Safety heat exchanger for combining a heat pump with a...

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

Patent

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Details

F24D 17/02 (2006.01)

Patent

CA 2697642

The invention relates to a safety heat exchanger for combining a heat pump with a device of a drinking water supply facility, said heat exchanger having a primary circuit (4) containing drinking water, a secondary safety circuit (6) containing a sub-stance not hazardous to people's health as an antifreeze, and a tertiary circuit (7) containing a coolant. The safety heat exchanger is intended to prevent an impairment of the drinking water in the public drinking water supply. The safety heat exchanger comprises a primary circuit (4) having a feed pipe (3) connected to the drinking water supply facility and a discharge pipe (5) having electrically controllable solenoid valves (16). The primary circuit (4), or the coolant circuit (7), has a higher pressure than the safety circuit (6). The safety circuit (6) is provided with a pressure control device, which in terms of a control system is connected to the solenoid valves (16) such that the feed pipe (3) and the discharge pipe (5) of the drinking water to the drinking water facility are closed in the event of a pressure loss in the primary circuit (4) or in the coolant circuit (7).

L'invention concerne un échangeur thermique de sécurité pour la combinaison d'une pompe à chaleur avec un dispositif d'une installation d'alimentation en eau potable, cet échangeur thermique comprenant un circuit primaire (4) d'eau potable, un circuit de sécurité secondaire (6) dans lequel circule une matière qui ne présente pas de risques pour la santé et qui sert d'agent antigel, et un circuit tertiaire (7) d'agent réfrigérant. L'invention vise à créer un échangeur thermique de sécurité qui n'altère pas l'eau potable fournie par une installation publique d'alimentation en eau potable. L'échangeur thermique de sécurité comprend un circuit primaire (4) doté d'une arrivée (3) reliée à l'installation d'alimentation en eau potable et d'une sortie (5) pourvue d'électrovannes (16) à commande électrique. Le circuit primaire (4) ou le circuit d'agent réfrigérant (7) présente une pression supérieure au circuit de sécurité (6). Le circuit de sécurité (6) est équipé d'un contrôleur de pression dont la technique de commande est reliée aux électrovannes (16) de manière à ce que, lors d'une perte de pression dans le circuit primaire (4) ou dans le circuit d'agent réfrigérant (7), l'arrivée (3) et la sortie (5) d'eau potable de l'installation d'eau potable soient fermées.

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