Air-conditioning air filter

• US 6,485,538 B1
• Filed: 11/17/2000
• Issued: 11/26/2002
• Est. Priority Date: 03/31/1999
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Yugen Caisha Infinity Kenkyusho
• Inventors: Toyoshima, Kenji
• Primary Examiner(s): Simmons, David A.
• Assistant Examiner(s): PHAM, MINH CHAU THI
• Application Number:
  US09/674,517
• Time in Patent Office: 739 Days
• Field of Search: 554/90, 554/97, 555/01, 555/02, 555/04, 555/06, 555/09, 555/11, 555/21, 55D/IG.31, 554/82, 554/84
• US Class Current: 55/490
• CPC Class Codes: B01D 2265/024 Mounting aids
• CPC Class Codes: B01D 2271/027 Radial sealings
• CPC Class Codes: B01D 46/0005 Mounting of filtering elements within casings, housings or frames B01D46/2422 takes precedence
• CPC Class Codes: B01D 46/121 V-type arrangements
• CPC Class Codes: B01D 46/521 using folded, pleated material
• CPC Class Codes: B01D 46/58 connected in parallel
• CPC Class Codes: F24F 13/28 Arrangement or mounting of filters
• CPC Class Codes: Y10S 55/31 Filter frame

Abstract

The present invention provides an air-conditioning air filter capable of cleaning and replacing only a filter element thereof for resources saving, refuse reduction, and cost reduction, and also preventing air leakage due to expanded deformation of a main box. The air-conditioning air filter has a plurality of filter bodies stored zigzag and removably in a main box, slide grooves formed in the upper and lower end surfaces of the filter frame, right and left side guard rails, which cover both sides of the upper and lower surfaces of the filter frame, installed projectedly on the inner surfaces of a top plate and bottom plate of the main box, guide rails, which are fitted slidably in the sliding channels, installed projectedly between the right and left side guard rails, engaging projections installed projectedly on the inner side of the right and left side guard rails, and engaging channels, which are engaged slidably with the engaging projections, provided in both side surfaces of the filter frame at the upper and lower end parts.

Claims

1. An air-conditioning air filter comprising:

a main box made of plastic and having a shape in which an air inlet is opened in a front side and an air outlet is opened in a back side, an upper side is closed by a top plate, a bottom side is closed by a bottom plate, and right and left sides are closed by right and left side plates, respectively; and

a plurality of filter bodies which are extractably accommodated in a zigzag manner between said air inlet and said air outlet in said main box, each of said filter bodies being formed by fitting a filter element in the shape of a bellows into a rectangular filter frame, wherein sliding channels are formed in upper end faces and lower end faces of said filter frames, respectively, over a whole length in anteroposterior direction, right and left guard rails having a shape which covers both sides of said upper end faces and said lower end faces of said filter frames, and guide rails which being placed in parallel with and between said right and left guard rails and to be slidably fitted with said sliding channels are protrudingly formed in a zigzag manner on inner faces of said top plate and said bottom plate of said main box, respectively, engaging projections being protrudingly and horizontally disposed on inner sides of said right and left guard rails, and engaging channels which are to be slidably engaged with the engaging projections being formed over a whole length in anteroposterior direction on both side faces of said upper end portion and said lower end portion of each of said filter frames, wherein said guide rails are formed into a convex section shape, and said sliding channels are formed into a convex section shape corresponding to the convex section shape of said guide rails.

2. An air-conditioning air filter comprising:

a main box made of plastic and having a shape in which an air inlet is opened in a front side and an air outlet is opened in a back side, an upper side is closed by a top plate, a bottom side is closed by a bottom plate, and right and left sides are closed by right and left side plates, respectively; and

a plurality of filter bodies which are extractably accommodated in a zigzag manner between said air inlet and said air outlet in said main box, each of said filter bodies being formed by fitting a filter element in the shape of a bellows into a rectangular filter frame, wherein guide rails having a T-shaped section are disposed in a zigzag manner on one of a pair of upper and lower end faces of each of said filter frames and a pair of said top plate and said bottom plate of said main box, and sliding channels which are to be slidably fitted with said guide rails are disposed in a zigzag manner on the other pair.