Claims:
1. An evaporative air cooler assembly, comprising:
sheet metal enclosure (1) housing having a hollow interior with plurality of air inlet that permits ambient air to flow into said housing;
a cooler inside assembly including of a water tank, (2) a channel on both sides attached above the tank, a frame to house the cooling pads, a fan motor assembly attached to the water tanks vertically, water distribution channel on four sides at the top and a pump in the tank configured to pump water up onto the water trays;
a face plate with multiple openings for the air from the fan to flow is provided which can fit on to the front side of the assembly;
at least one air outlet vent formed in said housing through which air that has traveled through said cooling pads is directed into an ambient environment; and wherein
the said cooler inside assembly is configured for slidably mounted within outer sheet metal enclosure housing.

2. An evaporative air cooler assembly as claimed in claim 1, wherein the said cooler is configured for fitting onto a window with the said sheet metal enclosure housing is protruding outside the window.

3. An evaporative air cooler assembly as claimed in claim 1, wherein water can be easily filled from the front through inlet hole or a direct pipe connection through face plate.

4. An evaporative air cooler assembly as claimed in claim 1, wherein the cooler inside assembly is locked in position inside the sheet metal closure housing.

5. An evaporative air cooler assembly as claimed in claim 1, wherein sheet metal enclosure is of various shapes and configurations of wall panels which are fastened together with traditional fasteners, such as screws, bolts and nuts, and rivets to make an outer housing.

6. An evaporative air cooler assembly as claimed in claim 1, wherein cooler inside assembly include hinged panels or panels that slide or glide relative to each other in order to allow the said assembly to be slide inside the outer housing from any of the open end selectively opened for access to the interior of the cooler inside assembly.

7. An evaporative air cooler assembly as claimed in claim 1, wherein the cooling pads are honeycomb cooling pads, wood wool and the like.

8. An evaporative air cooler assembly as claimed in claim 1, wherein wall panels of the outer enclosure housing includes guide rails disposed on walls.

9. An evaporative air cooler assembly as claimed in claim 1, wherein the installation of said air cooler with slide assembly, facilitate cleaning, repair and replacement.

10. An evaporative air cooler assembly as claimed in claim 1, wherein the components of cooler inside assembly viz water tank, honey comb cooling pads, fan motor assembly and water distribution tray are configured to adopt cassette type assembly and installed from front end.
, Description:
FIELD OF INVENTION
The present invention, generally, relates to air cooling or evaporative air cooler assembly. More particularly, it relates to a portable evaporative window desert cooler with integration of the evaporative cooling ventilation cooling system in combination modified design for ease in assembly and mounting.

BACKGROUND ART
There are two types of thermal comfort devices available today.
One is an air conditioning system, which uses a vapor-compression or absorption refrigeration cycles. Air conditioners are relatively very high cost comfort solution as it has many parts and consumes very high energy. This is an un-affordable solution for common man. This also disturbs the power supply network during summer, when power demand increases.

An economic and sustainable thermal comfort solution is an evaporative cooler. An evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, Evaporative cooling works by exploiting water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants. Such a device is also affordable by common man and consumes considerably low energy.

Evaporative coolers are available in the market with many variations for the user’s convenience. Indoor coolers with different tank capacity and types such as floor placed, desk placed etc are available. There are also coolers, which can be placed outside a window. Window coolers generally are installed outside the room, near the window facing the room. It requires a set of mounting bracket and space outside window. It is difficult to install a window cooler outside a window in high rise apartments.

Desert coolers or evaporative coolers are commonly used in hot, dry areas. They require a constant supply of fresh air such as from an open window and provide a continuous output of cooled, humidified air which is a product of evaporation caused by the input air cooling as it flows through a wet air permeable wick driven by a fan. Evaporative coolers are usually large in size and require a good amount of space in the house. They include a reservoir with a pump component that continuously saturates the wicks.

Evaporative coolers, even if made smaller, still could not solve issues in regard with installation, space, multiple assembly schedules for accessories / parts and the most important in case of outdoor unit which is configured for assembly / disassembly from one side only and preferably from the front side only.

Therefore, there is a need for a window based evaporative air cooling device that does not require a conventional procedure of assembly so that it can be truly portable. There is also a need for an air cooling device that includes a spill free water reservoir so that leakage and spillage problems associated with portable reservoirs are eliminated. The needed device should be very compact and light-in-weight so that it has a personal size scale that is efficiently used by a user. It should be easy to use, easy to maintain in a clean condition, and should be designed so that it can operate for long periods of time.

In the prior art an US specification US4234526 discloses a configuration to access the internal parts, by using open able cover attached to the body. The disclosed evaporative cooler is having a one-piece, frameless shell secured to a bottom pan and having a top cover hinged along one edge to the side wall of the housing shell. A quick-release latching mechanism secures the top cover to the opposite side wall to hold the top cover closed while permitting the top cover to be easily opened for access to components of the evaporative cooler housed therein. Evaporative media pad assemblies have side frame members having V-shaped outer surfaces which slide in correspondingly shaped tracks in the corners of the shell to space the pad assemblies from the louvered side walls of the shell and permit the pad assemblies to be installed and removed from above with a vertical sliding movement.

This does not provide a workable solution for window type coolers installed outside the window especially in high rise building apartments.

In another prior art 4576/MUM/2015 discloses an evaporative air cooler which comprises of an evaporative air cooler with a specially designed collapsible handle, which can be pulled up from Air cooler body and brought to an extended position from top wall of the Air cooler such extended position being the comfortable height for manual movement of the air cooler. The handle is extended from a first position where the pull-out handle is near the top wall of the Air cooler body to a second position where the handle is positioned on the upper levels as compared to the level of the top wall. The pull-out handle bracket is coupled with the Air cooler body and houses a pair of handle rods that are coupled and retractable into the pull-out handle bracket by a sliding movement relative to the Air cooler body to allow the handle to be extended between the first position and the second position.

It is suggested that a pull out handle attached to the cooler body with a sliding movement for easy opening of the assembly. This also does not provide a solution to the evaporative cooler installed outside the window especially in high rise building apartments due to lack of accessibility.

The coolers have a water tank, cooling pads and an air moving mechanism either a fan or a blower. It requires regular filling of water in the tank. Cooling pads and water tank need regular cleaning to maintain cooling efficiency and to avoid insect breeding. Water in the tank is pumped up, to make the cooling pads wet. This pump also may require cleaning, repair or replacement. Maintenance or repair of a window cooler installed outside the window is a challenging task. Accessibility and handling is also difficult.

An evaporative cooler which can be installed in a window frame, which eliminates the problems of service, maintenance, and repair and facilitates easy water filling, is disclosed herein. This requires less floor space, better aesthetics to suit the interior and also consumes less energy.

However, in view of the prior art taken as a whole at the time the present invention was made, it was not obvious to those of ordinary skill how the identified needs could be fulfilled.

OBJECT OF OBJECTION
It is the object of this invention to find a solution for the above mentioned problems related to service, maintenance and repair,

Therefore the primary object of this invention is to provide evaporative air cooler means that is adapted to be installed and assembled through one direction using slide operation only and further avoiding any cumbersome assembly procedures.

Another object is to have a cooler which can be easily installed in a window frame.

Another object is to enable the servicing, repair etc from inside the room itself.

Another object is to achieve a modular construction for easy installation.

Another object is to have a cooler which occupies less or no room space.

Another object is to provide a spill-free, tray type assembled evaporative air-coolers.

Another object is to achieve easy water filling from the room indoors.

Another object is to achieve fresh air supply from outside to the inner room.

Another object is to provide a cooler which best suits to the interior.

SUMMARY OF INVENTION
The inventive structure is a compact, portable, evaporative air cooler with a blower or fan arrangement powered by an electric motor that moves air through an air-permeable water-retaining element such as a sponge /wick and preferably honey comb cooling pads. The fan blows the cooled air to an air outlet that directs cool and humidified air towards a user's face, head, or body as selected by the user.

The coolers have a water tank, cooling pads and an air moving mechanism either a fan or a blower. It requires regular filling of water in the tank. Cooling pads and water tank need regular cleaning to maintain cooling efficiency and to avoid insect breeding. Water in the tank is pumped up, to make the cooling pads wet. This pump also may require cleaning, repair or replacement.

Therefore the disclosed herein air cooler is ease out the conventional procedure of the maintenance or repair of a window cooler installed outside the window. The accessibility and handling of all the components is made easy. An evaporative cooler which can be installed in a window frame, which eliminates the problems of service, maintenance, and repair and facilitates easy water filling, is disclosed. This requires less floor space, better aesthetics to suit the interior and also consumes less energy.

Therefore such as herein described there is provided an evaporative air cooler assembly, comprising a outer sheet metal enclosure housing having a hollow interior with plurality of air inlet that permits ambient air to flow into said housing; a cooler inside assembly including of a water tank, (2) a channel on both sides attached above the tank, a frame to house the cooling pads, a fan motor assembly attached to the water tanks vertically, water distribution channel on four sides at the top and a pump in the tank configured to pump water up onto the water trays; a face plate with multiple openings for the air from the fan to flow is provided which can fit on to the front side of the assembly; at least one air outlet vent formed in said housing through which air that has traveled through said cooling pads is directed into an ambient environment; and wherein the said cooler inside assembly is configured for slidably mounted within outer sheet metal enclosure housing.

These and other important objects, advantages, and features of the invention will become clear as this description proceeds.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts that will be exemplified in the description set forth hereinafter and the scope of the invention will be indicated in the claims.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig.1 illustrates a schematic representation of cooler in accordance with the present invention;

Fig 2 illustrates an exploded view of cooler showing key components in accordance with the present invention;

Fig 3 illustrates an installation sequence in accordance with the present invention;

Fig 4 illustrates step wise installation sequence in accordance with the present invention;

Fig 5 illustrates a view showing ease of service in accordance with the present invention.

DETAILED DESCRIPTION
The drawings include descriptive text and examples identifying components for preferred embodiments, which are incorporated herein by reference.

Referring to FIGS. 1, there is illustrated a schematic view of the evaporative air cooler unit, , with a typical sheet metal enclosure (1), water tank (2), honeycomb cooling pads (3), fan motor assembly (4) and face plate (5) configured to be assembled in a sliding mode in an air cooler unit. Since the focus of the present invention is directed to the assembly of the complete unit, details on the operation of the air cooler itself are not provided. The present cooling unit can, however, be adapted to a wide variety of different air cooler systems by being adapted to fit onto external metal enclosure of the air cooling units, as will become apparent in the following description.

Disclosed evaporative cooler configuration consists of a sheet metal enclosure (1) as in Fig.2 which is mounted in a window cutout protruding outside. This is suitable for standard cut out size of all air conditioners available for ease of installation. Cooler inside assembly which consists of a water tank (2) a channel on both sides attached above the tank (not marked) a frame (not marked) to house the cooling pads (3) fan motor assembly (4) attached to the water tanks vertically as shown in Fig 2, water distribution channel (6) on four sides at the top and a pump in the tank (not marked) which will pump water up onto the water trays. A decorative face plate (5) or front panel with multiple openings for the air from the fan to flow is provided which can fit on to the front side of the assembly.

As shown in Fig 3 and 4, during assembly of the disclosed once the sheet metal enclosure is fixed on to the window, user has to slide the assembly, shown in the middle of Fig.2 , in the enclosure. There is provided a smooth and error free mating parts on both the metal enclosure and on the channels on the water tank. The face plate (5) is then fixed to the unit and there provided the locking arrangement viz snap fit locking arrangement. Water inlet opening is provided on the face plate. Fan speed control, power control & pump control switches are provided on the front face plate (7).

Whole cooler will fit into the window, main body protruding outside. Water can be easily filled from the front through inlet hole or a direct pipe connection.

It is easy to install the cooler in a window frame. No additional brackets for support are necessary outside. Whole cassette assembly can easily be slided and locked in the enclosure. A single person can handle this operation with ease.

Water filling is easy from inside the room through the inlet opening on the front plate or through a pipe which can be connected for continuous flow filling. A float switch ensures that tank is not overfilled.

Opening of the cooler is easy for service or maintenance. The cassette assembly is just required to be unlocked and pulled out. Cooling pads, motor, fan blade and pump are easily accessible to the user for cleaning or other maintenance. The cooler does not occupy usable carpet area in the room. Hence saving of precious space is provided. Further, there is no necessity of cooler placement with space behind and near the window or door for fresh air supply. Air is sucked from outside, routed through wet cooling pads and blown inside the room. This gives an enhanced thermal comfort to the user. The closing of cooler does not take much effort and time. The cassette assembly will easily get slided and can be locked in position.

A significant feature of the present unit is the ability to mount the evaporative air cooler unit on many different types and shapes of sheet metal enclosures. The other parts viz water tank, honey comb cooling pads, fan motor assembly and water distribution tray are being designed so that they can adopt cassette type assembly and installed from any of the open end (front / back) . In a preferred embodiment, sheet metal enclosure includes various shapes and configurations of wall panels which are fastened together with traditional fasteners, such as screws, bolts and nuts, and rivets to make an outer housing. The cooler inside assembly may also include hinged panels or panels that slide or glide relative to each other, which may include the use of mechanical glides or rails, to allow the said assembly to be slide inside the outer housing from any of the open end selectively opened for access to the interior of the cooler inside assembly.

In an alternate embodiment, the wall panels of the sheet metal enclosure may optionally be snap together wall panels so that panels of different shapes and sizes and configurations can be assembled to fit different types of cooler inside assembly and vice versa or different installation conditions encountered during installation. Different configurations of snap connectors may be used with the optional snap together panels in alternate embodiments. The optional snap connectors may be snapped in a forward direction or snapped in a backward direction. The panels shown in figures are plain, solid snap together panels for purposes of simplicity of illustration. Once the appropriate wall panels of sheet metal enclosure are assembled, screws or other fasteners may be provided to secure the wall panels in place to the remainder of the housing. Wall panels with suitable dampers, plain panels and other types of panels may be assembled to form the enclosure. Wall panel, including suitable damper wall panels, of different heights widths, and configurations may be used to accommodate different sized cooler inside assembly.

Further, as discussed in Fig 3 and 4, the slide-type assembly of components / modules and a slide module tray slidably disposed in the sheet metal enclosure. In an exemplary embodiment the wall panels of the outer enclosure housing includes guide rails (not shown) disposed on walls so that the final assembly of the cooler inside assembly components can be carried out with least efforts and the alignment problems during assembly can be eliminated. The entire cooler inside assembly is put in sliding packing height to prevent dust and the like onto the surface, a sliding-type packing face plate with locking mechanism like snap fit lock. The whole mechanism of installation with slide assembly, facilitate cleaning, repair and replacement is shown in Fig 5.

Although the foregoing description of the present invention has been shown and described with reference to particular embodiments and applications thereof, it has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the particular embodiments and applications disclosed. It will be apparent to those having ordinary skill in the art that a number of changes, modifications, variations, or alterations to the invention as described herein may be made, none of which depart from the spirit or scope of the present invention. The particular embodiments and applications were chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such changes, modifications, variations, and alterations should therefore be seen as being within the scope of the present invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.