Abstract: Disclosed is a cold storage container able to keep its contents cool for long periods without using electricity by using the phenomenon of adsorption. An adsorbent material placed in a conductive material above an insulated vacuum chamber adsorbs water vapor from the melting ice surrounding or above a cold chamber where contents are kept cold. This generates continuous evaporation which cools the water and therefore the contents of the cold chamber.

Abstract: A thermal management system for regulating dissipation of multiple thermal loads during operation of an apparatus includes a two-phase pump loop (TPPL), a vapor cycle system (VCS), and a liquid thermal energy storage (TES) system integrated together to maintain the apparatus at a constant temperature. The TPPL is configured to remove heat from the apparatus; the TES system is configured to provide thermal energy storage and temperature regulation; and the VCS is configured to transfer heat to the environment. The multiple thermal loads include a primary thermal load in the form of heat from the apparatus and a secondary thermal load in the form of at least one of a housekeeping thermal load or a power electronics thermal load. The primary and secondary loads are at different temperatures with each being independently selected to be transient or steady state.

Abstract: A cooling system is provided including a two-phase pump loop and a vapor compression system. The two-phase pump loop cools a thermal load with a first coolant. The vapor compression system is configured to circulate a second coolant. The vapor compression system includes a liquid vapor separator which separates the second coolant into a liquid portion and a gaseous portion. The liquid vapor separator is a thermal energy storage for the two-phase pump loop. A condenser of the two-phase pump loop transfers heat from the first coolant to the liquid portion of the second coolant in the liquid-vapor separator.

Abstract: A heat pump apparatus module for heating and/or cooling supply water, the heat pump apparatus module including: an apparatus housing at least partly provided with an outer wall; a heat pump arrangement including a condenser, an evaporator, and a compressor arranged between said condenser and said evaporator, said compressor configured to transfer a heat transferring medium from said evaporator to said condenser; wherein said heat pump apparatus module is divided into at least two separate compartments being: an air-flow compartment including a first heat pump component being either the condenser or the evaporator, and being configured to allow air to flow through said air-flow compartment, said first heat pump component configured to utilize said air for heating or cooling said heat transferring medium; a first closeable compartment being accessible through a first closeable opening.

Abstract: An apparatus and a method for detecting refrigerant leakage in an air source heat pump system. The method for detecting refrigerant leakage in an air source heat pump system includes the following steps in a cooling mode: S110: obtaining a running parameter of an air source heat pump system, wherein the running parameter at least includes a compressor rotational speed; S120: comparing the running parameter with a preset running parameter range; S130: updating a cumulative score when the running parameter falls within the preset running parameter range; and S140: when the cumulative score exceeds a predetermined cumulative score, determining that refrigerant leakage occurs, and when the cumulative score does not exceed the predetermined cumulative score, return to step S110.

Abstract: A device and a method for detecting a refrigerant leakage of an air source cooling-only system, wherein the detection method comprises S1: obtaining an operating parameter of an air-cooled cooling-only air source cooling-only system, wherein the operating parameter comprises at least a compressor speed or capacity; S2: comparing the operating parameter with a preset operating parameter interval; S3: updating a cumulative score when the operating parameter falls within the preset operating parameter interval; and S4: determining that a refrigerant leakage has occurred when the cumulative score exceeds a predefined cumulative score, and returning to step S1 when the cumulative score does not exceed the predefined cumulative score.

Abstract: A refrigeration cycle apparatus includes: an electric compressor that compresses and discharges refrigerant; a heating heat exchanger that heats a fluid by high pressure refrigerant discharged from the electric compressor as a heat source; a decompressor that decompresses the refrigerant flowing from the heating heat exchanger; an evaporator that evaporates the refrigerant decompressed by the decompressor; and a rotational speed controller that controls a rotational speed of the electric compressor. The rotational speed controller is configured to reduce an upper limit value of the rotational speed of the electric compressor in accordance with an increase in a pressure ratio of a high-pressure side refrigerant pressure of refrigerant within a range from a discharge port of the compressor to an inlet side of the decompressor to a low-pressure side refrigerant pressure of refrigerant within a range from an outlet side of the decompressor to a suction port of the compressor.

Abstract: A flow-type ice maker including substrate, an ice-making part configured by a refrigerant pipe connected to a refrigerator and through which a refrigerant circulates in an airtight manner, an ice-making rack supporting the refrigerant pipe and including an ice mold formed along an outer periphery of the refrigerant pipe, an ice-making water flow part joined to an upper part of the ice-making rack and allowing ice-making water to flow into the ice-making rack, and an ice-separating member to rotating around a direction parallel to the axis center of the refrigerant pipe to separate ice formed in the ice mold, and an ice-making water feed pipe feeding ice-making water to the ice-making water flow part. The refrigerant pipe has a curved part; and an outer periphery of a pipe made of any one of copper and aluminum is covered with stainless steel.

Abstract: A stand-alone ice making appliance is provided. The stand-alone ice making appliance may include an outer casing, a water tank, a pump, an ice maker, and a container. The outer casing may define an internal cavity that includes a primary opening. The water tank may define a storage volume to receive water. The pump may be in fluid communication with the storage volume of the water tank to actively flow water therefrom. The ice maker may in fluid communication with the storage volume of the water tank to receive water therefrom. The container may be disposed within the internal cavity. One or more insulated walls or sealing features may be further included herein.

Abstract: The present disclosure relates to a portable cold storage box having at least six identical square cold storage pieces capable of being put together to form a cuboid or cubic box. A through-hole is provided in the middle of each square cold storage piece. The periphery of each through-hole has one surface formed with a recess and an opposite surface formed with a step-shaped protrusion which can be snapped in a corresponding recess. Engageable tooth-shaped teeth are formed on opposite sides of the square cold storage pieces. A refrigerant is stored inside the square cold storage pieces in a sealed manner. The portable cold storage box of the present disclosure is advantageous in that it does not require a power source. It is easy to assemble, and after disassembling, the disassembled pieces can be quickly stacked up without being scattered around.

Abstract: A refrigerator appliance includes a cabinet that defines a chilled chamber including a fresh food portion a freezer portion. A door is rotatably mounted to the cabinet at a front portion of the chilled chamber. The door rotates between a closed position where the door sealingly encloses the fresh food portion and the freezer portion of the chilled chamber and an open position to permit access to the fresh food portion and the freezer portion of the chilled chamber. The door also includes an outer casing comprising a thermally insulated wall that defines a freezer chamber and a front panel rotatably mounted to the outer casing of the door such that the front panel of the door permits access to the freezer chamber.

Abstract: A transportation refrigeration system includes a refrigeration circuit that includes a compressor, a condenser, a first expansion device upstream of a first heat exchanger and a second expansion device upstream of a second heat exchanger. The first heat exchanger includes a first cooling capacity that is different from a second cooling capacity of the second heat exchanger.

Abstract: A transportation refrigeration system includes a refrigeration circuit that includes a compressor, a condenser, a first heat exchanger and a second heat exchanger. A first variable speed fan is associated with the first heat exchanger and a second variable speed fan is associated the second heat exchanger.

Abstract: A refrigerator includes an evaporator inclined in a left-right direction and a defrosting water tray provided below the evaporator to collect defrosting water, and having inclined surfaces corresponding to a shape of the evaporator.

Abstract: A refrigerator door and a manufacturing method of the same are disclosed. The refrigerator door includes a front panel that includes a first through hole and an input unit, a door liner, an upper cap decoration unit configured to seal an upper side of a first space defined between the front panel and the door liner, a frame attached to an inside of the front panel and defining a second space, a display assembly provided between the frame and the front panel and configured to emit light through the first through hole, and a touch sensor assembly provided between the frame and the front panel, the touch sensor assembly being fixed to a rear of the front panel at a position that corresponds to a location of the input unit. The upper cap decoration unit includes a communication hole for communicating with the second space and includes a cap cover.

Abstract: This invention relates to refrigerators, and more particularly to a refrigerator in which a vacuum space is formed between an outer case and an inner case of a body thereof for enhancing a heat insulating function. The refrigerator includes a body having a storage space for storing a predetermined storage object, wherein the body includes an inner case having the storage space, an outer case having an inside surface spaced a predetermined gap from an outside surface of the inner case to house the inner case, and a vacuum space provided between the inner case and the outer case sealed to maintain a vacuum state for heat insulating between the inner case and the outer case.

Abstract: The present invention comprises a vacuum insulation body comprising a vacuum-tight covering that surrounds an evacuated region, wherein a core material is arranged in the evacuated region, wherein the covering has an outer region and an inner region at least partially surrounded by the outer region, wherein the inner region and the outer region are formed by a common film bag and wherein the inner region is formed by inverting the film bag.

Abstract: The present invention relates to a cooling device comprising a body that has a liner and an outer case comprising a back wall made of a semi-rigid papery material such as a paperboard or a cardboard. The liner and the outer case define between them an intermediate volume filled with an insulation material, such as for instance polyurethane foam.

Abstract: A cooler includes a chest portion and a lid. The chest portion defines a cavity within the chest portion. The lid is also formed of molded plastic and is attached via a hinge along an edge of an opening of the chest portion. The opening of the chest portion is also an opening of the cavity. The cooler assembly also includes a pair of handle assemblies attached to the chest portion on opposite sides. An insertable bracket is configured to hold a handle of a handle assembly in an extended position, extending away from the side of the chest portion at substantially a right angle to the side of the chest portion. The bracket is further configured to retain and hold a panel along a side edge of the opening of the chest portion, and with the panel resting against the extended handle.

Abstract: A household electrical appliance of the embodiment includes: a peripheral camera that records the periphery of a household electrical appliance main body; control means that controls operation of the peripheral camera; and human detection means that detects human presence. When human presence is detected by the human detection means, the control means activates the peripheral camera.

Abstract: The present invention relates to a smart repository that can be used as a refrigerator or the like, the smart repository being characterized by comprising: a repository body having a door installed in an entrance/exit formed in a side surface thereof, the repository body containing an outer column that faces the entrance/exit and an inner column that communicates with the outer column through the upper and lower end portions thereof; multiple storing boxes provided to be contained and stacked inside the outer and inner columns; a plurality of vertical driving devices installed on the outer and inner columns, respectively, and driven so as to lift/lower the multiple storing boxes; an imaging portion comprising a plurality of push means for moving a box on the upper end portion of the inner column toward the outer column and moving a box on the lower end portion of the outer column toward the inner column, the imaging portion being configured to take an image of a to-be-stored object introduced through the door

Abstract: A household refrigeration appliance has a heat-insulated body with an inner container, which delimits a coolable interior provided for storing foodstuffs, a refrigeration device for cooling the coolable interior, a door leaf for closing the coolable interior and interior lighting for the at least partial illumination of the coolable interior. The coolable interior is defined by two side walls and one rear wall of which the surfaces facing the coolable interior are formed by the inner container. The interior lighting has an at least semitransparent cover, a planar light guide with a first surface facing the inner container and a second surface facing the cover and at least one lighting device, which couples its light into the planar light guide so that the planar light guide is able to decouple the light from its second surface.

Abstract: A refrigerator is provided. The refrigerator may include a main body having a storage compartment, a first door rotatably installed at a first side of the main body to open and close a first portion of the storage compartment, and a second door rotatably installed at a second side of the main body to open and close a second portion of the storage compartment. A first camera may be installed at the first door to take a picture of an interior of the first storage compartment during rotation of the first door, and a second camera may be installed at the second door to take a picture of the interior of the first storage compartment during rotation of the second door. A controller may combine plural pictures taken by the first camera and the second camera into a single corrected image of a region of the first compartment spanning from the first door to the second door.

Abstract: A method and a fiber-treatment system dry wet or damp fibers. A fiber mat (13) including wet or damp fibers is formed on a treatment band (31) which is moved in a conveying direction (x). An air flow (36, 36a) composed of heated drying air is generated in the fiber dryer (30). The heated drying air is guided in an upward direction through the treatment band and the fibers contained in the fibre mat (13, 14) are loosened and dried. Linters (16) possibly produced by any moving fibers are captured by a filter band (32) arranged above the treatment band, which is also moved in the conveying direction (x). At the outlet of the fiber dryer, the fibers are detached from a support (17) formed on the filter band, in particular when guiding the detached fibers back towards the dried fibers guided to the treatment band (31, 31c).

Abstract: A drying system and a drying method for a cleaning solution on a mask are disclosed. The drying system includes: a drying chamber having a first side wall and a second side wall arranged opposite to the first side wall; a plurality of first air knives on the first side wall and the second side wall for air-drying a cleaned mask; and a separation device for allowing a mask strip and a supporting and shielding strip to move away from each other at a spatial intersection region to increase a spacing between the mask strip and the supporting and shielding strip at the spatial intersection region, when the plurality of first air knives are air-drying the cleaned mask.

Abstract: A plant for drying objects which release volatile substances may include: a drying tunnel; a conveying system configured to convey the objects through the drying tunnel; a plurality of sensors arranged along the drying tunnel; and/or a plurality of air exchange units. The sensors may be configured to measure a concentration of the volatile substances along the drying tunnel. The air exchange units may be controlled by the sensors to keep the concentration of the volatile substances in the drying tunnel below a pre-established value. A method for keeping volatile substances below a pre-established value within a plant for drying objects may include: measuring with sensors concentration of the volatile substances at points along the drying tunnel; and/or operating air exchange units, according to the concentration of the volatile substances measured by the sensors, to keep the concentration of the volatile substances in the drying tunnel below the pre-established value.

Abstract: A device for controlling the temperature of, and in particular for drying, objects, in particular vehicle bodies, having a housing which integrates a temperature-control chamber that includes at least one air outlet and at least one air inlet. The temperature-control chamber is assigned at least one heating unit in which it is possible to generate a hot primary gas flow and to which it is possible to supply, from the air outlet, air that is to be heated. The heating unit includes a heat exchanger device into which the hot primary gas can be guided and in which it is possible to heat air from the temperature-control chamber using hot primary gas, which air can be supplied, as heated recirculation air, in a circuit via the at least one air inlet back to the temperature-control chamber. The heating unit includes at least a first and a second flow outlet via which heated recirculation air leaves the heating unit.

Abstract: The invention relates to a dental furnace, in particular a high-temperature dental furnace for oxide ceramics such as zirconium dioxide with sintering temperatures of between 1350° C. and 1650° C., having heating elements (14, 16) which are intended to give off heating energy to a firing chamber (12) in the dental furnace (10). The heating elements (14, 16) are configured as electrical resistance heating elements and supported below the firing chamber (12) each by means of at least one heating element support foot (18). The heating elements (14, 16) extend vertically to the top starting from the heating element support feet (18) and at the top, end in an arch (46), in particular in a semicircular arch or possibly in a pointed arch, without an upper lateral support, in particular not in the region of the arch (46).

Abstract: Method for handling a slag pot or ladle or pyro-metallurgical tools comprising the steps of spraying a mineral suspension onto a wall and putting into service of said slag pot or ladle or of the pyro-metallurgical tool, wherein said mineral suspension comprises calcium particles in suspension in an aqueous phase forming a calcium particle slurry containing a carbon hydrate at a content between 0.2 and 3%.

Abstract: A billet pushout system is provided for an electric induction billet heating line with long length revolute jointed pushout rods forming a non-jamming pushout rod assembly that is stored in a linear enclosure connected to an arcuate enclosure that deploys and retracts the pushout rod assembly to and from the electric induction billet heating line.

Abstract: Various embodiments of a waste heat recovery and conversion system are disclosed. In one exemplary embodiment, the waste heat recovery system may include a heat exchanger for transferring heat from a first fluid to a second fluid and a power conversion unit configured to convert the energy transferred from the first fluid to the second fluid into usable energy. The heat exchanger may include an outer duct defining an inlet and an outlet through which the first fluid flows in and out, respectively, of the outer duct. The heat exchanger may also include an inner duct disposed inside the outer duct and defining an inner channel inside the inner duct and an outer channel between an outer surface of the inner duct and an inner surface of the outer duct. The inner duct may define an internal flow channel through which the second fluid flows to exchange heat energy with the first fluid.

Abstract: A plate heat exchanger includes a plurality of main plates stacked to define a first cavity to direct a first fluid therethrough and a second cavity to direct a second fluid therethrough, the second fluid different from and kept separated from the first fluid, and an intermediate plate located in the second cavity between adjacent main plates, the second fluid directed across both sides of the intermediate plate.

Abstract: A loop heat pipe with fluid slug pipes includes: an evaporation chamber having a casing and a wick disposed therein; a return line having two ends connected to the casing; and a working fluid filling the evaporation chamber. A condensation segment is defined as a predetermined length of a body of the return line. A vapor segment is defined as a portion of the return line, extending from the condensation segment to the vapor end. A liquid segment is defined as another portion of the return line, extending from the condensation segment to the liquid end. At least one partition element is disposed inside the liquid segment to thereby divide the liquid segment into at least two fluid slug pipes not in communication with each other but in communication with the condensation segment and the casing. The fluid slug pipes each have a smaller diameter than the return line.

Abstract: Embodiments of the present disclosure are directed to using condensation from an evaporator of a cooling system of the vehicle to facilitate thermal management of systems or components of the vehicle. According to one embodiment, a vehicle can comprise a cooling system evaporator and a condensation water collection system disposed in proximity to the cooling system evaporator. The condensation water collection system can be adapted to collect and accumulate condensed water from the cooling system evaporator. The vehicle can further comprise a heat exchange and one or more spray nozzles disposed proximate to the heat exchanger. The spray nozzles can be adapted to dispense a mist of water obtained from the water accumulated by the condensation water collection system onto the heat exchanger.

Abstract: A two-phase pump loop (TPPL) for dissipating a thermal load during operation of an apparatus includes a coolant, a vapor/liquid receiver, a pump, an evaporator, a condenser, a valve (V1) configured to regulate a pressure at an outlet of the condenser; a valve (V2) having a control set point set equivalent to a low pressure (PL) measured in the vapor/liquid receiver; and a controller configured to control the set points of V1 and V2. The TPPL is configured to cool the thermal load with tight control of the temperature of the coolant that is cooling the apparatus. The TPPL may be combined with a vapor cycle system (VCS) to provide a thermal management system with the VCS being configured to use the same or different coolant than the TPPL.

Abstract: There are herein described energy storage systems. More particularly there are provided thermal energy storage systems comprising battery assemblies containing phase change materials and a monitoring system therefor. In addition there are provided thermal stores comprising battery assemblies having integral control means for management of the thermal energy provided by the battery assembly.

Abstract: A header for a heat exchanger includes a first and a second cylindrical fluid manifold extending in parallel. Each of the first and second manifolds have tube slots that extend through an arcuate wall section of the manifold. A thickened wall section of the header having a generally triangular wall section is bounded by the first and second fluid manifolds and by a planar outer surface of the header. An aperture extends through the thickened wall section to provide a fluid communication pathway between the first and second cylindrical fluid manifolds.

Abstract: Presently disclosed self-regulating thermal insulation may include one or more thermal actuators that may expand and contract in response to changes in temperature adjacent the thermal insulation, thereby automatically changing the thermal resistance of the thermal insulation. In this manner, a self-regulating thermal insulation may be configured to locally adjust in response to local changes in temperature of a part being insulated, for example, during curing or some other manufacturing process. Such self-regulating thermal insulation may be configured to respond to temperature changes without feedback control systems, power, or human intervention.

Abstract: Passive radiative cooling structures and apparatus manufactured with such cooling structures conserve energy needs. A flexible film transparent to visible light incorporates particles at a volume percentage larger than 25% so as to absorb and emit infrared radiation at wavelengths where Earth's atmosphere is transparent. Another film transparent to visible light is thin and flexible and configured to absorb and emit infrared radiation at wavelengths where Earth's atmosphere is transparent, wherein etchings or depositions are present on one or both surfaces. A high efficiency cooling structure has an emissive layer sandwiched between a waveguide layer and a thermal conductive layer. A solar cell panel is covered by a transparent passive radiative cooling film. A container housing an active cooling unit incorporates passive radiative cooling structures on one or more exterior surfaces.

Abstract: A thermal abnormality detection system includes: a first heat dissipation system having a first temperature sensor for measuring an actual temperature of the first heat dissipation system; a second heat dissipation system having a second temperature sensor for measuring an actual temperature of the second heat dissipation system. Assuming that a difference between the actual temperature of the first heat dissipation system and an upper limit temperature of the first heat dissipation system is d1, and a difference between the actual temperature of the second heat dissipation system and an upper limit temperature of the second heat dissipation system is d2, when a value of d1?d2 is greater than an error threshold value Error1_level, the first heat dissipation system is determined to be abnormal, and when the value of d1?d2 is less than an error threshold value Error2_level, the second heat dissipation system is determined to be abnormal.

Abstract: A core-in-shell heat exchanger, a method of fabricating the core-in-shell heat exchanger, and a method of exchanging heat in a core-in-shell heat exchanger disposed on a slosh-inducing moving platform are described. The method of exchanging heat includes introducing a shell-side fluid into a shell of the core-in-shell heat exchanger and introducing a fluid to be cooled into each of one or more cores of the core-in-shell heat exchanger, the one or more cores being arranged along an axial length of the shell with a plurality of baffles disposed on either side of the one or more cores along the axial length of the shell to reduce slosh of the shell-side fluid. The method also includes draining excess shell-side fluid using a plurality of drains, at least two of the plurality of drains being disposed on opposite sides of one of the plurality of baffles.

Abstract: A cross-jet nozzle includes a rotor body, in which several channels are recessed or formed running from a nozzle tip in the direction of a stator body, in which at least two front jet nozzles are positioned in the rotor body through at least two front jet channels and oriented so that front jets of a pressurized medium emerging from the front jet channels intersect outside of the rotor body and the rotor body can be mounted to rotate around its longitudinal axis on the stator body, which can be connected to a high-pressure line connection, is introduced safely parallel into tubes by a drive unit of a lance device. The nozzle tip is provided with an outer surface so that the surface is configured convexly arched, dome-like and free of edges and the nozzle tip is formed mirror-symmetric with the longitudinal axis in profile.

Abstract: A firearm and related methods and components are disclosed. The firearm has a chassis, a stock portion coupled to the chassis, and a pair of interchangeable plates removably coupled to the chassis. Each of the pair of interchangeable plates is attachable to the chassis at a first location and a second location opposing the first location. A first one of the pair of interchangeable plates has a recess for receiving a portion of a bolt handle. A second one of the pair of interchangeable plates has a firearm tool interface.

Abstract: Described herein are side charging assemblies, side charging upper receiver assemblies, and/or upper receiver bodies for an AR style firearm and AR style firearms comprising the assemblies and/or bodies described herein.

Abstract: The method for tracking and monitoring firearms provides a global positioning system (GPS)-enabled firearm ammunition magazine for all firearm types. A standard magazine is internally fitted with a GPS tracking unit, making the magazine look like any other firearm ammunition magazine. The GPS-enabled firearm ammunition magazine provides the information necessary for its recovery in the event of theft, misplacement, or other loss. GPS data is sent to at least one remote server, where it is recorded and processed. The remote server can send signals back to the magazine so that a mechanical securing mechanism integrated into the firearm magazine can actuate, preventing bullets from entering the firearm chamber. An application programming interface enables integration of the present invention with existing security cameras, thus allowing the remote servers to access and archive relevant video footage of an equipped firearm magazine.

Abstract: An apparatus and method for creating the apparatus that holds a bolt open after a last round is fired from a magazine is disclosed. A lower receiver may include at least two cavities. A transfer bar may be configured to fit into a first cavity of the at least two cavities. A hold down may be configured to fit into a second cavity of the at least two cavities. At least a portion of the hold down may be configured to overlap with at least a portion of the transfer bar to hold the transfer bar in place. The transfer bar, when a final round is fired from a magazine in the lower receiver, may be pushed up by a bump in the magazine to transfer upward movement to the transfer bar that catches a bolt and holds the bolt open until activation of a release button.

Abstract: A firearm suppressor assembly that includes a quick connect mounting methodology that allows the suppressor to be quickly and repeatably associated with the muzzle end of a firearm. In a preferred embodiment, the mounting methodology includes a plurality of lobes that facilitate less than 90 degree rotation between the muzzle of the firearm and the suppressor and provide a tactile indication of a secured engagement therebetween.

Abstract: A recoil managed disruptor includes a disruptor device having a barrel from which a slug of material is fired. A piston is mechanically coupled to the disruptor device. A housing which supports the disruptor on a positioning device includes a deformable recoil absorber (DRA) constraint. The DRA constraint is configured to receive a sacrificial DRA structure comprised of a semi-rigid material. The piston is responsive to a recoil force produced when the disruptor device is fired to travel along an axial length of the housing and permanently deform the DRA structure within the DRA constraint.

Abstract: A compensator device for manipulating and reducing the effects of firearm muzzle lift and a lower receiver for manipulating environmental effects on firearms and firearm operators.

Abstract: A muzzle brake for weapons includes a body (1) that is joined to the firearm (6) and that incorporates two recesses (1a, 1b) on its surface, where a plurality of holes (1c) are located; and in which on each of the recesses (1a, 1b) a body (2) is located, which incorporates, in turn, a plurality of holes (2a) coinciding in number with the holes (1c) and located in the opposite direction in such a way that there is a reverse of gases coming from the firing of the projectile from the weapon (6).