medicated beer outlet 7,(Or preferably, no header,
Directly it is connected with beer inlet with outlet, as shown in Figure 1), the coil includes bent tube section 9 and straight-tube portion 8, described straight
Tube portion 8 is parallel to each other, and the adjacent connection of straight-tube portion 8 is got up to form row's coil of connection by the bent tube section 9;
The low-temperature receiver entrance 10 and low-temperature receiver outlet 11 are separately positioned on the both sides of housing, and low-temperature receiver is entered from low-temperature receiver entrance, cold in housing
But the medicated beer in coil, then flows out from low-temperature receiver outlet.
Preferably, multiple rows of coil can arrange a total header, entered by header distribution fluid and often arrange Serpentiss
Shape pipe.
Straight-tube portion is finned tube, and the finned tube is included positioned at the cuboid pipe 1 of center and positioned at cuboid
The fins set 2 of pipe periphery, the cross section of the cuboid pipe 1 is square, from from cross section, the fins set 2 include from
Four foursquare main fins 3 for diagonally stretching out and the first secondary fin 5 stretched out from main fin 3, the fins set 2
Also include from foursquare four side the second secondary fin 4 for stretching out, extend to same direction the of the same main fin 3
One secondary fin 5 is parallel to each other, and parallel to each other with the second secondary fin 4 extended to same direction, the main fin 3 and secondary wing
The end that piece 4,5 extends forms equilateral octagon.
Preferably, as shown in figure 3, the plane specular that formed along square diagonal of finned tube, while along
The plane that the line that the midpoint of foursquare two opposite side is located is formed is also specular.
Preferably, as shown in figure 3, the centrage of main fin 3 it is vertical with equilateral octagonal a line and with equilateral eight side
The junction point of shape is located at the midpoint on equilateral octagonal side.
As shown in Figure 3, it is preferred that the second secondary fin 2 ", 2 ' it is arranged at foursquare diagonal position.
As shown in Figure 3-4,1 ', 2 ', 1 ", 2 " the secondary fin of indication is the second secondary fin, 3 ', 4 ', 5 ', 3 ", 4 ", 5 "
The secondary fin of indication is the first secondary fin.
The length of the first secondary fin is with shorter and shorter apart from the diagonal distance of main fin.
In the case that the length on foursquare side is certain, main fin and secondary fin are longer, then heat transfer effect is better in theory,
Find in process of the test, when main fin and secondary fin reach certain length, then heat transfer effect just increases and fails to understand very much
It is aobvious, be primarily due to increase with main fin and secondary finned length, sink temperature is also become closer in the temperature of flight tip, with
Temperature reduces to a certain extent, then heat transfer effect being caused unobvious, the cost of material is also add on the contrary, meanwhile, heat exchange
During, if the spacing between secondary fin is too little, the deterioration of heat transfer effect is also easily caused, because with the increase of height,
Boundary region is thickening, causes boundary region between adjacent fins mutually to coincide, and deteriorates heat transfer, and the spacing between secondary fin causes greatly very much to change
Hot area is reduced, and have impact on the transmission of heat, therefore the length of the distance in adjacent secondary fin, the foursquare length of side, main fin
An optimized size relationship is met between degree.
Therefore, the present invention is the optimal wing summed up by thousands of test datas of multiple various sizes of finned tubes
The dimensionally-optimised relation of piece pipe.
Angle between the secondary fin of described first and main fin is 45 °, and the distance of described adjacent secondary fin is L1,
The foursquare length of side is L0, and the height of the main fin is L2, and the relation of above-mentioned three meets equation below:
L1/L0=a*ln (L2/L0)+b, wherein ln are logarithmic functions,
0.025<a<0.05,0.05<b<0.06,
150mm<=L0<=180mm,
3mm<=L1<=8mm,
55mm<=L2<=85mm;
0.02<L1/L0<0.05,
0.30<L2/L0<0.55;
0.1<L1/H<=0.22;
The length of straight-tube portion is H, 800mm<H<1500mm.
Preferably, a=0.038, b=0.055.
It should be noted that adjacent pair fin is to start the distance counted from the center of secondary fin apart from L1.
Tested after result of calculation again, by the numerical value for calculating border and intermediate value, the result of gained is basic
Upper to match with formula, substantially within 2%, maximum relative error is less than 3.5% to error, and mean error is 1.6%.
Compared with free convection, because shell and tube cooler has the higher coefficient of heat transfer, it is therefore desirable to finned tube
Finned length is fewer than in the case of free convection.Medicated beer cooling can also so be met, but also material and space can be saved,
The amount of cooling water of higher unit mass is reached, more preferable refrigeration is reached.
Preferably, the distance of described adjacent secondary fin is identical.Folder between wherein first secondary fin 5 and main fin 4
Angle is 45 ° means secondary fin 5 perpendicular to the diagonal a line of main fin, simultaneously as secondary fin is parallel to each other so that second
The foursquare side that secondary fin extends perpendicular to which.Mainly fully radiate to reduce flow dead, around prismatic finned tube
Fin design into the form being respectively perpendicular with the four of middle cuboid sides.
Preferably, the width of main fin is greater than the width of secondary fin.
Preferably, the width of main fin is b4, and the width of secondary fin is b2, wherein 2.0*b2<b4<2.3*b2;
Used as preferred, the width of main fin is 0.03*L0 with the length relation on foursquare side<b4<0.05*L0.
Preferably, the pipe thickness of cuboid pipe is 1-3mm, preferred 2mm.
Preferably, the integrated manufacture of finned tube, the material of finned tube is aluminium alloy, the matter of the component of the aluminium alloy
Amount percentage ratio is as follows:15.3% Cu, 1.9% Mg, 1.6% Ag, 0.6% Mn, 0.25% Zr, 5.78% Ce,
0.23% Ti, 0.38% Si, remaining is Al.
The manufacture method of aluminium alloy is:Using vacuum metallurgy melting, argon for protecting pouring is into round billet, uniform through 623 DEG C
Change is processed, and at 412 DEG C, using bar is hot extruded into, then again after 560 DEG C of solution hardening, carries out artificial aging at 210 DEG C
Process.Heat conductivity is more than 270W/ (m*k).
Compared with previous studies, by increasing Cu and Ce contents, can greatly optimize the anticorrosive of aluminum alloy materials
Property, while also having high heat conductivity.
Preferably, bent tube section is also adopted by making with straight-tube portion identical material.
Preferably, for the distance between secondary fin is changed according to certain rule, concrete rule is from pros
The midpoint on the side of shape starts, to while two ends with it is foursquare described while vertical secondary fin the distance between increasingly
It is little.
For example as shown in figure 3, positioned at cuboid side midpoint both sides adjacent two pair fin(Numbering is 1 ', 1 ")
Spacing is m, and other secondary spacings of fin are tapered into as the distance at the midpoint away from side becomes big.
Preferably, the amplitude that adjacent pair spacing of fin reduces is identical.For example fin 1 ', 1 " distance be m, 1 ", 2 " between
The distance between, 3 " m-2n, 3 ", apart from m-n, 2 " the distance between 4 " m-3n, the like.
The unit of n, m above is mm.
Under conditions of optimization formula above is met, n preferably distances are 1mm.
Spacing of fin presentation two broad in the middle is little, and its main purpose is the flow field for optimizing the panel region fin while again as far as possible
The heat exchange area of increase fin.Increase heat exchange area as far as possible so as to as far as possible on the premise of the coefficient of heat transfer is reduced not too much
Reduce junction temperature.
As shown in figure 5, straight-tube portion is leaning closely against together, also interconnect between the fin of its corresponding straight-tube portion,
So as to form the passage of low-temperature receiver.Because multiple finned tubes are close together, so that defining pros between adjacent four finned tubes
Shape space, this square space can cause low-temperature receiver to flow through from centre, so as to adjacent finned tube is distributed in flow process
Fin between, it is ensured that enough low-temperature receivers, to avoid cooling not enough.
Preferably, low-temperature receiver is ethylene glycol.It is experimentally confirmed, under above-mentioned size relationship, ethylene glycol can be obtained most
Good cooling effect.
Preferably, the cooler also includes control system, the control system is controlled according to the output temperature of medicated beer
The flow velocity of low-temperature receiver in cooler;
The control system includes:Temperature sensor, flow controller and central controller, flow controller control are entered
The flow velocity of the low-temperature receiver of cooler;The temperature sensor is used to measure the output temperature of medicated beer, and when output temperature, to reach first warm
When spending, central controller controls flow controller reaches the first flow velocity, when output temperature reach it is warm less than the second of the first temperature
When spending, central controller controls flow controller reaches the second flow speed less than the first flow velocity, when output temperature is reached less than
During three temperature of two temperature, central controller controls flow controller reaches the 3rd flow velocity less than second flow speed, works as output
When temperature reaches four temperature less than the 3rd temperature, central controller controls flow controller reaches less than the 3rd flow velocity
Four flow velocitys;When output temperature reaches five temperature less than the 4th temperature, flow controller cuts out by central controller, prevents
Low-temperature receiver enters cooler.
Above-mentioned temperature sensor is arranged on the position of medicated beer outlet, and flow controller is arranged on the position of the entrance of low-temperature receiver
Put.
The control system can be a single-chip microcomputer, can arrange control panel, and control panel is arranged on radiator
Top or bottom, it is also possible to be arranged on on the pipeline of radiator.
Preferably, be provided with projection on the inwall of coil 5, for augmentation of heat transfer, the raised distribution is according to one
Fixed rule.Preferably, along the flow direction of medicated beer, raised distribution is more and more closeer, so, is flowed with medicated beer
Direction, the temperature of medicated beer are gradually reduced so as to which refrigeration is gradually lowered, the density of the projection by increasing inner fins, can
To strengthen the refrigeration on medicated beer flow direction, so that the cold effect of political affairs is consistent on the whole along medicated beer flow direction.It is excellent
Gradually increase on the direction that another mode of choosing is raised height to flow with medicated beer, wherein highest is minimum
1.03-1.10 again.Identical with heat exchange principle above, main cause is the direction flowed with medicated beer, and the temperature of medicated beer is gradually
Decline so as to which refrigeration is gradually lowered, arrange different by increasing the height of internal protrusion, medicated beer flow direction can be strengthened
On heat exchange so that refrigeration is consistent on the whole along fluid flow direction.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
When being defined by claim limited range.