CN102353105A - Atomizing wheel for high-efficiency ultra-fine diameter fog drops - Google Patents

Abstract

The invention discloses an atomizing wheel. The atomizing wheel is used in a water spray chamber of a high-speed direct evaporative cooling air conditioner, and is used for continuously and regularly changing a large amount of cold (hot) refrigerant water into a plurality of water films which have the thickness of less than 0.006 mm and are in a 360-degree parabolic shape, and crushing the water films into myriad ultra-fine diameter fog drops with the diameter of less than 0.02 to 0.100 mm by a high-speed air flow to form a water fog flow. When arranged on a shaft rotating at a high speed or an impeller shaft, which rotates at a high speed, of an axial-flow or diagonal fan, the atomizing wheel can be used as a high-efficiency direct evaporative cooling atomizing device or atomizing fan. Compared with the atomizing fan with the conventional structure, the atomizing wheel has the advantages that: water does not pass through impeller blades, but the water flow rate is high, the transferred cold (hot) energy is large, the water-air ratio is low, the current consumption is low, the temperature difference between inlet water and outlet water is more than or equal to 8 DEG C when the water amount is large, the heat and moisture exchange efficiency is high, flow path of a jet flow of the fog drops is long and the jet range is short; therefore, the atomizing wheel is a high-efficiency and high-speed direct evaporative cooling air conditioner which has high technical performance, is originally created by China, and can replace atomizing fans with conventional structures at home and abroad.

Description

A kind of atomizing wheel of efficient ultra-fine diameter droplet

One, the scope of present technique use

The present invention be in a kind of spray chamber that is used for Evaporative Cooling Air Conditioning at a high speed directly cold (heat) matchmaker hydrologic(al) budget ground become multilayer＜0.006mm thick as thin as a wafer moisture film and be 360 ° of parabolic shapes are ground into the ultra-fine diameter droplet spray stream of countless diameter＜0.02mm～0.08mm by high velocity air atomizing wheel.Be installed on the impeller shaft of axle or axial flow, diagonal flow fan of at a high speed rotation, can become direct transpiration-cooled sprayer unit of high speed or mist-spraying cooling fan.Compare with the traditional structure mist-spraying cooling fan; The water yield of atomizing is big; Cold (heat) amount of carrying is big; WGR is little, and current drain is little, the Inlet and outlet water temperature difference >=8 ℃ during big yield; Droplet surface area sum total is much higher than the traditional spray blower fan; So efficiency of damp and hot exchanging is high, and causing sprayer unit or mist-spraying cooling fan droplet jet flow path is big and range is short, is that technical performance is advanced and by the direct vaporizing and cooling air conditioning device of efficient high-speed that can replace present domestic and international traditional structure mist-spraying cooling fan of China's original creation.

Two, domestic and international technology status at present

The traditional structure at home and abroad axial fan spray atomization mechanism is: cold (hot) water through the inlet pipe into the medium mounted on the impeller hub and subsequent high-speed rotating storage units, in the role of the centrifugal force and pressure, water through the wheel spokes evenly distributed through-hole board inflow parcels between plate and retaining plate flow channel Coanda effect of the fluid, forming a thick curtain of water along the retaining plate rotation Ministry flow quickly to the surrounding edge, block Like water tray serving dish like pleats from the edge, due to centrifugal force, the rotating curtain of water under the pressure of the fan air flow toward the blade and a more balanced distribution of a water film on the blade, while most of the water film flow along direction of the rapid flow of the blade edge, from the leaves, the strong flow of the water film will have become thinner crushed into smaller droplet diameter for direct evaporative cooling, in conjunction with an air flow of heat and moisture exchange process completed; small portion of the water membrane rapidly due to centrifugal flow using the top portion of the blade between the shell blower tube together into a circular ring of water, although the water gate from the sparse condensate drain outward, but the leaves turn caused great resistance.

The point that falls behind of traditional structure spray axial fan is: 1, because the blade total length is limited; Limited by the centrifugal force and the strength of materials; Rotating speed be the slow-speed of revolution (＜1000r/min), add that the unit output is bigger, so the water film thickness that blade forms reach 0.02～0.10mm thick more than.Moisture film is thicker, causes fogdrop diameter bigger, and its droplet sum reduces relatively, and droplet surface area sum total nature reduces, and adds that air velocity is relatively low, so efficiency of damp and hot exchanging is not high.2; Because all the water yield is passed through from blade; And blade and air-flow all there is certain impulsive force from the water curtain that water retaining disk throws away; Diameter is bigger after forming droplet; Also can increase the weight in wet base of unit volume air; The demand motive force that air-flow advances increases naturally; Centrifugal action particularly; The moisture film of considerable part converges to blade tip and blower fan barrel shell place (promptly dredge and coagulate boom plate place) on the blade; Form very thick water ring; Not only can not atomize, and because the damping action of water ring, the impeller power consumption is very big; The ability loss-rate that the water yield that causes atomizing takies increases in full machine total energy consumption, so traditional structure mist-spraying cooling fan energy consumption is high.3; Because large-scale axial flow mist-spraying cooling fan spraying spray range is all more than 25m; Max-flow square diameter is more than φ 3.5m; But maximum gauge stream square occurs in the 15m place; The conventional air-conditioning spray chamber of tradition only has 3.9～5m long; Therefore; Droplet also has little time to mix fully with air stream and carries out that heat is wet to be exchanged in the spray; Promptly be installed in the water fender blocking-up of spray chamber rear portion cohesion spray stream and fall into the pond; Therefore actual traditional structure mist-spraying cooling fan efficiency of damp and hot exchanging is unsatisfactory; Use in the spray chamber and combined air conditioner unit of traditional structure mist-spraying cooling fan both at home and abroad; All must refill a cover in addition and contain the spray comb; The centrifugal spray water nozzle; More powerful water pump; As the cooling in summer indispensable additional measure of drying; Also be to adopt the traditional air conditioning chamber and the combined air conditioner unit installed power of this type blower fan big; Water consumption is big; WGR is high; Efficiency of damp and hot exchanging is low, the fundamental drawback that energy consumption is high.

Three, know-why of the present invention

The object of the invention: on axle by efficient ultra-fine diameter droplet atomizing wheel directly being sleeved at a high speed rotation or axial flow, the diagonal flow fan impeller shaft; Water inlet pipe (4) through being installed on the support (3) stretches in the hole of wheel cap cover (5); Cold (heat) matchmaker water is injected in the axle sleeve (1) of rotation at a high speed; Pass the slotted eye on the axle sleeve (1) and be sleeved on some outer circumferential edge pleats on the axle sleeve (1) and play that the aperture on the circle stretchable holes tube balancedly is mapped on the plate face of some atomizing pieces (2) in the atomizing piece (2) of certain angle such as dish dish; Because the wall attachment effect and the centrifugal action of fluid; The current that get into balancedly form gradually rapidly, and the moisture film of attenuate spreads apart to circumferential edge; Up to breaking away from atomizing piece (2); The certain angle that pleat rises along the atomizing piece plane; With axle sleeve (1) be the center of circle to around be 360 ° of parabolic shapes and be dispersed to the space forward and further pulverize the multi-level superfine spray stream that becomes countless fogdrop diameters ＜ 0.02～0.08mm by the thick moisture film of high velocity air general ＜ 0.006mm, to obtain the efficiency of damp and hot exchanging that the traditional structure mist-spraying cooling fan can't be reached.

Theory according to relevant efficiency of damp and hot exchanging in the thermodynamics; Reduce the water droplets equivalent diameter; Improve droplet surface area sum; Along with the raising of air velocity, the Reynolds number of air increases, and the vortex of air-flow and turbulence mobility are strengthened; Air---water two-phase medium interface contact probability increases; Make and conduct heat and the mass transfer enhancing that the convection heat transfer' heat-transfer by convection quality improves on the unit interval area, thereby efficiency of damp and hot exchanging is improved.Structure of the present invention and atomizing principles meet above thermodynamics basic theories and the directly requirement of evaporation cooling technique at a high speed; All shortcomings of traditional structure mist-spraying cooling fan have been overcome again, so be that technical performance is advanced and by the direct Evaporative Cooling Air Conditioning new equipment of efficient high-speed that can replace present domestic and international traditional structure mist-spraying cooling fan of China's original creation.

Four, structure accompanying drawing of the present invention

Product structure of the present invention and contrast product structure see accompanying drawing for details: accompanying drawing 1 is efficient ultra-fine diameter droplet atomizing wheel cutaway view; Fig. 2 is at present domestic and international traditional structure spray axial fan cutaway view.

Five, frame mode of the present invention and process and characteristics

Efficient ultra-fine diameter droplet atomizing wheel mainly screw thread is arranged by an end cylindrical and have that the axle sleeve (1) of several slotted eyes, some outer circumferential edge pleats play certain angle such as dish dish and at the atomizing piece (2) that has aperture on the interior round stretchable holes tube, be installed in water inlet pipe (4) and spinning on the support (3) and form and be sleeved at the wheel cap cover (5) on axle sleeve (1) the water inlet end thread on axle or axial flow, the diagonal flow fan impeller shaft of rotation at a high speed and use.Its working forms (process) is that cold (heat) matchmaker water passes through in the axle sleeve (1) of the hole injection high speed rotation of spinning on axle sleeve (1) water inlet end wheel upper shield (5) continuously through water inlet pipe (4); Pass through several slotted eyes on the axle sleeve (1) again and be sleeved on some outer circumferential edge pleats on the axle sleeve (1) and play that the aperture on the circle stretchable holes tube balancedly is mapped on the plate face of some atomizing pieces (2) in the atomizing piece (2) of certain angle such as dish dish; Because the wall attachment effect and the centrifugal action of fluid; The current that get into balancedly form gradually rapidly, and the moisture film of attenuate spreads apart to circumferential edge; Up to breaking away from atomizing piece (2) along certain angle; Make high velocity air can will be along some atomizing pieces (2) edge the thick moisture film of multilayer 0.006mm that spreads forward of 360 ° of parabolic shapes be ground into the multi-level spray stream that comprises numerous ultra-fine diameter droplet rapidly; Make the high velocity air that contains hot and humid or low temperature and low humidity carry out some levels tempestuously with the ultra-fine droplet in the spray stream; Directly evaporative cooling and the wet exchange of efficient heat at a high speed completely; Catch trifle in the world contained in the air draught simultaneously; Remove unnecessary heat and steam, thereby reach pure air; Indoor environment is lowered the temperature or heated up; Wholesomeness such as dehumidification or humidification; Comfortableness; Manufacturability is regulated the also purpose of energy-saving and water-saving.

Cold (heat) matchmaker water that the present invention uses no matter separate unit or many parallel connections uses, and no longer passes through matching used draught fan impeller inside and blade surface.So the injected water volume size is little to impeller and energy consumption of electrical machinery influence, thereby the electrical machine energy-saving effect is obvious.

The present invention both can separate unit be sleeved on the impeller shaft of axle or axial flow, diagonal flow fan of rotation at a high speed and used, again can with some axial flows, diagonal flow fan and the axle combination parallelly connected use in back of rotation at a high speed.

Claims (3)

1. the atomizing wheel of an efficient ultra-fine diameter droplet is used at a high speed directly evaporative cooling and the wet exchange of heat; Catch in the air draught contained trifle in the world simultaneously and remove unnecessary heat and steam, reach pure air, indoor environment is lowered the temperature or wholesomenesses such as intensification, dehumidification or humidification, comfortableness, manufacturability are regulated the purpose of energy-saving and water-saving simultaneously.Having one or several water inlet pipes (4) that are installed on the support (3) injects cold (heat) matchmaker water in the axle sleeve (1) of rotation at a high speed by the hole of spinning on the wheel upper shield (5) of axle sleeve (1) water inlet end continuously; Pass through several slotted eyes on the axle sleeve (1) again and be sleeved on the aperture that pleat on the some outer circumferential edge on the axle sleeve (1) rises on the interior circular hole tube of atomizing piece (2) of certain angle such as dish dish and balancedly be mapped on the plate face of atomizing piece (2); Because the wall attachment effect and the centrifugal action of fluid; The current that get into balancedly form gradually rapidly, and the moisture film of attenuate spreads apart to circumferential periphery; Up to breaking away from atomizing piece (2); Make high velocity air can will be along some atomizing pieces (2) edge the thick moisture film in multilayer ＜ 0.006 that spreads forward of 360 ° of parabolic shapes be ground into the multi-level spray stream that comprises numerous ultra-fine diameter droplet rapidly; Make the high velocity air that contains hot and humid or low temperature and low humidity can carry out with the ultra-fine droplet in the spray stream some levels tempestuously, at a high speed directly evaporative cooling and the wet exchange of efficient heat completely, its used cold (heat) matchmaker water no matter separate unit or many parallel connections uses completely without must be through the impeller blade surface of axial flow, diagonal flow fan.

2. the atomizing wheel of an efficient ultra-fine diameter droplet as claimed in claim 1 is characterized in that: cold (heat) matchmaker water that this device uses no longer passes through matching used fan impeller blade surface.

3. the atomizing wheel of an efficient ultra-fine diameter droplet as claimed in claim 1; It is characterized in that: but this device both separate unit be sleeved on the impeller shaft of axle or axial flow, diagonal flow fan of at a high speed rotation and use, again can with some axial flows, diagonal flow fan and the axle combination parallelly connected use in back of rotation at a high speed.

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