Abstract: A control system for hermetic cooling compressor includes a reciprocating compressor (3) and an electronic control (2) for the reciprocating compressor (3). The electronic control (2) is configured for, after commanding the turning off of the reciprocating compressor (3), detecting whether the turn velocity (23) of the turning axle (10) is below a predefined velocity level, and then applying a braking torque (36) that causes deceleration of the turning axle (10) before completing the next turn of the turning axle (10), in case the turn velocity (23) detected is below the velocity level (34).

Abstract: A method for controlling and adjusting the refrigeration capacities of a refrigeration system equipped with a double suction compressor, the refrigeration system including first and second compartments to be refrigerated and including first and second evaporators respectively positioned in the first and second compartments. The double suction compressor is controlled to alternate its compression capacity with high-frequency between first and second refrigerant suction lines respectively associated with the first and second evaporators such that the first and second compartments are simultaneously cooled. The compression capacity of the compressor is applied to the first and second suction lines based upon respective first and second duty cycles that together account for 100 percent of the compression capacity of the compressor. First and second temperature sensors are associated with the first and second compartments and provide temperature values that are used to select the first and second duty cycles.

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 relates to a brushless type motor and to rotor for brushless type motor with surface magnets. The rotor having an axial extension in which is inserted the shaft having the axial extension a height greater than that of the stator package, and the axial extension also characterized by having a radial extension into the lower base of the magnets, the radial extension having an external radius greater than or equal to the radius of the axial extension, but less than or equal to the external radius of the magnets. The axial and radial extensions being used for fixing the shaft, increasing the moment of inertia, increasing the magnetic flux generated by the magnets and also serving as a base for the assembly of the magnets.

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: A communication system includes functional modules, wherein at least one functional module includes a processing unit and at least one functional module includes a controllable device. The modules are powered by an alternating voltage at a frequency and are electrically associated by a power bus and a communication bus. The processing unit provides a communication signal to the communication bus for interaction between the functional modules through a plurality of sets of high frequency pulses arranged to repeat at a predetermined repetition frequency substantially greater than the frequency of the voltage, and each set of high frequency pulses forms an information pulse corresponding to at least one bit of a communication protocol. Filters are disposed between an electric energy power supply and the functional modules for permitting the passage only of frequency components of an electric signal greater than the voltage frequency of the electric energy power supply.

Abstract: An electronic switch control system, including an alternating voltage source, an electronic switch, a load, a control circuit, an alternating voltage source being electrically associated to a first conduction terminal of the electronic switch, a second conduction terminal of the electronic switch being associable to a load, the load being associated to a second power terminal. The control circuit includes first, second and third electric potential terminals, and is arranged to command the electronic switch by way of a trigger terminal. The control circuit is electrically associated to a voltage regulator block that is electrically associable to the electronic switch by way of first and third electric contact terminals and first and second conduction terminals respectively, the voltage regulator block being arranged to provide a minimum electrical voltage (Vmin) to run the control circuit in at least a conduction instant of the electronic switch.

Abstract: The present invention relates to a system for programming domestic appliances and a method for programming assembly-line programmable domestic appliances, especially a system wherein programming occurs without the physical connection between a transmission unit and a reprogrammable processor present in a processing unit integrated into the domestic appliance. The system for programming domestic appliances comprises a remote programming unit (UR) and a reprogrammable processor (PR) present in a processing unit (UP) integrated into the domestic appliance (EN), the remote programming unit (UR) being provided with a data transmission device (TUR) and the reprogrammable processor (PR) present in a processing unit (UP) being provided with a data receiving device (RUP), and the data transmission and reception devices (TUR, RUP) are based on a magnetic field.

Abstract: The present invention relates to a control system for hermetic cooling compressor, which includes a reciprocating compressor (3) and an electronic control (2) for the reciprocating compressor (3), the electronic control (2) being configured for, after commanding the turning off of the reciprocating compressor (3), detecting whether the turn velocity (23) of the turning axle (10) is below a predefined velocity level, and then applying a braking torque (36) that causes deceleration of the turning axle (10) before completing the next turn of the turning axle (10), in case the turn velocity (23) detected is below the velocity level (34).

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 is applied to a tribological pair comprising two metal pieces, a first of them having a movable contact surface which provides friction in relation to a respective contact surface of a second of said metal pieces. According to the present invention, the first metal piece has its contact surface defined by a coating formed: by a first surface layer in a material harder than that of the first metal piece; and by a second surface layer, disposed onto the first surface layer and in a material defining a coating which reduces the chemical affinity in relation to the contact surface of the second metal piece of the tribological pair, in order to provide, to said tribological pair, a lower friction coefficient in relation to the tribological pair deprived of said coating.

Abstract: The present invention relates to a control system, a method and arrangement for motors and motor-compressors, designed for operation in a wide voltage range of the feed network. The control system, method and arrangement for motors and motor-compressors basically consist in associating an electronic control (10) capable of regulating the voltage supplied to a motor with windings and a magnetic core suitably dimensioned so as to fully meet the start and operation torques in the minimum voltage expected for the electric energy network, the electronic control (10) incorporating the method of limiting the effective value on the motor windings so as to keep its capability of meeting the minimum torques specified for the application, independently of the rise in the network voltage to values higher than the minimum voltage expected for the network.

Abstract: A communication system, for application to electronic apparatuses, which is immune to a potential occurrence of failure in the electric energy power source to which the electronic apparatus is connected. The system comprises functional modules (1, 2, 3, 4), wherein at least one functional module (1, 2, 3, 4) has a processing unit (5) and at least one functional module (1, 2, 3, 4) has a controllable device (6, 7) controllable by the processing unit (5). These functional modules (1, 2, 3, 4) are electrically powered by an alternating voltage at a predetermined frequency provided by an electric energy power supply (8). The functional modules (1, 2, 3, 4) are electrically and operatively associated in parallel to each other by means of a power bus (9, 10) and a communication bus (11, 10), respectively.

Abstract: An electronic switch control system, including an alternating voltage source, an electronic switch, a load, a control circuit, an alternating voltage source being electrically associated to a first conduction terminal of the electronic switch, a second conduction terminal of the electronic switch being associable to a load, the load being associated to a second power terminal. The control circuit includes first, second and third electric potential terminals, and is arranged to command the electronic switch by way of a trigger terminal. The control circuit is electrically associated to a voltage regulator block that is electrically associable to the electronic switch by way of first and third electric contact terminals and first and second conduction terminals respectively, the voltage regulator block being arranged to provide a minimum electrical voltage (Vmin) to run the control circuit in at least a conduction instant of the electronic switch.

Abstract: A system and a process for energizing loads through a control unit, said loads being energized from a power network, said system comprising: connecting elements, each including a processing unit operatively connected to a respective power switch so as to lead the latter to opening and closing conditions, de-energizing and energizing a respective adjacent load that is electrically coupled to the connecting element; a pair of electrical conductors connected to a power network for energizing the loads and which are disposed so as to define an energizing means which is common to the connecting elements and to the control unit; and a signal conductor not galvanically isolated from the power network and which is common to the processing units and to the control unit, connecting them so as to allow the control unit to instruct, through the processing units and through coded electrical signals, the opening and closing of each respective power switch.

Abstract: The present invention relates to a control system for protection against breakage of the lubricating-oil film in the bearings of hermetic compressors, as well as to a control method that has the objective of guaranteeing that a variable-capacity compressor should be maintained above a minimum rotation in order to prevent the oil film close to the respective bearing from breaking. One of the forms of achieving the objectives of the present invention is by means of a control system for protection against break of the lubricating-oil film in bearings of hermetic compressors, a microprocessor (10) actuating a set of switches (SW2M) selectively, so as to generate a rotation at the motor-compressor assembly (20, 21), the compressor (21) having a minimum rotation (RPMmin) of the compressor (21) so that the oil film will not be broken.

Abstract: The present invention relates to a control system, a method and arrangement for motors and motor-compressors, designed for operation in a wide voltage range of the feed network. The control system, method and arrangement for motors and motor-compressors basically consist in associating an electronic control (10) capable of regulating the voltage supplied to a motor with windings and a magnetic core suitably dimensioned so as to fully meet the start and operation torques in the minimum voltage expected for the electric energy network, the electronic control (10) incorporating the method of limiting the effective value on the motor windings so as to keep its capability of meeting the minimum torques specified for the application, independently of the rise in the network voltage to values higher than the minimum voltage expected for the network.

Abstract: The present invention relates to a system and a method of diagnosis for a refrigeration system and/or household appliance which, based on a multiplicity of physical magnitudes detected, determine and inform the operating condition of said refrigeration system and/or of its components. Basically, the magnitudes are divided into two groups, namely: (i) those from which spectral signatures will be generated (magnitudes relating to mechanical vibrations); and (ii) magnitudes from which spectral signatures will not be generated. The spectral signatures are compared with the standard signatures, and the diagnosis is provided Digital based on this comparison. After the operating condition has been diagnosed, it is stored in a database, and a processing record of the system operation is updated.

Abstract: The present invention relates to a system for programming domestic appliances and a method for programming assembly-line programmable domestic appliances, especially a system wherein programming occurs without the physical connection between a transmission unit and a reprogrammable processor present in a processing unit integrated into the domestic appliance. The system for programming domestic appliances comprises a remote programming unit (UR) and a reprogrammable processor (PR) present in a processing unit (UP) integrated into the domestic appliance (EN), the remote programming unit (UR) being provided with a data transmission device (TUR) and the reprogrammable processor (PR) present in a processing unit (UP) being provided with a data receiving device (RUP), and the data transmission and reception devices (TUR, RUP) are based on a magnetic field.

Abstract: An electronic device is described, which comprises an envelope comprising a closed chamber and a printed-circuit board. The printed-circuit board is positioned in the chamber and defines a dissipation chamber. The printed-circuit board comprises at least one electronic device positioned in the dissipation chamber. The dissipation chamber comprises a filler simultaneously in contact with the electronic component, the printed-circuit board and a dissipation film.