Abstract: A fryer includes a frying tank adapted to contain a cooking liquid; a pump adapted to suck from the frying tank, by suction duct, a portion of the cooking liquid and adapted to discharge into the frying tank, by a discharge duct, the portion of the cooking liquid; The fryer also includes a heater associated with the suction duct and/or the discharge duct and adapted to heat the cooking liquid flowing through the suction duct and/or through the discharge duct, the cooking liquid being heated only by the heater; and at least one mixer associated with the suction duct and/or discharge duct and adapted to mix cooking liquid flowing through the suction duct and/or discharge duct. The mixer is placed immediately upstream or downstream, or in correspondence with the heater to improve the heat exchange of the cooking liquid with the heater.

Abstract: A hydraulic pump is described, comprising at least one inlet duct for a fluid, at least one outlet duct for the fluid and at least one pumping unit interposed between the inlet and outlet ducts. At least one multifunction valve is interposed between the inlet duct, upstream of the pumping unit, and the outlet duct, downstream of the pumping unit, which valve is configured to divert the flow of fluid from the inlet duct to the outlet duct without the fluid flowing into the pumping unit. The multifunction valve comprises a valve body that defines an inner bypass channel in which a shutter element is axially movable, an actuator member operatively associated with the shutter element and configured to move it from a closing position to an opening position of the bypass channel, and an elastic contrast element operatively associated with the shutter element and configured to keep it in the first closing position of the bypass channel when such shutter element is not actuated by the actuator member.

Abstract: A hydraulic pump is described, comprising at least one inlet duct for a fluid, at least one outlet duct for the fluid and at least one pumping unit interposed between the inlet and outlet ducts. At least one multifunction valve is interposed between the inlet duct, upstream of the pumping unit, and the outlet duct, downstream of the pumping unit, which valve is configured to divert the flow of fluid from the inlet duct to the outlet duct without the fluid flowing into the pumping unit. The multifunction valve comprises a valve body that defines an inner bypass channel in which a shutter element is axially movable, an actuator member operatively associated with the shutter element and configured to move it from a closing position to an opening position of the bypass channel, and an elastic contrast element operatively associated with the shutter element and configured to keep it in the first closing position of the bypass channel when such shutter element is not actuated by the actuator member.