CA2483950A1 - Adjustable ultraviolet lamp mounting device - Google Patents
Adjustable ultraviolet lamp mounting device Download PDFInfo
- Publication number
- CA2483950A1 CA2483950A1 CA 2483950 CA2483950A CA2483950A1 CA 2483950 A1 CA2483950 A1 CA 2483950A1 CA 2483950 CA2483950 CA 2483950 CA 2483950 A CA2483950 A CA 2483950A CA 2483950 A1 CA2483950 A1 CA 2483950A1
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- Canada
- Prior art keywords
- bracket
- housing
- lamp
- bulb
- duct
- Prior art date
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Abstract
A device for mounting a UV bulb includes a housing having a hole therein, a fixed bracket and an adjustable bracket, the fixed bracket is connected to the housing and the adjustable bracket is rotatably mounted to the side bracket, the adjustable bracket also has means for mounting a UV bulb such that when said UV bulb is mounted to the adjustable bracket, the bulb can be inserted through the hole in the housing and rotated through an arc of approximately 90 degrees.
Description
the warmer air may condense onto the cool ventilation ducts: Also, the humidity from warm air passing over a chiller used to. cool the air circulating through the HVAC
will likewise condense on the chiller. In any case, HVAC systems are prone to having moisture therein.
[0004] The dark and damp conditions within the ducts of an HVAC system are ' conducive to the rapid growth and reproduction of contaminants such as molds, spores;
bacteria, viruses and mildews which may be harmful to the people for whom the air traveling therethrough is intended. HVAC systems thus become a breeding ground for these contaminants. Inhabitants may suffer adverse physical reactions as a result, especially if they are allergic to any of the contaminants. This problem is exacerbated when the inhabitants themselves introduce, additional contaminants into the HVAC system that may then multiply in the contaminant friendly HVAC environment and spread to other inhabitants located within the structure. Air filters have been introduced into HVAC systems in an attempt to remove contaminants passing therethrough before they reach inhabitants.
However, these filters often become damp themselves and provide conditions which foster growth and reproduction of the contaminants.
[0005] It is known that light of the "C" band of the ultraviolet spectrum, with wavelengths between approximately 220 and 288 manometers, ("UV light") can control .
growth of or kill most contaminants currently known to exist within HVAC
systems. The longer the period of time a unit of air is exposed to UV light, and the greater the density of the UV light that a unit of air is exposed to, the greater the number of contaminants within the unit of light will be killed thereby. Lamps capable of emitting UV light typically comprise a long, hollow cylinder containing one or more gasses therein that will, upon being excited by electric current, emit UV light. These UV lamps primarily radiate UV light in a direction (054557-353053) TDO-RED ~t8246513 v.l -2- SUMMARY OF THE INVENTION
(OOb8] It is one of the principal objectives to provide an air treatment or purification device capable of efficiently controlling or killing contaminants within an HVAC system.
[0009] It is another objective to provide a device including one .or more UV
light emitting lamps to flood UV light over a large volume of air within a standard HVAC air duct.
[0010] It is yet another objective to provide a device including one or more standard UV light emitting lamps to flood UV light over a large cross-sectional area of air within a stamdard HVAC air duct.
[0011] It is still another objective to provide an ultraviolet device that can be mounted within an HVAC air duct that only requires access to one side of the air duct for mounting the device.
[0012] It is a further objective to provide a device that has a removable bracket that allows the UV lamp to be mounted within the HVAC air duct at different angles to optimize ~e light coverage within the duct.
[0013] It is another objective to provide an adjustable mounting bracket assembly for a UV lamp so that the UV lamp can be mounted within a duct at a variety of different angles.
[0014] It is a further objective to provide art adjustable mounting bracket assembly for UV lamps so that longer UV bulbs can be placed into a duct.
[0015] It is a further objective to provide an adjustable mounting bracket assembly to facilitate the mounting of a UV lamp to avoid obstacles, such as a cooling coil, within a duct.
(0016] These and other objectives will become apparent upon examining the drawings and figures together with the accompanying written description thereof.
(054557-353053) TDO-RED #18246513 v.l -4-BRIEF DESCRIPTION OF DRAWINGS
[0017) Figure 1 is a perspective view of the UV device, shown without a cover, and a straight-mounted UV lamp.
[0018] Figure 2 is an exploded perspective view of the UV device shown with a straight mounting piece.
[0019] Figure 3 is a second exploded perspective view of the UV device shown with an angled mounting piece [0020] Figure 4 is a top view of the device, shown without the cover, including the wiring configuration and an angularly-mounted UV lamp.
[0021 ] Figure 5 is a bottom view of the device.
[0022] Figure 6 is a side view of the device with a straight-mounted UV lamp mounted to an air duct as seen looking down the duct with airflow into the page.
[0023] Figure 7 is a side view of the device with an angularly-mounted UV lamp mounted to an air duct as seen looking down the duct with airflow into the page.
[0024] Figure 8 is a side view of two devices with an angularly-mounted L1V
lamps mounted to an air duct as seen looking down the duct with airflow into the page.
[0025] Figure 9 is a top view of two devices with angularly-mounted UV lamps mounted to an air duct as seem with air flow from left to right.
[0026] Figure 10 is a perspective view of another embodiment of the UV device, shown without a cover:
[0027] Figure 11 is an exploded view of an adjustable mounting bracket assembly.
(054557-353053) TDO-RED #8246513 v.l _s-[0028] Figure 12 is a perspective view of he adjustable mounting bracket assembly with the UV lamp in a first position.
[0029] Figure 13 is a perspective view of the adjustable mounting bracket assembly with the UV lamp in a second position.
[0030] Figure 14 is a perspective view of the adjustable mounting bracket assembly with the UV lamp in a third position.
(054557-353053) TDO-RED ~t8246513 v.l _( _ DETAILED DESCRIPTION OF THE DRAWINGS
[0031] Figure l depicts one embodiment of the UV device 10 of the present invention. As shown in Figure l, the UV device 10 has a housing 12 for mounting the device to an air duct 14 (Figures 6; 7, 8, and 9). The housing 12 has an interior surface 16 and an exterior surface 18 (Figure 5). Additionally, the device l O has a bottom portion 20 and a top portion 22 integrally formed with the housing 12. The housing 12 includes four mounting holes 24, 26, 28, and 30 (Figure 4) for mounting the device 1 O to the air duct 14 using bolts, screws, or any other appropriate fasteners. The configuration of the mounting holes 24; 26, 28, and 30 can be adjusted to accommodate other mounting methods and devices.
A left side flange 32 and a right side flange 34 are integrally formed with the housing 12: Each of the side flanges 32 and 34 includes a hole 36 for attaching a cover 38 (Figures 2 and 3) to the device using bolts, screws, or any other appropriate fasteners.
[0032] The housing 12, bottom portion 20, top portion 22, side flanges 32 and 34, and cover 3$ are preferably formed of coated steel, such as a stainless or carbon steel.
Alternately; the housing 12, bottom portion 20, top portion 22, side flanges 32 and 34, and cover38 can be formed of any material that is sufficiently strong to support the UV device 10 when mounted to an air duct l4, inhibits the transmission of UV light, and withstand the temperatures of an HVAC duct. For example, some injection molded plastics with UV
inhibitors maybe able to provide adequate support, preventUV light from escaping the air duct 14, and withstand the temperatures of an HVAC duct 14.
[0033] Now looking at Figure 4, an electrical power assembly 40 is mounted through a hole (not shown) in the bottom portion 20 of the device 10. The power assembly 40 has an outer end 42 and an inner end 44. When the power assembly 40 is properly mounted through (054557-353053]
TDO-RED #8246513x.1 _'~_ into which the UV lamp 60 is being mounted. Other angles can be used to obtain different coverage areas, so long as the angle used allows the device 10 to be mounted to the side of the air duct 14. For example, when utilizing the device l0 incorporating the angled mounting bracken 106 in a rectangular duct (not shown), rather than the square duct 14 illustrated in Figure 7, the angle B cari be altered to orient the longitudinal axis 122 of the UV lamp 60 into a corner of the rectangular duct, or otherwise, as necessary to increase the area of coverage of UV light within the duct 14.
[0042] As described above; because the UV lamp 60 only emits UV light in directions perpendicular to the lamp's 60 surface, the standard UV lamp 60 only emits light in a circular band extending radially outward from the longitudinal axis 122 of the UV lamp 60. Thus, as illustrated in Figure 7, the UV lamp 60 creates a cylinder of UV light around the tubular UV
lamp 60 for the length of the lamp 60. As a result, as shown in Figure 7, two cross-sectional triangular areas 134 and 136 within the duct 14 will not be flooded in UV
light. An upper angular area 134 is defined within the duct 14 by three points 138, 140, and 142. The first point 138 is located at the intersection of the UV lamp 60 and the left side 124 of the duct 14.
The second point 140 is located at the intersection of the left side 124 and upper side 128 of the duct 14. The third point 142 is located at the point along the.upper side 128 of the duct 14 that is intersected by a line, drawn perpendicular to the longitudinal axis 122 of the UV lamp 60; originating from the intersection of the UV lamp 60 and the left side 124 of the duct 14.
A second triangular area 136 is defined within the duct 14 by an additional three points 144, 146, and 148. The first point 144 is located at the point along the lower side 130 of the duct 14 that is intersected by a line, drawn perpendicular to the longitudinal axis 122 of the UV
lamp 60, originating from the first end 86 of the UV lamp 60. The second point 146 is (054557-353053) TDO-RED #f8246513 v:l . -13-located at the point along the right side 126 of the duct 14 that is intersected liy a line; drawn : -perpendicular to the longitudinal axis 122 of the UV lamp 60; originating from the first end 86 of the UV lamp 60. The third point 148 is located at the intersection of the right side 126 and lower side 130 of the duct 14. Accordingly, the effectiveness of the embodiment of the device l0 .shown in Figure 7. is influenced by the size and shape of the air duct 14, the angle B of the UV lamp 60, the distance the UV lamp 60 is mounted from the upper side 128 of the duct 14 as measured along the left side 124 of the duct 14; and the length of the UV lamp 60:
'tee embodiment of the device 10 shown in Figure 6 is most desirable when the length of the standard UV lamp 60 employed allows the UV lamp 60 to be mounted closer to the upper side 128 of the duct 14, to' extend the longitudinal axis 122 of the UV lamp 60 closer to the intersection'of the right side 126 and lower side 130 of the duct 14; and be mounted at an angle B that minimizes the area of triangles 134 and 136.
[0043] Figures 8 and 9 illustrate an embodiment of the present invention using two devices 10, each incorporating the angled mounting bracket 1U6. Figure 8 illustrates the embodiment as seen looking down the length of the duct 14 with airflow into the page.
Figure 9 illustrates ahe embodiment as seen from above the duct, with airflow.
frorri left to ', right. In this embodiment, a first device 150 is mounted a distance C upstream of a second device 152. Distance- C should be at least approximately four inches for optimum effectiveness [0044] As shown in Figure 8, the two devices 150 and 152 are mounted such that the .
longitudinal axis 122 of the UV lamp 60 of the first device 150 crosses the longitudinal axis 122 of the UV lamp 60 of the second device 152 to alleviate the individual shortcomings of each of the UV lamps 60. The two devices 150 and 152 are mounted such that the (054557-353053) TDO-RED ~i8246513v.1 -14-longitudinal axis 122 of each lamp 60 forms an angle D and E neither substantially parallel nor ubstantially perpendicular to any of the sides 124, 126, 128, and 130 the air duct 14. As shown in Figure 8, the longitudinal axis 122 of the UV lamp 60 of the first device 150 is inclined approximately 37 degrees with respect to a horizontal centerline drawn through the air duct 14. Additionally; the longitudinal axis 122 of an UV lamp 60 of the second device 152 is declined approximately 37 degrees with respect to a horizontal centerline drawn through the air duct l4. However; other angles are contemplated and will be recognized by one of ordinary skill in the art to be consistent with fhe invention as described herein:
Specifically; the angles D and E should comport to the configuration of the duct. l4 into which the UV devices 150 and 152 are being mounted. For example, as shown in Figure8, the two UV devices 150 and 152 may be mounted such that the cross-sectional triangular areas '134 and 136 of the duct 14 that would not be flooded with UV light by the UV lamp 60 of the first device 150 are flooded with UV light by the UV lamp 60 of the second device 152. The UV devices 150 and 152 may otherwise be configured as necessary to increase the area of coverage of UV light within the duct 14:
[0045] The preferred size of the UV lamp 60 is determined by the size of the air duct 14 within which a the UV lamp 60 into be used. It is preferable to install the longest UV
lamp 60 that will fit within the air duct 14 to maximize the intensity of the UV light within the duct 14. Once the appropriate size of the UV lamp 60. is determined, then the preferred number of UV devices 10 can be determined. For example; when employing a twelve inch UV lamp 60, it is preferable to use at least one UV device 10 for buildings approximately 1000 squarefeet in size, at least two UV devices 10 for buildings approximately 1500 square feet in size, at least three UV devices 10 for buildings approximately 2500 square feet in size, ~p54557-353053) TDO-RED #8246513 v:1 -15- Using two twenty-three inch UV lamps 60 mounted at approximately thirty-seven degrees within an eighteen inch square duct l4 results in approximately at least 99%
coverage. ' Finally, using two twenty-eight inch UV lamps 60 mounted at approximately thirty-seven degrees within a twenty-four inch square duct l4 results in approximately at least 99%
coverage.
[0048] In addition to increasing the cross-sectional area of the air duct 14 flooded with UV light, the configuration of devices 150 and 152 illustrated in Figures 8 and 9 increases the volume of the air duct l4 flooded with UV light. As discussed above, the intensity of UV light at any point decreases as the radial distance between the point and an -UV lamp 60 increases. Accordingly; increasing the distance C between the two devices 150 and 152 increases the volume of the duct 14 that is flooded in UV. light at an intensity capable of controlling the growth of or killing contaminants. Similarly; decreasing the distance C
between the two devices 150 and 152 decreases the volume of the duct 14 than is flooded in UV light,. but increases the intensity of UV light within the volume the UV
light does flood:
Therefore, the distance C can be adjusted at the time of installation to best suit the needs of the particular application.
[0049] Figure 10 illustrates a UV device 154, including two angled mounting brackets 156 and 158, for use in applications where implementing a single device 154 to accomplish the mounting configuration illustrated in Figures 8 and 9 is preferred. In addition to the two angled mounting brackets 156 and 158 shown in Figure 10, the UV device 154 may include;
an electrical power assembly 40, at least one ballast 56, appropriate electrical wiring, including an AC cord 50, two UV lamps 60, two clamping pieces 82, at least one viewing ~osass~-3ssos3~
TDO-RED #i8246513 v.l -17-piece 64; a cover 38, as well as any of other various mounting holes and other parts of the device described above necessary to practice the invention.
[0050] The preferred location for mounting the UV device 10 is in the supply duct (not shown) over the air-conditioning ("A/C") coil. This location is downstream of the air filter (not shown), keeping the lamp'60 clean, and also allows the lamp 60 to inhibit contaminant growth in condensation formed on the A/C coil (not shown).
Alternatively, the UV device 10 may be installed in the return air duct (not shown), preferably downstream of the air filter, or any other location within the HVAC system. If more than one UV device 10 is to be used in an HVAC system, installation in both the supply and return ducts is preferred for its cumulative effect:
[0051] Referring now to Figures 11-14, another example of a UV device 200 is shown. As shown in Figure 11; the device 200 has a mounting bracket 202. 'The mounting bracket 202 has a mounting portion 204 that can be placed flush onto an air duct and secured to the air duct to mount the device in a similar manner as the device 10 described above in Figures 1-10. The mounting portion 204 has a hole 206 therein. Attached to the mounting portion 204 are two small flanges 206, which are located on opposite sides of the mounting portion 204, two large flanges 208, also located on opposite sides of the mounting portion 204, and four extension flanges 210. The extension flanges 210 can be used to secure the bracket 202 to the air duct with fasteners. The small flanges 206 and large flanges 208 are used to guide and secure a cover (not shown) to the mounting bracket 202.
[0052] Two side brackets 220 are provided and each side bracket 220 can be secured to the mounting bracket 202 and/or air duct by fasteners as well. An adjustable UV lamp bracket 222 is also provided. As shown, the lamp bracket 222 has a semi-circular portion 224 (054557-353053) TDO-RED #f8246513 v.l -18-
will likewise condense on the chiller. In any case, HVAC systems are prone to having moisture therein.
[0004] The dark and damp conditions within the ducts of an HVAC system are ' conducive to the rapid growth and reproduction of contaminants such as molds, spores;
bacteria, viruses and mildews which may be harmful to the people for whom the air traveling therethrough is intended. HVAC systems thus become a breeding ground for these contaminants. Inhabitants may suffer adverse physical reactions as a result, especially if they are allergic to any of the contaminants. This problem is exacerbated when the inhabitants themselves introduce, additional contaminants into the HVAC system that may then multiply in the contaminant friendly HVAC environment and spread to other inhabitants located within the structure. Air filters have been introduced into HVAC systems in an attempt to remove contaminants passing therethrough before they reach inhabitants.
However, these filters often become damp themselves and provide conditions which foster growth and reproduction of the contaminants.
[0005] It is known that light of the "C" band of the ultraviolet spectrum, with wavelengths between approximately 220 and 288 manometers, ("UV light") can control .
growth of or kill most contaminants currently known to exist within HVAC
systems. The longer the period of time a unit of air is exposed to UV light, and the greater the density of the UV light that a unit of air is exposed to, the greater the number of contaminants within the unit of light will be killed thereby. Lamps capable of emitting UV light typically comprise a long, hollow cylinder containing one or more gasses therein that will, upon being excited by electric current, emit UV light. These UV lamps primarily radiate UV light in a direction (054557-353053) TDO-RED ~t8246513 v.l -2- SUMMARY OF THE INVENTION
(OOb8] It is one of the principal objectives to provide an air treatment or purification device capable of efficiently controlling or killing contaminants within an HVAC system.
[0009] It is another objective to provide a device including one .or more UV
light emitting lamps to flood UV light over a large volume of air within a standard HVAC air duct.
[0010] It is yet another objective to provide a device including one or more standard UV light emitting lamps to flood UV light over a large cross-sectional area of air within a stamdard HVAC air duct.
[0011] It is still another objective to provide an ultraviolet device that can be mounted within an HVAC air duct that only requires access to one side of the air duct for mounting the device.
[0012] It is a further objective to provide a device that has a removable bracket that allows the UV lamp to be mounted within the HVAC air duct at different angles to optimize ~e light coverage within the duct.
[0013] It is another objective to provide an adjustable mounting bracket assembly for a UV lamp so that the UV lamp can be mounted within a duct at a variety of different angles.
[0014] It is a further objective to provide art adjustable mounting bracket assembly for UV lamps so that longer UV bulbs can be placed into a duct.
[0015] It is a further objective to provide an adjustable mounting bracket assembly to facilitate the mounting of a UV lamp to avoid obstacles, such as a cooling coil, within a duct.
(0016] These and other objectives will become apparent upon examining the drawings and figures together with the accompanying written description thereof.
(054557-353053) TDO-RED #18246513 v.l -4-BRIEF DESCRIPTION OF DRAWINGS
[0017) Figure 1 is a perspective view of the UV device, shown without a cover, and a straight-mounted UV lamp.
[0018] Figure 2 is an exploded perspective view of the UV device shown with a straight mounting piece.
[0019] Figure 3 is a second exploded perspective view of the UV device shown with an angled mounting piece [0020] Figure 4 is a top view of the device, shown without the cover, including the wiring configuration and an angularly-mounted UV lamp.
[0021 ] Figure 5 is a bottom view of the device.
[0022] Figure 6 is a side view of the device with a straight-mounted UV lamp mounted to an air duct as seen looking down the duct with airflow into the page.
[0023] Figure 7 is a side view of the device with an angularly-mounted UV lamp mounted to an air duct as seen looking down the duct with airflow into the page.
[0024] Figure 8 is a side view of two devices with an angularly-mounted L1V
lamps mounted to an air duct as seen looking down the duct with airflow into the page.
[0025] Figure 9 is a top view of two devices with angularly-mounted UV lamps mounted to an air duct as seem with air flow from left to right.
[0026] Figure 10 is a perspective view of another embodiment of the UV device, shown without a cover:
[0027] Figure 11 is an exploded view of an adjustable mounting bracket assembly.
(054557-353053) TDO-RED #8246513 v.l _s-[0028] Figure 12 is a perspective view of he adjustable mounting bracket assembly with the UV lamp in a first position.
[0029] Figure 13 is a perspective view of the adjustable mounting bracket assembly with the UV lamp in a second position.
[0030] Figure 14 is a perspective view of the adjustable mounting bracket assembly with the UV lamp in a third position.
(054557-353053) TDO-RED ~t8246513 v.l _( _ DETAILED DESCRIPTION OF THE DRAWINGS
[0031] Figure l depicts one embodiment of the UV device 10 of the present invention. As shown in Figure l, the UV device 10 has a housing 12 for mounting the device to an air duct 14 (Figures 6; 7, 8, and 9). The housing 12 has an interior surface 16 and an exterior surface 18 (Figure 5). Additionally, the device l O has a bottom portion 20 and a top portion 22 integrally formed with the housing 12. The housing 12 includes four mounting holes 24, 26, 28, and 30 (Figure 4) for mounting the device 1 O to the air duct 14 using bolts, screws, or any other appropriate fasteners. The configuration of the mounting holes 24; 26, 28, and 30 can be adjusted to accommodate other mounting methods and devices.
A left side flange 32 and a right side flange 34 are integrally formed with the housing 12: Each of the side flanges 32 and 34 includes a hole 36 for attaching a cover 38 (Figures 2 and 3) to the device using bolts, screws, or any other appropriate fasteners.
[0032] The housing 12, bottom portion 20, top portion 22, side flanges 32 and 34, and cover 3$ are preferably formed of coated steel, such as a stainless or carbon steel.
Alternately; the housing 12, bottom portion 20, top portion 22, side flanges 32 and 34, and cover38 can be formed of any material that is sufficiently strong to support the UV device 10 when mounted to an air duct l4, inhibits the transmission of UV light, and withstand the temperatures of an HVAC duct. For example, some injection molded plastics with UV
inhibitors maybe able to provide adequate support, preventUV light from escaping the air duct 14, and withstand the temperatures of an HVAC duct 14.
[0033] Now looking at Figure 4, an electrical power assembly 40 is mounted through a hole (not shown) in the bottom portion 20 of the device 10. The power assembly 40 has an outer end 42 and an inner end 44. When the power assembly 40 is properly mounted through (054557-353053]
TDO-RED #8246513x.1 _'~_ into which the UV lamp 60 is being mounted. Other angles can be used to obtain different coverage areas, so long as the angle used allows the device 10 to be mounted to the side of the air duct 14. For example, when utilizing the device l0 incorporating the angled mounting bracken 106 in a rectangular duct (not shown), rather than the square duct 14 illustrated in Figure 7, the angle B cari be altered to orient the longitudinal axis 122 of the UV lamp 60 into a corner of the rectangular duct, or otherwise, as necessary to increase the area of coverage of UV light within the duct 14.
[0042] As described above; because the UV lamp 60 only emits UV light in directions perpendicular to the lamp's 60 surface, the standard UV lamp 60 only emits light in a circular band extending radially outward from the longitudinal axis 122 of the UV lamp 60. Thus, as illustrated in Figure 7, the UV lamp 60 creates a cylinder of UV light around the tubular UV
lamp 60 for the length of the lamp 60. As a result, as shown in Figure 7, two cross-sectional triangular areas 134 and 136 within the duct 14 will not be flooded in UV
light. An upper angular area 134 is defined within the duct 14 by three points 138, 140, and 142. The first point 138 is located at the intersection of the UV lamp 60 and the left side 124 of the duct 14.
The second point 140 is located at the intersection of the left side 124 and upper side 128 of the duct 14. The third point 142 is located at the point along the.upper side 128 of the duct 14 that is intersected by a line, drawn perpendicular to the longitudinal axis 122 of the UV lamp 60; originating from the intersection of the UV lamp 60 and the left side 124 of the duct 14.
A second triangular area 136 is defined within the duct 14 by an additional three points 144, 146, and 148. The first point 144 is located at the point along the lower side 130 of the duct 14 that is intersected by a line, drawn perpendicular to the longitudinal axis 122 of the UV
lamp 60, originating from the first end 86 of the UV lamp 60. The second point 146 is (054557-353053) TDO-RED #f8246513 v:l . -13-located at the point along the right side 126 of the duct 14 that is intersected liy a line; drawn : -perpendicular to the longitudinal axis 122 of the UV lamp 60; originating from the first end 86 of the UV lamp 60. The third point 148 is located at the intersection of the right side 126 and lower side 130 of the duct 14. Accordingly, the effectiveness of the embodiment of the device l0 .shown in Figure 7. is influenced by the size and shape of the air duct 14, the angle B of the UV lamp 60, the distance the UV lamp 60 is mounted from the upper side 128 of the duct 14 as measured along the left side 124 of the duct 14; and the length of the UV lamp 60:
'tee embodiment of the device 10 shown in Figure 6 is most desirable when the length of the standard UV lamp 60 employed allows the UV lamp 60 to be mounted closer to the upper side 128 of the duct 14, to' extend the longitudinal axis 122 of the UV lamp 60 closer to the intersection'of the right side 126 and lower side 130 of the duct 14; and be mounted at an angle B that minimizes the area of triangles 134 and 136.
[0043] Figures 8 and 9 illustrate an embodiment of the present invention using two devices 10, each incorporating the angled mounting bracket 1U6. Figure 8 illustrates the embodiment as seen looking down the length of the duct 14 with airflow into the page.
Figure 9 illustrates ahe embodiment as seen from above the duct, with airflow.
frorri left to ', right. In this embodiment, a first device 150 is mounted a distance C upstream of a second device 152. Distance- C should be at least approximately four inches for optimum effectiveness [0044] As shown in Figure 8, the two devices 150 and 152 are mounted such that the .
longitudinal axis 122 of the UV lamp 60 of the first device 150 crosses the longitudinal axis 122 of the UV lamp 60 of the second device 152 to alleviate the individual shortcomings of each of the UV lamps 60. The two devices 150 and 152 are mounted such that the (054557-353053) TDO-RED ~i8246513v.1 -14-longitudinal axis 122 of each lamp 60 forms an angle D and E neither substantially parallel nor ubstantially perpendicular to any of the sides 124, 126, 128, and 130 the air duct 14. As shown in Figure 8, the longitudinal axis 122 of the UV lamp 60 of the first device 150 is inclined approximately 37 degrees with respect to a horizontal centerline drawn through the air duct 14. Additionally; the longitudinal axis 122 of an UV lamp 60 of the second device 152 is declined approximately 37 degrees with respect to a horizontal centerline drawn through the air duct l4. However; other angles are contemplated and will be recognized by one of ordinary skill in the art to be consistent with fhe invention as described herein:
Specifically; the angles D and E should comport to the configuration of the duct. l4 into which the UV devices 150 and 152 are being mounted. For example, as shown in Figure8, the two UV devices 150 and 152 may be mounted such that the cross-sectional triangular areas '134 and 136 of the duct 14 that would not be flooded with UV light by the UV lamp 60 of the first device 150 are flooded with UV light by the UV lamp 60 of the second device 152. The UV devices 150 and 152 may otherwise be configured as necessary to increase the area of coverage of UV light within the duct 14:
[0045] The preferred size of the UV lamp 60 is determined by the size of the air duct 14 within which a the UV lamp 60 into be used. It is preferable to install the longest UV
lamp 60 that will fit within the air duct 14 to maximize the intensity of the UV light within the duct 14. Once the appropriate size of the UV lamp 60. is determined, then the preferred number of UV devices 10 can be determined. For example; when employing a twelve inch UV lamp 60, it is preferable to use at least one UV device 10 for buildings approximately 1000 squarefeet in size, at least two UV devices 10 for buildings approximately 1500 square feet in size, at least three UV devices 10 for buildings approximately 2500 square feet in size, ~p54557-353053) TDO-RED #8246513 v:1 -15- Using two twenty-three inch UV lamps 60 mounted at approximately thirty-seven degrees within an eighteen inch square duct l4 results in approximately at least 99%
coverage. ' Finally, using two twenty-eight inch UV lamps 60 mounted at approximately thirty-seven degrees within a twenty-four inch square duct l4 results in approximately at least 99%
coverage.
[0048] In addition to increasing the cross-sectional area of the air duct 14 flooded with UV light, the configuration of devices 150 and 152 illustrated in Figures 8 and 9 increases the volume of the air duct l4 flooded with UV light. As discussed above, the intensity of UV light at any point decreases as the radial distance between the point and an -UV lamp 60 increases. Accordingly; increasing the distance C between the two devices 150 and 152 increases the volume of the duct 14 that is flooded in UV. light at an intensity capable of controlling the growth of or killing contaminants. Similarly; decreasing the distance C
between the two devices 150 and 152 decreases the volume of the duct 14 than is flooded in UV light,. but increases the intensity of UV light within the volume the UV
light does flood:
Therefore, the distance C can be adjusted at the time of installation to best suit the needs of the particular application.
[0049] Figure 10 illustrates a UV device 154, including two angled mounting brackets 156 and 158, for use in applications where implementing a single device 154 to accomplish the mounting configuration illustrated in Figures 8 and 9 is preferred. In addition to the two angled mounting brackets 156 and 158 shown in Figure 10, the UV device 154 may include;
an electrical power assembly 40, at least one ballast 56, appropriate electrical wiring, including an AC cord 50, two UV lamps 60, two clamping pieces 82, at least one viewing ~osass~-3ssos3~
TDO-RED #i8246513 v.l -17-piece 64; a cover 38, as well as any of other various mounting holes and other parts of the device described above necessary to practice the invention.
[0050] The preferred location for mounting the UV device 10 is in the supply duct (not shown) over the air-conditioning ("A/C") coil. This location is downstream of the air filter (not shown), keeping the lamp'60 clean, and also allows the lamp 60 to inhibit contaminant growth in condensation formed on the A/C coil (not shown).
Alternatively, the UV device 10 may be installed in the return air duct (not shown), preferably downstream of the air filter, or any other location within the HVAC system. If more than one UV device 10 is to be used in an HVAC system, installation in both the supply and return ducts is preferred for its cumulative effect:
[0051] Referring now to Figures 11-14, another example of a UV device 200 is shown. As shown in Figure 11; the device 200 has a mounting bracket 202. 'The mounting bracket 202 has a mounting portion 204 that can be placed flush onto an air duct and secured to the air duct to mount the device in a similar manner as the device 10 described above in Figures 1-10. The mounting portion 204 has a hole 206 therein. Attached to the mounting portion 204 are two small flanges 206, which are located on opposite sides of the mounting portion 204, two large flanges 208, also located on opposite sides of the mounting portion 204, and four extension flanges 210. The extension flanges 210 can be used to secure the bracket 202 to the air duct with fasteners. The small flanges 206 and large flanges 208 are used to guide and secure a cover (not shown) to the mounting bracket 202.
[0052] Two side brackets 220 are provided and each side bracket 220 can be secured to the mounting bracket 202 and/or air duct by fasteners as well. An adjustable UV lamp bracket 222 is also provided. As shown, the lamp bracket 222 has a semi-circular portion 224 (054557-353053) TDO-RED #f8246513 v.l -18-
Claims (12)
1. A device for mounting a UV bulb comprising:
a housing, said housing having whole therein;
a mounting bracket assembly, said mounting bracket comprising a side bracket and an adjustable bracket;
said side bracket being connected to said housing and said adjustable bracket being rotatably mounted to said side bracket;
said adjustable bracket having means for mounting a UV bulb such that when said UV
bulb is mounted to said adjustable bracket, said bulb can be inserted through said hole in said housing.
a housing, said housing having whole therein;
a mounting bracket assembly, said mounting bracket comprising a side bracket and an adjustable bracket;
said side bracket being connected to said housing and said adjustable bracket being rotatably mounted to said side bracket;
said adjustable bracket having means for mounting a UV bulb such that when said UV
bulb is mounted to said adjustable bracket, said bulb can be inserted through said hole in said housing.
2. The device of claim 1 wherein said means for mounting the UV bulb includes a clamp to clamp the UV bulb to said adjustable bracket.
3. The device of claim 1 wherein said device has means for securing the adjustable bracket to said side bracket.
4. The device of claim 3 wherein said means for securing said adjustable bracket includes a hole in said adjustable bracket, a guide slot in said side bracket and a fastener which can be inserted through said guide slot and said hole in said adjustable bracket to secure the adjustable bracket.
5. The device of claim 1 wherein said adjustable bracket substantially covers said hole in said housing.
6. The device of claim 1 wherein said adjustable bracket has a substantially semi-circular portion which substantially covers said hole in said housing.
7. The device of claim 1 wherein said UV bulb can be rotated through an angle of approximately 90 degrees.
8. A device for mounting a UV bulb comprising:
a housing;
a side bracket mounted to said housing;
and an adjustable bracket having means for mounting a UV bulb;
said side bracket being connected to said housing and said adjustable bracket being rotatably mounted to said side bracket such that said UV bulb can be rotated through an arc of about 90 degrees.
a housing;
a side bracket mounted to said housing;
and an adjustable bracket having means for mounting a UV bulb;
said side bracket being connected to said housing and said adjustable bracket being rotatably mounted to said side bracket such that said UV bulb can be rotated through an arc of about 90 degrees.
9. The device of claim 8 wherein said housing has a hole therein through which the UV bulb can be extended.
10. The device of claim 9 wherein said adjustable bracket substantially covers said hole in said housing.
11. The device of claim 8 further comprising securing means for securing said adjustable bracket to said fixed bracket thereby preventing rotation of the adjustable bracket.
12. The device of claim 11 wherein said securing means includes a threaded pin, a groove in said fixed bracket for receiving said pin, a hole in said adjustable bracket also for receiving said pin and a nut for threading onto said pin to secure said adjustable bracket to said fixed bracket.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/679,885 US7064342B2 (en) | 2001-01-23 | 2003-10-06 | Adjustable ultraviolet lamp mounting device |
| US10/679,885 | 2003-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2483950A1 true CA2483950A1 (en) | 2005-04-06 |
Family
ID=34422159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2483950 Abandoned CA2483950A1 (en) | 2003-10-06 | 2004-10-06 | Adjustable ultraviolet lamp mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2483950A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012173A1 (en) * | 2005-07-29 | 2007-02-01 | Streetlight Intelligence, Inc. | Adjustable lamp socket and mounting assembly |
-
2004
- 2004-10-06 CA CA 2483950 patent/CA2483950A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012173A1 (en) * | 2005-07-29 | 2007-02-01 | Streetlight Intelligence, Inc. | Adjustable lamp socket and mounting assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20081006 |