Reverse flow heat exchanger for exhaust systems
AssigneeEWA Enviromental Inc. Corporation
InventorLincoln Evans-Beauchamp
Life of this patent
Estimating the term…
Abstract
An exhaust system includes a reverse flow heat exchanger having a plate separating an intake chamber and an exit chamber, each chamber having an inlet and an outlet located at opposing ends to allow flow therethrough. The plate can include a vane connected to the end of the plate in the vicinity of an inlet or an outlet. The vane is configured to reduce resistance to fluid flow near the intake chamber inlet. The exhaust system includes a heating manifold, such as a combustion chamber, configured to receive an exhaust stream from the intake chamber, further heat the exhaust stream, and return the exhaust stream to the exit chamber. Embodiments of the system can be configured to additionally perform as a catalytic converter and/or a muffler.
Claims33
An exhaust system comprising:
- a first exhaust manifold configured to receive exhaust gas;
- a reverse flow heat exchanger coupled to the first exhaust manifold, the reverse flow heat exchanger including:
- an intake chamber having an intake chamber inlet and an intake chamber outlet to allow flow therethrough, the intake chamber inlet configured to receive exhaust gas from the first exhaust manifold,
- an exit chamber having an exit chamber inlet and an exit chamber outlet to allow flow therethrough, the exit chamber inlet configured to receive heated exhaust gas from the intake chamber;
- and
- a heating manifold configured to receive exhaust gas from the intake chamber, heat the received exhaust gas, and provide the heated exhaust gas to the exit chamber inlet.
A reverse flow heat exchanger configured to receive exhaust gas from an exhaust manifold, the reverse flow heat exchanger comprising:
- a set of intake chambers, each intake chamber having an inlet and an outlet, the inlets of the intake chambers configured to receive exhaust gas from the exhaust manifold;
- a set of exit chambers, the exit chambers alternating with the intake chambers, each exit chamber having an inlet and an outlet, the inlets of the exit chambers configured to receive heated exhaust gas from the intake chambers;
- and
- a plurality of heat transfer elements separating the exit chambers and the inlet chambers, the heat transfer elements configured to transfer heat from the exit chambers to the intake chambers and heat exhaust gas in the intake chambers.
An exhaust system for removing particles from exhaust gas, the exhaust system comprising:
- an exhaust manifold and
- a reverse flow heat exchanger coupled to the exhaust manifold and including a plurality of plates separating a number of chambers, the chambers comprising a set of intake chambers alternating with a set of exit chambers, each intake chamber having an inlet and an outlet, each exit chamber having an inlet and an outlet, the inlets of the intake chambers configured to receive exhaust gas from the exhaust manifold and configured to receive exhaust gas from the exhaust manifold and the inlets of the exit configured to receive heated exhaust gas from the intake chambers, the intake chamber configured to receive heat from the exit chamber.
A method for removing particles from exhaust gas comprising:
- receiving emitted exhaust gas containing particles from an exhaust manifold;
- heating the emitted exhaust gas to an ignition temperature of the particles to produce heated exhaust gas;
- burning the particles in the heated exhaust gas;
- flowing the heated exhaust gas in thermal contact with the emitted exhaust gas;
- and
- transferring heat to the emitted exhaust gas from the heated exhaust gas.
Dependencies are inferred from the claim text.