EP 2256423 A1 20101201 - MULTI-TYPE AIR CONDITIONER AND A METHOD FOR CHECKING OPERATION OF INDOOR ELECTRONIC EXPANSION VALVES OF INDOOR UNITS
Title (en)
MULTI-TYPE AIR CONDITIONER AND A METHOD FOR CHECKING OPERATION OF INDOOR ELECTRONIC EXPANSION VALVES OF INDOOR UNITS
Title (de)
MEHRFACHTYP-KLIMAANLAGE UND EIN VERFAHREN ZUR PRÜFUNG DES BETRIEBS DER ELEKTRONISCHEN INNENRAUMAUSDEHNUNGSVENTILE VON INNENRAUMEINHEITEN
Title (fr)
CLIMATISEUR MULTI-BLOC ET UN PROCÉDÉ DE VÉRIFICATION DU FONCTIONNEMENT DE LA VANNE DE DÉTENTE ÉLECTRONIQUE D'INTÉRIEUR DE L'UNITÉ D'INTÉRIEUR
Publication
Application
Priority
- JP 2009050182 W 20090109
- JP 2008088597 A 20080328
Abstract (en)
Provided are a multi-type air conditioner, a method for checking the operation of indoor-side electronic expansion valves of indoor units, a computer program, and a fault diagnosis system that allow the operation of electronic expansion valves of indoor units to be reliably checked. A saturation temperature (TS) is calculated from a refrigerant pressure (PL) detected on the low-pressure side of an outdoor unit by a pressure sensor, and the operation of electronic expansion valves is checked using temperature differences (TD) between the calculated saturation temperature (TS) and the temperatures (TE) of indoor heat exchangers detected by temperature sensors. This allows the effect of variations in refrigerant pressure (PL) to be canceled so that the operation of the electronic expansion valves is reliably checked.
IPC 8 full level
F25B 49/00 (2006.01); F25B 13/00 (2006.01)
CPC (source: EP)
F25B 49/005 (2013.01); F25B 13/00 (2013.01); F25B 2313/0233 (2013.01); F25B 2600/21 (2013.01); F25B 2600/2513 (2013.01)
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2256423 A1 20101201; EP 2256423 A4 20170906; EP 2256423 B1 20190522; ES 2731592 T3 20191118; JP 2009243720 A 20091022; JP 5199713 B2 20130515; WO 2009119130 A1 20091001
DOCDB simple family (application)
EP 09725760 A 20090109; ES 09725760 T 20090109; JP 2008088597 A 20080328; JP 2009050182 W 20090109