A Suction Apparatus with Noise Reduction Means

The invention concerns a suction apparatus with noise reduction means (7,8) in one or more airflow passages (2,3,4) for reducing noise emission from an airflow generator (1) or the like, wherein at least one airflow passage (2,3,4) is provided with at least one indentation with a predetermined depth...

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Bibliographische Detailangaben
1. Verfasser:	PETER NOHR LARSEN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COFFEE MILLS DOMESTIC ARTICLES OR APPLIANCES DOMESTIC WASHING OR CLEANING FURNITURE HEATING HUMAN NECESSITIES LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SPICE MILLS SUCTION CLEANERS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention concerns a suction apparatus with noise reduction means (7,8) in one or more airflow passages (2,3,4) for reducing noise emission from an airflow generator (1) or the like, wherein at least one airflow passage (2,3,4) is provided with at least one indentation with a predetermined depth (D) extending substantially perpendicularly to the general direction of the noise in the passage. By the invention, a suction apparatus with noise reduction means is provided which is simple and efficient at reducing noise and also inexpensive to manufacture.