초록 ▼

Manifold pipe assemblies and exhaust manifold assemblies, optionally in combination with internal combustion engines, for receiving hot gases from such heat source, and conveying such hot gases from the heat source toward a lower temperature environment. Such manifold pipe assembly comprises a manif

Manifold pipe assemblies and exhaust manifold assemblies, optionally in combination with internal combustion engines, for receiving hot gases from such heat source, and conveying such hot gases from the heat source toward a lower temperature environment. Such manifold pipe assembly comprises a manifold pipe defining a gas path for conveying hot gases from an inlet end to an outlet end, a jacket pipe encompassing the manifold pipe along a portion of the length of the manifold pipe. The jacket pipe has a second inlet end disposed toward the inlet end of the manifold pipe, and a second outlet end disposed toward the outlet end of the manifold pipe. The jacket pipe is closed about the manifold pipe at the second inlet end, to form a closed cooling chamber between the manifold pipe and the jacket pipe. An inlet pipe conveys cooling liquid into the cooling chamber. A closed end chamber portion of the cooling chamber is defined optionally between the inlet pipe and a face of the cooling chamber disposed toward the manifold end of the manifold pipe, sufficiently close to the inlet end of the cooling chamber in combination with the closed end chamber portion being suitably configured, as to maintain sufficient flow of cooling liquid at the inlet end, into and through the closed end chamber portion, to preclude development of localized hot spots on the manifold pipe adjacent the cooling chamber when cooling water is routinely passing through the cooling chamber during routine operating conditions of the pipe assembly. Some embodiments preferably include an enlarged section of the cooling chamber proximate or at the inlet end of the cooling chamber, which acts as an accumulation reservoir for increasing residence time of the cooling liquid therein, thereby to absorb additional heat from the manifold pipe adjacent the inlet end of the cooling chamber.

대표청구항 ▼

1. A manifold pipe assembly for receiving hot gases from a heat source, and conveying such hot gases from the heat source toward a lower temperature environment, said manifold pipe assembly comprising:(a) a manifold pipe having a first inlet end and a single inlet opening for receiving hot gases fro

1. A manifold pipe assembly for receiving hot gases from a heat source, and conveying such hot gases from the heat source toward a lower temperature environment, said manifold pipe assembly comprising:(a) a manifold pipe having a first inlet end and a single inlet opening for receiving hot gases from the heat source at the inlet end, and a first outlet end and an outlet opening at the first outlet end, and a length between the first inlet end and the first outlet end, said manifold pipe defining a gas path for conveying hot gases from the single inlet opening to the outlet opening; (b) a jacket pipe disposed outwardly of, and encompassing, said manifold pipe along a portion of the length of said manifold pipe, said jacket pipe having a second inlet end disposed toward the first inlet end of said manifold pipe, and a second outlet end disposed toward the first outlet end of said manifold pipe, said jacket pipe being closed about and secured to said manifold pipe at the second inlet end of said jacket pipe, thereby to form a cooling chamber between the manifold pipe and the jacket pipe, the cooling chamber having a closed inlet end, the second inlet end of said jacket pipe being spaced from the first inlet end of said manifold pipe, such that a portion of the length of said manifold pipe adjacent the first inlet end thereof is not encompassed by said jacket pipe; and (c) an inlet pipe providing liquid communication into the cooling chamber, a closed end chamber portion of the cooling chamber being defined between said inlet pipe and a face of the cooling chamber disposed toward said first end of said manifold pipe, said inlet pipe being sufficiently close to the inlet end of the cooling chamber in combination with the closed end chamber portion being suitably configured as to maintain sufficient flow of cooling liquid at the inlet end, into and through the closed end chamber portion, to preclude development of localized hot spots on said manifold pipe adjacent the cooling chamber when cooling water is routinely passing through the cooling chamber during routine operating conditions of said pipe assembly.