US 12,038,008 B2
Compressor with injection mechanism
Kenji Watanabe, Shiga (JP); Akinori Fukuda, Shiga (JP); Akihiro Hayashi, Shiga (JP); Hideto Oka, Shiga (JP); and Keisuke Noba, Shiga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/759,955
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Sep. 23, 2020, PCT No. PCT/JP2020/035766
§ 371(c)(1), (2) Date Aug. 2, 2022,
PCT Pub. No. WO2021/157121, PCT Pub. Date Dec. 8, 2021.
Claims priority of application No. JP2020-016319 (JP), filed on Feb. 3, 2020.
Prior Publication US 2023/0066647 A1, Mar. 2, 2023
Int. Cl. F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 18/00 (2006.01); F04C 18/02 (2006.01); F04C 23/00 (2006.01); F04C 29/00 (2006.01); F04C 29/12 (2006.01)
CPC F04C 29/0007 (2013.01) [F04C 18/02 (2013.01); F04C 18/0215 (2013.01); F04C 23/008 (2013.01); F04C 29/128 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A compressor with an injection mechanism, the compressor comprising:
a sealed volume, wherein the sealed volume is reduced by a change of a location of a compression chamber from a suction port to a discharge port,
wherein for the compressor to compress fluid sucked in the suction port to discharge the fluid to outside in the discharge port, the fluid to be compressed is injected into the compression chamber through a sheet-shaped check valve, wherein
the compression chamber is formed between a fixed scroll and an orbiting scroll,
an injection passage connected to the compression chamber is formed in the fixed scroll,
the injection passage is formed radially from an outer circumferential surface of the fixed scroll,
the injection passage is formed by an injection inlet passage, an injection communication passage, and an injection discharge passage,
one end of a check valve chamber on the side of the injection communication passage is formed such that the check valve chamber intersects the injection inlet passage at an acute angle,
the injection passage and the check valve chamber are formed in an involute extension angle extension side portion of a blade of the fixed scroll in which the compression chamber is formed,
the check valve chamber is present between the injection passage and the suction port,
the check valve chamber, the injection communication passage, and the injection discharge passage open to face an outer surface of the fixed scroll,
a lid body is attached to openings of upper surfaces of the check valve chamber, the injection communication passage, and the injection discharge passage such that the sheet-shaped check valve is sandwiched between the lid body and the openings of the upper surfaces of the check valve chamber, the injection communication passage, and the injection discharge passage,
the sandwiched sheet-shaped check valve is long and thin and is formed along the check valve chamber,
one end of the sheet-shaped check valve is fastened to the fixed scroll through a screw,
the other end of the sheet-shaped check valve is a valve portion that opens and closes the injection communication passage,
the lid body shuts off and hermetically closes the openings of the upper surfaces of the check valve chamber, the injection communication passage, and the injection discharge passage from outside.