Patent ID: 9198329
Filing Date: 2015-11-24
Classification: H05K

Abstract:
1. A method in a cabinet for controlling the temperature inside the cabinet, which cabinet is comprised in a radio network node, said cabinet comprising a first set of electronic equipment, and a second set of electronic equipment, a first climate system and second climate system, which first and second climate system are each stand-alone systems and each includes a respective air moving device and a respective condenser unit, the condenser units being located outside the cabinet, and are arranged to transfer heat from an internal volume to an external volume of said cabinet, the method comprising: generating a first air flow, using a first air moving device of said first climate system, which first air flow substantially affects the first set of electronic equipment; generating a second air flow, using a second air moving device of the second climate system, which second air flow substantially affects the second set of electronic equipment; measuring a temperature within said internal volume using a temperature sensor; and individually controlling each of the respective air moving devices of said first climate system and said second climate system based on the measured temperature, such that the air within said internal volume is mixed and such that a third air flow is generated, substantially affecting both said first and said second set of electronic equipment to thereby obtain a substantially even temperature distribution within said internal volume of said cabinet; wherein the step of individually controlling each of the respective air moving devices of said first climate system and said second climate system includes the further steps of: increasing the speed of said first or said second air moving device in said first or second climate system; and decreasing the speed of the air moving device in the other climate system, whereby said third airflow is generated, adapted to mix the air within said internal volume of said cabinet; and wherein the step of individually controlling each of the respective air moving device of said first climate system and said second climate system is performed when the measured temperature within said internal volume of said cabinet is approximately +25 degrees Celsius or below.