System for the fuel storage and fuel delivery of cryogenic fuel
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F17C-009/04
F17C-007/02
F17C-009/02
출원번호
US-0753982
(2007-05-25)
등록번호
US-8113006
(2012-02-14)
우선권정보
DE-10 2006 025 656 (2006-06-01)
발명자
/ 주소
Rech, Torsten
Baier, Achim
Amsz, Markus
Brunner, Tobias
Hagler, Thomas
Kircher, Oliver
Fischer, Gregor
출원인 / 주소
Bayerische Motoren Werke Aktiengesellschaft
대리인 / 주소
Crowell & Moring LLP
인용정보
피인용 횟수 :
3인용 특허 :
9
초록▼
A system for cryogenic storage and delivery of fuel, particularly for supplying an internal-combustion engine driving a motor vehicle, includes at least a cryotank having an inner reservoir for receiving the cryogenic medium, which inner reservoir is held in a heat-insulated manner in an outer reser
A system for cryogenic storage and delivery of fuel, particularly for supplying an internal-combustion engine driving a motor vehicle, includes at least a cryotank having an inner reservoir for receiving the cryogenic medium, which inner reservoir is held in a heat-insulated manner in an outer reservoir, a coolable cooling shield between the inner reservoir and the outer reservoir of the cryotank, and a heat sink. As a thermal-energy storage device, the heat sink is in heat-transmitting contact with the cooling shield. A filling and removal device has at least one pipe penetrating the outer reservoir and leading into the inner reservoir. At least for the filling with or for the removal of cryogenic medium, the heat sink is in heat-transmitting contact with the pipe for the cryogenic medium, in order to reduce the entry of heat from the environment into the inner reservoir while emitting heat. The inner reservoir has a recess in which at least the heat sink and the pipe for the cryogenic medium are housed such that they are situated essentially within the circumferential contour of the inner reservoir.
대표청구항▼
1. A system for cryogenic storage and delivery of fuel supplied to a consuming device, the system comprising: a cryotank comprising at least an outer reservoir, an inner reservoir for receiving a cryogenic medium, which inner reservoir is held in a heat-insulated manner in the outer reservoir, and a
1. A system for cryogenic storage and delivery of fuel supplied to a consuming device, the system comprising: a cryotank comprising at least an outer reservoir, an inner reservoir for receiving a cryogenic medium, which inner reservoir is held in a heat-insulated manner in the outer reservoir, and a coolable cooling shield between the inner reservoir and the outer reservoir of the cryotank;a heat sink which, as a thermal-energy storage device, is in heat-transmitting direct contact with the cooling shield; anda filling and removal device having at least one pipe penetrating the outer reservoir and leading into the inner reservoir, at least for the filling with or for the removal of cryogenic medium, the heat sink being in heat-transmitting contact with the at least one pipe for the cryogenic medium so as to reduce entry of heat from the environment into the inner reservoir while emitting heat;wherein the inner reservoir has a recess in which at least the heat sink and the at least one pipe for the cryogenic medium are housed, such that the heat sink and the at least one pipe for the cryogenic medium are situated essentially entirely within a circumferential contour of the inner reservoir;wherein the recess extends between two edges of the inner reservoir;wherein no portion of the heat sink extends beyond the cooling shield from within the recess of the inner reservoir; andwherein for evacuating and filling the cryotank, at least three pipes are provided, which extend from the inner reservoir through the recess in the inner reservoir out of the outer reservoir, the first pipe being provided for removal of cryogenic medium predominantly in a liquid state (LH2) from a lower area of the cryotank, the second pipe being provided for removal of cryogenic medium predominantly in a gaseous state (GH2) from an upper area of the cryotank, and the third pipe being provided for return of the medium as hot gas into the upper area of the cryotank. 2. The system according to claim 1, wherein the heat sink is in heat-transmitting contact exclusively with the second pipe. 3. The system according to claim 1, wherein the heat sink has one or more continuous cavities to whose inlet and outlet the second pipe is sealingly connected. 4. The system according to claim 1, wherein the recess in the inner reservoir is a blending of the inner reservoir with a cylinder. 5. The system according to claim 4, wherein all pipes leading into the inner reservoir extend through its blending surface with the recess. 6. The system according to claim 1, wherein at one end, the heat sink projects beyond the circumferential contour of the inner reservoir to an extent that such a heat-transmitting connection with the cooling shield is formed. 7. The system according to claim 1, wherein at one end, the heat sink is connected in a heat-transmitting manner by at least one of screws and rivets with the cooling shield. 8. The system according to claim 1, further comprising another cooling shield that surrounds pipes situated within the recess and that is connected with the heat sink. 9. The system according to claim 1, wherein the at least three pipes extend from the inner reservoir through the recess in the inner reservoir out of the outer reservoir into an accessory container. 10. The system according to claim 9, wherein the accessory container, which is at least one of vacuum-insulated and evacuated, contains cold accessories for filling and evacuating the cryotank. 11. The system according to claim 9, wherein a container wall of the accessory container on an interior side is equipped with a heat insulation layer. 12. The system according to claim 9, wherein the accessory container is connected by way of at least one separable coupling device with the cryotank, the coupling device establishing tight connections between the pipes extending out of the cryotank and out of the accessory container. 13. The system according to claim 12, wherein the coupling device comprises a cryotank-side coupling part and an instrument-container-side coupling part, the cryotank-side coupling part being mounted on the outer reservoir. 14. The system according to claim 13, wherein the accessory container has at least one other connection point for at least one of filling the cryotank and supplying the consuming device, which other connection point, by way of at least one additional releasable coupling device having at least one connection part, establishes tight connections between pipes leading out of the accessory container and the connection part. 15. The system according to claim 9, further comprising a delivery device at least for removal of the liquid cryogenic medium from the cryotank, the delivery device being housed in the accessory container. 16. The system according to claim 15, wherein the delivery device is cooled by an additional heat exchanger. 17. The system according to claim 15, wherein the delivery device is a feed pump which has a low heat capacity. 18. The system according to claim 14, wherein the at least one connection part is a heat exchanger connected between the accessory container and the consuming device. 19. The system according to claim 18, further comprising a pressure reservoir for the gaseous cryogenic medium (GH2), which is connected in the consuming device direction behind the heat exchanger between the accessory container and the consuming device such that the consuming device as well as the cryotank are supplyable with pressurized gaseous cryogenic medium (GH2) from the pressure reservoir. 20. The system according to claim 16, wherein the second pipe is connected to the additional heat exchanger in order to cool the delivery device. 21. The system according to claim 16, wherein the first and the second pipe are joined in the consuming device direction behind the delivery device or behind the additional heat exchanger. 22. The system according to claim 16, wherein the first pipe and/or the second pipe or a junction of the first and the second pipe, in the consuming device direction behind the delivery device or behind the additional heat exchanger, are in a heat transmitting contact with the heat exchanger. 23. The system according to claim 1, wherein the third pipe for filling the cryotank is connected by way of a filling pipe with a fueling coupling. 24. The system according to claim 23, wherein a connection pipe is arranged between the filling pipe and a return gas pipe, said connection pipe connecting the filling pipe with the return gas pipe when the fueling coupling is not used for fueling. 25. The system according to claim 1, wherein the third pipe is equipped with a diffuser on one end in the cryotank. 26. The system according to claim 16, wherein in the consuming device direction behind the additional heat exchanger and in front of a junction with the first pipe, the second pipe has a branch-off pipe into a fueling coupling which, during a fueling, as a return gas pipe, leads gaseous cryogenic medium (GH2) displaced from the cryotank as a result of its filling to the fueling coupling. 27. The system according to claim 16, wherein in the direction of the consuming device behind the additional heat exchanger, a branch-off pipe to a pressure relief valve is connected to the second pipe, which pressure relief valve opens when a boil-off limit pressure has been reached, for blowing the gaseous medium (GH2) off out of the cryotank. 28. The system according to claim 27, wherein a branch-off pipe to a first excess pressure safety valve is connected to the second pipe in the consuming device direction in front of the additional heat exchanger, which excess pressure safety valve opens when a limit pressure above the boil-off pressure has been reached, for blowing off gaseous medium (GH2) out of the cryotank. 29. The system according to claim 28, wherein a branch-off pipe to a second excess pressure safety valve is connected to the first pipe in the consuming device direction in front of the delivery device, which excess pressure safety valve opens when a limit pressure above the boil-off pressure has been reached, for blowing off cryogenic medium (GH2, LH2) out of the cryotank. 30. The system according to claim 1, wherein the first pipe is linked to a change-over device which causes a removal of liquid hydrogen (LH2) until the cryotank is largely evacuated. 31. The system according to claim 15, wherein the accessory container is placed such that the delivery device is below or at the same level as pipe openings for the liquid removal in the lower area of the cryotank. 32. The system according to claim 1, wherein the consuming device is an engine for driving a motor vehicle. 33. The system according to claim 1, wherein the recess is situated essentially entirely within the circumferential contour of the inner reservoir.
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