US20120276836A1 - Blower Assembly - Google Patents
Blower Assembly Download PDFInfo
- Publication number
- US20120276836A1 US20120276836A1 US13/098,265 US201113098265A US2012276836A1 US 20120276836 A1 US20120276836 A1 US 20120276836A1 US 201113098265 A US201113098265 A US 201113098265A US 2012276836 A1 US2012276836 A1 US 2012276836A1
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- US
- United States
- Prior art keywords
- blower
- cabinet
- assembly
- blower assembly
- deck
- 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.)
- Abandoned
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Classifications
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- 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
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
- F24F1/0325—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
-
- 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
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
An air handling unit has a blower assembly, a first interior zone, and a second interior zone and the blower assembly physically separates the first interior zone from the second interior zone. A method includes providing a cabinet configured to receive a blower assembly, inserting a blower assembly into the air duct, and closing a cabinet door of the cabinet, wherein upon closing the cabinet door, the primary air flow path from a location within the cabinet downstream of the blower assembly to a location within the cabinet upstream of the blower assembly is through a blower housing of the blower assembly. A blower assembly has a blower housing comprising at least one air inlet and at least one air outlet and a blower deck extending from the outlet, wherein the blower deck comprises at least one substantially flat component having a substantially orthogonal wall extending from the flat component.
Description
- Not applicable.
- Not applicable.
- Not applicable.
- Heating, ventilation, and air conditioning systems (HVAC systems) sometimes comprise air handling units comprising blower assemblies that attach to zone separation decks of the air handling units.
- In some embodiments, an air handling unit is provided that comprises a blower assembly, a first interior zone, and a second interior zone, wherein the blower assembly physically separates the first interior zone from the second interior zone.
- In other embodiments, a method of creating air pressure zones in an air handling unit is provided that comprises providing a cabinet configured to receive a blower assembly, inserting a blower assembly into the air duct, and closing a cabinet door of the cabinet, wherein upon closing the cabinet door, the primary air flow path from a location within the cabinet downstream of the blower assembly to a location within the cabinet upstream of the blower assembly is through a blower housing of the blower assembly.
- In yet other embodiments, a blower assembly for an air handling unit of an HVAC system is provided and the blower assembly comprises a blower housing comprising at least one air inlet and at least one air outlet and a blower deck extending from the outlet, wherein the blower deck comprises at least one substantially flat component having a substantially orthogonal wall extending from the flat component.
- 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.
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FIG. 1 is an oblique view of an air handling unit according to embodiments of the disclosure; -
FIG. 2 is an orthogonal view of the front of the air handling unit ofFIG. 1 ; -
FIG. 3 is a partially exploded oblique view of the air handling unit ofFIG. 1 ; -
FIG. 4 is a simplified oblique view of the air handling unit ofFIG. 1 showing a plurality of inner shell components encased within outer skins; -
FIG. 5 is an oblique left side view of the heat exchanger cabinet right shell ofFIG. 1 ; -
FIG. 6 is an oblique left side view of the blower cabinet right shell ofFIG. 1 ; -
FIG. 7 is an oblique view of a blower assembly ofFIG. 2 from a front-upper-right viewpoint; -
FIG. 8 is an orthogonal front view of the blower assembly ofFIG. 2 ; -
FIG. 9 is an orthogonal rear view of the blower assembly ofFIG. 2 ; -
FIG. 10 is an orthogonal top view of the blower assembly ofFIG. 2 ; -
FIG. 11 is an orthogonal bottom view of the blower assembly ofFIG. 2 ; -
FIG. 12 is an orthogonal right side view of the blower assembly ofFIG. 2 ; -
FIG. 13 is a partial cross-sectional orthogonal right side view of the blower assembly ofFIG. 2 ; -
FIG. 14 is an oblique partial view of the blower assembly ofFIG. 2 from a rear-upper-right viewpoint; and -
FIG. 15 is an oblique partial exploded view of the blower assembly ofFIG. 2 from a rear-lower-right viewpoint. - Interior walls of some air handling units may be planar in construction, covered with insulation that may release particulate matter, and may be configured to carry a plurality of brackets for carrying removable components of the air handling units. The removable components of such air handling units may need to be rearranged to configure the air handling unit for use in a particular installation configuration with respect to the direction of gravity. For example, a removable drain pan may need to be relocated within the air handling unit for use in a particular installation configuration. Still further, construction of the air handling units may be time consuming and/or difficult due to a need to install a variety of brackets and/or support structures to the interior walls of the air handling units. Further, removal and/or replacement of the removable components of some current air handling units may be unnecessarily difficult due to complicated multi-piece mounting brackets and supports.
- Accordingly, the present disclosure provides, among other features, an air handling unit (AHU) that comprises interior cabinet walls shaped and/or otherwise configured to selectively carry removable components of the AHU with a reduced need for brackets and supports. The interior cabinet walls of the AHU of the present disclosure may be further shaped and/or otherwise configured to reduce or eliminate the need to rearrange components within the AHU to configure the AHU for a selected installation orientation relative to the direction of gravity. In some embodiments, an AHU of the disclosure may comprise interior cabinet walls that are formed and/or shaped to integrally comprise brackets and/or other mounting features for carrying removable components. In some embodiments, an AHU may comprise integral drain pans, the integral drain pans being suitable for use in different installation orientations with respect to the direction of gravity.
- AHUs of some HVAC systems comprise blower assemblies that attach to zone separation decks installed in the blower cabinet portion of the AHUs. In some cases, the zone separation decks are structurally inadequate to prevent significant amounts of vibration, stress cracks, and/or other mechanical failures due to the deck carrying heavy blower assemblies. In some cases, the zone separation decks may be formed as a substantially planar component having a hole shaped and/or sized to accommodate connection to an output of the blower assembly. In some cases, the hole in the planar component is located well within the entrance to the blower assemblies so that installation and removal of a blower assembly requires reaching far into the blower cabinet while simultaneously attempting to align features of the blower assembly with complementary features of the deck.
- Accordingly, the present disclosure, in some embodiments, provides systems and methods for providing and/or installing blower assemblies without the need to carefully manage the position of a heavy blower assembly while installing it into an AHU. In some embodiments, the present disclosure provides a blower assembly comprising an integral blower deck. In some embodiments, the integral blower deck may easily be received into an AHU by sliding edges of the integral blower deck into mounting channels of the AHU. In some embodiments, the mounting channels of the AHU may be located along the interior walls of the AHU. In some embodiments, the mounting channels may be integral with the interior walls of the AHU.
- Referring now to
FIGS. 1-3 , anAHU 100 according to the disclosure is shown. In this embodiment, AHU 100 comprises alower blower cabinet 102 attached to an upperheat exchanger cabinet 104. Most generally and for purposes of this discussion, AHU 100 may be described as comprising atop side 106, abottom side 108, afront side 110, aback side 112, aleft side 114, and aright side 116. Such directional descriptions are meant to assist the reader in understanding the physical orientation of the various components parts of theAHU 100 but that such directional descriptions shall not be interpreted as limitations to the possible installation orientations of anAHU 100. Further, the above-listed directional descriptions may be shown and/or labeled in the figures by attachment to various component parts of theAHU 100. Attachment of directional descriptions at different locations or two different components ofAHU 100 shall not be interpreted as indicating absolute locations of directional limits of theAHU 100, but rather, that a plurality of shown and/or labeled directional descriptions in a single Figure shall provide general directional orientation to the reader so that directionality may be easily followed amongst various Figures. Still further, the component parts and/or assemblies of the AHU 100 may be described below as generally having top, bottom, front, back, left, and right sides which should be understood as being consistent in orientation with thetop side 106,bottom side 108,front side 110,back side 112,left side 114, andright side 116 of the AHU 100. -
Blower cabinet 102 comprises a four-walled fluid duct that accepts fluid (air) in through an open bottom side of theblower cabinet 102 and allows exit of fluid through an open top side of theblower cabinet 102. In this embodiment, the exterior of theblower cabinet 102 comprises a blower cabinetouter skin 118 and ablower cabinet panel 120. Theblower cabinet panel 120 is removable from the remainder of theblower cabinet 102 thereby allowing access to an interior of theblower cabinet 102. Similarly,heat exchanger cabinet 104 comprises a four-walled fluid duct that accepts fluid (air) from theblower cabinet 102 and passes the fluid from an open bottom side of theheat exchanger cabinet 104 and allows exit of the fluid through an open top side of theheat exchanger cabinet 104. In this embodiment, the exterior of theheat exchanger cabinet 104 comprises a heat exchanger cabinetouter skin 122 and a heatexchanger cabinet panel 124. The heatexchanger cabinet panel 124 is removable from the remainder of theheat exchanger cabinet 104 thereby allowing access to an interior of theheat 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 theheat exchanger cabinet 104. The AHU 100 further comprises arefrigeration coil assembly 128 that may also be removably carried within theheat exchanger cabinet 104. In this embodiment, theheater assembly 126 is configured to be optionally carried withinheat exchanger cabinet 104 nearer thetop side 106 of theAHU 100 than therefrigeration coil assembly 128. Similarly, theAHU 100 comprises ablower assembly 130 that may be removably carried within theblower cabinet 102. TheAHU 100 may be considered fully assembled when theblower assembly 130 is carried within theblower cabinet 102, each of therefrigeration coil assembly 128 and theheater assembly 126 are carried within theheat exchanger cabinet 104, and when theblower cabinet panel 120 and heatexchanger cabinet panel 124 are suitably associated with the blower cabinetouter skin 118 and the heat exchanger cabinetouter skin 122, respectively. When theAHU 100 is fully assembled, fluid (air) may generally follow a path through theAHU 100 along which the fluid enters through thebottom side 108 of theAHU 100, successively encounters theblower assembly 130, therefrigeration coil assembly 128, and theheater assembly 126, and thereafter exits theAHU 100 through thetop side 106 of theAHU 100. - In this embodiment, each of the four walls of the
blower cabinet 102 and theheat exchanger cabinet 104 are configured to have a double-wall construction. More specifically, theheat exchanger cabinet 104 further comprises a heat exchanger cabinetright shell 132 and a heat exchanger cabinet leftshell 134. In this embodiment, the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134 may be joined to generally form the interior of theheat exchanger cabinet 104. In order to form the above-mentioned double-wall construction for theheat exchanger cabinet 104, the heat exchanger cabinetouter skin 122 generally covers the right side and back side of the heat exchanger cabinetright shell 132 while also generally covering the left side and back side of the heat exchanger cabinet leftshell 134. Most generally, the heat exchanger cabinetright shell 132, the heat exchanger cabinet leftshell 134, and the heat exchanger cabinetouter skin 122 are shaped so that upon their assembly together a heat exchanger cabinet wall space exists between the heat exchanger cabinetouter skin 122 and each of the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134. The blower cabinetright shell 136, the blower cabinet leftshell 138, and the blower cabinetouter skin 118 are also shaped so that upon their assembly together a blower cabinet wall space exists between the blower cabinetouter skin 118 and each of the blower cabinetright shell 136 and the blower cabinet leftshell 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 an insulating material. More specifically, in some embodiments, a polyurethane foam may at least partially fill exchanger cabinet wall space and the lower cabinet wall space. 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 theAHU 100 between the interior of theAHU 100 and the exterior of theAHU 100, may decrease air leakage from theAHU 100, and may reduce and/or eliminate the introduction of volatile organic compounds (VOCs) into breathing air attributable to theAHU 100. Such a reduction in VOC emission by theAHU 100 may be attributable to the lack of and/or reduced use of traditional fiberglass insulation within theAHU 100 made possible by the insulative properties provided by the polyurethane foam within the spaces. - In some embodiments, each of the blower cabinet
outer skin 118 and the heat exchanger cabinetouter skin 122 may be constructed of metal and/or plastic. Each of the heat exchanger cabinetright shell 132, the heat exchanger cabinet leftshell 134, blower cabinetright shell 136, and blower cabinet leftshell 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. Further, the polyurethane foam used to fill the spaces 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 theAHU 100. - Further, each of the heat exchanger cabinet
right shell 132 and the heat exchanger cabinet leftshell 134 comprise aninterior side surface 146, an interiorrear surface 148, an exterior side surface, and an exterior rear surface. Similarly, each of the blower cabinetright shell 136 and the blower cabinet leftshell 138 comprise aninterior side surface 154, an interiorrear 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 (seeFIG. 2 ) that is generally parallel to both the AHU leftside 114 and the AHUright side 116 and which is substantially equidistant from both the AHU leftside 114 and the AHUright side 116. - Referring now to
FIGS. 4 and 5 , simplified views of theAHU 100 are provided. Each of the heat exchanger cabinetright shell 132, the heat exchanger cabinet leftshell 134, the blower cabinetright shell 136, and the blower cabinet leftshell 138 comprise integral features for carrying removable components of theAHU 100. More specifically, the interior side surfaces 146 and interiorrear surfaces 148 of the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134 comprise heaterassembly mounting channels 200 bound above and below by heater assembly rails 202. The heater assembly rails 202 protrude inwardly from the remainder of the respective interior side surfaces 146 and interiorrear surfaces 148 so that complementary shaped structures of theheater assembly 126 may be received within thechannels 200 and retained within thechannels 200 by the heater assembly rails 202. In this embodiment, theheater assembly 126 may be selectively inserted into theheat exchanger cabinet 104 by aligning theheater assembly 126 properly with the heaterassembly mounting channels 200 and sliding theheater assembly 126 toward the AHU backside 112. Of course, theheater assembly 126 may be selectively removed from theheat exchanger cabinet 104 by sliding theheater assembly 126 away from the AHU backside 112. Further, one or more of the interior side surfaces 146 may comprise aheater assembly shelf 204 to slidingly receive a portion of theheater assembly 126 during insertion of theheater assembly 126 until theheater assembly 126 abuts a shelfback wall 206. - Still referring to
FIGS. 4 and 5 , the interior side surfaces 146 of the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134 comprise refrigeration coilassembly mounting channels 208 bound above and below by refrigeration coil assembly rails 210. The refrigeration coil assembly rails 210 protrude inwardly from the remainder of the respective interior side surfaces 146 so that complementary shaped structures of therefrigeration coil assembly 128 may be received within thechannels 208 and retained within thechannels 208 by the refrigeration coil assembly rails 210. In this embodiment, therefrigeration coil assembly 128 may be selectively inserted into theheat exchanger cabinet 104 by aligning therefrigeration coil assembly 128 properly with the refrigeration coilassembly mounting channels 208 and sliding therefrigeration coil assembly 128 toward the AHU backside 112. Of course, therefrigeration coil assembly 128 may be selectively removed from theheat exchanger cabinet 104 by sliding therefrigeration coil assembly 128 away from the AHU backside 112. - It will further be appreciated that one or more of the heat exchanger cabinet
right shell 132 and the heat exchanger cabinet leftshell 134 may comprise integrally formedelectrical conduit apertures 212 which form openings between the interior of theheat exchanger cabinet 104 and the heat exchanger cabinet wall space. Theelectrical 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 theelectrical conduit apertures 212 so that the electrical lines and/or electrical conduit may be more tightly held, isolated from the general cylindrical surface of theelectrical conduit apertures 212, and/or to reduce friction of insertion of electrical lines and/or electrical conduit while retaining a tight fit between thestabilizer pads 214 and the electrical lines and/or electrical conduit. Further, thestabilizer pads 214 may be configured to interact with nuts of electrical conduit connectors so that thestabilizer pads 214 serve to restrict rotational movement of such nuts. By restricting such rotational movement of nuts, thestabilizer pads 214 may provide easier assembly and/or disassembly of the electrical conduit and related connectors to theheat exchanger cabinet 104. Theelectrical 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 leftshell 134 may comprisedrain pan indentions 216. More specifically, the heat exchanger interior side surfaces 146 may generally comprise a slopedportion 218 sloped from a bottom side to thedrain pan indentions 216 so that the bottom of the interior side surfaces 146 protrude further inward and the remainder of the slopedportion 218. Thedrain pan indentions 216 may form a concavity open toward the interior of theheat exchanger cabinet 104. The interior side surfaces 146 further comprises afront boundary wall 220 withintegral drain tubes 222 extending into the concavity formed by thedrain pan indentions 216. In some embodiments, theAHU 100 may be installed and/or operated in an installation orientation where thedrain pan indention 216 of aninterior side surface 146 is located below therefrigeration coil assembly 128 and so that fluids may, with the assistance of gravity, aggregate within the concavity of thedrain pan indention 216 and thereafter exit theAHU 100 through theintegral drain tubes 222. More specifically, the slopedportion 218 may direct fluids falling from therefrigeration coil assembly 128 toward the concavity formed by adrain pan indention 216. In this manner, the integrally formedslope portion 218, thedrain pan indentions 216, and thefront boundary wall 220 may serve as a condensation drain pan for theAHU 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 theAHU 100. Further, when in use, adrain pan indention 216 and slopedportion 218 may cooperate with airflow generated byblower assembly 130 to direct condensation to theintegral 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 leftshell 134 may comprise integral assembly recesses 224. Assembly recesses 224 may be located near a lower end of the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134. Assembly recesses 224 may accept mounting hardware therein for joining theheat exchanger cabinet 104 to theblower cabinet 102. In this embodiment, therecesses 224 are substantially shaped as box shaped recesses, however, in alternative embodiments, therecesses 224 may be shaped any other suitable manner. Additionally, one or more of the heat exchanger cabinetright shell 132 and the heat exchanger cabinet leftshell 134 may comprise integralfastener 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 cabinetright shell 132 and the heat exchanger cabinet leftshell 134 may comprisesupport bar slots 228 configured to receive the opposing ends of a selectively removable structural crossbar. - Referring now to
FIGS. 4 and 6 , one or more of the blower cabinetright shell 136 and the blower cabinet leftshell 138 may comprise blowerassembly mounting channels 230 bound above and below by blower assembly rails 232. The blower assembly rails 232 protrude inwardly from the remainder of the respective interior side surfaces 154 so that complementary shaped structures of theblower assembly 130 may be received within thechannels 230 and retained within thechannels 230 by the blower assembly rails 232. In this embodiment, theblower assembly 130 may be selectively inserted into theblower cabinet 102 by aligning theblower assembly 130 properly with the blowerassembly mounting channels 230 and sliding theblower assembly 130 toward the AHU backside 112. Of course, theblower assembly 130 may be selectively removed from theblower cabinet 102 by sliding theblower assembly 130 away from the AHU backside 112. - It will further be appreciated that one or more of the blower cabinet
right shell 136 and the blower cabinet leftshell 138 may comprisefilter 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 thechannels 234 and retained within thechannels 234 by the filter rails 236. In this embodiment, a filter may be selectively inserted into theblower cabinet 102 by aligning the filter properly with thefilter mounting channels 234 and sliding the filter toward the AHU backside 112. Of course, the filter may be selectively removed from theblower cabinet 102 by sliding the filter away from the AHU backside 112. In some embodiments, thefilter mounting channel 234 may be sloped downward from the front to the back of theAHU 100. Further, in some embodiments, one or more of the filter rails 236 may comprisefilter protrusions 238 which may serve to more tightly hold a filter inserted into thefilter mounting channels 234. In some embodiments, one or more of the blower cabinetright shell 136 and the blower cabinet leftshell 138 may comprisefastener retainer protrusions 226. Still further, one or more of the blower cabinetright shell 136 and the blower cabinet leftshell 138 may comprise integral assembly recesses 240. Assembly recesses 240 may be located near an upper end of the blower cabinetright shell 136 and the blower cabinet leftshell 138. Assembly recesses 240 may accept mounting hardware therein for joining theblower cabinet 102 to theheat exchanger cabinet 104. In this embodiment, therecesses 240 are substantially shaped as box shaped recesses, however, in alternative embodiments, therecesses 240 may be shaped in any other suitable manner. - While many of the features of the heat exchanger cabinet
right shell 132, heat exchanger cabinet leftshell 134, blower cabinetright shell 136, and blower cabinet leftshell 138 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
FIGS. 7-13 , theblower assembly 130 is shown in greater detail.FIG. 7 is an oblique view of theblower assembly 130 from a front-upper-right viewpoint.FIG. 8 is an orthogonal front view of theblower assembly 130.FIG. 9 is an orthogonal rear view of theblower assembly 130.FIG. 10 is an orthogonal top view of theblower assembly 130.FIG. 11 is an orthogonal bottom view of theblower assembly 130.FIG. 12 is an orthogonal right side view of theblower assembly 130.FIG. 13 is a partial cross-sectional orthogonal right side view of theblower assembly 130.FIG. 14 is an oblique partial view of theblower assembly 130 from a rear-upper-right viewpoint.FIG. 15 is an oblique partial exploded view of theblower assembly 130 from a rear-lower-right viewpoint. - The
blower assembly 130 comprises amotor 300 having a shaft upon which animpeller 304 is mounted. Themotor 300 is attached to amotor mount 306 that holds themotor 300 in place relative to aleft shell 308 of theblower assembly 130 and aright shell 310 of theblower assembly 130. In this embodiment,left shell 308 and theright shell 310 are selectively joined together via integral snap features as well as retaining clips 312. The snap features and theclips 312 may be operated to optionally disconnect theleft shell 308 from theright shell 310. When joined,left shell 308 and theright shell 310 may be conceptualized as defining two distinct functional portions of the blower assembled 130. - One functional portion of the
blower assembly 130 may be referred to as theblower housing 314. A primary function of theblower housing 314 is to receive at least a portion of each of themotor 300 and theimpeller 304 while also defining an intermediate air path between each of the leftair input port 316 of theblower assembly 130 and the rightair input port 318 of theblower assembly 130 and theblower output 320. It is the shape of the interior of theblower housing 314 in combination with the movement of theimpeller 304 that allows the optional intake of air through the rightair input port 318 and the leftair input port 316 and subsequent output of that air through theblower output 320. Another functional portion of theblower assembly 130 may be referred to as theblower deck 322. A first primary function of theblower deck 322 is to serve as a physical component used in mounting theentire blower assembly 130 within and relative to theblower cabinet 102. A second primary function of theblower deck 322 is to serve as a substantial air pressure barrier between the portion of the interior of theblower cabinet 102 that houses theblower assembly 130 and the interior of, in this embodiment, theheat exchanger cabinet 104. - Because the
blower housing 314 in theblower deck 322 are substantially integrally formed when theleft shell 308 is joined to theright shell 310, theblower housing 314 in theblower deck 322 may be conceptualized as being joined along aninterface path 324. In this embodiment,interface path 324 comprises the points at which an inner surface of theblower assembly 130 begins to primarily extend at least one of a left, right, front, and/or rear direction. Accordingly, in this embodiment, theinterference path 324 generally denotes a perimeter of theblower output 320. - The
blower deck 322 generally comprises aleft floor 326 and aright floor 328 that extend outward from theblower output 320 in a substantially left, right, front, and/or rear directions so that a generally horizontal boundary is formed. Theleft floor 326 extends generally horizontally outward to meet aleft wall 330 of theblower deck 322, a left portion of afront wall 332 of theblower deck 322, a left portion of arear wall 334 of theblower deck 322, and a left most portion of theright floor 328. Theright floor 328 extends generally horizontally outward to meet aright wall 336 of theblower deck 322, a right portion of thefront wall 332 of theblower deck 322, a right portion of therear wall 334 of theblower deck 322, and a right most portion of theleft floor 326. - In this embodiment, the
left floor 326 is slightly sloped so that a left end of theleft floor 326 is slightly vertically higher than a right end of theleft floor 326. Similarly, in this embodiment, theright floor 328 is slightly sloped so that a right end of theright floor 326 is slightly vertically higher than a left end of theright floor 328. Further, in this embodiment, a top edge of therear wall 334 of theleft shell 308 is slightly sloped so that a right end of the top edge of therear wall 334 of theleft shell 308 is slightly vertically higher than a left end of the top edge of therear wall 334 of theleft shell 308. Similarly, in this embodiment, a top edge of therear wall 334 of theright shell 310 is slightly sloped so that a left end of the top edge of therear wall 334 of theright shell 310 is slightly vertically higher than a right end of the top edge of therear wall 334 of theright shell 310. Still further, in this embodiment, a right end of therear wall 334 of theleft shell 308 is located slightly further rearward than a left end of therear wall 334 of theleft shell 308. Similarly, in this embodiment, a left end of therear wall 334 of theright shell 310 is located slightly further rearward in a right and of therear wall 334 of theright shell 310. - In this embodiment,
structural webs 338 are provided to increase the rigidity and/or strength of theblower assembly 130. Somestructural webs 338 join theleft wall 330 to theleft floor 326 while otherstructural webs 338 join theright wall 336 to theright floor 328. In this embodiment, somestructural webs 338 join theleft floor 326 to a left portion of theblower housing 314 while otherstructural webs 338 join theright floor 328 to a right portion of theblower housing 314. - Referring now additionally to
FIGS. 13 and 14 , adrip shield 340 and a mountingplate 342 are shown in greater detail.FIG. 13 is an oblique partial view of theblower assembly 130 from an upper-rear-right in viewpoint.FIG. 14 is an oblique partial exploded view of theblower assembly 130 from a rear-right viewpoint.FIG. 13 generally shows each of thedrip shield 340 and the mountingplate 342 in their installed positions relative to theblower deck 322.FIG. 14 generally shows thedrip shield 340 and the mountingplate 342 together in isolation from the remainder of theblower assembly 130 and in exploded positions relative to each other so that there is a vertical offset distance between the two. - The
drip shield 340 comprises a generally horizontal cover comprising abent plate 344 having acentral ridge 346 extending in a forward-rearward direction and fromsuch ridge 346 thebent plate 344 extends both in the left direction in the right direction. As thebent plate 344 extends from theridge 346 in the left direction, thebent plate 344 extends slightly downward from the vertical height of theridge 346. Similarly, as thebent plate 344 extends from theridge 346 in the right direction, thebent plate 344 extends slightly downward from the vertical height of theridge 346. In this embodiment, it will be appreciated that the underside of thebent plate 344 is dimensioned to complement and accordingly to optionally mate with the upper end of thefront wall 332 of theblower deck 322. As shown, a rear left corner of thebent plate 344 and a rear right corner of thebent plate 344 are each locally bent vertically downward. Accordingly, when installed and/or attached to theblower deck 322, water and/or condensation that contacts thebent plate 344 from above may tend to drain downward and away from any electrical components carried by the mountingplate 342. In some embodiments, water and/or condensation may be routed by thebent plate 344 towardleft floor 326 and theright floor 328 rather than pooling above any electrical components carried by the mountingplate 342. - In this embodiment, the
bent plate 344 further comprises aleft tab 348, aright tab 350, andfront tabs 352. Theleft tab 348 extends generally downward from the left side of thebent plate 344. Theright tab 350 extends generally downward from the right side of thebent plate 344. Thefront tabs 352 extend generally upward from the front side of thebent plate 344. - This embodiment, the mounting
plate 342 comprises a generallyvertical component wall 354 configured for mounting against thefront wall 332 of theblower deck 322. Mountingplate 342 further comprises forward tabs that extend generally forward from an upper end of thecomponent wall 354. The upper end of the mountingplate 342 and theforward tabs 356 are configured to complement the underside of thebent plate 344 and to mate against the underside of thebent plate 344. - Referring now to
FIG. 2 , it can be seen that when theblower assembly 130 is installed into theblower cabinet 102, theblower deck 322 generally provides azone boundary 358 between a firstinterior zone 360 of theAHU 100 and a secondinterior zone 362 of theAHU 100. The firstinterior zone 360 is generally associated with the left and rightair input ports blower assembly 130 while the secondinterior zone 362 is generally associated with a space adjacent theblower output 320 and which, in this embodiment, is generally associated with thecoil assembly 128. More specifically, in this embodiment, the left andright floors blower deck 322 generally divide the interior of theAHU 100 into the first and secondinterior zones motor 300 to rotate theimpeller 304 may cause a pressure differential between thezones - In this embodiment, the
blower deck 322 does not provide theentire zone boundary 358, but rather, thezone boundary 358 is at least partially defined by thedrip shield 340. More specifically, in this embodiment, thezone boundary 358 comprises theleft floor 326, theright floor 328, and thebent plate 344. Of course in other embodiments, theblower deck 322 may be configured to incorporate the functionality of the drip shield into theblower deck 322 itself as a unitary component. Nonetheless, this disclosure provides ablower assembly 130 that comprises components that form anentire zone boundary 358 when theblower assembly 130 is installed into theAHU 100. - More particularly, when the
blower assembly 130 is installed into theAHU 100, the following components may be mated and/or located adjacent each other to produce the zone boundary 358: therear wall 334 and the interiorrear surface 156 and/or mountingchannels 230, theright wall 336 and the right interior side surfaces 154 and/or mountingchannels 230, theleft wall 330 and the left interior side surfaces 154 and/or mountingchannels 230, the upper end of thefront wall 332 and the underside of thebent plate 344 of thedrip shield 340, thefront tabs 352 of thedrip shield 340 and the back side of theblower cabinet panel 120, theleft tab 348 of thedrip shield 340 and the leftinterior side surface 154 and/or mountingchannels 230, and theright tab 350 of thedrip shield 340 and the rightinterior side surface 154 and/or mountingchannels 230. - In some embodiments, a center of mass and/or a center of gravity of the
blower assembly 130 is located within a periphery the components that form thezone boundary 358, as viewed from above. In some cases, by locating the center of mass and/or center of gravity in the above described manner may allow better distribution of forces due to gravity along a greater footprint so that gravitational forces do not consistently produce large bending moments against a blower deck that is not integral to a blower assembly. - 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, RI, 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=RI+k*(Ru−RI), 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 (20)
1. An air handling unit, comprising:
a blower assembly;
a first interior zone; and
a second interior zone;
wherein the blower assembly physically separates the first interior zone from the second interior zone.
2. The air handling unit of claim 1 , wherein the first interior zone is associated with an input to a blower housing of the blower assembly.
3. The air handling unit of claim 2 , wherein the second interior zone is associated with a blower output of the blower housing.
4. The air handling unit of claim 3 , wherein a pressure differential between the first interior zone and the second interior zone is primarily attributable to a zone boundary between the first interior zone and the second interior zone provided by a blower deck of the blower assembly.
5. The air handling unit of claim 4 , wherein the blower deck is formed integrally with the blower housing and wherein the blower housing houses at least a portion of a motor of the blower assembly and an impeller of the blower assembly.
6. The air handling unit of claim 4 , wherein substantially the entire zone boundary is formed by components of the blower assembly.
7. The air handling unit of claim 6 , wherein at least one of the components forming the zone boundary are sloped to manage a flow of water away from an electrical component of the blower assembly.
8. The air handling unit of claim 1 , wherein the blower deck extends substantially an entire distance from a left interior wall of a blower cabinet of the air handling unit to an opposite right interior wall of the blower cabinet.
9. The air handling unit of claim 8 , wherein the blower deck extends from a blower outlet to a rear interior wall of the air handling unit.
10. The air handling unit of claim 9 , wherein the blower deck extends from the blower outlet to a front panel of the blower cabinet.
11. A method of creating air pressure zones in an air handling unit, comprising:
providing a cabinet configured to receive a blower assembly;
inserting a blower assembly into the air duct; and
closing a cabinet door of the cabinet;
wherein upon closing the cabinet door, the primary air flow path from a location within the cabinet downstream of the blower assembly to a location within the cabinet upstream of the blower assembly is through a blower housing of the blower assembly.
12. The method of claim 11 , further comprising:
blocking air flow around the primary air flow path by spanning a blower deck of the blower assembly between the interior walls of the cabinet.
13. The method of claim 11 , wherein the blower assembly comprises a blower deck extending between at least two opposing interior walls of the cabinet.
14. The method of claim 13 , further comprising:
sliding the blower deck into integral mounting channels of the at least two opposing interior walls of the cabinet.
15. The method of claim 14 , further comprising:
sliding the blower deck into a third mounting channel of the interior walls of the cabinet.
16. A blower assembly for an air handling unit of an HVAC system, the blower assembly comprising:
a blower housing comprising at least one air inlet and at least one air outlet; and
a blower deck extending from the outlet, wherein the blower deck comprises at least one substantially flat component having a substantially orthogonal wall extending from the flat component.
17. The blower assembly of claim 16 , wherein the wall is located along an edge of the flat component.
18. The blower assembly of claim 17 , wherein a structural web extends between the wall and the flat component.
19. The blower assembly of claim 17 , wherein a structural web extends between the flat component and the blower housing.
20. The blower assembly of claim 16 , wherein the blower assembly comprises a first shell mated to a second shell and wherein the first shell comprises a portion of each of the blower housing and the blower deck and wherein the second shell comprises a portion of each of the blower housing and the blower deck.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/098,265 US20120276836A1 (en) | 2011-04-29 | 2011-04-29 | Blower Assembly |
CA2773569A CA2773569C (en) | 2011-04-29 | 2012-04-04 | Blower assembly |
US16/353,376 US11105531B2 (en) | 2011-04-29 | 2019-03-14 | Blower assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US13/098,265 US20120276836A1 (en) | 2011-04-29 | 2011-04-29 | Blower Assembly |
Related Child Applications (1)
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US16/353,376 Continuation US11105531B2 (en) | 2011-04-29 | 2019-03-14 | Blower assembly |
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US20120276836A1 true US20120276836A1 (en) | 2012-11-01 |
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ID=47068242
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US16/353,376 Active 2032-01-18 US11105531B2 (en) | 2011-04-29 | 2019-03-14 | Blower assembly |
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Application Number | Title | Priority Date | Filing Date |
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US16/353,376 Active 2032-01-18 US11105531B2 (en) | 2011-04-29 | 2019-03-14 | Blower assembly |
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US (2) | US20120276836A1 (en) |
CA (1) | CA2773569C (en) |
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US20140213172A1 (en) * | 2013-01-25 | 2014-07-31 | Trane International Inc. | HVAC Duct |
WO2014166715A1 (en) * | 2013-04-09 | 2014-10-16 | A-Heat Allied Heat Exchange Technology Ag | Easy maintenance access system for insulated cooler unit |
JP2015175558A (en) * | 2014-03-17 | 2015-10-05 | 株式会社富士通ゼネラル | duct type air conditioner |
US20150300360A1 (en) * | 2014-04-18 | 2015-10-22 | Daikin Industries, Ltd. | Air conditioning apparatus |
USD751681S1 (en) * | 2014-11-14 | 2016-03-15 | Trane International Inc. | Furnace viewing window |
US9335103B1 (en) * | 2014-10-30 | 2016-05-10 | Mitsubishi Electric Corporation | Air handling unit with internal support system |
WO2016155415A1 (en) * | 2015-03-31 | 2016-10-06 | 深圳市艾特网能有限公司 | Air conditioner |
JPWO2016075817A1 (en) * | 2014-11-14 | 2017-04-27 | 三菱電機株式会社 | Air conditioner indoor unit |
US20170159967A1 (en) * | 2014-09-18 | 2017-06-08 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
US20200363095A1 (en) * | 2019-05-13 | 2020-11-19 | Air Distribution Technologies Ip, Llc | Parallel fan powered terminal unit |
US11105531B2 (en) | 2011-04-29 | 2021-08-31 | Trane International Inc. | Blower assembly |
CN114930088A (en) * | 2020-12-11 | 2022-08-19 | 广东美的白色家电技术创新中心有限公司 | Air conditioner indoor unit and air conditioner |
US11892013B2 (en) | 2020-12-08 | 2024-02-06 | Johnson Controls Tyco IP Holdings LLP | Blower assembly systems and methods |
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CN111023312B (en) * | 2019-12-11 | 2021-07-30 | 青岛海信日立空调系统有限公司 | Air conditioner indoor unit |
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Also Published As
Publication number | Publication date |
---|---|
US20190212031A1 (en) | 2019-07-11 |
CA2773569A1 (en) | 2012-10-29 |
US11105531B2 (en) | 2021-08-31 |
CA2773569C (en) | 2015-12-08 |
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