91 results about "Plenum chamber" patented technology

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.

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 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.

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.

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 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 nozzle (10) for providing a coolant fluid to a cutting edge of a metal cutting tool (1) and such a metal cutting tool (1), wherein the nozzle (10) comprises: - at least one internal inlet coolant channel (16 1i ; 16 2i ), - at least one internal outlet coolant channel (17 1i ; 17 2i ), wherein - the at least one internal inlet coolant channel (16 1i ; 16 2i ) is connected to a coolant inlet (18), and - the at least one internal outlet coolant channel (17 1i ; 17 2i ) is connected to a coolant outlet (19 1i ; 19 2i ) for guiding the coolant fluid to the cutting edge, wherein the nozzle (10) further comprises - a plenum (201; 202) comprising - at least one inlet opening (21 1i ; 21 2i ) connecting the at least one internal inlet coolant channel (16 1i ; 16 2i ) and the plenum (201; 202), and - at least one outlet opening (22 1i ; 22 2i ) connecting the at least one internal outlet channel (17 1i ; 17 2i ) and the plenum (201; 202), wherein - each of the at least one inlet opening (21 1i ; 21 2i ) has a cross-sectional area Ai, and - each of the at least one outlet opening (22 1i ; 22 2i ) has a cross-sectional area A2 I , wherein - wherein i is an integer, n is the number of inlet openings, and m is the number of outlet openings.

The utility model provides a novel operating room plenum chamber, relates to the technical field of laminar flow air supply ceilings, and aims to solve the problems that the positions of a ceiling plenum chamber and a shadowless lamp are inconvenient to adjust according to actual needs, the adjustability of the device needs to be improved, and the ceiling plenum chamber is inconvenient to disassemble, assemble and maintain quickly. The ceiling plenum chamber comprises a ceiling plenum chamber body and a prefabricated steel frame. A group of first adjusting combined arms and a group of second adjusting combined arms are rotatably mounted at the bottom of the ceiling plenum chamber, positioning grooves are formed in the prefabricated steel frame at equal intervals, a group of positioning blocks are slidably mounted at each of the two ends of a guide block, and the positioning blocks at the two ends of the guide block are inserted into the positioning grooves of the prefabricated steel frame; according to the utility model, the positions of the ceiling static pressure box and the shadowless lamp can be conveniently and correspondingly adjusted according to actual requirements, so that the device has better adjustability; and the ceiling plenum chamber is convenient to quickly disassemble, assemble and maintain, and the installation and maintenance efficiency of the device is improved.

A combustor for a gas turbine engine includes a head end section containing a fuel nozzle assembly and a liner extending downstream from the head end section to an aft frame and defining a combustion chamber therein. First injectors, disposed at a first axial location, directs a first fuel / air mixture through the liner. Second injectors, disposed at a second downstream axial location, direct a second fuel / air mixture through the liner. A compressor discharge casing, which at least partially surrounds the combustor, defines a plenum from which a first air supply is directed only to the first injectors, a second air supply is directed only to the second injectors, and a third air supply is directed only to the head end section. The second air supply is greater than each of the first air supply and the third air supply.

The invention relates to a fan coil induction unit all-in-one machine and a control method thereof, belongs to the technical field of air conditioning, and solves the problem that in the prior art, when the quantity of primary air subjected to centralized treatment is reduced or the primary air subjected to centralized treatment is not cooled or heated, the cooling or heating effect of an induction unit is poor. The device comprises a box body, a primary air nozzle, an air return nozzle and an air duct unit, the air duct unit comprises a primary air plenum chamber, an air return plenum chamber and a communicating box, and an inner cavity of the communicating box is divided into a first communicating cavity and a second communicating cavity which are arranged in a staggered mode; the primary air plenum chamber and the primary air nozzles are communicated with the two sides of the first communication cavity respectively, the return air plenum chamber and the return air nozzles are communicated with the two sides of the second communication cavity respectively, and the primary air nozzles and the return air nozzles are arranged in a staggered mode in the length direction of the communication box. The system can normally operate under the condition that the primary air volume is changed or the primary air is closed.

A vortex tube assembly for an aircraft enclosure inerting system has a plenum chamber and a swirl generator which has an inlet passage that allows air in the plenum chamber to enter a vortex chamber whereupon the air can be centrifugally separated into nitrogen enriched air (NEA) and oxygen enriched air (OEA). A throttle pin is positioned within the inlet passage, an outer surface of the throttle pin and an inner surface of the inlet passage co-operatively defining a flow path for air to enter the vortex chamber from the plenum chamber. The throttle pin is movable between a restrictive position and a permissive position, with the flow path being more constricted when the throttle pin is in the restrictive position than when the throttle pin is in the permissive position. The throttle pin is biased to the permissive position and movable to the restrictive position against this bias.

The patient interface is configured to deliver a flow of pressurized breathing gas to the airways of a patient. The patient interface includes a brace base configured to support the nose of a patient in use. Two protrusions extend from the brace base and are configured to be inserted into the nostrils of a patient in use. Each protrusion has an opening formed therein configured to allow air to continuously flow therethrough. Further, an inflatable base forms a plenum chamber with the brace base. The brace base is configured such that motion of the brace base is decoupled from the inflatable base.

The utility model discloses a transformer substation heat abstractor and prefabricated transformer substation for prefabricated transformer substation relates to electrical equipment technical field, above -mentioned transformer substation heat abstractor includes air intake component, air intake and air outlet, air intake component includes the air intake channel of installation in transformer substation, and one end of air intake channel is equipped with the plenum chamber, and the plenum chamber is equipped with at least one opening, and the area of opening is less than the cross -sectional area of air intake channel, and the air intake is located in transformer substation, and is used to make inside transformer substation with outside lead through, and the one end of air intake channel away from plenum chamber is connected with the air intake, and the air intake is equipped with the air intake fan, and the air outlet is located in transformer substation, and is used to make inside transformer substation with outside lead through, satisfy the heat dissipation demand of large capacity transformer, avoid transformer and its component, copper row etc. Temperature is too high, and then influence insulation intensity and life, guarantee power system safe operation.

The utility model discloses an indoor induction type negative oxygen ion air supply device which comprises a plenum chamber (1), an air inlet (3) is formed in the side face of the plenum chamber (1), and a partition plate with double rows of nozzles (4) is arranged at the bottom of the plenum chamber (1). A negative oxygen ion generator (2) is arranged below the static pressure box (1); an internal induction structure is arranged between the static pressure box (1) and the negative oxygen ion generator (2) and comprises a transverse partition plate (5) with punched holes (9) and a vertical partition plate (6) with row holes in the top. According to the indoor induction type negative oxygen ion air supply device, the volume of air supplied into a room is increased by inducing indoor air, and the problems of power consumption and noise of a fan are solved while the fan is omitted.

The present invention relates to a patient interface comprising: a plenum chamber being formed entirely from a flexible material, the plenum chamber including: a cavity, an inlet port, and a groove formed on a surface of the plenum chamber outside the cavity and exposed to ambient pressure, the groove formed radially outside of the inlet port, and the groove forming an enclosed perimeter; a seal-forming structure; a positioning and stabilizing structure comprising: a frame coupled to the plenum chamber, the frame including, a central portion including an inner perimeter and an outer perimeter removably positionable within the groove, the inner perimeter configured to be spaced apart from the inlet port while positioned within the groove, a pair of upper arms, and a pair of lower arms; and headgear straps coupled to the pair of upper arms and the pair of lower arms of the frame.

The present technology is directed to a respiratory pressure therapy system, that includes a plenum chamber pressurisable to a therapeutic pressure above ambient air pressure, a seal-forming structure to form a seal with an entrance to the patient's airways to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use, a positioning and stabilising structure constructed and arranged to provide an elastic force to hold the seal-forming structure in a therapeutically effective position on the patient's head, a blower configured to generate the flow of air and pressurise the plenum chamber to the therapeutic pressure, the blower having a motor, the blower being connected to the plenum chamber such that the blower is suspended from the patient's head and the axis of rotation of the motor is perpendicular to the patient's sagittal plane, and a power supply configured to provide electrical power to the blower.

A vortex tube assembly 42 for an aircraft enclosure inerting system (22, fig. 1) has a plenum chamber 34 and a swirl generator 36 which has an inlet passage 38 that allows air in the plenum chamber to

There are disclosed apparatus including 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.

The application relates to the field of air supply noise reduction equipment, in particular to a sound attenuation static pressure tank for an air supply system which is convenient to install and which comprises a tank body, a connecting head and a connecting block and the like; one connecting head is connected to each of two adjacent vertical surfaces of the tank body; and the bottom of the connecting head is provided with a plurality of connecting blocks which are fixedly connected in a square distribution. The application realizes the connection of the connecting head and the ventilation pipeline by the separated tank body and the connecting head, avoids the situation that the tank body is too close to the wall, the space is insufficient and the connecting head and the ventilation pipeline are inconvenient to connect, realizes the butt joint of the connecting block, the corresponding horizontal sliding groove and the vertical sliding groove, the tank body can only move along the same straight line direction where the connecting head and the communicating opening are located, only needs to be referenced and aligned from one direction, avoids the situation that the butt joint condition is observed from each direction angle, some positions are blocked by the large-volume static pressure tank, the observation is inconvenient, the butt joint difficulty of the static pressure tank and the pipeline is high, the precision is poor, the static pressure tank needs to be moved for many times and the installation efficiency is low.

In a process, an inlet valve is opens from a hot plenum, and injects a working volume with hot fluid, and then closes. The hot fluid expands as a piston moves down. As the piston approaches the BDC, uniflow ports at a bottom uncover, and timed valves at a top open, flooding the fluid with cooled pressurized fluid from a cold plenum, and supercooling the expanded fluid into the working chamber where the fluid was prepared and cooled during a previous cycle. The working fluid is compressed back into the cold plenum, wherein heat is removed, and the timed valves close. The fluid remaining in the working volume is compressed into a remaining upstroke volume before being pressed into the hot plenum. The compressed fluid in the working volume is displaced by the piston motion through a one-way exhaust reed valve to the hot plenum, where it is reheated.

The invention provides a jet drainage exhaust system, which belongs to the technical field of ventilation and comprises an air inlet fan, a first plenum chamber, a reducing jet pipe component, an exhaust hood, a collecting pipe, a second plenum chamber, purification equipment and an exhaust fan. An air outlet of the air inlet fan is communicated with an inlet of the first plenum chamber, one outlet of the first plenum chamber is communicated with an inlet of the reducing spray pipe component, and a drainage assembly is arranged at the other outlet of the first plenum chamber and used for conveying fresh air to an air inlet of the exhaust hood; an outlet of the reducing spray pipe component communicates with an inlet of the collecting pipe and is used for accelerating airflow entering the collecting pipe through the reducing spray pipe component, and the reducing spray pipe component, the collecting pipe, the second static pressure box, the purification equipment and the exhaust fan communicate in sequence. The exhaust fan is used for sucking pollutants and air in the second plenum chamber into the purification equipment and then exhausting the pollutants and the air outdoors through the exhaust fan. The influence of the air exhaust system on the indoor comfort degree and energy waste caused by the air exhaust system are reduced.

A patient interface includes a plenum chamber and at least three plenum chamber inlet ports. A seal-forming structure is arranged to form a seal at least at the entrance of the patient's nares and to maintain a therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle. The interface further includes a positioning and stabilising structure that includes at least four straps, at least three of which define a channel therein, with a conduit provided within each channel. Each conduit includes an interface connector for connecting the conduit to a respective one of the inlet ports and a connection port for connecting to an air circuit in use, with the connection port in fluid communication with each conduit. The plenum chamber is provided with at least one pressure measurement port. A positioning and stabilising structure is also disclosed.

A gas turbine shroud assembly comprises a turbine shroud comprising shroud segments (28) made of ceramic matrix composite, a casing (22) made of a metal alloy and a segmented cooling device (52) comprising a plenum (52B) delimited by an air diffuser (54) having holes for diffusing cooling air jets onto a radially outer side 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 bushing is in the form of a stepped cylinder with a base (60A) and a head (60B) placed on top of the base, the lower face (601) of the base (60A) bearing on the radially outer side surface (30B) of the turbine shroud. The head is intended to receive a spring (58) compressed between the upper face (602) of the base and the upper face (620) of the cavity.