Abstract: A control method and a control system for a compressor in a refrigeration system, implements control logic based on the monitoring of parameters of the refrigeration system, where these parameters may include, for example, a previous load (Cant), a current load (Catu), a reference load (Cref), a measured cycle time (tcycle) and a target time (ttarget).

Abstract: The present invention lies in the fields of chemistry and materials engineering. More specifically, the present invention describes a process of heat treatment of polymeric precursors including as active phases particle charge or a mixture of active phases with inert phases called “fillers”. It is also described a surface including ceramic polymer obtained by said process. The volumetric positive variation resulting from the formation of new phases, which for their formation, incorporate atoms from the gaseous phase, contributes to a minor shrinkage of the composition during the heat treatment process. The process of the present invention allows obtaining the desired phases in smaller treatment times and lower temperatures, when compared to a thermal treatment process as conventional pyrolysis (PC) due to the presence of highly reactive species, as for example atomic nitrogen produced by the dissociation of nitrogen molecules in the plasma environment.

Abstract: A control method for a refrigeration system (10), with the refrigeration system (10) including at least one compressor (1) associated with at least one pair of suction lines (L2, L3, . . . LN), with each of the suction lines (L2, L3, . . . LN) respectively associated with at least one refrigerated environment (C1, C2, . . . CN). The method includes generating a system equivalent (Seq) to the refrigeration system, with the equivalent system (Seq) comprising at least one control parameter (PC1, PC2, . . . PCN) associated with each of the refrigerated environments (C1, C2, . . . CN). A control system for a refrigeration system and a refrigeration appliance are also described.

Abstract: A method and system for identifying a failure in a compressor of a cooling system by implementation of a failure identification logic and a braking logic based on monitoring at least one of an electrical quantity and a mechanical quantity and comparing these quantities with compatible parameters and possible subsequent braking based on this comparison. A cooling system compressor, cooling system, and refrigerator are also disclosed.

Abstract: Is disclosed an electrical grounding assembly arrangement for reciprocating compressor capable of optimizing the assembly of the electrical grounding connection and allows a quick visual inspection of the same, while providing a saving of electrical conductors, which are nonexistent in light of the invention in question. For this purpose, the casing (of the frequency inverter, which is fixed to the external region of the compressor housing) includes an electrical grounding bus capable of receiving, on its external portion, a fixing metal element specially adapted to electrically connect the outer portion of the electrical grounding bus and the electrical grounding connection of the housing and, at the same time, mechanically fixing the casing to the reciprocating compressor housing by physically locking the external portion of the electrical grounding bus and the electrical grounding connection of the housing.

Abstract: The metallurgical composition comprises a main particulate metallic material, for example iron or nickel, and at least one alloy element for hardening the main metallic material, which form a structural matrix; a particulate solid lubricant, such as graphite, hexagonal boron nitride or mixture thereof; and a particulate alloy element which is capable of forming, during the sintering of the composition conformed by compaction or by injection molding, a liquid phase, agglomerating the solid lubricant in discrete particles. The composition may comprise an alloy component to stabilize the alpha-iron matrix phase, during the sintering, in order to prevent the graphite solid lubricant from being solubilized in the iron. The invention further refers to the process for obtaining a self-lubricating sintered product.

Abstract: A constructive arrangement introduced in a housing for electronic circuit with power components is disclosed, in which a modular frame structure is provided, capable of being attached to the main structural frame and responsible for receiving the heat sink element. Said frame structure further includes holes bordered by contour walls, which optimize the application of high thermal conductivity coefficient resin between the electrical/electronic power components of the circuit board and the heat sink element.

Abstract: A method for actuating a semi-commanded valve that acts in synchronism with the compression cycles of an alternative compressor, and a system for actuating a multi-suction alternative compressor semi-commanded valve. The method for actuating the semi-controlled valve may involve detecting at least one compression peak in the course of at least one mechanical cycle of the alternative compressor and switching the functional status of at least an alternative compressor semi-commanded valve based on detecting at least one compression peak in the course of at least one mechanical cycle of the alternative compressor.

Abstract: A control method and a control system for a compressor in a refrigeration system, implements control logic based on the monitoring of parameters of the refrigeration system, where these parameters may include, for example, a previous load (Cant), a current load (Catu), a reference load (Cref), a measured cycle time (tcycle) and a target time (ttarget).

Abstract: The present invention relates to the technological field of compressors and components and/or devices for compressors. Problem to be solved: The current state of the art includes cooling system of dual evaporation and/or dual suction. On the solutions already existing, the selection of one among the two evaporation/suction lines is done by high complexity constructive mechanisms. Problem resolution: The invention in question aims to simplify the construction of a selection mean of one among two evaporation/suction lines. For so, is revealed a suction acoustic filter for reciprocating compressor which integrates an automatic valve coupled to the inlet way of the suction acoustic filter and a valve of a way is coupled to the inlet way of the suction acoustic filter, being said automatic valve and said valve of a way acting selectively reciprocating, where the valve opening of a way ends up opening the automatic valve.

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 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: A linear motor (1) including: a stator (2) defining at least an air gap area (10), at least one coil (3) associated to the stator (2), wherein a magnetic flow moves over at least one portion of the stator (2) and over a portion of the air gap area (10), wherein the linear motor (1) includes a magnetic body (5) disposed in the air gap area (10), wherein a movement parameter of the magnetic body (5) in the air gap area (10) causes movement of a piston (7) of the linear motor (1), wherein the linear motor (1) further includes: at least one magnetically permeable element (20, 20A, 20B) disposed in the air gap area (10) and adjacently to the magnetic body (5), wherein the movement parameter of the magnetic body (5) is cooperative to the movement parameter of the magnetically permeable element (20, 20A, 20B). A compressor, cooling equipment and stator (2) applicable in a linear motor are also described.

Abstract: A control method for a refrigeration system (10), with the refrigeration system (10) including at least one compressor (1) associated with at least one pair of suction lines (L2, L3, . . . LN), with each of the suction lines (L2, L3, . . . LN) respectively associated with at least one refrigerated environment (C1, C2, . . . CN). The method includes generating a system equivalent (Seq) to the refrigeration system, with the equivalent system (Seq) comprising at least one control parameter (PC1, PC2, . . . PCN) associated with each of the refrigerated environments (C1, C2, . . . CN). A control system for a refrigeration system and a refrigeration appliance are also described.

Abstract: The present invention relates to the technological field of acoustic filters applied to hermetic compressors. Problem to be solved: In hermetic compressors applied in cooling system, the work fluid sucked by the compression mechanism is hotter than the work fluid coming from the evaporator, and it is known that greater the temperature of this fluid, smaller is the efficiency of the compressor. Resolution of the problem: It is revealed a suction acoustic filter and a suction line including this acoustic filter capable of guarantee that the compression mechanism works mainly with the work fluid coming from the evaporator, which is colder than the work fluid accumulated inside the environment defined by the hermetic housing of compressor.

Abstract: Each lamination of the lamination stack comprises at least one assembly of coupling elements, said assembly comprising one insertion clamp, one receiving clamp and at least one receiving window, said coupling elements maintaining the same relative positioning from one another, the insertion clamp and the receiving clamp being defined by respective portions of the lamination axially projecting to the same side of the latter, each insertion clamp of a lamination being fitted, by interference, in the interior of a receiving clamp of an adjacent lamination, and each receiving clamp of a lamination being housed in the receiving window of at least one lamination of the stack.

Abstract: The present invention belongs to the technological field of the head fastening and its components to the block of a compressor, such as those used in cooling systems of household appliances. The head fastening arrangement of cooling compressor includes a head arranged by the cylinder of the cooling compressor and having a head lid; at least one supporting device also arranged by the cylinder; at least one element of union of the head lid to the supporting device, wherein the element of union is capable of transmitting force that presses the head lid and the supporting device against the cylinder.

Abstract: A method for determining the presence and arrangement of products arranged in a cooling system, the method including at least the steps of: capturing at least one piece of data on the product arranged in the cooling system from a piece of image data on the product, locally processing the piece of image data, sending the processed data to a remote system, checking whether the processed data relates to a known product, registering the product if same relates to an unknown product, updating the piece of information data on the product and establishing the product as a known product, analyzing the processed data on the product and generating at least one action determining the presence and arrangement of the product, and notifying a user of at least one of the actions determining the presence and arrangement of the product.

Abstract: A method for detecting an improper opening of a multiple suction reciprocating compressor suction valve of a reciprocating compressor includes monitoring, by an electronic processing core, a variable proportional to torque of an electrical engine that cooperates with a piston of the reciprocating compressor, the variable being measured by a sensor. A detection of the improper opening of the suction valve is made by a detection of at least one peak of the variable proportional to torque of the electrical engine during power of the electromagnetic field generator element.