WO2021186372A1

WO2021186372A1 - Air delivery mechanism for fans, air coolersand air conditioners

Info

Publication number: WO2021186372A1
Application number: PCT/IB2021/052252
Authority: WO
Inventors: Harbhajan Singh Amar Singh MARAS
Original assignee: Maras Harbhajan Singh Amar Singh
Priority date: 2020-03-20
Filing date: 2021-03-18
Publication date: 2021-09-23

Abstract

The various embodiments herein provide an air delivery mechanism comprising a fan, a gear box, a shaft rod, a connecting rod and a duct. The fan is fitter with a fan motor and connected to a motor shaft over a motor base plate. The gear box is connected to a rear end of the motor shaft. The shaft rod is connected to the motor through a bearing connected to a clamp fitted over the motor body. The connecting rod is bushed to a circular disc through a pin connected to a corner of the circular disc. The circular disc is mounted on the shaft rod. The duct is connected to the connecting rod through a ring. The ring is connected to an end of the connecting rod opposite to the pin.

Description

AIR DELIVERY MECHANISM FOR FANS, AIR

COOLERSAND AIR CONDITIONERS

BACKGROUND Technical Field of Invention

[001] The embodiments herein relate to an air delivery mechanism and particularly relates to an air delivery mechanism to be retrofitted in a plurality of air blowing units such as fans, air coolers etc. The embodiments herein more particularly relate to an air delivery mechanism with duct connected to the blades.

Description of Related Art

[002] In a prior art Indian patent no. 113388, accepted on 25th September 1968 this unique art was produced for public. The idea was innovative and attractive, the deflection of air was due to force of air instantly accumulated and thrown in a direction, thus deflection was limited. No advancements or improvements were made afterwards.

[003] In this prior art a shaft carrying multiples’ round metal sheets, mounted from centre at same angle. These plurality of disc assembled in front of air delivery mouth, which are rotatable, all disc are mounted at same angle of deflection, when shaft rotates on the bearings provided, on perpendicular walls of cabinet, at both ends of shaft, On rotation of shaft on the delivery mouth of duct, air is thrown with built force, on both sides of duct mouth. The direction of blown air into the duct, by fan fitted below the duct creates a storm and blows air out from the duct vent with force, which rotates the said discs on said shaft, and the air is delivered- deflected from vent opening. The vent opening is at angle to the fan motor assembly. [004] The above-mentioned shortcomings, disadvantages and problems are addressed herein, as detailed below.

SUMMARY OF THE INVENTION

[005] The main objective of the embodiment herein is to construct fans/ air coolers/air conditioners to deflect the air thrown by blade, by rotation of air delivery duct.

[006] The other objective of an embodiment herein is providing an assembly which can be used as alternative to ceiling fans that can be fitted outside the room, in the porch, gallery, outside grills of room.

[007] Another objective of an embodiment herein is to provide a washable filter to provide dust free fresh air.

[008] Yet another objective of an embodiment herein is to use the said assembly in huts and mud houses where otherwise it is very difficult to use ceiling fan, due to hut construction and weather tiles and wooden rafter on the ceiling.

[009] Yet another objective of an embodiment herein is to cover the assembly with a solar panel to draw power from renewable source and also keep cool the assembly as insulator.

[0010] Yet another objective of an embodiment herein is to supply cool or warm air for Improvement to forced air convection system.

[0011] Yet another object of an embodiment herein is to use as a table fan, a pedestal fan, a wall fan, to form a blade less fan.

[0012] The various embodiments herein provide an air delivery mechanism comprising a fan, a gear box, a shaft rod, a connecting rod and a duct. The fan is fitter with a fan motor and connected to a motor shaft over a motor base plate. The gear box is connected to a rear end of the motor shaft. The gear shaft rod is supported by clamp around motor body and bearing on said gear shaft. The connecting rod is bushed to a circular disc through a pin connected to a corner of the circular disc. The circular disc is mounted on the gear shaft rod. The duct is connected to the connecting rod through a ring. The ring is connected to an end of the connecting rod opposite to the pin.

[0013] According to one embodiment herein, the duct comprises a duct shell and is connected to a shaft, geared to a motor. The motor is further connected to a timer reverse mechanism for reversing a revolution direction of the duct shell.

[0014] According to one embodiment herein, the clamp is fitted below the fan and the pin at the corner of the circular disc forms a crank and is bushed by the connecting rod and a second end of the connecting rod is bushed at the ring to form a four-bar mechanism to oscillate the ring over a load clutch. The load clutch is provided in the gear box.

[0015] According to one embodiment herein, a thrust bearing is provided between duct ring and motor base plate. The duct is hanged by a set of vertical arms connected from the motor base plate and an inner top of the duct shell for free circular rotation of duct.

[0016] According to one embodiment herein, a circular one-way diverter is mounted over a fan blade. The diverter revolves free over the fan blade creating an air thrust. The air strikes a wall of the duct from an inner side leading to a movement of the duct in a direction of the air thrust and said revolution of the diverter creates an oscillatory motion in the duct. [0017] According to one embodiment herein, an upper bearing in the thrust bearing comprises an insulated electromagnet on a plurality of arms attached to the ring to create a non-physical bearing.

[0018] According to one embodiment herein, the duct has a cooled as well as heated suction from a suitable source which comprises at least one of a water-cooled absorbent material, a rotating coir drum, rotating belt, a gas or a refrigerant cooled coil, a Peltier- effect based electronics mechanism, and a steam or a heater. [0019] According to one embodiment herein, a flexible inflatable attachment is attached on a duct mouth to get warm as well as cold air by oscillation of the duct.

[0020] The fan motor is fitted with a reduction gear box at rear end of motor shaft, which is formed as worm. The said gear box reduces the RPM of motor, obtained at other end of motor shaft, some distance away from motor-diameter, as a rotating shaft, parallel to motor shaft, this reduced rpm-shaft- revolution is brought below the fan, with the help of bush /bearing, supporting from motor body by clamp around the motor diameter.

[0021] The reduced RPM shaft is provided with a disc having an off-centre pin, forms a crank. The crank pin gives reciprocating circular motion on rotating. The connecting rod is bushed on the crank pin. The other end of connecting rod is bushed to the shaft rod connected to a duct-moveable-ring which thus oscillates the duct.

[0022] The shaft rod on which crank disc is mounted has very slow RPM. A crank disc pin is bushed to shaft on a rotatable ring (having plurality of ball cone and another disc). The said linkage between said crank pin and said shaft on rotatable ring on said duct sets the said duct in an oscillating motion. Thus, a mouth opening of duct discharges air at different angles. This mechanism can be arranged to widen degree of rotation of duct on both sides depending on strength of reduction gear box attached to fan motor. This forms a duct rotating/oscillating assembly in any fan or cooler or air blowing unit including air conditioning unit.

[0023] According to one embodiment herein, a circular ring is mounted above the fan, so that the fan is able to revolve freely in circular motion. The circular ring is parted or fitted by means of louvers/patties’ . All the louvers/patties’ are fitted at same angle of deflection, which act as one way diverter and the air is discharged at different angle when this circular ring rotate from bearing provided at centre. Due to angle of louvers/patties’ and force and a direction of drifting air, the duct is set in circular motion. The air is automatically circulated within duct. The speed of the circular ring may be regulated by adjusting angle of diversion of louvers/patties’ or distance of this mounted ring from the drifting/blowing air, the rotation of ring can be made elliptically.

[0024] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF THE DRAWINGS [0025] The other objects, features and advantages will occur to those skilled in the art from the following description of the preferred embodiment and the accompanied drawings in which:

[0026] FIG. 1 illustrates an exploded view of an air delivery mechanism, according to one embodiment herein.

[0027] FIG. 2 illustrates a perspective view of an air cooler assembly, according to one embodiment herein.

[0028] FIG. 3 illustrates an exploded view of an air delivery mechanism when used in the air cooler, according to one embodiment herein.

[0029] FIG. 4 illustrates an exploded view of the air delivery mechanism when a one way circular diverter is mounted on a circular access of the fan on the motor base plate P, according to one embodiment herein. [0030] FIG. 5 illustrates an exploded view of the air delivery mechanism without a cooling pad, according to one embodiment herein.

[0031] FIG. 6 and FIG. 7 illustrates an exploded view of the air delivery mechanism attached to a non-rotating fan with flange and actuator to change an angel of a fan leaf, according to one embodiment herein.

[0032] FIG. 8(1) and 8(2) illustrates the air delivery mechanism in a duct-over-duct configuration, according to one embodiment herein.

[0033] FIG. 9 illustrates the air delivery mechanism for use as wall fan with filters, according to one embodiment herein.

[0034] FIG. 10 illustrates the air deliver mechanism for use as a tower fan or a table fan, according to one embodiment herein.

[0035] FIG. 11 and FIG. 12 illustrates the air delivery mechanism with plurality of mouth opening in a plurality of geometrical shapes and sizes in a duct, according to one embodiment herein.

DETAILED DESCRIPTION OF THE DRAWINGS [0036] In the following detailed description, a reference is made to the accompanied drawings that form a part hereof, and in which the specific embodiments that may be practiced is shown by way of illustration. The embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments and it is to be understood that the logical, mechanical and other changes may be made without departing from the scope of the embodiments. The following detailed description is therefore not to be taken in a limiting sense.

[0037] The aim of the present invention is to make an advance version of an air deflection in coolers, fans and A.C. Also, scope of working is extended to almost all ranges of air- blowing unites. The present air delivery mechanism enhances range of accuracies in all air blowing units.

[0038] With respect to FIG. 1- 12, the duct shell is mounted to revolve freely from motor base plate P (101), by either thrust bearing provided at outer side of fan rotating ring (102), at motor base plate, or by connection from the ring R3 (103) placed at the ring R4 (104) to the inner shell of duct shell S (105) by bearing, gears or/and shafts.

[0039] In FIG. 1, the duct shell revolves by giving connection to the shaft SI (106) through a geared motor/synchronous motor from outer/inner of duct shell S (105), motor m (107) rotates the duct shell in a first direction, while a timer reverse mechanism revolves motor m in reverse direction, thus the duct shell S oscillates and deflects air by revolving in both directions.

[0040] In FIG. 2, a gear box (201) is fitted at rear side of the fan motor by forming worm on extended motor shaft (202)to bring a reduced RPM shaft rod R (203) parallel to motor (M) shaft (202), C2 is a clamp (205) around motor (202) and extended to hold the shaft rod R (203) by bush/bearing, and brought below the fan F (207), a circular disc Cl (208) mounted on rod R, with a pin (209) at comer of circular disc Cl, forming a crank. The pin P2 (210) on disc Cl bushed by connecting rod n (211), other end of the connecting rod bushed at ring R4to form a four-bar mechanism to oscillate the ring R4overload clutch is provided in gear box G.

[0041] The rod R can have more gear to circulate a gear ring at R4 to revolve the duct at 360 degree, as there is no electrical wiring, there is no obstacle for duct shell to rotate full round continuously

[0042] In FIG. 3-5, the air delivery mechanism work is shown by oscillating air blown through one-way circular rotating diverter D1 (301) placed above the fan on ring R2 (302), supported by a bearing at canter. By utilizing the wind pressure created in the duct, by fan F, the one-way circular diverter starts rotating, throwing air towards wall of duct shell S. As the air impinges on walls of duct shell S, the duct starts oscillating and the direction of oscillation depends upon direction of revolving diverter air. The revolution of diverter D1 can be regulated by changing an angle of louvers in D1 or by altering R2 distance from blade. This can be used in coolers, or fans to circulate the air.

[0043] In FIG. 6 and 7, the air delivery mechanism works by revolution of the duct shell S. In the arrangement shown in FIG. 6 and 7, a blade set is provided on the duct shell S opposite to fan F. The fan F is a non-revolving flanged blade, with two synonym angle changing patterns in a clockwise and a counter-clockwise direction provided by a retractable actuator the retractable actuator is mounted in the duct and is attached a spring- loaded lever. The retractable actuator changes a blade angle direction on being struck by push to the end point through the retractable actuator without any electrical source.

[0044] FIG. 8(1) & 8(2) shows a duct over duct arrangement. The upper duct shell SI is a duct open from sides and is fixed for use in windows and offers safety from weather and from personnel and goods movements. A small duct D1 is assembled on the fan base plate P and has an opening to blow air while rotating in varied directions. The small duct rests on thrust bearing at motor base plate P. The upper duct is fixed on larger circular ring at motor base plate P.A permanent magnet is fixed on small duct on top with insulator and collinear to this magnet electromagnet is mounted on inner top of a fixed outer duct at a distance of levitation/repulsion. The small duct starts rotating in a forward direction when electromagnet current flow in a reverse direction thus creating an oscillation. This allows the air delivery mechanism s to deflect air in varied directions. The position of electromagnet and permanent magnet are interchangeable.

[0045] The FIG. 9 &10 shows a wall fan, tower fan or table fan. In all these, a rotation of air delivery mechanism duct shell S, revolves/ oscillates by techniques as described in all the previous embodiments, herein, used for wall/tower/table fan, this will work as blade less air deflector wall fan, table fan or tower fan. It can also accommodate filter at the suction area, thus blow filtered air at varied places.

[0046] The FIG. 11 shows the air deflector mechanism ducts in varied shapes. The duct may have one or more mouth at any degree to each other. The duct may have one or more vent mouth to blow air parallel or/and perpendicular to each other.

[0047] The duct frame inner shell has round opening ring over the fan blade, either coinciding with the circular cutting at a fan rotation vent or other bigger/smaller circle on the same plane anywhere inside/outside the cabinet frame of cooler. The cabinet frame has enough strength to handle the weight and force of moving duct. The duct is provided with thrust bearing, or plastic bearing/ stainless steel balls bearing/bush with glass balls. The duct is made from non-rusting materiel, like plastic, acrylic sheets with thermal joints, adhesive, mouldings, or likewise.

[0048] The duct can also be hanged by vertical arms supported from the circular ring at fan, to the top of duct, by providing connection between said duct and said arms- supports by bush/ bearing / gear /shaft for free rotation of said duct.

[0049] A slow RPM of small synchronous/ geared motor is coupled to said connection at the duct (a slippery overload clutch is provided between this coupling) inner wall. The motor rotates the said connection at duct inner shell and hence the duct revolves in a direction which will be reversed in opposite direction by providing electronic circuit /electrical pole changing signal from the reversible timer mechanism or a mechanical reverse gear mechanism. Thus, the duct deflects air on both sides on revolving.

[0050] The air deflection can also be obtained by revolution of duct by the same fan motor, with more safety from wirings and connections. [0051] The fan motor is fitted vertically below the opening made for fan rotation/re volution to draw the air and blow air into said duct. The air flow finds the way from vent/opening in the said duct at an angle to the body, motor, and fan fittings.

[0052] The duct frame has round opening at the fan side which coincide/interface at ring with circular cutting of fan. The duct body frame may have other bigger/small circle on the same plane anywhere inside/outside the cabinet frame of assembly coinciding with synonyms ring on the frame. The weight of duct is provided on plastic thrust bearing or likewise, on these coinciding rings. The duct is made from a non-rusting sheeting’s like stainless sheets, G.I or aluminium or PVC, UPVC, CPVC or other plastics by bending, screwing, joint by adhesive or thermal joints or mouldings’, castings or likewise.

[0053] As the fan rotates, due to direction and force of air from revolving diverter- ring, the duct is constrained to move in direction of drifting air which impinges on the wall of duct. The duct starts revolving in the direction of the movement of air stream concentrated by circular diverter ring. Due to rotation of circular diverter rotating ring, the duct rotation will be synchronized in both directions.

[0054] Thus, the cool air from fan is blown on both sides of the air blowing unit, and the duct is continuously set-in motion of oscillation. The mechanism can be set as starting point by rotating the duct manually at any circular position, around the cabinet, to cover different area of oscillation as required.

[0055] According to one embodiment herein, one or more blades/leaves are provided on opposite side (of fan which is blowing air) and is facilitated on the top inner surface of the duct. The blown air strikes with full force on the blade leaves are fixed in a non- revolving or non-rotating mode. But the angle of leaves’ set is adjustable to form a clockwise or counter-clockwise blade in two or more angles. [0056] According to one embodiment herein, the said set of blades is fitted at some distance from the inside wall of top of duct, opposite to motor’s fan blade. This set of fixed blades is fitted on flanged provided with rotatable mechanism in two synonym angle with a retractable actuator, an electrical timer motor/actuator, a motion control sensor or a pinion-gear diaphragm chuck to rotate set of fix blades to alter the angle of blade to clockwise or counter clock wise.

[0057] The duct assembled on the top of motor-fan assembly circle (collinear with circular access to the inner portion of duct) is free to revolve. The air impinges on fixed blades fitted on inner wall of the top duct. Due to direction & force of air impinging on fixed set of blade, the duct starts revolving. The air starts blowing from the duct mouth/opening and air is discharged at revolving angle of the duct. The duct moves in a direction up-till the angle of blade at inner top of duct is reversed by actuator or other means.

[0058] According to one embodiment herein, an inner duct of small size is provided within an outer duct with the same features of rotation. The outer duct is fixed in areas where less space is available for rotation of big body, or when top of duct is used inside the room as table/fix top or used as a protection cover when used outside the room. This inner duct may be circular in outer shape, easily rotatable within said outer duct. The said circular inner duct has different inner shape inside to create air-storm for movement of air towards the open vent in duct, which is at angle to fan.

[0059] According to one embodiment herein, when small shell is revolving, either big shell or small shell is provided with leaf diverter in direction to throw air downward or upward manually or can be driven by synchronous motor upwards-downwards. leaf diverter could be provided to horizontal section of duct vent to widen the deflection of air on both sides. [0060] According to one embodiment herein, there are plurality of mouth opening in a duct with plurality of geometric shapes and sizes in a duct. The plurality of duct vent can utilize in a single structure plurality of technique to blow air and can draw air from pluralities of cooling/heating mediums and filters.

[0061] According to one embodiment herein, an inflatable attachment fitting is provided in front of duct mouth to get an air deflection at a needed angle and calculated period which can be used in treatment of hypothermia by hot or cold air blow.

[0062] According to one embodiment herein, as motor and wiring all are below the duct, and when duct revolves round at 360degrees, no wiring obstructs the revolution of duct to any degree.

[0063] According to one embodiment herein, the duct is made of very lite weight with Galvanized Iron/Stainless Steel sheeting with rubber sleeving/packing in the joints to avoid the sound/vibrations. Further, a preferred material is plastic/ uPVC sheet joint with good thickness to screw the joint or form a joint by solvent or provide heated/thermal joints. [0064] According to one embodiment herein, the oscillation/revolution of duct-shell can be made by magnetic repulsion/levitation, when assembly has outer shell fixed. To the inner shell top of the duct, a partly insulated electromagnet is mounted on the center of axis matching with center of rotating axis of the inner rotating duct. On the upper shell top, a partly insulated permanent magnet is mounted at suitable distance of repulsion/levitation. The air is deflected from the vent opening in duct at an angle to the fan assembly.

[0065] According to one embodiment herein, when fan assembly has only one duct-shell, the fan fitted below duct vertically is clamped on the base plate and the duct is rotatable on said the base plate. An electromagnet is mounted on a suitable platform from the base plate on the projected non-metallic arms, below the inner shell in duct. Also, a partly insulated permanent magnet mounted at suitable distance of repulsion/levitation to the inner shell, top of said duct. In a plug-in format the electromagnet the said duct starts rotating in a direction until the field is reversed, the rotation will be reversed and thus air will be deflected on both sides by duct, oscillation/revolution. The placement position of electromagnet and permanent magnet are interchangeable.

[0066] The air delivery mechanism in an embodiment herein can be used as an alternative to the ceiling fan with benefits to draw fresh air continuously and a removable/washable filter can also be inserted below suction area. This air delivery mechanism can be used in small houses, in an outside ambience, on walls/grills/door top, for circulation of fresh filtered air. The ratio of air borne contaminates to the oxygen starts decreasing with entry of fresh air. This air delivery mechanism improves humidity inside the room due to fresh air intake continuously. This air delivery mechanism when used in air coolers, air conditioners the cool air or conditioned air circulates very evenly throughout the area/room. A removable, washable filter can be used below in suction area of fan, also an add-on/removable cooler structure with one or more absorbent pad, or compressed gas cool/water cool, coil cowl can be added and removed. The use of air delivery mechanism put ceiling fan space open for other uses, and danger for ceiling fan fall accidents are also avoided.

[0067] It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the claims.

[0068] It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the claims.

Claims

CLAIMS: I claim:

1. An air delivery mechanism comprising: a fan, wherein the fan is fitter with a fan motor and connected to a motor shaft over a motor base plate; a gear box, wherein the gear box is connected to a rear end of the motor shaft; a shaft rod, wherein the shaft rod is connected to the fan motor through a bearing connected to a clamp fitted over a fan motor body; a connecting rod, wherein the connecting rod is bushed to a circular disc through a pin connected to a comer of the circular disc, wherein the circular disc is mounted on the shaft rod; and a duct, wherein the duct is connected to the connecting rod, through a ring; wherein, the ring is connected to an end of the connecting rod opposite to the pin.

2. The air delivery mechanism according to claim 1, wherein the duct comprises a duct shell and is connected to a shaft geared to a motor, wherein the motor is further connected to a timer reverse mechanism for reversing a revolution direction of the duct shell.

3. The air delivery mechanism according to claim 1, wherein the clamp is fitted below the fan and the pin at the corner of the circular disc forms a crank and is bushed by the connecting rod and a second end of the connecting rod is bushed at the ring to form a four-bar mechanism to oscillate the ring over a load clutch, where in the load clutch is provided in the gear box.

4. The air delivery mechanism according to claim 1, wherein a thrust bearing is provided between duct ring and motor base plate, wherein the duct is hanged by a set of vertical arms connected from the motor base plate and an inner top of the duct shell for free circular rotation of duct.

5. The air delivery mechanism according to claim 1, wherein a circular one-way diverter is mounted over a fan blade, wherein the diverter revolves free over the fan blade creating an air thrust, wherein the air strikes a wall of the duct from an inner side leading to a movement of the duct in a direction of the air thrust and said revolution of the diverter creates an oscillatory motion in the duct.

6. The air delivery mechanism according to claim 4, wherein an upper bearing in the thrust bearing comprises an insulated electromagnet on a plurality of arms attached to the ring to create a non-physical bearing.

7. The air delivery mechanism according to claim 1, wherein the duct has a cooled as well as heated suction from a suitable source.

8. The air delivery mechanism according to claim 7, wherein the suitable source comprises at least one of a water-cooled absorbent material, a rotating coir drum, rotating belt, a gas or a refrigerant cooled coil, a Peltier-effect based electronics mechanism, and a steam or a heater.

9. The air delivery mechanism according to claim 1, wherein a flexible inflatable attachment is attached on a duct mouth to get warm as well as cold air by oscillation of the duct.