Device for recovering energy from exhaust air

Patent metadata

Field	Value
Publication number	US-10596586-B2
Application number	US-201715463076-A
Country	US
Kind code	B2
Filing date	Mar 20, 2017
Priority date	Mar 18, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

There is provided an energy recovery device for recovering energy from exhaust air which flows through a discharge line. The energy recovery device includes a heat exchanger device having at least a first heat exchanger unit and a heat pump, wherein the heat pump is connected at the high-temperature side thereof to the first heat exchanger unit and is arranged at the low-temperature side thereof in the exhaust air flow in the exhaust air flow direction downstream of the first heat exchanger unit or is connected at the low-temperature side thereof to a second heat exchanger unit which is connected downstream of the first heat exchanger unit in the exhaust air flow direction.

First claim

What is claimed is:

1. An energy recovery device for recovering energy from exhaust air which flows through a discharge line, the device comprising:
a heat exchanger device including a first heat exchanger unit, a second heat exchanger unit, and a heat pump, wherein:
the first heat exchanger unit and the second heat exchanger unit are arranged along an exhaust air flow direction of the discharge line with the second heat exchanger unit being downstream of the first heat exchanger unit, such that the exhaust air flows from the discharge line through the first heat exchanger unit and the second heat exchanger unit and exists from an outlet of the second heat exchanger unit.
a high-temperature side of the heat pump is connected to the first heat exchanger unit and the heat pump is arranged at a low-temperature side of the exhaust air flow direction downstream of the first heat exchanger unit; and
a low-temperature side of the heat pump is connected to the second heat exchanger unit, a first portion of heat being removed from the exhaust air in the first heat exchanger to the high-temperature side of the heat pump, a second portion of heat being removed from the exhaust air in the second heat exchanger to the low-temperature side of the heat pump.

2. The energy recovery device according to claim 1 , wherein a water circuit connects the first heat exchanger unit of the heat exchanger device to a condenser of the heat pump of the heat exchanger device.

3. The energy recovery device according to claim 2 , wherein the water circuit connects the first heat exchanger unit of the heat exchanger device to at least a first air discharge device.

4. The energy recovery device as claimed in claim 3 , wherein a heat exchanger connected to a thermal energy supply system is operatively connected with the at least first air discharge device.

5. The energy recovery device according to claim 1 , wherein the heat exchanger device comprises a secondary water circuit which connects the second heat exchanger unit to an evaporator of the heat pump.

6. The energy recovery device according to claim 1 , wherein the first heat exchanger unit of the heat exchanger device is a recuperator.

7. The energy recovery device according to claim 1 further comprising a dryer exhaust air line for hot exhaust air of at least one dryer unit.

8. The energy recovery device according to claim 7 , wherein the dryer exhaust air line of the at least one dryer unit opens in the discharge line.

9. The energy recovery device according to claim 7 , wherein a heat exchanger is arranged in the dryer exhaust air line of the at least one dryer unit.

10. The energy recovery device according to claim 9 , wherein a return line of at least one plate heat exchanger is connected to the heat exchanger.

11. A painting installation having an energy recovery device according to claim 1 .

12. The energy recovery device according to claim 1 , wherein the heat pump includes a condenser that is connected to the first heat exchanger unit and an evaporator that is connected to the second heat exchanger unit.

13. A system comprising:
the energy recovery device according to claim 1 ;
a water circuit;
a first air discharge device; and
a second air discharge device, wherein the water circuit is configured to connect an input of the first heat exchanger unit to the first and second air discharge devices and connect an output of the first heat exchanger unit to a condenser of the heat pump.

14. An energy recovery device for recovering energy from exhaust air that flows through a discharge line, the device comprising:
a heat exchanger device including a first heat exchanger unit, a second heat exchanger unit, and a heat pump, wherein:
the first heat exchanger unit and the second heat exchanger unit are arranged along an exhaust air flow direction of the discharge line with the second heat exchanger unit being downstream of the first heat exchanger unit, the first heat exchanger unit having an exhaust air inlet connected to the discharge line and an exhaust air outlet connected to the second heat exchanger unit,
the first heat exchanger unit is configured to receive fluid from a first air discharge device and a second air discharge device,
the heat pump is arranged at a low-temperature side of the exhaust air flow downstream of the first heat exchanger unit, and a high-temperature side of the heat pump is connected to the first heat exchanger unit; and
a low-temperature side of the heat pump is connected to the second heat exchanger unit, a first portion of heat being removed from the exhaust air in the first heat exchanger unit to the high-temperature side of the heat pump, a second portion of heat being removed from the exhaust air in the second heat exchanger to the low-temperature side of the heat pump.

15. The energy recovery device according to claim 14 , wherein the heat pump includes a condenser that is connected to the first heat exchanger unit and an evaporator that is connected to the second heat exchanger unit.

16. The energy recovery device according to claim 14 , wherein:
the first heat exchanger unit is connected to the first air discharge device, the second air discharge device, and the heat pump by way of a first water circuit, and
the second heat exchanger is connected to the heat pump by way of a second water circuit separate from the first water circuit.

17. An energy recovery device for recovering energy from exhaust air comprising:
a heat exchanger device including:
a first and second heat exchanger units arranged along an exhaust air flow direction of a discharge line with the second heat exchanger unit being downstream of the first heat exchanger unit, the exhaust air flowing from the first heat exchanger unit to the second heat exchanger unit and exiting from an outlet of the second heat exchanger unit, and
a heat pump connected to an output of the first heat exchanger unit and to an input and an output of the second heat exchanger unit, a first portion of heat being removed from the exhaust air in the first heat exchanger unit to the high-temperature side of the heat pump, a second portion of heat being removed from the exhaust air in the second heat exchanger unit to a low-temperature side of the heat pump.

18. The energy recovery device according to claim 17 , wherein the heat pump includes a condenser that is connected to the first heat exchanger unit and an evaporator that is connected to the second heat exchanger unit.

19. The energy recovery device according to claim 17 , wherein a high-temperature side of the heat pump is connected to the first heat exchanger unit, and the low-temperature side of the heat pump is connected to the second heat exchanger unit.

20. The energy recovery device according to claim 17 , wherein:
the first heat exchanger unit is configured to receive fluid from a first air discharge device and a second air discharge device by way of a first water circuit, and
the second heat exchanger is connected to the heat pump by way of a second water circuit separate from the first water circuit.

Assignees

• Ford Global Tech Llc

Inventors

• Rick Manfred

Classifications

• B05B16/60 Primary

  Ventilation arrangements specially adapted therefor · CPC title

• F25B30/06

  characterised by the source of low potential heat · CPC title

• B05C11/00 Primary

  Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00 (means for manipulating or holding work B05C13/00; enclosures for apparatus, booths B05C15/00; spray booths B05B16/00) · CPC title

• F25B30/02

  of the compression type · CPC title