Cooling system for a beverage dispensing apparatus

B - Operations – Transporting – 67 – D

Patent

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Details

B67D 1/08 (2006.01)

Patent

CA 2507681

A beer or like alcohol beverage dispensing apparatus has a keg for containing the beverage. A keg dispensing device is connected through a top portion of the keg and extends to a bottom portion of the keg to draw the beverage from the keg adjacent the bottom portion. The apparatus has a cooling plate in heat transfer contacting relation with the bottom of the keg and also has a Peltier thermoelectric device connected to the cooling plate so as to extract heat from the cooling plate and thereby extract heat from the keg. The cooling apparatus has a first temperature sensor, mounted in heat sensing relation with a bottom portion of the keg and a second temperature sensor mounted in heat sensing relation with an upper portion of the keg. A controller controls the cooling apparatus in response to the first and second temperature sensors so as to control the operation of the cooling apparatus to extract heat from the bottom portion of the keg to lower and maintain the temperature of the beverage contained in the keg to a desired beverage serving temperature. The keg may comprise either steel, stainless steel or copper so as to provide a stratified cooling effect or may comprise aluminum so as to initially cool the beverage in the container in a more homogeneous manner.

L'invention porte sur un appareil distributeur de bière ou de boissons alcooliques similaires comportant un fût contenant la boisson, muni d'un distributeur traversant le sommet du fût et s'étendant jusqu'à sa base de manière à aspirer la boisson en un point touchant le fond. L'appareil comporte une plaque de refroidissement en contact avec le fond pour effectuer des transferts thermiques, et un dispositif thermoélectrique à effet Peltier relié à la plaque de refroidissement pour extraire de la chaleur de ladite plaque, et par là du fût. L'appareil comporte également un premier capteur de température monté de manière à détecter la température à la base du fût, et un deuxième capteur de température monté de manière à détecter la température au sommet du fût. Un contrôleur règle l'appareil en fonction des signaux de ces deux capteurs pour extraire de la chaleur à la base du fût et maintenir la température de la boisson à la température de service désirée. Le fût peut être en acier, en acier inox, ou en cuivre, pour produire un refroidissement stratifié, ou en aluminium, pour refroidir initialement la boisson de manière plus homogène.

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