Background technology
At present, room air pollution has become harm humans health " stealthy killer ".Research shows, the degree of room air pollution than the serious 2-5 of outdoor air doubly, can reach surprising 100 times under special circumstances.Expert detects discovery, has more than 500 kind of volatile organic matter in room air, and wherein carcinogenic substance just has kind more than 20, the virus of curing the disease kind more than 200.A large amount of startling facts confirmations, room air pollution has become " the stealthy killer " of harm humans health.According to statistics, the people of the nearly half in the whole world is in room air pollution, and indoor environmental pollution has caused 35.7% breathing problem, 22% chronic lung disease and 15% tracheitis, bronchitis and lung cancer.The data that provide according to Chinese indoor environment monitoring center, the death toll that exceeds the quata that China causes due to room air pollution every year reaches 11.1 ten thousand people, and the outpatient service number that exceeds the quata can reach 4,300,000 person-times.Serious indoor environmental pollution not only causes damage to health of people, and has caused huge economic loss, and only the economic loss that causes because of this respect of China is just up to 10,700,000,000 dollars nineteen ninety-five.
Point out according to " IAQ standard ", everyone has 30m by need per hour
3fresh air.And the time of the normal about 80-90% of common people is spent indoor.Along with the raising of material, economic level, air-conditioning has entered huge numbers of families.In air conditioner air after treatment, anion extremely lacks, and that anion is human body is requisite.Air in air-conditioned room is Reusability, and in room, the concentration of carbon dioxide can progressively raise, and causes environmental hypoxia, stuffy, and pathogen easily grows breeding.
In view of the severe air pollution problem inside rooms occurring, existing air clearing product can not solve severe indoor pollution problem from basic solution.Existing product is all air clearing product mostly, this series products can only clean room in original air, but can not be from the new air of outdoor introducing, so cannot fundamentally solve the situation of room air pollution.The best approach that solves indoor pollution problem be exactly the outdoor air exchange of carrying out of indoor introducing to improve IAQ, this is just starved of aeration device.
And the fin position of existing heat exchanger is continuous and continual, for the new blower fan of continuous fin heat pipe heat exchange element, heat exchange efficiency reduces along with reducing of the temperature difference, so in porch heat exchange efficiency maximum.The heat exchange efficiency of heat exchange element can reduce like this, and heat transfer effect is bad.
Utility model content
According to above-mentioned weak point, it is high that the purpose of this utility model is to provide a kind of heat exchange efficiency, the new blower fan of discontinuous fin separate heat pipe of good effect of heat exchange.
For achieving the above object, the technical solution of the utility model is: the new blower fan of a kind of discontinuous fin separate heat pipe, it comprises condenser and evaporimeter, condenser is positioned at evaporimeter top, the upper end of condenser is connected by vapor uptake with upper end of evaporator, the lower end of condenser is connected by condensate descending with the lower end of evaporimeter, the new wind air outlet of the exhaust outlet of condenser and evaporimeter is equipped with axial flow blower, the fin of condenser and evaporimeter is the staggered two parts in left and right, between two parts fin, pass through moulding by casting, and be welded into heat pipe monomer by aluminium flake, wherein, the more part of fin number is arranged at a side of air intake.
Preferably: described new wind air outlet place is provided with air processor.
Preferably: described air processor comprises be arranged side by side two independently air-treatment layers, and one of them air-treatment layer is provided with except wet granular, and another air-treatment layer is provided with purification particle.
Preferably: described air-treatment layer is made up of some little cylinder moulds, wherein, the minimum square hole catercorner length of the grid of little cylinder mould is less than the diameter of corresponding particle.
Preferably: the outside of two described air-treatment layers is provided with draw and insert-type lid end.
The beneficial effects of the utility model are: by the two-part structure that fin design is become to be crisscross arranged, can produce in fin staggered place the disorderly of wind and slow down wind speed, increase on the one hand turbulent heat transfer intensity, thereby enhanced heat exchange, finally make whole heat exchange element in not increasing metal consumption and heat exchange area, obtain better heat transfer effect; Thereby reduce on the other hand wind speed and increase heat-exchange time, therefore increased the heat exchange efficiency of air and working medium.The draw and insert-type air processor of settling at new wind air outlet, air processor comprises dehumidifying and two functions that purify air.The design of draw and insert-type can complete simply and easily the replacing of air processor and clean.Air-treatment can obviously reduce air humidity and purify air, and the lifting of IAQ is had to remarkable result.Especially in the winter time, the evaporator section of indoor hot air can being flowed through, the outdoor cold wind condensation segment of flowing through upgrades and improves room air in the situation that not changing indoor temperature.
The specific embodiment
The new blower fan of the discontinuous fin separate heat pipe of one as shown in Fig. 1-6, it comprises condenser 1 and evaporimeter 2, condenser 1 is positioned at evaporimeter 2 tops, the upper end of condenser 1 is connected by vapor uptake 3 with the upper end of evaporimeter 2, the lower end of condenser 1 is connected by condensate descending 4 with the lower end of evaporimeter 2, the new wind air outlet 7 of the exhaust outlet 6 of condenser 1 and evaporimeter 2 is equipped with axial flow blower 5, the fin 10 of condenser 1 and evaporimeter 2 is the staggered two parts in left and right, two parts fin 10 passes through moulding by casting, and is welded into heat pipe monomer by aluminium flake.Wherein, the more part of fin number is arranged at a side of air intake.Preferably, the staggered degree of two parts fin is 1/2nd positions that a part of fin is positioned at adjacent two spacings of fin of another part.Fin is crisscross arranged, and produces the disorderly of wind and slowed down wind speed in staggered place, increases on the one hand turbulent heat transfer intensity; Thereby reduce on the other hand wind speed and increase heat-exchange time, therefore increased the heat exchange efficiency of air and working medium.New wind air outlet 7 places are provided with air processor 11, and air processor 11 comprises two air-treatment layers 9 that are arranged side by side, and one of them air-treatment layer is provided with except wet granular, and another air-treatment layer is provided with purification particle.Air-treatment layer 9 is made up of some little cylinder moulds, and wherein, the minimum square hole catercorner length of the grid of little cylinder mould is less than the diameter of corresponding particle.Wherein, except wet granular is silica gel particle, the moist gas in can absorbed air, especially highlights its effect for plum rain season.Purification particle is bamboo charcoal particle, the harmful substance such as formaldehyde, sulfur dioxide in can absorbed air, and can discharge natural mineral matter, and can also damping antibacterial, deodorizing fungus-proof, purifies air.The both sides of two air-treatment layers are provided with draw and insert-type lid end 8, are convenient to dismounting to carry out the replacing of air-treatment material.
Complete equipment is made up of aluminium, heat pipe discontinuous fin used be mould fill form, be an entirety, switching performance is good, therefore heat exchange thermal resistance is little, heat exchange property is good, can alleviate the weight of equipment.In the middle of two-part fin heat pipe system, welded by aluminum strip.Because aluminium can generate incoagulable gas--hydrogen with water reaction, therefore the utility model material all passes through oxidation processes.The many factors such as applicability and stability of having considered phase-change heat-exchange ability, working medium, working medium is defined as distilled water.
Its intervening portion computing formula of the fin of evaporimeter and condenser is
wherein, y is the distance of air intake porch to fin staggered place, m; D is the width between two fins, m; Δ p is pressure differential, Pa; α is thermal diffusivity, m
2/ s; μ is dynamic viscosity, Pas.
The utility model also provides the preparation method of the new blower fan of a kind of separate heat pipe, and its operating procedure is as follows: 1, the material of making heat pipe is all done to oxidation processes; 2, clean and make heat pipe material requested, thoroughly remove surperficial solid particle, oil stain and oxide; 3, by each material welding; 4, monomer heat pipe is hunted leak; 5, monomer heat pipe is connected into hot-pipe system, carry out system leak detection; 6, heat pipe vacuumizes, and does pressure and keeps experiment; 7, be filled with working medium.
The manufacturing process of heat pipe should be noted that it is compatibility and the maintenance of heat pipe pressure of working medium and tube body of heat pipe.In order to guarantee that tube body of heat pipe does not react with working medium, heat pipe is made material used and has all been done oxidation processes, and opposite heat tube will be managed inside and outside oven dry by vapours after cleaning again after welding, and the sealing of preferably 300K constant temp. drying box, and paper using, prevents inner residual welding thing.
Evaporating temperature >=30 ℃ of heat pipe model machine work, condensation temperature≤27 ℃, the minimum work temperature difference of heat pipe is 3 ℃, how to guarantee that heat pipe can evaporate under the temperature conditions of >=30 ℃ and is the key of prototype fabrication the temperature condensation of≤27 ℃.Wherein topmost is exactly to guarantee that heat pipe intraductal pressure keeps the pressure of designing requirement.Evaporating temperature is lower, and the required vacuum of inside heat pipe is higher.Table look-up to such an extent that water is 0.04865 × 10 at 30 ℃ of required pressure of evaporation
5pa is 0.0423 × 10 at 27 ℃ of required pressure of evaporation
5pa, heat pipe evaporating pressure need remain on 0.0423 × 10
5pa-0.04865 × 10
5pa.
In heat pipe manufacturing process, need to do for twice pressurization leak detection work:
1, the leak detection of monomer heat pipe: its method is the heat pipe monomer metallic plate after welding to be clamped to also machinery fix, and puts into water, connects the adapter of heat pipe one end with pressuring machine, and the other end is taken over good seal, then pressurizes and is no more than 2 times of heat pipe pressure-bearing; If there is bubble to produce in water, represent that welded seal is bad, to emitting bubble place to mark, and with the sealing of the encapsulant such as silica gel; If there is no Bubble formation, represent that heat pipe is air tight.Wherein, water temperature is 20-25 ℃.
2, the leak detection of hot-pipe system: its method, for taking over and house steward tightly welds each heat pipe, connects three-dimensional joint on condenser, one end with vacuumize adapter and be connected, vacuumize adapter and be connected with a vacuum valve, a termination vacuum meter on valve, another termination vavuum pump; The upper connecting tube of evaporimeter also connects vacuum meter; Total tube connector encases with heat insulation layer, and system connects takes out required vacuum afterwards with vavuum pump, screws immediately vacuum valve valve, within every 5 hours, observes vacuum meter reading; If more than 36 hours keep pressure constant, represent air tight; Otherwise, represent gas leakage, repeat hot-pipe system leak detection experiment.
Illustrate as an example of a new blower fan of discontinuous fin separate heat pipe example.
Air is under an atmospheric pressure, and setting indoor air temperature is 24 ℃, and now corresponding air thermal diffusion coefficient is 2.18 × 10
-5m
2/ s, dynamic viscosity is 1.8437 × 10
-5pas; Outside air temperature is 32 ℃, and now corresponding air thermal diffusion coefficient is 2.289 × 10
-5m
2/ s, dynamic viscosity is 1.8829 × 10
-5pas.Between evaporimeter and the fin of condenser, width is identical, is 2.26 × 10
-3m, it is 100m that length is 0.39m axial flow blower flow
3/ h, corresponding pressure is poor is 8Pa.Due to air physical property difference corresponding to different temperatures, so the intervening portion of evaporimeter and condenser is not identical, calculate by formula, condenser intervening portion y is 0.097m; And evaporimeter intervening portion y is 0.093m.
Heat recovery efficiency ε formula is:
In formula, q
actactual heat exchange amount, q
maxmaximum heat exchange amount, T
einfor evaporator temperature, T
eoutfor evaporator outlet temperature, T
outfor air outdoor temperature, T
infor air indoor temperature.Heat recovery efficiency equals the ratio of actual heat exchange amount and maximum heat exchange amount, because the flow of air is identical with specific heat capacity, so the ratio of actual heat exchange amount and maximum heat exchange amount equals the ratio of the evaporator inlet-outlet temperature difference and indoor/outdoor temperature-difference.Above-mentioned new blower fan keeps 24 ℃ of indoor temperatures in experimentation, 32 ℃ of outdoor temperatures, and its evaporimeter intervening portion is 0.093m, and condenser intervening portion is 0.097m, and heat pipe liquid filled ratio is 40%.Obtaining the evaporator inlet-outlet temperature difference by temperature sensor is 6.6 ℃, and indoor/outdoor temperature-difference is 8 ℃, and obtaining the now heat recovery efficiency of the new blower fan of discontinuous fin separate heat pipe by heat recovery efficiency formula is 82.5%.The heat recovery rate of the new blower fan of this discontinuous fin separate heat pipe is high.