275 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 invention discloses a continuous force measurement wind tunnel test method based on a differential pressure type pressure scanning valve, and belongs to the technical field of wind tunnel tests. In order to solve the problem that a test result can be introduced by a reference pressure error measured by reference pressure measurement equipment, the method comprises the steps that a differential pressure type pressure scanning valve is installed in an aircraft model, and a reference pressure channel and a last measurement channel of the differential pressure type pressure scanning valve are connected with a wind tunnel plenum chamber static pressure air pipeline; measuring the pressure at the same position with a wind tunnel static pressure sensor; calculating the range of the differential pressure type pressure scanning valve; performing a wind tunnel test, and synchronously acquiring the pressure of each surface pressure measuring hole, the wind tunnel total pressure and the wind tunnel plenum chamber static pressure of the aircraft model in different states; whether the difference value between the wind tunnel plenum chamber static pressure collected by the last channel of the differential pressure type pressure scanning valve and the wind tunnel plenum chamber static pressure collected by the wind tunnel static pressure sensor meets the measurement precision or not is judged based on the range of the differential pressure type pressure scanning valve; and performing test data processing on the effective test data, and calculating the coefficient of the wind tunnel flow field pressure hole.

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.

A patient interface may include: a plenum chamber at least partly defining a patient interface chamber, a seal-forming structure constructed and arranged to form a seal with a region of the patient's face, at least one conduit, at least one conduit connector configured to pneumatically connect the at least one conduit to the plenum chamber to provide a flow of air at a therapeutic pressure to the patient interface chamber for breathing by the patient, and a positioning and stabilising structure to provide a force to hold the seal-forming structure on the patient's head, the positioning and stabilising structure comprising at least one tie, wherein the at least one conduit connector includes an anti-asphyxia valve configured to allow the patient to breath from ambient through their mouth in the absence of a flow of pressurised air.

A head-worn air pump is provided which directs a stream of air to the goggles between the user and the transparent / translucent surface. The air pump can be attached to the rear portion of the goggle strap, or to an auxiliary or supplemental strap, so as to be behind the user and out of the line of sight of the user. One or more flexible tubes or hoses can be attached to a manifold or plenum receiving air under pressure from the pump, and lead from the rear of the head to one or both sides of the goggles. A rechargeable battery can power the air pump, and the pump can be switched on and off by a button on the pump housing, even by a user wearing gloves or hand coverings. The battery can be recharged by a conventional USB connection. The air can be supplied either at ambient temperature or refrigerated and / or heated, as desired in particular applications.

An air handling transport includes a base frame, and an air housing mounted to the base frame. The air housing includes a combustion air plenum on a longitudinal side of the air handling transport, the combustion air plenum outputting filtered combustion air. The transport further includes an exhaust stack mounted to the base frame for releasing combustion exhaust air. The exhaust stack is rotatable between the longitudinal side in an operation mode and an end side in a transportation mode. The exhaust stack includes a stack base having an exhaust plenum and a stack extension. The stack extension is housed within the stack base in the transportation mode and extends vertically by a predetermined vertical distance in the operation mode.

A patient interface may include a plenum chamber pressurisable to a therapeutic pressure; a seal-forming structure constructed and arranged to form a seal with a region of the patient's face; a positioning and stabilising structure to provide an elastic force to hold the seal-forming structure on the patient's head, the positioning and stabilising structure may include a tie; a vent structure; a decoupling structure configured to provide a fluid connection between the plenum chamber and an air circuit for the flow of air at the therapeutic pressure for breathing by the patient; and a frame having at least one tie attachment structure to receive the tie, wherein the frame is configured to be resiliently movable in any direction having at least one of a component parallel to the patient's sagittal plane, a component parallel to the patient's coronal plane, a component parallel to the patient's Frankfort horizontal plane.

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 gas turbine shroud assembly comprises a turbine shroud comprising shroud sectors (28) made of ceramic matrix composite material, a casing (22) made of metal alloy and a sectorized cooling device (52) comprising a plenum chamber (52B) delimited by an air diffuser (54) having holes for diffusing jets of cooling air over a radially outer surface (30B) of the turbine shroud. The assembly further comprises two metal alloy bushings (60) housed in two cavities (62) present at the circumferential ends of the air diffuser (54). Each of the bushings is in the form of a stepped cylinder with a base (60A), a lower face (601) of which bears on the radially outer surface (30B) of the turbine shroud, and a stud surmounting the base (60B). The stud is intended to receive a spring (58) compressed between an upper face (602) of the base and an upper face (620) of the cavity.

There is disclosed fluid distribution junctions and methods of assembly therefor. Flexible conduits connect to the junctions, and a consumable subsystem of the junction, conduits and receptacle caps or other connectors may be pre-assembled for ease of use. A subassembly is formed by coupling a plurality of flexible tubular conduits to a plurality of fluid connectors of a fluid junction, the fluid junction having an inner fluid plenum chamber leading to the fluid connectors. Two shells are sandwiched on opposite sides of the subassembly, the shells having mating concave receiving surfaces that together conform around each of the fluid connectors and clamp the tubular conduits onto the circular beads. Juxtaposed joint surfaces on each pair of mating concave receiving surfaces are bonded together such as with sonic welding to make the fluid distribution junction assembly.

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.

Disclosed are heat and moisture exchangers for use in treatment of sleep disordered breathing. In some examples the heat and moisture exchangers may be positioned within the plenum chamber of a patient interface, an air circuit connected to the patient interface or within a conduit of a positioning and stabilising structure. In examples the heat and moisture exchanger is configured to provide a pressure drop of less than 5 cm of H2O, when measured at a flow rate of 100 litres per minute, while maintaining a humidity level of inhaled air which is 10 mg / L or greater.

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.

A gas washout vent, and a patient interface with the gas washout vent, configured to allow patient-exhaled CO2 to flow to an exterior of the plenum chamber to minimise rebreathing of exhaled CO2 by the patient, the gas washout vent including at least one outlet orifice; a diffusing member at least partly covering the outlet orifice; and a blocking member having an air-impermeable material, the blocking member preventing gas exiting from the outlet orifice from flowing straight through the diffusing member.

The present technology relates to a positioning and stabilising structure for a patient interface, the positioning and stabilising structure comprising a conduit configured to permit delivery of pressurised air to the interior of the plenum chamber and a pad attached to the conduit. Other aspects of the present technology relate to a patient interface comprising a plenum chamber, a seal-forming structure configured to form a seal with a region of the patient's face surrounding an entrance to the patient's airways, and the positioning and stabilising structure comprising the conduit and the pad attached to the conduit.

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.