Filter housing for an air ventilation system

Patent metadata

Field	Value
Publication number	US-10532307-B2
Application number	US-201615573802-A
Country	US
Kind code	B2
Filing date	May 11, 2016
Priority date	May 13, 2015
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A filter housing is adapted to be mounted in an air ventilation system and includes: an upstream air entrance opening defined by an air entrance opening frame, a downstream air exit opening defined by an air exit opening frame, a rear wall, a front opening opposite to the rear wall, a cover sealing the front opening, a movable filter holder arranged within the housing and arranged to receive a filter through the front opening, and two clamping mechanisms arranged at opposite first and second walls of the housing. Each clamping device has a release device engaged with the filter holder, and is arranged for releasing the filter from the clamped position to a released position by moving the filter holder.

First claim

The invention claimed is:

1. A filter housing adapted to be mounted in an air ventilation system, wherein the filter housing comprises:
an upstream air entrance opening defined by an air entrance opening frame, a downstream air exit opening defined by an air exit opening frame and located opposite of the air entrance opening, a rear wall extending between and attached with the air entrance opening frame and the air exit opening frame, a front opening opposite to the rear wall, the front opening being defined by a front opening frame, and a cover sealing the front opening when the cover is closed;
a movable filter holder arranged within the housing and arranged to receive a filter through the front opening; and
two clamping mechanisms arranged at opposite first and second walls of the housing, which first and second walls extend between the entrance opening frame and the exit opening frame, each clamping mechanism being connected with the filter holder to clamp the filter in a clamped position;
wherein each clamping device comprises a release device engaged with the filter holder, and arranged for releasing the filter from the clamped position to a released position by moving the filter holder, which release device comprises a handle arranged at the front opening, wherein each release device comprises a non-circular centre rod, which is attached to the handle, and eccentric disks, which are rotatably connected with the filter holder, wherein the centre rod has a non-circular cross-section, wherein the centre rod extends through correspondingly non-circular holes of the eccentric disks, and wherein the centre rod is axially movable and non-rotatable relative to the eccentric disks.

2. A filter housing according to claim 1 , wherein each clamping device comprises a biasing spring device for biasing the filter holder in a clamping direction towards the entrance opening frame to clamp the filter in a clamped position by means of a predetermined spring force.

3. A filter housing according to claim 1 , wherein each handle comprises a security element, which prevents the handle from being returned to the locked state from the release position if the filter is incorrectly mounted in the filter holder.

4. A filter housing according to claim 3 , wherein the security element comprises a protrusion, which is arranged to hit the filter thereby preventing the handle from being reversely rotated from the release position if the filter is not fully inserted into the filter housing.

5. A filter housing according to claim 1 , wherein each centre rod is rotatably connected with the front opening frame and the rear wall, and extending along the first or second wall, respectively, wherein the centre rod is provided with a locking prevention portion, which prevents the centre rod from being moved rearwards, and thereby prevents the handle from being pushed in, when the handle has been rotated away from the pulled out and non-rotated position.

6. A filter housing according to claim 5 , wherein the filter holder comprises a groove at each centre rod, which groove extends in parallel with a portion of the centre rod, and wherein the locking prevention portion comprises a protrusion, which is aligned with the groove merely when the handle is non-rotated, thereby allowing the handled to be pulled out and pushed in, respectively, when non-rotated.

7. A filter housing according to claim 1 , further comprising a probe device, which is arranged downstream of the filter holder for detecting a leak.

8. A filter housing according to claim 1 , wherein the cover has a recess in which the handles are received when the cover is closed, wherein the recess has a depth, which is deep enough to enable the cover to seal the front opening when the handles are in the locked state, and which is shallow enough to disable the cover from sealing the front opening when the handles are in a pulled out state.

9. A filter housing according to claim 1 , wherein each handle is arranged to be in a locked state when the filter is in the clamped position, arranged to be unlocked by being pulled out a distance to a pulled out and non-rotated position, and arranged to be rotated from the pulled out and non-rotated position to a release position in order to release the filter.

Assignees

• Camfil Ab

Inventors

• Addington Richard

Classifications

• B01D46/0005 Primary

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D2279/35

  for venting arrangements · CPC title

• B01D46/4227

  Manipulating filters or filter elements, e.g. handles or extracting tools · CPC title

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title

• B01D46/0086

  Filter condition indicators · CPC title