Patent ID: 11934236
Assignee: SWITCH, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An air conditioning apparatus that receives heated air and emits cooled air into a cabinet cluster containing electronic equipment with equipment fan modules therein and is powered by one of grid power and a back-up generator, the air conditioning apparatus including:
a heat exchange unit containing an exhaust fan that emits heat from the heated air as the vented air, thereby allowing return air to pass through a return damper;
an outside air inlet that allows outside air to pass therethrough;
a filter chamber, the filter chamber including an air intake area coupled to the return damper of the heat exchange unit and the outside air inlet, the air intake area being configurable to receive at least one of the return air and the outside air, as well as a mixture of the return air and the outside air, the filter chamber providing filtered air; and
a cooling unit coupled to the filter chamber that creates an air cooling area over which the filtered air passes to create the cooled air, the cooling unit including:
a cooling unit fan operable to push the filtered air through the air cooling area and into the cabinet cluster, wherein one or more of said exhaust fan and said cooling unit fan is configured with a weighted rotor assembly for storing angular kinetic energy during rotation of the one or more of said exhaust fan and said cooling unit fan, wherein said weighted rotor assembly is associated with a means to generate electricity for continuous operation of variable frequency drive circuits of said exhaust fan and said cooling unit fan, the stored energy being sufficient to continue powering variable frequency drive circuits of said exhaust fan and said cooling unit fan, and to continue delivering at least a predetermined flow of cooled air from said cooling area into said cabinet cluster for an interim period between loss of the grid power to said air conditioning apparatus and the back-up generator coming on-line.