CN104713154B - It is coated with the anticorrosive radiator of special anti-corrosion layer - Google Patents
It is coated with the anticorrosive radiator of special anti-corrosion layer Download PDFInfo
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- CN104713154B CN104713154B CN201510116369.3A CN201510116369A CN104713154B CN 104713154 B CN104713154 B CN 104713154B CN 201510116369 A CN201510116369 A CN 201510116369A CN 104713154 B CN104713154 B CN 104713154B
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Abstract
The invention provides a kind of radiator, radiator includes the finned tube of upper header, lower collector pipe and connection upper header and lower collector pipe, and lower collector pipe arranges heating rod；The anticorrosive coat of special facture is set inside the pipe of described base tube.The present invention, by arranging anticorrosive coat, improves the resistance to corrosion of finned tube, considerably increases the service life of radiator.
Description
The application is to be 2013104831349 for original applying number, and invention and created name is the divisional application that the patent application of a kind of electric heating heat exchanger proposes.
Technical field
The invention belongs to field of heat exchangers, particularly relate to a kind of heating radiator.
Background technology
The terminal unit of Home Heating, thermal source is generally city central heating, self-built boiler room, community, Domestic wall stove etc., by conduction of heat, radiation, convection current heat spreader out, allows the temperature in room get a promotion.
In heat exchanger; it is suitable for finned tube exchanger at present widely; area of dissipation can be expanded by fin; strengthen heat transfer effect; but the quality of the setting of the heat exchanger types of finned tube and finned tube parameter all influencer radiating effects; and at present when energy crisis; urgent need to save the energy; meet the sustainable development of society; it is thus desirable to develop a kind of new finned tube, simultaneously need to the structure of finned tube is optimized so that it is reach maximum heat exchange efficiency; to save the energy, reach the purpose of environmental protection and energy saving.
Summary of the invention
The technical problem to be solved is in that to provide a kind of new linear type closed finned tube heat exchanger.
To achieve these goals, technical scheme is as follows: the finned tube exchanger of a kind of enclosed construction, finned tube including upper header, lower collector pipe and connection upper header and lower collector pipe, described finned tube includes circular base tube and the first fin, the second fin, the extended line of outside and the first fin and the second fin that the first fin and the second fin are arranged on base tube intersects at the central axis of the base tube at the place, the center of circle of base tube, the first fin and the second fin along by the first plane specular of the central axis of base tube；Described finned tube includes the 3rd fin and the 4th fin, described 3rd fin, the 4th fin along the second plane respectively with the first fin and the second fin specular, described second plane vertical with the first plane and also through the central axis of base tube；Arranging a connecting piece between described first fin and the second fin, arrange the second connection sheet between described 3rd fin and the 4th fin, it is straight linear metallic plate that a connecting piece and second connects sheet；A connecting piece of described adjacent base tube is in one plane, the second of adjacent base tube connects sheet in one plane, the plane that a connecting piece and second connects sheet place is parallel to each other, and the 3rd fin of the first fin, the second fin and adjacent fins pipe and the 4th fin form space；Described base tube is straight tube, and the central axis of described adjacent base tube is parallel to each other.
Angle between described first fin and the second fin is A, and the length of the first fin and the second fin is L, and the outer radius of base tube is R, and the relation of above-mentioned three meets equation below:
Sin(A/2)=a×(L/R)2+b×(L/R)+c
H/R=10×e×(Sin(A/2))f
Wherein, A unit is angle, 60 ° < A < 110 °,
L be of a size of mm, 15mm < L < 80mm,
The unit of R be mm, 10mm < R < 80mm,
The unit of H be mm, 600mm < H < 1200mm,
A, b, c, e, f are coefficient, and the scope ranging for 0.72-0.78, f ranging for 0.34-0.35, e ranging for 0.26-0.27, c ranging for 0.038-0.04, b of a is between-3.6 to-3.5.
The optimum results of coefficient is: a is 0.0397, b be 0.02684, c is 0.03477.
Preferably, the distance between adjacent base tube central axis is d × (L+R) × sin (A/2), and wherein d is coefficient, ranges for 1.05-1.2.
The material of described base tube and fin is aluminium alloy, and the mass percent of the component of described aluminium alloy is as follows: 3.0%Cu, 1.9%Mg, 1.6%Ag, 0.6%Mn, 0.25%Zr, 0.3%Ce, 0.23%Ti, 0.38%Si, and all the other are Al.
Arranging anticorrosive coat inside the pipe of described base tube, the outside of base tube is coated with coating rubbing-layer, and the thermal coefficient of expansion of anticorrosive coat, base tube and wearing layer increases successively.
Described heat exchanger also includes control system, and described control system controls to enter the flow velocity of water in heat exchanger according to indoor temperature.
Described control system includes: temperature sensor, flow controller and central controller, and flow controller controls to enter the flow velocity of heat exchanger；Described temperature sensor is used for measuring indoor temperature, when indoor temperature reaches the first temperature, central controller controls flow controller reaches the first flow velocity, when indoor temperature reaches the second temperature being higher than the first temperature, central controller controls flow controller reaches the second flow speed lower than the first flow velocity, when indoor temperature reaches three temperature being higher than the second temperature, central controller controls flow controller reaches the 3rd flow velocity lower than second flow speed, when indoor temperature reaches four temperature being higher than the 3rd temperature, central controller controls flow controller reaches the 4th flow velocity lower than the 3rd flow velocity；When indoor temperature reaches five temperature being higher than the 4th temperature, flow controller cuts out by central controller, stops water to enter heat exchanger.
Described anticorrosive coat is become to be grouped into by following:
Zinc flake 8.3%, aluminium oxide is 8%, and boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, and thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus.
Described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer.
The part axially closer to upper header and lower collector pipe at base tube does not have fin.
Base tube is greater than the length not having finless parts near upper fin near the length of the part not having fin of the part of lower collector pipe.
In upper header, the circulation area of fluid is gradually reduced along fluid flow direction.
The inside of upper header arranges deflector, and described deflector extends from the position of heat exchanger entrance pipe to the lower tilt of upper header.
The top wall of upper header extends from the position of heat exchanger entrance pipe to the lower tilt of upper header.
The shape of flow deflector is the shape of straight plate shape or arc.
Compared with prior art, present invention have the advantage that:
1) the invention provides a kind of new finned tube, and because the extension line of fin of finned tube overlaps with the center of circle of base tube, so that heat transfer effect reaches best；
2) present invention pass through test of many times, devise different tube diameters, differing heights, angle fin test, thus obtaining an optimum fin optimum results, and verified by test, thus demonstrating the accuracy of result；
3) by the reasonable distribution of the mass percent of the component to aluminium alloy, high-fire resistance and the high-termal conductivity of finned tube is improved；
4) thermal coefficient of expansion of anticorrosive coat, base tube and wearing layer increases successively, it is ensured that when logical hot water, and the expansion rate of each layer is identical, it is ensured that combining closely of each layer, it is prevented that come off；
5) by control system, automatically control the flow velocity of the water entering heat exchanger, keep room temperature to reach a stable numerical value；
6) there is no fin by the part axially closer to upper header and lower collector pipe at base tube, ensure that the air of base tube bottom can be smoothed out in the space of finned tube, reached good suction effect, also can guarantee that simultaneously air technique to top convection current, increase the effect of heat convection；
7) it is greater than the length not having finless parts near upper fin by base tube near the length of the part not having fin of the part of lower collector pipe, it is possible to increase convection effects；
8) by being gradually reduced of the circulation area of fluid in upper header so that fluid flow flow velocity keeps maximum, augmentation of heat transfer；
9) by the Based Intelligent Control of electric heater, it is achieved energy-conservation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of present invention heat exchanger.
Fig. 2 is the cross sectional representation of finned tube.
Fig. 3 is the schematic diagram of Heat Exchanger Control System.
Fig. 4 is Fig. 3 from the schematic diagram in terms of left side.
Fig. 5 is the heat exchanger schematic diagram with deflector.
Fig. 6 is the heat exchanger schematic diagram that upper header sectional area gradually tapers up.
Fig. 7 is the sectional drawing of second embodiment of the invention.
Fig. 8 is the schematic diagram of the base tube inner fin of the present invention.
Accompanying drawing labelling is as follows:
1 upper header, does not have the part of fin in 2 base tubes, 3 lower collector pipe, 4 finned tubes, 5 base tubes, 6 first fins, 7 gaps, 8 a connecting piece, 9 second fins, 10 the 4th fins, 11 the 3rd fins, 12 second connect sheet, 13 central controllers, 14 flow controllers, 15 temperature sensors, 16 temperature sensors, 17 heat exchangers, 18 inlet tubes, 19 outlets, 20 deflectors, 21 upper header upper surfaces, 22 vacuum-pumping tubes, 23 temperature controllers, 24 fins, 25 heating rods, 26 inner fins, 27 otch, 28 projections.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
A kind of finned tube exchanger 17 of enclosed construction, including upper header 1, lower collector pipe 3 and the finned tube 4 connecting upper header 1 and lower collector pipe 3, described finned tube 4 includes circular base tube 5 and first fin the 6, second fin 9, the extended line of outside and the first fin 6 and the second fin 9 that the first fin 6 and the second fin 9 are arranged on base tube 5 intersects at the base tube central axis at the place, the center of circle of base tube 5, and the first fin 6 and the second fin 9 are along by the first plane B specular of base tube central axis；Described finned tube includes the 3rd fin 11 and the 4th fin 10, described 3rd fin the 11, the 4th fin 10 along the second plane C respectively with the first fin 6 and the second fin 9 specular, described second plane C vertical with the first plane B and also through the central axis of base tube 5；Arranging a connecting piece 8 between described first fin 6 and the second fin 9, arrange the second connection sheet 12 between described 3rd fin 11 and the 4th fin 10, a connecting piece 8 and the second connection sheet 12 are straight linear metallic plate.Described base tube is straight tube, and the central axis of described adjacent base tube 5 is parallel to each other.
It is to be understood that as in figure 2 it is shown, the central axis of base tube is exactly a line of the set formation of the centre point on the cross section of base tube 5.
By above-mentioned setting so that fin be connected between sheet one gap 7 of formation, when heat convection, gap 7 is the formation of a kind of chimney effect, it is possible to strengthen heat exchange.
Preferably, in one plane, the second of adjacent base tube 5 connects sheet 12 in one plane to a connecting piece 8 of described adjacent base tube 5, and the plane at a connecting piece 8 and the second connection sheet 12 place is parallel to each other.
Preferably, the first fin of adjacent base tube is parallel to each other, represents that the second fin of adjacent base tube is also parallel to each other, and in like manner, the 3rd fin, the 4th fin are also parallel to each other.This feature shows that finned tube arranges according to equidirectional.This feature shows that finned tube arranges according to equidirectional.
Preferably, all being the same size of all finned tubes.
3rd fin of the first fin, the second fin and adjacent fins pipe and the 4th fin form space, and this space forms certain space, it is possible to form chimney effect, add strong convection, augmentation of heat transfer.
Angle between described first fin 6 and the second fin 9 is A, and the length of the first fin 6 and the second fin 9 is L, and the outer radius of base tube is R, and certainly, because specular, the length of the 3rd fin 11 and the 4th fin 10 is also L naturally.But find in practice, if in heat transfer process. fin angle is too small, then can hinder heat exchange, because the words that fin angle is too small, cause that the distance of the first fin and the second fin is too near, then temperature boundary layer in closed area along with the direction of base tube height starts overlap, it is saturated that gas temperature moves closer to heat close to tube wall temperature, flow resistance increases, finally worsen heat exchange on the contrary, the advantage of outer fin plays not out, same reason, constantly increase along with angle, make the distance connecting sheet distance base tube original more near, again such that temperature boundary layer in closed area along with the direction of base tube height starts overlap, it is saturated that gas temperature moves closer to heat close to tube wall temperature, flow resistance increases, finally worsen heat exchange on the contrary, therefore angle has an optimum.
For finned length, if oversize, even if then because the heat of base tube cannot arrive the end of fin in time or be effective also inconspicuous, if it is too short, then extension heat exchange area is too little, it is impossible to reaching a good heat transfer effect, therefore the height of fin also has an optimum.
For the distance between two finned tubes, if first distance is too near or completely close, then the space (referring to Fig. 1) of the spacing connecting sheet of two finned tubes is too little, the gap that then air cannot pass through between fin enters the space formed between finned tube, heat exchange now can only rely on and enter air from exchanger base, it is unable to reach good heat convection effect, same reason, if the distance is too far, then the one the second the 3rd the 4th fins of finned tube cannot form the space of effective chimney effect, thus causing that heat transfer effect is deteriorated, therefore a suitable numerical value is also required to for the distance between two finned tubes.
As shown in Figure 4, for fin along base tube 5 height H axially, it is also required to that there is a suitable numerical value, if fin height is too high, then on the top of fin, because boundary region in closed area along with the direction of base tube height starts overlap, cause the deterioration of heat exchange, in like manner, highly too low, then heat exchange does not give full play to, thus affecting heat transfer effect.
Therefore, the present invention is the size relationship of the finned tube of the best heat exchanger summed up by the test data of multiple various sizes of heat exchangers.Because finned tube also has included angle A, finned length L, fin height H these three variable, therefore, introducing two characteristic sin (A/2), L/R, H/R, R is the radius of base tube here, heat dissipation capacity maximum from heat transfer effect, calculates nearly 200 kinds of forms.Described size relationship is as follows:
Angle between described first fin and the second fin is A, and the length of the first fin and the second fin is L, and the outer radius of base tube is R, and fin is along base tube fin height H axially, and the relation of above-mentioned four meets equation below:
Sin(A/2)=a×(L/R)2+b×(L/R)+c
H/R=10×e×(Sin(A/2))f
Wherein, A unit is angle, 60 ° < A < 110 °,
L be of a size of mm, 15mm < L < 80mm,
The unit of R be mm, 10mm < R < 80mm,
The unit of H be mm, 600mm < H < 1200mm,
A, b, c, e, f are coefficient, and the scope ranging for 0.72-0.78, f ranging for 0.34-0.35, e ranging for 0.26-0.27, c ranging for 0.038-0.04, b of a is between-3.6 to-3.5.
Preferably, the distance between adjacent base tube central axis is S=d × (L+R) × sin (A/2), and wherein d is 1.05-1.2.
As in figure 2 it is shown, the distance between adjacent base tube central axis is exactly the distance on cross section between two base tube centers of circle.
Wherein d is preferably 1.13.
If independent using a finned tube as a product, then be still applicable to above-mentioned formula.Such as:
Angle between described first fin and the second fin is A, and the length of the first fin and the second fin is L, and the outer radius of base tube is R, and fin is along base tube fin height H axially, and the relation of above-mentioned four meets equation below:
Sin(A/2)=a×(L/R)2+b×(L/R)+c
H/R=10*e×(Sin(A/2))f
Wherein, A unit is angle, 60 ° < A < 110 °,
L be of a size of mm, 15mm < L < 80mm,
The unit of R be mm, 10mm < R < 80mm,
The unit of H be mm, 600mm < H < 1200mm,
A, b, c, e, f are coefficient, and the scope ranging for 0.72-0.78, f ranging for 0.34-0.35, e ranging for 0.26-0.27, c ranging for 0.038-0.04, b of a is between-3.6 to-3.5;
By testing after result of calculation, by the numerical value of computation bound, the result of gained substantially matches with formula again, and error is substantially within 4%, and maximum relative error is less than 6%, and mean error is 2%.
The result that coefficient optimizes: a is 0.0397, b be 0.02684, c be 0.03477, e be 0.7416, f is-3.545.
The material of base tube and fin is aluminium alloy, and the mass percent of the component of described aluminium alloy is as follows: 3.0%Cu, 1.9%Mg, 1.6%Ag, 0.6%Mn, 0.25%Zr, 0.3%Ce, 0.23%Ti, 0.38%Si, and all the other are Al.
The manufacture method of aluminium alloy is: adopt vacuum metallurgy melting, and argon for protecting pouring becomes circle base, through 600 DEG C of Homogenization Treatments, at 400 DEG C, adopts and is hot extruded into bar, then then through after 580 DEG C of solution hardening, carry out artificial aging process at 200 DEG C.Heat conductivity is more than 250W/ (m*k).
Base tube and fin can be integrally manufactured, it is also possible to split manufacture, base tube and fin can also be different materials, for instance base tube is above-mentioned aluminium alloy, and fin then can adopt other alloys, and wherein other alloys are composed as follows:
The following Ni30% of mass percent；Cr20%；Al6%；C0.03%；B0.016%；Co2%；Ti3%；Nb0.1%；La0.2%；Ce0.2%；Fe surplus.
The manufacture method of alloy is: becomes ingot by composition smelting and pouring according to electrothermal alloy in vaccum sensitive stove, then at 1200 DEG C-900 DEG C, alloy pig forge hot is become bar, be rolled into dish material at 1200 DEG C-900 DEG C, then become the silk material of different size in room temperature cold-drawn.
After tested, above-mentioned alloy has significantly high heat conductivity.
Arranging anticorrosive coat inside the pipe of described base tube 5, the outside of base tube is coated with coating rubbing-layer, and the thermal coefficient of expansion of anticorrosive coat, base tube and wearing layer increases successively.Why so arranging is because in the process of heat supply, the anticorrosive coat of the inside of finned tube is first heated, first expand, then it is outwards the second layer, third layer expanded by heating successively, therefore from inside to outside three layers expands number of times and increases successively and can ensure that expansion rate keeps consistent substantially, it is ensured that compactness that each layer connects and stability.
As it is shown on figure 3, described heat exchanger also includes control system, described control system controls to enter the flow velocity of water in heat exchanger according to indoor temperature.
Described control system includes: temperature sensor (is shown without in Fig. 3), flow controller 14 and central controller 13, and flow controller 14 controls to enter the flow velocity of the water of heat exchanger；Described temperature sensor is used for measuring indoor temperature, when indoor temperature is lower than the first temperature, flow controller is fully open, when indoor temperature reaches the first temperature, central controller controls flow controller reaches the first flow velocity, first flow velocity will lower than fully open flow velocity, when indoor temperature reaches the second temperature being higher than the first temperature, central controller controls flow velocity reaches the second flow speed lower than the first flow speed controller, when indoor temperature reaches three temperature being higher than the second temperature, central controller controls flow controller reaches the 3rd flow velocity lower than second flow speed, when indoor temperature reaches four temperature being higher than the 3rd temperature, central controller controls flow controller reaches the 4th flow velocity lower than the 3rd flow velocity；When indoor temperature reaches five temperature being higher than the 4th temperature, flow controller cuts out by central controller, stops water to enter heat exchanger.
5th temperature is exactly for significantly high temperature, for instance more than 25 degree, and the first temperature is exactly lower temperature, for instance less than 15 degree.By above-mentioned setting, it is possible to control the more heat of heat exchanger according to temperature, reaching to save the effect of the energy, especially next step to develop according to heat charging, therefore will necessarily receive an acclaim.
Furthermore, it is possible to arrange temperature sensor 15,16 to enter and go out the temperature of water of heat exchanger for measuring.
Described control system can be a single-chip microcomputer, it is possible to arrange control panel, and control panel is arranged on top or the bottom of heat exchanger, it is also possible to be arranged on the pipeline entering heat exchanger.
Described anticorrosive coat is to be generated by coating anticorrosive paint, and anticorrosive paint is become to be grouped into by following: zinc flake 8.3%, and aluminium oxide is 8%, boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus.
A kind of method preparing above-mentioned water-based anticorrosive paint, the method is implemented according to following steps,
A, by coating gross mass percentage ratio, weigh respectively a certain amount of water, 0.4% wetting dispersing agent and 0.23% defoamer, then admixed together, it is sufficiently stirred for so as to dissolve and make coating mixed liquor A 1, in mixed liquor A 1, add the flake metal powder of account for coating gross mass 8.3% again, stir and make coating mixed liquor A 2；
B, by coating gross mass percentage ratio, weigh 7.3% boric acid, form mixed liquor, join the water of 20%～40% fully dissolves and make mineral acid mixed liquid B 1, then to
Adding the oxidate powder of 8% in mixed liquid B 1, stirring makes mineral acid mixed liquid B 2 to without precipitation；
C, by coating gross mass percentage ratio, weigh the acrylic acid of 0.7%, join in the water of 5%～15%, stir and make reducing agent mixed liquor C；
D, by coating gross mass percentage ratio, weigh the thickening agent hydroxyethyl cellulose of 0.15%, join in the water of 2.5%～15%, stirring to dissolve be translucent shape and without gel occur namely stop stirring making thickening agent mixed liquor D；
E, the mineral acid mixed liquid B 2 of preparation is joined in coating mixed liquor A 2, it is subsequently adding the 1/5～1/2 of reducing agent mixed liquor C amount of preparation, add thickening agent mixed liquor D while stirring, add the water of surplus, continue stirring 30～90 minutes, until coating mixed liquor uniformity soilless sticking granule, finally add remaining reducing agent mixed liquor C, it is stirred for 10～40 minutes, to obtain final product.
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating.
Described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer.
As it is shown in figure 1, the part axially closer to upper header and lower collector pipe at base tube 5 does not have fin.So can ensure that the air of bottom can enter in the space formed between fin, out from air top, strengthen convection effects simultaneously.
As shown in Figure 4, base tube 5 is greater than the length not having finless parts near upper fin near the length of the part not having fin of the part of lower collector pipe.Being primarily due to be that lower air surface density is big, it is ensured that the entrance of more air, upper air density is little, and air is easier to rise, and air therefore can be kept to enter and go out finned tube amount and substantially keep consistent.
Preferably, bottom do not have the length of the part of fin account for base tube 5 length 5%, top do not have the length of the part of fin account for base tube 5 length 3%.
The inwall of base tube 5 can arrange fin, for instance can arrange straight fins or helical fin, and the height of described fin can along with being gradually increased on the direction of fluid flowing, and the highest fin height is minimum 1.05-1.1 times.Main cause is as the direction of fluid flowing, the temperature of fluid is gradually reduced so that it is heat transfer effect is gradually lowered, and arranges difference by increasing the height of inner fins, the heat exchange on fluid flow direction can be strengthened, so that heat transfer effect keeps consistent on the whole along fluid flow direction.
As shown in Figure 8, along the direction that inner fin 26 extends, inner fin 26 is arranged at intervals with otch 27.
Preferably, the degree of depth of otch 27 is 0.2-0.4 times of inner fin 26 height.The width of otch is the 30-60% of inner fin total length.
Preferably, along with the direction of fluid flowing, the increase gradually of the degree of depth of otch 27.Preferably, bosom is 1.05-1.15 times of the most shallow place.
Preferably, along with the direction of fluid flowing, the increase gradually of the density of otch 27.Preferably, thickness is 1.03-1.12 times of the thinnest place.
Preferably, inner fin is spiral inner fin, is 30-60 ° with the helical angle of the central axis of base tube 5.
Because in upper header on the flow direction of fluid, the flowing pressure of fluid is more and more less, so that finned tube in the maldistribution of fluid, rate of flow of fluid in the finned tube of rear portion is declined, therefore to the pressure of the fluid in guarantee upper header remains unchanged, the present invention devises so that in upper header 1, the circulation area of fluid is gradually reduced along fluid flow direction, so can so that the flow velocity of the fluid entered in finned tube keep as far as possible big, especially the finned tube of fluid flow downstream it is positioned at, thus augmentation of heat transfer.
As a preferred embodiment, as shown in Figure 5, the inside of upper header 1 arranges deflector 20, described deflector 20 is inclined, extend to the bottom of upper header 1 from the top of upper header 1 so that the fluid flow area of upper header starts to gradually decrease from heat exchanger entrance pipe 18, so can ensure that upper collecting chamber keeps concordance along the pressure on fluid flow direction, the big of maintenance so that the flow velocity of the fluid in entrance finned tube is tried one's best, thus augmentation of heat transfer.
Flow deflector 20 is connected with two, the left and right wall of upper header, and wherein in left wall face, the position that heat exchanger entrance pipe 18 is connected with upper header 1, deflector 20 is positioned at the top of inlet tube and heat collector junction.
As an embodiment that can substitute for, flow deflector can be cancelled, directly the top wall 21 of upper header 1 is set to skewed, as shown in Figure 6, extend from the position of inlet tube towards the lower tilt of upper header 1, so that in upper header 1, along the flow direction of fluid, fluid flow area starts to gradually decrease from heat exchanger entrance pipe 18.
The top of upper header can be straight tabular, it is also possible to is arcuate structure.
As another embodiment, as it is shown in fig. 7, described heat exchanger 17 can be electric heating heat exchanger.
The base tube at Fig. 7 heat exchanger both ends only arranges the fin of inner side, for outside, it is not provided with fin, main cause is to make full use of heat-dissipating space because inner side arrange fin can so that forming suction channel between the fin of adjacent finned tube, for the fin in outside, suction channel cannot be formed, therefore outside fin is deleted and can save space, space is fully left inner side fin for, it is possible to augmentation of heat transfer simultaneously.This feature can equally be well applied to embodiment above.
The upper header 1 of heat exchanger, lower collector pipe 3 and finned tube 4 constitute the passage of fluid circulation.Being provided with vacuum-pumping tube 22 on upper header, vacuum pump passes through vacuum orifice pipe 22, is evacuated by the inner chamber of upper header 1, lower collector pipe 3 and finned tube 4, then passes through vacuum-pumping tube 22 and pour into appropriate superconducting fluid, and superconducting fluid is finally flowed in lower collector pipe 3.After the injection rate of superconducting fluid reaches normal capacity, then vacuum-pumping tube 22 is sealed.
As superconducting fluid atomization when 50 DEG C-60 DEG C of heat transfer medium, its heat conduction is fast, energy-conservation, safety, and superconducting fluid itself is nontoxic, tasteless, atomization at the pipeline closed, repeats itself, do not need to use pipeline to circulate.Superconducting fluid is little to the sidewall operating pressure of finned tube, and non-corrosiveness, "dead", has reached long service life, the purpose of safe handling.
Lower collector pipe 3 arranges heating rod 25, and temperature controller 23 is set at the one end of lower collector pipe 3, for controlling the temperature of heat exchanger.During use, plugging in, the button on twisting temperature controller 23, to suitable temperature, heating rod 25 electrified regulation, superconducting fluid rapid atomization under vacuum conditions after being heated, riddles each finned tube, upper lower collector pipe, reaches the purpose of Fast Persistence heating.When reaching the temperature that temperature controller 23 is arranged, temperature controller controls heating rod and stops heating, and when the temperature arranged lower than temperature controller 23, temperature controller 23 controls heating rod and is heated.
The outside of heating rod 25 arranges fin 24, is used for increasing heat exchange area, augmentation of heat transfer.
Certainly, as replacement, the heat exchanging fluid in heat exchanger could be arranged to water, makes water atomization when 50 DEG C-60 DEG C by evacuation, it is prevented that because the temperature of water is too high, cause that heat exchanger outer wall is too warm.
In order to reach better heating effect, it is possible to arrange control system, automatically control the heating power of heating rod 25 according to indoor temperature.Described control system includes: temperature sensor and central controller, and described temperature sensor is used for measuring indoor temperature, and central controller adjusts heating power automatically according to the numerical value of indoor temperature.Detailed description of the invention is as follows:
When indoor temperature is lower than the first temperature, heating rod 25 is heated with the first power, when indoor temperature reaches the first temperature, central controller heating rod 25 is heated with the second power less than the first power, when indoor temperature reaches the second temperature being higher than the first temperature, central controller controls heating rod 25 is heated with the 3rd power less than the second power, when indoor temperature reaches three temperature being higher than the second temperature, central controller controls heating rod 25 is heated with the 4th power less than the 3rd power, when indoor temperature reaches four temperature being higher than the 3rd temperature, central controller controls heating rod 25 is heated with the 5th power less than the 4th power；When indoor temperature reaches five temperature being higher than the 4th temperature, control heating rod 25 is stopped heating by central controller.
For detailed description of the invention content described above, for instance the material of finned tube, coating, can equally be well applied to the embodiment of Fig. 7.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (5)
1. an anticorrosive radiator, including the finned tube of upper header, lower collector pipe and connection upper header and lower collector pipe, lower collector pipe arranges heating rod；Inside the pipe of the base tube of described finned tube, anticorrosive coat is set；
Described anticorrosive coat is to be generated by coating anticorrosive paint, and anticorrosive paint mass percent is composed as follows: zinc flake is 8.3%, and aluminium oxide is 8%, boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus；
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating；
Described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose；Tributyl phosphate selected by described defoamer；
Described finned tube includes circular base tube and the first fin, the second fin, the extended line of outside and the first fin and the second fin that the first fin and the second fin are arranged on base tube intersects at the central axis of the base tube at the place, the center of circle of base tube, the first fin and the second fin along by the first plane specular of the central axis of base tube；Described finned tube includes the 3rd fin and the 4th fin, described 3rd fin, the 4th fin along the second plane respectively with the first fin and the second fin specular, described second plane vertical with the first plane and also through the central axis of base tube；Arranging a connecting piece between described first fin and the second fin, arrange the second connection sheet between described 3rd fin and the 4th fin, it is straight linear metallic plate that a connecting piece and second connects sheet；Second fin of the first fin, the 3rd fin and adjacent fins pipe and the 4th fin form space；Described base tube is straight tube, and the central axis of described adjacent base tube is parallel to each other；
Angle between described first fin and the second fin is A, and the length of the first fin and the second fin is L, and the outer radius of base tube is R, is H along base tube fin height axially, meets equation below:
Sin(A/2)=a×(L/R)2+b×(L/R)+c
H/R=10×e×(Sin(A/2))f
Wherein, A unit is angle, 60 ° < A < 110 °,
L be of a size of mm, 15mm < L < 80mm,
The unit of R be mm, 10mm < R < 80mm,
The unit of H be mm, 600mm < H < 1200mm,
A, b, c, e, f are coefficient, and the scope ranging for 0.72-0.78, f ranging for 0.34-0.35, e ranging for 0.26-0.27, c ranging for 0.038-0.04, b of a is between-3.6 to-3.5.
2. radiator according to claim 1, it is characterised in that the inwall of base tube arranges fin, the height of described fin is gradually increased on the direction flowed along with fluid, and the highest fin height is minimum 1.05-1.1 times.
3. radiator according to claim 1, it is characterized in that, the inside of upper header arranges deflector, and described deflector is inclined, the bottom of upper header is extended to so that the fluid flow area of upper header starts to gradually decrease from radiator inlet pipe from the top of upper header.
4. radiator according to claim 1, it is characterised in that the base tube at radiator both ends only arranges the fin of inner side, for outside, it does not have arrange fin.
5. radiator according to claim 2, it is characterised in that the superconducting fluid in radiator is set to water, makes water atomization when 50 DEG C-60 DEG C by evacuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116369.3A CN104713154B (en) | 2013-10-16 | 2013-10-16 | It is coated with the anticorrosive radiator of special anti-corrosion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116369.3A CN104713154B (en) | 2013-10-16 | 2013-10-16 | It is coated with the anticorrosive radiator of special anti-corrosion layer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310483134.9A Division CN103591633B (en) | 2013-10-16 | 2013-10-16 | Electric-heating heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104713154A CN104713154A (en) | 2015-06-17 |
| CN104713154B true CN104713154B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510116369.3A Expired - Fee Related CN104713154B (en) | 2013-10-16 | 2013-10-16 | It is coated with the anticorrosive radiator of special anti-corrosion layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105526810A (en) * | 2016-01-26 | 2016-04-27 | 朱成恩 | Radiator and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370375Y (en) * | 1999-05-07 | 2000-03-22 | 田海金 | Multiple heat source starting radiator |
| CN2478063Y (en) * | 2001-01-06 | 2002-02-20 | 营口港信铝材有限公司 | Fin hollowed aluminium alloy energy saving radiator |
| CN1448662A (en) * | 2002-03-29 | 2003-10-15 | 陈烈涛 | Flue duct heat pipe evaporator and separated heat pipe system therefor |
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| CN104713154A (en) | 2015-06-17 |
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