System and method for distributed thermoelectric heating and cooling

• US 10,464,391 B2
• Filed: 06/09/2016
• Issued: 11/05/2019
• Est. Priority Date: 05/25/2007
• Status: Active Grant

• Current Assignee: Gentherm Incorporated
• Original Assignee: Gentherm Incorporated
• Inventors: Bell, Lon E., LaGrandeur, John
• Primary Examiner(s): Bauer, Cassey D
• Assistant Examiner(s): Oswald, Kirstin U
• Application Number:
  US15/177,878
• Publication Number:
  US 20160361968A1
• Time in Patent Office: 1,244 Days
• Field of Search: 62 32, 62 33
• CPC Class Codes: B60H 1/00271 HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
• CPC Class Codes: B60H 1/00278 for the battery arrangement of batteries B60R16/04
• CPC Class Codes: B60H 1/00285 for vehicle seats vehicle seats with heating or ventilation means independent from the HVAC system of the vehicle B60N2/56
• CPC Class Codes: B60H 1/00478 Air-conditioning devices using the Peltier effect for air-conditioning in general F24F5/0042; for refrigeration F25B21/02; electric devices exhibiting the Peltier effect H10N10/00
• CPC Class Codes: B60H 1/00492 comprising regenerative heating or cooling means, e.g. heat accumulators
• CPC Class Codes: B60H 1/00885 Controlling the flow of heating or cooling liquid, e.g. valves or pumps B60H1/00899 takes precedence; constructions of valves B60H1/00485
• CPC Class Codes: B60H 1/034 from the cooling liquid of the propulsion plant and from an electric heating device
• CPC Class Codes: B60H 2001/00942 comprising a plurality of heat exchangers, e.g. for multi zone heating or cooling
• CPC Class Codes: B60H 2001/00949 comprising additional heating/cooling sources, e.g. second evaporator
• CPC Class Codes: B60N 2/5614 by liquid
• CPC Class Codes: F25B 21/04 reversible
• CPC Class Codes: F25B 2321/0251 by a gas
• CPC Class Codes: F25B 2321/0252 by liquids or two-phase fluids
• CPC Class Codes: F25B 2400/24 Storage receiver heat

Abstract

A thermoelectric system and method provides distributed localized heating, cooling, or both heating and cooling. The thermoelectric system includes a plurality of thermoelectric assemblies. Each thermoelectric assembly comprises a plurality of thermoelectric elements, and each thermoelectric assembly is in thermal communication with a first working fluid and in thermal communication with a region corresponding to the thermoelectric assembly. Each thermoelectric assembly is selectively operable either to heat the region corresponding to the thermoelectric assembly by transferring heat from the first working fluid to the region corresponding to the thermoelectric assembly or to cool the region corresponding to the thermoelectric assembly by transferring heat from the region corresponding to the thermoelectric assembly to the first working fluid. Each thermoelectric assembly is operable independently from operation of other thermoelectric assemblies of the plurality of thermoelectric assemblies.

Claims

1. A climate control system with fluid conduits providing parallel and series fluid flow for heating or cooling, the climate control system comprising:

a fluid circuit configured to circulate a first working fluid in the fluid circuit;

a first thermoelectric device comprising a first side and a second side, the first thermoelectric device configured to transfer thermal energy between the first and second sides of the first thermoelectric device, the second side of the first thermoelectric device in thermal communication with a first region to be heated or cooled;

a first fluid conduit configured to convey the first working fluid in the first fluid conduit, the first fluid conduit in fluid communication with the fluid circuit and in thermal communication with the first side of the first thermoelectric device to provide thermal communication between the first working fluid and the first side of the first thermoelectric device;

a first flow controller in fluid communication with the fluid circuit, the first flow controller configured to selectively direct flow of the first working fluid toward the first thermoelectric device relative to the first side of the first thermoelectric device;

a second fluid conduit configured to convey the first working fluid in the second fluid conduit, the second fluid conduit in thermal communication with a second region to be heated or cooled by providing thermal communication between the first working fluid and the second region; and

a second flow controller in fluid communication with the fluid circuit, the second flow controller configured to selectively direct flow of the first working fluid toward the second region through the second fluid conduit,

wherein at least a portion of the first working fluid flows out of the fluid circuit into the first fluid conduit, toward the first thermoelectric device while an other portion of the first working fluid flows through the fluid circuit in parallel with the at least a portion of the first working fluid flowing through the first fluid conduit, and back into the fluid circuit when the climate control system is operating,

wherein, after flowing through the first fluid conduit back into the fluid circuit, at least a part of the portion of the first working fluid flows out of the fluid circuit into the second fluid conduit, toward the second region while at least a part of the other portion of the first working fluid flows through the fluid circuit in parallel with the at least a part of the portion of the first working fluid flowing through the second fluid conduit, and back into the fluid circuit when the climate control system is operating, and

wherein the second fluid conduit connects to the fluid circuit such that the second fluid conduit is in series fluid communication with the first fluid conduit while the fluid circuit is in parallel fluid communication with the first and second fluid conduits.

2. The climate control system of claim 1, wherein the first flow controller is positioned upstream of the first thermoelectric device with respect to a direction of flow of the first working fluid through the first fluid conduit.

3. The climate control system of claim 1, wherein the second flow controller is positioned upstream of the second region with respect to a direction of flow of the first working fluid through the second fluid conduit.

4. The climate control system of claim 1, wherein the first and second regions are positioned within a passenger compartment of a vehicle.

5. The climate control system of claim 4, wherein the vehicle comprises an engine and the first working fluid comprises engine coolant.

6. The climate control system of claim 5, wherein the vehicle further comprises a radiator, and wherein the engine coolant flows through the radiator, the engine, and at least one of the first or second fluid conduit.

7. The climate control system of claim 4, wherein the vehicle comprises a battery and a heat exchanger attached to the battery, the first working fluid in thermal communication with the heat exchanger.

8. The climate control system of claim 1, wherein the first and second regions are positioned within a same inner volume without walls forming partitions within the same inner volume to thermally isolate the first and second regions from each other within the same inner volume.

9. The climate control system of claim 1, wherein the first and second regions are in thermal communication with a second working fluid.

10. The climate control system of claim 9, wherein the second working fluid is different from the first working fluid.

11. The climate control system of claim 9, wherein at least one of the first working fluid or the second working fluid is a liquid.

12. The climate control system of claim 9, wherein the first working fluid is liquid and the second working fluid is gas.

13. The climate control system of claim 9, further comprising one or more fans configured to drive the second working fluid relative to at least one of the first region or the second region.

14. The climate control system of claim 1, further comprising a thermal storage reservoir in fluid communication with the fluid circuit, the thermal storage reservoir configured to receive the first working fluid to store thermal power.