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US 11,884,126 B2Granted
HVAC temperature stratification door systems and methods
AssigneeAir International (US) Inc.
InventorJoseph J. Spryshak
Life of this patent
Estimating the term…
Abstract
An HVAC system includes an evaporator, a heater, a plurality of outlets, and a sliding control door downstream of the evaporator, which is configured to allow air to flow across one or both of a heated path across the heater and a bypass path bypassing the heater. A sliding stratification door is downstream of the temperature control door and positionable to, in an intermediate position, direct air flowing through the bypass path to be mixed with air that flowed across the heated path before flowing out of the plurality of outlets.
Claims20
An HVAC system, comprising:
- an evaporator:
- a heater;
- a plurality of outlets;
- a sliding control door downstream of the evaporator and configured to allow air to flow across one or both of a heated path across the heater and a bypass path bypassing the heater;
- and
- a sliding stratification door downstream of the control door and positionable to, in an intermediate position, direct the air flowing through the bypass path to be mixed with air that flowed across the heated path before flowing out of the plurality of outlets;
- wherein the air is mixed within a bypass cavity;
- in a full cold position, the stratification door is in a retracted position within an upper exit cavity to unobstruct the bypass path;
- and the plurality of outlets includes a defrost outlet and an upper vent outlet, and the upper exit cavity is provided fluidly between the bypass cavity and the defrost outlet and upper vent outlet.
6 more elements
An HVAC system, comprising:
- an evaporator;
- a heater;
- a plurality of outlets;
- a sliding control door downstream of the evaporator and configured to allow air to flow across one or both of a heated path across the heater and a bypass path bypassing the heater;
- and
- a sliding stratification door downstream of the control door and positionable to, in an intermediate position, direct the air flowing through the bypass path to be mixed with air that flowed across the heated path before flowing out of the plurality of outlets;
- wherein, in the intermediate position, the air flowing across the bypass path flows between a convex surface of the control door and a concave surface of the stratification door and toward a lower portion of a bypass cavity, where the air is then mixed with the air that flowed across the heated path.
4 more elements
An HVAC system, comprising:
- an evaporator:
- a heater;
- a plurality of outlets;
- a sliding control door downstream of the evaporator and configured to allow air to flow across one or both of a heated path across the heater and a bypass path bypassing the heater;
- and
- a sliding stratification door downstream of the control door and positionable to, in an intermediate position, direct the air flowing through the bypass path to be mixed within a bypass cavity with the air that flowed across the heated path before flowing out of the plurality of outlets;
- wherein,
- in a full cold position, the stratification door is in a retracted position within an upper exit cavity to unobstruct the bypass path;
- the plurality of outlets includes a defrost outlet and an upper vent outlet;
- the upper exit cavity is provided fluidly between the bypass cavity and the defrost outlet and upper vent outlet;
- when the stratification door is in the retracted position, a maximum distance between a surface of the stratification door and an interfacing inner surface of the upper exit cavity is 0-50 mm;
- and
- in the intermediate position, air flowing across the bypass path flows between a convex surface of the control door and a concave surface of the stratification door and toward a lower portion of a bypass cavity, where the air is then mixed with the air that flowed across the heated path.
10 more elements
Dependencies are inferred from the claim text.