Patent Application
20150328960
The disclosure relates to an HVAC vent manufacture configured for generation of vortex rings.
An HVAC (Heating, Ventilation, and Air Conditioning) system for a vehicle typically includes an HVAC module, a duct or air distribution system, and one or more vents. The HVAC module produces a steady flow of conditioned air, which may be either heated or cooled, or ambient air for ventilation. The duct or air distribution system contains the steady flow of conditioned or ambient air and routes it from the HVAC module to the one or more vents. The vent or vents may be grilles and are typically located at the periphery of a space where the conditioned air is needed for the comfort of one or more occupants of the space. Each of the vent or vents include an air inlet side, which receives the steady flow of conditioned or ambient air, and an air outlet side, from which the steady flow of conditioned or ambient air is directed into the space to be heated, ventilated, or cooled.
When the space is uncomfortably hot for the occupants, the HVAC system is used to deliver cooling air to the space. However, the steady flow of cooling air from the vent or vents may not be sufficient to reach the occupants of a space remote from the vent or vents. Although the cooling air flow may eventually cool the entire space and its occupants, it will not immediately cool the occupants unless the cooling air flow reaches them. Immediate occupant cooling can be greatly enhanced by projecting the cooling air flow from the vent or vents to reach the skin and clothing of the occupants. Locating the vent or vents close to all of the occupants may require costly, complex, and space consuming additions to the air distribution system and may also require additional vents.
An HVAC vent is provided. The HVAC vent includes a housing or an HVAC air chamber and an electro-mechanical diaphragm. The housing or HVAC air chamber is configured to define an air inlet for receiving cooling air from an HVAC module, an air chamber for enclosing the air received, and an air outlet configured to facilitate the generation of vortex rings. The electro-mechanical diaphragm is connected to the housing or HVAC air chamber and cooperates with the configuration of the air outlet and the receipt of cooling air from the HVAC module to project the received cooling air in the air chamber out of the air chamber through the air outlet as generated vortex rings.
The HVAC air chamber may be substantially frustoconical in shape. The HVAC air chamber or housing may include a feature at the air outlet that is substantially an annular ridge that surrounds the air outlet. And, the HVAC air chamber may include a valve for controlling the air being received by or at the air inlet.
A vehicle is also provided. The vehicle includes a first seat that is occupiable by a driver, a second row of seats that is occupiable by one or more passengers, an HVAC module for cooling air, and a cooling air distribution system having an HVAC vent oriented sufficiently with respect to the second row of seats to enable cooling air to be projected toward the second row of seats. The HVAC vent is characterized as an electro-mechanical vortex ring generator that has a controlled air inlet for receiving cooling air from the HVAC module and an air outlet. The vortex ring generator is configured as a hollow conical member having on one side of the air inlet an annular ridge forming the air outlet and on the other side of the air inlet an electro-mechanical diaphragm of nonporous material. The electro-mechanical diaphragm cooperates sufficiently with the cooling air entering from the controlled air inlet to generate and project one or more vortex rings sufficient to reach the second row of seats and any passengers occupying those seats.
The vehicle may also include a third row of seats rearward of the second row of seats that are occupiable by one or more passengers. In this embodiment, the vent is oriented sufficiently with respect to the second and third rows of seats to enable cooling air to be projected toward the second and third rows of seats, and the diaphragm cooperates sufficiently with the cooling air entering from the controlled air inlet to generate and project one or more vortex rings sufficient to reach the second and third rows of seats and any passengers occupying those seats.
The above features and advantages and other features and advantages of the present teachings are readily apparent from the following detailed description of the best modes for carrying out the present teachings when taken in connection with the accompanying drawings.
Referring to the drawings, wherein like reference numbers refer to like components throughout the views,
The vehicle 10 also has an HVAC (Heating, Ventilating, and Air Conditioning) module 18 for cooling air and a cooling air distribution system 20. The HVAC module 18 produces a steady flow of cooling air. The cooling air distribution system 20 contains the steady flow of cooling air and routes it from the HVAC module 18 to a vent or vents 22. Each vent 22 may be characterized as an electro-mechanical vortex ring generator and is oriented sufficiently with respect to the second and third rows of seats 14, 16 to enable the cooling air to be projected toward the second and third rows of seats 14, 16. The vent or vents 22 may be located forward of the first seat 12, or the vent or vents 22 may be located in other areas of the vehicle 10.
Each vent 22 may generate a vortex ring 24 that projects cooling air toward the second and third rows of seats 14, 16. The direction of the vortex ring 24 in motion is shown by arrow E. A vent 22 need not be located forward of the first seat 12. The vent or vents 22 may also be used in vehicles with no third row of seats 16 or in vehicles with more than three rows of seats. Vortex ring 24 air flow will be described in greater detail below, with reference to
Referring now to
The housing 30 defines an air inlet 32 for receiving cooling air from the HVAC module 18. The direction of cooling air flow into the air inlet 32 is shown by arrow A. The air inlet 32 may be controlled at the controlled air inlet 52 and may include a valve 42 for the air entering at air inlet 32. The valve 42 may be a one-way valve or a reed valve.
The housing 30 also defines an air chamber 34 for enclosing the cooling air received. The air chamber 34 may be configured as a hollow conical member or may be substantially frustoconical in shape. The air chamber 34 may also be substantially cylindrical in shape.
The housing 30 also defines an air outlet 36 configured to facilitate the generation of vortex rings. When the air chamber is full of cooling air, cooling air entering the air inlet 32 may flow out of the air outlet 36 in the direction of arrow B. The housing 30 may include a feature 48 at the air outlet 36. The feature 48 may be configured as an annular ridge 50 surrounding the air outlet 36.
The vent 22 may be configured having on one side of the air inlet 32 the annular ridge 50 forming the air outlet 36 and on the other side of the air inlet 32 the electro-mechanical diaphragm 38.
Referring now to
As best shown in
This sequence is repeated at a predetermined frequency which is appropriate for generating sufficient vortex rings 24 to project toward and reach the second and third rows of seats 14, 16 and any passengers occupying those seats. The electro-mechanical diaphragm 38 may be actuatable at a frequency of less than 20 Hertz.
If desired, the vent 22 may also be operated as a conventional HVAC vent by simply not actuating the electro-mechanical diaphragm 38. In this mode of operation, as best shown in
Referring now to
Each vortex ring 24 travels in the direction of arrow E, carrying its poloidal flow 58 of cooling air with it. The poloidal flow 58 of each vortex ring 24 lessens the friction between the vortex ring 24 and the surrounding air as the vortex ring moves in the direction of arrow E. This enables each vortex ring 24 to travel a long distance with little loss of mass and kinetic energy. Thus, a projected vortex ring 24 can carry cooling air farther than a projected steady flow or jet of cooling air.
The provided HVAC vent applies to any type of vehicle, including but not limited to cars, trucks, SUVs, vans, busses, trains, airplanes, and boats. It may also apply to non-vehicular spaces where rapid occupant cooling is desired. These spaces may include, but are not limited to, rooms and hallways in buildings, partially enclosed spaces, and unenclosed spaces. The provided HVAC vent applies to spaces where the occupants are either seated or unseated.
While the best modes for carrying out the many aspects of the present teachings have been described in detail, those familiar with the art to which these teachings relate will recognize various alternative aspects for practicing the present teachings that are within the scope of the appended claims.
