公开(公告)号：US20240384718A1

公开(公告)日：2024-11-21

申请号：US18782891

申请日：2024-07-24

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Michael J. Lucas ,  Gautier Lombart ,  Christian Doucet ,  Thomas Gholami-Zouj

IPC: F04C18/12 ,  F04C25/00 ,  F04C29/00 ,  F04C29/06

Abstract: A positive displacement roots blower can include a housing having an inlet structured to receive an incoming flow of a fluid, an outlet structured to receive an outgoing flow of the fluid, and a passage. The positive displacement roots blower can also include a pair of intermeshed rotating members supported for complementary rotation within the housing, where the rotating members and the housing form respective operating volumes there between which rotate with the rotating members. Each of the respective operating volumes has the following regions: (1) open to inlet/closed to outlet; (2) closed to inlet/closed to outlet; and (3) closed to inlet/open to outlet. The passage includes a restriction and connects to at least one of the operating volumes when the at least one of the respective operating volumes is in region (2). The restriction can be a venturi feedback connecting to the outlet.

公开(公告)号：US20220145885A1

公开(公告)日：2022-05-12

申请号：US17525133

申请日：2021-11-12

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Michael J. Lucas ,  Gautier Lombart ,  Christian Doucet ,  Thomas Gholami-Zouj

IPC: F04C18/12 ,  F04C25/00

Abstract: A positive displacement roots blower can include a housing having an inlet structured to receive an incoming flow of a fluid, an outlet structured to receive an outgoing flow of the fluid, and a passage. The positive displacement roots blower can also include a pair of intermeshed rotating members supported for complementary rotation within the housing, where the rotating members and the housing form respective operating volumes there between which rotate with the rotating members. Each of the respective operating volumes has the following regions: (1) open to inlet/closed to outlet; (2) closed to inlet/closed to outlet; and (3) closed to inlet/open to outlet. The passage includes a restriction and connects to at least one of the operating volumes when the at least one of the respective operating volumes is in region (2). The restriction can be a venturi feedback connecting to the outlet.

公开(公告)号：US10851788B2

公开(公告)日：2020-12-01

申请号：US16227826

申请日：2018-12-20

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Michael J. Lucas ,  Thomas Gholami-Zouj ,  Christian Doucet ,  Jan Bart Taminiau ,  Gautier Lombart

IPC: F04C29/06 ,  F04C29/04 ,  F04C18/12

Abstract: A vacuum roots blower includes a rotor capable of being rotated to capture a gas from an inlet and further rotated to discharge the captured gas from an outlet. The captured gas is held within a pocket formed between lobes of the rotor and the adjacent housing within which the rotor is rotated. The vacuum roots blower includes a pressure relief system capable of delivering a pressure relief gas to the pocket. The pressure relief system includes a sonic passage structured to produce a choked flow condition as the pressure relief system fills the pocket with pressure relief gas. In one form the pressure relief gas can be a cooling gas, but other forms such as ambient air are also contemplated.

公开(公告)号：US12060881B2

公开(公告)日：2024-08-13

申请号：US17525133

申请日：2021-11-12

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Michael J. Lucas ,  Gautier Lombart ,  Christian Doucet ,  Thomas Gholami-Zouj

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/12 ,  F04C25/00 ,  F04C29/00 ,  F04C29/06

CPC classification number: F04C18/126 ,  F04C25/00 ,  F04C29/0035 ,  F04C29/06 ,  F04C2240/20

Abstract: A positive displacement roots blower can include a housing having an inlet structured to receive an incoming flow of a fluid, an outlet structured to receive an outgoing flow of the fluid, and a passage. The positive displacement roots blower can also include a pair of intermeshed rotating members supported for complementary rotation within the housing, where the rotating members and the housing form respective operating volumes there between which rotate with the rotating members. Each of the respective operating volumes has the following regions: (1) open to inlet/closed to outlet; (2) closed to inlet/closed to outlet; and (3) closed to inlet/open to outlet. The passage includes a restriction and connects to at least one of the operating volumes when the at least one of the respective operating volumes is in region (2). The restriction can be a venturi feedback connecting to the outlet.