Low Latency Streaming: Choosing A Platform To Live Stream Without Delay

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Primary Examiner: Hopkins; Robert AClaimsThe invention claimed is:1. A humid air stream generator, comprising a hollow cylindricalchamber with a mist generator placed inside at the bottom of thehollow cylindrical chamber for generating a continuous stream ofhumid air, an inlet tubing attached to the hollow cylindricalchamber for feeding a stream of incoming air, an outlet tubingattached to the hollow cylindrical chamber, a suction fan placedbetween the outlet tubing and the mist generator for forming thecontinuous stream of humid air with the stream of incoming air intoa cyclonic air flow which spiral upward towards the outlet tubing,so as to eliminate accumulation of water droplets or condensationat an outlet region of the hollow cylindrical chamber; the suctionfan is a centrifugal fan to allow the continuous stream of humidair and the stream of incoming air to pass through the centrifugalfan, so as to mix them together in forming the cyclonic air flow;wherein, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and a tilted taper upper chamber attachedto the top of the vertical cylindrical lower chamber, the outlettubing is attached to the tilted taper upper chamber, and thesuction fan is placed in the vertical cylindrical lowerchamber.2. The humid air stream generator according to claim 1, wherein,the outlet tubing further comprising a curving tubing attached tothe tilted taper upper chamber and a nozzle mounted on the curvingtubing.3. The humid air stream generator according to claim 1, wherein,the hollow cylindrical chamber comprises a vertical cylindricallower chamber and an extended outlet flow channel branched out fromthe vertical cylindrical lower chamber, the outlet tubing isattached to the outlet flow channel, and the suction fan is placedin the outlet flow channel.4. The humid air stream generator according to claim 1, wherein,the hollow cylindrical chamber comprises a vertical cylindricalchamber.5. The humid air stream generator according to claim 4, wherein,the outlet tubing is attached to a point along the circumference ofthe vertical cylindrical chamber that is at least 75 degree awayfrom an air outlet of the centrifugal fan.6. The humid air stream generator according to claim 4, wherein,the hollow cylindrical chamber further comprises a main chamberconnected to the vertical cylindrical chamber.7. The humid air stream generator according to claim 1, wherein,the centrifugal fan is attached securely onto a circular plate witha centre hole on the circular plate.8. The humid air stream generator according to claim 1, wherein,the centrifugal fan comprises a drum housing with fins arranged atits middle point, wherein, the drum housing further comprises anair outlet which discharges mixed air in a direction in parallelwith or tilted at a small angle to a tangent of the drum housing atthe air outlet so as to form the cyclonic air flow along acircumference of an inner wall of the hollow cylindricalchamber.9. The humid air stream generator according to claim 8, wherein,the circular plate is attached securely onto an inner wall of thehollow cylindrical chamber, wherein the fins of the centrifugal fanis right above the centre hole of the circular plate.10. The humid air stream generator according to claim 9, wherein,the centrifugal fan is tilted to a horizontal axis at an angle from0 degree to 80 degree upwards or downwards from the horizontalaxis.11. The humid air stream generator according to claim 10, wherein,the cyclonic air flow comprises its flow angle increase as itspiral up, wherein, the flow angle increases from as low as 5degree up to a maximum of 80 degree as it spiral upwards until itreaches the extreme top of the hollow cylindrical chamber.12. The humid air stream generator according to claim 1, wherein,further comprising a heater located inside the hollow cylindricalchamber.13. A humid air stream generator, comprising a hollow cylindricalchamber with a mist generator placed inside at the bottom of thehollow cylindrical chamber for generating a continuous stream ofhumid air, an inlet tubing attached to the hollow cylindricalchamber for feeding a stream of incoming air, an outlet tubingattached to the hollow cylindrical chamber, a suction fan placedbetween the outlet tubing and the mist generator for forming thecontinuous stream of humid air with the stream of incoming air intoa cyclonic air flow which spiral upward towards the outlet tubing,so as to eliminate accumulation of water droplets or condensationat an outlet region of the hollow cylindrical chamber; the suctionfan is a centrifugal fan to allow the continuous stream of humidair and the stream of incoming air to pass through the centrifugalfan, so as to mix them together in forming the cyclonic air flow;wherein the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and a recessed roof top, wherein thecentrifugal fan is arranged outside the vertical cylindrical lowerchamber but at a step surface of the recessed roof top, the outlettubing is attached to the recessed roof top at a same level of thecentrifugal fan.14. The humid air stream generator according to claim 13, wherein,the centrifugal fan is arranged horizontally or vertically on thestep surface of the recessed roof top.15. The humid air stream generator according to claim 13, wherein,the recessed roof top have an arc-shaped structure connected to anair outlet of the centrifugal fan and a tangent structuretangentially connected to the arc-shaped structure, wherein theoutlet tubing can be attached to an opening of the tangentstructure.16. A humid air stream generator, comprising a hollow cylindricalchamber with a mist generator placed inside at the bottom of thehollow cylindrical chamber for generating a continuous stream ofhumid air, an inlet tubing attached to the hollow cylindricalchamber for feeding a stream of incoming air, an outlet tubingattached to the hollow cylindrical chamber, a suction fan placedbetween the outlet tubing and the mist generator for forming thecontinuous stream of humid air with the stream of incoming air intoa cyclonic air flow which spiral upward towards the outlet tubing,so as to eliminate accumulation of water droplets or condensationat an outlet region of the hollow cylindrical chamber; the suctionfan is a centrifugal fan to allow the continuous stream of humidair and the stream of incoming air to pass through the centrifugalfan, so as to mix them together in forming the cyclonic air flow;wherein the hollow cylindrical chamber comprises a verticalcylindrical lower chamber, a first recessed roof top and a secondrecessed roof top; wherein a first centrifugal fan is arrangedvertically outside the vertical cylindrical lower chamber but at astep surface of the first recessed roof top, a second centrifugalfan is arranged horizontally outside the first recessed roof topbut at a step surface of the second recessed roof top, or a firstcentrifugal fan is arranged horizontally outside the verticalcylindrical lower chamber but at a step surface of the firstrecessed roof top, a second centrifugal fan is arranged verticallyoutside the first recessed roof top but at a step surface of thesecond recessed roof top.DescriptionFIELD OF THE INVENTIONThe present invention relates to static charge reduction technique,and more specific, to a humid air stream generator.BACKGROUND OF THE INVENTIONIn static charge reduction technical field, a humid air streamgenerator is used to increase the humidity of the air for reducingstatic charge. In a known air stream controller, the humid airstream for static charge reduction after released from the outlettubing for use in static charge mitigation is channeled as areturned loop back into the humidifier chamber of the humid airstream generator for re-circulation to achieve better air flowcontrol for optimum output. This closed-loop system not only helpsto prevent or minimize the leakage of the humid air into thesurrounding ambient environment, it also cuts the wastage of humidair and contributes to an optimum amount of humid air to beproduced economically.FIG. 1 comprises shown a common known humid air stream generator 1having a main chamber attached with an inlet tubing 12 for feedingdry air and an outlet tubing 19 for outputting moist air. A mistgenerator 11 is arranged at the bottom of the chamber.However, during the running of the air stream controller at arelative humidity (RH) especially at above 80%, water condensationwas seen on the walls 14 of the chamber and on the inner walls ofthe outlet tubing 19 as illustrate in FIG. 1.These tiny droplets accumulate to form bigger drops 13 andsubsequently dripping down the walls 14 causing accumulation ofwater, especially inside the outlet tubing 19 causing unwantedtrapping and retention of water inside the tubing. This isundesirable in the management and control of humid air for staticcharge mitigation in the air flow control system.It is interesting to discover that putting a mini heater in the airflow path at the region above the mist generator 11 helps tominimize or eliminate such unwanted condensation especially at alevel above 80% RH. In fact, up to the 85% to 90% RH range, thereis no condensation being seen both at the walls of the outlet airflow region as well as at the inner circular wall of the aircirculation tube when the mini heater is switched on. The higherthe heater temperature, the lesser the condensation is seen on thewalls.However, careful analysis reveals that the heater not only involvesinstallation work, close monitoring, safety issue and additionalcost to the system, it also cause contamination issue after longperiod of uses due to the oxidation or corrosion, pre-matured wearand tear and dirt accumulation issues using such heater system.Therefore further research and development work is needed to searchfor a better and easier way to overcome such condensation problemwithout design pitfalls and shortcomings.SUMMARY OF THE INVENTIONThe objective of this invention is to provide a humid air streamgenerator which is better and easier to overcome such condensationproblem without design pitfalls and shortcomings.According to one aspect, a humid air stream generator is provided,which comprising a hollow cylindrical chamber with a mist generatorplaced inside at the bottom of the hollow cylindrical chamber forgenerating a continuous stream of humid air, an inlet tubingattached to the hollow cylindrical chamber for feeding a stream ofincoming air, an outlet tubing attached to the hollow cylindricalchamber, a suction fan placed between the outlet tubing and themist generator for forming the continuous stream of humid air withthe stream of incoming air into a cyclonic air flow which spiralupward towards the outlet tubing, so as to eliminate accumulationof water droplets or condensation at an outlet region of the hollowcylindrical chamber; the suction fan is a centrifugal fan to allowthe continuous stream of humid air and the stream of incoming airto pass through the centrifugal fan, so as to mix them together informing the cyclonic air flow.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and a tilted taper upper chamber attachedto the top of the vertical cylindrical lower chamber, the outlettubing is attached to the tilted taper upper chamber, and thesuction fan is placed in the vertical cylindrical lowerchamber.Optionally, the outlet tubing further comprising a curving tubingattached to the tilted taper upper chamber and a nozzle mounted onthe curving tubing.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and an extended outlet flow channelbranched out from the vertical cylindrical lower chamber, theoutlet tubing is attached to the outlet flow channel, and thesuction fan is placed in the outlet flow channel.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical chamber, and the cyclonic air flow in the verticalcylindrical chamber are spun for a distance of at least one quarterof a circumference of the vertical cylindrical chamber.Optionally, the outlet tubing is attached to a point along thecircumference of the vertical cylindrical chamber that is at least75 degree away from an air outlet of the centrifugal fan.Optionally, the hollow cylindrical chamber further comprises a mainchamber connected to the vertical cylindrical chamber.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and a recessed roof top, wherein thecentrifugal fan is arranged outside the vertical cylindrical lowerchamber but at a step surface of the recessed roof top, the outlettubing is attached to the recessed roof top at a same level of thecentrifugal fan.Optionally, the centrifugal fan is arranged horizontally orvertically on the step surface of the recessed roof top.Optionally, the recessed roof top have an arc-shaped structureconnected to an air outlet of the centrifugal fan and a tangentstructure tangentially connected to the arc-shaped structure,wherein the outlet tubing can be attached to an opening of thetangent structure.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber, a first recessed roof top and a secondrecessed roof top, wherein a first centrifugal fan is arrangedvertically outside the vertical cylindrical lower chamber but at astep surface of the first recessed roof top, a second centrifugalfan is arranged horizontally outside the first recessed roof topbut at a step surface of the second recessed roof top.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber, a first recessed roof top and a secondrecessed roof top, wherein a first centrifugal fan is arrangedhorizontally outside the vertical cylindrical lower chamber but ata step surface of the first recessed roof top, a second centrifugalfan is arranged vertically outside the first recessed roof top butat a step surface of the second recessed roof top.Optionally, the hollow cylindrical chamber comprises a verticalcylindrical lower chamber and a horizontal cylindrical upperchamber extended from the vertical cylindrical lower chamber, thecentrifugal fan is arranged in the hollow cylindrical chamber andthe horizontal cylindrical upper chamber, respectively, wherein theoutlet tubing is attached to the horizontal cylindrical upperchamber.Optionally, at least two centrifugal fans are attached horizontallyside-by-side next to each other in the horizontal cylindrical upperchamber.Optionally, the centrifugal fan is attached securely onto acircular plate with a centre hole on the circular plate.Optionally, the centrifugal fan comprises a drum housing with finsarranged at its middle point, wherein, the drum housing furthercomprises an air outlet which discharges mixed air in a directionin parallel with or tilted at a small angle to a tangent of thedrum housing at the air outlet so as to form the cyclonic air flowalong a circumference of an inner wall of the hollow cylindricalchamber.Optionally, the circular plate is attached securely onto an innerwall of the hollow cylindrical chamber, wherein the fins of thecentrifugal fan is right above the centre hole of the circularplate.Optionally, the centrifugal fan is tilted to a horizontal axis atan angle from 0 degree to 80 degree upwards or downwards from thehorizontal axis, preferred from 5 degree to 75 degree, morepreferred from 25 degree to 60 degree, most preferred from 35degree to 50 degree.Optionally, the cyclonic air flow comprises its flow angle increaseas it spiral up, wherein, the flow angle increases from as low as 5degree up to a maximum of 80 degree as it spiral upwards until itreaches the extreme top of the hollow cylindrical chamber.Optionally, the humid air stream generator further comprises aheater located inside the hollow cylindrical chamber.By arranging a suction fan in the hollow cylindrical chamber, thehumid air stream generator according to present applicationeffectively eliminates the unwanted water droplets or condensationformed at the inner wall of the hollow cylindrical chamber and theoutlet tubing without the use of a heater in a simple andunconventional methodology.BRIEF DESCRIPTION OF THE DRAWINGSSo as to further explain the invention, an exemplary embodiment ofthe present invention will be described with reference to the belowdrawings, wherein:FIG. 1 is a diagram of a common known humid air streamgenerator.FIG. 2 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 3 is a diagram of an angle between the outlet tubing and theair outlet of the centrifugal fan.FIG. 4 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 5 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 6 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 7 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 8 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 9 is a diagram of a humid air stream generator according to anembodiment of the present application.FIG. 10 is a diagram showing the centrifugal fan and circular plateof the humid air stream generator according to another embodimentof the present application.FIG. 11 is a diagram showing the centrifugal fan generates acircular air flow along the circumference of the inner wall of thehollow cylindrical chamber.FIG. 12 is a diagram showing a cross-section of the humid airstream generator according to a further embodiment of the presentapplication.FIG. 13 is a diagram showing air flow conditions that generate thespinning effect of the cyclonic air flow;FIG. 14 is a diagram of a humid air stream generator according toanother embodiment of the present application.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTThese and other advantage, aspect and novel features of the presentinvention, as well as details of an illustrated embodiment thereofwill be more fully understood from the following description anddrawings, while various embodiments of the present invention arepresented by way of examples only, not limitation. In the followingfigures, the arrowhead refers to the direction of the air flow.FIG. 2 is a diagram of a humid air stream generator according to anembodiment of the present application. As shown in FIG. 2, thehumid air stream generator comprises a hollow cylindrical chamber 2with a mist generator 21 placed inside at the bottom of the hollowcylindrical chamber 2 for generating a continuous stream of humidair, an inlet tubing 22 attached to the hollow cylindrical chamber2 for feeding a stream of incoming air, an outlet tubing 8 attachedto the hollow cylindrical chamber 2, a suction fan 4 placed betweenthe outlet tubing 8 and the mist generator 21 for forming thecontinuous stream of humid air and the stream of incoming air intoa cyclonic air flow which spiral upward towards the outlet tubing,surprisingly eliminates accumulation of water droplets orcondensation at an outlet region of the hollow cylindrical chamber2. The stream of incoming air can be returned air or ambient air.It dependents on actual requirements.As shown in FIG. 2, the suction fan 4 is a centrifugal fan that isattached securely onto a circular plate 3 with a centre hole 31 onthe circular plate 3 to allow the continuous stream of humid airand the stream of incoming air to pass through the centrifugal fan,so as to mix them together in forming the cyclonic air flow. Thehumid air produced by the mist generator 21 is being sucked andpassed through the suction fan 4 that is placed at a positionaround the centre region inside the hollow cylindrical chamber2.The centrifugal fan 4 can be any type on the market. Optionally,the centrifugal fan 4 can be arranged by itself at a positionaround the centre region inside the hollow cylindrical chamber 2independently, so the circular plate 3 can be omitted.In the present embodiment, the hollow cylindrical chamber 2 is avertical cylindrical chamber, the cyclonic air flow in the verticalcylindrical chamber are spun for a distance of at least one quarterof a circumference of the vertical cylindrical chamber. It is afurther surprise to discover that even a short spinning distance ofabout one quarter of the circumference of the vertical cylindricalchamber, the condensation problem on the inner wall lining of theoutlet tubing is gone.Such a short spin of humid airflow from the centrifugal fan ineliminating the condensation problem on the inner wall lining ofthe outlet tubing 8 is unanticipated and unexpected.In the present embodiment, the outlet tubing 8 is lowered down tothe same level as the centrifugal fan and positioned at a spotalong the circumference wall of the hollow cylindrical chamber 2.When look from the top view, the outlet tubing 8 is attached to apoint along the circumference of the hollow cylindrical chamber 2that is at least 75 degree away from the air outlet of thecentrifugal fan, as shown in FIG. 3. In another embodiment, theoutlet tubing 8 can be arranged at the top of the hollowcylindrical chamber 2. However, in other embodiment, outlet tubing8 can be arranged at other points of the hollow cylindrical chamber2.Optionally, a heater is added to the water bath inside the hollowcylindrical chamber 2 to control the ideal temperature forgenerating an optimum amount of water vapor. The optimum humid airoutput is achieved by varying the water bath temperatureaccordingly taking into consideration of the ambient temperatureenvironment and the speed of air inflow and outflow rate to achievethe optimum amount of water vapor generation for use in variousstatic charge mitigation objective.FIG. 4 is a diagram of a humid air stream generator according to anembodiment of the present application. As shown in FIG. 4, thehumid air stream generator comprises a hollow cylindrical chamber 2with a mist generator 21 placed inside at the bottom of the hollowcylindrical chamber 2 for generating a continuous stream of humidair, an inlet tubing 22 attached to the hollow cylindrical chamber2 for feeding a stream of incoming air, an outlet tubing (unshown)attached to the hollow cylindrical chamber 2, a suction fan 4placed between the outlet tubing and the mist generator 21 forforming the continuous stream of humid air and the stream ofincoming air into a cyclonic air flow which spiral upward towardsthe outlet tubing, surprisingly eliminates accumulation of waterdroplets or condensation at an outlet region of the hollowcylindrical chamber 2. The stream of incoming air can be returnedair or ambient air. It dependents on actual requirements.In the present embodiment, the centrifugal fan 4 can be arranged byitself at a position around the centre region inside the hollowcylindrical chamber 2 independently. As shown in FIG. 4, the hollowcylindrical chamber 2 comprises a vertical cylindrical lowerchamber 220 and a recessed roof top 210. In the present embodiment,the centrifugal fan 4 is arranged outside the vertical cylindricallower chamber 220 but at a step surface of the recessed roof top210. In the present embodiment, the outlet tubing is attached tothe recessed roof top 210 at a same level of the centrifugal fan4.In the preferable embodiment of the present application, therecessed roof top 210 is horizontally arranged above the verticalcylindrical lower chamber 220. The centrifugal fan 4 is arrangedabove the vertical cylindrical lower chamber 220 and on the lowerstep surface of the recessed roof top 210. The recessed roof top210 can have an arc-shaped structure 211 connected to the airoutlet of the centrifugal fan 4 and a tangent structure 212tangentially connected to the arc-shaped structure 211. The outlettubing can be attached to the opening of the tangent structure212.In another preferable embodiment, the centrifugal fan 4 can bearranged vertically at any spot on the step surface of the recessedroof top. FIG. 5 is a diagram showing such kind of humid air streamgenerator. As shown in FIG. 5, the hollow cylindrical chamber 2comprises a vertical cylindrical lower chamber 220 and a recessedroof top 230. In the present embodiment, the recessed roof top 230comprises a vertical cylindrical upper chamber 213 arranged abovethe vertical cylindrical lower chamber 220, and a tangent structure214 tangentially connected to the vertical cylindrical upperchamber 213. The vertical cylindrical upper chamber 213 is providedwith a recessed structure. The centrifugal fan 4 can be arrangedvertically at any spot along the vertical wall of the recessedstructure. In the present embodiment, the outlet tubing is attachedto the recessed roof top 230 at a same level of the centrifugal fan4.This embodiment will provides a greater application flexibilityespecially on application that requires a thin blanket of humid aircovering a broad flat surface.In a preferable embodiment shown in FIG.

6, an extra centrifugalfan can be added to the embodiment shown in FIG. 4 or FIG. 5 toform two centrifugal fans system delivering more power and higherhumid air output in providing greater flexibility in the usage ofthe present application.As shown in FIG. 6, the hollow cylindrical chamber 2 comprises onevertical cylindrical lower chamber 220, a first recessed roof top250 and a second recessed roof top 240. As shown in FIG. 6, a firstcentrifugal fan 420 is arranged vertically outside the verticalcylindrical lower chamber 220 but at a step surface of the firstrecessed roof top 250, a second centrifugal fan 410 is arrangedhorizontally outside the first recessed roof top 250 but at a stepsurface of the second recessed roof top 240. As shown in FIG. 6,the first centrifugal fan 420 and first recessed roof top 250 canbe constructed according the embodiment shown in FIG. 4, and thesecond centrifugal fan 410 and second recessed roof top 240 can beconstructed according the embodiment shown in FIG. 5. Based on theteaching of the present application, one skilled in the art canmanufacture the humid air stream generator shown in FIG. 6.In another embodiment, the hollow cylindrical chamber 2 comprisesone vertical cylindrical lower chamber 220, a first recessed rooftop 250 and a second recessed roof top 240, wherein a secondcentrifugal fan 410 is arranged horizontally above the verticalcylindrical lower chamber but at a step surface of the firstrecessed roof top 250, a first centrifugal fan 420 is arrangedvertically above the first recessed roof top but at a step surfaceof the second recessed roof top 240.FIG. 7 is a diagram of a humid air stream generator according to anembodiment of the present application. As shown in FIG. 7, thehumid air stream generator comprises a hollow cylindrical chamber 2with a mist generator 21 placed inside at the bottom of the hollowcylindrical chamber 2 for generating a continuous stream of humidair, an inlet tubing (unshown) attached to the hollow cylindricalchamber 2 for feeding a stream of incoming air, an outlet tubingattached to the hollow cylindrical chamber 2 (unshown), threecentrifugal fans placed between the outlet tubing and the mistgenerator 21 for forming the continuous stream of humid air and thestream of incoming air into a cyclonic air flow which spiral upwardtowards the outlet tubing, surprisingly eliminates accumulation ofwater droplets or condensation at an outlet region of the hollowcylindrical chamber 2.In the present embodiment, the hollow cylindrical chamber 2comprises a vertical cylindrical lower chamber 220 and a horizontalcylindrical upper chamber 260 extended from the verticalcylindrical lower chamber 220. One centrifugal fan 450 is arrangedin the vertical cylindrical lower chamber 220. Two centrifugal fans440 are attached horizontally side-by-side next to each other alongthe horizontal cylindrical upper chamber 260 extended from thevertical cylindrical lower chamber 220.In other embodiment, there can be more or less centrifugal fansarranged in the horizontal cylindrical upper chamber 260, and therealso can be more centrifugal fans arranged in the verticalcylindrical lower chamber 220.This design is good for the mitigation of static charge on a flatsurface or flat panel where the electronic device is placed.FIG. 8 is a diagram of a humid air stream generator according to anembodiment of the present application. As shown in FIG. 8, thehumid air stream generator comprises a hollow cylindrical chamber 2with a mist generator 21 placed inside at the bottom of the hollowcylindrical chamber 2 for generating a continuous stream of humidair, an inlet tubing 22 attached to the hollow cylindrical chamber2 for feeding a stream of incoming air, an outlet tubing attachedto the hollow cylindrical chamber 2 (unshown), a centrifugal fan 4placed between the outlet tubing and the mist generator 21 forforming the continuous stream of humid air and the stream ofincoming air into a cyclonic air flow which spiral upward towardsthe outlet tubing, surprisingly eliminates accumulation of waterdroplets or condensation at an outlet region of the hollowcylindrical chamber 2.In the present embodiment, the hollow cylindrical chamber 2comprises an upper cylindrical chamber 270 and a main chamber 280connected to the upper cylindrical chamber 270. In the presentembodiment, the upper cylindrical chamber 270 comprises a lowervertical cylindrical chamber and an upper horizontal cylindricalchamber. In other embodiment, the upper cylindrical chamber 270 canbe constructed in different ways. In the present embodiment, themain chamber 280 is rectangular. Optionally, the main chamber canbe any shape including cubical, rectangular, oval or irregularshape.FIG. 9 is a diagram of a humid air stream generator according to anembodiment of the present application. As shown in FIG. 9, thehumid air stream generator comprises a hollow cylindrical chamber 2with a mist generator 21 placed inside at the bottom of the hollowcylindrical chamber 2 for generating a continuous stream of humidair, an inlet tubing 22 attached to the hollow cylindrical chamber2 for feeding a stream of incoming air, an outlet tubing 8 attachedto the top of the hollow cylindrical chamber 2, a suction fan 4placed between the outlet tubing 8 and the mist generator 21 forforming the continuous stream of humid air and the stream ofincoming air into a cyclonic air flow which spiral upward towardsthe outlet tubing, surprisingly eliminates accumulation of waterdroplets or condensation at an outlet region of the hollowcylindrical chamber 2. The stream of incoming air can be returnedair or ambient air. It dependents on actual requirements.It is discovered that when the mixed air flow is created in acyclonic flow pattern moving along the inside wall of the hollowcylindrical chamber 2 and spiral upwards from the lower outflowregion L to the upper airflow region U, and then towards the outlettubing 8 at the upper end of the hollow cylindrical chamber 2 asshown in FIG. 9, the accumulation of water droplets or condensationat the outflow outlet(s) region of the hollow cylindrical chamber 2as well as the inner wall of the hollow cylindrical chamber 2 aresurprisingly disappeared.As shown in FIG. 9, the suction fan 4 is a centrifugal fan that isattached securely onto a circular plate 3 with a centre hole 31 onthe circular plate 3 to allow the continuous stream of humid airand the stream of incoming air to pass through the centrifugal fan,so as to mix them together in forming the cyclonic air flow. Thehumid air produced by the mist generator 21 is being sucked andpassed through the suction fan 4 that is placed at a positionaround the centre region inside the hollow cylindrical chamber2.The centrifugal fan 4 can be any type on the market. Optionally,the centrifugal fan 4 can be arranged by itself at a positionaround the centre region inside the hollow cylindrical chamber 2independently, so the circular plate 3 can be omitted.In an embodiment, the centrifugal fan 4 on the circular plate 3 canbe placed in a lay-flat position as shown in FIG. 9. In anotherembodiment, the centrifugal fan can be tilted by tilting itsattached circular plate 3 at a suitable angle with reference to thehorizontal axis marked AA” in FIG. 12 to provide more designflexibilities in the applications of the current application. Thetilting angle is in the range of 0 degree to 80 degree upwards fromthe horizontal axis or 0 degree to 80 degree downwards from thehorizontal axis. Optionally, the tilting angle is in the range from5 degree to 75 degree upwards or downwards from the horizontalaxis. Preferably, the tilting angle is in the range from 25 degreeto 60 degree upwards or downwards from the horizontal axis. Morepreferably, the tilting angle is in the range from 35 degree to 50degree upwards or downwards from the horizontal axis.In the present application, the hollow cylindrical chamber can beany cylindrical shape. FIG. 9 comprises shown a preferredarrangement of the hollow cylindrical chamber 2. As shown in FIG.9, the hollow cylindrical chamber 2 comprises a verticalcylindrical lower chamber 24 and a tilted taper upper chamber 25attached to the vertical cylindrical lower chamber 24. The outlettubing 8 comprises a curving tubing 26 attached to the tilted taperupper chamber 25 and a nozzle 27 mounted on the curving tubing 26.As shown in FIG. 9, the suction fan 4 is arranged in the middle ofthe vertical cylindrical lower chamber 24. As shown in FIG. 9, theaccumulation of water droplets or condensation at the tilted taperupper chamber 25 as well as the inner wall of the curving tubing 26is surprisingly disappeared.The idea of placing the suction fan around the centre region insidethe vertical cylindrical lower chamber 24 in between the mistgenerator 21 at the bottom and the outflow region at the top inblowing out the air at such an unexpected short gap at 0 degreeangle directly onto the inside wall in creating a spinning air flowas illustrated in FIG. 9 is technically unique and unobvious.Although FIG. 9 just shows one outlet tubing 8, one skilled in theart knows that more than one outlet tubing that comprises a curvingtubing attached to the tilted taper upper chamber and a nozzlemounted on the curving tubing can be affixed at the outlet flowregion to achieve multi-outlet flow points for attractivecommercial advantage.FIG. 10 is a diagram showing the centrifugal fan and circular plateof the humid air stream generator according to another embodimentof the present application. As shown in FIG. 10, the centrifugalfan 4 comprises a drum housing with fins 41 arranged at its middlepoint 43. The drum housing further comprises an air outlet 42 whichdischarge mixed air in a direction in parallel with or tilted at asmall angle to a tangent of the drum housing at the air outlet soas to generate the cyclonic air flow along a circumference of aninner wall of the hollow cylindrical chamber 2. As shown in FIG.10, the circular plate 3 is attached securely onto an inner wall ofthe hollow cylindrical chamber 2, wherein the fins of thecentrifugal fan 4 is right above the centre hole 31 of the circularplate 3. Of course, the centrifugal fan and circular plate ofpresent application can be arranged in any other variation as ifthey can generate a cyclonic air flow.As shown in FIG. 11, the centrifugal fan 4 shown in FIG. 10 cangenerate a circular air flow along the circumference of the innerwall of the hollow cylindrical chamber 2. The cyclonic air flowcomprises its flow angle increase as it spiral up, wherein, theflow angle increases from as low as 5 degree up to a maximum of 80degree to the horizontal axis as it spiral upwards until it reachesthe extreme top of the hollow cylindrical chamber 2.FIG. 13 is a diagram showing air flow conditions that generate thespinning effect of the cyclonic air flow. As shown in FIG. 13,there is no cyclonic air flow when the air direction is blown fromthe centre point A in any direction. Referring FIG. 13, there isalso no cyclonic air flow when the air direction is blown from thepoint B to point 0 and from point B to point 0″.However, for example, the air flow spins under the followingconditions:1) Air direction from point B to point 1.2) Air direction from point B to point 2.3) Air direction from point B to point 3.Accordingly, the cyclonic air flow generates in a direction inparallel with or tilted at a small angle to a tangent of thecentrifugal fan 4 so as to form the cyclonic air flow along acircumference of an inner wall of the hollow cylindrical chamber 2.The flow angle of the cyclonic air flow that spiraled along theinside wall of the hollow cylindrical chamber 2 is in the range of5 degree to 80 degree to the horizontal axis; preferably 25 degreeto 60 degree to the horizontal axis and more preferably 35 degreeto 50 degree to the horizontal axis.FIG. 14 is a diagram of a humid air stream generator according toanother embodiment of the present application. As shown in FIG. 14,the humid air stream generator comprises a hollow cylindricalchamber 5 with a mist generator 21 placed inside at the bottom ofthe hollow cylindrical chamber 5 for generating a continuous streamof humid air, an inlet tubing 22 attached to the hollow cylindricalchamber 5 for feeding a stream of incoming air, an outlet tubing(unshown) attached to the hollow cylindrical chamber 5, a suctionfan 4 placed between the outlet tubing 52 and the mist generator 21for forming the continuous stream of humid air and the stream ofincoming air into a cyclonic air flow which spiral upward towardsthe outlet tubing, surprisingly eliminates accumulation of waterdroplets or condensation at an outlet region of the hollowcylindrical chamber 5. The stream of incoming air can be returnedair or ambient air.As shown in FIG. 14, the hollow cylindrical chamber 5 comprises avertical cylindrical lower chamber 51 and an extended outlet flowchannel 52 branched out from the vertical cylindrical lower chamber51. The outlet tubing is attached to the extended outlet flowchannel 52. In present embodiment, the suction fan 4 is placed inthe extended outlet flow channel 52. As shown in FIG. 14, theaccumulation of water droplets or condensation in the extendedoutlet flow channel 52 above the suction fan 4 is surprisinglydisappeared. Similarly, the accumulation of water droplets orcondensation in the outlet tubing attached to the extended outletflow channel 52 is also surprisingly disappeared. The workprinciple comprises been described above and is not recited herefor conciseness.In present embodiment, the centrifugal fan 4 on the circular plate3 can be placed vertical to the axis of the extended outlet flowchannel 52. In other embodiment, the centrifugal fan 4 can bearranged in other direction. The structure and arrangement of thesuction fan 4 can be completed according to the above descriptionand are not recited here for conciseness.In one embodiment of present application, the extended outlet flowchannel 52 is removable and replaceable so as to achieve morevariation and flexibility in the application of such invention.Although FIG. 14 just shows one extended outlet flow channel 52,one skilled in the art knows that more than one extended outletflow channels can be branched out from the vertical cylindricallower chamber to achieve multi-outlet flow points for attractivecommercial advantage.The inventor does not know why the surprised disappearance of watercondensation at the inside wall of the outlet tubing and the hollowcylindrical chamber by just arranging a suction fan for generatinga cyclonic air flow. This is probably due to the centrifugal effectof the spiral airflow created by arranging the suction fan ortilting the angle of the fan which causes the bigger and heaviermist droplets to spin outwards and collide onto the wall and stayat the surface of the wall. This process continues until the biggerand heavier water droplets are progressively diminished andeliminated as it progressively spirals upwards towards the airoutlet at the top end of the hollow cylindrical chamber.This air flow design not only permits the humidifier equipment toachieves a condensation-free humid air stream, it is also a simpledesign that is technically superior and easy to maintain withoutthe need to incur modification of the equipment like adding heater,etc in the air flow system to overcome the condensationproblem.Such technical design not only simplifies and minimizes the productcomponent parts required in the creation and formation of aspinning air flow, it also shorten the height of the verticalcylindrical chamber due to optimum spinning efficiency to reducematerial cost and saving space in the real-life application of suchproduct in a often space limited compact production facility.The invention effectively eliminate the unwanted water droplets orcondensation formed at the inside wall of the outflow tubing andthe inside wall of the upper outflow region of the humid air streamgenerator in a simple and unconventional methodology.* * * * *