Hot plate heater for a respiratory system
First Claim
Patent Images
1. A hot plate heater comprising:
- a metal hot plate consisting essentially of a thin disc and an annular flange depending from a peripheral edge of the thin disc, the thin disc having a lower disc surface;
a plastic hub adapted to be mounted to a heater unit, the hub having an upper platform and a flange extending from the upper platform, the hot plate being mounted with the flanges secured together such that the upper platform of the hub is aimed at the thin disc and the annular flange of the hot plate is about the flange of the hub; and
a heating element disposed intermediate the lower surface of the thin disc of the hot plate and the upper platform of the hub, the heating element being thermally coupled to the hot plate.
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Abstract
A heater unit for a respiratory system includes a hot plate heater including a heat conducting hot plate and a plastic hub mounted together. The hot plate may define a thin heat conducting disc and may further define a depending flange circumferentially surrounding the hub. The hub and flange may include snap-together apertures and fingers. The hub is mounted to a housing of the heater unit.
68 Citations
29 Claims
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1. A hot plate heater comprising:
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a metal hot plate consisting essentially of a thin disc and an annular flange depending from a peripheral edge of the thin disc, the thin disc having a lower disc surface; a plastic hub adapted to be mounted to a heater unit, the hub having an upper platform and a flange extending from the upper platform, the hot plate being mounted with the flanges secured together such that the upper platform of the hub is aimed at the thin disc and the annular flange of the hot plate is about the flange of the hub; and a heating element disposed intermediate the lower surface of the thin disc of the hot plate and the upper platform of the hub, the heating element being thermally coupled to the hot plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A heater unit comprising:
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a housing; a hot plate heater including; a metal hot plate consisting essentially of a thin disc and an annular flange depending from a peripheral edge of the thin disc, the thin disc having a lower disc surface; a plastic hub having an upper platform and a flange extending from the upper platform, the hot plate being mounted on the plastic hub with the flanges secured together such that the upper platform of the hub is aimed at the thin disc and the annular flange of the hot plate is about the flange of the hub; and a heating element disposed intermediate the lower surface of the thin disc of the hot plate and the upper platform of the hub, the heating element being thermally coupled to the hot plate; hub the plastic hub being mounted to the housing whereby to mount the hot plate heater to the housing. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification