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US 10,309,364 B2Granted
Exhaust heat regenerator for vehicle
AssigneeHanon Systems
InventorsJung Sam Gu, Hyun Kun Shin, Kwang Hun Oh, Young Ha Jeon
Life of this patent
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Abstract
Disclosed herein is an exhaust heat recovery apparatus for a vehicle, in which a heat accumulator has improved heat accumulation performance and heat exchange performance, whereby an engine can be rapidly warmed up in a cold start so that fuel efficiency can be enhanced, a pollutant emission rate can be reduced, and it is possible to heat a passenger compartment immediately after the engine starts.
Claims20
An exhaust heat regenerator for a vehicle, comprising:
- a coolant discharge pipe coupled at a first end thereof to an exhaust-heat-recovery heat exchanger and at a second end thereof to a passenger compartment heater;
- a coolant bypass pipe coupled at a first end thereof to a portion of the coolant discharge pipe that is adjacent to the exhaust-heat-recovery heat exchanger and at a second end thereof to a portion of the coolant discharge pipe that is adjacent to the passenger compartment heater;
- a flow path control valve installed on the first or second end of the coolant bypass pipe and configured to control a flow path of coolant;
- a heat accumulator installed on the coolant bypass pipe;
- a first coolant temperature sensor installed on the coolant discharge pipe and measuring a temperature of the coolant discharged from the exhaust-heat-recovery heat exchanger;
- a second coolant temperature sensor installed on the coolant bypass pipe and measuring a temperature of the coolant discharged from the heat accumulator;
- and
- an electronic control unit controlling operation of the flow path control valve using measured values of the first and second coolant temperature sensors;
- wherein the first coolant temperature sensor is installed on a rear end of the exhaust-heat-recovery heat exchanger and upstream of the flow path control valve;
- wherein the electronic control unit controls the flow path control valve for controlling the coolant passing through the heat accumulator.
7 more elements
An exhaust heat regenerator for a vehicle, comprising:
- a coolant discharge pipe coupled at a first end thereof to an exhaust-heat-recovery heat exchanger and at a second end thereof to a passenger compartment heater;
- a coolant bypass pipe coupled at a first end thereof to a portion of the coolant discharge pipe that is adjacent to the exhaust-heat-recovery heat exchanger and at a second end thereof to a portion of the coolant discharge pipe that is adjacent to the passenger compartment heater;
- a flow path control valve installed on the first or second end of the coolant bypass pipe and configured to control a flow path of coolant;
- a heat accumulator installed on the coolant bypass pipe;
- wherein the heat accumulator comprises:
- a heat exchanger via which the coolant passes;
- an inner casing in which the heat exchanger is housed;
- a heat storage material charged between the heat exchanger and the inner casing;
- an outer casing housing the inner casing therein;
- and
- an insulation space formed between the inner casing and the outer casing;
- wherein the heat exchanger comprises a plurality of planar tubes stacked to communicate with each other, each of the planar tubes comprising an upper plate and a lower plate wherein a connection part including an inlet port and an outlet port protrudes from each of the upper and lower plates and of the planar tubes;
- and
- wherein upper and lower ones of the planar tubes are stacked in such a way that the connection parts are connected to each other wherein a baffle is formed on each of the planar tubes, the baffle blocking a space between the inlet port and the outlet port.
11 more elements
Dependencies are inferred from the claim text.