Lid assembly for a container

1 . A lid assembly ( 100 ) for a container ( 102 ), comprising

a lid ( 202 );

a fluid control flow chamber ( 204 ) having a discharge opening ( 206 ) on an upper surface of the lid ( 202 ); and

at least one air tunnel ( 208 ) passing through a connection slot ( 212 ) to the fluid control flow chamber ( 204 ), the at least one air tunnel ( 208 ) having a first end ( 208 - 1 ) disposed in the fluid control flow chamber ( 204 ), and a second end ( 208 - 2 ) passing through the lid ( 202 ) such that the second end ( 208 - 2 ) is disposed outside the lid ( 202 ),

wherein the second end ( 208 - 2 ) of the at least one air tunnel ( 208 ) directs external air to the first end ( 208 - 1 ) of the at least one air tunnel ( 208 ),

wherein the fluid control flow chamber ( 204 ) mixes the external air directed to the first end ( 208 - 1 ) of the at least one air tunnel ( 208 ) with a liquid discharged from the container ( 102 ), when a suction pressure is generated in the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ),

wherein the fluid control flow chamber ( 204 ) comprises therein a spiral tube ( 702 ) having a plurality of curved parts ( 704 ) to increase mixing area when the liquid passes through the spiral tube ( 702 ) towards the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ), the spiral tube ( 702 ) comprising:

a proximal end ( 702 - 1 ) connected to a fluid entrance slot ( 514 ) of the fluid control flow chamber ( 204 ), and

a distal end ( 702 - 2 ) connected to the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ), and

wherein the spiral tube ( 702 ) comprises a plurality of stepped portions ( 706 ) with reduced diameters to increase fluid pressure and enhance cooling as the liquid flows through the spiral tube ( 702 ) towards the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ).

2 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the fluid control flow chamber ( 204 ) comprises a plurality of holes ( 214 ) to control flow of the liquid discharged from the container ( 102 ) to flow towards the discharge opening ( 206 ).

3 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the first end ( 208 - 1 ) of the at least one air tunnel ( 208 ) is disposed in the fluid control flow chamber ( 204 ) to introduce external air into the fluid control flow chamber ( 204 ) along a predefined path designed to enhance cooling efficiency, and wherein the second end ( 208 - 2 ) of the at least one air tunnel ( 208 ) is disposed outside the lid ( 202 ) and is configured to draw in external air when a suction pressure is applied in at the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ).

4 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the fluid control flow chamber ( 204 ) is integrally formed within the lid ( 202 ), such that boundaries of the fluid control flow chamber ( 204 ) are molded as part of the lid ( 202 ).

5 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the at least one air tunnel ( 208 ) is positioned beneath the upper surface of the lid ( 202 ).

6 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the fluid entrance slot ( 514 ) is configured to receive the liquid discharged from the container ( 102 ), the fluid entrance slot ( 514 ) receiving the liquid from a liquid delivery tube ( 502 ) having a curved part ( 504 ) adapted to pass the liquid into the fluid control flow chamber ( 204 ) when suction pressure is generated in the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ).

7 . The lid assembly ( 100 ) as claimed in claim 1 , wherein the spiral tube ( 702 ) comprises a plurality of curved parts ( 704 ) comprises a series of spaced bubble-forming apertures distributed along the length of the spiral tube ( 702 ) to facilitate additional mixing and enhance cooling efficiency when the liquid passes through the spiral tube ( 702 ) towards the discharge opening ( 206 ) of the fluid control flow chamber ( 204 ).