EP3981987A4 - Screw compressor, and refrigeration cycle device - Google Patents

Screw compressor, and refrigeration cycle device Download PDF

Info

Publication number: EP3981987A4
Authority: EP; European Patent Office
Prior art keywords: refrigeration cycle; screw compressor; cycle device; compressor; screw
Prior art date: 2019-06-05
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP19931683.7A

Other languages

German (de)

French (fr)

Other versions

EP3981987A1 (en

Inventor

Yu KOBA

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Mitsubishi Electric Corp

Original Assignee

Mitsubishi Electric Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2019-06-05

Filing date

2019-06-05

Publication date

2022-06-29

2019-06-05 Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp

2022-04-13 Publication of EP3981987A1 publication Critical patent/EP3981987A1/en

2022-06-29 Publication of EP3981987A4 publication Critical patent/EP3981987A4/en

Status Withdrawn legal-status Critical Current

Links

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/48—Rotary-piston pumps with non-parallel axes of movement of co-operating members
- F04C18/50—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees
- F04C18/52—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Applications Or Details Of Rotary Compressors (AREA)

EP19931683.7A 2019-06-05 2019-06-05 Screw compressor, and refrigeration cycle device Withdrawn EP3981987A4 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/JP2019/022282 WO2020245932A1 (en)	2019-06-05	2019-06-05	Screw compressor, and refrigeration cycle device

Publications (2)

Publication Number	Publication Date
EP3981987A1 EP3981987A1 (en)	2022-04-13
EP3981987A4 true EP3981987A4 (en)	2022-06-29

Family

ID=73652582

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19931683.7A Withdrawn EP3981987A4 (en)	2019-06-05	2019-06-05	Screw compressor, and refrigeration cycle device

Country Status (2)

Country	Link
EP (1)	EP3981987A4 (en)
WO (1)	WO2020245932A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP4067659B1 (en) *	2019-11-26	2023-09-20	Mitsubishi Electric Corporation	Screw compressor
WO2022244219A1 (en) *	2021-05-21	2022-11-24	三菱電機株式会社	Screw compressor
WO2025238515A1 (en)	2024-05-13	2025-11-20	Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A.	Improved screw compressor for air conditioning system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60164693A (en) *	1984-02-06	1985-08-27	Daikin Ind Ltd	Screw compressor capacity control device
US4610613A (en) *	1985-06-03	1986-09-09	Vilter Manufacturing Corporation	Control means for gas compressor having dual slide valves
FR2661457A1 (en) *	1990-04-30	1991-10-31	Zimmern Bernard	SLIDING COMPRESSOR WITH EQUALIZING SPRINGS.
JPH0552194A (en) *	1991-08-22	1993-03-02	Daikin Ind Ltd	Capacity control device of screw type two-step compressor
US5509273A (en) *	1995-02-24	1996-04-23	American Standard Inc.	Gas actuated slide valve in a screw compressor
US5979168A (en) *	1997-07-15	1999-11-09	American Standard Inc.	Single-source gas actuation for screw compressor slide valve assembly
JP2013036403A (en) *	2011-08-09	2013-02-21	Daikin Industries Ltd	Screw compressor
EP2359006B1 (en) *	2008-11-20	2017-01-18	Aaf McQuay Incorporated	Screw compressor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5943101B2 (en)	1979-11-13	1984-10-19	富士電機株式会社	Amorphous semiconductor solar cell
FR2526880B1 (en) *	1982-05-13	1986-07-11	Zimmern Bernard	SCREW AND PINION MACHINE WITH VARIABLE COMPRESSION RATE
JPS6456592U (en) *	1987-10-02	1989-04-07
JP5634228B2 (en) *	2010-11-12	2014-12-03	三菱電機株式会社	Screw refrigerator
JP5881403B2 (en) *	2011-12-15	2016-03-09	三菱電機株式会社	Screw compressor
WO2017145251A1 (en) *	2016-02-23	2017-08-31	三菱電機株式会社	Screw compressor and refrigeration cycle device

2019
- 2019-06-05 WO PCT/JP2019/022282 patent/WO2020245932A1/en not_active Ceased
- 2019-06-05 EP EP19931683.7A patent/EP3981987A4/en not_active Withdrawn

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60164693A (en) *	1984-02-06	1985-08-27	Daikin Ind Ltd	Screw compressor capacity control device
US4610613A (en) *	1985-06-03	1986-09-09	Vilter Manufacturing Corporation	Control means for gas compressor having dual slide valves
FR2661457A1 (en) *	1990-04-30	1991-10-31	Zimmern Bernard	SLIDING COMPRESSOR WITH EQUALIZING SPRINGS.
JPH0552194A (en) *	1991-08-22	1993-03-02	Daikin Ind Ltd	Capacity control device of screw type two-step compressor
US5509273A (en) *	1995-02-24	1996-04-23	American Standard Inc.	Gas actuated slide valve in a screw compressor
US5979168A (en) *	1997-07-15	1999-11-09	American Standard Inc.	Single-source gas actuation for screw compressor slide valve assembly
EP2359006B1 (en) *	2008-11-20	2017-01-18	Aaf McQuay Incorporated	Screw compressor
JP2013036403A (en) *	2011-08-09	2013-02-21	Daikin Industries Ltd	Screw compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020245932A1 *

Also Published As

Publication number	Publication date
WO2020245932A1 (en)	2020-12-10
EP3981987A1 (en)	2022-04-13

Legal Events

Date	Code	Title	Description
2020-12-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2022-03-11	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2022-03-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2022-04-13	17P	Request for examination filed	Effective date: 20211125
2022-04-13	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
2022-06-29	A4	Supplementary search report drawn up and despatched	Effective date: 20220531
2022-06-29	RIC1	Information provided on ipc code assigned before grant	Ipc: F04C 28/18 20060101ALI20220524BHEP Ipc: F04C 18/52 20060101AFI20220524BHEP
2022-09-14	DAV	Request for validation of the european patent (deleted)
2022-09-14	DAX	Request for extension of the european patent (deleted)
2024-07-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: EXAMINATION IS IN PROGRESS
2024-08-14	17Q	First examination report despatched	Effective date: 20240716
2025-07-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2025-08-13	18D	Application deemed to be withdrawn	Effective date: 20250329

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