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. In particular, the present invention relates to a louver assembly for an air cooler with improved air distribution.
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 is capable of oscillating about a first vertical axis; a second louver comprising a second plurality of slats, the second louver is capable of oscillating about a second vertical axis; and a motor mechanism 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 oscillation of the first plurality of slats in the first louver, and the second plurality of slats in the second louver is opposite to each other.
In an aspect, the motor mechanism comprises: a swing motor; a cam connected to the swing motor via a shaft to translate the rotary motion of the swing motor to reciprocating motion of the cam; a follower connected to the cam; a first connecting link connected to the first louver; and a second connecting link connected to the second louver.
In an aspect, the first connecting link is connected to the first plurality of slats of the first louver; and the second connecting link is connected to the second plurality of slats of the second louver.
In an aspect, an end of the first connecting link is connected with an end of the second connecting link via one or more levers.
In an aspect, the follower is connected to the plurality of slats of the first louver or the second louver.
In an aspect, the first connecting link and the second connecting link oscillate laterally in opposite direction.
In an aspect, the follower comprises a groove adapted to couple with the cam and a link portion adapted to couple with the plurality of slats of the first louver.
In an aspect, the motor mechanism comprises: a swing motor; a first cam and a second cam independently connected to the swing motor via a shaft to translate the rotary motion of the swing motor to reciprocating motion of the first cam and the second cam; a first follower connected to the first cam; and a second follower connected to the second cam.
In an aspect, the reciprocating motion of the first cam and the reciprocating motion of the second cam is in opposite direction.
In an aspect, the first follower is connected to the plurality of slats of the first louver; and the second follower is connected to the plurality of slats of the second louver.

In an aspect, the first follower comprises a groove adapted to couple with the first cam and a link portion adapted to couple with the first plurality of slats of the first louver; and the second follower comprises a groove adapted to couple with the second cam and a link portion adapted to couple with the second plurality of slats of the second louver.
In an aspect, the first cam and the second cam are integrated dual cams.
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 with respect to their respective axis.
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 schematic view of a follower of the louver assembly of FIG. 1, according to an embodiment of the present invention; and
FIG. 3 illustrates a detailed schematic view of a louver assembly, according to another embodiment of the present invention;
FIG. 4A illustrates a schematic view of a first follower of the louver assembly of FIG. 3, according to an embodiment of the present invention; and
FIG. 4B illustrates a schematic view of a second follower of the louver assembly of FIG. 3, 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 louver about their respective first and second vertical axes, such that the direction of oscillation of the first plurality of slats in the first louver, and the second plurality of slats in the second louver is opposite to each other.
The motor mechanism of the louver assembly comprises a swing motor, and a cam connected to the swing motor via a shaft. The cam is kinematically coupled to the swing motor, such that rotation of the swing motor causes a movement of the cam. In an embodiment, rotation of the swing motor causes a rotation of the cam. The motor mechanism also comprises a follower coupled to the cam. The rotation of the cam causes the follower to move linearly. In an embodiment, the follower comprises a groove adapted to couple with the cam. Specifically, the groove is adapted to accommodate the cam therein. As the cam rotates, the groove is adapted to move such that a locus of the groove is circular. The follower further comprises

a link portion that is coupled to the grove and moves linearly, corresponding to circular motion of the groove. The link portion is further adapted to couple with the first plurality of slats of the first louver. As the link portion moves linearly, the first plurality of slats oscillate accordingly about the first vertical axis. In an embodiment, the link portion of the follower is adapted to couple with the first plurality of slats at a top portion of the first louver.
In an embodiment, the motor mechanism comprises first and second connecting links. The first connecting link is connected to the first plurality of slats. In an embodiment, the first connecting link is connected to the first plurality of slats at the bottom portion of the first louver. The second connecting link is connected to the second plurality of slats. In an embodiment, the second connecting link is connected to the second plurality of slats at the bottom portion of the second louver. In an embodiment, the end of the first connecting link is connected with an end of the second connecting link via one or more levers. In an embodiment, the one or more levers transfer motion from the first connecting link to the second connecting link. In an embodiment, when the link portion of the follower causes the oscillation of the first louver, the first connecting link connected to the first louver also moves. The movement of the first connecting link is transferred to the second connecting link via the one or more levers. This causes the second connecting link to move corresponding to the first connecting link, and thereby move the second louvers.
In an alternate embodiment, the link portion is further adapted to couple with the second plurality of slats of the second louver. As the link portion moves linearly, the second plurality of slats oscillate accordingly about the second vertical axis. In an embodiment, the link portion of the follower is adapted to couple with the second plurality of slats at a top portion of the second louver. In such an embodiment, when the link portion of the follower causes the oscillation of the second louver, the second connecting link connected to the second louver also moves. The movement of the second connecting link is transferred to the first connecting link via the one or more levers. This causes the first connecting link to move corresponding to the second connecting link, and thereby move the first louvers.

Therefore, the movement of the single follower by the cam facilitates oscillation of the first and second louvers. In an embodiment, the first and second link are connected such that the first and second louvers respectively oscillate in opposite directions.
In another embodiment, the motor mechanism comprises first and second cam. The first and second cams are independently connected to the swing motor via the shaft. In an embodiment, the first and second cams are an integrated dual cam. Specifically, the first and second cams are kinematically coupled to the swing motor, such that rotation of the swing motor causes a movement of the first and second cams. In an embodiment, rotation of the swing motor causes a rotation of the first and second cams.
The motor mechanism also comprises a first follower that is coupled to the first cam. As the first cam is moved by the swing motor, the consequent movement of the first cam causes the first follower to move linearly. In an embodiment, the first follower comprises a groove adapted to couple with the first cam. Specifically, the groove is adapted to accommodate the first cam therein. As the first cam is moved by the swing motor, the groove is adapted to move such that a locus of the groove is circular. The first follower further comprises a link portion that is coupled to the groove and moves linearly, corresponding to circular motion of the groove. The link portion is further adapted to couple with the first plurality of slats of the first louver. As the link portion moves linearly, the first plurality of slats oscillate accordingly about the first vertical axis.
Similarly, the motor mechanism also comprises a second follower that is coupled to the second cam. As the second cam is moved by the swing motor, the consequent movement of the second cam causes the second follower to move linearly. In an embodiment, the second follower comprises a groove adapted to couple with the second cam. Specifically, the groove is adapted to accommodate the second cam therein. As the second cam is moved by the swing motor, the groove is adapted to move such that a locus of the groove is circular. The second follower further comprises a link portion that is coupled to the groove and moves linearly, corresponding to circular motion of the groove. The link portion is further adapted

to couple with the second plurality of slats of the second louver. As the link portion moves linearly, the second plurality of slats oscillate accordingly 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 the 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 comprising a swing motor 108 and a cam 110 connected to the swing motor 108. The cam 110 is kinematically coupled to a shaft 112 of the swing motor 108. As the swing motor 108 rotates, the cam 110 is also adapted to rotate. The motor mechanism 106 also comprises a follower 114 coupled to the cam 110. The follower 114 is coupled with at least a slat on top of the first louver 102. It is to be noted that the follower 114 can alternatively be coupled with at least a slat on top of the second lover 104.
The motor mechanism 106 further comprises a first connecting link 116 and a second connecting link 118. The first connecting link 116 is connected to the first plurality of slats. Further, the first connecting link 116 is connected to the first plurality of slats at the bottom portion of the first louver 102. The second connecting link 118 is connected to the second plurality of slats. Further, the second connecting link 118 is connected to the second plurality of slats at the bottom portion of the second louver 104. The end of the first connecting link 116 is connected with an end of the second connecting link 118 via one or more levers 120. The one or more levers 120 transfers motion from the first connecting link 116 to the second

connecting link 118. When the link portion 124 of the follower 114 causes the oscillation of the first louver 102, the first connecting link 116 connected to the first louver 102 also moves. The movement of the first connecting link 116 is transferred to the second connecting link 118 via the one or more levers 120. This causes the second connecting link 118 to move corresponding to the first connecting link 116, and thereby moves the second louvers 104. The first connecting link 116 and the second connecting link 118 oscillate laterally in opposite direction.
FIG. 2 illustrates a schematic view of the follower 114, according to an embodiment of the present invention. Referring to FIGs. 1 and 2, the follower 114 comprises a groove 122 coupled with the cam 110. The follower 114 further comprises a link portion 124 that is coupled to the groove 122 and moves linearly, corresponding to a circular motion of the groove 122. The link portion 124 is further coupled with the first plurality of slats of the first louver 102. As the link portion 124 moves linearly, the first plurality of slats oscillates accordingly about the first vertical axis. The link portion 124 of the follower 114 is coupled with the first plurality of slats at a top portion of the first louver 102.
FIG. 3 illustrates a schematic view of a louver assembly 101 of an air cooler, according to another embodiment of the present invention. The louver assembly 101 is similar to the louver assembly 100 of FIG. 1. Common components between the louver assembly 101 and the louver assembly 100 are referenced using the same reference numerals. However, the louver assembly 101 comprises a motor assembly 107 comprising a first cam 126 and a second cam 128. The first and second cams 126, 128 are independently connected to the swing motor 108 via the shaft 112. The first and second cams 126, 128 are an integrated dual cam. Specifically, the first and second cams 126, 128 are kinematically coupled to the swing motor 108, such that rotation of the swing motor 108 causes rotation of the first and second cam 126, 128. The motor mechanism 107 comprises a first follower 130 that is coupled to the first cam 126, and a second follower 132 that is coupled to the second cam 128.
FIGs. 4A and 4B illustrate schematic views of the first follower 130, and the second follower 132, respectively, according to an embodiment of the present invention. Referring to FIGs. 3 and 4A, as the first cam 126 is moved by the swing

motor 108, the consequent movement of the first cam 126 causes the first follower 130 to move linearly. The first follower 130 comprises a groove 134 coupled with the first cam 126. The first follower 130 further comprises a link portion 136 that is coupled to the groove 134 and moves linearly, corresponding to motion of the groove 134. The link portion 136 is further coupled with the first plurality of slats of the first louver 102. As the link portion 136 moves linearly, the first plurality of slats oscillates accordingly about the first vertical axis.
Referring to FIGs. 3 and 4B, as the second cam 128 is moved by the swing motor 108, the consequent movement of the second cam 128 causes the second follower 132 to move linearly. The second follower 132 comprises a groove 138 coupled with the second cam 128. The follower 132 further comprises a link portion 140 that is coupled to the groove 138 and moves linearly, corresponding to motion of the groove 138. The link portion 140 is further coupled with the second plurality of slats of the second louver 104. As the link portion 140 moves linearly, the second plurality of slats oscillates accordingly about the second vertical axis.
Referring to FIGs, 1 to 4B, 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.
Thus, the louver assembly 100, 101 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
101 Louver Assembly
102 First Louver
104 Second Louver
106 Motor Mechanism
107 Motor Mechanism
108 Swing Motor
110 Cam
112 Shaft
114 Follower
116 First Connecting Link
118 Second Connecting Link
120 One or more Levers
122 Groove
124 Link Portion
126 First Cam
128 Second Cam
130 First Follower
132 Second Follower
134 Groove
136 Link Portion
138 Groove
140 Link Portion

I/We Claim:
1. A louver assembly (100, 101) for an air cooler, comprising:
- a first louver (102) comprising a first plurality of slats, the first louver (102)
capable of oscillating about a first vertical axis; - a second louver (104) comprising a second plurality of slats, the second
louver (104) capable of oscillating about a second vertical axis; and - a motor mechanism (106, 107) 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 oscillation of the first plurality of slats in the first louver (102), and the second plurality of slats in the second louver (104) are 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 cam (110) connected to the swing motor (108) via a shaft (112) to translate
the rotary motion of the swing motor (108) to reciprocating motion of the
cam (110); - a follower (114) connected to the cam (110); - a first connecting link (116) connected to the first louver (102); and - a second connecting link (118) connected to the second louver (104).
3. The louver assembly (100) as claimed in claim 2, wherein the first connecting
link (116) is connected to the first plurality of slats of the first louver (102); and
the second connecting link (118) is connected to the second plurality of slats of
the second louver (104).

4. The louver assembly (100) as claimed in claim 2, wherein an end of the first connecting link (116) is connected with an end of the second connecting link (118) via one or more levers (120).
5. The louver assembly (100) as claimed in claim 2, wherein the follower (114) is connected to the plurality of slats of the first louver (102) or the second louver (104).
6. The louver assembly (100) as claimed in claim 4, wherein the first connecting link (116) and the second connecting link (118) oscillate laterally in opposite direction.
7. The louver assembly (100) as claimed in claim 2, wherein the follower (114) comprises a groove (122) adapted to couple with the cam (110) and a link portion (124) adapted to couple with the plurality of slats of the first louver (102).
8. The louver assembly (101) as claimed in claim 1, wherein the motor mechanism (107) comprises:
- a swing motor (108);
- a first cam (126) and a second cam (128) independently connected to the swing motor (108) via a shaft (112) to translate the rotary motion of the swing motor (108) to reciprocating motion of the first cam (126) and the second cam (128);
- a first follower (130) connected to the first cam (126); and
- a second follower (132) connected to the second cam (128).
9. The louver assembly (101) as claimed in claim 8, wherein the reciprocating
motion of the first cam (126) and the reciprocating motion of the second cam
(128) is in opposite direction.

10. The louver assembly (101) as claimed in claim 8, wherein the first follower (130) is connected to the plurality of slats of the first louver (102); and the second follower (132) is connected to the plurality of slats of the second louver (104).
11. The louver assembly (101) as claimed in claim 8, wherein the first follower (130) comprises a groove (134) adapted to couple with the first cam (126) and a link portion (136) adapted to couple with the first plurality of slats of the first louver (102); and the second follower (132) comprises a groove (138) adapted to couple with the second cam (128) and a link portion (140) adapted to couple with the second plurality of slats of the second louver (104).
12. The louver assembly (101) as claimed in claim 8, wherein the first cam (126) and the second cam (128) are an integrated dual cam.
13. 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.
14. 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 with respect to their respective axis.