Claims:We Claim;
1. Present improved evaporative air cooler, wherein said evaporative air cooler comprises of;

• Tank 04,
• Pump 05
• Water flow distribution tray 06,
• Evaporative Cooling pad 07,
• Water guide tray 08,
• Instant cooling pack 09,
• Shallow tank portion 10,
• Air outlet area 11,
• evaporative cooler body 12

wherein;

said evaporative cooler body 12 mainly comprises the front panel 02, back panel 03; said tank 04 is located within the evaporative cooler body 12 beneath the front panel 02 or back panel 03; the Pump 05 is located within the shallow tank portion 10 along with instant cooling packs 09; the tank 04 is more preferably constructed from injection molded plastic material ; said Shallow tank portion 10 is located within the said tank 04 along with the Instant cooling pack 09, said instant cooling pack 09 are made up of phase change material that includes but does not limits to the use of hydroxyethyl cellulose, vinyl coated silica gel or alike material and are portable; said pump 05 is located between the said front panel 02 and back panel 03; further the Water flow distribution tray 06 is provided for uniform distribution of water over evaporative cooling pads 07 for uniform wetting of evaporative cooling pads 07; the water guide tray 08 is located beneath said evaporative cooling pads 07; the cooled air delivers through air outlet area 11.

Dated this 2nd day of October, 2017

Gopi Trivedi (Ms)
Authorized Agent of applicant

To,
The Controller,
The Patent office
At Mumbai

, Description:FORM -2

The Patent’s Act, 1970
(39 of 1970)

COMPLETE SPECIFICATION
(Section: 10, Rule: 13)

AN IMPROVED EVAPORATIVE AIR COOLER

Symphony Limited,
A Company Incorporated under the Indian Companies Act
having address at
Symphony house FP-12-TP-50 Bodakdev, Off S. G. Highway, Ahmedabad, Gujarat, India-380054

The following specification particularly describe the invention and the manner in which it is to be performed:
FIELD OF INVENTION:

The present invention relates to an improved evaporative air cooler. In particular the present invention relates to improved evaporative air cooler that provides cooled filtered air by evaporation and heat transfer to cold water thereby reducing the temperature of the water stored in the cooler and also maintains the temperature of water at the desired level and thus increases the cooling efficiency of the evaporative cooler.

BACKGROUND OF INVENTION:

In hot and humid countries like India, where the summers are hot and dry evaporative coolers are necessary that provides ambient temperature and cooling. An evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling works by exploiting water's large enthalpy of vaporization. The temperature of dry air can be dropped through the phase transition of liquid water-to-water vapor (evaporation). 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. Typically, such coolers are used for residential installation or for industrial installation.

The principles of evaporative air-cooling have been exploited for several decades by people of many countries to obtain relief from uncomfortably warm environments. Air coolers are more effective in dry, hot and tropical locations. Present day air coolers typically comprise of a body, a water tank, fibre pads of different possible materials, air moving device (axial or centrifugal or cross flow fans) and water circulation system. A motorized air-moving device mounted within the body of the air cooler — with fiber pads mounted on at least one of the sides of the air cooler blows the cool air from the air outlet, usually at front or top of the air cooler. The loosely woven fibers of the fiber pads are preferably made of wood shavings or cellulose.

However the pads of woven fibers, wood shavings or cellulose does not change the phase of the pads form hot to cold or does not reduce the temperature of the water stored in the cooler and are not capable of chilling or providing cooled water instantly under the evaporative air cooler. Conventional pads of the evaporative cooler does not consist of the phase change material and does not provide instant cooling of the water and thereby fails to provide instant cooling of air.

PRIOR ART AND ITS DISADVANTAGES:

• US patent application numbered US4045523A relates to an evaporative cooler with superimposed pad assemblies adapted to provide for efficient operation of an evaporative cooler having substantially greater elevation and corresponding area, than conventional evaporative coolers of a comparable horizontal cross section, wherein progressive redistribution of water from rearward lower portions of superimposed pad assemblies toward upper inlet sides of the respective pad assemblies provides for great cooling capacity in proportion to the horizontal cross section of a cooler. The disclosure also including details of disposable pad assemblies for superimposed disposition relative to each other in an evaporative cooler in spaced relation to an inlet louver grill thereof. The disclosure being additionally related to the normal operation of superimposed evaporative cooler pad assemblies to prevent thinning of the saturated pad area of evaporative cooler pads near their lower portions in response to air flow from the inlet to the outlet sides of such pad assemblies. Further the disclosure relates to one standard size of evaporative cooler pad for coolers of various CFM capacities. The disclosure also relates to an evaporative cooler having means for opening the top thereof directly above the evaporative cooler pads and their respective water receiving troughs so as to provide for visual inspection of the flow of water into said troughs whereby proper adjustments may be made so that water is uniformly distributed to the troughs and the various evaporative cooler pads of the evaporative cooler.
• However the cited prior art does not provide the cooler that instantly cools the water stored and thus also does not provide instantly cooled air. Further the water is not pre-chilled, and the cooling is only through evaporation and not additionally through sensible cooling, that makes the cooling process slow and decreases overall cooling efficiency of the cooler and hence is not efficient.

• Another US patent application numbered US5966953A relates to a multi-stage distribution and return control system for use in an evaporative cooling system including a drip conductor, a plurality of cooling cells along which water from the drip conductor passes and a gutter there below, including a tank, a conduit for conveying fresh water to the tank and a valve for regulating flow there through, a pump within the tank, a conduit for conveying water from the pump to the drip conductor, a conduit for conveying water from the gutter to the tank; high, mid and low-level switches and a float for movement between the switches, and a control system which when cooling is desired opens the valve for conveying fresh water to the tank until the float engages the mid-level switch and for starting the pump until the float engages the low-level switch, stopping the pump until water fills the tank again to the level defined by the mid-level switch and, moreover, when enough water is evaporated from the cooling cells, and the water level falls below the mid-level switch opening the valve again filling the tank to the level of the mid-level switch and, moreover, turning off the pump and valve when the temperature reaches the predetermined, desirable low level and, moreover, when water returning from the cooling cells is of sufficient volume to activate the high-level switch starting the pump until the float deactivates the low-level switch at which time the pump is turned off.
• However, the said prior art refers to the evaporative cooling section with multiple cooling pads, wherein the cooling pads does not provide instant chilling of the water and thus also fails to provide instant cooled air. Further the water is not pre-chilled, and the cooling is only through evaporation and not additionally through sensible cooling, that makes the cooling process slow and decreases overall cooling efficiency of the cooler and hence is not efficient.

DISADVANTAGES OF PRIOR ART:

The existing evaporative air coolers suffer from all or at least one of the following disadvantages:

1. None of them provides immediate cooling of the water stored in the cooler and thereby also fails to provide sensible cooling of air in addition to evaporative cooling.

2. Many of them uses heat exchangers to generate cool air which incurs the extra cost for installing heat exchangers and also requires more power consumption and hence are not energy efficient.

3. None of them provides the evaporative cooler that uses Instant cooling packs to immediately chill the water stored in the cooler.

Therefore, there is an unmet need of the improved evaporative air cooler that suffices the need of immediately providing chilled cooled air and that further obviates the problems of prior art.

OBJECTS OF INVENTION:

The main object of the present invention is to provide an improved evaporative air cooler.

Another object of the present invention is to provide an improved evaporative air cooler that provides cooled filtered air by reducing the temperature of the water stored in the cooler.

Yet another object of the present invention is to provide an improved evaporative air cooler that maintains the temperature of water at the desired level and thereby increases the cooling efficiency of the evaporative cooler.

Yet another object of the present invention is to provide an improved evaporative air cooler that is energy efficient.

Yet another object of the present invention is to provide an improved evaporative air cooler that is cost effective.

Yet another object of the present invention is to provide an improved evaporative air cooler that obviates the problems of prior art.

SUMMARY OF THE INVENTION:

The present invention provides an improved evaporative air cooler; wherein said improved evaporative air cooler provides immediately cooled and chilled air delivery by cooling the water stored in the tank through the means of chilling pads of phase change material. Said pads are portable and are chilled in refrigerator prior to the use in the present invention. This utilizes less power consumption and also the present invention reduces evaporation of water and thus leads to conservation of energy and water.
BREIF DESCRIPTION OF DRAWINGS:

Fig.1 : Shows the present Improved Evaporative Air Cooler
Fig. 2 : Shows the fragmented view of the present improved evaporative Air cooler.

Meaning of reference numerals of component parts of the present Improved Evaporative Air Cooler:

01 : Present Improved Evaporative Air Cooler
02 : Front panel
03 : Back panel
04 : Tank
05 : Pump
06 : Water flow distribution tray
07 : Evaporative Cooling pad
08 : Water guide tray
09 : Instant cooling packs
10 : Shallow tank portion
11 : Air outlet area
12 : Evaporative cooler body

DETAILED DESCRIPTION OF INVENTION:

The embodiment of the present invention is to provide an improved evaporative air cooler 01that facilitates in reducing the temperature of the water stored in the evaporative cooler and thereby facilitates in immediate chilling of stored water and thus provides cool, chilled, fresh air. It further eliminates the use of heat exchangers to reduce the temperature which thereby utilizes less power and is thus energy efficient.

Referring to Fig. 1 and Fig. 2; present invention 01 mainly comprises of Evaporative cooler body 12 which further comprises of;

• Front panel 02,
• Back panel 03,
• Tank 04,
• Pump 05
• Water flow distribution tray 06,
• Evaporative Cooling pad 07,
• Water guide tray 08,
• Instant cooing packs 09,
• Shallow tank portion 10,
• Air outlet area 11,

Said evaporative cooler body 12 mainly comprises the front panel 02, back panel 03. Said tank 04 is located within the evaporative cooler body 12 beneath the front panel 02 or back panel 03. The Pump 05 is located within the shallow tank portion 10 along with instant cooling packs 09.

Said instant cooling packs 09 is made up of phase change material that includes but does not limits to the use of hydroxyethyl cellulose, vinyl coated silica gel or alike material and are portable. Said pump 05 is provided for pumping water from water tank 04 to water flow distribution tray 06 and is located between the said front panel 02 and back panel 03 as shown in Fig. 2. Further the water flow distribution tray 06, is provided for uniform distribution of water over evaporative cooling pads 07 for uniform wetting of evaporative cooling pads 07 and thereby facilitates in providing high cooling efficiency, less salt deposition on the evaporative cooling pads 07 and thereby increases the shelf life of said evaporative cooling pads 07. The water guide tray 08 is located beneath said evaporative cooling pads 07 and collects the water dripping from evaporative cooling pads 07, and further water guide tray the collected water smoothly over the inner surface of the tank rather than falling freely in the tank and thus utilizes less water compared to prior art and is thus energy efficient. Said air outlet area 11, is provided for the delivery of cooled air.

WORKING OF INVENTION:

The working of the present invention an improved evaporative air cooler 01 is described herein below:

For the working of the present improved evaporative air cooler 01 start the power supply to the evaporative air cooler. Said instant cooling pack 09 made up of the phase change material are cooled and recharged in the refrigerator and are than placed into the tank 04. Said instant cooling pack 09 reduces the temperature of the water stored in the tank using the latent heat of changing the temperature of the said phase change material. Further latent heat being higher in quantum the chilling of the water stored in the tank remains cool and chilled for sustainably longer duration. .The temperature of air reduces due to two phenomena: (a) adiabatic process where water gains the latent heat by evaporating and thereby losing sensible heat and, (b) further air loses sensible heat due to direct heat transfer between air and cooled water. Said chilled water stored in the tank is circulated through the said pump 05 and is distributed over the evaporative cooling pads 07 through the water distribution system 06. Cooled and chilled air is delivered to the user by said air outlet area 11.

Having described what is considered the best from presently contemplated for embodying the present invention, various alterations, modifications, and/or alternative applications of the invention for any system will be promptly apparent to those skilled in the art. Therefore it is to be understood that the present invention is not limited to the practical aspects of the actual preferred embodiments hereby described and that any such modifications and variations must be considered as being within the scope and spirit of this invention, as described in the description of invention above.

ADVANTAGES OF PRESENT INVENTION:

The present invention has many advantages over the prior art.

1) It provides immediate cooling of water and thereby provides cooled and chilled air.
2) It reduces the temperature of the water stored in the tank for substantially longer time duration and thus efficiently and constantly delivers cooled and chilled air.
3) The instant cooling pack of the present invention are portable and are user friendly.