US 12,492,699 B2
Compressor and air conditioner
Ryosuke Wada, Osaka (JP); Yuya Sunahara, Osaka (JP); Koichi Irikawa, Osaka (JP); Emu Kato, Osaka (JP); and Haruka Hosogoe, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Oct. 17, 2024, as Appl. No. 18/918,936.
Application 18/918,936 is a continuation of application No. PCT/JP2023/014991, filed on Apr. 13, 2023.
Claims priority of application No. 2022-075940 (JP), filed on May 2, 2022.
Prior Publication US 2025/0043783 A1, Feb. 6, 2025
Int. Cl. F04C 18/344 (2006.01); F04C 18/356 (2006.01); F04C 29/04 (2006.01); F04C 29/12 (2006.01); F25B 31/02 (2006.01); F04C 23/00 (2006.01)
CPC F04C 18/356 (2013.01) [F04C 18/3448 (2013.01); F04C 29/04 (2013.01); F04C 29/12 (2013.01); F25B 31/02 (2013.01); F04C 23/008 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A compressor comprising:
a compression mechanism including a piston and a cylinder, the piston and the cylinder defining a compression chamber in which a refrigerant is compressed;
an injection valve disposed in an injection passage that communicates with the compression chamber; and
an injection pipe that allows the refrigerant to be supplied to the injection passage,
the injection valve including
a valve body disposed to be movable along a first direction,
a valve presser that is disposed closer to the injection pipe than the valve body and restricts movement of the valve body toward the injection pipe, and
a valve seat that is disposed closer to the compression chamber than the valve body and restricts movement of the valve body toward the compression chamber,
the valve presser having a first hole through which the refrigerant passes,
the valve body having a second hole through which the refrigerant passes,
a buffer space being formed that communicates with a first space and into which the refrigerant flowing from the compression chamber into the first space flows, the first space accommodating the valve body between the valve presser and the valve seat, and
the buffer space having an opening facing the valve body, the opening not overlapping an annular peripheral edge located around the second hole of the valve body when viewed in the first direction,
a ratio of a depth of the buffer space in the first direction of the first space to a length of the first hole in the first direction being 0.3 to 0.6,
the valve seat including a third hole that allows the first space and the compression chamber to communicate with each other, and
a ratio of a volume of the buffer space to a total volume of the first space and the third hole being 0.2 to 0.8.