Gas separation – With means securing or retaining separating media – Unit or cohesive sheet-like media in flow line or frame
Patent
1985-02-12
1986-10-28
Hart, Charles
Gas separation
With means securing or retaining separating media
Unit or cohesive sheet-like media in flow line or frame
55521, B01D 2706
Patent
active
046196757
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a filter used for an air cleaner set in an air suction port of a dust protective mask and a gas mask, or an air feed port of a computer, an air-conditioner, a vacuum cleaner and a room.
BACKGROUND ART
The conventional filters for air cleaners include a filter which is made by compressing the conically-molded filter paper from the above in a plurality of steps into a concentrically-folded structure, or folding the flat filter paper in the shape of the teeth of a saw as shown in FIGS. 6 and 7, and which is set in a filter body having air inlet and outlet ports. However, this filter for air cleaners has the following drawbacks. The area of the filtering surface of the filter cannot be increased greatly in comparison with the cross-sectional area of an air-passing portion thereof. The impact strength of the filter medium is low, and the steps of manufacturing the filter medium are complicated. The cost of manufacturing the filter medium is high.
An object of the present invention is to provide a filter for air cleaners, having a large effective area in comparison with the cross-sectional area of an air-passing portion thereof, and a high impact strength.
DISCLOSURE OF INVENTION
The present invention is directed to a filter consisting of a filter medium, which is obtained by folding a piece of elongated filter paper so that ridges and valleys are formed alternately, fitting spacers on this folded filter paper so as to maintain the spaces among the ridges and valleys properly, and then bending the resultant product so that the ridges and valleys extend in the radial direction, and which is set in a filter body having air inlet and outlet ports. Owing to such construction, a filter for air cleaners, having a large effective area in comparison with the cross-sectional area of an air-passing portion thereof, and a high impact strength, and capable of being manufactured at a low cost, can be obtained.
According to the present invention, a cushion material is interposed between the inner circumferential surface of the filter medium and an inner wall of a filter body and/or between the outer circumferential surface of the filter medium and an outer wall of the filter body. Thus, the shock can be absorbed to prevent the filter medium and the filter body from being broken, and the air-tightness of the contact portions of the filter medium and filter body can be improved. According to the invention, a cushion material is also bonded to the outer circumferential surface of the outer wall of the article. This enables the shock to be absorbed to prevent the filter for air cleaners from being broken, and serves to improve the air-tightness of the contact portions of the filter body and a case housing the filter for air cleaners.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates the filter paper in a folded state;
FIG. 2 illustrates the folded filter paper compressed partially by the spacers fitted thereon;
FIG. 3 is a partially cutaway view in perspective of a filter for air cleaners according to the present invention;
FIG. 4 is a sectional view showing an example of a mode of use of the same filter for air cleaners;
FIG. 5 illustrates a modified example of the present invention;
FIG. 6 is a perspective view of an example of a conventional filter for air cleaners; and
FIG. 7 is a perspective view of another example of a conventional filter for air cleaners.
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will now be described more in detail with reference to the accompanying drawings. Reference numeral 1 denotes a filter for an air cleaner set in an air suction port of a dust protective mask and a gas mask. The filter 1 is made by folding the elongated filter paper so that ridges 2 and valleys 3 are formed alternately as shown in FIG. 1, fitting string type or comb type spacers 4, 5 on the folded filter paper so as to maintain the distance between the adjacent ridges 2, 2 and valleys 3, 3 in a predetermined level as shown in FIG. 2, and then bending thi
REFERENCES:
patent: 3402531 (1968-09-01), Farr
patent: 3803817 (1974-04-01), Lewis
patent: 4323374 (1982-04-01), Shinegawa et al.
patent: 4422861 (1983-12-01), Dusza
Hart Charles
Midori Anzen Co., Ltd.
LandOfFree
Filter for air cleaners does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Filter for air cleaners, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter for air cleaners will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1344685