Global Patent Index - EP 3236068 A1

EP 3236068 A1 2017-10-25 - VARIABLE CAPACITY COMPRESSOR

Title (en)

VARIABLE CAPACITY COMPRESSOR

Title (de)

VERDICHTER MIT VARIABLER KAPAZITÄT

Title (fr)

COMPRESSEUR À CAPACITÉ VARIABLE

Publication

EP 3236068 A1 (EN)

Application

EP 15870024 A

Priority

  • JP 2014256348 A
  • JP 2015085259 W

Abstract (en)

[Object] To provide a variable capacity compressor capable of improving the startup performance of the compressor, reducing the amount of refrigerant circulating internally during an intermediate stroke, and eliminating the risk of becoming out of control due to contaminants in the refrigerant or the like. [Solution] The variable capacity compressor includes an open passage 50 communicating a control pressure chamber 4 with a suction chamber 33 and a valve accommodating chamber 51 formed in the open passage and the open passage 50 includes an upstream side open passage 50a communicating the control pressure chamber 4 with the valve accommodating chamber 51 and a downstream side open passage 50b communicating the valve accommodating chamber 51 with the suction chamber 33. In addition, the variable capacity compressor is provided with a valve element 52 accommodated in the valve accommodating chamber 51 so as to open or close the downstream side open passage 50b, urging means (spring 53) that urges the valve element 52 so as to open the downstream side open passage 50b, a discharge pressure introduction passage 54 communicating the valve accommodating chamber 51 with the discharge chamber, and a check valve 55, provided in the upstream side open passage 50a, that allows only a flow of the fluid from the control pressure chamber 4 to the valve accommodating chamber 51.

IPC 8 full level (invention and additional information)

F04B 27/18 (2006.01)

CPC (invention and additional information)

F04B 27/18 (2013.01); F04B 2027/1895 (2013.01)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

EPO simple patent family

EP 3236068 A1 20171025; EP 3236068 A4 20180606; CN 107110138 A 20170829; JP WO2016098822 A1 20170928; WO 2016098822 A1 20160623

INPADOC legal status


2018-06-06 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20180504

2018-06-06 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: F04B 27/18 20060101AFI20180427BHEP

2018-03-28 [DAV] REQUEST FOR VALIDATION OF THE EUROPEAN PATENT (IN ANY COUNTRY) (DELETED)

2018-03-28 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2017-10-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20170713

2017-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

2017-10-25 [AV] REQUEST FOR VALIDATION OF THE EUROPEAN PATENT IN:

- Countries: MA MD

2017-10-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: BA ME