US 11,859,615 B2
Scroll compressor
Chun Yang, Suzhou (CN); Hongcai Zheng, Jiangsu (CN); and Hongfei Shu, Jiangsu (CN)
Assigned to Copeland Climate Technologies (Suzhou) Co. Ltd., Jiangsu (CN)
Appl. No. 17/773,813
Filed by Emerson Climate Technologies (Suzhou) Co., Ltd., Jiangsu (CN)
PCT Filed Aug. 21, 2020, PCT No. PCT/CN2020/110360
§ 371(c)(1), (2) Date May 2, 2022,
PCT Pub. No. WO2021/088467, PCT Pub. Date May 14, 2021.
Claims priority of application No. 201911065644.8 (CN), filed on Nov. 4, 2019; and application No. 201921915060.0 (CN), filed on Nov. 4, 2019.
Prior Publication US 2022/0381243 A1, Dec. 1, 2022
Int. Cl. F04C 18/02 (2006.01); F04C 27/00 (2006.01); F04C 28/18 (2006.01); F04C 28/26 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 27/005 (2013.01); F04C 28/185 (2013.01); F04C 28/26 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A scroll compressor comprising:
a partition, wherein the partition divides a space inside the scroll compressor into a high pressure space and a low pressure space;
a compression mechanism, wherein the compression mechanism comprises a fixed scroll and a movable scroll, wherein the fixed scroll and the movable scroll cooperate with each other to define a series of compression chambers;
a capacity adjustment device, wherein the capacity adjustment device comprises a bypass passage and an adjusting member, the bypass passage penetrates through an end plate of the fixed scroll, so that a first end of the bypass passage is opened at a first side of the end plate of the fixed scroll to communicate with a first compression chamber of the series of compression chambers and a second end of the bypass passage is opened at the an opposite second side of the end plate of the fixed scroll and selectively communicates with the low pressure space, the adjusting member is configured to be movable in an axial direction relative to the fixed scroll to establish or interrupt communication between the first compression chamber;
a back pressure chamber, wherein the back pressure chamber is formed between the fixed scroll and the partition and communicates with a second compression chamber of the series of compression chambers via a back pressure passage; and
a sealing assembly, wherein the sealing assembly separates the back pressure chamber from the high pressure space and the low pressure space,
wherein a first sealing portion is formed between the sealing assembly and the partition, and a sealing surface of the first sealing portion is a flexible sealing surface, wherein the capacity adjustment device is provided with a variable pressure chamber and is configured to move the adjusting member in the axial direction relative to the fixed scroll by changing a pressure in the variable pressure chamber.