Global patent index - EP 0631095 B1

EP 0631095 B1 2000-01-12 - Method of sealing in a non-azeotrope refrigerant and controlling the composition of the refrigerant in a refrigeration cycle

Title (en)

Method of sealing in a non-azeotrope refrigerant and controlling the composition of the refrigerant in a refrigeration cycle

Title (de)

Verfahren zum Einfüllen eines nichtazeotropen Kältemittels in einen Kältekreislauf und zum Einstellen dessen Zusammensetzung

Title (fr)

Procédé de chargement d'un réfrigérant non-azéotrope et de réglage de la composition du réfrigérant dans un cycle frigorifique

Publication

EP 0631095 B1 (EN)

Application

EP 94109583 A

Priority

JP 15324693 A

Abstract (en)

[origin: EP0631095A2] The composition of a refrigerant within the refrigeration cycle in which a non-azeotrope refrigerant is used is controlled to a predetermined composition. Further, the amount of the refrigerant is detected, and the composition and amount of the refrigerant within the refrigeration cycle are displayed, facilitating the maintenance of the refrigerant. The refrigeration cycle includes a compressor (1), a heat-source-side heat exchanger (2), use-side heat exchangers (20a,20b), and a pressure reducing apparatus (7,21a,21b), in which cycle a non-azeotrope refrigerant is used as a refrigerant. The refrigeration cycle further includes a sensor (8), disposed in a pipe portion where a liquid phase is formed, for detecting the composition of the non-azeotrope refrigerant circulating within the refrigeration cycle, and devices (5,6,10) for controlling the composition to a predetermined composition, a sensor for detecting the amount of refrigerant and a device for displaying the amount of the refrigerant. Since the composition of the refrigerant circulating within the refrigeration cycle is detected and control appropriate for the detected composition is performed, it becomes possible to perform a stable operation even when the refrigerant leaks outside and the composition of the refrigerant varies.

IPC 1-7 (main, further and additional classification)

F25B 49/02; F25B 1/00; F25B 45/00

IPC 8 full level (invention and additional information)

F25B 1/00 (2006.01); F25B 5/00 (2006.01); F25B 9/00 (2006.01); F25B 13/00 (2006.01)

CPC (invention and additional information)

F25B 9/006 (2013.01); F25B 13/00 (2013.01); F25B 2400/13 (2013.01); F25B 2400/16 (2013.01)

Designated contracting state (EPC)

DE GB

EPO simple patent family

EP 0631095 A2 19941228; EP 0631095 A3 19950301; EP 0631095 B1 20000112; DE 69422551 D1 20000217; DE 69422551 T2 20000803; DE 69432489 D1 20030515; DE 69432489 T2 20040212; EP 0838643 A2 19980429; EP 0838643 A3 20001115; EP 0838643 B1 20030409; JP H0712411 A 19950117

INPADOC legal status

2006-03-01 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

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- Effective date: 20050621

2006-01-03 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060103

2005-06-21 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-06-08 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Year of fee payment: 11

2004-05-26 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20040526

- Year of fee payment: 11

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

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2000-12-27 [26N] NO OPPOSITION FILED

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2000-02-17 [REF] CORRESPONDS TO:

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- Country of Ref Document: DE

- Date of Ref Document: 2000-02-17

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): DE GB

1996-09-04 [17Q] FIRST EXAMINATION REPORT

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- Effective date: 19960723

1995-03-01 [AK] DESIGNATED CONTRACTING STATES:

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1994-12-28 [17P] REQUEST FOR EXAMINATION FILED

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1994-12-28 [AK] DESIGNATED CONTRACTING STATES:

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