System and Method for Storage of Cryogenic Material

Abstract

The present invention is a system and method of storing various quantities of cryogenic material with lower cost than systems found in prior art. Novel feature of the system is the ability to use minimum amounts of different types of energy to maintain various quantities of cryogenic material. An additional novel feature is the use of common components and materials.

Claims

1. A cryogenic material storage system comprising: a. a primary cryogenic material source; b. a secondary cryogenic material source; c. a primary vessel 24 with an insulating layer 26 connected to the primary cryogenic material source and a secondary vessel 30 connected to the secondary cryogenic material source within the primary vessel 24 with an input port 38; d. an externally powered motor 12 connected to a vacuum pump 14 with an exit port 44; e. an externally powered motor 12 connected to a blower 16 with an input port 46; f. a heat exchanger 18 that allows materials to transfer thermal energy; g. a pump 34 with input port 36 to transfer material from the primary vessel 24 into secondary vessel 30; h. an input port 40; i. an exit port 42; j. a connection 20 between the exchanger 18 and exit port 42; k. a connection 22 between the exchanger 18 and input port 40.

2. A method of cryogenic material storage, comprising the following steps: a. selecting a system that includes: a primary cryogenic material source; a secondary cryogenic material source; a primary vessel 24 with an insulating layer 26 connected to the primary cryogenic material source and a secondary vessel 30 connected to the secondary cryogenic material source within the primary vessel 24 with an input port 38; an externally powered motor 12 connected to a vacuum pump 14 with an exit port 44; an externally powered motor 12 connected to a blower 16 with an input port 46; a heat exchanger 18 that allows materials to transfer thermal energy; a pump 34 with input port 36 to transfer material from the primary vessel 24 into secondary vessel 30; an input port 40; an exit port 42; a connection 20 between the exchanger 18 and exit port 42; a connection 22 between the exchanger 18 and input port 40. b. the insulating layer 26 slows the transfer of thermal energy from the ambient; c. the secondary cryogenic material changes into the gaseous state via the vacuum pump 14; d. the primary cryogenic material transfers thermal energy to the secondary cryogenic material extending the ability to remain in a liquid state; e. the now gaseous material 20 flows through the heat exchanger 18 transferring any remaining thermal energy to the gaseous material 22 that enters the blower 16 via the input port 46; f. as the gaseous material enters the input port 40 of the primary vessel 24, the material joins the existing primary cryogenic material; g. a pump 34 with an input port 36 transfers cryogenic material into the secondary vessel 30 as needed; h. the energy to power the blower 16 vacuum 14 and pump 34 has been transferred into thermal energy.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0008] FIG. 1 is a perspective view of the main components of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0009] Referring to the FIGURES provided by way of exemplification and not limitation, a system having preferred features of the present invention is described. As seen in the FIGURE, components of the present invention may have features of other cryogenic storage systems, but has differences that provide novel and useful features for the cost effective method of storing cryogenic material.

[0010] Referring now to the invention in FIG. 1 there is shown a system 10 that contains a primary vessel 24 with an insulating layer 26 to slow the transfer of thermal energy from the surroundings into the primary cryogenic material 28, which can be any substance that is capable of existing in the cryogenic state, such as atmospheric air. Within the primary vessel 24 is a secondary vessel 30 that contains a secondary cryogenic material 32, which can be the same or different that the primary cryogenic material 28 contained in the primary vessel 24. There is a cryogenic inlet port 38 to inject secondary cryogenic material 32 from an external source into the secondary vessel 30. The primary cryogenic material 28 within the primary vessel 24 may be transferred into the secondary vessel 30 by the pump 34 that is connected to the secondary vessel 30 and the pump inlet 36 located within the primary vessel 24. The pressure level inside the secondary vessel 30 is below atmospheric pressure causing the secondary cryogenic material 32 to change into the gaseous state and flow out of the secondary vessel 30 via the exit port 42. The gaseous material 20 flows through a heat exchanger 18 towards a vacuum pump 14, which lowers the pressure inside the secondary vessel 30. A motor 12 powers the vacuum pump 14. The gaseous material 20 leaves via the vacuum exit 44 and can be recycled as part of a closed cycle or released as part of an open cycle. A motor 12 powers the blower 16 that is connected to the heat exchanger 18. A secondary material in the gaseous state 22 enters the blower inlet 46. The gaseous material 20 and secondary gaseous material 22 flow in opposite directions within the heat exchanger 18, transferring the thermal energy from the secondary gaseous material 22 to the gaseous material 20. As the secondary gaseous material 20 flows through the primary vessel entrance 40, the temperature level is similar to the gaseous material 20 as it flows through the exit port 42. As the secondary cryogenic material 32 within the secondary vessel 30 changes into the gaseous state, the secondary vessel 30 absorbs thermal energy from the primary cryogenic material 28 within the primary vessel 24. This prevents the primary cryogenic material 28 from changing into the gaseous state while also allowing the secondary gaseous material 22 to condense within the primary vessel 24, thus providing additional primary cryogenic material 28. The blower 16 and vacuum 14 maintains a difference in pressure between the primary vessel 24 and secondary vessel 30 that maintains the transfer of thermal energy between the primary cryogenic material 28 and the secondary cryogenic material 32. The energy that powers the motor 12 and pump 34 is converted into thermal energy by the change of state in the secondary cryogenic material 32 and secondary gaseous material 22.

[0011] In further detail, still referring to the invention of FIG. 1, the dimensions of the vessel 24 and heat exchanger 18 can vary depending on the system 10 requirement and surrounding environment. The ratio of the flow rates of the gaseous material 20 and secondary gaseous material 22 may change depending on the system 10 requirement and surrounding environment. The dimensions of the secondary vessel 30 may vary depending on the system 10 requirements and surrounding environment. The size and capacity of the vacuum pump 14 and blower 16 may vary depending on the system 10 requirements and surrounding environment.

[0012] The construction details of the invention as shown in FIG. 1 are that the vessel 24 secondary vessel 30 and heat exchanger 18 may be made of any material sufficiently rigid and strong enough to handle the forces of the gaseous material 20 secondary gaseous material 22 primary cryogenic material 28 and secondary cryogenic material 32.

[0013] The system 10 shown in FIG. 1 shows a single stage and multiple stages can be combined to form a system 10.

[0014] In broad embodiment, the present invention is a system and method of storing large quantities of cryogenic material with lower cost than systems found in prior art. Novel feature of the system is the ability to use minimum amounts of electricity to maintain large quantities of cryogenic material. An additional novel feature is the use of common components and materials.

[0015] Modifications of the structure, arrangement, proportions, elements, materials, and components used in the practice of the present invention, and otherwise, some of which are adapted to specific environments and operative requirements, can be made without departing from the principles of the present invention. Various types of electrical controls may be required, which have not been shown or discussed. Various types of valves may be required, which have not been shown or discussed.

[0016] While the foregoing written description of the invention enables one of ordinary skill to make and use what is considered the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples. The invention should therefore not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention as claimed.

[0017] The present invention may be carried out in other specific ways than those set forth without departing from the essential characteristics of the invention. The present embodiment are, therefore, to be illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are embraced.

[0018] It should be understood that other materials will be the mechanical equivalent of liquefied atmospheric air in the system described and claimed. It should be understood that other gases will be the mechanical equivalent of atmospheric air in the system described and claimed.