Cooling system with two heat exchangers and vehicle with a cooling system

Patent metadata

Field	Value
Publication number	US-2019383568-A1
Application number	US-201916439085-A
Country	US
Kind code	A1
Filing date	Jun 12, 2019
Priority date	Jun 15, 2018
Publication date	Dec 19, 2019
Grant date	—

Abstract

A cooling system with icing protection for a coolant flowing therein comprises a first heat exchanger to withdraw coolant thermal energy. The first heat exchanger uses a first fluid flow as a heat sink. A second heat exchanger withdraws thermal energy from the coolant using a second fluid flow, differing from the first fluid flow, as a heat sink. A conveyor device supplies the coolant to the first and second heat exchangers. The cooling system comprises a valve to regulate a volumetric flow of the coolant supplied to the second heat exchanger, a temperature sensor configured to measure a temperature of the coolant downstream of the first and/or second heat exchanger, and a control unit to control a delivery rate of the conveyor device and/or the volumetric flow such that the temperature measured by the temperature sensor does not fall below a predetermined coolant viscosity.

First claim

1 . A cooling system with icing protection for a coolant flowing in the cooling system, comprising:
a first heat exchanger configured to withdraw thermal energy from the coolant, wherein the first heat exchanger uses a first fluid flow as a heat sink; a second heat exchanger configured to withdraw thermal energy from the coolant, wherein the second heat exchanger uses a second fluid flow, which differs from the first fluid flow, as a heat sink; a conveyor device, configured to supply the coolant to the first heat exchanger and to the second heat exchanger, a valve configured to regulate a volumetric flow of the coolant supplied to the second heat exchanger; at least one temperature sensor configured to measure a temperature of the coolant downstream of at least one of the first heat exchanger or of the second heat exchanger; and a controller configured to control at least one of a delivery rate of the conveyor device or the volumetric flow regulated by the valve in such a manner that the temperature measured by the temperature sensor does not fall below a threshold value which corresponds to a predetermined viscosity of the coolant.

2 . The cooling system according to claim 1 , furthermore comprising:
a first coolant line configured to conduct coolant heated by a heat source to the first heat exchanger; and
a second coolant line which branches off from the first coolant line and is configured to at least partially conduct the coolant heated by the heat source to the second heat exchanger,
wherein the valve is arranged in the second coolant line and is configured to regulate the volumetric flow of the coolant flowing through the second coolant line.

3 . The cooling system according to claim 1 , furthermore comprising:
a first coolant line configured to conduct coolant heated by a heat source to the first heat exchanger; a third coolant line configured to conduct coolant cooled by the first heat exchanger to the second heat exchanger; and a fourth coolant line, which branches off from the third coolant line and is configured to guide coolant past the second heat exchanger, wherein the valve is arranged in the fourth coolant line and is configured to regulate the volumetric flow of the coolant flowing through the fourth coolant line such that the volumetric flow of the coolant supplied to the second heat exchanger is regulated.

4 . The cooling system according to claim 2 , wherein the at least one temperature sensor comprises:
a temperature sensor configured to measure a temperature of the coolant directly upstream of the conveyor device; a temperature sensor configured to measure a temperature of the coolant directly downstream of the first heat exchanger; a temperature sensor configured to measure a temperature of the coolant directly downstream of the second heat exchanger; a temperature sensor configured to measure a temperature of the coolant directly upstream of the heat source; a temperature sensor configured to measure a temperature of the coolant directly downstream of the heat source; a temperature sensor configured to measure a temperature of the first fluid flow directly upstream of the first heat exchanger; and a temperature sensor configured to measure a temperature of the second fluid flow directly upstream of the second heat exchanger, wherein the controller is configured to receive corresponding signals from each of the temperature sensors, said signals representing the temperature measured by the respective temperature sensor.

5 . The cooling system according to claim 1 , furthermore comprising:
a fluid line configured to branch off at least part of the first fluid flow downstream of the first heat exchanger and to supply same to the second fluid flow upstream of the second heat exchanger; and a control apparatus configured to regulate a volumetric flow of the first fluid flow branched off through the fluid line.

6 . A cooling system according to claim 1 , wherein at least one of the first heat exchanger or the second heat exchanger is a matrix heat exchanger.

7 . A cooling system according to claim 1 , wherein at least one of the first heat exchanger or the second heat exchanger is a skin heat exchanger.

8 . A cooling system according to claim 1 , wherein at least one of the first heat exchanger or the second heat exchanger is a combination of a matrix heat exchanger and a skin heat exchanger.

9 . A vehicle with a cooling system according to claim 1 .

10 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is a passenger cabin.

11 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is a cargo hold.

12 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is a cockpit.

13 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is an avionics component.

14 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is a hydraulic component.

15 . The vehicle according to claim 9 , wherein a heat source cooled by the cooling system is an electronic component.

Assignees

• Airbus Defence & Space Gmbh

Inventors

• Schoell Robert

Classifications

• F28F19/006 Primary

  Preventing deposits of ice · CPC title

• F28F27/00

  Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus (control arrangements in general G05) · CPC title

• B64D2013/0674

  comprising liquid subsystems · CPC title

• B64D13/06 Primary

  the air being conditioned (pressurising B64D13/02) · CPC title

• Y02T50/50

  On board measures aiming to increase energy efficiency · CPC title