Heat exchanger for a water heater

F - Mech Eng,Light,Heat,Weapons – 24 – H

Patent

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Details

F24H 1/10 (2006.01) F24H 1/40 (2006.01) F24H 9/12 (2006.01)

Patent

CA 2116777

A swimming pool or spa heater unit (10) having a heat exchanger manifold (28) designed to permit the use of direct plastic piping connections to the manifold header (33). The manifold is principally characterized by a header end having an inlet port (36) and outlet port (37) located on a level below the manifold inlets and outlets (32) communicating with the heat exchanger (34). The inverted arrangement of the header ports (36, 37) relative to the manifold inlets (32) and outlets (32) to the heat exchanger (34) permits unreturned water in the unit heated by residual heat from the heater (10) to form a temperature gradient therebetween which prevents the temperature of the water at the header connection from reaching a level incompatible with the use of direct plastic piping connections. The manifold is also integrally provided with weirs (40, 41) which serve to provide dry-fire protections for the heater.

Chaudière de piscine ou de bassin (10) possédant un collecteur échangeur de chaleur (28) conçu pour permettre l'utilisation de raccordements de tuyaux en plastique directs sur la tête du collecteur (33). Ce dernier se caractérise principalement par un extrémité de tête possédant un orifice d'admission (36) et un orifice de sortie (37) situé à un niveau inférieur aux admissions et sorties de collecteur (32) en communication avec l'échangeur de chaleur (34). L'agencement inversé des orifices de tête (36, 37) par rapport aux admission et sorties de collecteur (32) vers l'échangeur de chaleur (34) permet à l'eau restant dans l'unité chauffée par la chaleur résiduelle de la chaudière (10) de former un gradient de température qui empêche la température de l'eau au raccordement avec la tête d'atteindre un niveau incompatible avec l'utilisation de raccordements de tuyaux en plastique directs. Le collecteur est également pourvu de déversoirs (40, 41) qui assurent une protection de la chaudière en cas de fonctionnement à sec.

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