Blowing device
First Claim
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1. A blowing device comprising:
- a housing (2), at least one impeller (8) accommodated therein, an intake opening (6), and a discharge flow passage (24), wherein defined in the housing (2) in conjunction with the impeller (8) is a flow path which extends from a first axial level (12) of the housing (2), said level having the intake opening (6), into the discharge flow passage (24) over a step (20).
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Abstract
The present invention relates to a blowing device, in particular for use in a respiration device for delivering a respiration gas. The blowing device according to the invention includes an impeller which is driven by way of a drive device and which delivers a respiration gas to an outflow passage. On the way into that outflow passage the gas being delivered flows over a flow breakaway step which together with a spirally enlarging peripheral wall deflects the gas as it flows immediately out of the radial impeller. The invention also relates to a CPAP-apparatus fitted with such a blowing device.
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Citations
20 Claims
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1. A blowing device comprising:
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a housing (2), at least one impeller (8) accommodated therein, an intake opening (6), and a discharge flow passage (24), wherein defined in the housing (2) in conjunction with the impeller (8) is a flow path which extends from a first axial level (12) of the housing (2), said level having the intake opening (6), into the discharge flow passage (24) over a step (20). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification