Abstract:
A puncher (10) for forming foamed panels (11, 12, 13), said foamed panels comprising a casing made of sheet filled with foamed material, said puncher (10) being equipped with a wall (20) for the abutment and counterbalancing of the pressure generated by said foamed material during the step of expanding said foamed material, characterised in that the length of said abutment wall (20) is continuously variable between two predefined limits.
Abstract:
The present document describes a refrigerated display cabinet (10) comprising both at least one upper shelf (20A) accessible from above, typical of a so-called island refrigerated display group, and a plurality of display surfaces (14) and lower shelves (20B) extending horizontally accessible from the front, characteristic of a so-called wall-mounted refrigerated display group. The refrigerated display cabinet (10) also comprises a plurality of delivery ducts (22, 24) of an aeraulic circuit, configured to convey refrigerated air (Q i ) towards each display surface (14) and towards each shelf (20A, 20B). The delivery ducts (22, 24) comprise at least one main delivery duct (22), configured to send a first amount of refrigerated air {Q v , Q r , Q 2 ) towards each display surface (14) and towards at least part of the shelves (20A, 20B), and at least one secondary delivery duct (24), obtained inside at least part of the shelves (20A, 20B) and arranged in fluid connection downstream of the main delivery duct (22). Each secondary delivery duct (24) is configured to send a second amount of refrigerated air (Q i ) towards each display surface (14) and towards at least part of the shelves (20A, 20B), so that the first amount of refrigerated air (Q v , Q r , Q 2 ) can be at least partially mixed with the second amount of refrigerated air (Q i ).
Abstract:
A method is described for controlling an ozoniser group installed in a commercial open-type refrigerator bench for conserving, displaying and selling fresh food. The refrigerator bench comprises a refrigerated volume at least partially open, a refrigerating machine controlled by a temperature sensor and one or more fans configured for delivering the cold produced by the refrigerating machine into the refrigerated volume, through an air current. The ozoniser group comprises a control unit connected to a sensor for measuring the ozone concentration on one side and to an ozone generator on another side. The ozone generator is controlled as a function of an algorithm for estimating the relative humidity inside the refrigerator bench, so that when the estimated relative humidity value is below a threshold humidity value, the ozone generator is controlled as a function of the values measured by the sensor; when the estimated relative humidity value is above the threshold humidity value, the ozone generator is controlled with independent control logics excluding the values measured by the sensor, and when the refrigerator bench is cleaned, a first sub-step is carried out for checking the ozone generator as a function of the ozone concentration value measured by the sensor, and a subsequent second sub-step in which the ozone generator is controlled independently of the ozone concentration value measured by the sensor.