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1. (WO2018197908) ENVIRONMENT CONTROL IN ELECTRONIC APPARATUS

Pub. No.:    WO/2018/197908    International Application No.:    PCT/GB2018/051150
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: H05K 7/20
Applicants: AMSCREEN GROUP LIMITED
Inventors: WHITEHEAD, Stephen
SHIRES, Jonathan
GREENWOOD, Gary
FRANCIS, Peter
Title: ENVIRONMENT CONTROL IN ELECTRONIC APPARATUS
Abstract:
An electronic apparatus has a heat-exchanger (100) within a housing (120) and arranged to exchange heat between internal and external fluids without direct contact between the fluids. The internal fluid circulates within the housing (120) and the external fluid is received from externally of the housing (120) and output to externally of the housing (120). Also within the housing (120) is a heater (202); impellers (101,102) for impelling fluids through the heat-exchanger (100); a controller (315) for controlling the heater (202) and the flow of fluids through the heat-exchanger (100); and temperature and humidity sensors (300-311). The controller (315) receives temperature and humidity data from the sensors (300-311); processes the data to indicate a current dew point within the housing (120); and compares the current dew point with a current location temperature at or adjacent the heat-exchanger (100). If the current location temperature is at or below the current dew point, the controller (315) controls the flow of fluids through the heat-exchanger (100) to raise the temperature at at least one location on the heat-exchanger (100) and/or activates the heat source to raise the temperature within the housing.