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Publication Number
US-9827390-B2
Publication Date
2017-11-28
Expiration Date
Abstract
Sound-proofing housing (31), which comprises a first housing part (41) having an intake opening (44) and comprises a second housing part (51) having a discharge opening, wherein a shaped part (61) arranged in the housing (31) is also provided, of which the flange seal (63) comes to rest between the housing parts (41, 51) when the housing (31) is put together. The acoustic emission generated by the fan is considerably reduced by a specific embodiment of the shaped part (61) with air passage openings and air-guiding devices.
Core Innovation
The invention provides a compact sound-proofing housing for a respirator that includes a first housing part and a second housing part having an intake opening and a discharge opening. A shaped part is arranged in the housing and forms a flange seal resting between the first and second housing parts, thereby dividing the housing into an intake region and a delivery region. A fan arranged in the housing draws in air through the intake opening.
A fan receptacle is configured to hold the fan and protrudes from the intake side of the flange seal, with the fan receptacle having a free end. Air guides are configured to guide air drawn at least through the flange seal into the delivery region by the fan, and a support flange is provided in a region of the free end of the fan receptacle. The support flange has contact sides contacting inside the housing and has at least one air passage opening, and the design further includes at least one further air passage opening provided in the fan receptacle adjacent to the flange seal intake side.
The disclosed construction defines controlled airflow clearances and guided air paths using a shaped part and flange seal arrangement with defined intake and delivery regions. Assembly features are emphasized through mechanical connection structures such as fastening domes and fastening dome recesses with stops, and fixing cams with fixing cam receptacles to maintain an intake gap via the spacing between housing portions. Additional measures include noise insert elements, and cable through-openings formed in or associated with the flange seal using encompassing portions and housing recesses to simplify wiring and prevent air short circuits.
Claims Coverage
The excerpt includes three independent claims that share the same general architecture of a respirator sound-proofing housing with a first housing part, a second housing part, a shaped part forming a flange seal, and an in-housing fan routing air from an intake region to a delivery region via guided air paths. The inventive features combine flange seal geometry, fan receptacle structure, support flange air passage openings, and intake-side guide elements.
Flange seal dividing intake and delivery regions with guided air through a fan receptacle
A sound-proofing housing for a respirator with a shaped part forming a flange seal resting between first and second housing parts, the shaped part dividing the housing into an intake region and a delivery region, and air guides configured to guide air drawn at least through the flange seal into the delivery region by a fan, wherein a fan receptacle is configured to hold the fan and protrudes from the intake side of the flange seal.
Support flange with air passage openings in the region of the fan receptacle free end
A support flange having at least one air passage opening, the support flange having contact sides contacting inside the housing and being provided in a region of the free end of the fan receptacle, together with at least one further air passage opening provided in the fan receptacle adjacent to the flange seal intake side.
Intake-side guide element protruding from a support flange with a second air passage opening
A sound-proofing housing further including an intake-side guide element that protrudes from a side of the support flange, the side being remote from the intake side of the flange seal, the intake-side guide element adjacent to a non-contact side of the support flange, and the intake-side guide element including a second air passage opening for air drawn in by the fan.
Overall, the independent claims define a respirator sound-proofing housing where a shaped part forming a flange seal separates an intake region from a delivery region and cooperates with a protruding fan receptacle, support flange air passage openings, and intake-side guide elements to define an internal air path between multiple openings and spaces while maintaining a specific intake-side and delivery-side structure.
Stated Advantages
Reduces acoustic emissions.
Improves fan/motor cooling via controlled airflow clearances and guided air paths.
Simplifies wiring and prevents air short circuits.
Documented Applications
Used in a respirator requiring a sound-proofing housing for a respirator fan and motor, including intake and discharge openings and internal guided airflow.
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