Passive roof exhausting system

Patent metadata

Field	Value
Publication number	US-10088181-B2
Application number	US-201514971793-A
Country	US
Kind code	B2
Filing date	Dec 16, 2015
Priority date	Dec 16, 2015
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A system for passively exhausting air from a structure includes at least one pair of modules arranged on a roof of the structure. Each module has an exhaust face on one side and a sloped surface on the opposite side, and can receive exhaust air that flows upward from inside the structure. The modules can be arranged in pairs facing one another, with one of the sloped surfaces facing a direction of an environmental flow of air, so that the environmental air can flow up the sloped surface of one module and down the sloped surface of the other module without impinging on the exhaust faces of either module. The pairs can also be arranged side-by-side in an array, which can be expanded with additional pairs of modules to exhaust from the structure at a greater rate.

First claim

What is claimed is:

1. A system, comprising:
a structure;
a roof on the structure, the roof comprising a flat portion;
a plurality of voids through the flat portion, the voids being positioned such that warm air in the structure flows to the plurality of voids;
first and second modules mounted on the flat portion and exposed to an outdoor environment outside of the structure, each of the first and second modules comprising:
an exhaust face in a substantially vertical configuration on a side of the module, the exhaust face having an exhaust opening;
an intake face in a substantially horizontal configuration at a bottom of the module, the intake face comprising an intake opening aligned with a respective void of the plurality of voids and in fluid communication with the void;
a conduit between the exhaust face and the intake face, the conduit comprising a sloped face opposite the exhaust face and connected with the exhaust face and the intake face and configured to direct air flowing from the intake face to the exhaust face, the sloped face being straight from a lower extent to an upper extent of the sloped face, and the sloped face substantially spanning a vertical height of the exhaust face; and
wherein the exhaust face of the first module faces the exhaust face of the second module and is separated by a first separation distance from the second module, the separation distance being sufficient so that ambient air flowing across the first and second modules, from the first module to the second module, creates a Venturi effect between the two exhaust faces, enhancing a draw of the warm air from the structure, through the first and second voids, and out of the structure through the first and second modules.

2. The system of claim 1 , wherein the first and second modules are one module pair of multiple opposing module pairs mounted on the flat portion, the module pairs being arranged in parallel along an axis to form an array of modules, wherein each module is arranged in fluid communication with a different void of the plurality of voids.

3. The system of claim 2 , wherein:
the structure comprises a datacenter; and
a size of each module in the array is based on a rate of air throughput required to exhaust a quantity of heat generated in the datacenter.

4. The system of claim 2 , wherein:
the structure comprises a datacenter; and
a number of modules in the array is based on a rate of air throughput required to exhaust a quantity of heat generated in the datacenter.

5. The system of claim 2 , wherein the axis is oriented perpendicular to a crossflow of air, such that the crossflow of air generates a low pressure region in a space between each pair of modules in the array, such that the low pressure region accelerates a rate of exhaust from the datacenter.

6. The system of claim 5 , wherein the structure further comprises a passive intake, the passive intake including an intake vent on a side of the structure facing a direction of the crossflow of air, such that the crossflow of air generates a high pressure region at the passive intake.

7. A system, comprising:
a structure;
a roof on top of the structure;
a void through the roof; and
a module comprising:
an exhaust face in a substantially vertical configuration on a first side of the module, the exhaust face having an exhaust opening;
an intake face in a substantially horizontal configuration at a bottom of the module, the intake face comprising an intake opening configured to align with the void in the roof of the structure; and
a conduit between the exhaust face and the intake face, the conduit comprising a sloped face opposite the exhaust face and connected with the exhaust face and the intake face and configured to direct air flowing from the intake face to the exhaust face, the sloped face being straight from a lower extent to an upper extent of the sloped face, and the sloped face substantially spanning a vertical height of the exhaust face; wherein
the module is fluidly connected with the void of the roof, such that an exhaust flow of warm air flows passively out of the structure through the void and through the module.

8. The system of claim 7 , further comprising:
a footing assembly connected with the bottom of the module, the footing assembly being configured to align the intake face of the module with the void in the roof of the structure, to prevent water from entering the structure, and to connect the intake opening with the void.

9. The system of claim 7 , wherein the conduit further comprises sidewalls, and further comprising:
a catchment interior to the module and connected with the sloped wall and the sidewalls, the catchment being configured to trap condensation flowing from an interior surface of the sloped wall or interior surfaces of the sidewalls.

10. The system of claim 7 , further comprising:
a hood projecting from the exhaust face of the module, the hood having a sloped top surface that slopes downward away from the exhaust face, the hood being configured to direct a flow of air flowing toward the exhaust face upward over the module, and being configured to direct rain or debris falling on the module away from the exhaust face.

11. The system of claim 7 , wherein the conduit further comprises sidewalls, and further comprising:
an insulation layer connected with the interior surface of the sloped wall or interior surfaces of the sidewalls, the insulation layer being configured to prevent condensation inside the module.

12. The system of claim 7 , further comprising:
a plurality of hoods projecting from the exhaust face of the module, each hood of the plurality of hoods having a sloped top surface that slopes downward away from the exhaust face and is configured to direct rain or debris falling on the module away from the exhaust face, and a top hood of the plurality of hoods being configured to direct a flow of air flowing toward the exhaust face upward over the module.

13. The system of claim 7 , further comprising:
a plurality of the modules including the module; and
a plurality of the voids including the void, wherein
the voids are arranged in rows; and
each of the modules is fluidly connected with a respective one of the voids, such that first and second ones of the modules, mounted on voids in adjacent ones of the rows, have respective exhaust faces that face each other.

14. The system of claim 13 , wherein:
the plurality of voids are arranged in first, second, and third rows; and
each module in the third row is oriented such that each respective exhaust face of the modules in the third row faces the exhaust face of a respective module of the first row.

15. The system of claim 7 , further comprising:
a plurality of the modules including the module; and
a plurality of the voids including the void, wherein
the voids are arranged in a curved configuration;
each of the modules is fluidly connected with a respective one of the voids; and
each of the modules is oriented such that each respective exhaust face of the modules faces toward an interior of the curved configuration.

16. The system of claim 7 , wherein the exhaust face is vertical.

17. The system of claim 7 , wherein the exhaust face is a singular exhaust face facing in one exhaust direction, the module lacking additional exhaust faces.

18. The system of claim 7 , wherein the sloped face extends upward from a first location proximate the intake face and distal from the exhaust face to a second location proximate the exhaust face and distal from the intake face.

Assignees

• Amazon Tech Inc

Inventors

• Wilding Robert David
• Ross Peter George
• Quinlivan Geri-Ann
• Gillooly Alan Donald
• Abbott Sean Patrick

Classifications

• F24F2221/16

  mounted on the roof · CPC title

• H05K7/20745

  within rooms for removing heat from cabinets, e.g. by air conditioning device · CPC title

• F24F2221/52

  Weather protecting means, e.g. against wind, rain or snow · CPC title

• F24F7/02 Primary

  Roof ventilation (ventilation of roof coverings E04D) · CPC title

• F24F7/10

  with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air {into rooms or spaces, e.g. ceiling air-diffusers} F24F13/06) · CPC title