Title:
TIGHTLY CLOSED MAGNETIC DISC APPARATUS
Document Type and Number:
Japanese Patent JPS56119975
Kind Code:
A
Abstract:
PURPOSE:To maintain the inside of a housing, of which the inside is tightly closed, clean and prevent the internal temp. from rising excessively by providing suction and exhaust ports, as well as suction and exhaust filters in the housing and a forced draft fan on the outside of the housing, respectively. CONSTITUTION:The open air taken in through a forced draft fan 14 is sent into a housing 2, of which the inside is tightly closed, through a suction filter 20, and the air in the housing 2 is exhausted through an exhaust port 21. Hence, the inside of the housing 2 is maintained clean by the air purified by the suction filter 20. The heat evolved in the housing 2 is exhausted quickly to the outside of the housing 2 without being accumulated in the housing 2; hence, the internal temp. of the housing 2 is prevented from rising excessively. Further, the entry of the dust in the open air into the housing 2 while the fan 14 is not in operation is prevented by mounting an exhaust filter 22 or a dust entry preventing means such as exhaust valve to the exhaust port 21.
Inventors:
KAWAKAMI CHIKAHISA
SHIMANUKI MACHIO
SHIMANUKI MACHIO
Application Number:
JP2120680A
Publication Date:
September 19, 1981
Filing Date:
February 22, 1980
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G11B33/14; G11B25/04; (IPC1-7): G11B25/04