NIPPON MUKI CO., LTD. Patent applications |
Patent application number | Title | Published |
20120073254 | FILTER ELEMENT AND DOUBLE-PLEATED AIR FILTER USING THE SAME - Provided is a double-pleated air filter where filter elements each of which ensures an inter-pleat gap (air passage) by folding filter media in multiple layers and by defining a pitch, a thickness and a folding shape of the filter media are arranged in the V-bank-shaped structure whereby the air filter can be used with a large air volume due to a low pressure drop. In the filter element which keeps an interval between filter media folded in a zigzag shape by an interval maintaining material, a relationship among an interval a (pitch) between a peak portion of a pleat and a peak portion of a pleat arranged adjacent to the pleat, a folded width b of the filter media, an interval c (a center portion gap) between the filter media at center portions of the pleats arranged adjacent to each other (an intermediate position of the folded width b of the filter media), an interval c′ (an opening portion gap) between the filter media in the vicinity of peak portions of the pleats arranged adjacent to each other, a thickness d of the filter media, and a width e (a distal end width) of the pleat in the vicinity of the peak portion of the pleat is set such that the relationship satisfies c′/c≧1.1, c′=a−e≧0.45 mm, c=a/2−d and e/d≧2. | 03-29-2012 |
20110314782 | PLEATED AIR FILTER PACK AND AIR FILTER USING SAME - The invention provides a filter pack of which the mass is not increased, and moreover, the effective filter medium area is not reduced, and of which the pressure drop is sufficiently low, and the strength is sufficiently high, and an air filter using this. | 12-29-2011 |
20100192531 | FILTER MEDIUM FOR AIR FILTER AND AIR FILTER - An air filter comprising a filter pack comprising a folded nanofiber filter medium, fitted to a filter frame through a seal material, the nanofiber filter medium being a filter medium for an air filter, comprising a nanofiber filter medium which, when a filter medium face velocity is 5.3 cm/s, has a performance index of collecting target particle diameter of 0.3 μm, 0.040 (1/Pa) or more, performance index of collecting target particle diameter of 0.1 μm, 0.030 (1/Pa) or more, and performance index of collecting target particle diameter of 0.05 μm, 0.050 (1/Pa) or more. By this, a high air volume and low pressure drop type high-performance air filter using a nanofiber filter medium can be provided. | 08-05-2010 |