Heating, cooling and ventilation system for a vehicle seat

1 . A ventilated seat for a vehicle, comprising:

a vehicle seat comprising at least one ventilated with a seat cushion and a trim surface; and

an absorption refrigeration system comprising:

a boiler located in thermal contact with a heat source of the vehicle

a condenser;

an evaporator located in thermal contact with the vehicle seat;

a conduit fluidity connecting each of the boiler, condenser and evaporator to each other; and

a refrigerant located in the conduit.

2 . The seat of claim 1 wherein the evaporator is located in thermal contact with the seat cushion of the ventilated component.

3 . The seat of claim 2 wherein the trim surface is air impermeable.

4 . The seat of claim 1 wherein the evaporator is located in thermal contact with a fluid transported from the evaporator to the ventilated component.

5 . The seat of claim 4 wherein the fluid is air and further comprising an air mover.

6 . The seat of claim 5 wherein the air mover is a radial fan and the evaporator and the fan are combined into an evaporator-fan component.

7 . The seat of claim 6 wherein the evaporator-fan component is located within the seat cushion of the ventilated component.

8 . The seat of claim 1 wherein the refrigerant is a composition comprising ammonia and water and the refrigeration absorption system further comprises a refluxer located between the boiler and the condenser and an absorber located between the evaporator and the boiler.

9 . The seat of claim 1 wherein the evaporator further comprises a cold accumulator.

10 . The seat of claim 1 wherein the heat source is a passive heat source.

11 . The seat of claim 10 wherein the heat source is a waste heat source.

12 . The seat of claim 11 wherein the waste heat source is a component of the engine or the exhaust system.

13 . The seat of claim 10 wherein the heat source is an environment heat source.

14 . The seat of claim 1 wherein the ventilated component is a seat component or a backrest component.

15 . A ventilated seat for a vehicle, comprising:

a vehicle seat having a ventilated component selected from a seat component and a backrest component, at least one of which provides a seat cushion, a trim surface;

an air mover; and

an absorption refrigeration system comprising:

a boiler located in thermal contact with a waste heat source of the vehicle;

a condenser located in an air stream of the vehicle;

an evaporator in contact with air to provide temperature conditioned air;

a conduit fluidity connecting each of the boiler, condenser and evaporator to each other; and

a refrigerant located in the conduit,

wherein the air mover transports the temperature conditioned air to the ventilated component.

16 . The seat of claim 15 wherein the trim surface is an air impermeable trim surface.

17 . The seat of claim 15 wherein the temperature conditioned air is blown across a seat occupant.

18 . The seat of claim 15 wherein the temperature conditioned air is combined with ambient air in a mixing region of the ventilated component.

19 . The seat of claim 18 further comprising a heating element located beneath the trim surface.

20 . A ventilated seat for a vehicle, comprising:

a vehicle seat having a ventilated component selected from a seat component and a backrest component, at least one of which provides a seat cushion, an air mover, an insert, an air permeable trim surface and a heating element located between the trim surface and the insert;

an absorption refrigeration system comprising:

a boiler located in thermal contact with a waste heat source of the vehicle;

a condenser located in an air stream of the vehicle;

an evaporator in contact with air to provide temperature conditioned air;

a conduit fluidity connecting each of the boiler, condenser and evaporator to each other; and

an ammonia and water refrigerant located in the conduit,

wherein the air mover transports the temperature conditioned air to the insert and is combined with ambient air.