196 results about "Plenum chamber" patented technology

A combustor includes a combustion liner that defines a combustion chamber and an outer sleeve spaced apart from the combustion liner, such that an annulus is defined between the combustion liner and the outer sleeve. The combustor further includes a fuel injection assembly having a boss coupled to at least one of the combustion liner and the outer sleeve. The boss includes an inner flange coupled to the combustion liner, an outer flange, and a body extending between the outer flange and the inner flange. The boss defines a cooling circuit having a post-impingement plenum defined in the inner flange between an inner wall of the inner flange and an impingement plate in cooling proximity to the inner wall; and a plurality of film cooling channels that are defined in the inner flange and fluidly couple the post-impingement plenum to the combustion chamber.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention provides a weak tunnel wall interference device for a 1-meter transonic wind tunnel airfoil test, and belongs to the technical field of wind tunnel tests. The invention aims to weaken the interference effect of upper and lower tunnel walls during transonic wind tunnel airfoil test. A test section and a wind tunnel body are arranged in a plenum chamber, the wind tunnel body is located on the outlet side of the test section, and the test section comprises left and right side walls, upper and lower ventilation walls, a hinge seat, an adjusting seat, left and right frames and upper and lower frames; the side walls are solid walls and are mounted on the left and right frames, the incoming flow sides of the ventilation walls are connected with the hinge seats, and the outgoing flow sides are connected with the adjusting seats; the four injection seam adjusting pieces are arranged on the outer sides of the left and right side walls and the upper and lower ventilation walls, the outflow side is hinged to the wind tunnel body, the inflow side is connected with a motor driving pull rod on the plenum chamber, and the injection seam adjusting pieces make contact with the outer side lines of the left and right side walls and the upper and lower ventilation walls when closed. The method can effectively weaken the interference effect of the upper and lower tunnel walls during the transonic wind tunnel airfoil test, and improves the data accuracy during the airfoil test of the transonic wind tunnel.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention relates to a hardware immersion cooling system (1) comprising a tank (2). The tank (2) is configured to receive a plurality of server modules (10) and contain a cooling fluid. The hardware immersion cooling system (1) comprises a flow distribution system (4) configured to distribute the cooling fluid through the tank (2). The flow distribution system (4) comprises a plurality of flow bars (5) extending along the bottom of the tank (2). The flow distribution system (4) comprises a tank manifold (20) which is configured to distribute cooling fluid over a set of flow bars (5), wherein the tank manifold (20) comprises a plenum (21).

An assembly is provided for a turbine engine. This assembly includes an engine structure, and the engine structure includes a plenum, a reverse flow combustor, a nozzle structure and a cooling circuit. The reverse flow combustor is disposed in the plenum and includes a combustion chamber. The nozzle structure is arranged at an outlet from the combustion chamber. The nozzle structure includes a first platform, a second platform and a plurality of vanes arranged circumferentially about an axis. The vanes extend across the flowpath from the first platform to the second platform. The cooling circuit extends in the first platform and between a circuit inlet into the cooling circuit and a circuit outlet from the cooling circuit. The circuit inlet is fluidly coupled with and disposed along the plenum. The circuit outlet is fluidly coupled with and disposed along the flowpath.

The utility model discloses a reverse jet flow system structure for a wind tunnel test. The reverse jet flow system structure comprises a tail jet pipe, a gas collection chamber, a pull rod, a high-pressure pipeline, a ventilation support rod and a force measurement balance. The reverse jet flow system is fixedly connected with a wind tunnel through a supporting rod, a gas collection chamber is connected with a ventilation supporting rod through a pull rod and a high-pressure pipeline, a balance is connected with the ventilation supporting rod through cone matching, and finally a tail jet pipe and a test model are installed to achieve installation and reverse jet flow of the model in the wind tunnel. According to the utility model, the balance is arranged on one side of the ventilation support rod in an offset manner, and the jet flow gas collection chamber is moved forwards, so that the axial force of the test model is measured while the reverse jet flow is realized.

A trash can assembly includes a trash can having an interior space and a vacuum assembly. The vacuum assembly comprises a top surface forming a false bottom, an elevated portion with a vacuum vent, a liquid gutter surrounding the elevated portion, and a plenum housing a vacuum motor. The vacuum motor is configured to draw air through the vacuum vent into the plenum, causing a trash bag to conform to the interior surface of the trash can. The assembly may include a controller, power source, charger port, seal indicator, status indicator, wireless control switch, and may operate in reverse mode for bag inflation or demonstration. The trash can may nest into an outer container formed of a rigid material including plastics or metals suitable for consumer waste receptacles, and connect electrically via detachable connectors. The system enhances bag capacity, aesthetics, and operational convenience.

The present invention provides a mixing device for combined power high-altitude simulation testing, which is arranged inside a plenum chamber. The mixing device includes multiple nozzles, a front baffle and a rear baffle arranged at both ends of the nozzle, the front baffle and the rear baffle being connected to the cylinder support via a support seat, and a three-layer heat insulation plate provided inside the nozzle. The nozzle is slidably connected to the front baffle and fixedly connected to the rear baffle. The mixing device provided by the present invention is arranged inside the plenum chamber, eliminating the air supply pipeline from the outlet of the mixing device to the plenum chamber section in the traditional solution, greatly reducing the thermal inertia of the temperature control system of the air intake equipment, reducing the temperature loss caused by the development of the air flow along the process and the heat exchange of the pipe wall, shortening the time required to obtain the temperature conditions required for the test state through mixing, and improving the efficiency of entering the test state.

The invention relates to the technical field of ventilation plenum chamber welding, in particular to an intelligent welding device and system for a box body of a ventilation plenum chamber. A multi-axis mechanical arm is installed at the support, a welding head is connected to the outer end of the multi-axis mechanical arm, a laser positioning device is installed at the welding head, a sliding base is slidably connected to the bottom guide rail in the extending direction of the support, a displacement mechanism is arranged on one side of the bottom guide rail, and a rotating motor is installed in the middle of the top end of the sliding base. The output end of the rotating motor is fixedly connected with a placing platform, and a positioning mechanism is mounted at the top of the placing platform; according to the laser positioning device, real-time identification and tracking of a welding seam are achieved, the positioning precision is within + / -0.1 mm, the defects of air holes, incomplete fusion and the like in traditional welding are overcome, the strict requirement of the ventilation plenum chamber for air tightness is met, and the welding efficiency is greatly improved.

A patient interface provides a flow of pressurized air from a connection port to a seal-forming structure around a patient's airway. The patient interface includes an inflation chamber and a seal-forming structure, wherein the seal-forming structure is mounted to a flange provided to the inflation chamber and is at least partially formed of a fabric layer. The inflation chamber comprises an incision which, in use, corresponds at least to a nasal region of a patient's face, where the fabric layer of the seal-forming structure covers the incision.

High pressure fuel pump, comprising: a piston (2) comprising a large diameter portion (2a) and a small diameter portion (2b); a pressurizing chamber (11) whose volume is increased or decreased by a reciprocating movement of the piston (2); a sealing portion (13) disposed on an outer peripheral side of the small diameter portion (2b) of the piston (2) and providing a seal between an upper space (7a) of the small diameter portion (2b) of the piston (2) and an outer space; and a regulating element (16) arranged between the sealing portion (13) and a lower surface (2c) of the large-diameter portion (2a) and regulating the movement of the large-diameter portion (2a) to a side opposite the pressurizing chamber (11), wherein the regulating element (16) comprises an end surface (16c) facing the lower surface (2c) of the large-diameter portion (2a), a gap portion (16e) is formed between an innermost peripheral portion of the end surface (16c) and the small-diameter portion (2b), and further, in addition to the gap portion (16e), a communication path (16d) is formed connecting an upper space (7a) of the end surface (16c) and a lower space (7b), characterized in that an inlet valve (30) which opens and closes a flow path is provided on an upstream side of the pressurizing chamber (11), and the upper space (7a) of the end face (16c) is communicated with a low-pressure space on an upstream side of the inlet valve (30), and the fuel moves back and forth between the low-pressure chamber and the upper chamber of the end face (16c) together with the reciprocating movement of the piston (2).

The invention relates to the construction industry and can be used in the field of creating suspended ceilings, and more particularly in the creation of frame and board-type structures. A mounting profile belonging to a set of profiles for creating profile structures, which comprises elements of a damping connection in the form of a mating part and a damper, is configured according to the claimed technical solution in the form of a one-piece structure having a mounting ledge and a plastering element which are connected to one another by a base, wherein the mounting ledge is provided with through-holes and with elements for attachment to a plenum chamber of a ventilation system. This addresses the problem of the hitherto limited range of means for creating wall-mounted joints for different architectural scenarios, and also expands the functional capabilities of wall-mounted joints through the use of flexible coupling with a damping connection.

To improve the uniformity of the plasma density in an ionization chamber.SOLUTION: An ion source 1 includes a vaporizer 100 that generates vapor from a solid source material, a first container 10 having a plenum chamber 20 fluidly connected to the vaporizer 100, and a second container 50 having an ionization chamber 50a fluidly connected to the plenum chamber 20, and the first container 10 having a first wall 20a to which the vaporizer 100 is connected and a second wall 20b opposite the first wall 20a, the second wall 20b having a slit 45 opening along the longitudinal direction of the plenum chamber 20, and the vapor is supplied from the plenum chamber 20 to the ionization chamber 50a through the slit 45.SELECTED DRAWING: Figure 2

A biosafety cabinet including a plenum and a divider positioned in the plenum. The divider divides the plenum into a supply section and an exhaust section. A blower is positioned adjacent the plenum and in fluid communication with the plenum. The blower is configured to simultaneously supply air to both the supply section and the exhaust section of the plenum. An exhaust filter is positioned between the exhaust section and an exhaust outlet. The air supplied to the exhaust section from the blower passes through the exhaust filter. A supply filter is positioned between the supply section and a work area. The air supplied to the supply section from the blower passes through the supply filter. An adjuster may be coupled to the divider to adjust a position of the divider in the plenum.

Release apparatus 200 for receiving an ocean alkalinity product 113-OUT from an Ocean Alkalinity Enhancement (OAE) system 100 (or other onshore or floating alkalinity source), and for releasing the alkalinity (base product, e.g., NaOH), e.g., contained in the ocean alkalinity product 113-OUT into an ocean 50 at a maximum safe delivery rate to facilitate atmospheric CO2 reduction and mitigate ocean acidification. Release apparatus 200 includes a diffuser 210 having plenum chamber 212 defining one or more exit ports 214, flow control mechanism 220 that controls a delivery (volumetric flow) rate of the ocean alkalinity product 113-OUT through the exit port(s) 214 into an outfall region 51-1R (i.e., an ocean region (volume of seawater) surrounding the diffuser 210), sensors 230 for measuring seawater parameters (e.g., one or more of ionic composition [hardness], turbidity, pH, alkalinity, DIC, temperature, salinity, current speed and / or direction) in the outfall region 51-1R, and a controller 180 configured to control an operating (actuation) state of the flow control device 220 (e.g., by way of generating and transmitting a flow control signal 183) in accordance with the measured seawater parameters (i.e., provided by way of sensor signals 182). Plenum chamber 212 is anchored or otherwise maintained at an outfall location 51-1 by securing structures 217 and is maintained at a constant depth D (e.g., a meter or two) below the ocean surface 50S by floating structures 215 with the exit ports 215 aimed toward the ocean surface.

A patient interface comprising a plenum chamber pressurisable to a therapeutic pressure, a seal-forming structure constructed and arranged to maintain said therapeutic pressure in the plenum chamber, a positioning and stabilising structure to provide a force to hold a seal-forming structure in a therapeutically effective position on a patient's head. The positioning and stabilising structure comprising at least one arm configured to be positioned adjacent to a cheek of the patient, and a strap removably received around the arm and configured to contact a posterior region of the patient's head. The strap comprising a first coupling having a mechanical connector that is configured to engage the arm and limit movement of the arm into and out of the cavity, a second coupling spaced apart from an outer surface of the first coupling, and a sleeve being folded over the second coupling and positioned between the first and second couplings.

The invention relates to the technical field of vehicle engineering, and provides a numerical wind tunnel construction method for digital vehicle simulation. The method comprises: constructing a numerical wind tunnel model; the numerical wind tunnel model at least comprises a stable section, a contraction section, a test section, a diffusion section and a plenum chamber; dividing the surface of the numerical wind tunnel model by adopting a preset grid technology; encrypted grid division is adopted in the sensitive area, and gradient grid division is adopted in the non-sensitive area; the sensitive area at least comprises a test section wall surface and a contraction section near-wall area; the non-sensitive area comprises a plenum chamber and a diffusion section; a three-level boundary layer suction control strategy is adopted, so that the current flow field parameters in the test section are kept stable in a preset range, and a high-precision simulation strategy is triggered; the high-precision simulation strategy is simulated based on a pre-configured simulation condition, and when a simulation result does not fall into a target range, a simulation regulation and control strategy is triggered. Compared with the prior art, the method has the advantages that computing resources are reduced, and simulation precision is improved.

A sampling device, portable or not, for separately quantifying the particulate and gaseous fractions of semi-volatile organic compounds present in the air, comprising an air flow inlet (4), an acceleration nozzle (5) connected to the air flow inlet (4), and a collection nozzle (6), the acceleration nozzle (5) and the collection nozzle (6) extending opposite each other around a common axis (X) and being spaced apart by a separation zone (7) of the air flow, said separation zone (7) being connected to a plenum (8), a main outlet (11) intended for sampling the particulate fraction and a first portion of the gaseous fraction being connected to the collection nozzle (6) and a secondary outlet (12) intended for sampling a second portion of the gaseous fraction being connected to the plenum (8).Furthermore, the plenum (8) comprises a homogenization disc (13) for the air flow speed and the collection nozzle (6) opening into said separation zone (7) at the center of said homogenization disc (13). Figure for abstract: Fig 2.

The hollow air return structure of the clean room enclosure system comprises a hollow air return wallboard, an air return channel is arranged in the hollow air return wallboard, an air inlet of the air return channel is formed in the lower end of the hollow air return wallboard, and an air outlet of the air return channel is formed in the lower end of the hollow air return wallboard. The return air guide plate is arranged in the return air channel and is close to the air inlet, the return air plenum chamber is fixedly connected with the upper end of the hollow return air wallboard, a mute air duct is arranged in the return air plenum chamber, and the mute air duct is communicated with the air outlet of the return air channel; according to the hollow air return structure of the enclosure system of the clean room, the hollow wallboard design is adopted, the air return channel is arranged in the wallboard, and the air return flow guide plate is matched, so that the air return amount in the clean room is effectively increased, the air return efficiency is improved, meanwhile, the air return plenum chamber is arranged at the air outlet of the air return channel, and the air return efficiency is improved. And the noise can be effectively reduced when airflow passes through the mute air duct.

A patient interface may include: a plenum chamber pressurisable to a therapeutic pressure; a seal-forming structure connected to the plenum chamber, the plenum chamber being constructed and arranged to seal with a region of the patients face; a positioning and stabilising structure configured to provide a force to hold the seal-forming structure in a therapeutically effective position on the patients head; a vent structure configured to allow a continuous flow of gases exhaled by the patient from an interior of the plenum chamber to ambient; and a material configured to adsorb water vapour from gases exhaled by the patient and desorb water vapour into the flow of air at the therapeutic pressure, the material being positioned within the plenum chamber.

A positioning and stabilising structure for a full-face mask of a patient interface comprises a superior strap portion, an inferior strap portion, and two anterior strap portions. Each anterior strap portion having a generally triangular surface with a first width and a second width that is less than the first width and disposed more anterior while in use. The superior strap portion and the inferior strap portion are each connected to or formed integrally with each anterior strap portion at a respective corner of the generally triangular surface. Each anterior strap portion is connected or connectable to a connection portion that engages the plenum chamber. The connection portion is releasably engageable from the plenum chamber. The superior strap portion and the inferior strap portion are joined to the anterior strap portions anterior to the patient's ears, when in use.

A patient interface is configured to deliver a flow of positive pressure respiratory gas to an entrance of a patients airways. The patient interface includes an elastomeric support wall forming at least part of a plenum chamber configured to receive the flow of positive pressure respiratory gas. The patient interface also includes an elastomeric support flange positioned at an end of the elastomeric support wall and extending radially inward from the support wall. The support flange has a flap portion at a central superior region of the support flange that extends further in the radially inward direction than the rest of the support flange. In addition, a foam cushion is mounted on the support flange. The foam cushion is configured to form a seal with the patients face and includes an attachment surface that is in contact with an outer surface of the support flange.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

A patient interface for treating a patient with a respiratory disorder includes: an RPT device including an electrically powered blower configured to generate pressurized breathable air; a user interface structure configured to engage against the patient's face, the user interface structure at least partially forming an inflation chamber, the inflation chamber configured to receive the pressurized breathable air; a head-mounted interface configured to substantially cover an eye of the patient; a flow generator housing at least partially enclosing the head mounted interface and the motorized blower and connected to the plenum, the flow generator housing including at least one air opening to receive ambient air for delivery to the RPT device; and a positioning and stabilizing structure configured to maintain the user interface structure in a therapeutically effective position.

A patient interface includes a seal-forming structure, a shell, and an AAV. The shell and the seal-forming structure form at least a portion of a plenum chamber pressurizable to a therapeutic pressure. The shell includes a first port into the plenum chamber, the first port configured to allow air to flow between the plenum chamber and ambient. The shell includes a passageway including a second port into the plenum chamber, the passageway configured to communicate with a flow of air at positive pressure. The AAV is provided to the shell and configured to regulate flow through the first port and the second port to (1) provide a flow path for pressurized air when pressure in the plenum chamber is above a predetermined magnitude and (2) provide a breathable flow path when pressure in the plenum chamber is below the predetermined magnitude or not delivered.