US20210003313A1 - Louver assembly - Google Patents
Louver assembly Download PDFInfo
- Publication number
- US20210003313A1 US20210003313A1 US16/502,502 US201916502502A US2021003313A1 US 20210003313 A1 US20210003313 A1 US 20210003313A1 US 201916502502 A US201916502502 A US 201916502502A US 2021003313 A1 US2021003313 A1 US 2021003313A1
- Authority
- US
- United States
- Prior art keywords
- louver assembly
- leg portion
- water
- housing
- sill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 8
- 230000003116 impacting effect Effects 0.000 claims description 2
- 239000003570 air Substances 0.000 description 25
- 238000009423 ventilation Methods 0.000 description 6
- 239000012080 ambient air Substances 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000002459 sustained effect Effects 0.000 description 4
- GYDJEQRTZSCIOI-UHFFFAOYSA-N Tranexamic acid Chemical compound NCC1CCC(C(O)=O)CC1 GYDJEQRTZSCIOI-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
- F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/52—Weather protecting means, e.g. against wind, rain or snow
Abstract
Description
- The present invention relates generally to louver assemblies that helps regulate the inlet of outside ambient air and, more particularly, to a louver assembly which inhibits air-born particulates such as rain droplets that are entrained in the ambient air from passing through the lover assembly and into the building or enclosure with which the louver assembly is associated.
- Ventilation/HVAC systems for buildings and other enclosures are well known in the art. A core component of many ventilation systems is the need to regulate the influx of outside ambient air. One aspect of this regulation is the desired ability to prevent particulate matter from entering the ventilation system along with the outside ambient air, and louver assemblies have therefore been traditionally utilized to help control the flow of ambient air and any entrained particulate matter.
- Recent natural disasters and code modifications have placed larger burdens on the performance of louver assemblies that are integrated into various ventilation systems. In particular, recent code modifications have centered on reducing or eliminating the amount of rain water that is permitted to pass through the louver assembly and into the ventilation system. On this issue, louver assemblies that attempt to separate water and other particles from air flowing into buildings are generally known in the art. As exemplified by U.S. Pat. No. 5,839,244, such prior art louver assemblies typically include a plurality of curved, spaced blades that define a plurality of spaced, serpentine-shaped air passageways therebetween. The air passageways direct air from the exterior of the building to the interior of the building for air conditioning of the building. When air passes into the building through the air passageways of the louver assembly, the water particles in the air, which are heavier than the gas molecules in the air, cannot turn through the serpentine-shaped contours in the air passageways. The water molecules therefore strike the walls of the blades, agglomerate into drops and flow by gravity down the blades and out of the louver assembly at the front face thereof.
- Buildings in areas of the world that are especially prone to hurricanes, however, face much tougher problems with the design of louvers. In such hurricane zones, wind-driven rain may sometimes pass through the serpentine passageways and into the building, despite existing blades being designed to inhibit or prevent this. In other situations, the blades of the louver may be successful in capturing the entrained rainwater and directing it to the bottom of the louver. Sustained, direct, positive airflow due to wind at the front face of the louver, however, may inhibit draining of the captured rainwater, and in some situations may actually push accumulated water through the lover and into the building.
- In hurricane zones, such as Miami-Dade County in the state of Florida, stringent building codes have recently been adopted which require louvers, dampers and the like to pass stringent tests for wind and wind-driven rain resistance. For example, AMCA 550 is a standard that establishes uniform laboratory test methods and minimum performance ratings for water rejection capabilities of louvers that keep water infiltration to a minimum. Tests conducted in accordance with the requirements of this standard are intended to demonstrate the acceptability of the louver assembly for installation in facilities that will remain in operation during a high velocity wind condition and where water infiltration must be kept to manageable amounts.
- In view of the above, there is a need for a louver assembly that substantially minimizes or prevents the accumulation and push-through of captured rainwater during high velocity wind conditions, and which meets the stringent high-velocity wind-driven rain resistance requirements imposed by various building codes.
- In view of the foregoing, it is an object of the present invention to provide a louver assembly capable of resisting the influx of wind-driven water without the use of a damper.
- It is another object of the present invention to provide a louver assembly that facilitates draining of accumulated water, even in the presence of direct, sustained winds at the face of the louver assembly.
- It is another object of invention to provide louver assembly that is designed to meet the stringent criteria established by the Florida Building Code and Miami-Dade County Building Code, including providing high volume flow rate, impact resistance, and/or protection against water penetration and high wind-loads.
- It is another object of the invention to provide a louver assembly that meets and/or exceeds the requirements of AMCA 550.
- These and other objects are achieved by the present invention.
- According to an embodiment of the present invention, a louver assembly for placement in an opening for regulating the inlet of air includes a first blade stack having a plurality of elongated blades mounted within a frame having an upper frame member and a lower frame member, the lower frame member defining a sill, and a windbreak positioned adjacent to a front face of the louver assembly and extending from a point above the sill to a point below the sill. The windbreak is configured to divert wind at the front face of the louver assembly above the sill to facilitate draining of water from the louver assembly.
- According to another embodiment of the invention, a louver assembly for regulating air passage through an opening includes a first stack of blades having a housing defined about said blades, said housing being supported upon a bottom sill of said opening, a water passage defined between said housing and said bottom sill, said water passage allowing water entering said louver assembly and impacting said blades to drain from said housing, and an air deflection shield arranged adjacent to said water passage, said air deflection shield being fixed to said housing and extending across said water passage in a spaced-apart relationship, thereby permitting water to drain from said housing.
- According to yet another embodiment of the present invention, a method of ensuring proper drainage in a louver assembly oriented within an opening includes the steps of arranging a first stack of louver blades within a housing, mounting the housing within the opening, the housing being supported on a bottom sill of the opening and defining a water passageway therebetween, and arranging an air deflection shield adjacent the water passageway, the air deflection shield being disposed in a spaced-apart relationship from the water passageway and permitting water to drain from the housing via the water passageway.
- The present invention will be better understood from reading the following description of non-limiting embodiments, with reference to the attached drawings, wherein below:
-
FIG. 1 is a simplified schematic front plan view of a louver assembly according to an embodiment of the present invention; -
FIG. 2 is a cross-sectional view of the louver assembly, taken along line D-D ofFIG. 1 . -
FIG. 3 is a cross-sectional view of the louver assembly, taken along line C-C ofFIG. 1 . -
FIG. 4 is an enlarged detail view of a forward windbreak of the lover assembly ofFIG. 1 . - With reference to
FIGS. 1-3 , alouver assembly 10 according to an embodiment of the invention is illustrated. Thelover assembly 10 is designed to be inserted within an opening in a wall of a building to permit outside air to flow therethrough into the building while removing water particles from the air to prevent excess moisture from entering the building. While thelouver assembly 10 is disclosed herein as being disposed within an opening in a wall of a building or other structure, it will be readily appreciated, however, that thelouver assembly 10 may be integrated into any known ventilation system, including those systems having stand-alone components, without departing from the broader aspects of the present invention. - As illustrated in
FIGS. 1-3 , thelouver assembly 10 includes a generally rectangularouter frame 12 formed from generally U-shaped sleeves (including, for example, top, bottom, left and right sleeves). The sleeves, and thus theframe 12, may be formed from aluminum, although other materials known in the art may also be utilized. The sleeves of theouter frame 12 are configured to receive therein the walls defining an opening in a building or structure, for securely positioning and retaining thelouver assembly 10 within the opening. Within theouter frame 12 are mounted left and right jamb members that receive and contain therebetween one or more blade stacks, as discussed hereinafter. In an embodiment, as illustrated inFIGS. 2 and 3 , thelouver assembly 10 includes first andsecond blade stacks first blade stack 14 is bounded by left andright jamb members second blade stack 16 is bounded by left andright jamb members right jamb members FIGS. 2 and 3 illustrate two blade stacks 14, 16 more or fewer than two blade stacks may be utilized without departing from the broader aspects of the invention. - In an embodiment, as shown in
FIGS. 2 and 3 , thefirst blade stack 14 includes a plurality of horizontally-extendingblades 26 having one or more hooks, tabs, projections or contours (e.g.,tab 28,hook 30, projection 32) that are configured and positioned to inhibit the inflow of rain-driven rainwater through thefirst blade stack 14. A variety of horizontal blade configurations having any arrangement of hooks, tabs, projections and/or contours may be utilized without departing from the broader aspects of the invention. - The
second blade stack 16, for its part, includes a plurality of vertically-extendingblades 34 likewise having one or more hooks, tabs, projections or contours (e.g.,hook 36, projection 38) that are configured and positioned to similarly inhibit the inflow of rain-driven rainwater through thesecond blade stack 16. Like theblades 26 offirst blade stack 14, theblades 34 of thesecond blade stack 16 may have any desired arrangement of hooks, tabs, projections and/or contours. Theblades 34 of thesecond blade stack 16 define a plurality of spaced, serpentine-shaped passageways therebetween configured to permit the inflow of air, but inhibit the inflow of rainwater. - With specific reference to
FIG. 3 , thelouver assembly 10 includes adrain pan 40 defining a sill, that is received on the bottom sleeve of theouter frame 12, and above which is positioned the bottom edges of therespective blade stacks drain pan 40 extends between the left and right sleeves of theouter frame 12 and includes a generally planar portion 42 that sits atop the bottom sleeve of theouter frame 12, a generally vertically extending leg member 44 located rearward of thesecond blade stack 16, and anangled leg member 46 extending from the vertical leg member 44 generally upwards and towards the front of thelouver assembly 10. In an embodiment, thedrain pan 40 may also include a downwardly dependingleg member 48 that is folded or bent over the front edge of the bottom sleeve of theouter frame 12. It is contemplated that the planar portion 42 may be angled slightly from back to front (i.e., the back of the planar portion 42 adjacent to the vertical leg member 44 is at a vertical height above the front of the planar portion 42 adjacent to the leg member 48) to facilitate draining of sequestered rainwater from thelouver assembly 10, as discussed hereinafter. - As further illustrated in
FIG. 3 , thelouver assembly 10 also includesforward leg member 50 that extends forwardly and downwardly from afront face 52 of thelouver assembly 10. In particular, theforward leg member 50 includes a generallyhorizontal leg portion 54 that is mounted to thelouver assembly 10 at a position spaced vertically from the top surface of thedrain pan 40, a downwardly dependingleg portion 56 that extends from thehorizontal leg portion 54 at a generally 90 degree angle to a point below thedrain pan 40 and the planar portion 42 thereof, and adrip edge 58 that extends downwardly and outwardly from the downwardly dependingleg portion 56. The configuration and position of theforward leg member 50 defines achannel 60 at the front face of thelover assembly 10 between theforward leg member 50, and thedrain pan 40 and bottom sleeve of the outer frame. As discussed below, theforward leg member 50 functions as a windbreak or air deflection shield, which extends from above thedrain pan 40 to below the sill, which facilitates draining of sequestered rainwater from thelouver assembly 10. The configuration and position of theforward leg member 50 is more clearly illustrated inFIG. 4 . In an embodiment, thehorizontal leg portion 54 is spaced between about 0.5 inches to about 12 inches, and more preferably about 1 inch to about 2 inches, in a vertical direction, from a top surface of the drain pan or sill. - In an embodiment, the blades of the first blade stack and the second blade stack, the drain pan, and the forward leg member forming the windbreak/air deflection shield may be formed from aluminum or other metals, although other materials known in the art may also be utilized without departing from the broader aspects of the invention.
- In operation, air is permitted to travel through the
louver assembly 10 and into a building or structure within which thelouver assembly 10 is positioned through the passageways defined by theblades 26 of thefirst blade stack 14, and then through the passageways defined by theblades 34 of thesecond blade stack 16. As is known in the art, as the air traverses the passageways defined by the spaced-apart blades of the first and second blade stacks 14, 16, the water particles in the air, which are heavier than the gas molecules in the air, cannot turn through serpentine-shaped contours. The water molecules therefore strike the walls of theblades assembly 10 and into the building. The water molecules that have been trapped by theblades drain pan 40. - Typically, the accumulated water is allowed to drain from the
drain pan 40 and out of the front of thelouver assembly 10, away from the opening in which thelouver assembly 10 is installed. As discussed above, however, in high wind conditions, sustained and direct wind pressure at the front face of thelouver assembly 10 can inhibit or prevent draining of the rainwater collected on thedrain pan 40 at the sill, and can even push the collected water through thelouver assembly 10 and into the structure. Importantly, however, theforward leg member 50 serves as a windbreak, substantially minimizing or preventing wind at the forward face of thelouver assembly 10 from acting on the rainwater accumulated on thedrain pan 40. In particular, wind at the front of thelover assembly 10 is directed over and above theforward leg member 50, above the accumulated water on thedrain pan 40, allowing the water accumulated on thedrain pan 40 to drain through thechannel 60 in the direction of arrow A, even where direct, sustained wind at the forward face of thelouver assembly 10 is present. - In addition, the
forward leg member 50 allows water to run down the face of the building, and across the face of thelouver assembly 10, while keeping direct positive wind pressure from blowing this water back into thelouver assembly 10. - It has been discovered through testing that the
louver assembly 50 containing aforward leg member 50 that functions as a windbreak substantially minimizes the amount of water that is pushed through thelover assembly 10 in high velocity wind conditions. Accordingly, such alouver assembly 10 has been shown to meet the requirements of AMCA 550 for wind-driven rain resistance. - Although this invention has been shown and described with respect to the detailed embodiments thereof, it will be understood by those of skill in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed in the above detailed description, but that the invention will include all embodiments falling within the scope of this disclosure.
Claims (19)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/502,502 US20210003313A1 (en) | 2019-07-03 | 2019-07-03 | Louver assembly |
PCT/US2020/039619 WO2021003057A1 (en) | 2019-07-03 | 2020-06-25 | Louver assembly |
ZA2021/09008A ZA202109008B (en) | 2019-07-03 | 2021-11-12 | Louver assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/502,502 US20210003313A1 (en) | 2019-07-03 | 2019-07-03 | Louver assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20210003313A1 true US20210003313A1 (en) | 2021-01-07 |
Family
ID=74066372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/502,502 Pending US20210003313A1 (en) | 2019-07-03 | 2019-07-03 | Louver assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US20210003313A1 (en) |
WO (1) | WO2021003057A1 (en) |
ZA (1) | ZA202109008B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11208801B1 (en) * | 2021-01-28 | 2021-12-28 | Span Construction & Engineering, Inc. | Modular structural louver and methods of use |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5782051A (en) * | 1996-03-11 | 1998-07-21 | Lavoie; John F. | Water resistant louver |
WO2009044847A1 (en) * | 2007-10-03 | 2009-04-09 | Robin Hood Co., Ltd. | Waterproof and snow-proof ventilation louver |
US20180112455A1 (en) * | 2015-05-27 | 2018-04-26 | Pella Corporation | Water management systems for fenestration products |
US20200284466A1 (en) * | 2017-02-22 | 2020-09-10 | Airmaster A/S | Air vent |
US11266142B1 (en) * | 2018-09-26 | 2022-03-08 | Jeremy Cooper Bishop | Method and apparatus for excluding rodents and other animals from a structure |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2154638A (en) * | 1984-02-23 | 1985-09-11 | Allmand Smith Peter John | Sills |
US5906083A (en) * | 1997-08-04 | 1999-05-25 | Construction Specialties, Inc. | Modular louver system |
KR20030036299A (en) * | 2003-02-26 | 2003-05-09 | 엘지전자 주식회사 | Built-in type outdoor unit for air-conditioner |
US8286388B2 (en) * | 2007-07-19 | 2012-10-16 | Milgard Manufacturing Inc. | Jalousie window |
US10760817B2 (en) * | 2008-10-17 | 2020-09-01 | Mestek, Inc. | Louver assembly |
US10837671B2 (en) * | 2016-11-29 | 2020-11-17 | Air Distribution Technologies Ip, Llc | Wind driven rain performance, FEMA impact-rated louver |
-
2019
- 2019-07-03 US US16/502,502 patent/US20210003313A1/en active Pending
-
2020
- 2020-06-25 WO PCT/US2020/039619 patent/WO2021003057A1/en active Application Filing
-
2021
- 2021-11-12 ZA ZA2021/09008A patent/ZA202109008B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5782051A (en) * | 1996-03-11 | 1998-07-21 | Lavoie; John F. | Water resistant louver |
WO2009044847A1 (en) * | 2007-10-03 | 2009-04-09 | Robin Hood Co., Ltd. | Waterproof and snow-proof ventilation louver |
US20180112455A1 (en) * | 2015-05-27 | 2018-04-26 | Pella Corporation | Water management systems for fenestration products |
US20200284466A1 (en) * | 2017-02-22 | 2020-09-10 | Airmaster A/S | Air vent |
US11266142B1 (en) * | 2018-09-26 | 2022-03-08 | Jeremy Cooper Bishop | Method and apparatus for excluding rodents and other animals from a structure |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11208801B1 (en) * | 2021-01-28 | 2021-12-28 | Span Construction & Engineering, Inc. | Modular structural louver and methods of use |
US11643809B2 (en) | 2021-01-28 | 2023-05-09 | Span Construction & Engineering, Inc. | Modular structural louver and methods of use |
Also Published As
Publication number | Publication date |
---|---|
WO2021003057A1 (en) | 2021-01-07 |
ZA202109008B (en) | 2022-08-31 |
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