Global Patent Index - EP 1726895 A1

EP 1726895 A1 20061129 - Anti-freeze protection device for chillers

Title (en)

Anti-freeze protection device for chillers

Title (de)

Frostschutzvorrichtung für Kältegerät

Title (fr)

Dispositif de protection anti-givre pour un système de réfrigération

Publication

EP 1726895 A1 20061129 (EN)

Application

EP 05425467 A 20050630

Priority

IT PD20050160 A 20050527

Abstract (en)

The invention is a new anti-freeze protection device for chillers, comprising an electric/electronic control circuit (3) connected to ice sensors (1) and local heaters (2). The sensors (1) and heaters (2) are applied and positioned in the areas where ice is most likely to form and/or in which ice causes the greatest reduction in chiller efficiency. In the event of formation of ice, the sensors indicate its presence to the electric/electronic circuit (3) which suspends operation of the chiller, adjusts opening and closing of the expansion valves (4) located at the evaporator inlet, or suspends operation of the chiller compressor only, and if necessary operates the heaters (2), thus melting the ice into water which is removed by the known means (C) used for removing condensate.

IPC 8 full level

F25D 21/08 (2006.01)

CPC (source: EP)

F25D 21/02 (2013.01); F25D 21/08 (2013.01); F25B 2700/02 (2013.01); F25D 21/006 (2013.01); F25D 21/008 (2013.01); F25D 2321/1413 (2013.01); F25D 2400/36 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR LV MK YU

DOCDB simple family (publication)

EP 1726895 A1 20061129; IT PD20050160 A1 20061128

DOCDB simple family (application)

EP 05425467 A 20050630; IT PD20050160 A 20050527