Patent ID: 8770493

Claim:
A system configured to provide controlled cooling of electronic equipment in an outdoor shelter in combination with an air conditioning (A/C) system powered by an AC power supply, the electronic equipment being powered by a DC supply, the system comprising: a blower subsystem comprising one or more blowers configured to be mounted to the outdoor shelter to draw exterior air into the outdoor shelter along a path of airflow that excludes components of an A/C unit including a condenser, a compressor, and an evaporator; a damper arrangement configured to be mounted at an air exhaust region of the outdoor shelter; and a controller powered by the DC supply and coupled to the blower subsystem, the damper arrangement, and the A/C system, the controller being configured to receive at least a first analog input signal associated with a shelter-interior temperature, a second analog input signal associated with a shelter-exterior temperature, and a plurality of alarm input signals, and configured to generate one or more first control signals, a second control signal, and a third control signal based on at least the first analog input signal, or the second analog input signal, or a plurality of alarm input signals, or a combination of thereof; wherein: the one or more first control signals respectively control an on/off operating state of the one or more blowers including rotational speeds of the one or more blowers; the second control signal controls opening and closing of the damper arrangement in correspondence with the on/off operating state of the one or more blowers; and the third control signal inhibits/activates the A/C system.