Abstract: The present invention refers to an electric motor with segmented stator and a fluid compressor provided with an electric motor with segmented stator. Segmented stator (E) of the electric motor is composed of segments (4), wherein each segment (4) is constituted by a plurality of laminar segments (1) comprised of at least an external segment (11) and at least a tooth (13).

Abstract: The present invention relates to a thermal isolation, suitable for isolating the gas discharge tube (13) of a refrigerating compressor (1), where the discharge tube (13) is arranged inside an isolating tube (14), forming at least a confined space between said tubes, the novelty basically consisting in that the isolating tube (14) comprises covers (15, 17) spaced apart, the cross section of the isolating tube (14) being formed by joining together the cross sections of the spaced apart covers (15, 17). In the preferred embodiment of the invention, the isolating tube (14) comprises multiple spacers, preferably annular spacers (16), arranged around the gas discharge tube (13 and the isolating tube (14), the isolating tube (14) consisting of a number tube portions (20, 26) joined together along the extension of the gas discharge tube (13). The invention also relates to a process for assembling the thermal isolation in the gas discharge tube.

Abstract: A hermetic compressor with internal thermal insulation, comprising: a compression cylinder having one end closed by a valve plate provided with a discharge orifice and having a front face against which is mounted a cylinder cover internally defining a discharge chamber; and a spacing duct having one inlet end hermetically mounted to the front face of the valve plate and open to the discharge orifice and an outlet end hermetically mounted to the cylinder cover and open to the interior of the discharge chamber, said spacing duct defining a hermetic fluid communication between the interior of the compression cylinder and the discharge chamber maintaining the cylinder cover spaced from the valve plate and defining, with the latter, an annular plenum around said spacing duct.

Abstract: A clamp for mounting a tubular connector in a refrigeration circuit includes two semi-annular portions having end sections with each of the end sections including surfaces which extend radially outwardly from the annular portions of the clamp and a lock for locking the ends of the semi-annular portions together around the end of the tubular connector with the radially extending end surfaces of the end sections in abutting engagement.

Abstract: A piston-and-cylinder assembly, used in cooling sys terns that may include, for example, refrigerators, air-conditioning systems and the like. In order to solve the problems of volumetric loss (or of cooling capacity) of compressors in general, according to the present invention, one foresees configuring the cylinder (11) of the compression chamber in such a manner that the friction will be as low as possible in the phase in which the gas being compresses still does not exert a significant force onto the piston (10) top and will only have a significant effect during the phase in which the gas to be compressed exerts a greater force onto the piston (10), a moment when the volumetric loss impairs the efficiency of the compressor.

Abstract: A piston-and-cylinder assembly, used in cooling sys terns that may include, for example, refrigerators, air-conditioning systems and the like. In order to solve the problems of volumetric loss (or of cooling capacity) of compressors in general, according to the present invention, one foresees configuring the cylinder (11) of the compression chamber in such a manner that the friction will be as low as possible in the phase in which the gas being compresses still does not exert a significant force onto the piston (10) top and will only have a significant effect during the phase in which the gas to be compressed exerts a greater force onto the piston (10), a moment when the volumetric loss impairs the efficiency of the compressor.

Abstract: The acoustic muffler comprises a hollow body (10) defining at least one muffler chamber (11) which carries a gas inlet duct (20) and a gas outlet duct (30), at least one of the parts defined by the hollow body (10), by the gas inlet duct (20) and by the gas outlet duct (30) defining a gas passage (P) provided with at least one impurity filter (40) presenting a mesh surface (41) larger than that defined by the contour of the cross-section of said gas passage (P) and projecting to at least one of the sides of said cross-section.

Abstract: The invention refers to a clamp for tubular connections in small refrigeration systems of the type which comprises a compressor operatively associated with a refrigeration circuit containing at least one working fluid, said refrigeration system comprising a tubular connecting element, in an elastically deformable material, to be attached around a tubular element that conducts working fluid. The clamp comprises two semi-annular portions having, each one, a first end and a second end, said first ends being coupled to each other and the second end of one of said semi-annular portions being provided with a locking means to be engaged in a lock receiving means provided in the second end of the other semi-annular portion, the coupling between the two first ends being made so as to allow said two semi-annular portions to be displaced between an open position, allowing to place the clamp around the tubular connecting element and a closed position, with the locking means retained in the lock receiving means.

Abstract: A suction muffler for a refrigeration compressor, comprising a hollow body defining at least one dampening chamber that carries a gas inlet duct and a gas outlet duct presenting an inlet opening and an outlet opening, for communicating the interior and the exterior of the dampening chamber, at least one of the gas inlet and gas outlet ducts presenting at least one closed end, one of the inlet and outlet openings being positioned at a certain distance from said closed end, smaller than the distance of said opening in relation to the other opening of the same duct and in a region of the latter presenting a minimum acoustic pressure for a determined frequency, the dimensioning of said duct and of the cross section of the first of said openings being achieved so as to minimize the gas pulsation noises inside the suction muffler.

Abstract: A hermetic compressor with internal thermal insulation, comprising: a compression cylinder having one end closed by a valve plate provided with a discharge orifice and having a front face against which is mounted a cylinder cover internally defining a discharge chamber; and a spacing duct having one inlet end hermetically mounted to the front face of the valve plate and open to the discharge orifice and an outlet end hermetically mounted to the cylinder cover and open to the interior of the discharge chamber, said spacing duct defining a hermetic fluid communication between the interior of the compression cylinder and the discharge chamber maintaining the cylinder cover spaced from the valve plate and defining, with the latter, an annular plenum around said spacing duct.