摘要:
Method for selecting the polarization of the laser beam inside a laser cavity, which provides generation of a laser beam (1) inside said resonant laser cavity (20), comprising optical media (8,10,9;9',12;9',14;13;33), which include one or more birefringent optical media (9;12;14;13). According to the invention, said birefringent optical media (9;12;14;13) are used for inducing a double refraction effect on the laser beam (1) and separating the propagation directions of the different polarization components (2,3) of the laser beam (1) at the interface (22;32;41,42;51,52;61,62) between said media (9;12;14;13) and a second medium with a different refractive index, providing a plurality of separate resonance directions (6,7) which are distinct for the different polarization components (2, 3), and selectively align the cavity optical axis (20) on one of said resonance positions (6,7) through the adjustment of the position of one or more optical elements (8,9,10;9',12;9',14;13,33) forming said cavity (20).
摘要:
A gas burner system (1) for food cooking appliances is described, which comprises: 24. a duct (2) for supplying gas to said burner system (1), a first sump (2A) and a second sump (2B) being connected to said duct (2) through at least one pair of nozzles (2C, 2D), in particular a first nozzle (2C) and a second nozzle (2D); a pair of substantially concentric burners (3, 4), said pair of burners (3, 4) comprising an outer burner (3) and an inner burner (4), wherein the gas to be supplied to the pair of burners (3, 4) is appropriately mixed in said first sump (2A) and second sump (2B) with primary air taken from above a cooking top (8) on which the burner system (1) is mounted, in order to create an air-gas mixture for the pair of burners (3, 4). The invention is mainly characterized in that the burner system (1) comprises a pair of Venturi effect chambers (10) having a first axis (10A) inclined towards a central axis (A) of said burner system (1).
摘要:
The invention relates to an apparatus for security operation management, wherein a gunsight (1) for image vision sends a corresponding video signal to a remote operative control station (3; 50); the apparatus provides bidirectional communication between the gunsight (1) and the operative control station (3; 50) through respective luminous emitters.
摘要:
The present invention relates to a front-loading laundry washing machine wherein a cabinet (2) contains a wash tub in which a drum having a substantially horizontal axis of rotation is arranged. The machine has a load opening (3) which can be closed by means of a door (5) constrained to the cabinet. The door comprises an inner surface, which is at least partly inserted into the tub, and a frame which engages with the cabinet. The door also comprises collecting means arranged in the lower half of the frame, which collect water dripping from the door when the latter is opened.
摘要:
A sonotrode for the ultrasonic welding of materials is described, wherein a discoidal body (50) rotating about an axis of symmetry (Z) comprises a peripheral welding surface (52) adapted to be brought in contact with materials to be welded, a pair of pins (51) for connecting said body (50) to driving or balancing members, and a pair of opposite faces (53) each having a peripheral portion joining said welding surface and an inner portion joining one of said pins. The pins are surrounded by a substantially smooth annular groove (55).
摘要:
The invention relates to a process for the preparation of biodiesel, which comprises the separation of the triglyceride component from the free fatty acid one, both of which are contained in at least one biolipid, the esterification of said acid component, and the joint trans-esterification of the resulting esterifÊed acid component with said triglyceride component. The process according to the invention allows to use biolipids having any percentage of acidity as well as to prevent soap formation.
摘要:
The invention relates to an apparatus and method for decomposition of vegetable organic substances and thermochemical fuel gas production, said apparatus comprising: a dryer (1) which allows to reduce the moisture content of a first organic substance (10) and to obtain dried biomass (12), and a gas producer comprising a pyrolysis stage (3) for obtaining substances (15) comprising solid substances as well as condensable and incondensable gases, and a gasification stage (4) for gasifying the substances (15) produced by the pyrolysis stage (3) and for producing fuel gas (41), wherein the apparatus further comprises a torrefaction reactor (2), located between said dryer (1) and said pyrolysis stage (3) of the gas producer, for torrefying the dried biomass (12) and obtaining torrefied biomass (13), and a milling device (51) located between the torrefaction reactor (2) and the pyrolysis stage (3), said milling device (51) allowing to pulverize the torrefied biomass (13) and to obtain pulverized torrefied biomass (14).