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Apparatus for preparing and distributing fermented diary products
| Details |
Inventors: Olivetti, Maurizio;
Assignee:
Primary Examiner: Simone; Timothy F.
Assistant Examiner:
Attorney, Agent or Firm: Darby & Darby
The apparatus comprises a vat having a lateral wall and a bottom for pasteurizing, maturing and maintaining a product. A cover adjacent to the lateral wall and to the bottom controls the temperature of the product present in the vat. A first heat-exchange circuit is defined by the cover and by the vat. A heat-exchange fluid circulates in the first heat-exchange circuit. The first heat-exchange circuit includes a heat generator for the heating of the heat-exchange fluid and includes a first heat exchanger for the cooling of the heat-exchange fluid. A second heat-exchange circuit has a tank. A diathermic liquid circulates in the second heat-exchange circuit. A second heat-exchanger is disposed in the tank, and a refrigeration group is connected, in a heat-exchange relationship, to the second heat-exchanger. The second heat-exchange circuit is connected to the first heat-exchanger by a by-pass conduit parallel to the first heat-exchanger. A first on-off valve is connected to the by-pass conduit and has a second on-off valve connected to an inlet of the first heat-exchanger to selectively control the flow of diathermic liquid passing from the second refrigeration circuit. A cleaning circuit has a cleaning water tub, an inlet, and an outlet communicating respectively with a cleaning water source and a discharge drain. An electronic control system programs and commands the preparation and distribution of the product. |
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DETAILED DESCRIPTION An aim of the present invention, therefore is to provide an apparatus for the preparation of fermented dairy products comprising: a vat for pasteurization, maturation and maintenance of the product; a cover adjacent to the lateral wall and at the bottom of the vat for the control of the temperature of the product present in the vat; a first heat-exchange circuit for heating and cooling the product contained in the vat, including the cover, a heat-exchange fluid circulating in the said first circuit, a heat generator to produce a heating of the heat-exchange liquid, a first heat exchanger to cause a cooling of the heat-exchange liquid; a second heat-exchange circuit for refrigeration, including the first heat-exchanger, a second heat-exchanger, a refrigeration group in a heat-exchange relationship with the second heat-exchanger, a tank for the diathermic liquid circulating in the said second refrigeration circuit between the tank and the first and second heat-exchanger, a by-pass conduit parallel to the first heat-exchanger, a first on-off valve on the by-pass conduit and a second on-off valve on the inlet of the first heat-exchanger, so that by opening the first valve and closing the second valve the diathermic liquid is prevented from passing through the first heat-exchanger in order to effect a heating phase on the product in the vat, while by closing the first on-off valve, and opening the second on-off valve, the diathermic liquid passes through the first heat exchanger to remove heat from the heat exchange liquid in the first heat exchanger and to produce a cooling of the product in the vat; a cleaning circuit comprising a cleaning water tub equipped with an inlet and an outlet respectively communicating with a cleaning water source and a discharge drain, a first conduit placing the washing tub in communication with the inside of the vat, and a second conduit connecting a discharge opening of the vat to the tub; and an electronic control system for programmed command of the pasteurisation, maturation, maintenance and cleaning phases
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