FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
AND
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
“LOUVER ASSEMBLY FOR AIR COOLER”
I/We, Bajaj Electricals Limited, an Indian national, of 45/47, Veer Nariman Road, Fort, Mumbai- 400001, Maharashtra, India.
The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD OF INVENTION
The present invention generally relates to louvers for air coolers. In particular, the present invention relates to a louver assembly for an air cooler with improved air distribution of the air cooler.
BACKGROUND OF THE INVENTION
This section is intended to provide information relating to the field of disclosure and thus, any approach or functionality described herein should not be assumed to qualify as prior art merely by its inclusion in this section.
An air cooler comprises a blower assembly including a set of blades disposed within an enclosure. The set of blades rotate to generate an air flow in a direction coaxial with the fan blades. The airflow exits the enclosure through an outlet. Generally, a louver assembly is disposed at the outlet to direct or re-direct the exiting flow or air. The louver assembly typically comprises a set of slats which oscillate about a range of angles to direct air flow along a predefined direction. However, the slats oscillate such that all the slats point in the same direction at any given time, causing the air flow to be directed along a specific direction at a given time, resulting in discontinuous air flow. There is a requirement in the art for a louver assembly that can improve distribution of airflow from the outlet of an air cooler.
SUMMARY OF THE INVENTION
This section is intended to introduce one or more aspects and/or embodiments of the present disclosure in a simplified form and is not intended to identify any key advantages or features of the present disclosure.
In an aspect, the present invention provides a louver assembly for an air cooler, comprising: a first louver comprising a first plurality of slats, the first louver being capable of oscillating about a first vertical axis; a second louver comprising a second plurality of slats, the second louver being capable of oscillating about a second vertical axis; and a motor mechanism capable of driving the concurrent

oscillation of the first louver about the first vertical axis and the second louver about the second vertical axis, wherein the direction of the first vertical axis of oscillation and the second vertical axis of oscillation is opposite to each other.
In an aspect, the motor mechanism comprises: a swing motor; a driver gear coupled to the swing motor via a shaft, the driver gear is adapted to rotate based on rotation of the swing motor; a first driven gear meshed with the driver gear and adapted to rotate in an opposite direction to the driver gear; a second driven gear meshed with the driver gear and adapted to rotate in an opposite direction to the driver gear; and a third driven gear meshed with the second driven gear and adapted to rotate in the same direction as the driver gear.
In an aspect, the louver assembly comprises a first connecting link coupled to the first plurality of slats of the first louver and the first driven gear; and second connecting link coupled to the second plurality of slats of the second louver and the third driven gear.
In an aspect, the first connecting link is coupled to the first driven gear via a first lever; and the second connecting link is connected to the third driven gear via a second lever.
In an aspect, the first connecting link and the second connecting link oscillate laterally in opposite direction.
In an aspect, the first connecting link comprises a bracket adapted to couple with the first driven gear via a metal insert on the first driven gear to translate the rotary motion of the first driven gear to reciprocating motion of the first connecting link; and a link portion adapted to couple with the first plurality of slats of the first louver.
In an aspect, the second connecting link comprises a bracket adapted to couple with the third driven gear via a metal insert of the third driven gear to translate the rotary motion of the third driven gear to reciprocating motion of the second connecting link; and a link portion adapted to couple with the second plurality of slats of the second louver.

In an aspect, angle of the first plurality of slats in the first louver and in the second plurality of slats in the second louver can be varied independently.
In an aspect, the first plurality of slats in the first louver and the second plurality of slats in the second louver oscillate in the range of 5 to 50 degrees.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The present disclosure, both as to its organization and manner of operation, together with further objects and advantages, may best be understood by reference to the description, taken in connection with the accompanying drawings. These and other details of the present invention will be described in connection with the accompanying drawings, which are furnished only by way of illustration and not in limitation of the scope of the present disclosure.
FIG. 1 illustrates a schematic view of a louver assembly of an air cooler, according to an embodiment of the present invention;
FIG. 2 illustrates a detailed schematic view of a motor mechanism of the louver assembly of FIG.1, according to an embodiment of the present invention;
FIG. 3A illustrates a schematic view of a connecting link of the louver assembly of FIG. 1, according to an embodiment of the present invention; and
FIG. 3B illustrates a schematic view of a driven gear of the louver assembly of FIG. 1, according to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of one or more embodiments of the present disclosure. It will be apparent, however, that embodiments of the present disclosure may be practiced without these specific details. Several features described hereafter may each be used independently of one another or in any combination with other features. An individual feature may not address any of the problems discussed above or may address only some of the problems discussed above. Some of the problems discussed above may not be fully

addressed by any of the features described herein. Example embodiments of the present disclosure are described below, as illustrated in various drawings, in which same reference numerals refer to the same parts throughout the different drawings.
The present invention provides a louver assembly for an air cooler. The louver assembly is adapted to be arranged downstream of a fan of the air cooler. Specifically, the louver assembly is adapted to be disposed at an outlet of the air cooler and is adapted to direct or re-direct a stream of air exiting the air cooler, in a predefined direction. The louver assembly comprises a first louver, and a second louver. The louver assembly is disposed such that the first louver is arranged at a first portion of the outlet of the air cooler, and the second louver is arranged at a second portion of the outlet of the air cooler. In an embodiment, the first and second portions together cover the entire area of the outlet of the air cooler. In an embodiment, the first and second portions have equal surface areas. In an embodiment, the first and second portions have unequal surface areas. In an embodiment, the first and second portions are arranged about any one of vertical axes of the outlet of the air cooler, horizontal axes of the outlet of the air cooler, or combinations thereof. In a preferred embodiment, the first and second portions are arranged about vertical axes of the outlet of the air cooler. Specifically, the first louver is arranged about a first vertical axis, and the second louver is arranged about a second vertical axis that is parallel to and spaced apart from the first vertical axis.
The first louver comprises a first plurality of slats, and the second louver comprises a second plurality of slats. Each of the first plurality of slats is disposed about the first vertical axis, is disposed parallel to, and separated from the adjacent slat by a predefined distance. The first louver is capable of oscillating about the first vertical axis. Specifically, at least a slat of the first plurality of slats is capable of oscillating about the first vertical axis. In an embodiment, at least the slat of the first plurality of slats is capable of oscillating in the range of 5 to 50 degrees about the first vertical axis.
Similarly, each of the second plurality of slats is disposed about the second vertical axis, is disposed parallel to, and separated from the adjacent slat by a predefined distance. The second louver is capable of oscillating about the second

vertical axis. Specifically, at least a slat of the second plurality of slats is capable of oscillating about the second vertical axis. In an embodiment, at least the slat of the second plurality of slats is capable of oscillating in the range of 5 to 50 degrees about the second vertical axis.
In an embodiment, each slat comprises a passageway that is adapted to receive air from the outlet of the air cooler and direct it along any direction towards an exterior of the air cooler. In an embodiment, each of the first and second pluralities of slats comprise 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 slats.
The louver assembly comprises a motor mechanism capable of driving concurrent oscillation of the first and second louvers about their respective first and second vertical axes, such that the direction of oscillation of the first vertical axis and the direction of oscillation of the second vertical axis is opposite each other.
In an embodiment, the motor mechanism comprises a swing motor. In an embodiment, the motor mechanism comprises a driver gear. The driver gear is coupled to the swing motor via a shaft. The driver gear is adapted to rotate based on rotation of the swing motor. The motor mechanism further comprises a first driven gear, a second driven gear and a third driven gear. The driver gear is meshed with the first driven gear and independently the second driven gear. The first driven gear is adapted to rotate in an opposite direction to the driven gear. The second driven gear is adapted to rotate in an opposite direction to the driven gear. The third driven gear is meshed with the second driven gear and is adapted to rotate in the same direction as the driver gear.
In an embodiment, the louver assembly comprises a first connecting link coupled with the first plurality of slats of the first louver and the first driven gear. As the first driven gear rotates, the first plurality of slats is adapted to oscillate about the first vertical axis. In an embodiment, the first connecting link is coupled to the first driven gear via a first lever. In an embodiment, the first connecting link comprises a bracket adapted to couple with the first driven gear via a metal insert on the first driven gear. Specifically, the first lever of the first connecting link is coupled to the metal insert of the first driven gear via the bracket. As the first driven gear rotates, the link comprising the metal insert and the first lever operates such

that a linear distance between the metal insert and the first lever varies, causing the first lever to transfer the linear motion to the first connecting link. In other words, the rotary motion of the first driven gear is converted to reciprocating motion of the first connecting link. The first connecting link comprises a link portion adapted to couple with the first plurality of slats of the first louver. As a result, when the first connecting link reciprocates due to rotary motion of the first driven gear, the first plurality of slats are caused to oscillate about the first vertical axis.
In an embodiment, the louver assembly comprises a second connecting link adapted to couple the second plurality of slats of the second louver with the third driven gear. As the third driven gear rotates, the second plurality of slats is adapted to oscillate about the second vertical axis. In an embodiment, the second connecting link is coupled to the third driven gear via a second lever. In an embodiment, the second connecting link comprises a bracket adapted to couple with the third driven gear via a metal insert on the third driven gear. Specifically, the second lever of the second connecting link is coupled to the metal insert of the third driven gear via the bracket. As the third driven gear rotates, the link comprising the metal insert and the second lever operates such that a linear distance between the metal insert and the second lever varies, causing the second lever to transfer the linear motion to the second connecting link. In other words, the rotary motion of the third driven gear is converted to reciprocating motion of the second connecting link. The second connecting link comprises a link portion adapted to couple with the second plurality of slats of the second louver. As a result, when the second connecting link reciprocates due to rotary motion of the third driven gear, the second plurality of slats are caused to oscillate about the second vertical axis.
In an embodiment, the first connecting link and the second connecting link oscillate laterally in opposite direction. In an embodiment, angle of the first plurality of slats in the first louver and in the second plurality of slats in the second louver can be varied independently.
FIG. 1 illustrates a schematic view of a louver assembly 100 of an air cooler, according to an embodiment of the present invention. The louver assembly 100 comprises a first louver 102 comprising a first plurality of slats. The first louver

102 is capable of oscillating about a first vertical axis. The louver assembly 100 comprises a second louver 104 comprising a second plurality of slats. The second louver 104 is capable of oscillating about a second vertical axis. The first and second vertical axes are substantially parallel to one another.
The louver assembly 100 also comprises a motor mechanism 106 capable of driving concurrent oscillation of the first louver 102 about the first vertical axis and the second louver 104 about the second vertical axis. Further, the direction of oscillation of the first louver 102 and the second louver 104 are opposite to each other.
FIG. 2 illustrates a detailed schematic view of a motor mechanism 106 of the louver assembly 100, according to an embodiment of the present invention. Referring to FIGs. 1 and 2, the motor mechanism 106 comprises a swing motor 108. The motor mechanism 106 comprises a driver gear 110 coupled to the swing motor 108 via a shaft 112. The driver gear 110 is adapted to rotate based on rotation of the swing motor 108. A first driven gear 114 is meshed with the driver gear 110 and is adapted to rotate in a direction opposite the direction of rotation of the driver gear 110.
A third driven gear 118 is indirectly meshed with the driver gear 110 and is adapted to rotate in a direction same as the direction of rotation of the driver gear 110. The third driven gear 118 is meshed with the driver gear 110 via a second driven gear 116. The second driven gear 116 is meshed with the driver gear 110 and is adapted to rotate in a direction opposite the direction of rotation of the driver gear 110. The third driven gear 118 is meshed with the second driven gear 116 and is adapted to rotate in a direction opposite the direction of rotation of the second driven gear 116.
The louver assembly 100 comprises a first connecting link 120 coupling the first plurality of slats of the first louver 102 with the first drive gear 114. Further, the first connecting link 120 is coupled to the first driven gear 114 via a first lever 124.

The louver assembly 100 comprises a second connecting link 122 coupling the first plurality of slats of the first louver 104 with the third driven gear 118. Further, the second connecting link 122 is coupled to the third driven gear 118 via a second lever 126.
FIG. 3A illustrates a schematic view of a connecting link (120/122) of the louver assembly 100, according to an embodiment of the present invention.
FIG. 3B illustrates a schematic view of a driven gear (114/118) of the louver assembly 100, according to an embodiment of the present invention.
Referring to FIGs. 1 to 3B, the first connecting link 120 comprises a bracket 128 adapted to couple with the first driven gear via a metal insert 130 on the first driven gear 114 to translate the rotary motion of the first driven gear 114 to reciprocating motion of the first connecting link 120; and a link portion 132 adapted to couple with the first plurality of slats of the first louver 102.
The second connecting link 122 comprises a bracket 134 adapted to couple with the third driven gear 118 via a metal insert 136 of the third driven gear 118 to translate the rotary motion of the third driven gear 118 to reciprocating motion of the second connecting link 122; and a link portion 138 adapted to couple with the second plurality of slats of the second louver 104.
The first connecting link 120 and the second connecting link 122 oscillate laterally in opposite direction. Further, the angle of the first plurality of slats in the first louver 102 and in the second plurality of slats in the second louver 104 can be varied independently. The first plurality of slats in the first louver 102 and the second plurality of slats in the second louver 104 oscillate in the range of 5 to 50 degrees.
Thus, the louver assembly 100 allows for a wider range of angles where the air flow exiting the air cooler can be directed. As a result, the cooling effectiveness of the air cooler is improved.
While the preferred embodiments of the present disclosure have been described hereinabove, it may be appreciated that various changes, adaptations, and modifications may be made therein without departing from the spirit of the

disclosure and the scope of the appended claims. It will be obvious to a person skilled in the art that the present disclosure may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments may to be considered in all respects only as illustrative and not restrictive.
LIST OF REFERENCE NUMERALS
100 Louver Assembly
102 First Louver
104 Second Louver
106 Motor Mechanism
108 Swing Motor
110 Driver Gear
112 Shaft
114 First Driven Gear
116 Second Driven Gear
118 Third Driven Gear
120 First Connecting Link
122 Second Connecting Link
124 First Lever
126 Second Lever
128 Bracket
130 Metal Insert
132 Link Portion
134 Bracket
136 Metal Insert
138 Link Portion

I/We Claim:
1. A louver assembly (100) for an air cooler, comprising:
- a first louver (102) comprising a first plurality of slats, the first louver (102) being capable of oscillating about a first vertical axis;
- a second louver (104) comprising a second plurality of slats, the second louver (104) being capable of oscillating about a second vertical axis; and
- a motor mechanism (106) capable of driving the concurrent oscillation of the first louver (102) about the first vertical axis and the second louver (104) about the second vertical axis, wherein the direction of the first vertical axis of oscillation and the second vertical axis of oscillation is opposite to each other.
2. The louver assembly (100) as claimed in claim 1, wherein the motor mechanism
(106) comprises:
- a swing motor (108);
- a driver gear (110) coupled to the swing motor (108) via a shaft (112),
the driver gear (110) is adapted to rotate based on rotation of the swing
motor (108); - a first driven gear (114) meshed with the driver gear (110) and adapted
to rotate in an opposite direction to the driver gear (110); - a second driven gear (116) meshed with the driver gear (110) and adapted
to rotate in an opposite direction to the driver gear (110); and - a third driven gear (118) meshed with the second driven gear (116) and
adapted to rotate in the same direction as the driver gear (110).
3. The louver assembly (100) as claimed in claim 2, comprising:
- a first connecting link (120) coupled to the first plurality of slats of the first louver (102) and the first driven gear (114); and

- a second connecting link (122) coupled to the second plurality of slats of the second louver (104) and the third driven gear (118).
4. The louver assembly (100) as claimed in claim 3, wherein the first connecting link (120) is coupled to the first driven gear (114) via a first lever (124); and the second connecting link (122) is connected to the third driven gear (118) via a second lever (126).
5. The louver assembly (100) as claimed in claim 3, wherein the first connecting link (120) and the second connecting link (122) oscillate laterally in opposite direction.
6. The louver assembly (100) as claimed in claim 3, wherein the first connecting link (120) comprises:
- a bracket (128) adapted to couple with the first driven gear via a metal insert (130) on the first driven gear (114) to translate the rotary motion of the first driven gear (114) to reciprocating motion of the first connecting link (120); and
- a link portion (132) adapted to couple with the first plurality of slats of the first louver (102).
7. The louver assembly (100) as claimed in claim 3, wherein the second connecting
link (122) comprises:
- a bracket (134) adapted to couple with the third driven gear (118) via a metal insert (136) of the third driven gear (118) to translate the rotary motion of the third driven gear (118) to reciprocating motion of the second connecting link (122); and
- a link portion (138) adapted to couple with the second plurality of slats of the second louver (104).

8. The louver assembly (100) as claimed in claim 1, wherein angle of the first plurality of slats in the first louver (102) and in the second plurality of slats in the second louver (104) can be varied independently.
9. The louver assembly (100) as claimed in claim 1, wherein the first plurality of slats in the first louver (102) and the second plurality of slats in the second louver (104) oscillate in the range of 5 to 50 degrees.