Detecting a fouled air filter in a computer equipment enclosure that includes an air filter, a supply plenum connecting the air filter and the computer equipment enclosure, a fan operating at a current fan speed, and a filter monitoring module connected for data communications to a management module. Detecting a fouled air filter according to embodiments of the present invention includes calculating, by the filter monitoring module, a pressure differential across the air filter; determining, for the current fan speed by the filter monitoring module in dependence upon a pressure differential profile for the air filter, whether the calculated pressure differential across the air filter exceeds a predetermined threshold value; and if the calculated pressure differential across the air filter exceeds the predetermined threshold value, reporting, by the filter monitoring module to the management module, that the calculated pressure differential across the air filter exceeds the predetermined threshold value.

Detecting A Fouled Air Filter In A Computer Equipment Enclosure

PROBLEM TO BE SOLVED: To provide an air circulation apparatus in which a sensor required for the detection of clogging of a dustproof filter is resistant to contamination as well as deterioration, and can also be employed as a cooling means for a housing of precision equipment including a computer or the like. SOLUTION: An intake air fan F1 for taking in the outside air through a dustproof filter 3 and an exhaust fan F2 provided at an air exhaust port 4 are used in combination. Clean air is circulated in the housing 1 while the dustproof filter 3 is not clogged and the air pressure in the housing 1 is maintained to be equal to the outside pressure. The occurrence of clogging of the dustproof filter 3 is sensed based on the inflow of the outside air detected by a sensor S1 which is installed at an air intake port 5 spaced from the positions where the intake air fan F1 and exhaust fan F2 are installed. COPYRIGHT: (C)2006,JPO&NCIPI

Air circulation apparatus, housing for computer, and method of detecting clogging of dustproof filter

A medical electronic apparatus includes: a casing including a lid portion provided with: a first inlet duct; a second inlet duct; and an outlet duct, the lid portion being configured to open the second inlet duct when the first inlet duct is blocked; a detection unit configured to detect an open/close state of the lid portion; and an output unit configured to output information regarding blockage of the first inlet duct based on a detection result of the detection unit.

Medical electronic apparatus

PROBLEM TO BE SOLVED: To monitor blow stop or drop or other blast trouble of a blower, in a blast type ion generator. SOLUTION: This alarm device of the blast type ion generator is provided with: a wind-speed sensor 12 for detecting the speed of wind sucked in a suction port; and a blower alarm signal generation circuit 25 for inputting output from the wind-speed sensor 12 to generate a blower alarm signal based on its output drop. COPYRIGHT: (C)2006,JPO&NCIPI

Alarm device of blast type ion generator

PROBLEM TO BE SOLVED: To provide medical electronic equipment that can accurately determine blockage of an intake port with a simple and economical structure, prevent occurrence of malfunction of operation, and properly perform notification of the blockage of the intake port.SOLUTION: Medical electronic equipment includes: a housing unit in which a first inlet, a second inlet, and an exhaust outlet are formed and which has a lid part that opens the second inlet when the first inlet is closed; a detection unit that detects an open/closed state of the lid part; and an output unit that outputs information relating to blocking of the first inlet based on a detection result of the detection unit.SELECTED DRAWING: Figure 2

Medical electronic equipment

PROBLEM TO BE SOLVED: To provide a filter clogging monitoring method capable of finding filter clogging in an early stage and an electronic appliance provided with such a monitoring function. SOLUTION: In the electronic appliance, air for forcible cooling flows through a filter (104) into a case body (100) incorporating an electronic circuit (200). A flow velocity of the air flowing through the filter into the case body is measured (202) and an alarm is issued when the flow velocity becomes lower than a predetermined threshold. Also, a temperature inside the case body is measured (204) and an operation of the electronic circuit is stopped when the temperature exceeds the predetermined threshold.

Filter clogging monitoring method and electronic appliance

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Filter clogging monitoring method and electronic appliance