Abstract
The gas exchange termination assembly overcomes the affects of fluid turbulence caused by wind, drafts, and air pressure. The invention can be applied to gas burning devices under 4,000 BTU input. Turbulent flow of gases at the gas exchange termination assembly are mitigated by the location of slots and openings in the gas exchange termination assembly for both intake air and exhaust gases. The gas exchange termination assembly is connected, coaxially through the building structural wall, to a sealed combustion system in order that all gases are drawn from and return to the same general location (directly) outside the building. The gas exchange termination assembly includes an intake air hood for intake air with additional intake air openings, an exhaust pipe with slots and a plug to move products of combustion at angles to the concentric pipe as the intake and exhaust gases enter and exit.
Claims
1. A gas exchange termination assembly to reduce exhaust and intake air pressure differences, comprising: an exhaust pipe 15—FIG. 1 having exhaust slots 19—FIG. 1, the exhaust pipe having a plug 18—FIG. 1 to direct exhaust flow transversely (90 degrees to the flow of gases in the exhaust pipe 15—FIG. 1), with an intake air hood 10—FIG. 1 that supports air intake pipe 11—FIG. 1, and an intake air hood 10—FIG. 1 with air openings 12—FIGS. 1 & 2 to control intake air flow.
2. The gas exchange termination assembly of claim 1, wherein the said exhaust pipe 15—FIG. 1 comprises: a pipe, with a said plug 18—FIG. 1 placed within the pipe to direct exhaust flow transversely (90 degrees to the flow of gases in the exhaust pipe 15—FIG. 1) through said exhaust slots 19—FIG. 1.
3. The gas exchange termination assembly of claim 1, wherein the said exhaust pipe 15—FIG. 1 comprises: said exhaust slots 19—FIG. 1, located on the top and bottom of the said exhaust pipe 15 FIG. 1 and before the said exhaust plug 18—FIG. 1, through which the exhaust flows to the outside air.
4. The gas exchange termination assembly of claim 1, wherein the said intake air hood 10—FIG. 1 comprises: a metal awning-shaped configuration to support the said exhaust pipe 15—FIG. 1 that protects the intake air pipe 11—FIG. 1 from the atmospheric conditions, weather conditions, and has additional circular intake openings 12—FIGS. 1 & 2 through which intake air flows from the outside to an intake air pipe 11—FIG. 1.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0010] FIG. 1 shows a side elevation view of the gas exchange termination assembly. This view is given as if viewing the gas exchange termination assembly as it would extend through a structural wall that separates two independent environs, e.g., the inside and outside of a building structure. The horizontal length of the intake air pipe 11—FIG. 1 is slightly longer than the width of the building structural wall thickness. The gas exchange termination assembly is held to the wall by fasteners 17—FIG. 1 that anchor to the building wall structural components.
[0011] FIG. 2 shows the front elevation view of the gas exchange termination assembly. This view angle is as if viewing from outside the building. The exhaust plug 18—FIG. 2, located inside the exhaust pipe, can be seen as a hash-lined circle 18—FIG. 2 and the pin 16—FIG. 2 is located behind the plug.
[0012] FIG. 3 shows the bottom view of the gas exchange termination assembly. This view shows the rectangular opening of the intake air hood. The rectangular opening of the intake air hood is open in this view. This opening allows outside air to move into the intake air pipe 11—FIG. 3 unobstructed. The intake air pipe is open to the intake air hood. Intake air holes 12—FIG. 3 also allow intake air to move into the intake air hood and to the intake air pipe 11—FIG. 3.
[0013] FIG. 4 shows a typical connection, from the gas exchange termination assembly located on the wall outside the building structure and connecting concentrically through the structure wall 20—FIG. 4 to piping that commutes to a gas burning appliance and burner box. The burner box would typically be connected integrally to the appliance (appliance not shown). All components, 21, 22, 23, 24 of FIG. 4, from the inside wall to the burner box that would be located integrally on the appliance are ancillary to this application and do not apply to the invention. FIG. 4 is included to show the location of the gas exchange termination assembly in relation to the gas burning appliance and to provide an example of one type of piping arrangement between the gas exchange termination assembly and the burner box.
DESCRIPTION OF EMBODIMENTS
[0014] The invention is called a gas exchange termination assembly. The gas exchange termination assembly is an assemblage of parts, 11, 12, 15, 16, 17, 18 & 19 in FIG. 1, and can be considered as the gas termination assembly. The gas exchange termination assembly is constructed to control the flow of gases without other means of mechanical contrivance or powered conveyance, e.g., blowers. The gas exchange termination assembly is designed to be installed through the structural wall of a building requiring a single penetration for intake and exhaust piping. The gas exchange termination assembly is connected, by ancillary piping (21, 22, and 23 in FIG. 4), to an ancillary or burner box 24—FIG. 4 via ancillary concentric and/or non-concentric piping. The burner box receives intake air or outside air for combustion; burns a gaseous fuel; and produces exhaust gases, also known as flue gas, as a byproduct of the burning process. In FIG. 1, an interconnecting pipe referred to as an air intake pipe 11—FIG. 3 commutes outside air to the combustion chamber, through ancillary piping 21, 22, & 23—FIG. 4, in order to supply intake air (phantom arrow from left to right in FIG. 1). An exhaust pipe 15—FIG. 1 commutes exhaust gases from the combustion chamber (phantom arrow from right to left in FIG. 1). Intake air components of the gas exchange termination assembly are composed of an intake air hood 10—FIG. 1 that is open to outside air (intake air) at the bottom and has other openings 12—FIG. 1 (five shown in FIG. 2) to commute intake air through the intake air hood 10—FIG. 1. The intake air hood 10—FIG. 1 commutes with the air intake pipe 11—FIG. 1 that is open to the intake air hood 10—FIG. 1 and has a common radial center point and coaxial relationship with the exhaust pipe 15—FIG. 1. The exhaust pipe 15—FIG. 1 is located coaxially within the intake air pipe 11—FIG. 1 and extends through the intake air hood 10—FIG. 1, beyond the holding pin 16—FIG. 1, projecting beyond and into the outside air.
[0015] The gas exchange termination assembly is comprised of an exhaust pipe 15—FIG. 1 that is at the internal center of a coaxial piping arrangement with the exhaust commuting from the burner box through ancillary piping; connecting to the exhaust pipe 15—FIG. 1; and extending through and beyond the intake air hood 10—FIG. 1. The exhaust pipe, has an exhaust gas plug 18—FIG. 1, that requires the exhaust gas to turn direction 90 degrees to the flow of gases in the exhaust pipe 15—FIG. 1 before exiting through slots 19—FIG. 1 to the outside air. Exhaust gases commute from the burner box, through ancillary piping (21, 22, and 23—FIG. 4) to the exhaust pipe 15—FIG. 4 and through the building structural wall to the outside without mingling with, mixing with, diluting with, or sending exhaust gases to the inside of the building structure.
[0016] For sake of illustration of the invention, the intake air hood shows a total of seven combined intake air openings in drawings FIG. 1 and FIG. 2. The intake air hood 10—FIG. 2 has intake air openings (showing five round penetrations 12—FIG. 2) that allow outside air to entering the air intake pipe 11—FIG. 1 through the intake air hood 10—FIG. 1. The intake air hood 10—FIG. 1 and intake air openings 12—FIG. 1 (showing one round opening with a similar opening directly behind 12—FIG. 1, for a total of 2 in this view) permit less turbulent flow of intake air with relation to outside air, thus helping the gas exchange termination assembly to maintain a neutral pressure in the burner box.
[0017] The exhaust pipe 15—FIG. 1 extends through the intake air hood 10—FIG. 1 and is plugged 18—FIG. 1 and slotted 19—FIG. 1 to require exhaust gases to change direction 90 degrees from the flow of gases in the exhaust pipe 15—FIG. 1 before exhaust gases exit to the outside air. The slots 19—FIG. 1 are positioned at the top and bottom of the exhaust pipe to allow rain and condensed moisture to drain from of the exhaust pipe 15—FIG. 1. The exhaust slots 19—FIG. 1 reduce atmospheric disturbance, weather conditions, that might affect the neutral pressure in the burner box (24—FIG. 4, ancillary to the invention).
REFERENCE SIGNS LIST
[0018] 10—Intake Air Hood
[0019] 11—Intake Air Pipe
[0020] 12—Intake Air Openings (in Intake Air Hood), 7 Openings Shown
[0021] 13—(Not Shown)
[0022] 14—(Not Shown)
[0023] 15—Exhaust Pipe
[0024] 16—Pin (to hold Exhaust Pipe from moving toward inside of building)
[0025] 17—Fasteners (to secure gas exchange termination assembly to building)
[0026] 18—Plug (inside Exhaust Pipe)
[0027] 19—Slots (top and bottom of Exhaust Pipe), 14 Slots Shown
[0028] 20—Building or Structure Wall (ancillary to the invention)
[0029] 21—Interconnecting Flexible Intake Air Pipe (ancillary to the invention)
[0030] 22—Intake Air Pipe (from flexible pipe to burner box) (ancillary to the invention)
[0031] 23—Insulation Pack (protects exhaust pipe from burner box) (ancillary to the invention)
[0032] 24—Burner Box (also known as Combustion Chamber) (ancillary to the invention)
