Warm air blower for medical warming blankets
First Claim
1. An air blower system comprising:
- a compression limit for compressing and directing air flow; and
a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppressed noise as the compressed air move across the curvilinear interior surface,wherein the plenum member curvilinear interior surface indentations are irregular and vary in depth to reduce fiction and suppress noise having harmonic vibration components.
2 Assignments
0 Petitions
Accused Products
Abstract
An improved warm air blower system for providing a compact source of pressurized air that can be utilized for delivering warm or ambient air to a patient through, for example, a warming blanket. The warm air blower system can include a compression unit and a plenum chamber having a plenum member with a curvilinear interior surface, the plenum member interior surface has a plurality of surface indentations to enable the formation of controlled local turbulence adjacent the interior surface to reduce friction and noise as the compressed air moves across the interior surface. The warm air blower system can be appropriately mounted on a vertical pole, bed, stand or floor mounted. Air filters can be used to filter the air before and after induction to the compression unit. The safe operation of the warm air blower system is appropriately controlled and monitored by a control unit that includes a thermostat.
22 Citations
21 Claims
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1. An air blower system comprising:
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a compression limit for compressing and directing air flow; and a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppressed noise as the compressed air move across the curvilinear interior surface, wherein the plenum member curvilinear interior surface indentations are irregular and vary in depth to reduce fiction and suppress noise having harmonic vibration components. - View Dependent Claims (2, 3, 4, 5)
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6. A warm air blower system, comprising:
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a compression unit, for compression and directing air flow; a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppress noise as the compressed air moves across the curvilinear interior surface; a heater unit for heating the directed air; a temperature tensor for measuring the temperature of the heated air the temperature sensor being located in close proximity to where the heated air is supplied to a cooperative receiving unit, and a control unit to control and monitor the temperature of the heated are the control unit allowing the selection of a predetermined set temperature of the heated of the heated are; wherein the predetermined set temperature is selected from a group consisting of 36°
C.;
40°
C.; and
4420 C.;
the actual temperature of the heated air varying by ±
1°
C. from the selected set temperature, andthe control unit is capable of testing the operability of the warm air blower system, the control unit being responsive to a heated air over-temperature condition and a heated air under-temperature condition. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A warm air blower system, comprising:
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a compression unit for compressing and directing air flow; a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppress noise as the compressed air moves across the curvilinear interior surface; a heater unit for heating the directed air; a temperature sensor for measuring the temperature of the heated air the temperature sensor being located in close proximity to where the heated air is supplied to a cooperative receiving unit; and a control unit to control and monitor the temperature of the heated air, the control unit allowing the selection of a predetermined set temperature of the heated air, the control unit capable of automatically testing the operability of the warm air blower system, the control unit being responsive to a heated air over-temperature condition, and the control unit being responsive to a heated air under-temperature condition, wherein the control unit provides a manually operated heated air over-temperature test to verify the proper response of the control unit to a heated air over-temperature condition, the control unit detecting when the over-temperature safety limit has been reached to cause the warm air blower system to cease heating and air blowing, the control unit providing one or more indications of the heated air over-temperature condition, the indications being audible and visible. - View Dependent Claims (19)
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20. An air blower system, comprising:
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a compression unit for compressing and directing air flow; and a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppress noise as the compressed air moves across the curvilinear interior surface, wherein the plenum member is removable from the plenum chamber, the removable plenum member being formed in one piece from a semi-rigid material.
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21. An air blower system, comprising:
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a compression unit for compressing and directing air flow; and a plenum chamber operatively connected to the compression unit, the plenum chamber having a plenum member forming an interior wall with a curvilinear interior surface, the plenum member curvilinear interior surface having a plurality of predetermined surface indentations to enable the formation of a predetermined amount of controlled local turbulence adjacent the curvilinear interior surface to reduce friction and suppress noise the compressed air moves across the curvilinear interior surface, wherein the plenum member is formed as an irremovable part of the plenum chamber.
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Specification