Abstract: The present utility model application refers to a new constructive arrangement introduced in acoustic filter of hermetic compressor, and more particularly, a new constructive arrangement that optimizes the suction flow of the acoustic filter, which is normally arranged within the hermetic housing of the hermetic compressor. The suction acoustic filter (1) is composed by at least one outlet pipe (2), outlet pipe (2) comprising at least two independent suction outlets (21). Each independent suction outlet (21) extending along outlet pipe (2).

Abstract: The present invention refers to a crankshaft (1) for an alternative compressor comprising a main shaft (21) connected to an eccentric pin (2) by means of a peripheral flange (3) containing a lubricating hole (24) extending through said eccentric pin (2) and through at least part of the body of main shaft (21), one of the edges of said hole (24) being on the cylindrical surface (2a) of said eccentric pin (2). With this type of hole, the present invention allows for the use of shafts having extremely low diameters (and, as result, with low viscous loss), even with high eccentricities, whereby an excellent capacity of oil pumping and mechanical strength is maintained.

Abstract: A system, method and arrangement (100) for connecting and fixing an electronic control (50) to an airtight compressor (200) comprising a printed-circuit board (10), an outer housing (150) and an electronic control connector (30), the electronic control (50) and the electronic control connector (30) being arranged on the printed-circuit board (10), the electronic control connector (30) being electrically connected to the electronic control (50), the printed-circuit board (10) simultaneously establishing contact with the airtight compressor (200) by contact with the fence (201) of the airtight compressor (200), electric connection with the airtight compressor (200) by an electric connection between the electronic control connector (30) and an airtight compressor connector (210) and establishing grounding an electromagnetic interference filtering circuit (130) with the airtight compressor (200), the outer housing (150) encapsulating the printed-circuit board (10) and being fixed to the fence (201) of the airtigh

Abstract: An electronic control connector (30) including at least an input orifice (32a), at least a fixing leg (33) and at least a terminal (34), the terminal (34) being inserted inside the input orifice (32a), the electronic control connector (30) being fixed to a printed circuit board (10) of an electronic control (50), by a fixing between the fixing leg (33) and a fixing orifice (16) disposed on the printed circuit board (10) of the electronic control (50), the fixing of the electronic control connector (30) to the printed circuit board (10) also establishing an electrical connection between the terminal (34) of the electronic control connector (30) and the tracks of the printed circuit board (10) of the electronic control (50).

Abstract: The plasma reactor comprises a reaction chamber (23) connectable to a source of ionizable gases (25) and to a heating device (80), said reactor (10) being subjected to the phases of heating (A), cleaning (L) and/or surface treatment (S), cooling (R), unloading (D) and loading (C) of metallic pieces (1). The installation comprises: at least two reactors (10), each being selectively and alternately connected to: the same source of ionizable gases (25); the same vacuum source (60); the same electrical energy source (50); and to the same heating device (80), the latter being displaceable between operative positions, in each of which surrounding laterally and superiorly a respective reactor (10), while the latter is in its heating phase (A) and cleaning phase (L) and/or in the surface treatment phase (S) of the metallic pieces (1).

Abstract: An actuation system for a resonant linear compressor (50) is disclosed, applied to cooling systems, the latter being particularly designed to operate at the electromechanical frequency of said compressor (50), so that the system will be capable of raising the maximum power supplied by the linear actuator, in conditions of overload of said cooling system. Additionally, an actuation method for a resonant linear compressor (50) is provided, the operation steps of which enable one to actuate the equipment at the electromechanical resonance frequency, as well as to control the actuation thereof in over load conditions.

Abstract: A vertical axis washing machine provided with a washing fluids drainage system whose washing fluids are suctioned into the agitator and then drained from the washing basket from its central—bottom opening. In particular, a vertical axis washing machine (1) wherein the agitator (3) provides a radial suction flow, through a surrounding wall (31) and an axial discharge flow through its lower end (32), the lower end (32) of the agitator (3) has a fluid communication with the drain hole (21) of the washing basket (2), and the drain hole (21) of the washing basket (2) has a fluid communication with the drain pump (4).

Abstract: The arrangement of the present invention is applied to a compressor which comprises a bearing hub housing a crankshaft and presenting at least a first and a second bearing portion, spaced apart by a circumferential recess. The crankshaft presents at least a first and a second support portion, spaced apart by a circumferential recess, which is offset from the circumferential recess of the bearing hub. At least one of the bearing portions and support portions has an axial extension superior to that required for radially bearing the crankshaft, the first and second bearing portions defining, with the first and second support portions, respectively, a first and a second radial bearing regions having the axial extensions required for a radial bearing for the crankshaft, presenting lower loss by viscous friction.

Abstract: The compressor comprises: a crankcase (10) carrying a cylinder (20) and a bearing hub (40) having a first and a second end portions (40a, 40b) and defining a radial bearing (41), in which is housed a crankshaft (50); and a connecting rod (60) coupled to a piston (30) housed in the cylinder (20) and having a larger eye (61) mounted in an eccentric end portion (55) of the crankshaft (50). Each of said end portions (40a, 40b) is defined by a bushing extension (45, 46) affixed in the interior of the bearing hub (40) and having an end portion (45a, 46a) projecting outwards from the bearing hub (40), in order to be elastically and radially deformed when pressed by a confronting portion of the crankshaft (50), which presents coaxiality deviation in relation to the axis (X1) of the radial bearing (41).

Abstract: A flow restrictor (1) for application in bearing formation between a piston (2) and a cylinder (3) of a gas compressor (4). The gas compressor (4) includes a pad (5) externally surrounding the cylinder (3) and an inner cavity (6), arranged between the pad (5) and the cylinder (3), fluidly fed by a discharge flow arising from a compression movement exerted by the piston (2) within the cylinder (3). The gas compressor (4) includes a bearing formation gap (7) separating a piston outer wall (2) and an inner cylinder wall (3), and a flow restrictor (1) is provided with a housing (12) fluidly associating the inner cavity (6) to the bearing formation gap (7). The flow restrictor (1) includes a porous element (8), associated to the housing (12), provided with at least a restrictor part provided with a porosity sized to limit the gas flow flowing from the inner cavity (6) to the bearing formation gap (7).

Abstract: The present invention refers to a connecting rod/piston arrangement for alternative compressor, comprising using at least an intermediate element capable of associating said connecting rod with the piston, wherein both do not radially contact with one another. A process for assembling said connecting rod/piston arrangement for alternative compressor is also disclosed. The connecting rod/piston arrangement for alternative compressor comprises at least a piston (1), at least an intermediate element (2) and at least a connecting rod (3), wherein said piston (1) comprises at least a non-through axial channel (11); said intermediate element (2) comprises at least a through axial channel (21); and said connecting rod (3) comprises at least a connection end (31). In this regard, the intermediate element (2) is securely housed inside the non-through axial channel (11) of piston (1); and said connection end (31) of connecting rod (3) is securely housed inside the through axial channel (21) of intermediate element (2).

Abstract: The present disclosure refers to a partial texturization applied on a contact interface of a scroll fluid compressor. The scroll fluid compressor may have an orbiting whorl, a non-orbiting whorl, and a block frame which holds the orbiting whorl in contact with the non-orbiting whorl. The partial texturization can be applied on the lower surface of the orbiting whorl, the upper surface of the block frame, or both, and can include at least two first regions separated by second regions. The first regions have surfaces including a plurality of micro-cavities and the second regions have substantially smooth surfaces.

Abstract: A method for protection and diagnosis of a linear compression (2), the linear compressor (2) including at least one electronic control (11), the protection method being configured to perform the following steps at each work cycle of the linear compressor (2): detecting a suction time (ts) of the linear compressor (2); detecting a compression time (tc) of the linear compressor; calculating, after the step of detecting a compression time (tc) of the linear compressor, a decision parameter (?T) equivalent to the difference between the previously detected suction time (ts) and the compression time (tc).

Abstract: The present invention refers to methods for controlling a double suction compressor for application in refrigeration systems, capable of meeting the different demands for cost, efficiency and control of temperatures by means of techniques of complexity levels and different configurations of the elements from the control loop (temperature sensors, actuators, controllers, etc.).

Abstract: The present invention refers to the arrangement of components comprised in a linear compressor (1), which is fundamentally composed by at least one resonant oscillating mechanism comprising at least one resonant spring (2) which defines at least one neutral point (21), at least one magnet (3) and at least one piston (4); at least one intermediate element (5) which defines an axially flexible surface (51); at least one flat spring (6) which defines at least one binding structure (62); at least one shell (7); and at least one attaching means (8).

Abstract: A control method and a system for controlling the piston of a resonant linear compressor including at least one electronic control unit, the electronic control unit including at least one observing electronic circuit and at least one control circuit associated to each other. The observing electronic circuit is configured for: measuring at least one electric magnitude of the electric motor; estimating at least one set of electric parameters and at least one set of mechanical parameters of the resonant linear compressor; and estimating and providing at least one control parameter of the system for the control circuit based on the measured electric magnitude measured and on the estimated set of electric and mechanical parameters. The control circuit is configured for actuating the electric motor from the at least one control parameter.

Abstract: A method for protecting a resonant linear compressor (14) including structural resonance frequencies (wE) and a motor that is fed by feed voltage (Va) that has amplitude (A) and a drive frequency (wA), both controlled according to the equation A.sin(wt). The protection method is configured so as to include the step of preventing feed to the motor at drive frequencies (wA) that have at least one harmonic coinciding tithe the structural resonance frequency (wE) of the resonant linear compressor (14). A protection system of a resonant linear compressor (14) includes an electronic control (30) configured to prevent feed to the motor at the drive frequencies (wA) that have at least one harmonic coinciding with the structural resonance frequency (wE) of the resonant linear compressor (14).

Abstract: The refrigeration compressor includes a cylinder block carrying a crankshaft and a stator of an electric motor, whose rotor is mounted to the crankshaft. An oil pump including: a tubular sleeve affixed to the crankshaft or to the rotor with a pump body internal to the tubular sleeve and connected to the cylinder block. A fixation rod is articulated to the cylinder block or stator and has a lower portion angularly and freely displaced orthogonally to the rotational axis and around which the lower end portion of the pump body is axially retained and slidably mounted, orthogonally and coplanar to the rotation axis of the rotor.

Abstract: The present invention refers to a linear compressor based on resonant oscillating mechanism, which is comprised by at least one resonant spring (2) at least one linear motor (3) composed of at least one fixed portion (31 ) and at least one movable portion (32), at least one piston (4) operatively associated with at least one rod (5) and at least one cylinder (6), all these elements being disposed within a housing (7), and the movable portion (32) of the linear motor (3) is physically associated with one end of the resonance spring (2) through a first coupling assembly and the rod (5) is physically associated with the opposite end of the resonance spring (2) through a second coupling assembly. The linear motor (3), the cylinder (6) and the piston (4) are physically arranged within a same end of the housing (7). The rod (5) is disposed within the resonant spring (2). The piston-cylinder assembly (4, 6) is capable of acting at the distal end to the coupling end between the rod (5) to the resonant spring (2).