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US 5,701,891 AGranted
Olefin heat and moisture exchanger
AssigneeNellcor Puritan Bennett LLC
InventorAllen W. Groenke
Life of this patent
Estimating the term…
Abstract
A heat exchanger medium which can be incorporated into a heat and moisture exchanger. The heat exchanger medium includes an elongate sheet of spunbonded olefin. The sheet has a longitudinal axis, a front and back surface and first and second edges generally parallel to the longitudinal axis of the sheet. The sheet may be covered with a hydrophilic coating and a desiccant.
Claims21
A heat exchanger medium, comprising:
- an elongated sheet including spunbonded olefin, the sheet having a longitudinal axis, a front surface and back surface, and a first edge and a second edge generally parallel to the longitudinal axis of the sheet, wherein the sheet includes a desiccant.
A heat and moisture exchanger, comprising:
- a housing including an enclosure having a patient port and a machine port;
- a first elongated sheet including spunbonded olefin, the sheet having a longitudinal axis, a front surface and back surface, and a first edge and a second edge generally parallel to the longitudinal axis of the sheet;
- wherein the sheet is disposed in a spiraling generally cylindrically-shaped roll such that the sheet is arranged in generally concentric layers;
- and the roll is disposed within the housing enclosure;
- and
- an elongate sheet of netting having a longitudinal axis, a front surface and a back surface, and a first edge and a second edge generally parallel to the longitudinal axis of the sheet of netting wherein the sheet of netting is disposed between the generally concentric layers of the olefin sheet.
3 more elements
A heat and moisture exchanger comprising:
- a housing including an enclosure having a patient port and machine port;
- an elongated heat exchanger sheet, the sheet having a longitudinal axis, a front surface and a back surface, and a first edge and a second edge generally parallel to the longitudinal axis of the sheet;
- an elongate sheet of netting having a longitudinal axis, a front surface and a back surface, and a first edge and a second edge generally parallel to the longitudinal axis of the netting;
- and
- wherein the back surface of the sheet and the back surface of the netting are disposed adjacent each other in a spiraling roll such that the sheet of netting defines a spacer between generally concentric layers of the sheet;
- and the roll is disposed within the housing enclosure.
3 more elements
Dependencies are inferred from the claim text.