公开(公告)号：US20240102751A1

公开(公告)日：2024-03-28

申请号：US18531562

申请日：2023-12-06

Applicant: Purdue Research Foundation

Inventor： William Travis Horton ,  Andres Arrieta Diaz ,  James Edward Braun

IPC: F28F17/00

CPC classification number: F28F17/00 ,  F28F19/006

Abstract: A shape-morphing fin includes a fixed portion, a multistable portion, a coupling portion, and a vibration source. The multistable portion functions as a negative stiffness element. The multistable portion is selectively movable between a first position and a second position. The movement between first position and the second position is configured to remove the ice formation from the structure. The coupling portion couples the fixed portion to the multistable portion. The vibration source is configured to produce a resonant vibration to engage the movement of the multistable portion from the first position to the second position.

公开(公告)号：US20220026121A1

公开(公告)日：2022-01-27

申请号：US17383177

申请日：2021-07-22

Applicant: Purdue Research Foundation

Inventor： James Edward Braun ,  Eckhard Achim Groll ,  William Travis Horton ,  Orkan Kurtulus ,  Vatsal Shah

IPC: F25B31/00 ,  G01F23/00 ,  G01K3/00

Abstract: A system for measuring oil circulation ratio in a vapor-compression refrigeration system (VCRS) is provided. The system may include an oil separator configured to receive the refrigerant and oil flow from the low-pressure line of the VCRS and output a oil flow and a refrigerant flow. The system may further include an oil collector configured to receive the separated oil flow provided by the oil separator. A valve may control an oil flow from the oil collector to the low-pressure line. A level sensor may measure oil level in the oil collector. The system may close, in response to the oil being at or less than a first level, the valve to collect oil in the oil collector. The system may open, in response to the oil being at or greater than a second level, the valve to release oil from the oil collector to the low-pressure line.

公开(公告)号：US11874074B2

公开(公告)日：2024-01-16

申请号：US17855965

申请日：2022-07-01

Applicant: Purdue Research Foundation

Inventor： William Travis Horton ,  Andres Arrieta Diaz ,  James Edward Braun

IPC: F28F17/00 ,  F28F19/00 ,  F28F3/02

CPC classification number: F28F17/00 ,  F28F3/02 ,  F28F19/006 ,  F28F2215/08 ,  F28F2215/14

Abstract: A shape-morphing fin includes a fixed portion, a multistable portion, a coupling portion, and a vibration source. The multistable portion functions as a negative stiffness element. The multistable portion is selectively movable between a first position and a second position. The movement between first position and the second position is configured to remove the ice formation from the structure. The coupling portion couples the fixed portion to the multistable portion. The vibration source is configured to produce a resonant vibration to engage the movement of the multistable portion from the first position to the second position.

公开(公告)号：US11821663B2

公开(公告)日：2023-11-21

申请号：US17383177

申请日：2021-07-22

Applicant: Purdue Research Foundation

Inventor： James Edward Braun ,  Eckhard Achim Groll ,  William Travis Horton ,  Orkan Kurtulus ,  Vatsal Shah

IPC: F25B3/00 ,  G01K3/00 ,  G01F23/00 ,  F25B31/00

CPC classification number: F25B31/004 ,  G01F23/0007 ,  G01K3/005

Abstract: A system for measuring oil circulation ratio in a vapor-compression refrigeration system (VCRS) is provided. The system may include an oil separator configured to receive the refrigerant and oil flow from the low-pressure line of the VCRS and output a oil flow and a refrigerant flow. The system may further include an oil collector configured to receive the separated oil flow provided by the oil separator. A valve may control an oil flow from the oil collector to the low-pressure line. A level sensor may measure oil level in the oil collector. The system may close, in response to the oil being at or less than a first level, the valve to collect oil in the oil collector. The system may open, in response to the oil being at or greater than a second level, the valve to release oil from the oil collector to the low-pressure line.

公开(公告)号：US20230015420A1

公开(公告)日：2023-01-19

申请号：US17855965

申请日：2022-07-01

Applicant: Purdue Research Foundation

Inventor： William Travis Horton ,  Andres Arrieta Diaz ,  James Edward Braun

IPC: F28F19/00 ,  F28F3/02

Abstract: A shape-morphing fin includes a fixed portion, a multistable portion, a coupling portion, and a vibration source. The multistable portion functions as a negative stiffness element. The multistable portion is selectively movable between a first position and a second position. The movement between first position and the second position is configured to remove the ice formation from the structure. The coupling portion couples the fixed portion to the multistable portion. The vibration source is configured to produce a resonant vibration to engage the movement of the multistable portion from the first position to the second position.