HVAC Duct
An HVAC airflow duct has a polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value.
The present application claims priority to U.S. Provisional Patent Application No. 61/757,033, filed on Jan. 25, 2013 by Richard Lee Jameson, entitled “Foam Duct Panel,” which is incorporated by reference herein as if reproduced in its entirety.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTNot applicable.
REFERENCE TO A MICROFICHE APPENDIXNot applicable.
BACKGROUNDSome heating, ventilation, and/or air conditioning (HVAC) systems comprise cabinets and/or ducts configured to receive airflow therethrough. In some cases, a component of a cabinet and/or duct may comprise fibrous insulation material, materials comprising heat transfer conductivities that allow condensation formation on the component, and/or extraneous layers of material that, together with foam, are configured to provide a composite component. Some HVAC air handling units and/or are associated with potential sources of fire.
For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts.
This disclosure provides, in some embodiments, systems and methods for (1) forming an HVAC air handling unit, an HVAC cabinet, and/or an HVAC duct comprising a substantially polyetherimide based foam, (2) providing a relatively high heat resistant, highly insulative, and/or structurally rigid HVAC air handling unit, HVAC cabinet, and/or HVAC duct comprising a polyetherimide based foam, and (3) sealing an HVAC air handling unit, an HVAC cabinet, and/or an HVAC duct using a panel comprising a polyetherimide based foam. In some embodiments, an inner wall of an HVAC air handling unit, an HVAC cabinet, and/or an HVAC duct that may be exposed to an airflow may comprise a foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide.
Referring now to
Blower cabinet 102 comprises a four-walled fluid duct that accepts fluid (air) in through an open bottom side of the blower cabinet 102 and allows exit of fluid through an open top side of the blower cabinet 102. In this embodiment, the exterior of the blower cabinet 102 comprises a blower cabinet outer skin 118 and a blower cabinet panel 120. The blower cabinet panel 120 is removable from the remainder of the blower cabinet 102 thereby allowing access to an interior of the blower cabinet 102. Similarly, heat exchanger cabinet 104 comprises a four-walled fluid duct that accepts fluid (air) from the blower cabinet 102 and passes the fluid from an open bottom side of the heat exchanger cabinet 104 and allows exit of the fluid through an open top side of the heat exchanger cabinet 104. In this embodiment, the exterior of the heat exchanger cabinet 104 comprises a heat exchanger cabinet outer skin 122 and a heat exchanger cabinet panel 124. The heat exchanger cabinet panel 124 is removable from the remainder of the heat exchanger cabinet 104 thereby allowing access to an interior of the heat exchanger cabinet 104.
The AHU 100 further comprises a plurality of selectively removable components. More specifically, the AHU 100 comprises a heater assembly 126 and may be removably carried within the heat exchanger cabinet 104. The AHU 100 further comprises a refrigeration coil assembly 128 that may also be removably carried within the heat exchanger cabinet 104. In this embodiment, the heater assembly 126 is configured to be optionally carried within heat exchanger cabinet 104 nearer the top side 106 of the AHU 100 than the refrigeration coil assembly 128. Similarly, the AHU 100 comprises a blower assembly 130 that may be removably carried within the blower cabinet 102. The AHU 100 may be considered fully assembled when the blower assembly 130 is carried within the blower cabinet 102, each of the refrigeration coil assembly 128 and the heater assembly 126 are carried within the heat exchanger cabinet 104, and when the blower cabinet panel 120 and heat exchanger cabinet panel 124 are suitably associated with the blower cabinet outer skin 118 and the heat exchanger cabinet outer skin 122, respectively. When the AHU 100 is fully assembled, fluid (air) may generally follow a path through the AHU 100 along which the fluid enters through the bottom side 108 of the AHU 100, successively encounters the blower assembly 130, the refrigeration coil assembly 128, and the heater assembly 126, and thereafter exits the AHU 100 through the top side 106 of the AHU 100.
In this embodiment, each of the four walls of the blower cabinet 102 and the heat exchanger cabinet 104 are configured to have a double-wall construction. More specifically, the heat exchanger cabinet 104 further comprises a heat exchanger cabinet right shell 132 and a heat exchanger cabinet left shell 134. In this embodiment, the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may be joined to generally form the interior of the heat exchanger cabinet 104. In order to form the above-mentioned double-wall construction for the heat exchanger cabinet 104, the heat exchanger cabinet outer skin 122 generally covers the right side and back side of the heat exchanger cabinet right shell 132 while also generally covering the left side and back side of the heat exchanger cabinet left shell 134. Most generally, the heat exchanger cabinet right shell 132, the heat exchanger cabinet left shell 134, and the heat exchanger cabinet outer skin 122 are shaped so that upon their assembly together a heat exchanger cabinet wall space exists between the heat exchanger cabinet outer skin 122 and each of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134. The blower cabinet right shell 136, the blower cabinet left shell 138, and the blower cabinet outer skin 118 are also shaped so that upon their assembly together a blower cabinet wall space exists between the blower cabinet outer skin 118 and each of the blower cabinet right shell 136 and the blower cabinet left shell 138.
In some embodiments, one or more of the heat exchanger cabinet wall space and blower cabinet wall space may be at least partially filled with a foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide. At least partially filling one or more of the spaces may increase a structural integrity of the AHU 100, may increase a thermal resistance of the AHU 100 between the interior of the AHU 100 and the exterior of the AHU 100, may decrease air leakage from the AHU 100, and may reduce and/or eliminate the introduction of volatile organic compounds (VOCs) into breathing air attributable to the AHU 100. Such a reduction in VOC emission by the AHU 100 may be attributable to the lack of and/or reduced use of traditional fiberglass insulation within the AHU 100 made possible by the insulative properties provided by the foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, that may be disposed within the spaces.
In some embodiments, each of the blower cabinet outer skin 118 and the heat exchanger cabinet outer skin 122 may be constructed of metal and/or plastic. Each of the heat exchanger cabinet right shell 132, the heat exchanger cabinet left shell 134, blower cabinet right shell 136, and blower cabinet left shell 138 may be constructed of a sheet molding compound (SMC). The SMC may be chosen for its ability to meet the primary requirements of equipment and/or safety certification organizations and/or its relatively rigid cleanable surfaces that are resistant to mold growth and compatible with the use of antimicrobial cleaners. In some embodiments, polyurethane foam may be used to fill the spaces and the polyurethane foam may comprise refrigerant and/or pentane to enhance the thermal insulating characteristics of the foam. Of course, in alternative embodiments, any other suitable material may be used to form the components of the AHU 100. In still other embodiments, the above-described shells and skins may comprise the foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide. Further, the shells and/or skins may be formed integrally with the above-described the foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, that fills the above-described spaces so that the shell/skin/space combinations may each comprise substantially unitary components of substantially homogenous material construction. It will be appreciated that the panel 124 may be constructed in any of the above-described manners and particularly may comprise the foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide.
Further, each of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 comprise an interior side surface 146, an interior rear surface 148, an exterior side surface, and an exterior rear surface. Similarly, each of the blower cabinet right shell 136 and the blower cabinet left shell 138 comprise an interior side surface 154, an interior rear surface 156, an exterior side surface, and an exterior rear surface. Most generally, and with a few exceptions, each of the pairs of interior side surfaces 146, interior rear surfaces 148, exterior side surfaces, exterior rear surfaces, interior side surfaces 154, interior rear surfaces 156, exterior side surfaces, and exterior rear surfaces are substantially mirror images of each other. More specifically, the above listed pairs of surfaces are substantially mirror images of each other about a bisection plane 162 (see
Referring now to
Still referring to
It will further be appreciated that one or more of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may comprise integrally formed electrical conduit apertures 212 which form openings between the interior of the heat exchanger cabinet 104 and the heat exchanger cabinet wall space. The electrical conduit apertures 212 are formed and/or shaped to closely conform to the shape of electrical lines and/or electrical conduit that may be passed through the electrical conduit apertures 212. However, in some embodiments, stabilizer pads 214 may be integrally formed about the circumference of the electrical conduit apertures 212 so that the electrical lines and/or electrical conduit may be more tightly held, isolated from the general cylindrical surface of the electrical conduit apertures 212, and/or to reduce friction of insertion of electrical lines and/or electrical conduit while retaining a tight fit between the stabilizer pads 214 and the electrical lines and/or electrical conduit. Further, the stabilizer pads 214 may be configured to interact with nuts of electrical conduit connectors so that the stabilizer pads 214 serve to restrict rotational movement of such nuts. By restricting such rotational movement of nuts, the stabilizer pads 214 may provide easier assembly and/or disassembly of the electrical conduit and related connectors to the heat exchanger cabinet 104. The electrical conduit apertures 212 are not simply holes formed in the interior side surfaces 146, but rather, are substantially tubular protrusions extending outward from the exterior side surfaces.
It will further be appreciated that one or more of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may comprise drain pan indentions 216. More specifically, the heat exchanger interior side surfaces 146 may generally comprise a sloped portion 218 sloped from a bottom side to the drain pan indentions 216 so that the bottom of the interior side surfaces 146 protrude further inward and the remainder of the sloped portion 218. The drain pan indentions 216 may form a concavity open toward the interior of the heat exchanger cabinet 104. The interior side surfaces 146 further comprises a front boundary wall 220 with integral drain tubes 222 extending into the concavity formed by the drain pan indentions 216. In some embodiments, the AHU 100 may be installed and/or operated in an installation orientation where the drain pan indention 216 of an interior side surface 146 is located below the refrigeration coil assembly 128 and so that fluids may, with the assistance of gravity, aggregate within the concavity of the drain pan indention 216 and thereafter exit the AHU 100 through the integral drain tubes 222. More specifically, the sloped portion 218 may direct fluids falling from the refrigeration coil assembly 128 toward the concavity formed by a drain pan indention 216. In this manner, the integrally formed slope portion 218, the drain pan indentions 216, and the front boundary wall 220 may serve as a condensation drain pan for the AHU 100 and may prevent the need to install a separate drain pan and/or to rearrange the configuration of a separate drain pan based on a chosen installation orientation for the AHU 100. Further, when in use, a drain pan indention 216 and sloped portion 218 may cooperate with airflow generated by blower assembly 130 to direct condensation to the integral drain tubes 222.
It will further be appreciated that one or more of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may comprise integral assembly recesses 224. Assembly recesses 224 may be located near a lower end of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134. Assembly recesses 224 may accept mounting hardware therein for joining the heat exchanger cabinet 104 to the blower cabinet 102. In this embodiment, the recesses 224 are substantially shaped as box shaped recesses, however, in alternative embodiments, the recesses 224 may be shaped any other suitable manner. Additionally, one or more of the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may comprise integral fastener retainer protrusions 226. Fastener retainer protrusions 226 may be used to hold threaded nuts or other fasteners. Further, in other embodiments, retainer protrusions 226 may themselves be threaded or otherwise configured to selectively retaining fasteners inserted therein. Still further, the heat exchanger cabinet right shell 132 and the heat exchanger cabinet left shell 134 may comprise support bar slots 228 configured to receive the opposing ends of a selectively removable structural crossbar.
Referring now to
It will further be appreciated that one or more of the blower cabinet right shell 136 and the blower cabinet left shell 138 may comprise filter mounting channels 234 bound above and below by filter rails 236. The filter rails 236 protrude inwardly from the remainder of the respective interior side surfaces 154 so that complementary shaped structures of a filter may be received within the channels 234 and retained within the channels 234 by the filter rails 236. In this embodiment, a filter may be selectively inserted into the blower cabinet 102 by aligning the filter properly with the filter mounting channels 234 and sliding the filter toward the AHU back side 112. Of course, the filter may be selectively removed from the blower cabinet 102 by sliding the filter away from the AHU back side 112. In some embodiments, the filter mounting channel 234 may be sloped downward from the front to the back of the AHU 100. Further, in some embodiments, one or more of the filter rails 236 may comprise filter protrusions 238 which may serve to more tightly hold a filter inserted into the filter mounting channels 234. In some embodiments, one or more of the blower cabinet right shell 136 and the blower cabinet left shell 138 may comprise fastener retainer protrusions 226. Still further, one or more of the blower cabinet right shell 136 and the blower cabinet left shell 138 may comprise integral assembly recesses 240. Assembly recesses 240 may be located near an upper end of the blower cabinet right shell 136 and the blower cabinet left shell 138. Assembly recesses 240 may accept mounting hardware therein for joining the blower cabinet 102 to the heat exchanger cabinet 104. In this embodiment, the recesses 240 are substantially shaped as box shaped recesses, however, in alternative embodiments, the recesses 240 may be shaped in any other suitable manner.
Referring now to
While many of the features of the heat exchanger cabinet right shell 132, heat exchanger cabinet left shell 134, blower cabinet right shell 136, blower cabinet left shell 138, and/or panels 120,124 may be formed integrally to those respective components in a single molding and/or injection process. However in alternative embodiments, the various integral features may be provided through a series of moldings, and/or injections, thermal welding, gluing, or any other suitable means of assembling a singular structure comprising the various features as is well known to those skilled in the art. Further, one or more of the components disclosed herein as being formed integrally, in some embodiments, may be formed from multiple components coupled together.
Referring now to
While many of the features of the heat exchanger cabinet right shell 132, heat exchanger cabinet left shell 134, blower cabinet right shell 136, blower cabinet left shell 138, and/or panels 120,124 may be formed integrally to those respective components in a single molding and/or injection process. However in alternative embodiments, the various integral features may be provided through a series of moldings, and/or injections, thermal welding, gluing, or any other suitable means of assembling a singular structure comprising the various features as is well known to those skilled in the art. Further, one or more of the components disclosed herein as being formed integrally, in some embodiments, may be formed from multiple components coupled together.
Referring now to
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In some embodiments, panels and/or AHU components constructed of foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may provide acceptable flatness, rigidity, and/or insulative properties to prevent condensation while also resisting burning and/or charring of the components. In some cases, the panels and/or AHU components may, without substantial further processing provide acceptable aesthetic qualities, such as a desirable smoothness and/or glossiness.
In some cases, panels and/or AHU components constructed of foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may be constructed by die cutting the material to complement skin shapes and then vacuum forming or pressure forming plastic skin sheets on as many as five sides of the die cut material followed by cutting the skinned sheet out in line of a thermoform machine. The thermoform machine may receive generally rectangular shapes and then punch out shapes and holes after thermoforming. Sheets may be extruded to match colors and cut to meet shape requirements. In some embodiments, some components may be die cut and thereafter pressure-formed to produce contoured surfaces. In some cases, sheets and/or skins may be coextruded with components formed of foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, so that dissimilar materials are simultaneously extruded. Foamed components may be joined to other components by vertically dropping like a parison and/or by gluing the foamed components to the other components. The components comprising foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may be caste into shapes, coextruded with reinforcements, and/or provided aesthetically pleasing skinned surfaces using heat, pressure, and/or chemicals. In some cases, injection molding, two shot molding for foam portions and skin portions, and insert molding the foam portions are contemplated.
In some cases, panels, doors, and/or other removable barriers comprising foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may be attached to other components by sandwiching a bracket between thermoformed skin and the foam, mechanically and/or chemically fastening the foam to the other component, using screws and/or other fasteners to join the component to other components, using magnetic strips, gluing and/or adhesion mounting, providing the component with a feature complementary to a feature of the other component to which it is joined, and/or by packing or subsequently sealing the barriers to the other components. Panels, doors, and/or other removable barriers comprising foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may be provided with seals using exiting seal bead equipment, forming flush mounting surfaces in the components, using a peel and stick gasket material, using rib or other types of features to create hard seals on recesses of the components, using wiper style gasket material to seal in a frame so that internal pressures assist in maintaining the seal, using extruded rubber tubes seals such as those used in automotive applications, and/or the like. Seal attachments may be accomplished by utilizing insert mold seals, coextruding the seals with other components, gluing the seals to the panels, doors, and/or other removable barriers, using adhesive tape to attach the seals, ultrasonically welding the seals in place, heat staking the seals in place, and/or otherwise mechanically fastening the seals in place. It will further be appreciated that this disclosure contemplates retrofitting exiting cabinets that initially comprise foil faced fiberglass with panels, doors, and/or other removable barriers comprising foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide. In some cases, components comprising foamed and/or unfoamed polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value for a given application, in some cases, an R Value of about 4.2 or greater, such as, but not limited to, polyetherimide, may be pressure formed onto a side of a preexisting wall that is exposed to airflow so that HVAC system noise is reduced.
At least one embodiment is disclosed and variations, combinations, and/or modifications of the embodiment(s) and/or features of the embodiment(s) made by a person having ordinary skill in the art are within the scope of the disclosure. Alternative embodiments that result from combining, integrating, and/or omitting features of the embodiment(s) are also within the scope of the disclosure. Where numerical ranges or limitations are expressly stated, such express ranges or limitations should be understood to include iterative ranges or limitations of like magnitude falling within the expressly stated ranges or limitations (e.g., from about 1 to about 10 includes, 2, 3, 4, etc.; greater than 0.10 includes 0.11, 0.12, 0.13, etc.). For example, whenever a numerical range with a lower limit, Rl, and an upper limit, Ru, is disclosed, any number falling within the range is specifically disclosed. In particular, the following numbers within the range are specifically disclosed: R=Rl+k*(Ru−Rl), wherein k is a variable ranging from 1 percent to 100 percent with a 1 percent increment, i.e., k is 1 percent, 2 percent, 3 percent, 4 percent, 5 percent, . . . 50 percent, 51 percent, 52 percent, . . . , 95 percent, 96 percent, 97 percent, 98 percent, 99 percent, or 100 percent. Moreover, any numerical range defined by two R numbers as defined in the above is also specifically disclosed. Use of the term “optionally” with respect to any element of a claim means that the element is required, or alternatively, the element is not required, both alternatives being within the scope of the claim. Use of broader terms such as comprises, includes, and having should be understood to provide support for narrower terms such as consisting of, consisting essentially of, and comprised substantially of. Accordingly, the scope of protection is not limited by the description set out above but is defined by the claims that follow, that scope including all equivalents of the subject matter of the claims. Each and every claim is incorporated as further disclosure into the specification and the claims are embodiment(s) of the present invention.
Claims
1. An HVAC airflow duct, comprising:
- a polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value.
2. The HVAC airflow duct of claim 1, wherein the polymeric material is a foamed material.
3. The HVAC airflow duct of claim 1, wherein the polymeric material is an unfoamed material.
4. The HVAC airflow duct of claim 1, wherein the polymeric material comprises polyetherimide.
5. The HVAC airflow duct of claim 1, wherein the duct comprises a removable panel.
6. The HVAC airflow duct of claim 5, wherein the removable panel comprises the polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value.
7. The HVAC airflow duct of claim 5, wherein the removable panel comprises polyetherimide.
8. The HVAC airflow duct of claim 7, wherein the polyetherimide is foamed.
9. The HVAC airflow duct of claim 7, wherein the polyetherimide is unfoamed.
10. The HVAC airflow duct of claim 7, wherein the panel comprises a hook.
11. The HVAC airflow duct of claim 10, wherein the hook comprises polyetherimide.
12. The HVAC airflow duct of claim 11, wherein the hook is integrally formed with the remainder of the panel.
13. An HVAC cabinet, comprising:
- an airflow passage at least partially defined by a component comprising a polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or and/or maintains or exceeds a minimum insulation value.
14. The HVAC cabinet of claim 13, wherein the component is a composite component comprising a skin joined to the component.
15. The HVAC cabinet of claim 13, wherein the component is a removable panel.
16. The HVAC cabinet of claim 15, further comprising:
- a seal carried by the removable panel.
17. The HVAC cabinet of claim 15, further comprising:
- a panel mounting feature carried by the removable panel.
18. The HVAC cabinet of claim 17, wherein the panel mounting feature comprises a hook.
19. The HVAC cabinet of claim 17, wherein the panel mounting feature comprises the polymeric material that meets UL723 and/or ASTM E84 of at least 25/50 or better and/or maintains or exceeds a minimum insulation value.
20. The HVAC cabinet of claim 13, wherein the cabinet further comprises at least one of a furnace cabinet and an evaporator cabinet.
Type: Application
Filed: Jan 24, 2014
Publication Date: Jul 31, 2014
Inventors: Richard Lee Jameson (Tyler, TX), Mark Anthony Ezzo (Tyler, TX), Michael Charles Davenport (Fort Smith, AR)
Application Number: 14/164,108
International Classification: F24F 7/04 (20060101);