Apparatus of thermoelectric effect for current generation in internal combustion engine vehicles and the like, with recovery of the externally dissipated heat

• US 4,753,682 A
• Filed: 08/25/1986
• Issued: 06/28/1988
• Est. Priority Date: 09/03/1985
• Status: Expired due to Fees

• Current Assignee: ITAL IDEE SRL
• Original Assignee: ITAL IDEE SRL
• Inventors: Cantoni, Angelo
• Primary Examiner(s): Kyle, Deborah L.
• Assistant Examiner(s): Steinberger, Brian S.
• Application Number:
  US06/899,715
• Time in Patent Office: 673 Days
• Field of Search: 136/203, 136/204, 136/208, 136/209, 136/210, 136/212, 165/41, 165/42, 165/43, 165/52, 320/61, 322/2 R
• US Class Current: 136/212
• CPC Class Codes: F25B 21/02 using Peltier effect; using Nernst-Ettinghausen effect
• CPC Class Codes: H10N 10/13 characterised by the heat-exchanging means at the junction

Abstract

The apparatus of thermoelectric effect for current generation in internal combustion engine vehicles and the like, with recovery of the externally dissipated heat, according to the present invention, comprises a thermoelectric generator provided with several Peltier effect elements undergoing heat transfer with a high-temperature fluid originating from the engine and with a cooling fluid, and possessing electrical conductors connected to their ends across which a thermoelectric e.m.f. is generated, said conductors being connected to an electrical user circuit.

Claims

1. An apparatus of thermoelectric effect for current generation in internal combustion engine vehicles with recovery of externally dissipated heat, said apparatus comprising:

vehicle means having an internal combustion engine including an engine cooling liquid circuit, an engine cooling jacket and a radiator, said engine cooling liquid circuit for conveying a cooling liquid from said engine cooling jacket to said radiator;

thermoelectric generator, connected to said cooling circuit, having a plurality of bimetallic Peltier effect elements;

each of said plurality of bimetallic Peltier effect elements having a first surface in heat transfer contact with a high temperature fluid originating from said internal combustion engine and a second surface in heat transfer contact with said cooling liquid;

electrical conductor means connected to said plurality of bimetallic Peltier effect elements such that a thermoelectric effect between said first and second surfaces generates an e.m.f. across said electrical conductor means for producing an electric current in said thermoelectric generator; and

electrical user circuit connected to said electrical conductor means for receiving said electric current produced in said thermoelectric generator and providing said electric current to said apparatus for charging a battery means and a air cooling means.

2. An apparatus according to claim 1 wherein said thermoelectric generator further comprises a metal heat exchanger element means including internal ducts with connectors for connecting said metal heat exchanger between the engine cooling liquid circuit and the radiator, and said internal ducts having a wall in contact with one surface of said plurality of bimetallic Peltier effect elements which are electrically connected together, said other surface of said plurality of Peltier effect element being in contact with said metal heat exchanger element means which are arranged for heat transfer against ambient air.

3. An apparatus according to claim 1, wherein said thermoelectric generator comprises a heat exchanger chamber having one or more bimetallic Peltier effect elements disposed on the walls of said chamber connected to a discharge duct of said engine, said chamber having a thermostat to maintain the temperature in said chamber at a substantially constant value.

4. An apparatus according to claim 1 wherein said air cooling means provides cooling of engine feed air, such that engine efficiency increases.

5. An apparatus according to claim 1, wherein said air cooling means provides cooling of the air for air conditioning of the vehicle.

6. An apparatus according to claim 4 or 5, wherein said air cooling apparatus further comprising a duct within which air to be cooled flows, and on the walls of said duct are said plurality of bimetallic Peltier effect elements having one of said surfaces in heat transfer contact with air flowing within the duct and said other surface in heat transfer contact with air flowing external to the duct, and said external air being conveyed within an external duct coaxial to said duct, said plurality of bimetallic Peltier effect elements being electrically connected together and fed by said electric current produced by the thermoelectric generator, in such a manner as to cause cooling of said surface facing the interior of the duct through which the air to be cooled flows, and to cause heating of said other surface facing outwards from said duct.

7. An apparatus according to claim 4 or 5 wherein said air cooling means comprises a duct within which air to be cooled flows and said radiator which is traversed by a thermal carrier fluid originating from a circuit which connects the radiator to a heat exchanger, and said duct having disposed on its walls said plurality of several bimetallic Peltier effect elements each having one of said surfaces in heat transfer contact with the thermal carrier fluid circulating through the heat exchanger and said other surface in heat transfer contact with air flowing external to said heat exchanger, and said external air being conveyed within a duct enclosing the heat exchanger, the bimetallic Peltier effect elements which are electrically connected together and fed by said electric current produced by the thermoelectric generator, in such a manner as to cause cooling of said one surface facing the interior of the heat exchanger and to cause heating of said other surface facing outwards from said heat exchanger.