US20180106487A1 - Managing air flow - Google Patents
Managing air flow Download PDFInfo
- Publication number
- US20180106487A1 US20180106487A1 US15/845,741 US201715845741A US2018106487A1 US 20180106487 A1 US20180106487 A1 US 20180106487A1 US 201715845741 A US201715845741 A US 201715845741A US 2018106487 A1 US2018106487 A1 US 2018106487A1
- Authority
- US
- United States
- Prior art keywords
- air
- enclosure
- opening
- entranceway
- boundary
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/006—Centring or aligning a vehicle at a loading station using means not being part of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/008—Dock- or bumper-seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/22—Heat or fire protection
Definitions
- the present invention relates to entranceways.
- An air curtain is a forced flow of relatively high-velocity air across the opening of a door serving either to restrict the normal air exchange resulting from the temperature differential or to mix and dilute any air which does pass through the air curtain.
- Another approach to controlling air flow is the installation of a physical barrier.
- a strip door that is widely used to restrict the flow of air through an open warehouse door.
- Such a strip door employs transparent vinyl strips which enable personnel and vehicles to push through. The strips quickly fall back into place to act as the air flow barrier when the obstruction has cleared the door.
- a vehicle entranceway to an enclosure comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion.
- the frame is adapted to be in contact with an exterior wall of the enclosure and in surrounding relation to a first opening therein.
- the side wall portions extend outwardly from the exterior wall on opposite sides of an inclined pathway.
- the inclined pathway and said side and top wall portions cooperate to define a second opening distally located to the exterior wall.
- the first opening has a lower boundary and the second opening has an upper boundary.
- the lower boundary is at an elevation higher than that of the upper boundary.
- An exemplary embodiment further comprises a blower to increase air flow across and/or along an air barrier layer within the enclosure.
- the blower may be provided with a heat source for conditioning the air barrier layer.
- a vehicle entranceway further comprising a heat source being associated with a blower for continuously circulating warm air within the vehicle entranceway.
- a heat source being associated with a blower for continuously circulating warm air within the vehicle entranceway.
- the heat source originates from the inside of the enclosure.
- a vehicle entranceway further comprising at least one vent to egress fumes and/or to ingress fresh air.
- the at least one vent being located in the top wall portion.
- a method for managing air flow from a first opening of an enclosure comprising the steps of,
- an entranceway to an enclosure for managing air flow from at least one first opening of an enclosure comprising a frame being adapted to be in contact with an exterior wall of the enclosure and including a pair of laterally-spaced side wall portions, a top wall portion, an inclined pathway, and a second opening distally located to the exterior wall, the inclined pathway together with said side and top wall portions sealably cooperating to define an air mass, the first opening having a lower boundary and the second opening having an upper boundary, the lower boundary being at an elevation higher than that of the upper boundary wherein, when there is a temperature differential within the entranceway warmer air will be trapped in an upper portion of the air mass and above the upper boundary to impede air flow from the enclosure.
- a vehicle entranceway for managing air flow from a first opening of an enclosure comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion, said frame being adapted to be mounted in contact with an exterior wall of the enclosure and in surrounding relation to the first opening, said side wall portions extending outwardly from the exterior wall, said side and top wall portions cooperating to define a second opening projecting from the exterior wall and to create a cavity within the vehicle entranceway, the first opening having a lower boundary and the second opening having an upper boundary wherein the lower boundary is at an elevation higher than that of the upper boundary, wherein when there is a temperature differential within the vehicle entranceway warmer air will be trapped in an upper portion of the cavity and above the upper boundary to impede air flow from the enclosure.
- a vehicle entranceway structure for attachment to an enclosure, comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion, said frame being adapted to be in contact with an exterior wall of the enclosure and in surrounding relation to a first opening therein, said side wall portions extending outwardly from the exterior wall, an inclined pathway and said side and top wall portions cooperating to define a second opening distally located to the exterior wall, the first opening having a lower boundary and the second opening having an upper boundary, the lower boundary being at an elevation higher than that of the upper boundary, the pathway having an upper surface, the side wall portions and top wall portions cooperating with the pathway to form a cavity with an operative boundary region capable of maintaining a mass of air therein at a temperature higher than ambient air external to the enclosure with the mass occupying a volume whose lower boundary lies below the lower boundary of the first opening and above the upper boundary of the second opening, with or without an auxiliary source of heated air being delivered to the cavity.
- the side wall and top wall portions include a first layer for establishing the operative boundary region and a second insulating layer for insulating the operative boundary region.
- the first and second layer including one or more substrates formed of plastic, wood, metal, glass, concrete or a combination thereof.
- the auxiliary heat source includes a duct in communication with the enclosure and/or a heat source within the enclosure to deliver heated air therefrom to the cavity.
- the side wall and top wall portions have an R value ranging from 0.1 to 70.
- the vehicle entrance way structure R value ranges from 1 to 45.
- An exemplary embodiment further comprises an auxiliary source of heated air being delivered to the cavity.
- the auxiliary source of heated air being located at an intermediate region adjacent to the lower boundary.
- the auxiliary source of heat including a fan or blower for delivering a flow of air at an elevation between the upper and lower boundaries.
- the auxiliary heat source including a duct in communication with the enclosure and/or a heat source within the enclosure to deliver heated air therefrom to the cavity.
- FIG. 1 is a side cross sectional view of an entranceway of enclosure
- FIGS. 1 a and 1 b are side cross sectional views of an entranceway with a vehicle
- FIG. 1 c is a side cross sectional view of a portion of the entranceway and a blower
- FIGS. 1 d and 1 e is a top perspective view of the entranceway of the enclosure
- FIG. 2 is a side cross sectional view of the entranceway of the enclosure with a pedestrian
- FIG. 3 is a side cross sectional view of the two entranceways of an enclosure.
- an entranceway 10 to an enclosure 12 having a first opening 14 there is provided an entranceway 10 to an enclosure 12 having a first opening 14 .
- the entranceway has a frame 16 including a pair of laterally-spaced side wall portions 18 and a top wall portion 20 .
- the frame 16 is adapted to be in contact with an exterior wall 22 of the enclosure 12 and in surrounding relation to the first opening 14 .
- the side wall portions 18 extend outwardly from the exterior wall 22 .
- the first opening 14 has a lower boundary 28 and the second opening 26 has an upper boundary 30 .
- the lower boundary 28 is at an elevation higher than that of the upper boundary 30 .
- the warmer air will be trapped, or otherwise contained, in an upper portion 32 of the entranceway 10 and above the upper boundary 30 .
- the pathway 24 may have at least one portion which is inclined, that is by having a distal inclined portion adjacent the second opening 26 and a substantially horizontal (or non-inclined) portion adjacent the first opening 14 .
- the converse may also be used in other cases as desired.
- FIG. 2 illustrates another example which employs two inclined portions joined by an individual horizontal portion.
- the frame 16 may be constructed of steel or other suitable materials.
- the frame 16 may be a retrofit to an existing enclosure and may be sold as a kit (to be discussed later) or may be incorporated in the construction of a new enclosure.
- the side and top wall portions 18 and 20 in this example, may be provided with a level or grade (such as an R value) of insulation that provides adequate insulation.
- a level or grade such as an R value
- the greater the R value of insulation the greater the ability of the enclosure to function in its role as a trap for warm air.
- the greater the control or reduction of heat dissipation the greater the operating efficiency of the entrance way in its function to trap or contain warm air.
- one or more of the side wall and top wall portions may have an R value ranging from 0.1 to 70. In another example, one or more of the side wall and top wall portions may have an R value ranging from 1 to 45.
- a first layer 50 for establishing an operating boundary layer and a second insulating layer 52 may be provided.
- the first and second layers 50 and 52 respectively may each be comprised of wood, glass, concrete or combinations thereof so as to provide protection from the elements and insulation.
- each entranceway has a single opening in the enclosure.
- the enclosure may have several first openings 14 (for example to provide access to neighbouring loading docks).
- the second opening 26 may be of a reduced width relative to the laterally-spaced side wall portions.
- the inclined pathway 24 and the side and top wall portions 18 and 20 cooperate to form a cavity 34 within the entranceway 10 to define an air mass 36 therein.
- the top wall portion 20 may be formed with a flat, domed, A-framed or other configuration, provided that it provides, with the side wall portions, the cavity 34 in a form to effectively receive and contain the air mass 36 .
- an air barrier layer may be created between a relatively warmer air region 40 and a relatively cooler air region 42 .
- the inclined pathway 24 may include a prepared or unprepared ground surface, a layer of concrete and/or other building materials, and may also be formed to provide a level of insulation in order to moderate the relatively cooler air region 42 , thus lowering the temperature differential between the relatively warmer air region 40 and the relatively cooler air region 42 .
- the enclosure in one example may be considered to be working effectively with a relatively warmer air region 40 when being maintained at a temperature ranging from 29.8 to 42.0 degree Celsius when the relatively cooler air region 42 has a temperature ranging from 21.6 to 28.2 degree Celsius, with the exterior ambient air outside the enclosure at a temperature ranging from 16.8 to 17.1 degree Celsius.
- air contains molecules that move or agitate. This movement or agitation becomes greater as the temperature rises and the molecules occupy more space. This causes the mass of the air to expand. Although the total mass of the air has not changed, it occupies a greater volume, so any given cubic area will be lighter.
- the air barrier layer 38 in dead calm conditions, may be generally horizontal. However, the air barrier layer 38 may bend or fluctuate away from the static horizontal position shown.
- the air barrier layer in this case, may only be identifiable by a relatively sharp temperature transition between the warmer and cooler air regions 40 and 42 , such as a temperature transition of 10 to 20 degrees Celsius over the distance of about 6 to about 18 inches, for instance.
- the air barrier layer 38 may not occupy a discrete region but may represent instead a transition zone between the relatively warmer air region 40 and the relatively cooler air region 42 .
- the pathway 24 may be used for vehicular, pedestrian and/or wheelchair use.
- the pathway may be a conveyor or an assembly line, as shown in FIG. 3 .
- the pathway may travel through a heated enclosure having a first entranceway leading into the enclosure and a second entranceway leading out. The heated air mass is trapped within the cavity created by the side and top wall portions of each entranceway.
- the enclosure may be provided with one or more blowers, one of which is shown at 44 to increase air flow across or along the air barrier layer 38 .
- the blower 44 is associated with the enclosure 12 just under the lower boundary 28 of the first opening 14 .
- the blower 44 in this case in a group of blowers
- the blower 44 may be perpendicular to the pathway 24 and thus blowing in a sideways direction rather than lengthwise as is the case with the blower 44 in FIG. 1 c.
- the blower may work in conjunction with, or be replaced by, a heat source for conditioning the air mass.
- FIG. 1 the example of FIG.
- the heat source 46 is provided in the form of a number of heat ducts 46 , and is associated with blower 44 for continuously circulating warm air 40 within the entranceway 10 to enhance the air barrier layer 38 .
- the heat source 46 may be, for example, a natural gas heater, or other fossil fuel or electric heater, and is associated with the entranceway.
- the heat source may be provided in the form of a duct in communication with an interior space of the enclosure or another heat source inside the enclosure for drawing warm air from the enclosure to the warmer air region.
- Another example for providing a heat source 46 for the entranceway 10 may be to heat the pathway 24 or a portion of the pathway 24 , by way of radiant heating circuits, such as by electrical or circulating heating fluid for instance.
- venting unit 48 there may be provided at least one venting unit 48 to remove fumes from inside the cavity 34 and/or to draw in fresh air thereto.
- the venting unit 48 is located in the top wall portion 20 .
- kits or combination of parts for retrofitting an entranceway to an enclosure.
- the kit or combination of parts may include a frame comprising a pair of laterally-spaced side wall portions and a top wall portion.
- the kit may also include fasteners for assembly of the frame and/or attachment of the frame to an exterior wall of the enclosure in a surrounding relation to the first opening.
- the side wall portions are assembled in an outwardly extending fashion from the exterior wall.
- the walls may either cover an existing inclined pathway or a pathway may be constructed so that the upper boundary 30 of the second opening is below the lower boundary 28 of the first opening 14 .
- the kit may further include one or more heat sources, fans and/or vents or the like.
- the entranceway manages air flow by providing a cavity created by a pair of laterally-spaced side wall portions and a top wall portion.
- the side wall portions extend outwardly from the exterior wall and, with the top wall portions, cooperate to define a second opening projecting from the exterior wall.
- the second opening is arranged so that its upper boundary is at a lower elevation than the corresponding lower boundary of the first opening. In the presence of a temperature differential within the entranceway, relatively warmer air is trapped in an upper portion of the cavity and above the upper boundary.
- the relatively warmer air may itself have a temperature differential between the air barrier layer and the inside surface of the wall and roof portions.
- the entranceway is believed to provide maximum benefit when the temperature of the relatively warmer air in the warmer air region 40 is equal to or greater than the air inside the enclosure, as aided, in one example, by the use of blowers or heating ducts. Meanwhile, there may also be beneficial effects when the temperature of the relatively warmer air is below the temperature of the air inside the enclosure.
- the blowers may provide the benefit of reducing the temperature differential by constantly mixing the relatively warmer air while the heat source may thus function to add heated air to overcome air leakage or heat loss as the case may be.
- the speed or interval of operation of the blowers and the heat sources may also be adjusted according to the changing temperatures of the exterior ambient air, wind conditions of the exterior ambient air, and the temperatures of the relatively warmer air region and the relatively cooler air region, that is on either side of the transition zone.
- Another benefit of the entrance way may lie in the fact that the transition zone is above the upper boundary of the second opening and below the lower boundary of the first opening, thereby reducing air flow at both the first and second openings. This may be especially relevant at the second opening if the blowers and/or heat sources are configured to provide only sufficient air movement and heat to maintain a relatively stable and even temperature through out the relatively warmer air region while reducing the growth of the mass of the relatively warmer air region so that it does not migrate downwardly and induce an alternate escape route for the relatively warmer air at the second opening as shown by the dashed arrow E in FIG. 1 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Air-Conditioning For Vehicles (AREA)
- Air-Flow Control Members (AREA)
Abstract
Enclosure assemblies for managing air flow. Such assemblies include an enclosure and at least one inclined pathway in contact with the enclosure, each pathway including a pair of side wall portions and a top wall portion that collectively extend between spaced apart openings to define an air mass. One opening having a lower boundary and the other opening having an upper boundary, with the lower boundary being at an elevation higher than that of the upper boundary, such that when a temperature differential exists within a given pathway, warmer air will be trapped in an upper portion of the air mass and above the upper boundary, thereby impeding air flow from the enclosure.
Description
- This application is a continuation of U.S. application Ser. No. 14/303,985, filed on Jun. 13, 2014, which is a continuation of U.S. application Ser. No. 12/695,061, filed on Jan. 27, 2010. U.S. application Ser. No. 12/695,061 claims the benefit of U.S. Provisional Application No. 61/148,014, filed on Jan. 28, 2009.
- The present invention relates to entranceways.
- Most warehouses, manufacturing facilities and large retail stores include loading docks that provide a location for loading and unloading vehicles. Further, some of these enclosures have various pedestrian entranceways to allow employees and customers to come and go. In northern climates, one area of concern is excessive heat loss in the winter months in loading docks and pedestrian entranceways. One means of addressing this concern is the control of air flow.
- One common approach has been to employ an air curtain across a door. An air curtain is a forced flow of relatively high-velocity air across the opening of a door serving either to restrict the normal air exchange resulting from the temperature differential or to mix and dilute any air which does pass through the air curtain.
- Another approach to controlling air flow is the installation of a physical barrier. One example is a strip door that is widely used to restrict the flow of air through an open warehouse door. Such a strip door employs transparent vinyl strips which enable personnel and vehicles to push through. The strips quickly fall back into place to act as the air flow barrier when the obstruction has cleared the door.
- It would be desirable to provide an enhanced entranceway.
- It should be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted,” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. In addition, the terms “connected” and “coupled” and variations thereof are not restricted to physical or mechanical connections or couplings. Furthermore, and as described in subsequent paragraphs, the specific mechanical, electrical or other configurations illustrated in the drawings are intended to exemplify embodiments of the invention. However, other alternative mechanical, electrical or other configurations are possible which are considered to be within the teachings of the instant disclosure. Furthermore, unless otherwise indicated, the term “or” is to be considered inclusive. The term “agent” is intended to include a portion of or any combination of hardware, firmware or software to carry out a prescribed function.
- In one exemplary embodiment, there is provided a vehicle entranceway to an enclosure. The entranceway comprises a frame including a pair of laterally-spaced side wall portions and a top wall portion. The frame is adapted to be in contact with an exterior wall of the enclosure and in surrounding relation to a first opening therein. The side wall portions extend outwardly from the exterior wall on opposite sides of an inclined pathway. The inclined pathway and said side and top wall portions cooperate to define a second opening distally located to the exterior wall. The first opening has a lower boundary and the second opening has an upper boundary. The lower boundary is at an elevation higher than that of the upper boundary. Thus, in the presence of a temperature differential within the vehicle entranceway, warmer air is trapped in an upper portion of the vehicle entranceway and above the upper boundary.
- An exemplary embodiment further comprises a blower to increase air flow across and/or along an air barrier layer within the enclosure. In this case, the blower may be provided with a heat source for conditioning the air barrier layer.
- In an exemplary embodiment, there is provided a vehicle entranceway further comprising a heat source being associated with a blower for continuously circulating warm air within the vehicle entranceway. In one example the heat source originates from the inside of the enclosure.
- In an exemplary embodiment, there is provided a vehicle entranceway further comprising at least one vent to egress fumes and/or to ingress fresh air. In this case, the at least one vent being located in the top wall portion.
- In another exemplary embodiment, there is provided a method for managing air flow from a first opening of an enclosure comprising the steps of,
-
- providing a frame including a pair of laterally-spaced side wall portions and a top wall portion,
- providing the frame to be mounted in contact with an exterior wall of the enclosure and in surrounding relation to the first opening, the side wall portions to extend outwardly from the exterior wall,
- providing the side, top wall portions and a pathway to cooperate to define a second opening projecting from the exterior wall and to create a cavity within, and
- providing the first opening with a lower boundary and the second opening with an upper boundary wherein the upper boundary is at an elevation lower than a corresponding lower boundary on the first opening, wherein warmer air in the cavity is trapped in an upper portion of the cavity and above the upper boundary to impede air flow from the enclosure.
- In another exemplary embodiment, there is provided an entranceway to an enclosure for managing air flow from at least one first opening of an enclosure comprising a frame being adapted to be in contact with an exterior wall of the enclosure and including a pair of laterally-spaced side wall portions, a top wall portion, an inclined pathway, and a second opening distally located to the exterior wall, the inclined pathway together with said side and top wall portions sealably cooperating to define an air mass, the first opening having a lower boundary and the second opening having an upper boundary, the lower boundary being at an elevation higher than that of the upper boundary wherein, when there is a temperature differential within the entranceway warmer air will be trapped in an upper portion of the air mass and above the upper boundary to impede air flow from the enclosure.
- In yet another exemplary embodiment, there is provided a vehicle entranceway for managing air flow from a first opening of an enclosure comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion, said frame being adapted to be mounted in contact with an exterior wall of the enclosure and in surrounding relation to the first opening, said side wall portions extending outwardly from the exterior wall, said side and top wall portions cooperating to define a second opening projecting from the exterior wall and to create a cavity within the vehicle entranceway, the first opening having a lower boundary and the second opening having an upper boundary wherein the lower boundary is at an elevation higher than that of the upper boundary, wherein when there is a temperature differential within the vehicle entranceway warmer air will be trapped in an upper portion of the cavity and above the upper boundary to impede air flow from the enclosure.
- In another exemplary embodiment, there is provided a shelter apparatus for controlling air flow from a door opening of an enclosure comprising a frame including a pair of laterally-spaced side panels and a top panel, said frame being adapted to be mounted in contact with an exterior wall of the enclosure and in a surrounding relation to the door opening, said side panels extending outwardly from the exterior wall in relation with an inclined pathway to create a cavity, said side and top panels cooperating to define an air pocket within the cavity with a boundary region at an elevation between the door openings.
- In another exemplary embodiment, there is provided an entranceway apparatus for controlling air flow from a door opening of an enclosure comprising a frame including a pair of laterally-spaced side panels and a top panel, said frame being adapted to be mounted in contact with an exterior wall of the enclosure and in surrounding relation to the door opening, an inclined pathway and said side panels extending outwardly from the exterior wall, said side and top panels cooperating to define an opening projecting from the exterior wall at an elevation operable to create an air barrier with a boundary region at an elevation between the door openings to impede the air flow through the entranceway.
- In another exemplary embodiment, there is provided a vehicle entranceway structure for attachment to an enclosure, comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion, said frame being adapted to be in contact with an exterior wall of the enclosure and in surrounding relation to a first opening therein, said side wall portions extending outwardly from the exterior wall, an inclined pathway and said side and top wall portions cooperating to define a second opening distally located to the exterior wall, the first opening having a lower boundary and the second opening having an upper boundary, the lower boundary being at an elevation higher than that of the upper boundary, the pathway having an upper surface, the side wall portions and top wall portions cooperating with the pathway to form a cavity with an operative boundary region capable of maintaining a mass of air therein at a temperature higher than ambient air external to the enclosure with the mass occupying a volume whose lower boundary lies below the lower boundary of the first opening and above the upper boundary of the second opening, with or without an auxiliary source of heated air being delivered to the cavity.
- In an exemplary embodiment, the side wall and top wall portions include a first layer for establishing the operative boundary region and a second insulating layer for insulating the operative boundary region. In this case, the first and second layer including one or more substrates formed of plastic, wood, metal, glass, concrete or a combination thereof.
- In an exemplary embodiment, the auxiliary heat source includes a duct in communication with the enclosure and/or a heat source within the enclosure to deliver heated air therefrom to the cavity.
- In an exemplary embodiment, the side wall and top wall portions have an R value ranging from 0.1 to 70. In this case, the vehicle entrance way structure R value ranges from 1 to 45.
- An exemplary embodiment further comprises an auxiliary source of heated air being delivered to the cavity. In this case, the auxiliary source of heated air being located at an intermediate region adjacent to the lower boundary. In another case, the auxiliary source of heat including a fan or blower for delivering a flow of air at an elevation between the upper and lower boundaries. In some cases, the auxiliary heat source including a duct in communication with the enclosure and/or a heat source within the enclosure to deliver heated air therefrom to the cavity.
- Several exemplary embodiments of the present invention will be provided, by way of examples only, with reference to the appended drawings, wherein:
-
FIG. 1 is a side cross sectional view of an entranceway of enclosure; -
FIGS. 1a and 1b are side cross sectional views of an entranceway with a vehicle; -
FIG. 1c is a side cross sectional view of a portion of the entranceway and a blower; -
FIGS. 1d and 1e is a top perspective view of the entranceway of the enclosure; -
FIG. 2 is a side cross sectional view of the entranceway of the enclosure with a pedestrian; and -
FIG. 3 is a side cross sectional view of the two entranceways of an enclosure. - Referring to the figures, there is provided an entranceway 10 to an
enclosure 12 having afirst opening 14. The entranceway has a frame 16 including a pair of laterally-spacedside wall portions 18 and atop wall portion 20. The frame 16 is adapted to be in contact with anexterior wall 22 of theenclosure 12 and in surrounding relation to thefirst opening 14. Theside wall portions 18 extend outwardly from theexterior wall 22. As illustrated inFIGS. 1 and 1 a, there is aninclined pathway 24 that, in cooperation with the side andtop wall portions second opening 26 that is distally located to theexterior wall 22. Thefirst opening 14 has alower boundary 28 and thesecond opening 26 has anupper boundary 30. Thelower boundary 28 is at an elevation higher than that of theupper boundary 30. As will be discussed, when there is a temperature differential within theentranceway 10, the warmer air will be trapped, or otherwise contained, in anupper portion 32 of the entranceway 10 and above theupper boundary 30. - As illustrated in
FIG. 1 b, thepathway 24 may have at least one portion which is inclined, that is by having a distal inclined portion adjacent thesecond opening 26 and a substantially horizontal (or non-inclined) portion adjacent thefirst opening 14. However, the converse may also be used in other cases as desired.FIG. 2 illustrates another example which employs two inclined portions joined by an individual horizontal portion. - The frame 16 may be constructed of steel or other suitable materials. The frame 16 may be a retrofit to an existing enclosure and may be sold as a kit (to be discussed later) or may be incorporated in the construction of a new enclosure. The side and
top wall portions FIG. 1 , afirst layer 50 for establishing an operating boundary layer and a second insulating layer 52 may be provided. The first andsecond layers 50 and 52, respectively may each be comprised of wood, glass, concrete or combinations thereof so as to provide protection from the elements and insulation. - As shown in
FIG. 1d , each entranceway has a single opening in the enclosure. However, as illustrated inFIG. 1 e, the enclosure may have several first openings 14 (for example to provide access to neighbouring loading docks). Further, thesecond opening 26 may be of a reduced width relative to the laterally-spaced side wall portions. - The
inclined pathway 24 and the side andtop wall portions cavity 34 within the entranceway 10 to define anair mass 36 therein. - In this case, the
top wall portion 20 may be formed with a flat, domed, A-framed or other configuration, provided that it provides, with the side wall portions, thecavity 34 in a form to effectively receive and contain theair mass 36. As illustrated inFIG. 1 at 38, an air barrier layer may be created between a relativelywarmer air region 40 and a relativelycooler air region 42. In this case, theinclined pathway 24 may include a prepared or unprepared ground surface, a layer of concrete and/or other building materials, and may also be formed to provide a level of insulation in order to moderate the relativelycooler air region 42, thus lowering the temperature differential between the relativelywarmer air region 40 and the relativelycooler air region 42. While not intending to be bound to any one particular operating configuration, the enclosure in one example, may be considered to be working effectively with a relativelywarmer air region 40 when being maintained at a temperature ranging from 29.8 to 42.0 degree Celsius when the relativelycooler air region 42 has a temperature ranging from 21.6 to 28.2 degree Celsius, with the exterior ambient air outside the enclosure at a temperature ranging from 16.8 to 17.1 degree Celsius. As with any gas, air contains molecules that move or agitate. This movement or agitation becomes greater as the temperature rises and the molecules occupy more space. This causes the mass of the air to expand. Although the total mass of the air has not changed, it occupies a greater volume, so any given cubic area will be lighter. Thus theair barrier layer 38, in dead calm conditions, may be generally horizontal. However, theair barrier layer 38 may bend or fluctuate away from the static horizontal position shown. - It should be borne in mind that the air barrier layer, in this case, may only be identifiable by a relatively sharp temperature transition between the warmer and
cooler air regions FIG. 1 , theair barrier layer 38 may not occupy a discrete region but may represent instead a transition zone between the relativelywarmer air region 40 and the relativelycooler air region 42. - Now referring to
FIGS. 1, 1 a and 1 b, thepathway 24 may be used for vehicular, pedestrian and/or wheelchair use. Other uses have been contemplated, for example in manufacturing wherein the pathway may be a conveyor or an assembly line, as shown inFIG. 3 . For example, the pathway may travel through a heated enclosure having a first entranceway leading into the enclosure and a second entranceway leading out. The heated air mass is trapped within the cavity created by the side and top wall portions of each entranceway. - Now referring to
FIG. 1 c, the enclosure may be provided with one or more blowers, one of which is shown at 44 to increase air flow across or along theair barrier layer 38. In this example, theblower 44 is associated with theenclosure 12 just under thelower boundary 28 of thefirst opening 14. In another configuration, as shown inFIG. 1 , the blower 44 (in this case in a group of blowers) may be perpendicular to thepathway 24 and thus blowing in a sideways direction rather than lengthwise as is the case with theblower 44 inFIG. 1 c. In yet another example, the blower may work in conjunction with, or be replaced by, a heat source for conditioning the air mass. In the example ofFIG. 1 c, the heat source 46 is provided in the form of a number of heat ducts 46, and is associated withblower 44 for continuously circulatingwarm air 40 within the entranceway 10 to enhance theair barrier layer 38. The heat source 46 may be, for example, a natural gas heater, or other fossil fuel or electric heater, and is associated with the entranceway. Alternatively, the heat source may be provided in the form of a duct in communication with an interior space of the enclosure or another heat source inside the enclosure for drawing warm air from the enclosure to the warmer air region. Another example for providing a heat source 46 for the entranceway 10 may be to heat thepathway 24 or a portion of thepathway 24, by way of radiant heating circuits, such as by electrical or circulating heating fluid for instance. - As illustrated in
FIG. 1 b, there may be provided at least oneventing unit 48 to remove fumes from inside thecavity 34 and/or to draw in fresh air thereto. In this example, the ventingunit 48 is located in thetop wall portion 20. There may also be a venting unit for use in the summer months to regulate the temperature differential within the entranceway. Further, there may be an additional trap with a vent for fumes as illustrated inFIG. 1b at 49. - There may also be provided, a kit or combination of parts for retrofitting an entranceway to an enclosure. The kit or combination of parts may include a frame comprising a pair of laterally-spaced side wall portions and a top wall portion. The kit may also include fasteners for assembly of the frame and/or attachment of the frame to an exterior wall of the enclosure in a surrounding relation to the first opening. The side wall portions are assembled in an outwardly extending fashion from the exterior wall. In this case, the walls may either cover an existing inclined pathway or a pathway may be constructed so that the
upper boundary 30 of the second opening is below thelower boundary 28 of thefirst opening 14. The kit may further include one or more heat sources, fans and/or vents or the like. - The entranceway manages air flow by providing a cavity created by a pair of laterally-spaced side wall portions and a top wall portion. The side wall portions extend outwardly from the exterior wall and, with the top wall portions, cooperate to define a second opening projecting from the exterior wall. The second opening is arranged so that its upper boundary is at a lower elevation than the corresponding lower boundary of the first opening. In the presence of a temperature differential within the entranceway, relatively warmer air is trapped in an upper portion of the cavity and above the upper boundary. When relatively warmer air is found within the cavity and above the upper boundary and at a temperature which is equal to or greater than the air inside the enclosure, air flow from the enclosure to the cavity through the first opening should generally be impeded, or at least reduced, while allowing the first and second openings to indeed remain open. In this instance, the relatively warmer air may itself have a temperature differential between the air barrier layer and the inside surface of the wall and roof portions. The entranceway is believed to provide maximum benefit when the temperature of the relatively warmer air in the
warmer air region 40 is equal to or greater than the air inside the enclosure, as aided, in one example, by the use of blowers or heating ducts. Meanwhile, there may also be beneficial effects when the temperature of the relatively warmer air is below the temperature of the air inside the enclosure. The blowers may provide the benefit of reducing the temperature differential by constantly mixing the relatively warmer air while the heat source may thus function to add heated air to overcome air leakage or heat loss as the case may be. The speed or interval of operation of the blowers and the heat sources may also be adjusted according to the changing temperatures of the exterior ambient air, wind conditions of the exterior ambient air, and the temperatures of the relatively warmer air region and the relatively cooler air region, that is on either side of the transition zone. - Another benefit of the entrance way may lie in the fact that the transition zone is above the upper boundary of the second opening and below the lower boundary of the first opening, thereby reducing air flow at both the first and second openings. This may be especially relevant at the second opening if the blowers and/or heat sources are configured to provide only sufficient air movement and heat to maintain a relatively stable and even temperature through out the relatively warmer air region while reducing the growth of the mass of the relatively warmer air region so that it does not migrate downwardly and induce an alternate escape route for the relatively warmer air at the second opening as shown by the dashed arrow E in
FIG. 1 . - Further features of exemplary entranceway embodiments according to the invention may be found in the reference materials submitted as “Appendix to the Specification”.
- While the present invention has been described for what are presently considered the preferred embodiments, the invention is not so limited. To the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (1)
1. An entranceway to an enclosure, comprising a frame including a pair of laterally-spaced side wall portions and a top wall portion, said frame being adapted to be in contact with an exterior wall of the enclosure and in surrounding relation to a first opening therein, said side wall portions extending outwardly from the exterior wall on opposite side of an inclined pathway, the inclined pathway and said side and top wall portions cooperating to define a second opening distally located to the exterior wall, the first opening having a lower boundary and the second opening having an upper boundary, the lower boundary being at an elevation higher than that of the upper boundary, wherein, in the presence of a temperature differential within the entranceway, warmer air is trapped in an upper portion of the entranceway and above the upper boundary.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/845,741 US20180106487A1 (en) | 2009-01-28 | 2017-12-18 | Managing air flow |
US16/840,963 US20200333030A1 (en) | 2009-01-28 | 2020-04-06 | Managing air flow |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14801409P | 2009-01-28 | 2009-01-28 | |
US12/695,061 US8776457B2 (en) | 2009-01-28 | 2010-01-27 | Enhanced entranceway |
US14/303,985 US9869480B2 (en) | 2009-01-28 | 2014-06-13 | Managing air flow |
US15/845,741 US20180106487A1 (en) | 2009-01-28 | 2017-12-18 | Managing air flow |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/303,985 Continuation US9869480B2 (en) | 2009-01-28 | 2014-06-13 | Managing air flow |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/840,963 Continuation US20200333030A1 (en) | 2009-01-28 | 2020-04-06 | Managing air flow |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180106487A1 true US20180106487A1 (en) | 2018-04-19 |
Family
ID=42352992
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/695,061 Active 2031-10-23 US8776457B2 (en) | 2009-01-28 | 2010-01-27 | Enhanced entranceway |
US14/303,985 Active 2030-03-23 US9869480B2 (en) | 2009-01-28 | 2014-06-13 | Managing air flow |
US15/845,741 Abandoned US20180106487A1 (en) | 2009-01-28 | 2017-12-18 | Managing air flow |
US16/840,963 Abandoned US20200333030A1 (en) | 2009-01-28 | 2020-04-06 | Managing air flow |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/695,061 Active 2031-10-23 US8776457B2 (en) | 2009-01-28 | 2010-01-27 | Enhanced entranceway |
US14/303,985 Active 2030-03-23 US9869480B2 (en) | 2009-01-28 | 2014-06-13 | Managing air flow |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/840,963 Abandoned US20200333030A1 (en) | 2009-01-28 | 2020-04-06 | Managing air flow |
Country Status (2)
Country | Link |
---|---|
US (4) | US8776457B2 (en) |
CA (1) | CA2691245C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013221516A1 (en) * | 2013-10-23 | 2015-04-23 | Bayerische Motoren Werke Aktiengesellschaft | An air supply device for a vehicle seat and method for operating the air supply device |
BR112017015295A2 (en) * | 2015-01-15 | 2018-01-09 | Big Box Dairy Llc | creation structures and methods |
US10743516B2 (en) | 2017-02-10 | 2020-08-18 | Big Box Dairy Llc | Livestock structures and related methods |
JP6411582B1 (en) * | 2017-06-02 | 2018-10-24 | 日本エアーテック株式会社 | Air curtain device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030140580A1 (en) * | 2002-01-28 | 2003-07-31 | Pevar Marc D. | Handicap accessible construction utilizing ramps connecting building levels seperated by half story height |
Family Cites Families (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1634498A (en) * | 1926-05-15 | 1927-07-05 | Roy C Hecox | Automobile hotel and garage |
US3229609A (en) | 1964-01-15 | 1966-01-18 | Nat Ind Equipment Co | Multiple air screen for use with a doorway |
US3254457A (en) | 1964-12-21 | 1966-06-07 | Leigh M Gedney | Equilibrium (air) door |
US3294006A (en) | 1965-02-23 | 1966-12-27 | Berner Ind Inc | Means for providing an air curtain at an open doorway |
US3324783A (en) | 1965-05-19 | 1967-06-13 | Clark Equipment Co | Air directing grid construction |
US3362469A (en) | 1966-01-03 | 1968-01-09 | Berner Ind Inc | Air curtain |
US3683578A (en) * | 1970-05-07 | 1972-08-15 | Harold M Zimmerman | Concrete building construction and component parts used therewith |
AR203992A1 (en) | 1972-04-07 | 1975-11-12 | Berner E | APPARATUS FOR AIR CURTAINS AND CLOSING DOOR WITH APPARATUS FOR AIR CURTAINS |
US3935684A (en) | 1974-12-12 | 1976-02-03 | Dubugue Awning & Tent Company | Loading dock shelters |
US4003170A (en) | 1975-10-15 | 1977-01-18 | W. B. Mcguire Co., Inc. | Loading dock shelter structure |
DE2619783C2 (en) | 1976-05-05 | 1985-04-18 | Wegmann & Co, 3500 Kassel | Circuit for inputting a signal of the ammunition selection into a fire control computer |
US4049411A (en) | 1976-07-23 | 1977-09-20 | Ppg Industries, Inc. | Forming level air conditioning system |
US4062157A (en) | 1976-12-27 | 1977-12-13 | Medalist Industries, Inc. | Dock shelter |
US4405008A (en) | 1978-05-22 | 1983-09-20 | Effie Hoopman Hazlett | Adjustable heat shield |
USD256164S (en) | 1978-06-07 | 1980-07-29 | Plastech Corporation | Door canopy |
US4228729A (en) | 1978-06-19 | 1980-10-21 | Messick Paul W | Building roof structure |
DE2841951C3 (en) | 1978-09-27 | 1982-03-04 | Pierburg Gmbh & Co Kg, 4040 Neuss | Carburetor for internal combustion engines with an acceleration pump |
US4323322A (en) | 1979-07-05 | 1982-04-06 | Dome Petroleum Limited | Warm air canopy system for providing ice-free zone |
US4282689A (en) | 1979-08-20 | 1981-08-11 | Royer George R | Portable door covering for indoor heat savings |
US4365452A (en) | 1981-06-04 | 1982-12-28 | Woodford Manufacturing Company | Loading dock canopy |
US4453383A (en) * | 1981-07-27 | 1984-06-12 | Collins Wayne H | Apparatus for and method of utilizing solar energy |
FR2542025B1 (en) | 1983-03-02 | 1985-06-21 | Travaux Elect Meca Cie Indle | INFLATABLE STRUCTURE FOR SHELTER USE |
US4574543A (en) | 1983-08-11 | 1986-03-11 | Crosson Robert J | Truck bay door apparatus |
US4608785A (en) | 1985-02-11 | 1986-09-02 | James A. Rhodes & Associates | Environmentally controlled building |
USRE33019E (en) | 1985-02-11 | 1989-08-15 | Environmentally controlled building | |
US4637176A (en) | 1985-10-15 | 1987-01-20 | James A. Rhodes | Elevator air lock |
US4638612A (en) | 1986-01-06 | 1987-01-27 | Kelley Company, Inc. | Dock shelter |
FI78548C (en) | 1986-12-30 | 1989-08-10 | Halton Oy | air Distribution |
US4848386A (en) | 1988-10-07 | 1989-07-18 | Cooper Wallace L | Small vehicle garage |
FI84096B (en) | 1990-01-31 | 1991-06-28 | Halton Oy | UNDERTAKSKONSTRUKTION OCH FOERFARANDE FOER ATT BRINGA LUFTEN ATT STROEMMA I SAMBAND MED UNDERTAKSKONSTRUKTIONEN. |
US5109643A (en) | 1990-08-08 | 1992-05-05 | Speers George A | Overhanging structure |
US5319882A (en) | 1991-03-07 | 1994-06-14 | Butler Manufacturing Corporation | Entrance system |
FR2683589B1 (en) | 1991-11-12 | 1994-01-28 | Nergeco | HANDLING DOOR WITH WATERPROOF CURTAIN. |
US5473846A (en) | 1992-12-24 | 1995-12-12 | Rite-Hite Corporation | Loading dock shelter with a rotatable seal |
US5394662A (en) | 1993-06-17 | 1995-03-07 | Rite-Hite Corporation | Seal assembly for a loading dock shelter |
US5878803A (en) | 1993-09-08 | 1999-03-09 | Kraeutler; Bernard | Goods-handling door |
CA2103227A1 (en) | 1993-11-16 | 1995-05-17 | Ronald R. Lefebvre | Shelter |
FR2732718A1 (en) | 1995-04-07 | 1996-10-11 | Nergeco Sa | SECURITY SYSTEM FOR A DEVICE FOR OPENING AND CLOSING AN INDUSTRIAL DOOR |
US5634545A (en) * | 1995-06-30 | 1997-06-03 | Fairchild International Inc. | Apparatus for continuously conveying coal from a continuous mining machine to a remote floor conveyor |
US5601131A (en) | 1996-01-02 | 1997-02-11 | Morris; Drew W. | Canopy-forming door |
US5799680A (en) | 1996-10-09 | 1998-09-01 | Dorflinger; Russell C. | Canopy system for outside construction |
US5909777A (en) * | 1996-11-12 | 1999-06-08 | Jamison Family Trust | Method and apparatus for stopping the spread of a fire in an underground mine |
US5927025A (en) | 1997-10-01 | 1999-07-27 | Fairborn Usa Inc. | Mechanical retractable railway dock shelter |
FR2770330B1 (en) * | 1997-10-24 | 2000-01-14 | Cogema | METHOD AND DEVICE FOR CONTAINMENT BY THERMAL LAMINATION |
US6170204B1 (en) | 1998-07-29 | 2001-01-09 | Kelley Company, Inc. | Vehicle shelter having channels |
US6106387A (en) | 1999-02-13 | 2000-08-22 | Smith; George R. | Conditioned and controlled air vestibule for refrigerated warehouse |
US6371143B1 (en) | 1999-05-07 | 2002-04-16 | Johnson Outdoors Inc. | Canopy structure |
US6425214B1 (en) | 1999-07-07 | 2002-07-30 | Rite-Hite Holding Corporation | Vehicle sealing device |
FR2800114B1 (en) | 1999-10-25 | 2001-12-07 | Lohr Ind | WAITING AND LANDING STATION FOR URBAN PUBLIC TRANSPORT |
NL1020907C2 (en) | 2002-06-20 | 2003-12-23 | Boon Edam Bv | Hinged door. |
US6951084B2 (en) | 2002-07-31 | 2005-10-04 | Rite-Hite Holding Corporation | Draft shield for a loading dock shelter |
US6845780B2 (en) | 2002-12-13 | 2005-01-25 | Charles A. Bishirjian | Personal canopy apparatus |
US6948285B2 (en) | 2003-02-26 | 2005-09-27 | Rite-Hite Holding Corporation | Loading dock shelter with hollow side or head members |
US6957679B2 (en) | 2003-03-26 | 2005-10-25 | Powell & Powell Supply Co., Inc. | Retractable awning |
US6725603B1 (en) | 2003-06-09 | 2004-04-27 | Andrew L. Pansini | Emergency exit revolving door |
US7185463B2 (en) | 2003-12-30 | 2007-03-06 | Rite-Hite Holding Corporation | Water runoff deflector for a vehicle at a loading dock |
NL1031200C2 (en) | 2006-02-21 | 2007-08-22 | Biddle B V | Air outlet grille and an air curtain device. |
NL2003616C2 (en) | 2009-10-09 | 2011-04-12 | Biddle B V | AIR CURTAIN DEVICE AND METHOD FOR REALIZING A HORIZONTAL AIR CURTAIN WITH ADDITIONAL AIRFLOW. |
-
2010
- 2010-01-27 US US12/695,061 patent/US8776457B2/en active Active
- 2010-01-27 CA CA2691245A patent/CA2691245C/en active Active
-
2014
- 2014-06-13 US US14/303,985 patent/US9869480B2/en active Active
-
2017
- 2017-12-18 US US15/845,741 patent/US20180106487A1/en not_active Abandoned
-
2020
- 2020-04-06 US US16/840,963 patent/US20200333030A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030140580A1 (en) * | 2002-01-28 | 2003-07-31 | Pevar Marc D. | Handicap accessible construction utilizing ramps connecting building levels seperated by half story height |
Also Published As
Publication number | Publication date |
---|---|
US20100186319A1 (en) | 2010-07-29 |
CA2691245A1 (en) | 2010-07-28 |
US20200333030A1 (en) | 2020-10-22 |
CA2691245C (en) | 2018-09-25 |
US20140326797A1 (en) | 2014-11-06 |
US9869480B2 (en) | 2018-01-16 |
US8776457B2 (en) | 2014-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20200333030A1 (en) | Managing air flow | |
US4228729A (en) | Building roof structure | |
EP1439353A1 (en) | Conditioned vestibule for a cold storage doorway | |
US20120298330A1 (en) | Air path rain guard for a cooling system of a weatherproof enclosure for electrical equipment and the like | |
US8556689B2 (en) | Building heating and cooling system | |
JP2005105732A (en) | Curtain wall with ventilation function and building provided with the same | |
KR100770969B1 (en) | The functional double-skin facades with openable outside window for natural ventilation and the control system thereof | |
CA1178072A (en) | Atmospheric air intake apparatus for coolers | |
JP2021018011A (en) | Ventilation air-conditioning structure | |
KR100524128B1 (en) | Indoor unit of an air conditioner | |
JP2004077113A (en) | Air shutter and its setting method | |
JP3944181B2 (en) | Building air conditioning system | |
JP2000144956A (en) | Ventilating structure of mid- or -high-rise apartment | |
JP3082061B2 (en) | Air conditioning method for heating or heating and cooling | |
US20080057851A1 (en) | Method for restricting heat transmission through a wall opening and air curtain | |
US20050056232A1 (en) | Pet shelter | |
US5123876A (en) | Attic fan cover | |
US20040055914A1 (en) | Air-conditioned equipment cabinet, in particular for telephony | |
CN213775032U (en) | Frame construction suitable for flat-open window | |
US20060102297A1 (en) | Method and apparatus for temporary climate control of an area | |
KR102630529B1 (en) | Livestock transport vehicle | |
JP2010116670A (en) | Building | |
JP4272839B2 (en) | Indoor air circulation device | |
JPH0518023B2 (en) | ||
JP3010025B2 (en) | Heating and ventilation structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |